:root {
  --bg: #08080F;
  --surface: #111119;
  --card: #181824;
  --border: #252535;
  --border-strong: #3A3A55;
  --text: #F1F1F7;
  --text-dim: #9999AA;
  --muted: #66667A;
  --accent: #7C6FFF;
  --accent-hover: #9385FF;
  --cyan: #00D4FF;
  --gradient: linear-gradient(135deg, #7C6FFF 0%, #00D4FF 100%);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(8, 8, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 16px; padding-bottom: 16px;
}
.brand {
  font-weight: 700; font-size: 1.05rem; letter-spacing: 0.5px;
  color: var(--text);
}
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { color: var(--text-dim); font-weight: 500; font-size: 0.95rem; }
.nav-links a:hover { color: var(--text); }
.btn-ghost {
  border: 1px solid var(--border-strong);
  padding: 8px 16px;
  border-radius: 8px;
  color: var(--text) !important;
}
.btn-ghost:hover { border-color: var(--accent); }

/* hero */
.hero {
  padding: 96px 0 80px;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(124, 111, 255, 0.15), transparent 60%),
    radial-gradient(ellipse at 80% 40%, rgba(0, 212, 255, 0.10), transparent 60%);
}
.video-section { padding: 72px 0 56px; }
.eyebrow {
  display: inline-block;
  padding: 6px 12px;
  background: rgba(124, 111, 255, 0.12);
  border: 1px solid rgba(124, 111, 255, 0.35);
  border-radius: 999px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  margin: 0 0 24px;
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -1px;
}
.gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.lead {
  font-size: 1.25rem;
  color: var(--text-dim);
  max-width: 660px;
  margin: 0 0 40px;
}
.cta-row { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.btn-primary, .btn-secondary {
  display: inline-flex; flex-direction: column;
  padding: 16px 28px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 1rem;
  text-align: center;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--gradient);
  color: white !important;
  box-shadow: 0 8px 32px rgba(124, 111, 255, 0.35);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 40px rgba(124, 111, 255, 0.5);
  color: white !important;
}
.btn-sub { font-size: 0.78rem; font-weight: 500; opacity: 0.85; margin-top: 2px; }
.btn-secondary {
  background: var(--card);
  color: var(--text) !important;
  border-color: var(--border-strong);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--text) !important; }
.btn-block { display: block; width: 100%; align-items: center; }
.btn-large { padding: 20px 36px; font-size: 1.1rem; }
.btn-disabled { opacity: 0.5; cursor: not-allowed; }
.hero-note {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 24px;
}

/* screenshots */
.screenshots {
  padding: 80px 0 96px;
  background:
    radial-gradient(ellipse at 20% 80%, rgba(124, 111, 255, 0.07), transparent 55%),
    radial-gradient(ellipse at 80% 20%, rgba(0, 212, 255, 0.05), transparent 55%);
}
.screenshots h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 16px;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.screenshots-sub {
  color: var(--text-dim);
  font-size: 1.05rem;
  margin: 0 0 52px;
  max-width: 520px;
}
.phone-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: end;
}
.phone-card {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.phone-frame {
  width: 100%;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  box-shadow:
    0 0 0 1px rgba(124, 111, 255, 0.08),
    0 20px 60px rgba(0, 0, 0, 0.6),
    0 4px 16px rgba(124, 111, 255, 0.12);
  background: #000;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.phone-frame:hover {
  transform: translateY(-4px);
  box-shadow:
    0 0 0 1px rgba(124, 111, 255, 0.2),
    0 28px 72px rgba(0, 0, 0, 0.65),
    0 6px 24px rgba(124, 111, 255, 0.2);
}
.phone-img {
  width: 100%;
  height: auto;
  display: block;
}
.phone-caption {
  color: var(--text-dim);
  font-size: 0.9rem;
  text-align: center;
  margin: 16px 0 0;
  line-height: 1.4;
}

@media (max-width: 820px) {
  .phone-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

/* features */
.features { padding: 96px 0; }
.features h2, .versions h2, .cta-final h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 48px;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.feature {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  transition: all 0.2s ease;
}
.feature:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.ficon {
  width: 44px; height: 44px;
  background: rgba(124, 111, 255, 0.12);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  font-size: 1.3rem;
  margin-bottom: 16px;
}
.feature h3 { margin: 0 0 8px; font-size: 1.15rem; font-weight: 700; }
.feature p { margin: 0; color: var(--text-dim); font-size: 0.95rem; }

/* versions */
.versions { padding: 80px 0; background: var(--surface); }
.versions-sub { color: var(--text-dim); margin: -32px 0 48px; max-width: 700px; font-size: 1.05rem; }
.version-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.vcard {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px 32px;
  position: relative;
}
.vcard-featured {
  border-color: var(--accent);
  box-shadow: 0 12px 48px rgba(124, 111, 255, 0.15);
}
.vbadge {
  position: absolute;
  top: -12px; left: 24px;
  background: var(--gradient);
  color: white;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.vbadge-soon { background: var(--border-strong); color: var(--text-dim); }
.vcard h3 { margin: 0 0 8px; font-size: 1.5rem; font-weight: 800; }
.vprice { color: var(--text-dim); margin: 0 0 24px; font-size: 0.95rem; }
.vcard ul { list-style: none; padding: 0; margin: 0 0 28px; }
.vcard li { padding: 6px 0; color: var(--text-dim); font-size: 0.95rem; }
.vcard li:has-text("✗"), .vcard li[data-no] { opacity: 0.5; }
.vfine { margin: 16px 0 0; font-size: 0.85rem; color: var(--muted); text-align: center; }
.vfine a { color: var(--accent); }

/* cta final */
.cta-final {
  padding: 96px 0;
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 50%, rgba(124, 111, 255, 0.18), transparent 60%);
}
.cta-final h2 { margin-bottom: 32px; }

/* download page */
.dl-section { padding: 64px 0 96px; }
.dl-wrap { max-width: 760px; }
.dl-wrap h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 12px; font-weight: 800; letter-spacing: -0.5px; }
.dl-wrap .lead { font-size: 1.1rem; margin-bottom: 32px; }
.dl-wrap h2 { font-size: 1.4rem; margin: 40px 0 12px; font-weight: 700; }
.dl-wrap p, .dl-wrap li { color: var(--text-dim); }
.steps { padding-left: 22px; }
.steps li { margin-bottom: 10px; line-height: 1.6; }
.steps li strong, .steps li em { color: var(--text); font-style: normal; }
.steps li em { background: rgba(124, 111, 255, 0.12); padding: 2px 6px; border-radius: 4px; }
.checksum {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  margin: 24px 0;
  font-size: 0.85rem;
  overflow-x: auto;
  word-break: break-all;
}
.checksum code { color: var(--cyan); font-family: 'SF Mono', Consolas, monospace; }

/* footer */
.foot {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  background: var(--surface);
}
.foot-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 32px;
}
.foot-links { display: flex; gap: 24px; align-items: flex-start; }
.foot-links a { color: var(--text-dim); font-weight: 500; }
.foot-links a:hover { color: var(--text); }
.muted { color: var(--muted); font-size: 0.9rem; margin: 4px 0 0; }
.copyright {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0;
}

@media (max-width: 600px) {
  .hero { padding: 64px 0 56px; }
  .video-section { padding: 48px 0 32px; }
  .features, .versions, .cta-final { padding: 64px 0; }
  .nav-links { gap: 14px; }
  .nav-links a:not(.btn-ghost) { display: none; }
  .cta-row { flex-direction: column; align-items: stretch; }
  .btn-primary, .btn-secondary { align-items: center; }
}