:root { --bg: #ffffff; --panel: #f8fafc; --panel-2: #f1f5f9; --text: #0f172a; --muted: #64748b; --border: #e2e8f0; --brand: #2563eb; --brand-2: #4f46e5; --accent: #0ea5e9; --code: #0b1220; --code-text: #dbeafe; --success: #059669; --warning: #b45309; --shadow: 0 18px 50px rgba(15, 23, 42, 0.08); --radius: 16px; --topbar: 64px; --sidebar: 272px; --toc: 220px; } [data-theme="dark"] { --bg: #0a0f1c; --panel: #0f172a; --panel-2: #111c31; --text: #e5edf8; --muted: #93a4bb; --border: #21304a; --brand: #60a5fa; --brand-2: #818cf8; --accent: #38bdf8; --code: #050914; --code-text: #dbeafe; --shadow: 0 24px 70px rgba(0, 0, 0, 0.28); } * { box-sizing: border-box; } /* Bilingual content: both languages live in the DOM, only the active one renders. The active language is set by `data-lang` on (see docs.js). */ html[data-lang="zh"] [data-lang-block="en"], html[data-lang="en"] [data-lang-block="zh"] { display: none; } html { scroll-behavior: smooth; /* Keep fragment navigation clear of the fixed topbar (64px + a 20px gap). */ scroll-padding-top: calc(var(--topbar) + 20px); } body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.7 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; } a { color: inherit; text-decoration: none; } button { font: inherit; } .topbar { height: var(--topbar); position: fixed; inset: 0 0 auto 0; z-index: 30; display: flex; align-items: center; gap: 24px; padding: 0 24px; border-bottom: 1px solid var(--border); background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(16px); } .brand { display: flex; align-items: center; gap: 10px; font-weight: 780; font-size: 16px; letter-spacing: -0.02em; min-width: 248px; } .logo { width: 31px; height: 31px; border-radius: 9px; display: grid; place-items: center; color: white; background: linear-gradient(135deg, var(--brand), var(--brand-2)); box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25); } .brand small { font-weight: 650; color: var(--muted); font-size: 11px; padding: 2px 7px; border: 1px solid var(--border); border-radius: 999px; } .top-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; } .icon-btn { height: 36px; width: 36px; border: 1px solid var(--border); background: var(--bg); color: var(--text); border-radius: 9px; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; padding: 0; } .lang-switch { display: flex; gap: 4px; padding: 3px; border: 1px solid var(--border); border-radius: 9px; background: var(--panel); } .lang-switch button { height: 28px; min-width: 36px; border: 0; border-radius: 6px; background: transparent; color: var(--muted); cursor: pointer; font-weight: 650; } .lang-switch button.active { background: var(--bg); color: var(--text); box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06); } .layout { display: grid; grid-template-columns: var(--sidebar) minmax(0, 1fr) var(--toc); gap: 0; padding-top: var(--topbar); } aside.sidebar { position: fixed; top: var(--topbar); bottom: 0; left: 0; width: var(--sidebar); overflow: auto; border-right: 1px solid var(--border); padding: 24px 18px 40px; background: var(--bg); } .sidebar .group { margin-bottom: 24px; } .group-title { font-size: 11px; font-weight: 800; color: var(--muted); text-transform: uppercase; letter-spacing: 0.12em; padding: 0 10px 7px; } .nav-link { display: flex; align-items: center; gap: 10px; padding: 7px 10px; border-radius: 8px; color: var(--muted); font-weight: 540; } .nav-link:hover { background: var(--panel); color: var(--text); } .nav-link.active { background: color-mix(in srgb, var(--brand) 11%, transparent); color: var(--brand); font-weight: 700; } .badge { margin-left: auto; font-size: 10px; padding: 1px 6px; border-radius: 999px; border: 1px solid var(--border); } main { grid-column: 2; width: min(920px, calc(100vw - var(--sidebar) - var(--toc))); padding: 62px 56px 100px; margin: 0 auto; } .eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 5px 9px; border: 1px solid var(--border); border-radius: 999px; color: var(--brand); background: color-mix(in srgb, var(--brand) 7%, transparent); font-size: 12px; font-weight: 700; } .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--success); } h1 { font-size: 48px; line-height: 1.04; letter-spacing: -0.045em; margin: 18px 0 16px; max-width: 760px; } h2 { font-size: 28px; line-height: 1.25; letter-spacing: -0.025em; margin: 68px 0 16px; } h3 { font-size: 18px; letter-spacing: -0.01em; margin: 30px 0 10px; } p { color: var(--muted); font-size: 15px; } main ul, main ol { margin: 14px 0; padding-left: 22px; color: var(--muted); font-size: 14px; line-height: 1.7; } main ul { list-style: disc; } main ol { list-style: decimal; } main li { margin: 5px 0; } main li::marker { color: var(--brand); } main li > ul, main li > ol { margin: 5px 0; } .qr-code { display: block; margin: 14px 0; border: 1px solid var(--border); border-radius: 12px; background: var(--panel); } .lead { font-size: 18px; line-height: 1.7; max-width: 760px; } .lead b { color: var(--text); } .hero-actions { display: flex; gap: 10px; margin: 26px 0 22px; flex-wrap: wrap; } .btn { height: 42px; padding: 0 15px; border-radius: 10px; border: 1px solid var(--border); font-weight: 700; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--bg); } .btn.primary { border-color: transparent; color: #fff; background: linear-gradient(135deg, #2563eb, #4f46e5); box-shadow: 0 8px 24px rgba(37, 99, 235, 0.24); } .hero-meta { display: flex; gap: 18px; flex-wrap: wrap; color: var(--muted); font-size: 12px; } .hero-meta span { display: flex; align-items: center; gap: 6px; } .code-card { position: relative; margin-top: 34px; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); } .code-card.plain { margin-top: 16px; box-shadow: none; } .code-head { height: 46px; background: var(--panel); display: flex; align-items: center; border-bottom: 1px solid var(--border); padding: 0 12px; } .tabs { display: flex; gap: 4px; } .tab { padding: 6px 10px; border: 0; background: transparent; color: var(--muted); border-radius: 7px; cursor: pointer; font-weight: 650; } .tab.active { background: var(--bg); color: var(--text); box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06); } .copy { margin-left: auto; border: 0; background: transparent; color: var(--muted); cursor: pointer; } /* Per-block copy button, injected by docs.js onto every .code-card that has no header of its own; it sits over the dark 
, hence its own colours. */
.code-copy {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 1;
  padding: 4px 9px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 7px;
  background: rgba(2, 6, 23, 0.78);
  color: #94a3b8;
  font-size: 11px;
  font-weight: 650;
  line-height: 1.5;
  cursor: pointer;
  transition:
    color 0.15s ease,
    border-color 0.15s ease;
}
.code-copy:hover {
  color: var(--code-text);
  border-color: rgba(148, 163, 184, 0.55);
}
pre {
  margin: 0;
  padding: 20px 22px;
  background: var(--code);
  color: var(--code-text);
  overflow: auto;
  font:
    13px/1.75 "SFMono-Regular",
    Consolas,
    monospace;
}
.tok-k {
  color: #c4b5fd;
}
.tok-s {
  color: #86efac;
}
.tok-f {
  color: #7dd3fc;
}
.tok-c {
  color: #64748b;
}
.tok-n {
  color: #fdba74;
}
.tok-t {
  color: #f9a8d4;
}
.tok-a {
  color: #a5b4fc;
}
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  margin: 34px 0 0;
}
.stat {
  padding: 18px;
  border-right: 1px solid var(--border);
  background: var(--panel);
}
.stat:last-child {
  border-right: 0;
}
.stat strong {
  display: block;
  font-size: 18px;
  color: var(--text);
  margin-bottom: 2px;
}
.stat span {
  color: var(--muted);
  font-size: 12px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.card {
  border: 1px solid var(--border);
  border-radius: 13px;
  padding: 18px;
  background: var(--bg);
  transition:
    0.16s transform,
    0.16s border-color,
    0.16s box-shadow;
}
.card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--brand) 45%, var(--border));
  box-shadow: var(--shadow);
}
.card-icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: color-mix(in srgb, var(--brand) 10%, transparent);
  color: var(--brand);
  display: grid;
  place-items: center;
  font-weight: 800;
  margin-bottom: 12px;
}
.card h3 {
  margin: 0 0 5px;
  font-size: 15px;
}
.card p {
  margin: 0;
  font-size: 13px;
}
.callout {
  display: flex;
  gap: 12px;
  border: 1px solid color-mix(in srgb, var(--brand) 25%, var(--border));
  border-radius: 12px;
  background: color-mix(in srgb, var(--brand) 6%, transparent);
  padding: 14px 16px;
  margin: 20px 0;
  color: var(--muted);
}
.callout b {
  color: var(--text);
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  display: table;
}
th,
td {
  text-align: left;
  padding: 11px 13px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
th {
  background: var(--panel);
  color: var(--muted);
  font-weight: 700;
}
main :not(pre) > code,
.inline-code {
  font-family: "SFMono-Regular", Consolas, monospace;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 5px;
  color: var(--text);
}
.api-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.api-row h3 {
  margin: 0 0 6px;
}
.api-row p {
  margin: 0;
}
.pill {
  white-space: nowrap;
  font: 11px/1.6 monospace;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 9px;
  color: var(--brand);
}
aside.toc {
  position: fixed;
  right: 0;
  top: var(--topbar);
  bottom: 0;
  width: var(--toc);
  padding: 44px 22px;
  border-left: 1px solid transparent;
  overflow-y: auto;
}
.toc-title {
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 12px;
}
.toc a {
  display: block;
  color: var(--muted);
  font-size: 12px;
  padding: 4px 0 4px 10px;
  border-left: 1px solid var(--border);
}
.toc a:hover {
  color: var(--text);
  border-color: var(--brand);
}
.footer {
  margin-top: 70px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 12px;
}
.mobile-menu {
  display: none;
}
@media (max-width: 1100px) {
  :root {
    --toc: 0px;
  }
  aside.toc {
    display: none;
  }
  main {
    width: calc(100vw - var(--sidebar));
    padding-right: 40px;
    padding-left: 40px;
  }
}
@media (max-width: 760px) {
  .topbar {
    padding: 0 14px;
  }
  .brand {
    min-width: auto;
  }
  .brand small {
    display: none;
  }
  .mobile-menu {
    display: inline-flex;
  }
  aside.sidebar {
    width: min(86vw, 320px);
    visibility: hidden;
    transform: translateX(-100%);
    transition:
      transform 0.18s ease,
      visibility 0.18s;
    box-shadow: var(--shadow);
  }
  body.nav-open aside.sidebar {
    visibility: visible;
    transform: translateX(0);
  }
  .layout {
    display: block;
  }
  main {
    width: 100%;
    padding: 38px 20px 80px;
  }
  h1 {
    font-size: 38px;
  }
  .stats {
    grid-template-columns: 1fr 1fr;
  }
  .stat:nth-child(2) {
    border-right: 0;
  }
  .stat:nth-child(-n + 2) {
    border-bottom: 1px solid var(--border);
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
}