* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 86% 3%, var(--primary-tint), transparent 24rem),
    var(--bg-1);
  color: var(--fg-2);
  transition: background-color var(--dur-base) var(--ease-warm), color var(--dur-base) var(--ease-warm);
}
button, a { font: inherit; }
a { color: inherit; text-decoration: none; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: max(12px, env(safe-area-inset-top)) 14px 12px;
  background: color-mix(in srgb, var(--bg-1) 94%, transparent);
  border-bottom: 1px solid var(--border-1);
  backdrop-filter: blur(10px);
}
.mini-brand { display: flex; align-items: baseline; gap: 8px; min-width: 0; }
.mini-brand span {
  font-family: var(--font-cn-display);
  font-size: 24px;
  color: var(--fg-1);
  letter-spacing: .04em;
}
.mini-brand i {
  font-family: var(--font-en-display);
  font-size: 17px;
  color: var(--fg-3);
}
.top-actions { display: flex; align-items: center; gap: 8px; }
.palette-switch {
  display: flex;
  padding: 3px;
  border: 1px solid var(--border-1);
  background: var(--bg-2);
}
.palette-btn, .menu-btn, .close-viewer {
  border: 1px solid var(--border-1);
  background: var(--bg-1);
  color: var(--fg-2);
  min-height: 34px;
  padding: 0 10px;
  border-radius: var(--r-2);
}
.palette-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 0;
  min-width: 44px;
  background: transparent;
  font-family: var(--font-en-body);
  font-size: 12px;
}
.palette-btn span { width: 12px; height: 12px; display: block; }
.palette-btn[data-set-palette="a"] span { background: var(--flame-red); }
.palette-btn[data-set-palette="b"] span { background: var(--burgundy); }
.palette-btn.active { background: var(--primary); color: var(--fg-on-red); }
.toc {
  position: fixed;
  inset: auto 12px 12px 12px;
  z-index: 30;
  display: none;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  padding: 12px;
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  box-shadow: var(--shadow-card);
}
.toc.open { display: grid; }
.toc a {
  padding: 9px 8px;
  background: var(--bg-1);
  border: 1px solid var(--border-1);
  text-align: center;
  font-size: 13px;
  line-height: 1.2;
}
main { overflow: hidden; }
.section {
  padding: 58px 16px;
  max-width: 980px;
  margin: 0 auto;
}
.hero {
  min-height: calc(100svh - 60px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  border-bottom: 1px solid var(--border-1);
}
.eyebrow, .section-head p {
  margin: 0;
  font-family: var(--font-en-body);
  font-size: 11px;
  letter-spacing: var(--tracking-en-caps);
  text-transform: uppercase;
  color: var(--fg-3);
}
.hero h1 {
  margin: 24px 0 0;
  font-family: var(--font-cn-display);
  font-size: clamp(86px, 25vw, 150px);
  line-height: .92;
  letter-spacing: .06em;
  color: var(--primary);
}
.wordmark {
  margin: 4px 0 0;
  font-family: var(--font-en-display);
  font-style: italic;
  font-size: 36px;
  color: var(--fg-1);
}
.slogan {
  margin: 34px auto 0;
  max-width: 12em;
  font-family: var(--font-cn-brush);
  font-size: clamp(26px, 8vw, 46px);
  line-height: 1.28;
  color: var(--fg-1);
}
.subline {
  margin: 16px 0 0;
  font-family: var(--font-en-body);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.hero-stamps, .tag-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 32px;
}
.hero-stamps span, .tag-list span {
  color: var(--primary);
  border: 3px double var(--primary);
  padding: 5px 12px;
  font-family: var(--font-cn-brush);
  font-size: 18px;
  background: var(--bg-1);
}
.section-head {
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-1);
}
.section-head h2 {
  margin: 8px 0 4px;
  font-family: var(--font-cn-display);
  font-size: clamp(34px, 11vw, 58px);
  line-height: 1.05;
  color: var(--fg-1);
  letter-spacing: .04em;
}
.section-head span {
  display: block;
  color: var(--fg-3);
  line-height: 1.65;
}
.subsection-head {
  margin: 24px 0 14px;
}
.subsection-head h3 {
  margin: 0 0 6px;
  font-family: var(--font-cn-display);
  font-size: 24px;
  color: var(--fg-1);
  letter-spacing: .04em;
}
.subsection-head p {
