:root {
  --bg: #0f141b;
  --bg-soft: #151d27;
  --paper: #f5f1e7;
  --paper-2: #efe6d7;
  --text: #eef1f5;
  --text-dark: #11161f;
  --muted: #94a0b2;
  --line: rgba(255,255,255,0.08);
  --line-dark: rgba(17,22,31,0.12);
  --accent: #d07a3c;
  --accent-2: #f0b37d;
  --shadow: 0 20px 50px rgba(0,0,0,0.28);
  --radius: 22px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background:
    radial-gradient(circle at 15% 20%, rgba(208,122,60,0.20), transparent 30%),
    radial-gradient(circle at 85% 0%, rgba(240,179,125,0.12), transparent 28%),
    linear-gradient(180deg, #0a1016 0%, #101823 42%, #0b1118 100%);
  color: var(--text);
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font: inherit; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}
.container-shell {
  width: min(1220px, calc(100% - 32px));
  margin: 0 auto;
}
.topline {
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: rgba(255,255,255,0.02);
}
.topline-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  font-size: 13px;
  color: #d6dde8;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(8,13,20,0.86);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0;
}
.brand-lockup {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}
.brand-lockup strong {
  display: block;
  font-size: 28px;
  letter-spacing: 0.03em;
}
.brand-lockup span {
  display: block;
  color: var(--muted);
  font-size: 14px;
}
.main-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.main-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.03);
  transition: transform .28s ease, background .28s ease, border-color .28s ease;
}
.main-nav a:hover {
  transform: translateY(-2px);
  background: rgba(208,122,60,0.18);
  border-color: rgba(240,179,125,0.38);
}
.search-bar-wrap {
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  background: rgba(255,255,255,0.015);
}
.search-bar {
  display: grid;
  gap: 8px;
  padding: 14px 0 16px;
}
.fake-search {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}
.fake-search input {
  width: 100%;
  height: 50px;
  border: 1px solid rgba(255,255,255,0.09);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  border-radius: 16px;
  padding: 0 16px;
}
.fake-search button,
.btn,
.share-btn,
.mcp-tab,
.play-btn {
  border: 0;
  cursor: pointer;
}
.fake-search button,
.btn,
.share-btn,
.mcp-tab {
  min-height: 50px;
  border-radius: 16px;
  padding: 0 18px;
  transition: transform .28s ease, opacity .28s ease, background .28s ease;
}
.fake-search button,
.btn-primary,
.share-btn {
  background: linear-gradient(135deg, #d07a3c 0%, #f0b37d 100%);
  color: #141820;
  font-weight: 700;
}
.fake-search button:hover,
.btn:hover,
.share-btn:hover,
.mcp-tab:hover {
  transform: translateY(-2px);
}
.btn-secondary,
.mcp-tab {
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border: 1px solid rgba(255,255,255,0.08);
}
.search-tip,
.hero-note,
.image-caption,
.story-caption,
.footer-copy {
  color: var(--muted);
  font-size: 14px;
}
.breadcrumb { padding: 18px 0 0; }
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 14px;
  color: #cfd6e0;
}
.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(255,255,255,0.45);
}
.panel {
  width: min(1220px, calc(100% - 32px));
  margin: 26px auto 0;
  padding: 34px;
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.panel-hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: stretch;
}
.hero-media,
.page-hero-media,
.story-media,
.contact-store,
.archive-image {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  min-height: 100%;
}
.hero-media img,
.page-hero-media img,
.story-media img,
.contact-store img,
.archive-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-media-copy {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(8,13,20,0.72);
  backdrop-filter: blur(10px);
}
.hero-kicker,
.kicker,
.eyebrow,
.video-category,
.expert-role,
.update-time {
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
}
.hero-copy h1,
.section-heading h2,
.section-heading h3 {
  margin: 0;
  line-height: 1.18;
  letter-spacing: 0.01em;
}
.hero-copy h1 { font-size: clamp(34px, 4.6vw, 62px); margin-top: 10px; }
.hero-lead,
.section-lead {
  color: #dbe3ee;
  font-size: 17px;
  margin: 14px 0 0;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 18px;
}
.metric-strip {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.metric-card,
.update-card,
.video-card,
.product-card,
.article-card,
.channel-card,
.ai-card,
.trust-card,
.step-card,
.expert-card,
.testimonial-card,
.mini-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 22px;
  padding: 22px;
}
.metric-card span,
.metric-card strong { display: block; }
.metric-card span { color: var(--muted); font-size: 14px; }
.metric-card strong { font-size: 32px; margin-top: 10px; }
.section-heading { margin-bottom: 24px; }
.section-heading h2,
.section-heading h3 { font-size: clamp(28px, 3vw, 42px); }
.update-grid,
.product-grid,
.article-grid,
.channel-grid,
.ai-grid,
.trust-grid,
.step-grid,
.expert-grid,
.testimonial-grid,
.mini-grid {
  display: grid;
  gap: 18px;
}
.update-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.product-grid,
.trust-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.article-grid,
.channel-grid,
.ai-grid,
.testimonial-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.step-grid,
.expert-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.mini-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.video-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.video-grid.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.video-card { padding: 0; overflow: hidden; }
