/* 开云体育设计备忘：新未来工业影像主义，深色低键背景、赤橙高光、非对称布局、视频封面感、避免通用紫色渐变与过度圆角。 */
:root {
  --bg: #071019;
  --bg-soft: #0d1823;
  --panel: rgba(12, 21, 30, 0.78);
  --panel-strong: #101a25;
  --line: rgba(255, 255, 255, 0.12);
  --text: #e7edf3;
  --muted: #9fb0c0;
  --accent: #ff6a3c;
  --accent-soft: #ff8a58;
  --cyan: #75d4ff;
  --gold: #f3b77b;
  --poster-a: linear-gradient(135deg, #14283e 0%, #102334 55%, #1f3a58 100%);
  --poster-b: linear-gradient(135deg, #2d1b12 0%, #141012 55%, #5b3117 100%);
  --poster-c: linear-gradient(135deg, #111e1c 0%, #0f1317 60%, #27413b 100%);
  --shadow: 0 22px 80px rgba(0,0,0,.35);
  --radius: 22px;
  --radius-sm: 14px;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Noto Sans SC', system-ui, sans-serif;
  background: radial-gradient(circle at top right, rgba(117,212,255,.08), transparent 26%), linear-gradient(180deg, #071019 0%, #08131e 36%, #071019 100%);
  color: var(--text);
  line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.eyebrow {
  margin: 0 0 12px;
  color: var(--gold);
  letter-spacing: .18em;
  text-transform: uppercase;
  font-size: .78rem;
  font-weight: 700;
}
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 14px;
  font-family: 'Oswald', 'Noto Sans SC', sans-serif;
  line-height: 1.05;
  letter-spacing: .02em;
}
h1 { font-size: clamp(2.8rem, 6vw, 5.8rem); }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
h3 { font-size: 1.35rem; }
p { margin: 0 0 16px; color: var(--text); }
ul { margin: 0; padding: 0; list-style: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(20px);
  background: rgba(6, 11, 18, .82);
  border-bottom: 1px solid var(--line);
}
.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 84px;
}
.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}
.brand-lockup span { display: grid; gap: 4px; }
.brand-lockup strong { font-size: 1.06rem; letter-spacing: .06em; }
.brand-lockup em { font-style: normal; font-size: .85rem; color: var(--muted); }
.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}
.nav-link {
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--muted);
  transition: .28s ease;
  font-size: .95rem;
}
.nav-link:hover, .nav-link.active {
  color: #fff;
  border-color: rgba(255,106,60,.35);
  background: rgba(255,106,60,.08);
}
.search-shell {
  padding: 0 0 18px;
}
.search-form {
  display: grid;
  gap: 8px;
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.02));
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 18px 16px;
}
.search-form label { font-weight: 700; }
.search-form p { margin: 0; color: var(--muted); font-size: .92rem; }
.search-row { display: grid; grid-template-columns: 1fr auto; gap: 12px; }
.search-row input {
  min-height: 50px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.05);
  color: #fff;
  padding: 0 16px;
}
.search-row button, .primary-button, .ghost-button, .share-button {
  min-height: 50px;
  border-radius: 999px;
  border: none;
  padding: 0 22px;
  font-weight: 700;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
}
.search-row button, .primary-button {
  background: linear-gradient(135deg, var(--accent) 0%, #ff8d4d 100%);
  color: #fff;
  box-shadow: 0 18px 34px rgba(255,106,60,.22);
}
.ghost-button {
  background: rgba(117,212,255,.08);
  color: #dff7ff;
  border: 1px solid rgba(117,212,255,.22);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.search-row button:hover, .primary-button:hover, .ghost-button:hover, .share-button:hover {
  transform: translateY(-2px);
}

