/* roulang page: index */
:root {
    --primary: #0284c7;
    --primary-400: #38bdf8;
    --primary-500: #0ea5e9;
    --primary-600: #0369a1;
    --primary-700: #075985;
    --primary-800: #0c4a6e;
    --primary-50: #f0f9ff;
    --accent: #f59e0b;
    --accent-600: #d97706;
    --accent-50: #fffbeb;
    --bg: #f5f8fb;
    --surface: #ffffff;
    --text: #0f172a;
    --text-secondary: #52627a;
    --text-weak: #8b9bb4;
    --border: #dde6f0;
    --border-strong: #c3d7ee;
    --radius: 18px;
    --radius-sm: 12px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 8px rgba(15, 42, 65, .06);
    --shadow-md: 0 10px 28px rgba(15, 42, 65, .08);
    --shadow-lg: 0 20px 48px rgba(15, 42, 65, .12);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.3; font-weight: 700; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: var(--primary-600); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-700); }
button { cursor: pointer; font-family: inherit; }
input { font-family: inherit; }
section[id] { scroll-margin-top: 92px; }

a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible {
    outline: 3px solid rgba(2, 132, 199, .35);
    outline-offset: 2px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 600;
    padding: 13px 30px;
    border-radius: 999px;
    border: 2px solid transparent;
    transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
    text-decoration: none;
    line-height: 1.4;
    white-space: nowrap;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 8px 20px rgba(2, 132, 199, .25);
}
.btn-primary:hover {
    background: var(--primary-600);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(2, 132, 199, .34);
}
.btn-outline {
    background: transparent;
    border-color: rgba(255, 255, 255, .7);
    color: #fff;
}
.btn-outline:hover {
    background: rgba(255, 255, 255, .14);
    color: #fff;
    transform: translateY(-2px);
}
.btn-light {
    background: #fff;
    color: var(--primary-700);
    box-shadow: 0 8px 20px rgba(0, 0, 0, .12);
}
.btn-light:hover {
    background: var(--primary-50);
    color: var(--primary-700);
    transform: translateY(-2px);
    box-shadow: 0 12px 26px rgba(0, 0, 0, .16);
}
.btn-ghost {
    background: transparent;
    border-color: rgba(255, 255, 255, .55);
    color: #fff;
}
.btn-ghost:hover {
    background: rgba(255, 255, 255, .12);
    color: #fff;
    transform: translateY(-2px);
}

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, .88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}
.header-inner {
    display: flex;
    align-items: center;
    gap: 22px;
    min-height: 72px;
}
.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    text-decoration: none;
}
.brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-500));
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    box-shadow: 0 6px 16px rgba(2, 132, 199, .28);
    flex-shrink: 0;
}
.brand-text {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: .5px;
    color: var(--text);
    white-space: nowrap;
}
.header-search { flex: 1; display: flex; justify-content: center; }
.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav-link {
    padding: 10px 18px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 15px;
    color: var(--text-secondary);
    transition: background .2s ease, color .2s ease;
    white-space: nowrap;
}
.nav-link:hover { color: var(--primary); background: var(--primary-50); }
.nav-link.active { color: var(--primary-700); background: var(--primary-50); }
.menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    font-size: 18px;
    transition: background .2s ease, color .2s ease, border-color .2s ease;
    margin-left: auto;
}
.menu-toggle:hover {
    background: var(--primary-50);
    color: var(--primary);
    border-color: var(--primary);
}
.mobile-search { display: none; }

/* ===== Search Form ===== */
.search-form {
    display: flex;
    align-items: center;
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: 999px;
    padding: 6px 8px 6px 18px;
    width: 100%;
    max-width: 460px;
    box-shadow: var(--shadow-sm);
    transition: border-color .2s ease, box-shadow .2s ease;
}
.search-form:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(2, 132, 199, .12);
}
.search-icon { color: var(--text-weak); font-size: 15px; flex-shrink: 0; }
.search-form input[type="search"] {
    border: none;
    outline: none;
    flex: 1;
    font-size: 15px;
    padding: 8px 12px;
    background: transparent;
    min-width: 0;
    color: var(--text);
}
.search-form input::placeholder { color: var(--text-weak); }
.search-btn {
    background: var(--primary);
    border: none;
    color: #fff;
    border-radius: 999px;
    padding: 9px 22px;
    font-weight: 600;
    font-size: 14px;
    transition: background .2s ease, transform .2s ease;
    flex-shrink: 0;
}
.search-btn:hover { background: var(--primary-600); transform: scale(1.02); }

/* ===== Hero ===== */
.hero {
    position: relative;
    padding: 120px 0 100px;
    overflow: hidden;
    background-color: var(--primary-800);
}
.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    z-index: 0;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(8, 35, 56, .88) 0%, rgba(12, 74, 110, .82) 100%);
    z-index: 1;
}
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    max-width: 880px;
}
.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, .14);
    border: 1px solid rgba(255, 255, 255, .24);
    border-radius: 999px;
    padding: 8px 22px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 28px;
    letter-spacing: .5px;
}
.hero h1 {
    font-size: clamp(34px, 6vw, 56px);
    font-weight: 800;
    line-height: 1.18;
    color: #fff;
    margin-bottom: 22px;
    letter-spacing: 1px;
}
.hero h1 .highlight { color: #fbbf24; }
.hero-sub {
    font-size: clamp(16px, 2vw, 20px);
    color: rgba(255, 255, 255, .85);
    max-width: 640px;
    margin: 0 auto 38px;
    line-height: 1.7;
}
.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    background: rgba(255, 255, 255, .10);
    border: 1px solid rgba(255, 255, 255, .16);
    border-radius: var(--radius);
    padding: 26px 16px;
    max-width: 700px;
    margin: 0 auto;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}
.hero-stats .stat-item {
    flex: 1;
    min-width: 120px;
    text-align: center;
    padding: 6px 8px;
}
.hero-stats .stat-item strong {
    display: block;
    font-size: 30px;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
}
.hero-stats .stat-item span {
    color: rgba(255, 255, 255, .75);
    font-size: 14px;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}
.hero-content > * { animation: fadeUp .7s ease both; }
.hero-content > *:nth-child(2) { animation-delay: .08s; }
.hero-content > *:nth-child(3) { animation-delay: .16s; }
.hero-content > *:nth-child(4) { animation-delay: .24s; }
.hero-content > *:nth-child(5) { animation-delay: .32s; }

