:root {
  --ink: #152238;
  --muted: #627086;
  --line: #dce4ee;
  --paper: #f5f7fa;
  --surface: #ffffff;
  --navy: #0f1d33;
  --blue: #2f6fed;
  --blue-soft: #eaf1ff;
  --amber: #b86d16;
  --amber-soft: #fff6e7;
  --green: #187a59;
  --red: #bd3f4c;
  --shadow: 0 18px 50px rgba(25, 43, 70, .08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font: 15px/1.55 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--blue); text-underline-offset: 3px; }
a:hover { color: #1e4fb7; }
.skip-link { position: absolute; inset-block-start: -100px; inset-inline-start: 20px; z-index: 5; padding: 10px 14px; color: white; background: var(--navy); border-radius: 8px; }
.skip-link:focus { inset-block-start: 12px; }
.hero { color: #f4f7fb; background: radial-gradient(circle at 80% 0%, #29456f 0, transparent 38%), var(--navy); padding: 26px max(22px, calc((100% - 1120px) / 2)) 54px; }
.topbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; max-width: 1120px; margin: auto; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: white; text-decoration: none; font-weight: 750; letter-spacing: -.02em; }
.brand-mark { display: grid; place-items: center; width: 28px; height: 28px; color: var(--navy); background: #93b7ff; border-radius: 8px; font-weight: 850; }
.topbar nav { display: flex; flex-wrap: wrap; gap: 22px; }
.topbar nav a { color: #b9c7dc; text-decoration: none; font-size: 13px; }
.topbar nav a:hover { color: white; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 380px); align-items: end; gap: 70px; max-width: 1120px; margin: 70px auto 0; }
.eyebrow, .section-label { margin: 0 0 12px; color: #76a3f7; font: 700 11px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .13em; text-transform: uppercase; }
h1 { max-width: 680px; margin: 0; font-size: clamp(38px, 6vw, 68px); line-height: .98; letter-spacing: -.055em; }
h2 { margin: 0; font-size: 21px; line-height: 1.15; letter-spacing: -.025em; }
.hero-lede { max-width: 650px; margin: 22px 0 20px; color: #c7d2e3; font-size: 18px; line-height: 1.45; }
.hero-links { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; font-size: 13px; }
.hero-links a { color: #a9c5ff; font-weight: 650; }
.hero-links span { color: #8091aa; }
.hero-status { padding: 22px; border: 1px solid rgba(186, 207, 240, .24); border-radius: 16px; background: rgba(255,255,255,.07); box-shadow: 0 12px 34px rgba(0,0,0,.12); }
.status-dot { display: inline-block; width: 9px; height: 9px; margin-inline-end: 7px; border-radius: 50%; background: #f3b65e; box-shadow: 0 0 0 5px rgba(243,182,94,.14); }
.status-label { display: inline-block; margin: 0 0 13px; color: #afbdd1; font-size: 12px; }
.hero-status strong { display: block; color: white; font-size: 25px; letter-spacing: -.035em; }
.hero-status p:last-child { margin: 10px 0 0; color: #b9c7dc; font-size: 13px; }
main { max-width: 1120px; margin: -24px auto 70px; padding: 0 22px; position: relative; }
main:focus { outline-offset: 8px; }
section { scroll-margin-top: 24px; }
.decision-card, .panel { border: 1px solid var(--line); border-radius: 16px; background: var(--surface); box-shadow: var(--shadow); }
.decision-card { padding: 30px; }
.decision-card .section-label, .panel .section-label { color: var(--blue); }
.decision-heading, .section-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 28px; }
.decision-heading p, .section-heading p, .panel-heading p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.decision-pill, .metric-note { flex: none; padding: 6px 10px; border: 1px solid #cfe0ff; border-radius: 999px; color: #2258b9; background: var(--blue-soft); font: 700 11px ui-monospace, monospace; }
#decisions { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; margin-top: 26px; }
