/* roulang page: index */
:root {
    --primary: #2563eb;
    --primary-deep: #1d4ed8;
    --primary-soft: #eef4fb;
    --accent: #0d9488;
    --accent-soft: #ecfdf7;
    --ink: #0f172a;
    --ink-2: #64748b;
    --ink-3: #94a3b8;
    --line: #e2e8f0;
    --bg: #f8fafc;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow-card: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 12px rgba(15, 23, 42, .05);
    --shadow-hover: 0 4px 8px rgba(15, 23, 42, .06), 0 12px 24px rgba(15, 23, 42, .09);
    --shadow-cta: 0 2px 4px rgba(37, 99, 235, .3);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 110px;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
    background: #f8fafc;
    color: #0f172a;
    line-height: 1.75;
    font-feature-settings: "tnum";
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: color .2s ease;
}

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

input,
textarea {
    font-family: inherit;
    outline: none;
}

/* ============ NAV ============ */
.nav-top-row {
    height: 64px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 50;
}

.nav-second-row {
    height: 48px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 64px;
    z-index: 40;
}

.nav-tabs-wrap {
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    position: relative;
    white-space: nowrap;
}

.nav-tabs-wrap::-webkit-scrollbar {
    display: none;
}

.nav-tabs-fade {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 48px;
    pointer-events: none;
    background: linear-gradient(to right, transparent, #fff);
    border-radius: 0 8px 8px 0;
}

.nav-tab-pill {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--ink-2);
    transition: all .2s ease;
    white-space: nowrap;
}

.nav-tab-pill:hover {
    background: #f8fafc;
    color: #334155;
}

.nav-tab-pill.active {
    background: #eef4fb;
    color: var(--primary);
    font-weight: 600;
}

.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary) 60%, var(--accent) 110%);
    border-radius: 10px;
    color: #fff;
    font-weight: 800;
    font-size: 18px;
    letter-spacing: -0.02em;
    flex-shrink: 0;
}

.site-logo-text {
    font-size: 18px;
    font-weight: 700;
    color: #0f172a;
    letter-spacing: -0.01em;
    white-space: nowrap;
}

.search-box {
    display: flex;
    align-items: center;
    background: #fff;
    border: 1px solid #d7e2ec;
    border-radius: 8px;
    height: 38px;
    padding: 0 4px 0 12px;
    transition: all .2s ease;
    max-width: 320px;
    width: 100%;
}

.search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .1);
}

.search-box input {
    flex: 1;
    border: none;
    font-size: 14px;
    background: transparent;
    width: 100%;
    min-width: 0;
}

.search-box input::placeholder {
    color: #94a3b8;
}

.search-box input:focus {
    outline: none;
    box-shadow: none;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    border-radius: 8px;
    transition: all .2s ease;
    box-shadow: var(--shadow-cta);
}

.btn-primary:hover {
    background: var(--primary-deep);
    box-shadow: 0 4px 8px rgba(37, 99, 235, .35);
}

.btn-primary:active {
    transform: translateY(1px);
}

.btn-primary:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .2);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    color: var(--primary);
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid #d7e2ec;
    transition: all .2s ease;
}

.btn-secondary:hover {
    background: var(--primary-soft);
    border-color: #c7d7e8;
}

.btn-secondary:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .15);
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-weight: 600;
    transition: all .2s ease;
    border-radius: 8px;
}

.btn-ghost:hover {
    color: var(--primary-deep);
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* ============ HERO ============ */
.hero-section {
    background: #f8fafc;
    background-image: linear-gradient(135deg, #f8fafc 0%, #eef4fb 100%);
    padding: 72px 0 56px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 380px;
    height: 380px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37, 99, 235, .08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-title {
    font-size: 42px;
    line-height: 1.25;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--ink);
}

.hero-title .highlight {
    color: var(--primary);
    background: rgba(37, 99, 235, .08);
    border-radius: 6px;
    padding: 2px 10px;
    display: inline-block;
}

.hero-sub {
    font-size: 16px;
    color: var(--ink-2);
    line-height: 1.8;
    max-width: 520px;
}

.stats-row {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: #fff;
    padding: 20px 0;
}

.stat-item {
    text-align: center;
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 20%;
    bottom: 20%;
    width: 1px;
    background: var(--line);
}

.stat-number {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.3;
    font-feature-settings: "tnum";
}

.stat-label {
    font-size: 13px;
    color: var(--ink-2);
}

/* ============ SECTION ============ */
.section {
    padding: 72px 0;
}

.section-tight {
    padding: 56px 0;
}

.section-title-wrap {
    margin-bottom: 40px;
}

.section-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: -0.01em;
}

.section-desc {
    font-size: 14px;
    color: var(--ink-2);
    margin-top: 8px;
    max-width: 560px;
}

/* ============ CARDS ============ */
.feature-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 28px 24px;
    transition: all .2s ease;
    box-shadow: var(--shadow-card);
    height: 100%;
}

.feature-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
    border-color: #d4e0ee;
}

.feature-card .icon-wrap {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-soft);
    color: var(--primary);
    margin-bottom: 16px;
}

.feature-card .icon-wrap.teal {
    background: var(--accent-soft);
    color: var(--accent);
}

.feature-card h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 14px;
    color: var(--ink-2);
    line-height: 1.7;
}

/* ============ SCENE ============ */
.scene-section {
    background: #f0f6ff;
    padding: 72px 0;
}

.scene-img-card {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    background: #fff;
    position: relative;
}

.scene-img-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.scene-img-card .img-caption {
    padding: 12px 16px;
    font-size: 13px;
    color: var(--ink-2);
    background: #fff;
}

.scene-point-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.scene-point-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0;
    font-size: 14px;
    color: var(--ink);
    line-height: 1.6;
}

