:root {
  --bg: #fafaf7;
  --surface: #ffffff;
  --text: #1c1d21;
  --muted: #5d6270;
  --border: #e3e3dc;
  --accent: #3b5bdb;
  --accent-soft: #e8edff;
  --code-bg: #14161c;
  --code-text: #e6e8ee;
  --tip: #e9f7ef;
  --tip-border: #2f9e5f;
  --warn: #fff4e0;
  --warn-border: #d9822b;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111318; --surface: #1a1d24; --text: #eceef3; --muted: #9aa1b2; --border: #2b2f3a;
    --accent: #8ea2ff; --accent-soft: #232a4a; --code-bg: #0b0d11;
    --tip: #14291f; --tip-border: #3fb97a; --warn: #302210; --warn-border: #e39a4a;
  }
}
:root[data-theme="dark"] {
  --bg: #111318; --surface: #1a1d24; --text: #eceef3; --muted: #9aa1b2; --border: #2b2f3a;
  --accent: #8ea2ff; --accent-soft: #232a4a; --code-bg: #0b0d11;
  --tip: #14291f; --tip-border: #3fb97a; --warn: #302210; --warn-border: #e39a4a;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.7 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; background: var(--accent-soft); padding: .1em .4em; border-radius: 4px; }

.topbar {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 16px;
  padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; text-decoration: none; color: var(--text); }
.brand span { color: var(--accent); }
.nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.nav a { padding: 6px 10px; border-radius: 6px; text-decoration: none; color: var(--muted); font-size: .92rem; }
.nav a:hover { background: var(--accent-soft); color: var(--accent); }
.menu-btn, .theme-btn {
  background: none; border: 1px solid var(--border); color: var(--text); border-radius: 6px;
  width: 36px; height: 36px; cursor: pointer; font-size: 1.1rem;
}
.menu-btn { display: none; margin-left: auto; }

main { max-width: 820px; margin: 0 auto; padding: 0 16px 48px; }
section { padding: 40px 0 8px; border-top: 1px solid var(--border); }
.hero { border-top: 0; padding-top: 48px; }
.eyebrow { color: var(--accent); font-weight: 600; text-transform: uppercase; letter-spacing: .08em; font-size: .8rem; margin: 0 0 8px; }
h1 { font-size: clamp(1.9rem, 5vw, 2.8rem); line-height: 1.2; margin: 0 0 16px; }
h2 { font-size: 1.6rem; margin: 0 0 12px; display: flex; align-items: center; gap: 10px; }
h3 { font-size: 1.1rem; margin: 24px 0 8px; }
.num { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: #fff; font-size: .95rem; flex: none; }
.lead { font-size: 1.1rem; color: var(--muted); }
.muted { color: var(--muted); font-size: .92rem; }
.note { font-size: .92rem; color: var(--muted); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0; }
.chip { padding: 8px 14px; border: 1px solid var(--border); background: var(--surface); border-radius: 999px; text-decoration: none; color: var(--text); font-size: .95rem; }
.chip:hover { border-color: var(--accent); color: var(--accent); }

.steps { padding-left: 0; counter-reset: s; list-style: none; }
.steps > li { counter-increment: s; position: relative; padding: 0 0 14px 40px; }
.steps > li::before {
  content: counter(s); position: absolute; left: 0; top: 2px; width: 28px; height: 28px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent); font-weight: 700; display: grid; place-items: center; font-size: .85rem;
}

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 16px 0; }
.cards.two { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; }
.card h3 { margin-top: 0; }
.card p, .card ul { margin: 0 0 8px; }
.card ul { padding-left: 20px; }

.callout { border-left: 4px solid; border-radius: 6px; padding: 12px 16px; margin: 20px 0; }
.callout.tip { background: var(--tip); border-color: var(--tip-border); }
.callout.warn { background: var(--warn); border-color: var(--warn-border); }