/* ===== Section ===== */
.section { padding: 90px 0; }
.section-white {
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}
.section-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--primary);
    background: var(--primary-50);
    padding: 7px 18px;
    border-radius: 999px;
    margin-bottom: 16px;
}
.section-head h2 {
    font-size: clamp(26px, 4vw, 36px);
    color: var(--text);
    margin-bottom: 14px;
    letter-spacing: .5px;
}
.section-head p {
    color: var(--text-secondary);
    font-size: 17px;
    margin-bottom: 0;
}

/* ===== Features ===== */
.features-grid { row-gap: 28px; }
.feature-card {
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: transform .25s ease, box-shadow .25s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}
.feature-card .card-img {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}
.feature-card .card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}
.feature-card:hover .card-img img { transform: scale(1.05); }
.card-body {
    padding: 26px 24px 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.card-tag {
    display: inline-block;
    align-self: flex-start;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-50);
    padding: 5px 14px;
    border-radius: 999px;
    margin-bottom: 14px;
}
.card-body h3 { font-size: 20px; margin-bottom: 10px; }
.card-body p { color: var(--text-secondary); font-size: 15px; flex: 1; margin-bottom: 16px; }
.feature-points { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--border); padding-top: 14px; }
.feature-points li {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 14px;
    color: var(--text-secondary);
    padding: 4px 0;
    font-weight: 500;
}
.feature-points i { color: var(--primary); font-size: 14px; }

/* ===== Categories ===== */
.categories-grid { row-gap: 28px; }
.category-card {
    display: flex;
    flex-direction: row;
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: transform .25s ease, box-shadow .25s ease;
    height: 100%;
    text-decoration: none;
    color: var(--text);
}
.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
    color: var(--text);
}
.category-cover {
    width: 42%;
    min-height: 230px;
    overflow: hidden;
}
.category-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}
.category-card:hover .category-cover img { transform: scale(1.05); }
.category-body {
    padding: 32px 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.category-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: var(--accent-50);
    color: var(--accent-600);
    font-size: 13px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 999px;
    margin-bottom: 16px;
}
.category-body h3 { font-size: 24px; margin-bottom: 10px; }
.category-body p {
    color: var(--text-secondary);
    font-size: 15px;
    flex: 1;
    margin-bottom: 18px;
}
.category-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 700;
    font-size: 15px;
}
.category-link i { transition: transform .25s ease; }
.category-card:hover .category-link i { transform: translateX(5px); }

/* ===== Latest ===== */
.news-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    max-width: 880px;
    margin: 0 auto;
    overflow: hidden;
}
.news-panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
    background: #fbfdff;
}
.news-panel-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 17px;
    color: var(--text);
}
.news-panel-title i { color: var(--primary); }
.news-panel-badge {
    font-size: 13px;
    font-weight: 600;
    color: var(--accent-600);
    background: var(--accent-50);
    padding: 5px 14px;
    border-radius: 999px;
    white-space: nowrap;
}
.news-list { padding: 0; }
.news-item {
    position: relative;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    text-decoration: none;
    transition: background .2s ease;
}
.news-item:last-child { border-bottom: none; }
.news-item:hover {
    background: var(--primary-50);
    text-decoration: none;
    color: var(--text);
}
.news-category {
    background: var(--accent-50);
    color: var(--accent-600);
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
}
.news-title {
    flex: 1;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color .2s ease;
}
.news-item:hover .news-title { color: var(--primary-700); }
.news-date {
    font-size: 14px;
    color: var(--text-weak);
    white-space: nowrap;
    flex-shrink: 0;
}
.news-arrow {
    color: var(--primary);
    opacity: 0;
    transform: translateX(-8px);
    transition: opacity .25s ease, transform .25s ease;
    flex-shrink: 0;
}
.news-item:hover .news-arrow { opacity: 1; transform: translateX(0); }
.empty-tip {
    padding: 52px 24px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 15px;
}

/* ===== Showcase ===== */
.showcase {
    position: relative;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}
.showcase-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(8, 47, 73, .92) 0%, rgba(12, 74, 110, .94) 100%);
    z-index: 1;
}
.showcase-content { position: relative; z-index: 2; }
.section-head.light .section-eyebrow {
    background: rgba(255, 255, 255, .14);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .18);
}
.section-head.light h2 { color: #fff; }
.section-head.light p { color: rgba(255, 255, 255, .76); }
.showcase-grid { row-gap: 28px; }
.showcase-card {
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: var(--radius);
    overflow: hidden;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: transform .25s ease, background .25s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.showcase-card:hover {
    transform: translateY(-6px);
    background: rgba(255, 255, 255, .13);
}
.showcase-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    transition: transform .5s ease;
}
.showcase-card:hover img { transform: scale(1.06); }
.showcase-body { padding: 24px; color: #fff; flex: 1; display: flex; flex-direction: column; }
.showcase-tag {
    display: inline-block;
    align-self: flex-start;
    background: rgba(251, 191, 36, .18);
    color: #fbbf24;
    font-size: 13px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 999px;
    margin-bottom: 12px;
}
.showcase-body h3 { color: #fff; font-size: 19px; margin-bottom: 8px; }
.showcase-body p { color: rgba(255, 255, 255, .76); font-size: 15px; margin: 0; flex: 1; }

/* ===== Stats ===== */
.stats-panel {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary) 60%, #0e7490 100%);
    border-radius: var(--radius-lg);
    padding: 52px 40px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(2, 132, 199, .18);
}
.stats-panel::before,
.stats-panel::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, .07);
}
.stats-panel::before { width: 240px; height: 240px; top: -80px; right: -60px; }
.stats-panel::after { width: 160px; height: 160px; bottom: -50px; left: -40px; }
.stat-block { position: relative; z-index: 1; }
.stat-block strong {
    display: block;
    font-size: 40px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 4px;
}
.stat-block span {
    color: rgba(255, 255, 255, .82);
    font-size: 15px;
}

