:root {
  --bg: #fbfaf7;
  --paper: #ffffff;
  --ink: #121826;
  --muted: #667085;
  --line: #ece7df;
  --brand: #111827;
  --accent: #f5b84b;
  --accent-soft: #fff4dc;
  --green: #e8f5ec;
  --blue: #eaf3ff;
  --shadow: 0 20px 60px rgba(17, 24, 39, .08);
  --radius: 28px;
}
* { 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", Arial, sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top left, #fff7df 0, transparent 38rem), linear-gradient(180deg, #fbfaf7 0%, #f6f8fb 100%);
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1160px, calc(100% - 32px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(251,250,247,.88); backdrop-filter: blur(18px); border-bottom: 1px solid rgba(236,231,223,.8); }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 78px; gap: 20px; }
.logo-wrap { display: inline-flex; align-items: center; gap: 12px; font-weight: 900; letter-spacing: -.02em; }
.logo-wrap img { width: 118px; height: auto; border-radius: 16px; box-shadow: 0 8px 24px rgba(17,24,39,.16); }
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-text strong { font-size: 18px; }
.logo-text span { color: var(--muted); font-size: 12px; }
.nav-list { display: flex; align-items: center; gap: 6px; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
.nav-list a { display: inline-flex; padding: 9px 12px; border-radius: 999px; color: #344054; font-size: 14px; }
.nav-list a:hover, .nav-list a[aria-current="page"] { background: #111827; color: #fff; }
.search-band { border-bottom: 1px solid rgba(236,231,223,.7); background: rgba(255,255,255,.64); }
.search-inner { display: grid; grid-template-columns: 1fr auto; gap: 10px; padding: 14px 0; }
.search-inner label { grid-column: 1/-1; color: var(--muted); font-size: 13px; }
.search-inner input { width: 100%; border: 1px solid var(--line); border-radius: 18px; padding: 13px 16px; font-size: 15px; background: #fff; outline: none; }
.search-inner button, .btn { border: 0; border-radius: 18px; padding: 13px 18px; font-size: 15px; font-weight: 800; color: #111827; background: var(--accent); cursor: pointer; box-shadow: 0 10px 20px rgba(245,184,75,.22); }
.search-tip { grid-column: 1/-1; min-height: 24px; margin: 0; color: #8a5a00; font-size: 13px; }
.hero { padding: 74px 0 52px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 36px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 16px; padding: 8px 12px; border: 1px solid #f2dca7; background: var(--accent-soft); color: #8a5a00; border-radius: 999px; font-size: 13px; font-weight: 800; }
h1, h2, h3, h4 { letter-spacing: -.04em; line-height: 1.15; }
h1 { margin: 0; font-size: clamp(38px, 7vw, 72px); }
h2 { margin: 0 0 14px; font-size: clamp(28px, 4vw, 46px); }
h3 { margin: 0 0 10px; font-size: 22px; }
p { margin: 0 0 14px; }
.lead { margin-top: 20px; color: #475467; font-size: 18px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 22px; }
.btn.secondary { background: #111827; color: #fff; box-shadow: none; }
.domain-pill { display: inline-flex; align-items: center; gap: 8px; color: #475467; font-size: 14px; padding: 10px 14px; background: #fff; border: 1px solid var(--line); border-radius: 999px; }
.hero-card { position: relative; padding: 14px; border-radius: 36px; background: rgba(255,255,255,.78); border: 1px solid rgba(255,255,255,.9); box-shadow: var(--shadow); }
.hero-card img { border-radius: 28px; aspect-ratio: 16/10; object-fit: cover; }
.hero-card figcaption { color: var(--muted); font-size: 13px; margin-top: 10px; }
.play-badge { position: absolute; left: 34px; top: 34px; display: inline-flex; align-items: center; gap: 8px; padding: 10px 14px; border-radius: 999px; background: rgba(17,24,39,.86); color: #fff; font-weight: 800; }
.play-badge::before { content: ''; width: 0; height: 0; border-left: 10px solid #fff; border-top: 7px solid transparent; border-bottom: 7px solid transparent; }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 22px; }
.stat { padding: 16px; border: 1px solid var(--line); background: rgba(255,255,255,.74); border-radius: 22px; }
.stat strong { display: block; font-size: 24px; }
