:root {
  color-scheme: dark;
  --bg: #1e1e1e;
  --bg-alt: #222222;
  --surface: #272727;
  --border: #3b3b3b;
  --border-strong: #707070;
  --text: #f2f1ed;
  --muted: #b0afab;
  --accent: #8ab8f8;
  --accent-solid: #2463b9;
  --danger: #f49a94;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  --header-h: 88px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 24px); }
body {
  margin: 0;
  font: 400 16px/1.7 var(--font);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--accent-solid); color: #fff; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; text-underline-offset: .25em; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0 0 .7em; font-weight: 500; line-height: 1.15; letter-spacing: -.035em; text-wrap: balance; }
p { margin: 0 0 1.2em; }
strong { font-weight: 600; }
button, input, select, textarea { font: inherit; }
button { color: inherit; }
button, a, input, select, textarea { -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }

.container { width: min(1320px, 100% - 6rem); margin-inline: auto; }
.container.narrow { width: min(1000px, 100% - 6rem); }
.muted { color: var(--muted); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }
.skip-link { position: absolute; left: -999px; top: 1rem; background: var(--text); color: var(--bg); padding: .75rem 1rem; z-index: 100; }
.skip-link:focus { left: 1rem; }

/* Navigation and actions */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .65rem;
  min-height: 44px; padding: .75rem 1.15rem; border: 1px solid transparent; border-radius: 2px;
  font: 500 .83rem/1.4 var(--font); text-align: center; white-space: normal; cursor: pointer;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--text); color: var(--bg); }
.btn-primary:hover { background: #d7d7d2; }
.btn-ghost { color: var(--text); background: transparent; border-color: var(--border); }
.btn-ghost:hover, .btn-outline:hover { border-color: var(--text); background: #303030; }
.btn-outline { color: var(--text); border-color: var(--border-strong); background: transparent; }
.btn-lg { padding: 1rem 1.4rem; font-size: .9rem; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .6; cursor: progress; }
.btn.loading::after {
  content: ""; width: 16px; height: 16px; flex-shrink: 0; border-radius: 50%;
  border: 2px solid currentColor; border-right-color: transparent; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.site-header {
  position: sticky; top: 0; z-index: 50; height: var(--header-h);
  background: var(--bg); border-bottom: 1px solid var(--border);
}
.site-header.scrolled { background: #1e1e1ef5; }
.header-inner { height: 100%; display: flex; align-items: center; gap: 1.5rem; }
.brand { flex-shrink: 0; }
.brand img { width: 144px; height: auto; }
.brand img, .footer-inner img { filter: brightness(1.75); }
.main-nav { display: flex; gap: 1.6rem; margin-inline: auto; }
.main-nav > a { color: var(--muted); font-size: .8rem; white-space: nowrap; }
.main-nav > a:hover { color: var(--text); text-decoration: none; }
.header-ctas { display: flex; gap: .6rem; }
.header-ctas .btn { white-space: nowrap; }
.nav-ctas-mobile { display: none; }
.nav-toggle { display: none; background: none; border: 0; padding: .6rem; cursor: pointer; margin-left: auto; }
.nav-toggle span { display: block; width: 24px; height: 1px; background: var(--text); margin: 6px 0; transition: transform .18s, opacity .18s; }

