:root {
  --black: #1d1d1f;
  --gray: #6e6e73;
  --hairline: #d2d2d7;
  --soft: #f5f5f7;
  --white: #ffffff;
  --blue: #0066cc;
  --space: 8px;
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--black);
  background: var(--white);
  font-size: 17px;
  line-height: 1.53;
  letter-spacing: -0.012em;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select { font: inherit; }
button, a, input, select, summary { -webkit-tap-highlight-color: transparent; }
img { max-width: 100%; }
[hidden] { display: none !important; }
.wrap { width: min(1200px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 12px 16px; color: var(--white); background: var(--blue); border-radius: 8px; }
.skip-link:focus { top: 16px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: 48px;
  background: rgba(255, 255, 255, .82);
  border-bottom: 1px solid rgba(29, 29, 31, .10);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}
.nav { min-height: 48px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { min-height: 44px; display: inline-flex; align-items: center; gap: 8px; color: var(--black); font-size: 14px; font-weight: 600; letter-spacing: -.01em; }
.brand:hover { text-decoration: none; }
.brand-mark { position: relative; width: 22px; height: 30px; display: inline-block; border: 2px solid currentColor; border-radius: 5px; }
.brand-mark::before { content: ""; position: absolute; width: 8px; height: 2px; top: 3px; left: 5px; background: currentColor; border-radius: 2px; }
.brand-mark span { position: absolute; width: 10px; height: 10px; left: 4px; bottom: 4px; border: 2px solid var(--blue); border-radius: 50%; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a { min-height: 44px; display: inline-flex; align-items: center; padding: 0 12px; color: var(--black); font-size: 12px; letter-spacing: .01em; }
.nav-links a:hover { color: var(--blue); text-decoration: none; }
.nav-toggle { display: none; min-height: 44px; min-width: 44px; border: 0; color: var(--black); background: transparent; }

.hero { padding: 112px 0 104px; text-align: center; }
.hero-center { max-width: 960px; }
.eyebrow { margin: 0 0 12px; color: var(--blue); font-size: 14px; line-height: 1.25; font-weight: 600; letter-spacing: .01em; }
.hero h1, .page-hero h1 { margin: 0; font-weight: 600; letter-spacing: -.055em; line-height: .98; }
.hero h1 { font-size: clamp(56px, 8vw, 96px); }
.hero .lede { max-width: 760px; margin: 24px auto 0; }
.lede { color: var(--gray); font-size: clamp(21px, 2.5vw, 28px); line-height: 1.25; letter-spacing: -.025em; }
.hero-actions { margin-top: 32px; display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.hero-center .hero-actions { justify-content: center; }
.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border: 1px solid var(--blue);
  border-radius: 999px;
  color: var(--white);
  background: var(--blue);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.2;
  cursor: pointer;
}
.button:hover { opacity: .82; text-decoration: none; }
.button.alt { color: var(--blue); background: transparent; }
.button.small { min-height: 44px; padding: 8px 16px; font-size: 14px; }
.text-link, .more { min-height: 44px; display: inline-flex; align-items: center; color: var(--blue); font-size: 17px; }

.dark { color: var(--white); background: var(--black); }
.soft { background: var(--soft); }
.product-stage { min-height: 680px; display: grid; align-items: center; overflow: hidden; }
.stage-grid { display: grid; grid-template-columns: minmax(320px, 1fr) minmax(360px, .9fr); align-items: center; gap: 80px; }
.stage-copy h2, .section-intro h2, .section-head h2, .callout h2 { margin: 0; font-size: clamp(40px, 5.2vw, 64px); line-height: 1.02; letter-spacing: -.045em; font-weight: 600; }
.stage-copy p:not(.eyebrow) { color: var(--hairline); font-size: 21px; max-width: 520px; }
.display-assembly { position: relative; width: min(430px, 84vw); aspect-ratio: .52; margin: 48px auto; border: 2px solid var(--hairline); border-radius: 56px; background: var(--black); }
.display-assembly::before { content: ""; position: absolute; inset: 18px; border: 1px solid var(--gray); border-radius: 40px; }
.speaker { position: absolute; top: 32px; left: 50%; width: 72px; height: 5px; transform: translateX(-50%); border-radius: 999px; background: var(--gray); }
.screen-line { position: absolute; left: 56px; height: 4px; border-radius: 4px; background: var(--blue); }
.line-one { top: 42%; width: 56%; }
.line-two { top: 47%; width: 42%; }
.line-three { top: 52%; width: 30%; }
.flex { position: absolute; left: calc(100% + 2px); width: 88px; height: 72px; border: solid var(--gray); border-width: 2px 2px 2px 0; }
.flex-one { top: 52%; }
.flex-two { top: 66%; width: 120px; }

