:root{
  --bg:#0b1220;
  --bg2:#111827;
  --surface:#ffffff;
  --surface2:#f8fafc;
  --ink:#0f172a;
  --muted:#64748b;
  --line:#e2e8f0;
  --brand:#2563eb;
  --brand2:#1d4ed8;
  --accent:#0d9488;
  --warn:#b45309;
  --warnbg:#fffbeb;
  --ok:#047857;
  --okbg:#ecfdf5;
  --danger:#b91c1c;
  --radius:14px;
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --max:980px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Segoe UI",system-ui,-apple-system,"PingFang SC","Noto Sans SC",sans-serif;
  color:var(--ink);
  background:linear-gradient(180deg,#eef2ff 0%,#f8fafc 220px,#f1f5f9 100%);
  line-height:1.65;
  min-height:100vh;
}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand2);text-decoration:underline}
.shell{max-width:var(--max);margin:0 auto;padding:20px 20px 64px}
.topbar{
  position:sticky;top:0;z-index:20;
  backdrop-filter:blur(10px);
  background:rgba(255,255,255,.86);
  border-bottom:1px solid rgba(226,232,240,.9);
  margin:0 -20px 20px;padding:12px 20px;
  display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);text-decoration:none}
.brand:hover{text-decoration:none;color:var(--ink)}
.logo{
  width:36px;height:36px;border-radius:10px;
  object-fit:contain;display:block;background:#fff;
  box-shadow:0 4px 12px rgba(15,23,42,.12);
}
.nav{display:flex;flex-wrap:wrap;gap:6px}
.nav a{
  display:inline-block;padding:7px 12px;border-radius:999px;
  color:#334155;background:#f1f5f9;font-size:.9rem;text-decoration:none;
}
.nav a:hover{background:#e2e8f0;color:var(--ink);text-decoration:none}
.nav a.active{background:#dbeafe;color:#1e40af;font-weight:600}
.hero{
  background:radial-gradient(1200px 400px at 10% -20%,rgba(37,99,235,.18),transparent 55%),
             linear-gradient(135deg,#0f172a 0%,#1e293b 55%,#0f766e 140%);
  color:#fff;border-radius:22px;padding:28px 28px 26px;margin-bottom:22px;
  box-shadow:var(--shadow);
}
.hero h1{margin:0 0 10px;font-size:1.7rem;letter-spacing:.2px}
.hero p{margin:0;color:#cbd5e1;max-width:46rem}
.hero .chips{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 11px;border-radius:999px;font-size:.82rem;
  background:rgba(255,255,255,.12);color:#e2e8f0;border:1px solid rgba(255,255,255,.14);
}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:14px 0 8px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 18px 16px;box-shadow:0 1px 2px rgba(15,23,42,.04);
}
.card h2{margin:0 0 8px;font-size:1.08rem}
.card h3{margin:16px 0 8px;font-size:1rem}
.card p{margin:0 0 10px;color:#334155}
.section-title{
  margin:28px 0 10px;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--muted);font-weight:700;
}
.tile{
  display:block;background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:16px 16px 14px;text-decoration:none;color:inherit;
  transition:transform .15s ease, box-shadow .15s ease, border-color .15s ease;
  box-shadow:0 1px 2px rgba(15,23,42,.04);
  min-height:108px;
}
.tile:hover{
  transform:translateY(-2px);text-decoration:none;color:inherit;
  border-color:#bfdbfe;box-shadow:0 12px 28px rgba(37,99,235,.12);
}
.tile .kicker{font-size:.75rem;font-weight:700;letter-spacing:.04em;color:var(--brand);margin-bottom:6px}
.tile.warn .kicker{color:var(--warn)}
.tile.ok .kicker{color:var(--ok)}
.tile h3{margin:0 0 6px;font-size:1.02rem}
.tile p{margin:0;color:var(--muted);font-size:.9rem}
.callout{
  border-radius:14px;padding:12px 14px;margin:12px 0;border:1px solid transparent;
}
.callout.ok{background:var(--okbg);border-color:#a7f3d0;color:#065f46}
.callout.warn{background:var(--warnbg);border-color:#fde68a;color:#92400e}
.callout.bad{background:#fef2f2;border-color:#fecaca;color:#991b1b}
.meta{color:var(--muted);font-size:.9rem}
table{border-collapse:collapse;width:100%;background:#fff;font-size:.92rem;margin:10px 0;border-radius:12px;overflow:hidden}
th,td{border:1px solid var(--line);padding:10px 12px;vertical-align:top;text-align:left}
th{background:#f8fafc;font-weight:650;color:#0f172a}
ol,ul{padding-left:1.2em;margin:8px 0}
li{margin:4px 0}
pre{
  background:#0f172a;color:#e2e8f0;padding:14px 16px;border-radius:14px;
  overflow:auto;font-size:.84rem;line-height:1.45;border:1px solid #1e293b;
}
.pill{
  display:inline-block;padding:3px 9px;border-radius:999px;font-size:.78rem;font-weight:650;
  background:#eff6ff;color:#1d4ed8;margin-right:6px;
}
.footer{
  margin-top:36px;padding-top:16px;border-top:1px solid var(--line);
  color:var(--muted);font-size:.88rem;display:flex;flex-wrap:wrap;gap:8px 16px;justify-content:space-between;
}
.flow-list a.tile{min-height:72px}
@media (max-width:640px){
  .hero{padding:22px 18px}
  .hero h1{font-size:1.35rem}
  .shell{padding:14px 14px 48px}
  .topbar{margin:0 -14px 16px;padding:10px 14px}
}