:root {
  color-scheme: light dark;
  --bg: #f6f7f8;
  --surface: #ffffff;
  --surface-muted: #eef1f4;
  --text: #17202a;
  --muted: #526070;
  --border: #d9dee4;
  --accent: #0f7bf2;
  --accent-strong: #075abd;
  --shadow: 0 18px 40px rgba(30, 41, 59, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

.page-shell {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0;
}

.intro {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  gap: 32px;
  align-items: center;
  padding: 36px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.app-icon {
  width: 168px;
  height: 168px;
  border-radius: 34px;
  display: block;
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.18);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(2.1rem, 5vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 12px;
  font-size: 1.2rem;
  letter-spacing: 0;
}

.summary {
  max-width: 760px;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 1.08rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease, transform 140ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
}

.button.primary {
  background: var(--accent);
  color: #ffffff;
}

.button.primary:hover {
  background: var(--accent-strong);
}

.button.secondary {
  border-color: var(--border);
  background: var(--surface-muted);
  color: var(--text);
}

.button.secondary:hover {
  border-color: var(--accent);
}

.release-status {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.legacy-downloads {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.92rem;
}

.legacy-downloads summary {
  width: max-content;
  max-width: 100%;
  cursor: pointer;
  color: var(--muted);
  font-weight: 700;
}

.legacy-copy {
  max-width: 620px;
  margin: 10px 0 8px;
  color: var(--muted);
}

.legacy-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.legacy-link {
  color: var(--accent-strong);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.legacy-link:hover {
  text-decoration: underline;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.panel {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.panel p {
  margin-bottom: 0;
  color: var(--muted);
}

ul,
ol {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

li + li {
  margin-top: 8px;
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 24px, 1080px);
    padding: 24px 0;
  }

  .intro {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 24px;
  }

  .app-icon {
    width: 112px;
    height: 112px;
    border-radius: 24px;
  }

  .content-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101418;
    --surface: #171d23;
    --surface-muted: #202832;
    --text: #f1f5f9;
    --muted: #adbac7;
    --border: #303a46;
    --accent: #2997ff;
    --accent-strong: #69b7ff;
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  }
}