:root {
  --primary: #000000;
  --primary-active: #1a1a1a;
  --text-link: #0d74ce;
  --ink: #171717;
  --body: #60646c;
  --muted: #999999;
  --hairline: #f0f0f3;
  --hairline-soft: #f5f5f7;
  --hairline-strong: #dcdee0;
  --canvas: #ffffff;
  --canvas-soft: #fafafa;
  --surface-card: #ffffff;
  --surface-strong: #f0f0f3;
  --surface-dark: #171717;
  --on-primary: #ffffff;
  --on-dark: #ffffff;
  --on-dark-soft: #b0b4ba;
  --sky-light: #cfe7ff;
  --sky-mid: #a8c8e8;
  --success: #16a34a;
  --error: #ab2024;
  --warning: #ab6400;
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --side-w: 260px;
  --top-h: 64px;
  --header-h: 64px;
  --font-sans: "Inter", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, monospace;
  --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.04);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  overflow-x: clip;
}
body.nav-open { overflow: hidden; }
.skip {
  position: absolute;
  left: -999px;
  top: 8px;
}
.skip:focus {
  left: 8px;
  z-index: 1000;
  background: var(--primary);
  color: var(--on-primary);
  padding: 10px 18px;
  border-radius: var(--radius-md);
  text-decoration: none;
}
a { color: var(--text-link); }
code, pre, .mono { font-family: var(--font-mono); }
code {
  font-size: 13px;
  background: var(--surface-strong);
  color: var(--ink);
  padding: 0.12em 0.38em;
  border-radius: var(--radius-xs);
}

.top {
  position: sticky;
  top: 0;
  z-index: 40;
  min-height: var(--top-h);
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 12px;
  padding: 0 max(24px, env(safe-area-inset-right)) 0 max(24px, env(safe-area-inset-left));
  border-bottom: 1px solid var(--hairline);
  background: var(--canvas);
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1 1 auto;
  min-width: 0;
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
}
.brand .dot { flex: 0 0 auto; }
.brand-name {
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--primary);
}
.menu {
  display: none;
  flex: 0 0 auto;
  min-height: 44px;
  min-width: 44px;
  height: 44px;
  border: 1px solid var(--hairline-strong);
  background: var(--surface-card);
  color: var(--ink);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  padding: 0 12px;
  cursor: pointer;
  touch-action: manipulation;
}
.menu:hover { background: var(--canvas-soft); }
.menu:active { background: var(--surface-strong); }
.menu:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}
.langs {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 2px;
  margin-left: auto;
}
.langs a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 44px;
  padding: 0 8px;
  border-radius: var(--radius-md);
  color: var(--body);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
  touch-action: manipulation;
}
.langs a:hover { color: var(--ink); background: var(--canvas-soft); }
.langs a[aria-current="true"] {
  color: var(--ink);
  background: var(--surface-strong);
}
.status {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
}
.status[data-ok="true"] { color: var(--success); }
.status[data-ok="false"] { color: var(--error); }

.notice {
  margin: 0;
  padding: 12px max(24px, env(safe-area-inset-right)) 12px max(24px, env(safe-area-inset-left));
  background: #fff8eb;
  border-bottom: 1px solid #ead9b4;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.45;
}
.nav-overlay {
  display: none;
  appearance: none;
  border: 0;
  padding: 0;
  margin: 0;
  width: 100%;
  cursor: pointer;
}
.notice a { font-weight: 500; }

.listing {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 16px 0 28px;
  min-height: 140px;
}
.listing-status { color: var(--body); margin: 0; }
.listing-status[data-err] { color: var(--error); }
.listing-count {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}
.resource {
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  padding: 16px 20px 8px;
  background: var(--surface-card);
}
.resource h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
}
.resource .url {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  word-break: break-all;
  margin-bottom: 10px;
}
.resource-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--muted);
}
.resource table { margin: 0 0 12px; }
.resource th { width: auto; color: var(--muted); font-weight: 500; }
.resource td { color: var(--body); }
.resource .open {
  margin: 4px 0 12px;
}

