:root {
    --primary: #B93A4A;
    --primary-soft: #D9828D;
    --ink: #2B2528;
    --text: #332D2F;
    --muted: #756B6E;
    --bg: #FFF9F7;
    --bg-alt: #F6ECEB;
    --accent: #E45B4F;
    --line: #E7D8D7;
    --white: #FFFFFF;
    --shadow: 0 18px 50px rgba(81, 42, 49, .10);
    --radius-lg: 28px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --shell: min(1180px, calc(100% - 40px));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif; line-height: 1.75; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:hover { color: var(--accent); }
button, input { font: inherit; }
button { cursor: pointer; }
.shell { width: var(--shell); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 200; background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 8px; }
.skip-link:focus { top: 16px; }
.site-header { position: sticky; top: 0; z-index: 80; background: rgba(255, 249, 247, .94); border-bottom: 1px solid rgba(185, 58, 74, .12); backdrop-filter: blur(14px); }
.header-inner { min-height: 82px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 22px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); text-decoration: none; min-width: 180px; }
.brand img { width: 48px; height: 48px; object-fit: contain; border-radius: 14px; }
.brand-copy { display: grid; line-height: 1.2; gap: 5px; }
.brand-copy strong { font-size: 1.08rem; letter-spacing: .02em; }
.brand-copy small { color: var(--muted); font-size: .75rem; }
.primary-nav ul { list-style: none; padding: 0; margin: 0; display: flex; justify-content: center; gap: 2px; }
.primary-nav a { display: block; padding: 10px 11px; border-radius: 10px; text-decoration: none; color: var(--text); font-size: .92rem; white-space: nowrap; }
.primary-nav a:hover, .primary-nav a.is-active { background: var(--bg-alt); color: var(--primary); }
.search-open, .nav-toggle { border: 1px solid var(--line); background: var(--white); color: var(--ink); border-radius: 999px; padding: 9px 14px; }
.search-open:hover, .nav-toggle:hover { border-color: var(--primary-soft); color: var(--primary); }
.nav-toggle { display: none; }
.search-modal[hidden] { display: none !important; }
.search-modal { position: fixed; inset: 0; z-index: 150; display: grid; place-items: start center; padding-top: max(8vh, 50px); }
.search-backdrop { position: absolute; inset: 0; background: rgba(43, 37, 40, .58); }
.search-panel { position: relative; width: min(680px, calc(100% - 32px)); background: var(--bg); border-radius: var(--radius-lg); padding: 36px; box-shadow: 0 30px 90px rgba(0,0,0,.22); }
.search-close { position: absolute; top: 16px; right: 18px; border: 0; background: transparent; font-size: 2rem; color: var(--muted); line-height: 1; }
.modal-open { overflow: hidden; }
.search-form label { display: block; font-weight: 700; margin-bottom: 10px; }
.search-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
.search-row input { min-width: 0; border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; background: #fff; color: var(--text); }
.search-hint { color: var(--muted); font-size: .9rem; margin-bottom: 0; }
main { min-height: 60vh; }
.eyebrow { color: var(--primary); font-size: .78rem; letter-spacing: .16em; text-transform: uppercase; font-weight: 800; margin: 0 0 9px; }
.hero { padding: clamp(52px, 8vw, 100px) 0 68px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); gap: clamp(36px, 6vw, 76px); align-items: center; }
.hero h1, .page-hero h1 { color: var(--ink); font-size: clamp(2.25rem, 5.8vw, 4.8rem); line-height: 1.08; letter-spacing: -.035em; margin: 0 0 22px; }
.hero .lead, .page-hero .lead { color: var(--muted); font-size: clamp(1.05rem, 1.6vw, 1.25rem); max-width: 780px; margin: 0; }
.hero-actions { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 18px; border-radius: 999px; border: 1px solid transparent; text-decoration: none; font-weight: 700; }
.button-primary { background: var(--accent); color: #fff; }
.button-primary:hover { background: #c9483f; color: #fff; }
