:root {
  --brand: #f04465;
  --brand-deep: #ba2040;
  --ink: #20242c;
  --muted: #69707d;
  --soft: #fff2f5;
  --line: #eceff4;
  --card: #ffffff;
  --bg: #fffafc;
  --shadow: 0 18px 45px rgba(40, 44, 55, 0.10);
  --radius: 26px;
}
* { 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: linear-gradient(180deg, #fff 0%, var(--bg) 72%, #fff 100%);
  line-height: 1.72;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.topbar, .main-nav, .search-zone, main, .footer-grid, .copyright {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0 12px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.logo-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 16px;
  color: white;
  background: radial-gradient(circle at 30% 25%, #ff8aa1, var(--brand));
  box-shadow: 0 12px 28px rgba(240, 68, 101, 0.28);
}
.logo-text { font-size: 22px; }
.domain-line { margin: 0; color: var(--muted); font-size: 14px; }
.main-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 0 12px;
}
.main-nav a {
  flex: 0 0 auto;
  padding: 9px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  border: 1px solid transparent;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--brand-deep);
  background: var(--soft);
  border-color: #ffd6de;
}
.search-zone {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 0 0 16px;
}
.fake-search {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
}
.fake-search label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}
.fake-search input {
  min-width: 220px;
  flex: 1;
  border: 0;
  outline: none;
  padding: 9px 12px;
  font: inherit;
}
.fake-search button, .btn, .share-button {
  border: 0;
  border-radius: 999px;
  background: var(--brand);
  color: #fff;
  padding: 11px 18px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(240, 68, 101, 0.24);
}
.btn.secondary, .share-button.secondary {
  background: #fff;
  color: var(--brand-deep);
  border: 1px solid #ffd3dc;
  box-shadow: none;
}
.search-note { color: var(--muted); font-size: 13px; margin: 0; }
main { padding: 32px 0 70px; }
.breadcrumb {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 22px;
}
.breadcrumb a { color: var(--brand-deep); }
.hero {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 36px;
  align-items: center;
  padding: 34px;
  border-radius: 36px;
  background: linear-gradient(135deg, #fff 0%, #fff2f5 100%);
  box-shadow: var(--shadow);
}
.eyebrow {
  color: var(--brand-deep);
  font-weight: 800;
  letter-spacing: 0.06em;
  margin: 0 0 10px;
}
h1, h2, h3, h4, h5, h6 {
  line-height: 1.22;
  margin: 0 0 14px;
  color: var(--ink);
}
h1 { font-size: clamp(34px, 5vw, 58px); }
h2 { font-size: clamp(26px, 3.2vw, 40px); }
h3 { font-size: 22px; }
p { margin: 0 0 14px; }
.lead { font-size: 18px; color: var(--muted); }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.hero-img, .section-img { border-radius: 28px; overflow: hidden; box-shadow: var(--shadow); }
.image-caption, figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}
.section {
  margin-top: 60px;
}
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}
.section-head p { color: var(--muted); max-width: 680px; }
.grid {
  display: grid;
  gap: 20px;
}
.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, .review, .faq-item, .guide-step, .timeline-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 12px 30px rgba(30, 34, 45, 0.06);
}
.card img { border-radius: 20px; margin-bottom: 16px; }
.meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 13px;
}
.tag, .metric {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 999px;
  background: #f6f7fb;
  color: #525866;
  font-size: 13px;
}
.tag.brand-tag { background: var(--soft); color: var(--brand-deep); }
.video-card {
  position: relative;
  min-height: 320px;
  overflow: hidden;
  border-radius: var(--radius);
  background: #111827;
  color: #fff;
  box-shadow: var(--shadow);
}
.video-card img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  opacity: 0.88;
  transform: scale(1.01);
  transition: transform .28s ease, opacity .28s ease;
}
.video-card:hover img, .video-card.is-hover img {
  transform: scale(1.06);
  opacity: 0.72;
}
.play-button {
  position: absolute;
  left: 50%;
  top: 45%;
  transform: translate(-50%, -50%) scale(.92);
  width: 74px;
  height: 74px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,0.92);
  color: var(--brand);
  font-size: 30px;
  opacity: 0;
  transition: opacity .28s ease, transform .28s ease;
}
.video-card:hover .play-button, .video-card.is-hover .play-button {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}
.video-copy {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 24px;
  background: linear-gradient(180deg, transparent, rgba(0,0,0,.72));
}
.video-copy h3, .video-copy p { color: #fff; }
.video-copy p { opacity: .88; }
.split {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 32px;
  align-items: center;
}
.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 16px;
  margin-top: 22px;
}
.kpi {
  padding: 20px;
  border-radius: 22px;
  background: #fff;
  border: 1px solid var(--line);
}
.kpi strong { display: block; font-size: 28px; color: var(--brand-deep); }
.review .stars { color: #ff9e1b; letter-spacing: 2px; }
.faq-item details summary {
  cursor: pointer;
  font-weight: 800;
  color: var(--ink);
}
.faq-item details p { margin-top: 12px; color: var(--muted); }
.timeline {
  display: grid;
  gap: 16px;
}
.timeline-item { display: grid; grid-template-columns: 120px 1fr; gap: 18px; }
.timeline-date { color: var(--brand-deep); font-weight: 800; }
.notice {
  padding: 18px 20px;
  border: 1px dashed #ffbac7;
  border-radius: 22px;
  background: #fff8fa;
  color: #7a3343;
}
.site-footer {
  background: #1d222b;
  color: #f8fafc;
  padding: 46px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 28px;
}
.site-footer p, .site-footer a { color: #cbd5e1; }
.site-footer h2 { color: #fff; font-size: 18px; }
.footer-logo { margin-bottom: 14px; }
.copyright {
  border-top: 1px solid rgba(255,255,255,.12);
  margin-top: 26px;
  padding-top: 18px;
  color: #aeb8c7;
  font-size: 14px;
}
@media (max-width: 920px) {
  .hero, .split, .grid-2, .grid-3, .grid-4, .footer-grid { grid-template-columns: 1fr; }
  .search-zone { grid-template-columns: 1fr; }
  .kpi-row { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .timeline-item { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .hero { padding: 24px; }
  .fake-search { border-radius: 22px; align-items: stretch; flex-direction: column; }
  .fake-search input { width: 100%; min-width: 0; }
  .section-head { display: block; }
  .kpi-row { grid-template-columns: 1fr; }
}