.section { padding: 52px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.section-head p { color: var(--muted); max-width: 660px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.card { background: rgba(255,255,255,.88); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: 0 14px 42px rgba(17,24,39,.05); }
.card p, .card li { color: #475467; }
.badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.badge { display: inline-flex; padding: 6px 10px; border-radius: 999px; background: #f2f4f7; color: #344054; font-size: 12px; font-weight: 700; }
.video-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.video-card { position: relative; min-height: 330px; overflow: hidden; border-radius: 28px; background: #fff; border: 1px solid var(--line); box-shadow: 0 16px 50px rgba(17,24,39,.07); }
.video-card video, .video-card img { width: 100%; height: 190px; object-fit: cover; background: #f6f8fb; }
.video-card-body { padding: 16px; }
.video-card .play-overlay { position: absolute; inset: 0 0 auto 0; height: 190px; display: grid; place-items: center; background: rgba(17,24,39,.18); opacity: 0; transition: .22s ease; }
.video-card:hover .play-overlay, .video-card:focus-within .play-overlay { opacity: 1; }
.play-circle { width: 62px; height: 62px; border-radius: 50%; display: grid; place-items: center; background: rgba(255,255,255,.92); box-shadow: 0 12px 32px rgba(17,24,39,.2); }
.play-circle::before { content: ''; margin-left: 4px; width: 0; height: 0; border-left: 16px solid #111827; border-top: 11px solid transparent; border-bottom: 11px solid transparent; }
.meta-row { display: flex; flex-wrap: wrap; gap: 9px; color: var(--muted); font-size: 12px; margin-top: 12px; }
.timeline { display: grid; gap: 14px; }
.timeline article { display: grid; grid-template-columns: 130px 1fr; gap: 18px; align-items: start; padding: 20px; border-radius: 24px; background: #fff; border: 1px solid var(--line); }
.timeline time { color: #8a5a00; font-weight: 900; }
.review { display: flex; flex-direction: column; gap: 12px; }
.review blockquote { margin: 0; color: #344054; }
.review footer { color: var(--muted); font-size: 14px; }
.faq-list { display: grid; gap: 12px; }
details { background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 18px 20px; }
summary { cursor: pointer; font-weight: 900; }
details p { margin-top: 12px; color: #475467; }
.cta { padding: 34px; border-radius: 34px; background: linear-gradient(135deg, #111827, #273142); color: #fff; display: grid; grid-template-columns: 1fr auto; gap: 22px; align-items: center; }
.cta p { color: #e5e7eb; }
.site-footer { margin-top: 40px; padding: 42px 0; background: #111827; color: #f9fafb; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 24px; }
.footer-logo { display: inline-flex; align-items: center; gap: 12px; font-weight: 900; margin-bottom: 14px; }
.footer-logo img { width: 112px; border-radius: 16px; }
.site-footer a, .site-footer p, .site-footer li { color: #d1d5db; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.breadcrumb { margin: 24px 0 0; font-size: 14px; color: var(--muted); }
.page-hero { padding: 52px 0 24px; }
.kicker-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.table { width: 100%; border-collapse: collapse; overflow: hidden; border-radius: 20px; background: #fff; }
.table th, .table td { border-bottom: 1px solid var(--line); text-align: left; padding: 14px; vertical-align: top; }
.table th { background: #f9fafb; }
.form { display: grid; gap: 12px; }
.form input, .form textarea { width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: 16px; font: inherit; }
.form textarea { min-height: 120px; resize: vertical; }
.notice { padding: 14px 16px; border-radius: 18px; background: var(--blue); color: #344054; }
@media (max-width: 960px) {
  .hero-grid, .grid-3, .grid-2, .footer-grid, .kicker-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-head { align-items: flex-start; flex-direction: column; }
  .cta { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .header-inner { align-items: flex-start; flex-direction: column; padding: 14px 0; }
  .search-inner { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .timeline article { grid-template-columns: 1fr; }
  .hero { padding-top: 42px; }
}