/* roulang page: index */
:root {
    --primary: #1B4C73;
    --primary-dark: #0E3454;
    --primary-light: #DCE9F2;
    --line: #DCE3EA;
    --board: #E1E8EF;
    --page-bg: #F4F7FA;
    --card-bg: #FFFFFF;
    --text: #17283A;
    --text-secondary: #5B7184;
    --text-weak: #8AA0B2;
    --accent: #D97B43;
    --accent-hover: #B5632F;
    --success: #3A8177;
    --danger: #B4473D;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-btn: 8px;
    --radius-tag: 6px;
    --shadow: 0 1px 2px rgba(11,33,50,.06), 0 12px 28px -18px rgba(11,33,50,.16);
    --shadow-hover: 0 20px 40px -24px rgba(11,33,50,.22);
    --container: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--page-bg);
    color: var(--text);
    line-height: 1.75;
    font-size: 16px;
    padding-bottom: 72px;
    -webkit-font-smoothing: antialiased;
}
ul, ol { list-style: none; }
a { text-decoration: none; color: inherit; transition: color .2s ease; }
a:hover { color: var(--primary); }
img { display: block; max-width: 100%; height: auto; }
button { font: inherit; border: none; background: none; cursor: pointer; }
.container { max-width: var(--container); margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.section { padding: 96px 0; }
.section-head { text-align: center; margin-bottom: 52px; }
.section-head.split { display: flex; justify-content: space-between; align-items: flex-end; text-align: left; gap: 24px; }
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--primary);
    background: rgba(27,76,115,.06);
    padding: 6px 14px;
    border-radius: 999px;
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.section-head h2 { font-size: 30px; line-height: 1.4; margin-top: 14px; font-weight: 700; color: var(--text); }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-btn);
    font-weight: 600;
    font-size: 15px;
    line-height: 1;
    padding: 14px 26px;
    border: 1px solid transparent;
    transition: all .2s ease;
    cursor: pointer;
}
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 12px 24px -18px rgba(11,33,50,.4); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-hover); color: #fff; transform: translateY(-1px); box-shadow: 0 12px 24px -17px rgba(217,123,67,.55); }
.btn-outline { background: transparent; color: var(--primary); border-color: #C4D3DF; }
.btn-outline:hover { background: #EAF1F7; color: var(--primary-dark); border-color: var(--primary); }
.btn-lg { padding: 17px 32px; font-size: 16px; border-radius: 10px; }
.btn-sm { padding: 10px 18px; font-size: 14px; }

/* Header */
.site-header {
    background: #FFFFFF;
    border-bottom: 1px solid #E3E9EF;
    position: sticky;
    top: 0;
    z-index: 120;
    transition: box-shadow .25s ease;
}
.site-header.is-scrolled { box-shadow: 0 8px 24px -20px rgba(11,33,50,.35); }
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 76px;
    gap: 32px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--primary);
    color: #fff;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .06em;
}
.brand-word { font-size: 18px; font-weight: 700; color: var(--text); white-space: nowrap; }
.main-nav { display: flex; align-items: center; gap: 40px; margin: 0 auto 0 44px; }
.nav-link { position: relative; display: inline-flex; align-items: center; gap: 6px; font-size: 15px; font-weight: 500; color: var(--text-secondary); padding: 8px 0; transition: color .2s ease; }
.nav-link .nav-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); opacity: 0; transform: scale(.5); transition: all .2s ease; }
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active .nav-dot { opacity: 1; transform: scale(1); }
.nav-toggle { display: none; margin-left: 12px; width: 40px; height: 40px; flex-shrink: 0; align-items: center; justify-content: center; border-radius: 8px; transition: background .2s ease; }
.nav-toggle:hover { background: #F1F5F9; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text); margin: 3px auto; border-radius: 2px; transition: all .3s ease; }
.nav-toggle.active span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.header-cta { flex-shrink: 0; }

/* Hero */
.hero { background: var(--page-bg); padding: 72px 0 56px; position: relative; overflow: hidden; }
.hero-inner { display: grid; grid-template-columns: 1.18fr 1fr; gap: 72px; align-items: center; }
.hero-copy h1 { font-size: 44px; line-height: 1.25; font-weight: 700; letter-spacing: -.01em; margin: 22px 0 20px; color: var(--text); }
.hero-copy .lead { font-size: 17px; line-height: 1.9; color: var(--text-secondary); max-width: 560px; margin-bottom: 34px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 18px; }
.hero-note { font-size: 13px; color: var(--text-weak); display: inline-flex; align-items: center; gap: 8px; }
.hero-note::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--success); }
.hero-visual {
    position: relative;
    min-height: 460px;
    border-radius: 18px;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--board);
    box-shadow: var(--shadow);
}
.hero-visual::before { content: ""; position: absolute; inset: 0; border-radius: 18px; background: rgba(220,233,242,.30); }
.hero-panel {
    position: relative;
    width: 88%;
    max-width: 360px;
    background: var(--card-bg);
    border: 1px solid var(--board);
    border-radius: 16px;
    padding: 28px 28px 22px;
    box-shadow: var(--shadow-hover);
}
.panel-head { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 22px; }
.panel-head .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); display: inline-block; }
.sim-input { height: 44px; border: 1px solid #CBD6DF; border-radius: 8px; background: #F7FAFC; margin-bottom: 14px; display: flex; align-items: center; padding: 0 14px; font-size: 13px; color: #94A7B8; }
.sim-btn { height: 44px; border-radius: 8px; background: var(--primary); color: #fff; font-weight: 600; display: flex; align-items: center; justify-content: center; font-size: 15px; margin-bottom: 14px; }
.sim-tip { font-size: 12px; color: var(--text-weak); line-height: 1.7; border-top: 1px dashed var(--line); padding-top: 12px; text-align: center; }
/* Trust strip */
.trust-strip { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 20px 0; }
.trust-list { display: flex; justify-content: space-between; gap: 40px; }
.trust-list li { display: flex; align-items: baseline; gap: 14px; font-size: 13px; color: var(--text-secondary); }
.trust-list strong { font-size: 20px; font-weight: 700; color: var(--primary); letter-spacing: -.02em; font-variant-numeric: tabular-nums; }

/* Features */
.feature-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--board);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    transition: transform .25s ease, box-shadow .25s ease;
}
.feature-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.feature-card.feature-wide { grid-column: span 12; display: flex; align-items: center; justify-content: space-between; gap: 48px; padding: 42px 48px; }
.feature-card.feature-half { grid-column: span 6; }
.feature-num { font-size: 13px; font-weight: 700; color: var(--accent); letter-spacing: .1em; display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.feature-num::before { content: ""; width: 18px; height: 2px; background: var(--accent); border-radius: 2px; }
.feature-card h3 { font-size: 20px; font-weight: 700; line-height: 1.5; margin-bottom: 10px; }
.feature-card p { font-size: 15px; line-height: 1.85; color: var(--text-secondary); max-width: 640px; }
.feature-wide-lead { min-width: 280px; }
.feature-wide-lead h3 { margin-bottom: 0; font-size: 22px; }

/* Steps */
.steps-section { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.steps-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.step-item { position: relative; padding-left: 58px; padding-bottom: 32px; }
.step-item:last-child { padding-bottom: 0; }
.step-item::before { content: ""; position: absolute; left: 19px; top: 42px; bottom: 4px; width: 1px; background: var(--line); }
.step-item:last-child::before { display: none; }
.step-index { position: absolute; left: 0; top: 2px; width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--primary); color: var(--primary); font-weight: 700; font-size: 15px; background: #fff; display: flex; align-items: center; justify-content: center; box-shadow: 0 2px 6px rgba(27,76,115,.08); }
.step-content h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.step-content p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; }
.step-visual img { border-radius: 16px; border: 1px solid var(--board); box-shadow: var(--shadow); width: 100%; object-fit: cover; aspect-ratio: 4/3; }
.steps-more { margin-top: 40px; }

/* Quotes */
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.quote-card { background: var(--card-bg); border: 1px solid var(--board); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); transition: transform .25s ease, box-shadow .25s ease; }
.quote-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.quote-thumb { width: 100%; height: 150px; object-fit: cover; border-radius: 10px; margin-bottom: 18px; }
.quote-card blockquote { font-size: 15px; line-height: 1.9; color: var(--text-secondary); margin-bottom: 18px; position: relative; padding-left: 18px; border-left: 3px solid var(--primary-light); }
.quote-card figcaption { font-size: 14px; font-weight: 600; color: var(--text); display: flex; align-items: center; gap: 10px; }
.quote-card figcaption::before { content: ""; width: 28px; height: 1px; background: var(--accent); }

