/* roulang page: index */
:root {
    --brand-primary: #1a6cb1;
    --brand-deep: #0e4f88;
    --brand-soft: #dcebf7;
    --accent: #f0714c;
    --accent-deep: #d95936;
    --bg-light: #f6f9fc;
    --bg-blue: #eaf3fb;
    --ink: #172033;
    --ink-2: #475569;
    --ink-3: #8296ab;
    --line: #dbe6ef;
    --white: #ffffff;
    --card-radius: 22px;
    --img-radius: 14px;
    --nav-height: 76px;
    --shadow-card: 0 2px 4px rgba(16, 35, 65, .05), 0 18px 34px rgba(16, 35, 65, .07);
    --shadow-hover: 0 6px 14px rgba(16, 35, 65, .08), 0 28px 52px rgba(16, 35, 65, .12);
    --container: 1280px;
    --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", "Inter", sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font);
    color: var(--ink);
    background: var(--bg-light);
    line-height: 1.75;
    overflow-x: hidden;
}

body.no-scroll {
    overflow: hidden;
}

a {
    color: var(--brand-primary);
    text-decoration: none;
    transition: color .24s ease;
}

a:hover {
    color: var(--brand-deep);
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

button,
input {
    font-family: inherit;
}

section[id],
div[id] {
    scroll-margin-top: calc(var(--nav-height) + 20px);
}

.grid-container {
    max-width: var(--container);
}

::selection {
    background: rgba(26, 108, 177, .22);
}

:focus-visible {
    outline: 3px solid rgba(26, 108, 177, .45);
    outline-offset: 3px;
    border-radius: 6px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 52px;
    padding: 0 28px;
    border-radius: 999px;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: .02em;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all .24s ease;
    white-space: nowrap;
    line-height: 1.2;
    text-align: center;
}

.btn i {
    font-size: 15px;
}

.btn:active {
    transform: scale(.98);
}

.btn-primary {
    background: var(--brand-primary);
    color: var(--white);
    box-shadow: 0 10px 24px rgba(26, 108, 177, .22);
}

.btn-primary:hover {
    background: var(--brand-deep);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(26, 108, 177, .26);
}

.btn-accent {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 10px 22px rgba(240, 113, 76, .24);
}

.btn-accent:hover {
    background: var(--accent-deep);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(240, 113, 76, .28);
}

.btn-outline {
    background: transparent;
    color: var(--brand-deep);
    border: 1px solid rgba(26, 108, 177, .35);
    box-shadow: 0 2px 8px rgba(16, 35, 65, .04);
}

.btn-outline:hover {
    color: var(--brand-deep);
    border-color: var(--brand-primary);
    background: rgba(255, 255, 255, .7);
    transform: translateY(-2px);
}

.btn-ghost {
    background: rgba(255, 255, 255, .12);
    color: #fff;
    border-color: rgba(255, 255, 255, .42);
    backdrop-filter: blur(6px);
}

.btn-ghost:hover {
    color: #fff;
    background: rgba(255, 255, 255, .2);
    border-color: rgba(255, 255, 255, .78);
    transform: translateY(-2px);
}

.btn-small {
    min-height: 44px;
    padding: 0 22px;
    font-size: 15px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 28px;
    padding: 0 12px;
    border-radius: 999px;
    background: var(--brand-soft);
    color: var(--brand-deep);
    font-size: 12.5px;
    font-weight: 700;
    line-height: 1;
    white-space: nowrap;
}

.badge-accent {
    background: rgba(240, 113, 76, .12);
    color: var(--accent-deep);
}

.badge-white {
    background: rgba(255, 255, 255, .92);
    color: var(--brand-deep);
    box-shadow: 0 2px 8px rgba(16, 35, 65, .08);
}

.kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 800;
    color: var(--brand-primary);
    letter-spacing: .1em;
    margin-bottom: 18px;
    text-transform: uppercase;
}

.kicker::before {
    content: "";
    display: inline-block;
    width: 24px;
    height: 3px;
    border-radius: 99px;
    background: var(--accent);
}

.section {
    position: relative;
    padding: 96px 0;
}

.section-alt {
    background: var(--white);
}

.section-blue {
    background: var(--bg-blue);
}

.caption {
    color: var(--ink-3);
    font-size: 15px;
    letter-spacing: .05em;
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 100;
    background: rgba(255, 255, 255, .56);
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, .62);
    transition: background .32s ease, box-shadow .32s ease, border-color .32s ease;
}

.site-header.is-scrolled {
    background: rgba(255, 255, 255, .92);
    border-bottom-color: rgba(15, 50, 90, .08);
    box-shadow: 0 10px 30px rgba(16, 35, 65, .07);
}

.header-bar {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 clamp(18px, 3.5vw, 44px);
    height: var(--nav-height);
    display: flex;
    align-items: center;
    gap: 24px;
}

.brand-lockup {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    min-width: 0;
}

.brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    background: linear-gradient(135deg, #1d7bc7, #0e4f88);
    box-shadow: 0 6px 14px rgba(26, 108, 177, .22);
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.brand-mark i {
    font-size: 19px;
}

.brand-name {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
    color: var(--ink);
}

.brand-name strong {
    font-size: 18px;
    font-weight: 900;
    letter-spacing: .01em;
}

.brand-name small {
    margin-top: 2px;
    font-size: 11px;
    color: var(--ink-3);
    font-weight: 500;
    letter-spacing: .08em;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: 10px;
    flex: 1;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    min-height: 42px;
    padding: 0 17px;
    border-radius: 999px;
    color: var(--ink-2);
    font-size: 15.5px;
    font-weight: 600;
    position: relative;
    transition: background .24s ease, color .24s ease;
}

.nav-link:hover {
    background: rgba(26, 108, 177, .08);
    color: var(--brand-deep);
}

.nav-link.active {
    color: var(--brand-deep);
    background: rgba(26, 108, 177, .1);
}

.nav-link.active::after {
    content: "";
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
    margin-left: 7px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.icon-btn {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 0;
    background: rgba(255, 255, 255, .6);
    color: var(--brand-deep);
    font-size: 17px;
    cursor: pointer;
    transition: all .24s ease;
}

.icon-btn:hover {
    background: #fff;
    color: var(--brand-primary);
    box-shadow: 0 4px 12px rgba(16, 35, 65, .1);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 46px;
    height: 46px;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, .68);
    cursor: pointer;
    padding: 0;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--brand-deep);
    border-radius: 4px;
    transition: all .26s ease;
}

.nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.header-search-panel {
    position: absolute;
    top: calc(var(--nav-height) + 10px);
    right: max(18px, calc((100vw - var(--container)) / 2 + 18px));
    width: min(420px, calc(100vw - 36px));
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 18px 44px rgba(16, 35, 65, .16);
    border: 1px solid rgba(255, 255, 255, .8);
    padding: 14px;
    opacity: 0;
    transform: translateY(-12px);
    pointer-events: none;
    transition: opacity .26s ease, transform .26s ease;
}

.header-search-panel.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.search-form {
    display: flex;
    gap: 10px;
}

.search-form input[type="text"] {
    flex: 1;
    height: 46px;
    border: 1px solid var(--line);
    background: #f7fafc;
    border-radius: 13px;
    padding: 0 16px;
    font-size: 15px;
    transition: border-color .2s, box-shadow .2s;
}

.search-form input[type="text"]:focus {
    outline: none;
    border-color: var(--brand-primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(26, 108, 177, .14);
}

.search-form button {
    width: 48px;
    border: 0;
    border-radius: 13px;
    background: var(--brand-primary);
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    transition: background .2s;
}

.search-form button:hover {
    background: var(--brand-deep);
}

/* Hero */
.hero {
    position: relative;
    min-height: 92vh;
    max-height: 860px;
    display: flex;
    align-items: center;
    background:
        radial-gradient(circle at 78% 30%, rgba(124, 192, 239, .28), transparent 24%),
        linear-gradient(112deg, rgba(243, 249, 253, .98) 0%, rgba(238, 247, 253, .86) 38%, rgba(220, 236, 249, .64) 70%, rgba(216, 234, 250, .36) 100%),
        url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(246, 250, 253, .12), rgba(255, 255, 255, 0));
    pointer-events: none;
}

.hero .grid-container {
    position: relative;
    z-index: 2;
}

.hero-copy {
    padding-right: clamp(12px, 3vw, 44px);
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, .62);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, .85);
    box-shadow: 0 6px 20px rgba(16, 35, 65, .05);
    color: var(--brand-deep);
    font-weight: 700;
    font-size: 14px;
    padding: 10px 18px;
    border-radius: 999px;
    margin-bottom: 30px;
}

.hero-eyebrow i {
    color: var(--accent);
}

.hero h1 {
    font-size: clamp(34px, 5vw, 54px);
    font-weight: 900;
    line-height: 1.25;
    letter-spacing: -0.01em;
    max-width: 720px;
    color: var(--ink);
    margin-bottom: 22px;
}

.hero h1 span {
    color: var(--brand-primary);
}

.hero-lead {
    font-size: clamp(16px, 1.5vw, 19px);
    line-height: 1.9;
    color: var(--ink-2);
    max-width: 660px;
    margin-bottom: 36px;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    margin-top: 12px;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    padding: 4px 28px 4px 0;
    margin-right: 28px;
    border-right: 1px solid rgba(16, 35, 65, .08);
}

.hero-stat:last-child {
    border-right: 0;
}

.hero-stat strong {
    font-size: 22px;
    font-weight: 900;
    color: var(--ink);
}

.hero-stat span {
    font-size: 13px;
    color: var(--ink-3);
    margin-top: 2px;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.phone-wrap {
    position: relative;
    width: 280px;
    padding: 12px;
    transform: perspective(900px) rotateY(-8deg) rotateX(2deg);
    transition: transform .5s ease;
}

.phone-wrap:hover {
    transform: perspective(900px) rotateY(-2deg) rotateX(0);
}

.phone-frame {
    background: #fff;
    border-radius: 34px;
    box-shadow: 0 28px 60px rgba(16, 35, 65, .18), 0 2px 6px rgba(16, 35, 65, .08);
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, .7);
    position: relative;
}

.phone-screen {
    border-radius: 26px;
    background: #161c2f;
    overflow: hidden;
    position: relative;
    aspect-ratio: 9 / 18.6;
}

.phone-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: .85;
}

.phone-topbar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 14px 28px;
    background: linear-gradient(180deg, rgba(0, 0, 0, .6), transparent);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    z-index: 2;
}

.phone-topbar i {
    font-size: 16px;
}

.phone-caption {
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 58px;
    z-index: 2;
    color: #fff;
    line-height: 1.45;
}

.phone-caption strong {
    display: block;
    font-size: 15px;
    font-weight: 800;
    text-shadow: 0 2px 8px rgba(0, 0, 0, .4);
}

.phone-caption span {
    font-size: 12px;
    opacity: .9;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.phone-playbar {
    position: absolute;
    bottom: 14px;
    left: 14px;
    right: 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, .22);
    border-radius: 999px;
    padding: 5px 8px 5px 14px;
    backdrop-filter: blur(8px);
    color: #fff;
    font-size: 12px;
    z-index: 2;
}

.phone-playbar i {
    width: 26px;
    height: 26px;
    display: inline-flex;
    border-radius: 50%;
    background: #fff;
    color: #0e4f88;
    align-items: center;
    justify-content: center;
    font-size: 11px;
}

@media (max-width: 1023px) {
    .hero {
        min-height: auto;
        padding: calc(var(--nav-height) + 40px) 0 60px;
    }

    .hero-visual {
        display: none;
    }

    .hero h1 {
        font-size: 36px;
    }
}

/* trust strip */
.trust-strip {
    background: #fff;
    border-bottom: 1px solid var(--line);
}

.trust-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 24px;
    padding: 24px 0;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 14px;
    flex: 1;
    min-width: 210px;
}

.trust-item .trust-ico {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: var(--bg-blue);
    color: var(--brand-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 19px;
    flex-shrink: 0;
}

.trust-item strong {
    display: block;
    font-size: 15px;
    font-weight: 800;
}

.trust-item span {
    display: block;
    font-size: 13px;
    color: var(--ink-3);
    margin-top: 2px;
}

/* section header */
.sec-header {
    margin-bottom: 46px;
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 30px;
}

.sec-header h2 {
    font-size: clamp(28px, 3.6vw, 38px);
    font-weight: 900;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--ink);
}

.sec-header h2 small {
    display: block;
    font-size: 17px;
    font-weight: 500;
    color: var(--ink-3);
    margin-top: 12px;
    letter-spacing: 0;
}

.sec-header-right {
    flex-shrink: 0;
}

.sec-header-right .link-arrow {
    font-weight: 700;
    font-size: 15px;
    display: inline-flex;
    gap: 8px;
    align-items: center;
    color: var(--brand-deep);
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14.5px;
    font-weight: 700;
    color: var(--brand-primary);
    transition: gap .2s ease, color .2s ease;
}

.link-arrow:hover {
    gap: 11px;
    color: var(--brand-deep);
}

/* trend cards */
.trend-card {
    background: var(--white);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-card);
    display: block;
    overflow: hidden;
    transition: all .28s ease;
    height: 100%;
    border: 1px solid rgba(255, 255, 255, .7);
}

.trend-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.trend-media {
    position: relative;
    aspect-ratio: 3 / 3.8;
    overflow: hidden;
}

.trend-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}

.trend-card:hover .trend-media img {
    transform: scale(1.03);
}

.trend-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(16, 22, 33, .03), transparent 40%, rgba(16, 22, 33, .4));
}

.trend-rank {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 2;
    min-width: 44px;
    height: 30px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(8px);
    color: var(--brand-deep);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12.5px;
    font-weight: 800;
    padding: 0 12px;
    box-shadow: 0 4px 12px rgba(16, 35, 65, .1);
}

.trend-rank i {
    color: var(--accent);
    margin-right: 5px;
}

.trend-play {
    position: absolute;
    right: 16px;
    bottom: 16px;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .86);
    backdrop-filter: blur(8px);
    color: var(--brand-deep);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    box-shadow: 0 4px 14px rgba(16, 35, 65, .18);
    transition: all .3s ease;
}

.trend-card:hover .trend-play {
    background: var(--accent);
    color: #fff;
    transform: scale(1.05);
}

.trend-body {
    padding: 22px 24px 26px;
}

.trend-body .tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 13px;
}

.trend-body h3 {
    font-size: 19px;
    font-weight: 800;
    color: var(--ink);
    line-height: 1.5;
    margin-bottom: 12px;
}

.trend-body p {
    color: var(--ink-3);
    font-size: 14px;
    line-height: 1.7;
}

.trend-body .more-row {
    margin-top: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: var(--brand-deep);
    font-weight: 700;
}

/* pick cards */
.pick-card {
    background: var(--white);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: stretch;
    width: 100%;
    overflow: hidden;
    transition: transform .28s ease, box-shadow .28s ease;
    height: 100%;
}

.pick-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.pick-cover {
    width: 46%;
    min-height: 230px;
    position: relative;
    overflow: hidden;
}

.pick-cover img {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}

.pick-card:hover .pick-cover img {
    transform: scale(1.03);
}

.pick-cover .pick-num {
    position: absolute;
    left: 14px;
    top: 14px;
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: var(--accent);
    color: #fff;
    font-size: 13px;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(240, 113, 76, .36);
}

.pick-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 26px 26px 22px;
}

.pick-body .tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.pick-body h3 {
    font-size: 19px;
    font-weight: 800;
    color: var(--ink);
    margin-bottom: 10px;
    line-height: 1.5;
}

.pick-body p {
    color: var(--ink-2);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 16px;
}

.pick-foot {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.pick-meta {
    font-size: 13px;
    color: var(--ink-3);
}

/* review strip */
.review-section {
    background: var(--bg-blue);
}

.review-wrap {
    display: grid;
    grid-template-columns: minmax(220px, 30%) 1fr;
    gap: 34px;
    align-items: center;
}

.review-aside {
    padding-right: 10px;
}

.review-aside h2 {
    font-size: 32px;
    line-height: 1.35;
    font-weight: 900;
    margin: 14px 0 20px;
}

.review-track {
    display: flex;
    gap: 18px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding: 6px 6px 24px 6px;
    -webkit-overflow-scrolling: touch;
}

