:root {
  --bg: #080b0f;
  --panel: #10151b;
  --panel-2: #171d24;
  --ink: #f4f7f8;
  --muted: #9aa5af;
  --line: rgba(255,255,255,.12);
  --acid: #d8ff3e;
  --ice: #aee8ff;
  --max: 1240px;
  --radius: 22px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.skip-link { position: fixed; z-index: 100; left: 1rem; top: -5rem; background: var(--acid); color: #080b0f; padding: .7rem 1rem; border-radius: 8px; font-weight: 800; }
.skip-link:focus { top: 1rem; }

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  width: 100%;
  height: 92px;
  padding: 0 max(24px, calc((100vw - var(--max))/2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,.16);
  background: rgba(5,7,9,.92);
  box-shadow: 0 12px 34px rgba(0,0,0,.24);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand-logo { display: block; width: clamp(190px, 18vw, 250px); height: auto; }
.main-nav { display: flex; align-items: center; gap: 2rem; font-size: .9rem; font-weight: 650; }
.main-nav a { color: #cbd2d8; transition: color .2s ease; }
.main-nav a:hover { color: #fff; }
.main-nav .nav-cta { border: 1px solid rgba(255,255,255,.45); border-radius: 999px; color: #fff; padding: .55rem 1rem; }
.menu-button { display: none; background: transparent; border: 1px solid var(--line); border-radius: 999px; padding: .45rem .85rem; }

.hero {
  position: relative;
  min-height: 820px;
  padding: 150px max(24px, calc((100vw - var(--max))/2)) 70px;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  background:
    radial-gradient(circle at 77% 42%, rgba(174,232,255,.13), transparent 25%),
    radial-gradient(circle at 15% 25%, rgba(216,255,62,.06), transparent 30%),
    linear-gradient(135deg, #0d1116 0%, #050709 72%);
  overflow: hidden;
}
.hero-grid { position: absolute; inset: 0; opacity: .18; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to bottom, #000, transparent 88%); }
.hero::after { content: "6061"; position: absolute; right: -2vw; bottom: -13vw; font-size: clamp(15rem, 32vw, 36rem); line-height: .8; font-weight: 900; letter-spacing: -.1em; color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.06); pointer-events: none; }
.hero-copy { position: relative; z-index: 3; max-width: 820px; padding-bottom: 54px; }
.eyebrow { margin: 0 0 1.4rem; color: #b7c1c9; font-size: .76rem; letter-spacing: .18em; font-weight: 750; text-transform: uppercase; display: flex; align-items: center; gap: .7rem; }
.eyebrow span { width: 34px; height: 2px; background: var(--acid); }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 1.5rem; font-size: clamp(3rem, 5.8vw, 6.15rem); line-height: .96; letter-spacing: -.055em; font-weight: 850; }
h1 em { font-style: normal; color: var(--acid); }
.hero-kicker { max-width: 680px; margin: 0 0 .9rem; color: var(--ice); font-size: .76rem; font-weight: 800; letter-spacing: .12em; line-height: 1.7; }
.hero-lead { max-width: 590px; color: #b7c1c9; font-size: 1.04rem; line-height: 1.8; }
.hero-actions { display: flex; align-items: center; gap: 1.5rem; margin-top: 2rem; }
.button { border: 0; border-radius: 999px; min-height: 48px; padding: .75rem 1.25rem; display: inline-flex; align-items: center; justify-content: center; font-weight: 800; cursor: pointer; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--acid); color: #090c0e; }
.button.secondary { background: #eef2f4; color: #0b0e11; }
.text-link { font-size: .92rem; color: #dce3e7; border-bottom: 1px solid rgba(255,255,255,.35); padding-bottom: .15rem; }
.hero-stats { margin: 3rem 0 0; display: flex; gap: 1.8rem; }
.hero-stats div { min-width: 95px; padding-left: 1rem; border-left: 1px solid var(--line); }
.hero-stats dt { font-size: 1.3rem; font-weight: 800; color: #fff; }
.hero-stats dd { margin: 0; font-size: .76rem; color: var(--muted); }
.finder-card { position: absolute; z-index: 6; left: 50%; bottom: 0; transform: translate(-50%, 50%); width: min(calc(100% - 48px), 920px); background: #f3f6f7; color: #0a0d10; border-radius: 18px; padding: 1rem 1rem 1rem 1.35rem; display: flex; align-items: center; gap: 1rem; box-shadow: 0 20px 50px rgba(0,0,0,.3); }
.finder-card > label { font-size: .82rem; font-weight: 850; white-space: nowrap; }
.finder-field { flex: 1; display: flex; align-items: center; background: #fff; border: 1px solid #dce2e5; border-radius: 12px; min-height: 52px; overflow: hidden; }
.finder-field svg, .search-box svg { width: 20px; margin-left: 1rem; fill: none; stroke: currentColor; stroke-width: 2; color: #56616b; }
.finder-field input { min-width: 0; flex: 1; color: #0a0d10; background: transparent; border: 0; padding: .8rem; outline: none; }
.finder-field button { align-self: stretch; border: 0; background: #10151b; color: #fff; padding: 0 1.2rem; font-weight: 750; cursor: pointer; }

