/* ==========================================================
   ICI Quantum — 静态官网样式
   零外部依赖：系统字体 + 原生 CSS + 内联 SVG，适合国内直接部署
   ========================================================== */

:root {
  --bg: #060910;
  --bg-soft: #0a101c;
  --bg-card: #0e1626;
  --panel: rgba(255, 255, 255, 0.035);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #e9eef8;
  --text-soft: #b3bfd3;
  --muted: #8492aa;
  --cyan: #5ad8ff;
  --violet: #9a86ff;
  --amber: #ffb86b;
  --radius: 16px;
  --container: 1160px;
  --header-h: 72px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img, svg, canvas { display: block; max-width: 100%; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: rgba(90, 216, 255, 0.3); color: #fff; }

.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--cyan);
  color: #04121c;
  border-radius: 8px;
}
.skip-link:focus { left: 16px; }

.text-gradient {
  background: linear-gradient(100deg, #cfe9ff 0%, var(--cyan) 38%, var(--violet) 88%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------------- Header ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(6, 9, 16, 0.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--cyan);
  filter: drop-shadow(0 0 10px rgba(90, 216, 255, 0.45));
}
.brand-mark svg { width: 100%; height: 100%; }
.brand-text {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
}
.brand-text-muted { font-weight: 400; color: var(--text-soft); margin-left: 6px; letter-spacing: 0.02em; }

.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav > a:not(.nav-cta) {
  font-size: 14px;
  color: var(--text-soft);
  position: relative;
  transition: color 0.2s ease;
}
.site-nav > a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 1px;
  background: var(--cyan);
  transition: width 0.25s ease;
}
.site-nav > a:hover, .site-nav > a.is-active { color: #fff; }
.site-nav > a:hover::after, .site-nav > a.is-active::after { width: 100%; }

.nav-cta {
  font-size: 14px;
  padding: 9px 18px;
  border: 1px solid rgba(90, 216, 255, 0.35);
  border-radius: 999px;
  color: var(--cyan);
  background: rgba(90, 216, 255, 0.07);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.nav-cta:hover { background: rgba(90, 216, 255, 0.16); border-color: var(--cyan); transform: translateY(-1px); }
.nav-cta span { font-size: 12px; }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  padding: 11px 9px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
}
.nav-toggle span {
  display: block; height: 1.5px; width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 96px 0 88px;
  border-bottom: 1px solid var(--line);
}
.hero-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 75% 65% at 50% 40%, #000 15%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 40%, #000 15%, transparent 100%);
  pointer-events: none;
}
.hero-glow {
  position: absolute;
  width: 780px; height: 620px;
  right: -180px; top: -180px;
  background: radial-gradient(circle, rgba(90, 216, 255, 0.13) 0%, rgba(154, 134, 255, 0.09) 42%, transparent 72%);
  filter: blur(20px);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--cyan);
  border: 1px solid rgba(90, 216, 255, 0.22);
  background: rgba(90, 216, 255, 0.055);
  border-radius: 999px;
  padding: 7px 15px;
  margin-bottom: 28px;
}
.eyebrow-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

h1 {
  font-size: clamp(38px, 4.6vw, 62px);
  line-height: 1.28;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.hero-lead {
  margin-top: 26px;
  max-width: 520px;
  font-size: 16px;
  line-height: 1.95;
  color: var(--text-soft);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.25s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn-primary {
  color: #04121c;
  background: linear-gradient(100deg, var(--cyan), #8fc9ff);
  box-shadow: 0 8px 30px rgba(90, 216, 255, 0.22);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 36px rgba(90, 216, 255, 0.34); }
.btn-ghost { color: var(--text); border: 1px solid var(--line-strong); background: rgba(255, 255, 255, 0.03); }
.btn-ghost:hover { transform: translateY(-2px); border-color: rgba(90, 216, 255, 0.55); background: rgba(90, 216, 255, 0.06); }

