:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --surface-2: #f2f2f0;
  --text: #101010;
  --muted: #636363;
  --line: #e8e8e5;
  --accent: #111111;
  --shadow: 0 18px 48px rgba(16,16,16,.08);
  --radius: 24px;
  --radius-sm: 16px;
  --max: 1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.5;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(calc(100% - 32px), var(--max));margin:0 auto}
.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:12px;top:12px;background:#fff;padding:10px 12px;border-radius:10px;z-index:999}
.site-header{position:sticky;top:0;background:rgba(247,247,245,.88);backdrop-filter: blur(16px);border-bottom:1px solid rgba(0,0,0,.05);z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{display:flex;align-items:center;gap:14px}
.brand img{width:56px;height:56px;object-fit:contain;border-radius:14px;background:#fff;padding:6px;box-shadow:0 8px 24px rgba(0,0,0,.06)}
.brand-title{font-weight:800;letter-spacing:.06em;font-size:1rem}
.brand-sub{font-size:.86rem;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:14px}
.nav-links a{font-size:.95rem;color:var(--muted)}
.cta-header{display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;border-radius:999px;background:#111;color:#fff;font-weight:700;box-shadow:var(--shadow)}
.hero{padding:32px 0 22px}
.hero-grid{display:grid;grid-template-columns:1.03fr .97fr;gap:28px;align-items:start}
.hero-copy,.gallery-card,.feature-card,.compat-card,.info-card,.faq-card{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.hero-copy{border-radius:32px;padding:34px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.82rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;padding:10px 14px;border-radius:999px;background:#111;color:#fff}
.hero h1{font-size:clamp(2.2rem,5vw,4rem);line-height:1.02;margin:18px 0 14px;letter-spacing:-.04em}
.hero p.lead{font-size:1.08rem;color:var(--muted);margin:0 0 24px;max-width:58ch}
.meta-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}
.meta-chip{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:999px;background:#f4f4f2;border:1px solid var(--line);font-weight:600}
.price-box{display:flex;flex-wrap:wrap;align-items:end;gap:14px;margin:18px 0 18px}
.price-label{font-size:.92rem;color:var(--muted)}
.price{font-size:clamp(2.1rem,4vw,3.2rem);line-height:.95;font-weight:900;letter-spacing:-.04em}
.price-note{font-size:.95rem;color:var(--muted);margin-bottom:8px}
.variants h2,.section-title{font-size:1.3rem;margin:24px 0 14px;letter-spacing:-.03em}
.variant-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.variant-btn{background:#fff;border:1px solid var(--line);padding:14px 14px;border-radius:18px;text-align:left;cursor:pointer;transition:.18s ease;box-shadow:0 0 0 rgba(0,0,0,0)}
.variant-btn:hover{transform:translateY(-1px);box-shadow:0 10px 20px rgba(0,0,0,.06)}
.variant-btn.active{border-color:#111;background:#111;color:#fff}
.variant-btn small{display:block;font-size:.82rem;color:inherit;opacity:.75}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
.button{display:inline-flex;align-items:center;justify-content:center;padding:15px 22px;border-radius:999px;border:1px solid #111;font-weight:800;transition:.18s ease}
.button.primary{background:#111;color:#fff}.button.primary:hover{transform:translateY(-1px)}
.button.ghost{background:#fff;color:#111;border-color:var(--line)}
.disclosure{margin-top:14px;font-size:.92rem;color:var(--muted)}
.gallery-card{border-radius:32px;padding:22px}
.gallery-main{aspect-ratio:1/1;border-radius:26px;background:linear-gradient(180deg,#f7f7f5, #efefec);overflow:hidden;display:grid;place-items:center;padding:18px;border:1px solid var(--line)}
.gallery-main img{max-height:100%;width:auto;object-fit:contain}
.thumb-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:14px}
.thumb{aspect-ratio:1/1;border:1px solid var(--line);border-radius:18px;background:#fafaf8;display:grid;place-items:center;cursor:pointer;padding:8px;transition:.18s ease}
.thumb.active{border-color:#111;box-shadow:0 10px 24px rgba(0,0,0,.08)}
.thumb img{width:100%;height:100%;object-fit:contain}
.trust-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding:18px 0 4px}
.info-chip{padding:18px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.info-chip strong{display:block;font-size:1.1rem;margin-bottom:3px}
.info-chip span{color:var(--muted);font-size:.95rem}
.section{padding:28px 0}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feature-card{border-radius:26px;padding:24px}
.feature-icon{width:44px;height:44px;border-radius:14px;background:#111;color:#fff;display:grid;place-items:center;font-size:1.2rem;margin-bottom:18px}
.feature-card h3{margin:0 0 8px;font-size:1.1rem;letter-spacing:-.02em}
.feature-card p{margin:0;color:var(--muted);font-size:.96rem}
.two-col{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}
.compat-card,.faq-card,.info-card{border-radius:28px;padding:28px}
.compat-list{display:grid;gap:12px;margin-top:16px}
.compat-item{display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--line)}
.compat-item:last-child{border-bottom:none;padding-bottom:0}
.compat-dot{width:28px;height:28px;border-radius:50%;background:#111;color:#fff;display:grid;place-items:center;font-size:.9rem;flex:0 0 auto}
.value-list{display:grid;gap:14px}
.value-item{padding:16px 18px;border-radius:20px;background:#f6f6f4;border:1px solid var(--line)}
.value-item strong{display:block;margin-bottom:4px}
.gallery-secondary{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:20px}
.gallery-secondary .tile{border-radius:22px;overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
.gallery-secondary img{width:100%;height:100%;object-fit:cover}
.faq-list details{border-top:1px solid var(--line);padding:16px 0}
.faq-list details:first-child{padding-top:0;border-top:none}
.faq-list summary{cursor:pointer;font-weight:700;list-style:none;position:relative;padding-right:26px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:'+';position:absolute;right:0;top:-1px;color:#777;font-size:1.4rem}
.faq-list details[open] summary::after{content:'–'}
.faq-list p{margin:10px 0 0;color:var(--muted)}
.site-footer{padding:18px 0 110px;color:var(--muted)}
.footer-card{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px;padding:18px 0;border-top:1px solid var(--line)}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-brand img{width:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;padding:5px}
.sticky-buy{position:fixed;left:12px;right:12px;bottom:12px;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:22px;padding:12px;display:flex;align-items:center;justify-content:space-between;gap:12px;box-shadow:0 16px 40px rgba(0,0,0,.12)}
.sticky-price{font-weight:900;font-size:1.15rem;line-height:1}.sticky-price span{display:block;color:var(--muted);font-size:.8rem;font-weight:600}
@media (min-width: 961px){.sticky-buy{display:none}}
@media (max-width: 960px){
  .nav-links a{display:none}
  .hero-grid,.two-col,.features-grid,.trust-strip{grid-template-columns:1fr}
  .variant-grid{grid-template-columns:1fr}
  .thumb-row{grid-template-columns:repeat(4,1fr)}
  .gallery-secondary{grid-template-columns:1fr 1fr}
  .hero-copy,.gallery-card,.compat-card,.faq-card,.info-card,.feature-card{padding:22px;border-radius:24px}
  .hero{padding-top:18px}
}
@media (max-width: 560px){
  .container{width:min(calc(100% - 20px), var(--max))}
  .nav{padding:10px 0}
  .brand img{width:48px;height:48px}
  .brand-title{font-size:.95rem}
  .brand-sub{font-size:.8rem}
  .cta-header{padding:10px 16px}
  .hero h1{font-size:2.15rem}
  .price{font-size:2.4rem}
  .gallery-secondary{grid-template-columns:1fr}
  .thumb-row{grid-template-columns:repeat(4,1fr);gap:8px}
}