.box { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; margin: 16px 0; }
.box summary { cursor: pointer; font-weight: 600; }

pre { margin: 0; padding: 14px 16px; background: var(--code-bg); color: var(--code-text); overflow-x: auto; white-space: pre-wrap; word-break: break-word; font: .88rem/1.6 ui-monospace, SFMono-Regular, Menlo, monospace; border-radius: 8px; }
pre code { background: none; padding: 0; color: inherit; }
.prompt { margin: 16px 0; border-radius: 10px; overflow: hidden; border: 1px solid var(--border); }
.prompt pre { border-radius: 0; }
.prompt-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 8px 12px; background: var(--surface); font-size: .85rem; color: var(--muted); }
.copy { border: 1px solid var(--border); background: var(--bg); color: var(--text); border-radius: 6px; padding: 4px 12px; cursor: pointer; font: inherit; }
.copy:hover { border-color: var(--accent); color: var(--accent); }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; background: var(--surface); }
th, td { text-align: left; padding: 10px 12px; border: 1px solid var(--border); vertical-align: top; }
th { background: var(--accent-soft); }

footer { border-top: 1px solid var(--border); padding: 24px 16px; text-align: center; color: var(--muted); font-size: .88rem; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

@media (max-width: 820px) {
  .menu-btn { display: block; }
  .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; background: var(--surface); border-bottom: 1px solid var(--border); padding: 8px 16px; margin: 0; }
  .nav.open { display: flex; }
}

.shot { margin: 16px 0; }
.shot img { width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--border); display: block; }
.shot figcaption { color: var(--muted); font-size: .88rem; margin-top: 6px; }
.legend { padding-left: 22px; }
.legend li { margin-bottom: 8px; }

main.wide { max-width: 1040px; }
.lib-bar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
#search { flex: 1 1 260px; padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text); font: inherit; }
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.tab { border: 1px solid var(--border); background: var(--surface); color: var(--text); border-radius: 999px; padding: 6px 14px; cursor: pointer; font: inherit; font-size: .92rem; }
.tab:hover { border-color: var(--accent); }
.tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.pgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }
.pcard { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; display: flex; flex-direction: column; gap: 8px; }
.pcard[hidden] { display: none; }
.pcard.featured { grid-column: 1 / -1; border-color: var(--accent); background: var(--accent-soft); }
.pcard h3 { margin: 0; font-size: 1.05rem; }
.pcard-top { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.pnum { display: inline-grid; place-items: center; min-width: 26px; height: 26px; border-radius: 50%; background: var(--accent); color: #fff; font-size: .8rem; font-weight: 700; }
.ptag { font-size: .78rem; color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 1px 10px; }
.ptag.hot { color: #fff; background: var(--tip-border); border-color: var(--tip-border); }
.pdesc { margin: 0; }
.pfile { margin: 0; font-size: .88rem; color: var(--muted); }
.pdetails summary { cursor: pointer; color: var(--accent); font-size: .92rem; }
.pdetails pre { margin-top: 8px; max-height: 340px; overflow: auto; }
.copy.big { margin-top: auto; padding: 8px 14px; background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.copy.big:hover { color: #fff; opacity: .9; }
.nav a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); }
.nav .nav-cta{background:var(--accent);color:#fff}.nav .nav-cta:hover{background:var(--accent);color:#fff;opacity:.9}
.copy.big, .copy.big:hover, .tab.active, .pnum, .num, .nav .nav-cta, .nav .nav-cta:hover { color: var(--bg); }
.ptag.hot { color: var(--bg); }
.more-btn { display: block; margin: 20px auto 0; padding: 10px 22px; border: 1px solid var(--accent); background: var(--surface); color: var(--accent); border-radius: 8px; cursor: pointer; font: inherit; font-weight: 600; }
.more-btn:hover { background: var(--accent-soft); }
.more-btn[hidden] { display: none; }
.tool-list { display: grid; gap: 10px; margin: 16px 0; }
.tool-list > div { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; }
.tool-list code { font-weight: 600; }