/* News */
.news-list { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.news-row {
    display: flex;
    gap: 18px;
    background: var(--card-bg);
    border: 1px solid var(--board);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
    transition: transform .25s ease, box-shadow .25s ease;
}
.news-row:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.news-thumb { width: 120px; height: 96px; border-radius: 10px; overflow: hidden; background: #E7EDF3; flex-shrink: 0; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-info { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.news-tags { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.badge-soft { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: var(--radius-tag); font-size: 12px; font-weight: 600; background: var(--primary-light); color: var(--primary); }
.news-date { font-size: 12px; color: var(--text-weak); font-variant-numeric: tabular-nums; }
.news-info h3 { font-size: 16px; line-height: 1.55; font-weight: 600; margin-bottom: 6px; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.news-info h3 a { color: var(--text); }
.news-info h3 a:hover { color: var(--primary); }
.news-desc { font-size: 14px; line-height: 1.7; color: var(--text-secondary); overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; margin-bottom: 8px; }
.read-more { align-self: flex-start; font-size: 13px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 4px; margin-top: auto; }
.read-more::after { content: "→"; transition: transform .2s ease; }
.read-more:hover { color: var(--primary-dark); }
.read-more:hover::after { transform: translateX(3px); }
.more-link { font-size: 14px; font-weight: 600; color: var(--primary); white-space: nowrap; }
.more-link:hover { color: var(--accent); }
.empty-state { background: #F8FBFD; border: 1px dashed #CBD6DF; border-radius: var(--radius); padding: 56px 24px; text-align: center; color: var(--text-secondary); font-size: 15px; }
.empty-state::before { content: ""; display: block; width: 48px; height: 48px; border-radius: 50%; background: var(--primary-light); margin: 0 auto 16px; }

/* FAQ */
.faq-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 64px; align-items: start; }
.faq-intro p { margin-top: 16px; color: var(--text-secondary); font-size: 15px; line-height: 1.9; }
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: var(--card-bg); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: border-color .25s ease, box-shadow .25s ease; }
.faq-item.active { border-left: 3px solid var(--primary); box-shadow: 0 12px 30px -24px rgba(11,33,50,.24); }
.faq-question { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 22px; font-size: 16px; font-weight: 600; color: var(--text); text-align: left; transition: background .2s ease; }
.faq-question:hover { background: #F8FBFD; }
.faq-icon { width: 22px; height: 22px; border-radius: 7px; background: var(--primary-light); color: var(--primary); position: relative; flex-shrink: 0; transition: transform .3s ease, background .3s ease; }
.faq-icon::before, .faq-icon::after { content: ""; position: absolute; background: currentColor; border-radius: 2px; }
.faq-icon::before { top: 10px; left: 5px; right: 5px; height: 2px; }
.faq-icon::after { top: 5px; bottom: 5px; left: 10px; width: 2px; }
.faq-item.active .faq-icon { transform: rotate(45deg); background: var(--accent); color: #fff; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; padding: 0 22px; }
.faq-answer p { padding-bottom: 22px; font-size: 15px; color: var(--text-secondary); line-height: 1.85; }
.faq-item.active .faq-answer { max-height: 400px; }

/* CTA */
.cta-section { padding-top: 40px; }
.cta-box {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    padding: 72px 40px;
    text-align: center;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    border: 1px solid var(--board);
}
.cta-box::before { content: ""; position: absolute; inset: 0; background: rgba(255,255,255,.88); }
.cta-box > * { position: relative; }
.cta-box h2 { font-size: 30px; line-height: 1.4; font-weight: 700; color: var(--text); margin-bottom: 14px; }
.cta-box p { color: var(--text-secondary); font-size: 16px; line-height: 1.85; max-width: 620px; margin: 0 auto 30px; }

/* Footer */
.site-footer { background: #EAF0F5; margin-top: 0; }
.footer-top { padding: 56px 0 40px; display: grid; grid-template-columns: 1fr 1.4fr; gap: 56px; align-items: start; }
.footer-brand .brand-mark { width: 34px; height: 34px; font-size: 14px; background: var(--primary); }
.footer-brand .brand-word { font-size: 18px; font-weight: 700; }
.footer-brand p { margin-top: 16px; font-size: 14px; color: var(--text-secondary); max-width: 340px; line-height: 1.85; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer-col h4 { font-size: 14px; font-weight: 700; margin-bottom: 16px; color: var(--text); }
.footer-col a { display: block; font-size: 14px; color: var(--text-secondary); padding: 5px 0; line-height: 1.6; }
.footer-col a:hover { color: var(--primary); }
.footer-note { background: #E1E9F1; padding: 18px 0; }
.footer-note .container { display: flex; justify-content: center; font-size: 13px; color: var(--text-secondary); }
.footer-copy { border-top: 1px solid #D3DDE6; padding: 18px 0; }
.footer-copy .container { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-weak); flex-wrap: wrap; gap: 8px; }

/* Bottom fixed bar */
.bottom-bar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 90; height: 64px; background: rgba(255,255,255,.97); border-top: 1px solid var(--board); box-shadow: 0 -8px 24px -20px rgba(11,33,50,.28); }
.bar-inner { height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.bar-text { font-size: 15px; color: var(--text); font-weight: 500; }
.bar-text strong { color: var(--primary); font-weight: 700; }

/* Responsive */
@media (min-width: 768px) and (max-width: 1199px) {
    .container { padding-left: 24px; padding-right: 24px; }
    .hero-inner { grid-template-columns: 1fr 1fr; gap: 36px; }
    .hero-copy h1 { font-size: 38px; }
    .hero-visual { min-height: 400px; }
    .news-list { grid-template-columns: 1fr 1fr; }
    .quote-grid { grid-template-columns: repeat(2, 1fr); }
    .faq-layout { grid-template-columns: .9fr 1.1fr; gap: 32px; }
    .steps-wrap { grid-template-columns: 1fr 1fr; gap: 32px; }
    .feature-card.feature-wide { padding: 32px; }
    .footer-top { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 991px) {
    .news-list { grid-template-columns: 1fr; }
    .steps-wrap { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 767px) {
    .section { padding: 64px 0; }
    .container { padding-left: 16px; padding-right: 16px; }
    .header-inner { min-height: 64px; flex-wrap: wrap; }
    .nav-toggle { display: flex; }
    .main-nav {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 4px;
        padding: 8px 0 18px;
        margin: 0;
    }
    .main-nav.open { display: flex; }
    .nav-link { padding: 10px 0; border-bottom: 1px solid #F1F5F8; font-size: 16px; }
    .nav-link:last-child { border-bottom: none; }
    .header-cta { display: none; }
    .hero { padding: 48px 0 40px; }
    .hero-inner { grid-template-columns: 1fr; gap: 36px; }
    .hero-copy h1 { font-size: 34px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { width: 100%; }
    .hero-visual { min-height: 340px; }
    .hero-panel { width: 84%; padding: 22px 18px 16px; }
    .trust-list { flex-direction: column; gap: 14px; }
    .trust-list li { justify-content: flex-start; }
    .trust-list strong { font-size: 18px; }
    .feature-grid { gap: 16px; }
    .feature-card.feature-wide { grid-column: span 12; flex-direction: column; align-items: flex-start; gap: 20px; padding: 28px; }
    .feature-card.feature-half { grid-column: span 12; }
    .feature-wide-lead { min-width: auto; }
    .step-item { padding-left: 50px; }
    .step-compact { padding-left: 50px; }
    .quote-grid { grid-template-columns: 1fr; gap: 16px; }
    .news-list { gap: 16px; }
    .news-thumb { width: 96px; height: 88px; }
    .news-info h3 { font-size: 15px; }
    .section-head.split { flex-direction: column; align-items: flex-start; margin-bottom: 32px; }
    .section-head h2 { font-size: 26px; }
    .faq-layout { grid-template-columns: 1fr; gap: 40px; }
    .faq-question { font-size: 15px; padding: 17px 16px; }
    .faq-answer p { font-size: 14px; }
    .faq-answer { padding: 0 16px; }
    .cta-box { padding: 48px 20px; }
    .cta-box h2 { font-size: 24px; }
    .footer-top { grid-template-columns: 1fr; gap: 32px; padding: 40px 0 32px; }
    .footer-links { grid-template-columns: 1fr; gap: 24px; }
    .bar-text { font-size: 13px; line-height: 1.5; }
    .bar-text strong { display: block; }
    .bar-inner .btn { padding: 10px 14px; font-size: 13px; white-space: nowrap; }
}
@media (max-width: 480px) {
    body { font-size: 16px; }
    .brand-word { font-size: 16px; }
    .news-row { flex-direction: column; }
    .news-thumb { width: 100%; height: 150px; }
    .cta-box p { font-size: 15px; }
}

