/* ════════════════════════════════════════════════════════════════
   AgentMeasure — Precision Instrument design system
   Colors are data states, not decoration:
     green  = evidence / confirmed
     blue   = specification / structure
     yellow = unknown / partial
     red    = failure
   ════════════════════════════════════════════════════════════════ */

:root {
  --bg: #090C10;
  --panel: #10151B;
  --panel-2: #0C1116;
  --text: #F2F5F7;
  --secondary: #8B96A3;
  --border: #252D36;
  --border-soft: #1A212A;

  --ok: #6EF2A3;        /* evidence / confirmed */
  --spec: #76A5FF;      /* specification / structure */
  --warn: #F6C85F;      /* unknown / partial */
  --fail: #FF6B6B;      /* failure */

  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --wrap: 1120px;
  --radius: 10px;
}

/* ── reset ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* faint graph-paper grid — the instrument surface */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(242,245,247,0.016) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242,245,247,0.016) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

::selection { background: rgba(110,242,163,0.22); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
section { scroll-margin-top: 72px; }

/* ── typography helpers ────────────────────────────────────────── */
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--spec);
  margin-bottom: 20px;
}
.eyebrow::before { content: "— "; color: var(--border); }

h1 {
  font-size: clamp(2.5rem, 5.6vw, 4.3rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.025em;
  margin-bottom: 24px;
}
h1 em { font-style: normal; color: var(--ok); }
h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
h3 { font-size: 1.02rem; font-weight: 600; margin-bottom: 8px; letter-spacing: -0.01em; }

.lede { font-size: 1.13rem; color: var(--text); max-width: 34em; margin-bottom: 14px; }
.lede-sm { font-size: 1.12rem; line-height: 1.55; margin: 36px auto 0; text-align: center; max-width: 36em; }
.body-secondary { color: var(--secondary); max-width: 40em; font-size: 1.02rem; }
.note {
  font-size: 0.88rem;
  color: var(--secondary);
  max-width: 46em;
  margin-top: 22px;
  border-left: 2px solid var(--border);
  padding-left: 14px;
}
.note strong { color: var(--text); font-weight: 600; }
.note a { color: var(--spec); }
.note a:hover { text-decoration: underline; }

.mono-xs { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.04em; }
.mono-inline { font-family: var(--mono); font-size: 0.86em; }
.dim { color: var(--secondary); }
.ok { color: var(--ok); }
.warn { color: var(--warn); }
.x { color: var(--fail); }
.smaller { font-size: 0.85rem; }

/* ── skip link ─────────────────────────────────────────────────── */
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--panel); color: var(--text);
  padding: 10px 16px; z-index: 200; border: 1px solid var(--border);
}
.skip-link:focus { left: 12px; top: 12px; }

/* ── nav ───────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(9,12,16,0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-inner {
  max-width: var(--wrap); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 60px; padding: 0 24px; gap: 20px;
}
.brand {
  font-family: var(--mono);
  font-weight: 600; font-size: 15.5px; letter-spacing: -0.01em;
  white-space: nowrap;
}
.brand-cursor { color: var(--ok); animation: blink 1.15s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a {
  font-size: 13.5px; color: var(--secondary); font-weight: 500;
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); }
.nav-links a.active::after { content: "·"; color: var(--ok); margin-left: 4px; }
.nav-links .ext { font-family: var(--mono); font-size: 12.5px; }

.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--border);
  border-radius: 6px; padding: 8px 9px; cursor: pointer;
  flex-direction: column; gap: 4px;
}
.nav-toggle span { display: block; width: 16px; height: 1.5px; background: var(--text); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* ── buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 13.5px; font-weight: 500;
  padding: 12px 22px; border-radius: 7px;
  border: 1px solid var(--border);
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
  cursor: pointer;
}
.btn-primary {
  color: var(--ok); border-color: rgba(110,242,163,0.45);
  background: rgba(110,242,163,0.06);
}
.btn-primary:hover { background: rgba(110,242,163,0.14); border-color: var(--ok); }
.btn-ghost { color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--secondary); background: var(--panel); }
.btn-sm { padding: 8px 16px; font-size: 12.5px; }
.btn:focus-visible, a:focus-visible, button:focus-visible {
  outline: 2px solid var(--spec); outline-offset: 2px; border-radius: 4px;
}

