@font-face { font-family: "Lato"; src: url("../fonts/lato-regular.d636e4683231.ttf") format("truetype"); font-style: normal; font-weight: 400; font-display: swap; }
@font-face { font-family: "Lato"; src: url("../fonts/lato-bold.8a0aace75d33.ttf") format("truetype"); font-style: normal; font-weight: 700; font-display: swap; }
@font-face { font-family: "Lato"; src: url("../fonts/lato-black.808c62839c62.ttf") format("truetype"); font-style: normal; font-weight: 900; font-display: swap; }
@font-face { font-family: "Cormorant Garamond"; src: url("../fonts/cormorant-garamond-semibold.4fcd2d97820d.ttf") format("truetype"); font-style: normal; font-weight: 600; font-display: swap; }
@font-face { font-family: "Cormorant Garamond"; src: url("../fonts/cormorant-garamond-semibold-italic.15a0b1826806.ttf") format("truetype"); font-style: italic; font-weight: 600; font-display: swap; }

:root {
  --rice-blue: #00205b;
  --rich-blue: #0a509e;
  --medium-blue: #4d9ad4;
  --light-blue-gray: #adc7dc;
  --pale-blue: #e8f1f7;
  --ink: #172332;
  --slate: #526173;
  --warm-paper: #f7f3ea;
  --near-white: #fffdfc;
  --accent-yellow: #f4c44e;
  --line: rgba(23,35,50,.14);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--near-white); color: var(--ink); font: 16px/1.6 "Avenir Next", "Lato", Arial, sans-serif; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 100; padding: 10px 14px; background: white; color: var(--ink); }
.skip-link:focus { top: 16px; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent-yellow); outline-offset: 4px; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 20; height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 0 max(32px, calc((100vw - var(--max))/2)); border-bottom: 1px solid rgba(255,255,255,.13); background: rgba(3,11,29,.72); color: white; box-shadow: 0 8px 26px rgba(0,0,0,.16); backdrop-filter: blur(14px); transition: transform .26s ease, background-color .26s ease; will-change: transform; }
.site-header.is-hidden { transform: translateY(calc(-100% - 2px)); }
.brand { display: flex; align-items: center; gap: 14px; text-decoration: none; }
.brand img { width: 64px; filter: brightness(0) invert(1); }
.brand span { font-size: .68rem; line-height: 1.2; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.desktop-nav { display: flex; align-items: center; gap: 8px; }
.desktop-nav a, .mobile-menu a { position: relative; color: rgba(255,255,255,.8); text-decoration: none; font-size: .73rem; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; white-space: nowrap; padding: 10px 12px; border-radius: 7px; }
.desktop-nav a:hover, .mobile-menu a:hover { color: white; background: rgba(255,255,255,.09); }
.desktop-nav a[aria-current="page"], .mobile-menu a[aria-current="page"] { color: #071a3c; background: var(--medium-blue); }
.desktop-nav .contact-link, .mobile-menu .contact-link { --contact-radius: 7px; --current-ring: 4px; color: var(--ink); background: var(--accent-yellow); border-radius: var(--contact-radius); }
.desktop-nav .contact-link:hover, .mobile-menu .contact-link:hover { color: var(--ink); background: #ffd66b; }
.desktop-nav .contact-link[aria-current="page"], .mobile-menu .contact-link[aria-current="page"] { color: var(--ink); background: var(--accent-yellow); }
.desktop-nav .contact-link[aria-current="page"]:after, .mobile-menu .contact-link[aria-current="page"]:after { content: ""; position: absolute; inset: calc(-1 * var(--current-ring)); border: var(--current-ring) solid var(--medium-blue); border-radius: calc(var(--contact-radius) + var(--current-ring)); pointer-events: none; }
.mobile-nav { display: none; }
.mobile-nav summary { min-width: 104px; min-height: 46px; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 10px 14px; color: var(--ink); background: var(--accent-yellow); border-radius: 7px; cursor: pointer; font-size: .76rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; list-style: none; }
.mobile-nav summary::-webkit-details-marker { display: none; }
.menu-icon, .menu-icon:before, .menu-icon:after { display: block; width: 20px; height: 2px; background: currentColor; transition: transform .2s ease; }
.menu-icon { position: relative; }
.menu-icon:before, .menu-icon:after { content: ""; position: absolute; left: 0; }
.menu-icon:before { top: -6px; }
.menu-icon:after { top: 6px; }
.mobile-nav[open] .menu-icon { background: transparent; }
.mobile-nav[open] .menu-icon:before { top: 0; transform: rotate(45deg); }
.mobile-nav[open] .menu-icon:after { top: 0; transform: rotate(-45deg); }
.mobile-menu { position: absolute; top: calc(100% + 1px); right: 16px; left: 16px; display: grid; gap: 7px; padding: 14px; background: #071a3c; border: 1px solid rgba(255,255,255,.18); border-radius: 0 0 12px 12px; box-shadow: 0 24px 45px rgba(0,0,0,.35); }
.mobile-menu a { display: block; font-size: .82rem; }