/* roulang page: category1 */
:root {
    /* Colors */
    --primary: #1B4C73;
    --primary-dark: #0E3454;
    --primary-light: #DCE9F2;
    --line: #DCE3EA;
    --bg-page: #F4F7FA;
    --white: #FFFFFF;
    --text-main: #17283A;
    --text-secondary: #5B7184;
    --text-weak: #8AA0B2;
    --cta-orange: #D97B43;
    --cta-orange-dark: #B5632F;
    --restgreen: #3A8177;
    --errorcolor: #B4473D;
    --footer-bg: #EAF0F5;
    --radius-card: 12px;
    --radius-btn: 8px;
    --radius-input: 8px;
    --radius-tag: 6px;
    --shadow-card: 0 1px 2px rgba(11, 33, 50, 0.06), 0 12px 28px -18px rgba(11, 33, 50, 0.16);
    --shadow-card-hover: 0 20px 40px -24px rgba(11, 33, 50, 0.22);
    --shadow-header: 0 8px 24px -20px rgba(11, 33, 50, 0.12);
    --transition: 0.2s ease;
    --space-section: 96px;
    }
    *,
    ::before,
    ::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    }
    html {
    scroll-behavior: smooth;
    }
    body {
    font-family: "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", Inter, Arial, sans-serif;
    background: var(--bg-page);
    color: var(--text-main);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    }
    a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition);
    }
    img {
    max-width: 100%;
    display: block;
    }
    button,
    input,
    select,
    textarea {
    font-family: inherit;
    font-size: inherit;
    }
    .container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
    }
    .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-btn);
    border: 1px solid transparent;
    padding: 10px 20px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s, opacity 0.2s;
    }
    .btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
    }
    .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--cta-orange);
    color: #fff;
    border: 1px solid var(--cta-orange);
    border-radius: var(--radius-btn);
    padding: 11px 24px;
    font-size: 15px;
    font-weight: 600;
    transition: background 0.2s, box-shadow 0.2s, transform 0.2s;
    }
    .btn-primary:hover {
    background: var(--cta-orange-dark);
    border-color: var(--cta-orange-dark);
    }
    .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-btn);
    border: 1px solid var(--primary);
    padding: 11px 24px;
    font-size: 15px;
    font-weight: 600;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    }
    .btn-secondary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    }
    .btn-outline {
    border: 1px solid var(--primary);
    color: var(--primary);
    background: transparent;
    padding: 8px 20px;
    border-radius: var(--radius-btn);
    font-weight: 500;
    }
    .btn-outline:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    }
    .btn-sm {
    padding: 6px 15px;
    font-size: 14px;
    }
    .header-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    }
    /* header */
    .site-header {
    background: #fff;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 100;
    height: 76px;
    }
    .header-inner {
    display: flex;
    align-items: center;
    height: 76px;
    gap: 40px;
    }
    .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    }
    .brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: #fff;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    }
    .brand-word {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-dark);
    white-space: nowrap;
    letter-spacing: 0.5px;
    }
    .nav-toggle {
    display: none;
    background: transparent;
    border: 0;
    width: 32px;
    height: 32px;
    margin-left: auto;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    align-items: center;
    }
    .nav-toggle span {
    background: var(--text-main);
    height: 2px;
    width: 20px;
    border-radius: 3px;
    transition: transform 0.3s, opacity 0.3s;
    }
    .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
    }
    .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    }
    .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
    }
    .main-nav {
    display: flex;
    gap: 42px;
    margin-left: auto;
    }
    .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    color: var(--text-main);
    font-weight: 500;
    padding: 10px 0;
    border-bottom: 2px solid transparent;
    transition: color 0.2s;
    }
    .nav-dot {
    display: none;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    }
    .nav-link:hover {
    color: var(--primary);
    }
    .nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    }
    /* Hero section */
    .category-hero {
    background: var(--bg-page);
    padding: 76px 0 64px;
    border-bottom: 1px solid var(--line);
    position: relative;
    overflow: hidden;
    }
    .category-hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    opacity: 0.15;
    }
    .category-hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
    align-items: center;
    }
    .hero-crumb {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
    }
    .hero-crumb a {
    color: var(--primary);
    }
    .hero-crumb span {
    display: inline-block;
    vertical-align: middle;
    }
    .category-hero h1 {
    font-size: 40px;
    line-height: 1.2;
    color: var(--primary-dark);
    font-weight: 700;
    margin: 0 0 20px;
    letter-spacing: 0.5px;
    }
    .category-hero-subtitle {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 28px;
    }
    .hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 24px;
    }
    .hero-security-tip {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-weak);
    background: rgba(58, 129, 119, 0.08);
    border-radius: 30px;
    padding: 6px 14px;
    display: inline-flex;
    margin-top: 14px;
    }
    .hero-card-visual {
    background: #FFFFFF;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 28px 32px;
    box-shadow: var(--shadow-card);
    }
    .visual-card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    }
    .visual-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 400;
    color: var(--restgreen);
    background: rgba(58, 129, 119, 0.1);
    padding: 4px 12px;
    border-radius: 20px;
    }
    .visual-field {
    background: #F5F7FA;
    border: 1px solid var(--line);
    border-radius: 8px;
    height: 46px;
    display: flex;
    align-items: center;
    padding: 0 14px;
    color: var(--text-weak);
    font-size: 14px;
    margin-bottom: 12px;
    }
    .visual-btn-sim {
    background: var(--primary);
    color: #fff;
    text-align: center;
    padding: 12px 0;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    margin-top: 6px;
    }
    .visual-hint {
    margin-top: 14px;
    font-size: 13px;
    color: var(--text-weak);
    padding-top: 10px;
    border-top: 1px dashed var(--line);
    }
    /* content */
    .category-main {
    padding: var(--space-section) 0;
    }
    .section-block {
    margin-bottom: 104px;
    }
    .section-head {
    margin-bottom: 44px;
    max-width: 720px;
    }
    .section-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 12px;
    }
    .section-head h2 {
    font-size: 32px;
    line-height: 1.35;
    color: var(--primary-dark);
    font-weight: 700;
    margin: 0 0 14px;
    }
    .section-head p {
    font-size: 16px;
    color: var(--text-secondary);
    }
    .section-head.light h2,
    .section-head.light p {
    color: #fff;
    }
    .section-head.light .section-eyebrow {
    color: rgba(255, 255, 255, 0.8);
    }
    /* cards */
    .guide-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    }
    .guide-card {
    background: var(--white);
    border: 1px solid #E1E8EF;
    border-radius: var(--radius-card);
    padding: 32px 28px;
    box-shadow: var(--shadow-card);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .guide-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    }
    .guide-card-num {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-light);
    line-height: 1;
    margin-bottom: 18px;
    display: block;
    font-variant-numeric: tabular-nums;
    }
    .guide-card h3 {
    font-size: 19px;
    color: var(--primary-dark);
    font-weight: 600;
    margin-bottom: 12px;
    }
    .guide-card p {
    color: var(--text-secondary);
    font-size: 14.5px;
    margin-bottom: 12px;
    }
    .guide-card a {
    color: var(--primary);
    font-size: 14px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    }
    .guide-card a:hover {
    color: var(--primary-dark);
    }
    .tag {
    display: inline-flex;
    align-items: center;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-tag);
    font-size: 12px;
    padding: 3px 10px;
    font-weight: 600;
    }
    /* environment checklist */
    .env-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: stretch;
    }
    .env-imgs {
    border-radius: 16px;
    overflow: hidden;
    background: var(--primary-light);
    min-height: 300px;
    position: relative;
    }
    .env-imgs img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    }
    .env-content {
    padding: 12px 0;
    }
    .env-content h3 {
    font-size: 22px;
    margin-bottom: 16px;
    color: var(--primary-dark);
    }
    .env-list {
    list-style: none;
    padding: 0;
    margin: 0;
    }
    .env-list li {
    display: flex;
    gap: 14px;
    padding: 18px 0;
    border-bottom: 1px solid var(--line);
    }
    .env-list li:last-child {
    border-bottom: 0;
    }
    .env-index {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    }
    .env-desc strong {
    display: block;
    margin-bottom: 4px;
    color: var(--text-main);
    font-weight: 600;
    font-size: 15px;
    }
    .env-desc span {
    font-size: 14.5px;
    color: var(--text-secondary);
    line-height: 1.6;
    }
    /* table */
    .device-compare {
    margin-top: 44px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--white);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    }
    .device-compare table {
    width: 100%;
    border-collapse: collapse;
    }
    .device-compare th {
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    padding: 16px 20px;
    text-align: left;
    }
    .device-compare td {
    padding: 15px 20px;
    border-bottom: 1px solid var(--line);
    color: var(--text-secondary);
    font-size: 15px;
    vertical-align: top;
    }
    .device-compare td:first-child {
    color: var(--text-main);
    font-weight: 500;
    }
    .device-compare tr:last-child td {
    border-bottom: 0;
    }
    .device-compare tr:hover td {
    background-color: #FAFBFC;
    }
    /* steps */
    .login-steps {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    margin-top: 44px;
    position: relative;
    flex-wrap: wrap;
    }
    .login-steps::before {
    content: '';
    position: absolute;
    top: 28px;
    left: 4%;
    width: 92%;
    height: 2px;
    background: var(--primary-light);
    z-index: 0;
    }
    .login-step-item {
    background: var(--white);
    border: 1px solid var(--line);
    width: 23%;
    border-radius: 14px;
    padding: 28px 20px;
    text-align: center;
    position: relative;
    z-index: 1;
    box-shadow: var(--shadow-card);
    transition: transform .2s;
    }
    .login-step-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    }
    .step-num {
    background: var(--primary);
    color: #fff;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    margin: 0 auto 18px;
    border: 6px solid #FFFFFF;
    box-shadow: 0 0 0 1px var(--line);
    }
    .login-step-item h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary-dark);
    }
    .login-step-item p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
    }
    /* CTA    */
    .cta-banner {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 44px 48px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    background-color: rgba(27, 76, 115, 0.04);
    }
    .cta-box {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 44px 48px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    }
    .cta-box::after {
    content: '';
    position: absolute;
    right: -30px;
    top: -30px;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(27, 76, 115, 0.05) 0%, rgba(27, 76, 115, 0) 70%);
    }
    .cta-copy h2 {
    color: var(--primary-dark);
    font-size: 24px;
    margin-bottom: 8px;
    }
    .cta-copy p {
    color: var(--text-secondary);
    max-width: 600px;
    font-size: 15px;
    }
    /* FAQ */
    .faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 40px;
    }
    .faq-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: box-shadow 0.2s;
    }
    .faq-item summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 22px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-main);
    font-size: 16px;
    list-style: none;
    gap: 16px;
    }
    .faq-item summary::-webkit-details-marker {
    display: none;
    }
    .faq-item .faq-text {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    line-height: 1.7;
    }
    .faq-item .faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 6px;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 18px;
    line-height: 1;
    transition: transform 0.2s;
    }
    .faq-item details[open] .faq-icon {
    transform: rotate(45deg);
    }
    .faq-aux {
    margin-top: 28px;
    background: #EFF6FA;
    border-radius: 12px;
    padding: 16px 20px;
    color: var(--text-secondary);
    font-size: 14px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    }
    .faq-aux a {
    color: var(--primary);
    font-weight: 500;
    }
    /* breadcrumb  */
    .breadcrumb-area {
    background: #fff;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    }
    .breadcrumb-nav {
    font-size: 14px;
    color: var(--text-secondary);
    }
    .breadcrumb-nav a {
    color: var(--primary);
    margin-right: 6px;
    }
    .breadcrumb-nav i {
    margin-right: 6px;
    color: var(--text-weak);
    font-style: normal;
    }
    .breadcrumb-nav span {
    color: var(--text-main);
    }
    /* intro band */
    .intro-band {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    padding: 28px 28px;
    margin-top: 24px;
    }
    /* nearby section */
    .nearby-links {
    margin-top: 32px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    }
    .nearby-card {
    background: #eef3f8;
    border-radius: var(--radius-card);
    padding: 28px 32px;
    border: 1px solid var(--line);
    transition: 0.2s;
    }
    .nearby-card:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
    }
    .nearby-card h3 {
    font-size: 18px;
    color: var(--primary);
    margin-bottom: 12px;
    }
    .nearby-card p {
    font-size: 14px;
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.7;
    }
    /* footer */
    .site-footer {
    background: var(--footer-bg);
    border-radius: 0;
    }
    .site-footer {
    margin-top: 90px;
    }
    .site-footer .footer-top {
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: 36px;
    padding-top: 60px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--line);
    }
    .site-footer .footer-brand p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-top: 16px;
    font-size: 15px;
    max-width: 340px;
    }
    .site-footer .footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    }
    .footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 16px;
    }
    .footer-col a {
    display: block;
    padding: 4px 0;
    color: var(--text-secondary);
    font-size: 14.5px;
    line-height: 1.8;
    }
    .footer-col a:hover {
    color: var(--primary);
    }
    .footer-note {
    background: rgba(215, 228, 237, 0.4);
    padding: 16px 0;
    font-size: 14px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(220, 227, 234, 0.56);
    }
    .footer-copy {
    padding: 20px 0;
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px;
    }
    .footer-copy .container {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    }
    .footer-copy .container span {
    color: var(--text-weak);
    }
    .footer-copy a {
    color: var(--text-secondary);
    }
    /* details list row */
    .safety-tip-box {
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: 14px;
    border: 1px solid #E1E8EF;
    }
    .safety-tip-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    background: #fff;
    border-radius: 16px;
    border: 1px solid #E1E8EF;
    overflow: hidden;
    }
    .st-item {
    padding: 22px 24px;
    border-bottom: 1px solid #F0F3F7;
    border-right: 1px solid #F0F3F7;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: var(--text-secondary);
    }
    .st-item .check-icon {
    font-style: normal;
    color: var(--restgreen);
    font-weight: 700;
    font-size: 18px;
    line-height: 1.6;
    }
    .link-primary {
    color: var(--primary);
    font-weight: 500;
    }
    /* responsive  */
    @media (max-width: 1199px) {
    .login-steps::before {
    display: none;
    }
    .login-step-item {
    width: 48%;
    margin-bottom: 24px;
    }
    }
    @media (max-width: 991px) {
    .header-inner {
    gap: 24px;
    }
    .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    width: 100%;
    background: #fff;
    flex-direction: column;
    gap: 0;
    padding: 24px 24px 30px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 32px -30px var(--primary);
    transition: all 0.25s;
    }
    .main-nav:not(.open) {
    display: none;
    }
    .main-nav.open {
    display: flex;
    }
    .main-nav .nav-link {
    padding: 14px 8px;
    border-bottom: 0;
    font-size: 17px;
    border-top: 1px solid #F2F5F8;
    }
    .main-nav .nav-link:first-child {
    border-top: 0;
    display: flex;
    }
    .nav-link.active .nav-dot {
    display: inline-block;
    }
    .nav-link.active {
    color: var(--primary);
    }
    .nav-dot {
    width: 6px;
    height: 6px;
    display: none;
    border-radius: 100%;
    background: var(--primary);
    margin-right: 6px;
    }
    .nav-link.active .nav-dot {
    display: inline-flex;
    }
    .main-nav {
    gap: 0;
    }
    .nav-toggle {
    display: flex;
    margin-left: auto;
    }
    .header-cta {
    margin-left: 10px;
    }
    .category-hero .container {
    grid-template-columns: 1fr;
    gap: 28px;
    }
    .env-grid {
    grid-template-columns: 1fr;
    }
    .guide-card {
    width: 100%;
    }
    .guide-grid {
    grid-template-columns: 1fr;
    row-gap: 16px;
    }
    .faq-grid {
    grid-template-columns: 1fr;
    }
    .footer-top {
    grid-template-columns: 1fr;
    row-gap: 44px;
    }
    }
    @media (max-width: 768px) {
    .category-hero {
    padding: 48px 0 40px;
    }
    .category-hero h1 {
    font-size: 30px;
    }
    .container {
    padding-left: 20px;
    padding-right: 20px;
    }
    .brand-word {
    font-size: 17px;
    }
    .header-cta {
    display: none;
    }
    .section-head {
    margin-bottom: 28px;
    }
    .section-head h2 {
    font-size: 27px;
    }
    .login-steps {
    display: block;
    }
    .login-step-item {
    width: 100%;
    margin-bottom: 16px;
    }
    .cta-box {
    padding: 32px 20px;
    }
    .nearby-links {
    grid-template-columns: 1fr;
    }
    .safety-tip-list {
    grid-template-columns: 1fr;
    }
    .st-item {
    border-right: 0;
    }
    .footer-links {
    grid-template-columns: 1fr !important;
    gap: 8px;
    }
    .footer-copy .container {
    flex-direction: column;
    gap: 4px;
    }
    }
    @media (max-width: 600px) {
    .env-imgs {
    min-height: 200px;
    }
    .category-main {
    padding: 60px 0;
    }
    .section-block {
    margin-bottom: 64px;
    }
    .visual-card {
    padding: 22px;
    }
    .hero-security-tip {
    display: none;
    }
    .footer-links {
    grid-template-columns: 1fr;
    }
    .footer-top {
    display: block;
    }
    .footer-brand {
    margin-bottom: 36px;
    }
    .footer-bottom .footer-copy {
    display: block;
    }
    body {
    padding-bottom: 0;
    }
    }
    main {
    min-height: 40vh;
    }
    @media (max-width: 480px) {
    .btn-primary,
    .btn-secondary {
    width: 100%;
    }
    .category-hero h1 {
    font-size: 26px;
    }
    .category-hero-subtitle {
    font-size: 15px;
    }
    .env-content h3 {
    font-size: 20px;
    }
    .device-compare th {
    font-size: 13px;
    padding: 12px 10px;
    }
    .device-compare td {
    padding: 12px 10px;
    }
    }
    @media (max-width: 360px) {
    .brand-word {
    font-size: 17px;
    letter-spacing: 0.2px;
    }
    }