.link-quiet {
  display: inline-block; margin-top: 26px;
  font-family: var(--mono); font-size: 12.5px; color: var(--secondary);
  transition: color 0.15s ease;
}
.link-quiet:hover { color: var(--spec); }

/* ── hero ──────────────────────────────────────────────────────── */
.hero {
  max-width: var(--wrap); margin: 0 auto;
  padding: 64px 24px 40px;
}
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 56px; align-items: center;
}
.hero-copy .body-secondary { margin-bottom: 8px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }

/* status strip */
.status-strip {
  margin-top: 56px;
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--panel-2); overflow: hidden;
}
.status {
  display: flex; flex-direction: column; gap: 5px;
  padding: 16px 20px;
  border-right: 1px solid var(--border-soft);
}
.status:last-child { border-right: none; }
.status-k {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--secondary);
}
.status-v { font-family: var(--mono); font-size: 14.5px; color: var(--text); }
.status-v.ok { color: var(--ok); }
.status-v.spec { color: var(--spec); }
.status-v.warn { color: var(--warn); }

/* ── measurement console ───────────────────────────────────────── */
.console, .terminal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(0,0,0,0.45), 0 0 0 1px rgba(242,245,247,0.015) inset;
}
.console-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 10px 14px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--border);
}
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--border); }
.console-bar .dot:nth-child(1) { background: #3A4650; }
.console-title {
  margin-left: 8px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  color: var(--secondary); text-transform: uppercase;
  flex: 1; text-align: left;
}
.console-replay {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--secondary); background: none; cursor: pointer;
  border: 1px solid var(--border); border-radius: 5px; padding: 3px 9px;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.console-replay:hover { color: var(--ok); border-color: rgba(110,242,163,0.4); }

.console-body {
  padding: 18px 22px 12px;
  font-family: var(--mono); font-size: 12.8px; line-height: 1.7;
}
/* fail-safe: content visible without JS; hidden only when JS is present */
.cline {
  display: flex; justify-content: space-between; gap: 18px;
  opacity: 1;
}
.js .cline {
  opacity: 0; transform: translateY(3px);
  transition: opacity 0.32s ease, transform 0.32s ease;
}
.cline.rule {
  min-height: 11px; margin: 3px 0;
  border-bottom: 1px dashed var(--border);
}
.k { color: var(--secondary); }
.v { color: var(--text); }
.num { color: var(--spec); }
.num.right, .right { margin-left: auto; text-align: right; }
.num-ok { color: var(--ok); }
.num-warn { color: var(--warn); }
.path { color: var(--text); }
.tag-failed { color: var(--fail); }
.tag-ok { color: var(--ok); }
.tag-unknown { color: var(--warn); }
.cursor-line { margin-top: 2px; min-height: 16px; }
.cursor { color: var(--ok); animation: blink 1.1s steps(1) infinite; }

.console-foot, .terminal .console-foot {
  display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: baseline;
  padding: 11px 16px;
  border-top: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
}
.console-foot .dim { font-size: 11px; }
/* instrument captions: the fact line renders uppercase; the caveat stays prose */
.console-foot > .mono-xs:first-child {
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── sections ──────────────────────────────────────────────────── */
.section { padding: 96px 24px; }
.section-panel {
  background: linear-gradient(180deg, rgba(16,21,27,0.65), rgba(16,21,27,0.25));
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}
.section-chain {
  background: radial-gradient(55% 60% at 50% 30%, rgba(118,165,255,0.045), transparent 70%);
}
.wrap { max-width: var(--wrap); margin: 0 auto; }
.wrap-narrow { max-width: 860px; margin: 0 auto; text-align: center; }
.wrap-narrow .eyebrow::before { content: none; }
.wrap-narrow > .eyebrow::after { content: " —"; color: var(--border); }
.wrap-narrow .lede-sm { margin-top: 18px; }
.wrap-narrow .note { margin-left: auto; margin-right: auto; text-align: left; }

