:root {
  color-scheme: light;

  --bg: #f7f8fa;
  --panel: #ffffff;
  --panel-hi: #f0f2f5;
  --border: #d6dae1;
  --text: #111111;
  --dim: #5a5a5a;

  --mv-primary: #0056a7;
  --mv-primary-hi: #1863dc;
  --mv-teal: #2aa693;

  --logo-filter: none;

  --badge-bg: #f0f2f5;
  --badge-fg: #111111;
  --badge-border: #d6dae1;

  --badge-alt-bg: #e0f1fb;
  --badge-alt-fg: #104a72;
  --badge-alt-border: #9dcfe8;

  --badge-ok-bg: #e2f5ea;
  --badge-ok-fg: #0e5b39;
  --badge-ok-border: #9cd6b5;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;

    --bg: #0b0f16;
    --panel: #131a25;
    --panel-hi: #1b2432;
    --border: #2a3443;
    --text: #e7e9ee;
    --dim: #8b93a3;

    --mv-primary: #1863dc;
    --mv-primary-hi: #3d7fe5;
    --mv-teal: #45d0bd;

    --logo-filter: brightness(0) invert(1);

    --badge-bg: #1b2432;
    --badge-fg: #e7e9ee;
    --badge-border: #2a3443;

    --badge-alt-bg: #132a35;
    --badge-alt-fg: #a6e4ff;
    --badge-alt-border: #264a5f;

    --badge-ok-bg: #133520;
    --badge-ok-fg: #a6f0c6;
    --badge-ok-border: #285f3f;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 80px 24px 48px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.hero {
  text-align: center;
  margin-bottom: 56px;
}

.logo-link {
  display: inline-block;
  margin-bottom: 24px;
  padding: 4px 8px;
  border-radius: 8px;
  transition: background 0.12s;
}

.logo-link:hover {
  background: var(--panel-hi);
}

.logo {
  height: 56px;
  width: auto;
  filter: var(--logo-filter);
  transition: filter 0.18s;
}

h1 {
  margin: 0 0 12px;
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.tagline {
  margin: 0 auto 10px;
  font-size: 18px;
  color: var(--dim);
  max-width: 44ch;
}

.motto {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--mv-primary);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.demos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 18px;
  margin-bottom: auto;
}

.demo-card {
  display: block;
  padding: 24px 26px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  color: inherit;
  text-decoration: none;
  transition: transform 0.12s ease, border-color 0.12s, box-shadow 0.18s;
  position: relative;
  overflow: hidden;
}

.demo-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(24, 99, 220, 0.05), transparent 60%);
  pointer-events: none;
}

.demo-card:hover {
  transform: translateY(-2px);
  border-color: var(--mv-primary);
  box-shadow: 0 10px 30px -12px rgba(24, 99, 220, 0.25);
}

.card-header {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--badge-bg);
  color: var(--badge-fg);
  border: 1px solid var(--badge-border);
}

.badge-alt {
  background: var(--badge-alt-bg);
  color: var(--badge-alt-fg);
  border-color: var(--badge-alt-border);
}

.badge-ok {
  background: var(--badge-ok-bg);
  color: var(--badge-ok-fg);
  border-color: var(--badge-ok-border);
}

.demo-card h2 {
  margin: 0 0 8px;
  font-size: 22px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.demo-card p {
  margin: 0 0 16px;
  color: var(--dim);
  font-size: 15px;
}

.cta {
  font-weight: 600;
  color: var(--mv-primary);
  font-size: 15px;
}

.demo-card:hover .cta {
  color: var(--mv-primary-hi);
}

.footer {
  margin-top: 72px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--dim);
  font-size: 14px;
  text-align: center;
}

.footer-row {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.footer-row.small {
  font-size: 12px;
  margin-bottom: 0;
  margin-top: 6px;
}

.footer a {
  color: var(--mv-primary);
  text-decoration: none;
}

.footer a:hover {
  color: var(--mv-primary-hi);
  text-decoration: underline;
}

.footer .sep {
  opacity: 0.4;
}

.dim {
  color: var(--dim);
}

@media (max-width: 560px) {
  .page {
    padding: 48px 16px 32px;
  }

  h1 {
    font-size: 34px;
  }

  .tagline {
    font-size: 16px;
  }

  .demo-card {
    padding: 20px;
  }
}