/* Opening composition */
.hero { padding-top: clamp(3.5rem, 7vw, 7rem); }
.hero-grid { display: grid; grid-template-columns: 1.12fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; padding-bottom: 5rem; }
.hero-copy { min-width: 0; }
.eyebrow, .kicker, .price-label {
  display: block; font: 500 .7rem/1.6 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted);
}
.eyebrow { margin-bottom: 2rem; padding-left: 1.8rem; position: relative; }
.eyebrow::before { content: ""; position: absolute; left: 0; top: .5em; width: 15px; height: 2px; background: var(--accent); }
.hero h1 { font-size: clamp(2.9rem, 4.7vw, 4.7rem); font-weight: 400; line-height: 1.05; letter-spacing: -.055em; margin-bottom: 1.8rem; }
.hero-heading-secondary { display: block; color: var(--muted); }
.lead { font-size: 1rem; color: var(--muted); max-width: 52ch; line-height: 1.8; }
.lead strong { font-weight: 500; color: var(--text); }
.hero-coverage { font-size: .76rem; line-height: 1.7; margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--border); max-width: 58ch; }
.hero-coverage strong { display: block; font-weight: 500; color: var(--text); }
.hero-coverage a { display: inline-block; margin-top: .3rem; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.hero-visual { position: relative; aspect-ratio: 1 / 1.05; min-width: 0; }
.hero-laptop { position: absolute; top: 6%; right: 0; width: 94%; }
.hero-phone { position: absolute; left: 0; bottom: 0; width: 28%; z-index: 2; }
.hero-dongle { position: absolute; right: 0; bottom: 0; width: 46%; border: 1px solid var(--border-strong); overflow: hidden; }
.hero-dongle img { aspect-ratio: 1.35; object-fit: cover; }
.browser { overflow: hidden; background: var(--surface); border: 1px solid var(--border-strong); border-radius: 3px; }
.browser-bar { display: flex; align-items: center; gap: 5px; padding: 10px 12px; background: #303030; border-bottom: 1px solid var(--border); }
.browser-bar span { width: 6px; height: 6px; border-radius: 50%; background: #858585; flex-shrink: 0; }
.browser-bar em { margin-left: 10px; font: 500 .6rem var(--mono); font-style: normal; color: #c5c5c1; }
.shot { overflow: hidden; background: #ededed; }
.shot img { width: 100%; }
.shot.fixed-ratio { aspect-ratio: 16 / 10; }
.phone { margin: 0; padding: 6px; border-radius: 24px; background: #181818; border: 1px solid var(--border-strong); }
.phone-screen { border-radius: 18px; overflow: hidden; aspect-ratio: 408 / 888; background: var(--bg); }
.phone-screen img { width: 100%; height: 100%; object-fit: cover; object-position: bottom; }
.trust-bar { border-block: 1px solid var(--border); }
.trust-inner { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.5rem; padding-block: 1.5rem; }
.trust-inner > span { display: flex; align-items: center; gap: .75rem; color: var(--muted); font-size: .73rem; line-height: 1.5; }
.trust-inner svg, .icon svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }

/* Editorial section hierarchy */
.section { padding: clamp(4rem, 7.5vw, 7rem) 0; border-bottom: 1px solid var(--border); }
.section-alt { background: var(--bg-alt); }
.section-head { display: grid; grid-template-columns: 1fr 2.2fr; gap: 0 3rem; margin: 0 0 3.5rem; }
.section-head .kicker { grid-column: 1; grid-row: 1; padding-top: .5rem; }
.section-head h2 { grid-column: 2; font-size: clamp(2rem, 3.5vw, 3.4rem); font-weight: 400; max-width: 24ch; }
.section-head p { grid-column: 2; color: var(--muted); font-size: .98rem; max-width: 65ch; margin: 0; }
.section-head.left { display: block; margin: 0; }
.section-head.left .kicker { margin-bottom: 1.5rem; }
.section-head.left h2 { max-width: 20ch; }
.card { min-width: 0; background: transparent; border-top: 1px solid var(--border); padding: 1.75rem 0; }
.icon { display: grid; place-items: center; width: 32px; height: 32px; color: var(--muted); flex-shrink: 0; }
.icon svg { width: 24px; height: 24px; }
.pill { display: inline-block; padding: .2rem .55rem; font: 500 .63rem/1.5 var(--mono); text-transform: uppercase; letter-spacing: .05em; color: var(--accent); border: 1px solid var(--border-strong); }
.check-list { list-style: none; padding: 0; margin: 1.2rem 0 0; display: grid; gap: .8rem; }
.check-list li { position: relative; padding-left: 1.5rem; color: var(--muted); font-size: .9rem; }
.check-list strong { color: var(--text); font-weight: 500; }
.check-list li::before { content: ""; position: absolute; left: 0; top: .65em; width: 7px; height: 4px; border-left: 1px solid var(--accent); border-bottom: 1px solid var(--accent); transform: rotate(-45deg); }

/* Value proposition */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start; }
.pillars { display: grid; }
.pillar { display: flex; gap: 1.25rem; }
.pillar h3 { font-size: 1.2rem; margin-bottom: .6rem; }
.pillar h3 small { display: block; font: 500 .65rem var(--mono); color: var(--accent); letter-spacing: .05em; margin-top: .7rem; }
.pillar p { color: var(--muted); margin: 0; font-size: .93rem; }
.feature-photo { margin: 0; border: 1px solid var(--border); }
.feature-photo > img { width: 100%; }
.feature-photo figcaption { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; padding: 1rem 1.25rem; color: var(--muted); font-size: .75rem; background: var(--surface); }

