/* roulang page: index */
/* ============ 设计变量 ============ */
:root {
    --primary: #1B5A9A;
    --primary-dark: #134A7D;
    --primary-light: #E8F1F9;
    --accent: #F2A33C;
    --accent-hover: #D98A26;
    --bg: #F5F8FC;
    --card-bg: #FFFFFF;
    --text: #1B2A38;
    --text-secondary: #5C6B7A;
    --text-muted: #9AA8B8;
    --border: #E2EAF2;
    --success: #1FA25C;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-card: 0 2px 8px rgba(16,36,61,0.06);
    --shadow-hover: 0 10px 24px rgba(16,36,61,0.12);
    --shadow-btn: 0 4px 10px rgba(27,90,154,0.2);
    --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --container-width: 1200px;
    --section-padding: 80px;
    --gutter: 24px;
}
/* ============ Reset / Base ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-family);
    background: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-dark); }
ul, ol, li { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text); }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }

/* ============ Container ============ */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--gutter);
}
.grid-x { margin-left: -12px; margin-right: -12px; }
.grid-x > .cell { padding-left: 12px; padding-right: 12px; }

/* ============ Section 通用 ============ */
.section { padding: var(--section-padding) 0; }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 36px; flex-wrap: wrap; gap: 16px; }
.section-header h2 { position: relative; padding-left: 18px; font-size: 30px; line-height: 1.3; }
.section-header h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 26px;
    background: var(--primary);
    border-radius: 2px;
}
.section-desc { color: var(--text-secondary); font-size: 15px; margin-top: 8px; max-width: 640px; }
.more-link { font-size: 14px; color: var(--primary); border-bottom: 1px dashed rgba(27,90,154,.4); padding-bottom: 2px; transition: all .2s; }
.more-link:hover { border-bottom-style: solid; color: var(--primary-dark); }

/* ============ Button ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 26px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.2;
    border: 0;
    transition: all .2s ease;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
}
.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 10px rgba(242,163,60,.35);
}
.btn-primary:hover { background: var(--accent-hover); color: #fff; box-shadow: 0 6px 18px rgba(217,138,38,.4); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(1px); box-shadow: 0 2px 6px rgba(217,138,38,.3); }
.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}
.btn-outline:hover { background: var(--primary-light); color: var(--primary-dark); }
.btn-light {
    background: #fff;
    color: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(19,74,125,.2);
}
.btn-light:hover { background: #f0f5fb; color: var(--primary-dark); transform: translateY(-1px); }
.btn-sm { padding: 9px 18px; font-size: 13px; border-radius: 8px; }
.btn-link { color: var(--primary); font-size: 14px; text-decoration: underline; text-decoration-style: dotted; text-underline-offset: 3px; }
.btn-link:hover { text-decoration-style: solid; color: var(--primary-dark); }
.btn:focus-visible, .accordion-title:focus-visible, a:focus-visible {
    outline: 3px solid rgba(27,90,154,.35);
    outline-offset: 2px;
}

/* ============ Header / Nav ============ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,.94);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--border);
    transition: box-shadow .3s;
}
.site-header.scrolled { box-shadow: 0 4px 20px rgba(16,36,61,.08); }
.header-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -1px;
    box-shadow: 0 4px 12px rgba(27,90,154,.25);
}
.logo-text { font-size: 19px; font-weight: 700; color: var(--text); letter-spacing: .5px; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav ul { display: flex; align-items: center; gap: 4px; margin: 0; }
.main-nav ul li { margin: 0; }
.main-nav ul li a {
    display: block;
    padding: 8px 14px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    border-radius: 6px;
    transition: all .2s;
    position: relative;
}
.main-nav ul li a:hover { color: var(--primary); background: var(--primary-light); }
.main-nav ul li a.active { color: var(--primary); font-weight: 600; }
.main-nav ul li a.active::after {
    content: "";
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    border-radius: 2px;
    background: var(--primary);
}
.header-download { margin-left: 16px; }
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text);
    padding: 6px 8px;
}
.mobile-menu {
    display: none;
    background: #fff;
    border-top: 1px solid var(--border);
    padding: 12px 0 20px;
}
.mobile-menu ul { margin: 0; padding: 0; }
.mobile-menu li { border-bottom: 1px solid #f0f4f9; }
.mobile-menu li a {
    display: block;
    padding: 14px 20px;
    color: var(--text);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.4;
    border-left: 3px solid transparent;
}
.mobile-menu li a:hover { background: var(--primary-light); color: var(--primary); }
.mobile-menu li a.active { border-left-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.mobile-menu .mobile-menu-cta { padding: 16px 20px; }

/* ============ Hero ============ */
.hero {
    background:
        url('/assets/images/backpic/back-1.png') center top / cover no-repeat,
        linear-gradient(180deg, #EAF2F9 0%, #F5F8FC 100%);
    padding: 72px 0 64px;
    position: relative;
    border-bottom: 1px solid var(--border);
}
.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,.3);
    pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-grid { display: flex; align-items: center; gap: 48px; flex-wrap: wrap; }
.hero-text { flex: 0 0 55%; max-width: 55%; }
.hero-visual { flex: 0 0 45%; max-width: 45%; position: relative; }
.hero h1 { font-size: 40px; line-height: 1.25; margin-bottom: 18px; color: var(--text); }
.hero-sub { font-size: 17px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 28px; max-width: 520px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 32px; }
.hero-trust { display: flex; gap: 24px; flex-wrap: wrap; }
.hero-trust span {
    display: flex;
    flex-direction: column;
    padding: 12px 16px;
    background: rgba(255,255,255,.7);
    border: 1px solid var(--border);
    border-radius: 10px;
    min-width: 110px;
}
.hero-trust strong { font-size: 20px; color: var(--primary); font-weight: 700; }
.hero-trust small { font-size: 12px; color: var(--text-secondary); }
.mockup {
    background: #fff;
    border-radius: 24px;
    border: 1px solid var(--border);
    box-shadow: 0 20px 50px rgba(16,36,61,.14);
    padding: 12px;
    position: relative;
}
.mockup::before {
    content: "";
    display: block;
    width: 80px;
    height: 6px;
    background: var(--border);
    border-radius: 4px;
    margin: 0 auto 12px;
}
.mockup img { border-radius: 16px; width: 100%; }
.mockup-float {
    position: absolute;
    bottom: -24px;
    left: -16px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(16,36,61,.12);
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text);
}
.mockup-float i { color: var(--success); font-size: 18px; }

/* ============ 功能亮点 / Orbit ============ */
.features { background: var(--bg); position: relative; overflow: hidden; }
.features .orbit { max-width: 1100px; margin: 0 auto; }
.feature-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border);
    transition: box-shadow .3s, transform .3s;
    height: 100%;
}
.feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.feature-card img { border-radius: var(--radius-sm); width: 100%; height: 200px; object-fit: cover; margin-bottom: 16px; }
.feature-card h3 { font-size: 18px; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.orbit-wrapper { position: relative; }
.orbit-controls button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #fff;
    border: 1px solid var(--border);
    box-shadow: 0 4px 12px rgba(16,36,61,.1);
    color: var(--primary);
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: all .2s;
}
.orbit-controls button:hover { background: var(--primary); color: #fff; }
.orbit-previous { left: -12px; }
.orbit-next { right: -12px; }
.orbit-bullets {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}
.orbit-bullets button {
    width: 8px;
    height: 8px;
    border-radius: 4px;
    border: 0;
    background: #c6d4e0;
    padding: 0;
    transition: all .3s;
    cursor: pointer;
}
.orbit-bullets button.is-active { width: 22px; background: var(--primary); }
.orbit-bullets button:hover { background: var(--primary); }

