/* Ai4Innov Technologies: ai4innov.tech
   Design language derived from the Ai4Innov capabilities decks:
   near-black / off-white editorial surfaces, serif headlines, Ai4Innov-blue accents, pixel-grid motif. */

@font-face { font-family: "Inter"; src: url("../fonts/inter-latin-wght-normal.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Source Serif 4"; src: url("../fonts/source-serif-4-latin-600-normal.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Source Serif 4"; src: url("../fonts/source-serif-4-latin-700-normal.woff2") format("woff2"); font-weight: 700; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("../fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("../fonts/jetbrains-mono-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-display: swap; }

:root {
  --black: #0c0c0c;
  --ink: #111111;
  --ink-2: #171717;
  --ink-3: #1e1e1e;
  --line-d: #2a2a2a;
  --line-d2: #383838;
  --paper: #f4f4f2;
  --white: #ffffff;
  --line-l: #dadad6;
  --grey-1: #bdbdbd;
  --grey-2: #8a8a8a;
  --grey-3: #595959;
  --accent: #1F5FAE;
  --accent-soft: rgba(31,95,174, .14);
  --accent-ink: #174a8b;
  --gray-accent: #5f6670;
  --serif: "Source Serif 4", Cambria, Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  --radius: 18px;
  --radius-s: 12px;
  --max: 1240px;
  --nav-h: 68px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--black); color: var(--white);
  font: 400 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, video, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
::selection { background: var(--accent); color: var(--white); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 28px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 200; background: var(--accent); color: var(--white); padding: 10px 14px; border-radius: 8px; font-weight: 600; }
.skip:focus { top: 12px; }

/* ---------- typography ---------- */
h1, h2, h3, h4 { margin: 0; font-weight: 700; }
.display { font: 700 clamp(46px, 7.4vw, 104px)/1.0 var(--serif); letter-spacing: -.025em; }
.h2 { font: 700 clamp(34px, 4.6vw, 60px)/1.06 var(--serif); letter-spacing: -.02em; }
.h3 { font: 700 clamp(24px, 2.4vw, 30px)/1.18 var(--serif); letter-spacing: -.01em; }
.lead { font-size: clamp(18px, 1.6vw, 21px); line-height: 1.55; color: var(--grey-1); max-width: 720px; }
.light .lead, .white .lead { color: var(--grey-3); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 22px;
  font: 500 12px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--grey-2);
}
.eyebrow::before { content: ""; width: 8px; height: 8px; background: var(--accent); }
.muted { color: var(--grey-2); }
.y { color: var(--accent); }
.mono { font-family: var(--mono); }
.small { font-size: 14px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px; height: 48px; padding: 0 22px; border-radius: 999px;
  font: 600 15px/1 var(--sans); border: 1px solid transparent; cursor: pointer; transition: transform .2s, background .2s, border-color .2s, color .2s;
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; transition: transform .2s; }
.btn:hover svg { transform: translateX(3px); }
.btn-primary { background: var(--white); color: var(--ink); }
.btn-primary:hover { background: var(--gray-accent); color: var(--white); }
.btn-accent { background: var(--white); color: var(--ink); }
.btn-accent:hover { background: var(--gray-accent); color: var(--white); }
.btn-ghost { border-color: var(--line-d2); color: var(--white); }
.btn-ghost:hover { border-color: var(--white); }
.light .btn-ghost { border-color: #c9c9c4; color: var(--ink); }
.light .btn-ghost:hover { border-color: var(--ink); }
.light .btn-primary { background: var(--ink); color: var(--white); }
.light .btn-primary:hover { background: var(--gray-accent); color: var(--white); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
.link-arrow { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; border-bottom: 1px solid currentColor; padding-bottom: 2px; }
.link-arrow:hover { color: var(--accent); }
.light .link-arrow:hover { color: var(--ink); border-color: var(--accent); }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100; height: var(--nav-h);
  background: var(--white); color: var(--ink);
  border-bottom: 1px solid var(--line-l); box-shadow: 0 1px 14px rgba(0, 0, 0, .06);
}
.nav .container { height: 100%; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 11px; font: 650 18px/1 var(--sans); letter-spacing: -.01em; }
.brand img { width: 40px; height: auto; }
.brand small { display: block; font: 500 10px/1 var(--mono); letter-spacing: .18em; color: var(--grey-2); margin-top: 4px; text-transform: uppercase; }
.nav .brand small { color: var(--grey-3); }
.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-links a { padding: 8px 12px; border-radius: 8px; font-size: 14.5px; color: #3a3a3a; transition: color .2s, background .2s; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); background: rgba(0,0,0,.05); }
.nav-cta { display: flex; gap: 10px; }
.nav-cta .btn { height: 40px; padding: 0 18px; font-size: 14px; }
.nav .btn-primary { background: var(--ink); color: var(--white); }
.nav .btn-primary:hover { background: var(--gray-accent); color: var(--white); }
.nav-toggle { display: none; margin-left: auto; width: 44px; height: 44px; border-radius: 10px; border: 1px solid var(--line-l); background: transparent; cursor: pointer; }
.nav-toggle span { display: block; width: 18px; height: 1.5px; background: var(--ink); margin: 5px auto; transition: transform .25s, opacity .25s; }
.nav.open .nav-toggle span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav.open .nav-toggle span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- sections ---------- */
section { position: relative; }
.section { padding: clamp(84px, 11vw, 148px) 0; }
.section-tight { padding: clamp(56px, 7vw, 88px) 0; }
.dark { background: var(--black); color: var(--white); }
.dark-2 { background: var(--ink); color: var(--white); }
.light { background: var(--paper); color: var(--ink); }
.white { background: var(--white); color: var(--ink); }
.light .eyebrow, .white .eyebrow { color: var(--grey-3); }
.light .muted, .white .muted { color: var(--grey-3); }
.sec-head { display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: start; margin-bottom: clamp(44px, 6vw, 72px); }
.sec-head .lead { margin-top: 20px; }
.rule { height: 1px; background: var(--line-d); border: 0; margin: 0; }
.light .rule { background: var(--line-l); }

