:root {
    --bg: #f7f5ef;
    --panel: #ffffff;
    --ink: #1f2937;
    --muted: #667085;
    --brand: #8a5a2b;
    --brand-dark: #5b371d;
    --line: #e7dfd2;
    --soft: #fbf8f1;
    --shadow: 0 18px 45px rgba(46, 35, 25, 0.10);
    --radius: 22px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.site-header { background: rgba(255,255,255,0.92); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; backdrop-filter: blur(16px); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 16px 0 12px; }
.brand-logo { display: inline-flex; align-items: center; gap: 12px; min-width: max-content; }
.brand-logo strong { display: block; font-size: 20px; letter-spacing: 0.05em; }
.brand-logo em { display: block; font-style: normal; color: var(--muted); font-size: 13px; }
.main-nav { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.main-nav a { padding: 8px 12px; border-radius: 999px; color: #344054; font-size: 14px; }
.main-nav a:hover { background: var(--soft); color: var(--brand-dark); }
.search-strip { padding-bottom: 14px; }
.fake-search { border: 1px solid var(--line); background: var(--soft); border-radius: 18px; padding: 12px; }
.fake-search label { display: block; color: var(--brand-dark); font-weight: 700; margin-bottom: 8px; }
.search-row { display: flex; gap: 10px; }
.search-row input { flex: 1; border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; font: inherit; background: #fff; }
.search-row button, .btn { border: 0; border-radius: 999px; padding: 12px 18px; background: var(--brand); color: #fff; font-weight: 700; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; box-shadow: 0 10px 24px rgba(138,90,43,0.18); }
.search-row button:hover, .btn:hover { background: var(--brand-dark); }
.search-message { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.btn-secondary { background: #efe2d3; color: var(--brand-dark); box-shadow: none; }
.btn-light { background: #fff; color: var(--brand-dark); }
.breadcrumb { padding: 18px 0 0; display: flex; gap: 8px; color: var(--muted); font-size: 14px; }
.breadcrumb a:hover { color: var(--brand-dark); }
.hero { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr); gap: 34px; align-items: center; padding: 44px 0 58px; }
.hero-copy h1, .page-hero h1 { font-size: clamp(34px, 5vw, 60px); line-height: 1.12; margin: 8px 0 18px; letter-spacing: -0.04em; }
.hero-lead, .page-hero p { font-size: 18px; color: #475467; margin: 0 0 22px; }
.eyebrow { margin: 0; color: var(--brand); font-weight: 800; letter-spacing: 0.08em; font-size: 14px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0; }
.trust-list, .check-list { padding: 0; margin: 18px 0 0; list-style: none; }
.trust-list li, .check-list li { position: relative; padding-left: 24px; margin: 8px 0; color: #475467; }
.trust-list li::before, .check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--brand); font-weight: 900; }
.image-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); margin: 0; }
.image-card figcaption { padding: 12px 16px; color: var(--muted); font-size: 13px; }
.hero-card { position: relative; }
.stats-panel { display: flex; gap: 8px; flex-wrap: wrap; padding: 0 16px 16px; }
.stats-panel span { background: var(--soft); border: 1px solid var(--line); color: var(--brand-dark); padding: 6px 10px; border-radius: 999px; font-size: 13px; font-weight: 700; }
.section { padding: 64px 0; }
.section-muted { background: #f1eadf; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 760px; margin-bottom: 26px; }
.section-head h2, .split h2, .contact-box h2, .site-footer h2 { font-size: clamp(26px, 3vw, 38px); line-height: 1.2; margin: 8px 0 12px; }
.section-head p, .split p, .contact-box p { color: var(--muted); margin: 0; }
.card-grid { display: grid; gap: 18px; }
.card-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.info-card, .review-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: 0 12px 32px rgba(46,35,25,0.06); }
.info-card.soft { background: rgba(255,255,255,0.72); }
.info-card h2, .info-card h3, .review-card h3 { margin: 0 0 10px; font-size: 20px; }
.info-card p, .review-card p { margin: 0 0 12px; color: var(--muted); }
.info-card strong { color: var(--brand-dark); }
