:root {
  color-scheme: light;
  --bg: #f5f6f2;
  --card: #ffffff;
  --text: #1d1f1c;
  --muted: #5b6460;
  --accent: #1f7a6f;
  --accent-2: #ef7e3b;
  --shadow: 0 16px 40px rgba(22, 33, 30, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #ffffff, var(--bg));
}

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

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.page-header {
  padding: 56px 0 32px;
  background: linear-gradient(135deg, #e7f3ef, #fff4e8);
  border-bottom: 1px solid #e6ebe7;
}

.page-header.small {
  padding: 32px 0 24px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 12px;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 8px;
}

.subtitle {
  margin: 8px 0 0;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  padding: 32px 0 56px;
}

.home-layout {
  display: grid;
  grid-template-columns: minmax(220px, 260px) 1fr;
  gap: 24px;
  padding: 32px 0 56px;
}

.grid-section .grid {
  padding: 0;
}

.pagination-wrap {
  margin-top: 24px;
  padding: 14px 16px;
  border: 1px solid #dfe5e1;
  border-radius: 14px;
  background: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 12px;
}

.pagination-summary {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  padding: 4px;
  border: 1px solid #e3e9e5;
  border-radius: 12px;
  background: #f7f9f8;
}

.pagination-link {
  min-width: 34px;
  height: 34px;
  padding: 0 10px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.pagination-link:hover {
  border-color: #d7dfda;
  background: #fff;
  color: var(--accent);
}

.pagination-link.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 14px rgba(31, 122, 111, 0.22);
}

.pagination-link.is-disabled {
  color: #9aa39e;
  background: transparent;
  border-color: transparent;
  cursor: not-allowed;
}

.filter-panel {
  position: sticky;
  top: 24px;
  align-self: start;
}

.filter-bar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 18px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(31, 122, 111, 0.08);
}

.filter-label {
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}

.filter-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.filter-button {
  position: relative;
  display: block;
  border: 1px solid transparent;
  padding: 10px 14px;
  border-radius: 12px;
  background: #f3f6f3;
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s ease;
}

.filter-button:hover {
  transform: translateY(-1px);
}

.filter-button.is-active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 18px rgba(31, 122, 111, 0.2);
}

.filter-text {
  display: inline-block;
}

.filter-badge {
  position: absolute;
  top: -7px;
  right: -7px;
  min-width: 20px;
  height: 20px;
  border-radius: 999px;
  background: rgba(31, 122, 111, 0.14);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  line-height: 20px;
  text-align: center;
  padding: 0 6px;
  box-shadow: 0 6px 14px rgba(22, 33, 30, 0.12);
  transition: background 0.2s ease, color 0.2s ease;
}

.filter-button.is-active .filter-badge {
  background: #fff;
  color: var(--accent);
}

.card {
  background: var(--card);
  padding: 20px;
  border-radius: 16px;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 50px rgba(22, 33, 30, 0.12);
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--muted);
}

.tag-list {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.header-tags {
  margin-bottom: 12px;
}

.tag {
  padding: 4px 10px;
  border-radius: 999px;
  background: #e9f3f1;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
}

.tag-websocket {
  background: #fff2e6;
  color: var(--accent-2);
}

.tag-mcp {
  background: #e8eefb;
  color: #3d5aa8;
}

.doc-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  padding: 32px 0 64px;
}

.doc-meta {
  position: sticky;
  top: 24px;
  align-self: start;
}

.meta-card {
  background: var(--card);
  padding: 20px;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.meta-card dl {
  margin: 0;
  display: grid;
  gap: 6px;
}

.meta-card dt {
  font-size: 12px;
  color: var(--muted);
}

.meta-card dd {
  margin: 0 0 8px;
  font-weight: 600;
}

.doc-body {
  background: var(--card);
  padding: 28px 32px;
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.doc-body h2 {
  margin-top: 28px;
}

.doc-body pre {
  background: #1e1f1d;
  color: #f4f4f4;
  padding: 16px;
  border-radius: 12px;
  overflow-x: auto;
}

.doc-body code {
  font-family: "JetBrains Mono", "Consolas", monospace;
}

.static-page-main {
  padding: 32px 0 64px;
}

.static-page-content {
  min-height: 300px;
}

.static-page-content > :first-child {
  margin-top: 0;
}

.static-page-content > :last-child {
  margin-bottom: 0;
}

.static-page-content p,
.static-page-content li {
  line-height: 1.75;
}

.static-page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
}

.static-page-content th,
.static-page-content td {
  border: 1px solid #e2e8e4;
  padding: 8px 10px;
  text-align: left;
}

.static-page-content th {
  background: #f5f8f6;
}

.back {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--accent);
  font-weight: 600;
}

.error {
  padding: 120px 0;
  text-align: center;
}

.site-footer {
  margin-top: 12px;
  padding: 20px 0 28px;
  border-top: 1px solid #dde3df;
  background: #fafbfa;
  color: var(--muted);
  font-size: 12px;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 0;
}

.site-footer .container span {
  display: inline-flex;
  align-items: center;
  padding: 0;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.site-footer .container span + span::before {
  content: "|";
  color: #acb6b0;
  margin: 0 10px;
}

@media (max-width: 900px) {
  .home-layout {
    grid-template-columns: 1fr;
  }

  .filter-panel {
    position: static;
  }

  .filter-options {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .filter-button {
    text-align: center;
  }

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

  .pagination-wrap {
    margin-top: 20px;
    padding: 12px;
    justify-content: center;
    flex-direction: column;
  }

  .pagination-link {
    min-width: 34px;
    height: 34px;
    font-size: 12px;
    padding: 0 10px;
  }

  .doc-meta {
    position: static;
  }

  .site-footer {
    padding: 16px 0 22px;
  }

  .site-footer .container {
    justify-content: center;
    gap: 8px;
    text-align: center;
  }

  .site-footer .container span {
    font-size: 11px;
  }

  .site-footer .container span + span::before {
    margin: 0 8px;
  }
}