:root {
  color: #111827;
  background: #ffffff;
  font-family:
    "PingFang SC",
    "Hiragino Sans GB",
    "Microsoft YaHei",
    Arial,
    sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  height: 100vh;
  margin: 0;
  overflow: hidden;
  background: #ffffff;
}

a {
  color: inherit;
  text-decoration: none;
}

code,
pre,
kbd,
samp,
.en-type {
  font-family: "Google Sans Code", "PingFang SC", Consolas, Menlo, monospace;
}

.page-shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
  min-height: 0;
  overflow: hidden;
  background: #ffffff;
}

.site-header {
  flex: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  min-height: 64px;
  padding: 0 max(28px, calc((100vw - 1080px) / 2));
  border-bottom: 1px solid #edf0f3;
  background: rgba(255, 255, 255, 0.96);
}

.brand {
  flex: none;
  font-size: 1.04rem;
  font-weight: 750;
  letter-spacing: 0;
}

.global-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 28px;
  min-width: 0;
  color: #6b7280;
  font-size: 0.9rem;
  font-weight: 600;
}

.global-nav a {
  line-height: 64px;
  transition: color 0.16s ease;
}

.global-nav a:hover,
.global-nav .is-active {
  color: #111827;
}

.docs-shell {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  min-height: 0;
  width: min(1080px, calc(100% - 72px));
  margin: 0 auto;
  overflow: hidden;
  padding: 38px 0 0;
}

.docs-intro {
  flex: none;
  max-width: 720px;
  padding-bottom: 30px;
}

.eyebrow {
  margin: 0 0 14px;
  color: #6b7280;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.docs-intro h1 {
  margin: 0;
  color: #0f172a;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  font-weight: 780;
  letter-spacing: 0;
}

.docs-layout {
  display: grid;
  flex: 1 1 auto;
  grid-template-columns: minmax(150px, 1fr) minmax(0, 5fr);
  gap: 28px;
  align-items: stretch;
  min-height: 0;
  overflow: hidden;
  border-top: 1px solid #e5e7eb;
  padding-top: 26px;
}

.docs-sidebar {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.sidebar-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  color: #6b7280;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.article-list {
  display: grid;
  gap: 10px;
  min-height: 0;
  overflow-y: auto;
  padding-right: 4px;
  padding-bottom: 28px;
}

.article-card {
  width: 100%;
  padding: 16px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #ffffff;
  color: #374151;
  cursor: pointer;
  text-align: left;
  transition:
    border-color 0.16s ease,
    background-color 0.16s ease,
    color 0.16s ease;
}

.article-card:hover,
.article-card.is-active {
  border-color: #cbd5e1;
  background: #f8fafc;
  color: #111827;
}

.article-card h2 {
  margin: 0;
  color: inherit;
  font-size: 0.98rem;
  line-height: 1.45;
  font-weight: 760;
}

.article-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
  color: #7b8492;
  font-size: 0.74rem;
  line-height: 1.4;
}

.article-card-tag {
  display: inline-flex;
  align-items: center;
  min-height: 20px;
  padding: 0 7px;
  border: 1px solid #d8dee8;
  border-radius: 999px;
  background: #ffffff;
  color: #4b5563;
  font-weight: 700;
}

.doc-reader {
  min-width: 0;
  min-height: 0;
  overflow-y: auto;
  padding-right: 10px;
  padding-bottom: 56px;
}

.doc-header {
  padding-bottom: 28px;
  border-bottom: 1px solid #e5e7eb;
}

.doc-meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
  color: #7b8492;
  font-size: 0.82rem;
  line-height: 1.5;
  font-weight: 650;
}

.doc-header h2 {
  margin: 0;
  color: #111827;
  font-size: clamp(1.54rem, 3vw, 2.2rem);
  line-height: 1.22;
  font-weight: 780;
  letter-spacing: 0;
}

.doc-header p {
  margin: 14px 0 0;
  color: #5f6875;
  font-size: 0.98rem;
  line-height: 1.76;
}

.markdown-body {
  padding-top: 30px;
  color: #374151;
  font-size: 0.98rem;
  line-height: 1.82;
}

.markdown-body > *:first-child {
  margin-top: 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  margin: 34px 0 14px;
  color: #111827;
  line-height: 1.34;
  font-weight: 760;
  letter-spacing: 0;
}

.markdown-body h1 {
  font-size: 1.72rem;
}

.markdown-body h2 {
  font-size: 1.34rem;
  padding-top: 8px;
}

.markdown-body h3 {
  font-size: 1.12rem;
}

.markdown-body p {
  margin: 0 0 16px;
}

.markdown-body a {
  color: #2563eb;
  font-weight: 650;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.markdown-body ul,
.markdown-body ol {
  margin: 0 0 18px;
  padding-left: 22px;
}

.markdown-body li + li {
  margin-top: 8px;
}

.markdown-body blockquote {
  margin: 22px 0;
  padding: 12px 0 12px 18px;
  border-left: 3px solid #94a3b8;
  color: #5f6875;
  background: #f8fafc;
}

.markdown-body code {
  padding: 0.16em 0.34em;
  border-radius: 5px;
  background: #f1f5f9;
  color: #0f172a;
  font-size: 0.92em;
}

.markdown-body pre {
  margin: 22px 0;
  overflow-x: auto;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #0f172a;
}

.markdown-body pre code {
  display: block;
  padding: 18px;
  background: transparent;
  color: #e5e7eb;
  font-size: 0.86rem;
  line-height: 1.7;
}

.markdown-body table {
  width: 100%;
  margin: 22px 0;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.markdown-body th,
.markdown-body td {
  padding: 10px 12px;
  border: 1px solid #e5e7eb;
  text-align: left;
  vertical-align: top;
}

.markdown-body th {
  background: #f8fafc;
  color: #111827;
  font-weight: 760;
}

.markdown-body hr {
  height: 1px;
  margin: 30px 0;
  border: 0;
  background: #e5e7eb;
}

.state-message {
  padding: 20px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #f8fafc;
  color: #5f6875;
}

@media (max-width: 860px) {
  body {
    height: auto;
    min-height: 100vh;
    overflow: auto;
  }

  .page-shell {
    display: block;
    height: auto;
    min-height: 100vh;
    overflow: visible;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 18px 22px;
  }

  .global-nav {
    width: 100%;
    justify-content: flex-start;
    gap: 18px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .global-nav a {
    flex: none;
    line-height: 1.4;
  }

  .docs-shell {
    display: block;
    width: min(100% - 44px, 760px);
    overflow: visible;
    padding: 32px 0 56px;
  }

  .docs-layout {
    display: block;
    overflow: visible;
    padding-top: 26px;
  }

  .docs-sidebar {
    display: block;
    position: static;
    overflow: visible;
    margin-bottom: 30px;
  }

  .article-list {
    grid-template-columns: 1fr;
    overflow: visible;
    padding-right: 0;
    padding-bottom: 0;
  }

  .doc-reader {
    overflow: visible;
    padding-right: 0;
    padding-bottom: 0;
  }
}

@media (max-width: 560px) {
  .docs-shell {
    width: min(100% - 32px, 760px);
  }

  .docs-intro {
    padding-bottom: 30px;
  }

  .article-card {
    padding: 14px;
  }

  .markdown-body {
    font-size: 0.95rem;
  }
}