/* Product interface */
.tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-bottom: 3rem; border-bottom: 1px solid var(--border); }
.tabs [role="tab"] {
  position: relative; min-width: 0; text-align: left; padding: 1.25rem 1rem 1.25rem 0; cursor: pointer;
  background: transparent; border: 0; color: var(--muted); transition: color .18s ease;
}
.tabs [role="tab"] strong { display: block; font-size: .95rem; font-weight: 500; }
.tabs [role="tab"] span { display: block; margin-top: .35rem; font: 500 .65rem var(--mono); }
.tabs [role="tab"]:hover { color: var(--text); }
.tabs [role="tab"][aria-selected="true"] { color: var(--text); }
.tabs [role="tab"][aria-selected="true"]::after { content: ""; position: absolute; bottom: -1px; left: 0; right: 0; height: 2px; background: var(--accent); }
.tab-panel { animation: fade .2s ease; }
@keyframes fade { from { opacity: .5; } to { opacity: 1; } }
.panel-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 4rem; align-items: center; }
.panel-grid > * { min-width: 0; }
.panel-copy h3 { font-size: clamp(1.6rem, 2.5vw, 2.2rem); }
.panel-copy p { color: var(--muted); font-size: .95rem; }
.thumbs { display: flex; flex-wrap: wrap; gap: 1.5rem; margin-top: 1.25rem; }
.thumbs button { min-height: 44px; padding: .5rem 0; font-size: .75rem; cursor: pointer; color: var(--muted); background: none; border: 0; border-bottom: 1px solid transparent; }
.thumbs button[aria-pressed="true"] { color: var(--text); border-bottom-color: var(--accent); }
.phones-row { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1.75rem; }
.phone.small { border-radius: 20px; padding: 5px; }
.phone.small .phone-screen { border-radius: 15px; }
.phone.small figcaption { text-align: center; font: 500 .65rem var(--mono); color: var(--muted); padding: .9rem 0 .4rem; }
.feature-chips { list-style: none; padding: 0; margin: 2.5rem 0 0; display: flex; flex-wrap: wrap; gap: 0 2rem; border-top: 1px solid var(--border); }
.feature-chips li { padding: .85rem 0; color: var(--muted); font-size: .78rem; }
.dongle-photo { overflow: hidden; border: 1px solid var(--border); }
.dongle-photo img { width: 100%; }

/* Process and technical coverage */
.timeline { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2rem; }
.timeline li { min-width: 0; border-top: 1px solid var(--border-strong); padding-top: 1.5rem; }
.step-num { display: block; font: 400 2.5rem/1 var(--font); letter-spacing: -.05em; color: var(--muted); margin-bottom: 2.5rem; }
.timeline h3 { font-size: 1.15rem; max-width: 22ch; }
.timeline p { color: var(--muted); font-size: .87rem; margin: 0; }
.protocol-badges { display: flex; flex-wrap: wrap; gap: .75rem 2rem; padding-bottom: 2rem; }
.badge { font: 500 .68rem/1.6 var(--mono); color: var(--muted); }
.badge b { font-weight: 500; color: var(--text); margin-right: .3rem; }
.coverage-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4rem; }
.coverage-card h3 { font-size: 1.6rem; max-width: 26ch; }
.coverage-card > .pill { margin-bottom: 1.5rem; }
.coverage-card > p { font-size: .92rem; }
.coverage-card > p:last-child { margin-bottom: 0; }
.vehicle-models { list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 1.5rem; padding: 0; margin: 1.5rem 0 2rem; }
.vehicle-models li { padding: .75rem 0; border-bottom: 1px solid var(--border); font-size: .92rem; }
.cta-banner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem; margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.cta-banner p { margin: 0; font-size: 1rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2rem; }
.feature .icon { margin-bottom: 1.5rem; }
.feature h3 { font-size: 1.2rem; }
.feature p { color: var(--muted); font-size: .9rem; margin: 0; }

