/* AI影像工坊设计提醒：新工业电影感；机油黑、钛灰蓝、焊花橙；非对称布局；粗粝金属质感；禁止稀释品牌存在感 */
:root {
  --bg: #0a0f14;
  --panel: #121a22;
  --panel-soft: #18222c;
  --line: #2a3b4a;
  --text: #ecf1f4;
  --muted: #9aacb8;
  --accent: #ff8b2c;
  --accent-soft: #ffb26f;
  --steel: #7fa0b7;
  --success: #7fd2b7;
  --shadow: 0 26px 70px rgba(0,0,0,.35);
  --radius-lg: 30px 12px 30px 12px;
  --radius-md: 20px 8px 20px 8px;
  --radius-sm: 14px 6px 14px 6px;
  --container: minmax(0, 1280px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 15% 20%, rgba(255,139,44,.12), transparent 32%),
    radial-gradient(circle at 85% 5%, rgba(113,155,185,.12), transparent 28%),
    linear-gradient(180deg, #0a0f14 0%, #0d141c 42%, #0a0f14 100%);
  color: var(--text);
  line-height: 1.7;
  letter-spacing: .02em;
}

img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1rem; }
h1, h2, h3, h4, h5, h6 { margin: 0 0 1rem; line-height: 1.18; font-weight: 800; letter-spacing: .01em; }
.container { width: min(1280px, calc(100% - 32px)); margin: 0 auto; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}

.site-header {
  position: sticky; top: 0; z-index: 60;
  backdrop-filter: blur(18px);
  background: rgba(7, 11, 16, .78);
  border-bottom: 1px solid rgba(127,160,183,.15);
}
.header-bar {
  display: grid; grid-template-columns: 250px 1fr; gap: 24px; align-items: center;
  padding: 18px 0 12px;
}
.brand-mark img { width: 208px; height: auto; filter: drop-shadow(0 10px 25px rgba(0,0,0,.25)); }
.main-nav {
  display: flex; gap: 12px; flex-wrap: wrap; justify-content: flex-end;
}
.nav-link {
  padding: 10px 14px; border: 1px solid transparent; border-radius: 999px;
  color: var(--muted); font-size: 14px; transition: .28s ease;
  background: linear-gradient(180deg, rgba(24,34,44,.12), rgba(24,34,44,0));
}
.nav-link:hover, .nav-link.is-active {
  color: var(--text); border-color: rgba(255,139,44,.35);
  background: rgba(255,139,44,.1); transform: translateY(-1px);
}
.nav-search-wrap { padding-bottom: 16px; display: grid; grid-template-columns: 1fr; gap: 8px; }
.nav-search {
  display: grid; grid-template-columns: 1fr 180px; gap: 10px;
  background: rgba(18,26,34,.95); border: 1px solid rgba(127,160,183,.15); padding: 12px;
  border-radius: var(--radius-md); box-shadow: var(--shadow);
}
.nav-search input {
  border: 0; outline: 0; background: rgba(255,255,255,.03); color: var(--text);
  padding: 14px 16px; border-radius: 12px; font-size: 15px;
}
.nav-search button, .btn {
  border: 0; outline: 0; cursor: pointer;
  border-radius: 999px; padding: 14px 18px; font-weight: 700;
  transition: .25s ease; letter-spacing: .03em;
}
.nav-search button, .btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-soft) 100%);
  color: #17120f;
  box-shadow: 0 14px 30px rgba(255,139,44,.24);
}
.btn-ghost {
  background: rgba(127,160,183,.08); color: var(--text); border: 1px solid rgba(127,160,183,.22);
}
.nav-search button:hover, .btn:hover { transform: translateY(-2px); }
.search-suggestions {
  display: none; gap: 8px; flex-wrap: wrap; padding: 0 4px 4px;
}
.search-suggestions.is-visible { display: flex; }
.search-suggestions span {
  background: rgba(255,139,44,.1); color: var(--accent-soft); border: 1px solid rgba(255,139,44,.2);
  border-radius: 999px; padding: 8px 12px; font-size: 13px;
}

