/* =========================================================
   MDT AllImmerse · 门户网站样式
   School: Warm Humanist (Stripe Press × Monocle 融合)
   ========================================================= */

/* ---------- 1. 设计 Token ---------- */
:root {
  /* Color */
  --bg: #F4F7FA;
  --surface: #FFFFFF;
  --surface-deep: #EAF1F6;
  --ink: #0D212C;
  --ink-strong: #0E2330;
  --sub: #243F4D;
  --muted: #5F737D;
  --accent: #071A25;
  --accent-hover: #051A24;
  --deep-1: #051A24;
  --deep-2: #071A25;
  --deep-3: #081C27;
  --deep-text: #E6F3FA;
  --highlight-soft: #E4F2FA;
  --highlight-soft-2: #E6F3FA;
  --deep-glow: rgba(95, 185, 255, 0.25);
  --hairline: rgba(5, 26, 36, 0.1);
  --hairline-strong: rgba(5, 26, 36, 0.2);

  /* Fonts */
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', 'Times New Roman', serif;
  --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Menlo', 'Consolas', monospace;

  /* Spacing — 8pt grid */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 16px;
  --s-4: 24px;
  --s-5: 32px;
  --s-6: 48px;
  --s-7: 64px;
  --s-8: 96px;
  --s-9: 128px;

  /* Layout */
  --container: 1320px;
  --gutter: clamp(24px, 5vw, 64px);
  --rail: 80px;

  /* Effects */
  --shadow-soft: 0 24px 48px rgba(5, 26, 36, 0.14);
  --shadow-deep: 0 32px 80px rgba(5, 26, 36, 0.24);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --transition: 600ms var(--ease);
}

/* ---------- 2. Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  font-weight: 400;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 200ms var(--ease); }
a:hover { color: var(--accent); }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea, select { font: inherit; color: inherit; }
ul { list-style: none; padding: 0; margin: 0; }
.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; }

/* ---------- 3. Typographic Components ---------- */
.kicker {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--s-4);
}
.kicker .num {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-right: var(--s-2);
}
.kicker .sep { color: var(--muted); margin: 0 var(--s-2); }

.display {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.01em;
  font-size: clamp(36px, 5.6vw, 80px);
  color: var(--ink-strong);
  margin: 0 0 var(--s-5);
  text-wrap: pretty;
}
.display em {
  font-style: italic;
  font-weight: 700;
  color: var(--ink-strong);
}
.display .ital { font-style: italic; }
.display .accent { color: var(--accent); }

.dek {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.5;
  color: var(--sub);
  margin: 0;
  max-width: 56ch;
  text-wrap: pretty;
}

.body-text { font-size: 17px; line-height: 1.7; color: var(--sub); }
.body-text--muted { color: var(--muted); }
.mono { font-family: var(--font-mono); font-feature-settings: "tnum"; }

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: 14px 28px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  border: 1px solid transparent;
  transition: all 240ms var(--ease);
  cursor: pointer;
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.btn--primary {
  background:
    linear-gradient(135deg, rgba(230, 243, 250, 0.22), rgba(230, 243, 250, 0) 42%),
    linear-gradient(135deg, var(--deep-2), var(--deep-1));
  color: var(--deep-text);
  border-color: rgba(230, 243, 250, 0.22);
  border-radius: 999px;
  box-shadow:
    0 14px 30px rgba(5, 26, 36, 0.28),
    inset 0 1px 0 rgba(230, 243, 250, 0.24);
}
.btn--primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 0 34%, rgba(230, 243, 250, 0.28) 46%, transparent 58% 100%);
  transform: translateX(-130%);
  transition: transform 520ms var(--ease);
}
.btn--primary:hover {
  background:
    linear-gradient(135deg, rgba(230, 243, 250, 0.28), rgba(230, 243, 250, 0) 44%),
    linear-gradient(135deg, var(--deep-3), var(--deep-1));
  color: var(--deep-text);
  transform: translateY(-2px);
  box-shadow:
    0 18px 38px rgba(5, 26, 36, 0.34),
    inset 0 1px 0 rgba(230, 243, 250, 0.3);
}
.btn--primary:hover::before {
  transform: translateX(130%);
}
.btn--primary:active {
  transform: translateY(0);
  box-shadow:
    0 8px 18px rgba(5, 26, 36, 0.28),
    inset 0 1px 0 rgba(230, 243, 250, 0.22);
}
.nav-links .btn--primary::after {
  display: none;
}
.nav-links .nav-cta {
  padding: 10px 20px;
  font-size: 13px;
  box-shadow:
    0 10px 24px rgba(5, 26, 36, 0.22),
    inset 0 1px 0 rgba(230, 243, 250, 0.22);
}
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn--ghost:hover {
  background: var(--ink);
  color: var(--bg);
}
.btn--link {
  padding: 0;
  border-bottom: 1px solid currentColor;
  color: var(--ink);
}
.btn--link:hover { color: var(--accent); }

