@layer reset, base, layout, components, alternate, responsive;
@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  body, h1, h2, h3, p, figure { margin: 0; }
  button, input { font: inherit; }
  button, a { -webkit-tap-highlight-color: transparent; }
  img { max-width: 100%; height: auto; display: block; }
  button { color: inherit; }
  [hidden] { display: none !important; }
}
@layer base {
  :root { color-scheme: dark; --bg: #111719; --surface: #172023; --surface-raised: #1c282b; --ink: #f3f7f6; --muted: #a5b5b8; --line: #2a373b; --accent: #94eff0; --accent-strong: #17bec2; --accent-bg: #17393b; --button-ink: #093335; --soft: #151d20; --amber: #f0cf8f; --shadow: #00000035; --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif; font-family: var(--font); font-size: 16px; }
  :root[data-theme='light'] { color-scheme: light; --bg: #f7faf9; --surface: #ffffff; --surface-raised: #edf3f2; --ink: #142b30; --muted: #536970; --line: #d3dfdd; --accent: #007b7d; --accent-strong: #007b7d; --accent-bg: #e0f3ef; --button-ink: #ffffff; --soft: #eef4f2; --amber: #865914; --shadow: #153c4210; }
  html { scroll-padding-top: 110px; }
  body { background: var(--bg); color: var(--ink); line-height: 1.65; }
  a { color: inherit; text-decoration: none; text-underline-offset: .25em; }
  button { cursor: pointer; }
  a, button, summary { touch-action: manipulation; }
  :focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
  ::selection { background: var(--accent); color: var(--bg); }
  h1, h2, h3 { overflow-wrap: break-word; line-height: 1.13; letter-spacing: -.045em; font-weight: 650; }
  h1 { font-size: clamp(3.5rem, 5.75vw, 5.35rem); letter-spacing: -.065em; line-height: 1.01; }
  h2 { font-size: clamp(2.25rem, 3.45vw, 3.35rem); }
  h3 { font-size: 1.42rem; letter-spacing: -.03em; }
  p { color: var(--muted); }
  svg { flex-shrink: 0; }
}
@layer layout {
  .container { width: min(1280px, calc(100% - 112px)); margin-inline: auto; }
  .section { padding-block: 112px; }
  .section-heading { margin-bottom: 52px; }
  .section-heading > p:last-child { max-width: 460px; margin-top: 24px; font-size: 1.125rem; }
  .heading-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 55px; }
  .heading-row > p:last-child { flex: 0 1 360px; margin-bottom: 4px; }
  .hero { display: grid; grid-template-columns: .87fr 1.13fr; align-items: center; gap: 56px; padding-block: 94px 86px; }
  .benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 42px; }
  .screen-explorer { display: grid; grid-template-columns: .72fr 1.28fr; gap: 54px; align-items: center; }
  .integration { display: grid; grid-template-columns: .88fr 1.12fr; align-items: center; gap: 90px; }
  .hardware { display: grid; grid-template-columns: 1.1fr .9fr; gap: 100px; border-top: 1px solid var(--line); }
  .progress-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .faq { display: grid; grid-template-columns: .65fr 1.35fr; gap: 80px; }
}
@layer components {
  .announcement { min-height: 44px; display: flex; justify-content: center; align-items: center; gap: 12px; padding: 9px 20px; color: var(--muted); background: var(--soft); border-bottom: 1px solid var(--line); font-size: .875rem; line-height: 1.4; }
  .announcement a { margin-left: 12px; color: var(--accent); font-weight: 600; }
  .announcement a:hover { text-decoration: underline; }
  .preview-label { font-size: .75rem; letter-spacing: .03em; color: var(--accent); border: 1px solid var(--line); border-radius: 4px; padding: 3px 8px; white-space: nowrap; }
  .site-header { position: sticky; top: 0; z-index: 20; background: var(--bg); border-bottom: 1px solid var(--line); }
  .header-inner { display: flex; align-items: center; gap: 36px; min-height: 88px; }
  .wordmark { display: inline-flex; align-items: center; gap: 10px; font-size: 1.5rem; letter-spacing: -.055em; font-weight: 750; white-space: nowrap; }
  .wordmark img { object-fit: contain; }
  #main-nav { display: flex; gap: 26px; margin-left: auto; align-items: center; }
  #main-nav a { font-size: .875rem; color: var(--muted); white-space: nowrap; }
  #main-nav a:hover, #main-nav a[aria-current='page'], .site-footer a:hover { color: var(--accent); }
  .nav-explore { position: relative; color: var(--muted); font-size: .875rem; }
  .nav-explore summary { cursor: pointer; list-style: none; white-space: nowrap; padding-block: 10px; }