/* roulang page: category2 */
:root {
  --primary: #1B4C73;
  --primary-dark: #0E3454;
  --primary-soft: #DCE9F2;
  --accent: #D97B43;
  --accent-hover: #B5632F;
  --success: #3A8177;
  --danger: #B4473D;
  --bg: #F4F7FA;
  --bg-block: #EAF0F5;
  --card: #FFFFFF;
  --text: #17283A;
  --text-secondary: #5B7184;
  --text-weak: #8AA0B2;
  --border: #E1E8EF;
  --line: #DCE3EA;
  --radius: 12px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(11,33,50,0.06), 0 12px 28px -18px rgba(11,33,50,0.16);
  --shadow-hover: 0 20px 40px -24px rgba(11,33,50,0.22);
  --container: 1200px;
  --space-section: 104px;
  --font-family: "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", Inter, Arial, sans-serif;
}
*, *::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%; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 16px; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.4; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #fff;
  border-bottom: 1px solid #E3E9EF;
}
.site-header.scrolled { box-shadow: 0 8px 24px -20px rgba(11,33,50,0.18); }
.header-inner {
  height: 76px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}
.brand-word {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
  color: var(--text);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-left: 24px;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease;
  white-space: nowrap;
}
.nav-link .nav-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.2s ease;
}
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active .nav-dot { opacity: 1; }
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 8px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: all 0.2s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 8px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 22px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-sm { padding: 8px 14px; font-size: 14px; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 12px 24px -16px rgba(27,76,115,0.5); }
.btn-orange { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-orange:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 12px 24px -16px rgba(217,123,67,0.55); }
.btn-outline { background: transparent; border-color: #B8CAD9; color: var(--primary); }
.btn-outline:hover { background: var(--primary-soft); border-color: var(--primary-soft); }
.header-cta { margin-left: auto; flex-shrink: 0; }
.main-nav a { text-decoration: none; }