/* ============ 系统要求 ============ */
.system-req { background: #fff; }
.req-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 28px;
    background: var(--card-bg);
    box-shadow: var(--shadow-card);
    height: 100%;
    position: relative;
    transition: box-shadow .3s, transform .3s;
}
.req-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.req-card.ios-card { border-bottom: 3px solid var(--primary); }
.req-card.android-card { border-bottom: 3px solid var(--success); }
.req-header { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.req-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
    background: var(--primary);
}
.req-icon.android { background: var(--success); }
.req-header h3 { font-size: 18px; margin: 0; }
.req-list { margin: 0 0 10px; }
.req-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #f0f4f9;
    font-size: 14px;
}
.req-list li:last-child { border-bottom: none; }
.req-list li span { color: var(--text-secondary); }
.req-list li strong { color: var(--text); font-weight: 600; }
.req-card .btn-link { margin-top: 12px; display: inline-block; }

/* ============ 评价墙 ============ */
.testimonials { background: var(--bg); }
.testimonial-card {
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border);
    padding: 24px;
    height: 100%;
    transition: box-shadow .3s, transform .3s;
}
.testimonial-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.testimonial-stars { display: flex; gap: 2px; color: var(--accent); font-size: 15px; margin-bottom: 12px; }
.testimonial-stars i { font-size: 14px; }
.testimonial-summary { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 18px; min-height: 66px; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 600;
    flex-shrink: 0;
}
.testimonial-author .name { font-size: 14px; font-weight: 600; color: var(--text); display: flex; align-items: center; gap: 4px; }
.testimonial-author .source { font-size: 12px; color: var(--text-muted); }
.verified-badge { color: var(--primary); font-size: 13px; }

/* ============ 资讯列表 ============ */
.news { background: #fff; }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: box-shadow .3s, transform .3s;
}
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.news-card .news-thumb { display: block; width: 100%; height: 160px; overflow: hidden; }
.news-card .news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.news-card:hover .news-thumb img { transform: scale(1.05); }
.news-body { padding: 20px; }
.news-body .tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    padding: 2px 10px;
    border-radius: 999px;
    margin-bottom: 10px;
    font-weight: 500;
}
.news-body h3 { font-size: 16px; line-height: 1.5; margin-bottom: 8px; }
.news-body h3 a { color: var(--text); }
.news-body h3 a:hover { color: var(--primary); }
.news-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 12px; }
.news-body time { font-size: 12px; color: var(--text-muted); }
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-size: 15px;
    background: #fafcfe;
}

/* ============ FAQ ============ */
.faq { background: var(--bg); }
.accordion {
    max-width: 760px;
    margin: 0 auto;
    background: #f0f6fc;
    border-radius: 16px;
    padding: 0;
}
.accordion-item {
    background: transparent;
    border-bottom: 1px solid #dfe8f0;
    margin: 0;
}
.accordion-item:last-child { border-bottom: none; }
.accordion-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    background: transparent;
    position: relative;
    transition: color .2s;
}
.accordion-title::after {
    content: "+";
    font-size: 22px;
    font-weight: 300;
    color: var(--primary);
    transition: transform .2s;
    line-height: 1;
}
.accordion-item.is-active > .accordion-title::after { transform: rotate(45deg); }
.accordion-title:hover { color: var(--primary); }
.accordion-content { padding: 0 24px 18px; font-size: 14px; color: var(--text-secondary); line-height: 1.7; background: transparent; }
.accordion-content p { color: var(--text-secondary); }
ul.accordion .accordion-title { border-bottom: none; }

/* ============ 最终 CTA ============ */
.final-cta { padding: 64px 0; }
.cta-box {
    background: var(--primary-dark);
    border-radius: 20px;
    padding: 56px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-box::before {
    content: "";
    position: absolute;
    top: -60px;
    right: -60px;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: rgba(255,255,255,.06);
}
.cta-box::after {
    content: "";
    position: absolute;
    bottom: -80px;
    left: -80px;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: rgba(255,255,255,.04);
}
.cta-box h2 { color: #fff; font-size: 30px; margin-bottom: 14px; position: relative; z-index: 2; }
.cta-box p { color: rgba(255,255,255,.85); font-size: 16px; max-width: 640px; margin: 0 auto 30px; line-height: 1.7; position: relative; z-index: 2; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; position: relative; z-index: 2; }
.cta-note { margin-top: 18px; font-size: 13px; color: rgba(255,255,255,.55); position: relative; z-index: 2; }

/* ============ 页脚 ============ */
.site-footer { background: #F0F4F9; border-top: 1px solid var(--border); padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand .footer-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; max-width: 280px; }
.footer-col h4 { font-size: 15px; font-weight: 600; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: var(--text-secondary); }
.footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
.footer-contact li { display: flex; gap: 10px; align-items: center; font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; }
.footer-contact li i { color: var(--primary); width: 16px; }
.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary); }

/* ============ 响应式 ============ */
@media screen and (max-width: 1023px) {
    :root { --section-padding: 56px; }
    .hero-grid { flex-direction: column-reverse; }
    .hero-text, .hero-visual { flex: 0 0 100%; max-width: 100%; }
    .hero { padding: 56px 0 48px; }
    .hero h1 { font-size: 32px; }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .main-nav {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--border);
        padding: 12px 0;
        flex-direction: column;
        align-items: stretch;
        box-shadow: 0 12px 24px rgba(16,36,61,.08);
    }
    .main-nav.open { display: flex; }
    .main-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
    .main-nav ul li a { padding: 14px 20px; border-left: 3px solid transparent; }
    .main-nav ul li a.active::after { display: none; }
    .main-nav ul li a.active { border-left-color: var(--primary); background: var(--primary-light); }
    .header-download { display: none; }
    .mobile-toggle { display: block; }
}

@media screen and (max-width: 639px) {
    :root { --section-padding: 48px; }
    body { font-size: 15px; }
    .container { padding: 0 16px; }
    .hero h1 { font-size: 28px; line-height: 1.3; }
    .hero-sub { font-size: 15px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { width: 100%; }
    .hero-trust { gap: 10px; }
    .hero-trust span { min-width: calc(33% - 7px); padding: 10px 8px; text-align: center; }
    .hero-trust strong { font-size: 17px; }
    .hero-trust small { font-size: 11px; }
    .mockup-float { display: none; }
    .news-grid { grid-template-columns: 1fr; }
    .section-header h2 { font-size: 24px; }
    .section-header { margin-bottom: 24px; }
    .accordion-title { padding: 16px 16px; font-size: 14px; }
    .accordion-content { padding: 0 16px 14px; }
    .cta-box { padding: 40px 24px; }
    .cta-box h2 { font-size: 24px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { font-size: 12px; }
    .footer-contact li { font-size: 13px; }
}

/* roulang page: category1 */
:root {
            --primary: #1B5A9A;
            --primary-dark: #134A7D;
            --primary-light: #E8F1F9;
            --accent: #F2A33C;
            --accent-dark: #D98A26;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --text: #1B2A38;
            --text-secondary: #5C6B7A;
            --text-muted: #9AA8B8;
            --border: #E2EAF2;
            --success: #1FA25C;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow: 0 2px 8px rgba(16, 36, 61, 0.06);
            --shadow-lg: 0 10px 24px rgba(16, 36, 61, 0.12);
            --section-pad: 80px;
            --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            position: relative;
            padding-left: 16px;
            margin-bottom: 16px;
        }

        .section-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--primary);
            border-radius: 4px;
        }

        .section-sub {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 40px;
            max-width: 680px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(6px);
            border-bottom: 1px solid rgba(226, 234, 242, 0.8);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(16, 36, 61, 0.08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 800;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(27, 90, 154, 0.25);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
        }

        .main-nav ul {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 28px;
            margin: 0;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            padding: 6px 2px;
            position: relative;
            transition: color 0.2s ease;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
            opacity: 0;
            transform: scaleX(0.4);
            transition: all 0.25s ease;
        }

        .main-nav a:hover {
            color: var(--primary);
        }

        .main-nav a:hover::after {
            opacity: 0.5;
            transform: scaleX(0.8);
        }

        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .main-nav a.active::after {
            opacity: 1;
            transform: scaleX(1);
        }

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

        .btn-download {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: 10px;
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            box-shadow: 0 4px 10px rgba(242, 163, 60, 0.3);
            text-decoration: none;
        }

        .btn-download:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(242, 163, 60, 0.4);
        }

