:root {
  --blue: #38bdf8;
  --blue-dark: #0369a1;
  --dark: #0c1420;
  --dark2: #101c2e;
  --gray: #8296ad;
  --white: #ffffff;
  --green: #22c55e;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(12, 20, 32, 0.35);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, Roboto, sans-serif;
  color: #dce7f5; background: var(--dark);
  line-height: 1.6; -webkit-font-smoothing: antialiased;
}
.container { max-width: 1140px; margin: 0 auto; padding: 0 22px; }
img { max-width: 100%; }
h1, h2, h3 { line-height: 1.15; font-weight: 800; letter-spacing: -0.02em; }
h1 { font-size: clamp(1.9rem, 4.2vw, 2.9rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); text-align: center; color: #fff; }
h3 { font-size: 1.08rem; }
.section-sub { text-align: center; color: var(--gray); max-width: 640px; margin: 10px auto 40px; font-size: 1.02rem; }

.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(12,20,32,0.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo img { border-radius: 9px; }
.logo-text { font-weight: 800; font-size: 1.2rem; color: #fff; }
.logo-accent { color: var(--blue); }
.nav { display: flex; align-items: center; gap: 24px; }
.nav a { color: var(--gray); text-decoration: none; font-weight: 600; font-size: .93rem; }
.nav a:hover { color: var(--blue); }
.btn-nav { background: var(--blue-dark); color: #fff !important; padding: 9px 19px; border-radius: 999px; font-weight: 700; }
.btn-nav:hover { box-shadow: 0 8px 20px rgba(56,189,248,.35); transform: translateY(-1px); }

.hero {
  background:
    radial-gradient(800px 420px at 15% 20%, rgba(56,189,248,.18), transparent 60%),
    radial-gradient(700px 400px at 90% 80%, rgba(3,105,161,.16), transparent 55%),
    linear-gradient(180deg, var(--dark2) 0%, var(--dark) 100%);
  padding: 66px 0 80px;
}
.hero-inner { display: grid; grid-template-columns: 0.35fr 0.65fr; gap: 44px; align-items: center; max-width: 980px; margin: 0 auto; }
.hero-icon-wrap { text-align: center; }
.hero-icon {
  width: 168px; height: 168px; border-radius: 36px;
  box-shadow: 0 24px 60px rgba(56,189,248,.25);
  border: 1px solid rgba(255,255,255,.08);
}
.hero-badge {
  display: inline-block; background: rgba(56,189,248,.12); border: 1px solid rgba(56,189,248,.3);
  color: var(--blue); font-weight: 700; font-size: .82rem;
  padding: 7px 15px; border-radius: 999px; margin-bottom: 18px;
}
.hero h1 { margin-bottom: 14px; color: #fff; }
.hl { color: var(--blue); }
.hero-sub { color: var(--gray); font-size: 1.08rem; margin-bottom: 26px; }
.hero-ctas { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-bottom: 20px; }
.btn-dl {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  background: linear-gradient(180deg, var(--blue), var(--blue-dark));
  color: #fff; text-decoration: none; font-weight: 800;
  padding: 16px 30px; border-radius: 12px; font-size: 1.12rem;
  box-shadow: 0 14px 30px rgba(56,189,248,.35);
  transition: transform .15s, box-shadow .15s;
}
.btn-dl:hover { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(56,189,248,.45); }
.hero-pw { color: var(--gray); font-size: .95rem; }
.hero-pw strong {
  font-family: 'Cascadia Code', monospace; color: var(--green);
  font-size: 1.15rem; letter-spacing: 2px;
}
.hero-checks { display: flex; gap: 18px; flex-wrap: wrap; }
.hero-checks span { color: var(--gray); font-size: .88rem; }

.why { padding: 80px 0; background: var(--dark2); }
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 920px; margin: 0 auto; }
.why-item {
  background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius); padding: 26px 24px;
}
.why-item h3 { color: var(--blue); margin-bottom: 9px; }
.why-item p { color: var(--gray); font-size: .93rem; }

.steps { padding: 80px 0; }
.timeline { max-width: 720px; margin: 0 auto; position: relative; }
.timeline::before {
  content: ""; position: absolute; left: 19px; top: 10px; bottom: 10px;
  width: 2px; background: linear-gradient(180deg, var(--blue), transparent);
}
.timeline-item { position: relative; padding: 0 0 34px 60px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute; left: 10px; top: 2px;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--blue); box-shadow: 0 0 0 5px rgba(56,189,248,.2);
}
.timeline-content h3 { color: #fff; margin-bottom: 6px; }
.timeline-content p { color: var(--gray); font-size: .95rem; }

.specs { padding: 80px 0; background: var(--dark2); }
.specs-box {
  max-width: 680px; margin: 0 auto;
  background: rgba(255,255,255,.03); border: 1px solid rgba(56,189,248,.2);
  border-radius: var(--radius); overflow: hidden;
}
.spec-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 22px; border-bottom: 1px solid rgba(255,255,255,.06);
}
.spec-row:last-child { border-bottom: none; }
.spec-row span { color: var(--gray); font-size: .9rem; }
.spec-row strong { color: #fff; font-size: .92rem; font-weight: 700; }
.spec-pw {
  font-family: 'Cascadia Code', monospace; color: var(--green) !important;
  font-size: 1.05rem !important; letter-spacing: 2px;
}

.faq { padding: 80px 0; }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.08);
  border-radius: 12px; margin-bottom: 11px; overflow: hidden;
}
.faq-item summary {
  padding: 17px 21px; font-weight: 700; cursor: pointer; list-style: none;
  display: flex; align-items: center; justify-content: space-between; font-size: 1rem; color: #fff;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.3rem; color: var(--blue); font-weight: 800; transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item summary:hover { color: var(--blue); }
.faq-item p { padding: 0 21px 18px; color: var(--gray); font-size: .93rem; }

.cta-final {
  background: linear-gradient(135deg, var(--blue-dark), #0284c7 60%, var(--blue));
  padding: 80px 0; text-align: center; color: #fff;
}
.cta-inner h2 { color: #fff; margin-bottom: 12px; }
.cta-inner p { max-width: 540px; margin: 0 auto 30px; color: rgba(255,255,255,.92); font-size: 1.05rem; }
.btn-dl-lg { display: inline-flex; background: #fff; color: var(--blue-dark); font-size: 1.2rem; padding: 18px 36px; box-shadow: 0 16px 40px rgba(0,0,0,.3); }
.btn-dl-lg:hover { box-shadow: 0 20px 48px rgba(0,0,0,.38); }
.dl-password-cta { display: inline-flex; margin-top: 18px; background: rgba(255,255,255,.14); border: 1px dashed rgba(255,255,255,.5); border-radius: 10px; padding: 9px 14px; align-items: center; gap: 10px; }
.dl-password-cta .pw-label { color: #fff; font-weight: 600; font-size: .9rem; }
.dl-password-cta .pw-code { font-family: 'Cascadia Code', monospace; font-weight: 800; font-size: 1.2rem; color: #fff; letter-spacing: 2px; background: rgba(255,255,255,.2); padding: 2px 11px; border-radius: 7px; border: 1px solid rgba(255,255,255,.4); }

.footer { background: #080f1a; color: #8296ad; padding: 50px 0 28px; }
.footer-inner { text-align: center; }
.footer-brand { display: flex; align-items: center; justify-content: center; gap: 9px; font-weight: 800; font-size: 1.15rem; color: #fff; margin-bottom: 11px; }
.footer-brand img { border-radius: 8px; }
.footer-desc { max-width: 420px; margin: 0 auto 20px; font-size: .92rem; color: #6b7d99; }
.footer-copy { font-size: .83rem; color: #4e5f7a; }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-ctas, .hero-checks { justify-content: center; }
  .hero-icon { width: 130px; height: 130px; }
  .why-grid { grid-template-columns: 1fr; }
  .nav a:not(.btn-nav) { display: none; }
}
@media (max-width: 560px) {
  .hero { padding: 50px 0 60px; }
  .btn-dl { font-size: 1rem; padding: 14px 22px; }
}