/* ── inequalities ──────────────────────────────────────────────── */
.inequalities {
  margin: 50px 0 26px;
  display: flex; flex-direction: column; gap: 6px;
  align-items: flex-start;
}
.ineq {
  font-family: var(--mono);
  font-size: clamp(1.15rem, 2.6vw, 1.7rem);
  font-weight: 500;
  display: flex; align-items: baseline; gap: 16px;
  color: var(--text);
}
.ineq .neq { color: var(--fail); font-weight: 600; }
.ineq-final {
  font-size: clamp(1.35rem, 3.1vw, 2.05rem);
  margin-top: 26px; padding: 20px 26px;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--panel);
  width: fit-content;
}
.ineq-final .neq { font-size: 1.1em; }
.section .lede-sm strong { color: var(--ok); font-weight: 600; }
#why .lede-sm { margin-top: 44px; }

/* ── claims (visual moment: full-width ≠ statements) ───────────── */
.claims { margin-top: 56px; border-top: 1px solid var(--border); }
.claim {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 44px; align-items: center;
  padding: 46px 0;
  border-bottom: 1px solid var(--border);
}
.claim-no {
  font-family: var(--mono); font-size: 11px; color: var(--secondary);
  letter-spacing: 0.14em; display: block; margin-bottom: 14px;
}
.claim-no::after {
  content: ""; display: inline-block; width: 22px; height: 2px;
  background: var(--fail); margin-left: 10px; vertical-align: middle;
}
.claim-line {
  font-family: var(--sans);
  font-size: clamp(1.7rem, 3.9vw, 2.7rem);
  font-weight: 800; letter-spacing: -0.02em; line-height: 1.08;
  display: flex; flex-wrap: wrap; gap: 0 16px; align-items: baseline;
  margin-bottom: 16px;
}
.claim-line .neq-big {
  color: var(--fail);
  font-family: var(--mono); font-weight: 600;
  font-size: 0.85em;
}
.claim-cap { color: var(--secondary); font-size: 0.95rem; max-width: 30em; }
.claim-diagram {
  font-family: var(--mono); font-size: 13px; line-height: 1.8;
  background: var(--panel);
  border: 1px solid var(--border-soft); border-radius: 7px;
  padding: 18px 20px;
  display: flex; flex-direction: column; align-items: flex-start;
  justify-self: end;
  width: fit-content; max-width: 100%;
}
.dl { color: var(--text); }
.dl.hl { color: var(--ok); }
.dl .k2 { color: var(--secondary); margin-right: 10px; }
.dl.gap-line { display: flex; justify-content: space-between; width: 100%; gap: 12px; }

