:root {
  --ink: #0b2a34;
  --ink-soft: #39545c;
  --paper: #f6f1e8;
  --paper-deep: #ece4d7;
  --card: #fffdf8;
  --teal: #087c70;
  --teal-bright: #20a792;
  --teal-pale: #dcefe9;
  --coral: #ef6d51;
  --coral-pale: #ffe5db;
  --ochre: #9a5c16;
  --line: rgba(11, 42, 52, .14);
  --shadow: 0 24px 70px rgba(11, 42, 52, .12);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 14px;
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at 92% 8%, rgba(32, 167, 146, .11), transparent 24rem),
    radial-gradient(circle at 8% 42%, rgba(239, 109, 81, .08), transparent 28rem),
    var(--paper);
  font: 15px/1.5 var(--sans);
}

button, input, select { font: inherit; }
button { color: inherit; }
a { color: inherit; }

.skip-link {
  position: fixed;
  z-index: 100;
  left: 1rem;
  top: 1rem;
  padding: .7rem 1rem;
  border-radius: 999px;
  color: #fff;
  background: var(--ink);
  transform: translateY(-200%);
}
.skip-link:focus { transform: translateY(0); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 76px;
  padding: 0 clamp(1rem, 3vw, 3.5rem);
  border-bottom: 1px solid rgba(255, 255, 255, .14);
  color: #fff;
  background: rgba(11, 42, 52, .96);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  width: fit-content;
  text-decoration: none;
}
.brand strong { display: block; font: 700 1.1rem/1 var(--serif); letter-spacing: .08em; }
.brand small { display: block; margin-top: .2rem; color: #a8dcd2; font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; }
.brand-mark { position: relative; display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid rgba(255,255,255,.4); border-radius: 50%; }
.brand-mark i { position: absolute; width: 16px; height: 2px; border-radius: 2px; background: var(--coral); }
.brand-mark i:first-child { transform: rotate(60deg); }
.brand-mark i:last-child { transform: rotate(-60deg); }

.topbar-status { display: flex; align-items: center; gap: .65rem; color: rgba(255,255,255,.72); font-size: .8rem; }
.signal { display: inline-flex; align-items: center; gap: .35rem; padding: .35rem .7rem; border: 1px solid currentColor; border-radius: 999px; font-size: .69rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.signal::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 0 4px rgba(255,255,255,.08); }
.signal-private { color: #fed6c7; }

.icon-button {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .58rem .9rem;
  border: 1px solid rgba(255,255,255,.24);
  border-radius: 999px;
  color: #fff;
  background: transparent;
  cursor: pointer;
}
.icon-button:hover { background: rgba(255,255,255,.08); }

main { width: min(1600px, 100%); margin: auto; }

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(360px, .9fr);
  gap: clamp(2rem, 6vw, 7rem);
  min-height: 510px;
  padding: clamp(4rem, 8vw, 8.5rem) clamp(1.2rem, 6vw, 7rem) 4rem;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  width: 440px;
  height: 440px;
  right: -160px;
  top: 38px;
  border: 1px solid rgba(8,124,112,.18);
  border-radius: 50%;
  box-shadow: inset 0 0 0 70px var(--paper), inset 0 0 0 72px rgba(8,124,112,.12);
  pointer-events: none;
}
.hero-copy { align-self: center; position: relative; z-index: 1; }
.eyebrow { margin: 0 0 .65rem; color: var(--teal); font-size: .72rem; font-weight: 850; letter-spacing: .17em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 850px; margin-bottom: 1.4rem; font: 500 clamp(3.2rem, 6vw, 6.8rem)/.92 var(--serif); letter-spacing: -.055em; }
h1 em { color: var(--teal); font-weight: 400; }
.hero-lede { max-width: 670px; margin-bottom: 0; color: var(--ink-soft); font-size: clamp(1rem, 1.5vw, 1.25rem); }

.convention-switch { align-self: center; position: relative; z-index: 2; display: grid; gap: .85rem; }
.convention-card {
  position: relative;
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 0 1rem;
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  text-align: left;
  background: rgba(255,253,248,.72);
  box-shadow: 0 8px 30px rgba(11,42,52,.05);
  cursor: pointer;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.convention-card:hover { transform: translateX(-5px); border-color: rgba(8,124,112,.42); }
.convention-card.is-active { color: #fff; border-color: var(--ink); background: var(--ink); box-shadow: 0 20px 45px rgba(11,42,52,.18); }
.convention-number { grid-row: span 2; align-self: center; font: 700 1.45rem/1 var(--serif); }
.convention-name { font-weight: 800; }
.convention-meta { margin-top: .2rem; color: var(--ink-soft); font-size: .78rem; }
.convention-card.is-active .convention-meta { color: #9dd6cc; }
.convention-card.is-active::after { content: ""; position: absolute; right: 1rem; top: 50%; width: 9px; height: 9px; border-radius: 50%; background: var(--coral); transform: translateY(-50%); box-shadow: 0 0 0 5px rgba(239,109,81,.15); }