/* ===== Process ===== */
.process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.step {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 30px;
    position: relative;
    text-align: center;
    transition: box-shadow .25s ease, transform .25s ease;
}
.step:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}
.step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 32px;
    right: -22px;
    width: 32px;
    height: 2px;
    border-top: 2px dashed #cbd5e1;
    z-index: 2;
}
.step-num {
    width: 58px;
    height: 58px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: var(--primary-50);
    color: var(--primary);
    font-weight: 800;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--primary);
    transition: background .25s ease, color .25s ease;
}
.step:hover .step-num {
    background: var(--primary);
    color: #fff;
}
.step h3 { font-size: 20px; margin-bottom: 10px; }
.step p { color: var(--text-secondary); font-size: 15px; margin-bottom: 0; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 14px;
    overflow: hidden;
    transition: box-shadow .2s ease, border-color .2s ease;
}
.faq-item[open] {
    box-shadow: var(--shadow-md);
    border-color: var(--border-strong);
}
.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    font-size: 17px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    color: var(--text);
    transition: color .2s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 14px;
    color: var(--text-weak);
    transition: transform .25s ease;
    flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-item summary:hover { color: var(--primary-700); }
.faq-item > p {
    margin: 0;
    padding: 0 24px 22px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
}

/* ===== CTA ===== */
.cta-panel {
    position: relative;
    background: linear-gradient(135deg, #0c4a6e 0%, #0284c7 70%, #0e7490 100%);
    border-radius: var(--radius-lg);
    padding: 60px 48px;
    text-align: center;
    color: #fff;
    box-shadow: 0 24px 48px rgba(2, 132, 199, .22);
    overflow: hidden;
}
.cta-panel::before,
.cta-panel::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, .08);
}
.cta-panel::before { width: 320px; height: 320px; top: -140px; right: -100px; }
.cta-panel::after { width: 200px; height: 200px; bottom: -80px; left: -60px; }
.cta-panel h2 {
    color: #fff;
    font-size: clamp(24px, 4vw, 34px);
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}
.cta-panel p {
    color: rgba(255, 255, 255, .85);
    max-width: 560px;
    margin: 0 auto 32px;
    font-size: 17px;
    position: relative;
    z-index: 1;
}
.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

/* ===== Footer ===== */
.site-footer {
    background: #0b1b2b;
    color: #cbd5e1;
    padding-top: 64px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.footer-brand .brand-text { color: #fff; }
.footer-brand .brand-mark {
    background: linear-gradient(135deg, var(--primary-500), var(--primary));
}
.footer-desc {
    margin-top: 16px;
    font-size: 15px;
    color: #94a3b8;
    max-width: 340px;
    line-height: 1.8;
}
.footer-col h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 16px;
    letter-spacing: .5px;
}
.footer-col-link {
    display: block;
    color: #94a3b8;
    padding: 6px 0;
    font-size: 15px;
    transition: color .2s ease, padding-left .2s ease;
}
.footer-col-link:hover {
    color: var(--primary-400);
    padding-left: 4px;
}
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding: 22px 0;
    font-size: 14px;
    color: #64748b;
}
.footer-bottom p { margin: 0; }

/* ===== Responsive ===== */
@media (max-width: 1023px) {
    .header-inner { gap: 12px; }
    .header-search { display: none; }
    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--surface);
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 16px 24px 24px;
        border-top: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        display: none;
        z-index: 99;
    }
    .main-nav.open { display: flex; }
    .nav-link {
        padding: 12px 16px;
        border-radius: var(--radius-sm);
        font-size: 16px;
    }
    .mobile-search { display: block; margin-top: 14px; }
    .menu-toggle { display: inline-flex; }
    .showcase { background-attachment: scroll; }
}

@media (max-width: 767px) {
    .section { padding: 64px 0; }
    .hero { padding: 80px 0 64px; }
    .stats-panel { grid-template-columns: repeat(2, 1fr); padding: 36px 24px; }
    .process-steps { grid-template-columns: 1fr; }
    .step:not(:last-child)::after { display: none; }
    .category-cover { width: 38%; min-height: 190px; }
    .category-body { padding: 24px 22px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .cta-panel { padding: 44px 24px; }
}

@media (max-width: 639px) {
    .container { padding: 0 18px; }
    .news-item {
        flex-wrap: wrap;
        gap: 10px;
        padding: 16px 18px;
    }
    .news-title {
        flex: 1 1 100%;
        order: 3;
        white-space: normal;
    }
    .news-category { order: 1; }
    .news-date { order: 2; }
    .news-arrow { order: 4; margin-left: auto; }
    .category-card { flex-direction: column; }
    .category-cover { width: 100%; min-height: 180px; }
    .hero-stats .stat-item { flex: 1 1 42%; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { width: 100%; }
    .section-head { margin-bottom: 40px; }
    .cta-actions { flex-direction: column; align-items: stretch; }
    .cta-actions .btn { width: 100%; }
}

/* roulang page: article */
:root {
            --primary: #1a6df5;
            --primary-dark: #0d4fc4;
            --primary-light: #e9f0ff;
            --accent: #36c6f0;
            --accent-light: #e0f7ff;
            --dark: #0b1526;
            --dark-soft: #12203a;
            --bg: #f4f7fb;
            --card: #ffffff;
            --text: #1c2b3a;
            --text-weak: #5d6f83;
            --text-muted: #8b9bad;
            --border: #dfe6ef;
            --radius: 18px;
            --radius-sm: 10px;
            --radius-lg: 28px;
            --shadow: 0 4px 20px rgba(16, 32, 58, 0.06);
            --shadow-hover: 0 14px 40px rgba(16, 32, 58, 0.12);
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --container-w: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: "PingFang SC", "Helvetica Neue", "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        ul,
        ol {
            list-style-position: inside;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-head {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: -0.02em;
            margin-bottom: 8px;
        }

