:root {
  --bg: #0d1b2a;
  --bg2: #10243a;
  --panel: #13293f;
  --ink: #e8eef4;
  --dim: #8fa6ba;
  --gemma: #2a6f97;
  --tinker: #e76f51;
  --winner: #2a9d8f;
  --keep: #2a9d8f;
  --revert: #c45b4a;
  --line: #22425f;
  --radius: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1b3a57 0%, var(--bg) 55%);
  color: var(--ink);
  line-height: 1.55;
}
h1, h2 { line-height: 1.15; margin: 0 0 .4em; }
.accent { color: var(--winner); }
.sub { color: var(--dim); font-weight: 400; font-size: .62em; }
code { background: #0b1623; padding: 1px 6px; border-radius: 6px; color: #9fd3c7; font-size: .9em; }

/* ---- Hero ---- */
.hero {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px;
  align-items: center; max-width: 1100px; margin: 0 auto; padding: 56px 24px 24px;
}
.hero h1 { font-size: 4rem; letter-spacing: -2px; }
.tagline { font-size: 1.18rem; color: #cddae6; max-width: 34ch; }
.badges { display: flex; gap: 8px; margin-bottom: 18px; flex-wrap: wrap; }
.badge {
  font-size: .78rem; padding: 4px 11px; border-radius: 999px;
  background: #0b1a2b; border: 1px solid var(--line); color: var(--dim);
}
.badge-accent { background: rgba(42,157,143,.15); color: #7fe0cf; border-color: #2a9d8f55; }
.pipeline { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 22px 0; }
.pipeline .step {
  background: var(--panel); border: 1px solid var(--line); padding: 8px 13px; border-radius: 10px; font-size: .92rem;
}
.pipeline .step em { color: var(--dim); font-style: normal; }
.pipeline .arrow { color: var(--dim); }
.hero-img img { width: 100%; border-radius: var(--radius); box-shadow: 0 20px 50px rgba(0,0,0,.45); display: block; }

/* ---- Stats ---- */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  max-width: 1100px; margin: 10px auto 0; padding: 20px 24px;
}
.stat {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px;
}
.stat .num { font-size: 2rem; font-weight: 800; }
.stat .lbl { color: var(--dim); font-size: .85rem; }
.stat.win .num { color: var(--winner); }

/* ---- Deck CTA ---- */
.deck-cta { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.deck-cta .hint { margin: 6px 0 0; max-width: 62ch; }
.deck-cta-actions { display: flex; flex-direction: column; gap: 10px; min-width: 240px; }
.deck-btn {
  display: inline-block; text-align: center; text-decoration: none;
  background: var(--winner); color: #06211c; font-weight: 700;
  padding: 11px 18px; border-radius: 10px; border: 1px solid transparent;
}
.deck-btn:hover { filter: brightness(1.08); }
.deck-btn.ghost { background: transparent; color: #9fd3c7; border-color: var(--line); font-weight: 600; }
.deck-btn.ghost:hover { border-color: var(--winner); }
@media (max-width: 680px) { .deck-cta-actions { width: 100%; } }

/* ---- Panels ---- */
.panel { max-width: 1100px; margin: 26px auto; padding: 26px; background: var(--bg2);
  border: 1px solid var(--line); border-radius: 18px; }
.panel h2 { font-size: 1.5rem; }
.panel-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; }
.hint { color: var(--dim); font-size: .95rem; margin: 6px 0 20px; }
.keep { color: var(--keep); font-weight: 700; }
.revert { color: var(--revert); font-weight: 700; }
.controls { display: flex; gap: 12px; align-items: center; }
.controls select, .ghost-btn {
  background: var(--panel); color: var(--ink); border: 1px solid var(--line);
  padding: 7px 12px; border-radius: 9px; font-size: .9rem; cursor: pointer;
}
.ghost-btn:hover { border-color: var(--winner); }

/* ---- Runs ---- */
.runs { display: grid; gap: 14px; }
.run {
  border: 1px solid var(--line); border-left: 4px solid var(--dim); border-radius: 12px;
  padding: 16px 18px; background: var(--panel);
  opacity: 0; transform: translateY(10px); animation: rise .45s forwards;
}
.run.keep-run { border-left-color: var(--keep); }
.run.revert-run { border-left-color: var(--revert); }
@keyframes rise { to { opacity: 1; transform: none; } }
.run-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 8px; }
.run-title { font-weight: 700; }
.decision { font-size: .8rem; padding: 3px 10px; border-radius: 999px; font-weight: 700; }
.decision.keep { background: rgba(42,157,143,.16); color: #7fe0cf; }
.decision.revert { background: rgba(196,91,74,.16); color: #f0a595; }
.reason { color: #cddae6; font-style: italic; margin: 6px 0 10px; }
.cfg { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.chip { font-size: .76rem; background: #0b1a2b; border: 1px solid var(--line); padding: 3px 9px; border-radius: 7px; color: var(--dim); }
.loss { font-size: .9rem; color: var(--dim); }
.loss b { color: var(--ink); }

