:root {
  --bg: #0e0f12;
  --bg-raised: #16181d;
  --text: #e8eaf0;
  --text-dim: #9aa0ac;
  --accent: #5b8cff;
  --accent-hover: #7aa2ff;
  --border: #262932;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset;
}

* {
  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, "Helvetica Neue", Arial,
    sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  border-bottom: 1px solid var(--border);
}
.topbar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 17px;
}
.topbar nav a {
  font-size: 14px;
  color: var(--text-dim);
}
.topbar nav a:hover {
  color: var(--text);
  text-decoration: none;
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 32px;
}

.hero {
  padding: 80px 0 56px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
  font-weight: 700;
}
.hero .accent {
  color: var(--accent);
}
.hero .lede {
  max-width: 600px;
  margin: 0 auto 40px;
  color: var(--text-dim);
  font-size: 18px;
}

.downloads {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  font-weight: 600;
  font-size: 16px;
  transition: background 120ms ease;
  border: 1px solid transparent;
}
.btn-primary:hover {
  background: var(--accent-hover);
  text-decoration: none;
  color: #fff;
}
.btn-primary[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}
.btn-label {
  font-weight: 600;
}
.btn-platform {
  font-weight: 400;
  opacity: 0.85;
}

.version-line {
  margin: 0;
  font-size: 13px;
  color: var(--text-dim);
}

.all-platforms {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
.all-platforms li {
  margin: 0;
}
.btn-secondary {
  display: inline-block;
  padding: 8px 16px;
  background: var(--bg-raised);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  box-shadow: var(--shadow);
}
.btn-secondary:hover {
  border-color: var(--accent);
  text-decoration: none;
  color: var(--text);
}

.features {
  padding: 56px 0;
  border-top: 1px solid var(--border);
}
.features ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}
.features li {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 22px;
  box-shadow: var(--shadow);
}
.features h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
}
.features p {
  margin: 0;
  font-size: 14px;
  color: var(--text-dim);
}

.install-notes {
  padding: 56px 0;
  border-top: 1px solid var(--border);
}
.install-notes h2 {
  font-size: 22px;
  margin: 0 0 16px;
}
.install-notes p {
  font-size: 15px;
  color: var(--text-dim);
  margin: 0 0 12px;
}
.install-notes code {
  background: var(--bg-raised);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
  border: 1px solid var(--border);
}

footer {
  padding: 32px;
  text-align: center;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 13px;
}
footer a {
  color: var(--text-dim);
  text-decoration: underline;
  text-decoration-color: var(--border);
}
footer a:hover {
  color: var(--text);
}