:root {
  color-scheme: dark;
  --ink: #e9f4ff;
  --muted: #a9bfd2;
  --line: rgba(139, 207, 255, 0.2);
  --panel: rgba(10, 35, 49, 0.78);
  --cyan: #72d8ff;
  --mint: #66efd2;
  --navy: #03111b;
  --navy-2: #072838;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 50% -10%, rgba(36, 152, 193, .22), transparent 34rem),
    linear-gradient(145deg, var(--navy-2), var(--navy) 54%, #020a10);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a { color: var(--cyan); }
a:hover { color: var(--mint); }
img { max-width: 100%; }

.shell { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid var(--line);
  background: rgba(3, 17, 27, .86);
  backdrop-filter: blur(18px);
}
.nav { min-height: 72px; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); text-decoration: none; }
.brand img { width: 38px; height: 38px; border-radius: 10px; }
.brand strong { letter-spacing: .18em; font-weight: 500; }
.nav-links { margin-left: auto; display: flex; align-items: center; gap: 22px; }
.nav-links a { color: var(--muted); text-decoration: none; }
.lang { padding: 6px 11px; border: 1px solid var(--line); border-radius: 999px; }

.hero { padding: 76px 0 58px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: center; }
.eyebrow { color: var(--mint); letter-spacing: .2em; text-transform: uppercase; font-size: .78rem; }
h1 { margin: 14px 0 18px; font-size: clamp(3rem, 8vw, 6.2rem); line-height: .94; font-weight: 300; letter-spacing: .16em; }
.lead { max-width: 630px; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.24rem); }
.actions { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }
.button { display: inline-flex; padding: 12px 18px; border-radius: 999px; background: var(--cyan); color: #032031; text-decoration: none; font-weight: 700; }
.button.secondary { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.phone-stage { display: flex; justify-content: center; min-height: 520px; }
.phone { width: min(310px, 70vw); border-radius: 30px; box-shadow: 0 34px 90px rgba(0,0,0,.55), 0 0 80px rgba(77, 207, 255, .12); border: 1px solid rgba(255,255,255,.12); }

.feature-banner { overflow: hidden; border: 1px solid var(--line); border-radius: 24px; background: var(--panel); }
.feature-banner img { display: block; width: 100%; }
.section { padding: 58px 0; }
.section h2 { margin: 0 0 12px; font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 400; }
.section-intro { color: var(--muted); max-width: 720px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 30px; }
.card { padding: 24px; background: var(--panel); border: 1px solid var(--line); border-radius: 20px; }
.card h3 { margin-top: 0; font-size: 1.1rem; letter-spacing: .04em; }
.card p { color: var(--muted); margin-bottom: 0; }

.page { width: min(860px, calc(100% - 40px)); margin: 0 auto; padding: 64px 0 88px; }
.page-header { border-bottom: 1px solid var(--line); padding-bottom: 28px; margin-bottom: 34px; }
.page h1 { font-size: clamp(2.2rem, 6vw, 4.4rem); letter-spacing: .04em; line-height: 1.05; }
.page h2 { margin-top: 42px; font-size: 1.55rem; font-weight: 500; }
.page h3 { margin-top: 30px; font-size: 1.12rem; }
.page p, .page li { color: var(--muted); }
.notice { padding: 18px 20px; border-left: 3px solid var(--mint); background: rgba(102,239,210,.07); border-radius: 0 12px 12px 0; }
.faq { padding: 22px 0; border-bottom: 1px solid var(--line); }
.faq h2 { margin: 0 0 8px; font-size: 1.25rem; }
.faq p { margin: 0; }
.contact-box { margin-top: 36px; padding: 28px; border-radius: 20px; border: 1px solid var(--line); background: var(--panel); }

.site-footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); }
.footer-row { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-links a { color: var(--muted); }

@media (max-width: 760px) {
  .shell { width: min(100% - 28px, 1120px); }
  .nav { flex-wrap: wrap; padding: 14px 0; }
  .nav-links { width: 100%; margin-left: 0; justify-content: space-between; gap: 10px; }
  .hero { grid-template-columns: 1fr; padding-top: 52px; gap: 38px; }
  .hero-copy { text-align: center; }
  .lead { margin-inline: auto; }
  .actions { justify-content: center; }
  .cards { grid-template-columns: 1fr; }
  .phone-stage { min-height: auto; }
  .phone { width: min(260px, 70vw); }
  .page { width: min(100% - 28px, 860px); padding-top: 42px; }
}