/* ---------- 5. Layout — section pattern ---------- */
.section {
  border-top: 1px solid var(--hairline);
  position: relative;
}
.section--no-border { border-top: none; }
.section-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--s-9) var(--gutter);
  display: grid;
  grid-template-columns: var(--rail) 1fr;
  column-gap: clamp(24px, 3vw, 56px);
}
.section-rail {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: 56px;
  line-height: 1;
  color: var(--accent);
  padding-top: 8px;
}
.section-rail::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: var(--hairline-strong);
  margin-top: var(--s-3);
}
.section-body { min-width: 0; }
.section-head { margin-bottom: var(--s-8); max-width: 880px; }

/* Section title color hierarchy transition */
.section-head .kicker {
  color: color-mix(in srgb, var(--accent) 80%, var(--ink-strong));
}
.section-head .kicker .num {
  color: color-mix(in srgb, var(--accent) 90%, var(--ink-strong));
}
.section-head .kicker .sep {
  color: color-mix(in srgb, var(--muted) 85%, var(--accent));
}
.section-head .display {
  color: var(--ink-strong);
}
.section-head .display em {
  color: color-mix(in srgb, var(--ink-strong) 72%, var(--accent));
}
.section-head .dek {
  color: color-mix(in srgb, var(--sub) 70%, var(--muted));
}

/* ---------- 6. Placeholder Cards ---------- */
.ph-card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sub);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 15px;
  text-align: center;
  padding: var(--s-5);
}
.ph-card small {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--hairline-strong);
  display: block;
  margin-top: var(--s-2);
}
.ph-card--4-5 { aspect-ratio: 4 / 5; }
.ph-card--3-4 { aspect-ratio: 3 / 4; }
.ph-card--16-9 { aspect-ratio: 16 / 9; }
.ph-card--1-1 { aspect-ratio: 1 / 1; }
.ph-card--4-3 { aspect-ratio: 4 / 3; }
.ph-burns {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 40%, rgba(95, 185, 255, 0.12), transparent 60%),
    radial-gradient(ellipse at 70% 70%, rgba(8, 28, 39, 0.08), transparent 60%),
    var(--surface);
  animation: kenBurns 14s ease-in-out infinite alternate;
  z-index: 0;
}
.ph-card > * { position: relative; z-index: 1; }
.ph-card > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  z-index: 2;
}
@keyframes kenBurns {
  0% { transform: scale(1) translate(0, 0); }
  100% { transform: scale(1.05) translate(-1%, -1%); }
}

