:root {
  --bg: #07090D;
  --bg2: #0E1219;
  --bg3: #131A24;
  --surface: #141B27;
  --border: #1E2634;
  --border2: #2A3444;
  --fg: #E7ECF4;
  --fg2: #8E9BB3;
  --fg3: #525F75;
  --brand: #2DD4C0;
  --brand2: #8AF0FF;
  --brand-dim: rgba(45, 212, 192, 0.12);
  --warn: #F5A524;
  --radius: 14px;
  --radius-lg: 20px;
  --maxw: 1120px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(45, 212, 192, 0.08), transparent 55%),
    radial-gradient(ellipse at 85% 15%, rgba(138, 240, 255, 0.05), transparent 50%);
}

a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand2); }

/* ── Nav ─────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 32px;
  backdrop-filter: blur(12px);
  background: rgba(7, 9, 13, 0.72);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 18px; color: var(--fg);
  letter-spacing: -0.01em;
}
.brand-logo { flex-shrink: 0; }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  color: var(--fg2); font-weight: 500; font-size: 14px;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--fg); }

/* ── Hero ─────────────────────────────────────────────────────────── */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 72px 32px 96px;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero-inner { max-width: 620px; }
.chip {
  display: inline-block;
  padding: 5px 12px;
  background: var(--brand-dim);
  color: var(--brand);
  border: 1px solid rgba(45, 212, 192, 0.3);
  border-radius: 999px;
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}
.chip-amber {
  background: rgba(245, 165, 36, 0.1);
  color: var(--warn);
  border-color: rgba(245, 165, 36, 0.3);
}
.hero h1 {
  font-size: clamp(2.2rem, 4.8vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  font-weight: 800;
  margin-bottom: 20px;
}
.h-dim { color: var(--fg2); font-weight: 700; }
.hero-sub {
  font-size: 1.1rem;
  color: var(--fg2);
  margin-bottom: 32px;
  max-width: 540px;
}
.hero-cta {
  display: flex; gap: 12px; flex-wrap: wrap;
  margin-bottom: 24px;
}
.hero-note {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; color: var(--fg3);
}
.hero-note strong { color: var(--fg2); font-weight: 600; }
.dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 8px var(--brand);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

.hero-art {
  display: flex; align-items: center; justify-content: center;
}
.tile {
  width: 180px; height: 180px;
  border-radius: 36px;
  background: linear-gradient(165deg, #121828, #0A0F1A);
  border: 1px solid rgba(45, 212, 192, 0.35);
  display: flex; align-items: center; justify-content: center;
  box-shadow:
    0 24px 60px rgba(45, 212, 192, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}
.tile svg { width: 70%; height: 70%; }
.tile-lg {
  width: 240px; height: 240px;
  border-radius: 48px;
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ── Buttons ──────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 22px;
  border-radius: 10px;
  font-weight: 600; font-size: 14px;
  letter-spacing: 0.005em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.1s, box-shadow 0.15s, background 0.15s;
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(165deg, #2DD4C0, #00B5A4);
  color: #04141C;
  box-shadow: 0 8px 22px rgba(45, 212, 192, 0.3);
}
.btn-primary:hover {
  color: #04141C;
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(45, 212, 192, 0.42);
}
.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border2);
}
.btn-ghost:hover { background: var(--surface); color: var(--fg); }
.btn-xl { padding: 16px 32px; font-size: 16px; border-radius: 12px; }

/* ── Sections ─────────────────────────────────────────────────────── */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 80px 32px;
}
.section-alt {
  background: linear-gradient(180deg, transparent, var(--bg2), transparent);
  max-width: none;
  padding: 80px 0;
}
.section-alt > * { max-width: var(--maxw); margin-left: auto; margin-right: auto; padding: 0 32px; }
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section h2 {
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  letter-spacing: -0.02em;
  font-weight: 800;
  margin-bottom: 14px;
}
.section-head p { color: var(--fg2); font-size: 1.05rem; }

/* ── Feature grid ─────────────────────────────────────────────────── */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: transform 0.15s, border-color 0.15s;
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--border2);
}
.card-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.card-icon svg { width: 22px; height: 22px; }
.ic-storage  { background: rgba(45, 212, 192, 0.12); color: var(--brand); }
.ic-perf     { background: rgba(96, 165, 250, 0.12); color: #60A5FA; }
.ic-start    { background: rgba(167, 139, 250, 0.14); color: #A78BFA; }
.ic-privacy  { background: rgba(45, 212, 192, 0.12); color: var(--brand); }
.ic-tools    { background: rgba(245, 165, 36, 0.12); color: var(--warn); }
.ic-schedule { background: rgba(236, 72, 153, 0.12); color: #EC4899; }
.card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.01em; }
.card p { color: var(--fg2); font-size: 14px; }

/* ── Privacy section ──────────────────────────────────────────────── */
.privacy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.lead { color: var(--fg2); font-size: 1.05rem; margin-top: 20px; }
.promises { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.promises li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--brand);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 14.5px;
  color: var(--fg2);
}
.promises li strong { color: var(--fg); font-weight: 700; }
.promises li em { color: var(--brand); font-style: normal; font-weight: 600; }

/* ── Download section ─────────────────────────────────────────────── */
.section-download {
  display: flex; align-items: center; justify-content: center;
  padding-bottom: 120px;
}
.dl-card {
  background: linear-gradient(165deg, rgba(45, 212, 192, 0.08), rgba(20, 27, 39, 0.9));
  border: 1px solid rgba(45, 212, 192, 0.25);
  border-radius: var(--radius-lg);
  padding: 48px 44px;
  text-align: center;
  max-width: 640px; width: 100%;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}
.dl-card h2 { font-size: 2rem; margin-bottom: 10px; letter-spacing: -0.02em; }
.dl-card > p { color: var(--fg2); margin-bottom: 28px; }
.dl-meta {
  margin-top: 20px;
  color: var(--fg3);
  font-size: 13px;
  display: flex; justify-content: center; gap: 10px; flex-wrap: wrap;
}
.dl-notes {
  margin-top: 28px;
  text-align: left;
  background: rgba(7, 9, 13, 0.6);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
}
.dl-notes summary {
  cursor: pointer; font-weight: 600; color: var(--fg2);
  font-size: 14px;
}
.dl-notes summary:hover { color: var(--fg); }
.dl-notes p {
  margin-top: 12px; font-size: 13.5px; color: var(--fg2);
}
.dl-notes p + p { margin-top: 10px; }
.dl-notes code {
  font-family: var(--mono); font-size: 12.5px;
  background: var(--bg3); padding: 1px 6px; border-radius: 4px;
  color: var(--brand);
}

/* ── Footer ───────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 32px;
  margin-top: 40px;
}
.foot-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
}
.foot-brand { display: flex; align-items: center; gap: 8px; font-weight: 700; }
.foot-links { display: flex; gap: 24px; }
.foot-links a { color: var(--fg2); font-size: 14px; }
.foot-links a:hover { color: var(--brand); }
.foot-copy { color: var(--fg3); font-size: 13px; }

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding: 48px 24px 64px; gap: 40px; }
  .hero-art { order: -1; }
  .tile-lg { width: 160px; height: 160px; border-radius: 36px; }
  .grid { grid-template-columns: 1fr; }
  .privacy-grid { grid-template-columns: 1fr; gap: 32px; }
  .section { padding: 56px 24px; }
  .section-alt { padding: 56px 0; }
  .nav { padding: 12px 20px; }
  .nav-links { gap: 18px; }
  .nav-links a:not(:last-child) { display: none; }
  .dl-card { padding: 32px 24px; }
  .foot-inner { flex-direction: column; text-align: center; }
}