@charset "UTF-8";
:root {
  color-scheme: dark;
  --page: #090b0f;
  --page-deep: #06080b;
  --surface: #11151c;
  --surface-raised: #161c25;
  --ink: #f3f6fa;
  --muted: #9ba6b3;
  --subtle: #6d7886;
  --line: rgba(210, 223, 239, .14);
  --line-strong: rgba(210, 223, 239, .24);
  --accent: #69baff;
  --accent-strong: #a6d9ff;
  --accent-surface: rgba(51, 145, 231, .14);
  --warning: #eccb84;
  --warning-surface: rgba(236, 203, 132, .12);
  --shadow: 0 30px 90px rgba(0, 0, 0, .34);
  --shell: 1180px;
  font-family: "Segoe UI", "Microsoft YaHei UI", "Noto Sans CJK SC", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  background: var(--page);
  color: var(--ink);
}
:root[data-theme="light"] {
  color-scheme: light;
  --page: #f4f6f8;
  --page-deep: #e9edf1;
  --surface: #fff;
  --surface-raised: #f9fbfd;
  --ink: #101820;
  --muted: #566575;
  --subtle: #748394;
  --line: rgba(20, 39, 57, .13);
  --line-strong: rgba(20, 39, 57, .22);
  --accent: #087bd3;
  --accent-strong: #075fa4;
  --accent-surface: rgba(8, 123, 211, .1);
  --warning: #8e6718;
  --warning-surface: rgba(193, 145, 41, .12);
  --shadow: 0 26px 70px rgba(22, 43, 64, .13);
}
:root[data-theme="dark"] { color-scheme: dark; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { min-width: 320px; margin: 0; color: var(--ink); background: var(--page); line-height: 1.65; }
body, button, a { font-family: inherit; }
img { display: block; max-width: 100%; }
a { color: var(--accent-strong); text-underline-offset: 4px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; border-radius: 5px; }
::selection { color: #fff; background: #176cb5; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; z-index: 20; top: -80px; left: 18px; padding: 10px 14px; border-radius: 8px; color: var(--ink); background: var(--surface); }
.skip-link:focus { top: 12px; }
.section-shell { width: min(var(--shell), calc(100% - 56px)); margin-inline: auto; }
.site-header { position: sticky; z-index: 12; top: 0; display: flex; align-items: center; gap: clamp(15px, 2vw, 30px); min-height: 76px; padding: 11px max(28px, calc((100vw - var(--shell)) / 2)); border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--page) 88%, transparent); backdrop-filter: blur(18px); }
.brand { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand img { width: 36px; height: 36px; }
.brand span { display: block; font-size: 17px; font-weight: 740; letter-spacing: -.03em; line-height: 1.2; }
.brand small { display: block; margin-top: 4px; color: var(--subtle); font-size: 8px; font-weight: 600; letter-spacing: .13em; }
.primary-nav { display: flex; flex: 1 1 auto; align-items: center; justify-content: center; gap: clamp(8px, 1.15vw, 17px); }
.primary-nav a, .footer-nav a { color: var(--muted); font-size: 12px; text-decoration: none; white-space: nowrap; transition: color .18s ease; }
.primary-nav a:hover, .footer-nav a:hover { color: var(--accent-strong); }
.header-tools { display: flex; flex: 0 0 auto; align-items: center; gap: 10px; }
.theme-toggle, .menu-toggle { display: grid; place-items: center; width: 40px; height: 40px; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--ink); background: var(--surface); cursor: pointer; }
.theme-toggle { font-size: 19px; }
.header-cta { padding: 10px 14px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--ink); background: var(--surface); font-size: 12px; font-weight: 650; text-decoration: none; white-space: nowrap; transition: border-color .2s, background .2s; }
.header-cta:hover { border-color: var(--accent); background: var(--accent-surface); }
.menu-toggle { display: none; }
.menu-lines { position: relative; display: block; width: 17px; height: 13px; border-top: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; }
.menu-lines::after { position: absolute; top: 5px; left: 0; width: 17px; border-top: 1.5px solid currentColor; content: ""; }
.hero { position: relative; padding-top: clamp(55px, 8vw, 106px); }
.hero-copy { max-width: 900px; margin: 0 auto; text-align: center; }
.eyebrow { display: flex; align-items: center; gap: 9px; margin: 0 0 18px; color: var(--accent-strong); font-size: 10px; font-weight: 720; letter-spacing: .17em; text-transform: uppercase; }
.hero-copy .eyebrow { justify-content: center; }
.eyebrow-line { width: 20px; height: 1px; background: var(--accent); }
h1, h2, h3, h4, p { margin-top: 0; }
h1, h2, h3 { text-wrap: balance; }
h1 { margin-bottom: 20px; font-size: clamp(45px, 7.3vw, 94px); font-weight: 650; letter-spacing: -.065em; line-height: 1.08; }
h1 em, h2 em { color: var(--accent); font-style: normal; }
.hero-lead { max-width: 680px; margin: 0 auto; color: var(--muted); font-size: clamp(15px, 1.45vw, 18px); line-height: 1.85; }
.hero-status { display: flex; align-items: center; justify-content: center; gap: 12px; margin: 20px 0 0; color: var(--muted); font-size: 12px; }
.status-pill { display: inline-flex; align-items: center; width: fit-content; min-height: 26px; padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: var(--surface); font-size: 10px; font-weight: 700; letter-spacing: .02em; white-space: nowrap; }
.status-pill--ready { border-color: rgba(79, 193, 145, .32); color: #76d9ad; background: rgba(42, 145, 103, .12); }
.status-pill--pending { border-color: rgba(236, 203, 132, .32); color: var(--warning); background: var(--warning-surface); }
.status-pill--off { border-color: var(--line); color: var(--subtle); }
.hero-actions { display: flex; justify-content: center; gap: 11px; margin-top: 27px; }
.button { display: inline-flex; min-height: 47px; align-items: center; justify-content: center; gap: 10px; padding: 12px 20px; border: 1px solid transparent; border-radius: 999px; font-size: 13px; font-weight: 690; text-decoration: none; transition: transform .18s ease, background .18s ease, border-color .18s ease; }
.button:hover:not(:disabled) { transform: translateY(-2px); }
.button--primary { color: #05111c; background: linear-gradient(115deg, #93d4ff, #4ba7f4); box-shadow: 0 10px 34px rgba(54, 145, 224, .24); }
.button--primary:hover:not(:disabled) { background: linear-gradient(115deg, #b2e2ff, #68b9ff); }
.button--primary:disabled { color: var(--subtle); background: var(--surface-raised); border-color: var(--line); box-shadow: none; cursor: not-allowed; }
.button--quiet { border-color: var(--line-strong); color: var(--ink); background: var(--surface); }
.button--quiet:hover { border-color: var(--accent); }
.hero-note { margin: 19px 0 0; color: var(--subtle); font-size: 11px; }
.hero-visual { position: relative; margin: 57px 0 0; overflow: hidden; border: 1px solid var(--line-strong); border-radius: 20px; background: #080b10; box-shadow: var(--shadow); }
.hero-visual::after { position: absolute; inset: 0; border: 1px solid rgba(255, 255, 255, .06); border-radius: inherit; pointer-events: none; content: ""; }
.hero-visual img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.hero-visual figcaption { position: absolute; right: 14px; bottom: 14px; left: 14px; display: flex; align-items: center; justify-content: space-between; gap: 12px; color: #d9e0e8; font-size: 10px; text-shadow: 0 1px 8px #000; }
.concept-stamp { padding: 6px 10px; border: 1px solid rgba(255,255,255,.32); border-radius: 999px; background: rgba(6, 11, 17, .72); font-weight: 700; }
.hero-foot { display: flex; justify-content: space-between; gap: 16px; padding: 18px 0 30px; color: var(--subtle); font-size: 9px; letter-spacing: .09em; }
.intro-strip { border-block: 1px solid var(--line); background: var(--surface); }
.intro-strip__inner { display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 74px; }
.intro-strip p { margin: 0; color: var(--ink); font-size: 13px; font-weight: 650; }
.intro-strip span, .intro-strip a { color: var(--muted); font-size: 11px; }
.content-section { padding-block: clamp(78px, 10vw, 132px); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 32px; margin-bottom: 37px; }
.section-heading .eyebrow { margin-bottom: 13px; }
.section-heading h2, .about-copy h2 { margin: 0; font-size: clamp(34px, 5vw, 60px); font-weight: 620; letter-spacing: -.055em; line-height: 1.14; }
.section-heading > p { width: min(420px, 42%); margin: 0 0 5px; color: var(--muted); font-size: 14px; line-height: 1.8; }
.section-heading--wide { align-items: end; }
.feature-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-block: 1px solid var(--line); }
.feature-card { min-height: 184px; padding: 25px 21px; border-right: 1px solid var(--line); }
.feature-card:first-child { border-left: 1px solid var(--line); }
.feature-index { display: block; margin-bottom: 37px; color: var(--accent); font-size: 10px; letter-spacing: .15em; }
.feature-card h3 { margin: 0 0 8px; font-size: 16px; font-weight: 650; }
.feature-card p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.75; }
.showcase-section { padding-block: clamp(76px, 9vw, 118px); border-block: 1px solid var(--line); background: linear-gradient(180deg, var(--page-deep), var(--page)); }
.showcase-section .section-shell { max-width: 1260px; }
.screen-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.screen-card { min-width: 0; margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 15px; background: var(--surface); transition: transform .22s ease, border-color .22s ease; }
.screen-card:hover { transform: translateY(-4px); border-color: rgba(105, 186, 255, .48); }
.screen-card img { width: 100%; height: auto; aspect-ratio: 12 / 7; object-fit: cover; background: #080b10; }
.screen-card__caption { display: flex; justify-content: space-between; gap: 16px; min-height: 125px; padding: 20px; }
.screen-card__caption .eyebrow { margin-bottom: 7px; font-size: 8px; letter-spacing: .1em; }
.screen-card__caption h3 { margin: 0 0 7px; font-size: 19px; }
.screen-card__caption p:last-child { margin: 0; color: var(--muted); font-size: 11px; }
.caption-mark { color: var(--subtle); font-size: 18px; }
.legal-concept { margin: 21px 0 0; color: var(--subtle); font-size: 10px; line-height: 1.7; }
.vehicle-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.vehicle-card { padding: 27px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.vehicle-card__top, .release-entry__heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.vehicle-card .eyebrow { margin: 0; }
.vehicle-card h3 { margin: 29px 0 5px; font-size: 21px; }
.vehicle-card p { margin: 11px 0 0; color: var(--muted); font-size: 12px; line-height: 1.75; }
.vehicle-card .vehicle-profile { margin: 0; color: var(--accent-strong); font-size: 11px; }
.download-section { padding-block: clamp(76px, 9vw, 116px); border-block: 1px solid var(--line); background: var(--surface); }
.download-section .section-heading { align-items: center; }
.download-panel { padding: clamp(23px, 4vw, 44px); border: 1px solid var(--line-strong); border-radius: 18px; background: var(--page); box-shadow: var(--shadow); }
.download-panel__top { display: flex; justify-content: space-between; gap: 20px; }
.download-panel__top h3 { margin: 0 0 6px; font-size: clamp(23px, 3vw, 34px); letter-spacing: -.035em; }
.download-panel__top p:last-child { margin: 0; color: var(--muted); font-size: 12px; }
.separator-dot { padding-inline: 5px; color: var(--subtle); }
.download-mark { display: grid; width: 56px; height: 56px; flex: 0 0 auto; place-items: center; border: 1px solid var(--line-strong); border-radius: 17px; color: var(--accent); font-size: 24px; font-weight: 800; }
.download-mark span { color: var(--ink); font-size: 12px; }
.download-action { display: flex; align-items: center; gap: 18px; padding-block: 26px; border-bottom: 1px solid var(--line); }
.download-message { margin: 0; color: var(--muted); font-size: 11px; }
.release-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px 28px; padding-block: 27px; margin: 0; border-bottom: 1px solid var(--line); }
.release-facts dt { margin-bottom: 7px; color: var(--subtle); font-size: 10px; }
.release-facts dd { margin: 0; color: var(--ink); font-size: 13px; font-weight: 580; overflow-wrap: anywhere; }
.release-facts dd span { color: var(--muted); font-size: 10px; font-weight: 400; }
.release-facts code, .history-row code { color: var(--accent-strong); font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 11px; overflow-wrap: anywhere; }
.release-facts__wide { grid-column: 1 / -1; }
.hash-value { user-select: all; }
.release-notes { padding-top: 22px; }
.release-notes h4 { margin: 0 0 8px; font-size: 12px; }
.release-notes ul { display: grid; gap: 6px; padding-left: 20px; margin: 0; color: var(--muted); font-size: 11px; }
.download-bottom { display: flex; justify-content: space-between; gap: 16px; padding-top: 23px; color: var(--subtle); font-size: 10px; }
.history-block { margin-top: 50px; }
.history-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.history-heading .eyebrow { margin-bottom: 8px; }
.history-heading h3 { margin: 0; font-size: 21px; }
.history-heading > p { max-width: 350px; margin: 0; color: var(--muted); font-size: 10px; }
.history-list { border-top: 1px solid var(--line); }
.history-row { display: grid; grid-template-columns: minmax(125px, 1fr) minmax(190px, 2fr) minmax(100px, .85fr) auto; align-items: center; gap: 20px; padding: 18px 7px; border-bottom: 1px solid var(--line); }
.history-row > div { display: flex; flex-direction: column; gap: 3px; }
.history-row strong { font-size: 13px; }
.history-row span { color: var(--muted); font-size: 10px; }
.history-signer { color: var(--subtle) !important; }
.history-unavailable { color: var(--subtle); font-size: 10px; }
.history-note { grid-column: 1 / -1; margin: -10px 0 0; color: var(--warning); font-size: 10px; }
.release-timeline { border-top: 1px solid var(--line); }
.release-entry { display: grid; grid-template-columns: minmax(145px, .55fr) minmax(0, 2fr); gap: 32px; padding: 27px 0; border-bottom: 1px solid var(--line); }
.release-entry__side { display: flex; flex-direction: column; gap: 4px; }
.release-entry__version { color: var(--accent-strong); font-size: 14px; font-weight: 700; }
.release-entry__code { color: var(--subtle); font-size: 10px; }
.release-entry__heading h3 { margin: 0; font-size: 17px; }
.release-entry ul { display: grid; gap: 7px; padding-left: 18px; margin: 17px 0 0; color: var(--muted); font-size: 11px; }
.install-section { padding-block: clamp(74px, 9vw, 112px); border-block: 1px solid var(--line); background: var(--surface); }
.install-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 34px; padding: 0; margin: 40px 0 28px; list-style: none; }
.install-step { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 15px; padding: 21px 0; border-top: 1px solid var(--line); }
.install-step__number { color: var(--accent); font-size: 11px; letter-spacing: .1em; }
.install-step h3 { margin: 0 0 6px; font-size: 14px; }
.install-step p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.8; }
.install-warning { display: flex; align-items: start; gap: 12px; padding: 15px 18px; border: 1px solid rgba(236, 203, 132, .25); border-radius: 11px; color: var(--warning); background: var(--warning-surface); font-size: 11px; }
.install-warning span { font-size: 15px; font-weight: 800; }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { position: relative; padding: 20px 42px 20px 0; color: var(--ink); font-size: 14px; font-weight: 620; cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { position: absolute; top: 18px; right: 6px; color: var(--accent); font-size: 19px; content: "+"; }
.faq-item[open] summary::after { content: "−"; }
.faq-item p { max-width: 780px; padding: 0 28px 19px 0; margin: -3px 0 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.status-section { padding-block: clamp(74px, 9vw, 112px); border-block: 1px solid var(--line); background: linear-gradient(130deg, var(--page-deep), var(--page)); }
.status-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; }
.status-card { display: flex; align-items: start; gap: 11px; min-height: 103px; padding: 17px 14px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface); }
.status-card h3 { margin: 0 0 5px; font-size: 11px; line-height: 1.5; }
.status-card p { margin: 0; color: var(--muted); font-size: 10px; }
.status-dot { width: 7px; height: 7px; flex: 0 0 auto; margin-top: 5px; border-radius: 50%; background: var(--warning); box-shadow: 0 0 0 4px var(--warning-surface); }
.status-dot--ready { background: #64d6a6; box-shadow: 0 0 0 4px rgba(72, 178, 128, .13); }
.status-dot--off { background: var(--subtle); box-shadow: 0 0 0 4px var(--accent-surface); }
.status-footnote { display: grid; grid-template-columns: 180px 150px 1fr; align-items: center; gap: 18px; padding: 22px 0 0; margin-top: 26px; border-top: 1px solid var(--line); }
.status-footnote span { color: var(--subtle); font-size: 9px; letter-spacing: .1em; }
.status-footnote strong { color: var(--warning); font-size: 12px; letter-spacing: .06em; }
.status-footnote p { margin: 0; color: var(--muted); font-size: 11px; }
.about-section { display: grid; grid-template-columns: minmax(0, 1fr) 220px; align-items: center; gap: 80px; padding-block: clamp(78px, 10vw, 132px); }
.about-copy { max-width: 740px; }
.about-copy h2 { margin-bottom: 22px; }
.about-copy > p { max-width: 700px; margin-bottom: 13px; color: var(--muted); font-size: 12px; line-height: 1.9; }
.about-links { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 24px; }
.about-links a { font-size: 11px; }
.about-seal { display: flex; flex-direction: column; align-items: center; gap: 11px; padding: 27px 18px; border: 1px solid var(--line); border-radius: 15px; color: var(--muted); text-align: center; }
.seal-mark { display: grid; width: 53px; height: 53px; place-items: center; border: 1px solid var(--line-strong); border-radius: 17px; color: var(--accent); font-size: 28px; font-weight: 750; }
.about-seal > span:nth-child(2) { font-size: 9px; font-weight: 700; letter-spacing: .14em; line-height: 1.7; }
.about-seal small { color: var(--subtle); font-size: 8px; letter-spacing: .12em; }
.site-footer { padding: 25px 0 19px; border-top: 1px solid var(--line); background: var(--surface); }
.footer-inner { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 18px 26px; }
.footer-inner > p { grid-column: 1 / 3; margin: 0; color: var(--subtle); font-size: 10px; }
.footer-nav { display: flex; flex-wrap: wrap; justify-content: end; gap: 10px 16px; }
.footer-nav a { font-size: 10px; }
.back-top { color: var(--muted); font-size: 10px; text-decoration: none; }
.footer-legal { padding-top: 16px; margin-top: 17px; border-top: 1px solid var(--line); color: var(--subtle); font-size: 9px; }
.not-found-page { display: grid; min-height: 100svh; place-items: center; padding: 24px; }
.not-found { width: min(520px, 100%); padding: 36px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.not-found h1 { margin: 0 0 15px; font-size: clamp(32px, 8vw, 48px); }
.not-found > p:not(.eyebrow) { color: var(--muted); }
.js-motion .reveal:not(.is-visible) { opacity: 0; transform: translateY(12px); }
.js-motion .reveal.is-visible { opacity: 1; transform: translateY(0); transition: opacity .55s ease, transform .55s ease; }
@media (max-width: 1160px) {
  .site-header { justify-content: space-between; }
  .menu-toggle { display: grid; order: 3; }
  .header-tools { margin-left: auto; }
  .primary-nav { position: absolute; top: calc(100% + 1px); right: 0; left: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 8px max(28px, calc((100vw - var(--shell)) / 2)) 18px; border-bottom: 1px solid var(--line); background: var(--page); box-shadow: var(--shadow); }
  .primary-nav[data-open="true"] { display: flex; }
  .primary-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
}
@media (max-width: 900px) {
  .feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .feature-card:nth-child(4) { border-left: 1px solid var(--line); }
  .screen-grid { grid-template-columns: 1fr; gap: 14px; }
  .screen-card { display: grid; grid-template-columns: 1.5fr 1fr; align-items: stretch; }
  .screen-card img { height: 100%; object-fit: cover; }
  .screen-card__caption { align-items: end; }
  .status-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-inner { grid-template-columns: auto 1fr; }
  .footer-nav { grid-column: 1 / -1; grid-row: 2; justify-content: start; }
  .footer-inner > p { grid-column: 1 / 2; grid-row: 3; }
  .back-top { grid-column: 2; grid-row: 3; justify-self: end; }
}
@media (max-width: 620px) {
  html { scroll-padding-top: 82px; }
  .section-shell { width: min(100% - 36px, var(--shell)); }
  .site-header { min-height: 66px; gap: 10px; padding-inline: 18px; }
  .brand img { width: 32px; height: 32px; }
  .brand span { font-size: 15px; }
  .brand small { font-size: 7px; }
  .header-tools { gap: 6px; }
  .theme-toggle, .menu-toggle { width: 36px; height: 36px; }
  .header-cta { padding: 8px 10px; font-size: 10px; }
  .primary-nav { padding-inline: 18px; }
  .hero { padding-top: 54px; }
  h1 { font-size: clamp(43px, 12vw, 67px); }
  .hero-lead { font-size: 14px; }
  .hero-status { flex-direction: column; gap: 8px; }
  .hero-actions { flex-direction: column; align-items: stretch; width: min(100%, 330px); margin-inline: auto; }
  .hero-visual { margin-top: 35px; margin-inline: -2px; border-radius: 12px; }
  .hero-visual img { aspect-ratio: 1.18 / 1; object-fit: cover; }
  .hero-visual figcaption { right: 8px; bottom: 8px; left: 8px; align-items: end; font-size: 8px; }
  .hero-foot { flex-wrap: wrap; padding-block: 14px 22px; font-size: 8px; }
  .hero-foot span:nth-child(2) { order: 3; width: 100%; }
  .intro-strip__inner { flex-wrap: wrap; justify-content: start; gap: 4px 12px; padding-block: 16px; }
  .intro-strip p { width: 100%; }
  .intro-strip span, .intro-strip a { font-size: 10px; }
  .content-section, .showcase-section, .download-section, .install-section, .status-section { padding-block: 67px; }
  .section-heading { display: block; margin-bottom: 25px; }
  .section-heading h2, .about-copy h2 { font-size: clamp(34px, 10vw, 46px); }
  .section-heading > p { width: auto; margin-top: 16px; font-size: 12px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-card { min-height: 152px; padding: 18px 13px; }
  .feature-card:nth-child(odd) { border-left: 1px solid var(--line); }
  .feature-card:nth-child(even) { border-right: 1px solid var(--line); }
  .feature-index { margin-bottom: 22px; }
  .feature-card h3 { font-size: 14px; }
  .feature-card p { font-size: 10px; }
  .screen-card { display: block; }
  .screen-card img { height: auto; aspect-ratio: 12 / 7; }
  .screen-card__caption { min-height: 0; padding: 16px; }
  .screen-card__caption h3 { font-size: 16px; }
  .vehicle-grid, .install-list { grid-template-columns: 1fr; }
  .vehicle-card { padding: 20px; }
  .vehicle-card h3 { margin-top: 20px; }
  .download-panel { padding: 20px 16px; border-radius: 14px; }
  .download-action { align-items: start; flex-direction: column; gap: 11px; }
  .download-action .button { width: 100%; }
  .release-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 12px; }
  .release-facts__wide { grid-column: 1 / -1; }
  .history-heading { display: block; }
  .history-heading > p { margin-top: 10px; }
  .history-row { grid-template-columns: 1fr auto; gap: 8px 14px; }
  .history-row code { grid-column: 1 / -1; grid-row: 2; font-size: 9px; }
  .history-signer { grid-column: 1; grid-row: 3; }
  .history-unavailable { grid-column: 2; grid-row: 1; }
  .history-note { margin: 0; }
  .release-entry { grid-template-columns: 1fr; gap: 12px; }
  .release-entry__side { flex-direction: row; align-items: baseline; justify-content: space-between; }
  .release-entry__heading { align-items: start; }
  .release-entry__heading h3 { font-size: 15px; }
  .install-warning { font-size: 10px; }
  .status-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .status-card { min-height: 90px; padding: 13px 10px; }
  .status-footnote { grid-template-columns: 1fr auto; gap: 7px 12px; }
  .status-footnote p { grid-column: 1 / -1; }
  .about-section { grid-template-columns: 1fr; gap: 28px; padding-block: 68px; }
  .about-seal { width: min(220px, 100%); }
  .footer-inner { grid-template-columns: 1fr auto; gap: 15px; }
  .footer-nav { grid-column: 1 / -1; grid-row: 2; gap: 9px 13px; }
  .footer-inner > p { grid-column: 1 / -1; grid-row: 3; }
  .back-top { grid-column: 2; grid-row: 1; }
  .footer-legal { font-size: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}