.scene-point-list li .point-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-soft);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    margin-top: 3px;
}

/* ============ CMS LIST ============ */
.cms-card {
    display: flex;
    gap: 16px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 16px;
    transition: all .2s ease;
    box-shadow: var(--shadow-card);
}

.cms-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
    border-color: #d4e0ee;
}

.cms-thumb {
    width: 120px;
    height: 84px;
    border-radius: 6px;
    object-fit: cover;
    flex-shrink: 0;
    background: #f1f5f9;
}

.cms-thumb-placeholder {
    width: 120px;
    height: 84px;
    border-radius: 6px;
    background: #f1f5f9;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #cbd5e1;
}

.cms-badge {
    display: inline-block;
    background: #ecfdf7;
    color: #0f766e;
    font-size: 12px;
    font-weight: 500;
    padding: 2px 10px;
    border-radius: 999px;
    line-height: 1.5;
}

.cms-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color .2s ease;
}

.cms-card:hover .cms-title {
    color: var(--primary);
}

.cms-excerpt {
    font-size: 13px;
    color: var(--ink-2);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-top: 4px;
}

.cms-empty {
    border: 2px dashed #d7e2ec;
    background: #f8fafc;
    border-radius: var(--radius);
    padding: 48px 24px;
    text-align: center;
    color: var(--ink-2);
    font-size: 14px;
}

/* ============ CASE ============ */
.case-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    transition: all .2s ease;
    box-shadow: var(--shadow-card);
}

.case-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-hover);
}

.case-logo {
    font-size: 18px;
    font-weight: 700;
    color: #94a3b8;
    letter-spacing: .02em;
    line-height: 1.4;
}

.case-desc {
    font-size: 13px;
    color: var(--ink-2);
    margin-top: 8px;
}

/* ============ PRICE ============ */
.price-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: all .2s ease;
    position: relative;
}

.price-card:hover {
    box-shadow: var(--shadow-hover);
    border-color: #d4e0ee;
}

.price-card.recommended {
    border: 2px solid var(--primary);
    box-shadow: 0 8px 24px rgba(37, 99, 235, .12);
}

.rec-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 3px 14px;
    border-radius: 999px;
    white-space: nowrap;
}

.price-card .price {
    font-size: 36px;
    font-weight: 800;
    color: var(--ink);
    line-height: 1.2;
    font-feature-settings: "tnum";
}

.price-card .price-unit {
    font-size: 14px;
    font-weight: 400;
    color: var(--ink-2);
    margin-left: 4px;
}

.price-list {
    list-style: none;
    padding: 0;
    margin: 20px 0 24px;
}

.price-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--ink);
    padding: 6px 0;
}

.price-list li .check {
    color: var(--accent);
    font-weight: 700;
    flex-shrink: 0;
}

/* ============ FAQ ============ */
.faq-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    overflow: hidden;
    transition: border-color .2s ease;
}

.faq-item:hover {
    border-color: #d4e0ee;
}

.faq-item.open {
    border-color: #c7d7e8;
}

.faq-question {
    width: 100%;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
    text-align: left;
}

.faq-question .faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-soft);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: transform .3s ease;
    font-weight: 400;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
}

.faq-item.open .faq-answer {
    max-height: 300px;
}

.faq-answer-inner {
    padding: 0 20px 16px;
    font-size: 14px;
    color: var(--ink-2);
    line-height: 1.8;
}

/* ============ CTA BAND ============ */
.cta-band {
    background: #eef4fb;
    border-radius: 20px;
    padding: 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}

/* ============ FOOTER ============ */
.site-footer {
    background: #f1f5f9;
    border-top: 1px solid var(--line);
    padding: 56px 0 24px;
}

.footer-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 14px;
}

.footer-link {
    font-size: 13px;
    color: var(--ink-2);
    line-height: 1.9;
    display: inline-block;
    transition: all .2s ease;
}

.footer-link:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid var(--line);
    margin-top: 40px;
    padding-top: 20px;
    font-size: 12px;
    color: var(--ink-3);
}

/* ============ MOBILE HAMBURGER ============ */
.hamburger {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    align-items: center;
    justify-content: center;
    color: var(--ink);
    transition: background .2s ease;
}

.hamburger:hover {
    background: #f1f5f9;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 8px 24px rgba(15, 23, 42, .08);
    padding: 16px;
    z-index: 55;
}

.mobile-menu.active {
    display: block;
}

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 99px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1023px) {
    .hero-title {
        font-size: 34px;
    }
    .section {
        padding: 56px 0;
    }
    .scene-img-card img {
        height: 180px;
    }
}

@media (max-width: 767px) {
    .nav-top-row {
        height: auto;
        min-height: 64px;
    }
    .nav-second-row {
        top: 64px;
    }
    .hamburger {
        display: flex;
    }
    .nav-search-wrap {
        display: none;
    }
    .nav-cta-wrap {
        display: none;
    }
    .hero-section {
        padding: 48px 0 40px;
    }
    .hero-title {
        font-size: 28px;
        line-height: 1.3;
    }
    .hero-sub {
        font-size: 14px;
    }
    .stat-item:not(:last-child)::after {
        display: none;
    }
    .section {
        padding: 48px 0;
    }
    .section-title {
        font-size: 24px;
    }
    .cms-thumb,
    .cms-thumb-placeholder {
        width: 96px;
        height: 72px;
    }
    .cms-excerpt {
        display: none;
    }
    .cta-band {
        padding: 32px 24px;
        flex-direction: column;
        text-align: center;
    }
    .faq-question {
        font-size: 14px;
    }
}

@media (max-width: 520px) {
    .search-box {
        max-width: 100%;
    }
    .stat-number {
        font-size: 22px;
    }
    .hero-title .highlight {
        padding: 2px 6px;
    }
}