/* ---------- 7. Nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(244, 247, 250, 0.92);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 300ms var(--ease);
}
.nav.is-scrolled { border-bottom-color: var(--hairline); }
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-5);
}
.brand {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: var(--s-2);
}
.brand-logo {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  object-fit: contain;
}
.brand em { font-style: italic; color: var(--accent); font-weight: 700; }
.brand .sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
  font-weight: 400;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-5);
  font-size: 14px;
  font-weight: 400;
}
.nav-links a {
  position: relative;
  padding: 4px 0;
  color: var(--ink);
}
.nav-links a.btn--primary {
  color: var(--deep-text);
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -2px;
  height: 1px;
  background: var(--accent);
  transition: right 280ms var(--ease);
}
.nav-links a:hover::after, .nav-links a.is-active::after { right: 0; }
.nav-links a.is-active { color: var(--accent); }
.nav-cta { margin-left: var(--s-3); }
.nav-links a.nav-cta,
.nav-links a.nav-cta:hover,
.nav-links a.nav-cta:focus-visible,
.nav-links a.nav-cta.is-active {
  color: var(--deep-text);
}
.nav-links a.nav-cta:focus-visible {
  outline: 2px solid rgba(230, 243, 250, 0.72);
  outline-offset: 3px;
}
.nav-toggle {
  display: none;
  width: 32px;
  height: 32px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--ink);
  transition: transform 240ms var(--ease), opacity 240ms var(--ease);
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 8. Hero ---------- */
.hero {
  position: relative;
  padding: clamp(120px, 16vh, 180px) 0 var(--s-9);
  min-height: 100vh;
  display: flex;
  align-items: center;
  border-top: none;
}
.hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
  width: 100%;
}
.hero-display {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.015em;
  font-size: clamp(44px, 7vw, 104px);
  color: var(--ink-strong);
  margin: 0 0 var(--s-5);
  text-wrap: balance;
}
.hero-display .big {
  font-style: italic;
  font-weight: 700;
  color: var(--ink);
  display: inline-block;
  margin-right: 0.1em;
}
.hero-display .big sup {
  font-size: 0.42em;
  vertical-align: super;
  font-style: normal;
  font-weight: 700;
  margin-left: 0.05em;
}
.hero-dek {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(18px, 1.7vw, 24px);
  line-height: 1.5;
  color: var(--sub);
  max-width: 44ch;
  margin: 0 0 var(--s-6);
  text-wrap: pretty;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4);
  align-items: center;
}
.hero-figure {
  margin: 0;
  position: relative;
  padding: 0;
  border-radius: 16px;
  overflow: hidden;
  background:
    radial-gradient(circle at 86% 14%, var(--deep-glow), transparent 48%),
    linear-gradient(145deg, var(--deep-2), var(--deep-1));
  border: 1px solid rgba(230, 243, 250, 0.2);
  box-shadow: var(--shadow-deep);
}
.hero-figure::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(160deg, rgba(230, 243, 250, 0.18), transparent 46%);
  pointer-events: none;
}
.hero-product-img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: inherit;
  display: block;
  position: relative;
  z-index: 1;
}
.hero-meta {
  display: flex;
  justify-content: space-between;
  margin-top: var(--s-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(230, 243, 250, 0.78);
  text-transform: uppercase;
  position: relative;
  z-index: 1;
}
.hero-scroll {
  position: absolute;
  bottom: var(--s-6);
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--muted);
  animation: pulseDown 2.4s ease-in-out infinite;
}
@keyframes pulseDown {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.6; }
  50% { transform: translateX(-50%) translateY(4px); opacity: 1; }
}

/* ---------- 9. Manifesto (Pull-quote) ---------- */
.manifesto .section-inner { padding-top: var(--s-8); padding-bottom: var(--s-8); }
.manifesto .kicker {
  color: color-mix(in srgb, var(--accent) 84%, var(--ink-strong));
}
.manifesto .kicker .num {
  color: color-mix(in srgb, var(--accent) 92%, var(--ink-strong));
}
.manifesto-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(28px, 4vw, 56px);
  line-height: 1.25;
  color: color-mix(in srgb, var(--ink-strong) 88%, var(--accent));
  margin: 0 0 var(--s-5);
  max-width: 22ch;
  text-wrap: balance;
}
.manifesto-quote em {
  color: color-mix(in srgb, var(--accent) 56%, var(--ink-strong));
}
.manifesto-quote::before {
  content: '"';
  display: block;
  font-size: 1.4em;
  line-height: 0.8;
  color: var(--accent);
  margin-bottom: var(--s-2);
}
.manifesto-sub {
  font-family: var(--font-sans);
  font-size: 15px;
  color: color-mix(in srgb, var(--sub) 58%, var(--muted));
  letter-spacing: 0.04em;
  margin: 0;
  padding-left: var(--s-4);
  border-left: 2px solid color-mix(in srgb, var(--accent) 72%, var(--muted));
}

/* ---------- 10. Advantages — 8 pillars ---------- */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}
.advantage-cell {
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: var(--s-6) var(--s-5);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  position: relative;
  background: var(--bg);
  transition: background 280ms var(--ease);
}
.advantage-cell:hover { background: var(--surface); }
.advantage-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
}
.advantage-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.25;
  margin: 0;
}
.advantage-desc {
  font-size: 14px;
  line-height: 1.6;
  color: color-mix(in srgb, var(--ink-strong) 78%, var(--sub));
  font-weight: 500;
  margin: 0;
}

/* ---------- 11. Scenarios — three acts ---------- */
.scene {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-7);
  align-items: center;
  padding: var(--s-7) 0;
  border-top: 1px solid var(--hairline);
}
.scene:first-of-type { border-top: none; padding-top: 0; }
.scene:nth-of-type(even) .scene-text { order: 2; }
.scene-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: var(--s-3);
}
.scene-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.15;
  margin: 0 0 var(--s-3);
}
.scene-dek {
  font-family: var(--font-serif);
  font-style: italic;
  color: color-mix(in srgb, var(--ink-strong) 72%, var(--sub));
  font-size: 18px;
  margin: 0 0 var(--s-5);
}
.scene-bullets {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  border-top: 1px solid var(--hairline);
  padding-top: var(--s-4);
}
.scene-bullets li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: var(--s-3);
  font-size: 15px;
  color: var(--ink-strong);
  font-weight: 500;
}
.scene-bullets li::before {
  content: counter(scene-bullet, decimal-leading-zero);
  counter-increment: scene-bullet;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.08em;
  padding-top: 4px;
}
.scene-bullets { counter-reset: scene-bullet; }

/* ---------- 12. Studio software ---------- */
.studio-intro {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: var(--s-7);
  margin-bottom: var(--s-8);
  align-items: end;
}
.studio-intro p { font-size: 17px; color: var(--ink); margin: 0; line-height: 1.7; }

.studio-pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  margin-bottom: var(--s-7);
}
.studio-pillar {
  background: var(--bg);
  padding: var(--s-5);
  text-align: center;
  transition: background 280ms var(--ease);
}
.studio-pillar:hover { background: var(--surface); }
.studio-pillar h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  margin: 0 0 var(--s-2);
  color: var(--ink);
}
.studio-pillar p {
  font-size: 13px;
  color: color-mix(in srgb, var(--ink-strong) 70%, var(--sub));
  font-weight: 500;
  margin: 0;
  line-height: 1.55;
}

.studio-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}
.studio-feature {
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: var(--s-5);
  background: var(--bg);
  transition: background 280ms var(--ease);
}
.studio-feature:hover { background: var(--surface); }
.studio-feature .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: var(--s-3);
  display: block;
}
.studio-feature h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.3;
  margin: 0 0 var(--s-2);
  color: var(--ink);
}
.studio-feature p {
  font-size: 13px;
  color: color-mix(in srgb, var(--ink-strong) 72%, var(--sub));
  font-weight: 500;
  margin: 0;
  line-height: 1.6;
}
.studio-feature .formats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-top: var(--s-3);
}
.studio-feature .formats span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  padding: 5px 9px;
  border: 1px solid color-mix(in srgb, var(--format-color), var(--bg) 46%);
  background: color-mix(in srgb, var(--format-color), var(--bg) 86%);
  color: var(--format-color);
  box-shadow: 0 8px 18px color-mix(in srgb, var(--format-color), transparent 88%);
}
.studio-feature .formats .format-pdf {
  --format-color: var(--accent);
}
.studio-feature .formats .format-word {
  --format-color: #32597A;
}
.studio-feature .formats .format-ppt {
  --format-color: #4B708C;
}

.studio-models {
  margin-top: var(--s-8);
  padding-top: var(--s-7);
  border-top: 1px solid var(--hairline);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-7);
}
.studio-models h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  margin: 0 0 var(--s-3);
}
.studio-models .lead {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: var(--s-3);
}
.studio-models ul { display: flex; flex-direction: column; gap: var(--s-2); margin-top: var(--s-3); }
.studio-models ul li {
  display: flex;
  align-items: baseline;
  gap: var(--s-3);
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.35;
  padding: var(--s-2) 0;
  border-bottom: 1px dashed var(--hairline);
}
.studio-models ul li span:first-child {
  flex: 0 0 auto;
  font-size: 0.88em;
  letter-spacing: 0.08em;
  color: var(--accent);
}
.studio-models ul li span:last-child {
  font-weight: 600;
  letter-spacing: 0.01em;
}
.studio-models ul li::before {
  content: '◇';
  color: var(--accent);
  font-size: 12px;
}

/* ---------- 13. AIGC ---------- */
.aigc-triad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-5);
}
.aigc-card {
  display: flex;
  flex-direction: column;
}
.aigc-card .ph-card { margin-bottom: var(--s-4); }
.aigc-card .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.16em;
  margin-bottom: var(--s-2);
}
.aigc-card .label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--muted);
  margin-bottom: var(--s-2);
}
.aigc-card h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 26px;
  line-height: 1.2;
  margin: 0 0 var(--s-3);
}
.aigc-card p {
  font-size: 14px;
  color: var(--sub);
  margin: 0;
  line-height: 1.65;
}
.aigc-footer {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s-4);
  margin-top: var(--s-8);
  padding-top: var(--s-6);
  border-top: 1px solid var(--hairline);
}
.aigc-footer div {
  font-size: 13px;
  color: var(--sub);
  line-height: 1.55;
}
.aigc-footer div strong {
  display: block;
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--ink);
  font-size: 15px;
  margin-bottom: var(--s-1);
}
.aigc-disclaimer {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--sub);
  font-family: var(--font-mono);
  margin-top: var(--s-5);
  padding-top: var(--s-4);
  border-top: 1px dashed var(--hairline);
}

