:root {
  --bg: #f5f5f7;
  --surface: rgba(255,255,255,0.92);
  --text: #1d1d1f;
  --text-soft: #6e6e73;
  --line: rgba(29,29,31,0.08);
  --primary: #0071e3;
  --primary-deep: #0077ed;
  --primary-soft: rgba(0,113,227,0.10);
  --shadow: 0 10px 30px rgba(0,0,0,0.04);
  --max: 1100px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; color: var(--text); background: linear-gradient(180deg, #fbfbfd 0%, #f5f5f7 100%); }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.shell { max-width: var(--max); margin: 0 auto; padding: 16px; }
.topbar { position: sticky; top: 0; z-index: 20; background: rgba(251,251,253,0.82); backdrop-filter: blur(18px); border-bottom: 1px solid rgba(29,29,31,0.05); }
.topbar-inner { max-width: var(--max); margin: 0 auto; padding: 12px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand { font-weight: 700; letter-spacing: -0.02em; }
.brand small { color: var(--text-soft); font-weight: 500; }
.nav { display: flex; gap: 6px; overflow: auto; -webkit-overflow-scrolling: touch; }
.nav a { white-space: nowrap; padding: 8px 12px; border-radius: 999px; color: var(--text-soft); border: 1px solid transparent; }
.nav a.active { color: var(--primary-deep); background: var(--primary-soft); border-color: rgba(91,124,255,0.14); }
.hero, .panel, .card, .board { background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: 22px; backdrop-filter: blur(18px); }
.hero { padding: 22px; margin-top: 16px; }
.eyebrow { display: inline-flex; align-items: center; padding: 6px 10px; border-radius: 999px; background: var(--primary-soft); color: var(--primary-deep); font-size: 12px; font-weight: 700; }
.hero h1, .page-head h1 { margin: 12px 0 8px; font-size: clamp(28px, 7vw, 48px); line-height: 1.04; letter-spacing: -0.045em; }
.hero p, .lede, .muted { color: var(--text-soft); line-height: 1.55; }
.grid-3, .grid-2 { display: grid; gap: 12px; grid-template-columns: 1fr; }
.card { padding: 18px; }
.card h2, .card h3 { margin: 0 0 8px; font-size: 18px; letter-spacing: -0.03em; }
.card p { margin: 0 0 12px; color: var(--text-soft); line-height: 1.55; }
.card.primary { border-color: rgba(91,124,255,0.18); box-shadow: 0 10px 24px rgba(91,124,255,0.08); }
.button-row { display: flex; gap: 10px; flex-wrap: wrap; }
.btn { appearance: none; border: 1px solid transparent; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 16px; border-radius: 999px; transition: 140ms ease; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-deep); }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--line); }
.btn-ghost { background: transparent; color: var(--text-soft); }
.section-title { margin: 22px 0 10px; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-soft); }
.page-head { margin: 14px 0 14px; }
.kpis { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 8px; }
.kpi { padding: 12px; border-radius: 16px; background: #fff; border: 1px solid var(--line); min-width: 0; }
.kpi-label { font-size: 10px; color: var(--text-soft); text-transform: uppercase; letter-spacing: .06em; }
.kpi-value { margin-top: 6px; font-size: 20px; font-weight: 700; letter-spacing: -0.04em; }
.panel, .board { padding: 16px; }
.info { padding: 12px 14px; border-radius: 14px; background: #fff; border: 1px solid var(--line); color: var(--text-soft); line-height: 1.45; }
.inline-meta { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { padding: 8px 10px; border-radius: 999px; background: #fff; border: 1px solid var(--line); color: var(--text-soft); font-size: 13px; }
.chip.primary { color: var(--primary-deep); background: var(--primary-soft); border-color: rgba(91,124,255,0.14); }
.footer-note { margin-top: 12px; color: var(--text-soft); font-size: 12px; }
pre { margin: 0; padding: 14px 16px; overflow: auto; border-radius: 16px; background: #111318; color: #eef1f7; line-height: 1.55; }
code { font-family: "SF Mono", "JetBrains Mono", ui-monospace, monospace; }
@media (min-width: 721px) {
  .shell { padding: 20px; }
  .topbar-inner { padding: 14px 20px; gap: 14px; }
  .grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}