  .nav-explore summary::-webkit-details-marker { display: none; }
  .nav-explore summary::after { content: '⌄'; margin-left: 7px; color: var(--accent); }
  .nav-explore[open] > summary, .nav-explore summary:hover { color: var(--accent); }
  .nav-explore-links { position: absolute; top: 100%; left: -18px; min-width: 205px; padding: 10px; display: grid; gap: 2px; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 12px 24px var(--shadow); }
  #main-nav .nav-explore-links a { padding: 11px 12px; border-radius: 4px; }
  .nav-explore-links a:hover { background: var(--accent-bg); }
  .header-actions { display: flex; align-items: center; gap: 20px; }
  .theme-toggle { background: transparent; border: 0; display: grid; place-content: center; width: 44px; height: 44px; border-radius: 50%; color: var(--muted); }
  .theme-toggle:hover { background: var(--surface-raised); color: var(--ink); }
  .github-link { font-size: .875rem; display: flex; gap: 8px; align-items: center; }
  .github-link:hover { color: var(--accent); }
  .menu-toggle { display: none; }
  .eyebrow { color: var(--accent); text-transform: uppercase; font-size: .75rem; letter-spacing: .145em; font-weight: 650; display: flex; align-items: center; gap: 10px; margin-bottom: 22px; }
  .small-rule { width: 25px; height: 2px; background: var(--accent); }
  .hero h1 span, .integration h2 span { color: var(--accent); }
  .hero-intro { font-size: 1.12rem; max-width: 470px; margin-block: 27px 31px; line-height: 1.8; }
  .actions { display: flex; flex-wrap: wrap; gap: 12px; }
  .button { display: inline-flex; align-items: center; justify-content: center; gap: 26px; padding: 13px 21px; min-height: 50px; border-radius: 7px; font-size: .9375rem; font-weight: 600; border: 1px solid transparent; }
  .button.primary { background: var(--accent); color: var(--button-ink); }
  .button.primary:hover { background: var(--accent-strong); }
  .button.secondary { border-color: var(--line); background: transparent; color: var(--ink); }
  .button.secondary:hover { border-color: var(--muted); background: var(--surface); }
  .hero-footnote { margin-top: 24px; font-size: .8125rem; }
  .hero-footnote span { margin-inline: 10px; color: var(--line); }
  .hero-visual { min-width: 0; }
  .visual-label { display: flex; justify-content: space-between; gap: 15px; color: var(--muted); font-size: .75rem; letter-spacing: .065em; margin-bottom: 18px; }
  .panel-frame { padding: 9px; border: 1px solid #34464a; border-radius: 19px; background: #070e11; box-shadow: 0 28px 60px var(--shadow); }
  .panel-frame img { width: 100%; border-radius: 11px; }
  .hero-visual figcaption { display: flex; justify-content: space-between; gap: 20px; font-size: .75rem; color: var(--muted); margin-top: 20px; }
  .hero-visual figcaption > span:first-child { color: var(--ink); }
  .principles { display: flex; justify-content: space-between; gap: 30px; padding-block: 28px; border-block: 1px solid var(--line); font-size: .9375rem; }
  .principles span { display: flex; gap: 12px; align-items: center; }
  .principles svg { width: 22px; height: 22px; fill: none; stroke: var(--accent); stroke-width: 1.4; stroke-linejoin: round; }
  .feature-number { display: block; font-size: .75rem; letter-spacing: .08em; color: var(--muted); margin-bottom: 22px; }
  .benefit-grid article { border-top: 1px solid var(--line); padding-top: 24px; }
  .benefit-grid h3 { margin-bottom: 16px; }
  .benefit-grid p { font-size: 1rem; }
  .detail, .benefit-grid .detail { font-size: .875rem; line-height: 1.65; margin-top: 18px; }
  .text-link { display: inline-flex; gap: 15px; align-items: baseline; font-size: .9375rem; color: var(--accent); font-weight: 600; }
  .text-link:hover { text-decoration: underline; }
  .benefit-grid .text-link { margin-top: 22px; }
  .experience, .progress { background: var(--soft); border-block: 1px solid var(--line); }
  .screen-option { width: 100%; text-align: left; display: flex; gap: 16px; align-items: baseline; background: transparent; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; padding: 23px 18px; }
  .screen-option.active { background: var(--accent-bg); border-radius: 7px; border-color: transparent; }
  .screen-option:hover:not(.active) { background: var(--surface); }
  .option-index { color: var(--muted); font-size: .75rem; }