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 42px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.hero-tags li {
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 9px;
}
.hero-tags li::before {
  content: ""; width: 4px; height: 4px; border-radius: 50%;
  background: var(--violet);
}

/* Hero visual */
.hero-visual { min-width: 0; }
.visual-frame {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(160deg, rgba(16, 26, 44, 0.92), rgba(7, 11, 20, 0.95));
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  overflow: hidden;
}
.visual-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(90, 216, 255, 0.09), transparent 65%);
  pointer-events: none;
}
.visual-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.visual-status { display: inline-flex; align-items: center; gap: 7px; }
.visual-status i {
  width: 6px; height: 6px; border-radius: 50%;
  background: #69e0a8;
  box-shadow: 0 0 8px #69e0a8;
  animation: pulse 2s ease-in-out infinite;
}
#atomCanvas { width: 100%; height: auto; aspect-ratio: 1 / 0.92; }
.visual-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding: 14px 20px 18px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--muted);
}
.visual-legend span { display: inline-flex; align-items: center; gap: 7px; }
.legend-dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.legend-base { background: var(--cyan); box-shadow: 0 0 8px rgba(90, 216, 255, 0.8); }
.legend-excited { background: var(--amber); box-shadow: 0 0 8px rgba(255, 184, 107, 0.8); }
.legend-wave { background: transparent; border: 1px solid var(--violet); }
.visual-note { margin-top: 14px; text-align: center; font-size: 11.5px; color: #66738a; }

/* ---------------- Feature strip ---------------- */
.feature-strip {
  background: linear-gradient(90deg, rgba(90, 216, 255, 0.045), rgba(154, 134, 255, 0.045));
  border-bottom: 1px solid var(--line);
}
.strip-inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.strip-item {
  padding: 34px 26px;
  border-right: 1px solid var(--line);
}
.strip-item:first-child { border-left: 1px solid var(--line); }
.strip-num { font-size: 11px; letter-spacing: 0.2em; color: var(--cyan); }
.strip-item h2 { font-size: 16px; font-weight: 600; margin: 10px 0 6px; }
.strip-item p { font-size: 12.5px; line-height: 1.7; color: var(--muted); }

/* ---------------- Sections ---------------- */
.section { padding: 104px 0; }
.section-alt { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.section-head { max-width: 680px; margin-bottom: 54px; }
.section-kicker {
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--cyan);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-kicker::after { content: ""; width: 42px; height: 1px; background: linear-gradient(90deg, var(--cyan), transparent); }
.section-head h2, .about-copy h2, .contact-head h2 {
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.4;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.section-desc { margin-top: 18px; font-size: 15px; line-height: 1.9; color: var(--text-soft); }
.section-note { margin-top: 30px; font-size: 12.5px; color: #6e7c93; }

/* Process */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.process-step {
  position: relative;
  padding: 28px 24px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.012));
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}
.process-step:hover { transform: translateY(-5px); border-color: rgba(90, 216, 255, 0.4); }
.process-step:not(:last-child)::after {
  content: "→";
  position: absolute;
  right: -14px; top: 46px;
  z-index: 2;
  font-size: 15px;
  color: var(--cyan);
  opacity: 0.65;
}
.step-num { font-size: 12px; font-weight: 600; letter-spacing: 0.14em; color: var(--cyan); }
.step-icon {
  width: 52px; height: 52px;
  margin: 20px 0 18px;
  padding: 10px;
  color: var(--cyan);
  border: 1px solid rgba(90, 216, 255, 0.22);
  border-radius: 12px;
  background: rgba(90, 216, 255, 0.06);
}
.process-step h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.process-step p { font-size: 13px; line-height: 1.85; color: var(--text-soft); }

