:root {
  --bg: #0d1117;
  --bg-soft: #161b22;
  --bg-card: #1b222c;
  --border: #2d3643;
  --fg: #e6edf3;
  --fg-dim: #9aa7b4;
  --accent: #3fb950;
  --accent2: #58a6ff;
  --accent3: #d29922;
  --accent4: #b14aff;
  --sidebar-w: 270px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--fg); font-family: var(--sans); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: .88em; background: rgba(176,74,255,.10); padding: 2px 7px; border-radius: 5px; color: var(--accent4); }

.wiki-shell { display: flex; min-height: 100vh; }
.sidebar {
  position: fixed; top: 0; left: 0; bottom: 0; width: var(--sidebar-w);
  background: var(--bg-soft); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; z-index: 100; overflow-y: auto;
}
.content {
  margin-left: var(--sidebar-w); flex: 1; padding: 40px 52px 96px; max-width: 880px;
}
.mobile-bar { display: none; }

.sidebar-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 18px; border-bottom: 1px solid var(--border);
}
.brand {
  font-weight: 700; font-size: 1.05rem;
  display: flex; align-items: center; gap: 9px; color: var(--fg); text-decoration: none;
}
.brand:hover { text-decoration: none; }
.brand .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 10px var(--accent);
}
.lang-btn {
  border: 1px solid var(--border); background: var(--bg);
  color: var(--fg-dim); border-radius: 16px; padding: 4px 10px;
  cursor: pointer; font-size: .78rem; font-family: var(--sans);
}
.lang-btn:hover { border-color: var(--accent2); color: var(--fg); }

.sidebar-nav { flex: 1; padding: 14px 0 18px; }
.nav-group { margin-bottom: 10px; }
.nav-group::before {
  content: attr(data-label); display: block; padding: 10px 18px 5px;
  font-size: .7rem; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--fg-dim);
}
.nav-item {
  display: block; padding: 7px 18px 7px 22px; color: var(--fg-dim);
  font-size: .88rem; border-left: 2px solid transparent;
  text-decoration: none; transition: .12s;
}
.nav-item:hover { color: var(--fg); background: rgba(88,166,255,.06); text-decoration: none; }
.nav-item.active {
  color: var(--accent2); border-left-color: var(--accent2);
  background: rgba(88,166,255,.08); font-weight: 600;
}

.sidebar-foot {
  padding: 14px 18px; border-top: 1px solid var(--border);
  display: flex; gap: 14px; font-size: .85rem; flex-wrap: wrap;
}

.page { display: none; }
.page:target,
.page.active { display: block; }

.page h1 { font-size: 2rem; letter-spacing: -.5px; margin-bottom: 14px; }
.page h2 {
  font-size: 1.25rem; margin: 32px 0 12px; padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.page .page > * + * { margin-top: 0; }
.page p { color: var(--fg-dim); margin-bottom: 12px; }
.page li { color: var(--fg-dim); }
.page .lead { font-size: 1.08rem; color: var(--fg); line-height: 1.8; }

.feat-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px; margin: 24px 0;
}
.feat-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 20px;
}
.feat-icon { font-size: 1.6rem; margin-bottom: 10px; }
.feat-card h3 { font-size: .95rem; margin-bottom: 6px; color: var(--fg); }
.feat-card p { font-size: .85rem; margin: 0; }

.protocol-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 10px; margin: 20px 0;
}
.proto-chip {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px;
  padding: 14px 12px; text-align: center; font-size: .85rem; color: var(--fg);
}
.proto-chip .icon { font-size: 1.3rem; margin-bottom: 4px; }

.callout {
  border-radius: 10px; padding: 14px 18px; margin: 18px 0;
  font-size: .92rem; border: 1px solid var(--border);
}
.callout strong { display: block; margin-bottom: 4px; color: var(--fg); }
.callout span, .callout p { color: var(--fg-dim); margin: 0; }
.callout.info { border-left: 3px solid var(--accent2); background: rgba(88,166,255,.06); }
.callout.tip { border-left: 3px solid var(--accent); background: rgba(63,185,80,.06); }
.callout.warn { border-left: 3px solid var(--accent3); background: rgba(210,153,34,.06); }

.code-block {
  background: #0a0e14; border: 1px solid var(--border); border-radius: 10px;
  padding: 16px 22px; overflow-x: auto; font-family: var(--mono);
  font-size: .84rem; line-height: 1.7; margin: 14px 0 22px; color: var(--fg-dim);
  white-space: pre;
}
.code-block code { background: none; padding: 0; color: inherit; font-size: inherit; }

