@font-face {
  font-family: 'Manrope Variable';
  font-style: normal;
  font-display: swap;
  font-weight: 200 800;
  src: url('/seo/fonts/manrope-cyrillic-wght-normal.woff2') format('woff2-variations');
}
@font-face {
  font-family: 'Manrope Variable';
  font-style: normal;
  font-display: swap;
  font-weight: 200 800;
  src: url('/seo/fonts/manrope-latin-wght-normal.woff2') format('woff2-variations');
}
@font-face {
  font-family: 'JetBrains Mono Variable';
  font-style: normal;
  font-display: swap;
  font-weight: 100 800;
  src: url('/seo/fonts/jetbrains-mono-cyrillic-wght-normal.woff2') format('woff2-variations');
}
@font-face {
  font-family: 'JetBrains Mono Variable';
  font-style: normal;
  font-display: swap;
  font-weight: 100 800;
  src: url('/seo/fonts/jetbrains-mono-latin-wght-normal.woff2') format('woff2-variations');
}

:root {
  color-scheme: light;
  --canvas: #f5f4ef;
  --surface: #fbfaf7;
  --surface-bright: #fff;
  --ink: #121419;
  --ink-soft: #292d33;
  --muted: #69717f;
  --muted-light: #9299a4;
  --line: rgb(18 20 25 / 11%);
  --line-strong: rgb(18 20 25 / 20%);
  --blue: #175cff;
  --blue-bright: #2d6dff;
  --blue-soft: #e9f0ff;
  --green: #3ac979;
  --amber: #d99035;
  --copper: #df7048;
  --dark: #11161b;
  --dark-raised: #181e24;
  --dark-line: rgb(255 255 255 / 10%);
  --page: calc(100vw - 48px);
  --text: min(1120px, calc(100vw - 48px));
  --sans: 'Manrope Variable', Manrope, system-ui, sans-serif;
  --mono: 'JetBrains Mono Variable', ui-monospace, SFMono-Regular, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 105px; }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background:
    linear-gradient(rgb(18 20 25 / 4%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(18 20 25 / 4%) 1px, transparent 1px),
    radial-gradient(circle at 78% 0%, rgb(223 112 72 / 7%), transparent 32rem),
    var(--canvas);
  background-size: 72px 72px, 72px 72px, auto, auto;
  color: var(--ink);
  font: 400 16px/1.55 var(--sans);
  text-rendering: optimizeLegibility;
}
button, input { font: inherit; }
button, summary { cursor: pointer; }
a { color: inherit; text-decoration: none; }
code, pre { font-family: var(--mono); }
h1, h2, h3, p, dl, figure { margin-top: 0; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }
[id] { scroll-margin-top: 105px; }
::selection { background: var(--blue); color: #fff; }
:focus-visible { outline: 3px solid rgb(23 92 255 / 30%); outline-offset: 3px; }

.skip-link {
  position: fixed;
  top: -60px;
  left: 16px;
  z-index: 200;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
}
.skip-link:focus-visible { top: 12px; }

.site-header { position: fixed; inset: 14px 0 auto; z-index: 100; pointer-events: none; }
.header-inner {
  width: calc(100% - 32px);
  min-height: 62px;
  margin-inline: auto;
  padding: 9px 10px 9px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border: 1px solid rgb(18 20 25 / 9%);
  border-radius: 18px;
  background: rgb(251 250 247 / 96%);
  box-shadow: 0 14px 44px rgb(18 20 25 / 8%);
  backdrop-filter: blur(18px);
  pointer-events: auto;
}
.wordmark { display: inline-flex; align-items: center; gap: 9px; font-size: 17px; font-weight: 770; letter-spacing: -.045em; }
.wordmark-mark { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 10px; background: transparent url('/keydealer-mark.png') center/contain no-repeat; color: transparent; font-size: 0; font-weight: 800; }
.wordmark-context { margin-left: 2px; padding-left: 11px; border-left: 1px solid var(--line-strong); color: var(--muted); font-size: 13px; font-style: normal; font-weight: 680; letter-spacing: -.02em; }
.main-nav, .header-actions { display: flex; align-items: center; gap: 4px; }
.main-nav a, .header-login { padding: 10px 13px; border-radius: 10px; color: var(--muted); font-size: 13px; font-weight: 640; transition: color 160ms ease, background-color 160ms ease; }
.main-nav a:hover, .header-login:hover, .main-nav a[aria-current='page'] { color: var(--ink); background: rgb(18 20 25 / 5%); }