        .btn-download:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(242, 163, 60, 0.3);
        }

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

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
        }

        /* 移动端抽屉菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            right: -100%;
            width: 280px;
            height: 100vh;
            background: #fff;
            z-index: 200;
            padding: 24px 0;
            box-shadow: -4px 0 20px rgba(16, 36, 61, 0.1);
            transition: right 0.3s ease;
        }

        .mobile-menu.open {
            right: 0;
            display: block;
        }

        .mobile-menu ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .mobile-menu ul li a {
            display: block;
            padding: 14px 24px;
            font-size: 15px;
            color: var(--text);
            border-bottom: 1px solid var(--border);
            text-decoration: none;
            position: relative;
        }

        .mobile-menu ul li a.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
        }

        .mobile-menu ul li a.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            width: 4px;
            height: 100%;
            background: var(--primary);
        }

        .mobile-menu .menu-cta {
            padding: 24px;
        }

        .mobile-menu .menu-close {
            position: absolute;
            top: 16px;
            right: 16px;
            background: none;
            border: none;
            font-size: 20px;
            color: var(--text-secondary);
            cursor: pointer;
        }

        .menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.4);
            z-index: 150;
        }

        .menu-overlay.show {
            display: block;
        }

        /* ===== 分类页 Banner ===== */
        .category-banner {
            background: linear-gradient(180deg, #EAF2F9, #F5F8FC);
            padding: 64px 0 48px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }

        .category-banner::before {
            content: "";
            position: absolute;
            top: -40px;
            right: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(27, 90, 154, 0.05);
        }

        .category-banner::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: 30%;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(242, 163, 60, 0.06);
        }

        .banner-inner {
            display: flex;
            align-items: center;
            gap: 40px;
            position: relative;
            z-index: 2;
        }

        .banner-left {
            flex: 1 1 60%;
        }

        .banner-right {
            flex: 1 1 40%;
            position: relative;
        }

        .banner-title {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text);
            margin-bottom: 16px;
        }

        .banner-title span {
            color: var(--primary);
        }

        .banner-sub {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 24px;
            max-width: 520px;
        }

        .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }

        .banner-tag {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            box-shadow: var(--shadow);
        }

        .banner-stats {
            display: flex;
            gap: 32px;
            margin-top: 24px;
        }

        .stat-item {
            display: flex;
            flex-direction: column;
        }

        .stat-value {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

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

        .banner-visual {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 12px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
            position: relative;
        }

        .banner-visual img {
            border-radius: 12px;
            width: 100%;
            object-fit: cover;
            aspect-ratio: 16/10;
        }

        .banner-visual-badge {
            position: absolute;
            bottom: 24px;
            left: 24px;
            background: rgba(27, 90, 154, 0.92);
            color: #fff;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            backdrop-filter: blur(4px);
        }

        /* ===== 主体区 ===== */
        .category-main {
            padding: var(--section-pad) 0 60px;
        }

        .main-grid {
            display: flex;
            gap: 32px;
            align-items: flex-start;
        }

        .content-main {
            flex: 1 1 66%;
            min-width: 0;
        }

        .sidebar {
            flex: 0 0 32%;
            min-width: 0;
            position: sticky;
            top: 90px;
            max-height: calc(100vh - 120px);
            overflow-y: auto;
            scrollbar-width: none;
        }

        .sidebar::-webkit-scrollbar {
            display: none;
        }

        /* 内容卡片通用 */
        .info-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 32px;
            box-shadow: var(--shadow);
            margin-bottom: 32px;
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }

        .info-card:hover {
            box-shadow: var(--shadow-lg);
        }

        .info-card h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
        }

        .info-card p {
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        /* 图文展示块 */
        .media-block {
            display: flex;
            gap: 28px;
            align-items: center;
            padding: 24px 0;
        }

        .media-block img {
            width: 45%;
            border-radius: var(--radius-md);
            object-fit: cover;
            aspect-ratio: 4/3;
            box-shadow: var(--shadow);
        }

        .media-block .media-text {
            flex: 1;
        }

        .media-block h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text);
        }

        .media-block ul {
            list-style: none;
            margin: 12px 0 0;
        }

        .media-block ul li {
            padding: 4px 0 4px 24px;
            position: relative;
            color: var(--text-secondary);
            font-size: 14px;
        }

        .media-block ul li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--success);
            font-weight: 700;
        }

        /* 项目卡片网格 */
        .sport-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin: 24px 0;
        }

        .sport-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all 0.3s ease;
            cursor: default;
        }

        .sport-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .sport-card .sport-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            margin-bottom: 12px;
        }

        .sport-card h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text);
        }

        .sport-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* 资讯形态列表 */
        .format-list {
            list-style: none;
            margin: 0;
        }

        .format-list li {
            display: flex;
            gap: 16px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
            align-items: flex-start;
        }

        .format-list li:last-child {
            border-bottom: none;
        }

        .format-list .format-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            flex-shrink: 0;
        }

        .format-list .format-content h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 2px;
            color: var(--text);
        }

        .format-list .format-content p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* 优势列表 */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .advantage-item {
            padding: 18px;
            border-radius: var(--radius-sm);
            background: var(--bg);
            border-left: 3px solid var(--accent);
            transition: all 0.3s ease;
        }

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

        .advantage-item h5 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .advantage-item p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* ===== 侧栏组件 ===== */
        .sidebar-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 24px;
            box-shadow: var(--shadow);
        }

        .sidebar-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
            position: relative;
        }

        .sidebar-card h3::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -1px;
            width: 40px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .sidebar-nav {
            list-style: none;
            margin: 0;
        }

        .sidebar-nav li a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            font-size: 14px;
            color: var(--text-secondary);
            border-bottom: 1px dashed var(--border);
            transition: all 0.2s ease;
            text-decoration: none;
        }

        .sidebar-nav li a:hover {
            color: var(--primary);
            padding-left: 6px;
        }

        .sidebar-nav li a i {
            font-size: 12px;
            color: var(--text-muted);
        }

        .sidebar-nav li:last-child a {
            border-bottom: none;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud a {
            font-size: 13px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 12px;
            border-radius: 999px;
            text-decoration: none;
            transition: all 0.25s ease;
            border: 1px solid transparent;
        }

        .tag-cloud a:hover {
            background: #fff;
            border-color: var(--primary);
        }

        .side-recommend {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            align-items: center;
            text-decoration: none;
        }

        .side-recommend:last-child {
            border-bottom: none;
        }

        .side-recommend img {
            width: 64px;
            height: 48px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .side-recommend .rec-text {
            font-size: 14px;
            color: var(--text);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.2s ease;
        }

        .side-recommend:hover .rec-text {
            color: var(--primary);
        }

        /* ===== 数据统计条 ===== */
        .stat-band {
            background: var(--primary-dark);
            padding: 56px 0;
            color: #fff;
        }

        .stat-band .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .stat-band .stat-item-dark .num {
            font-size: 36px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .stat-band .stat-item-dark .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 4px;
        }

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

        .faq-wrap {
            max-width: 800px;
            background: #F0F6FC;
            border-radius: 16px;
            padding: 8px 24px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 18px 0;
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: color 0.2s ease;
            padding: 4px 0;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-family);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            color: var(--primary);
            transition: transform 0.3s ease;
            font-size: 18px;
            flex-shrink: 0;
            margin-left: 16px;
        }

        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease, opacity 0.3s ease;
            padding: 0;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            opacity: 0;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 8px 0 12px;
            opacity: 1;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 0 0 var(--section-pad);
        }

        .cta-box {
            background: var(--primary-dark);
            border-radius: 20px;
            padding: 56px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-box p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

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

        .cta-note {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 20px;
            display: block;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #F0F4F9;
            border-top: 1px solid var(--border);
            padding: 56px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 16px;
            padding-bottom: 8px;
            position: relative;
        }

        .footer-col h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

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

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

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-contact li {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact li i {
            color: var(--primary);
            width: 16px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: none;
        }

