/* 水巷影棚设计体系：以木构、水巷、桥影与琥珀灯火为核心母题，整体强调非对称布局、媒体质感和纪实影像气息。 */
:root {
  --bg: #0f1f24;
  --bg-soft: #132830;
  --panel: #183039;
  --panel-2: #efe5d3;
  --text: #f8f3ea;
  --text-dim: #c8b8a1;
  --dark-text: #2f251d;
  --amber: #dda15e;
  --amber-strong: #f0b870;
  --wood: #7e5a43;
  --canal: #26505e;
  --mist: #95a7af;
  --line: rgba(255, 235, 205, 0.14);
  --shadow: 0 30px 90px rgba(0,0,0,0.34);
  --radius: 28px;
  --container: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Noto Sans SC', sans-serif;
  background:
    radial-gradient(circle at top left, rgba(219,161,94,0.14), transparent 26%),
    radial-gradient(circle at right 20%, rgba(53,109,126,0.14), transparent 22%),
    linear-gradient(180deg, #0f1f24 0%, #13272f 38%, #102227 100%);
  color: var(--text);
  line-height: 1.75;
}

img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1rem; }
ul, ol { margin: 0; padding-left: 1.2rem; }
.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;
}
.container {
  width: min(calc(100% - 2rem), var(--container));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(11, 24, 29, 0.84);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.shell-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1rem 0 0.85rem;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  min-width: 0;
}
.brand-mark strong {
  display: block;
  font-family: 'Noto Serif SC', serif;
  font-size: 1.45rem;
  letter-spacing: 0.04em;
}
.brand-mark em {
  display: block;
  color: var(--text-dim);
  font-style: normal;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  justify-content: flex-end;
}
.nav-link {
  padding: 0.72rem 1rem;
  border-radius: 999px;
  color: var(--text-dim);
  border: 1px solid transparent;
  transition: all .28s ease;
  font-size: 0.94rem;
}
.nav-link:hover,
.nav-link.is-active {
  color: var(--text);
  border-color: rgba(240,184,112,0.38);
  background: rgba(240,184,112,0.09);
  transform: translateY(-1px);
}
.search-ribbon {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(220px, 0.9fr);
  gap: 1rem;
  padding: 0 0 1rem;
  align-items: center;
}
.fake-search {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.85rem;
  background: rgba(239,229,211,0.08);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 18px;
  padding: 0.6rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
}
.fake-search input {
  width: 100%;
  border: 0;
  outline: none;
  border-radius: 12px;
  padding: 0.95rem 1rem;
  font-size: 0.96rem;
  color: var(--text);
  background: rgba(9,18,22,0.42);
}
.fake-search input::placeholder { color: rgba(248,243,234,0.5); }
.fake-search button,
.btn-primary,
.btn-secondary,
.ghost-btn,
.share-btn,
.action-btn {
  border: 0;
  cursor: pointer;
  font: inherit;
}
.fake-search button,
.btn-primary,
.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.25rem;
  border-radius: 999px;
  color: #23170f;
  background: linear-gradient(135deg, var(--amber-strong), #f8d092);
  box-shadow: 0 16px 26px rgba(229, 167, 93, 0.22);
  font-weight: 700;
  transition: transform .25s ease, box-shadow .25s ease;
}
.fake-search button:hover,
.btn-primary:hover,
.action-btn:hover { transform: translateY(-2px); box-shadow: 0 20px 34px rgba(229, 167, 93, 0.28); }
.btn-secondary,
.ghost-btn,
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.2rem;
  border-radius: 999px;
  color: var(--text);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.09);
  transition: all .25s ease;
}
.btn-secondary:hover,
.ghost-btn:hover,
.share-btn:hover { background: rgba(255,255,255,0.12); transform: translateY(-2px); }
.search-hint {
  color: var(--text-dim);
  font-size: 0.94rem;
  margin: 0;
  text-align: right;
}