.section { width: min(calc(100% - 48px), var(--max)); margin: 0 auto; }
.catalog { padding-top: 130px; padding-bottom: 120px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 3rem; margin-bottom: 2.3rem; }
.section-heading h2, .features h2, .technical-specs h2, .tech-copy h3, .fitment h2, .contact h2 { margin-bottom: 0; font-size: clamp(2.25rem, 4.3vw, 4.7rem); letter-spacing: -.045em; line-height: 1.05; }
.section-heading > p { max-width: 440px; color: var(--muted); margin-bottom: .4rem; }
.catalog-toolbar { display: grid; grid-template-columns: minmax(270px, 1fr) auto auto; gap: 1rem; align-items: center; padding: .85rem; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.025); }
.search-box { min-height: 48px; display: flex; align-items: center; border-radius: 12px; background: #171d24; }
.search-box input { width: 100%; padding: .75rem 1rem; border: 0; outline: 0; background: transparent; color: #fff; }
.filters { display: flex; gap: .35rem; }
.filter { border: 0; color: #b7c1c9; background: transparent; border-radius: 999px; padding: .65rem .9rem; cursor: pointer; font-weight: 750; font-size: .88rem; }
.filter.is-active { color: #080b0f; background: var(--acid); }
.select-wrap select { min-height: 44px; color: #eaf0f3; background: #171d24; border: 1px solid var(--line); border-radius: 10px; padding: .55rem 2rem .55rem .8rem; }
.results-line { min-height: 56px; display: flex; align-items: center; justify-content: space-between; color: var(--muted); font-size: .88rem; }
.results-line p { margin: 0; }
.results-line b { color: #fff; }
.results-line button { background: none; border: 0; color: #aeb8c0; text-decoration: underline; cursor: pointer; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.product-card { position: relative; min-width: 0; overflow: hidden; border-radius: var(--radius); background: var(--panel); border: 1px solid rgba(255,255,255,.09); transition: transform .3s ease, border-color .3s ease; }
.product-card:hover { transform: translateY(-5px); border-color: rgba(216,255,62,.38); }
.product-image { position: relative; aspect-ratio: 1.15; overflow: hidden; background: radial-gradient(circle at 50% 45%, #2a333c, #0b0e12 68%); }
.product-image::after { content: ""; position: absolute; inset: auto 8% 5% 8%; height: 16%; background: rgba(0,0,0,.55); filter: blur(18px); border-radius: 50%; }
.product-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.product-card:hover .product-image img { transform: scale(1.04); }
.series-badge { position: absolute; z-index: 2; top: 1rem; left: 1rem; color: #0a0d10; background: var(--acid); border-radius: 999px; padding: .25rem .55rem; font-size: .68rem; font-weight: 900; letter-spacing: .08em; }
.compare-toggle { position: absolute; z-index: 3; top: 1rem; right: 1rem; display: flex; align-items: center; gap: .35rem; background: rgba(5,7,9,.78); border: 1px solid rgba(255,255,255,.18); border-radius: 999px; padding: .38rem .65rem; font-size: .72rem; cursor: pointer; }
.compare-toggle input { accent-color: var(--acid); }
.product-info { padding: 1.2rem 1.2rem 1.35rem; }
.product-info h3 { margin-bottom: .2rem; font-size: 1.3rem; line-height: 1.2; }
.collection-label { margin: 0 0 .35rem; color: var(--acid); font-size: .68rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.album-summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin: 1.15rem 0; color: var(--muted); font-size: .8rem; }
.album-summary b { color: #fff; font-size: 1.1rem; }
.finish { color: var(--muted); font-size: .84rem; }
.spec-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin: 1.15rem 0; }
.spec-row span { padding-left: .55rem; border-left: 1px solid var(--line); }
.spec-row small, .spec-row b { display: block; }
.spec-row small { color: #74808a; font-size: .68rem; }
.spec-row b { font-size: .84rem; font-weight: 750; }
.card-footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; border-top: 1px solid var(--line); padding-top: 1rem; }
.use-tag { color: var(--ice); font-size: .76rem; }
.detail-button { border: 0; background: transparent; color: #fff; font-weight: 750; cursor: pointer; text-decoration: underline; text-decoration-color: rgba(216,255,62,.7); text-underline-offset: .3rem; }
.empty-state { text-align: center; border: 1px dashed var(--line); border-radius: var(--radius); padding: 4rem 1rem; color: var(--muted); }