.button { min-height: 50px; padding: 0 21px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; border: 1px solid transparent; border-radius: 14px; font-size: 14px; font-weight: 720; letter-spacing: -.015em; transition: transform 160ms ease, background-color 160ms ease, box-shadow 160ms ease, border-color 160ms ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--blue); color: #fff; box-shadow: 0 12px 30px rgb(23 92 255 / 25%); }
.button-primary:hover { background: var(--blue-bright); box-shadow: 0 15px 36px rgb(23 92 255 / 30%); }
.button-ghost { border-color: var(--line); background: rgb(255 255 255 / 74%); color: var(--ink); }
.button-ghost:hover { border-color: var(--line-strong); background: #fff; }
.button-small { min-height: 42px; padding-inline: 17px; border-radius: 12px; font-size: 13px; }
.section-label, .eyebrow { margin-bottom: 19px; color: var(--blue); font: 720 10px/1.45 var(--mono); letter-spacing: .11em; }

main { padding-top: 98px; }
.breadcrumbs { width: var(--page); margin: 19px auto 12px; display: flex; align-items: center; gap: 9px; color: var(--muted-light); font: 600 10px/1 var(--mono); }
.breadcrumbs a:hover { color: var(--blue); }

.opus-hero {
  width: var(--page);
  min-height: 720px;
  margin: 0 auto 132px;
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(540px, 1.12fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgb(251 250 247 / 93%);
  box-shadow: 0 34px 90px rgb(18 20 25 / 13%);
}
.hero-copy { padding: 68px 42px 60px 66px; display: flex; flex-direction: column; justify-content: center; }
.eyebrow { color: #8a654e; }
.eyebrow > span { width: 7px; height: 7px; margin-right: 7px; display: inline-block; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgb(58 201 121 / 11%); }
.eyebrow code { color: var(--ink); font-size: .95em; }
.hero-copy h1 { max-width: 720px; margin-bottom: 28px; font-size: clamp(52px, 5.6vw, 88px); line-height: .96; letter-spacing: -.072em; }
.hero-lead { max-width: 660px; margin-bottom: 34px; color: var(--muted); font-size: 19px; line-height: 1.55; letter-spacing: -.025em; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 10px 14px; margin-bottom: 48px; }
.hero-primary-action { display: grid; gap: 8px; }
.hero-primary-action > small { padding-left: 3px; color: var(--muted); font-size: 10px; }
.hero-facts { margin: auto 0 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.hero-facts div { min-width: 0; padding: 22px 12px 0 0; }
.hero-facts div + div { padding-left: 18px; border-left: 1px solid var(--line); }
.hero-facts dt { margin-bottom: 7px; color: var(--muted-light); font: 650 9px/1.2 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.hero-facts dd { margin: 0; font-size: 16px; font-weight: 760; letter-spacing: -.025em; }
.hero-facts dd small { display: block; color: var(--muted); font-size: 10px; font-weight: 520; }
.hero-facts i { width: 7px; height: 7px; display: inline-block; border-radius: 50%; background: var(--green); }
.hero-visual { position: relative; margin: 0; min-height: 720px; overflow: hidden; background: #ede9e2; }
.hero-visual::after { content: ''; position: absolute; inset: 0; border-left: 1px solid var(--line); box-shadow: inset 0 0 100px rgb(18 20 25 / 7%); pointer-events: none; }
.hero-visual img { width: 100%; height: 100%; display: block; object-fit: contain; object-position: center; }
.hero-visual figcaption { position: absolute; left: 22px; right: 22px; bottom: 20px; z-index: 2; padding: 15px 17px; display: flex; justify-content: space-between; gap: 18px; border: 1px solid rgb(255 255 255 / 18%); border-radius: 12px; background: rgb(15 18 21 / 82%); color: #fff; backdrop-filter: blur(12px); }
.hero-visual figcaption span { color: #d9b796; font: 700 9px/1.4 var(--mono); letter-spacing: .11em; }
.hero-visual figcaption code { color: #c5ccd4; font-size: 10px; }

