T45 Website: a home in motion and every story live, chapters on the left

frontend/src/style.css

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+:root {
+  --bg: #fcfaf7;
+  --fg: #181818;
+  --muted: #6a6a6a;
+  --line: #e1dfdd;
+  --hover: #f2f0ed;
+  --accent: #3772bb;
+  --overlay: #ffffff;
+  --sans: "Geist Variable", system-ui, sans-serif;
+  --mono: "Geist Mono Variable", ui-monospace, monospace;
+  color-scheme: light;
+}
+
+:root.dark {
+  --bg: #131110;
+  --fg: #f3f1f0;
+  --muted: #94928f;
+  --line: #2c2b29;
+  --hover: #252422;
+  --accent: #69a1e8;
+  --overlay: #1c1a19;
+  color-scheme: dark;
+}
+
+* { box-sizing: border-box; }
+
+html, body { margin: 0; background: var(--bg); color: var(--fg); }
+
+body {
+  font: 400 16px/24px var(--sans);
+  -webkit-font-smoothing: antialiased;
+}
+
+a { color: inherit; text-decoration: none; }
+
+button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
+
+:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 8px; }
+
+.skip { position: absolute; left: 16px; top: -48px; padding: 8px 12px; background: var(--fg); color: var(--bg); border-radius: 8px; z-index: 30; }
+.skip:focus { top: 8px; }
+
+.icon { display: inline-flex; width: 24px; height: 24px; flex: none; }
+.icon svg { width: 24px; height: 24px; }
+
+.label { font: 500 12px/16px var(--mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
+
+/* Header */
+.bar {
+  position: sticky; top: 0; z-index: 20; height: 56px;
+  display: flex; align-items: center; gap: 24px; padding: 0 24px;
+  background: color-mix(in srgb, var(--bg) 84%, transparent);
+  backdrop-filter: blur(16px);
+  border-bottom: 1px solid var(--line);
+}
+.bar .mark { font-weight: 600; font-size: 18px; line-height: 28px; }
+.bar nav { display: flex; gap: 4px; }
+.bar .end { margin-left: auto; display: flex; align-items: center; gap: 4px; }
+.link { padding: 4px 12px; border-radius: 8px; font-size: 14px; line-height: 20px; font-weight: 500; color: var(--muted); }
+.link:hover, .link[aria-current="page"], .link[aria-expanded="true"] { color: var(--fg); background: var(--hover); }
+.tool { width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center; border-radius: 8px; color: var(--muted); }
+.tool:hover { color: var(--fg); background: var(--hover); }
+.find { display: inline-flex; align-items: center; gap: 8px; height: 32px; padding: 0 8px 0 4px; border-radius: 8px; color: var(--muted); font-size: 14px; }
+.find:hover { background: var(--hover); color: var(--fg); }
+.find kbd { font: 500 12px/16px var(--mono); padding: 0 4px; border: 1px solid var(--line); border-radius: 4px; }
+
+/* Cascading menu */
+.menu {
+  position: fixed; z-index: 25; min-width: 240px; max-height: min(480px, 70vh); overflow-y: auto;
+  padding: 4px; background: var(--overlay); border: 1px solid var(--line); border-radius: 12px;
+  box-shadow: 0 12px 32px rgb(0 0 0 / 0.12);
+}
+.menu a, .menu button { display: flex; align-items: center; justify-content: space-between; gap: 12px; width: 100%; padding: 4px 8px; min-height: 32px; border-radius: 8px; font-size: 14px; line-height: 20px; text-align: left; }
+.menu a:hover, .menu button:hover, .menu [aria-expanded="true"], .menu :focus-visible { background: var(--hover); outline: none; }
+.menu .count { color: var(--muted); font: 500 12px/16px var(--mono); }
+
+/* Components page */
+.docs { display: grid; grid-template-columns: 264px minmax(0, 1fr); min-height: calc(100vh - 56px); }
+.side { position: sticky; top: 56px; height: calc(100vh - 56px); overflow-y: auto; padding: 24px 12px 48px; border-right: 1px solid var(--line); }