.button-secondary { background: transparent; border-color: var(--line); color: var(--ink); }
.button-secondary:hover { border-color: var(--primary-soft); color: var(--primary); }
.hero-visual { position: relative; }
.hero-visual img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 36px 36px 16px 36px; box-shadow: var(--shadow); }
.hero-note { position: absolute; right: -14px; bottom: -22px; width: min(290px, 78%); background: var(--ink); color: #fff; padding: 18px 20px; border-radius: 18px; box-shadow: var(--shadow); }
.hero-note strong { display: block; margin-bottom: 5px; }
.hero-note span { color: #eadfe2; font-size: .9rem; }
.section { padding: 74px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--ink); color: #f9efef; }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 32px; }
.section-head > div { max-width: 760px; }
.section h2 { color: var(--ink); font-size: clamp(1.7rem, 3vw, 2.6rem); line-height: 1.22; margin: 0 0 10px; letter-spacing: -.02em; }
.section-head p, .section-intro { color: var(--muted); margin: 0; }
.section-dark .section-head p, .section-dark .section-intro { color: #d8cacc; }
.topic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.topic-card { display: grid; background: var(--white); border: 1px solid var(--line); border-radius: 22px; overflow: hidden; min-width: 0; }
.topic-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.topic-card-content { padding: 22px; }
.topic-card h3 { margin: 0 0 10px; color: var(--ink); font-size: 1.25rem; line-height: 1.35; }
.topic-card p { color: var(--muted); margin: 0 0 18px; }
.text-link { font-weight: 750; text-decoration: none; }
.editorial-band { display: grid; grid-template-columns: .8fr 1.2fr; gap: 34px; align-items: stretch; }
.editorial-image img { width: 100%; height: 100%; min-height: 420px; object-fit: cover; border-radius: 28px; }
.editorial-copy { background: var(--white); border: 1px solid var(--line); border-radius: 28px; padding: clamp(28px, 5vw, 52px); }
.editorial-copy h2 { margin-top: 0; }
.editorial-copy ul, .prose ul, .prose ol { padding-left: 1.3rem; }
.editorial-copy li + li, .prose li + li { margin-top: 10px; }
.route-list { display: grid; gap: 1px; border: 1px solid var(--line); border-radius: 22px; overflow: hidden; background: var(--line); }
.route-item { display: grid; grid-template-columns: 58px 1fr auto; gap: 18px; align-items: center; background: var(--white); padding: 22px; text-decoration: none; color: var(--text); }
.route-item:hover { background: #fffdfc; }
.route-number { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 50%; background: var(--bg-alt); color: var(--primary); font-weight: 800; }
.route-item strong { color: var(--ink); display: block; margin-bottom: 3px; }
.route-item span { color: var(--muted); }
.route-arrow { color: var(--primary); font-size: 1.4rem; }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.guide-card { padding: 24px; border-top: 3px solid var(--primary-soft); background: var(--white); border-radius: 0 0 20px 20px; box-shadow: 0 10px 30px rgba(88, 46, 51, .06); }
.guide-card .tag { display: inline-block; font-size: .76rem; color: var(--primary); background: var(--bg-alt); border-radius: 999px; padding: 4px 9px; margin-bottom: 12px; }
.guide-card h3 { margin: 0 0 8px; color: var(--ink); }
.guide-card p { color: var(--muted); }
.note-box { border-left: 4px solid var(--accent); background: #fff3ef; padding: 18px 20px; border-radius: 0 14px 14px 0; }
.note-box strong { color: var(--ink); }
.fact-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.fact { padding: 22px; border-radius: 18px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12); }
.fact strong { display: block; color: #fff; margin-bottom: 5px; }
.fact span { color: #dccfd1; font-size: .92rem; }
.page-hero { padding: 54px 0 46px; }
.page-hero-inner { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(260px, .75fr); gap: 50px; align-items: end; }
