:root {
  --bg: #f2eae1;
  --panel: rgba(255, 251, 247, 0.86);
  --panel-strong: rgba(255, 247, 240, 0.95);
  --line: rgba(69, 46, 33, 0.16);
  --line-strong: rgba(69, 46, 33, 0.28);
  --text: #191513;
  --muted: #584d45;
  --muted-strong: #3e342d;
  --accent: #8e311e;
  --accent-deep: #512116;
  --gold: #bb8f4c;
  --shadow: 0 30px 90px rgba(58, 34, 18, 0.12);
  --shadow-soft: 0 16px 44px rgba(58, 34, 18, 0.08);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  --sans: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  font-weight: 500;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(187, 143, 76, 0.18), transparent 24%),
    radial-gradient(circle at 86% 10%, rgba(142, 49, 30, 0.16), transparent 21%),
    linear-gradient(180deg, #f8f3eb 0%, #ede1d3 100%);
}

img,
video {
  display: block;
  width: 100%;
  height: auto;
}

.page-shell {
  width: min(1280px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 22px 0 88px;
}

.index-tabs {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 16px;
  padding: 10px;
  border: 1px solid rgba(69, 46, 33, 0.14);
  border-radius: 22px;
  background: rgba(255, 250, 244, 0.82);
  box-shadow: 0 18px 50px rgba(58, 34, 18, 0.1);
  backdrop-filter: blur(18px);
}

.index-tabs a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 42px;
  padding: 9px 10px;
  border: 1px solid transparent;
  border-radius: 14px;
  color: var(--muted-strong);
  text-decoration: none;
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.index-tabs a span {
  color: var(--accent);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.index-tabs a:hover {
  transform: translateY(-1px);
  border-color: rgba(142, 49, 30, 0.18);
  background: rgba(142, 49, 30, 0.08);
  color: var(--accent-deep);
}

.index-tabs .index-home {
  background: rgba(142, 49, 30, 0.92);
  color: #fff5ec;
}

.index-tabs .index-home span {
  color: rgba(255, 235, 218, 0.88);
}

.index-tabs .index-home:hover {
  background: rgba(81, 33, 22, 0.96);
  color: #fff5ec;
}

.hero,
.section,
.panel,
.framed,
.strategy-card,
.closing {
  position: relative;
  overflow: hidden;
}

.hero {
  min-height: 88vh;
  border: 1px solid var(--line);
  border-radius: 34px;
  background: #201713;
  box-shadow: var(--shadow);
}

.hero-media,
.hero-video,
.hero-video-mask,
.hero-content {
  position: absolute;
  inset: 0;
}

.hero-video {
  height: 100%;
  object-fit: cover;
}

.hero-video-mask {
  background:
    linear-gradient(90deg, rgba(23, 18, 15, 0.88) 0%, rgba(23, 18, 15, 0.56) 36%, rgba(23, 18, 15, 0.24) 100%),
    linear-gradient(180deg, rgba(23, 18, 15, 0.3), rgba(23, 18, 15, 0.62));
}

.hero-content {
  z-index: 2;
  padding: 28px 34px 40px;
}

.hero-topbar,
.hero-main,
.meta-row,
.intro-grid,
.split-feature,
.dual-visual,
.concept-grid,
.strategy-grid,
.visual-stack,
.site-photo-band,
.site-photo-grid,
.render-gallery,
.hero-links {
  display: grid;
}

.hero-topbar {
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
}

.hero-main {
  grid-template-columns: 1.45fr 0.9fr;
  gap: 28px;
  min-height: calc(88vh - 68px);
  align-items: end;
  margin-top: 22px;
}

.eyebrow,
.section-kicker,
.card-label,
.strategy-index,
.hero-code {
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 700;
}

.eyebrow,
.section-kicker,
.card-label,
.strategy-index {
  color: var(--accent);
}

.hero .eyebrow,
.hero .hero-code,
.hero .section-kicker,
.hero .card-label {
  color: rgba(255, 243, 232, 0.84);
}

.hero h1,
.section h2,
.closing h2,
.site-photo-copy h3,
.strategy-card h3 {
  margin: 0;
  font-family: var(--serif);
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.hero h1 {
  max-width: 8.5ch;
  margin-top: 12px;
  font-size: clamp(56px, 9vw, 112px);
  font-weight: 700;
  color: #fff3e9;
}

.section h2,
.closing h2 {
  font-size: clamp(30px, 4vw, 52px);
  font-weight: 700;
}

.hero-lead,
.section p,
.card-text,
.fact-list,
.strategy-card p,
.hero-note p {
  font-size: 17px;
  line-height: 1.9;
}

.hero-lead {
  max-width: 39rem;
  margin: 26px 0 22px;
  color: rgba(255, 241, 228, 0.88);
  font-weight: 600;
}