.hero-scene,
.inner-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(360px, 0.96fr);
  gap: clamp(1.6rem, 4vw, 3.4rem);
  align-items: center;
  padding: 4.5rem 0 2.8rem;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.9rem;
  background: rgba(255, 239, 214, 0.08);
  border: 1px solid rgba(240, 184, 112, 0.2);
  border-radius: 999px;
  color: var(--amber-strong);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.1rem;
}
h1, h2, h3, h4 {
  margin: 0 0 1rem;
  line-height: 1.2;
}
h1, h2 {
  font-family: 'Noto Serif SC', serif;
  letter-spacing: 0.02em;
}
.hero-copy h1,
.inner-hero-copy h1 {
  font-size: clamp(2.2rem, 5vw, 4.6rem);
  max-width: 11ch;
}
.hero-copy p,
.inner-hero-copy p { color: #ecdfcf; max-width: 65ch; }
.hero-tags,
.tag-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}
.hero-tags { margin: 1.4rem 0; }
.hero-tags span,
.tag-line span {
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-dim);
  font-size: 0.84rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 1.7rem;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.hero-stats article,
.hero-note-card,
.insight-panel,
.note-band-card {
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
}
.hero-stats article { padding: 1rem 1rem 1.1rem; }
.hero-stats strong { display: block; font-size: 1.05rem; margin-bottom: 0.35rem; }
.hero-stats span { color: var(--text-dim); font-size: 0.9rem; }
.hero-visual-stack,
.inner-hero-visual {
  position: relative;
  min-width: 0;
}
.hero-main-frame,
.howto-photo,
.office-shot,
.inner-hero-visual {
  margin: 0;
  border-radius: 32px;
  overflow: hidden;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
}
.hero-main-frame img,
.howto-photo img,
.office-shot img,
.inner-hero-visual img { width: 100%; height: auto; }
.hero-main-frame figcaption,
.office-shot figcaption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem 1.15rem;
  background: rgba(10,18,20,0.72);
  color: var(--text-dim);
  font-size: 0.9rem;
}
.hero-main-frame figcaption strong { color: var(--text); }
.hero-note-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.95rem;
  margin-top: 1rem;
}
.hero-note-card { padding: 1rem; }
.hero-note-card strong,
.hero-note-card em { display: block; }
.hero-note-card em { color: var(--amber-strong); font-style: normal; margin: 0.2rem 0 0.7rem; font-size: 0.92rem; }
.hero-note-card p { color: var(--text-dim); font-size: 0.92rem; margin: 0; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-dim);
  font-size: 0.95rem;
  padding-top: 1.25rem;
}
.breadcrumb strong { color: var(--text); }

.section-block { padding: 2rem 0 3rem; }
.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 2rem;
  align-items: end;
  margin-bottom: 1.4rem;
}
.section-heading span {
  color: var(--amber-strong);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.83rem;
  display: block;
  margin-bottom: 0.55rem;
}
.section-heading h2 { font-size: clamp(1.8rem, 3vw, 3.1rem); }
.section-heading p { color: var(--text-dim); max-width: 64ch; }

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}
.video-card {
  border-radius: 28px;
  overflow: hidden;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
  transition: transform .32s ease, box-shadow .32s ease;
}
.video-card:hover { transform: translateY(-4px); box-shadow: 0 30px 100px rgba(0,0,0,0.42); }
.video-visual {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #102025;
}
.video-visual img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s ease; }
.video-card:hover .video-visual img { transform: scale(1.04); }
.video-play {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -44%);
  width: 74px;
  height: 74px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(248, 208, 146, 0.9);
  color: #1f140d;
  font-size: 1.55rem;
  box-shadow: 0 20px 40px rgba(0,0,0,0.28);
  opacity: 0;
  transition: opacity .28s ease, transform .28s ease;
}
.video-card:hover .video-play { opacity: 1; transform: translate(-50%, -50%); }
.video-duration {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
  background: rgba(7,12,15,0.74);
  color: #fff5e7;
  font-size: 0.78rem;
}
.video-copy { padding: 1.05rem 1.05rem 1.2rem; }
.meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  color: var(--text-dim);
  font-size: 0.82rem;
  margin-bottom: 0.6rem;
}
.video-copy h3 {
  font-size: 1.15rem;
  margin-bottom: 0.55rem;
  min-height: 3.2em;
}
.video-copy p { color: var(--text-dim); font-size: 0.93rem; }
.tag-line { margin-top: 0.9rem; }

.split-block,
.contact-layout,
.howto-wrap,
.faq-review-grid,
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 1.4rem;
  align-items: start;
}
.copy-flow,
.insight-panel ul,
.howto-list { color: var(--text-dim); }
.copy-flow p + p { margin-top: 1rem; }
.insight-panel,
.note-band-card { padding: 1.2rem 1.25rem; }
.insight-panel h3,
.note-band-card h2 { margin-bottom: 0.85rem; }
.insight-panel li + li { margin-top: 0.5rem; }