.shell { display: flex; flex-wrap: wrap; min-height: calc(100dvh - var(--top-h)); }
.side {
  width: var(--side-w);
  flex: 0 0 var(--side-w);
  border-right: 1px solid var(--hairline);
  background: var(--canvas);
  padding: 24px 16px 48px;
  position: sticky;
  top: var(--top-h);
  height: calc(100dvh - var(--top-h));
  overflow: auto;
}
.nav-label {
  margin: 20px 10px 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.4;
}
.nav-label:first-child { margin-top: 0; }
.side a {
  display: flex;
  align-items: center;
  color: var(--body);
  text-decoration: none;
  padding: 10px;
  border-radius: var(--radius-md);
  min-height: 44px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
}
.side a:hover, .side a:focus-visible { color: var(--ink); background: var(--canvas-soft); }
.side a[aria-current="page"] {
  color: var(--ink);
  background: var(--surface-strong);
}

.doc {
  flex: 1;
  max-width: 46rem;
  padding: 32px 32px 72px;
}
.doc h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 600;
  letter-spacing: -1.44px;
  line-height: 1.1;
  margin: 0 0 12px;
  color: var(--ink);
}
.doc h2 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.5px;
  line-height: 1.25;
  margin: 36px 0 10px;
  padding-top: 8px;
  color: var(--ink);
}
.doc h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  margin: 24px 0 8px;
  color: var(--ink);
}
.doc p, .doc li { color: var(--body); }
.doc li { margin: 6px 0; }
.doc strong { color: var(--ink); font-weight: 600; }
.lede {
  font-size: 16px;
  line-height: 1.5;
  margin-bottom: 20px;
  color: var(--body);
  max-width: 40rem;
}

.hero {
  position: relative;
  margin: -32px -32px 32px;
  padding: 48px 32px 40px;
  background:
    radial-gradient(ellipse 90% 80% at 50% -10%, var(--sky-light) 0%, var(--sky-mid) 38%, transparent 72%),
    var(--canvas);
  border-bottom: 1px solid var(--hairline);
}
.hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  letter-spacing: -1.44px;
}
.hero .lede { max-width: 36rem; }

.mock {
  margin-top: 24px;
  background: var(--surface-dark);
  color: var(--on-dark);
  border-radius: var(--radius-lg);
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: var(--shadow-soft);
}
.mock-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  background: #1a1a1a;
  color: var(--on-dark-soft);
  font-family: var(--font-mono);
  font-size: 12px;
}
.mock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3a3a3e;
}
.mock pre {
  margin: 0;
  padding: 20px;
  color: var(--on-dark);
}

.toc {
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  margin: 20px 0 28px;
  background: var(--surface-card);
}
.toc strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
}
.toc a {
  display: flex;
  align-items: center;
  color: var(--body);
  text-decoration: none;
  min-height: 44px;
  padding: 8px 0;
  font-size: 14px;
  font-weight: 500;
}
.toc a:hover { color: var(--text-link); }

table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 12px 0 20px; }
th, td {
  text-align: left;
  vertical-align: top;
  padding: 12px 12px 12px 0;
  border-top: 1px solid var(--hairline);
}
th { color: var(--muted); font-weight: 500; width: 34%; }
td { color: var(--body); overflow-wrap: anywhere; }
code { overflow-wrap: anywhere; }

.panel {
  margin: 14px 0 22px;
  background: var(--surface-dark);
  border-radius: var(--radius-lg);
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
}
pre {
  margin: 0;
  padding: 20px;
  font-size: 13px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--on-dark);
  white-space: pre;
}

.note {
  border: 1px solid var(--hairline-strong);
  border-left: 3px solid var(--warning);
  border-radius: var(--radius-lg);
  padding: 12px 16px;
  margin: 16px 0;
  background: var(--canvas-soft);
  color: var(--body);
}

a.primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  min-height: 44px;
  border-radius: var(--radius-md);
  background: var(--primary);
  color: var(--on-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  padding: 12px 18px;
  touch-action: manipulation;
}
a.primary:hover { background: var(--primary-active); color: var(--on-primary); }

button.primary,
#try {
  min-height: 44px;
  border: 0;
  border-radius: var(--radius-md);
  background: var(--primary);
  color: var(--on-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  padding: 12px 18px;
  cursor: pointer;
  touch-action: manipulation;
}
button.primary:hover,
#try:hover { background: var(--primary-active); }