.review-track::-webkit-scrollbar {
    height: 4px;
}

.review-track::-webkit-scrollbar-track {
    background: rgba(26, 108, 177, .08);
    border-radius: 8px;
}

.review-track::-webkit-scrollbar-thumb {
    background: rgba(26, 108, 177, .25);
    border-radius: 8px;
}

.review-card {
    flex: 0 0 300px;
    background: var(--white);
    border-radius: 20px;
    padding: 22px;
    box-shadow: var(--shadow-card);
    scroll-snap-align: start;
    border: 1px solid rgba(255, 255, 255, .7);
}

.review-card .review-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.review-head .avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #e1eef9, #bfdbf2);
    color: var(--brand-deep);
    font-weight: 800;
    flex-shrink: 0;
}

.review-head .reviewer strong {
    display: block;
    font-size: 14px;
    font-weight: 800;
}

.review-head .reviewer span {
    font-size: 12px;
    color: var(--ink-3);
}

.review-stars {
    color: #f5a623;
    font-size: 12px;
    margin-bottom: 10px;
    display: flex;
    gap: 2px;
}

.review-card p {
    font-size: 14px;
    line-height: 1.75;
    color: var(--ink-2);
}

.feedback-foot {
    display: flex;
    margin-top: 15px;
    gap: 14px;
    font-size: 12px;
    color: var(--ink-3);
}

.feedback-foot i {
    margin-right: 4px;
}

@media (max-width: 1024px) {
    .review-wrap {
        grid-template-columns: 1fr;
        gap: 10px;
    }
}

/* dark CTA */
.cta-band {
    position: relative;
    background: linear-gradient(120deg, #113a5f, #155b95);
    padding: 80px 0;
    color: #fff;
    overflow: hidden;
}

.cta-band::after {
    content: "";
    position: absolute;
    right: -80px;
    bottom: -90px;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, .18), transparent 60%);
}

.cta-band .grid-x {
    position: relative;
    z-index: 2;
}

.cta-body h2 {
    font-size: clamp(28px, 4vw, 38px);
    font-weight: 900;
    color: #fff;
    line-height: 1.35;
    margin-bottom: 12px;
}

.cta-body p {
    color: rgba(255, 255, 255, .84);
    font-size: 16px;
    line-height: 1.8;
    max-width: 640px;
}

.cta-actions {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    gap: 12px;
}

.cta-actions .btn {
    width: 100%;
}

.cta-actions small {
    color: rgba(255, 255, 255, .72);
    font-size: 12px;
    text-align: center;
}

/* CMS news */
.news-card {
    background: var(--white);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    display: flex;
    gap: 0;
    transition: transform .28s ease, box-shadow .28s ease;
    height: 100%;
}

.news-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.news-card .news-cover {
    flex: 0 0 46%;
    max-width: 46%;
    position: relative;
    min-height: 240px;
}

.news-card .news-cover img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-card .news-main {
    padding: 26px 24px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.news-main .meta-line {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 13px;
    color: var(--ink-3);
    margin-bottom: 17px;
}

.news-main h3 {
    font-size: 20px;
    font-weight: 800;
    color: var(--ink);
    line-height: 1.5;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-main .excerpt {
    color: var(--ink-2);
    font-size: 14.5px;
    line-height: 1.75;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-row-wrap {
    display: flex;
    flex-direction: column;
    gap: 18px;
    height: 100%;
}

.news-row {
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    padding: 20px;
    display: flex;
    gap: 18px;
    align-items: center;
    transition: transform .24s ease, box-shadow .24s ease;
}

.news-row:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-hover);
}

.news-row .row-thumb {
    flex: 0 0 112px;
    width: 112px;
    aspect-ratio: 4 / 3;
    border-radius: 13px;
    overflow: hidden;
    position: relative;
}

.news-row .row-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-row .row-body {
    min-width: 0;
    flex: 1;
}

.row-body .meta-line {
    display: flex;
    gap: 10px;
    font-size: 12px;
    color: var(--ink-3);
    margin-bottom: 10px;
    align-items: center;
}

.row-body h3 {
    font-size: 16px;
    font-weight: 800;
    line-height: 1.5;
    color: var(--ink);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 0;
}

.row-body .excerpt {
    color: var(--ink-3);
    font-size: 13px;
    line-height: 1.6;
    margin-top: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cms-empty {
    border: 1px dashed #c6d7e8;
    background: rgba(239, 247, 253, .55);
    border-radius: 24px;
    padding: 72px 30px;
    display: flex;
    align-items: center;
    flex-direction: column;
    text-align: center;
    gap: 20px;
}

.cms-empty img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 28px;
}

.cms-empty p {
    color: var(--ink-3);
    font-size: 16px;
    font-weight: 600;
}

/* FAQ */
.faq-wrap {
    display: grid;
    grid-template-columns: minmax(250px, 32%) 1fr;
    gap: 64px;
    align-items: start;
}

.faq-aside h2 {
    font-size: 34px;
    font-weight: 900;
    line-height: 1.35;
    color: var(--ink);
    margin-bottom: 18px;
}

.faq-aside p {
    color: var(--ink-3);
    line-height: 1.8;
}

.faq-list details {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    margin-bottom: 14px;
    transition: border-color .25s ease, background .25s ease, box-shadow .25s ease;
}

.faq-list details[open] {
    background: #fff;
    border-color: rgba(26, 108, 177, .36);
    box-shadow: 0 10px 24px rgba(16, 35, 65, .06);
}

.faq-list summary {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 14px;
    justify-content: space-between;
    min-height: 72px;
    padding: 20px 22px 20px 24px;
    cursor: pointer;
    color: var(--ink);
    font-size: 16px;
    font-weight: 800;
    transition: color .2s;
    user-select: none;
}

.faq-list summary::-webkit-details-marker {
    display: none;
}

.faq-list summary:hover {
    color: var(--brand-deep);
}

.faq-list summary .faq-icon {
    flex: 0 0 32px;
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-blue);
    color: var(--brand-primary);
    font-size: 14px;
    transition: all .24s ease;
}

.faq-list details[open] summary .faq-icon {
    background: var(--brand-primary);
    color: #fff;
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 24px 22px 24px;
    color: var(--ink-2);
    font-size: 15px;
    line-height: 1.9;
    border-top: 1px solid rgba(26, 108, 177, .07);
    margin: 0 0 0 24px;
    padding-left: 0;
}

/* footer */
.site-footer {
    background: #e9f1f8;
    border-top: 1px solid rgba(16, 35, 65, .06);
    margin-top: 0;
}

.footer-top {
    padding: 64px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr .9fr;
    gap: 44px;
}

.footer-des p {
    color: var(--ink-3);
    line-height: 1.8;
    font-size: 14px;
    max-width: 360px;
    margin-top: 16px;
}

.footer-head {
    font-size: 15px;
    font-weight: 800;
    color: var(--ink);
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-head::after {
    content: "";
    width: 18px;
    height: 2px;
    border-radius: 4px;
    background: var(--accent);
    display: inline-block;
    margin-left: 4px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 0;
}

.footer-links li a {
    display: inline-block;
    padding: 8px 0;
    color: var(--ink-2);
    font-size: 14px;
    font-weight: 500;
    transition: all .2s ease;
}

.footer-links li a:hover {
    color: var(--brand-deep);
    padding-left: 4px;
}

.footer-contact {
    margin-top: 20px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.footer-contact .badge {
    background: rgba(255, 255, 255, .6);
    color: var(--ink-2);
}

.footer-bottom {
    border-top: 1px solid rgba(16, 35, 65, .08);
    padding: 24px 0;
    color: var(--ink-3);
    font-size: 13px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
}

@media (max-width: 1024px) {
    .section {
        padding: 72px 0;
    }

    .main-nav {
        position: fixed;
        top: var(--nav-height);
        left: 16px;
        right: 16px;
        background: rgba(255, 255, 255, .97);
        border-radius: 22px;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 20px;
        margin: 0;
        box-shadow: 0 24px 58px rgba(16, 35, 65, .16);
        opacity: 0;
        transform: translateY(-10px);
        pointer-events: none;
        transition: opacity .25s ease, transform .25s ease;
    }

    .main-nav.open {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .nav-link {
        padding: 12px 16px;
        border-radius: 14px;
        font-size: 16px;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .header-bar {
        gap: 14px;
    }

    .header-btn {
        display: none;
    }

    .header-search-panel {
        right: 16px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 64px 0;
    }

    .sec-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 18px;
    }

    .trust-grid {
        flex-direction: row;
        gap: 16px;
    }

    .trust-item {
        min-width: 140px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero-lead {
        font-size: 16px;
    }

    .hero-actions .btn {
        min-width: 0;
        flex: 1;
    }

    .pick-card {
        flex-direction: column;
    }

    .pick-cover {
        width: 100%;
        min-height: 200px;
        flex: 0 0 200px;
    }

    .pick-cover img {
        position: absolute;
        inset: 0;
    }

    .faq-wrap {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .cta-actions {
        margin-top: 26px;
    }

    .news-card {
        flex-direction: column;
    }

    .news-card .news-cover {
        width: 100%;
        max-width: 100%;
        min-height: 200px;
        flex: 0 0 200px;
    }

    .news-card .news-cover img {
        position: absolute;
    }
}

@media (max-width: 600px) {
    .brand-name small {
        display: none;
    }

    .brand-mark {
        width: 36px;
        height: 36px;
    }

    .brand-name strong {
        font-size: 16px;
    }

    .icon-btn {
        display: none;
    }

    .header-actions {
        margin-left: auto;
        gap: 8px;
    }

    .hero-stat {
        padding-right: 16px;
        margin-right: 16px;
    }

    .hero-stat strong {
        font-size: 18px;
    }

    .trust-grid {
        flex-direction: column;
        gap: 10px;
    }

    .trend-body,
    .pick-body {
        padding: 20px 18px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* roulang page: category1 */
:root {
            --brand-primary: #1f6fb5;
            --brand-primary-dark: #0f4c7f;
            --brand-soft: #e3eef9;
            --accent: #ff6b4a;
            --accent-dark: #e04e2f;
            --bg-light: #f6f9fc;
            --bg-ice: #eaf3fb;
            --bg-deep: #142a3f;
            --ink: #172033;
            --text-sub: #475569;
            --text-weak: #8296ab;
            --white: #ffffff;
            --line: #dce8f2;
            --card-radius: 22px;
            --btn-radius: 999px;
            --shadow-card: 0 2px 4px rgba(16, 35, 65, .06), 0 16px 30px rgba(16, 35, 65, .07);
            --shadow-card-hover: 0 6px 16px rgba(16, 35, 65, .08), 0 24px 44px rgba(16, 35, 65, .10);
            --nav-height: 76px;
            --section-space: 96px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", -apple-system, "Segoe UI", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            background: var(--bg-light);
            color: var(--ink);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
            height: auto;
        }

        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: color .2s ease;
        }

        a:hover {
            color: var(--brand-primary-dark);
        }

        button,
        input {
            font-family: inherit;
        }

        section[id],
        div[id] {
            scroll-margin-top: calc(var(--nav-height) + 20px);
        }

        .grid-container {
            max-width: 1320px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: .04em;
            color: var(--brand-primary);
            background: rgba(31, 111, 181, .1);
            padding: 8px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .eyebrow i {
            font-size: 14px;
        }

        .section-pad {
            padding: 96px 0;
        }

        .section-head {
            max-width: 760px;
            margin-bottom: 48px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-head h2 {
            font-size: 34px;
            line-height: 1.3;
            font-weight: 800;
            margin: 0 0 12px;
            color: var(--ink);
            letter-spacing: -.01em;
        }

        .section-head p {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-sub);
            margin: 0;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: var(--nav-height);
            background: rgba(255, 255, 255, .55);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-bottom: 1px solid rgba(255, 255, 255, .7);
            transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
        }

        .site-header.is-scrolled {
            background: rgba(255, 255, 255, .92);
            border-bottom: 1px solid rgba(15, 50, 90, .08);
            box-shadow: 0 10px 30px rgba(16, 35, 65, .06);
        }

        .header-bar {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 32px;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .brand-lockup {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--ink);
            flex-shrink: 0;
        }

        .brand-lockup:hover {
            color: var(--ink);
        }

        .brand-mark {
            width: 42px;
            height: 42px;
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #1f6fb5, #2fa0d6);
            color: #fff;
            font-size: 20px;
            box-shadow: 0 8px 18px rgba(31, 111, 181, .18);
        }

        .brand-name {
            display: flex;
            flex-direction: column;
            line-height: 1.15;
        }

        .brand-name strong {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: .01em;
            color: var(--ink);
        }

        .brand-name small {
            font-size: 11px;
            color: var(--text-weak);
            letter-spacing: .04em;
            margin-top: 3px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 42px;
            padding: 0 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            border-radius: 999px;
            transition: background .2s ease, color .2s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--brand-primary);
            background: rgba(31, 111, 181, .08);
        }

        .nav-link.active {
            background: rgba(31, 111, 181, .12);
            color: var(--brand-primary);
            font-weight: 700;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .icon-btn {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--line);
            background: rgba(255, 255, 255, .8);
            color: var(--ink);
            font-size: 15px;
            cursor: pointer;
            transition: border-color .2s, background .2s, color .2s;
        }

        .icon-btn:hover {
            background: var(--white);
            color: var(--brand-primary);
            border-color: rgba(31, 111, 181, .4);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: 0;
            background: transparent;
            cursor: pointer;
            padding: 10px;
        }

        .nav-toggle span {
            display: block;
            height: 2px;
            background: var(--ink);
            border-radius: 4px;
            margin: 5px 0;
            transition: transform .25s ease, opacity .2s ease;
        }

        .header-search-panel {
            position: absolute;
            left: 0;
            right: 0;
            top: var(--nav-height);
            padding: 0 32px;
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
            background: transparent;
        }

        .header-search-panel.open {
            max-height: 86px;
        }

        .header-search-panel .search-form {
            max-width: 1320px;
            margin: 0 auto 16px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: 6px 8px 6px 20px;
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-card);
        }

        .header-search-panel .search-form input {
            flex: 1;
            border: 0;
            outline: none;
            font-size: 15px;
            background: transparent;
            height: 40px;
            color: var(--ink);
        }

        .header-search-panel .search-form button {
            width: 44px;
            height: 40px;
            border: 0;
            border-radius: 999px;
            background: var(--brand-primary);
            color: #fff;
            font-size: 15px;
            cursor: pointer;
            transition: background .2s ease;
        }

        .header-search-panel .search-form button:hover {
            background: var(--brand-primary-dark);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 52px;
            padding: 0 28px;
            border-radius: var(--btn-radius);
            font-size: 16px;
            font-weight: 700;
            border: 0;
            cursor: pointer;
            transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
            white-space: nowrap;
        }

        .btn:active {
            transform: scale(.98);
        }

        .btn-primary {
            background: var(--brand-primary);
            color: #fff;
            box-shadow: 0 10px 24px rgba(31, 111, 181, .22);
        }

        .btn-primary:hover {
            background: var(--brand-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 14px 28px rgba(31, 111, 181, .28);
        }

        .btn-outline {
            background: transparent;
            border: 1.5px solid rgba(31, 111, 181, .4);
            color: var(--brand-primary);
        }

        .btn-outline:hover {
            border-color: var(--brand-primary);
            color: var(--brand-primary-dark);
            background: rgba(31, 111, 181, .05);
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 10px 24px rgba(255, 107, 74, .25);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-small {
            height: 42px;
            padding: 0 20px;
            font-size: 14px;
        }

        .btn-block-mobile {
            width: auto;
        }

        /* ===== Category Hero ===== */
        .cat-hero {
            position: relative;
            padding: calc(var(--nav-height) + 64px) 0 72px;
            background: linear-gradient(135deg, rgba(234, 243, 251, .88) 0%, rgba(255, 255, 255, .9) 60%), url("/assets/images/backpic/back-3.webp") right center / cover no-repeat #f0f6fc;
            overflow: hidden;
        }

        .cat-hero::after {
            content: "";
            position: absolute;
            width: 520px;
            height: 520px;
            border-radius: 50%;
            right: -160px;
            bottom: -200px;
            background: rgba(31, 111, 181, .08);
            pointer-events: none;
        }