/* pixel grid motif (deck signature) */
.pixgrid { display: grid; grid-template-columns: repeat(5, 12px); gap: 7px; flex: none; }
.pixgrid i { width: 12px; height: 12px; background: #2b2b2b; transition: background .5s; }
.pixgrid i.on { background: var(--white); }
.pixgrid i.hl { background: var(--accent); }
.light .pixgrid i, .white .pixgrid i { background: var(--line-l); }
.light .pixgrid i.on, .white .pixgrid i.on { background: var(--ink); }
.light .pixgrid i.hl, .white .pixgrid i.hl { background: var(--accent); }

/* ---------- hero ---------- */
.hero { padding: calc(var(--nav-h) + clamp(56px, 9vw, 112px)) 0 clamp(64px, 8vw, 104px); overflow: hidden; background: var(--black); }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .55; pointer-events: none;
  mask-image: radial-gradient(ellipse 70% 60% at 70% 30%, #000 10%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse 70% 60% at 70% 30%, #000 10%, transparent 75%); }
.hero .container { position: relative; }
.hero-top { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 40px; align-items: start; }
.hero h1 { max-width: 980px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lead { margin: 28px 0 36px; font-size: clamp(18px, 1.7vw, 22px); }
.hero-media { margin-top: clamp(48px, 7vw, 84px); }
.hero-points { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 28px; border-top: 1px solid var(--line-d); }
.hero-points div { padding: 22px 22px 0 0; }
.hero-points b { display: block; font: 600 15px/1.3 var(--sans); margin-bottom: 6px; }
.hero-points span { font-size: 14px; color: var(--grey-2); line-height: 1.5; display: block; }