.video-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.video-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.video-frame { position: relative; aspect-ratio: 16 / 10; background: #21170f; overflow: hidden; }
.video-frame video { width: 100%; height: 100%; object-fit: cover; display: block; }
.play-button { position: absolute; inset: 50% auto auto 50%; transform: translate(-50%, -50%) scale(0.92); width: 58px; height: 58px; border-radius: 50%; border: 0; background: rgba(255,255,255,0.92); color: var(--brand-dark); cursor: pointer; opacity: 0; transition: 0.2s ease; font-size: 22px; box-shadow: var(--shadow); }
.video-card:hover .play-button, .video-card:focus-within .play-button { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-body { padding: 18px; }
.video-body h2, .video-body h3 { margin: 10px 0 8px; font-size: 19px; line-height: 1.35; }
.video-body p { color: var(--muted); margin: 0 0 12px; }
.tag, .video-meta span { display: inline-flex; border: 1px solid var(--line); background: var(--soft); color: var(--brand-dark); border-radius: 999px; padding: 4px 9px; font-size: 12px; font-weight: 700; }
.video-meta { display: flex; flex-wrap: wrap; gap: 6px; }
.split { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 28px; align-items: center; }
.process-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.process-list.wide { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.process-list li { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 18px; }
.process-list strong { display: block; color: var(--brand-dark); margin-bottom: 6px; }
.process-list span { color: var(--muted); }
.timeline { display: grid; gap: 14px; }
.timeline article { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 18px 20px; }
.timeline.large article { padding: 24px; }
.timeline time { color: var(--brand); font-weight: 800; }
.timeline h2, .timeline h3 { margin: 6px 0; }
.timeline p { color: var(--muted); margin: 0; }
.faq-list { display: grid; gap: 12px; }
.faq-list details { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 16px 18px; }
.faq-list summary { cursor: pointer; font-weight: 800; color: var(--brand-dark); }
.faq-list p { color: var(--muted); margin: 10px 0 0; }
.standalone details { padding: 20px 22px; }
.rating { color: var(--brand-dark); font-weight: 900; margin-bottom: 8px; }
.contact-box { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr); gap: 24px; align-items: start; background: var(--panel); border: 1px solid var(--line); border-radius: 28px; padding: 28px; box-shadow: var(--shadow); }
.contact-form { display: grid; gap: 12px; }
.contact-form label { display: grid; gap: 6px; font-weight: 700; color: var(--brand-dark); }
.contact-form input, .contact-form select, .contact-form textarea { border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; font: inherit; background: var(--soft); }
.contact-form textarea { min-height: 120px; resize: vertical; }
.page-hero { padding: 42px 0 22px; max-width: 920px; }
.site-footer { background: #2d2118; color: #fff; padding: 42px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 0.8fr 0.9fr; gap: 28px; }
.site-footer p, .site-footer a, .site-footer em { color: rgba(255,255,255,0.76); }
.site-footer h2 { font-size: 20px; color: #fff; }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-logo { margin-bottom: 14px; }
.copyright { border-top: 1px solid rgba(255,255,255,0.14); margin-top: 28px; padding-top: 18px; color: rgba(255,255,255,0.66); }
.update-time { font-weight: 800; }
@media (max-width: 980px) {
    .hero, .split, .contact-box, .footer-grid { grid-template-columns: 1fr; }
    .card-grid.three, .card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .video-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .header-inner { align-items: flex-start; flex-direction: column; }
    .main-nav { justify-content: flex-start; }
}
@media (max-width: 640px) {
    .container { width: min(100% - 22px, 1180px); }
    .card-grid.three, .card-grid.two, .video-grid, .process-list.wide { grid-template-columns: 1fr; }
    .search-row { flex-direction: column; }
    .section { padding: 46px 0; }
    .hero { padding-top: 30px; }
    .hero-actions { align-items: stretch; flex-direction: column; }
    .btn, .search-row button { width: 100%; }
}