/* Black Ocean Technologies — design system
   Industrial / spec-sheet language: warm lab grey, near-black ink, one signal accent,
   hairline grids, monospace labels. */

:root {
  --paper: #ECEBE7;
  --paper-2: #E3E2DD;
  --card: #F6F5F2;
  --ink: #111213;
  --ink-2: #3A3C3E;
  --ink-3: #6E7072;
  --ink-4: #9C9E9F;
  --rule: #CFCDC7;
  --rule-2: #B9B7B0;
  --abyss: #0C1114;      /* dark sections — the "black ocean" */
  --abyss-2: #151B1F;
  --abyss-rule: #2A3236;
  --abyss-ink: #E9E8E4;
  --abyss-ink-3: #8D9396;
  --signal: #FF4F12;     /* single accent — used sparingly */
  --signal-ink: #FFFFFF;
  --ok: #1F8A5B;
  --err: #C2321E;

  --sans: "Inter Tight", "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --body: "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --gutter: clamp(16px, 3vw, 40px);
  --max: 1440px;
  --nav-h: 64px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--nav-h) + 16px); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: var(--signal); color: #fff; }

.skip-link { position: absolute; left: -9999px; top: 0; z-index: 100; padding: 12px 16px; background: var(--ink); color: var(--paper); }
.skip-link:focus { left: 0; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }
main:focus { outline: none; }

.wrap { width: min(100% - 2 * var(--gutter), var(--max)); margin-inline: auto; }

/* ------------------------------------------------------------ type */
.mono, .label { font-family: var(--mono); }
.label {
  font-size: 11px; line-height: 1.4; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3);
  display: inline-flex; align-items: center; gap: 10px;
}
.label .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--signal); flex: none; }
.label .idx { color: var(--ink); }
.display {
  font-family: var(--sans); font-weight: 500;
  font-size: clamp(44px, 7.4vw, 124px); line-height: .94; letter-spacing: -.045em; margin: 0;
}
.h1 { font-family: var(--sans); font-weight: 500; font-size: clamp(38px, 5.4vw, 84px); line-height: .98; letter-spacing: -.04em; margin: 0; }
.h2 { font-family: var(--sans); font-weight: 500; font-size: clamp(30px, 3.6vw, 54px); line-height: 1.02; letter-spacing: -.035em; margin: 0; }
.h3 { font-family: var(--sans); font-weight: 500; font-size: clamp(20px, 1.7vw, 26px); line-height: 1.15; letter-spacing: -.02em; margin: 0; }
.h4 { font-family: var(--sans); font-weight: 600; font-size: 17px; line-height: 1.3; letter-spacing: -.01em; margin: 0; }
.lead { font-size: clamp(18px, 1.5vw, 22px); line-height: 1.45; color: var(--ink-2); letter-spacing: -.01em; margin: 0; max-width: 46ch; }
.muted { color: var(--ink-3); }
.signal { color: var(--signal); }
p { margin: 0 0 1em; }

/* ------------------------------------------------------------ buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  height: 48px; padding: 0 22px; border-radius: 2px; border: 1px solid transparent;
  font-family: var(--mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; font-weight: 500;
  cursor: pointer; white-space: nowrap; transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}
.btn .arr { transition: transform .18s ease; }
.btn:hover .arr { transform: translateX(3px); }
.btn-signal { background: var(--signal); color: var(--signal-ink); }
.btn-signal:hover { background: #E8400A; }
.btn-ink { background: var(--ink); color: var(--paper); }
.btn-ink:hover { background: #2a2c2e; }
.btn-line { border-color: var(--ink); color: var(--ink); }
.btn-line:hover { background: var(--ink); color: var(--paper); }
.dark .btn-line { border-color: var(--abyss-ink); color: var(--abyss-ink); }
.dark .btn-line:hover { background: var(--abyss-ink); color: var(--abyss); }
.btn-sm { height: 38px; padding: 0 16px; font-size: 11px; }

.textlink { font-family: var(--mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; display: inline-flex; gap: 10px; align-items: center; border-bottom: 1px solid currentColor; padding-bottom: 3px; }
.textlink:hover { color: var(--signal); }