        .section-head p {
            color: var(--text-weak);
            font-size: 15px;
        }

        .section-head .bar {
            width: 48px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin: 14px auto 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            border: 2px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 6px 20px rgba(26, 109, 245, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(26, 109, 245, 0.45);
            color: #fff;
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.5);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(26, 109, 245, 0.4);
            outline-offset: 2px;
        }

        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary-dark);
            letter-spacing: 0.02em;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(16, 32, 58, 0.05);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            height: 76px;
            flex-wrap: nowrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--dark);
        }

        .brand-mark {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            box-shadow: 0 4px 14px rgba(26, 109, 245, 0.3);
        }

        .brand-text {
            letter-spacing: -0.02em;
        }

        .header-search {
            flex: 0 1 480px;
            margin: 0 16px;
        }

        .search-form {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 5px 5px 5px 16px;
            transition: var(--transition);
        }

        .search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(26, 109, 245, 0.1);
            background: #fff;
        }

        .search-icon {
            color: var(--text-muted);
            font-size: 14px;
            margin-right: 8px;
            flex-shrink: 0;
        }

        .search-form input {
            flex: 1;
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            padding: 8px 0;
            min-width: 0;
            color: var(--text);
        }

        .search-form input::placeholder {
            color: var(--text-muted);
        }

        .search-btn {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 9px 22px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .search-btn:hover {
            opacity: 0.9;
            transform: translateY(-1px);
        }

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

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-weak);
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
        }

        .mobile-search {
            display: none;
            padding: 12px 16px 8px;
        }

        .menu-toggle {
            display: none;
            background: var(--primary-light);
            border: none;
            border-radius: 10px;
            width: 42px;
            height: 42px;
            font-size: 18px;
            color: var(--primary);
            cursor: pointer;
            transition: var(--transition);
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .menu-toggle:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: var(--transition);
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb i {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.4);
        }

        .breadcrumb .current {
            color: #fff;
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 300px;
        }

        /* ===== 文章横幅 ===== */
        .article-hero {
            background:
                linear-gradient(135deg, rgba(11, 21, 38, 0.9) 0%, rgba(13, 79, 196, 0.7) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 80px 0 70px;
            position: relative;
            overflow: hidden;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 40px;
            background: linear-gradient(to top, var(--bg), transparent);
            pointer-events: none;
        }

        .article-hero-content {
            position: relative;
            max-width: 860px;
        }

        .article-hero .badge {
            background: rgba(255, 255, 255, 0.15);
            color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            margin-bottom: 18px;
        }

        .article-hero h1 {
            font-size: 38px;
            line-height: 1.35;
            color: #fff;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .meta-item i {
            color: var(--accent);
            font-size: 13px;
        }

        /* ===== 文章正文区域 ===== */
        .article-body {
            padding: 60px 0 70px;
            background: var(--bg);
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 320px;
            gap: 40px;
            align-items: start;
        }

        .article-main {
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            min-width: 0;
        }

        /* 文章正文内容排版 */
        .article-content {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text);
        }

        .article-content>p {
            margin-bottom: 20px;
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--dark);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
            letter-spacing: -0.01em;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin: 28px 0 12px;
        }

        .article-content h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--dark);
            margin: 20px 0 8px;
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 20px;
            padding-left: 24px;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 18px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            font-size: 15px;
            color: var(--text-weak);
            font-style: italic;
        }

        .article-content img {
            border-radius: var(--radius);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }

        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content a:hover {
            color: var(--primary-dark);
        }

        .article-content table {
            width: 100%;
            margin: 24px 0;
            border-collapse: collapse;
            font-size: 14px;
        }

        .article-content table th,
        .article-content table td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            text-align: left;
        }

        .article-content table th {
            background: var(--primary-light);
            color: var(--dark);
            font-weight: 600;
        }

        .article-content code {
            background: #f1f5f9;
            padding: 2px 8px;
            border-radius: 6px;
            font-family: "SFMono-Regular", Consolas, monospace;
            font-size: 0.9em;
            color: #e11d48;
        }

        .article-content pre {
            background: var(--dark);
            color: #e2e8f0;
            padding: 20px;
            border-radius: 12px;
            overflow-x: auto;
            margin: 24px 0;
            font-size: 14px;
            line-height: 1.7;
        }

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

        .article-tags {
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }

        .article-tags .tag-title {
            font-size: 13px;
            color: var(--text-muted);
            margin-right: 4px;
        }

        .tag-item {
            display: inline-block;
            padding: 5px 16px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 30px;
            font-size: 13px;
            color: var(--text-weak);
            transition: var(--transition);
        }

        .tag-item:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 96px;
        }

        .sidebar-card {
            background: var(--card);
            border-radius: var(--radius);
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .sidebar-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h3 i {
            color: var(--primary);
            font-size: 16px;
        }

        .sidebar-card h3::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--border);
        }

        .recent-list {
            list-style: none;
            padding: 0;
        }

        .recent-list li {
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
            transition: var(--transition);
        }

        .recent-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .recent-list a {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .recent-title {
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            line-height: 1.5;
            transition: var(--transition);
        }

        .recent-list a:hover .recent-title {
            color: var(--primary);
        }

        .recent-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        .sidebar-cat {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            background: var(--bg);
            border-radius: 12px;
            margin-bottom: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .sidebar-cat:last-child {
            margin-bottom: 0;
        }

        .sidebar-cat i {
            color: var(--primary);
            font-size: 16px;
        }

        .sidebar-cat:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-dark);
            transform: translateX(4px);
        }

        /* ===== 相关阅读 ===== */
        .related-section {
            padding: 70px 0;
            background: var(--card);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .related-card {
            display: flex;
            gap: 16px;
            background: var(--bg);
            border-radius: var(--radius);
            padding: 16px;
            border: 1px solid var(--border);
            transition: var(--transition);
            min-width: 0;
        }