/* ---------- media frames ---------- */
.media {
  position: relative; border-radius: var(--radius); overflow: hidden; background: #0c0c0c; border: 1px solid var(--line-d);
  aspect-ratio: 16 / 9; box-shadow: 0 40px 120px -40px rgba(0,0,0,.8);
}
.media video, .media img { width: 100%; height: 100%; object-fit: cover; }
.media .corner { position: absolute; width: 18px; height: 18px; border: 2px solid var(--accent); z-index: 2; pointer-events: none; }
.media .c1 { top: 12px; left: 12px; border-right: 0; border-bottom: 0; }
.media .c2 { top: 12px; right: 12px; border-left: 0; border-bottom: 0; }
.media .c3 { bottom: 12px; left: 12px; border-right: 0; border-top: 0; }
.media .c4 { bottom: 12px; right: 12px; border-left: 0; border-top: 0; }
.media-btn {
  position: absolute; right: 18px; bottom: 18px; z-index: 3; width: 38px; height: 38px; border-radius: 50%;
  background: rgba(17,17,17,.72); border: 1px solid #3a3a3a; display: grid; place-items: center; cursor: pointer; backdrop-filter: blur(8px);
}
.media-btn svg { width: 14px; height: 14px; fill: #fff; }
.light .media { border-color: #d3d3ce; box-shadow: 0 40px 100px -50px rgba(0,0,0,.45); }
.caption { margin-top: 14px; display: flex; justify-content: space-between; gap: 16px; font: 400 13px/1.5 var(--mono); color: var(--grey-2); }

/* ---------- trust strip ---------- */
.trust { padding: 44px 0; border-top: 1px solid var(--line-d); border-bottom: 1px solid var(--line-d); background: var(--black); }
.trust .container { display: grid; grid-template-columns: 240px 1fr; gap: 40px; align-items: center; }
.trust p { margin: 0; font: 500 12px/1.6 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--grey-2); }
.logos { display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.logos img { height: 30px; width: auto; opacity: .78; transition: opacity .2s; }
.logos img:hover { opacity: 1; }
.logos .logo-finco { height: 30px; }
.logos .logo-nvidia { height: 26px; }

/* ---------- cards & grids ---------- */
.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.card {
  position: relative; padding: 30px; border-radius: var(--radius); background: var(--ink-2); border: 1px solid var(--line-d);
  transition: border-color .25s, transform .25s, background .25s;
}
.card:hover { border-color: #444; }
.light .card, .white .card { background: var(--white); border-color: var(--line-l); }
.light .card:hover, .white .card:hover { border-color: #b9b9b3; }
.card h3 { font: 650 19px/1.3 var(--sans); letter-spacing: -.01em; margin-bottom: 10px; }
.card p { margin: 0; font-size: 15.5px; line-height: 1.6; color: var(--grey-1); }
.light .card p, .white .card p { color: var(--grey-3); }
.card .num { font: 700 30px/1 var(--serif); color: var(--accent); margin-bottom: 26px; display: block; }
.light .card .num { color: var(--accent); }
.card .ic { width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--line-d2); display: grid; place-items: center; margin-bottom: 22px; }
.light .card .ic, .white .card .ic { border-color: var(--line-l); background: var(--paper); }
.card .ic svg { width: 20px; height: 20px; stroke: var(--accent); fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.light .card .ic svg, .white .card .ic svg { stroke: var(--ink); }
.tag { display: inline-flex; align-items: center; gap: 7px; padding: 6px 11px; border-radius: 999px; border: 1px solid var(--line-d2); font: 500 11.5px/1 var(--mono); color: var(--grey-1); letter-spacing: .04em; }
.light .tag, .white .tag { border-color: var(--line-l); color: var(--grey-3); background: var(--white); }
.tag.on { border-color: rgba(31,95,174,.6); color: var(--accent); background: var(--accent-soft); }
.light .tag.on { color: var(--accent-ink); background: #e9f1fb; border-color: #a9c8ec; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }

/* ---------- problem / stats ---------- */

/* ---------- flagship ---------- */
.flag-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.flag-split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 96px); align-items: start; margin-top: 56px; }
.flag-split .feature-list { margin: 0; }
.flag-split .lead { margin: 0 0 32px; }
.feature-list { list-style: none; margin: 30px 0 34px; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--line-d); }
.feature-list li { display: grid; grid-template-columns: 28px 1fr; gap: 12px; padding: 16px 0; border-bottom: 1px solid var(--line-d); font-size: 16px; color: var(--grey-1); }
.feature-list li b { color: var(--white); font-weight: 600; }
.feature-list li::before { content: ""; width: 9px; height: 9px; background: var(--accent); margin-top: 9px; }
.light .feature-list { border-color: var(--line-l); }
.light .feature-list li { border-color: var(--line-l); color: var(--grey-3); }
.light .feature-list li b { color: var(--ink); }

/* ---------- stack (platform) ---------- */
.stack-wrap { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(32px, 5vw, 80px); align-items: center; }
.stack-svg { width: 100%; max-width: 600px; margin: 0 auto; overflow: visible; }
.stack-svg .plate { transition: transform .35s cubic-bezier(.2,.8,.2,1); }
.stack-svg .plate polygon { transition: fill .3s, stroke .3s; }
.stack-svg .plate.active { transform: translateY(-8px); }
.stack-svg .plate.active .top { stroke: var(--accent); stroke-width: 2; }
.stack-svg text { font-family: var(--mono); font-size: 12.5px; letter-spacing: .1em; fill: var(--grey-3); }
.layers { display: grid; gap: 10px; }
.layer {
  display: grid; grid-template-columns: 56px 1fr; gap: 6px 18px; align-items: start; padding: 22px 24px; border-radius: 14px;
  background: var(--white); border: 1px solid var(--line-l); cursor: default; transition: border-color .25s, box-shadow .25s, transform .25s;
}
.layer .n { font: 700 28px/1 var(--serif); color: var(--accent); grid-row: span 2; }
.layer h3 { font: 650 17.5px/1.3 var(--sans); }
.layer h3 small { font: 500 12px var(--mono); color: var(--grey-3); margin-left: 8px; letter-spacing: .02em; }
.layer p { margin: 0; font-size: 15px; color: var(--grey-3); line-height: 1.55; }
.layer.active, .layer:hover { border-color: var(--ink); box-shadow: 0 16px 40px -24px rgba(0,0,0,.35); }
.layer.found { background: var(--ink); border-color: var(--ink); color: var(--white); }
.layer.found p { color: var(--grey-1); }
.layer.found h3 small { color: var(--accent); }
.layer.found .n { color: var(--accent); }
.stack-note { margin-top: 22px; font-style: italic; color: var(--grey-3); }

/* ---------- product showcase (tabs) ---------- */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; }
.tab {
  height: 42px; padding: 0 18px; border-radius: 999px; border: 1px solid var(--line-d2); background: transparent; cursor: pointer;
  font: 600 14px/1 var(--sans); color: #cfcfcf; transition: all .2s; display: inline-flex; align-items: center; gap: 8px;
}
.tab:hover { border-color: #666; color: #fff; }
.tab[aria-selected="true"] { background: var(--white); color: var(--ink); border-color: var(--white); }
.tab .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.showcase { display: grid; grid-template-columns: 1.45fr 1fr; gap: clamp(28px, 4vw, 56px); align-items: center; }
.panel[hidden] { display: none; }
.panel h3 { font: 700 clamp(28px, 3vw, 38px)/1.1 var(--serif); margin-bottom: 14px; }
.panel .kicker { font: 500 12px var(--mono); letter-spacing: .14em; color: var(--accent); text-transform: uppercase; margin-bottom: 14px; display: block; }
.panel p { color: var(--grey-1); margin: 0 0 22px; }
.panel ul { list-style: none; padding: 0; margin: 0 0 26px; display: grid; gap: 10px; }
.panel li { display: grid; grid-template-columns: 18px 1fr; gap: 10px; font-size: 15.5px; color: #d6d6d6; }
.panel li::before { content: "\2192"; color: var(--accent); font-family: var(--mono); }
.runs-on { display: inline-flex; align-items: center; gap: 9px; font: 500 12px var(--mono); color: var(--grey-2); letter-spacing: .06em; }
.runs-on i { width: 8px; height: 8px; background: var(--accent); display: inline-block; }

