:root {
  --bg: #06080b;
  --bg-2: #0b0f14;
  --panel: #0e131a;
  --panel-2: #121923;
  --line: #1c2633;
  --line-2: #273445;
  --text: #e7edf3;
  --muted: #8a98a8;
  --dim: #5d6b7b;
  --pqc: #6ef2c4;
  --pqc-ink: #03130d;
  --epi: #a78bfa;
  --epi-ink: #10072a;
  --crit: #ff5d63;
  --warn: #ffb547;
  --ok: #6ef2c4;
  --radius: 14px;
  --font: "Space Grotesk", system-ui, -apple-system, Segoe UI, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; }
code, .mono { font-family: var(--mono); font-size: .86em; }
code { background: rgba(255,255,255,.06); border: 1px solid var(--line); padding: .08em .38em; border-radius: 6px; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -.02em; margin: 0; }
h2 { font-size: clamp(30px, 4.4vw, 50px); font-weight: 600; margin-bottom: 28px; text-wrap: balance; }
h2 em { font-style: normal; color: var(--muted); }
.h2-sm { font-size: clamp(24px, 3vw, 34px); margin-bottom: 14px; }
h3 { font-size: 20px; font-weight: 600; }
p { margin: 0; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .wrap { padding: 0 16px; } body { font-size: 16px; } }

/* background */
.bg-grid {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
}
.bg-glow {
  position: fixed; z-index: -1; pointer-events: none;
  width: 1100px; height: 700px; left: 50%; top: -360px; transform: translateX(-50%);
  background:
    radial-gradient(closest-side, rgba(110,242,196,.16), transparent 70%) -200px 0 / 800px 700px no-repeat,
    radial-gradient(closest-side, rgba(167,139,250,.16), transparent 70%) 400px 60px / 800px 700px no-repeat;
  filter: blur(10px);
}

/* nav */
.nav { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(14px) saturate(140%); background: rgba(6,8,11,.72); border-bottom: 1px solid rgba(255,255,255,.06); }
.nav-inner { display: flex; align-items: center; gap: 28px; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 19px; letter-spacing: -.02em; color: var(--text); }
.logo svg { color: var(--pqc); }
.logo-sm { font-size: 16px; }
.nav-links { display: flex; gap: 24px; margin-left: auto; }
.nav-links a { text-decoration: none; color: var(--muted); font-size: 15px; transition: color .15s; }
.nav-links a:hover { color: var(--text); }
@media (max-width: 760px) { .nav-links { display: none; } .nav-inner .btn-sm { margin-left: auto; } }

/* buttons */
.btn {
  --b: var(--pqc); --ink: var(--pqc-ink);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 22px; border-radius: 10px; border: 1px solid var(--b);
  background: var(--b); color: var(--ink); font: 600 15px/1 var(--font);
  text-decoration: none; cursor: pointer; transition: transform .15s, box-shadow .2s, background .2s;
  box-shadow: 0 0 0 0 transparent;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 30px -8px var(--b); }
.btn:focus-visible, a:focus-visible, button:focus-visible { outline: 2px solid var(--pqc); outline-offset: 3px; }
.btn-alt { --b: var(--epi); --ink: var(--epi-ink); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--muted); box-shadow: none; }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.btn-block { width: 100%; margin-top: auto; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.cta-row.center { justify-content: center; }

/* hero */
.hero { padding: 88px 0 72px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 980px) { .hero-grid { grid-template-columns: 1fr; gap: 44px; } .hero { padding-top: 56px; } }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font: 500 13px/1 var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 26px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.02); }
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--pqc); box-shadow: 0 0 0 0 rgba(110,242,196,.6); animation: pulse 2.2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 9px rgba(110,242,196,0); } 100% { box-shadow: 0 0 0 0 rgba(110,242,196,0); } }
h1 { font-size: clamp(42px, 6.6vw, 80px); font-weight: 700; letter-spacing: -.035em; line-height: 1.02; }
.hl { background: linear-gradient(100deg, var(--pqc) 10%, #9ad7ff 50%, var(--epi) 90%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { margin-top: 26px; font-size: 18.5px; color: #b7c3cf; max-width: 600px; }
.lede strong { color: var(--text); }
.hero-facts { list-style: none; padding: 0; margin: 34px 0 0; display: grid; gap: 8px; color: var(--muted); font-size: 15px; }
.hero-facts li::before { content: "→ "; color: var(--pqc); font-family: var(--mono); }
.hero-facts strong { color: var(--text); font-weight: 600; }