/* roulang page: category1 */
:root {
            --primary: #2563eb;
            --primary-deep: #1d4ed8;
            --primary-soft: #eef4fb;
            --accent: #0d9488;
            --accent-soft: #ecfdf7;
            --ink: #0f172a;
            --ink-2: #64748b;
            --ink-3: #94a3b8;
            --line: #e2e8f0;
            --bg: #f8fafc;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 12px rgba(15, 23, 42, .05);
            --shadow-hover: 0 4px 8px rgba(15, 23, 42, .06), 0 12px 24px rgba(15, 23, 42, .09);
            --shadow-cta: 0 2px 4px rgba(37, 99, 235, .3);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-padding-top: 120px;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        .container-web {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-web {
                padding: 0 16px;
            }
        }
        /* ====== Header ====== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--line);
            position: sticky;
            top: 0;
            z-index: 50;
        }
        .nav-first-row {
            height: 64px;
            border-bottom: 1px solid var(--line);
            background: #fff;
        }
        .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 60%, var(--accent) 100%);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            font-weight: 700;
            flex-shrink: 0;
            box-shadow: 0 2px 6px rgba(37, 99, 235, .25);
        }
        .site-logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: .01em;
            white-space: nowrap;
        }
        .search-box {
            position: relative;
            flex: 1;
            max-width: 420px;
        }
        .search-box input {
            width: 100%;
            height: 38px;
            border-radius: 8px;
            border: 1px solid #d7e2ec;
            padding: 0 78px 0 36px;
            font-size: 14px;
            background: #f8fafc;
            transition: all .2s;
        }
        .search-box input:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, .1);
        }
        .search-box .search-icon {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--ink-3);
            pointer-events: none;
        }
        .search-box .search-btn {
            position: absolute;
            right: 4px;
            top: 4px;
            height: 30px;
            padding: 0 14px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            border: none;
            transition: background .2s;
        }
        .search-box .search-btn:hover {
            background: var(--primary-deep);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-weight: 500;
            border: none;
            transition: all .2s ease;
            box-shadow: var(--shadow-cta);
        }
        .btn-primary:hover {
            background: var(--primary-deep);
            box-shadow: 0 4px 8px rgba(37, 99, 235, .35);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, .25);
        }
        .btn-sm {
            height: 36px;
            padding: 0 16px;
            font-size: 13px;
        }
        .btn-md {
            height: 42px;
            padding: 0 22px;
            font-size: 14px;
        }
        .btn-lg {
            height: 48px;
            padding: 0 32px;
            font-size: 15px;
            border-radius: 10px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            color: var(--primary);
            border: 1px solid #d7e2ec;
            border-radius: 8px;
            font-weight: 500;
            transition: all .2s ease;
        }
        .btn-outline:hover {
            background: var(--primary-soft);
            border-color: var(--primary);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .btn-outline:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, .15);
        }
        /* 第二行 */
        .nav-second-row {
            height: 48px;
            background: #fff;
            border-bottom: 1px solid var(--line);
            position: sticky;
            top: 64px;
            z-index: 40;
        }
        .nav-tabs-wrap {
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-tabs-wrap::-webkit-scrollbar {
            display: none;
        }
        .nav-tab-pill {
            flex-shrink: 0;
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-2);
            transition: all .2s ease;
            white-space: nowrap;
        }
        .nav-tab-pill:hover {
            background: #f1f5f9;
            color: #334155;
        }
        .nav-tab-pill.active {
            background: #eff6ff;
            color: var(--primary);
            font-weight: 600;
        }
        .nav-tabs-fade {
            position: absolute;
            right: 0;
            top: 0;
            bottom: 0;
            width: 32px;
            background: linear-gradient(to right, transparent, #fff);
            pointer-events: none;
        }
        /* 汉堡 */
        .hamburger-btn {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            border: 1px solid var(--line);
            background: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--ink);
            transition: all .2s;
        }
        .hamburger-btn:hover {
            background: #f1f5f9;
        }
        .mobile-menu {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--line);
            padding: 16px 20px;
        }
        .mobile-menu.open {
            display: block;
        }
        /* ====== Hero ====== */
        .cat-hero {
            position: relative;
            padding: 56px 0 48px;
            background: linear-gradient(135deg, #f8fafc 0%, #eef4fb 100%);
            border-bottom: 1px solid var(--line);
            overflow: hidden;
        }
        .cat-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .18;
        }
        .cat-hero .container-web {
            position: relative;
            z-index: 2;
        }
        .cat-hero h1 {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: -.01em;
            line-height: 1.3;
            color: var(--ink);
            margin-bottom: 12px;
        }
        .cat-hero .hero-desc {
            font-size: 15px;
            color: var(--ink-2);
            max-width: 560px;
            line-height: 1.8;
        }
        .cat-hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }
        .cat-hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            padding: 4px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .8);
            border: 1px solid var(--line);
            color: var(--ink-2);
        }
        /* ====== Stats ====== */
        .cat-stats {
            padding: 32px 0;
            background: #fff;
            border-bottom: 1px solid var(--line);
        }
        .stat-item {
            text-align: center;
            padding: 12px 8px;
        }
        .stat-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            font-feature-settings: "tnum";
            line-height: 1.2;
        }
        .stat-label {
            font-size: 13px;
            color: var(--ink-2);
            margin-top: 4px;
        }
        /* ====== 双栏主体 ====== */
        .cat-body {
            padding: 56px 0;
        }
        .cat-main {
            display: flex;
            flex-direction: column;
            gap: 36px;
        }
        .content-block {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--line);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease;
        }
        .content-block:hover {
            box-shadow: var(--shadow-hover);
        }
        .content-block h2 {
            font-size: 22px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .content-block p {
            font-size: 14px;
            line-height: 1.85;
            color: var(--ink-2);
        }
        .content-block .block-img {
            border-radius: 10px;