.section { padding: 112px 0; }
.section-intro { max-width: 800px; margin: 0 auto 56px; text-align: center; }
.section-intro > p:not(.eyebrow), .section-head > p { color: var(--gray); font-size: 21px; }
.section-head { margin-bottom: 48px; display: grid; grid-template-columns: 1.25fr .75fr; align-items: end; gap: 48px; }
.feature-tiles, .card-grid, .tools-grid { display: grid; gap: 16px; }
.feature-tiles, .card-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.feature-tile, .card, .tool-card { min-width: 0; border-radius: 24px; }
.feature-tile { min-height: 420px; display: flex; flex-direction: column; align-items: flex-start; padding: 40px; background: var(--soft); }
.feature-tile h3 { margin: auto 0 8px; font-size: 32px; line-height: 1.08; letter-spacing: -.035em; font-weight: 600; }
.feature-tile p { margin: 0 0 16px; color: var(--gray); }
.step { color: var(--gray); font-size: 14px; font-weight: 600; }
.tools-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.tool-card { min-height: 360px; display: flex; flex-direction: column; padding: 40px; color: var(--black); background: var(--white); }
.tool-card:hover { text-decoration: none; }
.tool-card h3 { margin: 0 0 8px; font-size: 32px; line-height: 1.1; letter-spacing: -.035em; font-weight: 600; }
.tool-card p { color: var(--gray); }
.tool-kicker { color: var(--blue); font-size: 14px; font-weight: 600; }
.tool-card div { margin-top: auto; }
.tool-card .arrow { min-width: 44px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; align-self: flex-end; margin-top: 16px; border: 1px solid var(--hairline); border-radius: 50%; color: var(--blue); font-size: 28px; }
.stat-line { margin: 40px 0 0; color: var(--gray); text-align: center; }
.stat-line strong { color: var(--black); font-weight: 600; }
.callout { padding: 64px; display: flex; align-items: center; justify-content: space-between; gap: 48px; border-radius: 32px; background: var(--soft); }
.callout > div { max-width: 760px; }
.callout p:not(.eyebrow) { color: var(--gray); font-size: 19px; }

.page-hero { padding: 88px 0 72px; text-align: center; background: var(--soft); }
.page-hero .wrap { max-width: 980px; }
.page-hero h1 { margin-top: 24px; font-size: clamp(48px, 7vw, 80px); }
.page-hero .lede { max-width: 820px; margin: 24px auto 0; }
.breadcrumbs { color: var(--gray); font-size: 13px; }
.breadcrumbs a { color: var(--gray); min-height: 44px; display: inline-flex; align-items: center; }

.filter-bar, .calculator { padding: 32px; border-radius: 24px; background: var(--soft); }
.filter-bar { margin-bottom: 40px; display: grid; grid-template-columns: 2fr 1fr; gap: 16px; }
.field { display: grid; gap: 8px; }
.field label { font-size: 14px; font-weight: 600; }
input, select { min-height: 48px; width: 100%; padding: 10px 14px; border: 1px solid var(--hairline); border-radius: 12px; color: var(--black); background: var(--white); }
input:focus, select:focus, button:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }
.model-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.model-card { min-height: 248px; display: flex; flex-direction: column; padding: 32px; border: 1px solid var(--hairline); border-radius: 24px; color: var(--black); background: var(--white); }
.model-card:hover { border-color: var(--blue); text-decoration: none; }
.model-card h3 { margin: auto 0 4px; font-size: 28px; line-height: 1.1; letter-spacing: -.03em; font-weight: 600; }
.model-card p, .model-year { margin: 0; color: var(--gray); font-size: 14px; }
.badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.badge, .type { display: inline-flex; align-items: center; min-height: 28px; padding: 4px 10px; border: 1px solid var(--hairline); border-radius: 999px; color: var(--gray); font-size: 12px; font-weight: 600; }
.model-card .more { margin-top: 16px; }