/* terminal */
.terminal { background: linear-gradient(180deg, #0c1117, #080b0f); border: 1px solid var(--line-2); border-radius: var(--radius); box-shadow: 0 40px 120px -30px rgba(0,0,0,.9), 0 0 0 1px rgba(255,255,255,.02) inset, 0 0 80px -30px rgba(110,242,196,.25); overflow: hidden; min-width: 0; }
.term-bar { display: flex; align-items: center; gap: 7px; padding: 12px 14px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.02); }
.term-bar i { width: 11px; height: 11px; border-radius: 50%; background: #2a3442; }
.term-bar i:nth-child(1) { background: #ff5f57; } .term-bar i:nth-child(2) { background: #febc2e; } .term-bar i:nth-child(3) { background: #28c840; }
.term-bar span { margin-left: 10px; font: 12px var(--mono); color: var(--dim); }
.term-body { margin: 0; padding: 20px 20px 22px; font: 12.5px/1.65 var(--mono); color: #c3cdd7; min-height: 400px; white-space: pre; overflow-x: auto; }
@media (max-width: 600px) { .term-body { font-size: 10.5px; min-height: 340px; padding: 16px 14px; } }
.t-dim { color: var(--dim); } .t-ok { color: var(--ok); } .t-crit { color: var(--crit); font-weight: 700; } .t-warn { color: var(--warn); font-weight: 700; } .t-epi { color: var(--epi); } .t-b { color: var(--text); font-weight: 700; }
.caret { display: inline-block; width: 8px; height: 15px; background: var(--pqc); vertical-align: -3px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* products */
.product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 860px) { .product-grid { grid-template-columns: 1fr; } }
.product { --c: var(--pqc); position: relative; display: flex; flex-direction: column; gap: 14px; padding: 32px; border-radius: 18px; text-decoration: none; background: linear-gradient(160deg, color-mix(in srgb, var(--c) 9%, var(--panel)) 0%, var(--panel) 55%); border: 1px solid var(--line); overflow: hidden; transition: transform .2s, border-color .2s; }
.product::after { content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px; background: linear-gradient(140deg, var(--c), transparent 45%); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; opacity: .55; pointer-events: none; }
.product:hover { transform: translateY(-3px); }
.product-epi { --c: var(--epi); }
.product-tag { align-self: flex-start; font: 700 12px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--c); border: 1px solid color-mix(in srgb, var(--c) 45%, transparent); padding: 7px 10px; border-radius: 6px; }
.product h3 { font-size: 26px; }
.product p { color: #aebbc8; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 4px 0 0; }
.chips li { font: 12px var(--mono); color: var(--muted); border: 1px solid var(--line-2); border-radius: 999px; padding: 4px 10px; }
.link { color: var(--c, var(--pqc)); font-weight: 600; text-decoration: none; margin-top: auto; }
.research .link, a.link { display: inline-block; }

/* sections */
.section { padding: 110px 0 40px; }
.section-tight { padding: 48px 0; }
@media (max-width: 600px) { .section { padding: 80px 0 28px; } .section-tight { padding: 32px 0; } }
.product-section { border-top: 1px solid var(--line); margin-top: 60px; }
.kicker { font: 500 13px/1 var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .1em; margin-bottom: 22px; }
.badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 8px; font-weight: 700; }
.badge::before { content: ""; width: 8px; height: 8px; border-radius: 2px; background: currentColor; }
.badge-pqc { color: var(--pqc); background: rgba(110,242,196,.08); border: 1px solid rgba(110,242,196,.3); }
.badge-epi { color: var(--epi); background: rgba(167,139,250,.08); border: 1px solid rgba(167,139,250,.3); }
.sub { color: #aab7c4; font-size: 18px; max-width: 720px; margin-bottom: 32px; }
.sub.wide { max-width: 820px; }