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-block: 1px solid var(--border-strong); }
.price-card { display: flex; flex-direction: column; padding: 2.5rem; border: 0; border-right: 1px solid var(--border); }
.price-card:last-child { border-right: 0; }
.price-card.highlight { background: var(--surface); box-shadow: inset 0 2px var(--accent); }
.price-label { margin-bottom: 1.5rem; }
.price-card h3 { font-size: 1.25rem; }
.price-amount { display: flex; align-items: baseline; gap: .65rem; margin-top: 1.5rem; }
.price-currency { font: 500 .7rem var(--mono); color: var(--muted); }
.price-amount strong { font-size: clamp(3rem, 5vw, 4.5rem); font-weight: 400; line-height: 1; letter-spacing: -.06em; font-variant-numeric: tabular-nums; }
.price-unit { font: 500 .65rem/1.7 var(--mono); color: var(--muted); margin: .75rem 0 2rem; }
.price-card > .muted { font-size: .9rem; }
.price-card .check-list { margin-top: auto; padding-top: 1.5rem; }
.price-card .check-list li { font-size: .8rem; }
.pricing-cta p { flex: 1 1 300px; font-size: .85rem; color: var(--muted); }
.pricing-cta strong { color: var(--text); font-weight: 500; }

/* Support and terms */
.support { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start; }
.support > * { min-width: 0; }
.support-list { display: grid; }
.support-item { display: flex; gap: 1.5rem; align-items: flex-start; }
.support-item h3 { font-size: 1.1rem; margin-bottom: .5rem; }
.support-item p { margin: 0; color: var(--muted); font-size: .9rem; }
#contract .feature > p { margin-top: 1.5rem; }
.faq { border-top: 1px solid var(--border-strong); }
.faq details { border-bottom: 1px solid var(--border); }
.faq summary { list-style: none; cursor: pointer; padding: 1.5rem 3rem 1.5rem 0; font-size: .95rem; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: .5rem; top: 50%; transform: translateY(-50%); font: 400 1.4rem var(--font); color: var(--muted); }
.faq details[open] summary::after { content: "-"; color: var(--accent); }
.faq details p { padding: 0 3rem 1.75rem 0; margin: 0; color: var(--muted); font-size: .9rem; max-width: 80ch; }

/* Inquiry form */
.contact { background: var(--bg); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 5rem; align-items: start; }
.contact-grid > * { min-width: 0; }
.contact-copy .kicker { margin-bottom: 1.5rem; }
.contact-copy h2 { font-size: clamp(2rem, 3.5vw, 3.4rem); font-weight: 400; max-width: 18ch; }
.contact-copy > p { color: var(--muted); font-size: .95rem; }
.contact-copy .check-list { margin-bottom: 2rem; }
.form { padding: 2rem; background: var(--bg-alt); border: 1px solid var(--border); }
.field { display: grid; gap: .6rem; margin-top: 1.25rem; font-size: .75rem; color: var(--muted); min-width: 0; grid-template-columns: minmax(0, 1fr); }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 1.25rem; }
.form > .field-row:first-child .field { margin-top: 0; }
input, select, textarea { min-width: 0; width: 100%; padding: .85rem .8rem; border-radius: 2px; font: 400 .85rem var(--font); color: var(--text); background: var(--bg); border: 1px solid var(--border-strong); transition: border-color .18s ease; }
input::placeholder, textarea::placeholder { color: var(--muted); opacity: 1; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 2px; border-color: var(--accent); }
select { cursor: pointer; }
textarea { resize: vertical; min-height: 130px; }
.form .btn { margin-top: 1.75rem; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin: 1rem 0 0; font-size: .8rem; min-height: 1em; }
.form-status.ok { color: var(--accent); }
.form-status.error { color: var(--danger); }
.form input:user-invalid, .form select:user-invalid { border-color: var(--danger); }