/* Cards */
.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.card {
  position: relative;
  padding: 30px 26px 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-card);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.card::before {
  content: "";
  position: absolute;
  width: 200px; height: 200px;
  right: -110px; top: -110px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(154, 134, 255, 0.18), transparent 70%);
  opacity: 0;
  transition: opacity 0.35s ease;
}
.card:hover { transform: translateY(-5px); border-color: rgba(154, 134, 255, 0.42); box-shadow: 0 20px 44px rgba(0, 0, 0, 0.3); }
.card:hover::before { opacity: 1; }
.card-index { font-size: 11px; letter-spacing: 0.16em; color: var(--violet); }
.card h3 { font-size: 19px; margin: 22px 0 12px; font-weight: 600; }
.card p { font-size: 13.5px; line-height: 1.9; color: var(--text-soft); }
.card-line {
  position: absolute;
  left: 26px; bottom: 20px;
  width: 30px; height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  border-radius: 2px;
  transition: width 0.35s ease;
}
.card:hover .card-line { width: 62px; }

/* Applications */
.app-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.app-card {
  position: relative;
  display: grid;
  grid-template-columns: 64px 1fr;
  column-gap: 8px;
  padding: 30px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.01));
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.app-card:hover { transform: translateY(-4px); border-color: rgba(90, 216, 255, 0.38); }
.app-badge {
  grid-row: span 2;
  font-size: 26px;
  font-weight: 300;
  color: rgba(90, 216, 255, 0.45);
  letter-spacing: 0.02em;
  padding-top: 2px;
}
.app-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.app-card p { font-size: 13.5px; line-height: 1.85; color: var(--text-soft); }

/* About */
.about-inner { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 76px; align-items: start; }
.about-copy p:not(.section-kicker) { margin-top: 22px; font-size: 15px; line-height: 2; color: var(--text-soft); max-width: 590px; }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 32px;
  font-size: 14px;
  color: var(--cyan);
  border-bottom: 1px solid rgba(90, 216, 255, 0.35);
  padding-bottom: 5px;
  transition: gap 0.2s ease, border-color 0.2s ease;
}
.text-link:hover { gap: 16px; border-color: var(--cyan); }

.about-aside {
  padding: 34px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(90, 216, 255, 0.06), rgba(154, 134, 255, 0.03));
}
.about-aside h3 { font-size: 15px; font-weight: 600; letter-spacing: 0.04em; margin-bottom: 22px; }
.focus-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 13.5px;
  color: var(--text-soft);
}
.focus-list li:last-child { border-bottom: 0; }
.focus-list li span {
  width: 6px; height: 6px; flex: 0 0 6px;
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
}
.aside-note { margin-top: 18px; font-size: 11.5px; color: #6e7c93; }

/* Contact */
.contact-section {
  position: relative;
  background:
    radial-gradient(ellipse 60% 80% at 85% 20%, rgba(154, 134, 255, 0.12), transparent 70%),
    radial-gradient(ellipse 50% 70% at 10% 100%, rgba(90, 216, 255, 0.09), transparent 70%),
    var(--bg);
}
.contact-inner { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 60px; align-items: center; }
.contact-head p:not(.section-kicker) { margin-top: 20px; font-size: 15px; color: var(--text-soft); line-height: 1.9; }
.contact-grid { display: grid; gap: 14px; }
.contact-card {
  position: relative;
  display: grid;
  gap: 4px;
  padding: 22px 28px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.035);
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}
a.contact-card:hover { transform: translateX(5px); border-color: rgba(90, 216, 255, 0.5); background: rgba(90, 216, 255, 0.07); }
.contact-label { font-size: 11.5px; letter-spacing: 0.14em; color: var(--cyan); }
.contact-card strong { font-size: 18px; font-weight: 600; letter-spacing: 0.01em; }
.contact-hint { font-size: 12.5px; color: var(--muted); }
.contact-arrow { position: absolute; right: 26px; top: 50%; transform: translateY(-50%); color: var(--cyan); font-size: 18px; }
.contact-card-plain { background: rgba(255, 255, 255, 0.02); }
.contact-card-address strong { font-size: 15px; font-weight: 500; line-height: 1.75; }