.video-poster {
  position: relative;
  min-height: 260px;
  background-size: cover;
  background-position: center;
}
.video-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(4,7,11,0.12) 0%, rgba(7,11,17,0.78) 100%);
}
.play-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) scale(.92);
  width: 88px;
  height: 88px;
  border-radius: 999px;
  background: rgba(240,179,125,0.92);
  color: #10161f;
  font-weight: 700;
  opacity: 0;
  box-shadow: 0 14px 32px rgba(0,0,0,0.36);
  transition: all .25s ease;
}
.video-duration,
.video-badge {
  position: absolute;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 12px;
  background: rgba(8,13,20,0.68);
  border: 1px solid rgba(255,255,255,0.08);
}
.video-duration { right: 16px; bottom: 16px; }
.video-badge { left: 16px; top: 16px; color: #fff2e3; }
.video-card:hover .play-btn { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-copy { padding: 22px; }
.video-copy h3,
.product-card h3,
.article-card h3,
.channel-card h3,
.ai-card h3,
.update-card h3,
.step-card h3,
.expert-card h3,
.testimonial-card h3,
.mini-card h4,
.trust-card h4 {
  margin: 6px 0 10px;
  line-height: 1.28;
}
.tag-row,
.topic-cloud,
.queue-list,
.share-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-row span,
.topic-cloud span,
.queue-list span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  font-size: 13px;
}
.video-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 16px 0 0;
}
.video-stats div,
.product-meta,
.expert-meta,
.archive-list,
.contact-list,
.footer-list {
  font-size: 14px;
}
.video-stats div {
  padding: 12px;
  border-radius: 18px;
  background: rgba(255,255,255,0.04);
}
.archive-box,
.panel-split,
.panel-visual-story,
.panel-contact,
.mcp-shell,
.page-hero {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}
.archive-list,
.contact-list,
.footer-list,
.community-rules ul,
.expert-meta {
  margin: 0;
  padding-left: 18px;
  color: #d7dfea;
}
.community-box,
.share-box,
.mcp-panels,
.contact-side,
.qr-stack,
.contact-qr-grid {
  display: grid;
  gap: 18px;
}
.subsection-title {
  margin: 28px 0 16px;
  font-size: 24px;
}
.logo-wall {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}
.logo-chip {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  text-align: center;
  padding: 10px;
}
.faq-grid { display: grid; gap: 14px; }
.faq-item {
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
  padding: 0 18px;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  font-weight: 700;
}
.faq-item p {
  margin: 0 0 18px;
  color: #d7dfea;
}
.json-box {
  margin: 0;
  padding: 20px;
  overflow: auto;
  border-radius: 20px;
  background: #091019;
  color: #f2efe7;
  font-family: Consolas, Monaco, monospace;
  font-size: 13px;
  line-height: 1.65;
  border: 1px solid rgba(255,255,255,0.08);
}
.share-row { margin-top: 18px; }
.mcp-tabs {
  display: grid;
  gap: 12px;
  align-content: start;
}
.mcp-tab.active,
.mcp-panel.active { background: rgba(255,255,255,0.08); }
.mcp-panel { display: none; }
.mcp-panel.active {
  display: block;
  padding: 22px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,0.08);
}
.panel-contact-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.contact-qr-inline,
.qr-stack {
  display: flex;
  gap: 16px;
}
.contact-qr-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.contact-qr-grid figure,
.qr-stack figure,
.contact-qr-inline img,
.footer-brand,
.footer-mcp-box {
  margin: 0;
}
.contact-qr-grid figure,
.qr-stack figure,
.footer-mcp-box {
  padding: 14px;
  border-radius: 18px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  text-align: center;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 24px;
  align-items: start;
}
.site-footer {
  margin-top: 34px;
  padding: 24px 0 40px;
  background: rgba(7,10,15,0.86);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-mcp-box {
  padding: 14px;
  border-radius: 18px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
}
.footer-mcp-box p {
  margin: 8px 0 12px;
  color: #d8dfea;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.text-link {
  color: #ffd1ab;
  font-weight: 700;
}
.seo-noise {
  width: 0;
  height: 0;
  overflow: hidden;
  opacity: 0.01;
  pointer-events: none;
  user-select: none;
}
.seo-noise * {
  font-size: 0;
  line-height: 0;
}
@media (max-width: 1100px) {
  .panel-hero,
  .archive-box,
  .panel-split,
  .panel-visual-story,
  .panel-contact,
  .mcp-shell,
  .page-hero,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .video-grid,
  .product-grid,
  .article-grid,
  .channel-grid,
  .ai-grid,
  .trust-grid,
  .step-grid,
  .expert-grid,
  .testimonial-grid,
  .update-grid,
  .metric-strip,
  .mini-grid,
  .logo-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 760px) {
  .container-shell,
  .panel { width: min(100% - 18px, 100% - 18px); }
  .panel { padding: 22px; border-radius: 22px; }
  .header-main,
  .topline-wrap,
  .panel-contact-strip {
    flex-direction: column;
    align-items: flex-start;
  }
  .main-nav ul,
  .contact-qr-inline,
  .qr-stack {
    width: 100%;
  }
  .fake-search { grid-template-columns: 1fr; }
  .hero-copy h1 { font-size: 34px; }
  .video-grid,
  .video-grid.compact,
  .product-grid,
  .article-grid,
  .channel-grid,
  .ai-grid,
  .trust-grid,
  .step-grid,
  .expert-grid,
  .testimonial-grid,
  .update-grid,
  .metric-strip,
  .mini-grid,
  .logo-wall,
  .contact-qr-grid {
    grid-template-columns: 1fr;
  }
  .video-poster { min-height: 220px; }
  .play-btn { width: 74px; height: 74px; }
  .brand-lockup strong { font-size: 24px; }
}