.decision-section, .price-decision, .model-profile, .request-section, .comparison-section, .source-section, .faq-section { width: var(--page); margin: 0 auto 150px; }
.decision-heading, .model-profile > header, .section-heading, .comparison-section > header { display: grid; grid-template-columns: .86fr 1.14fr; gap: 9%; align-items: end; margin-bottom: 48px; }
.decision-heading .section-label, .model-profile > header .section-label, .section-heading .section-label, .comparison-section > header .section-label { grid-column: 1 / -1; margin-bottom: -6px; }
.decision-heading h2, .model-profile > header h2, .section-heading h2, .comparison-section > header h2, .source-section h2, .faq-section h2 { margin-bottom: 0; font-size: clamp(42px, 5vw, 72px); line-height: .98; letter-spacing: -.065em; }
.decision-heading > p:last-child, .model-profile > header > p:last-child, .section-heading > p:last-child, .comparison-section > header > p:last-child { margin: 0; color: var(--muted); font-size: 18px; line-height: 1.65; }
.decision-grid { display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(420px, .82fr); border: 1px solid var(--line); background: var(--surface); }
.decision-grid figure { min-height: 720px; margin: 0; position: relative; overflow: hidden; border-right: 1px solid var(--line); }
.decision-grid figure img { width: 100%; height: 100%; display: block; object-fit: contain; filter: grayscale(1) contrast(1.03); background: #eeeae2; }
.decision-grid figcaption { position: absolute; inset: auto 20px 20px; padding: 12px 15px; background: rgb(255 255 255 / 90%); border: 1px solid var(--line); font: 650 10px/1.4 var(--mono); }
.decision-grid ol { margin: 0; padding: 0; list-style: none; }
.decision-grid li { min-height: 180px; padding: 34px; display: grid; grid-template-columns: 44px 1fr; gap: 18px; border-bottom: 1px solid var(--line); }
.decision-grid li:last-child { border-bottom: 0; }
.decision-grid li > span { color: var(--copper); font: 700 10px/1.3 var(--mono); }
.decision-grid h3 { margin-bottom: 10px; font-size: 21px; letter-spacing: -.035em; }
.decision-grid p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }

.price-decision { display: grid; grid-template-columns: 1.08fr .92fr; overflow: hidden; border: 1px solid rgb(23 92 255 / 18%); background: #edf2ff; box-shadow: 0 24px 70px rgb(23 92 255 / 9%); }
.price-decision-copy { padding: 58px 62px; }
.price-decision-copy h2 { max-width: 740px; margin-bottom: 24px; font-size: clamp(40px, 4.4vw, 66px); line-height: .98; letter-spacing: -.064em; }
.price-decision-copy > p:last-child { max-width: 720px; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.72; }
.price-decision-ledger { padding: 32px; display: grid; align-content: center; background: var(--blue); color: #fff; }
.price-decision-ledger > div { min-height: 118px; padding: 24px 0; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 6px 24px; border-bottom: 1px solid rgb(255 255 255 / 20%); }
.price-decision-ledger span { color: #c7d5ff; font: 700 9px/1.4 var(--mono); letter-spacing: .09em; }
.price-decision-ledger strong { grid-row: 1 / 3; grid-column: 2; font-size: clamp(32px, 3.2vw, 48px); line-height: 1; letter-spacing: -.06em; }
.price-decision-ledger small { color: #e0e7ff; font-size: 11px; }
.price-decision-ledger > p { margin: 24px 0 0; color: #eef2ff; font-size: 13px; line-height: 1.65; }

.profile-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); background: var(--surface); }
.profile-grid article { min-height: 270px; padding: 31px 28px; border-right: 1px solid var(--line); }
.profile-grid article:last-child { border-right: 0; }
.profile-grid article > span { display: block; margin-bottom: 54px; color: var(--copper); font: 700 10px/1 var(--mono); }
.profile-grid h3 { margin-bottom: 13px; font-size: 21px; letter-spacing: -.035em; }
.profile-grid p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
.native-specs { margin-top: 16px; padding: 26px; display: grid; grid-template-columns: 180px 180px 1fr; gap: 22px; align-items: center; border: 1px solid var(--line); background: #fff; }
.native-specs div { padding-right: 20px; border-right: 1px solid var(--line); }
.native-specs span { display: block; color: var(--muted-light); font: 650 8px/1.4 var(--mono); letter-spacing: .06em; }
.native-specs strong { display: block; margin: 8px 0 0; font-size: 35px; letter-spacing: -.06em; }
.native-specs small { color: var(--muted); }
.native-specs p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.native-specs p strong { display: inline; color: var(--ink); font-size: inherit; letter-spacing: inherit; }