.prose a, .inline-link { color: inherit; text-decoration: underline; text-decoration-color: var(--signal); text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
.prose a:hover, .inline-link:hover { color: var(--signal); }

/* ------------------------------------------------------------ nav */
.topbar {
  position: sticky; top: 0; z-index: 50; height: var(--nav-h);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid var(--rule);
}
.topbar .wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.logo-mark {
  width: 30px; height: 30px; background: currentColor; flex: none;
  -webkit-mask: url(/assets/logo.png) center / contain no-repeat; mask: url(/assets/logo.png) center / contain no-repeat;
}
.brand-name { font-family: var(--sans); font-weight: 600; font-size: 16px; letter-spacing: -.02em; line-height: 1; }
.brand-name span { display: block; font-family: var(--mono); font-weight: 400; font-size: 9.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin-top: 4px; }

.menu { display: flex; align-items: center; gap: 2px; list-style: none; margin: 0; padding: 0; }
.menu > li { position: relative; }
.menu > li > a {
  display: inline-flex; align-items: center; gap: 6px; height: var(--nav-h); padding: 0 14px;
  font-size: 14px; font-weight: 500; color: var(--ink-2); letter-spacing: -.005em;
}
.menu > li > a:hover, .menu > li > a[aria-current="page"] { color: var(--ink); }
.menu > li > a[aria-current="page"]::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: -1px; height: 2px; background: var(--signal); }
.menu .caret { width: 8px; height: 8px; opacity: .55; }
.dropdown {
  position: absolute; top: calc(var(--nav-h) - 1px); left: 0; min-width: 300px;
  background: var(--card); border: 1px solid var(--rule); box-shadow: 0 24px 48px -24px rgba(17,18,19,.25);
  padding: 8px; list-style: none; margin: 0;
  opacity: 0; visibility: hidden; transform: translateY(-4px); transition: opacity .16s ease, transform .16s ease, visibility .16s;
}
.menu > li:hover .dropdown, .menu > li:focus-within .dropdown { opacity: 1; visibility: visible; transform: none; }
.dropdown a { display: flex; gap: 14px; align-items: baseline; padding: 11px 12px; font-size: 14px; color: var(--ink-2); }
.dropdown a:hover { background: var(--paper); color: var(--ink); }
.dropdown .mono { font-size: 10.5px; color: var(--ink-4); }
.nav-cta { display: flex; align-items: center; gap: 10px; }
.burger { display: none; width: 42px; height: 42px; border: 1px solid var(--rule-2); background: transparent; border-radius: 2px; align-items: center; justify-content: center; cursor: pointer; }
.burger span { display: block; width: 16px; height: 1.5px; background: var(--ink); position: relative; }
.burger span::before, .burger span::after { content: ""; position: absolute; left: 0; width: 16px; height: 1.5px; background: var(--ink); transition: transform .2s ease; }
.burger span::before { top: -5px; } .burger span::after { top: 5px; }
body.nav-open .burger span { background: transparent; }
body.nav-open .burger span::before { transform: translateY(5px) rotate(45deg); }
body.nav-open .burger span::after { transform: translateY(-5px) rotate(-45deg); }
.mobile-nav { display: none; }

@media (max-width: 1080px) {
  .menu, .nav-cta .btn { display: none; }
  .burger { display: inline-flex; }
  .mobile-nav {
    display: block; position: fixed; inset: var(--nav-h) 0 0 0; z-index: 49; background: var(--paper);
    padding: 24px var(--gutter) 40px; overflow-y: auto;
    opacity: 0; visibility: hidden; transition: opacity .2s ease, visibility .2s;
  }
  body.nav-open { overflow: hidden; }
  body.nav-open .mobile-nav { opacity: 1; visibility: visible; }
  .mobile-nav a.top { display: flex; justify-content: space-between; padding: 18px 0; border-bottom: 1px solid var(--rule); font-family: var(--sans); font-size: 26px; letter-spacing: -.03em; font-weight: 500; }
  .mobile-nav .sub { padding: 8px 0 14px 0; border-bottom: 1px solid var(--rule); }
  .mobile-nav .sub a { display: block; padding: 8px 0; color: var(--ink-2); font-size: 15px; }
  .mobile-nav .btn { width: 100%; margin-top: 28px; }
}