        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary-light);
        }

        .related-cover {
            flex-shrink: 0;
            width: 120px;
            height: 90px;
            overflow: hidden;
            border-radius: 12px;
            background: var(--border);
        }

        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 12px;
            transition: transform 0.4s ease;
        }

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

        .related-info {
            min-width: 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .related-info .badge {
            align-self: flex-start;
            margin-bottom: 6px;
            font-size: 11px;
            padding: 3px 10px;
        }

        .related-info h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-info p {
            font-size: 13px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 70px 0;
            background: var(--dark);
            background-image:
                radial-gradient(circle at 20% 50%, rgba(54, 198, 240, 0.18), transparent 45%),
                radial-gradient(circle at 80% 30%, rgba(26, 109, 245, 0.2), transparent 45%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 16px;
            margin-bottom: 30px;
            line-height: 1.7;
        }

        .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 未找到 ===== */
        .not-found-section {
            padding: 120px 0;
            text-align: center;
        }

        .not-found-content {
            max-width: 520px;
            margin: 0 auto;
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .nf-icon {
            display: inline-flex;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 32px;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
        }

        .not-found-content h1 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .not-found-content p {
            color: var(--text-weak);
            margin-bottom: 28px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.65);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .brand-logo {
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
            max-width: 340px;
            margin-top: 10px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-col-link {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }

        .footer-col-link:hover {
            color: #fff;
            padding-left: 6px;
        }

        .footer-bottom {
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .header-search {
                flex-basis: 320px;
            }

            .article-layout {
                grid-template-columns: minmax(0, 1fr) 280px;
                gap: 28px;
            }

            .article-main {
                padding: 30px;
            }
        }

        @media (max-width: 900px) {
            .header-inner {
                height: auto;
                min-height: 68px;
                flex-wrap: wrap;
                padding: 12px 16px;
            }

            .header-search {
                order: 3;
                flex: 1 1 100%;
                margin: 10px 0 0;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: calc(100% + 1px);
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                padding: 14px 20px 20px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(16, 32, 58, 0.1);
            }

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

            .nav-link {
                padding: 14px 18px;
                border-radius: 12px;
                font-size: 15px;
            }

            .menu-toggle {
                display: flex;
                margin-left: auto;
            }

            .mobile-search {
                display: block;
            }

            .article-hero {
                padding: 60px 0 50px;
            }

            .article-hero h1 {
                font-size: 28px;
            }

            .article-layout {
                grid-template-columns: 1fr;
            }

            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

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

        @media (max-width: 768px) {
            .article-main {
                padding: 24px 20px;
            }

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

            .article-content h2 {
                font-size: 20px;
            }

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

            .related-cover {
                width: 100%;
                height: 140px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-section {
                padding: 60px 0;
            }

            .cta-inner h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .brand-text {
                font-size: 18px;
            }

            .brand-mark {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .article-hero {
                padding: 48px 0 40px;
            }

            .article-hero h1 {
                font-size: 24px;
            }

            .article-meta {
                gap: 12px;
                font-size: 12px;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

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

            .cta-btns {
                flex-direction: column;
                align-items: center;
            }

            .cta-btns .btn {
                width: 100%;
                justify-content: center;
            }

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

            .breadcrumb .current {
                max-width: 160px;
            }
        }

/* roulang page: category1 */
:root {
    --primary: #0a6df0;
    --primary-dark: #0857c4;
    --primary-light: #e8f1fe;
    --accent: #06b6a4;
    --accent-light: #e6faf7;
    --bg-light: #f4f7fb;
    --bg-white: #ffffff;
    --text-dark: #14213d;
    --text-body: #45506a;
    --text-light: #7c88a1;
    --border-color: #e5eaf2;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    --shadow-sm: 0 2px 8px rgba(20,33,61,0.06);
    --shadow-md: 0 8px 30px rgba(20,33,61,0.08);
    --shadow-lg: 0 20px 50px rgba(20,33,61,0.12);
    --transition: all 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text-body);
    background: var(--bg-light);
    line-height: 1.7;
    margin: 0;
    -webkit-font-smoothing: antialiased;
}
html { scroll-behavior: smooth; }
h1, h2, h3, h4, h5, h6 { font-family: inherit; line-height: 1.4; color: var(--text-dark); margin: 0 0 0.5em; }
p { margin: 0 0 1em; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; }
ul { margin: 0; padding: 0; }
input { font-family: inherit; }
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.grid-margin-x > .cell { margin-bottom: 24px; }

/* ===== Header & Nav ===== */
.site-header {
    background: #fff;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    min-height: 74px;
    flex-wrap: wrap;
}
.brand { flex-shrink: 0; }
.brand-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 12px;
    display: inline-flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px;
    box-shadow: 0 4px 14px rgba(10,109,240,0.3);
}
.brand-text { font-size: 20px; font-weight: 800; color: var(--text-dark); letter-spacing: 0.5px; }
.header-search { flex: 1; max-width: 520px; margin: 0 auto; }
.search-form {
    display: flex; align-items: center;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 40px;
    padding: 6px 6px 6px 16px;
    transition: var(--transition);
}
.search-form:focus-within {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(10,109,240,0.12);
}
.search-icon { color: var(--text-light); font-size: 14px; margin-right: 8px; }
.search-form input {
    flex: 1; border: none; background: transparent;
    font-size: 14px; color: var(--text-dark); outline: none; min-width: 0;
}
.search-btn {
    background: var(--primary); color: #fff; border: none;
    border-radius: 30px; padding: 8px 22px; font-size: 14px;
    font-weight: 600; cursor: pointer; transition: var(--transition); flex-shrink: 0;
}
.search-btn:hover { background: var(--primary-dark); }
.main-nav { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.nav-link {
    padding: 8px 16px; border-radius: 30px; font-size: 15px;
    font-weight: 500; color: var(--text-body); text-decoration: none; transition: var(--transition);
}
.nav-link:hover { color: var(--primary); background: var(--primary-light); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(10,109,240,0.25); }
.menu-toggle {
    display: none; background: none; border: none; font-size: 22px;
    color: var(--text-dark); cursor: pointer; padding: 8px;
}
.mobile-search { display: none; }