.site-main { overflow: hidden; }

.page-hero {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 64px 0 72px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  font-size: 14px;
  color: var(--text-weak);
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 6px;
}
.breadcrumb a { color: var(--text-secondary); transition: color 0.2s ease; }
.breadcrumb a:hover { color: var(--primary); }
.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 48px;
  align-items: center;
}
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: 100px;
  padding: 4px 12px;
  margin-bottom: 16px;
}
.page-hero h1 {
  font-size: 40px;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.page-hero p.lead {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-secondary);
  max-width: 620px;
  margin-bottom: 24px;
}
.hero-action { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.page-hero-visual {
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: var(--bg);
  overflow: hidden;
}
.page-hero-visual img { width: 100%; height: 100%; object-fit: cover; min-height: 260px; }

.section { padding: var(--space-section) 0; }
.section-soft { background: #fff; }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head.right { margin-left: auto; margin-right: 0; text-align: right; }
.section-head .eyebrow { margin-bottom: 10px; }
.section-head h2 { font-size: 32px; letter-spacing: -0.01em; margin-bottom: 10px; }
.section-head p { font-size: 15px; color: var(--text-secondary); margin-bottom: 0; }

.feature-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
.f-col-12 { grid-column: span 12; }
.f-col-6 { grid-column: span 6; }
.f-col-4 { grid-column: span 4; }
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.card-index {
  font-family: Inter, Arial, sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 18px;
}
.card-index i { width: 22px; height: 2px; background: var(--accent); border-radius: 2px; display: inline-block; }
.feature-card h3 { font-size: 21px; margin-bottom: 12px; }
.feature-card p { font-size: 15px; color: var(--text-secondary); margin-bottom: 16px; }
.feature-note {
  background: var(--bg);
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.8;
  border-left: 3px solid var(--primary);
}
.full-feature-card { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, .8fr); gap: 32px; padding: 36px; }
.full-feature-card .illustration {
  background: var(--primary-soft);
  border-radius: 10px;
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.full-feature-card .illustration img { width: 100%; height: 100%; object-fit: cover; }

.check-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 0; margin: 0; list-style: none; }
.check-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 20px 18px 52px;
  position: relative;
  font-size: 15px;
  color: var(--text);
  box-shadow: 0 1px 2px rgba(11,33,50,0.03);
}
.check-item::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 20px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #E5F2EF;
  border: 1px solid #B5D6D0;
}
.check-item::after {
  content: "";
  position: absolute;
  left: 22px;
  top: 25px;
  width: 10px;
  height: 6px;
  border-left: 2px solid var(--success);
  border-bottom: 2px solid var(--success);
  transform: rotate(-45deg);
}

.priority-list { display: grid; gap: 16px; }
.priority-item {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--danger);
  border-radius: 10px;
  padding: 20px 26px;
  display: grid;
  grid-template-columns: 128px 1fr;
  gap: 24px;
  align-items: center;
  box-shadow: var(--shadow);
}
.priority-item.mid { border-left-color: var(--accent); }
.priority-item.normal { border-left-color: var(--success); }
.priority-level { font-size: 14px; font-weight: 600; color: var(--text); }
.priority-item h3 { font-size: 17px; margin-bottom: 4px; }
.priority-item p { font-size: 15px; margin: 0; color: var(--text-secondary); }

.steps-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 22px;
  box-shadow: var(--shadow);
  position: relative;
}
.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 18px;
}
.step-item h3 { font-size: 17px; margin-bottom: 8px; }
.step-item p { font-size: 14px; color: var(--text-secondary); margin: 0; }

.faq-wrap { display: grid; gap: 16px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow .25s ease;
}
.faq-item[open] { box-shadow: var(--shadow); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: color 0.2s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-icon {
  flex: 0 0 24px;
  height: 24px;
  border-radius: 6px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  position: relative;
  transition: transform 0.25s ease, background 0.2s ease, border-color 0.2s ease;
}
.faq-icon::before, .faq-icon::after {
  content: "";
  position: absolute;
  background: var(--primary);
  border-radius: 2px;
}
.faq-icon::before { width: 10px; height: 2px; }
.faq-icon::after { width: 2px; height: 10px; }
.faq-item[open] .faq-icon { transform: rotate(45deg); background: var(--primary-soft); border-color: var(--primary-soft); }
.faq-answer { padding: 0 28px 24px; font-size: 15px; color: var(--text-secondary); line-height: 1.9; }

.cta-zone { padding: 0 0 var(--space-section); }
.cta-panel {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  border: 1px solid var(--border);
  padding: 56px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15,52,84,0.92) 0%, rgba(27,76,115,0.78) 60%, rgba(27,76,115,0.55) 100%);
}
.cta-panel .cta-content,
.cta-panel .cta-action { position: relative; z-index: 2; }
.cta-panel h2 { color: #fff; font-size: 28px; margin-bottom: 10px; }
.cta-panel p { color: rgba(255,255,255,0.86); font-size: 15px; max-width: 640px; margin: 0; }

.site-footer { background: var(--bg-block); border-top: 1px solid var(--border); margin-top: 0; }
.footer-top {
  display: grid;
  grid-template-columns: 1.2fr 1.8fr;
  gap: 48px;
  padding-top: 64px;
  padding-bottom: 40px;
}
.footer-brand p { color: var(--text-secondary); font-size: 14px; line-height: 1.9; max-width: 320px; margin-top: 16px; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer-col h4 { font-size: 14px; margin-bottom: 18px; color: var(--text); font-weight: 600; }
.footer-col a { display: block; color: var(--text-secondary); font-size: 14px; padding: 6px 0; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--primary); }
.footer-note {
  background: #E3ECF3;
  padding: 16px 0;
  font-size: 13px;
  color: var(--text-secondary);
}
.footer-note .container { line-height: 1.8; }
.footer-copy { border-top: 1px solid var(--border); }
.footer-copy .container { display: flex; justify-content: space-between; gap: 16px; padding-top: 18px; padding-bottom: 84px; font-size: 13px; color: var(--text-weak); flex-wrap: wrap; }

@media (max-width: 1199px) {
  .container { padding: 0 24px; }
  .header-inner { gap: 20px; }
  .main-nav { gap: 28px; margin-left: 12px; }
  .full-feature-card { grid-template-columns: 1.1fr .9fr; }
}
@media (max-width: 1023px) {
  .page-hero-grid { grid-template-columns: 1fr; gap: 24px; }
  .page-hero-visual { min-height: 220px; }
  .steps-flow { grid-template-columns: repeat(2, 1fr); }
  .full-feature-card { grid-template-columns: 1fr; }
}
@media (max-width: 767px) {
  .section { --space-section: 72px; }
  .page-hero { padding: 44px 0 56px; }
  .page-hero h1 { font-size: 34px; }
  .header-inner { height: 64px; }
  .nav-toggle { display: flex; }
  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    width: 100%;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 16px 24px 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    margin-left: 0;
  }
  .main-nav.open { display: flex; }
  .nav-link { padding: 10px 0; width: 100%; font-size: 16px; }
  .header-cta { display: none; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .footer-copy .container { justify-content: center; text-align: center; }
}
@media (max-width: 639px) {
  .section { --space-section: 60px; }
  .section-head h2 { font-size: 26px; }
  .feature-grid { grid-template-columns: 1fr; }
  .f-col-12, .f-col-6, .f-col-4 { grid-column: span 1; }
  .feature-card { padding: 24px; }
  .full-feature-card { padding: 24px; }
  .check-grid { grid-template-columns: 1fr; }
  .priority-item { grid-template-columns: 1fr; gap: 8px; padding: 18px 18px 18px 20px; }
  .steps-flow { grid-template-columns: 1fr; }
  .cta-panel { padding: 32px 24px; }
  .footer-links { grid-template-columns: 1fr; }
}