.features { width: 100%; max-width: none; padding: 110px max(24px, calc((100vw - var(--max))/2)); background: #0d1217; border-top: 1px solid var(--line); }
.feature-intro { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2rem, 7vw, 7rem); align-items: end; margin-bottom: 3.5rem; }
.feature-summary { padding-bottom: .35rem; }
.feature-summary > p { max-width: 520px; margin-bottom: 1.5rem; color: #aab4bc; font-size: 1.02rem; }
.proof-chips { display: flex; flex-wrap: wrap; gap: .55rem; }
.proof-chips span { padding: .48rem .72rem; border: 1px solid rgba(216,255,62,.35); border-radius: 999px; color: var(--acid); font-size: .68rem; font-weight: 850; letter-spacing: .08em; }
.feature-metrics { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: rgba(255,255,255,.02); }
.feature-metrics article { min-height: 225px; padding: 1.55rem; border-right: 1px solid var(--line); }
.feature-metrics article:last-child { border-right: 0; }
.metric-value { display: block; margin-bottom: 2.8rem; color: var(--acid); font-size: clamp(2rem, 3.4vw, 3.75rem); font-weight: 900; line-height: 1; letter-spacing: -.05em; }
.feature-metrics h3 { margin-bottom: .45rem; font-size: 1rem; }
.feature-metrics p { margin-bottom: 0; color: var(--muted); font-size: .82rem; }
.feature-detail-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-top: 1rem; }
.feature-card { position: relative; min-height: 245px; padding: 2rem 2rem 2rem 5.4rem; overflow: hidden; background: linear-gradient(135deg, #161d24, #10151a); border: 1px solid var(--line); border-radius: var(--radius); }
.feature-card::after { content: ""; position: absolute; right: -55px; bottom: -70px; width: 185px; height: 185px; border: 28px solid rgba(216,255,62,.045); border-radius: 50%; }
.feature-number { position: absolute; left: 2rem; top: 2.1rem; color: var(--acid); font-size: .72rem; font-weight: 800; letter-spacing: .12em; }
.feature-card h3 { margin-bottom: .75rem; font-size: clamp(1.25rem, 2vw, 1.75rem); }
.feature-card p { max-width: 510px; margin-bottom: 0; color: var(--muted); }
.verification-panel { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2rem, 7vw, 7rem); margin-top: 1rem; padding: clamp(2rem, 5vw, 4.5rem); border-radius: var(--radius); background: var(--acid); color: #0a0d10; }
.verification-heading .eyebrow { color: #3d490b; }
.verification-heading .eyebrow span { background: #0a0d10; }
.verification-heading h3 { max-width: 520px; margin-bottom: 1.25rem; font-size: clamp(1.8rem, 3.3vw, 3.3rem); line-height: 1.08; letter-spacing: -.04em; }
.verification-heading > p:last-child { max-width: 530px; margin-bottom: 0; color: #3f470f; }
.test-list { display: grid; grid-template-columns: 1fr 1fr; align-content: start; border-top: 1px solid rgba(8,11,15,.35); }
.test-list div { padding: 1rem .4rem; border-bottom: 1px solid rgba(8,11,15,.35); }
.test-list div:nth-child(odd) { padding-right: 1.3rem; }
.test-list div:nth-child(even) { padding-left: 1.3rem; border-left: 1px solid rgba(8,11,15,.35); }
.test-list b, .test-list span { display: block; }
.test-list b { font-size: 1.08rem; }
.test-list span { font-size: .76rem; color: #3f470f; }
.data-note { max-width: 900px; margin: 1rem 0 0 auto; color: #77828b; font-size: .72rem; text-align: right; }