        .cat-hero .grid-container {
            position: relative;
            z-index: 2;
        }

        .cat-hero-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
        }

        .cat-hero-copy {
            flex: 1 1 58%;
            max-width: 760px;
        }

        .cat-hero-copy h1 {
            font-size: 52px;
            line-height: 1.2;
            font-weight: 900;
            margin: 0 0 16px;
            letter-spacing: -.02em;
            color: var(--ink);
        }

        .cat-hero-copy p.lead {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-sub);
            margin: 0 0 30px;
            max-width: 640px;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .hero-note {
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 18px;
            display: flex;
            align-items: center;
            gap: 7px;
        }

        .hero-note i {
            color: var(--brand-primary);
        }

        .cat-hero-visual {
            flex: 0 1 420px;
        }

        .hero-watch-card {
            background: rgba(255, 255, 255, .82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, .8);
            border-radius: 26px;
            box-shadow: 0 20px 50px rgba(16, 35, 65, .1);
            padding: 24px;
        }

        .watch-card-head {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 16px;
        }

        .watch-card-head i {
            color: var(--accent);
        }

        .watch-card-head small {
            margin-left: auto;
            background: var(--brand-soft);
            color: var(--brand-primary-dark);
            padding: 4px 12px;
            border-radius: 99px;
            font-size: 12px;
            font-weight: 700;
            white-space: nowrap;
        }

        .watch-chip {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 14px 16px;
            margin-bottom: 10px;
            transition: border-color .2s, box-shadow .2s;
        }

        .watch-chip:hover {
            border-color: rgba(31, 111, 181, .3);
            box-shadow: 0 6px 18px rgba(16, 35, 65, .05);
        }

        .watch-chip-title {
            font-weight: 700;
            font-size: 15px;
            color: var(--ink);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 4px;
        }

        .watch-chip-title i {
            color: var(--brand-primary);
            font-size: 13px;
        }

        .watch-chip-title em {
            font-style: normal;
            font-size: 11px;
            background: var(--accent);
            color: #fff;
            padding: 2px 8px;
            border-radius: 99px;
            margin-left: auto;
        }

        .watch-chip p {
            margin: 0;
            font-size: 13.5px;
            line-height: 1.6;
            color: var(--text-sub);
        }

        /* ===== Quick Anchor Nav ===== */
        .anchor-river {
            background: #fff;
            border-bottom: 1px solid var(--line);
            padding: 18px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .anchor-river .grid-container {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: nowrap;
        }

        .anchor-river .anchor-tag {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            border-radius: 999px;
            font-weight: 600;
            color: var(--text-sub);
            border: 1px solid var(--line);
            background: #f8fafc;
            transition: all .2s ease;
        }

        .anchor-river .anchor-tag i {
            color: var(--brand-primary);
        }

        .anchor-river .anchor-tag:hover {
            background: var(--brand-soft);
            color: var(--brand-primary-dark);
            border-color: rgba(31, 111, 181, .3);
        }

        /* ===== Highlight Band ===== */
        .highlight-band {
            background: var(--bg-ice);
            padding: 22px 0;
        }

        .highlight-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px;
        }

        .highlight-icon {
            flex-shrink: 0;
            width: 46px;
            height: 46px;
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            background: #fff;
            color: var(--brand-primary);
            box-shadow: 0 6px 14px rgba(16, 35, 65, .04);
        }

        .highlight-item strong {
            display: block;
            font-size: 16px;
            font-weight: 800;
            color: var(--ink);
            line-height: 1.3;
        }

        .highlight-item span {
            font-size: 13px;
            color: var(--text-sub);
        }

        /* ===== Feature Cards ===== */
        .feature-section {
            background: var(--bg-light);
        }

        .feature-card {
            background: #fff;
            border-radius: var(--card-radius);
            box-shadow: var(--shadow-card);
            padding: 30px 26px;
            height: 100%;
            border: 1px solid rgba(220, 232, 242, .5);
            transition: transform .25s ease, box-shadow .25s ease;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 18px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            background: var(--brand-soft);
            color: var(--brand-primary);
            margin-bottom: 22px;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 800;
            line-height: 1.35;
            margin: 0 0 10px;
            color: var(--ink);
        }

        .feature-card p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-sub);
            margin: 0;
        }

        /* ===== Flow Section ===== */
        .flow-section {
            background: #fff;
        }

        .step-item {
            background: var(--bg-light);
            border-radius: 20px;
            padding: 24px;
            height: 100%;
            border: 1px solid var(--line);
            position: relative;
        }

        .step-num {
            width: 36px;
            height: 36px;
            border-radius: 12px;
            background: var(--brand-primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 15px;
            margin-bottom: 16px;
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 800;
            margin: 0 0 10px;
        }

        .step-item p {
            font-size: 14.5px;
            line-height: 1.75;
            color: var(--text-sub);
            margin: 0;
        }

        .step-arrow {
            color: var(--line);
            font-size: 14px;
            margin-top: 12px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== Scene Section ===== */
        .scene-section {
            background: linear-gradient(180deg, #fff 0%, var(--bg-light) 100%);
        }

        .scene-card {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            height: 360px;
            color: #fff;
            box-shadow: var(--shadow-card);
        }

        .scene-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .scene-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 26, 46, .06) 0%, rgba(10, 26, 46, .65) 70%, rgba(10, 26, 46, .82) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 26px;
            transition: background .3s;
        }

        .scene-card:hover .scene-overlay {
            background: linear-gradient(180deg, rgba(10, 26, 46, .02) 0%, rgba(10, 26, 46, .58) 75%, rgba(10, 26, 46, .78) 100%);
        }

        .scene-overlay .tagline {
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 8px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .scene-overlay h3 {
            font-size: 22px;
            font-weight: 800;
            margin: 0 0 8px;
        }

        .scene-overlay p {
            font-size: 15px;
            line-height: 1.75;
            margin: 0;
            opacity: .9;
        }

        /* ===== Wide Topic Cards ===== */
        .topic-section {
            background: var(--bg-light);
        }

        .topic-card {
            background: #fff;
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid rgba(220, 232, 242, .5);
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .topic-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .topic-thumb {
            height: 230px;
            overflow: hidden;
            position: relative;
        }

        .topic-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .55s ease;
        }

        .topic-card:hover .topic-thumb img {
            transform: scale(1.04);
        }

        .topic-thumb .topic-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(6px);
            color: var(--brand-primary);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 999px;
        }

        .topic-body {
            padding: 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .topic-body h3 {
            font-size: 19px;
            font-weight: 800;
            color: var(--ink);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .topic-body p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-sub);
            margin: 0 0 20px;
            flex: 1;
        }

        .topic-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-weak);
            border-top: 1px solid #eef3f8;
            padding-top: 16px;
        }

        /* ===== CTA Band ===== */
        .cta-band {
            background: var(--bg-deep);
            color: #fff;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: "";
            position: absolute;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(31, 111, 181, .3);
            top: -140px;
            right: -80px;
            filter: blur(30px);
        }

        .cta-band .grid-container {
            position: relative;
            z-index: 2;
        }

        .cta-band h2 {
            font-size: 34px;
            font-weight: 900;
            margin: 0 0 14px;
            color: #fff;
            letter-spacing: -.01em;
        }

        .cta-band p {
            font-size: 17px;
            color: rgba(247, 251, 255, .84);
            max-width: 620px;
            margin: 0 0 30px;
            line-height: 1.8;
        }

        .cta-band .btn {
            margin-right: 12px;
        }

        .cta-note {
            font-size: 13px;
            color: rgba(247, 251, 255, .6);
            margin-top: 14px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
        }

        .faq-list {
            max-width: 880px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--line);
            border-radius: 18px;
            margin-bottom: 14px;
            background: #fff;
            transition: border-color .2s, box-shadow .2s;
            overflow: hidden;
        }

        .faq-item.open {
            border-color: rgba(31, 111, 181, .35);
            box-shadow: 0 6px 20px rgba(16, 35, 65, .04);
        }

        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 12px;
            text-align: left;
            padding: 20px 24px;
            background: transparent;
            border: 0;
            cursor: pointer;
            color: var(--ink);
            font-size: 16px;
            font-weight: 700;
            transition: background .2s;
        }

        .faq-q .faq-icon {
            width: 34px;
            height: 34px;
            flex-shrink: 0;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand-soft);
            color: var(--brand-primary);
            font-size: 16px;
            transition: transform .3s ease, background .3s ease;
        }

        .faq-item.open .faq-q .faq-icon {
            transform: rotate(45deg);
            background: var(--brand-primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            padding: 0 24px;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s ease;
            color: var(--text-sub);
            font-size: 15.5px;
            line-height: 1.85;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 24px 22px 70px;
        }

        /* ===== Bottom CTA ===== */
        .bottom-cta {
            background: linear-gradient(135deg, var(--bg-ice), #f8fbff);
            padding: 64px 0;
        }

        .bottom-cta-box {
            background: #fff;
            border-radius: 28px;
            padding: 46px;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }

        .bottom-cta-box h2 {
            font-size: 28px;
            font-weight: 900;
            margin: 0 0 8px;
            color: var(--ink);
        }

        .bottom-cta-box p {
            margin: 0;
            color: var(--text-sub);
            font-size: 16px;
            max-width: 620px;
            line-height: 1.8;
        }

        .btn-wrap {
            flex-shrink: 0;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #f1f6fb;
            border-top: 1px solid #e2ebf3;
            padding: 56px 0 28px;
            font-size: 15px;
        }

        .footer-top {
            padding-bottom: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2.2fr 1fr 1fr 1.2fr;
            gap: 40px;
        }

        .footer-des .brand-lockup {
            margin-bottom: 14px;
        }

        .footer-des p {
            margin: 0;
            color: var(--text-sub);
            line-height: 1.85;
            max-width: 360px;
        }

        .footer-head {
            font-size: 16px;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-head::after {
            content: "";
            position: absolute;
            width: 24px;
            height: 3px;
            border-radius: 3px;
            background: var(--brand-primary);
            bottom: 0;
            left: 0;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: var(--text-sub);
            line-height: 1.6;
            transition: color .2s;
        }

        .footer-links a:hover {
            color: var(--brand-primary);
        }

        .footer-bottom {
            border-top: 1px solid #e0e9f2;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-weak);
        }

        /* ===== Mobile ===== */
        @media (max-width: 1100px) {
            .main-nav {
                gap: 2px;
            }
            .nav-link {
                padding: 0 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 900px) {
            .site-header {
                background: rgba(255, 255, 255, .85);
            }

            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, .96);
                backdrop-filter: blur(18px);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px 22px;
                border-bottom: 1px solid var(--line);
                transform: translateY(-12px);
                opacity: 0;
                pointer-events: none;
                transition: opacity .25s ease, transform .25s ease;
                margin: 0;
                height: auto;
                display: flex;
                gap: 6px;
                box-shadow: 0 18px 40px rgba(16, 35, 65, .08);
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-link {
                height: 48px;
                width: 100%;
                justify-content: flex-start;
                border-radius: 14px;
                font-size: 17px;
            }

            .nav-toggle {
                display: block;
            }

            .nav-toggle.open span:nth-child(1) {
                transform: translateY(7px) rotate(45deg);
            }
            .nav-toggle.open span:nth-child(2) {
                opacity: 0;
            }
            .nav-toggle.open span:nth-child(3) {
                transform: translateY(-7px) rotate(-45deg);
            }

            .cat-hero {
                padding: calc(var(--nav-height) + 36px) 0 54px;
            }

            .cat-hero-inner {
                flex-direction: column;
                gap: 32px;
            }

            .cat-hero-copy {
                max-width: 100%;
            }

            .cat-hero-copy h1 {
                font-size: 36px;
            }

            .cat-hero-visual {
                width: 100%;
            }

            .section-pad {
                padding: 64px 0;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .bottom-cta-box {
                flex-direction: column;
                align-items: flex-start;
                padding: 32px;
            }
        }

        @media (max-width: 640px) {
            .header-bar {
                padding: 0 16px;
                gap: 12px;
            }

            .brand-mark {
                width: 36px;
                height: 36px;
                font-size: 17px;
                border-radius: 12px;
            }

            .brand-name strong {
                font-size: 16px;
            }

            .brand-name small {
                font-size: 10px;
            }

            .header-btn {
                display: none;
            }

            .icon-btn {
                width: 40px;
                height: 40px;
            }

            .main-nav {
                top: calc(var(--nav-height) - 2px);
                padding: 14px 16px 20px;
            }

            .header-search-panel {
                padding: 0 16px;
            }

            .cat-hero {
                padding: calc(var(--nav-height) + 30px) 0 40px;
            }

            .cat-hero-copy h1 {
                font-size: 31px;
                line-height: 1.25;
            }

            .cat-hero-copy p.lead {
                font-size: 16px;
                line-height: 1.8;
            }

            .hero-btns .btn {
                width: 100%;
            }

            .hero-note {
                font-size: 13px;
                flex-wrap: wrap;
            }

            .highlight-item {
                padding: 8px 0;
                border-bottom: 1px solid rgba(15, 50, 90, .05);
            }

            .highlight-item:last-child {
                border-bottom: 0;
            }

            .feature-card {
                padding: 24px 20px;
            }

            .scene-card {
                height: 340px;
                margin-bottom: 10px;
            }

            .topic-thumb {
                height: 200px;
            }

            .topic-body {
                padding: 20px;
            }

            .cta-band {
                padding: 54px 0;
            }

            .cta-band h2 {
                font-size: 26px;
            }

            .cta-band .btn {
                width: 100%;
                margin-bottom: 8px;
            }

            .faq-q {
                padding: 17px 16px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 16px;
                font-size: 14.5px;
            }

            .faq-item.open .faq-answer {
                padding: 0 16px 18px;
            }

            .faq-item.open .faq-answer {
                padding-left: 60px;
            }

            .bottom-cta-box {
                padding: 28px 22px;
            }

            .btn-wrap .btn {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 26px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 6px;
            }
        }

        @media (max-width: 380px) {
            .brand-name small {
                display: none;
            }
            .cat-hero-copy h1 {
                font-size: 28px;
            }
        }

/* roulang page: article */
:root {
        --brand: #1f6fb5;
        --brand-deep: #124c81;
        --brand-soft: #e9f1f9;
        --accent: #fa6a43;
        --accent-deep: #d94b24;
        --bg: #f4f8fc;
        --surface: #ffffff;
        --ink: #172033;
        --ink-soft: #475569;
        --muted: #8296ab;
        --line: #dfe9f2;
        --line-light: #edf3f9;
        --card-radius: 24px;
        --small-radius: 14px;
        --shadow-card: 0 2px 4px rgba(23, 45, 75, .05), 0 16px 30px rgba(23, 45, 75, .06);
        --shadow-lift: 0 10px 22px rgba(23, 45, 75, .10), 0 24px 44px rgba(23, 45, 75, .08);
        --nav-height: 74px;
        --font-sys: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
    }

    * {
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        background: var(--bg);
        color: var(--ink);
        font-family: var(--font-sys);
        font-size: 16px;
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
    }

    img {
        max-width: 100%;
        display: block;
    }

    a {
        color: var(--brand);
        text-decoration: none;
        transition: color .22s ease, border .22s ease, box-shadow .22s ease, transform .22s ease;
    }

    a:hover {
        color: var(--brand-deep);
    }

    button {
        font-family: inherit;
        border: 0;
        background: none;
        cursor: pointer;
    }

    .grid-container {
        max-width: 1320px;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        height: 48px;
        padding: 0 24px;
        border-radius: 999px;
        border: 1px solid transparent;
        font-size: 15px;
        font-weight: 700;
        line-height: 1.2;
        transition: all .22s ease;
        white-space: nowrap;
    }

    .btn-primary {
        background: var(--brand);
        color: #fff;
        box-shadow: 0 8px 18px rgba(31, 111, 181, .20);
    }

    .btn-primary:hover {
        background: var(--brand-deep);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 12px 24px rgba(31, 111, 181, .24);
    }

    .btn-primary:active {
        transform: scale(.97);
    }

    .btn-accent {
        background: var(--accent);
        color: #fff;
        box-shadow: 0 8px 18px rgba(250, 106, 67, .22);
    }