.hero { position: relative; min-height: 165svh; color: white; background: #030b1d; }
.hero:after { content: ""; position: absolute; inset: 92px 0 auto; z-index: 4; height: 1px; background: linear-gradient(90deg, transparent, var(--medium-blue), transparent); opacity: .55; }
.hero-sticky { position: sticky; top: 0; min-height: 100svh; overflow: hidden; padding: 132px max(32px, calc((100vw - var(--max))/2)) 30px; display: grid; align-content: center; gap: 20px; background: #030b1d; }
.hero-sunrise { position: absolute; inset: 0; pointer-events: none; }
.hero-light { --flare-x: -18vw; --flare-y: 28vh; position: absolute; inset: -25%; background: radial-gradient(circle at center, #173f79 0, #071a3c 35%, #030b1d 78%); transform: translate3d(var(--flare-x), var(--flare-y), 0); will-change: transform; }
.hero-grid { position: relative; z-index: 2; isolation: isolate; display: grid; grid-template-columns: .78fr 1.22fr; align-items: center; gap: 20px; }
.hero-glow { position: absolute; z-index: 0; width: clamp(300px, 35vw, 500px); height: clamp(300px, 35vw, 500px); border: 1px solid rgba(77,154,212,.24); border-radius: 50%; left: 50%; top: 50%; box-shadow: 0 0 100px rgba(77,154,212,.14), inset 0 0 100px rgba(77,154,212,.08); transform: translate(-50%, -50%); pointer-events: none; }
.hero-glow:before, .hero-glow:after { content: ""; position: absolute; inset: 14%; border: 1px solid rgba(77,154,212,.14); border-radius: 50%; }
.hero-glow:after { inset: 31%; }
.hero-copy { position: relative; z-index: 3; max-width: 570px; }
.kicker, .section-label { margin: 0 0 18px; color: var(--medium-blue); line-height: 1.35; font-weight: 900; text-transform: uppercase; }
.kicker { font-size: .82rem; letter-spacing: .15em; }
.section-label { font-size: .92rem; letter-spacing: .13em; }
.home-section .section-label, .faq-preview .section-label, .partner-section .section-label { color: var(--rich-blue); }
.hero h1 { margin: 0 0 26px; font-size: clamp(3.7rem, 5.4vw, 5.2rem); line-height: .88; letter-spacing: -.065em; font-weight: 900; }
.hero h1 .hero-title-line, .hero h1 em { display: block; }
.hero h1 .hero-title-line { white-space: nowrap; }
.hero h1 em { color: var(--light-blue-gray); font-family: Georgia, "Cormorant Garamond", serif; font-weight: 700; }
.hero-lead { max-width: 560px; color: rgba(255,255,255,.72); font-size: 1.2rem; line-height: 1.65; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 12px 20px; border: 1px solid transparent; border-radius: 3px; text-decoration: none; font-size: .75rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.button-accent { background: var(--accent-yellow); color: var(--ink); }
.button-ghost { border-color: rgba(255,255,255,.35); color: white; }
.button-light { background: white; color: var(--rice-blue); }
.button-blue { background: var(--rich-blue); color: white; }

