/* Optixall v2 — editorial, enterprise. Reference register: Jane Street / a16z / OpenAI.
   Serif display + grotesque text, warm paper, near-monochrome, hairline rules, generous air. */
@import url('https://fonts.googleapis.com/css2?family=Newsreader:opsz,wght@6..72,400;6..72,500;6..72,600&family=Hanken+Grotesk:wght@400;500;600&family=Geist+Mono:wght@400;500&display=swap');

:root {
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Hanken Grotesk", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* warm paper, ink, restrained ember */
  --paper:   #F4F1E9;
  --paper-2: #FBFAF5;
  --ink:     #1A1712;
  --ink-2:   #57514608;
  --ink-2:   #5B554A;
  --ink-3:   #938C7E;
  --ink-4:   #B8B1A2;
  --line:    #E0DACB;
  --line-2:  #CEC6B3;
  --ember:   #A24E12;     /* deep, expensive amber — used sparingly */
  --ember-2: #C2410C;

  --maxw: 1180px;
  --gutter: 40px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--sans); font-size: 17px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; letter-spacing: -0.006em;
  overflow-x: hidden;
}
::selection { background: var(--ember); color: var(--paper); }
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.mono { font-family: var(--mono); }

/* ── type primitives ── */
.kicker {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--ink-3); font-weight: 500;
  display: inline-flex; align-items: baseline; gap: 12px;
}
.kicker .idx { color: var(--ember); }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; margin: 0; letter-spacing: -0.018em; line-height: 1.06; }
.display { font-size: clamp(44px, 6.4vw, 88px); line-height: 1.0; letter-spacing: -0.03em; font-weight: 400; }
.display .it { font-style: italic; font-weight: 500; }
.h-sec { font-size: clamp(32px, 4.6vw, 56px); line-height: 1.04; letter-spacing: -0.022em; }
.h-sec .it { font-style: italic; }
.lede { font-family: var(--sans); color: var(--ink-2); font-size: 19px; line-height: 1.62; max-width: 56ch; letter-spacing: -0.004em; }

/* ── section rhythm ── */
section { padding: 132px 0; border-top: 1px solid var(--line); position: relative; }
.sec-head { max-width: 760px; margin-bottom: 72px; }
.sec-head .h-sec { margin-top: 26px; }
.sec-head .lede { margin-top: 26px; }

/* ── buttons ── */
.btn { display: inline-flex; align-items: center; gap: 10px; height: 52px; padding: 0 26px;
  border-radius: 2px; font-family: var(--sans); font-weight: 500; font-size: 15.5px;
  border: 1px solid transparent; transition: background .18s ease, color .18s ease, border-color .18s; letter-spacing: -0.005em; white-space: nowrap; }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: #000; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-sm { height: 42px; padding: 0 18px; font-size: 14.5px; }
.btn .arw { transition: transform .18s; font-family: var(--mono); }
.btn:hover .arw { transform: translateX(4px); }

/* ── nav ── */
.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in oklch, var(--paper) 86%, transparent);
  backdrop-filter: blur(12px); border-bottom: 1px solid transparent; transition: border-color .2s; }
.nav.scrolled { border-color: var(--line); }
.nav-in { display: flex; align-items: center; gap: 40px; height: 74px; }
.brand { display: flex; align-items: baseline; gap: 1px; font-family: var(--serif); font-weight: 500; font-size: 23px; letter-spacing: -0.02em; }
.brand .x { color: var(--ember); font-style: italic; }
.nav-links { display: flex; gap: 30px; margin-left: 12px; }
.nav-links a { color: var(--ink-2); font-size: 14.5px; transition: color .15s; letter-spacing: -0.004em; }
.nav-links a:hover { color: var(--ink); }
.nav-cta { margin-left: auto; display: flex; align-items: center; gap: 14px; }

/* ── hero ── */
.hero { padding: 96px 0 108px; border-top: none; }
.hero-grid { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 64px; align-items: center; }
.hero .display { margin-top: 30px; }
.hero .lede { margin-top: 30px; font-size: 20px; }
.hero-cta { display: flex; gap: 16px; margin-top: 40px; flex-wrap: wrap; }
.microcopy { margin-top: 22px; font-size: 13.5px; color: var(--ink-3); font-family: var(--mono); letter-spacing: 0.01em; }

/* domain index list under hero (replaces colored chips) */
.dom-index { margin-top: 56px; padding-top: 26px; border-top: 1px solid var(--line);
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px 32px; }
.dom-index .di { padding: 9px 0; font-size: 13.5px; color: var(--ink-2); display: flex; align-items: baseline; gap: 10px;
  border-top: 1px solid var(--line); }
.dom-index .di:nth-child(-n+3) { border-top: none; }
.dom-index .di .n { font-family: var(--mono); font-size: 11px; color: var(--ink-4); }

/* ── signal instrument (monochrome) ── */
.core { position: relative; width: 100%; max-width: 460px; margin: 0 auto; aspect-ratio: 1/1; }
.core svg { width: 100%; height: 100%; overflow: visible; }
.ring { fill: none; stroke: var(--line-2); }
.ring-faint { stroke: var(--line); }
.ring-spin { transform-origin: 250px 250px; animation: spin 90s linear infinite; }
.ring-spin.rev { animation-direction: reverse; animation-duration: 120s; }
@keyframes spin { to { transform: rotate(360deg); } }
.spoke { stroke: var(--line); }
.nodec { fill: var(--paper-2); stroke: var(--line-2); }
.nodelbl { fill: var(--ink-2); font-family: var(--mono); font-size: 10px; letter-spacing: 0.04em; }
.hubring { fill: var(--paper-2); stroke: var(--ink); }
.pulse { animation: pulse 4s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
@keyframes pulse { 0%,100% { opacity: .5; } 50% { opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .ring-spin, .pulse { animation: none; } }

/* ── evolution ── */
.evo { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.evo-flow { display: flex; align-items: center; gap: 16px; margin: 30px 0 8px; font-family: var(--serif); font-size: 24px; }
.evo-flow .from { color: var(--ink-3); }
.evo-flow .to { color: var(--ink); }
.evo-flow .to .x { color: var(--ember); font-style: italic; }
.evo-flow .ar { color: var(--ink-4); font-family: var(--mono); font-size: 18px; }
.formula { margin-top: 28px; display: flex; flex-direction: column; gap: 0; }
.formula .fr { display: flex; gap: 18px; padding: 14px 0; border-top: 1px solid var(--line); align-items: baseline; }
.formula .fr:first-child { border-top: none; }
.formula .fr .term { font-family: var(--serif); font-style: italic; font-size: 21px; width: 52px; color: var(--ember); flex-shrink: 0; }
.formula .fr .def { font-size: 14.5px; color: var(--ink-2); }
.evo-rows { display: flex; flex-direction: column; }
.evo-row { display: grid; grid-template-columns: 88px 1fr; gap: 20px; padding: 22px 0; border-top: 1px solid var(--line); align-items: baseline; }
.evo-row:first-child { border-top: none; }
.evo-row .lbl { font-family: var(--mono); font-size: 11px; color: var(--ink-3); letter-spacing: 0.12em; }
.evo-row .txt { font-size: 16px; color: var(--ink-2); line-height: 1.55; }
.evo-row .txt b { color: var(--ink); font-weight: 600; }

/* ── editorial capability rows ── */
.caps { display: grid; grid-template-columns: 1fr 1fr; gap: 0 80px; }
.cap { padding: 34px 0; border-top: 1px solid var(--line); }
.caps .cap:nth-child(-n+2) { border-top: none; }
.cap .cap-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 16px; }
.cap .cap-idx { font-family: var(--serif); font-size: 32px; color: var(--ink-4); font-weight: 400; line-height: 1; }
.cap .cap-kick { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3); }
.cap h3 { font-size: 25px; letter-spacing: -0.015em; margin-bottom: 12px; }
.cap p { font-size: 15.5px; color: var(--ink-2); margin: 0; max-width: 46ch; line-height: 1.58; }