.page-hero h1 { font-size: clamp(2rem, 4.8vw, 4rem); }
.page-hero-media img { width: 100%; aspect-ratio: 16 / 11; object-fit: cover; border-radius: 30px 30px 12px 30px; }
.breadcrumbs { padding-top: 24px; }
.breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0; color: var(--muted); font-size: .9rem; }
.breadcrumbs li:not(:last-child)::after { content: '›'; margin-left: 8px; color: #a99a9d; }
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.content-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 50px; align-items: start; }
.prose { font-size: 1.02rem; }
.prose h2 { margin: 2.3em 0 .7em; font-size: 1.8rem; line-height: 1.3; color: var(--ink); }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 1.8em 0 .5em; color: var(--ink); }
.prose p { margin: 0 0 1.2em; }
.prose blockquote { margin: 26px 0; padding: 18px 22px; background: var(--bg-alt); border-left: 4px solid var(--primary); border-radius: 0 14px 14px 0; color: var(--ink); }
.sidebar { position: sticky; top: 106px; display: grid; gap: 18px; }
.sidebar-card { background: var(--white); border: 1px solid var(--line); border-radius: 18px; padding: 20px; }
.sidebar-card h2, .sidebar-card h3 { font-size: 1rem; margin: 0 0 12px; color: var(--ink); }
.sidebar-card ul { padding: 0; margin: 0; list-style: none; display: grid; gap: 9px; }
.sidebar-card a { text-decoration: none; }
.checklist { counter-reset: steps; display: grid; gap: 18px; margin: 26px 0; }
.check-step { counter-increment: steps; display: grid; grid-template-columns: 52px 1fr; gap: 16px; align-items: start; background: var(--white); border: 1px solid var(--line); border-radius: 18px; padding: 20px; }
.check-step::before { content: counter(steps); width: 40px; height: 40px; display: grid; place-items: center; border-radius: 50%; background: var(--primary); color: #fff; font-weight: 800; }
.check-step h3 { margin: 0 0 4px; }
.check-step p { margin: 0; color: var(--muted); }
.compare-table { width: 100%; border-collapse: collapse; margin: 24px 0; background: var(--white); }
.compare-table th, .compare-table td { padding: 14px 16px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.compare-table th { background: var(--bg-alt); color: var(--ink); }
.faq-list { display: grid; gap: 12px; }
.faq-item { border: 1px solid var(--line); border-radius: 16px; background: var(--white); overflow: hidden; }
.faq-question { width: 100%; border: 0; background: transparent; color: var(--ink); text-align: left; padding: 18px 52px 18px 20px; font-weight: 760; position: relative; }
.faq-question::after { content: '+'; position: absolute; right: 20px; top: 15px; color: var(--primary); font-size: 1.35rem; }
.faq-question[aria-expanded="true"]::after { content: '−'; }
.faq-answer { padding: 0 20px 20px; color: var(--muted); }
.faq-answer p { margin: 0; }
.search-results { display: grid; gap: 12px; }
.search-result { padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: var(--white); }
.search-result h2 { font-size: 1.2rem; margin: 0 0 7px; }
.search-result p { color: var(--muted); margin: 0; }
.empty-state { text-align: center; padding: 48px 24px; background: var(--bg-alt); border-radius: 22px; }
.empty-state h2 { margin-top: 0; }
.site-footer { background: var(--ink); color: #d8cacc; padding: 58px 0 20px; margin-top: 60px; }
.footer-grid { display: grid; grid-template-columns: 1.45fr repeat(3, 1fr); gap: 36px; }
.footer-grid h2 { color: #fff; font-size: 1rem; margin: 0 0 14px; }
.footer-grid p { max-width: 460px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 7px; }
.footer-grid a { color: #eadfe2; text-decoration: none; }
.footer-grid a:hover { color: #fff; }
.footer-brand { color: #fff !important; font-size: 1.35rem; font-weight: 800; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 34px; padding-top: 18px; display: flex; justify-content: space-between; gap: 20px; align-items: center; font-size: .88rem; }
.footer-bottom p { margin: 0; }