/* stats */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-bottom: 40px; background: var(--line); gap: 1px; }
@media (max-width: 860px) { .stats-grid { grid-template-columns: 1fr 1fr; } }
.stat { background: var(--bg-2); padding: 26px 24px; display: flex; flex-direction: column; gap: 8px; }
.stat b { font: 700 clamp(28px, 3.4vw, 40px)/1 var(--font); letter-spacing: -.03em; color: var(--pqc); }
.stat span { color: var(--muted); font-size: 14px; line-height: 1.45; }

/* cards */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.card-accent { border-color: rgba(110,242,196,.35); background: linear-gradient(180deg, rgba(110,242,196,.06), var(--panel) 40%); }
.card-accent-epi { border-color: rgba(167,139,250,.4); background: linear-gradient(180deg, rgba(167,139,250,.08), var(--panel) 40%); }
.compare { display: grid; grid-template-columns: 1fr 1.4fr; gap: 20px; }
@media (max-width: 860px) { .compare { grid-template-columns: 1fr; } }
.compare h3 { margin-bottom: 4px; }
.list { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 10px; color: #b8c4d0; font-size: 15.5px; }
.list li { padding-left: 24px; position: relative; }
.list li::before { content: "–"; position: absolute; left: 4px; color: var(--dim); }
.list.check li::before { content: "✓"; color: var(--pqc); font-weight: 700; left: 2px; }
.card-accent-epi .list.check li::before { color: var(--epi); }
.list b { color: var(--text); font-weight: 600; }