            overflow: hidden;
            border: 1px solid var(--line);
            background: var(--primary-soft);
            min-height: 180px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .content-block .block-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .content-block .block-img:hover img {
            transform: scale(1.03);
        }
        .block-cta {
            margin-top: 16px;
        }
        /* ====== Sidebar ====== */
        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--line);
            padding: 24px;
            box-shadow: var(--shadow-card);
            margin-bottom: 24px;
        }
        .sidebar-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--line);
            position: relative;
        }
        .sidebar-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -1px;
            width: 36px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .side-nav-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .side-nav-list a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 12px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--ink-2);
            transition: all .2s;
        }
        .side-nav-list a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .side-nav-list a .arrow-icon {
            margin-left: auto;
            opacity: 0;
            transition: opacity .2s;
            color: var(--primary);
        }
        .side-nav-list a:hover .arrow-icon {
            opacity: 1;
        }
        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 13px;
            color: var(--ink-2);
            padding: 6px 0;
            line-height: 1.6;
        }
        .contact-item svg {
            flex-shrink: 0;
            margin-top: 2px;
            color: var(--primary);
        }
        .related-item {
            padding: 12px 0;
            border-bottom: 1px solid #f1f5f9;
            transition: all .2s;
        }
        .related-item:last-child {
            border-bottom: none;
        }
        .related-item a {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            line-height: 1.5;
            display: block;
            transition: color .2s;
        }
        .related-item a:hover {
            color: var(--primary);
        }
        .related-item .related-meta {
            font-size: 12px;
            color: var(--ink-3);
            margin-top: 4px;
        }
        /* ====== FAQ ====== */
        .cat-faq {
            padding: 56px 0;
            background: #fff;
            border-top: 1px solid var(--line);
        }
        .section-title {
            font-size: 26px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.4;
        }
        .section-sub {
            font-size: 14px;
            color: var(--ink-2);
            margin-top: 6px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            margin-bottom: 10px;
            overflow: hidden;
            transition: box-shadow .2s;
        }
        .faq-item.active {
            box-shadow: var(--shadow-card);
            border-color: #d7e2ec;
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 16px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            cursor: pointer;
            transition: color .2s;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 400;
            transition: transform .3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows .3s ease;
        }
        .faq-item.active .faq-answer {
            grid-template-rows: 1fr;
        }
        .faq-answer-inner {
            overflow: hidden;
        }
        .faq-answer p {
            padding: 0 20px 16px;
            font-size: 14px;
            color: var(--ink-2);
            line-height: 1.8;
        }
        /* ====== CTA ====== */
        .cat-cta {
            padding: 56px 0;
        }
        .cta-panel {
            background: var(--primary-soft);
            border-radius: 20px;
            padding: 44px 40px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 14px;
        }
        .cta-panel h2 {
            font-size: 26px;
            font-weight: 600;
            color: var(--ink);
        }
        .cta-panel p {
            font-size: 15px;
            color: var(--ink-2);
            max-width: 520px;
        }
        .cta-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 10px;
        }
        /* ====== Footer ====== */
        .site-footer {
            background: #f1f5f9;
            border-top: 1px solid var(--line);
            padding: 48px 0 24px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 14px;
        }
        .footer-link {
            font-size: 13px;
            color: var(--ink-2);
            padding: 4px 0;
            transition: color .2s;
            display: block;
        }
        .footer-link:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--line);
            margin-top: 32px;
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: var(--ink-3);
        }
        .footer-bottom .copyright-links a {
            color: var(--ink-3);
            margin: 0 6px;
        }
        .footer-bottom .copyright-links a:hover {
            color: var(--primary);
        }
        /* ====== Responsive ====== */
        @media (max-width: 1023px) {
            .cat-body .grid {
                grid-template-columns: 1fr;
            }
            .sidebar-wrap {
                margin-top: 24px;
            }
        }
        @media (max-width: 767px) {
            .cat-hero h1 {
                font-size: 28px;
            }
            .cat-hero {
                padding: 40px 0 36px;
            }
            .content-block {
                padding: 20px;
            }
            .content-block h2 {
                font-size: 19px;
            }
            .cta-panel {
                padding: 32px 24px;
            }
            .search-box {
                display: none;
            }
            .hide-mobile {
                display: none;
            }
            .nav-first-row .desktop-actions {
                display: none;
            }
            .cat-stats .stat-num {
                font-size: 22px;
            }
        }
        @media (min-width: 768px) {
            .mobile-actions {
                display: none;
            }
        }
        @media (max-width: 767px) {
            .mobile-actions {
                display: flex;
                align-items: center;
                gap: 8px;
            }
            .desktop-actions {
                display: none;
            }
        }
        /* line clamp */
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .line-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        /* 详情页通用 */
        .prose-view {
            font-size: 15px;
            line-height: 1.9;
            color: var(--ink-2);
        }
        .prose-view h2 {
            font-size: 20px;
            font-weight: 600;
            color: var(--ink);
            margin: 28px 0 12px;
        }
        .prose-view h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            margin: 20px 0 10px;
        }
        .prose-view p {
            margin-bottom: 14px;
        }
        .prose-view img {
            border-radius: 10px;
            margin: 16px 0;
        }
        .prose-view blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-soft);
            padding: 12px 16px;
            border-radius: 0 8px 8px 0;
            margin: 16px 0;
            color: var(--ink-2);
        }
        .prose-view ul,
        .prose-view ol {
            padding-left: 22px;
            margin-bottom: 14px;
        }
        .prose-view li {
            margin-bottom: 4px;
        }
        /* 动画 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(16px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeInUp .5s ease both;
        }