.breadcrumb-wrap { padding: 18px 0 8px; }
.breadcrumb {
  color: var(--muted); font-size: 13px; display: inline-flex; gap: 10px; align-items: center;
  background: rgba(18,26,34,.86); border: 1px solid rgba(127,160,183,.15);
  padding: 10px 14px; border-radius: 999px;
}

.hero, .sub-hero {
  position: relative; overflow: hidden; min-height: 78vh;
  border-bottom: 1px solid rgba(127,160,183,.12);
}
.sub-hero { min-height: 52vh; }
.hero-image {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  filter: saturate(.9) contrast(1.03) brightness(.55);
}
.hero-overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(8,12,16,.88) 0%, rgba(8,12,16,.76) 38%, rgba(8,12,16,.28) 100%),
    linear-gradient(180deg, rgba(9,13,18,.1) 0%, rgba(9,13,18,.65) 100%);
}
.hero-grid {
  position: relative; z-index: 1; padding: 110px 0 86px;
  display: grid; grid-template-columns: 1.25fr .9fr; gap: 40px; align-items: end;
}
.sub-hero-copy {
  position: relative; z-index: 1; padding: 120px 0 70px; max-width: 820px;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  text-transform: uppercase; font-size: 12px; letter-spacing: .18em; color: var(--accent-soft);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: ""; width: 44px; height: 1px; background: linear-gradient(90deg, var(--accent), transparent);
}
.hero-copy h1, .sub-hero-copy h1 { font-size: clamp(42px, 6vw, 78px); max-width: 780px; }
.lead { font-size: clamp(17px, 2vw, 21px); color: #d8e4ec; max-width: 760px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 18px; }
.hero-note {
  color: var(--muted); max-width: 720px; font-size: 14px; padding-left: 16px; border-left: 2px solid rgba(255,139,44,.45);
}
.hero-aside { display: grid; gap: 18px; }
.hero-panel, .metric-card, .panel, .json-card, .info-card, .review-card, .faq-item, .expert-card, .media-column, .text-card {
  background: linear-gradient(180deg, rgba(18,26,34,.96), rgba(18,26,34,.92));
  border: 1px solid rgba(127,160,183,.14);
  box-shadow: var(--shadow);
}
.hero-panel, .panel, .json-card, .info-card, .review-card, .faq-item, .expert-card, .media-column, .text-card { border-radius: var(--radius-lg); }
.hero-panel { padding: 28px; }
.hero-panel h2 { font-size: 28px; }
.metric-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.metric-card {
  padding: 22px; border-radius: var(--radius-md); background: linear-gradient(180deg, rgba(18,26,34,.98), rgba(27,39,50,.92));
}
.metric-card p { font-size: 14px; color: var(--muted); margin-bottom: 10px; }
.metric-card strong { font-size: 34px; color: var(--accent-soft); }

main { position: relative; z-index: 1; }
.panel { padding: 34px; margin: 28px auto; overflow: hidden; }
.panel-highlight { margin-top: -46px; position: relative; z-index: 4; }
.section-head { margin-bottom: 24px; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 46px); max-width: 920px; }
.split-head {
  display: grid; grid-template-columns: 1.08fr .92fr; gap: 26px; align-items: end;
}
.section-copy, .seo-copy { color: var(--muted); font-size: 16px; }