  .screen-option strong { display: block; font-size: 1.03rem; font-weight: 600; margin-bottom: 5px; }
  .screen-option span span { display: block; font-size: .875rem; color: var(--muted); }
  .screen-option.active strong, .screen-option.active .option-index { color: var(--accent); }
  .option-arrow { margin-left: auto; color: var(--accent); }
  .screen-display { min-width: 0; }
  .enlarge-screen { padding: 0; width: 100%; display: block; background: #070e11; border: 1px solid #34464a; border-radius: 10px; overflow: hidden; position: relative; }
  .enlarge-screen img { width: 100%; }
  .enlarge-label { position: absolute; right: 10px; bottom: 10px; padding: 5px 10px; background: #172023f2; color: #f3f7f6; border: 1px solid #44545a; border-radius: 4px; font-size: .75rem; }
  .enlarge-screen:hover .enlarge-label { background: #063c43; }
  .screen-display figcaption { color: var(--muted); margin-top: 15px; font-size: .875rem; }
  .image-note { font-size: .8125rem; margin-top: 30px; text-align: right; }
  .image-note a { text-decoration: underline; }
  .integration-copy > p:not(.eyebrow) { margin-top: 25px; font-size: 1.06rem; }
  .check-list { padding: 0; margin: 25px 0; list-style: none; }
  .check-list li { position: relative; padding-left: 25px; margin-block: 11px; font-size: .9375rem; }
  .check-list li::before { content: '✓'; color: var(--accent); position: absolute; left: 0; }
  .inline-status { border-top: 1px solid var(--line); padding-top: 20px; margin-bottom: 25px; }
  .inline-status p { font-size: .875rem; margin-top: 12px; }
  .tag { display: inline-flex; align-items: center; font-size: .75rem; line-height: 1.4; color: var(--accent); background: var(--accent-bg); border-radius: 4px; padding: 6px 9px; font-weight: 600; }
  .tag.amber { color: var(--amber); background: transparent; border: 1px solid var(--line); }
  .tag.neutral { color: var(--muted); background: transparent; border: 1px solid var(--line); }
  .ha-visual { min-width: 0; padding: 30px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; }
  .ha-visual > img { border-radius: 5px; border: 1px solid var(--line); width: 100%; }
  .ha-visual figcaption { font-size: .75rem; color: var(--muted); margin-top: 14px; }
  .integration-foot { display: flex; align-items: center; justify-content: center; gap: 30px; margin-top: 36px; font-weight: 600; letter-spacing: -.03em; }
  .integration-foot > span:nth-child(2) { font-weight: 300; font-size: 1.5rem; color: var(--accent); }
  .hardware h2 { font-size: clamp(2rem, 2.6vw, 2.75rem); }
  .hardware-intro > p:not(.eyebrow) { margin-block: 23px; }
  .hardware-details { border-left: 1px solid var(--line); padding-left: 40px; }
  .board-label { display: grid; gap: 7px; }
  .board-label > span:first-child { color: var(--accent); font-size: .75rem; text-transform: uppercase; letter-spacing: .09em; }
  .board-label strong { font-size: 1.5rem; font-weight: 600; letter-spacing: -.035em; }
  .board-label > span:last-child { font-size: .875rem; color: var(--muted); }
  .capacity { display: grid; grid-template-columns: repeat(3, 1fr); margin-block: 30px 10px; }
  .capacity strong { font-size: 2.75rem; display: block; line-height: 1.2; font-weight: 500; letter-spacing: -.055em; }
  .capacity span { color: var(--muted); font-size: .875rem; }
  .progress-grid article { border: 1px solid var(--line); border-radius: 10px; padding: 28px; background: var(--bg); }
  .progress-grid h3 { margin-top: 22px; }
  .progress-grid ul { margin: 22px 0 0; padding-left: 18px; color: var(--muted); font-size: .9375rem; }
  .progress-grid li { padding-left: 4px; margin-block: 13px; }
  .progress-grid li::marker { color: var(--accent); font-size: .7em; }
  .progress-footer { display: flex; justify-content: space-between; gap: 30px; align-items: center; margin-top: 30px; }
  .progress-footer p { font-size: .8125rem; }
  .faq > div:first-child > p:last-child { margin-top: 22px; }
  .faq-list { border-top: 1px solid var(--line); }
  .faq details { border-bottom: 1px solid var(--line); }
  .faq summary { display: flex; gap: 25px; justify-content: space-between; padding-block: 24px; font-size: 1rem; font-weight: 550; cursor: pointer; list-style: none; }
  .faq summary::-webkit-details-marker { display: none; }
  .faq summary > span { color: var(--accent); font-size: 1.25rem; line-height: 1.3; }
  .faq details[open] summary > span { transform: rotate(45deg); }