.decision { min-height: 150px; padding: 18px 20px; border: 1px solid #f1d7a9; border-inline-start: 4px solid var(--amber); border-radius: 12px; background: var(--amber-soft); }
.decision.accept { border-color: #b9e4d2; border-inline-start-color: var(--green); background: #effaf5; }
.decision.reject { border-color: #f0bdc4; border-inline-start-color: var(--red); background: #fff3f4; }
.decision h3 { margin: 0 0 12px; color: var(--ink); font: 700 13px ui-monospace, monospace; overflow-wrap: anywhere; }
.decision .arm-id { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; font-weight: 500; }
.decision ul { margin: 0; padding-inline-start: 18px; color: #4d5c70; font-size: 13px; }
.decision-footnote, .note { margin: 18px 0 0; color: var(--muted); font-size: 12px; }
.workflow { margin-top: 24px; }
.workflow-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 18px; }
.panel { padding: 26px; margin-top: 12px; box-shadow: 0 10px 34px rgba(25, 43, 70, .05); }
.panel-heading { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 22px; }
.step-number { display: grid; flex: none; place-items: center; width: 26px; height: 26px; color: var(--blue); border: 1px solid #c9d9fa; border-radius: 8px; background: var(--blue-soft); font: 800 12px ui-monospace, monospace; }
.identity { padding: 14px; margin: 0 0 20px; color: #40516a; border: 1px solid var(--line); border-radius: 9px; background: #f8fafc; font: 12px/1.65 ui-monospace, monospace; overflow-wrap: anywhere; }
label, legend { display: block; color: #40516a; font-size: 12px; font-weight: 700; }
.helper { color: var(--muted); font-weight: 400; }
input, select, button { max-width: 100%; min-height: 42px; padding: 9px 11px; color: var(--ink); border: 1px solid #6b7a8d; border-radius: 8px; background: white; font: inherit; }
input, select { width: 100%; margin-top: 7px; }
input:focus-visible, select:focus-visible, button:focus-visible { outline: 3px solid #1e4fb7; outline-offset: 2px; }
input[type=file] { margin-block: 8px 0; padding: 7px; font-size: 12px; }
fieldset { min-width: 0; padding: 0; border: 0; }
.form-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; margin-top: 10px; }
.policy-values { grid-template-columns: repeat(4, minmax(0,1fr)); margin-top: 18px; }
.button-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
button { cursor: pointer; font-weight: 700; }
button[type=submit] { color: white; border-color: var(--blue); background: var(--blue); }
button:hover:not(:disabled) { filter: brightness(.96); }
button:disabled { cursor: not-allowed; opacity: .5; }
details { margin-top: 14px; }
summary { cursor: pointer; padding: 7px 0; color: #315fae; font-size: 13px; font-weight: 650; text-decoration: underline; text-underline-offset: 3px; }
pre { max-width: 100%; padding: 12px; overflow: auto; color: #4d5c70; background: #f4f7fa; border-radius: 8px; font: 11px/1.55 ui-monospace, monospace; white-space: pre-wrap; overflow-wrap: anywhere; }
#status { min-height: 25px; padding: 18px 4px 4px; color: var(--muted); font-size: 13px; }
.comparison-panel, .replay-panel { margin-top: 24px; }
.chart { margin: 24px 0 10px; padding: 16px 10px 2px; border: 1px solid var(--line); border-radius: 10px; background: #fbfcfe; }
.chart svg { display: block; width: 100%; height: auto; }
.chart text { fill: var(--muted); font: 11px ui-monospace, monospace; }
.chart .pt-label { fill: #40516a; paint-order: stroke; stroke: #fbfcfe; stroke-width: 4px; stroke-linejoin: round; }
.table-scroll { overflow-x: auto; margin-top: 18px; border: 1px solid var(--line); border-radius: 10px; }
.tbl { width: 100%; border-collapse: collapse; font: 12px ui-monospace, monospace; }
.tbl caption { padding: 12px; color: var(--muted); text-align: start; }