.technical-specs { width: 100%; max-width: none; padding: 110px max(24px, calc((100vw - var(--max))/2)); background: #eef2f3; color: #0b0e11; }
.technical-specs .section-heading { margin-bottom: 3rem; }
.technical-specs .section-heading .eyebrow { color: #57616a; }
.technical-specs .section-heading > p { color: #53606a; }
.technical-list { margin: 0; border-top: 1px solid #bec8cd; }
.technical-row { display: grid; grid-template-columns: minmax(240px, .72fr) 1.28fr; gap: 2rem; padding: 1.15rem .25rem; border-bottom: 1px solid #cbd3d7; }
.technical-row dt { font-weight: 850; }
.technical-row dt span { display: block; margin-top: .12rem; color: #6e7a83; font-size: .68rem; letter-spacing: .1em; }
.technical-row dd { margin: 0; color: #46525b; }
.spec-note { margin: 1.2rem 0 0; color: #6d7880; font-size: .75rem; }

.product-grid .product-image { background: #edf0f1; }
.product-grid .product-image img { object-fit: contain; }
.product-dialog { width: min(calc(100% - 32px), 1180px); }
.dialog-gallery { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr); min-height: 650px; }
.gallery-stage { position: relative; display: grid; place-items: center; min-height: 650px; overflow: hidden; background: #f1f3f3; }
.gallery-main-image { width: 100%; height: 100%; max-height: 82vh; object-fit: contain; }
.gallery-arrow { position: absolute; z-index: 2; top: 50%; transform: translateY(-50%); width: 46px; height: 46px; border: 1px solid rgba(255,255,255,.22); border-radius: 50%; background: rgba(8,11,15,.78); color: #fff; font-size: 2rem; line-height: 1; cursor: pointer; backdrop-filter: blur(8px); }
.gallery-prev { left: 1rem; }
.gallery-next { right: 1rem; }
.gallery-position { position: absolute; left: 1rem; bottom: 1rem; padding: .3rem .65rem; border-radius: 999px; background: rgba(8,11,15,.78); color: #fff; font-size: .72rem; letter-spacing: .08em; }
.gallery-info { align-self: stretch; padding: 4rem 2rem 2rem; overflow: auto; }
.gallery-info h2 { margin-bottom: 1rem; font-size: clamp(2.3rem, 5vw, 4.6rem); line-height: 1; letter-spacing: -.055em; }
.gallery-info > p:not(.eyebrow) { color: var(--muted); }
.gallery-thumbs { display: grid; grid-template-columns: repeat(3, 1fr); gap: .55rem; margin-top: 1.8rem; }
.gallery-thumbs button { aspect-ratio: 1; padding: 0; overflow: hidden; border: 2px solid transparent; border-radius: 10px; background: #eef1f1; cursor: pointer; }
.gallery-thumbs button.is-active { border-color: var(--acid); }
.gallery-thumbs img { width: 100%; height: 100%; object-fit: contain; }