.content-grid { display: grid; grid-template-columns: minmax(0, 760px) minmax(240px, 320px); justify-content: center; align-items: start; gap: 64px; }
.prose { min-width: 0; }
.prose h2 { margin: 64px 0 16px; font-size: clamp(32px, 4vw, 48px); line-height: 1.08; letter-spacing: -.035em; font-weight: 600; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 0 0 8px; font-size: 24px; line-height: 1.15; letter-spacing: -.02em; font-weight: 600; }
.prose p, .prose li { color: var(--black); }
.prose li { margin: 8px 0; }
.prose ul, .prose ol { padding-left: 24px; }
.article-deck { margin: 0 0 56px; color: var(--gray) !important; font-size: 24px; line-height: 1.35; letter-spacing: -.02em; }
.section-answer { font-size: 19px; }
.source-note { margin: 24px 0; padding: 20px 24px; border: 1px solid var(--hairline); border-radius: 16px; color: var(--gray) !important; font-size: 15px; }
.source-note strong { color: var(--black); }
.evidence-links { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 20px 0; }
.evidence-links a { display: inline-flex; align-items: center; min-height: 44px; font-weight: 600; }
.claim-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin: 24px 0 48px; }
.claim-card { padding: 24px; border: 1px solid var(--hairline); border-radius: 20px; background: var(--white); }
.claim-card h3 { margin: 0 0 12px; font-size: 15px; color: var(--gray); }
.claim-card p { margin: 0 0 16px; }
.claim-card .claim-source { margin-bottom: 0; font-size: 14px; color: var(--gray); }
.notice { margin: 32px 0; padding: 24px; border-left: 4px solid var(--blue); background: var(--soft); }
.notice.warn { border-left-color: var(--black); }
.spec-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin: 32px 0; overflow: hidden; border: 1px solid var(--hairline); border-radius: 16px; background: var(--hairline); }
.spec-grid div { min-height: 112px; display: flex; flex-direction: column; justify-content: center; padding: 16px; background: var(--white); }
.spec-grid span { color: var(--gray); font-size: 13px; }
.spec-grid strong { margin-top: 4px; font-size: 16px; font-weight: 600; }
.table-wrap { width: 100%; margin: 32px 0; overflow-x: auto; border: 1px solid var(--hairline); border-radius: 16px; }
table { width: 100%; min-width: 680px; border-collapse: collapse; font-size: 15px; }
caption { padding: 16px; border-bottom: 1px solid var(--hairline); color: var(--gray); background: var(--soft); text-align: left; font-size: 14px; }
th, td { padding: 16px; border-bottom: 1px solid var(--hairline); text-align: left; vertical-align: top; }
thead th { background: var(--soft); font-size: 13px; }
tbody th { width: 24%; font-weight: 600; }
.table-source { min-height: 44px; display: inline-flex; align-items: center; color: var(--blue); font-size: 12px; font-weight: 400; }
tr:last-child th, tr:last-child td { border-bottom: 0; }
.detailed-list { counter-reset: guide; list-style: none; padding: 0 !important; }
.detailed-list li { position: relative; min-height: 48px; margin: 0; padding: 16px 0 16px 48px; border-bottom: 1px solid var(--hairline); }
.detailed-list li::before { counter-increment: guide; content: counter(guide); position: absolute; left: 0; top: 14px; width: 32px; height: 32px; display: grid; place-items: center; border: 1px solid var(--hairline); border-radius: 50%; color: var(--blue); font-size: 13px; font-weight: 600; }
.scenario-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.scenario-grid > div { padding: 24px; background: var(--soft); }
.scenario-grid > div:first-child { border-radius: 16px 0 0 16px; }
.scenario-grid > div:last-child { border-radius: 0 16px 16px 0; }
.scenario-grid p { margin: 0; font-size: 15px; }
.faq { border-top: 1px solid var(--hairline); }
.faq details { border-bottom: 1px solid var(--hairline); }
.faq summary { min-height: 56px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 600; }
.faq summary::after { content: "+"; color: var(--blue); font-size: 24px; }
.faq details[open] summary::after { content: "−"; }
.faq p { margin: 0 0 24px; color: var(--gray); }
.guide-end { margin-top: 64px; padding: 40px; border-radius: 24px; background: var(--soft); }
.guide-end h2 { margin-top: 0; }
.aside { position: sticky; top: 72px; display: grid; gap: 16px; }
.meta-card, .toc-card { padding: 24px; border: 1px solid var(--hairline); border-radius: 20px; background: var(--white); }
.meta-card h3 { margin: 0 0 16px; font-size: 24px; line-height: 1.12; letter-spacing: -.025em; font-weight: 600; }
.meta-row { padding: 12px 0; display: grid; grid-template-columns: 1fr 1.25fr; gap: 12px; border-bottom: 1px solid var(--hairline); font-size: 13px; }
.meta-row span { color: var(--gray); }
.meta-row strong { text-align: right; font-weight: 600; }
.disclosure { color: var(--gray); font-size: 13px; }
.toc-card { display: grid; gap: 4px; }
.toc-card a { min-height: 44px; display: flex; align-items: center; border-bottom: 1px solid var(--hairline); font-size: 14px; }
.toc-card a:last-child { border-bottom: 0; }

