:root {
  --bg: #fbf8f3;
  --surface: #ffffff;
  --text: #1d1b22;
  --muted: #5d5867;
  --line: #e7e1d8;
  --accent: #e2483d;
  --accent-ink: #ffffff;
  --c1: #e2483d;
  --c2: #f2a531;
  --c3: #3a9e5d;
  --c4: #2f6fd6;
  --c5: #8a4fd1;
  --radius: 14px;
  --measure: 46rem;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15131a;
    --surface: #1e1b25;
    --text: #f2eff7;
    --muted: #aaa3b6;
    --line: #2f2a38;
    --accent: #ff6a5c;
    --accent-ink: #1a0f0d;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

.wrap { max-width: var(--measure); margin: 0 auto; padding: 0 16px; }

/* header */
.top {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.top .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; min-height: 60px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--text); text-decoration: none; font-weight: 700; font-size: 18px;
}
.brand svg { width: 28px; height: 28px; flex: none; }
.top nav { display: flex; gap: 16px; flex-wrap: wrap; font-size: 15px; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--text); }

/* landing */
.hero { padding: 56px 0 40px; }
.hero h1 { font-size: clamp(36px, 7vw, 56px); line-height: 1.05; margin: 0 0 16px; letter-spacing: -0.02em; }
.hero p.lead { font-size: 20px; color: var(--muted); margin: 0 0 28px; max-width: 34rem; }
.cubes { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; max-width: 300px; margin: 0 0 32px; }
.cubes span { aspect-ratio: 1; border-radius: 10px; box-shadow: inset 0 -5px 0 rgba(0,0,0,.16); }
.cubes span:nth-child(5n+1) { background: var(--c1); }
.cubes span:nth-child(5n+2) { background: var(--c2); }
.cubes span:nth-child(5n+3) { background: var(--c3); }
.cubes span:nth-child(5n+4) { background: var(--c4); }
.cubes span:nth-child(5n+5) { background: var(--c5); }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 22px; border-radius: 999px;
  background: var(--accent); color: var(--accent-ink);
  font-weight: 650; text-decoration: none;
}
.btn.soon { background: var(--line); color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 8px 0 48px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; text-decoration: none; color: var(--text);
}
.card strong { display: block; margin-bottom: 4px; }
.card span { color: var(--muted); font-size: 15px; }
a.card:hover { border-color: var(--accent); }

/* documents */
.doc { padding-top: 40px; padding-bottom: 56px; }
.doc p { overflow-wrap: anywhere; }
.doc td:first-child { min-width: 9em; font-weight: 600; }
.doc h1 { font-size: clamp(28px, 5vw, 38px); line-height: 1.15; margin: 0 0 8px; letter-spacing: -0.01em; }
.doc .meta { color: var(--muted); font-size: 15px; margin: 0 0 32px; }
.doc h2 { font-size: 22px; margin: 36px 0 10px; line-height: 1.3; }
.doc h3 { font-size: 18px; margin: 24px 0 8px; }
.doc p, .doc li { max-width: var(--measure); }
.doc ul, .doc ol { padding-left: 1.3em; }
.doc li { margin: 4px 0; }
.doc table { width: 100%; border-collapse: collapse; margin: 12px 0 20px; font-size: 15px; display: block; overflow-x: auto; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.doc th { color: var(--muted); font-weight: 600; white-space: nowrap; }
.note {
  background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--c2);
  border-radius: 10px; padding: 14px 16px; margin: 20px 0;
}

/* footer */
footer { border-top: 1px solid var(--line); padding: 24px 0 40px; color: var(--muted); font-size: 14px; }
footer .wrap { display: grid; gap: 8px; }
footer a { color: var(--muted); }
footer nav { display: flex; gap: 16px; flex-wrap: wrap; }

@media (max-width: 560px) {
  body { font-size: 16px; }
  .top .wrap { flex-direction: column; align-items: flex-start; padding-top: 12px; padding-bottom: 12px; gap: 6px; }
  .hero { padding-top: 36px; }
  .top nav { gap: 2px 16px; }
  .cards { grid-template-columns: 1fr; }
}