    .btn-accent:hover {
        background: var(--accent-deep);
        color: #fff;
        transform: translateY(-2px);
    }

    .btn-light {
        background: #fff;
        color: var(--brand-deep);
    }

    .btn-light:hover {
        background: var(--brand-soft);
        color: var(--brand-deep);
        box-shadow: 0 10px 22px rgba(0, 0, 0, .08);
        transform: translateY(-2px);
    }

    .btn-ghost {
        background: transparent;
        color: var(--brand-deep);
        border-color: rgba(31, 111, 181, .32);
    }

    .btn-ghost:hover {
        background: rgba(31, 111, 181, .06);
        border-color: var(--brand);
        color: var(--brand-deep);
        transform: translateY(-2px);
    }

    .btn-small {
        height: 40px;
        padding: 0 18px;
        font-size: 14px;
    }

    .eyebrow {
        display: inline-block;
        background: rgba(31, 111, 181, .10);
        color: var(--brand-deep);
        border-radius: 999px;
        padding: 6px 14px;
        font-size: 13px;
        font-weight: 700;
        letter-spacing: .02em;
        margin-bottom: 10px;
    }

    .section-head {
        margin-bottom: 28px;
    }

    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 100;
        height: var(--nav-height);
        display: flex;
        align-items: center;
        background: rgba(255, 255, 255, .55);
        backdrop-filter: blur(18px) saturate(180%);
        -webkit-backdrop-filter: blur(18px) saturate(180%);
        border-bottom: 1px solid rgba(255, 255, 255, .6);
        transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
    }

    .site-header.is-scrolled,
    .site-header.nav-open {
        background: rgba(255, 255, 255, .94);
        border-bottom: 1px solid rgba(31, 91, 145, .08);
        box-shadow: 0 6px 20px rgba(23, 45, 75, .05);
    }

    .header-bar {
        width: 100%;
        max-width: 1320px;
        margin: 0 auto;
        padding: 0 24px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
    }

    .brand-lockup {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }

    .brand-mark {
        width: 42px;
        height: 42px;
        border-radius: 15px;
        background: linear-gradient(145deg, var(--brand), #4b9bdd);
        color: #fff;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        box-shadow: 0 6px 14px rgba(31, 111, 181, .24);
    }

    .brand-name strong {
        display: block;
        font-size: 20px;
        line-height: 1.15;
        color: var(--ink);
        letter-spacing: -.01em;
        font-weight: 800;
    }

    .brand-name small {
        display: block;
        margin-top: 3px;
        font-size: 11px;
        color: var(--muted);
        letter-spacing: .12em;
        font-weight: 400;
    }

    .main-nav {
        display: flex;
        align-items: center;
        gap: 6px;
        margin: 0 auto;
    }

    .nav-link {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 42px;
        padding: 0 18px;
        border-radius: 999px;
        color: var(--ink-soft);
        font-size: 15px;
        font-weight: 600;
        transition: all .22s ease;
    }

    .nav-link:hover {
        color: var(--brand-deep);
        background: rgba(31, 111, 181, .08);
    }

    .nav-link.active {
        color: var(--brand-deep);
        background: rgba(31, 111, 181, .14);
    }

    .header-actions {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }

    .btn-header {
        margin-left: 4px;
    }

    .icon-btn {
        width: 42px;
        height: 42px;
        border-radius: 50%;
        border: 1px solid var(--line);
        background: rgba(255, 255, 255, .8);
        color: var(--brand-deep);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
        transition: all .22s ease;
    }

    .icon-btn:hover {
        color: #fff;
        background: var(--brand);
        border-color: var(--brand);
        transform: translateY(-1px);
    }

    .nav-toggle {
        display: none;
        width: 42px;
        height: 42px;
        border-radius: 12px;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        border: 1px solid var(--line);
        background: #fff;
    }

    .nav-toggle span {
        display: block;
        width: 18px;
        height: 2px;
        border-radius: 4px;
        background: var(--brand-deep);
        margin: 3px 0;
        transition: all .28s ease;
    }

    .site-header.nav-open .nav-toggle span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .site-header.nav-open .nav-toggle span:nth-child(2) {
        opacity: 0;
        transform: translateX(-8px);
    }

    .site-header.nav-open .nav-toggle span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .header-search-panel {
        position: absolute;
        top: calc(100% + 10px);
        right: 24px;
        width: min(500px, calc(100vw - 48px));
        z-index: 99;
        background: #fff;
        border: 1px solid var(--line);
        border-radius: 999px;
        box-shadow: var(--shadow-lift);
        padding: 6px;
        visibility: hidden;
        opacity: 0;
        transform: translateY(-8px);
        pointer-events: none;
        transition: all .3s ease;
    }

    .site-header.search-open .header-search-panel {
        visibility: visible;
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .search-form {
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .search-form input {
        flex: 1;
        min-width: 0;
        height: 42px;
        border: 0;
        border-radius: 999px;
        padding: 0 18px;
        font-size: 14px;
        color: var(--ink);
        background: transparent;
        outline: none;
    }

    .search-form input::placeholder {
        color: #a5b7ca;
    }

    .search-form button {
        width: 42px;
        height: 42px;
        border-radius: 50%;
        background: var(--brand);
        color: #fff;
        font-size: 15px;
        flex-shrink: 0;
        transition: background .2s;
    }

    .search-form button:hover {
        background: var(--brand-deep);
    }

    .article-hero {
        position: relative;
        min-height: 360px;
        padding: 158px 0 96px;
        display: flex;
        align-items: center;
        background:
            linear-gradient(105deg, rgba(246, 250, 253, .98) 0%, rgba(232, 242, 250, .92) 48%, rgba(208, 226, 242, .72) 100%),
            url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
        border-bottom: 1px solid rgba(31, 111, 181, .08);
        overflow: hidden;
    }

    .article-hero::after {
        content: '';
        position: absolute;
        width: 320px;
        height: 320px;
        right: -80px;
        top: -100px;
        border-radius: 50%;
        background: rgba(31, 111, 181, .10);
        filter: blur(10px);
        pointer-events: none;
    }

    .article-hero .grid-container {
        position: relative;
        z-index: 2;
    }

    .breadcrumbs {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
        font-size: 14px;
        color: var(--muted);
        margin-bottom: 16px;
    }

    .breadcrumbs a {
        color: rgba(31, 111, 181, .88);
        font-weight: 500;
    }

    .breadcrumbs a:hover {
        color: var(--brand-deep);
    }

    .breadcrumbs .sep {
        color: #a9bbcc;
        font-size: 13px;
    }

    .breadcrumbs .current {
        color: var(--ink-soft);
        font-weight: 600;
    }

    .hero-caption {
        display: inline-block;
        color: var(--brand-deep);
        background: rgba(255, 255, 255, .65);
        border: 1px solid rgba(31, 111, 181, .14);
        padding: 6px 14px;
        border-radius: 999px;
        font-size: 13px;
        font-weight: 700;
        margin-bottom: 14px;
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
    }

    .article-title {
        margin: 0;
        max-width: 1000px;
        color: #0d3d66;
        font-size: clamp(30px, 4.6vw, 48px);
        font-weight: 900;
        line-height: 1.28;
        letter-spacing: -.02em;
    }

    .article-lead {
        margin-top: 16px;
        color: var(--ink-soft);
        font-size: 17px;
        max-width: 820px;
    }

    .article-shell {
        padding: 64px 0 96px;
    }

    .article-card {
        background: var(--surface);
        border: 1px solid rgba(31, 111, 181, .08);
        border-radius: 28px;
        box-shadow: var(--shadow-card);
        padding: clamp(24px, 5vw, 54px);
    }

    .article-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 14px;
        padding-bottom: 22px;
        margin-bottom: 30px;
        border-bottom: 1px solid var(--line-light);
    }

    .article-meta .meta-group {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
    }

    .cat-badge {
        background: var(--brand);
        color: #fff;
        border-radius: 999px;
        padding: 7px 15px;
        font-size: 13px;
        font-weight: 600;
    }

    .meta-date {
        color: var(--muted);
        font-size: 14px;
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .meta-source {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: var(--brand-deep);
        background: rgba(31, 111, 181, .08);
        border-radius: 999px;
        padding: 7px 14px;
        font-size: 13px;
        font-weight: 600;
    }

    .article-body {
        color: var(--ink);
        font-size: 17px;
        line-height: 2;
    }

    .article-body p {
        margin: 0 0 22px;
        line-height: 2;
    }

    .article-body h2 {
        font-size: 27px;
        font-weight: 800;
        line-height: 1.4;
        margin: 42px 0 18px;
        padding-bottom: 12px;
        border-bottom: 1px solid var(--line-light);
        color: #0d3d66;
    }

    .article-body h3 {
        font-size: 21px;
        font-weight: 800;
        line-height: 1.5;
        margin: 30px 0 14px;
        color: var(--ink);
    }

    .article-body img {
        width: auto;
        max-width: 100%;
        border-radius: 18px;
        margin: 26px 0;
        box-shadow: var(--shadow-card);
    }

    .article-body blockquote {
        margin: 34px 0;
        padding: 20px 26px;
        background: var(--brand-soft);
        border-left: 4px solid var(--brand);
        border-radius: 0 16px 16px 0;
        color: var(--ink-soft);
        font-size: 17px;
    }

    .article-body blockquote p:last-child {
        margin-bottom: 0;
    }

    .article-body ul,
    .article-body ol {
        padding-left: 1.3em;
        margin: 0 0 24px;
    }

    .article-body li {
        margin-bottom: 10px;
        line-height: 1.9;
    }

    .article-body li::marker {
        color: var(--brand);
    }

    .article-body a {
        color: var(--brand);
        border-bottom: 1px solid rgba(31, 111, 181, .28);
        font-weight: 600;
        padding-bottom: 1px;
    }

    .article-body a:hover {
        color: var(--accent-deep);
        border-color: rgba(250, 106, 67, .5);
    }

    .article-body code {
        background: #eef4fa;
        color: #1f5b8f;
        border-radius: 8px;
        padding: 2px 8px;
        font-size: .92em;
        font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    }

    .article-body pre {
        background: #0f253c;
        color: #e8f2fb;
        border-radius: 18px;
        padding: 22px 24px;
        overflow-x: auto;
        font-size: 14px;
        line-height: 1.8;
        margin: 28px 0;
        box-shadow: var(--shadow-card);
    }

    .article-body pre code {
        background: transparent;
        color: inherit;
        padding: 0;
    }

    .article-body table {
        width: 100%;
        border-collapse: collapse;
        margin: 28px 0;
        font-size: 15px;
        background: #f8fbfe;
        border-radius: 16px;
        overflow: hidden;
        border: 1px solid var(--line-light);
    }

    .article-body th,
    .article-body td {
        padding: 13px 16px;
        border: 1px solid #e3edf5;
        text-align: left;
    }

    .article-body th {
        background: var(--brand-soft);
        color: var(--brand-deep);
        font-weight: 700;
    }

    .article-pagination {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        border-top: 1px solid var(--line-light);
        padding-top: 26px;
        margin-top: 42px;
    }

    .pag-link {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-weight: 700;
        color: var(--brand-deep);
        padding: 8px 16px;
        border-radius: 999px;
        background: rgba(31, 111, 181, .08);
        transition: all .22s ease;
    }

    .pag-link:hover {
        background: var(--brand);
        color: #fff;
        transform: translateY(-2px);
    }

    .article-empty {
        background: var(--surface);
        border-radius: 28px;
        border: 1px solid var(--line);
        box-shadow: var(--shadow-card);
        padding: clamp(36px, 6vw, 64px);
        text-align: center;
    }

    .article-empty .empty-icon {
        width: 76px;
        height: 76px;
        border-radius: 26px;
        background: var(--brand-soft);
        color: var(--brand);
        font-size: 30px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 20px;
    }

    .article-empty h2 {
        font-size: 26px;
        font-weight: 800;
        color: #0d3d66;
        margin-bottom: 12px;
    }

    .article-empty p {
        color: var(--ink-soft);
        max-width: 440px;
        margin: 0 auto 24px;
    }

    .related-section {
        padding: 88px 0 96px;
        background: linear-gradient(180deg, #ffffff 0%, #f8fbfe 100%);
        border-top: 1px solid var(--line-light);
    }

    .section-title-row {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        gap: 20px;
        margin-bottom: 32px;
    }

    .section-title-row h2 {
        font-size: 32px;
        font-weight: 900;
        color: #0d3d66;
        margin: 0;
        line-height: 1.25;
    }

    .text-link {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-weight: 700;
        color: var(--brand);
        font-size: 14px;
    }

    .text-link:hover {
        color: var(--brand-deep);
        gap: 12px;
    }

    .rel-card {
        display: flex;
        flex-direction: row;
        align-items: stretch;
        gap: 0;
        min-height: 160px;
        height: 100%;
        background: #fff;
        border: 1px solid var(--line);
        border-radius: 20px;
        overflow: hidden;
        box-shadow: 0 2px 8px rgba(23, 45, 75, .03);
        transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }

    .rel-card:hover {
        transform: translateY(-5px);
        border-color: rgba(31, 111, 181, .26);
        box-shadow: var(--shadow-lift);
    }

    .rel-thumb-wrap {
        position: relative;
        flex: 0 0 156px;
        min-height: 160px;
        overflow: hidden;
        background: var(--brand-soft);
    }

    .rel-thumb-wrap img {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .4s ease;
    }

    .rel-card:hover .rel-thumb-wrap img {
        transform: scale(1.05);
    }

    .rel-body {
        flex: 1;
        padding: 22px 24px;
        min-width: 0;
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 8px;
    }

    .rel-body .tag {
        font-size: 12px;
        color: var(--brand);
        font-weight: 700;
    }

    .rel-body b {
        display: block;
        font-size: 18px;
        line-height: 1.5;
        color: var(--ink);
        font-weight: 800;
    }

    .rel-body p {
        margin: 0;
        color: var(--muted);
        font-size: 13px;
        line-height: 1.6;
    }

    .middle-cta {
        padding: 48px 0 96px;
        background: #f8fbfe;
    }

    .cta-panel {
        position: relative;
        background:
            linear-gradient(120deg, rgba(15, 61, 102, .98) 0%, rgba(31, 111, 181, .94) 62%, rgba(75, 155, 221, .94)),
            url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        border-radius: 30px;
        padding: clamp(30px, 5vw, 52px);
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 28px;
        color: #fff;
        box-shadow: 0 28px 60px rgba(31, 111, 181, .26);
        overflow: hidden;
    }

    .cta-panel::after {
        content: '';
        position: absolute;
        width: 260px;
        height: 260px;
        right: -90px;
        bottom: -120px;
        background: rgba(255, 255, 255, .12);
        border-radius: 50%;
        pointer-events: none;
    }

    .cta-content {
        max-width: 680px;
        position: relative;
        z-index: 1;
    }

    .cta-content h2 {
        font-size: clamp(24px, 3vw, 36px);
        font-weight: 900;
        margin: 0 0 14px;
        color: #fff;
        line-height: 1.3;
    }

    .cta-content p {
        margin: 0;
        color: rgba(237, 246, 255, .9);
        font-size: 16px;
        line-height: 1.8;
    }

    .cta-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        position: relative;
        z-index: 1;
        flex-shrink: 0;
    }

    .site-footer {
        background: #e7f1f9;
        border-top: 1px solid #d9e6f2;
        padding: 68px 0 28px;
        color: var(--ink-soft);
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.3fr .8fr .8fr 1fr;
        gap: 44px;
    }

    .footer-des p {
        margin: 16px 0 0;
        color: #51677e;
        font-size: 14px;
        line-height: 1.9;
        max-width: 320px;
    }

    .footer-head {
        color: #123f68;
        font-size: 15px;
        font-weight: 800;
        margin-bottom: 16px;
    }

    .footer-links,
    .footer-bottom-list {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .footer-links li {
        margin-bottom: 12px;
    }

    .footer-links a {
        color: #4f6881;
        font-size: 14px;
        line-height: 1.5;
        transition: color .2s ease, padding-left .2s ease;
    }

    .footer-links a:hover {
        color: var(--brand);
        padding-left: 4px;
    }

