:root {
  --bg: #0b1220;
  --fg: #e5e7eb;
  --accent: #22d3ee;
  --accent2: #a78bfa;
  --muted: #9ca3af;
  --card: #111827;
  --border: #1f2937;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  background:
    radial-gradient(900px 600px at 20% 0%, rgba(34, 211, 238, 0.14), transparent 60%),
    radial-gradient(900px 600px at 80% 10%, rgba(167, 139, 250, 0.12), transparent 55%),
    radial-gradient(900px 700px at 40% 120%, rgba(52, 211, 153, 0.10), transparent 60%),
    var(--bg);
  color: var(--fg);
}

.hero {
  text-align: center;
  padding: 78px 24px 28px;
}

.app-icon {
  width: 96px;
  height: 96px;
  margin: 0 auto 16px;
  display: block;
}

.logo {
  font-size: 54px;
  letter-spacing: 1.5px;
  font-weight: 800;
}

.tagline {
  max-width: 860px;
  margin: 14px auto 26px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.55;
}

.cta .btn {
  display: inline-block;
  margin: 0 8px;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  color: #0b1220;
  background: var(--accent);
  font-weight: 700;
}

.cta .btn.ghost {
  background: transparent;
  color: var(--fg);
  border: 1px solid rgba(34, 211, 238, 0.65);
}

.hero .subline {
  max-width: 980px;
  margin: 18px auto 0;
  color: var(--fg);
  opacity: 0.92;
  font-size: 14px;
  line-height: 1.55;
}

.pill {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(17, 24, 39, 0.75);
  color: var(--muted);
  margin: 0 6px 6px;
  vertical-align: middle;
}

.hero-preview {
  max-width: 1040px;
  margin: 34px auto 0;
  padding: 0 16px;
}

.media-frame {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.7);
  box-shadow:
    0 22px 65px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.04) inset;
}

.media-frame img,
.media-frame video {
  display: block;
  width: 100%;
  height: auto;
}

.section {
  padding: 56px 24px;
}

.section .section-title {
  max-width: 980px;
  margin: 0 auto 10px;
  font-size: 24px;
  letter-spacing: 0.4px;
}

.section .section-desc {
  max-width: 980px;
  margin: 0 auto 22px;
  color: var(--muted);
  line-height: 1.6;
}

.os-download {
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.os-download a {
  color: var(--accent);
}

.os-download__row {
  display: inline-flex;
  gap: 10px;
  align-items: baseline;
  justify-content: center;
  flex-wrap: wrap;
}

.os-download__label {
  color: var(--muted);
}

.os-download__link {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, 0.35);
  padding-bottom: 1px;
}

.os-download__link:hover {
  border-bottom-color: rgba(34, 211, 238, 0.85);
}

.os-download__link--subtle {
  border-bottom-color: rgba(34, 211, 238, 0.18);
  font-weight: 500;
}

.os-download__meta {
  color: var(--muted);
}

.os-download__sep {
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  padding: 24px;
  max-width: 960px;
  margin: 0 auto;
}

.card {
  background: var(--card);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.features {
  max-width: 1040px;
  margin: 0 auto;
}

.screens {
  max-width: 1040px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.screens .card {
  padding: 16px;
}

.screens .media-frame {
  border-radius: 14px;
  margin-bottom: 12px;
}

.screens .caption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.demos {
  max-width: 1040px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 16px;
}

.demo-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.demo-title .hint {
  color: var(--muted);
  font-size: 12px;
}

.downloads {
  text-align: center;
  padding: 40px 24px 60px;
}

.notice {
  max-width: 760px;
  margin: 16px auto 20px;
  padding: 12px 16px;
  border-radius: 10px;
  background: #111827;
  border: 1px solid var(--border);
  color: var(--muted);
  line-height: 1.5;
}

.notice strong {
  color: var(--fg);
}

.downloads .links a {
  color: var(--accent);
  margin: 0 12px;
}

footer {
  text-align: center;
  color: var(--muted);
  padding: 24px;
  border-top: 1px solid var(--border);
}