.car-stage { position: relative; z-index: 2; min-width: 0; }
.car-viewer { position: relative; z-index: 1; width: 100%; height: clamp(330px, 43vw, 500px); overflow: visible; cursor: grab; touch-action: none; outline: none; }
.car-viewer:focus-visible { outline: 3px solid var(--accent-yellow); outline-offset: 5px; }
.car-viewer.is-interacting { cursor: grabbing; }
.car-viewer-canvas, .car-viewer-fallback { position: absolute; z-index: 1; inset: 0; width: 100%; height: 100%; }
.car-viewer-canvas { display: block; opacity: 0; transition: opacity .45s ease; }
.car-viewer-fallback { object-fit: contain; filter: drop-shadow(0 40px 34px rgba(0,0,0,.58)); transition: opacity .45s ease, visibility .45s ease; }
.car-viewer.is-ready .car-viewer-canvas { opacity: 1; }
.car-viewer.is-ready .car-viewer-fallback { opacity: 0; visibility: hidden; }
.car-viewer-status { position: absolute; left: 50%; bottom: 14px; z-index: 3; transform: translateX(-50%); margin: 0; padding: 7px 11px; border: 1px solid rgba(255,255,255,.18); background: rgba(3,11,29,.82); color: var(--light-blue-gray); font-size: .75rem; white-space: nowrap; }
.car-viewer-status[hidden] { display: none; }
.interaction-hint { margin: 4px 0 0; color: rgba(255,255,255,.55); font-size: .76rem; letter-spacing: .08em; text-align: right; text-transform: uppercase; }
.hero-specs { position: relative; z-index: 2; display: grid; grid-template-columns: .65fr 1.35fr; align-items: start; gap: 34px; padding-top: 8px; }
.specs-heading .section-label { margin-bottom: 8px; }
.specs-heading h2 { margin: 0; font-size: clamp(1.8rem, 3vw, 2.8rem); letter-spacing: -.035em; }
.spec-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.spec-grid article { min-height: 136px; padding: 14px 20px 16px; }
.spec-glyph { width: 27px; height: 27px; display: block; margin-bottom: 10px; color: var(--light-blue-gray); fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.spec-glyph--solid { fill: currentColor; stroke: none; }
.spec-grid strong { display: block; color: var(--accent-yellow); font-size: clamp(1.45rem, 2.2vw, 2.1rem); line-height: 1; letter-spacing: -.035em; }
.spec-grid strong span { font-size: .65em; letter-spacing: 0; }
.spec-grid p { margin: 12px 0 0; color: rgba(255,255,255,.74); font-size: .82rem; line-height: 1.3; }

.story-section, .team-teaser, .sponsor-preview, .faq-preview, .updates { width: min(calc(100% - 64px), var(--max)); margin-inline: auto; padding: 118px 0; }
.story-section, .team-teaser { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; align-items: center; }
h2 { margin: 0 0 25px; font-size: clamp(2.35rem, 4vw, 4.35rem); line-height: .98; letter-spacing: -.055em; }
.large-copy { font-size: clamp(1.25rem, 2vw, 1.62rem); line-height: 1.5; color: var(--slate); }
.story-copy > p:not(.section-label), .team-teaser > div > p:not(.section-label), .sponsor-preview > div > p { max-width: 620px; }
.text-link { display: inline-flex; gap: 10px; margin-top: 16px; color: var(--rich-blue); font-weight: 900; text-decoration: none; }
.editorial-image { margin: 0; position: relative; }
.editorial-image:before { content: ""; position: absolute; left: -18px; top: -18px; width: 44%; height: 2px; background: var(--medium-blue); }
.editorial-image img { aspect-ratio: 4 / 3; width: 100%; object-fit: cover; }
.editorial-image figcaption { padding: 13px 0; color: var(--slate); font-size: .78rem; }
.editorial-image figcaption b { color: var(--rich-blue); text-transform: uppercase; letter-spacing: .1em; }

