:root {
  --bg: #070b12;
  --bg2: #0d1320;
  --panel: #121a2b;
  --panel2: #182036;
  --border: #2a3650;
  --text: #eef2f7;
  --muted: #94a3b8;
  --accent: #3b82f6;
  --accent2: #8b5cf6;
  --ok: #22c55e;
  --warn: #f59e0b;
  --bad: #ef4444;
}

* { box-sizing: border-box; }
body {
  margin: 0 auto;
  max-width: 1200px;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(ellipse 80% 50% at 50% -10%, #1e2a4a 0%, var(--bg) 55%);
  color: var(--text);
  padding: 1.25rem 1.5rem 2rem;
  line-height: 1.55;
}

h2 {
  margin: 0 0 .5rem;
  font-size: 1.15rem;
  font-weight: 700;
}

.section { margin-bottom: 2rem; }
.section-intro {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: .92rem;
  max-width: 72ch;
}

/* Hero */
.hero {
  margin-bottom: 2rem;
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: linear-gradient(135deg, var(--panel) 0%, var(--bg2) 100%);
}
.eyebrow {
  margin: 0 0 .35rem;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--accent);
  font-weight: 600;
}
.hero h1 { margin: 0 0 .5rem; font-size: 2rem; }
.lead { margin: 0 0 1rem; color: #cbd5e1; max-width: 75ch; font-size: .98rem; }
.lead strong { color: var(--text); }
.hero-badges { display: flex; flex-wrap: wrap; gap: .45rem; margin-bottom: .85rem; }
.pill {
  font-size: .72rem;
  font-weight: 600;
  padding: .25rem .55rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel2);
  color: #cbd5e1;
}
.api-status {
  font-size: .85rem;
  padding: .45rem .65rem;
  border-radius: 8px;
  background: var(--bg2);
  border: 1px solid var(--border);
  display: inline-block;
}
.api-status.ok { border-color: color-mix(in srgb, var(--ok) 45%, var(--border)); color: #bbf7d0; }
.api-status.bad { border-color: color-mix(in srgb, var(--bad) 45%, var(--border)); color: #fecaca; }

/* Architecture */
.arch-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: .5rem;
  align-items: stretch;
  margin-bottom: 1rem;
}
@media (max-width: 900px) {
  .arch-flow { grid-template-columns: 1fr; }
  .arch-arrow { display: none; }
}
.arch-node {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: .85rem 1rem;
  background: var(--panel);
}
.arch-num {
  display: inline-flex;
  width: 1.5rem;
  height: 1.5rem;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  font-size: .75rem;
  font-weight: 800;
  margin-bottom: .4rem;
}
.arch-node h3 { margin: 0 0 .2rem; font-size: .95rem; }
.arch-model { margin: 0 0 .45rem; font-size: .78rem; color: var(--accent); font-weight: 600; }
.arch-node p { margin: 0; font-size: .82rem; color: var(--muted); }
.arch-arrow {
  align-self: center;
  color: var(--muted);
  font-size: 1.25rem;
  font-weight: 700;
}
.arch-diagram {
  margin: 0;
  padding: 1rem 1.1rem;
  border-radius: 10px;
  background: #060a10;
  border: 1px solid var(--border);
  font-size: .72rem;
  line-height: 1.35;
  overflow-x: auto;
  color: #94a3b8;
}

/* Capabilities */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .65rem;
}
@media (max-width: 700px) { .cap-grid { grid-template-columns: 1fr; } }
.cap-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: .85rem 1rem;
  background: var(--panel);
}
.cap-card h3 { margin: 0 0 .4rem; font-size: .92rem; }
.cap-card p { margin: 0; font-size: .84rem; color: var(--muted); }

.check-list {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
  font-size: .88rem;
}
.check-list li { margin: .35rem 0; }
.check-list code {
  font-size: .8rem;
  background: var(--panel2);
  padding: .1rem .3rem;
  border-radius: 4px;
}