  .faq details p { padding-bottom: 25px; padding-right: 24px; font-size: .9375rem; }
  .closing { background: var(--accent-bg); border: 1px solid var(--line); border-radius: 14px; padding: 50px; display: flex; align-items: center; justify-content: space-between; gap: 38px; margin-bottom: 85px; }
  .closing h2 { font-size: clamp(2rem, 3vw, 2.75rem); }
  .closing .eyebrow { margin-bottom: 14px; }
  .closing p:last-child { margin-top: 18px; }
  .closing .actions { flex-direction: column; flex-shrink: 0; }
  .closing .button.secondary { border-color: var(--muted); }
  .site-footer { border-top: 1px solid var(--line); padding-block: 32px 24px; }
  .footer-top { display: flex; align-items: center; gap: 30px; }
  .footer-top .wordmark { font-size: 1.3rem; }
  .footer-top p { font-size: .875rem; }
  .footer-top nav { margin-left: auto; display: flex; gap: 25px; font-size: .875rem; }
  .footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 28px; font-size: .75rem; }
  .skip-link { position: fixed; top: 10px; left: 10px; transform: translateY(-200%); z-index: 100; padding: 12px 18px; border-radius: 6px; background: var(--accent); color: var(--button-ink); }
  .skip-link:focus { transform: none; }
  .image-dialog { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 20px; color: var(--ink); width: min(1100px, calc(100% - 32px)); max-height: calc(100dvh - 32px); }
  .image-dialog::backdrop { background: #03090dd9; }
  .image-dialog img { margin-top: 18px; width: 100%; }
  .image-dialog p { margin-top: 12px; font-size: .875rem; }
  .dialog-close { display: flex; margin-left: auto; }
  .design-notice { padding: 14px 24px; background: var(--accent-bg); color: var(--ink); font-size: .875rem; text-align: center; }
  .design-notice a { text-decoration: underline; margin-left: 14px; }
  .faq details p a { color: var(--accent); text-decoration: underline; }
  .hardware-hero { padding-block: 80px 0; }
  .hardware-hero h1 { font-size: clamp(2.75rem, 4.5vw, 4.5rem); line-height: 1.12; }
  .hardware-hero h1 span { color: var(--accent); }
  .hardware-lead { font-size: 1.125rem; max-width: 730px; margin-top: 26px; }
  .hardware-notice { margin-top: 36px; padding: 23px 26px; border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 7px; background: var(--soft); display: flex; align-items: baseline; gap: 24px; }
  .hardware-notice .tag { flex-shrink: 0; }
  .hardware-notice p { font-size: .9375rem; }
  .hardware-jump { display: flex; flex-wrap: wrap; gap: 16px 36px; padding-block: 30px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .875rem; }
  .hardware-jump a:hover { color: var(--accent); }
  .hardware-jump span { margin-left: 12px; color: var(--accent); }
  .hardware-product { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; padding-block: 80px 100px; align-items: center; }
  .hardware-product h2 { margin-block: 22px; font-size: clamp(2.2rem, 3.4vw, 3.1rem); }
  .hardware-product .actions { margin-top: 30px; align-items: center; gap: 20px; }
  .hardware-specs { margin-block: 28px 0; font-size: .9375rem; }
  .hardware-specs > div { display: grid; grid-template-columns: .9fr 1.1fr; gap: 16px; border-bottom: 1px solid var(--line); padding-block: 12px; }
  .hardware-specs dt { color: var(--muted); }
  .hardware-specs dd { margin: 0; }
  .hardware-preview { padding: 28px; background: var(--soft); border: 1px solid var(--line); border-radius: 14px; min-width: 0; }
  .hardware-preview figcaption { color: var(--muted); font-size: .75rem; margin-top: 20px; }
  .hardware-preview-note { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--line); }
  .hardware-preview-note strong { font-size: 1.25rem; letter-spacing: -.03em; font-weight: 600; }
  .hardware-preview-note p { margin-top: 10px; font-size: .9375rem; }
  .hardware-accessories { background: var(--soft); border-block: 1px solid var(--line); }
  .hardware-card-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
  .hardware-card { display: flex; align-items: flex-start; flex-direction: column; padding: 36px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); }
  .hardware-card h3 { margin-block: 24px 20px; font-size: 1.75rem; }
  .hardware-card .hardware-specs { width: 100%; }
  .hardware-card .detail { margin-bottom: 28px; }
  .hardware-card .button { margin-top: auto; }
  .project-tools { border-bottom: 1px solid var(--line); }