.home-section, .partner-section { width: min(calc(100% - 64px), var(--max)); margin-inline: auto; padding: 118px 0; border-top: 1px solid var(--line); }
.who-section { display: grid; grid-template-columns: .9fr 1.1fr; column-gap: 90px; row-gap: 42px; align-items: center; }
.who-photo-grid { position: relative; display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); grid-template-rows: repeat(2, clamp(150px, 16vw, 215px)); gap: 14px; min-width: 0; }
.who-photo-grid:before { content: ""; position: absolute; z-index: 2; left: -18px; top: -18px; width: 44%; height: 2px; background: var(--medium-blue); }
.who-photo-grid img { width: 100%; height: 100%; object-fit: cover; }
.who-photo-grid img:nth-child(1) { grid-column: 1 / 8; grid-row: 1; }
.who-photo-grid img:nth-child(2) { grid-column: 8 / 13; grid-row: 1; }
.who-photo-grid img:nth-child(3) { grid-column: 1 / 6; grid-row: 2; }
.who-photo-grid img:nth-child(4) { grid-column: 6 / 13; grid-row: 2; }
.who-photo--electrical-team { object-position: center 58%; }
.who-photo--mechanical-action { object-position: center 54%; }
.who-photo--electrical-action { object-position: 58% center; }
.social-links { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 26px; }
.social-link { display: inline-flex; align-items: center; gap: 9px; color: var(--rich-blue); text-decoration: none; font-size: .82rem; font-weight: 800; letter-spacing: .035em; }
.social-link img { width: 23px; height: 23px; flex: 0 0 auto; transition: transform .2s ease; }
.social-link:hover img { transform: translateY(-2px); }
.who-socials { grid-column: 1 / -1; padding-top: 30px; border-top: 1px solid var(--line); }
.section-copy > p:not(.section-label) { max-width: 620px; }
.who-detail { color: var(--slate); font-size: clamp(.96rem, 1.15vw, 1.08rem); line-height: 1.7; }
.section-copy .button { margin-top: 20px; }
.challenge-section { display: grid; gap: 46px; }
.challenge-heading { max-width: 720px; }
.challenge-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.challenge-card { min-height: 320px; display: grid; grid-template-rows: 116px auto; gap: 30px; padding: 40px; border: 1px solid var(--line); background: var(--warm-paper); }
.challenge-card img { width: 100%; height: 116px; object-fit: contain; object-position: left center; }
.challenge-card p { align-self: end; margin: 0; color: #172332; font-size: 1.03rem; line-height: 1.65; }
.track-feature { position: relative; margin: 8px 0 0; overflow: hidden; background: var(--rice-blue); }
.track-feature img { width: 100%; aspect-ratio: 16 / 7; object-fit: cover; }
.track-feature:after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(180deg, transparent 55%, rgba(2,12,30,.76)); }
.track-feature figcaption { position: absolute; z-index: 2; right: 28px; bottom: 24px; left: 28px; display: flex; justify-content: space-between; gap: 20px; color: white; }
.track-feature figcaption strong { text-transform: uppercase; letter-spacing: .12em; }
.track-feature figcaption span { color: rgba(255,255,255,.76); font-size: .82rem; }
.challenge-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-self: start; }

.photo-window { min-height: 680px; display: flex; align-items: center; padding: 90px max(32px, calc((100vw - var(--max))/2)); color: white; background: linear-gradient(90deg, rgba(2,12,30,.92), rgba(2,12,30,.25)), url("../img/site/team-electrical.e76213eae297.webp") center/cover fixed; }
.window-panel { width: min(620px, 100%); padding: 56px; background: rgba(0,32,91,.9); border-left: 4px solid var(--medium-blue); box-shadow: 0 30px 80px rgba(0,0,0,.28); }
.window-panel h2 { font-size: clamp(2.7rem, 4.5vw, 4.7rem); }
.window-panel p:not(.section-label) { color: rgba(255,255,255,.72); font-size: 1.08rem; }

.team-teaser figure { margin: 0; }
.team-teaser figure img { min-height: 560px; object-fit: cover; }

.updates { border-top: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: 1.4fr .6fr; gap: 60px; align-items: end; margin-bottom: 46px; }
.section-heading h2 { margin-bottom: 0; }
.section-heading > p { color: var(--slate); }
.updates-grid { display: grid; grid-template-columns: 1.5fr .75fr .75fr; gap: 18px; }
.update-card { min-height: 360px; display: flex; flex-direction: column; justify-content: end; background: var(--pale-blue); border: 1px solid var(--line); }
.update-featured { display: grid; grid-template-rows: 230px auto; }
.update-image { background: url("../img/site/team-electrical.e76213eae297.webp") center/cover; }
.update-copy { padding: 28px; }
.update-meta { margin: 0 0 15px; color: var(--rich-blue); font-size: .68rem; font-weight: 900; text-transform: uppercase; letter-spacing: .13em; }
.update-card h3 { margin: 0 0 12px; font-size: 1.45rem; line-height: 1.15; }
.update-card p { color: var(--slate); }
.update-card a { color: var(--rich-blue); font-weight: 800; text-decoration: none; }

.sponsor-preview { display: grid; grid-template-columns: 1.15fr .85fr; gap: 90px; align-items: center; }
.fundraising-placeholder { margin-top: 40px; }
.progress-label { display: flex; justify-content: space-between; gap: 20px; margin-bottom: 10px; font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; }
.progress-label strong { color: var(--rich-blue); }
.progress-track { height: 9px; background: var(--pale-blue); overflow: hidden; }
.progress-track span { display: block; width: 18%; height: 100%; background: repeating-linear-gradient(90deg, var(--medium-blue) 0 7px, transparent 7px 12px); opacity: .5; }
.packet-card { padding: 48px; background: var(--rice-blue); color: white; }
.packet-mark { display: inline-block; padding: 5px 8px; border: 1px solid var(--medium-blue); color: var(--light-blue-gray); font-size: .65rem; font-weight: 900; letter-spacing: .14em; }
.packet-card p { margin-top: 34px; color: var(--light-blue-gray); text-transform: uppercase; font-size: .68rem; letter-spacing: .14em; }
.packet-card h3 { margin: 0 0 30px; font: 600 2.4rem/1.05 "Cormorant Garamond", Georgia, serif; }

