:root {
  --ink: #121a33; --ink-2: #2b3556; --muted: #66708a; --line: #e4e7ef; --bg: #f6f5f1; --card: #ffffff;
  --surface-2: #fbfbf8; --mint: #37d6a3; --mint-deep: #0f9d72; --mint-soft: #e3f8f0; --amber: #f2a93b; --amber-soft: #fdf1dc;
  --rose: #e5566d; --rose-soft: #fde8eb; --sky: #4d7cfe; --sky-soft: #e8eeff; --violet: #8a63f5; --violet-soft: #efe9ff;
  --on-ink: #fff; --code-bg: #0f1630; --code-ink: #dfe6ff;
  --radius: 14px; --shadow: 0 1px 2px rgba(18, 26, 51, 0.06), 0 8px 24px rgba(18, 26, 51, 0.06);
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #e8ecf8; --ink-2: #b9c1d9; --muted: #8790aa; --line: #262d45; --bg: #0b1020; --card: #121933; --surface-2: #0f1630;
    --mint-deep: #37d6a3; --mint-soft: rgba(55,214,163,.14); --amber-soft: rgba(242,169,59,.16); --rose-soft: rgba(229,86,109,.16);
    --sky-soft: rgba(77,124,254,.18); --violet-soft: rgba(138,99,245,.18); --on-ink: #0b1020; --code-bg: #070b18;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 10px 30px rgba(0,0,0,.35); color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --ink: #e8ecf8; --ink-2: #b9c1d9; --muted: #8790aa; --line: #262d45; --bg: #0b1020; --card: #121933; --surface-2: #0f1630;
  --mint-deep: #37d6a3; --mint-soft: rgba(55,214,163,.14); --amber-soft: rgba(242,169,59,.16); --rose-soft: rgba(229,86,109,.16);
  --sky-soft: rgba(77,124,254,.18); --violet-soft: rgba(138,99,245,.18); --on-ink: #0b1020; --code-bg: #070b18;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 10px 30px rgba(0,0,0,.35); color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif; color: var(--ink); background: var(--bg); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
body::before { content: ""; position: fixed; inset: -20vh -10vw auto; height: 60vh; z-index: -1; pointer-events: none;
  background: radial-gradient(40% 60% at 20% 30%, rgba(55,214,163,.12), transparent 70%), radial-gradient(35% 50% at 80% 10%, rgba(77,124,254,.10), transparent 70%); }
a { color: var(--sky); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
code { font-family: var(--mono); font-size: .86em; background: var(--surface-2); border: 1px solid var(--line); padding: 1px 6px; border-radius: 6px; }
pre { background: var(--code-bg); color: var(--code-ink); padding: 14px 16px; border-radius: 12px; overflow-x: auto; font-size: 13.5px; line-height: 1.55; }
pre code { background: none; border: 0; padding: 0; color: inherit; font-size: inherit; }

.top { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 22px; padding: 12px max(16px, calc((100vw - 1120px) / 2));
  background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--ink); letter-spacing: -.02em; }
.brand:hover { text-decoration: none; }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a { color: var(--ink-2); font-weight: 500; font-size: 14px; padding: 6px 10px; border-radius: 8px; }
.nav a:hover { text-decoration: none; background: var(--card); }
.nav a.on { background: var(--card); color: var(--ink); box-shadow: var(--shadow); }
.spacer { flex: 1; }
.icon-btn { border: 1px solid var(--line); background: var(--card); color: var(--ink); width: 34px; height: 34px; border-radius: 10px; cursor: pointer; font-size: 15px; display: grid; place-items: center; }
.gh { font-size: 14px; font-weight: 600; color: var(--ink); border: 1px solid var(--line); background: var(--card); padding: 6px 12px; border-radius: 10px; }