.meta-row {
  grid-template-columns: repeat(3, max-content);
  gap: 12px;
  align-items: start;
}

.meta-row span,
.hero-links a {
  border: 1px solid rgba(255, 242, 230, 0.22);
  backdrop-filter: blur(10px);
}

.meta-row span {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 251, 246, 0.12);
  color: rgba(255, 244, 235, 0.9);
  font-size: 13px;
  font-weight: 600;
}

.hero-links {
  grid-template-columns: repeat(3, max-content);
  gap: 12px;
  margin-top: 24px;
}

.hero-links a {
  padding: 12px 18px;
  border-radius: 999px;
  background: rgba(255, 247, 240, 0.14);
  color: #fff0e5;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.hero-links a:hover {
  transform: translateY(-2px);
  background: rgba(255, 247, 240, 0.22);
  border-color: rgba(255, 242, 230, 0.38);
}

.hero-aside {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 18px;
}

.hero-card,
.hero-note {
  padding: 24px;
  border: 1px solid rgba(255, 241, 228, 0.16);
  border-radius: 24px;
  box-shadow: var(--shadow-soft);
}

.hero-card {
  background: rgba(77, 28, 19, 0.76);
  color: #fff5ec;
}

.hero-card .card-text,
.hero-note p {
  color: rgba(255, 240, 227, 0.82);
}

.card-quote {
  margin: 12px 0 10px;
  font-size: 36px;
  font-weight: 700;
  color: #fff5ec;
}

.hero-note {
  background: rgba(255, 248, 241, 0.1);
}

.hero-koi {
  position: absolute;
  right: -14px;
  bottom: -26px;
  width: min(48vw, 560px);
  opacity: 0.88;
  z-index: 1;
  pointer-events: none;
}

.section {
  margin-top: 24px;
  scroll-margin-top: 88px;
}

.section-heading,
.section-head {
  max-width: 760px;
  margin-bottom: 18px;
}

.panel,
.framed,
.strategy-card,
.closing,
.narrative-band {
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.panel,
.framed,
.strategy-card {
  background: var(--panel);
}

.panel,
.closing,
.band-copy {
  padding: 32px;
}

.intro-grid {
  grid-template-columns: 1.25fr 0.95fr;
  gap: 22px;
}

.facts {
  background: linear-gradient(180deg, rgba(255, 253, 249, 0.98), rgba(245, 236, 226, 0.94));
}

.fact-list {
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted-strong);
}

.fact-list li {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.fact-list li:last-child {
  border-bottom: 0;
}

.fact-list span {
  color: var(--muted);
  font-weight: 600;
}

.fact-list strong {
  max-width: 58%;
  text-align: right;
  font-weight: 800;
}

.analysis-card {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-width: 0;
  min-height: 560px;
  background: rgba(240, 236, 231, 0.82);
}

.analysis-card img {
  width: 100%;
  max-width: 100%;
  height: 100%;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
  background: #f5f0e8;
}

.analysis-row {
  display: grid;
  grid-template-columns: minmax(320px, 0.58fr) minmax(0, 1.42fr);
  gap: 22px;
  align-items: stretch;
}

.analysis-row > *,
.split-feature > * {
  min-width: 0;
}

.analysis-row-reverse {
  grid-template-columns: minmax(0, 1.38fr) minmax(320px, 0.62fr);
}

.analysis-row-dark {
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: linear-gradient(135deg, rgba(84, 33, 22, 0.98), rgba(112, 54, 38, 0.9));
  box-shadow: var(--shadow);
}

.analysis-row-dark .analysis-copy h2,
.analysis-row-dark .analysis-copy p,
.analysis-row-dark .section-kicker {
  color: #f7ede3;
}

.analysis-large {
  aspect-ratio: 16 / 9;
  min-height: 0;
}

.analysis-stack {
  display: grid;
  gap: 18px;
}

.analysis-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.narrative-band {
  background: linear-gradient(135deg, rgba(84, 33, 22, 0.98), rgba(112, 54, 38, 0.9));
}

.band-figure {
  margin: 0 32px 32px;
  background: rgba(255, 247, 240, 0.14);
  border-color: rgba(255, 238, 226, 0.18);
}

.band-figure img {
  background: rgba(255, 250, 246, 0.96);
}

.band-copy h2,
.band-copy p,
.narrative-band .section-kicker {
  color: #f7ede3;
}

.band-copy p {
  max-width: 920px;
  color: rgba(247, 237, 227, 0.86);
  font-weight: 600;
}

.split-feature,
.dual-visual,
.concept-grid {
  gap: 22px;
  align-items: stretch;
}