.faq-preview { border-top: 1px solid var(--line); }
.faq-list { margin-top: 46px; border-top: 1px solid var(--line); }
.faq-list details { padding: 24px 0; border-bottom: 1px solid var(--line); }
.faq-list summary { cursor: pointer; font-size: 1.15rem; font-weight: 900; }
.faq-list p { max-width: 760px; color: var(--slate); }
.faq-group { display: grid; grid-template-columns: minmax(0, .65fr) minmax(0, 1.6fr); gap: 64px; margin-top: 60px; scroll-margin-top: 112px; }
.faq-group-heading h3 { margin: 0 0 12px; font-size: 1.7rem; font-weight: 900; letter-spacing: -.035em; }
.faq-group-heading a { display: inline-block; color: var(--rich-blue); font-size: .86rem; font-weight: 800; text-decoration: none; padding-block: 8px; }
.faq-group-heading a:hover { text-decoration: underline; text-underline-offset: 4px; }
.faq-group .faq-list { margin-top: 0; min-width: 0; }
.faq-group .faq-list summary { line-height: 1.45; }
.faq-group .faq-list p { margin: 18px 0 0; }
.faq-group .faq-list a { color: var(--rich-blue); text-underline-offset: 3px; }
@media (max-width: 860px) {
  .faq-group { grid-template-columns: 1fr; gap: 20px; margin-top: 44px; }
  .faq-group .faq-list summary { font-size: 1rem; }
}

.partner-section { display: grid; gap: 54px; overflow: hidden; }
.partner-heading { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 40px; }
.partner-heading h2 { max-width: 850px; margin-bottom: 0; }
.sponsor-marquee { position: relative; width: 100%; overflow: hidden; padding: 30px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
/* Five partner slots in 40s preserve the previous four-slot homepage travel speed (32s). */
.sponsor-track { width: max-content; display: flex; animation: sponsor-scroll 40s linear infinite; animation-play-state: paused; }
.sponsor-marquee.is-visible .sponsor-track { animation-play-state: running; }
.sponsor-marquee:hover .sponsor-track, .sponsor-marquee:focus-within .sponsor-track { animation-play-state: paused; }
.sponsor-group { display: flex; align-items: center; gap: 76px; padding-right: 76px; }
.sponsor-group img { width: 230px; height: 96px; object-fit: contain; filter: grayscale(calc(1 - var(--sponsor-color, 0))); opacity: calc(.67 + .33 * var(--sponsor-color, 0)); transition: filter .2s ease, opacity .2s ease; }
.sponsor-group img:hover { filter: grayscale(0); opacity: 1; }
.sponsor-name { display: flex; align-items: center; justify-content: center; flex: 0 0 auto; width: 230px; height: 96px; font-size: 1.5rem; font-weight: 700; white-space: nowrap; color: var(--rich-blue); filter: grayscale(calc(1 - var(--sponsor-color, 0))); opacity: calc(.67 + .33 * var(--sponsor-color, 0)); transition: filter .2s ease, opacity .2s ease; }
.sponsor-name:hover { filter: grayscale(0); opacity: 1; }
.sponsor-marquee:focus-visible { outline: 3px solid var(--medium-blue); outline-offset: 5px; }
@keyframes sponsor-scroll { to { transform: translateX(-50%); } }

footer { min-height: 340px; padding: 76px max(32px, calc((100vw - var(--max))/2)) 35px; color: white; background: var(--rice-blue); display: grid; grid-template-columns: 1.5fr .5fr; gap: 60px 80px; align-items: start; }
footer .section-label { color: var(--light-blue-gray); }
footer h2 { max-width: 700px; }
footer > div > p { max-width: 560px; color: var(--light-blue-gray); }
.footer-brand { margin-bottom: 20px; }
.contact-email { font-size: clamp(1.3rem, 2vw, 2rem); color: var(--light-blue-gray); text-decoration: none; }
.footer-links { display: grid; gap: 14px; padding-top: 50px; }
.footer-links a { color: white; text-decoration: none; font-weight: 800; }
footer .social-links { grid-column: 1 / -1; padding-top: 28px; border-top: 1px solid rgba(255,255,255,.18); }
footer .social-link { color: white; }
footer .social-link img { filter: brightness(0) invert(1); }
.prototype-note { grid-column: 1 / -1; align-self: end; margin: 80px 0 0; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.18); color: rgba(255,255,255,.52); font-size: .72rem; text-transform: uppercase; letter-spacing: .12em; }

