:root {
  --bg: #f7f4ee;
  --panel: #fffaf2;
  --text: #111827;
  --muted: #667085;
  --line: rgba(17, 24, 39, 0.12);
  --dark: #101828;
  --dark-soft: #1d2939;
  --accent: #b08a57;
  --accent-dark: #7a5a30;
  --radius: 28px;
  --shadow: 0 24px 80px rgba(16, 24, 40, 0.12);
}
* { 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(--text);
  background: var(--bg);
  line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; height: auto; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(24px);
  background: rgba(247, 244, 238, 0.86);
  border-bottom: 1px solid var(--line);
}
.nav-shell, .search-line {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}
.nav-shell {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.04em;
}
.brand-link img { border-radius: 12px; }
.main-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--muted);
  font-size: 15px;
}
.main-nav a { transition: color .2s ease; }
.main-nav a:hover { color: var(--text); }
.search-line {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 0 0 18px;
}
.search-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  padding: 8px;
  background: rgba(255, 255, 255, .72);
  border: 1px solid var(--line);
  border-radius: 999px;
}
.search-form input {
  border: 0;
  outline: 0;
  background: transparent;
  padding: 10px 16px;
  min-width: 0;
  font-size: 15px;
}
.search-form button, .btn {
  border: 0;
  border-radius: 999px;
  padding: 12px 20px;
  font-weight: 700;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.search-form button, .btn.primary {
  background: var(--dark);
  color: white;
  box-shadow: 0 12px 30px rgba(16, 24, 40, .18);
}
.btn.ghost {
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255,255,255,.5);
}
.search-form button:hover, .btn:hover { transform: translateY(-2px); }
.search-hint { margin: 0; font-size: 14px; color: var(--muted); }
.hero-section, .section, .stats-section, .page-hero {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}
.hero-section {
  min-height: 76vh;
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  align-items: center;
  gap: 64px;
  padding: 72px 0;
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
}
h1, h2, h3 { line-height: 1.18; margin: 0; letter-spacing: -0.03em; }
h1 { font-size: clamp(42px, 7vw, 82px); }
h2 { font-size: clamp(28px, 4vw, 48px); }
h3 { font-size: 21px; }
p { color: var(--muted); }
.hero-text { font-size: 18px; max-width: 680px; margin: 24px 0 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero-media {
  position: relative;
  margin: 0;
  border-radius: 36px;
  overflow: hidden;
  background: var(--panel);
  box-shadow: var(--shadow);
}
.hero-media img { aspect-ratio: 1.12 / 1; object-fit: cover; }
.hero-media figcaption {
  position: absolute;
  left: 22px;
  bottom: 22px;
  right: 22px;
  padding: 14px 18px;
  color: white;
  border-radius: 18px;
  background: rgba(16, 24, 40, .56);
  backdrop-filter: blur(14px);
}
.section { padding: 92px 0; }
.split {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 80px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.split > p { font-size: 19px; margin: 0; }
.section-head { max-width: 760px; margin-bottom: 34px; }
.section-head p:last-child { margin-top: 14px; }
.card-grid { display: grid; gap: 18px; }
.card-grid.four { grid-template-columns: repeat(4, 1fr); }
.info-card, .case-card, .review-card, .side-panel, .rich-article, .contact-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 250, 242, .76);
  box-shadow: 0 18px 50px rgba(16, 24, 40, .06);
}
.info-card { padding: 28px; }
.info-card p, .case-card p { margin-bottom: 0; }
.dark-section {
  width: 100%;
  max-width: none;
  padding-left: max(16px, calc((100% - 1180px) / 2));
  padding-right: max(16px, calc((100% - 1180px) / 2));
  background: var(--dark);
  color: white;
}
.dark-section .eyebrow { color: #dfc293; }
.dark-section p { color: rgba(255,255,255,.68); }
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.video-card {
  overflow: hidden;
  border-radius: 30px;
  background: var(--dark-soft);
  border: 1px solid rgba(255,255,255,.1);
  transition: transform .25s ease, border-color .25s ease;
}
.video-card:hover { transform: translateY(-6px); border-color: rgba(255,255,255,.28); }
.video-frame {
  position: relative;
  overflow: hidden;
  background: #0b1220;
}
.video-frame video {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  opacity: .92;
}
.play-badge {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) scale(.88);