/* ---- Generalization case stepper ---- */
.case-counter { color: var(--dim); font-size: .9rem; min-width: 48px; text-align: center; display: inline-block; }
.case-card { margin-top: 8px; }
.case-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 20px; }
.case-scenario, .case-decisions { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.case-scenario h3, .case-decisions h3 { font-size: 1.05rem; margin: 0 0 12px; }
.case-tag { display: inline-block; font-size: .72rem; color: #7fe0cf; background: rgba(42,157,143,.14);
  border: 1px solid #2a9d8f55; padding: 2px 9px; border-radius: 999px; margin-bottom: 10px; }
.facts { display: grid; gap: 7px; }
.fact { display: flex; justify-content: space-between; gap: 12px; font-size: .9rem; border-bottom: 1px dashed var(--line); padding-bottom: 6px; }
.fact .fk { color: var(--dim); }
.fact .fv { font-weight: 600; text-align: right; }
.vs { color: var(--dim); font-weight: 400; font-size: .8rem; }
.score-pill { float: right; font-size: .78rem; font-weight: 700; padding: 3px 10px; border-radius: 999px;
  background: rgba(231,111,81,.16); color: #f0a595; }
.score-pill.perfect { background: rgba(42,157,143,.18); color: #7fe0cf; }
.dtable { width: 100%; border-collapse: collapse; font-size: .9rem; }
.dtable th { text-align: left; color: var(--dim); font-weight: 600; font-size: .78rem; padding: 6px 8px; border-bottom: 1px solid var(--line); }
.dtable td { padding: 9px 8px; border-bottom: 1px solid var(--line); }
.dtable .d-label { color: #cddae6; }
.dtable .d-pred { font-weight: 600; }
.dtable .d-conf { color: var(--dim); font-weight: 400; font-size: .82rem; }
.dtable .d-gold { color: var(--dim); }
.dtable .d-mark { text-align: center; font-weight: 800; }
.dtable tr.d-ok .d-mark { color: var(--keep); }
.dtable tr.d-miss .d-mark { color: var(--revert); }
.dtable tr.d-miss td { background: rgba(196,91,74,.07); }

/* ---- Try it yourself ---- */
.try-it { margin-top: 20px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; padding: 18px 20px; }
.try-it h3 { margin: 0 0 8px; font-size: 1.05rem; color: #7fe0cf; }
.try-it pre { background: #0b1623; border: 1px solid var(--line); border-radius: 10px;
  padding: 14px 16px; overflow-x: auto; margin: 12px 0; }
.try-it pre code { background: none; padding: 0; color: #9fd3c7; font-size: .86rem; line-height: 1.7; }

/* ---- Charts ---- */
.charts { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.charts figure { margin: 0; }
.charts img { width: 100%; border-radius: 10px; background: #fff; }
.charts figcaption { color: var(--dim); font-size: .85rem; margin-top: 8px; }

/* ---- Table ---- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { padding: 11px 14px; text-align: right; border-bottom: 1px solid var(--line); }
th:first-child, td:first-child, th:nth-child(2), td:nth-child(2) { text-align: left; }
thead th { color: var(--dim); font-weight: 600; font-size: .85rem; }
tr.winner-row td { background: rgba(42,157,143,.1); font-weight: 700; }
tr.tinker-row td:first-child { color: #f0a595; }
.role { color: var(--dim); font-size: .85rem; }

/* ---- Guardrails ---- */
.guardrails ul { list-style: none; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.guardrails li { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 13px 16px; }

/* ---- Footer links ---- */
.links { max-width: 1100px; margin: 26px auto 60px; padding: 30px 26px; text-align: center; }
.link-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin: 16px 0; }
.link-row a {
  background: var(--panel); border: 1px solid var(--line); color: var(--ink); text-decoration: none;
  padding: 12px 20px; border-radius: 11px; font-weight: 600; transition: border-color .15s, transform .1s;
}
.link-row a:hover { border-color: var(--winner); transform: translateY(-2px); }
.made { color: var(--dim); font-size: .9rem; margin-top: 10px; }

/* ---- Responsive ---- */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 36px; }
  .hero h1 { font-size: 3rem; }
  .hero-img { order: -1; }
  .stats { grid-template-columns: 1fr 1fr; }
  .charts { grid-template-columns: 1fr; }
  .guardrails ul { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
}