/* ===== Breadcrumb ===== */
.breadcrumb-wrap {
    background: #fff;
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
}
.breadcrumb { display: flex; align-items: center; gap: 8px; list-style: none; font-size: 13px; color: var(--text-light); }
.breadcrumb a { color: var(--text-light); text-decoration: none; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .current { color: var(--text-dark); font-weight: 600; }
.breadcrumb i { font-size: 12px; }

/* ===== Hero ===== */
.cat-hero {
    position: relative;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    padding: 110px 0;
    text-align: center;
}
.cat-hero::before {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(10,20,40,0.86), rgba(10,80,150,0.74));
}
.cat-hero .container { position: relative; z-index: 2; }
.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    color: #fff;
    padding: 6px 20px;
    border-radius: 40px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
}
.cat-hero h1 {
    color: #fff; font-size: 44px; font-weight: 800;
    margin: 22px 0 16px; line-height: 1.3;
}
.cat-hero .hero-desc {
    color: rgba(255,255,255,0.85);
    font-size: 17px;
    max-width: 680px;
    margin: 0 auto 34px;
    line-height: 1.8;
}
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 32px; border-radius: 50px; font-size: 15px;
    font-weight: 600; text-decoration: none; transition: var(--transition);
    cursor: pointer; border: none;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 24px rgba(10,109,240,0.35); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(10,109,240,0.4); }
.btn-outline { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.6); }
.btn-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; }

/* ===== Section Common ===== */
.section { padding: 90px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 50px; }
.section-tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    padding: 5px 16px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 14px;
}
.section-head h2 { font-size: 32px; font-weight: 800; margin-bottom: 12px; line-height: 1.4; }
.section-head p { font-size: 16px; color: var(--text-light); line-height: 1.8; }

/* ===== Feature ===== */
.feature-section { background: var(--bg-light); }
.feature-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
    height: 100%;
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(10,109,240,0.3);
}
.feature-icon {
    width: 64px; height: 64px; border-radius: 16px;
    background: var(--primary-light); color: var(--primary);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 24px; margin-bottom: 20px;
}
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.feature-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 0; }

/* ===== Resource List ===== */
.list-section { background: #fff; }
.resource-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
    display: block;
    text-decoration: none;
    color: inherit;
}
.resource-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}
.card-img { position: relative; height: 180px; overflow: hidden; background: #eef2f7; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.resource-card:hover .card-img img { transform: scale(1.05); }
.card-img::after {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.35), transparent);
}
.card-tag {
    position: absolute; left: 14px; top: 14px; z-index: 2;
    background: rgba(255,255,255,0.92);
    color: var(--primary);
    font-size: 12px; font-weight: 700;
    padding: 4px 12px; border-radius: 20px;
}
.card-body { padding: 22px; }
.card-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.card-body p { font-size: 13px; color: var(--text-light); line-height: 1.7; margin-bottom: 14px; }
.card-meta { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--text-light); }
.card-link-text { color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
.resource-card:hover .card-link-text { gap: 8px; }

/* ===== Stats ===== */
.stats-section {
    position: relative;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    padding: 100px 0;
}
.stats-section::before {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(10,60,120,0.92), rgba(10,30,60,0.95));
}
.stats-section .container { position: relative; z-index: 2; }
.stats-section .section-head h2 { color: #fff; }
.stats-section .section-head p { color: rgba(255,255,255,0.75); }
.stats-section .section-tag { background: rgba(255,255,255,0.15); color: #fff; }
.stat-item { text-align: center; padding: 20px 20px; }
.stat-number { font-size: 42px; font-weight: 800; color: #fff; line-height: 1.2; }
.stat-number .plus { color: var(--accent); }
.stat-label { color: rgba(255,255,255,0.75); font-size: 15px; margin-top: 10px; }
.stat-divider { width: 40px; height: 3px; background: var(--accent); border-radius: 3px; margin: 14px auto 0; }

/* ===== Hot List ===== */
.hot-section { background: var(--bg-light); }
.hot-item {
    display: flex; align-items: center; gap: 20px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 22px 24px;
    margin-bottom: 16px;
    transition: var(--transition);
}
.hot-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
    border-color: rgba(10,109,240,0.3);
}
.hot-rank { font-size: 26px; font-weight: 800; color: var(--primary); width: 50px; text-align: center; flex-shrink: 0; }
.hot-info { flex: 1; }
.hot-info h3 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.hot-info p { font-size: 13px; color: var(--text-light); margin-bottom: 0; }
.hot-meta { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.hot-tag { background: var(--primary-light); color: var(--primary); font-size: 12px; padding: 4px 12px; border-radius: 20px; font-weight: 600; }
.hot-score { color: #f59e0b; font-size: 14px; font-weight: 700; }

/* ===== FAQ ===== */
.faq-section { background: #fff; }
.faq-card {
    background: var(--bg-light);
    border-radius: var(--radius-md);
    padding: 28px;
    height: 100%;
    border: 1px solid transparent;
    transition: var(--transition);
}
.faq-card:hover { border-color: var(--border-color); box-shadow: var(--shadow-sm); }
.faq-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.faq-card h3 i { color: var(--primary); }
.faq-card p { font-size: 14px; color: var(--text-body); line-height: 1.8; margin-bottom: 0; }

/* ===== CTA ===== */
.cta-section {
    position: relative;
    background-image: url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
    padding: 90px 0;
    text-align: center;
}
.cta-section::before {
    content: "";
    position: absolute; inset: 0;
    background: rgba(10,30,60,0.85);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { color: #fff; font-size: 32px; font-weight: 800; margin-bottom: 16px; }
.cta-section p { color: rgba(255,255,255,0.85); font-size: 16px; max-width: 600px; margin: 0 auto 32px; }

