:root{
  --bg:#0b0b0c; --card:#141416; --text:#f4f6f8; --muted:#a4a8ae; --accent:#3b82f6; --border:#202126;
}
@media (prefers-color-scheme: light){
  :root{ --bg:#ffffff; --card:#f6f7f8; --text:#0b0b0c; --muted:#4b5563; --accent:#2563eb; --border:#e5e7eb; }
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6}
.container{max-width:1080px;margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;z-index:1000;background:linear-gradient(to bottom, rgba(0,0,0,.25), transparent);backdrop-filter:saturate(160%) blur(8px);}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:700}
.brand .logo{width:48px;height:48px}
.nav a{color:var(--text);text-decoration:none;margin-left:16px;opacity:.9}
.nav .cta{padding:8px 14px;border-radius:999px;background:var(--accent);color:#fff;margin-left:20px}
.hero{padding:72px 0}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}
.hero-copy h1{font-size:44px;line-height:1.12;margin:0 0 12px}
.hero-copy p{color:var(--muted);margin:0 0 18px}
.cta-row{display:flex;gap:12px;align-items:center}
.cta{display:inline-block;padding:12px 18px;border-radius:12px;background:var(--accent);color:#fff;text-decoration:none;font-weight:600}
.cta.large{padding:14px 22px;font-size:16px}
.ghost{border:1px solid var(--border);padding:12px 18px;border-radius:12px;text-decoration:none;color:var(--text)}
.trust{margin-top:10px;color:var(--muted);font-size:14px}
.appstore-badge{display:inline-block}
.appstore-badge img{height:auto;width: clamp(180px, 26vw, 246px); vertical-align: middle; object-fit: contain}
.hero-art img,.hero-art .hero-video{width:100%;border-radius:16px;box-shadow:0 10px 40px rgba(0,0,0,.25);display:block}
.features{padding:48px 0}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px}
.how{padding:28px 0;background:var(--card);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.step{display:flex;gap:12px;align-items:center;background:var(--bg);border:1px solid var(--border);padding:12px;border-radius:12px}
.step span{width:26px;height:26px;border-radius:8px;background:var(--accent);display:inline-flex;align-items:center;justify-content:center;color:#fff;font-weight:700}
.faq{padding:48px 0}
.faq h2{margin:0 0 12px}
details{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:10px 14px;margin:8px 0}
.compare{padding:48px 0}
.compare .center{margin-bottom:16px}
.compare-wrap{position:relative;width:414px;height:900px;margin:12px auto;border-radius:16px;overflow:hidden;border:1px solid var(--border);background:var(--card)}
.compare-img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:var(--bg)}
.compare-after{position:absolute;inset:0;width:100%;overflow:hidden;clip-path: inset(0 calc(100% - var(--pos, 50%)) 0 0)}
.compare-range{position:absolute;inset:0;width:100%;height:100%;appearance:none;background:transparent;opacity:0;z-index:3;cursor:ew-resize}
.compare-range::-webkit-slider-thumb{appearance:none;width:0;height:0}
.compare-range::-webkit-slider-runnable-track{height:0}
.compare-handle{position:absolute;top:0;bottom:0;left: var(--pos, 50%);width:2px;background:var(--accent);pointer-events:none;z-index:2}
.compare-handle::after{content:"";position:absolute;bottom:-12px;left:-10px;width:20px;height:20px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(59,130,246,.25)}
.download{padding:48px 0}
.center{text-align:center}
.site-footer{border-top:1px solid var(--border);padding:16px 0}
.footer-inner{display:flex;justify-content:space-between;align-items:center}
.links a{color:var(--muted);text-decoration:none;margin-left:12px}

@media (max-width:920px){
  .hero-inner{grid-template-columns:1fr}
  .grid{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
}
@media (max-width:480px){
  .grid,.steps{grid-template-columns:1fr}
  .hero-copy h1{font-size:34px}
}