/* ------------------------------------------------------------ sections */
section { position: relative; }
.sec { padding: clamp(72px, 9vw, 140px) 0; }
.sec-sm { padding: clamp(48px, 6vw, 88px) 0; }
.rule-top { border-top: 1px solid var(--rule); }
.dark { background: var(--abyss); color: var(--abyss-ink); }
.dark .label, .dark .muted { color: var(--abyss-ink-3); }
.dark .label .idx { color: var(--abyss-ink); }
.dark .lead { color: #C9CBCB; }
.dark .rule-top, .dark.rule-top { border-color: var(--abyss-rule); }

.sec-head { display: grid; grid-template-columns: minmax(180px, 3fr) 9fr; gap: 24px var(--gutter); margin-bottom: clamp(40px, 5vw, 72px); align-items: start; }
.sec-head > .label { padding-top: 12px; }
.sec-head .h2 { max-width: 20ch; }
.sec-head .lead { margin-top: 24px; }
@media (max-width: 860px) { .sec-head { grid-template-columns: 1fr; } }

.grid-12 { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--gutter); }

/* ------------------------------------------------------------ hero */
.hero { padding: clamp(56px, 7vw, 104px) 0 0; overflow: hidden; }
.hero-meta { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px 32px; padding-bottom: 28px; border-bottom: 1px solid var(--rule); margin-bottom: clamp(40px, 5vw, 72px); }
.hero .display em { font-style: normal; color: var(--ink-3); }
.hero-grid { display: grid; grid-template-columns: 7fr 5fr; gap: var(--gutter); align-items: end; margin-top: clamp(36px, 4vw, 56px); }
.hero-grid .lead { max-width: 52ch; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.hero-proof { border-left: 1px solid var(--rule); padding-left: 24px; display: grid; gap: 18px; }
.hero-proof div { display: grid; grid-template-columns: 26px 1fr; gap: 10px; font-size: 14px; color: var(--ink-2); line-height: 1.4; }
.hero-proof .mono { font-size: 11px; color: var(--signal); padding-top: 2px; }
@media (max-width: 960px) { .hero-grid { grid-template-columns: 1fr; } .hero-proof { border-left: 0; padding-left: 0; border-top: 1px solid var(--rule); padding-top: 24px; } }

/* Hero board illustration */
.board-stage { margin-top: clamp(56px, 7vw, 96px); border-top: 1px solid var(--rule); position: relative; }
.board-stage .specbar { display: flex; justify-content: space-between; gap: 16px; padding: 14px 0; font-family: var(--mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); flex-wrap: wrap; }
.board-svg { width: 100%; height: auto; color: var(--ink); }
.board-svg .trace { fill: none; stroke: currentColor; stroke-width: 1.2; opacity: .55; }
.board-svg .pulse { fill: none; stroke: var(--signal); stroke-width: 2; stroke-dasharray: 26 1400; stroke-linecap: round; animation: pulse 6s linear infinite; }
.board-svg .outline { fill: none; stroke: currentColor; stroke-width: 1.2; }
.board-svg .pad { fill: var(--paper); stroke: currentColor; stroke-width: 1.2; }
.board-svg .chip { fill: var(--ink); }
.board-svg .chip-l { fill: var(--card); stroke: currentColor; stroke-width: 1.2; }
.board-svg .txt { font-family: var(--mono); font-size: 10px; letter-spacing: .08em; fill: var(--ink-3); text-transform: uppercase; }
.board-svg .txt-ink { fill: var(--paper); }
.board-svg .call { stroke: var(--ink-3); stroke-width: 1; fill: none; stroke-dasharray: 2 3; }
@keyframes pulse { from { stroke-dashoffset: 1426; } to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) { .board-svg .pulse { animation: none; opacity: 0; } }