.hero-meter { position: absolute; left: clamp(1.2rem, 6vw, 7rem); bottom: 1.3rem; display: flex; align-items: flex-end; gap: 1.2rem; z-index: 2; }
.meter-copy { display: grid; grid-template-columns: auto auto; gap: 0 .55rem; align-items: baseline; min-width: 215px; }
.meter-copy > span:first-child { grid-column: 1/-1; color: var(--ink-soft); font-size: .7rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.meter-copy strong { font: 600 1.9rem/1 var(--serif); }
.meter-copy > span:last-child { color: var(--ink-soft); font-size: .78rem; }
.meter-track { width: min(260px, 28vw); height: 4px; margin-bottom: .55rem; border-radius: 4px; background: rgba(11,42,52,.12); overflow: hidden; }
.meter-track i { display: block; width: 0; height: 100%; background: linear-gradient(90deg,var(--teal),var(--teal-bright)); transition: width .4s ease; }

.topic-section { padding: 2.4rem clamp(1.2rem, 4vw, 4.5rem) 3rem; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,253,248,.55); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1.25rem; }
.section-heading h2, .panel-heading h2 { margin: 0; font: 600 1.55rem/1.1 var(--serif); }
.topic-legend { display: flex; flex-wrap: wrap; gap: 1rem; color: var(--ink-soft); font-size: .75rem; }
.topic-legend span { display: inline-flex; align-items: center; gap: .35rem; }
.dot { width: 7px; height: 7px; border-radius: 50%; }
.dot-release { background: var(--teal); }
.dot-review { background: var(--ochre); }
.dot-unknown { background: var(--coral); }
.topic-rail { display: flex; gap: .6rem; overflow-x: auto; padding: .2rem .15rem .8rem; scrollbar-color: var(--teal) transparent; scroll-snap-type: x proximity; }
.topic-button { flex: 0 0 auto; display: inline-flex; align-items: center; gap: .55rem; min-height: 42px; padding: .65rem .9rem; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-soft); background: var(--card); cursor: pointer; scroll-snap-align: start; }
.topic-button::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--coral); }
.topic-button[data-state="RELEASED"]::before { background: var(--teal); }
.topic-button.is-active { color: #fff; border-color: var(--ink); background: var(--ink); }

.lab-grid { display: grid; grid-template-columns: minmax(280px, .83fr) minmax(420px, 1.35fr) minmax(280px, .8fr); gap: 1rem; padding: 1.4rem clamp(1rem, 2vw, 2.4rem) 4rem; }
.scenario-panel, .result-panel, .proof-panel { min-width: 0; border: 1px solid var(--line); border-radius: var(--radius-xl); background: var(--card); box-shadow: 0 16px 50px rgba(11,42,52,.06); }
.scenario-panel, .proof-panel { padding: 1.35rem; }
.result-panel { overflow: hidden; }
.panel-heading { display: flex; align-items: center; gap: .8rem; padding-bottom: 1.15rem; border-bottom: 1px solid var(--line); }
.result-heading { padding: 1.35rem 1.5rem 1.15rem; }
.panel-heading .eyebrow { margin-bottom: .2rem; }
.panel-step { display: grid; place-items: center; flex: 0 0 36px; width: 36px; height: 36px; color: var(--teal); border: 1px solid rgba(8,124,112,.28); border-radius: 50%; font-size: .7rem; font-weight: 850; }

#scenario-form { display: grid; gap: 1.2rem; padding-top: 1.2rem; }
.field { display: grid; gap: .4rem; }
.field > span, .field-title label { color: var(--ink-soft); font-size: .74rem; font-weight: 760; letter-spacing: .02em; }
input[type="date"], select, .number-box { width: 100%; min-height: 43px; border: 1px solid var(--line); border-radius: 11px; color: var(--ink); background: #fff; }
input[type="date"], select { padding: .65rem .72rem; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
.range-field { display: grid; gap: .45rem; padding: .9rem; border: 1px solid rgba(11,42,52,.09); border-radius: var(--radius-md); background: #faf7f1; }
.field-title { display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; }
.field-title output { color: var(--teal); font: 700 1rem/1 var(--serif); }
.range-footer { display: grid; grid-template-columns: auto minmax(90px,1fr) auto; align-items: center; gap: .55rem; color: var(--ink-soft); font-size: .68rem; }
.number-box { display: flex; align-items: center; padding: 0 .55rem; min-height: 36px; }
.number-box input { min-width: 0; width: 100%; border: 0; outline: 0; color: var(--ink); background: transparent; text-align: right; }
.number-box span { margin-left: .25rem; white-space: nowrap; }
.range-field small { color: var(--ink-soft); font-size: .68rem; }
input[type="range"] { width: 100%; height: 24px; margin: 0; accent-color: var(--teal); cursor: ew-resize; }

