/* Base */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: #0a0a0a;
  background: #fff;
  line-height: 1.6;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
.center { text-align: center; }
.max-600 { max-width: 600px; margin: 0 auto; }
.subtle { color: #555; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: -9999px; top: -9999px; }
.skip-link:focus { left: 8px; top: 8px; background:#fff; padding:8px 12px; border-radius:6px; box-shadow:0 2px 8px rgba(0,0,0,.1); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.9); backdrop-filter: saturate(180%) blur(6px); border-bottom: 1px solid #eee; }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .5px; }
.brand-mark { width: 18px; height: 18px; display: inline-block; border-radius: 50%; background: radial-gradient(circle at 30% 30%, #111, #444); }
.nav-toggle { display: none; background: transparent; border: 0; font-size: 20px; }
.nav-menu { display: flex; gap: 18px; list-style: none; margin: 0; padding: 0; }
.nav-menu a { text-decoration: none; color: #0a0a0a; padding: 10px 6px; border-radius: 6px; }
.nav-menu a:hover { background: #f4f4f4; }
.lang-switcher select { padding: 8px 10px; border-radius: 8px; border: 1px solid #ddd; background: #fff; }

/* Hero */
.hero { position: relative; min-height: min(86vh, 820px); display: grid; place-items: center; color: #fff; }
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: brightness(.75) saturate(1.05); }
.hero-inner { position: relative; text-align: center; padding: 80px 0; }
.headline { font-size: clamp(28px, 6vw, 56px); line-height: 1.1; margin: 0 0 10px; }
.subhead { font-size: clamp(16px, 2.4vw, 22px); margin: 0 0 26px; color: #eaeaea; }
.btn { display: inline-block; padding: 12px 18px; border-radius: 10px; background: #111; color: #fff; text-decoration: none; }
.btn:hover { background: #333; }
.btn-primary { background: linear-gradient(135deg,#111,#2a2a2a 60%); }

/* Sections */
.section { padding: 72px 0; }
.section-alt { background: #fafafa; }
.grid { display: grid; gap: 28px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { background: #fff; border: 1px solid #eee; border-radius: 16px; padding: 24px; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.checklist { padding-left: 18px; }
.checklist li { margin: 10px 0; }

/* Products */
.product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; margin-top: 26px; }
.product { border: 1px solid #eee; border-radius: 14px; padding: 18px; background: #fff; transition: transform .15s ease, box-shadow .15s ease; }
.product:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0,0,0,.06); }
.product h3 { margin-top: 0; margin-bottom: 8px; font-size: 18px; }
.product p { margin: 0; color: #444; }

/* Features */
.features .feature { text-align: left; }
.features .feature h3 { margin-bottom: 6px; }

/* CTA */
.cta { background: linear-gradient(180deg,#f7f7f7,#fff); border-top: 1px solid #eee; }

/* Footer */
.site-footer { background: #111; color: #ddd; padding-top: 36px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.footer-links { list-style: none; padding: 0; margin: 0; display: flex; gap: 16px; flex-wrap: wrap; }
.footer-links a { color: #ddd; text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }
.legal { padding: 10px 16px 28px; color: #aaa; }

/* Responsive */
@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-toggle { display: inline-block; }
  .nav-menu { display: none; position: absolute; top: 64px; right: 16px; background: #fff; border: 1px solid #eee; border-radius: 12px; padding: 10px; flex-direction: column; }
  .nav-menu.show { display: flex; }
}