/* Demo section */
.demo-section {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.15rem 1.25rem;
  background: var(--panel);
}
.demo-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .6rem;
  margin-bottom: 1rem;
}
@media (max-width: 900px) { .demo-cards { grid-template-columns: 1fr; } }
.demo-card {
  text-align: left;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: .85rem 1rem;
  background: var(--panel2);
  color: var(--text);
  cursor: pointer;
  transition: border-color .15s, transform .15s;
}
.demo-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.demo-card strong { display: block; margin: .35rem 0 .25rem; font-size: .92rem; }
.demo-card p { margin: 0; font-size: .8rem; color: var(--muted); }
.demo-tag {
  display: inline-block;
  font-size: .68rem;
  font-weight: 700;
  padding: .12rem .4rem;
  border-radius: 999px;
}
.demo-tag.ok { background: #14532d; color: #bbf7d0; }
.demo-tag.bad { background: #7f1d1d; color: #fecaca; }

.advanced {
  margin-bottom: .85rem;
  font-size: .85rem;
  color: var(--muted);
}
.advanced summary { cursor: pointer; color: var(--text); font-weight: 600; margin-bottom: .5rem; }
.controls { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; padding-top: .5rem; }
.controls label { font-size: .85rem; color: var(--muted); display: flex; flex-direction: column; gap: .25rem; }
.controls input[type=url] {
  min-width: 280px;
  padding: .45rem .6rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg2);
  color: var(--text);
}
.check { flex-direction: row !important; align-items: center; gap: .4rem !important; }

.field-label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: .35rem;
  color: var(--muted);
}

.primary {
  width: 100%;
  margin-top: .65rem;
  background: linear-gradient(90deg, #2563eb, #7c3aed);
  border: none;
  border-radius: 10px;
  color: #fff;
  font-weight: 700;
  padding: .85rem;
  cursor: pointer;
  font-size: .95rem;
}
.primary:hover { filter: brightness(1.08); }
.primary:disabled { opacity: .55; cursor: not-allowed; }

textarea {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg2);
  color: var(--text);
  padding: .75rem;
  resize: vertical;
  font-family: inherit;
}

.hidden { display: none !important; }

.progress { margin: 1.25rem 0; }
.progress h2 { font-size: 1rem; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; }
.step {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .65rem .75rem;
  background: var(--panel);
  min-height: 76px;
}
.step.running { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.step.done { border-color: color-mix(in srgb, var(--ok) 50%, var(--border)); }
.step.skipped { opacity: .85; }
.step.error { border-color: var(--bad); }
.step-title { font-weight: 700; font-size: .9rem; }
.step-msg { font-size: .82rem; color: var(--muted); margin-top: .35rem; word-break: break-word; }

.status-bar {
  margin: .75rem 0 1rem;
  padding: .65rem .85rem;
  border-radius: 8px;
  background: var(--panel);
  border: 1px solid var(--border);
  font-weight: 600;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .75rem;
}
@media (max-width: 960px) { .grid, .steps { grid-template-columns: 1fr; } }

.panel {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  padding: .85rem 1rem;
}
.panel h3 { margin: 0; font-size: 1rem; }
.cap { margin: .15rem 0 .75rem; color: var(--muted); font-size: .8rem; }
.body.muted { color: var(--muted); }
.body code, .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .78rem;
  word-break: break-all;
}
.kv { margin: .35rem 0; font-size: .88rem; }
.tag {
  display: inline-block;
  padding: .15rem .45rem;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 700;
}
.tag.ok { background: #14532d; color: #bbf7d0; }
.tag.bad { background: #7f1d1d; color: #fecaca; }
.tag.warn { background: #78350f; color: #fde68a; }
.vuln { color: #fecaca; font-size: .85rem; margin: .25rem 0; }
.fact {
  background: #0f172a;
  border-left: 3px solid var(--accent);
  padding: .4rem .55rem;
  margin: .35rem 0;
  font-size: .82rem;
}
.wdk-payload {
  margin-top: .5rem;
  padding: .65rem;
  background: #060a10;
  border: 1px solid var(--border);
  border-radius: 8px;
  max-height: 220px;
  overflow: auto;
  font-size: .72rem;
}
.small { font-size: .78rem; }

.footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: .78rem;
  color: var(--muted);
  text-align: center;
}