/* ---------- 14. Comparison Table ---------- */
.compare-lead {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.25;
  margin: 0 0 var(--s-7);
  max-width: 20ch;
  text-wrap: balance;
}
.compare-lead em { color: var(--accent); font-style: italic; font-weight: 700; }

.compare-table {
  display: grid;
  grid-template-columns: 140px 1fr 1fr;
  border-top: 1px solid var(--hairline-strong);
}
.compare-row {
  display: contents;
}
.compare-cell {
  padding: var(--s-4) var(--s-3);
  border-bottom: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
  gap: var(--s-1);
}
.compare-head .compare-cell {
  padding: var(--s-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-strong);
  border-bottom: 1px solid var(--hairline-strong);
  font-weight: 700;
}
.compare-head .compare-cell strong {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: normal;
  text-transform: none;
  color: var(--ink);
  margin-top: var(--s-1);
}
.compare-head .compare-cell.is-hero strong { color: var(--accent); }
.compare-dim {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-strong);
  text-transform: uppercase;
  font-weight: 700;
}
.compare-val {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.1;
  color: var(--ink);
}
.compare-mdt .compare-val { color: var(--accent); }
.compare-sub {
  font-size: 12px;
  color: color-mix(in srgb, var(--ink-strong) 68%, var(--sub));
  margin: 0;
  line-height: 1.5;
  font-weight: 500;
}

/* ---------- 15. Core Configuration — 4 hero tiles ---------- */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}
.specs-tile {
  padding: var(--s-7) var(--s-5);
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 280px;
  background: var(--bg);
  overflow: hidden;
}
.specs-tile .label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: var(--s-3);
  text-transform: uppercase;
}
.specs-tile .num-display {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(56px, 6vw, 88px);
  line-height: 0.95;
  color: var(--ink);
  margin: 0 0 var(--s-3);
  letter-spacing: -0.02em;
}
.specs-tile .num-display sup {
  font-size: 0.42em;
  vertical-align: super;
  font-style: normal;
  margin-left: 4px;
}
.specs-tile h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  margin: 0 0 var(--s-1);
  color: var(--ink);
}
.specs-tile p {
  font-size: 13px;
  color: var(--sub);
  margin: 0;
  line-height: 1.55;
}
.specs-tile .accent-bar {
  position: absolute;
  left: 0;
  top: 0;
  width: 24px;
  height: 1px;
  background: var(--accent);
}

/* ---------- 16. Product Params ---------- */
.params-top {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--s-7);
  margin-bottom: var(--s-7);
}
.dimension-figure {
  padding: var(--s-3);
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 5 / 3;
  position: relative;
  overflow: hidden;
}
.dimension-img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}
.dimension-box {
  width: 70%;
  aspect-ratio: 220 / 135;
  border: 1px solid var(--ink);
  position: relative;
  background: var(--bg);
}
.dim-label {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: var(--s-2);
}
.dim-label::before, .dim-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--ink);
  min-width: 16px;
}
.dim-label.dim-w { top: -28px; left: 0; right: 0; }
.dim-label.dim-h { left: -68px; top: 50%; transform: translateY(-50%); flex-direction: column; height: 100%; }
.dim-label.dim-h::before, .dim-label.dim-h::after { width: 1px; min-width: 0; min-height: 16px; flex: 1; }
.dim-label.dim-d { bottom: -28px; left: 25%; }
.dim-label.dim-d::before { display: none; }

.interfaces { display: flex; flex-direction: column; min-width: 0; }
.interfaces-head {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
  margin: 0 0 var(--s-3);
}
.interfaces-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 var(--s-5);
  counter-reset: iface;
}
.interfaces-list li {
  display: flex;
  align-items: baseline;
  gap: var(--s-3);
  padding: 10px 0;
  border-bottom: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-strong);
  font-weight: 600;
  white-space: nowrap;
  min-width: 0;
}
.interfaces-list li::before {
  content: counter(iface, decimal-leading-zero);
  counter-increment: iface;
  flex: 0 0 auto;
  min-width: 22px;
  font-size: 10px;
  color: var(--sub);
  letter-spacing: 0.1em;
}
.interfaces-list li > span:first-of-type {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}
.interfaces-list li .qty {
  flex: 0 0 auto;
  color: var(--accent);
  font-weight: 700;
}