/* roulang page: article */
:root{
  --primary:#2563eb;--primary-deep:#1d4ed8;--primary-soft:#eef4fb;
  --accent:#0d9488;--accent-soft:#ecfdf7;
  --ink:#0f172a;--ink-2:#64748b;--ink-3:#94a3b8;
  --line:#e2e8f0;--bg:#f8fafc;
  --radius:12px;--radius-sm:8px;
  --shadow-card:0 1px 3px rgba(15,23,42,.06),0 4px 12px rgba(15,23,42,.05);
  --shadow-hover:0 4px 8px rgba(15,23,42,.06),0 12px 24px rgba(15,23,42,.09);
  --shadow-cta:0 2px 4px rgba(37,99,235,.3);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:110px}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--ink);line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .2s ease}
button{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media(max-width:640px){.container{padding-left:16px;padding-right:16px}}

/* ===== 顶部导航 ===== */
.site-header{position:sticky;top:0;z-index:50;box-shadow:0 1px 3px rgba(15,23,42,.03)}
.nav-top-row{background:#fff;border-bottom:1px solid var(--line);height:64px}
.nav-top-inner{display:flex;align-items:center;justify-content:space-between;height:100%;gap:16px}
.logo-mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:18px;box-shadow:var(--shadow-card);flex-shrink:0}
.site-logo-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-0.01em;white-space:nowrap}
.search-box{display:flex;align-items:center;background:var(--bg);border:1px solid #d7e2ec;border-radius:999px;padding:4px 6px 4px 16px;gap:8px;transition:border-color .2s,box-shadow .2s;width:min(360px,100%)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(37,99,235,.1)}
.search-box input{border:none;outline:none;background:transparent;font-size:14px;color:var(--ink);width:100%;min-width:0}
.search-btn{background:var(--primary);color:#fff;border:none;border-radius:999px;padding:8px 18px;font-size:13px;font-weight:500;cursor:pointer;transition:background .2s,transform .15s;white-space:nowrap}
.search-btn:hover{background:var(--primary-deep)}
.search-btn:active{transform:translateY(1px)}
.login-link{font-size:14px;font-weight:500;color:var(--ink-2);transition:color .2s}
.login-link:hover{color:var(--primary)}
.cta-btn{display:inline-flex;align-items:center;justify-content:center;background:var(--primary);color:#fff;border-radius:8px;font-size:14px;font-weight:500;padding:10px 20px;transition:background .2s,transform .1s,box-shadow .2s;box-shadow:var(--shadow-cta)}
.cta-btn:hover{background:var(--primary-deep);box-shadow:0 4px 8px rgba(37,99,235,.35)}
.cta-btn:active{transform:translateY(1px)}
.cta-btn-sm{padding:8px 16px;font-size:13px}
.mobile-menu-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:8px;border:1px solid var(--line);background:#fff;color:var(--ink-2);cursor:pointer;transition:background .2s,border-color .2s}
.mobile-menu-btn:hover{background:var(--bg);border-color:#d7e2ec}
.nav-second-row{background:#fff;border-bottom:1px solid var(--line);height:48px;position:sticky;top:64px;z-index:40}
.nav-tabs-wrap{overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;display:flex;align-items:center;gap:4px;height:100%}
.nav-tabs-wrap::-webkit-scrollbar{display:none}
.nav-tab-pill{display:inline-flex;align-items:center;padding:6px 16px;border-radius:999px;font-size:14px;font-weight:500;color:var(--ink-2);white-space:nowrap;transition:background .2s,color .2s}
.nav-tab-pill:hover{background:var(--bg);color:var(--ink)}
.nav-tab-pill.active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.nav-tabs-fade{position:absolute;right:0;top:0;bottom:0;width:48px;background:linear-gradient(to right,transparent,#fff);pointer-events:none}
.mobile-menu-panel{display:none;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 8px 16px rgba(15,23,42,.06)}
.mobile-menu-panel.open{display:block}
.mobile-nav-link{display:block;padding:10px 12px;border-radius:8px;font-size:15px;font-weight:500;color:var(--ink-2);transition:background .2s,color .2s}
.mobile-nav-link:hover{background:var(--bg);color:var(--primary)}
.mobile-nav-link.active{background:var(--primary-soft);color:var(--primary)}

/* ===== 面包屑 ===== */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-2);margin-bottom:18px}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.bc-sep{color:var(--ink-3);font-size:12px}
.bc-current{color:var(--ink);font-weight:500;max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ===== 文章头部 ===== */
.article-hero-bg{
  background:linear-gradient(135deg,rgba(248,250,252,.96),rgba(238,244,251,.92)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;border-bottom:1px solid var(--line);
}
.article-header{padding:8px 0 34px}
.article-title{font-size:28px;font-weight:700;line-height:1.4;letter-spacing:-0.01em;color:var(--ink);margin-bottom:14px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--ink-3)}
.meta-dot{width:3px;height:3px;border-radius:50%;background:var(--ink-3)}
.badge{display:inline-flex;align-items:center;gap:4px;background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:500;padding:3px 12px;border-radius:999px;line-height:1.5}
.article-source{color:var(--ink-2)}
@media(max-width:640px){.article-title{font-size:23px;line-height:1.45}}