    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 10px;
        border-top: 1px solid rgba(31, 111, 181, .15);
        margin-top: 42px;
        padding-top: 24px;
        font-size: 13px;
        color: #748da6;
    }

    .footer-bottom span {
        white-space: nowrap;
    }

    @media screen and (max-width: 1199px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 36px;
        }
    }

    @media screen and (max-width: 991px) {
        .main-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            margin: 0;
            flex-direction: column;
            align-items: stretch;
            gap: 4px;
            padding: 16px 18px 24px;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-bottom: 1px solid var(--line);
            box-shadow: 0 20px 30px rgba(23, 45, 75, .08);
        }

        .site-header.nav-open .main-nav {
            display: flex;
        }

        .nav-link {
            justify-content: flex-start;
            height: 48px;
            padding: 0 16px;
            border-radius: 14px;
        }

        .nav-toggle,
        .site-header.nav-open .nav-toggle {
            display: inline-flex;
        }
    }

    @media screen and (max-width: 640px) {
        body {
            font-size: 15px;
        }

        .grid-container {
            padding-left: 18px;
            padding-right: 18px;
        }

        .header-bar {
            padding: 0 18px;
        }

        .brand-name strong {
            font-size: 17px;
        }

        .brand-name small {
            font-size: 10px;
        }

        .brand-mark {
            width: 38px;
            height: 38px;
            border-radius: 13px;
            font-size: 17px;
        }

        .header-btn {
            display: none;
        }

        .article-hero {
            min-height: 320px;
            padding: 124px 0 60px;
        }

        .article-title {
            font-size: 29px;
        }

        .article-lead {
            font-size: 15px;
        }

        .article-shell {
            padding: 44px 0 64px;
        }

        .article-card {
            padding: 22px 20px;
            border-radius: 22px;
        }

        .article-meta {
            gap: 10px;
        }

        .article-body {
            font-size: 16px;
            line-height: 1.9;
        }

        .article-body p {
            line-height: 1.9;
        }

        .article-body h2 {
            font-size: 22px;
            margin-top: 32px;
        }

        .article-body h3 {
            font-size: 18px;
        }

        .related-section {
            padding: 56px 0 68px;
        }

        .section-title-row {
            align-items: flex-start;
            flex-direction: column;
            gap: 12px;
        }

        .section-title-row h2 {
            font-size: 24px;
        }

        .rel-card {
            flex-direction: column;
            min-height: 0;
        }

        .rel-thumb-wrap {
            flex: none;
            width: 100%;
            height: 150px;
            min-height: 0;
        }

        .rel-body {
            padding: 18px 18px 22px;
        }

        .cta-panel {
            flex-direction: column;
            align-items: flex-start;
            padding: 28px 24px;
            border-radius: 24px;
        }

        .cta-actions .btn {
            width: 100%;
        }

        .footer-grid {
            grid-template-columns: 1fr;
            gap: 26px;
        }

        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
        }
    }

    @media screen and (max-width: 420px) {
        .brand-mark {
            width: 34px;
            height: 34px;
            border-radius: 11px;
            font-size: 15px;
        }

        .brand-name strong {
            font-size: 16px;
        }

        .icon-btn {
            width: 38px;
            height: 38px;
        }

        .nav-toggle {
            width: 38px;
            height: 38px;
        }

        .article-card {
            padding: 18px 16px;
        }
    }

/* roulang page: category2 */
:root {
            --brand: #1f6fb5;
            --brand-deep: #0f4c81;
            --brand-ink: #0d2f52;
            --brand-soft: #eaf3fb;
            --brand-mist: #f4f8fc;
            --accent: #ff7a3c;
            --accent-dark: #ea5e22;
            --text-main: #172033;
            --text-second: #475569;
            --text-weak: #7d91a6;
            --white: #ffffff;
            --line: rgba(31, 111, 181, 0.16);
            --line-soft: rgba(23, 32, 51, 0.09);
            --card-radius: 20px;
            --radius-lg: 26px;
            --radius-pill: 999px;
            --nav-height: 76px;
            --section-space: 96px;
            --shadow-card: 0 2px 4px rgba(16, 35, 65, .06), 0 16px 30px rgba(16, 35, 65, .07);
            --shadow-hover: 0 8px 22px rgba(16, 35, 65, .10), 0 22px 48px rgba(16, 35, 65, .10);
            --transition: .24s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
            background: #f6f9fc;
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: var(--brand);
            text-decoration: none;
            transition: color .2s ease;
        }

        a:hover {
            color: var(--brand-deep);
        }

        button {
            font-family: inherit;
        }

        input,
        textarea {
            font-family: inherit;
        }

        .grid-container {
            max-width: 1260px;
        }

        section,
        footer,
        header {
            width: 100%;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            z-index: 1000;
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.72);
            transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
        }

        .site-header.is-scrolled {
            background: rgba(255, 255, 255, 0.92);
            border-bottom: 1px solid rgba(15, 50, 90, 0.08);
            box-shadow: 0 12px 36px rgba(15, 50, 90, 0.08);
        }

        .header-bar {
            height: var(--nav-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 32px;
            max-width: 1320px;
            margin: 0 auto;
            gap: 24px;
        }

        .brand-lockup {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            min-width: 0;
        }

        .brand-mark {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: linear-gradient(145deg, #eaf3fb, #d6e8f7);
            border: 1px solid rgba(31, 111, 181, 0.16);
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
        }

        .brand-name {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            min-width: 0;
        }

        .brand-name strong {
            font-size: 17px;
            font-weight: 800;
            color: var(--brand-deep);
            white-space: nowrap;
        }

        .brand-name small {
            font-size: 11px;
            color: #6b8aa8;
            letter-spacing: .04em;
            margin-top: 3px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0 auto;
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 42px;
            padding: 0 16px;
            border-radius: var(--radius-pill);
            color: var(--text-second);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: .01em;
            transition: all .22s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--brand);
            background: rgba(31, 111, 181, 0.08);
        }

        .nav-link.active {
            color: #fff;
            background: var(--brand);
            font-weight: 700;
            box-shadow: 0 6px 14px rgba(31, 111, 181, 0.22);
        }

        .nav-link.active:hover {
            color: #fff;
            background: #1c639f;
        }

        .nav-link.active::after {
            display: none;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-actions .icon-btn {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            border: 1px solid rgba(31, 111, 181, 0.16);
            background: rgba(255, 255, 255, 0.72);
            color: var(--brand-deep);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all .22s ease;
        }

        .header-actions .icon-btn:hover {
            color: #fff;
            background: var(--brand);
            border-color: var(--brand);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            padding: 14px 28px;
            border-radius: var(--radius-pill);
            font-size: 15px;
            font-weight: 700;
            line-height: 1;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .24s ease;
            background: transparent;
            text-align: center;
        }

        .btn-primary {
            background: var(--brand);
            color: #fff;
            box-shadow: 0 10px 24px rgba(31, 111, 181, 0.26);
        }

        .btn-primary:hover {
            background: #1b619d;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 14px 28px rgba(31, 111, 181, 0.30);
        }

        .btn-primary:active {
            transform: scale(.98);
        }

        .btn-outline {
            border-color: rgba(31, 111, 181, 0.35);
            color: var(--brand-deep);
            background: rgba(255, 255, 255, 0.52);
        }

        .btn-outline:hover {
            color: #fff;
            background: var(--brand);
            border-color: var(--brand);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: scale(.98);
        }

        .btn-small {
            padding: 10px 20px;
            font-size: 14px;
        }

        .header-btn {
            white-space: nowrap;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: 1px solid rgba(31, 111, 181, 0.16);
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.85);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            padding: 0;
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--brand-deep);
            border-radius: 6px;
            transition: transform .25s ease, opacity .25s ease;
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .header-search-panel {
            position: absolute;
            top: calc(var(--nav-height) + 8px);
            right: 26px;
            width: min(420px, calc(100vw - 40px));
            background: #fff;
            border-radius: 18px;
            box-shadow: 0 18px 44px rgba(16, 35, 65, 0.16);
            border: 1px solid var(--line);
            padding: 10px;
            opacity: 0;
            transform: translateY(-10px);
            pointer-events: none;
            transition: opacity .22s ease, transform .22s ease;
            z-index: 1002;
        }

        .header-search-panel.open {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .search-form {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .search-form input {
            flex: 1;
            height: 44px;
            border-radius: 12px;
            border: 1px solid rgba(31, 111, 181, 0.2);
            padding: 0 16px;
            font-size: 15px;
            outline: none;
            color: var(--text-main);
            transition: all .2s ease;
            background: #f6f9fc;
        }

        .search-form input:focus {
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(31, 111, 181, .14);
        }

        .search-form button {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            border: none;
            background: var(--brand);
            color: #fff;
            cursor: pointer;
            transition: background .2s ease;
        }

        .search-form button:hover {
            background: var(--brand-deep);
        }

        /* 分类页面首屏 */
        .category-hero {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            padding: calc(var(--nav-height) + 64px) 0 70px;
            background:
                linear-gradient(130deg, rgba(234, 243, 251, 0.97) 0%, rgba(255, 255, 255, 0.88) 48%, rgba(234, 243, 251, 0.75) 100%),
                url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            overflow: hidden;
        }

        .category-hero:before {
            content: "";
            position: absolute;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: rgba(31, 111, 181, .08);
            filter: blur(70px);
            top: -100px;
            right: 6%;
            pointer-events: none;
        }

        .category-hero:after {
            content: "";
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 122, 60, 0.07);
            filter: blur(80px);
            bottom: -70px;
            left: 16%;
            pointer-events: none;
        }

        .category-hero .grid-container {
            position: relative;
            z-index: 2;
        }

        .category-hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid rgba(31, 111, 181, 0.18);
            border-radius: var(--radius-pill);
            color: var(--brand-deep);
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .category-hero-tag i {
            color: var(--accent);
        }

        .hero-copy h1 {
            font-size: 50px;
            line-height: 1.24;
            font-weight: 900;
            color: var(--text-main);
            margin: 0 0 20px;
            letter-spacing: -0.02em;
        }

        .hero-copy h1 span {
            color: var(--brand);
        }

        .hero-lead {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-second);
            max-width: 68ch;
            margin-bottom: 30px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 24px;
        }

        .hero-note-line {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px 14px;
            color: var(--text-weak);
            font-size: 13px;
        }

        .hero-note-line i {
            color: var(--brand);
        }

        .hero-visual {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .watch-card {
            position: relative;
            width: min(420px, 100%);
            border-radius: 30px;
            overflow: hidden;
            background: #fff;
            box-shadow: 0 24px 42px rgba(16, 35, 65, 0.18);
            border: 6px solid rgba(255, 255, 255, 0.8);
            margin-left: auto;
        }

        .watch-card img {
            width: 100%;
            height: 520px;
            object-fit: cover;
            display: block;
        }

        .badge-live {
            position: absolute;
            top: 18px;
            left: 18px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 13px;
            background: rgba(12, 30, 55, 0.72);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: #fff;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .badge-live i {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #ff6a3d;
            display: inline-block;
            animation: pulse-red 1.6s infinite;
        }

        @keyframes pulse-red {
            0% { box-shadow: 0 0 0 0 rgba(255, 106, 61, 0.5); }
            70% { box-shadow: 0 0 0 7px rgba(255, 106, 61, 0); }
            100% { box-shadow: 0 0 0 0 rgba(255, 106, 61, 0); }
        }

        .watch-overlay {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            padding: 90px 20px 20px;
            background: linear-gradient(to top, rgba(8, 18, 34, .9) 0%, rgba(8, 18, 34, .25) 60%, transparent 100%);
            color: #fff;
        }

        .watch-overlay strong {
            display: block;
            font-size: 17px;
            margin-bottom: 5px;
            font-weight: 800;
        }

        .watch-overlay small {
            font-size: 12px;
            opacity: .78;
        }

        .section-space {
            padding: 96px 0;
        }

        .section-space-sm {
            padding: 68px 0;
        }

        .cat-band-dark {
            background: #12314f;
            color: #ecf3fa;
        }

        .section-head {
            max-width: 780px;
            margin: 0 auto 46px;
            text-align: center;
        }

        .section-head .eyebrow,
        .category-section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--brand);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .1em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-head h2,
        .category-section-head h2 {
            font-size: 34px;
            line-height: 1.32;
            color: var(--text-main);
            font-weight: 900;
            margin: 0 0 14px;
            letter-spacing: -0.02em;
        }

        .section-head p,
        .category-section-head p {
            color: var(--text-second);
            font-size: 16px;
            line-height: 1.8;
            margin: 0;
        }

        /* 迷你规格条 */
        .spec-strip {
            padding: 28px 0;
            background: #fff;
            border-bottom: 1px solid var(--line-soft);
        }

        .spec-list {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 18px 28px;
            padding: 0;
            margin: 0;
        }

        .spec-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-second);
            font-size: 14px;
            font-weight: 500;
        }

        .spec-list li i {
            color: var(--brand);
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--brand-soft);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
        }

        /* Why / 推荐理由 */
        .why-zone {
            padding: var(--section-space) 0;
        }

        .reason-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 30px 28px;
            height: 100%;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(31, 111, 181, .08);
            transition: all .24s ease;
            position: relative;
            overflow: hidden;
        }

        .reason-card:first-child {
            border-top: 4px solid var(--brand);
        }

        .reason-card:nth-child(2) {
            border-top: 4px solid var(--accent);
        }

        .reason-card:nth-child(3) {
            border-top: 4px solid #2aa88c;
        }

        .reason-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .reason-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--brand-soft);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
        }

        .reason-card:nth-child(2) .reason-icon {
            background: rgba(255, 122, 60, 0.12);
            color: var(--accent);
        }

        .reason-card:nth-child(3) .reason-icon {
            background: rgba(42, 168, 140, 0.12);
            color: #1f8874;
        }

        .reason-card h3 {
            font-size: 19px;
            font-weight: 800;
            margin: 0 0 12px;
            color: var(--text-main);
        }

        .reason-card p {
            font-size: 15px;
            line-height: 1.8;
            margin: 0;
            color: var(--text-second);
        }

        /* 特色大卡 */
        .featured-clips {
            padding: var(--section-space) 0;
            background: linear-gradient(180deg, #f6f9fc 0%, #eef5fb 100%);
        }

        .category-section-head {
            text-align: center;
            max-width: 820px;
            margin: 0 auto 44px;
        }

        .clip-feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(31, 111, 181, 0.1);
            height: 100%;
            transition: all .25s ease;
        }

        .clip-feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .clip-media {
            overflow: hidden;
            position: relative;
        }

        .clip-media img {
            height: 280px;
            width: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }

        .clip-feature-card:hover .clip-media img {
            transform: scale(1.04);
        }

        .clip-tag {
            position: absolute;
            z-index: 2;
            left: 16px;
            top: 16px;
            background: rgba(12, 30, 55, .66);
            backdrop-filter: blur(10px);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 6px 13px;
            border: 1px solid rgba(255, 255, 255, .22);
        }

        .clip-play {
            position: absolute;
            right: 16px;
            bottom: 16px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .9);
            color: var(--brand-deep);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 24px rgba(16, 35, 65, .2);
            font-size: 15px;
            backdrop-filter: blur(10px);
        }

        .clip-body {
            padding: 24px 24px 26px;
        }

        .clip-body .clip-kicker {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--brand);
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 9px;
        }

        .clip-body h3 {
            font-size: 21px;
            line-height: 1.45;
            font-weight: 800;
            margin: 0 0 10px;
            color: var(--text-main);
        }

        .clip-body p {
            font-size: 15px;
            line-height: 1.82;
            color: var(--text-second);
            margin: 0 0 18px;
        }

        .clip-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            padding-top: 16px;
            border-top: 1px solid var(--line-soft);
        }

        .clip-bottom .meta {
            font-size: 13px;
            color: var(--text-weak);
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .clip-bottom .go-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            font-size: 14px;
            color: var(--brand);
            transition: all .2s ease;
        }

        .clip-bottom .go-link:hover {
            gap: 10px;
            color: var(--brand-deep);
        }

        /* 分类方向 */
        .directions-zone {
            padding: var(--section-space) 0;
        }