/* ------------------------------------------------------------ ticker */
.ticker { border-block: 1px solid var(--rule); overflow: hidden; background: var(--paper); }
.ticker-track { display: flex; width: max-content; animation: tick 48s linear infinite; }
.ticker-item { display: inline-flex; align-items: center; gap: 18px; padding: 18px 28px; font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); white-space: nowrap; }
.ticker-item::after { content: ""; width: 6px; height: 6px; background: var(--signal); border-radius: 50%; margin-left: 28px; }
@keyframes tick { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .ticker-track { animation: none; flex-wrap: wrap; width: auto; justify-content: center; } .ticker-item[aria-hidden] { display: none; } }

/* ------------------------------------------------------------ index list (services) */
.index-list { border-top: 1px solid var(--rule); list-style: none; margin: 0; padding: 0; }
.dark .index-list, .dark .index-row { border-color: var(--abyss-rule); }
.index-row { display: grid; grid-template-columns: 3fr 4fr 4fr 1fr; gap: var(--gutter); padding: 32px 0; border-bottom: 1px solid var(--rule); align-items: baseline; transition: background-color .2s ease; }
a.index-row:hover .h3 { color: var(--signal); }
.index-row .arrow { justify-self: end; font-family: var(--mono); transition: transform .2s ease; }
a.index-row:hover .arrow { transform: translateX(4px); color: var(--signal); }
.index-row p { margin: 0; color: var(--ink-3); }
.dark .index-row p { color: var(--abyss-ink-3); }
@media (max-width: 860px) { .index-row { grid-template-columns: 1fr; gap: 8px; } .index-row .arrow { justify-self: start; } }

/* ------------------------------------------------------------ cards */
.cards { display: grid; gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.cards-3 { grid-template-columns: repeat(3, 1fr); }
.cards-2 { grid-template-columns: repeat(2, 1fr); }
.cards-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1080px) { .cards-4 { grid-template-columns: repeat(2, 1fr); } .cards-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 680px) { .cards-4, .cards-3, .cards-2 { grid-template-columns: 1fr; } }
.card { background: var(--paper); padding: clamp(24px, 2.4vw, 36px); display: flex; flex-direction: column; gap: 16px; min-height: 100%; }
.card p { color: var(--ink-2); margin: 0; font-size: 15px; }
a.card { transition: background-color .2s ease; }
a.card:hover { background: var(--card); }
a.card:hover .h3 { color: var(--signal); }
.card .foot { margin-top: auto; padding-top: 12px; display: flex; justify-content: space-between; align-items: center; }
.dark .cards { background: var(--abyss-rule); border-color: var(--abyss-rule); }
.dark .card { background: var(--abyss); }
.dark .card p { color: #BFC2C3; }
.dark a.card:hover { background: var(--abyss-2); }

/* Work tiles */
.work-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--gutter); }
.work-tile { grid-column: span 2; display: flex; flex-direction: column; gap: 16px; }
.work-tile.lg { grid-column: span 3; }
@media (max-width: 1080px) { .work-tile, .work-tile.lg { grid-column: span 3; } }
@media (max-width: 680px) { .work-tile, .work-tile.lg { grid-column: span 6; } }
.work-visual { aspect-ratio: 4 / 3; background: var(--card); border: 1px solid var(--rule); position: relative; overflow: hidden; color: var(--ink); }
.work-tile.lg .work-visual { aspect-ratio: 16 / 10; }
.work-visual svg { position: absolute; inset: 0; width: 100%; height: 100%; transition: transform .6s cubic-bezier(.2,.7,.2,1); }
.work-tile:hover .work-visual svg { transform: scale(1.03); }
.work-visual .tag { position: absolute; top: 14px; left: 14px; z-index: 1; }
.work-visual .code { position: absolute; top: 14px; right: 14px; z-index: 1; font-family: var(--mono); font-size: 11px; color: var(--ink-3); }
.work-tile .h3 { transition: color .2s ease; }
.work-tile:hover .h3 { color: var(--signal); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-family: var(--mono); font-size: 10.5px; letter-spacing: .05em; text-transform: uppercase; padding: 5px 9px; border: 1px solid var(--rule-2); color: var(--ink-2); border-radius: 2px; background: transparent; }
.dark .chip { border-color: var(--abyss-rule); color: #BFC2C3; }
.chip-solid { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.dark .work-visual { background: var(--abyss-2); border-color: var(--abyss-rule); color: var(--abyss-ink); }

