:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color-scheme: dark;
  --bg: #0b0d10;
  --panel: #12161b;
  --panel-2: #171c22;
  --text: #f5f7fa;
  --muted: #a7b0bc;
  --line: #2b333d;
  --accent: #9bd2ff;
  --good: #9be7c4;
  --warn: #ffcc8a;
}
* { box-sizing: border-box; }
body { margin: 0; background: radial-gradient(circle at 20% 0%, #17202a 0, var(--bg) 38rem); color: var(--text); }
main { width: min(1050px, calc(100% - 32px)); margin: 0 auto; padding: 64px 0 80px; }
.hero { margin-bottom: 34px; }
.topline, .section-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.eyebrow, .step { text-transform: uppercase; letter-spacing: .11em; font-size: .72rem; font-weight: 750; color: var(--accent); margin: 0; }
h1 { font-size: clamp(2.5rem, 7vw, 5.2rem); max-width: 900px; line-height: .96; letter-spacing: -.055em; margin: 18px 0; }
h2 { font-size: clamp(1.3rem, 3vw, 2rem); margin: 5px 0; letter-spacing: -.025em; }
h3 { margin: 6px 0 8px; }
p { line-height: 1.6; }
.lede { color: var(--muted); max-width: 820px; font-size: 1.05rem; }
.stack { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.stack span, .badge { border: 1px solid var(--line); background: rgba(255,255,255,.03); border-radius: 999px; padding: 7px 10px; font-size: .78rem; color: var(--muted); }
.badge.ok { color: var(--good); border-color: color-mix(in srgb, var(--good) 36%, var(--line)); }
.badge.error { color: var(--warn); }
.panel, .mini-panel, .notice { border: 1px solid var(--line); background: color-mix(in srgb, var(--panel) 94%, transparent); border-radius: 20px; padding: 24px; margin: 18px 0; box-shadow: 0 16px 50px rgba(0,0,0,.16); }
.workflow { margin-top: 26px; }
button, textarea, input { font: inherit; }
button { border: 1px solid var(--line); background: var(--panel-2); color: var(--text); border-radius: 12px; padding: 10px 14px; cursor: pointer; }
button:hover { border-color: #53606f; }
button:disabled { opacity: .55; cursor: wait; }
button.primary { background: var(--text); color: #0a0c0f; font-weight: 700; border-color: var(--text); }
.prompts { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0; }
.prompt { font-size: .84rem; }
.prompt.danger { border-color: #675244; }
label { display: block; font-weight: 700; margin-bottom: 8px; }
textarea { width: 100%; resize: vertical; min-height: 104px; color: var(--text); background: #0e1216; border: 1px solid var(--line); border-radius: 12px; padding: 13px; line-height: 1.5; }
input[type="file"] { display: block; margin: 14px 0 4px; color: var(--muted); }
pre { white-space: pre-wrap; overflow-wrap: anywhere; background: #0d1115; border: 1px solid var(--line); border-radius: 12px; padding: 14px; color: #c8d1dc; }
details { border-top: 1px solid var(--line); margin-top: 20px; padding-top: 16px; }
summary { cursor: pointer; font-weight: 700; }
.muted, .meta { color: var(--muted); }
.answer-wrap { margin-top: 24px; border-top: 1px solid var(--line); padding-top: 20px; }
.output-label { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; margin: 0 0 10px; }
.answer { white-space: pre-wrap; line-height: 1.65; font-size: 1.05rem; }
.meta { font-size: .8rem; overflow-wrap: anywhere; }
.citations { display: grid; gap: 10px; margin-top: 16px; }
.citation { border: 1px solid var(--line); border-radius: 14px; padding: 14px; background: #0e1216; }
.citation strong { display: inline-block; margin-right: 10px; }
.citation .score { color: var(--muted); font-size: .78rem; }
.citation p { margin: 8px 0 0; color: #c9d0d9; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; margin-top: 18px; }
.mini-panel { margin: 0; }
.mini-panel p:last-child { color: var(--muted); margin-bottom: 0; }
.notice { color: #d8dee6; font-size: .92rem; }
@media (max-width: 720px) {
  main { padding-top: 34px; }
  .topline, .section-head { align-items: flex-start; flex-direction: column; }
  .grid { grid-template-columns: 1fr; }
  h1 { font-size: clamp(2.4rem, 14vw, 4rem); }
}
.runtime-strip { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:10px; margin:18px 0 24px; }
.runtime-strip div { border:1px solid var(--line); background:rgba(255,255,255,.025); border-radius:14px; padding:12px 14px; min-width:0; }
.runtime-strip span { display:block; color:var(--muted); font-size:.68rem; text-transform:uppercase; letter-spacing:.1em; margin-bottom:4px; }
.runtime-strip strong { display:block; overflow-wrap:anywhere; font-size:.88rem; }
.badge.warn { color:var(--warn); border-color:color-mix(in srgb,var(--warn) 36%,var(--line)); }
.notice.warning { border-color:color-mix(in srgb,var(--warn) 42%,var(--line)); background:color-mix(in srgb,#2b2012 48%,var(--panel)); }
.architecture pre { font-size:.9rem; line-height:1.55; }
@media (max-width:720px) { .runtime-strip { grid-template-columns:repeat(2,minmax(0,1fr)); } }