:root {
  --bg: #f8f6f1;
  --surface: #ffffff;
  --surface-soft: #f1eee7;
  --text: #191713;
  --muted: #6f6a60;
  --line: rgba(25, 23, 19, 0.10);
  --accent: #111111;
  --accent-soft: #ded7c9;
  --gold: #b49763;
  --shadow: 0 28px 80px rgba(25, 23, 19, 0.10);
  --radius-lg: 32px;
  --radius-md: 22px;
  --radius-sm: 14px;
  --container: min(1180px, calc(100vw - 40px));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: radial-gradient(circle at top left, rgba(180, 151, 99, 0.14), transparent 32rem), var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  letter-spacing: 0.01em;
}
a { color: inherit; text-decoration: none; }
img, video { max-width: 100%; display: block; }
button, input, textarea { font: inherit; }
.skip-link {
  position: absolute;
  left: -999px;
  top: 12px;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  z-index: 50;
}
.skip-link:focus { left: 16px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(24px);
  background: rgba(248, 246, 241, 0.82);
  border-bottom: 1px solid var(--line);
}
.navbar {
  width: var(--container);
  margin: 0 auto;
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  white-space: nowrap;
}
.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, #111, #4b4438);
  box-shadow: 0 14px 34px rgba(17, 17, 17, 0.18);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav-links a {
  padding: 10px 13px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}
.nav-links a:hover, .nav-links a[aria-current="page"] {
  color: var(--text);
  background: rgba(17, 17, 17, 0.06);
  transform: translateY(-1px);
}
.search-wrap {
  width: var(--container);
  margin: 0 auto 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
}
.search-wrap input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 14px 18px;
  background: rgba(255,255,255,0.78);
  outline: none;
}
.search-wrap button, .btn {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  padding: 13px 22px;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.search-wrap button:hover, .btn:hover { transform: translateY(-2px); box-shadow: 0 15px 35px rgba(17,17,17,.16); }
.btn.secondary { background: transparent; color: var(--text); border-color: var(--line); }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.container { width: var(--container); margin: 0 auto; }
.hero {
  min-height: calc(100vh - 98px);
  display: grid;
  align-items: center;
  padding: 88px 0 70px;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.78fr);
  gap: 54px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--gold);
  border: 1px solid rgba(180,151,99,.22);
  background: rgba(255,255,255,.58);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}
h1, h2, h3, h4 { line-height: 1.18; margin: 0; letter-spacing: -0.03em; }
h1 { font-size: clamp(42px, 6vw, 84px); margin-top: 24px; }
h2 { font-size: clamp(30px, 4.1vw, 54px); }
h3 { font-size: clamp(20px, 2.1vw, 28px); }
p { margin: 0; color: var(--muted); }
.lead { margin: 24px 0 30px; font-size: clamp(17px, 1.65vw, 22px); max-width: 720px; }
.hero-panel {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,.72);
  background: var(--surface);
}
.hero-panel img { aspect-ratio: 4 / 5; object-fit: cover; width: 100%; }
.hero-meta {
  padding: 24px;
  display: grid;
  gap: 12px;
}
.domain-pill {
  display: inline-flex;
  width: max-content;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--text);
  padding: 8px 12px;
  font-size: 13px;
}
.section { padding: 88px 0; }
.section-head {
  display: grid;
  grid-template-columns: minmax(0, .78fr) minmax(260px, .45fr);
  gap: 34px;
  align-items: end;
  margin-bottom: 34px;
}
.section-head p { font-size: 16px; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
  background: rgba(255,255,255,.74);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: 0 18px 60px rgba(25, 23, 19, .05);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: rgba(180,151,99,.32); }
.card h3 { margin-bottom: 12px; }
.media-card { padding: 0; overflow: hidden; position: relative; }
.video-shell {
  position: relative;
  aspect-ratio: 16 / 10;
  background: #111;
  overflow: hidden;
}
.video-shell img, .video-shell video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease, opacity .25s ease;
}
.video-shell video { position: absolute; inset: 0; opacity: 0; }
.media-card:hover .video-shell img { transform: scale(1.04); }
.media-card:hover .video-shell video { opacity: .92; }
.play-badge {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) scale(.92);
  width: 70px;
  height: 70px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  background: rgba(17,17,17,.72);
  border: 1px solid rgba(255,255,255,.4);
  opacity: 0;
  transition: opacity .2s ease, transform .2s ease;
}
.play-badge::before { content: ''; border-left: 17px solid currentColor; border-top: 11px solid transparent; border-bottom: 11px solid transparent; margin-left: 4px; }
.media-card:hover .play-badge { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.card-body { padding: 22px; }
.badges { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.badge {
  border-radius: 999px;
  padding: 6px 10px;
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 12px;
}
.metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--muted);
  font-size: 13px;
  margin-top: 14px;
}
.stat {
  display: grid;
  gap: 5px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}
.stat strong { font-size: clamp(28px, 4vw, 48px); line-height: 1; }
.testimonial { display: grid; gap: 16px; }
.avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
}
.faq-item {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.70);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  padding: 20px 24px;
  font-weight: 800;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p { padding: 0 24px 22px; }
.contact-box {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(320px, .7fr);
  gap: 24px;
  align-items: stretch;
}
.form {
  display: grid;
  gap: 14px;
}
.form input, .form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255,255,255,.82);
  padding: 14px 16px;
  outline: none;
}
.form textarea { min-height: 128px; resize: vertical; }
.site-footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 28px;
  background: rgba(255,255,255,.46);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(260px, .9fr) minmax(320px, 1fr);
  gap: 28px;
  align-items: start;
}
.footer-links { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.footer-links a { color: var(--muted); padding: 8px 10px; border-radius: 999px; background: rgba(17,17,17,.04); }
.copyright { color: var(--muted); font-size: 13px; margin-top: 20px; }
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%) translateY(20px);
  background: #111;
  color: #fff;
  border-radius: 999px;
  padding: 12px 18px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 60;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.breadcrumb { color: var(--muted); font-size: 14px; margin-bottom: 20px; }
.article { max-width: 860px; }
.article p { margin-top: 16px; }
.feature-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); margin-top: 26px; }
.feature-img img { width: 100%; aspect-ratio: 16/8; object-fit: cover; }
@media (max-width: 920px) {
  .navbar { min-height: auto; padding: 18px 0; align-items: flex-start; flex-direction: column; }
  .nav-links { justify-content: flex-start; }
  .hero-grid, .section-head, .contact-box, .footer-grid { grid-template-columns: 1fr; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { min-height: auto; padding-top: 54px; }
}
@media (max-width: 640px) {
  :root { --container: min(100vw - 24px, 1180px); }
  .search-wrap { grid-template-columns: 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 62px 0; }
  .card { padding: 22px; }
  .card-body { padding: 20px; }
  .nav-links a { padding: 8px 10px; }
  h1 { font-size: clamp(38px, 12vw, 58px); }
}