.video-grid, .expert-grid, .review-grid {
  display: grid; gap: 18px;
}
.video-grid { grid-template-columns: repeat(3, 1fr); }
.video-card {
  border-radius: var(--radius-md); overflow: hidden; background: rgba(255,255,255,.02);
  border: 1px solid rgba(127,160,183,.14); transition: .28s ease;
}
.video-card:hover { transform: translateY(-4px); box-shadow: 0 28px 58px rgba(0,0,0,.26); }
.video-cover {
  position: relative; min-height: 250px; overflow: hidden;
  background: #0d141a;
}
.video-cover video {
  width: 100%; height: 100%; min-height: 250px; object-fit: cover; filter: brightness(.82);
  transition: transform .45s ease, filter .35s ease;
}
.video-card:hover video { transform: scale(1.03); filter: brightness(.58); }
.video-play {
  position: absolute; inset: auto auto 20px 20px; width: 72px; height: 72px;
  border-radius: 50%; background: rgba(255,139,44,.92); display: grid; place-items: center;
  transform: scale(.84); opacity: 0; pointer-events: none; transition: .3s ease; box-shadow: 0 20px 30px rgba(0,0,0,.28);
}
.video-card.is-hover .video-play, .video-card:hover .video-play { opacity: 1; transform: scale(1); }
.video-play span {
  width: 0; height: 0; border-top: 11px solid transparent; border-bottom: 11px solid transparent; border-left: 18px solid #20150d; margin-left: 5px;
}
.video-badge, .video-duration {
  position: absolute; top: 18px; border-radius: 999px; padding: 6px 10px; font-size: 12px; font-weight: 700;
  backdrop-filter: blur(8px);
}
.video-badge { left: 18px; background: rgba(255,139,44,.9); color: #17120f; }
.video-duration { right: 18px; background: rgba(6,9,12,.72); border: 1px solid rgba(255,255,255,.1); }
.video-meta { padding: 18px; }
.video-meta h3 { font-size: 24px; margin-bottom: 10px; }
.video-meta p { color: var(--muted); min-height: 72px; }
.video-stats { display: flex; flex-wrap: wrap; gap: 10px; color: var(--accent-soft); font-size: 13px; }

.media-columns, .process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.media-column, .process-grid article { padding: 24px; border-radius: var(--radius-md); }
.media-column h3, .process-grid h3 { font-size: 24px; }
.media-column ul { margin: 0; padding-left: 20px; color: var(--muted); }
.media-column li { margin-bottom: 8px; }

.feature-slab, .community-layout, .contact-layout, .two-col {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 22px; align-items: stretch;
}
.image-card, .json-card, .info-card, .text-card { overflow: hidden; }
.image-card, .text-card { border-radius: var(--radius-lg); }
.image-card img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; filter: brightness(.9) contrast(1.02); }
.image-card.tall img { min-height: 560px; }
.feature-copy { display: grid; gap: 16px; }
.feature-copy h3 { font-size: 30px; }
.mini-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.mini-grid article, .process-grid article {
  background: rgba(255,255,255,.02); border: 1px solid rgba(127,160,183,.12); padding: 18px; border-radius: var(--radius-sm);
}
.mini-grid strong, .process-grid h3 { display: block; margin-bottom: 10px; font-size: 22px; }
.mini-grid span { color: var(--muted); }

.json-stack, .contact-card-grid { display: grid; gap: 18px; }
.contact-card-grid { grid-template-columns: repeat(2, 1fr); }
.json-card, .info-card, .review-card, .expert-card, .text-card { padding: 24px; }
.json-card h3, .info-card h3, .review-card h3, .expert-card h3, .text-card h3 { font-size: 24px; }
.json-card pre {
  margin: 0; white-space: pre-wrap; word-break: break-word; color: #d4e0e8;
  font-family: "Consolas", "SFMono-Regular", monospace; font-size: 13px; line-height: 1.7;
  background: rgba(0,0,0,.22); padding: 16px; border-radius: var(--radius-sm); border: 1px solid rgba(127,160,183,.1);
}
.json-card.compact pre { min-height: 170px; }