.hero-section, .inner-hero {
  position: relative;
  overflow: clip;
  min-height: 760px;
  display: grid;
  align-items: end;
  padding: 48px 0 92px;
}
.inner-hero { min-height: 430px; padding-bottom: 64px; }
.hero-media, .inner-hero-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(5,9,14,.88) 0%, rgba(5,9,14,.62) 38%, rgba(5,9,14,.28) 100%);
}
.hero-grid, .inner-hero-copy {
  position: relative;
  z-index: 2;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, .7fr);
  gap: 28px;
  align-items: end;
}
.hero-copy, .hero-sidecard, .inner-hero-copy {
  border: 1px solid rgba(255,255,255,.1);
  background: linear-gradient(180deg, rgba(7,14,21,.72), rgba(7,14,21,.46));
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}
.hero-copy, .inner-hero-copy { padding: 30px; border-radius: 26px 26px 12px 26px; }
.hero-sidecard {
  padding: 26px;
  border-radius: 16px 26px 26px 16px;
}
.hero-intro { max-width: 60ch; font-size: 1.06rem; color: #d5dce2; }
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0; }
.tag-chip, .pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: #fff;
  border-radius: 999px;
  padding: 8px 12px;
  font-size: .84rem;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 24px 0 8px;
}
.hero-stats div, .plain-card, .mini-card, .review-card, .faq-card, .timeline-card, .mcp-demo-panel {
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.025));
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}
.hero-stats div { padding: 16px; }
.hero-stats strong { display: block; font-size: 1.7rem; font-family: 'Oswald', sans-serif; color: #fff; }
.hero-stats span { color: var(--muted); font-size: .9rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.hero-sidecard ul { display: grid; gap: 12px; }
.hero-sidecard li {
  color: #ecf0f4;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.section-block { padding: 86px 0; position: relative; }
.top-shift { margin-top: -54px; z-index: 3; }
.contrast-block { background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.01)); }
.warm-block { background: linear-gradient(180deg, rgba(255,106,60,.04), rgba(255,255,255,.01)); }
.section-heading { max-width: 780px; margin-bottom: 28px; }
.section-heading p:last-child { color: var(--muted); }

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(300px, .82fr);
  gap: 28px;
  align-items: start;
}
.split-layout.reverse { grid-template-columns: minmax(300px, .84fr) minmax(0, 1.16fr); }
.mini-grid, .feature-list, .faq-grid, .review-grid, .video-grid, .timeline-grid {
  display: grid;
  gap: 16px;
}
.mini-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.feature-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.faq-grid, .review-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.timeline-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.video-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.mini-card, .plain-card, .faq-card, .review-card, .timeline-card { padding: 22px; }
.mini-card h3, .plain-card h3, .timeline-card h3, .review-card h3, .faq-card h3 { font-size: 1.2rem; }
.mini-card p, .plain-card p, .timeline-card p, .review-card p, .faq-card p { color: var(--muted); }
.mini-card.alt { background: linear-gradient(180deg, rgba(255,106,60,.06), rgba(255,255,255,.02)); }
.feature-list article {
  padding: 20px;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.image-panel, .contact-photo-card {
  position: relative;
  overflow: hidden;
  border-radius: 26px;
  border: 1px solid var(--line);
  min-height: 100%;
  box-shadow: var(--shadow);
}
.image-panel img, .contact-photo-card img { width: 100%; height: 100%; min-height: 360px; object-fit: cover; }
.image-panel.compact img { min-height: 320px; }
.panel-caption, .photo-caption {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 20px;
  background: rgba(6, 12, 18, .74);
  border: 1px solid rgba(255,255,255,.1);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  padding: 16px;
}

.video-card {
  display: grid;
  gap: 0;
  border-radius: 20px;
  overflow: hidden;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.1);
  box-shadow: var(--shadow);
  transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.video-card:hover { transform: translateY(-4px); border-color: rgba(255,106,60,.4); }
.video-frame {
  position: relative;
  min-height: 220px;
  overflow: hidden;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.video-poster {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: end start;
  padding: 18px;
  overflow: hidden;
}
.video-poster::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,.04), transparent 30%, rgba(6,10,14,.35));
  mix-blend-mode: screen;
}
.video-poster span {
  position: relative;
  z-index: 1;
  font-family: 'Oswald', sans-serif;
  font-size: 2.2rem;
  letter-spacing: .18em;
  color: rgba(255,255,255,.18);
}
.play-button {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%) scale(.8);
  width: 84px;
  height: 84px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.3);
  background: rgba(5,8,12,.58);
  color: #fff;
  font-size: 1.6rem;
  opacity: 0;
  transition: .26s ease;
  box-shadow: 0 0 0 0 rgba(255,106,60,.38);
}
.video-card:hover .play-button { opacity: 1; transform: translate(-50%, -50%) scale(1); box-shadow: 0 0 0 18px rgba(255,106,60,.10); }
.video-copy { padding: 20px; }
.video-copy h3 { min-height: 56px; }
.video-copy p { color: var(--muted); }
.video-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: #d8dee4;
  font-size: .88rem;
}