  opacity: 0;
  width: 74px;
  height: 74px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--dark);
  background: rgba(255,255,255,.92);
  font-weight: 800;
  transition: opacity .25s ease, transform .25s ease;
}
.video-card:hover .play-badge { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.duration {
  position: absolute;
  right: 14px;
  bottom: 14px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: white;
  background: rgba(16,24,40,.66);
}
.video-body { padding: 24px; }
.video-body h3, .video-body h2 { font-size: 20px; color: white; }
.tagline { margin: 0 0 10px; color: #dfc293 !important; font-size: 13px; font-weight: 700; }
.metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.metrics span {
  padding: 6px 10px;
  border-radius: 999px;
  color: rgba(255,255,255,.82);
  background: rgba(255,255,255,.08);
  font-size: 12px;
}
.case-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.case-card { padding: 26px; min-height: 210px; }
.stats-section {
  display: grid;
  grid-template-columns: .72fr 1.28fr;
  gap: 60px;
  align-items: center;
  padding: 84px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stats-grid div {
  padding: 26px 18px;
  border-radius: 24px;
  background: rgba(255,255,255,.64);
  border: 1px solid var(--line);
}
.stats-grid strong { display: block; font-size: 36px; line-height: 1; }
.stats-grid span { color: var(--muted); font-size: 14px; }
.review-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.review-card { margin: 0; padding: 24px; }
.review-card blockquote { margin: 0 0 18px; color: var(--text); }
.review-card figcaption { display: grid; gap: 4px; color: var(--muted); font-size: 14px; }
.review-card strong { color: var(--text); }
.faq-list { display: grid; gap: 12px; }
details {
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 18px 22px;
  background: rgba(255,255,255,.54);
}
summary { cursor: pointer; font-weight: 800; }
details p { margin-bottom: 0; }
.contact-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 50px; align-items: start; }
.contact-form { display: grid; gap: 16px; padding: 26px; }
.contact-form label { display: grid; gap: 8px; font-weight: 700; color: var(--text); }
.contact-form input, .contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 13px 14px;
  background: rgba(255,255,255,.72);
  font: inherit;
}
.page-hero { padding: 88px 0 54px; max-width: 900px; }
.page-hero p { font-size: 18px; }
.domain-note { padding: 12px 16px; border-radius: 999px; background: rgba(255,255,255,.64); display: inline-block; }
.article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 30px; align-items: start; }
.rich-article { padding: 34px; }
.rich-article h2 { font-size: 28px; margin-top: 30px; }
.rich-article h2:first-child { margin-top: 0; }
.side-panel { padding: 24px; position: sticky; top: 132px; }
.side-panel h2 { font-size: 20px; margin-top: 22px; }
.side-panel h2:first-child { margin-top: 0; }
.side-panel a { display: block; padding: 10px 0; color: var(--accent-dark); font-weight: 700; }
.site-footer {
  background: var(--dark);
  color: white;
  padding: 64px 0 30px;
}
.site-footer p, .site-footer a { color: rgba(255,255,255,.68); }
.footer-grid {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr .8fr .8fr;
  gap: 40px;
}
.footer-grid h2 { font-size: 18px; margin-bottom: 12px; }
.footer-grid a { display: block; margin: 8px 0; }
.footer-brand { color: white; }
.copyright {
  width: min(1180px, calc(100% - 32px));
  margin: 36px auto 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.12);
  font-size: 14px;
}
@media (max-width: 980px) {
  .nav-shell, .search-line, .hero-section, .split, .stats-section, .contact-section, .article-layout { grid-template-columns: 1fr; }
  .nav-shell { align-items: flex-start; padding-top: 18px; }
  .main-nav { flex-wrap: wrap; justify-content: flex-start; }
  .search-line { gap: 8px; }
  .hero-section { gap: 34px; padding: 50px 0; }
  .card-grid.four, .video-grid, .case-strip, .stats-grid, .review-grid, .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .side-panel { position: static; }
}
@media (max-width: 640px) {
  .search-form { grid-template-columns: 1fr; border-radius: 24px; }
  .card-grid.four, .video-grid, .case-strip, .stats-grid, .review-grid, .footer-grid { grid-template-columns: 1fr; }
  .hero-media figcaption { position: static; border-radius: 0; }
  .section { padding: 62px 0; }
  .dark-section { padding-left: 16px; padding-right: 16px; }
}