/* ── measurement chain (visual moment: calibration rail) ───────── */
.chain-label {
  text-align: center;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.32em;
  color: var(--secondary);
  margin: 58px 0 26px;
}
.chain-label::before, .chain-label::after { content: "━━━"; color: var(--border); margin: 0 14px; }
.chain {
  display: grid; grid-template-columns: repeat(5, 1fr);
}
.chain-col {
  display: flex; flex-direction: column; align-items: center;
  text-align: center; padding: 0 12px;
}
.chain-no {
  font-family: var(--mono); font-size: 11px; color: var(--secondary);
  letter-spacing: 0.14em; margin-bottom: 8px;
}
.chain-name {
  font-size: 1.35rem; font-weight: 700; letter-spacing: -0.015em;
}
.chain-rail {
  position: relative;
  width: 100%; height: 2px;
  background: var(--border);
  margin: 16px 0 18px;
}
/* bridge the column gap so the rail reads as one continuous chain */
.chain-col:not(:last-child) .chain-rail { margin-right: -12px; }
.chain-col:not(:first-child) .chain-rail { margin-left: -12px; }
.chain-rail::before {
  content: ""; position: absolute; left: 0; top: -3px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--border);
}
.r-ok::before { border-color: var(--ok); }
.r-partial::before { border-color: var(--warn); }
.r-draft::before { border-color: var(--spec); }
.r-ok { background: linear-gradient(90deg, var(--ok), rgba(110,242,163,0.25)); }
.r-partial { background: linear-gradient(90deg, var(--warn), rgba(246,200,95,0.25)); }
.r-draft { background: linear-gradient(90deg, var(--spec), rgba(118,165,255,0.25)); }
.chain-q { font-size: 0.84rem; color: var(--secondary); line-height: 1.45; min-height: 40px; }
.chain-status {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.13em;
  text-transform: uppercase; width: fit-content;
  padding: 3px 9px; border-radius: 4px; border: 1px solid;
  margin-top: 10px;
}
.st-ok { color: var(--ok); border-color: rgba(110,242,163,0.35); background: rgba(110,242,163,0.07); }
.st-partial { color: var(--warn); border-color: rgba(246,200,95,0.35); background: rgba(246,200,95,0.07); }
.st-draft { color: var(--spec); border-color: rgba(118,165,255,0.35); background: rgba(118,165,255,0.07); }
.chain-sub {
  font-family: var(--mono); font-size: 10.5px; line-height: 1.6;
  color: var(--secondary); margin-top: 10px; letter-spacing: 0.06em;
  text-transform: uppercase;
}
.chain-sub .warn { color: var(--warn); }

/* signature line */
.sig {
  margin: 52px auto 0; max-width: 640px;
  text-align: center;
  font-family: var(--mono); font-size: 13px; line-height: 1.7;
  color: var(--secondary);
  border: 1px dashed rgba(110,242,163,0.28);
  border-radius: var(--radius);
  padding: 18px 24px;
  background: rgba(110,242,163,0.03);
}
.sig strong { color: var(--ok); font-weight: 600; letter-spacing: 0.01em; }
.sig a { color: var(--spec); }
.sig a:hover { text-decoration: underline; }

/* ── how it works / architecture ───────────────────────────────── */
.how-grid {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 54px; margin-top: 52px; align-items: start;
}
.arch {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  display: flex; flex-direction: column; align-items: center;
}
.arch-node {
  width: 100%; max-width: 340px;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--panel);
  padding: 13px 18px;
  display: flex; flex-direction: column; gap: 3px; align-items: center;
  text-align: center;
}
.arch-k {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--text); font-weight: 600;
}
.arch-sub { font-size: 11px; color: var(--secondary); font-family: var(--mono); letter-spacing: 0.03em; }
.arch-provider { border-color: var(--spec); }
.arch-rows { width: 100%; margin-top: 10px; display: flex; flex-direction: column; gap: 7px; }
.arch-row {
  font-family: var(--mono); font-size: 12px; color: var(--secondary);
  border: 1px dashed var(--border); border-radius: 6px; padding: 7px 10px;
}
.arch-sdk {
  color: var(--ok); border: 1px solid rgba(110,242,163,0.4);
  background: rgba(110,242,163,0.05);
}
.arch-collector { border-style: dashed; }
.arch-hosted { border-style: dashed; opacity: 0.75; }
.arch-arrow {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 2px 0;
}
.arch-line { width: 1px; height: 14px; background: var(--border); }
.arch-label {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em;
  color: var(--secondary); text-transform: uppercase;
  padding: 1px 8px;
}
.arch-head { color: var(--border); font-size: 9px; line-height: 1; }
.arch-split { width: 100%; max-width: 340px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.arch-branch { display: flex; flex-direction: column; align-items: center; }
.arch-branch .arch-node { max-width: none; }