.capability-ledger { width: var(--page); margin: 0 auto 150px; padding: 58px 62px 48px; color: #f5f7f9; background: linear-gradient(135deg, #101419, #182028 60%, #17191d); box-shadow: 0 30px 80px rgb(18 20 25 / 17%); }
.capability-ledger header { display: grid; grid-template-columns: 1.25fr .75fr; gap: 12%; margin-bottom: 42px; align-items: end; }
.capability-ledger .section-label { color: #8eacff; }
.capability-ledger h2 { max-width: 760px; margin-bottom: 0; font-size: clamp(40px, 4.4vw, 66px); line-height: .98; letter-spacing: -.06em; }
.capability-ledger header > p { margin: 0; color: #9ba6b1; font-size: 14px; line-height: 1.65; }
.capability-ledger code { color: #b5c7ff; }
.ledger-grid { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--dark-line); }
.ledger-grid > div + div { border-left: 1px solid var(--dark-line); }
.ledger-grid h3 { margin: 0; padding: 20px 22px; border-bottom: 1px solid var(--dark-line); color: #b8c1ca; font: 650 10px/1 var(--mono); letter-spacing: .08em; }
.ledger-grid h3 i { width: 7px; height: 7px; display: inline-block; margin-right: 8px; border-radius: 50%; background: var(--green); }
.unknown-list h3 i { background: #78828d; }
.ledger-grid p { margin: 0; min-height: 52px; padding: 14px 20px; display: grid; grid-template-columns: 24px 1fr auto; align-items: center; gap: 8px; border-bottom: 1px solid var(--dark-line); color: #e8ebee; font-size: 13px; }
.ledger-grid p:last-child { border-bottom: 0; }
.ledger-grid p > span { color: var(--green); font-family: var(--mono); }
.unknown-list p > span { color: #78828d; }
.ledger-grid p small { color: #78828d; font: 600 9px/1 var(--mono); text-transform: uppercase; }
.ledger-note { margin: 24px 0 0; color: #97a1ab; font-size: 12px; }

.reasoning-section { width: var(--page); margin: 0 auto 150px; display: grid; grid-template-columns: 1.2fr .8fr; align-items: stretch; border: 1px solid var(--line); background: var(--surface); }
.reasoning-section figure { min-height: 600px; margin: 0; position: relative; overflow: hidden; background: #171b1f; }
.reasoning-section figure img { width: 100%; height: 100%; display: block; object-fit: contain; filter: brightness(1.3) contrast(1.04); }
.reasoning-section figcaption { position: absolute; left: 20px; bottom: 20px; padding: 11px 14px; border: 1px solid rgb(255 255 255 / 14%); background: rgb(13 16 19 / 78%); color: #c8cdd2; font: 600 9px/1.4 var(--mono); }
.reasoning-section > div { padding: 56px 52px; display: flex; flex-direction: column; justify-content: center; }
.reasoning-section h2 { margin-bottom: 24px; font-size: clamp(38px, 4vw, 61px); line-height: 1; letter-spacing: -.06em; }
.reasoning-section p:not(.section-label) { color: var(--muted); font-size: 16px; line-height: 1.7; }
.reasoning-section ul { margin: 12px 0 0; padding: 0; list-style: none; }
.reasoning-section li { padding: 14px 0 14px 24px; position: relative; border-top: 1px solid var(--line); font-size: 13px; font-weight: 650; }
.reasoning-section li::before { content: '↳'; position: absolute; left: 0; color: var(--copper); font-family: var(--mono); }

.code-workbench { overflow: hidden; border: 1px solid rgb(255 255 255 / 10%); border-radius: 18px; background: #10151a; color: #f2f5f7; box-shadow: 0 28px 70px rgb(18 20 25 / 15%); }
.code-tabs { padding: 11px; display: flex; gap: 5px; border-bottom: 1px solid var(--dark-line); background: #161c22; }
.code-tabs button { min-height: 38px; padding: 0 14px; border: 0; border-radius: 9px; background: transparent; color: #85909b; font-size: 12px; font-weight: 680; }
.code-tabs button:hover, .code-tabs button.is-active { background: #222b34; color: #fff; }
.code-tabs [data-copy-code] { margin-left: auto; border: 1px solid var(--dark-line); }
.code-workbench pre { min-height: 430px; margin: 0; padding: 34px 38px; overflow: auto; color: #d8e1e9; font-size: 13px; line-height: 1.75; tab-size: 2; }
.code-workbench footer { padding: 14px 19px; display: flex; justify-content: space-between; gap: 18px; border-top: 1px solid var(--dark-line); color: #7f8a95; font: 600 9px/1.4 var(--mono); }
.code-workbench footer i { width: 7px; height: 7px; display: inline-block; margin-right: 7px; border-radius: 50%; background: var(--green); }