/* calculator */
.calc { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 24px; }
@media (max-width: 600px) { .calc { padding: 16px; } }
.algo-picker { display: flex; flex-wrap: wrap; gap: 8px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.algo-btn { font: 500 13px/1 var(--mono); color: var(--muted); background: transparent; border: 1px solid var(--line-2); padding: 9px 12px; border-radius: 8px; cursor: pointer; transition: all .15s; }
.algo-btn:hover { color: var(--text); border-color: var(--muted); }
.algo-btn[aria-checked="true"] { color: var(--pqc-ink); background: var(--pqc); border-color: var(--pqc); font-weight: 700; }
.algo-btn.classical { border-style: dashed; }
.calc-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 16px; padding: 22px 4px 18px; }
.algo-meta { font: 13px/1.7 var(--mono); color: var(--muted); }
.algo-meta b { color: var(--text); font-size: 22px; font-family: var(--font); display: block; letter-spacing: -.02em; }
.algo-meta .x { color: var(--pqc); }
.verdict { display: flex; gap: 10px; flex-wrap: wrap; }
.pill { font: 700 13px/1 var(--mono); padding: 9px 12px; border-radius: 8px; border: 1px solid; }
.pill-crit { color: var(--crit); border-color: rgba(255,93,99,.45); background: rgba(255,93,99,.08); }
.pill-warn { color: var(--warn); border-color: rgba(255,181,71,.45); background: rgba(255,181,71,.08); }
.pill-ok { color: var(--ok); border-color: rgba(110,242,196,.45); background: rgba(110,242,196,.08); }
.sinks { display: grid; grid-template-columns: minmax(0, 1fr); gap: 8px; }
.sink { border-radius: 10px; background: var(--bg-2); border: 1px solid var(--line); transition: border-color .3s; }
.sink.is-crit { border-color: rgba(255,93,99,.35); }
.sink.is-warn { border-color: rgba(255,181,71,.35); }
.sink-row { all: unset; box-sizing: border-box; width: 100%; cursor: pointer; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 2fr) 170px 18px; gap: 18px; align-items: center; padding: 14px 16px; border-radius: 10px; }
.sink-row:hover { background: rgba(255,255,255,.02); }
.sink-row:focus-visible { outline: 2px solid var(--pqc); outline-offset: 2px; }
@media (max-width: 760px) { .sink-row { grid-template-columns: 1fr 18px; gap: 10px; } .sink-row .bars, .sink-row .sink-num { grid-column: 1; } .sink-row .chev { grid-column: 2; grid-row: 1; } }
.sink-id { display: block; min-width: 0; }
.sink-name { font-weight: 600; font-size: 15px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.sink-cfg { display: block; font: 12px var(--mono); color: var(--dim); margin-top: 3px; overflow-wrap: anywhere; }
.cls { font: 700 10px/1 var(--mono); letter-spacing: .08em; padding: 4px 6px; border-radius: 4px; border: 1px solid var(--line-2); color: var(--muted); }
.bars { display: grid; gap: 6px; }
.bar { position: relative; display: block; height: 12px; border-radius: 6px; background: rgba(255,255,255,.05); }
.bar-fill { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 6px; background: var(--ok); transition: width .55s cubic-bezier(.2,.8,.2,1), background .3s; }
.bar-limit { position: absolute; top: -5px; bottom: -5px; width: 2px; background: var(--text); border-radius: 1px; transition: left .55s cubic-bezier(.2,.8,.2,1); }
.bar-limit::after { content: "limit"; position: absolute; top: -16px; left: 50%; transform: translateX(-50%); font: 10px var(--mono); color: var(--dim); }
.bar-vs { display: none; height: 6px; background: transparent; }
.comparing .bar-vs { display: block; }
.bar-vs .bar-fill { background: var(--epi); opacity: .85; }
.bar-vs.over .bar-fill { background: repeating-linear-gradient(45deg, var(--epi) 0 6px, #7c5fd6 6px 12px); }
.is-crit .bar:not(.bar-vs) .bar-fill { background: linear-gradient(90deg, #c83a40, var(--crit)); }
.is-warn .bar:not(.bar-vs) .bar-fill { background: linear-gradient(90deg, #c88a2a, var(--warn)); }
.sink-num { display: block; font: 12px/1.5 var(--mono); text-align: right; color: var(--muted); }
.sink-num b { display: block; font-size: 14px; color: var(--text); }
.sink-num .n1, .sink-num .n2 { display: block; }
.sink-num .n2 { color: var(--epi); }
.sink-num .n2:empty { display: none; }
.is-crit .sink-num b { color: var(--crit); } .is-warn .sink-num b { color: var(--warn); } .is-ok .sink-num b { color: var(--ok); }
@media (max-width: 760px) { .sink-row .sink-num { text-align: left; } .bars { margin-top: 14px; } }
.chev { color: var(--dim); font-size: 20px; transition: transform .2s; justify-self: end; }
.sink.open .chev { transform: rotate(90deg); color: var(--text); }
.fix { padding: 0 16px 16px; min-width: 0; }
.fix-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.fix-file { font: 12px var(--mono); color: var(--muted); }
.diff { margin: 0; padding: 14px 16px; background: #070a0d; border: 1px solid var(--line); border-radius: 8px; font: 12.5px/1.7 var(--mono); overflow-x: auto; white-space: pre; }
.diff .dm { color: #ff8a8f; background: rgba(255,93,99,.08); display: inline-block; min-width: 100%; }
.diff .dp { color: #8ff5cf; background: rgba(110,242,196,.07); display: inline-block; min-width: 100%; }
.fix-why { color: #b4c0cc; font-size: 14.5px; margin-top: 10px; }
.fix-src { color: var(--dim); font-size: 12.5px; margin-top: 6px; }
.fix-ok { color: var(--ok); font: 13px var(--mono); }
.calc-tools { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 0 0; }
.vs { display: inline-flex; align-items: center; gap: 10px; font: 13px var(--mono); color: var(--muted); }
select, input, textarea { font: 14px var(--font); color: var(--text); background: var(--bg-2); border: 1px solid var(--line-2); border-radius: 8px; padding: 9px 12px; }
select { font-family: var(--mono); font-size: 13px; }
select:focus, input:focus, textarea:focus { outline: 2px solid var(--pqc); outline-offset: 1px; border-color: transparent; }
.vs-label { color: var(--epi); font-size: 16px; font-weight: 500; }
.verdict-sep { width: 1px; background: var(--line-2); margin: 0 2px; }
.fine { font-size: 12.5px; color: var(--dim); margin-top: 18px; line-height: 1.55; }