/* ── engine pipeline ── */
.engine-stage { border: 1px solid var(--line); border-radius: 4px; background: var(--paper-2); }
.pipe { display: grid; grid-template-columns: repeat(6, 1fr); }
.pipe-stage { padding: 32px 26px; border-right: 1px solid var(--line); }
.pipe-stage:last-child { border-right: none; }
.pipe-stage .pnum { font-family: var(--mono); font-size: 11px; color: var(--ember); letter-spacing: 0.12em; }
.pipe-stage h4 { font-family: var(--serif); font-size: 19px; font-weight: 500; margin: 12px 0 18px; letter-spacing: -0.01em; }
.pipe-step { font-family: var(--mono); font-size: 12px; color: var(--ink-2); padding: 9px 0; border-top: 1px solid var(--line); letter-spacing: -0.01em; }

/* ── matrix ── */
.matrix-shell { overflow-x: auto; border: 1px solid var(--line); border-radius: 4px; background: var(--paper-2); }
.matrix { width: 100%; border-collapse: collapse; min-width: 700px; }
.matrix thead th { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-3); font-weight: 500; padding: 20px 14px; text-align: center; border-bottom: 1px solid var(--line-2); }
.matrix thead th:first-child { text-align: left; padding-left: 28px; }
.matrix tbody th { text-align: left; font-family: var(--serif); font-weight: 500; font-size: 18px; padding: 0 28px;
  height: 60px; border-bottom: 1px solid var(--line); white-space: nowrap; letter-spacing: -0.01em; }
.matrix tbody td { text-align: center; border-bottom: 1px solid var(--line); border-left: 1px solid var(--line); }
.matrix tbody tr:last-child th, .matrix tbody tr:last-child td { border-bottom: none; }
.cell { width: 9px; height: 9px; margin: 0 auto; background: transparent; border: 1px solid var(--line-2); border-radius: 1px; transition: background .2s; }
.cell.on { background: var(--ink); border-color: var(--ink); }
.cell.on.acc { background: var(--ember); border-color: var(--ember); }

/* ── suite ── */
.suite { border: 1px solid var(--line); border-radius: 4px; overflow: hidden; background: var(--paper-2); }
.suite-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.mod { padding: 30px 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background .18s; }
.mod:hover { background: var(--paper); }
.suite-grid .mod:nth-child(4n) { border-right: none; }
.mod .mod-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 22px; }
.mod .mnum { font-family: var(--mono); font-size: 11px; color: var(--ink-4); }
.mod .stat { font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3);
  border: 1px solid var(--line-2); border-radius: 999px; padding: 3px 9px; }
.mod .stat.live { color: var(--ember); border-color: color-mix(in oklch, var(--ember) 40%, var(--line-2)); }
.mod h3 { font-size: 21px; margin: 0 0 8px; letter-spacing: -0.01em; }
.mod p { font-family: var(--sans); font-size: 14px; color: var(--ink-2); margin: 0; line-height: 1.5; }
.mod.control { grid-column: span 4; border-right: none; border-bottom: none; display: flex; align-items: center;
  gap: 32px; background: var(--paper); }
.mod.control .mbody { flex: 1; }
.mod.control h3 { font-size: 26px; margin-bottom: 6px; }
.mod.control p { font-size: 15.5px; max-width: 72ch; }

/* ── enterprise ── */
.ent { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 80px; }
.ent-item { display: grid; grid-template-columns: 30px 1fr; gap: 18px; padding: 24px 0; border-top: 1px solid var(--line); align-items: baseline; }
.ent .ent-item:nth-child(-n+2) { border-top: none; }
.ent-item .en { font-family: var(--mono); font-size: 12px; color: var(--ember); }
.ent-item h4 { font-family: var(--serif); font-size: 19px; margin: 0 0 5px; font-weight: 500; letter-spacing: -0.01em; }
.ent-item p { font-family: var(--sans); font-size: 14.5px; color: var(--ink-2); margin: 0; }

/* ── roadmap ── */
.road { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid var(--line); border-radius: 4px; background: var(--paper-2); }
.road-col { padding: 36px 30px; border-right: 1px solid var(--line); }
.road-col:last-child { border-right: none; }
.road-col .phase { font-family: var(--mono); font-size: 11px; color: var(--ink-3); letter-spacing: 0.12em; text-transform: uppercase; }
.road-col h3 { font-size: 26px; margin: 14px 0 0; }
.road-col.future h3 .x { color: var(--ember); font-style: italic; }
.road-list { list-style: none; padding: 0; margin: 24px 0 0; }
.road-list li { display: grid; grid-template-columns: 16px 1fr; gap: 12px; padding: 13px 0; font-size: 15px; color: var(--ink-2);
  border-top: 1px solid var(--line); align-items: baseline; }
.road-list li:first-child { border-top: none; }
.road-list li .mk { font-family: var(--mono); color: var(--ink-4); font-size: 12px; }
.road-col.future .road-list li .mk { color: var(--ember); }