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

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: 10px;
            text-decoration: none;
            transition: all 0.25s ease;
            cursor: pointer;
            border: none;
            font-family: var(--font-family);
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 10px rgba(242, 163, 60, 0.3);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(242, 163, 60, 0.4);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(242, 163, 60, 0.3);
        }

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            box-shadow: none;
        }

        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

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

        .btn-white-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.7);
        }

        .btn-white-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border-color: #fff;
        }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 1023px) {
            .main-nav {
                display: none;
            }

            .nav-toggle {
                display: block;
            }

            .header-inner .btn-download {
                display: none;
            }

            .mobile-menu {
                display: block;
            }

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

            .media-block {
                flex-direction: column;
                align-items: flex-start;
            }

            .media-block img {
                width: 100%;
            }

            .category-main .main-grid {
                flex-direction: column;
            }

            .sidebar {
                position: static;
                max-height: none;
                width: 100%;
                flex: none;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .sidebar-card {
                margin-bottom: 0;
            }
        }

        @media screen and (max-width: 639px) {
            :root {
                --section-pad: 48px;
            }

            .container {
                padding: 0 16px;
            }

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

            .category-banner {
                padding: 40px 0 32px;
            }

            .banner-inner {
                flex-direction: column;
                gap: 24px;
            }

            .banner-title {
                font-size: 28px;
            }

            .banner-sub {
                font-size: 15px;
            }

            .banner-stats {
                gap: 20px;
                flex-wrap: wrap;
            }

            .stat-value {
                font-size: 22px;
            }

            .sport-grid,
            .advantage-grid {
                grid-template-columns: 1fr;
            }

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

            .sidebar-card {
                margin-bottom: 20px;
            }

            .stat-band .stat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px 16px;
            }

            .stat-band .stat-item-dark .num {
                font-size: 28px;
            }

            .cta-box {
                padding: 40px 20px;
            }

            .cta-box h2 {
                font-size: 22px;
            }

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

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

            .banner-visual {
                margin-top: 8px;
            }

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

/* roulang page: article */
:root {
            --primary: #1B5A9A;
            --primary-dark: #134A7D;
            --primary-light: #E8F1F9;
            --accent: #F2A33C;
            --accent-hover: #D98A26;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --text: #1B2A38;
            --text-secondary: #5C6B7A;
            --text-muted: #9AA8B8;
            --border: #E2EAF2;
            --success: #1FA25C;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(16,36,61,0.06);
            --shadow-md: 0 10px 24px rgba(16,36,61,0.12);
            --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
        }

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

        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: var(--accent-hover);
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 32px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .main-nav ul {
            display: flex;
            gap: 28px;
            margin: 0;
        }

        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 10px 0;
            position: relative;
            transition: color .2s;
        }

        .main-nav a:hover {
            color: var(--primary);
        }

        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 3px;
            background: var(--primary);
            border-radius: 3px 3px 0 0;
        }

        .header-cta {
            flex-shrink: 0;
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border: none;
            background: transparent;
        }

        .mobile-toggle span {
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all .3s ease;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            border: 1.5px solid transparent;
            cursor: pointer;
            transition: all .2s ease;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 10px rgba(242, 163, 60, 0.25);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            color: #fff;
            box-shadow: 0 6px 16px rgba(242, 163, 60, 0.35);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(242, 163, 60, 0.2);
        }

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

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

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

        .btn-dark {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
        }

        .btn-dark:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 14px;
            border-radius: var(--radius-sm);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            background: var(--bg);
            padding: 20px 0 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .breadcrumb a {
            color: var(--primary);
        }

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

        .breadcrumb .current {
            color: var(--text-secondary);
        }

        /* ===== Article Layout ===== */
        .article-page {
            padding: 40px 0 48px;
        }

        .article-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .article-header {
            text-align: center;
            padding: 28px 0 32px;
            margin-bottom: 36px;
            border-bottom: 1px solid var(--border);
        }

        .article-header h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .article-meta {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 500;
        }

        .article-content {
            max-width: 720px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.9;
            color: var(--text);
            word-break: break-word;
        }

        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 40px 0 16px;
            line-height: 1.4;
            position: relative;
            padding-left: 14px;
        }

        .article-content h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            background: var(--primary);
            border-radius: 4px;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 32px 0 12px;
            line-height: 1.4;
        }

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

        .article-content a {
            color: var(--primary);
            text-decoration: underline solid 1px rgba(27, 90, 154, 0.3);
            text-underline-offset: 4px;
        }

        .article-content a:hover {
            text-decoration: underline solid 1px var(--accent);
        }

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

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

        .article-content ul li::marker {
            color: var(--primary);
        }

        .article-content img {
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            margin: 24px auto;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            color: var(--text-secondary);
        }

        .article-content code {
            background: #EFF3F8;
            color: var(--primary-dark);
            padding: 2px 6px;
            border-radius: 6px;
            font-family: var(--font-mono);
            font-size: 14px;
        }

        .article-content pre {
            background: #1B2A38;
            color: #E8F1F9;
            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;
            border-radius: 0;
            font-size: inherit;
        }

        /* ===== Prev / Next ===== */
        .prev-next {
            max-width: 720px;
            margin: 48px auto 0;
            display: flex;
            justify-content: space-between;
            gap: 24px;
            padding: 24px 0;
            border-top: 1px solid var(--border);
        }

        .prev-next a {
            font-size: 15px;
            color: var(--primary);
            font-weight: 500;
            max-width: 46%;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .prev-next a:hover {
            color: var(--accent-hover);
        }

        .prev-next .disabled {
            color: var(--text-muted);
            cursor: default;
            pointer-events: none;
        }

        /* ===== Related ===== */
        .related-section {
            padding: 64px 0;
            border-top: 1px solid var(--border);
        }

        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            position: relative;
            padding-left: 14px;
            line-height: 1.3;
            color: var(--text);
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 2px;
            bottom: 2px;
            width: 4px;
            background: var(--primary);
            border-radius: 4px;
        }

        .section-more {
            font-size: 15px;
            color: var(--primary);
            font-weight: 500;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all .25s ease;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: rgba(27, 90, 154, 0.25);
        }

        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .related-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .related-card-body h3 a {
            color: var(--text);
        }

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

        .related-card-body p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.65;
            margin-bottom: 12px;
            flex: 1;
        }

        .related-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .related-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px;
            background: var(--primary-light);
            border-radius: var(--radius-md);
            border: 1px dashed rgba(27, 90, 154, 0.3);
            color: var(--text-secondary);
            font-size: 15px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 0 0 64px;
        }

        .cta-box {
            background: var(--primary-dark);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-box h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-box p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            font-size: 15px;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: #F0F4F9;
            border-top: 1px solid var(--border);
            padding: 56px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text);
        }

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

        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .footer-contact i {
            margin-top: 4px;
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .mobile-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-140%);
                transition: transform .3s ease;
                z-index: 99;
                box-shadow: 0 8px 24px rgba(16, 36, 61, 0.08);
                gap: 0;
            }

            .main-nav.open {
                transform: translateY(0);
            }

            .main-nav ul {
                flex-direction: column;
                gap: 0;
                width: 100%;
            }

            .main-nav li {
                border-bottom: 1px solid var(--border);
                width: 100%;
            }

            .main-nav li:last-child {
                border-bottom: none;
            }

            .main-nav a {
                display: block;
                padding: 14px 8px;
                font-size: 16px;
            }

            .main-nav a.active::after {
                left: 0;
                width: 4px;
                height: auto;
                top: 0;
                bottom: 0;
                border-radius: 0;
            }

            .header-cta {
                display: none;
            }

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

        @media (max-width: 640px) {
            .container,
            .grid-container {
                padding: 0 16px;
            }

            .header-inner {
                height: 64px;
            }

            .logo {
                font-size: 18px;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }

            .article-page {
                padding: 24px 0 32px;
            }

            .article-header {
                padding: 20px 0 24px;
                margin-bottom: 24px;
            }

            .article-header h1 {
                font-size: 26px;
                line-height: 1.35;
            }

            .article-meta {
                gap: 10px;
                font-size: 13px;
            }

            .article-content {
                font-size: 15px;
                line-height: 1.85;
            }