/* roulang page: article */
:root {
    --primary: #1B4C73;
    --primary-dark: #0E3454;
    --primary-light: #DCE9F2;
    --line: #E1E8EF;
    --line-light: #E7EDF3;
    --bg-page: #F4F7FA;
    --bg-card: #FFFFFF;
    --text-main: #17283A;
    --text-secondary: #5B7184;
    --text-weak: #8AA0B2;
    --accent: #D97B43;
    --accent-dark: #B5632F;
    --success: #3A8177;
    --error: #B4473D;
    --radius-card: 12px;
    --radius-btn: 8px;
    --radius-tag: 6px;
    --shadow-sm: 0 1px 2px rgba(11, 33, 50, 0.06), 0 12px 28px -18px rgba(11, 33, 50, 0.16);
    --shadow-hover: 0 20px 40px -24px rgba(11, 33, 50, 0.22);
    --shadow-header: 0 8px 24px -20px rgba(11, 33, 50, 0.16);
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}
body {
    font-family: "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", Inter, Arial, sans-serif;
    background: var(--bg-page);
    color: var(--text-main);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
a {
    color: var(--primary);
    text-decoration: none;
    transition: color .22s ease, background .22s ease, box-shadow .22s ease, border-color .22s ease;
}
a:hover {
    color: var(--primary-dark);
}
img {
    display: block;
    max-width: 100%;
}
button {
    font: inherit;
    border: none;
    background: none;
    cursor: pointer;
    color: inherit;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 46px;
    padding: 0 26px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 500;
    white-space: nowrap;
    border: 1px solid transparent;
    transition: all .22s ease;
}
.btn-primary {
    background: var(--primary);
    color: #FFFFFF;
}
.btn-primary:hover {
    background: var(--primary-dark);
    color: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: 0 10px 24px -12px rgba(27, 76, 115, 0.5);
}
.btn-outline {
    border-color: var(--primary);
    color: var(--primary);
    background: transparent;
}
.btn-outline:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #FFFFFF;
}
.btn-accent {
    background: var(--accent);
    color: #FFFFFF;
}
.btn-accent:hover {
    background: var(--accent-dark);
    color: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: 0 12px 26px -12px rgba(217, 123, 67, 0.55);
}
.btn-sm {
    height: 38px;
    padding: 0 18px;
    font-size: 14px;
    border-radius: 6px;
}
.btn-ghost {
    background: transparent;
    color: var(--primary);
}
.btn-ghost:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
}
a:focus-visible,
button:focus-visible,
.btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: #FFFFFF;
    border-bottom: 1px solid var(--line-light);
    transition: box-shadow .25s ease;
}
.site-header.scrolled {
    box-shadow: var(--shadow-header);
}
.header-inner {
    display: flex;
    align-items: center;
    gap: 28px;
    height: 76px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.brand-mark {
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    background: var(--primary);
    color: #FFFFFF;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: -0.3px;
}
.brand-word {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-main);
    white-space: nowrap;
    letter-spacing: 0.1px;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 38px;
    margin-left: auto;
}
.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}
.nav-link .nav-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: transparent;
    display: block;
    flex: none;
    transition: background .22s ease;
}
.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 4px;
    height: 2px;
    border-radius: 2px;
    background: var(--primary);
    opacity: 0;
    transform: scaleX(0.35);
    transition: opacity .22s ease, transform .22s ease;
}
.nav-link:hover {
    color: var(--primary);
}
.nav-link:hover::after {
    opacity: 0.65;
    transform: scaleX(1);
}
.nav-link.active {
    color: var(--primary);
    font-weight: 600;
}
.nav-link.active .nav-dot {
    background: var(--accent);
}
.header-cta {
    flex-shrink: 0;
}
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 44px;
    height: 44px;
}
.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    transition: transform .25s, opacity .25s;
}
.nav-toggle.nav-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle.nav-open span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.nav-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}
.article-hero {
    position: relative;
    padding: 52px 0 46px;
    background: #EEF3F7;
    border-bottom: 1px solid var(--line);
    overflow: hidden;
}
.article-hero-bg {
    position: absolute;
    inset: 0;
    background-color: #E7EDF3;
    background-size: cover;
    background-position: center;
    opacity: 0.16;
    pointer-events: none;
}
.article-hero .container {
    position: relative;
}
.article-hero-inner {
    max-width: 920px;
}
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--text-weak);
    margin-bottom: 24px;
}
.breadcrumb a {
    color: var(--text-secondary);
}
.breadcrumb a:hover {
    color: var(--primary);
}
.breadcrumb .crumb-sep {
    color: #C4D0DB;
}
.breadcrumb .crumb-current {
    color: var(--text-weak);
    max-width: 360px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.article-head-line {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}
.tag-chip {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 500;
    padding: 5px 14px;
    line-height: 1.4;
}
.article-title {
    font-size: 36px;
    line-height: 1.35;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.2px;
    max-width: 960px;
}
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px 18px;
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 22px;
}
.meta-dot {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: #C3D0DA;
}
.article-body-section {
    padding: 56px 0 72px;
}
.article-card {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    max-width: 860px;
    margin: 0 auto;
    padding: 60px 68px;
}
.cms-content {
    font-size: 16px;
    line-height: 1.95;
    color: var(--text-main);
    overflow-wrap: break-word;
}
.cms-content h1,
.cms-content h2,
.cms-content h3,
.cms-content h4,
.cms-content h5,
.cms-content h6 {
    color: var(--text-main);
    font-weight: 700;
    line-height: 1.5;
    margin-top: 2em;
    margin-bottom: 0.7em;
}
.cms-content h1 {
    font-size: 28px;
}
.cms-content h2 {
    font-size: 25px;
    border-left: 4px solid var(--primary);
    padding-left: 14px;
}
.cms-content h3 {
    font-size: 20px;
}
.cms-content h4 {
    font-size: 17px;
}
.cms-content p {
    margin: 0 0 1.5em;
}
.cms-content ul,
.cms-content ol {
    margin: 0 0 1.6em;
    padding-left: 1.8em;
}
.cms-content ul {
    list-style: disc;
}
.cms-content ol {
    list-style: decimal;
}
.cms-content li {
    margin: 0.35em 0;
}
.cms-content a {
    color: var(--primary);
    border-bottom: 1px solid rgba(27, 76, 115, 0.3);
}
.cms-content a:hover {
    color: var(--primary-dark);
    border-bottom-color: var(--primary-dark);
}
.cms-content blockquote {
    margin: 1.8em 0;
    padding: 18px 24px;
    background: #F2F6FA;
    border-left: 4px solid var(--primary);
    color: var(--text-secondary);
    border-radius: 0 10px 10px 0;
}
.cms-content img {
    margin: 1.8em auto;
    border-radius: 10px;
}
.cms-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    margin: 1.8em 0;
}
.cms-content th,
.cms-content td {
    border: 1px solid var(--line);
    padding: 10px 14px;
    text-align: left;
}
.cms-content th {
    background: #EEF3F7;
    font-weight: 600;
}
.cms-content pre {
    background: #102A3B;
    color: #E7F1F8;
    border-radius: 10px;
    padding: 20px 22px;
    overflow: auto;
    font-size: 14px;
    line-height: 1.7;
    margin: 1.8em 0;
}
.cms-content code {
    font-family: Consolas, "Courier New", monospace;
}
.cms-content pre code {
    background: none;
    padding: 0;
}
.cms-content hr {
    border: 0;
    border-top: 1px solid var(--line);
    margin: 2.2em 0;
}
.article-foot {
    margin-top: 52px;
    padding-top: 28px;
    border-top: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}
.foot-label {
    font-size: 13px;
    color: var(--text-weak);
}
.empty-state {
    max-width: 860px;
    margin: 0 auto;
    background: #FFFFFF;
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    padding: 72px 48px;
    text-align: center;
}
.empty-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: #F1EFF0;
    color: var(--text-secondary);
    font-size: 24px;
    font-weight: 600;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.empty-state p {
    max-width: 520px;
    margin: 0 auto 28px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.9;
}
.empty-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}
.related-section {
    background: #FFFFFF;
    border-top: 1px solid var(--line);
    padding: 80px 0;
}
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 44px;
    flex-wrap: wrap;
}
.eyebrow {
    display: block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 8px;
}
.section-head h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.4;
}
.section-head .section-desc {
    margin-top: 8px;
    font-size: 15px;
    color: var(--text-secondary);
}
.section-head .section-extra {
    flex-shrink: 0;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}
.content-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    overflow: hidden;
    background: #FFFFFF;
    transition: transform .28s ease, box-shadow .28s ease;
}
.content-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}
.card-thumb {
    width: 100%;
    aspect-ratio: 16 / 10;
    background: #E7EDF3;
    overflow: hidden;
}
.card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .35s ease;
}
.content-card:hover .card-thumb img {
    transform: scale(1.04);
}
.card-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
    padding: 24px 26px 26px;
}
.card-tag {
    display: inline-flex;
    align-self: flex-start;
    align-items: center;
    border-radius: 999px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 500;
    padding: 4px 12px;
    line-height: 1.5;
}
.card-title {
    font-size: 18px;
    line-height: 1.55;
    font-weight: 600;
    color: var(--text-main);
}
.content-card:hover .card-title {
    color: var(--primary);
}
.card-summary {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-secondary);
    flex: 1;
}
.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-weak);
    padding-top: 8px;
    border-top: 1px solid #EFF3F6;
    margin-top: 8px;
}
.card-link {
    font-size: 13px;
    color: var(--primary);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.card-link:hover {
    color: var(--accent-dark);
}
.cta-band {
    background: #E6EEF5;
    border-top: 1px solid #D5E0EA;
    border-bottom: 1px solid #D5E0EA;
    padding: 58px 0;
}
.cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    flex-wrap: wrap;
}
.cta-copy h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-main);
}
.cta-copy p {
    margin-top: 10px;
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 580px;
    line-height: 1.8;
}
.site-footer {
    background: #102435;
    color: #9BB2C2;
    padding: 64px 0 0;
}
.site-footer .brand .brand-mark {
    background: rgba(255, 255, 255, 0.16);
    color: #FFFFFF;
}
.site-footer .brand .brand-word {
    color: #FFFFFF;
}
.footer-top {
    display: grid;
    grid-template-columns: 1.1fr 2fr;
    gap: 64px;
    padding-bottom: 48px;
}
.footer-brand p {
    margin-top: 20px;
    font-size: 14px;
    line-height: 1.9;
    color: #8FA7B8;
    max-width: 380px;
}
.footer-links {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
}
.footer-col h4 {
    color: #FFFFFF;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 18px;
    letter-spacing: 0.3px;
}
.footer-col a {
    display: block;
    color: #9BB2C2;
    font-size: 14px;
    line-height: 2.3;
}
.footer-col a:hover {
    color: #FFFFFF;
}
.footer-note {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 13px;
    line-height: 2;
    color: #8CA3B4;
    padding: 16px 0;
}
.footer-copy {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 18px 0;
    color: #7890A1;
    font-size: 13px;
}
.footer-copy .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}
.scroll-spacer {
    height: 64px;
    background: #102435;
}
.sticky-cta {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 90;
    height: 64px;
    background: rgba(255, 255, 255, 0.97);
    border-top: 1px solid var(--line);
    box-shadow: 0 -12px 30px -22px rgba(11, 33, 50, 0.35);
    backdrop-filter: blur(6px);
}
.sticky-cta .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    height: 63px;
}
.sticky-cta p {
    font-size: 14px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
@media (max-width: 1024px) {
    .main-nav {
        gap: 24px;
    }
    .related-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .article-card {
        padding: 48px 44px;
    }
}
@media (max-width: 768px) {
    .header-inner {
        height: 64px;
    }
    .nav-toggle {
        display: inline-flex;
    }
    .header-cta {
        display: none;
    }
    .main-nav {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #FFFFFF;
        border-bottom: 1px solid var(--line);
        padding: 10px 24px 18px;
        box-shadow: 0 28px 48px -36px rgba(11, 33, 50, 0.4);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: opacity .25s ease, transform .25s ease, visibility .25s;
    }
    .main-nav.open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    .nav-link {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 13px 2px;
        border-bottom: 1px solid #EFF3F7;
    }
    .nav-link::after {
        display: none;
    }
    .nav-link:last-child {
        border-bottom: 0;
    }
    .nav-link.active {
        color: var(--primary);
    }
    .article-hero {
        padding: 40px 0 36px;
    }
    .article-title {
        font-size: 29px;
    }
    .article-body-section {
        padding: 40px 0 56px;
    }
    .article-card {
        padding: 32px 28px;
        border-radius: 14px;
    }
    .related-section {
        padding: 58px 0;
    }
    .related-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .footer-top {
        grid-template-columns: 1fr;
        gap: 40px;
        padding-bottom: 40px;
    }
    .footer-links {
        gap: 24px;
    }
    .cta-inner {
        flex-direction: column;
        align-items: flex-start;
    }
    .container {
        padding: 0 20px;
    }
}
@media (max-width: 560px) {
    .article-title {
        font-size: 25px;
    }
    .article-meta {
        font-size: 13px;
        gap: 8px 14px;
    }
    .article-hero-inner {
        padding: 0;
    }
    .article-card {
        padding: 24px 20px;
    }
    .cms-content h2 {
        font-size: 21px;
    }
    .breadcrumb .crumb-current {
        max-width: 190px;
    }
    .footer-links {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .empty-state {
        padding: 52px 22px;
    }
    .sticky-cta {
        height: 60px;
    }
    .sticky-cta .container {
        height: 59px;
        padding: 0 16px;
    }
    .sticky-cta .btn {
        height: 38px;
        padding: 0 16px;
        font-size: 14px;
    }
    .section-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
    }
}