.expert-grid { grid-template-columns: repeat(2, 1fr); }
.expert-role { color: var(--accent-soft); }
.expert-list { margin: 0 0 1rem 1rem; color: var(--muted); }
.expert-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }
.expert-actions a {
  padding: 10px 14px; border-radius: 999px; background: rgba(255,139,44,.1); border: 1px solid rgba(255,139,44,.18); color: var(--accent-soft);
}

.qr-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 20px;
}
.qr-card {
  margin: 0; padding: 18px; border-radius: var(--radius-md); background: rgba(255,255,255,.03);
  border: 1px solid rgba(127,160,183,.14);
}
.qr-card img { width: 100%; border-radius: 18px; background: #fff; }
.qr-card figcaption { margin-top: 12px; color: var(--muted); }

.review-grid { grid-template-columns: repeat(3, 1fr); }
.review-card h3 { font-size: 20px; }
.stars { color: var(--accent); letter-spacing: .12em; margin-bottom: 12px; }

.faq-list { display: grid; gap: 14px; }
.faq-item { overflow: hidden; }
.faq-question {
  width: 100%; background: transparent; color: var(--text); border: 0; padding: 20px 24px;
  display: flex; align-items: center; justify-content: space-between; text-align: left; font-size: 18px; font-weight: 700;
}
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .3s ease, padding .3s ease; padding: 0 24px; }
.faq-item.is-open .faq-answer { max-height: 200px; padding: 0 24px 22px; }
.faq-item.is-open .faq-question strong { transform: rotate(45deg); }
.faq-question strong { transition: .25s ease; color: var(--accent-soft); }

.mcp-panel .mcp-demo {
  display: grid; grid-template-columns: repeat(3, max-content) 1fr; gap: 12px; align-items: start;
}
.mcp-output {
  min-height: 96px; background: rgba(255,255,255,.03); border: 1px solid rgba(127,160,183,.14);
  border-radius: var(--radius-md); padding: 18px; color: #d4e0e8;
}

.panel-keywords { margin-bottom: 40px; }
.keyword-cloud, .tag-wall {
  display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px;
}
.keyword-chip {
  display: inline-flex; align-items: center; padding: 9px 13px; border-radius: 999px;
  background: rgba(127,160,183,.08); border: 1px solid rgba(127,160,183,.14); color: #d7e3ea; font-size: 14px;
}

.site-footer {
  margin-top: 42px; border-top: 1px solid rgba(127,160,183,.12);
  background: linear-gradient(180deg, rgba(9,13,17,.72), rgba(9,13,17,.95));
}
.footer-grid {
  display: grid; grid-template-columns: 1.2fr .9fr .9fr; gap: 24px; padding: 34px 0 60px;
}
.footer-logo { width: 180px; margin-bottom: 16px; }
.footer-intro, .site-footer p { color: var(--muted); }

@media (max-width: 1100px) {
  .hero-grid, .split-head, .feature-slab, .community-layout, .contact-layout, .two-col,
  .video-grid, .review-grid, .expert-grid, .media-columns, .process-grid, .footer-grid, .contact-card-grid {
    grid-template-columns: 1fr 1fr;
  }
  .header-bar { grid-template-columns: 1fr; }
  .main-nav { justify-content: flex-start; }
  .mcp-panel .mcp-demo { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .container { width: min(100% - 20px, 1280px); }
  .hero, .sub-hero { min-height: auto; }
  .hero-grid, .split-head, .feature-slab, .community-layout, .contact-layout, .two-col,
  .video-grid, .review-grid, .expert-grid, .media-columns, .process-grid, .footer-grid, .metric-grid, .qr-grid, .contact-card-grid {
    grid-template-columns: 1fr;
  }
  .nav-search { grid-template-columns: 1fr; }
  .panel { padding: 22px; }
  .hero-grid { padding: 96px 0 60px; }
  .sub-hero-copy { padding: 96px 0 48px; }
  .hero-copy h1, .sub-hero-copy h1 { font-size: 38px; }
  .video-cover { min-height: 220px; }
  .video-cover video { min-height: 220px; }
}