.result-state { margin-left: auto; padding: .4rem .68rem; border-radius: 999px; color: var(--ochre); background: #f7e9cf; font-size: .68rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.result-state[data-state="SUPPORTED"] { color: #fff; background: var(--teal); }
.result-main { position: relative; min-height: 420px; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 3rem clamp(1.5rem,4vw,4.5rem); text-align: center; overflow: hidden; }
.result-main::before { content: ""; position: absolute; inset: 1.5rem; border: 1px solid rgba(8,124,112,.09); border-radius: 50%; transform: scaleX(1.4); pointer-events: none; }
.result-orbit { position: relative; width: 112px; height: 112px; margin-bottom: 1.6rem; border: 1px solid rgba(239,109,81,.34); border-radius: 50%; }
.result-orbit::before, .result-orbit::after { content: ""; position: absolute; inset: 17px; border: 1px solid rgba(8,124,112,.25); border-radius: 50%; }
.result-orbit::after { inset: 39px; background: var(--coral); border: 0; box-shadow: 0 0 0 10px var(--coral-pale); }
.result-orbit span, .result-orbit i { position: absolute; width: 9px; height: 9px; border-radius: 50%; background: var(--teal); }
.result-orbit span { left: -4px; top: 48px; }
.result-orbit i { right: 9px; top: 14px; }
.result-topic { position: relative; margin-bottom: .45rem; color: var(--teal); font-size: .74rem; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.result-main h3 { position: relative; max-width: 660px; margin-bottom: .9rem; font: 500 clamp(1.8rem,3vw,3.2rem)/1.04 var(--serif); letter-spacing: -.035em; }
.result-main > p:not(.result-topic) { position: relative; max-width: 630px; color: var(--ink-soft); }
.result-value { position: relative; display: flex; align-items: baseline; gap: .5rem; margin: 1rem 0; }
.result-value strong { color: var(--teal); font: 650 3rem/1 var(--serif); }
.result-value span { color: var(--ink-soft); }
.reason-list { position: relative; display: flex; flex-wrap: wrap; justify-content: center; gap: .45rem; margin-top: 1rem; }
.reason-chip { padding: .4rem .6rem; border: 1px solid rgba(154,92,22,.2); border-radius: 999px; color: var(--ochre); background: #fbf0dc; font-size: .66rem; font-weight: 760; }

.decision-strip { display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #f9f5ee; }
.decision-strip div { min-width: 0; padding: 1rem; border-right: 1px solid var(--line); }
.decision-strip div:last-child { border-right: 0; }
.decision-strip span { display: block; color: var(--ink-soft); font-size: .67rem; text-transform: uppercase; letter-spacing: .08em; }
.decision-strip strong { display: block; margin-top: .25rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .78rem; }
.truth-note { display: flex; align-items: flex-start; gap: .8rem; margin: 1.25rem; padding: 1rem; border-radius: var(--radius-md); background: var(--teal-pale); }
.truth-note > span { display: grid; place-items: center; flex: 0 0 25px; width: 25px; height: 25px; color: #fff; border-radius: 50%; background: var(--teal); font-weight: 900; }
.truth-note p { margin: 0; color: var(--ink-soft); font-size: .78rem; }
.truth-note strong { color: var(--ink); }