.split-feature {
  grid-template-columns: 0.88fr 1.12fr;
}

.split-reverse {
  grid-template-columns: 1.12fr 0.88fr;
}

.dual-visual {
  grid-template-columns: 1.08fr 0.92fr;
}

.visual-stack {
  grid-template-rows: 1.24fr 0.86fr;
  gap: 22px;
}

.concept-grid {
  grid-template-columns: 0.96fr 1.04fr;
}

.concept-copy {
  background: linear-gradient(180deg, rgba(255, 251, 245, 0.96), rgba(244, 234, 221, 0.9));
}

.split-copy,
.side-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.framed {
  padding: 14px;
  background: rgba(255, 252, 248, 0.94);
}

.framed img {
  border-radius: 18px;
}

.figure-large,
.wide-image,
.image-card {
  height: 100%;
}

.figure-large:not(.analysis-card) img,
.image-card img,
.render-gallery img {
  height: 100%;
  object-fit: cover;
}

.image-card {
  padding: 14px;
}

.full-bleed {
  padding: 34px;
  border-radius: 32px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(253, 249, 243, 0.94), rgba(244, 235, 223, 0.92));
  box-shadow: var(--shadow);
}

.full-bleed-light {
  background: linear-gradient(180deg, rgba(255, 251, 246, 0.98), rgba(244, 236, 226, 0.95));
}

.strategy-grid {
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.strategy-card {
  min-height: 228px;
  padding: 28px 24px;
  background: linear-gradient(180deg, rgba(255, 250, 244, 0.96), rgba(241, 230, 217, 0.94));
}

.strategy-card h3 {
  margin: 16px 0 10px;
  font-size: 24px;
  font-weight: 700;
}

.render-gallery-section {
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: linear-gradient(180deg, rgba(255, 251, 246, 0.98), rgba(243, 233, 221, 0.94));
  box-shadow: var(--shadow);
}

.render-gallery {
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
}

.render-gallery .gallery-large {
  grid-row: span 2;
  min-height: 720px;
}

.render-gallery .gallery-wide {
  min-height: 360px;
}

.render-gallery .gallery-tall {
  min-height: 420px;
}

.render-gallery .framed:not(.gallery-large):not(.gallery-tall) {
  min-height: 260px;
}

.closing {
  padding: 48px 34px;
  text-align: center;
  background: linear-gradient(180deg, rgba(111, 55, 39, 0.97), rgba(65, 29, 20, 0.99));
}

.closing .section-kicker,
.closing h2,
.closing p {
  color: #f6ede4;
}

.closing p {
  max-width: 780px;
  margin: 16px auto 0;
  color: rgba(246, 237, 228, 0.86);
  font-weight: 600;
}

.hero,
.panel,
.framed,
.strategy-card,
.closing,
.narrative-band,
.render-gallery-section {
  animation: rise 0.85s ease both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1180px) {
  .index-tabs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .hero-main,
  .intro-grid,
  .analysis-row,
  .analysis-row-reverse,
  .split-feature,
  .split-reverse,
  .dual-visual,
  .concept-grid,
  .strategy-grid,
  .render-gallery {
    grid-template-columns: 1fr;
  }

  .hero-main {
    min-height: calc(80vh - 68px);
  }

  .meta-row,
  .hero-links {
    grid-template-columns: repeat(2, max-content);
  }

  .visual-stack {
    grid-template-rows: auto;
  }

  .analysis-row-dark {
    padding: 22px;
  }

  .render-gallery .gallery-large,
  .render-gallery .gallery-tall {
    min-height: 420px;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100vw - 18px, 1280px);
    padding-top: 10px;
  }

  .index-tabs {
    top: 8px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    margin-bottom: 10px;
    padding: 8px;
    border-radius: 18px;
  }

  .index-tabs a {
    min-height: 38px;
    padding: 8px;
    font-size: 12px;
  }

  .hero {
    min-height: auto;
    border-radius: 24px;
  }

  .hero-content {
    position: relative;
    padding: 22px 18px 28px;
  }

  .hero-main {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(42px, 15vw, 68px);
  }

  .hero-topbar {
    grid-template-columns: 1fr;
  }

  .meta-row,
  .hero-links {
    grid-template-columns: 1fr;
  }

  .panel,
  .framed,
  .strategy-card,
  .closing,
  .render-gallery-section,
  .band-copy {
    padding: 24px 20px;
    border-radius: 22px;
  }

  .analysis-card,
  .render-gallery .gallery-large,
  .render-gallery .gallery-tall,
  .render-gallery .gallery-wide,
  .render-gallery .framed:not(.gallery-large):not(.gallery-tall) {
    min-height: 240px;
  }

  .band-figure {
    margin: 0 20px 20px;
  }

  .hero-koi {
    width: 82vw;
    opacity: 0.64;
  }

  .fact-list li {
    flex-direction: column;
  }

  .fact-list strong {
    max-width: none;
    text-align: left;
  }
}