:root {
  --bg: #080a0e;
  --surface: #11141a;
  --surface-2: #171b23;
  --text: #f6f3ed;
  --muted: #a7a9b0;
  --line: rgba(255,255,255,.11);
  --red: #ff4638;
  --orange: #ff9a2e;
  --purple: #9d52f7;
  --blue: #2f91ff;
  --teal: #21c8ad;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.5; overflow-x: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; padding: .7rem 1rem; background: white; color: black; }
.skip-link:focus { top: 1rem; }

.site-header { width: min(calc(100% - 2rem), var(--max)); height: 78px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 2rem; border-bottom: 1px solid var(--line); position: relative; z-index: 20; }
.brand { display: inline-flex; align-items: center; gap: .65rem; font-size: .95rem; letter-spacing: .14em; font-weight: 750; }
.brand b { color: var(--red); }
.brand-mark { display: grid; place-items: center; width: 30px; aspect-ratio: 1; border-radius: 8px; background: linear-gradient(135deg, var(--red), #aa1f27); box-shadow: 0 0 28px rgba(255,70,56,.3); font-size: .9rem; letter-spacing: 0; }
nav { display: flex; align-items: center; gap: clamp(1.2rem, 3vw, 2.4rem); color: #c9c9ce; font-size: .86rem; }
nav a, footer a { transition: color .2s ease; }
nav a:hover, footer a:hover { color: white; }

.button { display: inline-flex; align-items: center; justify-content: center; gap: .8rem; min-height: 50px; padding: .85rem 1.35rem; border: 1px solid var(--line); border-radius: 7px; color: white; font-weight: 720; letter-spacing: .01em; transition: transform .2s ease, background .2s ease, border-color .2s ease, opacity .2s ease; }
.button:hover { transform: translateY(-2px); border-color: rgba(255,255,255,.28); }
.button-small { min-height: 42px; padding: .65rem 1rem; font-size: .82rem; background: rgba(255,255,255,.06); }
.button-primary { background: linear-gradient(135deg, #ff5948, #e62e35); border-color: transparent; box-shadow: 0 14px 40px rgba(255,70,56,.2); }
.button-primary:hover { background: linear-gradient(135deg, #ff6d5e, #f0373f); }
.button-quiet { background: rgba(255,255,255,.035); color: #d9d9de; }