/* roulang page: category3 */
:root {
  --primary: #1B4C73;
  --primary-deep: #0E3454;
  --primary-light: #DCE9F2;
  --line: #DCE3EA;
  --line-strong: #E1E8EF;
  --bg: #F4F7FA;
  --white: #FFFFFF;
  --text: #17283A;
  --muted: #5B7184;
  --weak: #8AA0B2;
  --accent: #D97B43;
  --accent-hover: #B5632F;
  --success: #3A8177;
  --success-bg: #E6F1F0;
  --warning-bg: #FCEFDD;
  --danger: #B4473D;
  --danger-bg: #F8E9E7;
  --shadow-sm: 0 1px 2px rgba(11, 33, 50, 0.06);
  --shadow-md: 0 12px 28px -18px rgba(11, 33, 50, 0.16);
  --shadow-lg: 0 20px 40px -24px rgba(11, 33, 50, 0.22);
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --radius-round: 999px;
  --container: 1200px;
  --space-section: 96px;
  --font-sans: "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", Inter, Arial, sans-serif;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body, h1, h2, h3, p, ul, ol, figure, blockquote, dl, dd {
  margin: 0;
}
ul, ol {
  list-style: none;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
  background: none;
  border: none;
  cursor: pointer;
}
input, select, textarea {
  font-family: inherit;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  transition: background .22s ease, border-color .22s ease, color .22s ease, box-shadow .22s ease, transform .18s ease;
}
.btn:hover {
  transform: translateY(-1px);
}
.btn:active {
  transform: translateY(0);
}
.btn-primary {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 8px 18px -12px rgba(27, 76, 115, .55);
}
.btn-primary:hover {
  background: var(--primary-deep);
  box-shadow: 0 14px 24px -14px rgba(27, 76, 115, .65);
}
.btn-accent {
  background: var(--accent);
  color: #FFFFFF;
  box-shadow: 0 8px 18px -12px rgba(217, 123, 67, .55);
}
.btn-accent:hover {
  background: var(--accent-hover);
  box-shadow: 0 14px 26px -14px rgba(217, 123, 67, .68);
}
.btn-outline {
  background: transparent;
  border-color: #C3D0DD;
  color: var(--primary);
}
.btn-outline:hover {
  background: #EAF1F7;
  border-color: #9BB2C6;
  color: var(--primary-deep);
}
.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, .55);
  color: #FFFFFF;
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, .12);
  border-color: rgba(255, 255, 255, .8);
}
.btn-sm {
  padding: 9px 14px;
  font-size: 14px;
}
.btn-ghost {
  background: #EEF2F6;
  color: var(--primary-deep);
}
.btn-ghost:hover {
  background: #E0E8F0;
}
.section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}
.section-head {
  max-width: 760px;
  margin-bottom: 44px;
}
.section-eyebrow,
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--primary);
  background: #EAF1F7;
  border: 1px solid #D8E4EE;
  border-radius: var(--radius-round);
  padding: 5px 12px;
  margin-bottom: 12px;
}
.section-title {
  font-size: 30px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--primary-deep);
  letter-spacing: -0.01em;
}
.section-desc {
  margin-top: 14px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
  max-width: 720px;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  transition: color .2s ease;
}
.text-link:hover {
  color: var(--accent);
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.5;
}
.tag-update {
  background: #E8F1F8;
  color: #1B4C73;
}
.tag-alert {
  background: #FCEFDD;
  color: #9F5D27;
}
.tag-access {
  background: #E7F1EF;
  color: #2E6E64;
}
.tag-feature {
  background: #EEF2F6;
  color: #314B60;
}
.tag-secondary {
  background: #EAF2F0;
  color: var(--primary);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .96);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid #E3E9EF;
  transition: box-shadow .25s ease;
}
.site-header.scrolled {
  box-shadow: 0 8px 24px -20px rgba(11, 33, 50, .30);
}
.header-inner {
  display: flex;
  align-items: center;
  min-height: 76px;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
}
.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--primary);
  color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .02em;
  flex: none;
}
.brand-word {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 38px;
  margin-left: 32px;
  flex: 1;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 28px 0 22px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
  transition: color .2s ease;
}
.nav-link:hover {
  color: var(--primary);
}
.nav-link:hover::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 12px;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--primary-light);
}
.nav-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: transparent;
  flex: none;
}
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active .nav-dot {
  background: var(--accent);
}
.nav-link.active:hover::after {
  background: transparent;
}
.header-cta {
  flex: none;
}
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #EEF2F6;
  flex-direction: column;
  gap: 4px;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary-deep);
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Page hero */
.page-hero {
  position: relative;
  padding: 72px 0 84px;
  background-color: #F4F7FA;
  background-image: linear-gradient(94deg, rgba(244, 247, 250, .30) 0%, rgba(244, 247, 250, .94) 72%), url('/assets/images/backpic/back-1.png');
  background-position: center;
  background-size: cover;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--weak);
  margin-bottom: 26px;
}
.breadcrumb a {
  color: var(--muted);
  transition: color .2s ease;
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb-sep {
  color: #C2D0DA;
  margin: 0 4px;
}
.hero-inner {
  max-width: 820px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(255, 255, 255, .86);
  border: 1px solid #D9E4EE;
  border-radius: var(--radius-round);
  padding: 6px 14px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}
.hero-title {
  font-size: 44px;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--primary-deep);
  margin-bottom: 18px;
}
.hero-lead {
  max-width: 720px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 30px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.hero-hint {
  margin-top: 18px;
  font-size: 13px;
  color: var(--weak);
}
.hero-hint strong {
  color: var(--muted);
  font-weight: 600;
}