            .article-content h2 {
                font-size: 22px;
                padding-left: 12px;
            }

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

            .prev-next {
                flex-direction: column;
                gap: 12px;
            }

            .prev-next a {
                max-width: 100%;
                white-space: normal;
            }

            .related-section {
                padding: 48px 0;
            }

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

            .section-title {
                font-size: 22px;
            }

            .cta-box {
                padding: 40px 20px;
            }

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

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

            .cta-buttons .btn {
                width: 100%;
                max-width: 280px;
            }

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

            .site-footer {
                padding: 40px 0 20px;
            }
        }

        @media (max-width: 520px) {
            .header-cta {
                display: none;
            }

            .main-nav {
                top: 64px;
            }

            .article-content pre {
                font-size: 13px;
                padding: 16px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1B5A9A;
            --primary-dark: #134A7D;
            --primary-light: #E8F1F9;
            --accent: #F2A33C;
            --accent-hover: #D98A26;
            --success: #1FA25C;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --text: #1B2A38;
            --text-secondary: #5C6B7A;
            --text-muted: #9AA8B8;
            --border: #E2EAF2;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(16, 36, 61, 0.06);
            --shadow-md: 0 10px 24px rgba(16, 36, 61, 0.12);
            --shadow-btn: 0 4px 10px rgba(27, 90, 154, 0.2);
            --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            -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(--accent-hover);
        }

        ul {
            padding: 0;
            margin: 0;
            list-style: none;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            padding: 13px 26px;
            border-radius: 10px;
            border: 1.5px solid transparent;
            cursor: pointer;
            text-decoration: none;
            transition: var(--transition);
            font-family: var(--font-family);
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 14px rgba(27, 90, 154, 0.28);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(27, 90, 154, 0.18);
        }

        .btn-primary:focus-visible,
        .btn-outline:focus-visible {
            outline: 3px solid rgba(27, 90, 154, 0.4);
            outline-offset: 2px;
        }

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

        .btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }

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

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.7);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 13px;
            border-radius: 8px;
        }

        /* ---- Header / Nav ---- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid var(--border);
            transition: box-shadow 0.3s ease, background 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(16, 36, 61, 0.08);
            background: rgba(255, 255, 255, 0.97);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -1px;
            box-shadow: 0 2px 8px rgba(27, 90, 154, 0.28);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
        }

        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            padding: 6px 2px;
            text-decoration: none;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
            transition: width 0.25s ease;
        }

        .main-nav a:hover {
            color: var(--primary);
        }

        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .main-nav a.active::after {
            width: 100%;
        }

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

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            margin: 5px 0;
            border-radius: 2px;
            transition: var(--transition);
        }

        /* ---- Page Hero ---- */
        .page-hero {
            padding: 60px 0 40px;
            background: linear-gradient(180deg, #EAF2F9 0%, var(--bg) 100%);
            border-bottom: 1px solid var(--border);
        }

        .hero-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .hero-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--primary);
        }

        .hero-card h1 {
            font-size: 40px;
            line-height: 1.25;
            font-weight: 700;
            margin: 0 0 14px;
            color: var(--text);
        }

        .hero-card>p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 0 22px;
            line-height: 1.8;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hero-badges span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 999px;
        }

        .hero-badges span i {
            font-size: 12px;
        }

        /* ---- Guide Main ---- */
        .guide-main {
            padding: 48px 0 80px;
        }

        .guide-layout {
            align-items: flex-start;
            gap: 32px;
        }

        .guide-content {
            flex: 0 0 calc(66.666% - 16px);
            max-width: calc(66.666% - 16px);
        }

        .guide-sidebar {
            flex: 0 0 calc(33.333% - 16px);
            max-width: calc(33.333% - 16px);
        }

        /* --- Timeline --- */
        .section-heading {
            display: flex;
            align-items: center;
            gap: 12px;
            margin: 0 0 32px;
        }

        .section-heading::before {
            content: "";
            width: 4px;
            height: 24px;
            border-radius: 4px;
            background: var(--primary);
            flex-shrink: 0;
        }

        .section-heading h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            margin: 0;
        }

        .section-heading p {
            margin: 4px 0 0;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .timeline {
            position: relative;
            padding-left: 0;
        }

        .timeline-item {
            position: relative;
            padding-left: 72px;
            margin-bottom: 44px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-item::before {
            content: "";
            position: absolute;
            left: 23px;
            top: 62px;
            bottom: -44px;
            width: 2px;
            background: var(--border);
        }

        .timeline-item:last-child::before {
            display: none;
        }

        .timeline-marker {
            position: absolute;
            left: 0;
            top: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(27, 90, 154, 0.3);
            z-index: 2;
        }

        .timeline-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .timeline-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(27, 90, 154, 0.2);
        }

        .timeline-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 0 0 10px;
            color: var(--text);
        }

        .timeline-card p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin: 0 0 16px;
        }

        .timeline-card ul {
            margin: 0 0 14px;
            padding: 0;
        }

        .timeline-card ul li {
            position: relative;
            padding-left: 18px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 4px;
        }

        .timeline-card ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 11px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }

        .timeline-media {
            border-radius: 12px;
            overflow: hidden;
            margin-top: 14px;
        }

        .timeline-media img {
            width: 100%;
            height: auto;
            min-height: 120px;
            object-fit: cover;
        }

        .timeline-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            padding: 2px 10px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        /* --- Sticky Sidebar --- */
        .sticky-sidebar {
            position: sticky;
            top: 92px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

        .sticky-sidebar h3 {
            font-size: 16px;
            font-weight: 600;
            margin: 0 0 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sticky-sidebar h3 i {
            color: var(--primary);
        }

        .sticky-sidebar ul li {
            margin-bottom: 2px;
        }

        .sticky-sidebar ul a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 12px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--transition);
        }

        .sticky-sidebar ul a::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--border);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .sticky-sidebar ul a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .sticky-sidebar ul a:hover::before {
            background: var(--primary);
        }

        .sticky-sidebar .sidebar-note {
            margin-top: 18px;
            padding: 14px;
            background: var(--primary-light);
            border-radius: var(--radius-sm);
            font-size: 13px;
            color: var(--primary-dark);
            line-height: 1.6;
        }

        /* ---- FAQ ---- */
        .faq-section {
            padding: 80px 0;
            background: var(--card-bg);
            border-top: 1px solid var(--border);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: #F0F6FC;
            border-radius: 16px;
            margin-bottom: 14px;
            overflow: hidden;
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(27, 90, 154, 0.15);
        }

        .faq-item details {
            padding: 0;
        }

        .faq-item summary {
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            position: relative;
            transition: var(--transition);
        }

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

        .faq-item summary::after {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            color: var(--primary);
            transition: transform 0.2s ease;
            flex-shrink: 0;
        }

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

        .faq-item summary:hover {
            color: var(--primary);
        }

        .faq-item .faq-answer {
            padding: 0 24px 18px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        .faq-item .faq-answer p {
            margin: 0;
        }

        /* ---- CTA ---- */
        .cta-section {
            padding: 80px 0;
            background: var(--bg);
        }

        .cta-box {
            background: var(--primary-dark);
            border-radius: var(--radius-lg);
            padding: 56px 32px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
        }

        .cta-box h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
        }

        .cta-box p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

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

        .cta-note {
            display: block;
            margin-top: 18px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }

        /* ---- Footer ---- */
        .site-footer {
            background: #F0F4F9;
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 40px;
        }

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

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin: 0;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 16px;
        }

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

        .footer-col a {
            font-size: 14px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--transition);
        }

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

        .footer-contact li {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .footer-contact i {
            color: var(--primary);
            margin-top: 5px;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            text-align: center;
        }

        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: none;
        }

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

        /* ---- Responsive ---- */
        @media (max-width: 1023px) {
            .container {
                padding: 0 20px;
            }

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

            .section-heading h2 {
                font-size: 26px;
            }

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

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }

            .nav-toggle {
                display: block;
                z-index: 101;
            }

            .main-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: #fff;
                box-shadow: -4px 0 30px rgba(16, 36, 61, 0.2);
                padding: 80px 24px 24px;
                transition: right 0.3s ease;
                z-index: 100;
            }

