:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-alt: #eef6f8;
  --text: #172026;
  --muted: #60717a;
  --line: #dbe6ea;
  --primary: #0f8b8d;
  --primary-dark: #09666a;
  --accent: #d97706;
  --code-bg: #102027;
  --code-text: #e7f7f8;
  color-scheme: light;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Microsoft YaHei", "PingFang SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

a {
  color: var(--primary-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 54px);
  border-bottom: 1px solid rgba(219, 230, 234, 0.86);
  background: rgba(248, 250, 252, 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--primary);
  color: white;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 42px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 74px clamp(18px, 4vw, 54px) 46px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 18px;
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: 28px;
  line-height: 1.25;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 18px;
  letter-spacing: 0;
}

.lead {
  max-width: 780px;
  margin-bottom: 26px;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button,
.inline-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 16px;
  border-radius: 8px;
  font-weight: 700;
}

.button:hover,
.inline-button:hover {
  text-decoration: none;
}

.button.primary,
.inline-button {
  background: var(--primary);
  color: white;
}

.button.secondary {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
}

.endpoint-panel {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 18px 50px rgba(17, 34, 40, 0.08);
}

.panel-label {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.endpoint-panel code {
  display: block;
  margin-bottom: 14px;
  padding: 14px;
  border-radius: 8px;
  background: var(--code-bg);
  color: var(--code-text);
  font-size: 16px;
  overflow-x: auto;
}

.endpoint-panel p {
  margin: 0;
  color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 34px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px clamp(18px, 4vw, 54px) 72px;
}

.toc {
  position: sticky;
  top: 86px;
  align-self: start;
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.toc a {
  padding: 7px 8px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 14px;
}

.toc a:hover {
  background: var(--surface-alt);
  color: var(--primary-dark);
  text-decoration: none;
}

.content {
  min-width: 0;
}

.doc-section {
  margin-bottom: 18px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.doc-section > :last-child {
  margin-bottom: 0;
}

.steps {
  padding-left: 24px;
}

.steps li,
.doc-section li {
  margin-bottom: 8px;
}

code {
  padding: 2px 5px;
  border-radius: 5px;
  background: #edf4f6;
  color: #0f5960;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 0.94em;
}

pre {
  margin: 16px 0 22px;
  padding: 18px;
  border-radius: 8px;
  background: var(--code-bg);
  color: var(--code-text);
  overflow-x: auto;
}

pre code {
  padding: 0;
  background: transparent;
  color: inherit;
  font-size: 14px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
}

th,
td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface-alt);
  color: var(--text);
  font-size: 14px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.cards article {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdfe;
}

.cards article p {
  margin-bottom: 0;
  color: var(--muted);
}

.notice {
  padding: 14px 16px;
  border-left: 4px solid var(--accent);
  border-radius: 6px;
  background: #fff7ed;
  color: #7c3d12;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 24px;
  padding: 28px clamp(18px, 4vw, 54px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: var(--surface);
  font-size: 14px;
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .top-nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 44px;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  h1 {
    font-size: 34px;
  }

  .doc-section {
    padding: 20px;
  }

  .toc {
    grid-template-columns: 1fr;
  }
}