.data-table {
  width: 100%; border-collapse: collapse; margin: 16px 0 26px; font-size: .88rem;
}
.data-table th {
  text-align: left; padding: 10px 14px; background: var(--bg-soft);
  border: 1px solid var(--border); color: var(--fg); font-weight: 600;
}
.data-table td {
  padding: 10px 14px; border: 1px solid var(--border);
  color: var(--fg-dim); vertical-align: top;
}
.data-table tr:hover td { background: rgba(88,166,255,.04); }

.steps { padding-left: 22px; margin: 14px 0 22px; }
.steps li { margin-bottom: 9px; color: var(--fg-dim); }
.plain-list { padding-left: 22px; margin: 14px 0 22px; }
.plain-list li { margin-bottom: 6px; color: var(--fg-dim); }

.screen-shot {
  margin: 22px 0; border: 1px solid var(--border); border-radius: 12px;
  overflow: hidden; background: var(--bg-card); position: relative;
}
.screen-shot::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 34px;
  background: var(--bg-soft); border-bottom: 1px solid var(--border);
}
.screen-shot::after {
  content: "● ● ●"; position: absolute; top: 10px; left: 14px;
  letter-spacing: 6px; color: var(--border); font-size: .7rem;
}
.screen-shot .shot-body { padding: 52px 26px 26px; }
.screen-shot .shot-title {
  text-align: center; color: var(--fg-dim); font-size: .82rem;
  margin-bottom: 14px;
}
.layout-wire {
  display: grid; grid-template-columns: 4fr 1fr; gap: 14px;
  background: #0a0e14; border: 1px solid var(--border); border-radius: 8px;
  padding: 18px;
}
.wire-half {
  background: var(--bg-card); border: 1px dashed var(--border);
  border-radius: 8px; padding: 16px; min-height: 120px;
}
.wire-half h4 { font-size: .85rem; color: var(--accent2); margin-bottom: 6px; }
.wire-half p { font-size: .78rem; margin: 0; color: var(--fg-dim); }
.wire-half ul { font-size: .78rem; color: var(--fg-dim); padding-left: 18px; margin: 6px 0 0; }

.arch-flow {
  display: flex; align-items: center; gap: 12px; margin: 24px 0; flex-wrap: wrap;
}
.arch-step {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px 18px; font-size: .88rem; color: var(--fg);
  min-width: 120px; text-align: center;
}
.arch-step small { display: block; color: var(--fg-dim); font-size: .72rem; margin-top: 2px; }
.arch-arrow { color: var(--accent2); font-size: 1.4rem; }

.faq-list { margin-top: 18px; }
.faq-item {
  border: 1px solid var(--border); border-radius: 10px; margin-bottom: 10px;
  background: var(--bg-card);
}
.faq-item summary {
  padding: 14px 20px; cursor: pointer; font-weight: 600;
  color: var(--fg); list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before { content: "▸ "; color: var(--accent2); }
.faq-item[open] summary::before { content: "▾ "; }
.faq-item > p { padding: 0 20px 16px; margin: 0; font-size: .9rem; }

.deploy-pick {
  display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: 16px;
  margin: 22px 0;
}
.deploy-card {
  border: 1px solid var(--border); border-radius: 12px; padding: 22px;
  background: var(--bg-card); transition: border-color .15s;
}
.deploy-card:hover { border-color: var(--accent2); }
.deploy-card h3 { font-size: 1.05rem; margin-bottom: 8px; color: var(--fg); }
.deploy-card p { font-size: .85rem; margin: 0; }

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); transition: transform .25s; }
  .sidebar.open { transform: translateX(0); box-shadow: 4px 0 24px rgba(0,0,0,.5); }
  .content { margin-left: 0; padding: 72px 20px 60px; }
  .mobile-bar {
    display: flex; align-items: center; gap: 12px;
    position: fixed; top: 0; left: 0; right: 0; height: 54px; z-index: 90;
    background: rgba(13,17,23,.92); backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border); padding: 0 16px;
  }
  .menu-btn {
    background: none; border: 1px solid var(--border); color: var(--fg);
    border-radius: 6px; padding: 4px 10px; cursor: pointer; font-size: 1.1rem;
  }
  .mobile-title { font-weight: 600; font-size: .95rem; flex: 1; }
  .lang-btn.sm { margin-left: auto; }
}