.two-column-stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}
.json-render-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}
.json-card {
  padding: 20px;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.json-card p, .json-card li { color: var(--muted); }
.json-card ul { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.json-card ul li {
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
}
.json-details {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: rgba(255,255,255,.02);
}
.json-details summary {
  padding: 14px 18px;
  cursor: pointer;
  font-weight: 700;
}
.json-details pre {
  margin: 0;
  padding: 16px 18px 22px;
  color: #dce8f2;
  white-space: pre-wrap;
  overflow-x: auto;
  font-size: .84rem;
  background: rgba(3, 7, 12, .45);
}
.inline-space { margin-top: 20px; }
.open-card { margin-top: 56px; }

.logo-wall {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}
.logo-wall span {
  display: grid;
  place-items: center;
  min-height: 96px;
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border: 1px solid var(--line);
  border-radius: 16px;
  color: #f3f6f8;
  font-family: 'Oswald', 'Noto Sans SC', sans-serif;
  letter-spacing: .08em;
}
.qr-app-card {
  margin-top: 18px;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
}

.review-card .score {
  color: var(--accent-soft);
  font-family: 'Oswald', sans-serif;
  font-size: 2rem;
  margin-bottom: 6px;
}
.share-row { display: flex; flex-wrap: wrap; gap: 12px; }
.share-button {
  background: rgba(255,255,255,.05);
  color: #fff;
  border: 1px solid rgba(255,255,255,.12);
}
.bullet-list {
  display: grid;
  gap: 12px;
}
.bullet-list li {
  padding: 14px 16px 14px 20px;
  border-left: 3px solid var(--accent);
  background: rgba(255,255,255,.03);
  border-radius: 0 14px 14px 0;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--muted);
  padding-top: 16px;
}
.breadcrumb a { color: #dce4eb; }

.site-footer {
  padding: 40px 0 18px;
  border-top: 1px solid rgba(255,255,255,.08);
  background: linear-gradient(180deg, rgba(0,0,0,.14), rgba(0,0,0,.32));
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(220px, .7fr) minmax(260px, .9fr);
  gap: 22px;
  align-items: start;
}
.footer-brand { margin-bottom: 16px; }
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: .92rem;
}
.footer-qr-wrap {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.qr-card, .mcp-demo-panel {
  padding: 18px;
  text-align: center;
}
.qr-card p { margin: 10px 0 0; color: var(--muted); font-size: .92rem; }
.mcp-status {
  margin-top: 16px;
  padding: 12px;
  border-radius: 12px;
  background: rgba(255,255,255,.04);
  color: var(--gold);
  font-family: 'Oswald', sans-serif;
  letter-spacing: .12em;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-top: 18px;
  margin-top: 18px;
  border-top: 1px solid rgba(255,255,255,.08);
  color: var(--muted);
  font-size: .94rem;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 999;
  padding: 14px 18px;
  border-radius: 14px;
  background: rgba(8, 15, 24, .94);
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: var(--shadow);
  color: #fff;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: .25s ease;
}
.toast.show { opacity: 1; transform: translateY(0); }

@media (max-width: 1100px) {
  .hero-grid, .split-layout, .split-layout.reverse, .two-column-stack, .footer-grid {
    grid-template-columns: 1fr;
  }
  .video-grid, .faq-grid, .review-grid, .feature-list, .timeline-grid, .mini-grid { grid-template-columns: 1fr 1fr; }
  .open-card { margin-top: 0; }
}
@media (max-width: 760px) {
  .nav-shell { flex-direction: column; align-items: flex-start; padding: 14px 0; }
  .main-nav { justify-content: flex-start; }
  .search-row, .hero-stats, .video-grid, .faq-grid, .review-grid, .feature-list, .timeline-grid, .mini-grid, .logo-wall, .footer-qr-wrap {
    grid-template-columns: 1fr;
  }
  .hero-section { min-height: 680px; }
  .hero-copy, .hero-sidecard, .inner-hero-copy { padding: 22px; }
  .hero-actions, .share-row { flex-direction: column; }
  .footer-bottom { flex-direction: column; }
  .container { width: min(var(--max), calc(100% - 24px)); }
  h1 { font-size: clamp(2.4rem, 13vw, 3.5rem); }
}