*{box-sizing:border-box}
:root{--bg:#ffffff;--text:#0b0b0f;--muted:#6b7280;--accent:#1363df;--accent-ink:#ffffff;--alt:#f6f7fb;--border:#e5e7eb;--shadow:0 10px 30px rgba(0,0,0,.06);--radius:18px}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;line-height:1.55}
.container{width:min(1120px,92vw);margin-inline:auto}
.narrow{width:min(760px,92vw)}
.center{text-align:center}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.85);backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{font-weight:800;letter-spacing:.5px}
.nav a{color:var(--text);text-decoration:none;margin-left:18px;font-weight:600}
.nav a:hover{color:var(--accent)}
.hero{padding:48px 0}
.hero-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:34px;align-items:center}
.cover-img{width:100%;height:auto;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);background:#fff;}
.hero-copy h1{font-size:clamp(26px,3.2vw,44px);margin:0 0 8px}
.price{font-size:22px;font-weight:700;margin:.2rem 0 1rem}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:14px 0 8px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:999px;text-decoration:none;font-weight:700;border:1px solid transparent;transition:.2s transform,.2s box-shadow,.2s background}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-secondary{background:#fff9c4;border-color:#fbc02d;color:#333}
.btn-lg{padding:16px 24px;font-size:18px}
.tagline{color:var(--muted);margin-top:8px}
.section{padding:56px 0;border-top:1px solid var(--border)}
.section.alt{background:var(--alt)}
.section h2{font-size:clamp(22px,2.6vw,32px);margin:0 0 18px}
.video-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.video iframe{width:100%;height:320px;border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow);background:#000}
.features{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.features li{display:flex;gap:12px;padding:14px;border:1px solid var(--border);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
.features .icon{font-size:24px}
.price-lg{font-size:38px;margin:.25rem 0 1rem;font-weight:800}
.muted{color:var(--muted)}
.site-footer{padding:28px 0 40px;border-top:1px solid var(--border);margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:10px}
.footer-tab{display:block;text-align:center;padding:18px;border-radius:var(--radius);border:1px solid var(--border);text-decoration:none;font-weight:800;color:var(--text);background:#fff;box-shadow:var(--shadow)}
.footer-tab:hover{border-color:var(--accent);color:var(--accent)}
.tinyprint{color:var(--muted);font-size:14px}
@media (max-width: 960px){.hero-grid{grid-template-columns:1fr}.video-grid{grid-template-columns:1fr}.features{grid-template-columns:1fr}}