        .dir-card {
            position: relative;
            border-radius: var(--card-radius);
            overflow: hidden;
            height: 320px;
            display: flex;
            align-items: flex-end;
            color: #fff;
            box-shadow: var(--shadow-card);
            transition: transform .25s ease, box-shadow .25s ease;
        }

        .dir-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .dir-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
            z-index: 0;
        }

        .dir-card:hover img {
            transform: scale(1.06);
        }

        .dir-card::after {
            content: "";
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(to top, rgba(8, 17, 30, .92) 0%, rgba(8, 17, 30, .22) 50%, rgba(8, 17, 30, .08) 100%);
        }

        .dir-info {
            position: relative;
            z-index: 2;
            padding: 28px 26px;
            width: 100%;
        }

        .dir-info .dir-icon {
            width: 43px;
            height: 43px;
            display: inline-flex;
            border-radius: 14px;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .16);
            border: 1px solid rgba(255, 255, 255, .24);
            color: #fff;
            margin-bottom: 14px;
            backdrop-filter: blur(8px);
        }

        .dir-info h3 {
            font-size: 22px;
            font-weight: 800;
            margin: 0 0 8px;
        }

        .dir-info p {
            margin: 0 0 14px;
            font-size: 14px;
            line-height: 1.72;
            opacity: .86;
        }

        .dir-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            border-bottom: 1px solid rgba(255, 255, 255, .6);
            padding-bottom: 3px;
            transition: all .2s ease;
        }

        .dir-link:hover {
            color: var(--accent);
            border-color: var(--accent);
        }

        .dir-pill {
            position: absolute;
            z-index: 2;
            right: 18px;
            top: 18px;
            background: rgba(12, 30, 55, .68);
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: var(--radius-pill);
            padding: 6px 13px;
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(8px);
        }

        /* 从高光延伸到其他栏目 */
        .bridge-zone {
            padding: var(--section-space) 0;
            background: var(--brand-mist);
        }

        .bridge-card {
            border-radius: var(--radius-lg);
            background: #fff;
            box-shadow: var(--shadow-card);
            padding: 32px;
            border-left: 5px solid var(--brand);
            height: 100%;
            transition: all .25s ease;
        }

        .bridge-card:nth-child(2) {
            border-left-color: var(--accent);
        }

        .bridge-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .bridge-card h3 {
            font-size: 20px;
            font-weight: 800;
            margin: 0 0 10px;
        }

        .bridge-card p {
            color: var(--text-second);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 18px;
        }

        .bridge-card .bridge-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            color: var(--brand);
            font-size: 15px;
        }

        .bridge-card:nth-child(2) .bridge-link {
            color: var(--accent-dark);
        }

        .bridge-card .bridge-link i {
            transition: transform .2s ease;
        }

        .bridge-card .bridge-link:hover i {
            transform: translateX(4px);
        }

        /* FAQ */
        .faq-area {
            padding: var(--section-space) 0;
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 0.85fr 1.5fr;
            gap: 42px;
            align-items: start;
        }

        .faq-guide {
            position: sticky;
            top: 106px;
        }

        .faq-guide .eyebrow {
            color: var(--brand);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .08em;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }

        .faq-guide h2 {
            font-size: 34px;
            line-height: 1.4;
            font-weight: 900;
            margin: 0 0 14px;
        }

        .faq-guide p {
            font-size: 15px;
            color: var(--text-second);
            line-height: 1.8;
            margin: 0 0 18px;
        }

        .faq-guide .guide-cta {
            background: var(--brand-soft);
            border-radius: 20px;
            padding: 22px;
            color: var(--text-main);
            font-size: 15px;
        }

        .faq-guide .guide-cta strong {
            display: block;
            margin-bottom: 4px;
            color: var(--brand-deep);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid rgba(31, 111, 181, .14);
            border-radius: 18px;
            padding: 0 22px;
            transition: all .3s ease;
            overflow: hidden;
        }

        .faq-item.is-open {
            border-color: rgba(31, 111, 181, .34);
            box-shadow: 0 10px 28px rgba(31, 111, 181, .08);
        }

        .faq-q {
            background: none;
            border: 0;
            width: 100%;
            display: flex;
            align-items: center;
            gap: 14px;
            justify-content: space-between;
            padding: 22px 0;
            cursor: pointer;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 700;
            text-align: left;
            transition: color .2s ease;
        }

        .faq-q:hover {
            color: var(--brand);
        }

        .faq-q-icon {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            border: 1px solid rgba(31, 111, 181, .26);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: background .25s ease, color .25s ease, transform .3s ease;
        }

        .faq-q-icon i {
            font-size: 13px;
        }

        .faq-item.is-open .faq-q-icon {
            background: var(--brand);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .42s ease;
        }

        .faq-a-inner {
            padding: 0 0 24px;
            color: var(--text-second);
            line-height: 1.82;
            font-size: 15px;
        }

        /* CTA */
        .cta-band {
            padding: 86px 0;
            background: #102c4a;
            color: #fff;
            background-image: linear-gradient(rgba(14, 38, 63, .93), rgba(14, 38, 63, .93)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
        }

        .cta-band-inner {
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
        }

        .cta-band-inner .eyebrow {
            color: #a7d0f0;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .1em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }

        .cta-band h2 {
            font-size: 38px;
            line-height: 1.3;
            font-weight: 900;
            margin: 0 0 18px;
            color: #fff;
        }

        .cta-band p {
            color: #c5d8e9;
            font-size: 16px;
            margin-bottom: 30px;
            line-height: 1.8;
        }

        .btn-white {
            background: #fff;
            color: #102c4a;
            border-color: #fff;
        }

        .btn-white:hover {
            background: #eaf3fb;
            color: #102c4a;
            border-color: #eaf3fb;
            transform: translateY(-2px);
        }

        .btn-line-light {
            border-color: rgba(255, 255, 255, .5);
            color: #fff;
            background: rgba(255,255,255,.06);
        }

        .btn-line-light:hover {
            border-color: #fff;
            background: rgba(255,255,255,.16);
            transform: translateY(-2px);
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
        }

        .cta-ps {
            margin-top: 14px;
            font-size: 13px;
            opacity: .8;
        }

        /* 页脚 */
        .site-footer {
            background: #edf5fb;
            border-top: 1px solid #d6e6f4;
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr .8fr .8fr 1fr;
            gap: 42px;
            padding-bottom: 44px;
        }

        .footer-des {
            max-width: 320px;
        }

        .footer-des p {
            color: var(--text-second);
            font-size: 14px;
            line-height: 1.8;
            margin-top: 18px;
        }

        .footer-head {
            color: var(--brand-deep);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 11px;
        }

        .footer-links a {
            color: var(--text-second);
            font-size: 14px;
            line-height: 1.5;
        }

        .footer-links a:hover {
            color: var(--brand);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(31, 111, 181, .14);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            color: var(--text-weak);
            font-size: 13px;
        }

        .footer-bottom span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* 通用 hover */
        .focus-outline:focus-visible,
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(31, 111, 181, .45);
            outline-offset: 2px;
        }

        @media screen and (max-width: 1024px) {
            :root {
                --section-space: 78px;
            }

            .hero-copy h1 {
                font-size: 42px;
            }

            .watch-card img {
                height: 420px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media screen and (max-width: 900px) {
            .header-bar {
                padding: 0 22px;
            }

            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 14px;
                right: 14px;
                background: rgba(255, 255, 255, .98);
                border-radius: 22px;
                padding: 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                box-shadow: 0 16px 42px rgba(19, 50, 92, .12);
                border: 1px solid var(--line);
                transform: translateY(-12px);
                opacity: 0;
                pointer-events: none;
                transition: all .25s ease;
                z-index: 1001;
                backdrop-filter: blur(18px);
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-link {
                justify-content: flex-start;
                height: 48px;
                padding: 0 16px;
            }

            .nav-toggle {
                display: flex;
            }
        }

        @media screen and (max-width: 768px) {
            .category-hero {
                min-height: auto;
                padding: 120px 0 62px;
            }

            .hero-copy h1 {
                font-size: 32px;
            }

            .hero-lead {
                font-size: 16px;
            }

            .watch-card {
                margin: 42px auto 0;
            }

            .watch-card img {
                height: 430px;
            }

            .section-head h2,
            .category-section-head h2 {
                font-size: 28px;
            }

            .section-space,
            .section-space-sm {
                padding: 64px 0;
            }

            .clip-body,
            .dir-info {
                padding: 22px 18px;
            }

            .clip-media img {
                height: 230px;
            }

            .dir-card {
                height: 280px;
            }

            .faq-layout {
                grid-template-columns: 1fr;
                gap: 26px;
            }

            .faq-guide {
                position: static;
            }

            .cta-buttons .btn {
                width: 100%;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
        }

        @media screen and (max-width: 520px) {
            .header-bar {
                padding: 0 14px;
                gap: 8px;
            }

            .brand-name strong {
                font-size: 15px;
            }

            .brand-name small {
                font-size: 10px;
            }

            .header-btn {
                display: none;
            }

            .brand-mark {
                width: 40px;
                height: 40px;
            }

            .category-hero {
                padding-top: 112px;
            }

            .hero-copy h1 {
                font-size: 29px;
            }

            .spec-list {
                align-items: flex-start;
                flex-direction: column;
                justify-content: center;
            }

            .section-head h2,
            .category-section-head h2,
            .faq-guide h2 {
                font-size: 25px;
            }

            .faq-a-inner,
            .faq-q {
                font-size: 15px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 26px;
            }

            .reason-card {
                padding: 24px 20px;
            }

            .clip-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media screen and (min-width: 901px) and (max-width: 1024px) {
            .nav-link {
                padding: 0 12px;
            }

            .brand-name small {
                display: none;
            }
        }

/* roulang page: category3 */
:root {
            --brand-primary: #1f6fb5;
            --brand-deep: #103a5c;
            --accent: #e85d3f;
            --bg-page: #f6f9fc;
            --bg-soft: #eaf3fb;
            --bg-card: #ffffff;
            --text-main: #172033;
            --text-secondary: #475569;
            --text-muted: #8296ab;
            --border-light: rgba(31, 111, 181, .12);
            --card-radius: 22px;
            --shadow-card: 0 2px 4px rgba(16, 35, 65, .05), 0 18px 36px rgba(16, 35, 65, .08);
            --shadow-hover: 0 6px 16px rgba(16, 35, 65, .09), 0 24px 48px rgba(16, 35, 65, .12);
            --nav-height: 76px;
            --section-space: 96px;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            padding: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
            background: var(--bg-page);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        body.nav-lock { overflow: hidden; }
        img { max-width: 100%; display: block; }
        a { color: var(--brand-primary); text-decoration: none; transition: color .2s ease; }
        a:hover { color: #124f83; }
        button { font-family: inherit; cursor: pointer; }
        p { margin-bottom: 1rem; }
        ul { margin: 0; padding: 0; list-style: none; }

        .grid-container { max-width: 1240px; }
        .section { padding: var(--section-space) 0; }
        .section.bg-white { background: #ffffff; }
        .section.bg-soft { background: var(--bg-soft); }
        .section.bg-deep { background: var(--brand-deep); }
        .section-space--sm { --section-space: 72px; }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: .08em;
            color: var(--brand-primary);
            margin-bottom: 12px;
        }
        .section-eyebrow::before {
            content: "";
            width: 22px;
            height: 3px;
            border-radius: 4px;
            background: var(--accent);
        }
        .section-title {
            font-size: 34px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--text-main);
            margin: 0 0 14px;
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 760px;
            margin-bottom: 32px;
        }
        .section-head { margin-bottom: 44px; }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            height: 50px;
            padding: 0 26px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 700;
            line-height: 1;
            border: 1px solid transparent;
            transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
            will-change: transform;
            white-space: nowrap;
            text-align: center;
        }
        .btn-primary {
            background: var(--brand-primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(31, 111, 181, .24);
        }
        .btn-primary:hover {
            background: #17598f;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 26px rgba(31, 111, 181, .3);
        }
        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, .65);
            color: #fff;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .12);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 10px 24px rgba(232, 93, 63, .28);
        }
        .btn-accent:hover {
            background: #c9462d;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn:active { transform: scale(.97); }

        /* ---------- 导航 ---------- */
        .site-header {
            position: fixed;
            top: 0; left: 0; right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .58);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            backdrop-filter: blur(18px) saturate(180%);
            border-bottom: 1px solid rgba(255, 255, 255, .6);
            transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
        }
        .site-header.is-scrolled {
            background: rgba(255, 255, 255, .94);
            border-bottom-color: rgba(15, 50, 90, .08);
            box-shadow: 0 12px 32px rgba(16, 35, 65, .08);
        }
        .header-bar {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 28px;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            gap: 20px;
            position: relative;
        }
        .brand-lockup {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .brand-mark {
            width: 44px;
            height: 44px;
            border-radius: 15px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #ffffff;
            border: 1px solid var(--border-light);
            color: var(--brand-primary);
            font-size: 20px;
            box-shadow: 0 6px 16px rgba(31, 111, 181, .16);
        }
        .brand-name { display: flex; flex-direction: column; line-height: 1.15; }
        .brand-name strong { font-size: 18px; font-weight: 900; color: var(--text-main); letter-spacing: .01em; }
        .brand-name small { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 2px;
            margin: 0 auto;
        }
        .nav-link {
            position: relative;
            padding: 10px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1;
        }
        .nav-link:hover {
            color: var(--brand-primary);
            background: rgba(31, 111, 181, .07);
        }
        .nav-link.active {
            background: rgba(31, 111, 181, .12);
            color: var(--brand-primary);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 1px;
            transform: translateX(-50%);
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--brand-primary);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .icon-btn {
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, .76);
            border: 1px solid rgba(15, 50, 90, .1);
            color: var(--text-main);
            font-size: 16px;
            transition: all .2s ease;
        }
        .icon-btn:hover {
            background: #fff;
            color: var(--brand-primary);
            box-shadow: 0 6px 16px rgba(16, 35, 65, .1);
        }
        .btn-small { height: 42px; padding: 0 20px; font-size: 14px; }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            padding: 10px;
            border: 1px solid rgba(15, 50, 90, .1);
            border-radius: 12px;
            background: rgba(255, 255, 255, .8);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }
        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            border-radius: 2px;
            background: var(--text-main);
            transition: transform .3s ease, opacity .3s ease;
        }
        .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
        .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

        .header-search-panel {
            position: absolute;
            top: calc(100% + 8px);
            right: 0;
            width: 420px;
            max-width: calc(100vw - 40px);
            background: #fff;
            border-radius: 18px;
            box-shadow: var(--shadow-hover);
            padding: 12px;
            border: 1px solid var(--border-light);
            opacity: 0;
            visibility: hidden;
            transform: translateY(-6px);
            transition: all .25s ease;
            z-index: 20;
        }
        .header-search-panel.is-open {
            opacity: 1;
            visibility: visible;
            transform: none;
        }
        .search-form {
            display: flex;
            gap: 8px;
            background: var(--bg-page);
            border: 1px solid rgba(31, 111, 181, .2);
            border-radius: 14px;
            padding: 4px 4px 4px 16px;
            transition: border .2s ease, box-shadow .2s ease;
        }
        .search-form:focus-within {
            border-color: var(--brand-primary);
            box-shadow: 0 0 0 3px rgba(31, 111, 181, .14);
        }
        .search-form input {
            flex: 1;
            min-width: 0;
            border: 0;
            background: transparent;
            outline: none;
            font-size: 15px;
            height: 42px;
            color: var(--text-main);
        }
        .search-form button {
            width: 44px;
            height: 44px;
            border: 0;
            border-radius: 11px;
            background: var(--brand-primary);
            color: #fff;
            font-size: 15px;
            flex-shrink: 0;
            transition: background .2s ease;
        }
        .search-form button:hover { background: #155485; }