/* ===== 正文 ===== */
.article-block{background:#fff;border:1px solid var(--line);border-radius:16px;padding:36px;box-shadow:var(--shadow-card)}
@media(max-width:640px){.article-block{padding:24px 20px}}
.article-content{font-size:15px;line-height:1.9;color:var(--ink);word-break:break-word}
.article-content>*+*{margin-top:1em}
.article-content h2{font-size:20px;font-weight:600;line-height:1.5;margin-top:1.8em;margin-bottom:.6em;padding-bottom:.35em;border-bottom:1px solid var(--line)}
.article-content h3{font-size:17px;font-weight:600;margin-top:1.5em;margin-bottom:.4em}
.article-content p{line-height:1.9}
.article-content img{width:100%;height:auto;border-radius:10px;border:1px solid var(--line);margin:1.5em auto}
.article-content blockquote{border-left:4px solid var(--primary);background:var(--primary-soft);padding:14px 20px;border-radius:0 8px 8px 0;margin:1.5em 0}
.article-content blockquote p{margin:0}
.article-content ul,.article-content ol{padding-left:1.5em;margin:1em 0}
.article-content ul{list-style:disc}
.article-content ol{list-style:decimal}
.article-content li{margin:.4em 0}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.article-content a:hover{color:var(--primary-deep)}
.article-content code{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:2px 8px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em}
.article-content pre{background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:16px 20px;overflow-x:auto;margin:1.5em 0}
.article-content pre code{background:transparent;border:none;padding:0}
.article-content table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:14px}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-content th{background:var(--bg);font-weight:600}

/* ===== 空状态 / 骨架屏 ===== */
.skeleton-block{background:linear-gradient(90deg,#f1f5f9 25%,#e2e8f0 37%,#f1f5f9 63%);background-size:400% 100%;border-radius:6px;animation:skeleton-loading 1.4s ease infinite}
@keyframes skeleton-loading{0%{background-position:100% 50%}100%{background-position:0 50%}}
.article-empty{text-align:center;padding:30px 0 10px}
.article-empty .skeleton-block{margin-bottom:14px}

/* ===== 相关推荐 ===== */
.section-title{font-size:22px;font-weight:700;color:var(--ink);line-height:1.4}
.rel-card{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px;box-shadow:var(--shadow-card);transition:box-shadow .2s,transform .15s;height:100%}
.rel-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.rel-thumb{width:96px;height:64px;border-radius:6px;object-fit:cover;flex-shrink:0}
.rel-thumb-fallback{width:96px;height:64px;border-radius:6px;display:flex;align-items:center;justify-content:center;background:var(--bg);border:1px solid var(--line);flex-shrink:0;color:var(--ink-3)}
.rel-info{display:flex;flex-direction:column;flex:1;min-width:0}
.rel-title{font-size:14px;font-weight:600;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s}
.rel-title:hover{color:var(--primary)}
.rel-cat{font-size:11px;color:var(--accent);font-weight:500;margin-bottom:4px}
.rel-time{font-size:12px;color:var(--ink-3);margin-top:auto}

/* ===== 返回入口 ===== */
.back-nav{border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding-top:18px}
.back-nav a{font-size:14px;font-weight:500;transition:color .2s}
.back-nav .back-link{color:var(--ink-2)}
.back-nav .back-link:hover{color:var(--primary)}
.back-nav .next-link{color:var(--primary)}
.back-nav .next-link:hover{color:var(--primary-deep)}

/* ===== 页脚 ===== */
.site-footer{background:#f1f5f9;border-top:1px solid var(--line);padding:48px 0 24px;margin-top:64px}
.footer-title{font-size:15px;font-weight:600;margin-bottom:12px;color:var(--ink)}
.footer-link{font-size:13px;color:var(--ink-2);line-height:2;transition:color .2s;display:inline-block}
.footer-link:hover{color:var(--primary)}

/* ===== 通用按钮 ===== */
.link-btn{display:inline-flex;align-items:center;gap:6px;background:var(--primary);color:#fff;border-radius:8px;padding:10px 22px;font-size:14px;font-weight:500;transition:background .2s,transform .1s,box-shadow .2s;box-shadow:var(--shadow-cta)}
.link-btn:hover{background:var(--primary-deep)}
.link-btn:active{transform:translateY(1px)}

/* ===== 响应式 ===== */
@media(max-width:1023px){
  .nav-second-row{top:64px}
}
@media(max-width:767px){
  .search-box{display:none}
  .mobile-search{display:flex;width:100%}
  .site-logo-text{font-size:17px}
  .article-title{font-size:23px}
  .nav-second-row{top:64px}
}
@media(max-width:520px){
  .breadcrumb{font-size:12px}
  .bc-current{max-width:200px}
  .article-block{padding:20px 16px}
  .rel-card{padding:10px}
  .rel-thumb,.rel-thumb-fallback{width:80px;height:56px}
}