+.side input { appearance: none; width: 100%; height: 32px; margin-bottom: 16px; padding: 0 12px; font: inherit; font-size: 14px; color: var(--fg); background: transparent; border: 1px solid var(--line); border-radius: 8px; }
+.side input::placeholder { color: var(--muted); }
+.side input:focus-visible { outline: 2px solid var(--accent); outline-offset: 0; }
+.side .chapter { display: flex; gap: 8px; align-items: center; width: 100%; padding: 4px 8px; min-height: 32px; border-radius: 8px; font-size: 14px; line-height: 20px; color: var(--muted); }
+.side .chapter .n { font: 500 12px/16px var(--mono); width: 20px; }
+.side .chapter:hover { background: var(--hover); color: var(--fg); }
+.side .chapter[aria-current="true"] { color: var(--fg); font-weight: 500; }
+.side ul { list-style: none; margin: 0 0 8px; padding: 0 0 0 28px; }
+.side li a { display: block; padding: 4px 8px; border-radius: 8px; font-size: 14px; line-height: 20px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.side li a:hover { background: var(--hover); color: var(--fg); }
+.side li a[aria-current="page"] { color: var(--fg); background: var(--hover); box-shadow: inset 2px 0 0 var(--accent); }
+.side .none { padding: 8px; font-size: 14px; color: var(--muted); }
+
+.detail { padding: 48px 48px 96px; max-width: 1136px; }
+.crumb { font-size: 14px; line-height: 20px; color: var(--muted); }
+.crumb a:hover { color: var(--fg); }
+.detail h1 { margin: 4px 0 12px; font-size: 18px; line-height: 28px; font-weight: 600; }
+.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
+.chips span { font: 500 12px/16px var(--mono); padding: 4px 8px; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); }
+
+.stage { position: relative; height: 640px; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--bg); }
+.stage iframe { display: block; width: 100%; height: 100%; border: 0; background: var(--bg); }
+.stage .state { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 14px; color: var(--muted); background: var(--bg); }
+.stage .state[hidden] { display: none; }
+.stage .actions { position: absolute; top: 12px; right: 12px; display: flex; gap: 4px; opacity: 0; transition: opacity 150ms ease-out; }
+.stage:hover .actions, .stage:focus-within .actions { opacity: 1; }
+.stage .actions .tool { background: var(--bg); border: 1px solid var(--line); }
+.stage.full { position: fixed; inset: 0; z-index: 40; height: auto; border-radius: 0; border: 0; }
+.spin { width: 16px; height: 16px; border: 1.5px solid var(--line); border-top-color: var(--muted); border-radius: 50%; animation: spin 800ms linear infinite; }
+@keyframes spin { to { transform: rotate(360deg); } }
+.stage-skip { position: absolute; left: -9999px; }
+.stage-skip:focus { position: static; display: inline-block; margin-bottom: 8px; font-size: 14px; color: var(--accent); }
+
+.pager { display: flex; justify-content: space-between; gap: 16px; margin-top: 24px; }
+.pager a { display: flex; flex-direction: column; gap: 4px; max-width: 48%; padding: 12px 16px; border-radius: 12px; font-size: 14px; line-height: 20px; }
+.pager a:hover { background: var(--hover); }
+.pager a.next { text-align: right; margin-left: auto; }
+.pager .label { display: flex; align-items: center; gap: 4px; }
+.pager a.next .label { justify-content: flex-end; }
+
+.index { padding: 48px; max-width: 1136px; }
+.index h1 { margin: 0 0 8px; font-size: 18px; line-height: 28px; font-weight: 600; }
+.index p { margin: 0 0 48px; color: var(--muted); max-width: 640px; }
+.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 4px 24px; }
+.grid a { display: flex; gap: 12px; align-items: baseline; padding: 12px; border-radius: 12px; }