  .product-screenshot { margin-top: 44px; min-width: 0; }
  .flasher-page .product-screenshot { max-width: 1188px; margin-inline: auto; }
  .product-hero { padding-bottom: 72px; }
  .product-screenshot + .hardware-card-grid { margin-top: 40px; }
  .product-screenshot > a { display: block; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: #07141c; }
  .product-screenshot img { width: 100%; }
  .product-screenshot figcaption { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 6px 24px; margin-top: 15px; color: var(--muted); font-size: .8125rem; }
  .product-screenshot figcaption a { color: var(--accent); }
  .product-screenshot figcaption a:hover { text-decoration: underline; }
  .footer-top nav { flex-wrap: wrap; }
  .workbench-card { border-top: 2px solid var(--amber); }
  .hardware-source-note { margin-top: 25px; font-size: .8125rem; }
  .hardware-next { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
  .hardware-next .actions { margin-top: 27px; align-items: center; gap: 22px; }
  .architecture { margin-top: 64px; padding: 32px; border: 1px solid var(--line); border-radius: 12px; background: var(--soft); }
  .architecture-heading { display: grid; grid-template-columns: .7fr 1.3fr; align-items: start; gap: 32px; margin-bottom: 28px; }
  .architecture-heading p { max-width: 610px; font-size: .9375rem; }
  .system-flow { display: grid; grid-template-columns: 1fr auto 1.1fr auto 1fr; gap: 18px; align-items: center; }
  .system-node { min-width: 0; align-self: stretch; border: 1px solid var(--line); background: var(--bg); border-radius: 8px; padding: 24px; }
  .system-node-main { background: var(--accent-bg); border-color: var(--accent-strong); }
  .system-node .feature-number { font-size: .6875rem; margin-bottom: 12px; }
  .system-node strong { display: block; font-size: 1.1rem; line-height: 1.4; font-weight: 600; }
  .system-node p { font-size: .875rem; margin-top: 10px; }
  .flow-arrow { color: var(--accent); font-size: 1.5rem; }
  .architecture .detail a { color: var(--accent); text-decoration: underline; }
  .story { background: var(--soft); border-block: 1px solid var(--line); }
  .story-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 90px; }
  .story .text-link { margin-top: 30px; }
  .story-copy { min-width: 0; }
  .story-byline { display: block; color: var(--accent); font-size: .8125rem; margin-bottom: 22px; }
  .story-copy p { font-size: 1.0625rem; }
  .story-copy p + p { margin-top: 22px; }
  .testing-stats { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 32px; padding-block: 28px; margin-bottom: 38px; border-block: 1px solid var(--line); }
  .testing-stats > div { display: grid; gap: 8px; align-content: start; }
  .testing-stats strong { font-size: clamp(1.75rem, 3.4vw, 2.8rem); font-weight: 550; letter-spacing: -.04em; line-height: 1.2; color: var(--accent); }
  .testing-stats span { color: var(--muted); font-size: .875rem; max-width: 240px; }
  .testing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px 54px; }
  .testing-grid .feature-number { margin-bottom: 15px; }
  .testing-grid h3 { margin-bottom: 15px; }
  .testing-grid p { font-size: .9375rem; }
  .testing-note { border-top: 1px solid var(--line); padding-top: 22px; margin-top: 36px; font-size: .8125rem; }
  .release-plan { display: grid; grid-template-columns: 1.25fr 1fr; gap: 50px; padding: 32px; margin-bottom: 32px; background: var(--accent-bg); border: 1px solid var(--line); border-radius: 10px; }
  .release-plan h3 { margin-block: 20px 16px; font-size: 1.8rem; }
  .release-plan p { font-size: .9375rem; }
  .release-now { border-left: 1px solid var(--line); padding-left: 32px; display: flex; flex-direction: column; gap: 14px; align-items: flex-start; }
  .release-now strong { font-size: 1rem; font-weight: 600; }
  .release-now p { font-size: .875rem; }
  .faq-intro { align-self: start; position: sticky; top: 116px; }
  .faq-intro > p:not(.eyebrow) { margin-top: 24px; }
  .faq-jump { display: grid; gap: 14px; margin-top: 30px; font-size: .875rem; color: var(--accent); }
  .faq-jump a:hover { text-decoration: underline; }
  .faq-jump span { margin-left: 12px; }
  .faq-groups { min-width: 0; }
  .faq-group + .faq-group { margin-top: 44px; }
  .faq-group h3 { margin-bottom: 22px; }
  .faq summary > span { flex-shrink: 0; align-self: flex-start; width: 1.25rem; text-align: center; }
  .build-steps { display: grid; grid-template-columns: 1fr 1fr; gap: 32px 48px; list-style: none; padding: 0; margin: 0; counter-reset: build; }
  .build-steps li { border-top: 1px solid var(--line); padding-top: 22px; counter-increment: build; }
  .build-steps li:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .build-steps li::before { content: '0' counter(build); display: block; color: var(--accent); font-size: .8125rem; margin-bottom: 16px; }
  .build-steps h3 { margin-bottom: 16px; }
  .build-steps p { font-size: .9375rem; }
  .table-scroll { width: 100%; overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
  .compatibility-table { width: 100%; border-collapse: collapse; font-size: .875rem; text-align: left; }
  .compatibility-table caption { padding: 18px 22px; color: var(--muted); font-size: .8125rem; text-align: left; }
  .compatibility-table th, .compatibility-table td { vertical-align: top; padding: 22px; border-bottom: 1px solid var(--line); }
  .compatibility-table thead { background: var(--accent-bg); }
  .compatibility-table th { font-weight: 600; }
  .compatibility-table tbody th { width: 22%; }
  .compatibility-table td { color: var(--muted); }
  .compatibility-table td a { color: var(--accent); text-decoration: underline; }
  .compatibility-table tbody tr:nth-child(even) { background: var(--soft); }
  .compatibility-table tr:last-child th, .compatibility-table tr:last-child td { border-bottom: 0; }
}
@layer alternate {
  /* A second art direction, sharing the same verified copy and interactions. */
  [data-design='blueprint'] { --font: 'Segoe UI', system-ui, sans-serif; }
  [data-design='blueprint'] .hero { grid-template-columns: 1fr; padding-block: 75px 60px; gap: 48px; }
  [data-design='blueprint'] .hero-copy { display: grid; grid-template-columns: 1.1fr .9fr; column-gap: 70px; align-items: start; }
  [data-design='blueprint'] .hero-copy .eyebrow { grid-column: 1 / -1; }
  [data-design='blueprint'] .hero h1 { grid-row: 2 / 5; font-size: clamp(3.5rem, 6vw, 5.4rem); }
  [data-design='blueprint'] .hero-intro { margin-top: 0; font-size: 1.15rem; }
  [data-design='blueprint'] .hero-visual { padding: 30px; border: 1px solid var(--line); border-radius: 0; background: var(--surface); }
  [data-design='blueprint'] .panel-frame { max-width: 900px; margin-inline: auto; border-radius: 8px; box-shadow: none; }
  [data-design='blueprint'] .panel-frame img { border-radius: 3px; }
  [data-design='blueprint'] .eyebrow, [data-design='blueprint'] .feature-number, [data-design='blueprint'] .visual-label { font-family: ui-monospace, 'Cascadia Code', Consolas, monospace; }
  [data-design='blueprint'] .principles { border-top: 0; }
  [data-design='blueprint'] .button, [data-design='blueprint'] .progress-grid article, [data-design='blueprint'] .closing, [data-design='blueprint'] .ha-visual { border-radius: 2px; }
  [data-design='blueprint'] .benefit-grid { gap: 0; border: 1px solid var(--line); }
  [data-design='blueprint'] .benefit-grid article { border-top: 0; padding: 30px; }
  [data-design='blueprint'] .benefit-grid article + article { border-left: 1px solid var(--line); }
}
@layer responsive {
  @media (max-width: 1100px) {
    .header-inner { gap: 24px; }
    #main-nav { gap: 20px; }
    .hardware-product { gap: 36px; }
    .hardware-card { padding: 26px; }
  }
  @media (max-width: 800px) {
    .hardware-product, .hardware-next { grid-template-columns: 1fr; gap: 40px; }
    .hardware-preview { max-width: 620px; }
    .hardware-card-grid { grid-template-columns: 1fr; }
    .hardware-notice { display: block; }
    .hardware-notice p { margin-top: 14px; }
    .hardware-hero { padding-top: 48px; }
    .hardware-product { padding-block: 48px 64px; }
    .hardware-card .hardware-specs { margin-top: 20px; }
  }
  @media (max-width: 600px) {
    .hardware-hero h1 { font-size: clamp(2.3rem, 8.5vw, 3rem); }
    .hardware-lead { font-size: 1rem; }
    .hardware-notice { padding: 20px; }
    .hardware-jump { gap: 12px 22px; }
    .hardware-preview, .hardware-card { padding: 22px; }
    .hardware-preview .visual-label { font-size: .65rem; }
    .hardware-specs > div { grid-template-columns: 1fr; gap: 3px; }
    .hardware-card .button { width: 100%; gap: 12px; }
  }
  @media (min-width: 1500px) { .hero { padding-block: 115px 105px; } }
  @media (max-width: 1200px) {
    .container { width: calc(100% - 72px); } .header-inner { gap: 20px; } #main-nav { gap: 20px; } .header-actions { gap: 8px; } .github-link span { display: none; }
    .hero { gap: 36px; } .hero-visual figcaption { flex-direction: column; gap: 4px; } .integration { gap: 55px; } .hardware { gap: 55px; } .screen-explorer { gap: 30px; } .ha-visual { padding: 24px; }
    .benefit-grid { gap: 28px; } .progress-grid { gap: 16px; } .progress-grid article { padding: 24px; } .visual-label { font-size: .75rem; letter-spacing: .04em; }
  }
  @media (max-width: 1000px) {
    .nav-explore-links { position: static; margin-top: 2px; box-shadow: none; }
    .architecture { padding: 26px; }
    .system-flow { gap: 10px; }
    .system-node { padding: 18px; }
    .story-grid { gap: 45px; }
    .release-plan { gap: 30px; }
    .compatibility-table th, .compatibility-table td { padding: 18px 14px; }
    .container { width: calc(100% - 48px); } .header-inner { flex-wrap: wrap; min-height: 78px; gap: 16px; } .header-actions { margin-left: auto; } .menu-toggle:not([hidden]) { display: flex; gap: 9px; align-items: center; background: transparent; border: 1px solid var(--line); border-radius: 5px; padding: 9px 12px; min-height: 44px; font-size: .875rem; margin-left: auto; } .header-actions { margin-left: 0; }
    #main-nav { order: 4; width: 100%; padding-bottom: 20px; flex-wrap: wrap; justify-content: space-between; } .js #main-nav { display: none; } .js #main-nav.open { display: flex; }
    .hero { padding-block: 65px; gap: 30px; } h1 { font-size: clamp(3.25rem, 6vw, 4.5rem); } .hero-intro { font-size: 1rem; } .hero .actions { gap: 9px; } .hero .button { padding: 11px 14px; gap: 12px; }
    .section { padding-block: 80px; } .principles { font-size: .875rem; } .principles span { gap: 8px; } .heading-row { gap: 35px; } .heading-row > p:last-child { flex-basis: 290px; font-size: 1rem; }
    .screen-explorer { grid-template-columns: 1fr; gap: 32px; } .screen-options { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; } .screen-options > :last-child:nth-child(odd) { grid-column: 1 / -1; } .screen-display { max-width: 850px; width: 100%; margin-inline: auto; }
    .integration { gap: 35px; } .ha-visual { padding: 18px; } .ha-visual .visual-label { flex-direction: column; gap: 3px; } .integration-foot { gap: 14px; font-size: .875rem; }
    .hardware { gap: 35px; } .hardware-details { padding-left: 30px; } .progress-grid { grid-template-columns: 1fr; } .progress-grid article { padding: 30px; } .progress-grid ul { columns: 2; column-gap: 45px; } .progress-grid li { break-inside: avoid; }
    .faq { gap: 40px; } .closing { padding: 36px; } .footer-top { flex-wrap: wrap; gap: 20px; } .footer-top nav { width: 100%; margin: 0; }
    [data-design='blueprint'] .hero-copy { column-gap: 30px; }
  }
  @media (max-width: 700px) {
    .nav-explore summary { padding: 12px 4px; }
    .nav-explore-links { margin-bottom: 10px; }
    .product-screenshot { margin-top: 30px; }
    .architecture { padding: 24px; margin-top: 40px; }
    .architecture-heading, .system-flow, .story-grid, .testing-grid, .release-plan, .build-steps { grid-template-columns: 1fr; }
    .architecture-heading { gap: 16px; }
    .system-flow { gap: 8px; }
    .flow-arrow { justify-self: center; transform: rotate(90deg); }
    .system-node { padding: 20px; }
    .story-grid { gap: 32px; }
    .story-copy p { font-size: 1rem; }
    .testing-stats { grid-template-columns: 1fr; gap: 25px; }
    .testing-stats > div { grid-template-columns: 1fr 1.15fr; gap: 16px; align-items: center; }
    .testing-stats strong { font-size: 1.8rem; }
    .testing-grid { gap: 30px; }
    .release-plan { padding: 24px; gap: 26px; }
    .release-now { padding: 24px 0 0; border-left: 0; border-top: 1px solid var(--line); }
    .faq-intro { position: static; }
    .faq-intro > p:not(.eyebrow) { display: block; }
    .faq-jump { margin-top: 24px; }
    .compatibility-table, .compatibility-table tbody, .compatibility-table tr, .compatibility-table th, .compatibility-table td { display: block; width: 100%; }
    .compatibility-table caption { display: block; width: 100%; padding: 20px; }
    .compatibility-table thead { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
    .compatibility-table tbody th { width: 100%; padding: 22px 20px 8px; border-bottom: 0; font-size: 1rem; }
    .compatibility-table td { padding: 10px 20px; border-bottom: 0; }
    .compatibility-table td::before { content: attr(data-label); display: block; color: var(--ink); font-size: .75rem; font-weight: 600; margin-bottom: 4px; }
    .compatibility-table td:last-child { padding-bottom: 22px; }
    .compatibility-table tr + tr { border-top: 1px solid var(--line); }
    .container { width: calc(100% - 40px); } .announcement { flex-wrap: wrap; column-gap: 8px; row-gap: 6px; padding-block: 10px; } .announcement > span:nth-child(2) { font-size: .75rem; } .announcement a { display: none; }
    .wordmark { font-size: 1.3rem; gap: 6px; } .wordmark img { width: 34px; height: 34px; } .header-inner { min-height: 73px; gap: 8px; } .github-link { display: none; } .menu-toggle:not([hidden]) { font-size: .8125rem; padding-inline: 10px; } .theme-toggle { width: 38px; }
    #main-nav { flex-direction: column; align-items: stretch; gap: 0; } #main-nav a { padding: 12px 4px; }
    .hero { grid-template-columns: 1fr; padding-block: 52px 38px; gap: 46px; } h1 { font-size: clamp(3.8rem, 13vw, 5.2rem); } .eyebrow { margin-bottom: 22px; } .hero-intro { font-size: 1.075rem; max-width: 470px; } .hero-footnote { margin-top: 21px; } .hero-visual figcaption { flex-direction: row; gap: 16px; font-size: .75rem; } .hero-visual figcaption > span { max-width: 50%; } .visual-label { font-size: .75rem; }
    .panel-frame { border-radius: 12px; padding: 6px; } .panel-frame img { border-radius: 6px; }
    .principles { flex-direction: column; gap: 17px; padding-block: 24px; font-size: .9375rem; } .principles span { gap: 14px; }
    .section { padding-block: 66px; } h2 { font-size: 2.25rem; } .section-heading { margin-bottom: 34px; } .section-heading > p:last-child { font-size: 1rem; margin-top: 20px; }
    .benefit-grid { grid-template-columns: 1fr; gap: 32px; } .benefit-grid article { padding-top: 22px; } .feature-number { margin-bottom: 16px; } .benefit-grid p { max-width: 520px; }
    .heading-row { display: block; } .heading-row > p:last-child { margin-top: 22px; }
    .screen-options { grid-template-columns: 1fr; gap: 0; } .screen-option { padding: 17px 13px; } .screen-explorer { gap: 26px; } .image-note { text-align: left; font-size: .8125rem; } .enlarge-label { font-size: .75rem; right: 5px; bottom: 5px; padding: 3px 7px; }
    .integration, .hardware { grid-template-columns: 1fr; gap: 40px; } .integration-copy { min-width: 0; } .ha-visual { padding: 20px; } .ha-visual .visual-label { flex-direction: row; } .hardware-details { border-left: 0; border-top: 1px solid var(--line); padding: 28px 0 0; } .hardware h2 { font-size: 2.15rem; }
    .progress-grid article { padding: 25px; } .progress-grid ul { columns: 1; } .progress-footer { align-items: flex-start; flex-direction: column; gap: 14px; }
    .faq { grid-template-columns: 1fr; gap: 30px; } .faq h2 br { display: none; } .faq > div:first-child > p:last-child { display: none; } .faq summary { padding-block: 21px; }
    .closing { padding: 30px 24px; flex-direction: column; align-items: stretch; margin-bottom: 60px; gap: 28px; } .closing .actions { align-items: stretch; } .closing .eyebrow { font-size: .75rem; }
    .footer-top { gap: 16px; } .footer-top > p { margin-left: auto; font-size: .75rem; } .footer-top nav { flex-wrap: wrap; gap: 20px; } .footer-bottom { flex-direction: column; gap: 5px; }
    [data-design='blueprint'] .hero { padding-block: 50px 40px; gap: 32px; } [data-design='blueprint'] .hero-copy { display: block; } [data-design='blueprint'] .hero h1 { font-size: 3.5rem; } [data-design='blueprint'] .hero-intro { margin-top: 24px; } [data-design='blueprint'] .hero-visual { padding: 14px; } [data-design='blueprint'] .benefit-grid { gap: 0; } [data-design='blueprint'] .benefit-grid article + article { border-left: 0; border-top: 1px solid var(--line); }
  }
  @media (max-width: 360px) { .container { width: calc(100% - 30px); } .announcement > span:nth-child(2) { max-width: 175px; } .wordmark { font-size: 1.15rem; } h1 { font-size: 3.45rem; } .visual-label { letter-spacing: 0; font-size: .7rem; } .hero-visual figcaption { flex-direction: column; } .hero-visual figcaption > span { max-width: none; } .footer-top > p { margin-left: 0; } }
  @media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; } }
}