.how-facts { display: flex; flex-direction: column; gap: 22px; }
.fact-item { display: flex; gap: 16px; align-items: flex-start; }
.fact-no {
  font-family: var(--mono); font-size: 11px; color: var(--spec);
  letter-spacing: 0.1em; padding-top: 4px;
}
.fact-item p { font-size: 0.88rem; color: var(--secondary); }

/* ── available today / spec sheet ──────────────────────────────── */
.specsheet {
  margin-top: 50px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}
.spec-row {
  display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.3fr) auto;
  gap: 18px; align-items: baseline;
  padding: 15px 22px;
  border-bottom: 1px solid var(--border-soft);
}
.spec-row:last-child { border-bottom: none; }
.spec-row:hover { background: rgba(110,242,163,0.025); }
.spec-k { font-size: 0.95rem; font-weight: 600; }
.spec-mono {
  font-family: var(--mono); font-size: 12px; color: var(--secondary);
  letter-spacing: 0.02em;
}
.spec-v {
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  text-align: right;
}
.spec-v.ok { color: var(--ok); }
.spec-v.spec { color: var(--spec); }
.spec-v.warn { color: var(--warn); }
.spec-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.chip {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--secondary);
  border: 1px solid var(--border); border-radius: 999px;
  padding: 6px 14px;
}
.chip::before { content: "✓ "; color: var(--ok); }

/* ── terminal / try ────────────────────────────────────────────── */
.try-grid {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 48px; margin-top: 52px; align-items: start;
}
.terminal-body {
  padding: 20px 22px;
  font-family: var(--mono); font-size: 12.8px; line-height: 1.85;
}
.tl { color: var(--text); }
.tl .prompt { color: var(--ok); margin-right: 10px; }
.tl.out { color: var(--secondary); }
.tl.gap { min-height: 10px; }
.try-proofs h3 { margin-bottom: 18px; }
.proofs { list-style: none; display: flex; flex-direction: column; gap: 13px; margin-bottom: 28px; }
.proofs li {
  display: flex; gap: 12px; align-items: baseline;
  font-size: 0.94rem; color: var(--text);
  padding-bottom: 13px; border-bottom: 1px solid var(--border-soft);
}
.proofs .ok { font-size: 9px; }

/* ── lab (compressed) ──────────────────────────────────────────── */
.lab-grid {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 22px;
  align-items: stretch; margin-top: 54px;
}
.lab-card {
  background: var(--panel);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 28px;
  display: flex; flex-direction: column; gap: 8px;
}
.lab-card-hi { border-color: rgba(110,242,163,0.4); background: linear-gradient(180deg, rgba(110,242,163,0.05), var(--panel)); }
.lab-k {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--secondary);
}
.lab-card-hi .lab-k { color: var(--ok); }
.lab-q { font-size: 1.3rem; font-weight: 700; letter-spacing: -0.015em; }
.lab-sub { font-size: 0.85rem; color: var(--secondary); }
.lab-arrow {
  display: flex; align-items: center;
  font-family: var(--mono); color: var(--border); font-size: 1.6rem;
}

/* ── runtime matrix ────────────────────────────────────────────── */
.matrix-wrap {
  margin-top: 52px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.matrix {
  width: 100%; min-width: 680px;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden;
  font-variant-numeric: tabular-nums;
}
.matrix th, .matrix td { padding: 15px 18px; text-align: center; }
.matrix thead th {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--secondary); font-weight: 500;
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
}
.matrix .matrix-runtime, .matrix tbody th { text-align: left; }
.matrix tbody th {
  font-size: 0.95rem; font-weight: 600; white-space: nowrap;
}
.matrix tbody tr { border-bottom: 1px solid var(--border-soft); }
.matrix tbody tr:last-child { border-bottom: none; }
.matrix tbody tr:hover { background: rgba(118,165,255,0.035); }
.matrix td { font-size: 15px; }
.dot-full { color: var(--ok); }
.dot-part { color: var(--warn); }
.dot-none { color: #3E4A56; }
.matrix-legend {
  display: flex; flex-wrap: wrap; gap: 8px 26px;
  margin-top: 16px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--secondary);
}
.matrix-legend span { display: inline-flex; gap: 8px; align-items: baseline; }

/* ── economy / long-term thesis ────────────────────────────────── */
.econ-grid {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 20px;
  margin-top: 54px;
}
.econ {
  background: var(--panel);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 26px;
  display: flex; flex-direction: column; gap: 18px;
}
.econ-hi { border-color: rgba(118,165,255,0.45); }
.econ-k {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--secondary);
}
.econ-hi .econ-k { color: var(--spec); }
.econ-chain {
  display: flex; flex-direction: column; gap: 4px;
  font-size: 0.98rem;
}
.econ-chain span { color: var(--text); }
.econ-chain .dim { color: var(--border); font-size: 0.8rem; }
.econ-unit {
  font-family: var(--mono); font-size: 0.9rem; color: var(--ok);
  margin-top: 6px;
}
.econ-hi .econ-unit { color: var(--spec); }

/* ── trial CTA ─────────────────────────────────────────────────── */
.trial {
  background:
    radial-gradient(60% 90% at 50% 110%, rgba(110,242,163,0.06), transparent 70%),
    var(--bg);
}
.trial-points {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  margin: 46px 0; text-align: left;
}
.trial-point {
  background: var(--panel);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px 20px;
  display: flex; flex-direction: column; gap: 12px;
}
.trial-k {
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ok);
}
.trial-point p { font-size: 0.95rem; line-height: 1.5; }
.trial-actions {
  display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 10px;
}
.trial .link-quiet { display: block; text-align: center; }
.trial .note { text-align: center; border-left: none; padding-left: 0; margin-left: auto; margin-right: auto; }
.trial-links {
  display: flex; flex-wrap: wrap; gap: 6px 12px; justify-content: center;
  margin-top: 16px; color: var(--secondary);
}
.trial-links .link-quiet { display: inline; }
.evidence-card {
  margin: 42px auto 0; max-width: 46em; text-align: left;
  padding: 20px 24px;
  border: 1px solid var(--border); border-left: 3px solid var(--ok);
  border-radius: var(--radius);
  background: rgba(110,242,163,0.03);
}
.evidence-k {
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ok); margin-bottom: 10px;
}
.evidence-line { font-size: 0.92rem; line-height: 1.6; color: var(--secondary); }
.evidence-line strong { color: var(--text); font-weight: 600; }
.evidence-line a { color: var(--spec); }
.evidence-line a:hover { text-decoration: underline; }
.trial-what {
  margin: 30px auto 0; max-width: 40em;
  font-size: 0.98rem; line-height: 1.55; color: var(--secondary);
}
.trial-what strong { color: var(--text); font-weight: 600; }

/* ── who pays for this (scenario cards in #why) ────────────────── */
.who-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  margin-top: 46px; text-align: left;
}
.who-card {
  background: var(--panel);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px 20px;
  display: flex; flex-direction: column; gap: 10px;
}
.who-k {
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--spec);
}
.who-card p { font-size: 0.9rem; color: var(--secondary); line-height: 1.5; }
.who-v {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.02em;
  color: var(--ok); margin-top: auto;
}
.who-v::before { content: "→ "; opacity: 0.7; }

/* ── category definition (telemetry vs semantics) ─────────────── */
.telemetry-sig {
  margin-top: 54px; padding: 26px 30px;
  border: 1px solid var(--border); border-left: 3px solid var(--ok);
  border-radius: var(--radius);
  background: rgba(110,242,163,0.03);
}
.telemetry-line {
  font-size: 1.45rem; font-weight: 600; letter-spacing: -0.01em;
  line-height: 1.35; color: var(--text);
}
.telemetry-line strong { color: var(--ok); }
.telemetry-sig .note { margin-top: 10px; border-left: none; padding-left: 0; }

/* ── footer ────────────────────────────────────────────────────── */
.footer { border-top: 1px solid var(--border); background: var(--panel-2); padding: 64px 24px 36px; }
.footer-grid {
  max-width: var(--wrap); margin: 0 auto;
  display: grid; grid-template-columns: 1.6fr repeat(4, 1fr); gap: 32px;
}
.footer-brand p { font-size: 0.88rem; color: var(--secondary); margin-top: 10px; }
.footer-col { display: flex; flex-direction: column; gap: 9px; }
.footer-k {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--secondary); margin-bottom: 5px;
}
.footer-col a { font-size: 0.88rem; color: var(--secondary); transition: color 0.15s ease; }
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  max-width: var(--wrap); margin: 52px auto 0; padding-top: 26px;
  border-top: 1px solid var(--border-soft);
  display: flex; flex-wrap: wrap; gap: 10px 40px; justify-content: space-between;
  font-size: 0.82rem; color: var(--secondary);
}
.footer-epigraph { font-style: italic; max-width: 46em; }

/* ── reveal animations ─────────────────────────────────────────── */
.reveal {
  opacity: 0; transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in { opacity: 1; transform: none; }
.d1 { transition-delay: 0.08s; }
.d2 { transition-delay: 0.16s; }
.d3 { transition-delay: 0.24s; }
.d4 { transition-delay: 0.32s; }
.d5 { transition-delay: 0.40s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}
/* no-JS fallback: everything visible */
html:not(.js) .reveal { opacity: 1; transform: none; }

/* ── responsive ────────────────────────────────────────────────── */
@media (max-width: 1020px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .claim { grid-template-columns: 1fr; gap: 24px; }
  .claim-diagram { justify-self: start; }
  .chain { grid-template-columns: 1fr; gap: 8px; }
  .chain-rail, .chain-label { display: none; }
  .chain-col {
    flex-direction: row; flex-wrap: wrap; align-items: baseline;
    text-align: left; gap: 4px 14px; padding: 14px 0;
    border-bottom: 1px solid var(--border-soft);
  }
  .chain-col:first-child { border-top: 1px solid var(--border-soft); }
  .chain-no { margin-bottom: 0; }
  .chain-name { font-size: 1.15rem; }
  .chain-q { min-height: 0; flex-basis: 100%; }
  .chain-sub { margin-top: 4px; flex-basis: 100%; }
  .how-grid, .try-grid { grid-template-columns: 1fr; gap: 36px; }
  .econ-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 820px) {
  .nav-links {
    position: absolute; top: 60px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--border);
    display: none; padding: 8px 24px 16px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 11px 0; width: 100%; border-bottom: 1px solid var(--border-soft); }
  .nav-links a.ext { border-bottom: none; }
  .nav-toggle { display: flex; }
  .status-strip { grid-template-columns: 1fr 1fr; }
  .status:nth-child(2) { border-right: none; }
  .status:nth-child(-n+2) { border-bottom: 1px solid var(--border-soft); }
  .lab-grid { grid-template-columns: 1fr; }
  .lab-arrow { transform: rotate(90deg); justify-content: center; }
  .trial-points { grid-template-columns: 1fr; }
  .who-grid { grid-template-columns: 1fr; }
  .section { padding: 76px 24px; }
  .ineq { font-size: 1.05rem; }
  .ineq-final { padding: 16px 18px; font-size: 1.15rem; }
  .spec-row { grid-template-columns: 1fr auto; }
  .spec-mono { display: none; }
  .footer-bottom { flex-direction: column; gap: 14px; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .claim-line { font-size: 1.55rem; }
}