:root {
  color-scheme: dark;
  --bg: #06070a;
  --card: #10131a;
  --card-line: rgba(255, 255, 255, 0.07);
  --text: #f3f4f7;
  --muted: #8d94a5;
  --faint: #5e6475;
  --blue: #7fa6ff;
  --purple: #ae95ff;
  --teal: #45e0c2;
  --orange: #ff9f5a;
  --pink: #ff86a2;
  --gold: #ffc857;
  --radius: 22px;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 10; backdrop-filter: saturate(160%) blur(16px); -webkit-backdrop-filter: saturate(160%) blur(16px); background: rgba(6, 7, 10, 0.72); border-bottom: 1px solid var(--card-line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 18px; letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.nav { display: flex; gap: 22px; font-size: 15px; }
.nav a { color: var(--muted); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); text-decoration: none; }

/* Hero */
.hero { position: relative; padding: 72px 0 48px; text-align: center; }
.hero::before {
  content: ""; position: absolute; inset: -120px 0 auto; height: 620px; pointer-events: none;
  background: radial-gradient(closest-side at 50% 45%, rgba(127, 166, 255, 0.18), transparent 70%),
              radial-gradient(closest-side at 35% 60%, rgba(174, 149, 255, 0.12), transparent 70%),
              radial-gradient(closest-side at 65% 60%, rgba(69, 224, 194, 0.10), transparent 70%);
}
.rings { display: block; position: relative; width: min(300px, 70vw); margin: 0 auto 28px; filter: drop-shadow(0 0 28px rgba(127, 166, 255, 0.35)); }
.rings circle.arc { stroke-dashoffset: var(--len); animation: draw 1.6s cubic-bezier(.2,.7,.2,1) forwards; }
.rings circle.arc:nth-of-type(2) { animation-delay: .15s; }
.rings circle.arc:nth-of-type(3) { animation-delay: .3s; }
@keyframes draw { to { stroke-dashoffset: var(--end); } }
@media (prefers-reduced-motion: reduce) { .rings circle.arc { animation: none; stroke-dashoffset: var(--end); } }

.eyebrow { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); margin-bottom: 14px; }
h1 { position: relative; margin: 0 auto; max-width: 760px; font-size: clamp(38px, 7vw, 64px); line-height: 1.05; letter-spacing: -0.035em; font-weight: 800; }
.grad { background: linear-gradient(100deg, #b9ceff 0%, #ae95ff 45%, #45e0c2 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { position: relative; margin: 20px auto 0; max-width: 580px; font-size: clamp(17px, 2.4vw, 20px); color: var(--muted); }
.cta { position: relative; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 32px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 50px; padding: 0 26px; border-radius: 999px; font-weight: 700; font-size: 16px; }
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.btn-primary { background: var(--blue); color: #06070a; box-shadow: 0 8px 30px rgba(127, 166, 255, 0.35); }
.btn-ghost { border: 1px solid var(--card-line); color: var(--text); background: rgba(255, 255, 255, 0.03); }
.note { position: relative; margin-top: 14px; font-size: 14px; color: var(--faint); }

/* Sections */
section { padding: 56px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 36px; }
h2 { margin: 0; font-size: clamp(28px, 4.4vw, 40px); line-height: 1.12; letter-spacing: -0.025em; font-weight: 800; }
.section-head p { margin: 14px 0 0; color: var(--muted); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--card-line); border-radius: var(--radius); padding: 26px; }
.card h3 { margin: 16px 0 6px; font-size: 19px; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.dot { width: 44px; height: 44px; border-radius: 50%; border: 5px solid currentColor; box-shadow: 0 0 22px -2px currentColor; opacity: .95; }

.devices { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.chip { padding: 10px 18px; border-radius: 999px; background: var(--card); border: 1px solid var(--card-line); color: var(--text); font-weight: 600; font-size: 15px; }
.chip small { color: var(--faint); font-weight: 500; margin-left: 6px; }

.privacy-band .card { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; padding: 36px; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.checks li { position: relative; padding-left: 30px; color: var(--muted); }
.checks li::before { content: ""; position: absolute; left: 0; top: 6px; width: 16px; height: 16px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 12px rgba(69, 224, 194, .6); }
.checks strong { color: var(--text); font-weight: 600; }

/* Document pages */
.doc { max-width: 780px; margin: 0 auto; padding: 48px 20px 72px; }
.doc h1 { font-size: clamp(32px, 6vw, 44px); text-align: left; margin: 0 0 6px; }
.doc h2 { font-size: 22px; margin: 2.2em 0 .5em; letter-spacing: -0.01em; }
.doc p, .doc li { color: #c9ced9; }
.doc strong { color: var(--text); }
.doc em { color: var(--faint); font-style: normal; }
.doc .table { overflow-x: auto; margin: 1em 0; border: 1px solid var(--card-line); border-radius: 16px; }
.doc table { border-collapse: collapse; width: 100%; font-size: 15px; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 12px 14px; border-bottom: 1px solid var(--card-line); }
.doc tr:last-child td { border-bottom: 0; }
.doc th { color: var(--muted); font-weight: 600; background: rgba(255,255,255,.02); }
.faq { display: grid; gap: 12px; margin-top: 24px; }
.faq details { background: var(--card); border: 1px solid var(--card-line); border-radius: 16px; padding: 18px 20px; }
.faq summary { cursor: pointer; font-weight: 600; color: var(--text); list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--muted); font-weight: 400; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 10px 0 0; }
.contact-card { margin-top: 28px; background: var(--card); border: 1px solid var(--card-line); border-radius: var(--radius); padding: 26px; }
.contact-card p { margin: 0 0 14px; }

/* Footer */
footer { border-top: 1px solid var(--card-line); padding: 32px 0 44px; color: var(--faint); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px; }
footer nav { display: flex; gap: 20px; }
footer a { color: var(--muted); }

@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .privacy-band .card { grid-template-columns: 1fr; padding: 26px; }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .nav { gap: 16px; font-size: 14px; }
  .hero { padding-top: 48px; }
  section { padding: 40px 0; }
  .btn { width: 100%; }
}