:root {
  --navy: #0b132b;
  --navy-2: #1c2541;
  --ink: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --green: #10b981;
  --green-2: #34d399;
  --radius: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

.nav { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.9); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; text-decoration: none; letter-spacing: -.01em; }
.links { display: flex; align-items: center; gap: 22px; font-size: 15px; font-weight: 500; }
.links a:not(.btn) { text-decoration: none; color: var(--muted); }
.links a:not(.btn):hover { color: var(--ink); }

.btn { display: inline-flex; align-items: center; justify-content: center; height: 48px; padding: 0 22px; border-radius: 12px; background: var(--navy); color: #fff; font-weight: 700; text-decoration: none; transition: transform .15s, background .15s; }
.btn:hover { background: var(--navy-2); }
.btn:active { transform: scale(.98); }
.btn-small { height: 38px; padding: 0 14px; font-size: 14px; }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { background: var(--bg-alt); }

.hero { padding: 96px 0 72px; background: radial-gradient(1200px 400px at 80% -10%, rgba(16,185,129,.12), transparent 60%); }
.eyebrow { color: var(--green); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; font-size: 13px; margin: 0 0 12px; }
h1 { font-size: clamp(36px, 6vw, 60px); line-height: 1.05; letter-spacing: -.03em; margin: 0; max-width: 14ch; }
.lead { font-size: 19px; color: var(--muted); max-width: 56ch; margin: 20px 0 0; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.section { padding: 80px 0; }
.section.alt { background: var(--bg-alt); }
h2 { font-size: 32px; letter-spacing: -.02em; margin: 0 0 28px; }
h3 { margin: 0; font-size: 26px; letter-spacing: -.02em; }

.product { display: grid; grid-template-columns: 1.3fr .7fr; gap: 40px; align-items: center; border: 1px solid var(--line); border-radius: 28px; padding: 36px; }
.tag { display: inline-block; font-size: 12px; font-weight: 700; color: #065f46; background: #d1fae5; padding: 4px 10px; border-radius: 999px; margin-bottom: 10px; }
.product-sub { color: var(--muted); margin: 6px 0 18px; font-size: 17px; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.checks li { position: relative; padding-left: 28px; }
.checks li::before { content: ''; position: absolute; left: 0; top: 6px; width: 16px; height: 16px; border-radius: 50%; background: var(--green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5 7 11l5-6' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/12px no-repeat; }
.price { font-weight: 700; margin: 18px 0 0; }

.phone { justify-self: center; width: 230px; height: 440px; border-radius: 36px; background: var(--navy); padding: 12px; box-shadow: 0 30px 60px -20px rgba(11,19,43,.45); }
.phone-screen { height: 100%; border-radius: 26px; background: linear-gradient(180deg, #0f1a38, #0b132b); padding: 18px 14px; display: flex; flex-direction: column; gap: 14px; color: #e2e8f0; }
.ps-top { font-weight: 800; color: #fff; }
.ps-card { border: 1px solid rgba(52,211,153,.35); background: rgba(16,185,129,.1); border-radius: 16px; padding: 14px; }
.ps-muted { font-size: 12px; color: #94a3b8; }
.ps-big { font-size: 40px; font-weight: 800; color: #fff; line-height: 1.1; }
.ps-green { font-size: 12px; color: var(--green-2); }
.ps-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.ps-row span { height: 56px; border-radius: 12px; background: #1c2541; }
.ps-btn { margin-top: auto; background: #fff; color: var(--navy); border-radius: 12px; padding: 12px; text-align: center; font-weight: 700; font-size: 13px; }

.install { margin-top: 40px; }
.install h3 { font-size: 20px; margin-bottom: 16px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.step { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.step p { margin: 6px 0 0; color: var(--muted); font-size: 15px; }

.about { display: grid; grid-template-columns: 1.3fr .7fr; gap: 40px; }
.about p { color: var(--muted); font-size: 17px; }
.facts { display: grid; gap: 12px; align-content: start; }
.facts div { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; display: flex; flex-direction: column; }
.facts span { font-size: 13px; color: var(--muted); }

.contact p { color: var(--muted); margin: -12px 0 12px; }
.email { font-size: clamp(20px, 3.5vw, 28px); font-weight: 800; color: var(--navy); text-decoration: none; border-bottom: 3px solid var(--green-2); word-break: break-all; }

.footer { border-top: 1px solid var(--line); padding: 28px 0; font-size: 14px; color: var(--muted); }
.foot-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
.footer nav { display: flex; gap: 18px; }
.footer a { text-decoration: none; }
.footer a:hover { color: var(--ink); }

.legal { max-width: 760px; padding: 56px 20px 80px; margin: 0 auto; }
.legal h1 { font-size: 38px; max-width: none; }
.legal h2 { font-size: 22px; margin: 36px 0 10px; }
.legal p, .legal li { color: #334155; }
.legal .updated { color: var(--muted); font-size: 14px; }

@media (max-width: 820px) {
  .links a:not(.btn) { display: none; }
  .product, .about { grid-template-columns: 1fr; padding: 24px; }
  .product { padding: 24px; }
  .phone { display: none; }
  .steps { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 48px; }
  .section { padding: 56px 0; }
}