.page-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
}
.page-nav a { text-decoration: none; color: var(--body); }
.page-nav a:hover { color: var(--text-link); }
.page-nav > span:empty { display: none; }
.page-nav span { display: block; font-size: 13px; color: var(--muted); }
.page-nav strong { color: var(--ink); font-weight: 600; }

.site-foot {
  flex: 1 0 100%;
  border-top: 1px solid var(--hairline);
  padding: 8px max(32px, env(safe-area-inset-right)) max(20px, env(safe-area-inset-bottom)) calc(var(--side-w) + 32px);
  color: var(--body);
  font-size: 13px;
  line-height: 1.4;
}
.site-foot p { margin: 0; }
.site-foot a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 500;
  touch-action: manipulation;
}

html[lang="zh"],
html[lang="zh-Hans"] { line-height: 1.65; }

@media (max-width: 860px) {
  :root { --header-h: 56px; }
  .menu { display: inline-flex; align-items: center; justify-content: center; }
  .top {
    min-height: 56px;
    gap: 8px;
    padding: 6px max(12px, env(safe-area-inset-right)) 6px max(12px, env(safe-area-inset-left));
  }
  .notice { padding: 12px max(16px, env(safe-area-inset-right)) 12px max(16px, env(safe-area-inset-left)); }
  .status { display: none; }
  .langs { gap: 0; }
  .langs a { min-width: 40px; padding: 0 6px; }
  .shell { display: block; min-height: 0; }
  .side {
    position: fixed;
    z-index: 35;
    top: var(--header-h);
    left: 0;
    width: min(300px, 86vw);
    flex: none;
    height: calc(100dvh - var(--header-h));
    padding: 16px 16px max(24px, env(safe-area-inset-bottom));
    transform: translateX(-105%);
    transition: transform 180ms ease-out;
    box-shadow: none;
    border-right: 1px solid var(--hairline);
  }
  body.nav-open .side {
    transform: translateX(0);
    box-shadow: 16px 0 32px rgba(0, 0, 0, 0.12);
  }
  .nav-overlay {
    display: none;
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 34;
    background: rgba(23, 23, 23, 0.36);
  }
  body.nav-open .nav-overlay { display: block; }
  .doc {
    max-width: none;
    padding: 24px max(16px, env(safe-area-inset-right)) max(64px, calc(32px + env(safe-area-inset-bottom))) max(16px, env(safe-area-inset-left));
  }
  .hero {
    margin: -24px calc(-1 * max(16px, env(safe-area-inset-right))) 24px calc(-1 * max(16px, env(safe-area-inset-left)));
    padding: 32px max(16px, env(safe-area-inset-right)) 28px max(16px, env(safe-area-inset-left));
  }
  .doc h1, .hero h1 {
    font-size: clamp(28px, 8vw, 36px);
    letter-spacing: -0.04em;
  }
  .page-nav {
    flex-direction: column;
    gap: 8px;
  }
  .page-nav a {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 44px;
  }
  .site-foot {
    padding: 8px max(16px, env(safe-area-inset-right)) max(20px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  }
  .doc table {
    display: block;
  }
  .doc tr {
    display: block;
    padding: 12px 0;
    border-top: 1px solid var(--hairline);
  }
  .doc th, .doc td {
    display: block;
    width: 100%;
    padding: 2px 0 6px;
    border: 0;
  }
  .resource {
    padding: 16px;
  }
  .resource table,
  .resource tbody {
    display: block;
    width: 100%;
  }
  .resource thead { display: none; }
  .resource tr {
    display: block;
    padding: 12px 0 0;
    border: 0;
  }
  .resource tr + tr {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--hairline);
  }
  .resource th, .resource td {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
    width: 100%;
    padding: 4px 0;
    border: 0;
    white-space: normal;
  }
  .resource td::before {
    content: attr(data-label);
    color: var(--muted);
    font-weight: 500;
    flex: 0 0 28%;
  }
}
@media (max-width: 420px) {
  .brand { font-size: 13px; }
  .menu { padding: 0 10px; }
  .langs a { min-width: 36px; padding: 0 4px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .side { transition: none; }
}