:root {
  --bg: #fafaf7;
  --surface: #ffffff;
  --ink: #16161a;
  --muted: #5d5d66;
  --line: #e6e5df;
  --accent: #c4621f;
  --accent-soft: #fbeee4;
  --term-bg: #16161a;
  --term-ink: #e9e7e1;
  --term-dim: #8b8a93;
  --term-ok: #7fc99a;
  --term-warn: #e8894a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111114;
    --surface: #18181c;
    --ink: #ecebe6;
    --muted: #a3a2ab;
    --line: #2a2a30;
    --accent: #e8894a;
    --accent-soft: #2a1e16;
    --term-bg: #0b0b0d;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
}
a { color: inherit; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.wrap { max-width: 920px; margin: 0 auto; padding: 0 20px; }

header.top { display: flex; align-items: center; justify-content: space-between; padding: 28px 0; }
.wordmark { font-weight: 700; font-size: 20px; letter-spacing: -0.02em; text-decoration: none; color: var(--ink); }
.wordmark span { color: var(--accent); }
nav a { color: var(--muted); text-decoration: none; margin-left: 22px; font-size: 15px; }
nav a:hover, nav a[aria-current="page"] { color: var(--ink); }

.hero { padding: 56px 0 40px; }
.eyebrow { display: inline-block; font-size: 13px; color: var(--accent); background: var(--accent-soft); padding: 4px 10px; border-radius: 999px; margin-bottom: 22px; }
h1 { font-size: clamp(34px, 6vw, 54px); line-height: 1.08; letter-spacing: -0.035em; margin: 0 0 20px; font-weight: 700; }
.lede { font-size: 19px; color: var(--muted); max-width: 660px; margin: 0 0 30px; }
.ctas { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { display: inline-block; padding: 12px 20px; border-radius: 10px; text-decoration: none; font-weight: 600; font-size: 15px; }
.btn-primary { background: var(--ink); color: var(--bg); }
.works { margin: 18px 0 0; font-size: 13px; color: var(--muted); }
.btn-ghost { border: 1px solid var(--line); color: var(--ink); background: var(--surface); }

.term { margin: 48px 0 8px; background: var(--term-bg); color: var(--term-ink); border-radius: 14px; padding: 22px 24px; font-size: 14px; line-height: 1.75; overflow-x: auto; box-shadow: 0 1px 0 rgba(0,0,0,.04), 0 12px 32px -12px rgba(0,0,0,.25); }
.term > div:not(.dots) { white-space: pre; }
.term .dots { display: flex; gap: 7px; margin-bottom: 14px; }
.term .dots i { width: 11px; height: 11px; border-radius: 50%; background: #3a3a42; display: block; }
.term .ok { color: var(--term-ok); }
.term .warn { color: var(--term-warn); }
.note { font-size: 14px; color: var(--muted); margin: 0 0 8px; }

section { padding: 56px 0; border-top: 1px solid var(--line); }
h2 { font-size: 28px; letter-spacing: -0.025em; margin: 0 0 10px; }
h3 { letter-spacing: -0.01em; }
.sub { color: var(--muted); margin: 0 0 32px; max-width: 660px; }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 24px; }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0 0 12px; color: var(--muted); font-size: 15.5px; }
.card p:last-child { margin-bottom: 0; }
.card ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 15px; }
.card li { margin: 4px 0; }
.tag { font-size: 12px; color: var(--accent); margin-bottom: 10px; display: block; }
.tag.next { color: var(--muted); }

.principles { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.principles li { display: grid; grid-template-columns: 28px 1fr; gap: 10px; }
.principles b { display: block; }
.principles span { color: var(--muted); font-size: 15.5px; }
.principles .n { color: var(--accent); font-size: 14px; padding-top: 2px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2px; background: var(--line); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; margin: 8px 0 48px; }
.stat { background: var(--surface); padding: 22px 22px 20px; display: flex; flex-direction: column; gap: 6px; }
.stat-value { font-size: 34px; font-weight: 600; letter-spacing: -0.03em; line-height: 1.1; color: var(--ink); }
.stat-label { font-size: 14px; color: var(--muted); }
.page-head { padding: 48px 0 24px; }
.page-head h1 { font-size: clamp(30px, 5vw, 44px); }
.prose > * { max-width: 700px; }
.prose p, .prose li { color: var(--muted); }
.prose p b, .prose li b { color: var(--ink); }
.prose h2 { margin-top: 0; }
.prose h3 { margin: 28px 0 8px; font-size: 18px; }

table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 8px 0 8px; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 13px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
td { color: var(--muted); }
td:first-child { color: var(--ink); font-weight: 600; white-space: nowrap; }
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 4px 6px; }

.flow { display: flex; align-items: stretch; gap: 8px; margin: 8px 0 12px; }
.flow .step { flex: 1 1 0; min-width: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.flow .step b { display: block; font-size: 15px; margin-bottom: 4px; }
.flow .step span { color: var(--muted); font-size: 14px; }
.flow .arrow { align-self: center; color: var(--accent); font-size: 20px; }

.doc { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 20px 22px; font-size: 14px; line-height: 1.7; white-space: pre-wrap; overflow-x: auto; color: var(--ink); }

footer { padding: 32px 0 48px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--ink); }

@media (max-width: 720px) {
  .grid, .grid3 { grid-template-columns: 1fr; }
  nav a { margin-left: 14px; }
  .hero { padding-top: 32px; }
  .term { font-size: 12.5px; padding: 18px; }
  .flow { flex-direction: column; }
  .flow .arrow { transform: rotate(90deg); text-align: center; }
}