            .main-nav.open {
                right: 0;
            }

            .main-nav ul {
                flex-direction: column;
                align-items: stretch;
                gap: 0;
            }

            .main-nav li {
                border-bottom: 1px solid var(--border);
            }

            .main-nav a {
                display: block;
                padding: 14px 12px;
                font-size: 15px;
            }

            .main-nav a::after {
                display: none;
            }

            .main-nav a.active {
                border-left: 4px solid var(--primary);
                background: var(--primary-light);
                font-weight: 600;
            }

            .header-actions {
                margin-left: auto;
                margin-right: 12px;
            }

            .header-actions .btn {
                display: none;
            }

            .nav-overlay {
                display: none;
            }

            .nav-overlay.show {
                display: block;
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: rgba(0, 0, 0, 0.4);
                z-index: 99;
            }

            .page-hero {
                padding: 40px 0 28px;
            }

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

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

            .hero-card>p {
                font-size: 15px;
            }

            .guide-main {
                padding: 32px 0 56px;
            }

            .guide-layout {
                flex-direction: column;
                gap: 40px;
            }

            .guide-content,
            .guide-sidebar {
                flex: 0 0 100%;
                max-width: 100%;
            }

            .sticky-sidebar {
                position: static;
            }

            .timeline-item {
                padding-left: 56px;
            }

            .timeline-item::before {
                left: 19px;
            }

            .timeline-marker {
                width: 40px;
                height: 40px;
                font-size: 15px;
            }

            .timeline-card {
                padding: 20px;
            }

            .timeline-card h3 {
                font-size: 18px;
            }

            .faq-section,
            .cta-section {
                padding: 48px 0;
            }

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

            .faq-item summary {
                font-size: 15px;
                padding: 16px 18px;
            }

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

            .cta-box {
                padding: 40px 20px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-brand .footer-desc {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .hero-badges {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }

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

/* roulang page: category2 */
:root {
    --primary: #1B5A9A;
    --primary-dark: #134A7D;
    --primary-light: #E8F1F9;
    --accent: #F2A33C;
    --accent-hover: #D98A26;
    --success: #1FA25C;
    --bg: #F5F8FC;
    --card-bg: #FFFFFF;
    --text: #1B2A38;
    --text-secondary: #5C6B7A;
    --text-muted: #9AA8B8;
    --border: #E2EAF2;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-card: 0 2px 8px rgba(16,36,61,0.06);
    --shadow-card-hover: 0 10px 24px rgba(16,36,61,0.12);
    --shadow-btn: 0 4px 10px rgba(27,90,154,0.2);
    --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --container-width: 1200px;
    --spacer: 80px;
    --transition: all 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-family);
    background: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }
.container { max-width: var(--container-width); margin: 0 auto; padding: 0 24px; }
.row { max-width: none; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 26px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    white-space: nowrap;
}
.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 10px rgba(242,163,60,0.3);
}
.btn-primary:hover {
    background: var(--accent-hover);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(242,163,60,0.4);
}
.btn-primary:active {
    transform: translateY(1px);
    box-shadow: 0 2px 6px rgba(242,163,60,0.2);
}
.btn-primary:focus-visible {
    outline: 3px solid rgba(242,163,60,0.4);
    outline-offset: 2px;
}
.btn-secondary {
    background: #fff;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-secondary:hover {
    background: var(--primary-light);
    border-color: var(--primary-dark);
    color: var(--primary-dark);
    transform: translateY(-1px);
}
.btn-secondary:active {
    transform: translateY(1px);
}
.btn-secondary:focus-visible {
    outline: 3px solid rgba(27,90,154,0.35);
    outline-offset: 2px;
}
.btn-light {
    background: #fff;
    color: var(--primary-dark);
    border: 2px solid transparent;
}
.btn-light:hover { background: var(--primary-light); color: var(--primary-dark); transform: translateY(-1px); }

/* Backgrounds */
.bg-primary-light { background: var(--primary-light); }
.bg-white { background: #fff; }

/* Header */
.site-header {
    background: rgba(255,255,255,0.95);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}
.site-header.scrolled {
    box-shadow: 0 2px 12px rgba(16,36,61,0.08);
    background: rgba(255,255,255,0.97);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(27,90,154,0.3);
}
.logo-text {
    font-size: 22px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: 0.5px;
}
.main-nav ul {
    display: flex;
    align-items: center;
    gap: 28px;
}
.main-nav a {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 8px 2px;
    position: relative;
    letter-spacing: 0.3px;
}
.main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 3px;
    border-radius: 3px;
    background: var(--primary);
    opacity: 0;
    transform: scaleX(0.4);
    transition: var(--transition);
}
.main-nav a:hover { color: var(--primary); }
.main-nav a:hover::after { opacity: 1; transform: scaleX(1); }
.main-nav a.active { color: var(--primary); }
.main-nav a.active::after { opacity: 1; transform: scaleX(1); }
.nav-cta { margin-left: 8px; }
.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: #fff;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--text);
    transition: var(--transition);
}
.nav-toggle:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }

/* Page Banner */
.page-banner {
    position: relative;
    padding: 100px 0 90px;
    background: linear-gradient(120deg, rgba(234,242,249,0.95) 0%, rgba(245,248,252,0.95) 100%), url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    border-bottom: 1px solid var(--border);
    overflow: hidden;
}
.page-banner::before {
    content: "";
    position: absolute;
    top: -80px;
    right: -60px;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: rgba(27,90,154,0.06);
}
.page-banner::after {
    content: "";
    position: absolute;
    bottom: -100px;
    left: -80px;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: rgba(242,163,60,0.08);
}
.banner-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 780px;
    margin: 0 auto;
}
.banner-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 20px;
}
.page-banner h1 {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.25;
    color: var(--text);
    margin-bottom: 16px;
}
.page-banner p {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 28px;
}
.banner-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.banner-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}
.stat-item { text-align: center; }
.stat-num { font-size: 28px; font-weight: 800; color: var(--primary); line-height: 1.2; }
.stat-num span { font-size: 18px; margin-left: 2px; }
.stat-label { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }

/* Section */
.section { padding: var(--spacer) 0; }
.section-sm { padding: 48px 0; }
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 48px;
}
.section-header h2 {
    font-size: 30px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.3;
    margin-bottom: 14px;
    position: relative;
    display: inline-block;
    padding-left: 18px;
}
.section-header h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 26px;
    border-radius: 4px;
    background: var(--primary);
}
.section-header p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}
.section-header .sub-title {
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
    margin-bottom: 10px;
}

/* Split Sections */
.split-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}
.split-row:last-child { margin-bottom: 0; }
.split-row.row-reverse .split-media { order: 2; }
.split-row.row-reverse .split-content { order: 1; }
.split-media {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border);
    background: #fff;
}
.split-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.split-media:hover img { transform: scale(1.02); }
.split-media::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 30%;
    background: linear-gradient(to top, rgba(16,36,61,0.15), transparent);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    pointer-events: none;
}
.split-content .eyebrow {
    font-size: 13px;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 12px;
    display: block;
}
.split-content h3 { font-size: 28px; font-weight: 800; color: var(--text); margin-bottom: 16px; line-height: 1.35; }
.split-content p { font-size: 16px; color: var(--text-secondary); line-height: 1.85; margin-bottom: 20px; }
.split-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.tag-badge {
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.tag-badge i { font-size: 11px; }

/* Feature Cards */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 8px;
}
.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--primary), var(--accent));
    opacity: 0;
    transition: var(--transition);
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: rgba(27,90,154,0.25);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
    width: 52px;
    height: 52px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    margin-bottom: 18px;
    transition: var(--transition);
}
.feature-card:hover .feature-icon {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 6px 16px rgba(27,90,154,0.25);
}
.feature-card h3 { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.75; }