.proof-summary { display: flex; gap: .8rem; align-items: center; margin: 1.2rem 0; }
.proof-monogram { display: grid; place-items: center; flex: 0 0 50px; height: 50px; border-radius: 15px; color: #fff; background: var(--teal); font: 700 .85rem/1 var(--serif); }
.proof-summary strong, .proof-summary span { display: block; }
.proof-summary strong { line-height: 1.2; }
.proof-summary span { margin-top: .2rem; color: var(--ink-soft); font-size: .72rem; }
.proof-metrics { display: grid; grid-template-columns: 1fr 1fr; margin: 0; border: 1px solid var(--line); border-radius: var(--radius-md); overflow: hidden; }
.proof-metrics div { padding: .8rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.proof-metrics div:nth-child(even) { border-right: 0; }
.proof-metrics div:nth-last-child(-n+2) { border-bottom: 0; }
.proof-metrics dt { color: var(--ink-soft); font-size: .65rem; }
.proof-metrics dd { margin: .2rem 0 0; font: 700 1.25rem/1 var(--serif); }
.proof-list-wrap { margin-top: 1.25rem; }
.proof-list-heading { display: flex; align-items: center; justify-content: space-between; }
.proof-list-heading h3 { margin: 0; font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; }
.proof-list-heading span { display: grid; place-items: center; min-width: 27px; height: 27px; border-radius: 50%; color: #fff; background: var(--ink); font-size: .68rem; }
.proof-list { display: grid; gap: .55rem; max-height: 390px; margin: .8rem 0 0; padding: 0; overflow-y: auto; list-style: none; }
.proof-list a { display: grid; grid-template-columns: 26px 1fr; gap: .55rem; padding: .7rem; border: 1px solid var(--line); border-radius: 12px; text-decoration: none; }
.proof-list a:hover { border-color: var(--teal); background: var(--teal-pale); }
.proof-index { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; color: var(--teal); background: var(--teal-pale); font-size: .66rem; font-weight: 850; }
.proof-link-copy { min-width: 0; }
.proof-link-copy strong, .proof-link-copy span { display: block; overflow: hidden; text-overflow: ellipsis; }
.proof-link-copy strong { font-size: .72rem; white-space: nowrap; }
.proof-link-copy span { color: var(--ink-soft); font-size: .65rem; }
.technical-details { margin-top: 1rem; border-top: 1px solid var(--line); }
.technical-details summary { padding: .9rem 0; cursor: pointer; font-size: .75rem; font-weight: 800; }
.technical-details dl { display: grid; gap: .55rem; margin: 0; }
.technical-details dl div { min-width: 0; }
.technical-details dt { color: var(--ink-soft); font-size: .63rem; text-transform: uppercase; }
.technical-details dd { margin: .1rem 0 0; font-size: .68rem; overflow-wrap: anywhere; }
code { font-family: "SFMono-Regular", Consolas, monospace; }

.coverage-band { margin: 0 clamp(1rem, 4vw, 4rem) 4rem; padding: clamp(1.6rem,3vw,3rem); display: grid; grid-template-columns: 1fr 1.2fr auto; gap: 2rem; align-items: center; color: #fff; border-radius: var(--radius-xl); background: var(--ink); box-shadow: var(--shadow); }
.coverage-band h2 { margin: 0; color: #fff; font: 500 clamp(1.6rem,3vw,2.7rem)/1 var(--serif); }
.coverage-band > p { margin: 0; color: rgba(255,255,255,.7); }
.coverage-numbers { display: flex; gap: 1.3rem; }
.coverage-numbers span { color: rgba(255,255,255,.62); font-size: .7rem; white-space: nowrap; }
.coverage-numbers strong { display: block; color: #fff; font: 650 1.8rem/1 var(--serif); }

.fatal { position: fixed; z-index: 50; inset: auto 1rem 1rem; max-width: 520px; margin: auto; padding: 1rem 1.2rem; border: 1px solid #bc3e2c; border-radius: var(--radius-md); color: #fff; background: #70281f; box-shadow: var(--shadow); }
.fatal p { margin: .25rem 0 0; }
footer { display: flex; justify-content: space-between; gap: 1rem; padding: 1.2rem clamp(1rem,4vw,4rem); color: var(--ink-soft); border-top: 1px solid var(--line); font-size: .7rem; }
[hidden] { display: none !important; }

:focus-visible { outline: 3px solid var(--coral); outline-offset: 3px; }

@media (max-width: 1160px) {
  .lab-grid { grid-template-columns: minmax(280px,.8fr) minmax(430px,1.2fr); }
  .proof-panel { grid-column: 1/-1; }
  .proof-panel { display: grid; grid-template-columns: 1.2fr 1fr; gap: 1rem; }
  .proof-panel > .panel-heading { grid-column: 1/-1; }
  .proof-list-wrap { grid-row: span 3; }
}

@media (max-width: 820px) {
  .topbar { grid-template-columns: 1fr auto; }
  .topbar-status { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 4rem; }
  .hero::after { opacity: .45; }
  .hero-meter { position: static; grid-column: 1; margin-top: -1rem; }
  .lab-grid { grid-template-columns: 1fr; }
  .proof-panel { grid-column: auto; display: block; }
  .proof-list-wrap { grid-row: auto; }
  .coverage-band { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .topbar { min-height: 64px; }
  .icon-button span:last-child { display: none; }
  .hero { padding-inline: 1rem; }
  h1 { font-size: 3rem; }
  .convention-card { grid-template-columns: 60px 1fr; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .topic-legend { font-size: .67rem; }
  .lab-grid { padding-inline: .65rem; }
  .field-grid { grid-template-columns: 1fr; }
  .decision-strip { grid-template-columns: 1fr 1fr; }
  .decision-strip div:nth-child(2) { border-right: 0; }
  .decision-strip div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .coverage-numbers { justify-content: space-between; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}