:root {
  --ink: #17211d;
  --muted: #68716d;
  --paper: #f4f1e9;
  --card: rgba(255, 255, 252, .88);
  --line: #d9d6cc;
  --green: #12644c;
  --green-soft: #dff1e8;
  --orange: #e85d2a;
  --orange-soft: #fff0e8;
  --red: #b43d31;
  --amber: #9c6813;
  --shadow: 0 18px 50px rgba(32, 42, 37, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 5% 0%, rgba(232, 93, 42, .12), transparent 28rem),
    radial-gradient(circle at 96% 25%, rgba(18, 100, 76, .12), transparent 30rem),
    var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, textarea, input { font: inherit; }
button:focus-visible, textarea:focus-visible, input:focus-visible { outline: 3px solid rgba(232, 93, 42, .28); outline-offset: 2px; }

.shell { width: min(1480px, calc(100% - 40px)); margin: auto; padding: 34px 0 48px; }
.hero { display: flex; justify-content: space-between; align-items: flex-end; gap: 36px; padding: 16px 0 24px; }
.eyebrow, .step-label { color: var(--orange); font-size: 11px; font-weight: 850; letter-spacing: .14em; }
.eyebrow { margin: 0 0 16px; }
h1 { max-width: 980px; margin: 0; font-size: clamp(42px, 5vw, 72px); line-height: .96; letter-spacing: -.055em; }
h1 em { color: var(--green); font-family: Georgia, serif; font-weight: 500; }
.subtitle { max-width: 830px; margin: 16px 0 0; color: var(--muted); font-size: clamp(16px, 1.7vw, 20px); line-height: 1.45; }
.hero-side { max-width: 270px; padding-bottom: 8px; }
.hero-side p { margin: 12px 0 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.status-pill { display: inline-flex; align-items: center; gap: 8px; padding: 9px 13px; border: 1px solid #add7c6; border-radius: 999px; background: var(--green-soft); color: var(--green); font-size: 12px; font-weight: 800; }
.status-pill i { width: 8px; height: 8px; border-radius: 50%; background: #19a56f; box-shadow: 0 0 0 4px rgba(25, 165, 111, .12); }

.workflow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; align-items: center; gap: 10px; margin-bottom: 18px; }
.workflow > b { color: #a4aaa5; font-size: 20px; }
.workflow-step { display: grid; grid-template-columns: auto 1fr; column-gap: 10px; padding: 13px 15px; border-top: 1px solid var(--line); }
.workflow-step span { grid-row: 1 / 3; align-self: center; color: var(--orange); font-family: ui-monospace, monospace; font-size: 12px; }
.workflow-step strong { font-size: 14px; }
.workflow-step small { color: var(--muted); font-size: 11px; }

.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.card { min-width: 0; border: 1px solid var(--line); border-radius: 20px; background: var(--card); padding: 22px; box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.card-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 15px; margin-bottom: 16px; }
.card h2 { margin: 4px 0 0; font-size: 24px; letter-spacing: -.035em; }
.card h3 { margin: 18px 0 9px; color: #49524e; font-size: 13px; }

.live-toggle { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 12px; font-weight: 700; cursor: pointer; }
.live-toggle input { accent-color: var(--orange); }
textarea { width: 100%; resize: vertical; padding: 15px; border: 1px solid #cac7bc; border-radius: 13px; background: #fffefa; color: var(--ink); line-height: 1.55; }
textarea:focus { border-color: var(--orange); }
.preset-row { display: flex; flex-wrap: wrap; gap: 7px; margin: 12px 0; }
.preset, .downloads button, .downloads a { border: 1px solid var(--line); border-radius: 999px; background: #fffefa; color: #4b5550; padding: 7px 10px; font-size: 12px; font-weight: 700; cursor: pointer; text-decoration: none; }
.preset:hover, .preset.active { border-color: var(--orange); background: var(--orange-soft); color: #ad3c17; }
.primary { width: 100%; display: flex; justify-content: space-between; border: 0; border-radius: 12px; background: var(--ink); color: white; padding: 12px 15px; font-weight: 800; cursor: pointer; }
.primary:hover { background: var(--green); }
.primary:disabled { opacity: .55; cursor: progress; }
.mode-note, .provenance { margin: 9px 0 0; color: var(--muted); font-size: 11px; }
.error { margin: 10px 0 0; padding: 10px; border-radius: 10px; background: #fff0ee; color: var(--red); font-size: 12px; font-weight: 700; }
.hidden { display: none; }