  margin: 0;
  color: var(--fg-3);
  line-height: 1.65;
}
.story-card, .plain-card, .snap-row article {
  background: var(--bg-2);
  border: 1px solid var(--border-1);
  box-shadow: var(--shadow-card);
}
.story-card, .plain-card {
  padding: 24px;
  margin-top: 14px;
}
.story-card h3, .plain-card h3 {
  margin: 0 0 12px;
  font-family: var(--font-cn-brush);
  font-size: 30px;
  color: var(--primary);
}
.story-card p, .plain-card p {
  margin: 0 0 10px;
  font-family: var(--font-cn-serif);
  font-size: 17px;
  line-height: 1.9;
  color: var(--fg-2);
}
.plain-card.accent { border-color: color-mix(in srgb, var(--primary), transparent 55%); }
.plain-card strong { color: var(--primary); }
.snap-row, .mockup-row {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 2px 2px 12px;
  margin: 18px -16px 0;
  padding-left: 16px;
}
.snap-row article {
  min-width: 78vw;
  max-width: 360px;
  scroll-snap-align: start;
  padding: 18px;
}
.snap-row b {
  display: block;
  font-family: var(--font-cn-display);
  font-size: 24px;
  color: var(--fg-1);
  margin-bottom: 8px;
}
.snap-row span { line-height: 1.7; color: var(--fg-2); }
.artifact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
figure {
  margin: 0;
  background: var(--bg-2);
  border: 1px solid var(--border-1);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
figcaption {
  padding: 10px 12px;
  border-top: 1px solid var(--border-1);
  font-size: 13px;
  color: var(--fg-3);
}
iframe {
  display: block;
  width: 100%;
  border: 0;
  background: var(--bg-1);
}
.artifact-grid iframe {
  height: 280px;
  min-height: 260px;
  transform-origin: top left;
}
.logo-grid iframe { height: 320px; min-height: 300px; }
.wide-artifact iframe { height: 320px; min-height: 300px; }
.wide-artifact.tall iframe { height: 410px; min-height: 380px; }
.logo-exploration-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 30px;
}
.logo-exploration-grid button {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: var(--bg-1);
}
.logo-exploration-grid img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: var(--bg-1);
}
.mockup-card {
  position: relative;
  display: block;
  flex: 0 0 88vw;
  max-width: 720px;
  padding: 0;
  border: 1px solid var(--border-1);
  background: var(--bg-2);
  box-shadow: var(--shadow-card);
  text-align: left;
  color: var(--fg-2);
  scroll-snap-align: start;
  overflow: hidden;
}
.mockup-card.single {
  width: 100%;
  max-width: none;
}
.mockup-card iframe {
  height: 52vw;
  max-height: 430px;
  min-height: 210px;
  pointer-events: none;
}
.mockup-card span {
  display: block;
  padding: 10px 12px;
  border-top: 1px solid var(--border-1);
  color: var(--fg-3);
  font-size: 13px;
}
.voice-rule p { font-family: var(--font-cn-body); }
.footer {
  padding: 36px 16px 48px;
  text-align: center;
  border-top: 1px solid var(--border-1);
  color: var(--fg-3);
  font-family: var(--font-en-body);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.viewer {
  width: min(100vw, 1280px);
  height: min(100svh, 820px);
  max-width: none;
  max-height: none;
  padding: 0;
  border: 0;
  background: var(--wok-black);
}
.image-viewer {
  width: min(100vw, 1024px);
  max-width: none;
  max-height: 100svh;
  padding: 0;
  border: 0;
  background: var(--bg-1);
}
.image-viewer::backdrop { background: rgba(31,27,23,.82); }
.image-viewer img {
  display: block;
  width: 100%;
  height: auto;
}
.viewer::backdrop { background: rgba(31,27,23,.82); }
.viewer iframe {
  width: 1280px;
  height: 720px;
  transform-origin: top left;
}
.close-viewer, .close-image-viewer {
  position: fixed;
  right: 12px;
  top: max(12px, env(safe-area-inset-top));
  z-index: 2;
  background: var(--bg-1);
}
@media (min-width: 720px) {
  .section { padding: 82px 32px; }
  .artifact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .logo-exploration-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .snap-row article { min-width: 300px; }
  .mockup-card { flex-basis: 48%; }
  .mockup-card.single iframe { height: 430px; }
}