/* Closing navigation */
.site-footer { background: #191919; padding: 4rem 0; font-size: .8rem; }
.footer-inner { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 4rem; align-items: start; }
.footer-inner > * { min-width: 0; }
.footer-inner img { width: 144px; height: auto; margin-bottom: 1.5rem; }
.footer-inner nav { display: grid; gap: .65rem; }
.footer-inner nav a { color: var(--muted); }
.footer-inner nav a:hover { color: var(--text); }
.footer-inner p { max-width: 42ch; }
.reveal { opacity: 0; transform: translateY(12px); transition: opacity .4s ease, transform .4s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* Responsive composition */
@media (max-width: 1280px) {
  .header-ctas .btn-ghost { display: none; }
  .main-nav { gap: 1.2rem; }
  .header-ctas .btn { font-size: .75rem; }
  .split, .support, .contact-grid { gap: 3rem; }
  .price-card { padding: 2rem 1.5rem; }
}
@media (max-width: 1024px) {
  :root { --header-h: 76px; }
  .container, .container.narrow { width: calc(100% - 4rem); }
  .main-nav, .header-ctas { display: none; }
  .nav-toggle { display: block; }
  .site-header.nav-open .main-nav { display: flex; flex-direction: column; gap: 0; position: absolute; top: var(--header-h); left: 0; right: 0; padding: 1rem 2rem 2rem; background: var(--bg); border-bottom: 1px solid var(--border-strong); max-height: calc(100dvh - var(--header-h)); overflow-y: auto; }
  .site-header.nav-open .main-nav > a { padding: .8rem 0; border-bottom: 1px solid var(--border); font-size: .95rem; }
  .site-header.nav-open .nav-ctas-mobile { display: grid; gap: .75rem; margin-top: 1.5rem; }
  .site-header.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .site-header.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  .site-header.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero-grid { gap: 2rem; }
  .hero h1 { font-size: clamp(2.75rem, 5.5vw, 3.75rem); }
  .hero-visual { aspect-ratio: 1 / 1.2; }
  .section-head { grid-template-columns: 1fr 2.5fr; gap: 0 2rem; }
  .split { grid-template-columns: 1.2fr 1fr; gap: 2rem; }
  .panel-grid, .support, .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .section-head.left h2, .contact-copy h2 { max-width: 26ch; }
  .timeline, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2.5rem; }
  .phones-row { grid-template-columns: repeat(5, 160px); overflow-x: auto; padding-bottom: 1.5rem; scroll-snap-type: x mandatory; }
  .phones-row > * { scroll-snap-align: start; }
  .coverage-grid { gap: 2rem; }
  .price-card { padding: 2rem 1.25rem; }
  .price-card h3 { font-size: 1.05rem; }
  .price-label { font-size: .6rem; }
  .footer-inner { gap: 2rem; }
}
@media (max-width: 720px) {
  .container, .container.narrow { width: calc(100% - 2.5rem); }
  .brand img { width: 128px; }
  .hero { padding-top: 3.5rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 3rem; padding-bottom: 3rem; }
  .hero h1 { font-size: clamp(2.65rem, 8.5vw, 3.75rem); max-width: 17ch; }
  .eyebrow { font-size: .62rem; margin-bottom: 1.75rem; }
  .hero-visual { width: min(100%, 480px); margin-inline: auto; aspect-ratio: 1 / 1.05; }
  .hero-ctas .btn { flex: 1 1 180px; }
  .trust-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
  .trust-inner > span { font-size: .65rem; align-items: flex-start; }
  .section-head { display: block; margin-bottom: 2.5rem; }
  .section-head .kicker { margin-bottom: 1.5rem; }
  .section-head h2 { font-size: clamp(2rem, 6.5vw, 2.75rem); }
  .split, .coverage-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .tabs { margin-bottom: 2rem; }
  .tabs [role="tab"] { padding: 1rem .5rem 1rem 0; }
  .tabs [role="tab"] strong { font-size: .75rem; }
  .tabs [role="tab"] span { font-size: .57rem; }
  .pricing-grid { grid-template-columns: 1fr; }
  .price-card { padding: 2.5rem 1.25rem; border-right: 0; border-bottom: 1px solid var(--border); }
  .price-card:last-child { border-bottom: 0; }
  .price-card h3 { font-size: 1.3rem; }
  .price-label { font-size: .7rem; }
  .price-amount strong { font-size: 4rem; }
  .price-card .check-list { margin-top: 0; }
  .cta-banner { align-items: flex-start; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-inner > :first-child { grid-column: 1 / -1; }
  .form { padding: 1.5rem; }
}
@media (max-width: 480px) {
  .timeline, .grid-4 { grid-template-columns: 1fr; gap: 2rem; }
  .step-num { margin-bottom: 1.5rem; font-size: 2rem; }
  .timeline h3 { max-width: none; }
  .tabs { grid-template-columns: 1fr; }
  .tabs [role="tab"] { padding: 1rem 0; border-top: 1px solid var(--border); }
  .tabs [role="tab"] strong { font-size: .9rem; }
  .tabs [role="tab"] span { font-size: .65rem; }
  .tabs [role="tab"][aria-selected="true"]::after { left: auto; top: 1rem; bottom: 1rem; width: 2px; height: auto; }
  .vehicle-models { gap: 0 1rem; }
  .vehicle-models li { font-size: .83rem; }
  .field-row { grid-template-columns: minmax(0, 1fr); }
  .form > .field-row:first-child .field + .field { margin-top: 1.25rem; }
  .form { padding: 1.25rem; }
  .footer-inner { grid-template-columns: 1fr; }
  .cta-banner .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}