:root {
  --bg: #0f1216;
  --panel: #171b22;
  --line: #2a3140;
  --text: #e8ecf2;
  --muted: #9aa3b2;
  --accent: #5b9fd4;
  --accent2: #7dcea0;
  --warn: #e0b35a;
  --danger: #d97b7b;
  --radius: 12px;
  --font: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #1a2433 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.5;
}
a { color: var(--accent); }
.wrap { max-width: 980px; margin: 0 auto; padding: 24px 20px 80px; }
.nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 0 28px; gap: 12px; flex-wrap: wrap;
}
.brand { font-weight: 600; letter-spacing: 0.02em; }
.nav a.btn { text-decoration: none; }
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.15; margin: 0 0 12px; font-weight: 650;
}
.hero .sub { color: var(--muted); font-size: 1.05rem; max-width: 42rem; margin: 0 0 10px; }
.hero .proof { color: var(--accent2); font-size: 0.92rem; margin: 0 0 22px; }
.cta-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 28px; }
.btn {
  border: 1px solid var(--line); background: var(--panel); color: var(--text);
  padding: 10px 16px; border-radius: 999px; cursor: pointer; font: inherit;
}
.btn.primary { background: var(--accent); border-color: transparent; color: #0b1220; font-weight: 600; }
.btn.ghost:hover, .btn:hover { filter: brightness(1.08); }
.panel {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px; margin: 18px 0;
}
.panel h2 { margin: 0 0 12px; font-size: 1.15rem; }
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.step { background: #12161d; border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
.step b { display: block; margin-bottom: 6px; }
.check { list-style: none; padding: 0; margin: 0; }
.check li { padding: 6px 0; border-bottom: 1px solid var(--line); color: var(--muted); }
.check li strong { color: var(--text); }
.badge {
  display: inline-block; font-size: 0.75rem; padding: 3px 8px; border-radius: 999px;
  background: #2a2416; color: var(--warn); border: 1px solid #4a3d1e; margin-bottom: 10px;
}
label { display: block; font-size: 0.85rem; color: var(--muted); margin: 10px 0 4px; }
input, select {
  width: 100%; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: #10141b; color: var(--text); font: inherit;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.form-actions { margin-top: 14px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.note { font-size: 0.85rem; color: var(--muted); }
.ok { color: var(--accent2); }
.warn { color: var(--warn); }
#poc-svg { width: 100%; height: auto; background: #0c1016; border-radius: 8px; border: 1px solid var(--line); }
.poc-toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin: 12px 0; }
footer { margin-top: 40px; color: var(--muted); font-size: 0.85rem; border-top: 1px solid var(--line); padding-top: 18px; }
.mono { font-family: var(--mono); font-size: 0.85rem; }