/* Illustration primitives (work visuals) */
.ill .ln { fill: none; stroke: currentColor; stroke-width: 1.1; }
.ill .ln-2 { fill: none; stroke: currentColor; stroke-width: 1; opacity: .35; }
.ill .fl { fill: currentColor; }
.ill .bg { fill: var(--paper); stroke: currentColor; stroke-width: 1.1; }
.ill .sig { fill: var(--signal); }
.ill .sig-ln { fill: none; stroke: var(--signal); stroke-width: 1.6; }
.dark .ill .bg { fill: var(--abyss); }

/* ------------------------------------------------------------ partnership diagram */
.flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: stretch; gap: 0; border: 1px solid var(--abyss-rule); }
.flow-node { padding: clamp(24px, 3vw, 40px); display: flex; flex-direction: column; gap: 14px; min-height: 280px; }
.flow-node.hi { background: var(--abyss-2); }
.flow-node .h3 { color: var(--abyss-ink); }
.flow-node ul { list-style: none; margin: auto 0 0; padding: 0; display: grid; gap: 8px; }
.flow-node li { font-size: 14px; color: #BFC2C3; display: flex; gap: 10px; }
.flow-node li::before { content: "—"; color: var(--abyss-ink-3); }
.flow-arrow { display: flex; align-items: center; justify-content: center; width: 56px; border-inline: 1px solid var(--abyss-rule); color: var(--signal); font-family: var(--mono); }
@media (max-width: 960px) {
  .flow { grid-template-columns: 1fr; }
  .flow-node { min-height: 0; }
  .flow-arrow { width: auto; height: 44px; border-inline: 0; border-block: 1px solid var(--abyss-rule); transform: rotate(0); }
  .flow-arrow span { transform: rotate(90deg); }
}

/* ------------------------------------------------------------ numbered steps */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--rule); }
.steps li { padding: 28px 24px 8px 0; border-right: 1px solid var(--rule); padding-left: 24px; }
.steps li:first-child { padding-left: 0; }
.steps li:last-child { border-right: 0; }
.steps .n { font-family: var(--mono); font-size: 12px; color: var(--signal); display: block; margin-bottom: 40px; }
.steps p { color: var(--ink-3); font-size: 14.5px; margin-top: 12px; }
@media (max-width: 1080px) { .steps { grid-template-columns: 1fr 1fr; } .steps li, .steps li:first-child { padding: 24px 0; border-right: 0; border-bottom: 1px solid var(--rule); } .steps li:nth-child(odd) { padding-right: 24px; } .steps .n { margin-bottom: 16px; } }
@media (max-width: 680px) { .steps { grid-template-columns: 1fr; } }

/* ------------------------------------------------------------ founder */
.founder { display: grid; grid-template-columns: 5fr 7fr; gap: var(--gutter); align-items: stretch; }
.portrait { aspect-ratio: 4 / 5; background: var(--paper-2); border: 1px solid var(--rule); position: relative; display: flex; align-items: flex-end; padding: 18px; overflow: hidden; }
.portrait img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.portrait .ph { position: absolute; inset: 0; display: grid; place-items: center; color: var(--ink-4); }
.portrait .label { position: relative; z-index: 1; background: var(--paper); padding: 6px 10px; }
.quote { font-family: var(--sans); font-weight: 400; font-size: clamp(24px, 2.5vw, 38px); line-height: 1.18; letter-spacing: -.025em; margin: 0; }
.spec-table { width: 100%; border-collapse: collapse; margin-top: 32px; }
.spec-table th, .spec-table td { text-align: left; padding: 14px 0; border-bottom: 1px solid var(--rule); vertical-align: top; font-size: 15px; }
.spec-table th { font-family: var(--mono); font-weight: 400; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); width: 34%; padding-right: 16px; padding-top: 17px; }
.dark .spec-table th, .dark .spec-table td { border-color: var(--abyss-rule); }
.portrait-panel { background: var(--abyss); border-color: var(--abyss); color: var(--abyss-ink); flex-direction: column; justify-content: space-between; align-items: stretch; padding: clamp(24px, 3vw, 40px); }
.portrait-panel .logo-mark { width: 72%; height: auto; aspect-ratio: 1; align-self: flex-end; margin: -6% -10% 0 0; opacity: .9; color: #1E292E; }
.portrait-panel .pp-meta { display: grid; gap: 10px; }
.portrait-panel .label { color: var(--abyss-ink-3); background: none; padding: 0; }
.portrait-panel .pp-name { font-family: var(--sans); font-weight: 500; font-size: clamp(32px, 3.4vw, 52px); letter-spacing: -.04em; line-height: 1; }
.portrait-panel.on-dark { background: var(--abyss-2); border-color: var(--abyss-rule); }
.portrait-panel.on-dark .logo-mark { color: #263238; }
@media (max-width: 860px) { .founder { grid-template-columns: 1fr; } .portrait { max-width: 420px; } }