/* ---------------- Footer ---------------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: #05070d;
  padding: 56px 0 26px;
}
.footer-main { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; padding-bottom: 36px; }
.footer-brand-name { font-size: 19px; font-weight: 700; letter-spacing: 0.06em; }
.footer-brand-name span { font-weight: 400; color: var(--text-soft); margin-left: 5px; }
.footer-brand p { margin-top: 12px; font-size: 13px; color: var(--muted); max-width: 380px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; }
.footer-links a { font-size: 13px; color: var(--text-soft); transition: color 0.2s ease; }
.footer-links a:hover { color: var(--cyan); }

.footer-compliance {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--muted);
}
.footer-compliance a { color: var(--text-soft); transition: color 0.2s ease; }
.footer-compliance a:hover { color: var(--cyan); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: #66738a;
}

/* ---------------- Reveal animation ---------------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
.card-grid .reveal:nth-child(2), .process .reveal:nth-child(2), .app-grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.card-grid .reveal:nth-child(3), .process .reveal:nth-child(3), .app-grid .reveal:nth-child(3) { transition-delay: 0.16s; }
.card-grid .reveal:nth-child(4), .process .reveal:nth-child(4), .app-grid .reveal:nth-child(4) { transition-delay: 0.24s; }
.strip-inner .reveal:nth-child(2) { transition-delay: 0.08s; }
.strip-inner .reveal:nth-child(3) { transition-delay: 0.16s; }
.strip-inner .reveal:nth-child(4) { transition-delay: 0.24s; }

/* ---------------- Responsive ---------------- */
@media (max-width: 1080px) {
  .hero-inner { gap: 40px; }
  .site-nav { gap: 20px; }
  .about-inner { gap: 44px; }
  .contact-inner { gap: 40px; }
}

@media (max-width: 900px) {
  :root { --header-h: 64px; }
  .container { width: min(100% - 36px, var(--container)); }
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    top: var(--header-h); left: 0; right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 18px 20px;
    background: rgba(8, 12, 21, 0.98);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 40px rgba(0, 0, 0, 0.5);
  }
  .site-nav.is-open { display: flex; }
  .site-nav > a:not(.nav-cta) { padding: 13px 4px; border-bottom: 1px solid var(--line); font-size: 15px; }
  .site-nav > a:not(.nav-cta)::after { display: none; }
  .nav-cta { margin-top: 16px; text-align: center; justify-content: center; }
  .hero { padding: 64px 0 70px; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { max-width: 560px; margin-inline: auto; width: 100%; }
  .strip-inner { grid-template-columns: repeat(2, 1fr); }
  .strip-item:nth-child(3) { border-left: 1px solid var(--line); }
  .strip-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .process, .card-grid { grid-template-columns: repeat(2, 1fr); }
  .process-step:nth-child(2)::after { display: none; }
  .about-inner, .contact-inner { grid-template-columns: 1fr; gap: 40px; }
  .section { padding: 76px 0; }
}

@media (max-width: 600px) {
  h1 { font-size: clamp(34px, 9vw, 44px); }
  .hero-lead { font-size: 15px; }
  .hero-actions .btn { flex: 1 1 auto; justify-content: center; }
  .strip-inner { grid-template-columns: 1fr; }
  .strip-item { border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 24px 20px; }
  .strip-item:last-child { border-bottom: 0; }
  .process, .card-grid, .app-grid { grid-template-columns: 1fr; }
  .process-step::after { display: none !important; }
  .process-step:not(:last-child)::after {
    content: "↓"; display: block; position: static; text-align: center; margin-top: 12px;
  }
  .app-card { grid-template-columns: 48px 1fr; padding: 24px 22px; }
  .app-badge { font-size: 22px; }
  .section-head { margin-bottom: 38px; }
  .footer-main { flex-direction: column; gap: 26px; }
  .footer-compliance { flex-direction: column; align-items: flex-start; gap: 8px; }
  .visual-legend { gap: 10px 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}