:root {
  --bg: #07080c;
  --panel: #0d0f16;
  --panel-2: #11141d;
  --line: #1c2030;
  --text: #e8eaf2;
  --muted: #8b91a7;
  --violet: #8b6bff;
  --violet-2: #4b2fd6;
  --cyan: #38e8ff;
  --radius: 14px;
  --maxw: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 "Segoe UI", system-ui, -apple-system, "Inter", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
code {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: .9em;
  padding: .12em .38em;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #0b0d14;
}

/* ---------- background ---------- */
.bg { position: fixed; inset: 0; z-index: -1; overflow: hidden; }
.bg-glow {
  position: absolute; border-radius: 50%;
  filter: blur(90px); opacity: .55;
}
.bg-glow-a {
  width: 720px; height: 720px; left: -180px; top: -260px;
  background: radial-gradient(circle, rgba(139,107,255,.55), transparent 65%);
}
.bg-glow-b {
  width: 620px; height: 620px; right: -160px; top: 180px;
  background: radial-gradient(circle, rgba(56,232,255,.22), transparent 65%);
}
.bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}
.bg-scan {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(to bottom, rgba(255,255,255,.018) 0 1px, transparent 1px 3px);
  opacity: .5;
}

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 28px;
  max-width: var(--maxw); margin: 0 auto; padding: 18px 24px;
  backdrop-filter: blur(14px);
}
.nav::after {
  content: ""; position: absolute; left: 24px; right: 24px; bottom: 0;
  height: 1px; background: linear-gradient(to right, transparent, var(--line), transparent);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 26px; height: 26px; }
.brand-name { font-weight: 700; letter-spacing: .18em; font-size: 14px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; font-size: 14px; color: var(--muted); }
.nav-links a { transition: color .15s; }
.nav-links a:hover { color: var(--text); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; border-radius: 10px; border: 1px solid transparent;
  font-weight: 600; font-size: 15px; padding: 12px 20px;
  transition: transform .15s, box-shadow .2s, background .2s, border-color .2s;
  cursor: pointer; white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.btn-lg { padding: 15px 28px; font-size: 16px; }
.btn-primary {
  background: linear-gradient(135deg, var(--violet), var(--violet-2));
  color: #fff;
  box-shadow: 0 8px 30px -10px rgba(139,107,255,.8), inset 0 1px 0 rgba(255,255,255,.18);
}
.btn-primary:hover { box-shadow: 0 10px 40px -8px rgba(139,107,255,.95); transform: translateY(-1px); }
.btn-ghost {
  border-color: var(--line); color: var(--text);
  background: rgba(255,255,255,.02);
}
.btn-ghost:hover { border-color: #2b3147; background: rgba(255,255,255,.05); }

/* ---------- hero ---------- */
.hero {
  max-width: var(--maxw); margin: 0 auto;
  padding: 84px 24px 40px;
}
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; letter-spacing: .04em; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px; background: rgba(255,255,255,.02);
}
.chip .dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
}
h1 {
  margin: 26px 0 22px;
  font-size: clamp(44px, 7.2vw, 86px);
  line-height: .98; letter-spacing: -.03em; font-weight: 800;
}
.grad {
  background: linear-gradient(100deg, var(--violet) 10%, #c9b8ff 45%, var(--cyan) 95%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { max-width: 640px; font-size: 18px; color: var(--muted); }
.cta-row { display: flex; gap: 12px; margin: 34px 0 0; flex-wrap: wrap; }

.stats {
  display: flex; gap: 44px; flex-wrap: wrap;
  margin: 64px 0 0; padding: 22px 0 0;
  border-top: 1px solid var(--line);
}
.stats div { display: flex; flex-direction: column; gap: 4px; }
.stats dt { font-size: 11.5px; text-transform: uppercase; letter-spacing: .14em; color: #6b7187; }
.stats dd { margin: 0; font-size: 15px; font-weight: 600; }

/* ---------- sections ---------- */
.section { max-width: var(--maxw); margin: 0 auto; padding: 92px 24px; }
.section-head { max-width: 620px; margin-bottom: 44px; }
.section-head h2, .band h2, .download h2 {
  font-size: clamp(28px, 3.6vw, 40px);
  letter-spacing: -.02em; margin: 0 0 12px; font-weight: 750;
}
.section-head p { color: var(--muted); margin: 0; }

.grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(268px, 1fr));
}
.card {
  position: relative; padding: 26px 24px 24px;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: var(--radius);
  transition: border-color .2s, transform .2s;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), rgba(139,107,255,.10), transparent 60%);
  opacity: 0; transition: opacity .25s;
}
.card:hover { border-color: #2a3050; transform: translateY(-2px); }
.card:hover::before { opacity: 1; }
.card h3 { margin: 16px 0 8px; font-size: 17px; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }
.card b { color: #cfd3e3; font-weight: 600; }
.icon {
  width: 40px; height: 40px; display: grid; place-items: center;
  border-radius: 10px; color: var(--violet);
  background: rgba(139,107,255,.10);
  border: 1px solid rgba(139,107,255,.22);
}
.icon svg { width: 21px; height: 21px; }

/* ---------- protection band ---------- */
.band { padding-top: 0; }
.band-inner {
  display: grid; gap: 40px;
  grid-template-columns: 1.05fr .95fr;
  padding: 44px;
  border: 1px solid var(--line); border-radius: 20px;
  background:
    radial-gradient(700px circle at 0% 0%, rgba(139,107,255,.10), transparent 60%),
    linear-gradient(180deg, #0c0e15, #0a0c12);
}
.band-copy p { color: var(--muted); margin: 0; }
.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.ticks li {
  position: relative; padding-left: 26px; font-size: 14.5px; color: var(--muted);
}
.ticks li::before {
  content: ""; position: absolute; left: 0; top: .45em;
  width: 12px; height: 7px; border-left: 2px solid var(--cyan); border-bottom: 2px solid var(--cyan);
  transform: rotate(-45deg);
}
.ticks b { color: var(--text); font-weight: 600; }

/* ---------- download ---------- */
.download {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center;
  padding: 44px;
  border: 1px solid var(--line); border-radius: 20px;
  background: linear-gradient(120deg, rgba(139,107,255,.10), rgba(56,232,255,.05) 60%, transparent);
}
.muted { color: var(--muted); }
.tiny { font-size: 12.5px; }
.reqs { margin: 20px 0 0; padding: 0; list-style: none; display: grid; gap: 8px; color: var(--muted); font-size: 14.5px; }
.reqs li::before { content: "— "; color: #4a5068; }
.download-actions { display: grid; gap: 10px; justify-items: start; }
.download-actions .btn-lg { width: 100%; }

/* ---------- faq ---------- */
.faq { display: grid; gap: 10px; }
details {
  border: 1px solid var(--line); border-radius: 12px;
  background: var(--panel); padding: 0 20px;
}
details[open] { border-color: #262c44; }
summary {
  cursor: pointer; padding: 16px 0; font-weight: 600; font-size: 15px;
  list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+"; color: var(--violet); font-size: 18px; line-height: 1;
  transition: transform .2s;
}
details[open] summary::after { transform: rotate(45deg); }
details p { margin: 0 0 18px; color: var(--muted); font-size: 14.5px; }

/* ---------- footer ---------- */
.footer {
  max-width: var(--maxw); margin: 0 auto; padding: 36px 24px 56px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  border-top: 1px solid var(--line);
}
.foot-left { display: flex; align-items: baseline; gap: 14px; }
.footer p { margin: 0; max-width: 460px; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (max-width: 860px) {
  .band-inner, .download { grid-template-columns: 1fr; padding: 28px; }
  .nav-links { display: none; }
  .hero { padding-top: 56px; }
  .stats { gap: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .card, .btn { transition: none; }
}