:root {
  --bg: #07111f;
  --surface: #101d30;
  --surface-2: #162740;
  --text: #eef5ff;
  --muted: #aebdd0;
  --accent: #5eead4;
  --accent-2: #60a5fa;
  --warning: #fbbf24;
  --success: #34d399;
  --border: rgba(255,255,255,.11);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% 8%, rgba(94,234,212,.12), transparent 28rem),
    radial-gradient(circle at 90% 2%, rgba(96,165,250,.14), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, sans-serif;
  line-height: 1.6;
}

.hero, main, footer { width: min(1180px, calc(100% - 2rem)); margin: auto; }
.hero { padding: 5rem 0 2rem; }
.eyebrow { color: var(--accent); letter-spacing: .16em; font-size: .78rem; font-weight: 800; }
h1 { max-width: 900px; margin: .5rem 0 1rem; font-size: clamp(2.8rem, 7vw, 5.7rem); line-height: 1; letter-spacing: -.055em; }
.lead { max-width: 800px; color: var(--muted); font-size: 1.1rem; }
.notice { display: inline-block; margin-top: 1rem; padding: .75rem 1rem; border: 1px solid var(--border); border-radius: 12px; color: var(--muted); background: rgba(255,255,255,.035); }

.controls { display: flex; flex-wrap: wrap; gap: .75rem; align-items: end; padding: 2rem 0; }
button, select {
  min-height: 44px; border-radius: 11px; border: 1px solid var(--border);
  font: inherit; font-weight: 700;
}
button { padding: .7rem 1rem; cursor: pointer; background: var(--accent); color: #06121d; }
button.secondary, select { background: var(--surface); color: var(--text); }
button:disabled { opacity: .45; cursor: not-allowed; }
label { display: grid; gap: .3rem; color: var(--muted); font-size: .82rem; }
select { padding: .55rem .8rem; }

.summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 2rem; }
.summary article { padding: 1.2rem; background: rgba(255,255,255,.035); border: 1px solid var(--border); border-radius: 16px; }
.summary span { display: block; font-size: 2rem; font-weight: 800; }
.summary small { color: var(--muted); }

.workflow {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem; align-items: stretch;
}
.node {
  position: relative; min-height: 225px; padding: 1.35rem;
  background: linear-gradient(145deg, rgba(22,39,64,.97), rgba(16,29,48,.95));
  border: 1px solid var(--border); border-radius: 20px;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease, opacity .25s ease;
  cursor: pointer;
}
.node:hover { transform: translateY(-3px); border-color: rgba(94,234,212,.55); }
.node h2 { margin: .5rem 0; font-size: 1.25rem; }
.node p { color: var(--muted); font-size: .92rem; }
.node strong { position: absolute; left: 1.35rem; bottom: 1.15rem; color: var(--muted); font-size: .8rem; }
.number { color: var(--accent); font-weight: 800; font-size: .78rem; letter-spacing: .1em; }
.node.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(94,234,212,.08), 0 20px 55px rgba(0,0,0,.25);
  transform: translateY(-4px);
}
.node.active strong { color: var(--accent); }
.node.complete { border-color: rgba(52,211,153,.6); }
.node.complete strong { color: var(--success); }
.node.warning.active { border-color: var(--warning); }
.node.warning.active strong { color: var(--warning); }
.connector, .branch {
  display: none;
}
.details {
  margin: 2rem 0 5rem; padding: 1.5rem;
  border: 1px solid var(--border); border-radius: 18px; background: rgba(255,255,255,.035);
}
.details h2 { margin-top: 0; }
.details p { margin-bottom: 0; color: var(--muted); }
footer { border-top: 1px solid var(--border); padding: 2rem 0 3rem; color: var(--muted); font-size: .85rem; }

@media (max-width: 850px) {
  .summary { grid-template-columns: repeat(2, 1fr); }
  .workflow { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .summary { grid-template-columns: 1fr; }
  .hero { padding-top: 3rem; }
}