/* Steps / Flow */
.steps-section {
    background: var(--primary-dark);
    border-radius: var(--radius-lg);
    padding: 56px 48px;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.steps-section::before {
    content: "";
    position: absolute;
    top: -60px;
    right: -60px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
}
.steps-section::after {
    content: "";
    position: absolute;
    bottom: -80px;
    left: 40px;
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: rgba(255,255,255,0.04);
}
.steps-section .section-header { color: #fff; margin-bottom: 40px; }
.steps-section .section-header h2 { color: #fff; }
.steps-section .section-header h2::before { background: var(--accent); }
.steps-section .section-header p { color: rgba(255,255,255,0.75); }
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    position: relative;
    z-index: 2;
}
.step-item {
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    transition: var(--transition);
}
.step-item:hover { background: rgba(255,255,255,0.14); transform: translateY(-3px); }
.step-num {
    font-size: 36px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 14px;
    font-family: Inter, -apple-system, sans-serif;
}
.step-item h4 { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.step-item p { font-size: 14px; color: rgba(255,255,255,0.75); line-height: 1.7; }

/* FAQ */
.faq-wrap {
    max-width: 820px;
    margin: 0 auto;
    background: #F0F6FC;
    border-radius: var(--radius-lg);
    padding: 24px;
}
.faq-accordion {
    background: transparent;
}
.faq-accordion .accordion-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    overflow: hidden;
    transition: var(--transition);
}
.faq-accordion .accordion-item:hover { border-color: rgba(27,90,154,0.3); }
.faq-accordion .accordion-item.is-active { border-color: var(--primary); box-shadow: 0 4px 14px rgba(27,90,154,0.1); }
.faq-accordion .accordion-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 18px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}
.faq-accordion .accordion-title:hover { color: var(--primary); background: #fafcff; }
.faq-accordion .accordion-title::after {
    content: "+";
    font-size: 22px;
    color: var(--primary);
    font-weight: 400;
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--primary-light);
    border-radius: 6px;
    background: var(--primary-light);
    transition: var(--transition);
}
.faq-accordion .accordion-item.is-active > .accordion-title { border-bottom-color: var(--border); color: var(--primary); }
.faq-accordion .accordion-item.is-active .accordion-title::after {
    transform: rotate(45deg);
    background: var(--primary);
    color: #fff;
    box-shadow: 0 3px 8px rgba(27,90,154,0.25);
}
.faq-accordion .accordion-content {
    padding: 0 24px 20px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    background: #fff;
    border-bottom-left-radius: var(--radius-sm);
    border-bottom-right-radius: var(--radius-sm);
}
.faq-accordion .accordion-content p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; }

/* CTA */
.cta-section { padding: 40px 0 80px; }
.cta-box {
    background: var(--primary-dark);
    border-radius: var(--radius-lg);
    padding: 56px 48px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.cta-box::before {
    content: "";
    position: absolute;
    top: -80px;
    right: -50px;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
}
.cta-box::after {
    content: "";
    position: absolute;
    bottom: -60px;
    left: -40px;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: rgba(242,163,60,0.08);
}
.cta-inner { max-width: 680px; margin: 0 auto; position: relative; z-index: 2; }
.cta-inner h2 { font-size: 30px; font-weight: 800; margin-bottom: 14px; line-height: 1.3; }
.cta-inner p { font-size: 16px; color: rgba(255,255,255,0.85); line-height: 1.8; margin-bottom: 30px; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-note { margin-top: 20px; font-size: 13px; color: rgba(255,255,255,0.5); }

/* Footer */
.site-footer {
    background: #F0F4F9;
    border-top: 1px solid var(--border);
    padding: 60px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo-text { font-size: 20px; }
.footer-brand .logo-icon { width: 38px; height: 38px; font-size: 18px; }
.footer-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-top: 8px; }
.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
    position: relative;
    padding-bottom: 8px;
}
.footer-col h4::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 24px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}
.footer-col ul a:hover { color: var(--primary); padding-left: 6px; }
.footer-contact li {
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
    line-height: 1.7;
}
.footer-contact i { color: var(--primary); width: 18px; text-align: center; }
.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 20px 0;
    text-align: center;
}
.footer-bottom p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary); }

/* Reveal animation */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* Responsive */
@media screen and (max-width: 1023px) {
    :root { --spacer: 60px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .page-banner { padding: 70px 0 60px; }
    .page-banner h1 { font-size: 34px; }
    .split-row { gap: 40px; grid-template-columns: 1fr; margin-bottom: 56px; }
    .split-row.row-reverse .split-media { order: 1; }
    .split-row.row-reverse .split-content { order: 2; }
    .feature-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .steps-section { padding: 40px 28px; }
    .steps-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
}
@media screen and (max-width: 767px) {
    .section { padding: 48px 0; }
    .section-header { margin-bottom: 32px; }
    .section-header h2 { font-size: 24px; }
    .split-row { grid-template-columns: 1fr; gap: 28px; margin-bottom: 48px; }
    .split-media { min-height: 240px; }
    .split-content h3 { font-size: 22px; }
    .feature-grid { grid-template-columns: 1fr; gap: 16px; }
    .feature-card { padding: 24px 20px; }
    .steps-grid { grid-template-columns: 1fr; gap: 16px; }
    .steps-section { padding: 32px 20px; }
    .steps-section .section-header h2 { font-size: 22px; }
    .cta-box { padding: 40px 24px; }
    .cta-inner h2 { font-size: 24px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .banner-stats { flex-wrap: wrap; gap: 20px; padding-top: 24px; }
    .stat-num { font-size: 24px; }
    .banner-btns { flex-direction: column; align-items: center; }
    .btn { width: 100%; max-width: 280px; }
}
@media screen and (max-width: 640px) {
    .site-header .header-inner { height: 64px; }
    .nav-toggle { display: flex; }
    .main-nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 8px 24px rgba(16,36,61,0.12);
        transform: translateY(-12px);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        z-index: 999;
    }
    .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .main-nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: 8px 16px; }
    .main-nav li { border-bottom: 1px solid #f0f4f9; }
    .main-nav li:last-child { border-bottom: none; }
    .main-nav a {
        display: block;
        padding: 14px 8px;
        font-size: 15px;
        color: var(--text);
    }
    .main-nav a::after { display: none; }
    .main-nav a.active { color: var(--primary); border-left: 4px solid var(--primary); padding-left: 12px; background: var(--primary-light); border-radius: 0 8px 8px 0; }
    .main-nav a:hover { background: #f7fafd; border-radius: 8px; }
    .nav-cta { display: none; }
    .nav-cta-mobile { display: block !important; padding: 16px 8px 8px; }
    .nav-cta-mobile .btn { width: 100%; max-width: none; }
}
@media screen and (max-width: 480px) {
    .container { padding: 0 16px; }
    .page-banner { padding: 48px 0 40px; }
    .page-banner h1 { font-size: 28px; }
    .page-banner p { font-size: 15px; }
    .split-media { min-height: 200px; }
    .banner-stats { gap: 12px; padding-top: 16px; }
    .stat-num { font-size: 20px; }
    .stat-label { font-size: 12px; }
    .cta-note { font-size: 12px; }
}
@media (min-width: 1440px) {
    .container { max-width: 1200px; }
}