/* ------------------------------------------------------------ page header */
.page-head { padding: clamp(48px, 6vw, 96px) 0 clamp(40px, 5vw, 72px); border-bottom: 1px solid var(--rule); }
.crumbs { display: flex; gap: 10px; flex-wrap: wrap; font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: clamp(32px, 4vw, 56px); }
.crumbs a:hover { color: var(--ink); }
.crumbs .sep { color: var(--ink-4); }
.page-head-grid { display: grid; grid-template-columns: 8fr 4fr; gap: var(--gutter); align-items: end; }
.page-head .lead { margin-top: 28px; }
.page-head-aside { border-left: 1px solid var(--rule); padding-left: 24px; }
@media (max-width: 960px) { .page-head-grid { grid-template-columns: 1fr; } .page-head-aside { border-left: 0; padding-left: 0; } }
.dark.page-head { border-color: var(--abyss-rule); }
.dark .crumbs { color: var(--abyss-ink-3); }
.dark .crumbs a:hover { color: var(--abyss-ink); }
.dark .page-head-aside { border-color: var(--abyss-rule); }

/* ------------------------------------------------------------ two-col article / detail */
.split { display: grid; grid-template-columns: minmax(180px, 3fr) 9fr; gap: var(--gutter); }
.split + .split { margin-top: clamp(48px, 6vw, 88px); }
.split .side { position: relative; }
.split .side .sticky { position: sticky; top: calc(var(--nav-h) + 32px); }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; gap: 16px; } }
.body-lg { font-size: clamp(18px, 1.35vw, 21px); line-height: 1.5; letter-spacing: -.01em; color: var(--ink-2); max-width: 60ch; }
.body-lg p { margin-bottom: 1.1em; }
.dark .body-lg { color: #C9CBCB; }

.ticks { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.ticks li { display: grid; grid-template-columns: 44px 1fr; gap: 8px; padding: 16px 0; border-bottom: 1px solid var(--rule); font-size: 16px; color: var(--ink-2); }
.ticks li .mono { font-size: 11px; color: var(--signal); padding-top: 4px; }
.dark .ticks, .dark .ticks li { border-color: var(--abyss-rule); }
.dark .ticks li { color: #C9CBCB; }

.cap-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 var(--gutter); border-top: 1px solid var(--rule); }
.cap-list > div { padding: 24px 0; border-bottom: 1px solid var(--rule); display: grid; grid-template-columns: 44px 1fr; gap: 8px; }
.cap-list .mono { font-size: 11px; color: var(--ink-4); padding-top: 5px; }
.cap-list p { color: var(--ink-3); margin: 8px 0 0; font-size: 15px; }
@media (max-width: 760px) { .cap-list { grid-template-columns: 1fr; } }

/* ------------------------------------------------------------ prose (articles) */
.prose { font-size: 18px; line-height: 1.7; color: var(--ink-2); max-width: 68ch; }
.prose h2 { font-family: var(--sans); font-weight: 500; font-size: clamp(24px, 2.2vw, 32px); letter-spacing: -.03em; line-height: 1.15; color: var(--ink); margin: 2em 0 .6em; }
.prose ul { padding-left: 1.1em; }
.prose li { margin-bottom: .6em; }
.prose strong { color: var(--ink); font-weight: 600; }
.author-card { display: grid; grid-template-columns: 56px 1fr; gap: 16px; align-items: start; padding: 24px 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); margin-top: 56px; max-width: 68ch; }
.author-card .av { width: 56px; height: 56px; background: var(--ink); color: var(--paper); display: grid; place-items: center; font-family: var(--mono); font-size: 14px; }
.author-card p { margin: 6px 0 0; font-size: 14.5px; color: var(--ink-3); }