.params-table {
  width: 100%;
  border-collapse: collapse;
}
.params-table th, .params-table td {
  text-align: left;
  padding: var(--s-3) var(--s-4) var(--s-3) 0;
  border-bottom: 1px solid var(--hairline);
  vertical-align: top;
}
.params-table th {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--ink-strong);
  text-transform: uppercase;
  font-weight: 1000;
  width: 28%;
  padding-right: var(--s-5);
}
.params-table td {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink-strong);
  line-height: 1.65;
  font-weight: 500;
}
.params-table td strong {
  font-family: var(--font-serif);
  font-weight: 700;
  font-style: italic;
  color: var(--accent);
  font-size: 16px;
  margin-right: var(--s-2);
}

/* ---------- 17. Warranty pills ---------- */
.warranty-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s-4);
}
.warranty-pill {
  padding: var(--s-5);
  border: 1px solid var(--hairline);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}
.warranty-pill .num {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 700;
  font-size: 44px;
  line-height: 1;
  color: var(--accent);
  margin-bottom: var(--s-3);
}
.warranty-pill h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  margin: 0;
}
.warranty-pill p {
  font-size: 13px;
  color: color-mix(in srgb, var(--ink-strong) 72%, var(--sub));
  font-weight: 500;
  margin: 0;
  line-height: 1.6;
}

/* ---------- 18. Company ---------- */
.company-body {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--s-7);
  margin-bottom: var(--s-8);
}
.company-body p {
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.7;
  color: var(--ink);
  margin: 0 0 var(--s-4);
}
.company-body p:first-of-type::first-letter {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 56px;
  float: left;
  line-height: 0.9;
  padding-right: 8px;
  padding-top: 6px;
  color: var(--accent);
}
.company-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-top: var(--s-3);
}
.company-tags span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 6px 12px;
  border: 1px solid var(--hairline-strong);
  color: var(--ink-strong);
  font-weight: 700;
}
.copyright-list {
  margin-top: var(--s-8);
  padding-top: var(--s-6);
  border-top: 1px solid var(--hairline);
}
.copyright-list h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  margin: 0 0 var(--s-2);
}
.copyright-list .sub-head {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--sub);
  margin: 0 0 var(--s-5);
}
.certificate-wall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-4);
}
.certificate-card {
  margin: 0;
  padding: 0;
  background: transparent;
  box-shadow: none;
  transition: transform 320ms var(--ease);
}

.certificate-card:hover {
  transform: translateY(-4px);
  box-shadow: none;
}

.certificate-card img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background: transparent;
  border: none;
}
.certificate-card figcaption {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: var(--s-3);
  align-items: baseline;
  padding-top: var(--s-3);
  font-size: 14px;
  line-height: 1.45;
}
.certificate-card .seq,
.certificate-card .ver {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  white-space: nowrap;
}
.certificate-card .seq { color: var(--accent); }
.certificate-card .title {
  color: var(--ink);
  text-wrap: pretty;
}
.certificate-card .ver { color: var(--sub); }

/* ---------- 19. Exhibitions ---------- */
.exhib-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
  background: var(--hairline);
}
.exhib-card {
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  background: var(--bg);
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 420px;
  overflow: hidden;
  transition: background 280ms var(--ease), transform 280ms var(--ease), box-shadow 280ms var(--ease);
}
.exhib-card:hover {
  background: var(--surface);
  transform: translateY(-4px);
  box-shadow: 0 18px 42px rgba(5, 26, 36, 0.1);
  z-index: 1;
}
.exhib-media {
  margin: 0;
  aspect-ratio: 16 / 10;
  background: var(--surface-deep);
  overflow: hidden;
  border-bottom: 1px solid var(--hairline);
}
.exhib-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.92) contrast(1.02);
  transition: transform 700ms var(--ease), filter 700ms var(--ease);
}
.exhib-card:hover .exhib-media img {
  transform: scale(1.045);
  filter: saturate(1.04) contrast(1.04);
}
.exhib-media--wide img {
  object-fit: contain;
  object-position: center;
  background: var(--deep-1);
}
.exhib-copy {
  min-height: 0;
  padding: var(--s-5);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}
.exhib-card .yr {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(34px, 3vw, 44px);
  line-height: 1;
  color: var(--accent);
}
.exhib-card h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.3;
  margin: 0;
  color: var(--ink);
  text-wrap: pretty;
}
.exhib-card .loc {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-strong);
  text-transform: uppercase;
  margin-top: auto;
  padding-top: var(--s-3);
  border-top: 1px dashed var(--hairline);
  font-weight: 700;
}
.exhib-card .tag {
  font-family: var(--font-serif);
  font-style: italic;
  color: color-mix(in srgb, var(--ink-strong) 70%, var(--sub));
  font-size: 14px;
  margin: 0;
  text-wrap: pretty;
  font-weight: 500;
}