.badge { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 7px 10px; font-size: 10px; font-weight: 900; letter-spacing: .08em; white-space: nowrap; }
.badge.sample { background: #efede6; color: #5b625e; }
.badge.live { background: var(--orange-soft); border-color: #f2c0aa; color: #b9441a; }
.badge.pass { background: var(--green-soft); border-color: #add7c6; color: var(--green); }
.badge.warning { background: #fff5d8; border-color: #ead49a; color: var(--amber); }
.badge.bounded { background: #eff0f8; color: #4f5986; }
.summary { margin: 0; padding: 12px 14px; border-left: 3px solid var(--orange); border-radius: 0 10px 10px 0; background: var(--orange-soft); font-weight: 750; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { border-radius: 999px; background: #eceee9; padding: 6px 9px; font-family: ui-monospace, monospace; font-size: 11px; }

.constraint-list { display: grid; gap: 7px; }
.constraint { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 9px; align-items: center; padding: 9px 11px; border: 1px solid var(--line); border-radius: 11px; }
.constraint strong { display: block; overflow-wrap: anywhere; font-family: ui-monospace, monospace; font-size: 12px; }
.constraint small { display: block; margin-top: 3px; color: var(--muted); font-size: 9px; line-height: 1.3; }
.constraint code { color: var(--orange); font-weight: 900; }
.constraint-value { font-size: 12px; font-weight: 800; text-align: right; }
.curriculum { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 7px; overflow-x: auto; }
.level { min-width: 115px; padding: 10px; border-radius: 11px; background: #eef2ee; }
.level-heading { display: flex; justify-content: space-between; gap: 8px; }
.level-heading strong { font-size: 11px; }
.level-heading small { color: var(--green); font-weight: 900; }
.level p { margin: 8px 0 0; color: var(--muted); font-family: ui-monospace, monospace; font-size: 9px; line-height: 1.4; }

.truth-labels { display: flex; flex-wrap: wrap; gap: 6px; margin: -5px 0 12px; }
.truth-labels span { padding: 5px 7px; border: 1px solid var(--line); border-radius: 5px; background: #f3f1ea; color: #59625d; font-size: 9px; font-weight: 850; letter-spacing: .06em; }
.evidence-card img { display: block; width: 100%; max-height: 310px; object-fit: contain; border: 1px solid var(--line); border-radius: 12px; background: white; }
.metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin-top: 10px; }
.metric { padding: 10px; border: 1px solid var(--line); border-radius: 11px; }
.metric-name { color: var(--muted); font-size: 10px; font-weight: 800; }
.metric-values { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px; margin-top: 5px; font-size: 14px; font-weight: 850; }
.metric .before { color: var(--red); }
.metric .after { color: var(--green); }
.metric .arrow { color: #8f9692; }
.metric small { color: var(--muted); }
.threshold { margin-top: 4px; color: var(--muted); font-size: 9px; }

pre { max-height: 260px; margin: 0; overflow: auto; padding: 14px; border-radius: 12px; background: #17211d; color: #e7ede8; white-space: pre-wrap; font-size: 11px; line-height: 1.5; }
.downloads { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.downloads button:hover, .downloads a:hover { border-color: var(--green); color: var(--green); }
.task-details { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
ul { margin: 6px 0 0; padding-left: 18px; color: #4d5651; font-size: 11px; line-height: 1.45; }
li { margin: 6px 0; }
li strong.blocking { color: var(--red); }
li strong.warning { color: var(--amber); }

.case-study { display: grid; grid-template-columns: .55fr 1.45fr; gap: 24px; margin-top: 16px; }
.case-copy p { color: var(--muted); line-height: 1.55; }
.video-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 10px; }
video { width: 100%; aspect-ratio: 16/9; border-radius: 12px; background: #101512; }
footer { margin-top: 18px; color: var(--muted); font-size: 12px; line-height: 1.55; }

@media (max-width: 980px) {
  .hero { align-items: flex-start; flex-direction: column; }
  .hero-side { max-width: 100%; }
  .workflow { overflow-x: auto; grid-template-columns: 170px auto 170px auto 170px auto 170px; }
  .grid, .case-study { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .shell { width: min(100% - 22px, 1480px); padding-top: 12px; }
  .hero { padding-top: 16px; }
  .card { padding: 16px; border-radius: 16px; }
  .card-heading, .task-details { grid-template-columns: 1fr; }
  .card-heading { align-items: flex-start; }
  .curriculum { grid-template-columns: repeat(4, 130px); }
  .constraint { grid-template-columns: minmax(0, 1fr) auto; }
  .constraint-value { grid-column: 1 / 3; text-align: left; }
  .metrics, .video-grid, .task-details { grid-template-columns: 1fr; }
}