.technology { display: grid; grid-template-columns: 1.08fr .92fr; min-height: 720px; background: #eef2f3; color: #0b0e11; width: 100%; max-width: none; }
.tech-visual { position: relative; min-height: 640px; overflow: hidden; background: #13191f; }
.tech-visual img { width: 100%; height: 100%; object-fit: cover; }
.tech-index { position: absolute; left: 2rem; bottom: 2rem; color: #fff; background: rgba(8,11,15,.8); padding: .4rem .7rem; font-size: .72rem; letter-spacing: .14em; }
.tech-copy { padding: clamp(4rem, 8vw, 8rem) max(24px, calc((100vw - var(--max))/2)); padding-left: clamp(2rem, 6vw, 7rem); align-self: center; }
.tech-copy .eyebrow { color: #57616a; }
.tech-copy > p:not(.eyebrow) { max-width: 550px; color: #53606a; margin: 1.8rem 0 2.5rem; }
.tech-list { margin: 0; padding: 0; list-style: none; }
.tech-list li { display: grid; grid-template-columns: 44px 1fr; gap: 1rem; padding: 1.1rem 0; border-top: 1px solid #cbd3d7; }
.tech-list li > span { font-size: .72rem; color: #6c7780; }
.tech-list b { font-size: 1rem; }
.tech-list p { color: #66717a; margin: .15rem 0 0; font-size: .9rem; }
.tech-signature { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid #cbd3d7; }
.tech-signature small, .tech-signature strong, .tech-signature span { display: block; }
.tech-signature small { color: #66717a; font-size: .66rem; font-weight: 800; letter-spacing: .12em; }
.tech-signature strong { max-width: 560px; margin: .65rem 0; font-size: clamp(1rem, 1.7vw, 1.35rem); line-height: 1.35; }
.tech-signature span { color: #53606a; font-size: .82rem; font-weight: 750; }

.fitment { padding-top: 120px; padding-bottom: 120px; }
.fitment-copy { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: end; margin-bottom: 3rem; }
.fitment-copy .eyebrow { grid-column: 1 / -1; margin-bottom: 0; }
.fitment-copy > p:last-child { color: var(--muted); max-width: 470px; }
.fitment-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; counter-reset: step; }
.fitment-steps article { position: relative; min-height: 265px; padding: 1.6rem; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.fitment-steps article::after { content: ""; position: absolute; right: -45px; bottom: -45px; width: 145px; height: 145px; border: 22px solid rgba(216,255,62,.06); border-radius: 50%; }
.fitment-steps span { display: block; color: var(--acid); font-size: .75rem; margin-bottom: 5.5rem; }
.fitment-steps h3 { font-size: 1.25rem; margin-bottom: .5rem; }
.fitment-steps p { color: var(--muted); font-size: .9rem; margin-bottom: 0; max-width: 270px; }

.contact { position: relative; width: 100%; max-width: none; min-height: 610px; padding: 100px max(24px, calc((100vw - var(--max))/2)); display: flex; flex-direction: column; align-items: flex-start; justify-content: center; overflow: hidden; background: var(--acid); color: #090c0e; }
.contact .eyebrow { color: #334000; }
.contact .eyebrow span { background: #090c0e; }
.contact h2 { position: relative; z-index: 2; font-size: clamp(3rem, 6vw, 6.5rem); }
.contact > p:not(.eyebrow) { position: relative; z-index: 2; max-width: 540px; margin: 1.5rem 0 2rem; }
.contact .button { position: relative; z-index: 2; background: #090c0e; color: #fff; }
.contact-wheel { position: absolute; right: -6vw; top: 50%; transform: translateY(-50%); width: min(54vw, 650px); aspect-ratio: 1; border: clamp(36px, 5vw, 72px) solid #0a0d10; border-radius: 50%; display: grid; place-items: center; font-size: clamp(2rem, 6vw, 5rem); font-weight: 900; letter-spacing: -.07em; color: var(--acid); box-shadow: inset 0 0 0 4px rgba(216,255,62,.22), 0 0 0 18px rgba(8,11,15,.12); }

footer { min-height: 150px; width: min(calc(100% - 48px), var(--max)); margin: 0 auto; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 2rem; color: #6f7a83; font-size: .74rem; }
footer .brand-logo { width: min(240px, 100%); }
footer p { margin: 0; }
footer p:nth-child(2) { letter-spacing: .15em; }
footer p:last-child { text-align: right; }

.compare-bar { position: fixed; z-index: 40; left: 50%; bottom: 1.1rem; transform: translateX(-50%); width: min(calc(100% - 32px), 760px); padding: .8rem .8rem .8rem 1.1rem; display: flex; align-items: center; gap: 1rem; background: rgba(19,25,31,.94); border: 1px solid rgba(216,255,62,.35); border-radius: 18px; box-shadow: 0 16px 50px rgba(0,0,0,.5); backdrop-filter: blur(15px); }
.compare-bar div { flex: 1; min-width: 0; }
.compare-bar small { color: var(--acid); }
.compare-bar p { margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: .85rem; }
.icon-button { width: 38px; height: 38px; border-radius: 50%; background: transparent; border: 1px solid var(--line); font-size: 1.2rem; cursor: pointer; }

dialog { width: min(calc(100% - 32px), 1000px); max-height: 90vh; padding: 0; color: #fff; background: #11171d; border: 1px solid rgba(255,255,255,.15); border-radius: 24px; box-shadow: 0 30px 100px rgba(0,0,0,.7); overflow: auto; }
dialog::backdrop { background: rgba(0,0,0,.74); backdrop-filter: blur(8px); }
.dialog-close { position: absolute; z-index: 3; right: 1rem; top: 1rem; width: 40px; height: 40px; background: rgba(7,9,12,.82); border: 1px solid var(--line); border-radius: 50%; font-size: 1.35rem; cursor: pointer; }
.dialog-product { display: grid; grid-template-columns: 1fr 1fr; min-height: 610px; }
.dialog-product-image { background: #090d11; min-height: 520px; }
.dialog-product-image img { width: 100%; height: 100%; object-fit: cover; }
.dialog-product-info { padding: clamp(2rem, 5vw, 4.5rem); align-self: center; }
.dialog-product-info h2 { font-size: clamp(2.2rem, 5vw, 4.2rem); line-height: 1; letter-spacing: -.05em; }
.dialog-product-info > p { color: var(--muted); }
.dialog-specs { display: grid; grid-template-columns: 1fr 1fr; margin-top: 2rem; border-top: 1px solid var(--line); }
.dialog-specs div { padding: 1rem 0; border-bottom: 1px solid var(--line); }
.dialog-specs span, .dialog-specs b { display: block; }
.dialog-specs span { font-size: .72rem; color: var(--muted); }
.compare-dialog-content { padding: clamp(2rem, 5vw, 4rem); }
.compare-dialog-content h2 { font-size: 3rem; margin-bottom: 2rem; }
.comparison { display: grid; grid-template-columns: 140px repeat(2, 1fr); }
.comparison > * { padding: .85rem; border-bottom: 1px solid var(--line); }
.comparison .label { color: var(--muted); font-size: .8rem; }
.comparison img { width: 100%; aspect-ratio: 1.4; object-fit: cover; border-radius: 12px; }

@media (max-width: 980px) {
  .main-nav { gap: 1rem; }
  .hero { padding-top: 135px; padding-bottom: 135px; }
  .hero-copy { max-width: 700px; padding-bottom: 0; }
  .catalog-toolbar { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-metrics { grid-template-columns: repeat(2, 1fr); }
  .feature-metrics article:nth-child(2) { border-right: 0; }
  .feature-metrics article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .verification-panel { grid-template-columns: 1fr; }
  .technical-row { grid-template-columns: minmax(210px, .7fr) 1.3fr; }
  .technology { grid-template-columns: 1fr; }
  .tech-visual { min-height: 520px; }
  .tech-copy { padding: 5rem 24px; }
  .contact-wheel { opacity: .12; right: -18vw; }
}

@media (max-width: 720px) {
  .site-header { width: 100%; height: 76px; padding: 0 16px; }
  .brand-logo { width: 176px; }
  .menu-button { display: block; }
  .main-nav { display: none; position: absolute; top: 70px; left: 16px; right: 16px; align-items: stretch; flex-direction: column; gap: 0; padding: .7rem; background: rgba(10,13,16,.98); border: 1px solid var(--line); border-radius: 15px; }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: .8rem; }
  .main-nav .nav-cta { text-align: center; margin-top: .4rem; }
  .hero { min-height: 810px; padding: 120px 20px 150px; align-items: start; }
  h1 { font-size: clamp(2.7rem, 13vw, 4.2rem); }
  .hero-lead { max-width: 92%; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 1rem; }
  .hero-stats { gap: .6rem; }
  .hero-stats div { min-width: 0; flex: 1; padding-left: .6rem; }
  .hero-stats dt { font-size: 1.05rem; }
  .finder-card { width: calc(100% - 32px); display: block; padding: 1rem; }
  .finder-card > label { display: block; margin: 0 0 .5rem .2rem; }
  .finder-field button { display: none; }
  .section { width: calc(100% - 32px); }
  .catalog { padding-top: 120px; padding-bottom: 80px; }
  .section-heading { display: block; }
  .section-heading > p { margin-top: 1rem; }
  .filters { overflow-x: auto; padding-bottom: .25rem; }
  .filter { white-space: nowrap; }
  .product-grid { grid-template-columns: 1fr; }
  .product-image { aspect-ratio: 1.22; }
  .features { padding: 80px 16px; }
  .feature-intro { grid-template-columns: 1fr; gap: 1.5rem; margin-bottom: 2.2rem; }
  .feature-metrics { grid-template-columns: 1fr; }
  .feature-metrics article { min-height: 190px; border-right: 0; border-bottom: 1px solid var(--line); }
  .feature-metrics article:last-child { border-bottom: 0; }
  .metric-value { margin-bottom: 2rem; }
  .feature-detail-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 235px; padding: 1.6rem 1.5rem 1.6rem 4.2rem; }
  .feature-number { left: 1.5rem; top: 1.75rem; }
  .verification-panel { padding: 2rem 1.35rem; }
  .test-list { grid-template-columns: 1fr; }
  .test-list div:nth-child(n) { padding: .9rem .2rem; border-left: 0; }
  .data-note { text-align: left; }
  .technical-specs { padding: 80px 16px; }
  .technical-row { grid-template-columns: 1fr; gap: .45rem; padding: 1.1rem 0; }
  .technical-row dd { font-size: .92rem; }
  .fitment { padding-top: 80px; padding-bottom: 80px; }
  .fitment-copy { grid-template-columns: 1fr; gap: 1rem; }
  .fitment-copy .eyebrow { grid-column: 1; }
  .fitment-steps { grid-template-columns: 1fr; }
  .fitment-steps article { min-height: 230px; }
  .contact { min-height: 600px; }
  .contact-wheel { width: 90vw; right: -38vw; }
  footer { grid-template-columns: 1fr; padding: 2rem 0; gap: .7rem; }
  footer p:last-child { text-align: left; }
  .compare-bar { align-items: center; }
  .compare-bar .button { min-height: 42px; padding: .55rem .8rem; font-size: .78rem; }
  .dialog-product { grid-template-columns: 1fr; }
  .dialog-product-image { min-height: 330px; }
  .dialog-gallery { grid-template-columns: 1fr; min-height: 0; }
  .gallery-stage { min-height: 390px; }
  .gallery-main-image { max-height: 56vh; }
  .gallery-info { padding: 2rem 1.25rem; }
  .gallery-thumbs { grid-template-columns: repeat(4, 1fr); }
  .comparison { grid-template-columns: 90px repeat(2, minmax(160px, 1fr)); min-width: 450px; }
  .compare-dialog-content { overflow-x: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}