/* ---------- 20. Booking ---------- */
.booking { background: var(--surface); border-top: 1px solid var(--hairline-strong); }
.booking .section-inner { padding-top: var(--s-9); padding-bottom: var(--s-9); }
.booking-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--s-8);
}
.form-card {
  background: var(--bg);
  padding: var(--s-7) var(--s-6);
  border: 1px solid var(--hairline);
}
.form-row {
  display: grid;
  gap: var(--s-3);
  margin-bottom: var(--s-5);
}
.form-row.cols-2 { grid-template-columns: 1fr 1fr; column-gap: var(--s-4); }
.field {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}
.field label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
}
.field label .req { color: var(--accent); margin-left: 4px; }
.field input,
.field textarea,
.field select {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--hairline-strong);
  padding: 10px 0;
  font-family: var(--font-sans);
  font-size: 16px;
  color: var(--ink);
  outline: none;
  transition: border-color 240ms var(--ease);
}
.field textarea {
  resize: vertical;
  min-height: 96px;
  line-height: 1.5;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  border-bottom-color: var(--accent);
}
.field .error-msg {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.08em;
  min-height: 14px;
  display: none;
}
.field.is-invalid .error-msg { display: block; }
.field.is-invalid input,
.field.is-invalid textarea,
.field.is-invalid select { border-bottom-color: var(--accent); }

.scene-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
}
.scene-tags label {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border: 1px solid var(--hairline-strong);
  font-size: 13px;
  letter-spacing: 0.04em;
  cursor: pointer;
  font-family: var(--font-sans);
  text-transform: none;
  color: var(--ink);
  transition: all 240ms var(--ease);
}
.scene-tags input { display: none; }
.scene-tags label:hover { border-color: var(--ink); }
.scene-tags input:checked + label,
.scene-tags label:has(input:checked) {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.consent {
  display: flex;
  gap: var(--s-3);
  align-items: flex-start;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: var(--s-5);
  cursor: pointer;
}
.consent input { margin-top: 4px; accent-color: var(--accent); }
.consent a { color: var(--ink); border-bottom: 1px solid var(--hairline-strong); }

.form-submit {
  width: 100%;
  padding: 18px;
  font-size: 14px;
  letter-spacing: 0.12em;
}

.form-success {
  display: none;
  text-align: center;
  padding: var(--s-7) var(--s-5);
}
.form-success .check {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 60px;
  line-height: 1;
  color: var(--accent);
  margin-bottom: var(--s-4);
}
.form-success h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 26px;
  margin: 0 0 var(--s-3);
}
.form-success p {
  font-size: 15px;
  color: var(--sub);
  margin: 0;
}
.form-card.is-submitted form { display: none; }
.form-card.is-submitted .form-success { display: block; }

.contact-aside {
  display: flex;
  flex-direction: column;
  gap: var(--s-5);
}
.contact-block {
  padding: var(--s-5) 0;
  border-bottom: 1px solid var(--hairline);
}
.contact-block:last-child { border-bottom: none; }
.contact-block .label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: var(--s-2);
}
.contact-block .value {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  color: var(--ink);
  margin: 0;
}
.contact-block .sub {
  font-size: 13px;
  color: var(--muted);
  margin-top: var(--s-1);
}
.qr-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-3);
}
.qr-grid .ph-card { font-size: 12px; }
.qr-grid .ph-label { font-size: 12px; }

/* ---------- 21. Footer ---------- */
.footer {
  background: var(--deep-1);
  color: var(--bg);
  border-top: none;
}
.footer .section-inner {
  display: block;
  padding: var(--s-7) var(--gutter);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--s-6);
  margin-bottom: var(--s-6);
}
.footer-brand .brand { color: var(--bg); }
.footer-brand .brand-logo {
  filter: drop-shadow(0 4px 10px rgba(230, 243, 250, 0.16));
}
.footer-brand .brand em { color: var(--accent); }
.footer-brand p {
  margin-top: var(--s-3);
  font-size: 13px;
  color: rgba(230, 243, 250, 0.62);
  line-height: 1.6;
  max-width: 36ch;
}
.footer h5 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--s-3);
  font-weight: 500;
}
.footer ul li {
  padding: 4px 0;
  font-size: 14px;
  color: rgba(230, 243, 250, 0.82);
}
.footer ul li a:hover { color: var(--accent); }
.footer-bottom {
  padding-top: var(--s-5);
  border-top: 1px solid rgba(230, 243, 250, 0.16);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(230, 243, 250, 0.54);
}

