:root {
  --bg: #f6f8fb;
  --card: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e6ebf2;
  --accent: #2563eb;
  --accent-ink: #1e40af;
  --good: #10b981;
  --bad: #ef4444;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* Topbar */
.topbar { background: #0b1220; color: #fff; }
.topbar-in { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { font-weight: 700; letter-spacing: .2px; }
.live { display: flex; align-items: center; gap: 8px; font-size: 13px; color: #c7d2fe; }
.live .dot { width: 8px; height: 8px; border-radius: 50%; background: #22c55e; box-shadow: 0 0 0 4px rgba(34,197,94,.18); }

/* Hero */
.hero { background: linear-gradient(180deg, #0b1220 0%, #16223b 100%); color: #fff; padding: 40px 0 56px; }
.hero h1 { margin: 0 0 10px; font-size: 30px; line-height: 1.2; }
.hero .sub { margin: 0; max-width: 720px; color: #b9c4d8; font-size: 16px; }

/* Layout cards */
main { padding-bottom: 56px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  margin: 18px 0;
  box-shadow: 0 1px 2px rgba(15,23,42,.04);
}
.card h2 { margin: 0 0 14px; font-size: 19px; }
.card h3 { margin: 0 0 10px; font-size: 15px; color: var(--muted); font-weight: 600; }

/* KPIs */
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: -28px 0 4px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; box-shadow: 0 6px 18px rgba(15,23,42,.06); }
.kpi-label { font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); }
.kpi-value { font-size: 26px; font-weight: 750; margin: 6px 0 2px; }
.kpi-sub { font-size: 13px; color: var(--muted); }
.trend-up { color: var(--good); }
.trend-down { color: var(--bad); }
.trend-flat { color: var(--muted); }

/* Flow */
.flow { display: flex; align-items: stretch; gap: 10px; flex-wrap: wrap; }
.flow-step { flex: 1 1 160px; background: #f8fafc; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.flow-name { font-weight: 700; font-size: 14px; }
.flow-tool { font-size: 12px; color: var(--accent-ink); font-weight: 600; margin: 2px 0 6px; }
.flow-detail { font-size: 13px; color: var(--muted); }
.flow-arrow { align-self: center; color: #94a3b8; font-size: 20px; font-weight: 700; }

/* Charts */
.charts { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 18px 0; }
.chart-card { margin: 0; }
.charts .chart-card:first-child { grid-column: 1 / -1; }
.canvas-wrap { position: relative; height: 260px; }
.note { font-size: 12.5px; color: var(--muted); margin: 10px 0 0; }

/* Tables */
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .4px; color: var(--muted); }
tbody tr:hover { background: #f8fafc; }
table.raw { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }

/* Raw header / buttons */
.raw-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.raw-actions { display: flex; gap: 8px; }
.btn { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; padding: 9px 16px; border-radius: 9px; font-size: 14px; font-weight: 600; }
.btn:hover { background: var(--accent-ink); }
.btn.ghost { background: #eef2ff; color: var(--accent-ink); }
.btn.big { padding: 13px 26px; font-size: 16px; }

/* Architecture */
.arch-intro { color: var(--muted); margin-top: 0; }
.arch-stack { display: flex; gap: 10px; flex-wrap: wrap; align-items: stretch; }
.arch-stage { flex: 1 1 180px; background: linear-gradient(180deg,#f8fafc,#eef2ff); border: 1px solid #dbe3f4; border-radius: 10px; padding: 14px; }
.arch-stage-name { font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); }
.arch-tech { font-weight: 750; margin: 3px 0 6px; }
.arch-detail { font-size: 13px; color: var(--muted); }

/* CTA */
.cta { text-align: center; padding: 40px 20px; }
.cta h2 { margin: 0 0 6px; font-size: 22px; }
.cta p { color: var(--muted); margin: 0 0 18px; }

/* Footer */
.footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; padding: 22px 0; text-align: center; }

@media (max-width: 760px) {
  .kpis { grid-template-columns: 1fr 1fr; }
  .charts { grid-template-columns: 1fr; }
  .charts .chart-card:first-child { grid-column: auto; }
  .hero h1 { font-size: 24px; }
}