.cost-section { width: var(--page); margin: 0 auto 150px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.cost-copy, .cost-calculator { min-height: 430px; padding: 48px; border: 1px solid var(--line); background: var(--surface); }
.cost-copy h2 { max-width: 600px; margin-bottom: 24px; font-size: clamp(39px, 4.5vw, 66px); line-height: .98; letter-spacing: -.065em; }
.cost-copy > p:not(.section-label) { max-width: 630px; color: var(--muted); }
.cost-example { margin: 28px 0 17px; padding: 19px; display: grid; grid-template-columns: 100px 1fr auto; gap: 16px; align-items: center; border: 1px solid var(--line); background: #fff; }
.cost-example span { color: var(--muted-light); font: 700 9px/1 var(--mono); }
.cost-example strong { font-size: 13px; }
.cost-example code { color: var(--blue); font-size: 18px; font-weight: 760; }
.cost-copy > small { color: var(--muted); font-size: 11px; }
.cost-calculator { display: grid; align-content: center; gap: 16px; background: #fff; }
.cost-calculator label { color: var(--muted); font-size: 12px; font-weight: 650; }
.cost-calculator input { width: 100%; height: 62px; margin-top: 7px; padding: 0 17px; border: 1px solid var(--line); border-radius: 12px; background: var(--canvas); color: var(--ink); font: 680 17px/1 var(--mono); }
.cost-calculator > div { margin-top: 6px; padding: 23px; display: grid; border: 1px solid rgb(23 92 255 / 18%); background: var(--blue-soft); }
.cost-calculator > div span { color: var(--muted); font-size: 11px; }
.cost-calculator > div strong { margin: 7px 0; color: var(--blue); font-size: 35px; letter-spacing: -.06em; }
.cost-calculator > div small { color: var(--muted); font-size: 10px; }

.comparison-section > header { grid-template-columns: 1fr 1fr; }
.comparison-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.comparison-card { min-height: 370px; padding: 30px; display: flex; flex-direction: column; border: 1px solid var(--line); background: var(--surface); transition: transform 170ms ease, border-color 170ms ease, box-shadow 170ms ease; }
.comparison-card:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: 0 20px 50px rgb(18 20 25 / 9%); }
.comparison-card.is-current { background: var(--dark); color: #fff; }
.comparison-card > span { margin-bottom: 60px; color: var(--blue); font: 700 9px/1 var(--mono); letter-spacing: .1em; }
.comparison-card.is-current > span { color: #8eacff; }
.comparison-card h3 { margin-bottom: 14px; font-size: 30px; letter-spacing: -.055em; }
.comparison-card > p { min-height: 68px; color: var(--muted); font-size: 13px; }
.comparison-card.is-current > p { color: #9aa6b1; }
.comparison-card dl { margin: 28px 0 26px; display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
.comparison-card.is-current dl { border-color: var(--dark-line); }
.comparison-card dl div { padding-top: 16px; }
.comparison-card dt { color: var(--muted-light); font: 650 9px/1 var(--mono); }
.comparison-card dd { margin: 7px 0 0; font-size: 13px; font-weight: 700; }
.comparison-card > small { margin-top: auto; color: var(--muted); font-size: 11px; }
.comparison-card > small i { float: right; font-style: normal; }

.not-for-section { width: var(--page); margin: 0 auto 150px; display: grid; grid-template-columns: .78fr 1.22fr; gap: 9%; }
.not-for-section h2 { margin-bottom: 0; font-size: clamp(43px, 5vw, 72px); line-height: .98; letter-spacing: -.065em; }
.not-for-section dl { margin: 0; border-top: 1px solid var(--line-strong); }
.not-for-section dl div { padding: 25px 0; display: grid; grid-template-columns: .68fr 1.32fr; gap: 8%; border-bottom: 1px solid var(--line); }
.not-for-section dt { font-size: 16px; font-weight: 720; letter-spacing: -.025em; }
.not-for-section dd { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }

.source-section, .faq-section { display: grid; grid-template-columns: .72fr 1.28fr; gap: 9%; }
.source-section > div:last-child, .faq-section > div:last-child { border-top: 1px solid var(--line-strong); }
.source-section a { min-height: 106px; display: grid; grid-template-columns: 140px 1fr 20px; align-items: center; gap: 14px; border-bottom: 1px solid var(--line); transition: color 160ms ease; }
.source-section a:hover { color: var(--blue); }
.source-section a span { color: var(--muted); font: 650 9px/1.4 var(--mono); }
.source-section a strong { font-size: 17px; letter-spacing: -.025em; }
.source-section a i { font-style: normal; }
.faq-section details { border-bottom: 1px solid var(--line); }
.faq-section details:not([open]) > p { display: none; }
.faq-section summary { min-height: 104px; padding: 0; display: grid; grid-template-columns: 1fr 24px; align-items: center; gap: 20px; list-style: none; font-size: 17px; font-weight: 720; letter-spacing: -.025em; }
.faq-section summary::-webkit-details-marker { display: none; }
.faq-section summary span { color: var(--muted); font: 500 22px/1 var(--mono); transition: transform 160ms ease; }
.faq-section details[open] summary span { transform: rotate(45deg); }
.faq-section details p { max-width: 800px; margin: -10px 0 28px; color: var(--muted); font-size: 14px; line-height: 1.7; }

.final-cta { width: var(--page); margin: 0 auto 26px; padding: 58px 62px; display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 60px; border-radius: 24px; background: var(--blue); color: #fff; box-shadow: 0 28px 70px rgb(23 92 255 / 22%); }
.final-cta .section-label { color: #c8d6ff; }
.final-cta h2 { max-width: 860px; margin-bottom: 18px; font-size: clamp(40px, 4.5vw, 66px); line-height: .98; letter-spacing: -.06em; }
.final-cta p:not(.section-label) { max-width: 720px; margin-bottom: 0; color: #d8e2ff; }
.final-cta > div:last-child { display: grid; gap: 15px; text-align: center; }
.final-cta .button-primary { background: #fff; color: var(--blue); box-shadow: none; }
.final-cta > div:last-child > a:last-child { color: #e7edff; font-size: 12px; text-decoration: underline; text-underline-offset: 4px; }

body > footer { width: var(--page); margin: 0 auto; padding: 42px 0 56px; display: grid; grid-template-columns: 1fr auto; gap: 28px; border-top: 1px solid var(--line); }
body > footer > div p { max-width: 440px; margin: 15px 0 0; color: var(--muted); font-size: 12px; }
body > footer nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 9px 20px; }
body > footer nav a { color: var(--muted); font-size: 12px; }
body > footer nav a:hover { color: var(--blue); }
.footer-meta { grid-column: 1 / -1; margin: 0; color: var(--muted-light); font-size: 10px; }

@media (max-width: 1120px) {
  .opus-hero { grid-template-columns: 1fr 1fr; }
  .hero-copy { padding: 52px 38px; }
  .hero-copy h1 { font-size: clamp(48px, 6vw, 68px); }
  .profile-grid { grid-template-columns: 1fr 1fr; }
  .profile-grid article { border-bottom: 1px solid var(--line); }
  .profile-grid article:nth-child(2) { border-right: 0; }
  .native-specs { grid-template-columns: 150px 150px 1fr; }
}

@media (max-width: 900px) {
  :root { --page: min(100% - 28px, 760px); --text: min(100% - 28px, 760px); }
  .header-inner { min-height: 58px; }
  .main-nav { display: none; }
  .wordmark-context, .header-login { display: none; }
  .opus-hero { min-height: auto; grid-template-columns: 1fr; margin-bottom: 92px; }
  .hero-copy { padding: 54px 35px 42px; }
  .hero-visual { min-height: 540px; border-top: 1px solid var(--line); }
  .decision-section, .price-decision, .model-profile, .request-section, .comparison-section, .source-section, .faq-section, .capability-ledger, .reasoning-section, .cost-section, .not-for-section { margin-bottom: 100px; }
  .decision-heading, .model-profile > header, .section-heading, .comparison-section > header, .source-section, .faq-section, .not-for-section { grid-template-columns: 1fr; gap: 22px; }
  .decision-grid, .price-decision, .reasoning-section, .cost-section { grid-template-columns: 1fr; }
  .decision-grid figure { min-height: 560px; border-right: 0; border-bottom: 1px solid var(--line); }
  .capability-ledger { padding: 42px 34px 36px; }
  .capability-ledger header { grid-template-columns: 1fr; gap: 22px; }
  .native-specs { grid-template-columns: 1fr 1fr; }
  .native-specs p { grid-column: 1 / -1; }
  .reasoning-section figure { min-height: 460px; }
  .comparison-grid { grid-template-columns: 1fr; }
  .comparison-card { min-height: 330px; }
  .comparison-card > span { margin-bottom: 35px; }
  .source-section h2, .faq-section h2 { margin-bottom: 24px; }
  .final-cta { padding: 44px 36px; grid-template-columns: 1fr; align-items: start; }
}