        /* ---------- 分类页 Hero ---------- */
        .category-hero {
            position: relative;
            background: linear-gradient(100deg, rgba(9, 35, 58, .94) 0%, rgba(20, 74, 112, .78) 52%, rgba(25, 98, 132, .5) 100%), url('/assets/images/backpic/back-3.webp') center top / cover no-repeat;
            padding: 160px 0 72px;
            overflow: hidden;
            color: #fff;
        }
        .category-hero::after {
            content: "";
            position: absolute;
            left: 0; right: 0; bottom: 0;
            height: 120px;
            background: linear-gradient(180deg, rgba(246, 249, 252, 0) 0%, rgba(246, 249, 252, 1) 100%);
            pointer-events: none;
        }
        .category-hero .grid-container { position: relative; z-index: 3; }
        .hero-crumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: rgba(255, 255, 255, .78);
            margin-bottom: 20px;
        }
        .hero-crumb a { color: rgba(255, 255, 255, .9); }
        .hero-crumb a:hover { color: #fff; }
        .hero-crumb i { font-size: 11px; opacity: .55; }
        .hero-eyebrow {
            display: inline-flex;
            gap: 8px;
            align-items: center;
            font-size: 14px;
            font-weight: 700;
            color: #d9eafb;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            padding: 7px 14px;
            border-radius: 999px;
            margin-bottom: 18px;
        }
        .category-hero h1 {
            font-size: 48px;
            line-height: 1.25;
            font-weight: 900;
            color: #fff;
            margin: 0 0 16px;
            max-width: 740px;
        }
        .hero-lead {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(238, 248, 255, .88);
            max-width: 660px;
            margin-bottom: 26px;
        }
        .hero-cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 32px; }

        .hero-stat-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, auto));
            gap: 28px;
            max-width: 620px;
        }
        .hero-stat span { display: block; font-size: 13px; color: rgba(217, 234, 251, .82); }
        .hero-stat strong {
            display: block;
            font-size: 28px;
            font-weight: 900;
            color: #fff;
            line-height: 1.3;
        }

        /* ---------- 主题锚点 ---------- */
        .topic-anchor-bar { border-bottom: 1px solid rgba(15, 50, 90, .07); background: #fff; padding: 0; position: relative; z-index: 5; }
        .topic-anchor-bar ul {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            padding: 16px 0;
            align-items: center;
        }
        .topic-anchor-bar ul li a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 16px;
            border-radius: 999px;
            background: var(--bg-soft);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 600;
            transition: all .2s ease;
        }
        .topic-anchor-bar ul li a:hover {
            background: rgba(31, 111, 181, .1);
            color: var(--brand-primary);
        }

        /* ---------- 课堂主题 ---------- */
        .topic-main-grid { align-items: start; }
        .topic-card {
            background: #fff;
            border: 1px solid rgba(15, 50, 90, .06);
            border-radius: var(--card-radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            height: calc(100% - 24px);
            margin-bottom: 24px;
            transition: transform .24s ease, box-shadow .24s ease;
        }
        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(31, 111, 181, .14);
        }
        .topic-media { position: relative; overflow: hidden; aspect-ratio: 13 / 7; background: var(--bg-soft); }
        .topic-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
        .topic-card:hover .topic-media img { transform: scale(1.035); }
        .topic-media .badge {
            position: absolute;
            left: 14px; top: 14px;
        }
        .topic-info { padding: 22px 24px 24px; }
        .topic-info h3 { font-size: 19px; font-weight: 800; margin: 0 0 10px; line-height: 1.45; }
        .topic-info p { color: var(--text-secondary); font-size: 14.5px; line-height: 1.8; margin-bottom: 16px; }
        .topic-points {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            margin-bottom: 18px;
        }
        .topic-points li {
            position: relative;
            padding-left: 16px;
            color: var(--text-secondary);
            font-size: 13.5px;
        }
        .topic-points li::before {
            content: "";
            position: absolute;
            left: 0; top: 8px;
            width: 6px; height: 6px;
            border-radius: 50%;
            background: var(--brand-primary);
        }
        .topic-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            font-size: 14px;
            color: var(--brand-primary);
        }
        .topic-more i { transition: transform .2s ease; }
        .topic-more:hover i { transform: translateX(4px); }

        .context-card {
            position: sticky;
            top: 96px;
            background: #fff;
            border: 1px solid rgba(15, 50, 90, .06);
            border-radius: 24px;
            padding: 30px;
            box-shadow: var(--shadow-card);
            margin-bottom: 24px;
        }
        .context-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 13px;
            border-radius: 999px;
            background: rgba(31, 111, 181, .1);
            color: var(--brand-primary);
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .context-card h3 { font-size: 22px; font-weight: 800; margin: 0 0 10px; }
        .context-card > p { color: var(--text-secondary); font-size: 14.5px; line-height: 1.8; margin-bottom: 24px; }
        .context-list { border-top: 1px solid rgba(15, 50, 90, .07); }
        .context-list li {
            padding: 16px 0;
            border-bottom: 1px solid rgba(15, 50, 90, .07);
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .context-list .ctx-num {
            flex-shrink: 0;
            width: 30px; height: 30px;
            border-radius: 10px;
            background: var(--bg-soft);
            color: var(--brand-primary);
            font-weight: 800;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            margin-top: 2px;
        }
        .context-list h4 { font-size: 15.5px; font-weight: 800; margin: 0 0 3px; }
        .context-list p { margin: 0; color: var(--text-muted); font-size: 13.5px; line-height: 1.6; }

        /* ---------- 亮点模块 ---------- */
        #hot { scroll-margin-top: 96px; }
        .feature-section { background: linear-gradient(180deg, var(--bg-page) 0%, #ffffff 100%); }
        .feature-grid .cell { margin-bottom: 24px; }
        .feature-card {
            background: #fff;
            border-radius: var(--card-radius);
            border: 1px solid rgba(15, 50, 90, .07);
            padding: 32px 28px;
            height: 100%;
            margin-bottom: 0;
            box-shadow: var(--shadow-card);
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-soft);
            color: var(--brand-primary);
            font-size: 22px;
            margin-bottom: 20px;
        }
        .feature-card h3 { margin: 0 0 12px; font-size: 20px; font-weight: 800; line-height: 1.4; }
        .feature-card p { margin: 0; color: var(--text-secondary); line-height: 1.85; font-size: 14.5px; }

        /* ---------- 学习路径 ---------- */
        .path-section { background: var(--bg-soft); }
        .path-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 28px 24px;
            height: calc(100% - 24px);
            position: relative;
            box-shadow: 0 8px 24px rgba(16, 35, 65, .05);
            margin-bottom: 24px;
        }
        .path-step {
            width: 36px;
            height: 36px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 900;
            background: var(--brand-primary);
            color: #fff;
            margin-bottom: 18px;
        }
        .path-card h3 { font-size: 18px; font-weight: 800; margin: 0 0 10px; }
        .path-card p { font-size: 14.5px; color: var(--text-secondary); line-height: 1.8; margin: 0; }
        .path-card .step-line::before {
            content: "";
            position: absolute;
            top: 34px;
            left: 61px;
            width: 60%;
            height: 2px;
            background: transparent;
        }
        .path-arrow { position: absolute; right: -20px; top: 72px; color: var(--brand-primary); z-index: 3; font-size: 20px; }

        /* ---------- 细分主题 ---------- */
        .deeper-case {
            background: #fff;
            border: 1px solid rgba(15, 50, 90, .06);
            border-radius: var(--card-radius);
            overflow: hidden;
            height: calc(100% - 24px);
            margin-bottom: 24px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            transition: transform .22s ease, box-shadow .22s ease;
        }
        .deeper-case:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .deeper-img { height: 132px; overflow: hidden; position: relative; }
        .deeper-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
        .deeper-case:hover .deeper-img img { transform: scale(1.05); }
        .deeper-img::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(16, 35, 65, 0) 40%, rgba(16, 35, 65, .2)); }
        .deeper-body { padding: 22px 22px 24px; flex: 1; }
        .deeper-body h3 { font-size: 18px; margin: 0 0 10px; font-weight: 800; }
        .deeper-body p { color: var(--text-secondary); font-size: 14px; line-height: 1.8; margin: 0; }

        /* ---------- FAQ ---------- */
        .faq-wrap .cell { margin-bottom: 24px; }
        .faq-panel {
            background: #fff;
            border: 1px solid rgba(15, 50, 90, .07);
            border-radius: 20px;
            overflow: hidden;
            margin-bottom: 14px;
        }
        .faq-title {
            padding: 20px 22px;
            font-weight: 800;
            font-size: 16px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 14px;
            justify-content: space-between;
            cursor: pointer;
            transition: background .2s ease, color .2s ease;
        }
        .faq-title:hover { color: var(--brand-primary); background: rgba(31, 111, 181, .03); }
        .faq-title .faq-count {
            color: var(--brand-primary);
            font-size: 13px;
            font-weight: 800;
            background: var(--bg-soft);
            width: 28px;
            height: 28px;
            border-radius: 9px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .faq-title .faq-toggle {
            width: 28px; height: 28px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            color: var(--brand-primary);
            background: rgba(31, 111, 181, .1);
            font-size: 14px;
            transition: transform .25s ease;
        }
        .accordion-item.is-active > .accordion-title .faq-toggle { transform: rotate(45deg); }
        .faq-answer { padding: 0 22px 22px; color: var(--text-secondary); line-height: 1.9; font-size: 15px; }
        .faq-answer > :last-child { margin-bottom: 0; }

        /* ---------- CTA ---------- */
        .cta-band {
            position: relative;
            padding: 76px 0;
            background: linear-gradient(120deg, rgba(8, 33, 52, .93) 0%, rgba(14, 58, 88, .84) 55%, rgba(28, 82, 104, .78) 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            color: #fff;
        }
        .cta-inner { max-width: 760px; }
        .cta-inner h2 { font-size: 34px; font-weight: 900; line-height: 1.3; margin: 0 0 14px; }
        .cta-inner p { color: rgba(233, 244, 255, .88); font-size: 16px; line-height: 1.9; margin-bottom: 26px; }
        .cta-btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

        /* ---------- 页脚 ---------- */
        .site-footer { background: #eef4f9; padding: 64px 0 28px; border-top: 1px solid rgba(15, 50, 90, .06); }
        .footer-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr .8fr; gap: 40px; }
        .footer-grid .grid-col {}
        .footer-des { max-width: 300px; }
        .footer-des .brand-lockup { margin-bottom: 14px; }
        .footer-des p { color: var(--text-secondary); font-size: 14.5px; line-height: 1.9; margin: 0; }
        .footer-head { color: var(--text-main); font-size: 15px; font-weight: 800; margin-bottom: 14px; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links li a { color: var(--text-secondary); font-size: 14px; transition: all .2s ease; }
        .footer-links li a:hover { color: var(--brand-primary); padding-left: 4px; }
        .footer-bottom {
            margin-top: 48px;
            padding-top: 22px;
            border-top: 1px solid rgba(15, 50, 90, .08);
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom span { line-height: 1.8; }

        /* ---------- 移动端 ---------- */
        @media (max-width: 1024px) {
            .header-bar { gap: 14px; padding: 0 20px; }
            .main-nav { margin-left: auto; }
            .nav-link { padding: 9px 12px; font-size: 14px; }
            .brand-name small { display: none; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }

        @media (max-width: 820px) {
            :root { --section-space: 64px; }
            .header-actions .header-btn { display: none; }
            .nav-toggle { display: flex; }
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0; right: 0;
                background: rgba(255, 255, 255, .97);
                -webkit-backdrop-filter: blur(18px);
                backdrop-filter: blur(18px);
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                margin: 0;
                padding: 18px 24px 26px;
                border-bottom: 1px solid rgba(15, 50, 90, .08);
                box-shadow: 0 24px 60px rgba(16, 35, 65, .12);
                transform: translateY(-16px);
                opacity: 0;
                visibility: hidden;
                transition: all .3s ease;
                max-height: calc(100vh - var(--nav-height));
                overflow-y: auto;
                z-index: 95;
            }
            .main-nav.is-open {
                transform: none;
                opacity: 1;
                visibility: visible;
            }
            .nav-link { display: block; padding: 13px 16px; border-radius: 14px; font-size: 16px; }
            .nav-link.active { background: rgba(31, 111, 181, .12); }
            .nav-link.active::after { display: none; }
            .category-hero { padding-top: 140px; }
            .category-hero h1 { font-size: 36px; }
            .hero-stat-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
            .hero-stat strong { font-size: 24px; }
            .section-title { font-size: 28px; }
            .faq-side { margin-bottom: 30px; }
        }

        @media (max-width: 520px) {
            body { font-size: 15px; }
            .header-bar { padding: 0 16px; }
            .brand-mark { width: 38px; height: 38px; font-size: 17px; }
            .brand-name strong { font-size: 16px; }
            .header-search-panel { width: calc(100vw - 32px); max-width: none; right: 16px; }
            .category-hero { padding: 124px 0 52px; }
            .category-hero h1 { font-size: 30px; }
            .hero-eyebrow { font-size: 12px; }
            .hero-lead { font-size: 15.5px; }
            .hero-cta-row .btn { width: 100%; }
            .hero-stat-grid { grid-template-columns: 1fr 1fr; }
            .hero-stat:nth-child(3) { grid-column: span 2; }
            .hero-stat strong { font-size: 22px; }
            .section-title { font-size: 25px; }
            .section-sub { font-size: 15px; }
            .topic-card { border-radius: 18px; }
            .topic-info { padding: 20px 18px 22px; }
            .context-card { padding: 22px 18px; }
            .path-card, .feature-card, .deeper-case { margin-bottom: 16px; }
            .cta-inner h2 { font-size: 26px; }
            .cta-btn-row .btn { width: 100%; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; }
        }

/* roulang page: category4 */
:root {
            --brand-primary: #1f6fb5;
            --brand-dark: #114166;
            --brand-light: #eaf3fb;
            --brand-pale: #f4f8fc;
            --accent: #ec6b4a;
            --accent-light: #fff0eb;
            --bg-light: #f6f9fc;
            --text-main: #172033;
            --text-sub: #475569;
            --text-weak: #8296ab;
            --text-white: #f7fbff;
            --border-light: #e4ecf4;
            --card-radius: 22px;
            --inner-radius: 14px;
            --shadow-card: 0 2px 4px rgba(16, 35, 65, .05), 0 14px 30px rgba(16, 35, 65, .06);
            --shadow-hover: 0 6px 16px rgba(16, 35, 65, .08), 0 20px 40px rgba(16, 35, 65, .10);
            --nav-height: 72px;
            --space-section: clamp(56px, 8vw, 96px);
            --transition-base: all .3s cubic-bezier(.4, 0, .2, 1);
        }

        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
            color: var(--text-main);
            line-height: 1.75;
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: var(--transition-base);
        }

        ul {
            list-style: none;
        }

        .grid-container {
            max-width: 1320px;
        }

        .section-pad {
            padding: var(--space-section) 0;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--brand-light);
            color: var(--brand-primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            letter-spacing: .01em;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 15px;
            line-height: 1;
            padding: 16px 28px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: var(--transition-base);
            text-align: center;
            min-height: 48px;
        }
        .btn i {
            font-size: .95em;
        }

        .btn-primary {
            background: var(--brand-primary);
            color: var(--text-white);
        }
        .btn-primary:hover {
            background: var(--brand-dark);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(31, 111, 181, .25);
        }
        .btn-primary:active {
            transform: scale(.98);
        }

        .btn-outline {
            background: transparent;
            border-color: rgba(31, 111, 181, .5);
            color: var(--brand-primary);
        }
        .btn-outline:hover {
            background: var(--brand-light);
            border-color: var(--brand-primary);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: scale(.98);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: #d85634;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(236, 107, 74, .25);
        }
        .btn-accent:active {
            transform: scale(.98);
        }

        .btn-small {
            padding: 11px 22px;
            font-size: 14px;
            min-height: 42px;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-head .eyebrow {
            font-size: 13px;
            font-weight: 700;
            color: var(--brand-primary);
            letter-spacing: .04em;
            margin-bottom: 12px;
            display: block;
            text-transform: uppercase;
        }
        .section-head h2 {
            font-size: clamp(26px, 4vw, 34px);
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 14px;
        }
        .section-head p {
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.8;
        }

        .eyebrow {
            font-size: 13px;
            font-weight: 700;
            color: var(--brand-primary);
            letter-spacing: .04em;
            text-transform: uppercase;
        }

        /* Header Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, .55);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-bottom: 1px solid rgba(255, 255, 255, .5);
            transition: all .4s ease;
        }