/* roulang page: category2 */
:root {
            --primary: #2563eb;
            --primary-deep: #1d4ed8;
            --primary-soft: #eef4fb;
            --accent: #0d9488;
            --accent-soft: #ecfdf7;
            --ink: #0f172a;
            --ink-2: #64748b;
            --ink-3: #94a3b8;
            --line: #e2e8f0;
            --bg: #f8fafc;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 12px rgba(15, 23, 42, .05);
            --shadow-hover: 0 4px 8px rgba(15, 23, 42, .06), 0 12px 24px rgba(15, 23, 42, .09);
            --shadow-cta: 0 2px 4px rgba(37, 99, 235, .3);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-padding-top: 120px;
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            font-family: inherit;
        }
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
        }
        .nav-first-row {
            background: #fff;
            border-bottom: 1px solid var(--line);
            height: 64px;
        }
        .nav-inner {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 17px;
            flex-shrink: 0;
        }
        .site-logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: -0.01em;
        }
        .nav-search {
            flex: 1;
            max-width: 420px;
            display: flex;
            align-items: center;
            background: #f8fafc;
            border: 1px solid #d7e2ec;
            border-radius: 8px;
            overflow: hidden;
            transition: all .2s;
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(37, 99, 235, .1);
            background: #fff;
        }
        .nav-search .search-icon {
            padding-left: 12px;
            color: var(--ink-3);
            display: flex;
        }
        .nav-search input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            padding: 8px 10px;
            font-size: 14px;
            color: var(--ink);
        }
        .nav-search button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: background .2s;
        }
        .nav-search button:hover {
            background: var(--primary-deep);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .nav-login {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-2);
            transition: color .2s;
        }
        .nav-login:hover {
            color: var(--primary);
        }
        .btn-consult {
            background: var(--primary);
            color: #fff;
            border: none;
            height: 36px;
            padding: 0 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all .2s;
            box-shadow: var(--shadow-cta);
        }
        .btn-consult:hover {
            background: var(--primary-deep);
            box-shadow: 0 4px 8px rgba(37, 99, 235, .35);
        }
        .btn-consult:active {
            transform: translateY(1px);
        }
        .nav-second-row {
            background: #fff;
            border-bottom: 1px solid var(--line);
            height: 48px;
            position: relative;
        }
        .nav-second-inner {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            position: relative;
        }
        .nav-tabs-wrap {
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            width: 100%;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-tabs-wrap::-webkit-scrollbar {
            display: none;
        }
        .nav-tab-pill {
            display: inline-flex;
            align-items: center;
            height: 32px;
            padding: 0 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-2);
            white-space: nowrap;
            transition: all .2s;
        }
        .nav-tab-pill:hover {
            background: #f1f5f9;
            color: var(--ink);
        }
        .nav-tab-pill.active {
            background: #eff6ff;
            color: var(--primary);
            font-weight: 600;
        }
        .nav-tabs-fade {
            position: absolute;
            right: 0;
            top: 0;
            bottom: 0;
            width: 40px;
            pointer-events: none;
            background: linear-gradient(270deg, #fff 0%, rgba(255, 255, 255, 0) 100%);
        }
        .hamburger-mobile {
            display: none;
            background: none;
            border: 1px solid var(--line);
            border-radius: 8px;
            width: 38px;
            height: 38px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--ink);
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--line);
            box-shadow: 0 12px 24px rgba(15, 23, 42, .1);
            z-index: 60;
            padding: 12px 16px;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-drawer.open {
            display: flex;
        }
        .mobile-drawer a {
            padding: 10px 12px;
            border-radius: 8px;
            font-size: 15px;
            color: var(--ink);
            font-weight: 500;
        }
        .mobile-drawer a:hover,
        .mobile-drawer a.active {
            background: #eff6ff;
            color: var(--primary);
        }
        .site-footer {
            background: #f1f5f9;
            border-top: 1px solid var(--line);
            padding: 56px 0 0;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 14px;
        }
        .footer-link {
            font-size: 13px;
            color: var(--ink-2);
            padding-top: 4px;
            padding-bottom: 4px;
            transition: color .2s;
            display: inline-block;
        }
        .footer-link:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--line);
            margin-top: 40px;
            padding: 20px 0;
            font-size: 12px;
            color: var(--ink-3);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }
        @media (max-width: 767px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .nav-inner {
                padding: 0 16px;
            }
            .nav-second-inner {
                padding: 0 16px;
            }
            .nav-search {
                display: none;
            }
            .nav-login {
                display: none;
            }
            .btn-consult {
                display: none;
            }
            .hamburger-mobile {
                display: flex;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media(min-width:768px) and (max-width:1023px) {
            .nav-search {
                max-width: 240px;
            }
            .btn-consult {
                padding: 0 14px;
                font-size: 13px;
            }
        }
        .hero-cat {
            background: linear-gradient(120deg, #f8fafc 0%, #eef4fb 100%);
            border-bottom: 1px solid var(--line);
            padding: 56px 0 48px;
        }
        .breadcrumb {
            font-size: 13px;
            color: var(--ink-3);
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--ink-2);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--ink-3);
        }
        .breadcrumb .current {
            color: var(--ink);
            font-weight: 500;
        }
        .hero-cat h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .hero-cat .subtitle {
            font-size: 15px;
            color: var(--ink-2);
            line-height: 1.7;
            max-width: 640px;
        }
        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 36px;
            border-top: 1px solid rgba(226, 232, 240, .8);
            padding-top: 28px;
        }
        .hero-metrics .metric {
            border-left: 2px solid var(--primary);
            padding-left: 16px;
        }
        .hero-metrics .metric .num {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            font-feature-settings: "tnum";
        }
        .hero-metrics .metric .label {
            font-size: 13px;
            color: var(--ink-2);
            margin-top: 4px;
        }
        .cat-main-wrap {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 56px 0 72px;
        }
        .cat-content .content-block {
            margin-bottom: 44px;
        }
        .cat-content .content-block h2 {
            font-size: 24px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 16px;
            position: relative;
            padding-left: 16px;
        }
        .cat-content .content-block h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            border-radius: 2px;
            background: var(--primary);
        }
        .cat-content .content-block p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--ink-2);
            margin-bottom: 14px;
        }
        .cat-content .content-block .media-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin: 20px 0;
        }
        .cat-content .content-block .media-row img {
            border-radius: 10px;
            border: 1px solid var(--line);
            object-fit: cover;
            width: 100%;
            height: 180px;
        }
        .cat-content .feature-list {
            list-style: none;
            margin: 18px 0;
        }
        .cat-content .feature-list li {