.tbl th, .tbl td { padding: 11px 12px; border-top: 1px solid var(--line); text-align: right; white-space: nowrap; }
.tbl th:first-child, .tbl td:first-child { text-align: left; }
.tbl th { color: var(--muted); font-weight: 700; }
.tbl tbody th { color: var(--ink); }
.tbl td .v { display: block; color: var(--ink); font-weight: 700; font-variant-numeric: tabular-nums; }
.tbl td .c { display: block; margin-top: 2px; color: var(--muted); font-size: 10.5px; font-variant-numeric: tabular-nums; }
#preset { max-width: 520px; margin: 10px 0 0; }
.replay-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 400px), 1fr)); gap: 12px; margin-top: 18px; }
.replay-grid article { min-width: 0; padding: 16px; border: 1px solid var(--line); border-radius: 11px; background: #fbfcfe; }
.replay-grid article h3 { margin: 0 0 12px; font: 800 12px ui-monospace, monospace; }
.replay-grid article p { margin: 8px 0; color: #526177; font-size: 12px; }
.replay-grid .comp { color: var(--ink); white-space: pre-wrap; overflow-wrap: anywhere; }
footer { padding: 26px max(22px, calc((100% - 1120px) / 2)); color: #afbdd1; background: var(--navy); font-size: 12px; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 8px 22px; max-width: 1120px; margin: auto; }
.footer-inner strong { color: white; }
@media (max-width: 820px) {
  .hero-grid, .workflow-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-grid { margin-top: 56px; }
  .form-grid, .policy-values { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 560px) {
  .hero { padding-inline: 16px; padding-bottom: 42px; }
  .topbar nav { gap: 12px; }
  .hero-grid { margin-top: 44px; }
  main { padding-inline: 12px; }
  .decision-card, .panel { padding: 20px 16px; border-radius: 13px; }
  #decisions { grid-template-columns: 1fr; }
  .decision-heading, .section-heading { display: block; }
  .decision-pill, .metric-note { display: inline-block; margin-top: 16px; }
  .form-grid, .policy-values { grid-template-columns: 1fr; }
  h1 { font-size: 46px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition-duration: .01ms !important; animation-duration: .01ms !important; } }

/* Article page: same paper-on-navy system, prose measure capped for reading. */
/* main is pulled up over the hero on the gate page; the article starts below it. */
.article-main { margin-top: 0; padding-top: 46px; }
.prose { max-width: 760px; margin: 0 auto; padding: 0 22px; }
.prose h2 { margin: 40px 0 12px; font-size: clamp(22px, 3vw, 30px); letter-spacing: -.03em; }
.prose h3 { margin: 28px 0 10px; font-size: 18px; }
.prose p, .prose li { font-size: 16.5px; line-height: 1.68; }
.prose p { margin: 0 0 16px; }
.prose ul, .prose ol { margin: 0 0 18px; padding-inline-start: 22px; }
.prose li { margin-bottom: 8px; }
.table-scroll { overflow-x: auto; margin: 22px 0 24px; }
.prose table { width: 100%; margin: 22px 0 24px; border-collapse: collapse; font-size: 15px; }
.prose caption { caption-side: top; text-align: start; color: var(--muted); font-size: 13px; padding-bottom: 8px; }
.prose th, .prose td { padding: 9px 12px; border-bottom: 1px solid var(--line); text-align: start; }
.prose thead th { background: var(--blue-soft); border-bottom: 1px solid #c8d8f6; }
.prose code { padding: 1px 5px; background: #eef2f8; border-radius: 5px; font-size: 14px; }
.prose a { text-underline-offset: 3px; }
.prose hr { margin: 32px 0; border: 0; border-top: 1px solid var(--line); }
.article-note { max-width: 760px; margin: 34px auto 60px; padding: 14px 16px; color: var(--muted); background: var(--surface); border: 1px solid var(--line); border-radius: 12px; font-size: 13px; }
@media (max-width: 640px) { .prose p, .prose li { font-size: 16px; } .prose table { font-size: 13.5px; } }