/* ------------------------------------------------------------ FAQ */
.faq { border-top: 1px solid var(--rule); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: 1fr 32px; gap: 16px; padding: 26px 0; font-family: var(--sans); font-size: clamp(18px, 1.6vw, 23px); letter-spacing: -.02em; font-weight: 500; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .pm { width: 32px; height: 32px; border: 1px solid var(--rule-2); display: grid; place-items: center; font-family: var(--mono); font-size: 14px; transition: background-color .2s ease, color .2s ease; }
.faq summary .pm::before { content: "+"; }
.faq details[open] summary .pm { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.faq details[open] summary .pm::before { content: "−"; }
.faq .ans { padding: 0 48px 28px 0; color: var(--ink-2); font-size: 17px; max-width: 70ch; }

/* ------------------------------------------------------------ CTA band */
.cta-band { padding: clamp(80px, 10vw, 160px) 0; }
.cta-band .display { max-width: 14ch; }
.cta-row { display: flex; justify-content: space-between; align-items: end; gap: 32px; flex-wrap: wrap; margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--abyss-rule); }

/* ------------------------------------------------------------ forms */
.form { display: grid; gap: 0; border-top: 1px solid var(--rule); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 var(--gutter); }
@media (max-width: 680px) { .form-row { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; padding: 18px 0 12px; border-bottom: 1px solid var(--rule); }
.field label, .field .flabel { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 8px; }
.field input, .field select, .field textarea {
  border: 0; background: transparent; padding: 6px 0; font-size: 18px; letter-spacing: -.01em; outline: none; width: 100%; border-radius: 0;
}
.field textarea { resize: vertical; min-height: 120px; line-height: 1.5; }
.field select { appearance: none; -webkit-appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(135deg, var(--ink) 50%, transparent 50%); background-position: calc(100% - 12px) 55%, calc(100% - 7px) 55%; background-size: 5px 5px; background-repeat: no-repeat; cursor: pointer; }
.field:focus-within { border-bottom-color: var(--ink); }
.field:focus-within label { color: var(--signal); }
.field input::placeholder, .field textarea::placeholder { color: var(--ink-4); }
.radio-grid { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 4px; }
.radio-grid label { margin: 0; cursor: pointer; position: relative; }
.radio-grid input { position: absolute; left: 0; top: 0; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.radio-grid span { display: inline-block; padding: 9px 13px; border: 1px solid var(--rule-2); font-family: var(--body); font-size: 14px; letter-spacing: 0; text-transform: none; color: var(--ink-2); transition: all .15s ease; }
.radio-grid input:checked + span { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.radio-grid input:focus-visible + span { outline: 2px solid var(--signal); outline-offset: 2px; }
.check { display: flex; gap: 12px; align-items: flex-start; padding: 18px 0; font-size: 14px; color: var(--ink-2); cursor: pointer; }
.check input { width: 18px; height: 18px; accent-color: var(--ink); margin-top: 1px; flex: none; }
.hp { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }
.form-foot { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding-top: 24px; }
.form-note { font-size: 13px; color: var(--ink-3); max-width: 48ch; }
.form-status { font-size: 15px; padding: 16px 18px; border: 1px solid var(--rule); margin-top: 20px; display: none; }
.form-status.show { display: block; }
.form-status.ok { border-color: var(--ok); color: var(--ok); }
.form-status.err { border-color: var(--err); color: var(--err); }
.ts-slot:empty { display: none; }
.ts-slot { padding-top: 18px; }
.dark .field { border-color: var(--abyss-rule); }
.dark .form { border-color: var(--abyss-rule); }
.dark .field label { color: var(--abyss-ink-3); }
.dark .field input { color: var(--abyss-ink); }
.dark .field:focus-within { border-bottom-color: var(--abyss-ink); }