.card { padding: 32px; color: var(--black); background: var(--soft); }
.card h3 { margin: 24px 0 8px; font-size: 28px; line-height: 1.1; letter-spacing: -.03em; font-weight: 600; }
.card p { color: var(--gray); }
.dark .card { color: var(--white); background: rgba(255,255,255,.08); }
.dark .card p { color: var(--hairline); }
.num { color: var(--blue); font-size: 14px; font-weight: 600; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.result { margin-top: 24px; padding: 24px; border-radius: 16px; color: var(--white); background: var(--black); }
.result strong { display: block; font-size: 28px; font-weight: 600; }
.result span { color: var(--hairline); }
.checklist { border-top: 1px solid var(--hairline); }
.check-row { min-height: 72px; display: grid; grid-template-columns: 32px 1fr; align-items: center; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--hairline); cursor: pointer; }
.check-row input { min-width: 24px; width: 24px; min-height: 24px; accent-color: var(--blue); }
.source-list { margin-top: 32px; border-top: 1px solid var(--hairline); }
.source-item { min-height: 88px; display: grid; grid-template-columns: 100px 1fr auto; align-items: center; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--hairline); }
.source-item small { color: var(--gray); }
.empty { padding: 40px; color: var(--gray); text-align: center; }

.site-footer { padding: 72px 0 32px; color: var(--black); background: var(--soft); }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; }
.footer-grid h3 { margin: 8px 0 12px; font-size: 13px; font-weight: 600; }
.footer-grid > div:not(:first-child) a { min-height: 36px; display: flex; align-items: center; color: var(--gray); font-size: 13px; }
.footer-bottom { margin-top: 48px; padding-top: 24px; display: flex; justify-content: space-between; gap: 24px; border-top: 1px solid var(--hairline); color: var(--gray); font-size: 12px; }

@media (max-width: 900px) {
  .wrap { width: min(100% - 32px, 760px); }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-links { position: absolute; inset: 48px 0 auto; display: none; padding: 16px; border-bottom: 1px solid var(--hairline); background: var(--white); }
  .nav-links.open { display: grid; }
  .nav-links a { font-size: 17px; }
  .stage-grid, .section-head, .content-grid { grid-template-columns: 1fr; }
  .stage-grid { padding: 72px 0; gap: 32px; text-align: center; }
  .stage-copy p:not(.eyebrow) { margin-inline: auto; }
  .display-assembly { max-height: 560px; }
  .feature-tiles, .card-grid, .tools-grid, .model-grid, .claim-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .aside { position: static; order: -1; }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  .wrap { width: min(100% - 32px, 560px); }
  .brand-text { max-width: 172px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .hero { padding: 80px 0 72px; }
  .hero h1 { font-size: 48px; }
  .page-hero { padding: 64px 0 56px; }
  .page-hero h1 { font-size: 48px; }
  .section { padding: 72px 0; }
  .product-stage { min-height: auto; }
  .display-assembly { max-height: 440px; border-radius: 40px; }
  .display-assembly::before { border-radius: 28px; }
  .flex { display: none; }
  .feature-tiles, .card-grid, .tools-grid, .model-grid, .claim-grid, .filter-bar, .form-grid, .spec-grid, .scenario-grid { grid-template-columns: 1fr; }
  .feature-tile, .tool-card { min-height: 320px; padding: 32px; }
  .callout { padding: 32px; align-items: flex-start; flex-direction: column; }
  .scenario-grid > div:first-child, .scenario-grid > div:last-child { border-radius: 0; }
  .scenario-grid > div:first-child { border-radius: 16px 16px 0 0; }
  .scenario-grid > div:last-child { border-radius: 0 0 16px 16px; }
  .source-item { grid-template-columns: 1fr auto; }
  .source-item .type { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
}

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

@media (prefers-reduced-transparency: reduce), (prefers-contrast: more) {
  .site-header, .nav-links { background: var(--white); backdrop-filter: none; -webkit-backdrop-filter: none; }
}

@media print {
  .site-header, .site-footer, .no-print, .page-hero, .toc-card { display: none !important; }
  .section { padding: 0; }
  .wrap { width: 100%; }
  .content-grid { display: block; }
  .meta-card, .calculator, .check-row { break-inside: avoid; }
  body { font-size: 12pt; }
}