.mini-products { margin-top: 56px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.mini { padding: 24px; border-radius: 14px; border: 1px solid var(--line-d); background: var(--ink-2); }
.mini .lbl { font: 500 11px var(--mono); letter-spacing: .14em; color: var(--grey-2); text-transform: uppercase; }
.mini h4 { font: 650 18px/1.25 var(--sans); margin: 10px 0 8px; }
.mini p { margin: 0; font-size: 14.5px; color: var(--grey-1); line-height: 1.55; }

/* ---------- industries ---------- */
.ind { padding: 30px; border-top: 2px solid var(--ink); background: var(--white); border-radius: 0 0 var(--radius-s) var(--radius-s); }
.ind h3 { font: 700 24px/1.2 var(--serif); margin-bottom: 14px; }
.ind ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 9px; }
.ind li { font-size: 15px; color: var(--grey-3); padding-left: 18px; position: relative; line-height: 1.5; }
.ind li::before { content: ""; position: absolute; left: 0; top: 9px; width: 6px; height: 6px; background: var(--accent); }
.ind .tag { margin-top: 20px; }

/* ---------- process ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line-d); }
.step { padding: 32px 28px 8px 0; position: relative; }
.step::before { content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; background: var(--accent); }
.step .k { font: 500 12px var(--mono); letter-spacing: .14em; color: var(--grey-2); }
.step h3 { font: 700 26px/1.15 var(--serif); margin: 12px 0 12px; }
.step p { margin: 0; color: var(--grey-1); font-size: 15.5px; }
.step .tag { margin-top: 18px; }

/* ---------- team ---------- */
.team { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.person { padding: 0; overflow: hidden; }
.person img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; object-position: 50% 25%; filter: grayscale(.25) contrast(1.02); transition: filter .4s, transform .6s; }
.person:hover img { filter: none; transform: scale(1.02); }
.person .body { padding: 24px 26px 28px; }
.person h3 { font: 700 24px/1.2 var(--serif); }
.person .role { display: block; margin: 8px 0 14px; font: 500 11.5px/1.5 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
.person p { font-size: 15px; }

/* ---------- CTA / contact ---------- */
.cta-band { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 96px); align-items: start; }
.contact-points { margin-top: 36px; display: grid; gap: 0; border-top: 1px solid var(--line-d); }
.contact-points div { display: grid; grid-template-columns: 120px 1fr; padding: 16px 0; border-bottom: 1px solid var(--line-d); font-size: 15.5px; }
.contact-points span { font: 500 11.5px/1.9 var(--mono); letter-spacing: .12em; color: var(--grey-2); text-transform: uppercase; }
.contact-points a:hover { color: var(--accent); }
.cta-band > .contact-points { margin-top: 0; align-self: end; }

/* ---------- footer ---------- */
.footer { background: var(--black); border-top: 1px solid var(--line-d); padding: 72px 0 40px; font-size: 14.5px; }
.foot-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 40px; }
.footer h4 { font: 500 11.5px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--grey-2); margin-bottom: 16px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer a { color: #cfcfcf; } .footer a:hover { color: var(--white); }
.foot-tag { margin: 18px 0 0; color: var(--grey-2); max-width: 340px; }
.foot-base { margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--line-d); display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; color: #6f6f6f; font: 400 12.5px var(--mono); }

