:root {
  --bg: #ffffff;
  --bg-soft: #f6f7fb;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #5b6475;
  --line: #e3e7ef;
  --accent: #2563eb;
  --accent-2: #7c3aed;
  --accent-text: #1d4ed8;
  --code-bg: #0f172a;
  --code-text: #e2e8f0;
  --ok: #16a34a;
  --radius: 14px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1020;
    --bg-soft: #11172a;
    --card: #141b30;
    --text: #e6e9f2;
    --muted: #9aa3b8;
    --line: #232c45;
    --accent: #60a5fa;
    --accent-2: #a78bfa;
    --accent-text: #93c5fd;
    --code-bg: #060a16;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 var(--font); }
a { color: var(--accent-text); text-underline-offset: 2px; }
img { max-width: 100%; }
code, pre, kbd { font-family: var(--mono); font-size: .9em; }
:not(pre) > code { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 6px; padding: .05em .35em; overflow-wrap: anywhere; }
pre { background: var(--code-bg); color: var(--code-text); padding: 16px 18px; border-radius: 12px; overflow-x: auto; line-height: 1.55; }
pre code { font-size: .86rem; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.015em; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); margin: 0 0 .4em; }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin: 2.2em 0 .6em; }
h3 { font-size: 1.15rem; margin: 1.6em 0 .4em; }
.muted { color: var(--muted); }
small { color: var(--muted); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 780px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--card); padding: 8px 12px; border-radius: 8px; z-index: 10; }
.skip:focus { left: 8px; }

/* header */
.top { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; gap: 20px; min-height: 60px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 700; font-size: 1.1rem; color: var(--text); text-decoration: none; }
.nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 8px; font-size: .95rem; }
.nav a:hover { color: var(--text); background: var(--bg-soft); }
.nav a[aria-current="page"] { color: var(--text); background: var(--bg-soft); font-weight: 600; }
.lang { font-size: .9rem; color: var(--muted); text-decoration: none; border: 1px solid var(--line); padding: 5px 10px; border-radius: 999px; }
.lang:hover { color: var(--text); }
@media (max-width: 640px) {
  .bar { gap: 8px; padding: 8px 16px; }
  .nav { order: 3; flex-basis: 100%; overflow-x: auto; flex-wrap: nowrap; }
  .lang { margin-left: auto; }
}

/* hero */
.hero { padding: 72px 0 40px; text-align: center; background: radial-gradient(60% 60% at 50% 0%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%); }
.hero img.mark { width: 96px; height: 96px; filter: drop-shadow(0 12px 28px color-mix(in srgb, var(--accent-2) 35%, transparent)); }
.hero .lead { font-size: clamp(1.05rem, 2.2vw, 1.3rem); color: var(--muted); max-width: 720px; margin: 0 auto 28px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 20px; border-radius: 10px; font-weight: 600; text-decoration: none; border: 1px solid var(--line); color: var(--text); background: var(--card); }
.btn.primary { border: 0; color: #fff; background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
.btn:hover { filter: brightness(1.06); }
.badge { display: inline-block; font-size: .8rem; font-weight: 600; color: var(--accent-text); background: color-mix(in srgb, var(--accent) 12%, transparent); padding: 3px 10px; border-radius: 999px; margin-bottom: 16px; }

/* sections */
section { padding: 8px 0 24px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.card h3 { margin: 0 0 6px; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }
.card .ico { font-size: 1.4rem; display: block; margin-bottom: 8px; }
.split { display: grid; gap: 24px; grid-template-columns: 1fr 1fr; align-items: center; }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; } }
.band { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 8px 0 40px; margin-top: 40px; }

/* doc pages */
.doc { padding: 40px 0 64px; }
.doc h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
.doc li { margin: .3em 0; }
.doc .updated { color: var(--muted); margin-top: -.4em; }
.note { border-left: 4px solid var(--accent); background: var(--bg-soft); padding: 12px 16px; border-radius: 0 10px 10px 0; margin: 1.2em 0; }
.note.warn { border-color: #d97706; }
details { border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; margin: 10px 0; background: var(--card); }
details summary { cursor: pointer; font-weight: 600; }
details[open] summary { margin-bottom: 6px; }

/* tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--bg-soft); font-size: .85rem; color: var(--muted); font-weight: 600; }
tr:last-child td { border-bottom: 0; }
.num { text-align: right; white-space: nowrap; }
a.dl code { background: none; border: 0; padding: 0; }

/* changelog */
.release { border-left: 2px solid var(--line); padding: 0 0 8px 20px; margin-left: 6px; position: relative; }
.release::before { content: ""; position: absolute; left: -7px; top: .55em; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); }
.release h2 { margin-top: 1.4em; font-size: 1.35rem; }
.release .date { color: var(--muted); font-size: .9rem; font-weight: 400; margin-left: 8px; }

/* footer */
.foot { border-top: 1px solid var(--line); padding: 28px 0 40px; margin-top: 40px; }
.foot-grid { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: flex-start; }
.foot p { margin: 8px 0 0; font-size: .88rem; }
.foot-links { display: flex; gap: 18px; flex-wrap: wrap; font-size: .92rem; }
.foot-links a { color: var(--muted); text-decoration: none; }
.foot-links a:hover { color: var(--text); text-decoration: underline; }

/* grid and flex children may shrink below their content (long code, pre) */
.split > *, .grid > *, .foot-grid > * { min-width: 0; }
body { overflow-x: hidden; }