/* ===== Footer ===== */
.site-footer {
    background: #0f1e38;
    color: rgba(255,255,255,0.7);
    padding: 70px 0 0;
}
.footer-grid {
    display: flex; gap: 40px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    flex-wrap: wrap;
}
.footer-brand { flex: 2; min-width: 260px; }
.footer-brand .brand-text { color: #fff; }
.footer-brand .brand-mark { background: linear-gradient(135deg, var(--primary), var(--accent)); }
.footer-desc { font-size: 14px; color: rgba(255,255,255,0.6); margin-top: 16px; line-height: 1.7; max-width: 340px; }
.footer-col { flex: 1; min-width: 140px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.footer-col-link { display: block; color: rgba(255,255,255,0.6); font-size: 14px; margin-bottom: 10px; text-decoration: none; }
.footer-col-link:hover { color: #fff; padding-left: 4px; }
.footer-bottom {
    display: flex; justify-content: space-between; align-items: center;
    gap: 16px; flex-wrap: wrap;
    padding: 22px 0;
    font-size: 13px;
    color: rgba(255,255,255,0.4);
}
.footer-bottom p { margin: 0; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .header-search { max-width: 360px; }
    .cat-hero h1 { font-size: 36px; }
    .section { padding: 70px 0; }
    .section-head h2 { font-size: 28px; }
}
@media (max-width: 768px) {
    .header-inner { padding: 14px 16px; gap: 12px; }
    .menu-toggle { display: block; margin-left: auto; }
    .header-search { display: none; }
    .main-nav {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 12px 0;
    }
    .main-nav.open { display: flex; }
    .nav-link { text-align: center; padding: 12px; }
    .mobile-search { display: block; margin-top: 12px; }
    .cat-hero { padding: 70px 0; }
    .cat-hero h1 { font-size: 28px; }
    .cat-hero .hero-desc { font-size: 15px; }
    .section { padding: 60px 0; }
    .section-head h2 { font-size: 24px; }
    .section-head { margin-bottom: 36px; }
    .hot-item { flex-direction: column; align-items: flex-start; gap: 10px; }
    .hot-meta { margin-top: 4px; }
    .footer-grid { flex-direction: column; gap: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .cat-hero h1 { font-size: 24px; }
    .cat-hero .hero-desc { font-size: 14px; }
    .btn { padding: 12px 22px; font-size: 14px; }
    .stat-number { font-size: 30px; }
    .hot-rank { font-size: 20px; width: 36px; }
    .card-body { padding: 18px; }
    .cta-section h2 { font-size: 26px; }
    .search-btn { padding: 8px 16px; }
}

/* roulang page: category2 */
:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #eff6ff;
    --accent: #f59e0b;
    --accent-light: #fef3c7;
    --bg-body: #f8fafc;
    --bg-white: #ffffff;
    --bg-soft: #f1f5f9;
    --text-main: #0f172a;
    --text-body: #334155;
    --text-weak: #64748b;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, .07);
    --shadow-lg: 0 20px 50px rgba(15, 23, 42, .10);
    --space-section: 90px;
    --space-section-sm: 56px;
    --transition: all .25s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg-body);
    color: var(--text-body);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

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

h1, h2, h3, h4, h5, h6 {
    color: var(--text-main);
    line-height: 1.3;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.site-header {
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 28px;
    min-height: 76px;
}

.brand {
    flex-shrink: 0;
}

.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.03em;
}

.brand-logo:hover {
    color: var(--text-main);
}

.brand-mark {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border-radius: 12px;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, .25);
}

.brand-text {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-search {
    flex: 1;
    max-width: 520px;
    margin: 0 auto;
}

.search-form {
    display: flex;
    align-items: center;
    background: var(--bg-soft);
    border: 1.5px solid var(--border);
    border-radius: 50px;
    padding: 0 8px 0 16px;
    transition: var(--transition);
}

.search-form:focus-within {
    border-color: var(--primary);
    background: var(--bg-white);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
}

.search-icon {
    color: var(--text-weak);
    font-size: .9rem;
}

.search-form input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 10px 12px;
    font-size: .92rem;
    color: var(--text-main);
    outline: none;
}

.search-form input::placeholder {
    color: var(--text-weak);
}

.search-btn {
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50px;
    padding: 8px 22px;
    font-size: .88rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.search-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.search-btn:focus-visible {
    outline: 3px solid rgba(37, 99, 235, .4);
    outline-offset: 2px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.nav-link {
    padding: 8px 16px;
    border-radius: 50px;
    font-size: .93rem;
    font-weight: 500;
    color: var(--text-body);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary);
    background: var(--primary-light);
}

.nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
    font-weight: 600;
}

.mobile-search {
    display: none;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--text-main);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
}

.menu-toggle:hover {
    background: var(--bg-soft);
}

.page-banner {
    position: relative;
    background: linear-gradient(135deg, rgba(15, 23, 42, .85), rgba(30, 64, 175, .78)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    padding: 90px 0 70px;
    color: #fff;
    text-align: center;
}

.page-banner h1 {
    color: #fff;
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    margin-bottom: 14px;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.page-banner .banner-sub {
    font-size: 1.1rem;
    max-width: 640px;
    margin: 0 auto 26px;
    color: rgba(255, 255, 255, .88);
    line-height: 1.7;
}

.banner-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, .15);
    border: 1px solid rgba(255, 255, 255, .25);
    border-radius: 50px;
    padding: 7px 18px;
    font-size: .86rem;
    color: rgba(255, 255, 255, .95);
    margin-bottom: 22px;
    backdrop-filter: blur(6px);
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 8px;
    font-size: .88rem;
    color: rgba(255, 255, 255, .7);
    margin-top: 20px;
}

.breadcrumb a {
    color: rgba(255, 255, 255, .85);
}

.breadcrumb a:hover {
    color: #fff;
}

.section {
    padding: var(--space-section) 0;
}

.section-alt {
    background: var(--bg-white);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-head {
    text-align: center;
    margin-bottom: 56px;
}

.section-head .section-tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: .82rem;
    font-weight: 600;
    padding: 6px 18px;
    border-radius: 50px;
    margin-bottom: 14px;
}

.section-head h2 {
    font-size: clamp(1.7rem, 3vw, 2.4rem);
    margin-bottom: 12px;
}

.section-head p {
    max-width: 600px;
    margin: 0 auto;
    color: var(--text-weak);
    font-size: 1rem;
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-top: 10px;
}

.guide-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.guide-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(37, 99, 235, .25);
}

.guide-card .card-img {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.guide-card .card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}

.guide-card:hover .card-img img {
    transform: scale(1.05);
}

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

.card-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.card-cat {
    display: inline-block;
    background: var(--accent-light);
    color: #b45309;
    font-size: .76rem;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 50px;
}

.card-date {
    font-size: .8rem;
    color: var(--text-weak);
}

.guide-card h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    line-height: 1.45;
}

.guide-card h3 a {
    color: var(--text-main);
}

.guide-card h3 a:hover {
    color: var(--primary);
}

.guide-card .card-text {
    font-size: .92rem;
    color: var(--text-weak);
    margin-bottom: 20px;
    flex: 1;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: .88rem;
    font-weight: 600;
    color: var(--primary);
}

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

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

.tips-section {
    background: linear-gradient(135deg, #f0f9ff, #eff6ff);
    position: relative;
    overflow: hidden;
}

.tips-layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 56px;
    align-items: center;
}

.tips-content h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: 18px;
}

.tips-content .lead {
    font-size: 1.04rem;
    margin-bottom: 28px;
    color: var(--text-body);
}

.tips-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.tips-list li {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    background: var(--bg-white);
    border-radius: var(--radius-sm);
    padding: 18px 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.tips-list li .tip-icon {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: .95rem;
    flex-shrink: 0;
}

.tip-icon.blue {
    background: var(--primary-light);
    color: var(--primary);
}

.tip-icon.orange {
    background: var(--accent-light);
    color: #d97706;
}

.tip-icon.green {
    background: #ecfdf5;
    color: #059669;
}

.tips-list li .tip-text h4 {
    font-size: .95rem;
    margin-bottom: 4px;
}

.tips-list li .tip-text p {
    font-size: .88rem;
    color: var(--text-weak);
}

.tips-visual {
    align-self: center;
}

.tips-visual img {
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

.stats-section {
    padding: 70px 0;
    background: linear-gradient(135deg, var(--primary-dark), #1e3a8a);
    color: #fff;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-item .stat-num {
    font-size: 2.6rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 6px;
    letter-spacing: -0.02em;
}

.stat-item .stat-label {
    font-size: .92rem;
    color: rgba(255, 255, 255, .75);
}

.steps-section .steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.step-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px 24px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: var(--transition);
}

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

.step-card:hover::before {
    opacity: 1;
}

.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    font-size: 1.2rem;
    font-weight: 800;
    margin-bottom: 18px;
}

.step-card h4 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.step-card p {
    font-size: .88rem;
    color: var(--text-weak);
}

.faq-section .faq-list {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(37, 99, 235, .3);
}

.faq-item summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
    list-style: none;
    transition: var(--transition);
}

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

.faq-item summary .faq-icon {
    font-size: .85rem;
    color: var(--primary);
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    border-radius: 50%;
    flex-shrink: 0;
    transition: transform .3s ease;
}

.faq-item[open] summary .faq-icon {
    transform: rotate(45deg);
}

.faq-item .faq-answer {
    padding: 0 24px 22px;
    font-size: .93rem;
    color: var(--text-weak);
}

.cta-section {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    padding: 70px 0;
    text-align: center;
}

.cta-section h2 {
    color: #fff;
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    margin-bottom: 14px;
}

.cta-section p {
    color: rgba(255, 255, 255, .85);
    max-width: 540px;
    margin: 0 auto 30px;
    font-size: 1rem;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: none;
    border-radius: 50px;
    padding: 12px 32px;
    font-size: .95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-light:hover {
    background: var(--accent-light);
    color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, .15);
}

.btn-outline-light {
    background: rgba(255, 255, 255, .1);
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, .4);
}

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

.site-footer {
    background: #0f172a;
    color: rgba(255, 255, 255, .7);
    padding: 70px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 46px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.footer-brand .brand-logo {
    color: #fff;
    font-size: 1.3rem;
    margin-bottom: 16px;
}

.footer-brand .brand-mark {
    background: linear-gradient(135deg, var(--primary), var(--accent));
}

.footer-brand .brand-text {
    background: linear-gradient(135deg, #93c5fd, #fbbf24);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-desc {
    font-size: .92rem;
    line-height: 1.7;
    max-width: 320px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col h4 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.footer-col-link {
    color: rgba(255, 255, 255, .7);
    font-size: .9rem;
    transition: var(--transition);
    margin-bottom: 4px;
}

.footer-col-link:hover {
    color: #fff;
    padding-left: 4px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 26px 0;
    font-size: .85rem;
    color: rgba(255, 255, 255, .45);
    flex-wrap: wrap;
}

@media (max-width: 1024px) {
    .header-inner {
        gap: 16px;
    }

    .guide-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .tips-visual {
        order: -1;
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
        min-height: 64px;
    }

    .header-search {
        order: 3;
        max-width: 100%;
        flex-basis: 100%;
        margin: 8px 0 14px;
    }

    .main-nav {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        background: var(--bg-white);
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        padding: 16px 24px;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--border);
        gap: 6px;
        border-radius: 0 0 16px 16px;
    }

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

    .main-nav .nav-link {
        width: 100%;
        padding: 12px 16px;
        font-size: 1rem;
    }

    .mobile-search {
        display: block;
        width: 100%;
        margin-top: 10px;
    }

    .menu-toggle {
        display: block;
        margin-left: auto;
    }

    .page-banner {
        padding: 60px 0 44px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

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

    .section {
        padding: var(--space-section-sm) 0;
    }
}

@media (max-width: 520px) {
    .container {
        padding: 0 18px;
    }

    .guide-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .steps-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }

    .stat-item .stat-num {
        font-size: 1.8rem;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .header-search {
        display: none;
    }

    .search-btn {
        padding: 8px 16px;
    }
}