.inline-form { display: flex; gap: 0; border: 1px solid var(--ink); background: var(--card); }
.inline-form input[type=email] { flex: 1; min-width: 0; border: 0; background: transparent; padding: 0 18px; height: 52px; font-size: 16px; outline: none; }
.inline-form .btn { height: 52px; border-radius: 0; }
.dark .inline-form { border-color: var(--abyss-ink-3); background: transparent; }
.dark .inline-form input { color: var(--abyss-ink); }
@media (max-width: 520px) { .inline-form { flex-direction: column; } .inline-form .btn { width: 100%; } }

/* ------------------------------------------------------------ contact page */
.contact-grid { display: grid; grid-template-columns: 7fr 4fr; gap: calc(var(--gutter) * 2); }
.contact-aside { display: grid; gap: 32px; align-content: start; }
.contact-aside .block { border-top: 1px solid var(--rule); padding-top: 18px; }
.contact-aside .block p { margin: 10px 0 0; color: var(--ink-2); font-size: 15px; }
@media (max-width: 960px) { .contact-grid { grid-template-columns: 1fr; } }

/* ------------------------------------------------------------ checklist */
.checklist-sec { border-top: 1px solid var(--rule); padding: 32px 0; display: grid; grid-template-columns: 4fr 8fr; gap: var(--gutter); }
.checklist-sec ol { list-style: none; margin: 0; padding: 0; counter-reset: c; }
.checklist-sec li { display: grid; grid-template-columns: 28px 1fr; gap: 12px; padding: 10px 0; border-bottom: 1px dashed var(--rule-2); font-size: 16px; }
.checklist-sec li::before { content: ""; width: 16px; height: 16px; border: 1.5px solid var(--ink); margin-top: 4px; }
@media (max-width: 760px) { .checklist-sec { grid-template-columns: 1fr; } }
@media print {
  .topbar, .site-foot, .no-print, .mobile-nav { display: none !important; }
  body { background: #fff; }
  .checklist-sec { break-inside: avoid; padding: 16px 0; }
  .page-head { padding: 0 0 16px; }
}

/* ------------------------------------------------------------ footer */
.site-foot { background: var(--abyss); color: var(--abyss-ink); padding: clamp(64px, 7vw, 104px) 0 32px; }
.foot-top { display: grid; grid-template-columns: 5fr 7fr; gap: var(--gutter); padding-bottom: 56px; border-bottom: 1px solid var(--abyss-rule); }
.foot-top .h3 { max-width: 22ch; }
.foot-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gutter); }
.foot-cols h4 { font-family: var(--mono); font-weight: 400; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--abyss-ink-3); margin: 0 0 16px; }
.foot-cols ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.foot-cols a { font-size: 14px; color: #C9CBCB; }
.foot-cols a:hover { color: #fff; }
.foot-sub { margin-top: 28px; }
.foot-sub p { font-size: 14px; color: var(--abyss-ink-3); margin: 0 0 14px; max-width: 44ch; }
.wordmark { font-family: var(--sans); font-weight: 500; font-size: clamp(56px, 13.4vw, 220px); line-height: .8; letter-spacing: -.06em; margin: clamp(48px, 6vw, 88px) 0 28px; color: var(--abyss-ink); white-space: nowrap; }
.wordmark span { color: var(--abyss-ink-3); }
.foot-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px 24px; font-family: var(--mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--abyss-ink-3); padding-top: 24px; border-top: 1px solid var(--abyss-rule); }
.foot-bottom a:hover { color: var(--abyss-ink); }
@media (max-width: 960px) { .foot-top { grid-template-columns: 1fr; } .foot-cols { grid-template-columns: 1fr 1fr; } }

/* ------------------------------------------------------------ utility */
.mt-0 { margin-top: 0; } .mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; } .mt-4 { margin-top: 40px; } .mt-5 { margin-top: 64px; }
.flex { display: flex; } .gap-2 { gap: 16px; } .wrap-f { flex-wrap: wrap; } .between { justify-content: space-between; } .center { align-items: center; }
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }