:root {
  --bg: #f4f5f7;
  --panel: #fff;
  --line: #e6e7eb;
  --text: #202127;
  --muted: #72757d;
  --accent: #df0018;
  --accent-hover: #bb0014;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color-scheme: light;
  color: var(--text);
  background: var(--panel);
  -webkit-font-smoothing: antialiased;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 105px; }
body { margin: 0; font-size: 15px; line-height: 1.65; }
h1, h2, h3, p, figure { margin: 0; }
a { color: inherit; text-decoration: none; }
button, summary, a { -webkit-tap-highlight-color: transparent; }
img, svg { display: block; max-width: 100%; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
::selection { color: #fff; background: var(--accent); }
.wrap { width: min(1200px, calc(100% - 96px)); margin-inline: auto; }
.icon { width: 24px; height: 24px; flex: 0 0 auto; }
.red { color: var(--accent); }
.skip-link { position: fixed; top: -100px; left: 20px; z-index: 20; padding: 12px 20px; background: #fff; border: 1px solid var(--accent); }
.skip-link:focus { top: 10px; }
.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); backdrop-filter: blur(16px); }
.header-inner { height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 36px; }
.brand { display: flex; align-items: center; justify-content: center; width: 176px; height: 42px; overflow: hidden; background: #fff; flex: 0 0 auto; }
.brand img { width: 190px; max-width: none; height: auto; }
.desktop-nav { display: flex; gap: 36px; margin-left: auto; }
.desktop-nav a { font-size: 14px; color: #5c5e67; }
.desktop-nav a:hover, .login-link:hover { color: var(--accent); }
.header-actions { display: flex; align-items: center; gap: 28px; }
.login-link { font-size: 14px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 30px; min-height: 52px; padding: 12px 24px; border: 1px solid var(--accent); border-radius: 8px; background: var(--accent); color: white; font-size: 14px; font-weight: 600; transition: background .2s, border-color .2s, transform .2s; }
.button:hover { background: var(--accent-hover); border-color: var(--accent-hover); transform: translateY(-1px); }
.button span { font-size: 18px; font-weight: 400; }
.button-small { min-height: 40px; padding: 8px 16px; gap: 20px; font-size: 13px; }
.button-outline { background: transparent; border-color: #d9dbe0; color: var(--text); }
.button-outline:hover { background: var(--bg); border-color: #b9bcc4; }
.eyebrow { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; color: var(--accent); font-size: 11px; font-weight: 650; letter-spacing: 2px; line-height: 1.5; }
.red-dash { width: 24px; height: 2px; background: var(--accent); }
.hero { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; padding-block: 78px 70px; }
.hero > * { min-width: 0; }
.hero h1 { font-size: clamp(64px, 6.1vw, 88px); line-height: .98; font-weight: 700; letter-spacing: -5px; }
.product-name { margin-top: 21px; color: var(--muted); font-size: 18px; letter-spacing: 2px; }
.hero-tagline { margin-top: 35px; font-size: 28px; line-height: 1.45; letter-spacing: -.7px; font-weight: 600; }
.hero-description { margin-top: 14px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.hero-actions { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
.vehicle-line { display: flex; align-items: center; gap: 19px; margin-top: 40px; color: #93959c; font-size: 10px; letter-spacing: 1px; }
.vehicle-line strong { color: #555760; font-size: 12px; margin-left: 5px; }
.vehicle-divider { width: 1px; height: 14px; background: #d5d7dc; }
.product-stage { position: relative; display: flex; flex-direction: column; height: 548px; overflow: hidden; border: 1px solid #ebecef; border-radius: 16px; background: radial-gradient(ellipse at 50% 38%, #fff 0%, #f6f6f8 52%, #edeef1 100%); isolation: isolate; }
.stage-heading { display: flex; justify-content: space-between; gap: 12px; padding: 27px; color: #8b8e98; font-size: 9px; font-weight: 500; letter-spacing: 1.2px; }
.stage-orbit { position: absolute; left: 50%; top: 43%; width: 366px; height: 366px; transform: translate(-50%, -50%); border: 1px solid #e7e8ec; border-radius: 50%; z-index: -1; }
.orbit-two { width: 470px; height: 470px; border-style: dashed; border-color: #e5e6ea; opacity: .8; }
.installer-key { position: absolute; left: 50%; top: 48%; width: 114px; height: 314px; transform: translate(-50%, -50%) rotate(-26deg); filter: drop-shadow(15px 20px 14px rgba(25,27,33,.17)); }
.usb-plug { position: absolute; top: 0; left: 23px; width: 68px; height: 80px; border: 1px solid #aeb1b8; border-radius: 5px 5px 0 0; background: linear-gradient(100deg,#c6c8ce,#eef0f3 38%,#c2c4ca 65%,#979aa4); box-shadow: inset 3px 0 4px #ffffff9c, inset -3px 0 2px #8c8f97; }
.usb-plug i { position: absolute; top: 22px; left: 12px; width: 15px; height: 17px; background: #4d515b; border: 2px solid #8d929c; border-radius: 2px; box-shadow: inset 1px 3px 3px #30333a; }
.usb-plug i + i { left: 40px; }
.usb-plug > span { position: absolute; bottom: 18px; left: 0; right: 0; height: 1px; background: #b4b7be; }
.key-body { position: absolute; inset: 68px 0 0; overflow: hidden; border: 1px solid #262830; border-radius: 12px 12px 22px 22px; background: linear-gradient(105deg,#494c53 0%,#292c33 16%,#202229 68%,#15171d 100%); box-shadow: inset 2px 0 2px #7b7e843b, inset -5px 0 6px #00000040, inset 0 -4px 3px #0000004a; }
.key-seam { position: absolute; top: 14px; left: 8px; right: 8px; height: 1px; background: #0c0d1266; box-shadow: 0 1px #62656b33; }
.key-logo { position: absolute; top: 45px; left: 35px; width: 44px; height: 44px; border-radius: 9px; }
.key-wordmark { position: absolute; top: 111px; left: 0; right: 0; color: #dddfe5; font-size: 11px; line-height: 1.45; letter-spacing: 2px; font-weight: 600; text-align: center; }
.key-light { position: absolute; bottom: 26px; left: 51px; width: 12px; height: 3px; border-radius: 3px; background: #df0018; box-shadow: 0 0 8px #df001875; }
.key-shadow { position: absolute; left: 50%; top: 70%; width: 165px; height: 42px; transform: translateX(-37%) rotate(-26deg); border-radius: 50%; background: #b1b4bd; opacity: .2; filter: blur(18px); }
.stage-label { position: absolute; bottom: 88px; left: 0; right: 0; display: flex; align-items: center; justify-content: center; gap: 8px; color: #6b6f7b; font-size: 11px; letter-spacing: .4px; }
.status-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.product-stage figcaption { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 21px 27px; margin-top: auto; border-top: 1px solid #e0e2e7; color: #555961; font-size: 12px; }
.product-stage figcaption span:last-child { color: #8b8e98; font-size: 10px; }
.intro-strip { border-block: 1px solid var(--line); }
.intro-inner { display: flex; justify-content: space-between; align-items: center; padding-block: 25px; gap: 24px; }
.intro-inner > p { font-size: 15px; font-weight: 500; }
.intro-inner > div { display: flex; gap: 42px; color: var(--muted); font-size: 12px; }
.intro-inner > div > span { display: flex; align-items: center; gap: 10px; }
.intro-inner .icon { width: 19px; height: 19px; color: #8f939c; }
.section-space { padding-block: 96px; scroll-margin-top: 0; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 48px; margin-bottom: 48px; }
.section-heading .eyebrow, .faq-heading .eyebrow { margin-bottom: 19px; }
.section-heading h2, .faq-heading h2 { font-size: 42px; font-weight: 600; letter-spacing: -1.5px; line-height: 1.35; }
.section-intro { max-width: 410px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.hardware-section { background: #f7f7f9; }
.hardware-grid { display: grid; grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr); gap: 90px; align-items: center; }
.hardware-grid > *, .hardware-feature > div { min-width: 0; }
.hardware-feature { display: flex; align-items: flex-start; gap: 18px; padding-block: 21px; border-bottom: 1px solid #e5e6eb; }
.hardware-feature:first-child { padding-top: 0; }
.hardware-feature .icon { width: 22px; height: 22px; margin-top: 3px; color: var(--accent); }
.hardware-feature h3 { font-size: 17px; font-weight: 600; }
.hardware-feature p { margin-top: 7px; color: var(--muted); font-size: 13px; line-height: 1.9; }
.text-link { display: inline-flex; align-items: center; gap: 28px; color: var(--accent); font-size: 13px; font-weight: 600; }
.text-link span { font-size: 18px; }
.text-link:hover { color: var(--accent-hover); }
.hardware-copy > .text-link { margin-top: 24px; }
.ecosystem { padding: 27px 30px 22px; border: 1px solid #e5e6eb; border-radius: 14px; background: #fff; box-shadow: 0 16px 40px #22232904; }
.ecosystem-top { display: flex; align-items: center; justify-content: space-between; color: #a3a6af; }
.small-label { font-size: 9px; letter-spacing: 1.5px; }
.ecosystem-top .icon { width: 16px; height: 16px; }
.connection-flow { display: flex; align-items: flex-start; justify-content: center; gap: 0; margin-block: 40px 30px; }
.connection-node { display: flex; flex-direction: column; align-items: center; gap: 12px; flex: 0 0 92px; }
.connection-node > .icon { width: 30px; height: 30px; margin-block: 13px; color: #5d626e; }
.connection-node > span { color: #747883; font-size: 10px; white-space: nowrap; }
.connection-key img { width: 56px; height: 56px; border-radius: 12px; border: 1px solid var(--line); }
.connection-line { width: 58px; height: 1px; margin-top: 28px; background: #dedfe5; position: relative; flex: 1; }
.connection-line::after { content: ''; position: absolute; right: 0; top: -2px; width: 5px; height: 5px; border-top: 1px solid #b6bac4; border-right: 1px solid #b6bac4; transform: rotate(45deg); }
.app-library { border: 1px solid var(--line); border-radius: 10px; background: #fafafb; padding: 20px; }
.library-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 23px; }
.library-heading strong { font-size: 12px; font-weight: 500; }
.library-heading > span { color: #9296a0; font-size: 9px; letter-spacing: .7px; }
.library-apps { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px 14px; }
.library-apps > div { display: flex; flex-direction: column; align-items: center; gap: 10px; color: #767b86; font-size: 10px; white-space: nowrap; }
.library-apps .icon { width: 46px; height: 46px; padding: 11px; border: 1px solid #e8e9ed; border-radius: 12px; background: #fff; color: var(--accent); }
.library-more .icon { border-style: dashed; background: transparent; color: #9ea3af; }
.ecosystem-caption { margin-top: 20px; text-align: center; color: #8c919b; font-size: 11px; }
.app-cards { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 22px; }
.app-card { display: flex; flex-direction: column; min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.app-visual { position: relative; height: 266px; overflow: hidden; color: #fff; background: #15171d; }
.app-cards .app-visual { height: 320px; }
.app-cards .gallery-visual { display: flex; flex-direction: column; background: #0b0d12; }
.gallery-screen { flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; padding: 12px 14px; }
.gallery-screen img { width: 100%; height: 100%; object-fit: contain; }
.gallery-controls { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 4px; padding-inline: 14px; }
.track-gallery .gallery-controls { grid-template-columns: repeat(4,minmax(0,1fr)); }
.gallery-controls button { min-width: 0; min-height: 25px; padding: 4px 3px; border: 1px solid #303540; border-radius: 4px; background: #171b23; color: #a3abb9; font: inherit; font-size: 9px; line-height: 1.2; cursor: pointer; }
.gallery-controls button:hover { color: #fff; border-color: #677283; }
.gallery-controls button[aria-pressed="true"] { background: #df0018; border-color: #df0018; color: #fff; }
.gallery-controls button:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.gallery-caption { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 10px 14px 12px; color: #929bac; font-size: 9px; }
.gallery-caption > span:last-child { font-size: 8px; color: #767e8d; }
.projection-cards { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px; margin-bottom: 24px; }
.projection-visual { background: radial-gradient(ellipse at 85% 30%, #263040, #151923 85%); }
.carlife-visual { background: radial-gradient(ellipse at 85% 30%, #1b3640, #111d25 85%); }
.projection-phone { position: absolute; top: 101px; left: 31px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; width: 58px; height: 119px; border: 2px solid #637080; border-radius: 12px; background: #171b23; box-shadow: inset 0 0 0 3px #252d39, 8px 9px 15px #00000026; }
.phone-speaker { position: absolute; width: 17px; height: 3px; border-radius: 3px; top: 9px; background: #5f6a7a; }
.projection-phone img { width: 27px; height: 27px; border-radius: 6px; }
.projection-phone > span:last-child { font-size: 7px; color: #9aa6b7; }
.projection-signal { position: absolute; left: 98px; top: 147px; color: #8998ab; }
.projection-signal .icon { width: 18px; height: 18px; }
.projection-screen { position: absolute; inset: 68px 24px 25px 130px; display: flex; flex-direction: column; overflow: hidden; border: 1px solid #586374; border-radius: 9px; background: #1b2533; box-shadow: 0 15px 30px #00000026; }
.carlife-visual .projection-screen { background: #192d36; border-color: #45606c; }
.projection-screen-heading { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 11px 14px; }
.projection-screen-heading strong { font-size: 12px; font-weight: 500; }
.projection-screen-heading > span { font-size: 6px; color: #8594a9; letter-spacing: 1px; }
.projection-map { position: relative; flex: 1; overflow: hidden; border-top: 1px solid #ffffff08; }
.projection-map svg { width: 100%; height: 100%; }
.projection-functions { display: flex; align-items: center; justify-content: space-around; padding: 9px 12px; background: #11192599; border-top: 1px solid #ffffff09; font-size: 8px; color: #acb9cd; }
.carlife-visual .projection-functions { background: #0e202899; color: #aac7cc; }
.screen-top { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 10px; z-index: 1; padding: 19px 19px 0; color: #7e8592; font-size: 8px; letter-spacing: .8px; }
.visual-caption { color: #838b9a; font-size: 9px; letter-spacing: 0; }
.cluster-visual { background: #071722; }
.cluster-layout { display: flex; justify-content: center; gap: 20px; height: 218px; margin-top: 16px; }
.cluster-layout img { width: 117px; height: 207px; object-fit: contain; border: 1px solid #224453; border-radius: 5px; }
.cluster-side { display: flex; flex-direction: column; padding-top: 17px; }
.cluster-side > span { font-size: 8px; letter-spacing: 1px; color: #6c9fac; }
.cluster-side strong { font-size: 27px; color: #dfedf3; letter-spacing: -.6px; font-weight: 500; line-height: 1.4; margin-bottom: 12px; }
.cluster-side small { font-size: 11px; margin-left: 4px; color: #93b7c5; }
.cluster-side .cluster-side-note { margin-top: 6px; line-height: 1.8; font-size: 10px; letter-spacing: .2px; color: #728f9e; }
.app-card-copy { padding: 26px 25px 23px; flex: 1; display: flex; flex-direction: column; }
.app-card-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 18px; }
.app-type { font-size: 9px; letter-spacing: 1.3px; color: #9b9ea7; }
.development-badge { font-size: 10px; padding: 3px 8px; border: 1px solid #e5e7eb; color: #81858e; border-radius: 4px; background: #f8f8fa; }
.app-development:disabled { align-self: flex-start; margin-top: 20px; padding: 10px 22px; border: 1px solid #e5e7eb; border-radius: 8px; color: #81858e; background: #f1f2f4; font: inherit; font-size: 13px; font-weight: 600; cursor: not-allowed; }
.app-card h3 { font-size: 22px; line-height: 1.4; letter-spacing: -.5px; font-weight: 600; }
.app-english { margin-top: 4px; font-size: 12px; color: #999ca5; }
.app-description { margin-top: 21px; margin-bottom: 21px; font-size: 13px; line-height: 1.9; color: var(--muted); }
.feature-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: auto 0 0; padding: 0; list-style: none; }
.feature-tags li { background: #f5f5f7; border-radius: 4px; padding: 4px 7px; color: #7e818b; font-size: 10px; }
.app-preview-note { font-size: 10px; line-height: 1.8; color: #9296a0; margin: -9px 0 18px; }
.settings-visual { display: flex; flex-direction: column; background: radial-gradient(ellipse at 50% 40%, #2b2732, #15171d 80%); }
.settings-overview { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px; padding: 24px 20px; text-align: center; }
.settings-symbol { display: grid; place-items: center; width: 76px; height: 76px; border: 1px solid #df00184d; border-radius: 18px; color: #f05265; background: #df001812; }
.settings-symbol .icon { width: 38px; height: 38px; }
.settings-overview strong { color: #edf0f5; font-size: 22px; line-height: 1.5; font-weight: 500; }
.settings-overview > span { color: #939baa; font-size: 11px; line-height: 1.8; }
.settings-features { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; color: var(--muted); font-size: 13px; line-height: 1.8; }
.settings-features li { display: flex; gap: 10px; align-items: flex-start; }
.settings-features li::before { content: ''; width: 4px; height: 4px; margin-top: .75em; flex: 0 0 auto; border-radius: 50%; background: var(--accent); }
.apps-note { margin-top: 22px; font-size: 11px; color: #9296a0; line-height: 1.8; }
.start-section { background: #23242b; color: #fff; }
.start-section .eyebrow { color: #f06472; }
.start-section .section-intro { color: #92949f; }
.steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 34px; padding: 0; margin: 58px 0 0; list-style: none; counter-reset: none; }
.steps li { position: relative; border-top: 1px solid #484952; padding-top: 24px; }
.step-number { font-size: 11px; color: #8f919c; letter-spacing: 1px; }
.step-icon { position: absolute; top: 23px; right: 0; color: #777a87; }
.step-icon .icon { width: 24px; height: 24px; }
.steps h3 { margin-top: 34px; font-size: 17px; font-weight: 500; }
.steps p { margin-top: 12px; color: #9da0ad; font-size: 12px; line-height: 1.95; max-width: 230px; }
.faq-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: 90px; }
.faq-heading h2 { font-size: 33px; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list details:first-child { border-top: 1px solid var(--line); }
.faq-list summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 22px; cursor: pointer; padding-block: 23px; font-size: 14px; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary > span { color: #989ca5; font-size: 21px; font-weight: 300; line-height: 1; transition: transform .2s; }
.faq-list details[open] summary > span { transform: rotate(45deg); color: var(--accent); }
.faq-list details > p { margin: -5px 26px 23px 0; color: var(--muted); font-size: 13px; line-height: 1.9; }
.closing { display: flex; justify-content: space-between; align-items: center; gap: 36px; padding: 49px 54px; border: 1px solid var(--line); border-radius: 14px; background: #f7f7f9; margin-bottom: 70px; }
.closing .eyebrow { margin-bottom: 13px; }
.closing h2 { font-size: 34px; font-weight: 600; letter-spacing: -1px; line-height: 1.4; }
.closing p:not(.eyebrow) { margin-top: 12px; font-size: 13px; color: var(--muted); }
.closing-actions { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.closing-actions .text-link { color: #81858e; font-size: 12px; font-weight: 400; }
.site-footer { display: flex; align-items: center; gap: 30px; border-top: 1px solid var(--line); padding-block: 30px; color: #9699a2; font-size: 11px; }
.footer-brand { width: 135px; height: 32px; }
.footer-brand img { width: 148px; }
.site-footer > span { margin-left: auto; }
@media (min-width: 1600px) { .hero h1 { font-size: 88px; } }
@media (max-width: 1100px) {
  .wrap { width: calc(100% - 64px); }
  .hero { gap: 36px; padding-block: 60px; }
  .hero h1 { font-size: 72px; }
  .hero-tagline { font-size: 24px; }
  .hero-description { font-size: 13px; }
  .desktop-break { display: none; }
  .product-stage { height: 520px; }
  .hardware-grid, .faq-section { gap: 45px; }
  .section-heading h2 { font-size: 36px; }
  .ecosystem { padding-inline: 22px; }
  .app-cards { gap: 16px; }
  .app-card-copy { padding-inline: 20px; }
  .app-card h3 { font-size: 19px; }
  .screen-top { padding-inline: 14px; font-size: 7px; letter-spacing: .4px; }
  .cluster-layout { gap: 10px; }
  .cluster-side strong { font-size: 24px; }
  .cluster-layout img { width: 105px; height: 186px; margin-top: 10px; }
}
@media (max-width: 850px) {
  .desktop-nav { gap: 22px; }
  .header-inner { gap: 20px; height: 74px; }
  .header-actions { gap: 18px; }
  .brand { width: 145px; height: 34px; }
  .brand img { width: 159px; }
  .hero { gap: 24px; }
  .hero h1 { font-size: 64px; letter-spacing: -3.5px; }
  .hero-tagline { font-size: 22px; }
  .product-stage { height: 508px; }
  .stage-heading { padding-inline: 18px; font-size: 7px; }
  .product-stage figcaption { padding-inline: 18px; font-size: 11px; }
  .hero-actions .button { padding-inline: 15px; gap: 13px; font-size: 12px; }
  .intro-inner > div { gap: 20px; }
  .intro-inner > p { font-size: 13px; }
  .section-space { padding-block: 72px; }
  .section-heading { gap: 30px; }
  .section-heading h2 { font-size: 32px; }
  .section-intro { max-width: 320px; font-size: 12px; }
  .hardware-grid { grid-template-columns: minmax(0,1fr); gap: 36px; }
  .hardware-copy { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
  .hardware-feature, .hardware-feature:first-child { display: block; padding: 0 0 20px; }
  .hardware-feature .icon { margin-bottom: 12px; }
  .hardware-feature h3 { font-size: 15px; }
  .hardware-feature p { font-size: 12px; }
  .hardware-copy > .text-link { grid-column: 1 / -1; margin-top: -10px; }
  .connection-line { max-width: 100px; }
  .app-cards { grid-template-columns: 1fr; }
  .projection-cards { grid-template-columns: 1fr; gap: 16px; }
  .app-card { flex-direction: row; }
  .app-visual { width: 44%; height: auto; flex: 0 0 44%; min-height: 320px; }
  .app-cards .app-visual { height: auto; min-height: 340px; }
  .app-cards .gallery-visual { flex: 0 0 44%; height: auto; min-height: 0; }
  .gallery-controls { gap: 6px; }
  .gallery-controls button { min-height: 44px; font-size: 11px; padding: 6px 4px; }
  .gallery-screen { flex: 0 0 auto; display: block; }
  .gallery-screen img { height: auto; aspect-ratio: 5 / 3; }
  .gallery-caption { font-size: 10px; }
  .gallery-caption > span:last-child { font-size: 9px; }
  .app-card-copy { padding: 23px 26px; }
  .app-description { margin-block: 16px; }
  .cluster-layout { margin-top: 34px; }
  .projection-screen { inset: 80px 16px 51px 94px; }
  .projection-phone { left: 17px; top: 135px; width: 47px; height: 104px; }
  .projection-signal { left: 71px; top: 178px; }
  .projection-signal .icon { width: 15px; height: 15px; }
  .projection-screen-heading { padding: 10px; }
  .projection-screen-heading > span { display: none; }
  .steps { gap: 24px; }
  .steps h3 { font-size: 15px; }
  .faq-section { grid-template-columns: .7fr 1.3fr; gap: 30px; }
  .faq-heading h2 { font-size: 28px; }
  .closing { padding: 36px; }
  .closing h2 { font-size: 29px; }
}
@media (max-width: 740px) {
  html { scroll-padding-top: 123px; }
  .wrap { width: calc(100% - 40px); }
  .header-inner { display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-rows: 60px 44px; height: auto; gap: 0 16px; padding-bottom: 6px; }
  .header-inner > .brand { grid-column: 1; grid-row: 1; }
  .header-actions { grid-column: 2; grid-row: 1; }
  .brand { width: 130px; height: 32px; }
  .brand img { width: 143px; }
  .desktop-nav { grid-column: 1 / -1; grid-row: 2; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; width: 100%; margin-left: 0; border-top: 1px solid var(--line); }
  .desktop-nav a { display: flex; align-items: center; justify-content: center; min-height: 44px; font-size: 12px; }
  .login-link { display: inline-flex; align-items: center; justify-content: center; min-width: 60px; min-height: 44px; padding: 8px 14px; border: 1px solid var(--line); border-radius: 7px; background: #f7f7f9; font-size: 13px; }
  .button-small { min-height: 36px; padding: 7px 12px; gap: 12px; font-size: 11px; }
  .hero { grid-template-columns: minmax(0, 1fr); gap: 28px; padding-block: 32px; }
  .eyebrow { font-size: 9px; margin-bottom: 22px; letter-spacing: 1.6px; }
  .hero h1 { font-size: clamp(62px, 18vw, 86px); letter-spacing: -3px; }
  .product-name { margin-top: 16px; font-size: 16px; }
  .hero-tagline { margin-top: 26px; font-size: 25px; letter-spacing: -.8px; }
  .hero-description { font-size: 14px; margin-top: 12px; max-width: 440px; }
  .hero-actions { margin-top: 24px; }
  .hero-actions .button { padding-inline: 18px; font-size: 12px; gap: 17px; min-height: 48px; }
  .vehicle-line { margin-top: 27px; font-size: 9px; gap: 16px; }
  .product-stage { height: clamp(340px, 92vw, 380px); border-radius: 12px; }
  .stage-heading { padding: 21px; font-size: 8px; }
  .stage-orbit { width: 275px; height: 275px; }
  .orbit-two { width: 355px; height: 355px; }
  .installer-key { transform: translate(-50%, -50%) rotate(-26deg) scale(.67); top: 42%; }
  .key-shadow { top: 65%; width: 135px; }
  .stage-label { bottom: 66px; font-size: 10px; }
  .product-stage figcaption { padding: 18px 21px; }
  .intro-inner { display: block; padding-block: 22px; }
  .intro-inner > p { font-size: 14px; margin-bottom: 15px; }
  .intro-inner > div { justify-content: space-between; gap: 12px; font-size: 11px; }
  .intro-inner > div > span { gap: 7px; }
  .intro-inner .icon { width: 16px; height: 16px; }
  .section-space { padding-block: 58px; }
  .section-heading { display: block; margin-bottom: 29px; }
  .section-heading .eyebrow { margin-bottom: 17px; }
  .section-heading h2 { font-size: 31px; letter-spacing: -1px; }
  .section-intro { margin-top: 19px; font-size: 14px; max-width: none; }
  .section-intro br { display: none; }
  .hardware-grid { gap: 29px; }
  .hardware-copy { display: block; }
  .hardware-feature, .hardware-feature:first-child { display: flex; gap: 15px; padding-block: 21px; }
  .hardware-feature:first-child { padding-top: 0; }
  .hardware-feature .icon { margin-bottom: 0; }
  .hardware-feature h3 { font-size: 16px; }
  .hardware-feature p { font-size: 13px; }
  .hardware-copy > .text-link { margin-top: 20px; }
  .text-link { min-height: 44px; }
  .ecosystem { padding: 22px 17px 20px; }
  .connection-flow { margin-block: 30px 24px; }
  .connection-node { flex-basis: 76px; }
  .connection-node > span { font-size: 9px; }
  .connection-key img { width: 50px; height: 50px; }
  .connection-node > .icon { width: 26px; height: 26px; margin-block: 12px; }
  .connection-line { margin-top: 25px; }
  .app-library { padding: 16px 12px; }
  .library-apps { gap: 10px; }
  .library-apps > div { font-size: 8px; }
  .library-apps .icon { width: 40px; height: 40px; padding: 9px; border-radius: 10px; }
  .app-cards { gap: 24px; }
  .projection-cards { gap: 24px; }
  .app-card { flex-direction: column; border-radius: 12px; }
  .app-visual { width: 100%; height: 244px; flex: 0 0 auto; min-height: 0; }
  .app-cards .app-visual { height: 310px; min-height: 0; }
  .app-cards .gallery-visual { flex: 0 0 auto; height: auto; }
  .gallery-screen { padding: 12px 14px; }
  .gallery-controls button { min-height: 44px; font-size: 12px; }
  .gallery-caption { padding-block: 12px 14px; font-size: 11px; }
  .gallery-caption > span:last-child { font-size: 10px; }
  .screen-top { padding: 18px 19px 0; font-size: 8px; }
  .cluster-layout { margin-top: 13px; gap: 25px; height: 194px; }
  .cluster-layout img { width: 108px; height: 191px; margin-top: 0; }
  .cluster-side strong { font-size: 27px; }
  .cluster-side { padding-top: 12px; }
  .projection-screen { inset: 63px 17px 24px 104px; }
  .projection-phone { left: 20px; top: 97px; width: 47px; height: 108px; }
  .projection-signal { left: 76px; top: 143px; }
  .app-card-copy { padding: 24px; }
  .app-card-heading { align-items: flex-start; }
  .app-type { min-width: 0; line-height: 1.7; letter-spacing: .8px; }
  .development-badge { flex: 0 0 auto; white-space: nowrap; }
  .app-card h3 { font-size: 22px; }
  .app-description { margin-block: 18px; font-size: 14px; }
  .app-preview-note { font-size: 12px; }
  .settings-features { font-size: 14px; }
  .feature-tags { margin-bottom: 0; }
  .feature-tags li { font-size: 11px; }
  .apps-note { font-size: 12px; margin-top: 20px; }
  .steps { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 34px 25px; margin-top: 34px; }
  .steps li { padding-top: 17px; }
  .step-icon { top: 18px; }
  .step-icon .icon { width: 20px; height: 20px; }
  .steps h3 { margin-top: 27px; font-size: 15px; }
  .steps p { font-size: 13px; margin-top: 10px; }
  .faq-section { grid-template-columns: 1fr; gap: 29px; }
  .faq-heading h2 { font-size: 30px; }
  .faq-list summary { font-size: 14px; padding-block: 20px; gap: 18px; }
  .faq-list details > p { font-size: 13px; }
  .closing { flex-direction: column; align-items: flex-start; gap: 25px; padding: 30px 25px; margin-bottom: 40px; }
  .closing h2 { font-size: 27px; }
  .closing-actions { align-items: flex-start; width: 100%; }
  .closing-actions .button { width: 100%; justify-content: space-between; font-size: 12px; min-height: 48px; }
  .closing-actions .text-link { align-self: flex-start; font-size: 13px; }
  .site-footer { flex-wrap: wrap; gap: 13px 20px; padding-block: 23px; }
  .footer-brand { width: 119px; height: 28px; }
  .footer-brand img { width: 131px; }
  .site-footer > p { font-size: 10px; }
  .site-footer > span { width: 100%; margin-left: 0; font-size: 10px; }
}
@media (max-width: 360px) {
  .wrap { width: calc(100% - 32px); }
  .hero h1 { font-size: 66px; }
  .hero-tagline { font-size: 22px; }
  .hero-actions .button { padding-inline: 13px; gap: 9px; font-size: 11px; }
  .app-card-copy { padding-inline: 20px; }
  .gallery-controls button { font-size: 11px; }
  .gallery-caption { font-size: 10px; }
  .gallery-caption > span:last-child { font-size: 9px; }
  .steps { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .steps h3 { margin-top: 16px; }
  .steps p { max-width: none; }
  .connection-node { flex-basis: 71px; }
  .library-apps { gap: 6px; }
  .closing { padding-inline: 22px; }
}
@media (pointer: coarse) and (min-width: 741px) {
  .desktop-nav a, .login-link, .text-link { display: inline-flex; align-items: center; min-height: 44px; }
  .gallery-controls button { min-height: 44px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}