        .site-header.is-scrolled {
            background: rgba(255, 255, 255, .92);
            border-bottom: 1px solid rgba(15, 50, 90, .08);
            box-shadow: 0 4px 30px rgba(16, 35, 65, .06);
        }

        .header-bar {
            width: 100%;
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 32px;
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .brand-lockup {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .brand-mark {
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: var(--brand-primary);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 4px 12px rgba(31, 111, 181, .2);
        }
        .brand-name {
            display: flex;
            flex-direction: column;
            line-height: 1.3;
        }
        .brand-name strong {
            font-weight: 800;
            font-size: 17px;
            color: var(--text-main);
            letter-spacing: .01em;
        }
        .brand-name small {
            font-size: 11px;
            color: var(--text-weak);
            font-weight: 500;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            min-height: 44px;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-sub);
            border-radius: 999px;
            transition: var(--transition-base);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            background: var(--brand-light);
            color: var(--brand-primary);
        }
        .nav-link.active {
            background: var(--brand-primary);
            color: var(--text-white);
            box-shadow: 0 6px 16px rgba(31, 111, 181, .18);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .icon-btn {
            width: 44px;
            height: 44px;
            border-radius: 999px;
            border: none;
            background: rgba(31, 111, 181, .08);
            color: var(--brand-primary);
            font-size: 17px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition-base);
        }
        .icon-btn:hover {
            background: rgba(31, 111, 181, .18);
        }
        .icon-btn:active {
            transform: scale(.95);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            background: transparent;
            border: none;
            cursor: pointer;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: 12px;
        }
        .nav-toggle span {
            width: 22px;
            height: 2.5px;
            background: var(--text-main);
            border-radius: 4px;
            transition: all .3s ease;
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .header-search-panel {
            position: absolute;
            top: calc(var(--nav-height) + 8px);
            left: 50%;
            transform: translateX(-50%) translateY(-10px);
            background: #fff;
            width: 560px;
            max-width: calc(100vw - 32px);
            border-radius: 18px;
            padding: 12px;
            box-shadow: 0 20px 50px rgba(16, 35, 65, .14);
            opacity: 0;
            visibility: hidden;
            transition: all .3s ease;
            border: 1px solid var(--border-light);
            z-index: 1001;
        }
        .header-search-panel.open {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }
        .search-form {
            display: flex;
            gap: 8px;
        }
        .search-form input {
            flex: 1;
            min-height: 44px;
            border-radius: 12px;
            border: 1px solid var(--border-light);
            padding: 0 14px;
            font-size: 15px;
            font-family: inherit;
            outline: none;
            background: var(--bg-light);
            transition: var(--transition-base);
        }
        .search-form input:focus {
            border-color: var(--brand-primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(31, 111, 181, .12);
        }
        .search-form button {
            width: 48px;
            border-radius: 12px;
            border: none;
            background: var(--brand-primary);
            color: #fff;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition-base);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .search-form button:hover {
            background: var(--brand-dark);
        }

        /* Page Hero */
        .page-hero {
            position: relative;
            padding: calc(var(--nav-height) + 48px) 0 64px;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center 30%;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(244, 248, 252, .92) 30%, rgba(234, 243, 251, .82) 100%);
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: -80px;
            right: -40px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(31, 111, 181, .12) 0%, transparent 70%);
            border-radius: 50%;
        }
        .page-hero .grid-container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 780px;
        }
        .hero-content .hero-crumb {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .hero-content .hero-crumb a {
            color: var(--text-weak);
        }
        .hero-content .hero-crumb a:hover {
            color: var(--brand-primary);
        }
        .hero-content h1 {
            font-size: clamp(30px, 5vw, 50px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-main);
            margin-bottom: 18px;
        }
        .hero-content h1 .text-accent {
            color: var(--brand-primary);
        }
        .hero-content .lead {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-sub);
            margin-bottom: 24px;
            max-width: 680px;
        }
        .hero-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* Stats Strip */
        .stats-strip {
            padding: 0 0 8px;
            background: var(--bg-light);
        }
        .stats-strip .grid-container {
            background: #fff;
            border-radius: calc(var(--card-radius) + 4px);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            position: relative;
            z-index: 5;
            margin-top: -8px;
        }
        .stats-strip .cell {
            padding: 0 20px;
            text-align: left;
            border-right: 1px solid var(--border-light);
            margin: 8px 0;
        }
        .stats-strip .cell:last-child {
            border-right: none;
        }
        .stats-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .stats-item i {
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: var(--brand-light);
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .stats-item .stat-num {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.2;
        }
        .stats-item .stat-num span {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-weak);
            margin-left: 2px;
        }
        .stats-item .stat-label {
            font-size: 13px;
            color: var(--text-sub);
            font-weight: 500;
        }

        /* Review Cards */
        .review-section {
            background: #fff;
            padding: var(--space-section) 0;
        }
        .review-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }
        .review-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--card-radius);
            padding: 28px;
            transition: var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .review-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(31, 111, 181, .2);
        }
        .review-card .user-head {
            display: flex;
            align-items: center;
            margin-bottom: 14px;
        }
        .review-card .avatar {
            width: 44px;
            height: 44px;
            border-radius: 999px;
            background: var(--brand-light);
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            font-weight: 700;
            margin-right: 12px;
            flex-shrink: 0;
        }
        .review-card .user-name {
            font-weight: 700;
            font-size: 15px;
            color: var(--text-main);
        }
        .review-card .user-meta {
            font-size: 13px;
            color: var(--text-weak);
        }
        .stars {
            color: #f5a623;
            font-size: 13px;
            letter-spacing: 1px;
        }
        .review-card p {
            color: var(--text-sub);
            font-size: 14.5px;
            line-height: 1.85;
            flex: 1;
        }
        .review-card .tag-list {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 14px;
        }
        .tag-item {
            background: var(--bg-light);
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 999px;
            color: var(--text-sub);
            font-weight: 500;
        }
        .review-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border-light);
            margin-top: 16px;
            padding-top: 14px;
        }
        .helpful-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 12px;
            color: var(--text-weak);
            cursor: pointer;
            transition: var(--transition-base);
            font-family: inherit;
        }
        .helpful-btn:hover {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
            background: var(--brand-light);
        }
        .helpful-btn:active {
            transform: scale(.96);
        }
        .review-time {
            font-size: 12px;
            color: var(--text-weak);
        }

        /* Score Section */
        .score-section {
            background: var(--brand-pale);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: var(--space-section) 0;
        }
        .score-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }
        .score-box {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 32px;
            box-shadow: var(--shadow-card);
            text-align: center;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }
        .score-box .score-value {
            font-size: 48px;
            line-height: 1.2;
            font-weight: 800;
            color: var(--brand-primary);
            margin-bottom: 4px;
        }
        .score-box .score-label {
            font-size: 15px;
            color: var(--text-sub);
            font-weight: 600;
            margin-bottom: 8px;
        }
        .score-box .progress-wrap {
            width: 100%;
            background: var(--bg-light);
            border-radius: 999px;
            height: 8px;
            overflow: hidden;
            margin-top: 16px;
        }
        .score-box .progress-fill {
            height: 100%;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--brand-primary), #4a9edc);
        }
        .score-box .pr-text {
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 12px;
        }

        /* Accordion FAQ */
        .faq-section {
            background: var(--bg-light);
        }
        .faq-side {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 32px;
            box-shadow: var(--shadow-card);
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .faq-side h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .faq-side p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .faq-side .btn {
            width: 100%;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 18px;
            padding: 22px 24px;
            transition: var(--transition-base);
            cursor: pointer;
        }
        .faq-item.active {
            background: var(--brand-pale);
            border-color: rgba(31, 111, 181, .25);
        }
        .faq-q {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 16px;
            color: var(--text-main);
            line-height: 1.4;
        }
        .faq-q .faq-icon {
            margin-left: auto;
            width: 28px;
            height: 28px;
            border-radius: 999px;
            background: var(--brand-light);
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: all .4s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--brand-primary);
            color: #fff;
        }
        .faq-a {
            max-height: 0;
            opacity: 0;
            overflow: hidden;
            transition: max-height .5s cubic-bezier(.4, 0, .2, 1), opacity .4s ease, margin-top .4s ease;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.9;
        }
        .faq-item.active .faq-a {
            max-height: 300px;
            opacity: 1;
            margin-top: 12px;
        }

        /* Selection cards / categories */
        .selection-section {
            background: #fff;
            padding: var(--space-section) 0;
        }
        .selection-grid-cards {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }
        .selection-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--card-radius);
            padding: 28px;
            display: flex;
            gap: 18px;
            transition: var(--transition-base);
            height: 100%;
        }
        .selection-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .selection-item .num {
            width: 40px;
            height: 40px;
            background: var(--brand-light);
            color: var(--brand-primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 17px;
            flex-shrink: 0;
        }
        .selection-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .selection-item p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 10px;
        }
        .selection-item a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
        }
        .selection-item a i {
            transition: transform .3s ease;
        }
        .selection-item a:hover i {
            transform: translateX(4px);
        }

        /* Bottom CTA */
        .bottom-cta {
            background: linear-gradient(135deg, rgba(2, 8, 18, .93), rgba(9, 26, 45, .96)), url('/assets/images/backpic/back-2.webp') center/cover;
            padding: var(--space-section) 0;
            color: var(--text-white);
            text-align: center;
        }
        .bottom-cta h2 {
            font-size: clamp(26px, 4vw, 36px);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .bottom-cta p {
            font-family: inherit;
        }
        .bottom-cta .cta-container .btn-primary {
            background: var(--accent);
            color: #fff;
            font-family: inherit;
        }
        .bottom-cta .cta-container .btn-primary:hover {
            background: #d85634;
        }
        .bottom-cta .cta-desc {
            color: rgba(247, 251, 255, .88);
            max-width: 560px;
            margin: 0 auto 36px;
        }
        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 18px;
        }
        .cta-note {
            font-size: 13px;
            color: rgba(247, 251, 255, .65);
        }

        /* Footer */
        .site-footer {
            background: #f0f5fa;
            border-top: 1px solid var(--border-light);
            padding-bottom: 30px;
        }
        .site-footer .grid-container {
            max-width: 1320px;
        }
        .footer-top {
            padding: 56px 0 44px;
            border-bottom: 1px solid rgba(15, 50, 90, .06);
        }
        .footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .footer-des,
        .footer-grid {
            display: flex;
        }
        .footer-grid>div {
            flex-basis: calc((100% - 120px) * 0.333);
            flex-grow: 1;
            gap: 20px;
            display: flex;
            flex-direction: column;
        }
        .footer-grid>div.footer-des {
            flex-basis: calc(100% - 120px);
            gap: 0;
            flex-direction: column;
        }
        .footer-des .brand-lockup {
            margin-bottom: 16px;
            justify-content: flex-start;
        }
        .footer-des p {
            color: var(--text-sub);
            line-height: 1.9;
            font-size: 14.5px;
        }
        .footer-head {
            font-weight: 700;
            font-size: 16px;
            color: var(--text-main);
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            display: inline-block;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.5;
            min-height: 24px;
        }
        .footer-links a:hover {
            color: var(--brand-primary);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
            padding-top: 24px;
            font-size: 13px;
            color: var(--text-weak);
            flex-wrap: wrap;
            font-family: inherit;
        }

        /* Responsive actions */
        .toast-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, .45);
            z-index: 1100;
            opacity: 0;
            visibility: hidden;
            transition: all .3s ease;
        }
        .toast-overlay .toast-box {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -60%);
            background: #fff;
            border-radius: 20px;
            padding: 32px;
            max-width: 400px;
            text-align: center;
            box-shadow: 0 30px 70px rgba(16, 35, 65, .2);
            transition: transform .4s ease;
        }
        .toast-overlay .toast-box i {
            font-size: 44px;
            color: var(--brand-primary);
            margin-bottom: 12px;
            display: inline-block;
        }
        .toast-overlay .toast-box .btn-row {
            display: flex;
            gap: 10px;
            justify-content: center;
            margin-top: 18px;
            flex-wrap: wrap;
        }
        .toast-overlay.open {
            opacity: 1;
            visibility: visible;
        }
        .toast-overlay.open .toast-box {
            transform: translate(-50%, -50%);
        }

        /* Animations */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fadeup {
            animation: fadeUp .6s cubic-bezier(.22, 1, .36, 1) both;
        }

        /* Reveal on scroll */
        .reveal {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity .8s cubic-bezier(.22, 1, .36, 1), transform .8s cubic-bezier(.22, 1, .36, 1);
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .reveal-delay-1 { transition-delay: .08s; }
        .reveal-delay-2 { transition-delay: .16s; }
        .reveal-delay-3 { transition-delay: .24s; }
        .reveal-delay-4 { transition-delay: .32s; }

        /* Responsive */
        @media (max-width: 1023.98px) {
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, .97);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                flex-direction: column;
                align-items: stretch;
                padding: 18px 22px 24px;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(16, 35, 65, .08);
                border-top: 1px solid var(--border-light);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-16px);
                transition: all .35s cubic-bezier(.4, 0, .2, 1);
                flex: none;
            }
            .main-nav.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }
            .main-nav .nav-link {
                min-height: 50px;
                border-radius: 14px;
                padding: 12px 16px;
                font-size: 17px;
                width: auto;
            }
            .header-actions {
                margin-left: auto;
            }
            .header-search-panel {
                width: calc(100vw - 32px);
                left: 16px;
                right: 16px;
                transform: none;
            }
            .header-search-panel.open {
                transform: none;
            }
        }

        @media (max-width: 767.98px) {
            .header-bar {
                padding: 0 18px;
                gap: 14px;
            }
            .brand-mark {
                width: 38px;
                height: 38px;
                border-radius: 12px;
                font-size: 17px;
            }
            .brand-name small {
                display: none;
            }
            .brand-name strong {
                font-size: 15px;
            }
            .nav-link {
                font-size: 14px;
                padding: 8px 13px;
            }
            .mobile-only-brand-empty {
                display: none;
            }
            .btn-small.btn-primary {
                padding: 10px 16px;
                font-size: 13px;
            }
            .btn i {
                font-size: .9em;
            }
            .page-hero {
                padding-top: calc(var(--nav-height) + 36px);
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-content {
                padding-top: 20px;
                max-width: 100%;
            }
            .headersmaller {
                display: none;
            }
            .stats-strip .cell {
                border-right: none;
                border-bottom: 1px solid var(--border-light);
                padding: 10px 0;
                margin: 0;
                text-align: left;
            }
            .stats-strip .cell:last-child {
                border-bottom: none;
            }
            .grid-margin-x:not(.collapse)>.cell {
                margin-bottom: 14px;
            }
            .section-head h2 {
                font-size: 24px;
                margin-bottom: 8px;
            }
            .section-head p {
                font-size: 14px;
                line-height: 1.65;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
            }
            .footer-grid {
                gap: 28px;
            }
            .footer-grid>div,
            .footer-grid>div.footer-des {
                flex-basis: 100%;
            }
            .faq-side {
                position: relative;
                top: auto;
                margin-bottom: 8px;
            }
            .faq-q {
                font-size: 15px;
            }
            .score-box {
                padding: 22px;
            }
            .score-box .score-value {
                font-size: 34px;
            }
            .cta-buttons .btn {
                width: 100%;
                padding: 18px 20px;
            }
            .toast-overlay .toast-box {
                width: calc(100% - 40px);
                max-width: 400px;
                padding: 24px 20px;
            }
            main .reveal {
                transform: translateY(20px);
            }
            .animate-fadeup {
                animation-duration: .5s;
            }
        }

        @media (max-width: 599.98px) {
            .icon-btn.search-only-widescreen {
                display: none;
            }
            .header-actions .icon-btn {
                width: 42px;
                height: 42px;
            }
            .hero-meta {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-meta .btn {
                width: 60%;
            }
        }

        @media (max-width: 420px) {
            .brand-name strong {
                font-size: 14px;
                font-family: inherit;
            }
            .header-bar {
                gap: 10px;
            }
            .brand-mark {
                width: 35px;
                height: 35px;
                font-size: 15px;
            }
        }

        @media (min-width: 1024px) {
            .nav-link {
                font-size: 15px;
            }
        }

        :focus-visible {
            outline: 2px solid var(--brand-primary);
            outline-offset: 3px;
            border-radius: 2px;
        }