/* Timeline */
.timeline-section {
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.timeline {
  position: relative;
  max-width: 860px;
  margin-top: 40px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: #D8E1EA;
}
.timeline-item {
  position: relative;
  padding-left: 56px;
  margin-bottom: 32px;
}
.timeline-item:last-child {
  margin-bottom: 0;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  width: 19px;
  height: 19px;
  border: 2px solid var(--primary);
  border-radius: 50%;
  background: #FFFFFF;
  box-shadow: 0 0 0 4px rgba(27, 76, 115, .08);
}
.timeline-card {
  display: block;
  background: var(--white);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .25s ease, transform .25s ease, border-color .2s ease;
}
.timeline-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: #B8CBDC;
}
.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-bottom: 10px;
}
.timeline-date {
  font-size: 13px;
  color: var(--weak);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}
.timeline-title {
  font-size: 17px;
  font-weight: 650;
  color: var(--text);
  line-height: 1.55;
}
.timeline-desc {
  margin-top: 8px;
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
}
.timeline-link {
  margin-top: 12px;
}

/* Feature cards */
.feature-section {
  background: var(--bg);
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .25s ease, transform .25s ease, border-color .2s ease;
}
.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: #B8CADD;
}
.feature-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #E7EDF3;
}
.feature-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease;
}
.feature-card:hover .feature-media img {
  transform: scale(1.03);
}
.feature-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 24px;
}
.feature-body .tag {
  align-self: flex-start;
  margin-bottom: 12px;
}
.feature-card-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--primary-deep);
  margin-bottom: 10px;
  line-height: 1.5;
}
.feature-card-desc {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
  flex: 1;
}
.feature-card-link {
  margin-top: 20px;
}

/* Status and check section */
.panel-section {
  background: #EAF0F5;
  border-top: 1px solid #D9E2EB;
  border-bottom: 1px solid #D9E2EB;
}
.two-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.info-panel {
  background: var(--white);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
}
.info-panel h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-deep);
  margin-bottom: 16px;
}
.check-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: none;
}
.check-dot.success {
  background: var(--success);
}
.check-dot.warning {
  background: var(--accent);
}
.list-safe {
  display: grid;
  gap: 10px;
}
.list-safe li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  color: #324A5D;
  line-height: 1.7;
}
.list-safe li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  opacity: .8;
}
.list-safe.gray li::before {
  background: #9DB3C5;
}
.panel-note {
  margin-top: 20px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: #F0F5F9;
  border: 1px solid #DCE6EF;
  font-size: 14px;
  color: var(--muted);
}
.panel-note strong {
  color: var(--primary);
}
.panel-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* FAQ */
.faq-section {
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.faq-list {
  max-width: 860px;
}
.faq-item {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--white);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow .2s ease, border-color .2s ease;
}
.faq-item:hover {
  border-color: #B8C9DA;
  box-shadow: var(--shadow-md);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 22px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.6;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-icon {
  position: relative;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: #EAF1F7;
  flex: none;
  transition: background .2s ease, transform .25s ease;
}
.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  transition: background .2s ease;
}
.faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}
.faq-item[open] {
  border-color: #B5CBE0;
  box-shadow: 0 16px 30px -22px rgba(27, 76, 115, .28);
}
.faq-item[open] .faq-icon {
  background: var(--primary);
}
.faq-item[open] .faq-icon::before,
.faq-item[open] .faq-icon::after {
  background: #FFFFFF;
}
.faq-item[open] .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 22px 20px;
  font-size: 15px;
  color: var(--muted);
  line-height: 1.9;
  border-top: 1px solid #E9EEF3;
  margin-top: 2px;
}
.faq-answer p {
  padding-top: 18px;
}

/* CTA panel */
.cta-section {
  background: var(--bg);
}
.cta-panel {
  position: relative;
  background: var(--primary-deep);
  border-radius: 16px;
  padding: 52px 56px;
  overflow: hidden;
  color: #FFFFFF;
}
.cta-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  opacity: .10;
}
.cta-panel-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}
.cta-panel h2 {
  font-size: 28px;
  line-height: 1.4;
  font-weight: 700;
  margin-bottom: 12px;
}
.cta-panel p {
  color: rgba(255, 255, 255, .78);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 28px;
}
.cta-panel .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Quick bottom bar */
.quick-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  height: 64px;
  background: rgba(255, 255, 255, .96);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border-top: 1px solid #E0E7EE;
  box-shadow: 0 -8px 30px -20px rgba(11, 33, 50, .22);
}
.quick-bar-inner {
  max-width: var(--container);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.quick-bar-text {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.5;
}
.quick-bar-text strong {
  color: var(--text);
  font-weight: 600;
}
.quick-bar-actions {
  display: flex;
  gap: 10px;
  flex: none;
}

/* Footer */
.site-footer {
  background: #EAF0F5;
  border-top: 1px solid #DAE3EC;
  margin-bottom: 64px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.3fr 2fr;
  gap: 48px;
  padding: 64px 0 42px;
}
.footer-brand .brand-word {
  color: var(--primary-deep);
}
.footer-brand p {
  margin-top: 16px;
  max-width: 380px;
  font-size: 14px;
  line-height: 1.8;
  color: #5B7184;
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary-deep);
  margin-bottom: 14px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: #5B7184;
  padding: 5px 0;
  transition: color .2s ease, padding-left .2s ease;
}
.footer-col a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-note {
  background: #DDECF4;
  border-top: 1px solid #CFE1EB;
}
.footer-note .container {
  padding-top: 14px;
  padding-bottom: 14px;
  color: #3C5266;
  font-size: 13px;
  line-height: 1.8;
  text-align: center;
}
.footer-copy {
  background: #D5E3EC;
}
.footer-copy .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px 24px;
  padding-top: 14px;
  padding-bottom: 14px;
  color: #476176;
  font-size: 13px;
}
.footer-copy span:first-child {
  font-weight: 600;
  color: #2F4A60;
}

/* Responsive */
@media (max-width: 1199px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 1023px) {
  .header-inner {
    flex-wrap: wrap;
    min-height: 64px;
  }
  .main-nav {
    display: none;
    position: relative;
    order: 9;
    flex: 0 0 100%;
    width: 100%;
    margin-left: -24px;
    margin-right: -24px;
    padding: 6px 24px 18px;
    background: rgba(255, 255, 255, .98);
    border-top: 1px solid #E3E9EF;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }
  .main-nav.open {
    display: flex;
  }
  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }
  .header-cta {
    display: none;
  }
  .nav-link {
    padding: 13px 0;
    border-bottom: 1px solid #EEF2F6;
  }
  .nav-link:last-child {
    border-bottom: none;
  }
  .nav-link:hover::after {
    display: none;
  }
  .page-hero {
    padding: 56px 0 64px;
  }
  .section {
    --space-section: 72px;
  }
  .cta-panel {
    padding: 40px 32px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-top: 48px;
  }
}
@media (max-width: 767px) {
  .brand-word {
    font-size: 15px;
  }
  .brand-mark {
    width: 28px;
    height: 28px;
    font-size: 12px;
    border-radius: 6px;
  }
  .page-hero {
    padding: 44px 0 52px;
    background-image: linear-gradient(180deg, rgba(244, 247, 250, .95) 0%, rgba(255, 255, 255, .88) 100%), url('/assets/images/backpic/back-2.png');
  }
  .hero-title {
    font-size: 34px;
  }
  .hero-lead {
    font-size: 16px;
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
  .two-panel {
    grid-template-columns: 1fr;
  }
  .timeline-item {
    padding-left: 42px;
  }
  .timeline-card {
    padding: 18px;
  }
  .cta-panel {
    padding: 36px 22px;
    border-radius: 14px;
  }
  .quick-bar {
    height: 60px;
  }
  .quick-bar-inner {
    padding: 0 16px;
  }
  .quick-bar-text {
    font-size: 12px;
  }
  .quick-bar-actions .btn {
    padding: 8px 10px;
    font-size: 13px;
  }
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }
  .site-footer {
    margin-bottom: 60px;
  }
}
@media (max-width: 520px) {
  .footer-top {
    padding: 40px 0 28px;
  }
  .footer-links {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .quick-bar-text {
    max-width: 46%;
  }
  .quick-bar-actions .btn-outline {
    display: none;
  }
}