:root {
  --canvas: #f2f1ec;
  --surface: #f8f7f3;
  --field: #fbfaf7;
  --sidebar: #edece5;
  --ink: #191b1a;
  --ink-2: #3c413e;
  --muted: #5d625e;
  --faint: #8a8f88;
  --hairline: #ddd9cb;
  --hairline-2: #c9c4b4;
  --teal: #0f766b;
  --teal-deep: #0a5b50;
  --teal-tint: #dfeeeb;
  --amber: #dfa94f;
  --amber-ink: #8a5a00;
  --red: #b3261e;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif; background: var(--canvas); color: var(--ink); line-height: 1.6; display: flex; }
a { color: var(--teal-deep); text-decoration: none; border-bottom: 1px solid var(--teal); }
a:hover { color: var(--teal); }

.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 12px; top: 12px; background: var(--teal); color: white; padding: 8px 12px; border-radius: 6px; z-index: 999; }

.sidebar { width: 240px; background: var(--sidebar); border-right: 1px solid var(--hairline); padding: 20px; flex-shrink: 0; }
.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; }
.logo-svg { width: 40px; height: 40px; border-radius: 8px; }
.brand div { font-weight: 700; font-size: 20px; }
.tag { font-family: monospace; font-size: 11px; color: var(--faint); margin-left: 4px; }

.content { flex: 1; padding: 40px; max-width: 900px; }
.hero { text-align: center; margin-bottom: 40px; }
.hero-logo { width: 120px; height: 120px; margin-bottom: 16px; }
.hero h2 { font-family: Georgia, "Times New Roman", serif; font-size: 36px; margin: 0 0 8px; letter-spacing: -0.02em; }
.hero p { color: var(--muted); font-size: 15px; margin: 0; }

.summary-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 16px; margin: 28px 0; }
.stat { background: var(--surface); border: 1px solid var(--hairline); border-radius: 8px; padding: 14px 16px; }
.stat .k { font-family: monospace; font-size: 10.5px; color: var(--faint); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 6px; }
.stat .v { font-family: monospace; font-size: 24px; font-weight: 700; color: var(--ink); letter-spacing: -0.03em; }

.card { background: var(--surface); border: 1px solid var(--hairline); border-radius: 10px; padding: 16px; }
.panel { padding: 20px; }
.cmd-block { background: var(--field); border: 1px solid var(--hairline-2); border-radius: 8px; padding: 16px; overflow-x: auto; font-family: SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 13px; line-height: 1.5; color: var(--ink-2); margin: 0; }
.cmd-block code { white-space: pre; }

details.sg-item { border: 1px solid var(--hairline); border-radius: 10px; margin-bottom: 12px; }
details.sg-item[open] { background: var(--field); }
details.sg-item > summary { padding: 14px 16px; font-family: monospace; font-size: 12px; font-weight: 600; color: var(--teal-deep); cursor: pointer; list-style: none; }
details.sg-item > summary::-webkit-details-marker { display: none; }
details.sg-item > summary::before { content: "+ "; color: var(--faint); }
details.sg-item[open] > summary::before { content: "- "; }
details.sg-item > * { padding: 16px; }

.setup-steps { padding-left: 20px; margin: 0; }
.setup-steps li { margin-bottom: 10px; font-size: 14px; color: var(--ink-2); }

.note { background: var(--amber-tint); border: 1px solid var(--amber-border); color: var(--amber-ink); padding: 12px 14px; border-radius: 8px; font-family: monospace; font-size: 13px; margin-top: 12px; }

footer { color: var(--faint); font-size: 12px; }

@media (max-width: 700px) {
  body { flex-direction: column; }
  .sidebar { width: 100%; padding: 12px; }
  .brand { margin-bottom: 0; }
  .content { padding: 20px; }
  .hero h2 { font-size: 28px; }
}