/* roulang page: category4 */
:root {
            --primary: #1B5A9A;
            --primary-dark: #134A7D;
            --primary-light: #E8F1F9;
            --accent: #F2A33C;
            --accent-hover: #D98A26;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --text: #1B2A38;
            --text-secondary: #5C6B7A;
            --text-muted: #9AA8B8;
            --border: #E2EAF2;
            --success: #1FA25C;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(16, 36, 61, 0.06);
            --shadow-md: 0 10px 24px rgba(16, 36, 61, 0.12);
            --btn-shadow: 0 4px 10px rgba(27, 90, 154, 0.2);
            --space-section: 80px;
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--accent-hover);
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--space-section) 0;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header h2 {
            position: relative;
            padding-left: 18px;
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
        }
        .section-header h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            background: var(--primary);
            border-radius: 4px;
        }
        .section-intro {
            margin-top: 10px;
            max-width: 680px;
            color: var(--text-secondary);
            font-size: 15px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1;
            padding: 13px 26px;
            border-radius: 10px;
            border: 1.5px solid transparent;
            transition: all .22s ease;
            white-space: nowrap;
        }
        .btn i {
            font-size: 14px;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff !important;
            box-shadow: 0 4px 10px rgba(242, 163, 60, 0.3);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 14px rgba(217, 138, 38, 0.35);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(217, 138, 38, 0.25);
        }
        .btn-primary:focus-visible,
        .btn-outline:focus-visible,
        .btn-ghost:focus-visible,
        .accordion-title:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .btn-outline {
            background: #fff;
            color: var(--primary) !important;
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.12);
            color: #fff !important;
            border: 1.5px solid rgba(255, 255, 255, 0.55);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.22);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: 8px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow .25s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 2px 12px rgba(16, 36, 61, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 3px 8px rgba(27, 90, 154, 0.25);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.3px;
        }
        .main-nav {
            flex: 1;
            display: flex;
            justify-content: center;
            margin: 0 12px;
        }
        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .main-nav ul li a {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 2px;
            position: relative;
            transition: color .2s ease;
        }
        .main-nav ul li a::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
            opacity: 0;
            transform: scaleX(0.4);
            transition: opacity .2s, transform .2s;
        }
        .main-nav ul li a:hover {
            color: var(--primary);
        }
        .main-nav ul li a:hover::after {
            opacity: 1;
            transform: scaleX(0.8);
        }
        .main-nav ul li a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .main-nav ul li a.active::after {
            opacity: 1;
            transform: scaleX(1);
        }
        .header-cta {
            flex-shrink: 0;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: var(--primary-light);
            transition: background .2s;
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform .25s ease, opacity .25s ease;
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            padding: 72px 0 64px;
            background: linear-gradient(180deg, #EAF2F9 0%, #F5F8FC 100%);
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(242, 163, 60, 0.08);
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 55% 45%;
            gap: 40px;
            align-items: center;
        }
        .page-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }
        .page-hero h1 {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text);
            margin-bottom: 14px;
        }
        .page-hero p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 480px;
            margin-bottom: 24px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-visual .visual-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 10px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            transform: rotate(1.2deg);
            transition: transform .3s ease;
        }
        .hero-visual .visual-card:hover {
            transform: rotate(0deg) translateY(-3px);
        }
        .hero-visual img {
            border-radius: 12px;
            width: 100%;
            height: 300px;
            object-fit: cover;
        }

        /* ===== FAQ Category Cards (two-column) ===== */
        .faq-category-section {
            padding: var(--space-section) 0 48px;
        }
        .faq-cards-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .faq-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }
        .faq-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: rgba(27, 90, 154, 0.25);
        }
        .faq-card-media {
            position: relative;
            height: 220px;
            overflow: hidden;
        }
        .faq-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .faq-card:hover .faq-card-media img {
            transform: scale(1.04);
        }
        .faq-card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.94);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            box-shadow: 0 2px 6px rgba(16, 36, 61, 0.1);
            backdrop-filter: blur(4px);
        }
        .faq-card-body {
            padding: 24px 24px 22px;
        }
        .faq-card-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }
        .faq-card-body p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .link-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            border-bottom: 1px dotted var(--primary);
            padding-bottom: 2px;
            transition: border-color .2s, color .2s;
        }
        .link-more:hover {
            color: var(--accent-hover);
            border-bottom-style: solid;
        }

        /* ===== Quote ===== */
        .quote-section {
            padding: 0 0 var(--space-section);
        }
        .quote-box {
            position: relative;
            background: var(--primary-light);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            border-left: 4px solid var(--primary);
            overflow: hidden;
        }
        .quote-box i.quote-icon {
            color: var(--primary);
            font-size: 28px;
            opacity: 0.35;
            position: absolute;
            top: 20px;
            left: 24px;
        }
        .quote-box p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            max-width: 760px;
            margin: 0 auto;
            font-weight: 500;
        }
        .quote-box .quote-author {
            margin-top: 18px;
            text-align: right;
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* ===== Resource List ===== */
        .resource-section {
            padding: 0 0 var(--space-section);
        }
        .resource-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 30px 28px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow .25s ease, transform .25s ease;
            height: 100%;
        }
        .resource-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .resource-card h3 {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
        }
        .resource-card h3 i {
            color: var(--primary);
            font-size: 18px;
        }
        .resource-card ul li {
            padding: 8px 0;
            border-bottom: 1px dashed var(--border);
        }
        .resource-card ul li:last-child {
            border-bottom: none;
        }
        .resource-card ul li a {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-secondary);
            font-size: 15px;
            transition: color .2s, padding-left .2s;
        }
        .resource-card ul li a i {
            font-size: 12px;
            color: var(--text-muted);
        }
        .resource-card ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .resource-card ul li a:hover i {
            color: var(--primary);
        }

        /* ===== FAQ Accordion ===== */
        .faq-section {
            padding: 0 0 var(--space-section);
        }
        .faq-accordion {
            background: #F0F6FC;
            border-radius: 16px;
            padding: 18px 24px;
            max-width: 820px;
        }
        .faq-accordion-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-accordion-item:last-child {
            border-bottom: none;
        }
        .faq-accordion-item .accordion-btn {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            text-align: left;
            padding: 18px 8px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            transition: color .2s ease;
            border-radius: 6px;
        }
        .faq-accordion-item .accordion-btn:hover {
            color: var(--primary);
        }
        .faq-accordion-item .accordion-btn .acc-icon {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 400;
            color: var(--primary);
            transition: transform .25s ease, background .25s ease;
        }
        .faq-accordion-item.open .accordion-btn .acc-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-accordion-item .acc-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease, padding .3s ease;
            padding: 0 8px;
        }
        .faq-accordion-item.open .acc-content {
            max-height: 320px;
            padding: 0 8px 18px 8px;
        }
        .faq-accordion-item .acc-content p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 0 0 var(--space-section);
        }
        .cta-box {
            background: var(--primary-dark);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::after {
            content: "";
            position: absolute;
            right: -40px;
            top: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            border: 24px solid rgba(255, 255, 255, 0.06);
        }
        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-tip {
            display: block;
            margin-top: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #F0F4F9;
            border-top: 1px solid var(--border);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid var(--border);
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color .2s, padding-left .2s;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .footer-contact li i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            padding-top: 20px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ===== Responsive ===== */
        @media (min-width: 1024px) and (max-width: 1279px) {
            .container {
                padding: 0 24px;
            }
            .main-nav ul {
                gap: 18px;
            }
        }
        @media (max-width: 1023px) {
            .header-inner {
                height: 64px;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 8px 24px rgba(16, 36, 61, 0.1);
                padding: 10px 24px 20px;
                flex-direction: column;
                align-items: stretch;
                max-height: 0;
                overflow: hidden;
                opacity: 0;
                visibility: hidden;
                transition: max-height .3s ease, opacity .25s ease, visibility .25s;
            }
            .main-nav.open {
                max-height: 340px;
                opacity: 1;
                visibility: visible;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
                align-items: stretch;
            }
            .main-nav ul li a {
                display: block;
                padding: 14px 8px;
                border-bottom: 1px solid var(--border);
                font-size: 15px;
            }
            .main-nav ul li a::after {
                display: none;
            }
            .main-nav ul li a.active {
                border-left: 4px solid var(--primary);
                padding-left: 12px;
                background: var(--primary-light);
                border-bottom-color: transparent;
            }
            .header-cta {
                margin-left: auto;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .faq-cards-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 639px) {
            .container {
                padding: 0 16px;
            }
            .section {
                --space-section: 48px;
            }
            .page-hero {
                padding: 40px 0 40px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .faq-card-media {
                height: 180px;
            }
            .quote-box {
                padding: 28px 20px;
            }
            .cta-box {
                padding: 40px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .resource-card {
                padding: 22px 18px;
            }
            .header-cta {
                display: none;
            }
            .header-inner {
                height: 60px;
            }
            .main-nav {
                top: 60px;
            }
            .faq-accordion {
                padding: 12px 16px;
            }
        }
        @media (min-width: 1440px) {
            .container {
                max-width: 1200px;
            }
        }