.back-top { color: #fff; white-space: nowrap; }
.kicker-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.kicker-list span { border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; color: var(--muted); background: rgba(255,255,255,.55); font-size: .85rem; }
.callout-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.callout { background: var(--white); border: 1px solid var(--line); border-radius: 20px; padding: 24px; }
.callout h3 { margin-top: 0; color: var(--ink); }
.timeline { border-left: 2px solid var(--line); margin-left: 12px; padding-left: 28px; display: grid; gap: 28px; }
.timeline-item { position: relative; }
.timeline-item::before { content: ''; position: absolute; left: -36px; top: 8px; width: 14px; height: 14px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 5px var(--bg-alt); }
.timeline-item h3 { margin: 0 0 6px; }
.timeline-item p { margin: 0; color: var(--muted); }
.split-highlight { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.split-panel { padding: 28px; border-radius: 22px; }
.split-panel.light { background: var(--white); border: 1px solid var(--line); }
.split-panel.tint { background: var(--bg-alt); }
.split-panel h3 { margin-top: 0; }
.meta-line { display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--muted); font-size: .9rem; margin-top: 18px; }
@media (max-width: 1100px) {
    .header-inner { grid-template-columns: auto auto 1fr auto; }
    .nav-toggle { display: inline-flex; justify-self: end; }
    .primary-nav { position: absolute; left: 20px; right: 20px; top: 74px; background: var(--bg); border: 1px solid var(--line); border-radius: 18px; padding: 12px; box-shadow: var(--shadow); display: none; }
    .primary-nav.is-open { display: block; }
    .primary-nav ul { display: grid; grid-template-columns: repeat(2, 1fr); }
    .search-open { justify-self: end; }
    .topic-grid, .guide-grid { grid-template-columns: repeat(2, 1fr); }
    .topic-card:last-child, .guide-card:last-child { grid-column: 1 / -1; }
    .fact-strip { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
    .hero-grid, .page-hero-inner, .editorial-band, .content-layout { grid-template-columns: 1fr; }
    .hero-visual { max-width: 720px; }
    .page-hero-media { max-width: 620px; }
    .sidebar { position: static; grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 700px) {
    :root { --shell: min(100% - 28px, 1180px); }
    .header-inner { min-height: 72px; gap: 10px; grid-template-columns: 1fr auto auto; }
    .brand-copy small { display: none; }
    .brand img { width: 42px; height: 42px; }
    .search-open { font-size: 0; padding: 9px 12px; }
    .search-open::before { content: '搜索'; font-size: .9rem; }
    .primary-nav { left: 14px; right: 14px; top: 68px; }
    .primary-nav ul { grid-template-columns: 1fr; }
    .hero { padding-top: 42px; }
    .hero h1, .page-hero h1 { font-size: clamp(2.05rem, 12vw, 3.4rem); }
    .hero-note { position: static; width: auto; margin: -14px 12px 0; border-radius: 16px; }
    .section { padding: 54px 0; }
    .section-head { display: block; }
    .topic-grid, .guide-grid, .callout-grid, .split-highlight, .sidebar { grid-template-columns: 1fr; }
    .topic-card:last-child, .guide-card:last-child { grid-column: auto; }
    .route-item { grid-template-columns: 48px 1fr; }
    .route-arrow { display: none; }
    .fact-strip { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid > div:first-child { grid-column: 1 / -1; }
    .footer-bottom { align-items: flex-start; }
    .search-panel { padding: 30px 20px 22px; }
    .search-row { grid-template-columns: 1fr; }
    .compare-table { display: block; overflow-x: auto; }
}
@media (max-width: 460px) {
    .brand-copy strong { font-size: .98rem; }
    .nav-toggle { padding-inline: 11px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-grid > div:first-child { grid-column: auto; }
    .footer-bottom { display: grid; }
    .check-step { grid-template-columns: 44px 1fr; padding: 17px; }
}