            position: relative;
            padding-left: 24px;
            font-size: 15px;
            color: var(--ink-2);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .cat-content .feature-list li::before {
            content: '';
            position: absolute;
            left: 4px;
            top: 10px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
        }
        .content-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 500;
            box-shadow: var(--shadow-cta);
            transition: all .2s;
        }
        .content-cta:hover {
            background: var(--primary-deep);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(37, 99, 235, .4);
        }
        .sidebar-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 12px;
            padding: 24px;
            margin-bottom: 20px;
            box-shadow: var(--shadow-card);
        }
        .sidebar-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            padding-bottom: 12px;
            border-bottom: 1px solid var(--line);
            margin-bottom: 14px;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid #f1f5f9;
            font-size: 14px;
            color: var(--ink-2);
            transition: all .2s;
        }
        .sidebar-nav a:last-child {
            border-bottom: none;
        }
        .sidebar-nav a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .sidebar-nav a .arrow {
            font-size: 12px;
            color: var(--ink-3);
        }
        .sidebar-contact p {
            font-size: 13px;
            color: var(--ink-2);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .sidebar-contact .contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            font-size: 13px;
            color: var(--ink-2);
        }
        .sidebar-contact .contact-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            flex-shrink: 0;
        }
        .info-flow {
            border-top: 3px solid var(--primary);
            border-radius: 0 0 12px 12px;
            overflow: hidden;
        }
        .info-flow-item {
            display: flex;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid #f1f5f9;
            align-items: flex-start;
        }
        .info-flow-item:last-child {
            border-bottom: none;
        }
        .info-flow-item .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            margin-top: 7px;
            flex-shrink: 0;
        }
        .info-flow-item .info-title {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            line-height: 1.5;
            transition: color .2s;
        }
        .info-flow-item .info-title:hover {
            color: var(--primary);
        }
        .info-flow-item .info-date {
            font-size: 12px;
            color: var(--ink-3);
            margin-top: 4px;
        }
        .featured-modules {
            background: #fff;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            padding: 64px 0;
        }
        .featured-modules .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--ink);
            text-align: center;
            margin-bottom: 10px;
        }
        .featured-modules .section-sub {
            font-size: 15px;
            color: var(--ink-2);
            text-align: center;
            max-width: 560px;
            margin: 0 auto 44px;
            line-height: 1.7;
        }
        .module-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .module-card {
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: 12px;
            padding: 32px 28px;
            transition: all .25s;
        }
        .module-card:hover {
            border-color: #bfdbfe;
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .module-card .icon-box {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin-bottom: 18px;
        }
        .module-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 10px;
        }
        .module-card p {
            font-size: 14px;
            color: var(--ink-2);
            line-height: 1.7;
        }
        .workflow-section {
            padding: 72px 0;
            background: var(--bg);
        }
        .workflow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
            counter-reset: step;
        }
        .workflow-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 12px;
            padding: 28px 24px;
            position: relative;
            transition: all .25s;
        }
        .workflow-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .workflow-item .step-num {
            font-size: 32px;
            font-weight: 700;
            color: #e2e8f0;
            line-height: 1;
            margin-bottom: 16px;
            font-feature-settings: "tnum";
        }
        .workflow-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 8px;
        }
        .workflow-item p {
            font-size: 13px;
            color: var(--ink-2);
            line-height: 1.6;
        }
        .faq-section {
            padding: 72px 0;
            background: #fff;
            border-top: 1px solid var(--line);
        }
        .faq-list {
            max-width: 800px;
            margin: 40px auto 0;
        }
        .faq-item {
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow .2s;
        }
        .faq-item:hover {
            border-color: #bfdbfe;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
        }
        .faq-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
            transition: transform .3s;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows .3s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            grid-template-rows: 1fr;
        }
        .faq-answer-inner {
            overflow: hidden;
            font-size: 14px;
            color: var(--ink-2);
            line-height: 1.75;
            padding-bottom: 18px;
        }
        .cta-section {
            padding: 72px 0;
            background: var(--bg);
        }
        .cta-box {
            background: linear-gradient(135deg, #eef4fb 0%, #f0f9ff 100%);
            border-radius: 16px;
            padding: 48px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            border: 1px solid #dbeafe;
        }
        .cta-box h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
        }
        .cta-box p {
            font-size: 15px;
            color: var(--ink-2);
            max-width: 480px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        @media (max-width: 1023px) {
            .cat-main-wrap {
                grid-template-columns: 1fr;
            }
            .module-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .workflow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 767px) {
            .hero-cat {
                padding: 40px 0 36px;
            }
            .hero-cat h1 {
                font-size: 28px;
            }
            .hero-metrics {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
                margin-top: 28px;
                padding-top: 20px;
            }
            .hero-metrics .metric {
                padding-left: 12px;
            }
            .hero-metrics .metric .num {
                font-size: 20px;
            }
            .cat-main-wrap {
                padding: 40px 0 56px;
            }
            .cat-content .content-block .media-row {
                grid-template-columns: 1fr;
            }
            .cat-content .content-block .media-row img {
                height: 140px;
            }
            .module-grid {
                grid-template-columns: 1fr;
            }
            .workflow-grid {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: 32px 24px;
                flex-direction: column;
                text-align: center;
            }
            .cta-actions {
                justify-content: center;
            }
            .featured-modules,
            .workflow-section,
            .faq-section,
            .cta-section {
                padding: 48px 0;
            }
            .featured-modules .section-title {
                font-size: 24px;
            }
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 32px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            border: none;
            box-shadow: var(--shadow-cta);
            transition: all .2s;
        }
        .btn-primary:hover {
            background: var(--primary-deep);
            box-shadow: 0 6px 16px rgba(37, 99, 235, .4);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: 10px;
            background: #fff;
            color: var(--primary);
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            border: 1px solid #d7e2ec;
            transition: all .2s;
        }
        .btn-secondary:hover {
            background: var(--primary-soft);
            border-color: var(--primary);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            background: var(--accent-soft);
            color: #0f766e;
        }