/* ── final CTA — inverted ink panel ── */
.final { border-top: 1px solid var(--line); }
.final-card { background: var(--ink); color: var(--paper); border-radius: 4px; padding: 96px 48px; text-align: center; }
.final-card .kicker { color: var(--ink-4); }
.final-card .kicker .idx { color: var(--ember-2); }
.final-card h2 { color: var(--paper); font-size: clamp(36px, 5vw, 64px); max-width: 18ch; margin: 24px auto 0; line-height: 1.02; }
.final-card h2 .it { font-style: italic; }
.final-card .lede { color: #C9C2B3; margin: 26px auto 0; text-align: center; }
.final-cta { display: flex; gap: 16px; justify-content: center; margin-top: 44px; flex-wrap: wrap; }
.final-cta .btn-primary { background: var(--paper); color: var(--ink); }
.final-cta .btn-primary:hover { background: #fff; }
.final-cta .btn-ghost { color: var(--paper); border-color: #4A453C; }
.final-cta .btn-ghost:hover { border-color: var(--paper); }

/* ── footer ── */
footer { padding: 72px 0 48px; border-top: 1px solid var(--line); }
.foot-grid { display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
.foot-brand { max-width: 340px; }
.foot-brand .brand { font-size: 22px; }
.foot-brand p { color: var(--ink-3); font-size: 14.5px; margin: 16px 0 0; line-height: 1.55; }
.foot-cols { display: flex; gap: 72px; flex-wrap: wrap; }
.foot-col h5 { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 16px; font-weight: 500; }
.foot-col a { display: block; color: var(--ink-2); font-size: 14.5px; padding: 6px 0; transition: color .15s; }
.foot-col a:hover { color: var(--ink); }
.foot-base { margin-top: 56px; padding-top: 26px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--ink-4); font-size: 13px; font-family: var(--mono); letter-spacing: 0.02em; }

/* ── reveal ── */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .8s cubic-bezier(.22,.61,.36,1), transform .8s cubic-bezier(.22,.61,.36,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ── responsive ── */
@media (max-width: 940px) {
  .hero-grid, .evo { grid-template-columns: 1fr; gap: 52px; }
  .core { max-width: 360px; }
  .caps, .ent { grid-template-columns: 1fr; }
  .caps .cap:nth-child(2), .ent .ent-item:nth-child(2) { border-top: 1px solid var(--line); }
  .pipe { grid-template-columns: repeat(2, 1fr); }
  .pipe-stage { border-bottom: 1px solid var(--line); }
  .pipe-stage:nth-child(even) { border-right: none; }
  .suite-grid { grid-template-columns: repeat(2, 1fr); }
  .suite-grid .mod:nth-child(2n) { border-right: none; }
  .mod.control { grid-column: span 2; }
  .road { grid-template-columns: 1fr; }
  .road-col { border-right: none; border-bottom: 1px solid var(--line); }
  .road-col:last-child { border-bottom: none; }
  .nav-links { display: none; }
  .dom-index { grid-template-columns: repeat(2, 1fr); }
  .dom-index .di:nth-child(-n+3) { border-top: 1px solid var(--line); }
  .dom-index .di:nth-child(-n+2) { border-top: none; }
}
@media (max-width: 600px) {
  :root { --gutter: 22px; }
  section { padding: 84px 0; }
  .pipe, .suite-grid, .dom-index { grid-template-columns: 1fr; }
  .pipe-stage { border-right: none; }
  .suite-grid .mod { border-right: none; }
  .mod.control { grid-column: span 1; flex-direction: column; align-items: flex-start; }
  .final-card { padding: 60px 26px; }
  .hero-cta .btn, .final-cta .btn { flex: 1; justify-content: center; }
  .dom-index .di { border-top: 1px solid var(--line) !important; }
  .dom-index .di:first-child { border-top: none !important; }
}