:root {
  --bg: #f6f8fc;
  --panel: #ffffff;
  --text: #182233;
  --muted: #647084;
  --line: #dfe6f2;
  --blue: #2f6fef;
  --blue-soft: #eaf2ff;
  --orange: #f4a13a;
  --code-bg: #111827;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.68;
}

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 278px;
  padding: 28px 24px;
  background: var(--panel);
  border-right: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
}

.brand img {
  width: 156px;
  height: auto;
  display: block;
}

.brand span {
  padding-left: 10px;
  border-left: 1px solid var(--line);
  white-space: nowrap;
}

.nav {
  display: grid;
  gap: 8px;
  margin-top: 36px;
}

.nav a {
  padding: 10px 12px;
  color: var(--muted);
  text-decoration: none;
  border-radius: 6px;
}

.nav a:hover {
  color: var(--blue);
  background: var(--blue-soft);
}

.endpoint-card {
  margin-top: 36px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
}

.endpoint-card span,
.quick-card span,
.eyebrow {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.endpoint-card strong,
.quick-card code {
  display: block;
  margin-top: 6px;
  color: var(--blue);
  font-size: 14px;
  word-break: break-all;
}

.content {
  max-width: 1060px;
  margin-left: 278px;
  padding: 44px 54px 72px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 32px;
  align-items: end;
  padding: 36px 0 30px;
  border-bottom: 1px solid var(--line);
}

h1,
h2,
h3 {
  line-height: 1.28;
  margin: 0;
}

h1 {
  margin-top: 8px;
  font-size: 36px;
}

h2 {
  font-size: 28px;
}

h3 {
  margin-top: 30px;
  font-size: 20px;
}

h4 {
  margin: 0;
  font-size: 18px;
  line-height: 1.35;
}

p {
  margin: 12px 0 0;
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: 16px;
}

.quick-card {
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.quick-card code {
  font-size: 18px;
  font-weight: 700;
}

.doc-section {
  padding: 46px 0 10px;
}

.section-head {
  margin-bottom: 18px;
}

.notice {
  margin: 22px 0;
  padding: 16px 18px;
  border-left: 4px solid var(--orange);
  background: #fff8ee;
  border-radius: 6px;
}

.notice.danger {
  border-left-color: #ef4444;
  background: #fff1f2;
}

.forbidden-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.forbidden-list p {
  margin: 0;
  padding: 12px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.channel-card {
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.channel-card p {
  color: var(--muted);
}

table {
  width: 100%;
  margin-top: 16px;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

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

tr:last-child th,
tr:last-child td {
  border-bottom: 0;
}

th {
  width: 180px;
  color: #334155;
  background: #f9fbff;
}

code {
  padding: 2px 5px;
  color: #175bd8;
  background: var(--blue-soft);
  border-radius: 4px;
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 0.92em;
}

pre {
  margin: 16px 0 0;
  padding: 16px;
  overflow: auto;
  color: #eef4ff;
  background: var(--code-bg);
  border-radius: 8px;
}

pre code {
  padding: 0;
  color: inherit;
  background: transparent;
  border-radius: 0;
  font-size: 13px;
}

ul,
ol {
  padding-left: 22px;
}

li + li {
  margin-top: 6px;
}

@media (max-width: 900px) {
  .sidebar {
    position: static;
    width: auto;
    padding: 18px 20px;
  }

  .nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 18px;
  }

  .endpoint-card {
    margin-top: 16px;
  }

  .content {
    margin-left: 0;
    padding: 24px 20px 48px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 18px;
  }

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