.hero { width: min(calc(100% - 2rem), var(--max)); min-height: 670px; margin: 0 auto; padding: 5.8rem 0 4.5rem; display: grid; grid-template-columns: .93fr 1.07fr; align-items: center; gap: clamp(2rem, 5vw, 5rem); position: relative; }
.hero-copy { position: relative; z-index: 3; }
.eyebrow { display: flex; align-items: center; gap: .7rem; color: #c6c7cc; font-size: .69rem; font-weight: 750; letter-spacing: .16em; }
.eyebrow span { width: 30px; height: 2px; background: var(--red); box-shadow: 0 0 14px var(--red); }
h1, h2, h3, p { margin-top: 0; }
h1 { margin: 1.2rem 0 1.6rem; font-size: clamp(3.4rem, 6.3vw, 6.25rem); line-height: .92; letter-spacing: -.065em; font-weight: 820; }
h1 em, h2 em { color: var(--red); font-family: Georgia, "Times New Roman", serif; font-weight: 500; }
.hero-lead { max-width: 600px; color: #b6b7bd; font-size: clamp(1rem, 1.4vw, 1.18rem); line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin: 2rem 0; }
.trust-row { display: flex; flex-wrap: wrap; gap: .85rem 1.2rem; color: #989ba3; font-size: .78rem; }
.trust-row i { display: inline-grid; place-items: center; width: 17px; height: 17px; margin-right: .3rem; border-radius: 50%; background: rgba(33,200,173,.14); color: var(--teal); font-style: normal; font-size: .65rem; }
.hero-visual { position: relative; min-width: 0; isolation: isolate; padding: 1.4rem .35rem .7rem; }
.hero-visual::before { content: ""; position: absolute; z-index: -1; inset: 7% -5% 0 2%; border-radius: 42% 58% 50% 46%; background: radial-gradient(circle at 53% 60%, rgba(67,75,255,.28), rgba(157,82,247,.13) 38%, rgba(255,70,56,.16) 62%, transparent 76%); filter: blur(28px); opacity: .9; }
.hero-visual img { position: relative; z-index: 1; display: block; width: 100%; height: auto; object-fit: contain; filter: contrast(1.035) saturate(1.04) drop-shadow(0 30px 34px rgba(0,0,0,.52)); }
.hero-visual::after { content: "DIGITAL DIY PROJECT"; position: absolute; z-index: 2; bottom: 1rem; right: 1.2rem; color: rgba(255,255,255,.55); font-size: .58rem; letter-spacing: .2em; }
.version-pill { position: absolute; z-index: 4; top: 1.1rem; right: -1rem; background: rgba(8,10,14,.88); border: 1px solid var(--line); border-radius: 999px; padding: .55rem .8rem; backdrop-filter: blur(12px); color: #b9bac0; font-size: .63rem; letter-spacing: .1em; }
.version-pill strong { color: white; margin-left: .35rem; }
.hero-stat { position: absolute; z-index: 3; display: flex; align-items: center; gap: .55rem; min-width: 128px; padding: .7rem .9rem; background: rgba(13,15,20,.88); border: 1px solid var(--line); backdrop-filter: blur(10px); box-shadow: 0 15px 38px rgba(0,0,0,.35); }
.hero-stat strong { font-size: 1.55rem; line-height: 1; color: var(--red); }
.hero-stat span { color: #bbbcc2; font-size: .64rem; line-height: 1.25; text-transform: uppercase; letter-spacing: .08em; }
.hero-stat-left { left: -2rem; bottom: 3rem; border-radius: 7px 16px 7px 16px; }
.hero-stat-right { right: -1.5rem; bottom: 6.8rem; border-radius: 16px 7px 16px 7px; }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(70px); pointer-events: none; opacity: .18; }
.hero-glow-one { width: 330px; height: 330px; background: var(--red); left: -18rem; top: 0; }
.hero-glow-two { width: 300px; height: 300px; background: var(--purple); right: -14rem; bottom: -7rem; }

.ticker { min-width: max-content; padding: 1.1rem 3rem; display: flex; justify-content: center; gap: 2rem; background: #f0ede6; color: #101116; font-size: .72rem; font-weight: 780; letter-spacing: .09em; text-transform: uppercase; }
.ticker i { color: var(--red); font-style: normal; }

.section { width: min(calc(100% - 2rem), var(--max)); margin: 0 auto; padding: clamp(5rem, 9vw, 8rem) 0; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 2rem; }
.section-heading h2, .showcase h2, .demo h2, .build h2, .firmware h2, .safety h2, .purchase h2 { margin: 1rem 0 0; font-size: clamp(2.6rem, 5vw, 4.7rem); line-height: 1; letter-spacing: -.05em; }
.section-intro { max-width: 530px; margin: 1rem 0 3.2rem auto; color: var(--muted); font-size: 1.05rem; line-height: 1.7; }
.centred { align-items: center; flex-direction: column; text-align: center; }

.feature-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1rem; }
.feature-card { grid-column: span 4; min-height: 330px; padding: 1.7rem; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); position: relative; overflow: hidden; }
.feature-card::after { content: ""; position: absolute; width: 190px; height: 190px; border-radius: 50%; right: -90px; bottom: -100px; background: currentColor; opacity: .09; filter: blur(10px); }
.feature-card-large { grid-column: span 8; }
.feature-card-wide { grid-column: span 12; min-height: 270px; }
.card-number { position: absolute; right: 1.4rem; top: 1.3rem; color: #656871; font: 600 .65rem/1 ui-monospace, monospace; }
.feature-icon { width: 49px; height: 49px; display: grid; place-items: center; border: 1px solid currentColor; border-radius: 50%; font-size: 1.2rem; margin-bottom: 3.6rem; }
.feature-card h3 { margin-bottom: .6rem; color: var(--text); font-size: 1.35rem; letter-spacing: -.025em; }
.feature-card p { max-width: 590px; margin: 0; color: #aaaeb6; line-height: 1.65; font-size: .92rem; }
.red-card { color: var(--red); background: linear-gradient(145deg, rgba(255,70,56,.1), var(--surface) 48%); }
.purple-card { color: var(--purple); background: linear-gradient(145deg, rgba(157,82,247,.09), var(--surface) 48%); }
.blue-card { color: var(--blue); background: linear-gradient(145deg, rgba(47,145,255,.09), var(--surface) 48%); }
.amber-card { color: var(--orange); background: linear-gradient(145deg, rgba(255,154,46,.09), var(--surface) 48%); }
.teal-card { color: var(--teal); background: linear-gradient(135deg, rgba(33,200,173,.1), var(--surface) 47%); }
.slot-demo { display: flex; gap: .55rem; margin-top: 1.6rem; }
.slot-demo span { width: 24px; height: 24px; border-radius: 50%; border: 1px solid #4a4d56; background: #252931; }
.slot-demo .active { border-color: var(--red); background: var(--red); box-shadow: 0 0 15px rgba(255,70,56,.5); }
.mode-copy { display: grid; grid-template-columns: .8fr 1.2fr; gap: 4rem; align-items: center; }
.mode-copy .feature-icon { margin-bottom: 1.4rem; }
.mode-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: .7rem; }
.mode-list span { padding: 1rem; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 6px; background: rgba(255,255,255,.025); }
.mode-list b { color: white; font-size: .9rem; }
.mode-list small { color: #92959d; margin-top: .15rem; }

.showcase { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(3rem, 8vw, 7rem); align-items: center; }
.showcase-image { position: relative; isolation: isolate; padding: 2rem 1rem 1.25rem; border: 1px solid rgba(255,255,255,.08); border-radius: 28px 8px 28px 8px; background: radial-gradient(circle at 52% 58%, rgba(71,79,255,.2), transparent 42%), linear-gradient(145deg, rgba(255,70,56,.1), rgba(12,14,20,.42) 52%, rgba(157,82,247,.1)); overflow: hidden; }
.showcase-image::before { content: ""; position: absolute; z-index: -1; inset: 13% 4% 3%; border-radius: 50%; background: rgba(70,77,255,.22); filter: blur(45px); }
.showcase-image img { position: relative; display: block; width: 100%; height: auto; object-fit: contain; filter: saturate(1.04) contrast(1.035) drop-shadow(0 25px 28px rgba(0,0,0,.5)); }
.encoder-stop-note { position: absolute; z-index: 3; left: 1.25rem; right: 1.25rem; bottom: 1.1rem; display: grid; gap: .2rem; padding: .8rem 1rem; border: 1px solid rgba(255,70,56,.48); border-radius: 7px; background: rgba(8,10,14,.9); backdrop-filter: blur(10px); box-shadow: 0 12px 30px rgba(0,0,0,.35); }
.encoder-stop-note b { color: var(--red); font: 750 .65rem/1.3 ui-monospace, monospace; letter-spacing: .09em; }
.encoder-stop-note span { color: #d4d5da; font-size: .75rem; line-height: 1.45; }
.showcase-copy > p, .build-copy > p, .firmware-panel p, .purchase-copy > p { color: var(--muted); line-height: 1.75; margin: 1.7rem 0 2rem; }
.clean-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.clean-list li { display: flex; gap: 1rem; padding: .9rem 0; border-bottom: 1px solid var(--line); color: #d8d8dc; font-size: .9rem; }
.clean-list span { color: var(--red); font: .7rem ui-monospace, monospace; }

.demo { display: grid; grid-template-columns: 1fr .82fr; gap: clamp(3rem, 9vw, 8rem); align-items: center; }
.demo-copy > p { max-width: 560px; color: var(--muted); line-height: 1.75; margin: 1.7rem 0 2rem; }
.demo-points { display: grid; gap: .65rem; padding-top: 1.2rem; border-top: 1px solid var(--line); }
.demo-points span { color: #aeb0b7; font-size: .84rem; }
.demo-points b { display: inline-block; min-width: 5.3rem; color: white; text-transform: uppercase; letter-spacing: .08em; font-size: .7rem; }
.demo-player { position: relative; justify-self: center; width: min(100%, 430px); padding: .7rem .7rem 2.7rem; border: 1px solid rgba(255,255,255,.12); border-radius: 22px 7px 22px 7px; background: radial-gradient(circle at 50% 30%, rgba(61,70,255,.2), transparent 45%), #101218; box-shadow: 0 35px 75px rgba(0,0,0,.4); }
.demo-player::before { content: ""; position: absolute; z-index: -1; inset: 12% -12% 2% 20%; border-radius: 50%; background: rgba(255,70,56,.18); filter: blur(50px); }
.demo-player video { display: block; width: 100%; aspect-ratio: 9 / 16; object-fit: cover; border-radius: 15px 4px 15px 4px; background: #06070a; }
.demo-caption { position: absolute; left: 1rem; right: 1rem; bottom: .9rem; color: #8f929b; font-size: .58rem; letter-spacing: .14em; text-align: center; }

.package { border-top: 1px solid var(--line); }
.package-grid { margin-top: 3.5rem; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.package-grid article { min-height: 260px; padding: 1.6rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.015); transition: background .25s ease; }
.package-grid article:hover { background: rgba(255,255,255,.04); }
.package-icon { width: 43px; height: 43px; display: grid; place-items: center; margin-bottom: 2.4rem; border: 1px solid var(--red); border-radius: 7px; color: var(--red); font: 700 .7rem/1 ui-monospace, monospace; }
.package-grid h3 { margin-bottom: .5rem; font-size: 1.08rem; }
.package-grid p { color: #999ca4; font-size: .87rem; line-height: 1.6; }
.package-grid article > span { color: #666a74; font: 600 .6rem ui-monospace, monospace; letter-spacing: .08em; }

.build { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(3rem, 8vw, 8rem); align-items: center; }
.build-notes { display: grid; grid-template-columns: repeat(2, 1fr); gap: .7rem; }
.build-notes div { padding: .9rem 1rem; border-left: 2px solid var(--red); background: var(--surface); }
.build-notes b, .build-notes span { display: block; }
.build-notes b { color: #777b85; font-size: .58rem; letter-spacing: .1em; text-transform: uppercase; }
.build-notes span { color: white; margin-top: .2rem; font-size: .9rem; }
.build-visual { position: relative; min-height: 560px; display: grid; place-items: center; overflow: hidden; padding: 2rem 1.5rem 3.6rem; border-radius: 28px 8px 28px 8px; border: 1px solid var(--line); background: radial-gradient(circle at 52% 45%, rgba(54,64,255,.2), transparent 43%), linear-gradient(145deg, rgba(255,70,56,.08), var(--surface) 55%, rgba(157,82,247,.08)); }
.build-visual img { display: block; width: 100%; height: auto; max-height: 590px; object-fit: contain; filter: saturate(1.03) contrast(1.03) drop-shadow(0 28px 32px rgba(0,0,0,.5)); }
.diagram-label { position: absolute; bottom: 0; left: 0; right: 0; padding: .85rem 1rem; background: rgba(8,10,14,.87); backdrop-filter: blur(8px); color: #bfc1c7; font-size: .62rem; letter-spacing: .12em; }

.firmware-panel { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(3rem, 8vw, 7rem); align-items: center; padding: clamp(2rem, 5vw, 4.5rem); border: 1px solid rgba(47,145,255,.25); border-radius: 11px; background: radial-gradient(circle at 75% 10%, rgba(47,145,255,.14), transparent 38%), linear-gradient(135deg, #10151d, #0e1116); }
.text-link { display: inline-flex; gap: .5rem; border-bottom: 1px solid rgba(255,255,255,.3); padding-bottom: .2rem; font-weight: 700; }
.text-link span { color: var(--blue); }
.purchase-only-note { display: inline-flex; align-items: center; gap: .6rem; padding: .75rem .9rem; border: 1px solid rgba(33,200,173,.24); border-radius: 6px; background: rgba(33,200,173,.065); color: #c8ccd2; font-size: .82rem; }
.purchase-only-note span { color: var(--teal); font-weight: 800; }
.firmware-window { border: 1px solid rgba(255,255,255,.15); border-radius: 10px; background: #0a0d12; box-shadow: 0 25px 60px rgba(0,0,0,.4); overflow: hidden; transform: rotate(1.4deg); }
.window-bar { height: 42px; display: flex; align-items: center; gap: .35rem; padding: 0 .8rem; border-bottom: 1px solid var(--line); color: #71747c; font-size: .67rem; }
.window-bar i { width: 8px; height: 8px; border-radius: 50%; background: #373a42; }
.window-bar i:first-child { background: var(--red); }
.window-bar span { margin-left: auto; }
.window-body { min-height: 250px; display: flex; align-items: center; flex-direction: column; justify-content: center; text-align: center; padding: 2rem; }
.status-dot { width: 11px; height: 11px; margin-bottom: 1rem; background: var(--teal); border-radius: 50%; box-shadow: 0 0 18px var(--teal); }
.window-body strong { font-size: 1.3rem; }
.window-body small { margin-top: .2rem; color: #70747e; font: .58rem ui-monospace, monospace; letter-spacing: .09em; }
.progress { width: 85%; height: 5px; margin: 2rem 0 .7rem; border-radius: 20px; background: #20242b; overflow: hidden; }
.progress i { display: block; width: 100%; height: 100%; background: linear-gradient(90deg, var(--blue), var(--teal)); }
.window-body > b { color: var(--teal); font: .62rem ui-monospace, monospace; letter-spacing: .12em; }

.safety { border-top: 1px solid var(--line); }
.safety .section-heading > p { max-width: 520px; margin: 0; color: var(--muted); font-size: 1rem; line-height: 1.75; }
.safety-grid { margin-top: 3.5rem; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.safety-grid article { min-height: 245px; padding: 1.8rem; border: 1px solid var(--line); border-radius: 9px; background: linear-gradient(145deg, rgba(33,200,173,.075), var(--surface) 52%); position: relative; overflow: hidden; }
.safety-grid article::after { content: ""; position: absolute; width: 150px; height: 150px; right: -80px; bottom: -90px; border-radius: 50%; background: var(--teal); opacity: .07; filter: blur(8px); }
.safety-number { display: block; margin-bottom: 3.2rem; color: var(--teal); font: 650 .66rem/1 ui-monospace, monospace; letter-spacing: .1em; }
.safety-grid h3 { margin-bottom: .65rem; font-size: 1.2rem; letter-spacing: -.02em; }
.safety-grid p { margin: 0; color: #a5a8b0; font-size: .9rem; line-height: 1.7; }

.faq { border-top: 1px solid var(--line); }
.faq-list { max-width: 900px; margin: 3rem auto 0; }
details { border-bottom: 1px solid var(--line); }
summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 1rem; padding: 1.35rem 0; font-weight: 700; }
summary::-webkit-details-marker { display: none; }
summary span { color: var(--red); font-size: 1.3rem; font-weight: 400; transition: transform .2s ease; }
details[open] summary span { transform: rotate(45deg); }
details p { max-width: 720px; padding: 0 0 1.35rem; margin: 0; color: #9da0a8; line-height: 1.7; }

.purchase-card { display: grid; grid-template-columns: 1.15fr .85fr; background: linear-gradient(135deg, rgba(255,70,56,.12), #101318 45%); border: 1px solid rgba(255,70,56,.33); border-radius: 12px; overflow: hidden; }
.purchase:first-child { padding-top: clamp(1.5rem, 3vw, 2.5rem); padding-bottom: clamp(2.5rem, 5vw, 4rem); }
.purchase-copy { padding: clamp(2rem, 5vw, 4rem); }
.purchase-copy ul { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: .7rem; }
.purchase-copy li { color: #c6c7cc; font-size: .84rem; }
.purchase-copy li::before { content: "✓"; margin-right: .5rem; color: var(--teal); }
.price-box { display: flex; flex-direction: column; justify-content: center; padding: clamp(2rem, 5vw, 4rem); background: rgba(0,0,0,.25); border-left: 1px solid var(--line); text-align: center; }
.price-label { color: #7f828b; font: .62rem ui-monospace, monospace; letter-spacing: .12em; }
.sale-badge { align-self: center; margin-bottom: .85rem; padding: .42rem .72rem; border: 1px solid rgba(33,200,173,.42); border-radius: 999px; background: rgba(33,200,173,.12); color: var(--teal); font: 800 .7rem ui-monospace, monospace; letter-spacing: .12em; }
.price-previous { margin-top: .65rem; color: #777a82; font-size: 1rem; text-decoration: line-through; text-decoration-thickness: 2px; }
.price { margin: .15rem 0 1.3rem; font-size: clamp(4rem, 7vw, 6.3rem); font-weight: 820; letter-spacing: -.07em; line-height: 1; }
.price sup { font-size: .35em; vertical-align: top; position: relative; top: .16em; margin-right: .1em; color: var(--red); }
.price small { font-size: .3em; color: #7f828b; }
.price-box > small { margin: .75rem 0 1rem; color: #777a82; }
.discount-note { margin: -.25rem 0 1rem; color: var(--teal); font-size: .78rem; font-weight: 700; }
.payment-line { padding-top: 1rem; border-top: 1px solid var(--line); color: #a7a9b0; font-size: .75rem; }
.payment-line span { color: var(--teal); }

footer { width: min(calc(100% - 2rem), var(--max)); margin: 0 auto; padding: 2.2rem 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: auto 1fr auto; gap: 1rem 2rem; align-items: center; color: #747780; font-size: .76rem; }
footer p { margin: 0; }
footer > div { display: flex; gap: 1.2rem; color: #a6a8ae; }
footer > small { grid-column: 1 / -1; color: #51545c; }

@media (max-width: 900px) {
  nav { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 4rem; }
  .hero-copy { max-width: 720px; }
  .hero-visual { width: calc(100% - 2rem); margin: 1rem auto 0; }
  .hero-stat-left { left: -1rem; }
  .hero-stat-right, .version-pill { right: -1rem; }
  .ticker { justify-content: flex-start; overflow: hidden; }
  .feature-card, .feature-card-large { grid-column: span 6; }
  .feature-card-wide { grid-column: span 12; }
  .showcase, .demo, .build, .firmware-panel { grid-template-columns: 1fr; }
  .safety .section-heading { align-items: start; flex-direction: column; }
  .package-grid { grid-template-columns: repeat(2, 1fr); }
  .purchase-card { grid-template-columns: 1fr; }
  .price-box { border-left: 0; border-top: 1px solid var(--line); }
}

@media (max-width: 620px) {
  .site-header { height: 68px; }
  .site-header .button-small { display: none; }
  .hero { min-height: 0; padding-top: 3.2rem; }
  h1 { font-size: clamp(3.15rem, 15vw, 4.5rem); }
  .hero-actions { flex-direction: column; }
  .hero-actions .button { width: 100%; }
  .hero-visual { width: 100%; }
  .hero-stat { min-width: auto; }
  .hero-stat-right { bottom: 5.7rem; }
  .hero-stat span { display: none; }
  .encoder-stop-note { position: relative; left: auto; right: auto; bottom: auto; margin: .8rem .2rem 0; }
  .version-pill { top: .7rem; right: .7rem; }
  .section { padding: 4.3rem 0; }
  .section-intro { margin-left: 0; }
  .feature-card, .feature-card-large, .feature-card-wide { grid-column: span 12; }
  .mode-copy { grid-template-columns: 1fr; gap: 2rem; }
  .mode-list, .package-grid, .build-notes, .purchase-copy ul { grid-template-columns: 1fr; }
  .safety-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 300px; }
  .package-grid { border-left: 1px solid var(--line); }
  .build-visual { min-height: 420px; padding: 1.2rem .7rem 3.4rem; }
  .build-visual img { height: auto; }
  .firmware-panel { padding: 1.3rem; }
  .firmware-window { transform: none; }
  footer { grid-template-columns: 1fr; }
  footer > div { flex-wrap: wrap; }
  footer > small { grid-column: auto; }
}

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