/* ---------- 22. Reveal Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 800ms var(--ease), transform 800ms var(--ease);
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: 80ms; }
.reveal-delay-2 { transition-delay: 160ms; }
.reveal-delay-3 { transition-delay: 240ms; }
.reveal-delay-4 { transition-delay: 320ms; }

/* ---------- 23. Responsive ---------- */
@media (max-width: 1100px) {
  .hero-inner { grid-template-columns: 1fr; gap: var(--s-7); }
  .hero-figure { max-width: 480px; margin-inline: auto; width: 100%; }
  .advantage-grid,
  .studio-features,
  .specs-grid { grid-template-columns: repeat(2, 1fr); }
  .aigc-triad { grid-template-columns: repeat(2, 1fr); }
  .exhib-grid { grid-template-columns: repeat(2, 1fr); }
  .exhib-card { min-height: 400px; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .studio-pillars { grid-template-columns: repeat(2, 1fr); }
  .warranty-grid { grid-template-columns: repeat(2, 1fr); }
  .compare-table { grid-template-columns: 100px 1fr 1fr; }
  .params-top { grid-template-columns: 1fr; gap: var(--s-7); }
  .interfaces-list { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  :root { --rail: 0px; }
  .section-inner {
    grid-template-columns: 1fr;
    padding: var(--s-7) var(--gutter);
    row-gap: var(--s-3);
  }
  .section-rail {
    font-size: 36px;
    padding-top: 0;
  }
  .section-rail::after { display: none; }
  .section-head { margin-bottom: var(--s-6); }
  .nav-links { display: none; }
  .nav.is-open .nav-links {
    display: flex;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: var(--s-5) var(--gutter);
    background: var(--bg);
    border-bottom: 1px solid var(--hairline);
    gap: var(--s-3);
    align-items: stretch;
  }
  .nav.is-open .nav-cta { margin: 0; }
  .nav-toggle { display: inline-flex; }
  .hero { padding-top: 96px; min-height: auto; }
  .advantage-grid,
  .studio-features,
  .specs-grid,
  .warranty-grid,
  .exhib-grid,
  .studio-pillars { grid-template-columns: 1fr; }
  .exhib-card { min-height: 0; }
  .exhib-media { aspect-ratio: 16 / 9; }
  .exhib-copy { padding: var(--s-5); }
  .aigc-triad,
  .aigc-footer { grid-template-columns: 1fr; }
  .scene { grid-template-columns: 1fr; gap: var(--s-4); padding: var(--s-5) 0; }
  .scene:nth-of-type(even) .scene-text { order: 0; }
  .studio-intro,
  .studio-models,
  .company-body,
  .params-top,
  .booking-grid,
  .form-row.cols-2 { grid-template-columns: 1fr; gap: var(--s-5); }
  .certificate-wall { grid-template-columns: 1fr; }
  .compare-table { grid-template-columns: 80px 1fr 1fr; font-size: 13px; }
  .compare-cell { padding: var(--s-3) var(--s-2); }
  .compare-val { font-size: 17px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--s-5); }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: var(--s-3); }
  .dimension-figure { padding: var(--s-6) var(--s-4); aspect-ratio: 4 / 3; }
  .dim-label.dim-h { left: -52px; font-size: 10px; }
  .form-card { padding: var(--s-5); }
}
@media (max-width: 520px) {
  .exhib-copy { padding: var(--s-4); }
  .exhib-card .yr { font-size: 34px; }
  .dim-label { display: none; }
  .dimension-box::after {
    content: '220 × 135 × 36 mm';
    position: absolute;
    bottom: -32px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--ink);
    white-space: nowrap;
  }
  .params-top { gap: var(--s-7); }
  .interfaces-list { grid-template-columns: 1fr; }
}

/* ---------- 24. Motion Guard ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .ph-burns { animation: none; }
  .hero-scroll { animation: none; }
}

/* ---------- 25. Print ---------- */
@media print {
  .nav, .hero-scroll, .booking, .footer { display: none; }
  .section { page-break-inside: avoid; border: none; }
  body { background: white; color: black; }
}