@media (min-width: 761px) {
  .car-viewer {
    --car-canvas-overflow: clamp(90px, 10vw, 180px);
    left: calc(-1 * var(--car-canvas-overflow));
    width: calc(100% + var(--car-canvas-overflow) + var(--car-canvas-overflow));
  }
  .who-socials { gap: 18px 34px; }
  .who-socials .social-link { gap: 11px; font-size: 1rem; }
  .who-socials .social-link img { width: 30px; height: 30px; }
}

@media (max-width: 1000px) {
  .desktop-nav { gap: 2px; }
  .desktop-nav a { padding-inline: 9px; font-size: .65rem; }
  .hero-sticky { padding-top: 132px; align-content: start; }
  .hero-grid { grid-template-columns: .9fr 1.1fr; }
  .hero-copy { max-width: 760px; }
  .hero h1 { font-size: clamp(3.1rem, 6vw, 4.25rem); }
  .car-viewer { height: 390px; }
  .hero-specs { grid-template-columns: 1fr; gap: 18px; }
  .story-section, .team-teaser, .sponsor-preview, .who-section { gap: 50px; }
  .updates-grid { grid-template-columns: 1fr 1fr; }
  .update-featured { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .site-header { height: auto; min-height: 82px; padding: 17px 20px; background: rgba(3,11,29,.76); box-shadow: 0 8px 24px rgba(0,0,0,.18); backdrop-filter: blur(14px); }
  .brand span { display: none; }
  .desktop-nav { display: none; }
  .mobile-nav { display: block; }
  .hero { min-height: auto; }
  .hero-sticky { position: relative; min-height: 0; overflow: hidden; padding: 126px 20px 34px; }
  .hero-grid { grid-template-columns: 1fr; gap: 20px; }
  .hero h1 { font-size: clamp(3.45rem, 17vw, 5.1rem); }
  .hero h1 .hero-title-line { white-space: normal; }
  .hero-lead { font-size: 1.06rem; }
  .car-viewer { height: 330px; margin-top: 4px; }
  .interaction-hint { text-align: left; font-size: .68rem; }
  .spec-grid { grid-template-columns: 1fr 1fr; }
  .spec-grid article { min-height: 104px; }
  .story-section, .team-teaser, .sponsor-preview, .section-heading, .who-section, .challenge-grid, .partner-heading { grid-template-columns: 1fr; }
  .story-section, .team-teaser, .sponsor-preview, .faq-preview, .updates, .home-section, .partner-section { width: min(calc(100% - 36px), var(--max)); padding: 78px 0; }
  .challenge-card { min-height: 0; padding: 28px 24px; }
  .track-feature img { aspect-ratio: 4 / 3; }
  .track-feature figcaption { right: 18px; bottom: 16px; left: 18px; display: grid; gap: 2px; }
  .partner-heading { align-items: start; }
  .partner-heading .button { justify-self: start; }
  .sponsor-marquee { margin-inline: -18px; width: calc(100% + 36px); mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent); }
  .sponsor-group { gap: 40px; padding-right: 40px; }
  .sponsor-group img { width: 185px; height: 80px; }
  .sponsor-name { width: 185px; height: 80px; font-size: 1.25rem; }
  .team-teaser figure { order: 2; }
  .photo-window { min-height: 590px; padding: 55px 18px; background-attachment: scroll; }
  .window-panel { padding: 32px 24px; }
  .updates-grid { grid-template-columns: 1fr; }
  .update-featured { grid-column: auto; }
  footer { grid-template-columns: 1fr; padding: 75px 20px 30px; }
  .footer-links { padding-top: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .site-header { transition: none; }
  .hero-light { --flare-x: 0vw; --flare-y: 0vh; }
  .car-viewer-canvas, .car-viewer-fallback { transition: none; }
  .sponsor-marquee { overflow-x: auto; mask-image: none; }
  .sponsor-track { animation: none; }
  .sponsor-group[aria-hidden="true"] { display: none; }
}