+.grid a:hover { background: var(--hover); }
+.grid .n { font: 500 12px/16px var(--mono); color: var(--muted); width: 20px; }
+.grid strong { font-weight: 500; display: block; }
+.grid small { font-size: 14px; line-height: 20px; color: var(--muted); }
+
+/* Palette */
+.scrim { position: fixed; inset: 0; z-index: 50; background: rgb(0 0 0 / 0.24); display: flex; justify-content: center; align-items: flex-start; padding: 96px 16px 16px; }
+.palette { width: min(640px, 100%); max-height: calc(100vh - 128px); display: flex; flex-direction: column; background: var(--overlay); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 24px 64px rgb(0 0 0 / 0.2); overflow: hidden; }
+.palette input { flex: none; appearance: none; height: 56px; padding: 0 16px; font: inherit; color: var(--fg); background: transparent; border: 0; border-bottom: 1px solid var(--line); outline: none; }
+.palette ol { list-style: none; margin: 0; padding: 4px; overflow-y: auto; }
+.palette li a { display: flex; justify-content: space-between; gap: 16px; padding: 8px 12px; border-radius: 8px; font-size: 14px; line-height: 20px; }
+.palette li a span:last-child { color: var(--muted); white-space: nowrap; }
+.palette li[aria-selected="true"] a { background: var(--hover); }
+.palette .none { padding: 16px; color: var(--muted); font-size: 14px; }
+
+/* Home */
+.hero { height: 220vh; }
+.pin { position: sticky; top: 56px; height: calc(100vh - 56px); display: grid; align-content: center; padding: 48px; overflow: hidden; }
+.hero canvas { position: absolute; top: 0; right: 0; width: 62%; height: 100%; }
+.hero .words { position: relative; max-width: 440px; }
+.hero h1 { margin: 0 0 16px; font-size: 18px; line-height: 28px; font-weight: 400; }
+.hero h1 strong { display: block; font-weight: 600; }
+.hero p { margin: 0 0 24px; color: var(--muted); }
+.cta { display: flex; gap: 12px; flex-wrap: wrap; }
+.button { display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 16px; border-radius: 12px; font-size: 14px; font-weight: 500; border: 1px solid var(--line); }
+.button:hover { background: var(--hover); }
+.button.primary { background: var(--fg); color: var(--bg); border-color: var(--fg); }
+.button.primary:hover { opacity: 0.88; }
+.band { padding: 96px 48px; border-top: 1px solid var(--line); }
+.band .label { margin-bottom: 12px; }
+.band h2 { margin: 0 0 48px; font-size: 18px; line-height: 28px; font-weight: 600; max-width: 560px; }
+.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 48px; }
+.facts strong { display: block; font: 500 18px/28px var(--mono); }
+.facts span { color: var(--muted); font-size: 14px; line-height: 20px; }
+.home-stage { max-width: 1136px; }
+.foot { padding: 24px 48px; border-top: 1px solid var(--line); font-size: 12px; line-height: 16px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 8px 24px; }
+.foot a { text-decoration: underline; text-underline-offset: 2px; }
+
+@media (max-width: 767px) {
+  .bar { padding: 0 16px; gap: 12px; }
+  .bar nav .link { padding: 4px 8px; }
+  .find > span:not(.icon), .find kbd { display: none; }
+  .docs { grid-template-columns: 1fr; }
+  .side { position: static; height: auto; max-height: 40vh; border-right: 0; border-bottom: 1px solid var(--line); }
+  .detail, .index { padding: 24px 16px 64px; }
+  .stage { height: 480px; }
+  .pin, .band { padding: 48px 16px; }
+  .pin { align-content: end; }
+  .hero canvas { width: 100%; height: 55%; }
+  .foot { padding: 24px 16px; }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  * { transition: none !important; animation: none !important; }
+}