/* ---------- product page specifics ---------- */
.subhero { padding: calc(var(--nav-h) + clamp(48px, 8vw, 96px)) 0 clamp(56px, 7vw, 88px); background: var(--black); overflow: hidden; }
.badge-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 26px; }
.spec { width: 100%; border-collapse: collapse; font-size: 15.5px; }
.spec th, .spec td { text-align: left; padding: 18px 0; border-bottom: 1px solid var(--line-l); vertical-align: top; }
.spec th { width: 32%; font: 500 12px/1.8 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--grey-3); padding-right: 24px; }
.spec td { color: var(--ink); }
.router { display: grid; grid-template-columns: 1fr auto 1.2fr auto 1fr; gap: 16px; align-items: center; }
.router .node { padding: 24px; border-radius: 14px; border: 1px solid var(--line-l); background: var(--white); }
.router .node.hl { border: 2px solid var(--ink); }
.router .node b { display: block; font-size: 16px; margin-bottom: 6px; }
.router .node span { font-size: 14px; color: var(--grey-3); line-height: 1.5; display: block; }
.router .node .k { font: 500 11px var(--mono); letter-spacing: .14em; color: var(--accent-ink); text-transform: uppercase; margin-bottom: 10px; }
.router .arrow { font: 500 22px var(--mono); color: var(--grey-3); }
.router .split { display: grid; gap: 12px; }
.formf { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.formf .card { padding: 36px; }
.formf h3 { font: 700 28px/1.15 var(--serif); margin: 8px 0 12px; }
.formf ul { margin: 22px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.formf li { font-size: 15px; color: var(--grey-1); padding-left: 18px; position: relative; }
.formf li::before { content: ""; position: absolute; left: 0; top: 9px; width: 6px; height: 6px; background: var(--accent); }
.faq { border-top: 1px solid var(--line-l); }
.faq details { border-bottom: 1px solid var(--line-l); }
.faq summary { list-style: none; cursor: pointer; padding: 24px 0; display: flex; justify-content: space-between; gap: 20px; font: 600 18px/1.4 var(--sans); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 26px/1 var(--mono); color: var(--grey-3); transition: transform .25s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0 0 24px; max-width: 820px; color: var(--grey-3); }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; } .reveal.d2 { transition-delay: .16s; } .reveal.d3 { transition-delay: .24s; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-canvas { display: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .nav.open { height: auto; }
  .nav.open .container { flex-wrap: wrap; height: auto; padding-top: 12px; padding-bottom: 20px; }
  .nav.open .brand { height: 44px; }
  .nav.open .nav-links { display: flex; flex-direction: column; width: 100%; order: 3; margin: 8px 0 0; }
  .nav.open .nav-links a { padding: 12px 4px; font-size: 17px; border-bottom: 1px solid var(--line-l); border-radius: 0; }
  .nav.open .nav-cta { display: flex; order: 4; width: 100%; margin-top: 12px; }
  .g4, .mini-products { grid-template-columns: repeat(2, 1fr); }
  .flag-grid, .flag-split, .stack-wrap, .showcase, .cta-band { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .router { grid-template-columns: 1fr; }
  .router .arrow { transform: rotate(90deg); justify-self: center; }
  .hero-points { grid-template-columns: repeat(2, 1fr); }
  .trust .container { grid-template-columns: 1fr; gap: 22px; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .container { padding: 0 20px; }
  .g2, .g3, .g4, .team, .mini-products, .formf { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .sec-head { grid-template-columns: 1fr; }
  .sec-head .pixgrid, .hero-top .pixgrid { display: none; }
  .hero-top { grid-template-columns: 1fr; }

  .foot-grid { grid-template-columns: 1fr; }
  .media { border-radius: 12px; }
  .spec th { width: 40%; }
  .logos { justify-content: flex-start; gap: 28px 36px; }
  .layer h3 small { display: block; margin: 4px 0 0; }
}