@media (max-width: 620px) {
  body { background-size: 48px 48px, 48px 48px, auto, auto; }
  main { padding-top: 84px; }
  .site-header { inset: 8px 0 auto; }
  .header-inner { width: calc(100% - 16px); padding: 7px 8px 7px 12px; border-radius: 15px; }
  .button-small { min-height: 44px; padding-inline: 13px; }
  .wordmark { min-height: 44px; }
  .breadcrumbs { min-height: 44px; overflow-x: auto; white-space: nowrap; }
  .breadcrumbs a { min-height: 44px; display: inline-flex; align-items: center; }
  .opus-hero { border-radius: 18px; }
  .hero-copy { padding: 39px 23px 31px; }
  .hero-copy h1 { font-size: clamp(43px, 13.8vw, 62px); }
  .hero-lead { font-size: 16px; }
  .hero-actions { display: grid; }
  .hero-primary-action { width: 100%; }
  .hero-primary-action .button, .hero-actions > .button { width: 100%; }
  .hero-facts { grid-template-columns: 1fr 1fr; }
  .hero-facts div:last-child { grid-column: 1 / -1; margin-top: 16px; padding-left: 0; border-left: 0; }
  .hero-visual { min-height: 400px; }
  .hero-visual img { object-position: center; }
  .hero-visual figcaption { left: 12px; right: 12px; bottom: 12px; display: grid; }
  .decision-heading h2, .model-profile > header h2, .section-heading h2, .comparison-section > header h2, .source-section h2, .faq-section h2, .not-for-section h2 { font-size: 43px; }
  .decision-grid figure { min-height: 410px; }
  .decision-grid li { min-height: auto; padding: 27px 21px; grid-template-columns: 35px 1fr; }
  .price-decision-copy { padding: 38px 23px; }
  .price-decision-copy h2 { font-size: 42px; }
  .price-decision-ledger { padding: 24px 23px 29px; }
  .price-decision-ledger > div { min-height: 102px; }
  .profile-grid { grid-template-columns: 1fr; }
  .profile-grid article { min-height: 230px; border-right: 0; }
  .profile-grid article > span { margin-bottom: 35px; }
  .native-specs { padding: 20px; }
  .native-specs div { padding-right: 11px; }
  .capability-ledger { width: 100%; padding: 40px 20px 32px; }
  .ledger-grid { grid-template-columns: 1fr; }
  .ledger-grid > div + div { border-left: 0; border-top: 1px solid var(--dark-line); }
  .ledger-grid p { grid-template-columns: 20px 1fr; }
  .ledger-grid p small { grid-column: 2; }
  .reasoning-section > div, .cost-copy, .cost-calculator { padding: 33px 23px; }
  .reasoning-section figure { min-height: 340px; }
  .code-tabs { overflow-x: auto; }
  .code-tabs button { flex: 0 0 auto; }
  .code-tabs [data-copy-code] { margin-left: 12px; }
  .code-workbench pre { min-height: 500px; padding: 26px 20px; font-size: 11px; }
  .cost-copy, .cost-calculator { min-height: 0; }
  .cost-example { grid-template-columns: 1fr auto; }
  .cost-example span { grid-column: 1 / -1; }
  .comparison-card { padding: 25px; }
  .not-for-section dl div { grid-template-columns: 1fr; gap: 10px; }
  .source-section a { grid-template-columns: 105px 1fr 16px; }
  .faq-section summary { min-height: 90px; font-size: 15px; }
  .final-cta { width: 100%; margin-bottom: 16px; padding: 38px 23px; border-radius: 0; }
  body > footer { grid-template-columns: 1fr; }
  body > footer nav { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}