/* severity */
.sev-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 760px) { .sev-grid { grid-template-columns: 1fr; } }
.sev { border-radius: var(--radius); padding: 28px; border: 1px solid; display: grid; gap: 12px; align-content: start; }
.sev p { color: #b4c0cc; }
.sev .small { color: var(--muted); line-height: 1.7; }
.sev-crit { border-color: rgba(255,93,99,.3); background: linear-gradient(180deg, rgba(255,93,99,.07), transparent 70%); }
.sev-warn { border-color: rgba(255,181,71,.3); background: linear-gradient(180deg, rgba(255,181,71,.07), transparent 70%); }
.tag { justify-self: start; font: 700 11px/1 var(--mono); letter-spacing: .1em; padding: 6px 8px; border-radius: 5px; }
.tag-crit { color: #1a0405; background: var(--crit); }
.tag-warn { color: #1c1100; background: var(--warn); }

/* pipeline */
.pipeline { list-style: none; padding: 0; margin: 10px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: s; }
@media (max-width: 980px) { .pipeline { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .pipeline { grid-template-columns: 1fr; } }
.pipeline li { counter-increment: s; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; position: relative; }
.pipeline li::before { content: "0" counter(s); font: 12px var(--mono); color: var(--dim); position: absolute; top: 24px; right: 22px; }
.step { display: block; font-size: 20px; font-weight: 600; color: var(--pqc); margin-bottom: 10px; }
.pipeline p { color: #aebbc8; font-size: 15px; }

/* ci */
.ci-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
@media (max-width: 860px) { .ci-grid { grid-template-columns: 1fr; gap: 8px; } }
.code { margin: 0; background: #080b0f; border: 1px solid var(--line-2); border-radius: var(--radius); padding: 22px; font: 13px/1.7 var(--mono); color: #c7d1db; overflow-x: auto; }
.code code { background: none; border: 0; padding: 0; font-size: inherit; }
.code .c { color: var(--dim); } .code .k { color: var(--pqc); }

/* offer */
.offer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 860px) { .offer-grid { grid-template-columns: 1fr; } }
.offer { display: flex; flex-direction: column; gap: 6px; }
.offer .list { margin-bottom: 26px; }
.offer-label { font: 500 12px var(--mono); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
.offer h3 { font-size: 24px; }
.price { font-size: 15px; color: var(--muted); }

/* epistemic */
.epi .sub, .epi h2 em { }
.epi-demo { display: grid; grid-template-columns: 1.35fr 1fr; gap: 24px; background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 24px; }
@media (max-width: 980px) { .epi-demo { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .epi-demo { padding: 14px; } }
.epi-stage { background: var(--bg-2); border: 1px solid var(--line); border-radius: 12px; display: grid; place-items: center; padding: 10px; min-width: 0; }
.dag { width: 100%; height: auto; display: block; }
.dag .edges path { fill: none; stroke: var(--line-2); stroke-width: 2; color: var(--line-2); marker-end: url(#arr); transition: stroke .5s, color .5s, opacity .5s; }
.dag .edges path.benign { stroke-dasharray: 4 5; }
.dag .edges path.hot { stroke: var(--crit); color: var(--crit); stroke-dasharray: 6 6; animation: flow 1s linear infinite; }
.dag .edges path.cut { opacity: .15; }
@keyframes flow { to { stroke-dashoffset: -24; } }
.dag .nodes rect { fill: var(--panel-2); stroke: var(--line-2); stroke-width: 1.5; transition: fill .5s, stroke .5s, opacity .5s; }
.dag .nodes text { fill: var(--text); font: 600 13px var(--font); text-anchor: middle; transition: opacity .5s; }
.dag .nodes text.sub-t { fill: var(--dim); font: 11px var(--mono); }
.dag .nodes g { transition: opacity .5s, transform .5s; }
.dag .nodes g.tainted rect { fill: rgba(255,93,99,.12); stroke: var(--crit); }
.dag .nodes g.quar rect { fill: rgba(167,139,250,.14); stroke: var(--epi); stroke-dasharray: 5 4; }
.dag .nodes g.gone { opacity: .22; }
.dag .nodes g.restored rect { fill: rgba(110,242,196,.1); stroke: var(--ok); }
.dag .nodes g.clean rect { stroke: rgba(110,242,196,.5); }
.epi-side { display: flex; flex-direction: column; }
.epi-steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 4px; }
.epi-steps li { padding: 11px 14px 11px 40px; border-radius: 10px; position: relative; color: var(--dim); transition: background .3s, color .3s; border: 1px solid transparent; }
.epi-steps li::before { content: ""; position: absolute; left: 15px; top: 17px; width: 10px; height: 10px; border-radius: 50%; border: 2px solid var(--line-2); transition: all .3s; }
.epi-steps li b { display: block; font-size: 15px; color: inherit; }
.epi-steps li span { font-size: 13.5px; line-height: 1.5; display: block; }
.epi-steps li.done { color: #9aa7b4; }
.epi-steps li.done::before { background: var(--epi); border-color: var(--epi); }
.epi-steps li.active { color: var(--text); background: rgba(167,139,250,.08); border-color: rgba(167,139,250,.3); }
.epi-steps li.active::before { border-color: var(--epi); box-shadow: 0 0 0 4px rgba(167,139,250,.2); }
.epi-steps li.bad.active { background: rgba(255,93,99,.07); border-color: rgba(255,93,99,.3); }
.epi-steps li.bad.active::before { border-color: var(--crit); box-shadow: 0 0 0 4px rgba(255,93,99,.2); }
.epi-side .cta-row { margin-top: 18px; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 980px) { .feature-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .feature-grid { grid-template-columns: 1fr; } }
.feature { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.feature h3 { font-size: 18px; margin-bottom: 10px; color: var(--epi); }
.feature p { color: #aebbc8; font-size: 15px; }
.feature strong { color: var(--text); }

/* principles */
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; }
@media (max-width: 860px) { .principles { grid-template-columns: 1fr; gap: 28px; } }
.principles .num { font: 12px var(--mono); color: var(--dim); display: block; margin-bottom: 14px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.principles h3 { margin-bottom: 10px; }
.principles p { color: #aebbc8; font-size: 15.5px; }

/* contact */
.contact { text-align: center; padding-bottom: 120px; }
.contact-inner { display: flex; flex-direction: column; align-items: center; }
.contact .sub { margin: 0 auto 30px; }
.email { font: 600 clamp(26px, 5.6vw, 60px)/1.1 var(--font); letter-spacing: -.03em; text-decoration: none; background: linear-gradient(100deg, var(--pqc), #9ad7ff 50%, var(--epi)); -webkit-background-clip: text; background-clip: text; color: transparent; overflow-wrap: anywhere; padding-bottom: 4px; border-bottom: 2px solid transparent; transition: border-color .2s; }
.email:hover { border-bottom-color: rgba(154,215,255,.4); }

/* footer */
.footer { border-top: 1px solid var(--line); padding: 28px 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer a { text-decoration: none; }
.footer a:hover { color: var(--text); }

/* reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}

.nw { white-space: nowrap; }
@media (max-width: 760px) { .bar { margin-top: 14px; } }

/* timeline */
.timeline { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 28px; margin-bottom: 40px; }
.tl-head { display: grid; grid-template-columns: 1fr 1.4fr; gap: 24px; align-items: end; margin-bottom: 28px; }
@media (max-width: 860px) { .tl-head { grid-template-columns: 1fr; gap: 8px; } }
.tl { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); position: relative; }
.tl::before { content: ""; position: absolute; left: 0; right: 0; top: 7px; height: 2px; background: linear-gradient(90deg, var(--pqc), var(--warn) 55%, var(--crit)); opacity: .6; }
.tl-item { position: relative; padding: 28px 16px 0 0; display: grid; gap: 6px; align-content: start; }
.tl-item::before { content: ""; position: absolute; top: 0; left: 0; width: 16px; height: 16px; border-radius: 50%; background: var(--bg); border: 2px solid var(--warn); }
.tl-item.past::before { background: var(--pqc); border-color: var(--pqc); }
.tl-item.end::before { border-color: var(--crit); background: var(--crit); }
.tl-year { font: 700 13px var(--mono); color: var(--warn); }
.tl-item.past .tl-year { color: var(--pqc); } .tl-item.end .tl-year { color: var(--crit); }
.tl-item b { font-size: 15px; line-height: 1.3; }
.tl-item span:last-child { font-size: 13.5px; color: var(--muted); line-height: 1.5; }
@media (max-width: 860px) {
  .tl { grid-template-columns: 1fr; gap: 20px; padding-left: 28px; }
  .tl::before { left: 7px; right: auto; top: 0; bottom: 0; width: 2px; height: auto; background: linear-gradient(180deg, var(--pqc), var(--warn) 55%, var(--crit)); }
  .tl-item { padding: 0; }
  .tl-item::before { left: -28px; top: 2px; }
}

/* checker */
.checker { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 24px; display: grid; gap: 14px; }
@media (max-width: 600px) { .checker { padding: 16px; } }
.ck-controls { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.ck-controls label { display: inline-flex; align-items: center; gap: 8px; font: 13px var(--mono); color: var(--muted); }
.ck-controls .btn[type=submit] { margin-left: auto; }
@media (max-width: 600px) { .ck-controls label { width: 100%; justify-content: space-between; } .ck-controls .btn[type=submit] { margin-left: 0; } }
#ck-input { width: 100%; min-height: 200px; resize: vertical; font: 13px/1.6 var(--mono); background: #070a0d; }
.ck-status { font: 12.5px var(--mono); color: var(--muted); min-height: 1em; }
.ck-list { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 8px; }
.ck-list li { background: var(--bg-2); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; display: grid; gap: 8px; }
.ck-list li.is-crit { border-color: rgba(255,93,99,.35); } .ck-list li.is-warn { border-color: rgba(255,181,71,.35); }
.ck-top { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.ck-cat { font: 600 13px var(--mono); }
.ck-line { font: 12px var(--mono); color: var(--dim); }
.ck-bytes { margin-left: auto; font: 13px var(--mono); color: var(--muted); }
.ck-bytes b { color: var(--text); }
.is-crit .ck-bytes b { color: var(--crit); } .is-warn .ck-bytes b { color: var(--warn); }
.ck-src { display: block; overflow-x: auto; white-space: pre; padding: 8px 10px; font-size: 12.5px; }
.ck-model { font-size: 14px; color: #aebbc8; }
.ck-fix { color: var(--text); }
.ck-err { color: var(--crit); font-size: 14px; } .ck-empty { color: var(--muted); }
.tag-ok { color: var(--pqc-ink); background: var(--ok); }

/* epistemic explore */
.dag .nodes g { cursor: pointer; outline: none; }
.dag .nodes g:hover rect, .dag .nodes g:focus-visible rect { stroke: var(--text); }
.dag .nodes g.root rect { fill: rgba(255,93,99,.25); stroke: var(--crit); stroke-width: 2.5; }
.epi-stage { display: flex; flex-direction: column; gap: 10px; }
.epi-hint { font: 12.5px var(--mono); color: var(--dim); text-align: center; opacity: 0; transition: opacity .4s; }
.epi-hint.show { opacity: 1; color: var(--epi); }
.epi-readout { width: 100%; background: rgba(167,139,250,.07); border: 1px solid rgba(167,139,250,.3); border-radius: 10px; padding: 12px 14px; display: grid; gap: 4px; font-size: 14px; color: #c9d2db; }
.epi-readout b { color: var(--text); }
.ro-ok { color: var(--ok); font-size: 13px; }
.epi-steps li { cursor: pointer; }

/* writing */
.post-card { display: grid; gap: 10px; text-decoration: none; padding: 32px; border-radius: 18px; border: 1px solid var(--line); background: linear-gradient(135deg, rgba(110,242,196,.06), var(--panel) 50%); transition: transform .2s, border-color .2s; }
.post-card:hover { transform: translateY(-2px); border-color: rgba(110,242,196,.4); }
.post-card h3 { font-size: clamp(22px, 3vw, 30px); }
.post-card p { color: #aebbc8; max-width: 760px; }
.post-meta { font: 12px var(--mono); color: var(--dim); text-transform: uppercase; letter-spacing: .08em; }

/* contact form */
.contact-form { width: 100%; max-width: 680px; margin: 0 auto; text-align: left; display: grid; gap: 14px; background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 24px; }
.contact-form label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.contact-form input, .contact-form select, .contact-form textarea { width: 100%; font-size: 15px; }
.contact-form textarea { resize: vertical; }
.cf-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 600px) { .cf-row { grid-template-columns: 1fr; } .contact-form { padding: 16px; } }
.cf-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.cf-status { font-size: 14px; color: var(--muted); }
.cf-status.ok { color: var(--ok); } .cf-status.err { color: var(--warn); }
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.or { margin-top: 22px; color: var(--muted); font-size: 15px; }
.email-sm { color: var(--text); font-weight: 600; }
.btn-link { all: unset; cursor: pointer; color: var(--dim); font-size: 13px; margin-left: 8px; text-decoration: underline; }
.btn-link:hover { color: var(--text); }
.contact .sub { margin-bottom: 26px; }

/* sub-page heroes */
.hero-sub { padding: 64px 0 24px; }
.h1-sub { font-size: clamp(34px, 5.2vw, 62px); letter-spacing: -.03em; line-height: 1.06; max-width: 1000px; text-wrap: balance; }
.lede.wide { max-width: 860px; }
.hl-epi { background: linear-gradient(100deg, #c4b5fd 10%, var(--epi) 60%, #f0abfc 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub.epi .epi-demo { margin-top: 40px; }
.h3-like { font-size: 20px; margin: 0; letter-spacing: -.02em; }
.nav-links a[aria-current="page"] { color: var(--text); }
.crumbs { display: flex; flex-wrap: wrap; gap: 6px; padding-top: 22px; font: 12.5px var(--mono); color: var(--dim); }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--text); }
.crumbs + main .hero-sub, .crumbs + main .article { padding-top: 36px; }

/* reference strip + grid */
.ref-strip { display: grid; grid-template-columns: 1.1fr 1fr; gap: 32px; align-items: center; background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 32px; }
@media (max-width: 860px) { .ref-strip { grid-template-columns: 1fr; padding: 22px; } }
.ref-strip .sub { margin-bottom: 0; }
.ref-links { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.ref-links a { display: block; padding: 11px 14px; border-radius: 10px; text-decoration: none; font-weight: 500; border: 1px solid transparent; transition: background .2s, border-color .2s; }
.ref-links a:hover { background: rgba(110,242,196,.06); border-color: rgba(110,242,196,.3); color: var(--pqc); }
.ref-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 28px 0 8px; }
@media (max-width: 860px) { .ref-grid { grid-template-columns: 1fr 1fr; } }
.ref-grid a { display: grid; gap: 4px; padding: 18px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); text-decoration: none; transition: border-color .2s, transform .2s; }
.ref-grid a:hover { border-color: rgba(110,242,196,.4); transform: translateY(-2px); }
.ref-grid b { color: var(--pqc); font-size: 17px; }
.ref-grid span { color: var(--muted); font-size: 13.5px; line-height: 1.45; }

/* FAQ */
.faq { max-width: 860px; }
.faq details { border: 1px solid var(--line); border-radius: 12px; background: var(--panel); margin-bottom: 10px; }
.faq summary { cursor: pointer; padding: 18px 22px; font-weight: 600; font-size: 17px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--epi); font-family: var(--mono); }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 22px 20px; color: #b8c4d0; }

/* footer links */
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; font-size: 14px; color: var(--muted); }
.lede + .sub { margin-top: 16px; }