main { max-width: 1120px; margin: 0 auto; padding: 36px 16px 80px; }
.doc { max-width: 820px; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: 11.5px; font-weight: 700; color: var(--muted); }
h1 { font-size: clamp(30px, 4.5vw, 44px); line-height: 1.1; letter-spacing: -.025em; margin: 8px 0 14px; }
h1.display { font-family: "Instrument Serif", Georgia, serif; font-weight: 400; font-size: clamp(44px, 7vw, 76px); line-height: 1; }
h1 em { font-style: italic; background: linear-gradient(90deg, var(--mint-deep), var(--sky)); -webkit-background-clip: text; background-clip: text; color: transparent; }
h2 { font-size: 26px; letter-spacing: -.02em; margin: 52px 0 12px; scroll-margin-top: 80px; }
h3 { font-size: 18px; margin: 28px 0 8px; scroll-margin-top: 80px; }
.lede { font-size: 19px; color: var(--ink-2); max-width: 700px; }
.muted { color: var(--muted); }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 18px; border-radius: 11px; font-weight: 600; font-size: 15px; border: 1px solid transparent; }
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn.primary { background: var(--ink); color: var(--on-ink); }
.btn.mint { background: var(--mint); color: #0b1020; box-shadow: 0 6px 20px rgba(55,214,163,.35); }
.btn.ghost { border-color: var(--line); color: var(--ink); background: var(--card); }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.grid { display: grid; gap: 16px; }
.g3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.g2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.feature { padding: 20px; }
.feature .ico { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; font-size: 19px; margin-bottom: 10px; }
.feature h3 { margin: 0 0 6px; font-size: 16.5px; }
.feature p { margin: 0; color: var(--ink-2); font-size: 14.5px; }
.shot { padding: 10px; }
.shot img { border-radius: 9px; border: 1px solid var(--line); }
.shot figcaption { padding: 10px 6px 4px; font-size: 14px; color: var(--ink-2); }
.shot figcaption b { color: var(--ink); }
figure { margin: 0; }

.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 18px; position: relative; }
.flow .step { padding: 16px; text-align: center; position: relative; }
.flow .step:not(:last-child)::after { content: "→"; position: absolute; right: -8px; top: 30px; color: var(--muted); font-size: 20px; }
.flow .dot { width: 54px; height: 54px; border-radius: 50%; margin: 0 auto 8px; display: grid; place-items: center; font-size: 24px; background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow); }
.flow b { display: block; font-size: 14.5px; }
.flow small { color: var(--muted); font-family: var(--mono); font-size: 11.5px; }

table { width: 100%; border-collapse: collapse; font-size: 14.5px; margin: 12px 0; background: var(--card); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); background: var(--surface-2); }
tr:last-child td { border-bottom: 0; }
.tw { overflow-x: auto; }

.callout { padding: 14px 16px; border-radius: 12px; margin: 16px 0; font-size: 15px; border: 1px solid var(--line); background: var(--card); }
.callout.tip { background: var(--mint-soft); border-color: transparent; }
.callout.warn { background: var(--amber-soft); border-color: transparent; }
.callout.info { background: var(--sky-soft); border-color: transparent; }

ol.steps { counter-reset: s; list-style: none; padding: 0; margin: 16px 0; display: grid; gap: 14px; }
ol.steps > li { counter-increment: s; position: relative; padding: 16px 18px 16px 62px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
ol.steps > li::before { content: counter(s); position: absolute; left: 16px; top: 16px; width: 32px; height: 32px; border-radius: 9px; background: var(--ink); color: var(--on-ink); display: grid; place-items: center; font-weight: 700; font-size: 14px; }
ol.steps > li h3 { margin: 0 0 6px; }
ol.steps > li p { margin: 6px 0; }
.expect { margin-top: 8px; font-size: 14px; color: var(--ink-2); padding: 8px 12px; border-left: 3px solid var(--mint); background: var(--surface-2); border-radius: 0 8px 8px 0; }
.say { margin-top: 8px; font-size: 14px; color: var(--ink-2); font-style: italic; }

.layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 40px; align-items: start; }
.toc { position: sticky; top: 80px; font-size: 14px; }
.toc a { display: block; color: var(--ink-2); padding: 4px 0; }
.toc .eyebrow { margin-bottom: 8px; }
.pill { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line); color: var(--ink-2); }
.m-get { background: var(--sky-soft); color: var(--sky); border: 0; }
.m-post { background: var(--mint-soft); color: var(--mint-deep); border: 0; }
footer { text-align: center; color: var(--muted); font-size: 13.5px; padding: 30px 16px 50px; border-top: 1px solid var(--line); }

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .toc { position: static; display: none; }
  .flow { grid-template-columns: 1fr 1fr; }
  .flow .step::after { display: none; }
  .nav a { padding: 6px 7px; }
  .gh { display: none; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }