:root {
  --bg: #0b0f10; --surface: #121819; --ink: #eef3f1; --muted: #9aa8a6; --line: rgba(255,255,255,.09);
  --accent: #4fd8c9; --accent-ink: #04211e; --warm: #f2c27a;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #f6f4ef; --surface: #ffffff; --ink: #14191a; --muted: #5d6a68; --line: rgba(0,0,0,.09);
          --accent: #0e8f83; --accent-ink: #ffffff; --warm: #9a5b12; color-scheme: light; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); line-height: 1.55;
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
a { color: var(--accent); }
.top, main, footer { max-width: 1040px; margin: 0 auto; padding-left: max(20px, env(safe-area-inset-left)); padding-right: max(20px, env(safe-area-inset-right)); }
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 22px; padding-bottom: 10px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.mark { width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center; font-weight: 900; font-size: 19px;
  background: var(--accent); color: var(--accent-ink); }
.word { font-weight: 800; letter-spacing: .04em; font-size: 18px; }
.word b { font-weight: 500; letter-spacing: .01em; }
nav { display: flex; gap: 18px; font-size: 15px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--ink); }
.hero { padding: 64px 0 40px; max-width: 760px; }
.eyebrow { color: var(--warm); font-weight: 700; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; margin: 0 0 14px; }
h1 { font-size: clamp(36px, 7vw, 64px); line-height: 1.04; letter-spacing: -.02em; margin: 0 0 20px; }
h1 em { font-style: normal; color: var(--accent); }
.lede { font-size: clamp(17px, 2.2vw, 20px); color: var(--muted); margin: 0 0 18px; }
.acro { display: flex; gap: 14px; flex-wrap: wrap; font-size: 17px; margin: 0 0 28px; }
.acro span { padding: 4px 12px; border: 1px solid var(--line); border-radius: 999px; }
.acro b { color: var(--accent); }
.cta { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; margin: 0; }
.btn { background: var(--accent); color: var(--accent-ink); text-decoration: none; font-weight: 800; padding: 13px 22px; border-radius: 12px; }
.link { text-decoration: none; font-weight: 600; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; padding: 24px 0 40px; }
.grid article { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 20px; }
.grid h2 { font-size: 18px; margin: 0 0 8px; }
.grid p { margin: 0; color: var(--muted); font-size: 15.5px; }
.private { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 28px; margin: 10px 0 48px; }
.private h2 { font-size: clamp(22px, 3.4vw, 30px); margin: 0 0 14px; }
.private ul { margin: 0 0 14px; padding-left: 20px; }
.private li { margin: 8px 0; }
.muted { color: var(--muted); }
footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding-top: 22px; padding-bottom: calc(28px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer p { margin: 0; }
.doc { max-width: 760px; padding: 40px 0 56px; }
.doc h1 { font-size: clamp(30px, 5vw, 44px); }
.doc h2 { font-size: 20px; margin: 28px 0 8px; }
.doc p, .doc li { color: var(--ink); }
.doc .updated { color: var(--muted); font-size: 14px; }