.feature-grid,
.expert-grid,
.contact-grid,
.logo-wall,
.share-row { display: grid; gap: 1rem; }
.feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.expert-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.contact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.logo-wall { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-bottom: 1.2rem; }
.share-row { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.feature-card,
.expert-card,
.contact-card,
.partner-card,
.faq-item,
.review-card,
.mcp-demo,
.toast {
  border-radius: 24px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
}
.feature-card,
.expert-card,
.contact-card,
.partner-card,
.review-card,
.faq-item,
.mcp-demo { padding: 1.1rem 1.1rem 1.2rem; }
.feature-card .icon-badge,
.partner-card strong:first-child {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(240,184,112,.2), rgba(240,184,112,.04));
  color: var(--amber-strong);
  margin-bottom: 0.9rem;
  font-family: 'Noto Serif SC', serif;
  font-size: 1.2rem;
}
.feature-card h3,
.expert-card h3,
.contact-card h3,
.partner-card h3,
.review-card h3 { margin-bottom: 0.55rem; }
.feature-card p,
.expert-card p,
.contact-card p,
.partner-card p,
.review-card p,
.faq-item p,
.mcp-demo p { color: var(--text-dim); }
.expert-meta,
.contact-card strong,
.review-role,
.partner-type { display: block; color: var(--amber-strong); font-size: 0.88rem; margin-bottom: 0.45rem; }
.expert-actions { display: flex; gap: 0.7rem; flex-wrap: wrap; margin-top: 1rem; }
.action-btn.muted { background: rgba(255,255,255,0.08); color: var(--text); box-shadow: none; }
.faq-item + .faq-item { margin-top: 0.8rem; }
.faq-item h3 { font-size: 1.08rem; margin-bottom: 0.45rem; }
.review-card { position: relative; }
.review-card::before {
  content: '“';
  position: absolute;
  right: 1rem;
  top: 0.2rem;
  font-size: 4rem;
  color: rgba(240,184,112,0.18);
  font-family: 'Noto Serif SC', serif;
  line-height: 1;
}

.logo-wall-section .logo-wall { margin-top: 1.1rem; }
.partner-card strong:first-child { margin-right: 0.5rem; }
.partner-card h3 { font-size: 1.02rem; }
.howto-wrap { margin-top: 1.4rem; }
.howto-copy { padding: 0.5rem 0; }
.howto-list li + li { margin-top: 0.9rem; }

.faq-review-grid { align-items: start; }
.reviews-grid { display: grid; gap: 0.9rem; }

.mcp-demo { margin-top: 1rem; }
.mcp-node-row { display: flex; flex-wrap: wrap; gap: 0.65rem; margin: 1rem 0; }
.mcp-node {
  padding: 0.6rem 0.9rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.07);
  color: var(--text-dim);
  border: 1px solid rgba(255,255,255,0.08);
  font-size: 0.84rem;
}
.mcp-node.is-ready { color: #e9f6ef; background: rgba(53, 125, 82, 0.26); border-color: rgba(98, 205, 134, 0.3); }

.note-band { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }

.site-footer {
  margin-top: 2rem;
  padding: 2rem 0 2.4rem;
  background: linear-gradient(180deg, rgba(10,17,19,0), rgba(7,12,14,0.88));
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-brand-panel p { color: var(--text-dim); }
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1rem;
}
.footer-brand strong {
  display: block;
  font-family: 'Noto Serif SC', serif;
  font-size: 1.3rem;
}
.footer-brand span { color: var(--text-dim); font-size: 0.92rem; }
.footer-update, .footer-copy { margin-top: 0.5rem; }
.footer-qrs {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
  flex-wrap: wrap;
}
.qr-card {
  width: 170px;
  padding: 1rem;
  border-radius: 24px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  text-align: center;
}
.qr-card img {
  width: 100%;
  height: auto;
  border-radius: 18px;
  margin-bottom: 0.8rem;
}
.qr-card strong { display: block; margin-bottom: 0.35rem; }
.qr-card span { color: var(--text-dim); font-size: 0.9rem; }

.toast {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  max-width: 320px;
  padding: 1rem 1.1rem;
  color: var(--text);
  transform: translateY(18px);
  opacity: 0;
  pointer-events: none;
  transition: all .28s ease;
  z-index: 99;
  backdrop-filter: blur(14px);
}
.toast.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1100px) {
  .hero-scene,
  .inner-hero,
  .search-ribbon,
  .split-block,
  .contact-layout,
  .faq-review-grid,
  .footer-grid,
  .section-heading,
  .howto-wrap { grid-template-columns: 1fr; }
  .main-nav { justify-content: flex-start; }
  .hero-stats,
  .share-row,
  .feature-grid,
  .expert-grid,
  .contact-grid,
  .logo-wall,
  .video-grid,
  .hero-note-grid,
  .note-band { grid-template-columns: 1fr 1fr; }
  .search-hint { text-align: left; }
}

@media (max-width: 760px) {
  .container { width: min(calc(100% - 1.25rem), var(--container)); }
  .shell-top { align-items: flex-start; }
  .brand-mark img { width: 52px; height: 52px; }
  .hero-stats,
  .share-row,
  .feature-grid,
  .expert-grid,
  .contact-grid,
  .logo-wall,
  .video-grid,
  .hero-note-grid,
  .note-band { grid-template-columns: 1fr; }
  .hero-copy h1,
  .inner-hero-copy h1 { max-width: none; }
  .hero-main-frame figcaption,
  .office-shot figcaption { flex-direction: column; }
  .footer-qrs { justify-content: flex-start; }
  .fake-search { grid-template-columns: 1fr; }
  .main-nav { gap: 0.45rem; }
  .nav-link { padding: 0.58rem 0.82rem; font-size: 0.9rem; }
  .section-block { padding: 1.5rem 0 2.2rem; }
}