/* Same tokens as the app (DESIGN.md): neutral grays, one azure, system sans, a dotted wall. */
:root {
  --bg: #f5f5f5; --fg: #1e1e1e; --muted: #666666; --card: #ffffff; --border: #e1e1e1; --secondary: #ebebeb;
  --brand: #0d6fd6; --brand-fg: #ffffff; --wall: #e6e6e6; --dot: #cdcdcd; --shadow: 0 12px 40px rgb(0 0 0 / .12);
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #1e1e1e; --fg: #f2f2f2; --muted: #a6a6a6; --card: #2c2c2c; --border: #424242; --secondary: #383838;
    --brand: #4da3ff; --brand-fg: #0a1a2e; --wall: #181818; --dot: #2d2d2d; --shadow: 0 12px 40px rgb(0 0 0 / .5); }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.55 var(--font); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 4px; }
::selection { background: color-mix(in srgb, var(--brand) 30%, transparent); }
code { font: .875em var(--mono); background: var(--secondary); padding: 1px 5px; border-radius: 4px; }
.wrap { width: min(1120px, 100% - 48px); margin-inline: auto; }

.ground { background: var(--wall) radial-gradient(var(--dot) 1px, transparent 1px) 0 0 / 24px 24px; padding-bottom: 72px; }
.bar { display: flex; align-items: center; gap: 24px; padding-block: 16px; }
.mark { font-weight: 650; font-size: 15px; text-decoration: none; letter-spacing: -.01em; }
.bar nav { display: flex; gap: 20px; margin-right: auto; margin-left: 8px; font-size: 14px; }
.bar nav a { color: var(--muted); text-decoration: none; }
.bar nav a:hover { color: var(--fg); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 8px; font: 500 14px/1 var(--font); text-decoration: none; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--brand); color: var(--brand-fg); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-outline { background: var(--card); color: var(--fg); border-color: var(--border); }
.btn-outline:hover { background: var(--secondary); }
.btn-sm { height: 32px; padding: 0 12px; }
.btn-lg { height: 44px; padding: 0 20px; font-size: 15px; }

.hero { padding-top: 64px; }
h1 { font-size: clamp(2.25rem, 5.2vw, 3.875rem); line-height: 1.04; font-weight: 650; letter-spacing: -.035em; margin: 0; max-width: 21ch; text-wrap: balance; }
.lede { font-size: clamp(1rem, 1.5vw, 1.1875rem); line-height: 1.55; max-width: 62ch; color: var(--muted); margin: 24px 0 0; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; margin: 32px 0 0; }
.fine { margin: 14px 0 0; font-size: 13px; color: var(--muted); }

.board { margin: 56px 0 0; }
.board figcaption { font-size: 13px; color: var(--muted); margin: 0 0 8px 2px; }
.caption { font-size: 13px; color: var(--muted); margin: 12px 0 0 2px; }
.shot { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: var(--card); box-shadow: var(--shadow); line-height: 0; }
.shot img { width: 100%; height: auto; display: block; }

.section { padding-top: 88px; }
h2 { font-size: clamp(1.5rem, 2.8vw, 2.125rem); line-height: 1.15; font-weight: 650; letter-spacing: -.025em; margin: 0 0 32px; max-width: 24ch; text-wrap: balance; }
.section p { max-width: 62ch; margin: 0 0 14px; line-height: 1.6; }

.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.steps li { border-top: 1px solid var(--border); padding-top: 20px; }
.steps h3 { margin: 0 0 8px; font-size: 1.125rem; font-weight: 600; }
.steps p { margin: 0; color: var(--muted); font-size: 15px; }

.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 56px; align-items: center; }
.split p { color: var(--muted); }

.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 56px; margin: 0; }
.features > div { border-top: 1px solid var(--border); padding: 18px 0 22px; }
.features dt { font-weight: 600; margin-bottom: 4px; }
.features dd { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.55; max-width: 52ch; }

.own p { font-size: 1.125rem; max-width: 58ch; }

.code-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 16px; }
.code { border: 1px solid var(--border); border-radius: 10px; background: var(--card); overflow: hidden; min-width: 0; }
.code-head { display: flex; align-items: center; justify-content: space-between; padding: 4px 6px 4px 14px; border-bottom: 1px solid var(--border); font-size: 13px; color: var(--muted); }
.copy { font: 500 13px var(--font); color: var(--fg); background: none; border: 0; border-radius: 6px; padding: 6px 10px; cursor: pointer; }
.copy:hover { background: var(--secondary); }
pre { margin: 0; padding: 14px; overflow-x: auto; font: 13px/1.6 var(--mono); tab-size: 2; }
pre code { background: none; padding: 0; font: inherit; }
.next { margin: 28px 0 0; padding-left: 20px; display: grid; gap: 8px; max-width: 70ch; line-height: 1.55; }
.section p.more { margin-top: 20px; color: var(--muted); }

footer { margin-top: 112px; border-top: 1px solid var(--border); padding-block: 28px; font-size: 13px; color: var(--muted); }
.foot { display: flex; gap: 16px 32px; justify-content: space-between; flex-wrap: wrap; }
.links { display: flex; gap: 20px; }

@media (max-width: 860px) {
  .bar nav { display: none; }
  .bar .btn { margin-left: auto; }
  .steps, .features, .code-grid, .split { grid-template-columns: 1fr; }
  .steps { gap: 28px; }
  .split { gap: 28px; }
  .section { padding-top: 64px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }