:root{color-scheme:dark;--bg:#100e0c;--ink:#f1e9db;--muted:#b6ac9d;--orange:#ff9d42;--line:#3a3025}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:35px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,Helvetica,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}a:hover{color:var(--orange)}button,a{touch-action:manipulation}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--orange);outline-offset:6px}.skip{position:absolute;top:-100px}.skip:focus{top:8px;z-index:10;background:#000;padding:10px}header{max-width:1440px;margin:auto;display:flex;justify-content:space-between;align-items:center;padding:26px 5%;border-bottom:1px solid var(--line);gap:25px}.brand{font-size:21px;font-weight:900;letter-spacing:-1px;white-space:nowrap}.brand span{font-weight:400;letter-spacing:3px;font-size:15px}.brand i{display:inline-block;width:6px;height:6px;background:var(--orange);border-radius:50%;margin:0 0 3px 8px}nav{display:flex;gap:32px;font-size:13px;color:var(--muted)}.nav-cta{font-size:12px;border:1px solid #68533c;border-radius:5px;padding:10px 16px}.nav-cta span{margin-left:20px}.hero{max-width:1440px;margin:auto;display:grid;grid-template-columns:1fr 1fr;align-items:center;padding:65px 5% 75px;gap:25px;min-height:670px;background:radial-gradient(ellipse at 80% 50%,#45261155,transparent 65%)}.eyebrow{font-size:10px;letter-spacing:2.2px;font-weight:700;color:var(--orange);margin:0 0 28px}.signal{margin-right:7px}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(55px,6.2vw,92px);line-height:.99;letter-spacing:-5px;margin-bottom:28px;font-weight:800}em{font-style:normal;color:var(--orange)}.lead{font-size:17px;line-height:1.7;color:var(--muted)}.actions{display:flex;flex-wrap:wrap;gap:20px;align-items:center;margin:30px 0}.button{display:inline-flex;gap:35px;align-items:center;background:var(--orange);color:#22160c;border-radius:4px;padding:15px 22px;font-size:13px;font-weight:700}.button:hover{background:#ffba76;color:#000}.soon{font-size:8px;letter-spacing:1.1px;color:var(--muted)}.small-note{font-size:11px;color:#9f9485}.small-note a{color:var(--ink)}.hero-art{margin:0;overflow:hidden;position:relative;aspect-ratio:1;box-shadow:0 25px 70px #0005;border:1px solid #503d2c;border-radius:5px}.hero-art img{display:block;width:100%;height:100%;object-fit:cover}.hero-art figcaption{position:absolute;bottom:12px;left:20px;font-size:8px;letter-spacing:2px;color:#e6cab0}.ribbon{display:flex;gap:4vw;justify-content:center;align-items:center;border-block:1px solid var(--line);padding:23px 20px;font-size:9px;letter-spacing:1.7px;color:var(--muted)}.ribbon b{color:var(--orange)}section:not(.hero){max-width:1280px;margin:auto;padding:105px 5%}h2{font-size:clamp(34px,4.1vw,57px);line-height:1.1;letter-spacing:-2px;margin-bottom:28px}.section-intro{display:grid;grid-template-columns:1.25fr 1fr;gap:0 100px;align-items:center}.section-intro .eyebrow{grid-column:1/-1}.section-intro>p:last-child{color:var(--muted);font-size:15px}.preview{margin-top:45px;max-width:760px;margin-inline:auto}.preview-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:12px}.preview-top>span{font-size:9px;letter-spacing:1.5px;color:var(--muted)}.switch{display:flex;background:#211b16;border:1px solid var(--line);padding:4px;border-radius:40px}.switch button{border:0;background:none;color:var(--muted);padding:7px 17px;border-radius:30px;cursor:pointer}.switch button[aria-pressed=true]{color:#1a1008;background:var(--orange)}.preview>img{width:100%;display:block;border-radius:6px;aspect-ratio:1;object-fit:cover}.caption{font-size:11px;color:var(--muted);margin-top:12px}.details{display:grid;grid-template-columns:1fr 1fr;gap:70px;border-top:1px solid var(--line)}.feature-list article{display:flex;gap:25px;border-bottom:1px solid var(--line);padding:25px 0}.feature-list article:first-child{padding-top:0}.feature-list article>span{font-size:10px;color:var(--orange);padding-top:7px}.feature-list h3{font-size:19px;letter-spacing:-.3px;margin-bottom:10px}.feature-list p{font-size:14px;color:var(--muted);margin:0}.app-section{display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center;border-top:1px solid var(--line)}.phone{width:240px;max-width:100%;margin:auto;padding:7px;background:#27221b;border:1px solid #5e5140;border-radius:34px;box-shadow:0 30px 80px #0009;overflow:hidden;line-height:0}.phone img{width:100%;border-radius:27px}.app-section p:not(.eyebrow){color:var(--muted);font-size:15px}.app-section .muted{font-size:11px!important}.text-link{display:inline-block;font-size:13px;color:var(--orange);border-bottom:1px solid #966033;padding:10px 0}.faq{border-top:1px solid var(--line)}.faq h2{max-width:650px}.faq details{border-bottom:1px solid var(--line);padding:22px 0}.faq summary{cursor:pointer;font-size:17px}.faq details p{color:var(--muted);max-width:760px;font-size:14px;margin:20px 0 0}.faq details a{text-decoration:underline}.release{text-align:center;background:radial-gradient(ellipse at 50% 80%,#66320f44,transparent 65%)}.release h2{font-size:clamp(64px,8vw,110px);letter-spacing:-5px;line-height:.98}.release p:not(.eyebrow){color:var(--muted)}.release .domain{font-size:10px;letter-spacing:3px;margin:32px 0 0}footer{border-top:1px solid var(--line);padding:35px 5%;display:flex;justify-content:space-between;align-items:center;gap:30px}footer p{color:#b1a696;font-size:10px;margin:0}footer>div{display:flex;gap:25px;font-size:11px}@media(min-width:1500px){.hero{padding-inline:72px}}@media(max-width:760px){header{padding:20px 6%;gap:10px}nav{display:none}.hero{grid-template-columns:1fr;padding:55px 6% 45px;gap:35px;min-height:0}h1{font-size:64px;letter-spacing:-3px}.hero-art{max-width:540px;width:100%;margin:auto}.hero-copy{max-width:540px}.ribbon{flex-wrap:wrap;gap:13px 20px;font-size:8px}.ribbon b{display:none}section:not(.hero){padding:65px 6%}.section-intro,.details,.app-section{grid-template-columns:1fr;gap:28px}.section-intro .eyebrow{margin:0}.section-intro h2{margin-bottom:0}.app-section{gap:45px}.phone{width:210px}.preview-top>span{font-size:8px;max-width:135px}footer{flex-wrap:wrap;padding:30px 6%}footer p{order:3;width:100%}.eyebrow{font-size:9px}h2{letter-spacing:-1.5px}.release h2{letter-spacing:-3px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Localization: flexible navigation and text, with photographs kept unmirrored. */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.language-picker{flex-shrink:0}.language-picker select{background:#211b16;color:var(--ink);border:1px solid #68533c;border-radius:5px;padding:10px 8px;font:inherit;font-size:12px;max-width:150px;cursor:pointer}.language-picker select:focus-visible{outline:2px solid var(--orange);outline-offset:4px}.language-picker noscript details{position:relative}.language-picker noscript a{display:block;padding:5px}header{flex-wrap:wrap;gap:18px}nav{gap:20px}.hero-copy,.section-intro>*,.details>*,.app-section>*{min-width:0}h1,h2,h3{overflow-wrap:anywhere;hyphens:auto}.brand,.domain,a[href^="mailto:"],a[href="https://bttfclock.app/"]{direction:ltr;unicode-bidi:isolate}.hero-art{direction:ltr}html[dir=rtl] h1,html[dir=rtl] h2{letter-spacing:0}html[dir=rtl] .hero-art figcaption{right:20px;left:auto;direction:rtl}html[dir=rtl] .nav-cta span{margin-left:0;margin-right:20px}html[lang=ja] h1,html[lang=ja] h2,html[lang=zh-Hans] h1,html[lang=zh-Hans] h2{letter-spacing:0;line-height:1.2;word-break:normal;overflow-wrap:break-word}html[lang=ja] .eyebrow,html[lang=zh-Hans] .eyebrow{letter-spacing:1px}html[lang=ja] .ribbon,html[lang=zh-Hans] .ribbon{letter-spacing:0}@media(max-width:1000px){header{gap:12px}nav{gap:15px}h1{font-size:clamp(45px,6.2vw,80px);letter-spacing:-2px}.ribbon{flex-wrap:wrap}}@media(max-width:760px){header .brand{margin-inline-end:auto}.nav-cta{padding:8px 10px;font-size:11px}.nav-cta span{margin-left:8px}html[dir=rtl] .nav-cta span{margin-right:8px}.language-picker select{max-width:125px;padding:8px;font-size:11px}h1{font-size:54px;letter-spacing:-2px}.eyebrow,.soon,.preview-top>span{overflow-wrap:anywhere}html[lang=ja] h1,html[lang=zh-Hans] h1{font-size:46px}html[dir=rtl] .hero-art figcaption{right:12px;left:12px;letter-spacing:1px}}@media(max-width:420px){header{gap:10px}.language-picker{flex-basis:100%}.language-picker select{max-width:100%;width:100%}.language-picker label{display:block}.ribbon{font-size:8px}.hero-art figcaption{font-size:7px;letter-spacing:1px}.hero{padding-top:40px}}
html[lang=ja] h1{font-size:clamp(38px,4.4vw,64px)}@media(max-width:760px){html[lang=ja] h1{font-size:38px}}
.apple-features{border-top:1px solid var(--line)}.apple-features>h2{max-width:800px}.apple-lead{color:var(--muted);font-size:17px}.apple-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin:38px 0 25px}.apple-grid article{min-width:0}.apple-grid h3{font-size:21px;margin:22px 0 12px;overflow-wrap:anywhere}.apple-grid p{font-size:14px;color:var(--muted)}.apple-media{height:220px;background:#201a14;border:1px solid var(--line);border-radius:10px;overflow:hidden;display:flex;align-items:center;justify-content:center}.apple-media img{width:100%;height:100%;object-fit:cover}.watch-media img{object-fit:contain;width:auto;max-width:100%;border-radius:25px;padding:7px}.widget-media img{width:180px;height:180px;border-radius:22px;object-fit:contain}.apple-features>.caption{max-width:800px}@media(max-width:900px){header nav{gap:10px;font-size:12px}.apple-grid{gap:20px}.apple-media{height:180px}.widget-media img{width:150px;height:150px}}@media(max-width:760px){.apple-grid{grid-template-columns:1fr;gap:32px}.apple-media{height:240px}.widget-media img{width:205px;height:205px}.apple-grid h3{margin-top:18px}.apple-features>.caption{line-height:1.6}}
.widget-media{position:relative;padding-bottom:20px}.widget-preview-label{position:absolute;bottom:5px;inset-inline:10px;font-size:8px;line-height:1.3;color:var(--muted);text-align:center}
/* Cinematic viewport entrance — photograph remains in its original coordinate system. */
header{position:absolute;inset:0 0 auto;z-index:5;max-width:none;border:0;padding:24px 5%;background:linear-gradient(#100e0cd9,transparent)}
.hero{position:relative;isolation:isolate;max-width:none;min-height:100svh;padding:130px 7% 160px;display:flex;overflow:hidden;background:#100e0c}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(ellipse at 70% 45%,#f69a3030,transparent 65%);animation:lamp-glow 7s ease-in-out infinite alternate;pointer-events:none}
.hero-art{position:absolute;z-index:-2;inset:0 0 0 30%;width:70%;height:100%;max-width:none;aspect-ratio:auto;border:0;border-radius:0;box-shadow:none;mask-image:linear-gradient(90deg,transparent,#000 35%);animation:scene-enter 1.8s ease-out both}
.hero-art img{object-position:60% 58%;filter:brightness(.7);transform:scale(1.02)}
.hero-art::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,#100e0c 0%,transparent 28%,#100e0c22 80%)}
.hero-art figcaption{bottom:120px;left:auto;right:7%;opacity:.6;font-size:8px}
.hero-copy{width:52%;max-width:690px;position:relative;z-index:1;text-shadow:0 2px 35px #100e0c88}
.hero h1{font-size:clamp(62px,7.5vw,112px);letter-spacing:-5px;line-height:1.01}
.hero .lead{max-width:470px;color:#d2c5b5}.hero .eyebrow{letter-spacing:3px}
.hero-copy>*{animation:radio-enter 1s cubic-bezier(.2,.8,.2,1) both}.hero-copy h1{animation-delay:.13s}.hero-copy .lead{animation-delay:.25s}.hero-copy .actions{animation-delay:.38s}.hero-copy .small-note{animation-delay:.5s}
.hero .button{box-shadow:0 8px 40px #ff9d4218;transition:transform .25s,box-shadow .25s}.hero .button:hover{transform:translateY(-3px);box-shadow:0 10px 45px #ff9d4240}
.tune-button{display:inline-flex;align-items:center;gap:10px;border:1px solid #9e795555;background:#1a140eb3;color:#e6d2b7;border-radius:4px;padding:14px 17px;cursor:pointer;font:inherit;font-size:12px;backdrop-filter:blur(12px)}.tune-button:hover{border-color:var(--orange);color:var(--orange)}.tune-button:disabled{cursor:wait}.tune-icon{color:var(--orange);font-size:18px}.equalizer{display:flex;align-items:center;height:18px;gap:3px}.equalizer i{display:block;width:2px;height:4px;background:var(--orange)}.equalizer i:nth-child(2){height:12px}.equalizer i:nth-child(3){height:8px}.equalizer i:nth-child(4){height:15px}.is-tuning .equalizer i{animation:signal-bar .23s ease-in-out infinite alternate}.is-tuning .equalizer i:nth-child(2n){animation-delay:.12s}
.hero-dial{position:absolute;bottom:48px;left:7%;right:7%;direction:ltr;opacity:.8;animation:radio-enter 1.2s .6s both}.dial-label{display:flex;justify-content:space-between;align-items:center;font:9px monospace;letter-spacing:3px;color:#a69783}.dial-frequency{font-size:20px;color:#ffb96c;letter-spacing:2px;font-variant-numeric:tabular-nums}.dial-frequency small{font-size:9px}.dial-track{height:34px;position:relative;margin-top:12px;border-top:1px solid #8b684147;background:repeating-linear-gradient(90deg,#9b7a4c66 0 1px,transparent 1px 1%);background-size:100% 10px;background-repeat:no-repeat}.dial-numbers{display:flex;justify-content:space-between;padding-top:14px;font:9px monospace;letter-spacing:1px;color:#a69783}.dial-needle{position:absolute;top:-4px;bottom:8px;left:2.5%;width:2px;background:#ff913a;box-shadow:0 0 15px #ff7b27,0 0 35px #ff7b27;animation:dial-arrive 2s .4s both}.is-tuning .dial-needle{animation:dial-search 1.6s ease-in-out both}.scroll-cue{position:absolute;bottom:7px;left:calc(50% - 15px);width:30px;text-align:center;font-size:20px;color:#9f8970;animation:scroll-bob 2s ease-in-out infinite}
@keyframes radio-enter{from{opacity:0;transform:translateY(24px);filter:blur(5px)}to{opacity:1;transform:none;filter:none}}@keyframes scene-enter{from{opacity:0;transform:scale(1.07)}to{opacity:1;transform:scale(1)}}@keyframes lamp-glow{to{opacity:.45}}@keyframes signal-bar{to{height:3px}}@keyframes dial-arrive{from{left:90%;opacity:0}to{left:2.5%;opacity:1}}@keyframes dial-search{0%{left:2.5%}30%{left:70%}55%{left:37%}80%{left:89%}100%{left:2.5%}}@keyframes scroll-bob{50%{transform:translateY(4px)}}
html[dir=rtl] .hero-copy{text-align:right}html[dir=rtl] .hero-art{inset:0 30% 0 0;mask-image:linear-gradient(270deg,transparent,#000 35%)}
@media(max-width:760px){header{padding:18px 6%}.hero{min-height:100svh;padding:150px 6% 135px;align-items:center}.hero-copy{width:100%;max-width:540px}.hero h1{font-size:clamp(48px,10vw,74px);letter-spacing:-2px}.hero .lead{font-size:15px;max-width:340px}.hero-art{inset:0;width:100%;height:100%;mask-image:none;margin:0}.hero-art img{object-position:65% center;filter:brightness(.33)}.hero-art::after{background:linear-gradient(90deg,#100e0cbb,transparent),linear-gradient(0deg,#100e0c,transparent 50%)}.hero-art figcaption{display:none}.hero .actions{gap:12px;margin-block:24px}.hero .eyebrow{letter-spacing:2px;font-size:8px}.hero-dial{left:6%;right:6%;bottom:40px}.dial-label{font-size:8px;letter-spacing:1px}.dial-frequency{font-size:17px}html[dir=rtl] .hero-art{inset:0;mask-image:none}.hero .button{padding:14px 16px;gap:20px}.tune-button{padding:12px}.hero .small-note{margin-bottom:0}}
@media(max-height:650px) and (min-width:761px){.hero{padding-top:105px;padding-bottom:125px}.hero h1{font-size:65px}.hero .eyebrow{margin-bottom:16px}.hero .actions{margin-block:20px}}
@media(prefers-reduced-motion:reduce){.hero *, .hero::before{animation:none!important;transition:none!important}.hero-copy>*{opacity:1;filter:none}.hero-art{transform:none}}
/* A definite viewport height also resolves the full-bleed photograph on Safari. */
.hero{height:100svh;min-height:620px}
@media(max-width:760px){.hero{min-height:700px}}

.carplay-viewport{position:relative;width:100%;aspect-ratio:1480/888;overflow:hidden;flex-shrink:0}.carplay-media .carplay-viewport img{position:absolute;width:102.702703%;max-width:none;height:159.459459%;inset-inline-start:-1.351351%;top:-13.963964%;object-fit:fill}.carplay-media{direction:ltr}

.clock-sound{display:inline-flex;align-items:center;gap:7px;background:#1a140eb3;border:1px solid #9e795555;border-radius:4px;color:var(--muted);font:inherit;font-size:11px;padding:14px 12px;cursor:pointer}.clock-sound[aria-pressed=true]{color:#e6d2b7}.clock-sound[aria-pressed=false]{opacity:.7}.clock-sound:hover{border-color:var(--orange)}.hero .actions{flex-wrap:wrap}