* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  background-color: #fff;
  color: #1a1a1a;
  line-height: 1.6;
}

main {
  max-width: 820px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

h1 {
  font-size: 2.2em;
  margin: 0 0 0.3em;
}

h2 {
  font-size: 1.4em;
  margin-top: 2em;
  padding-bottom: 0.3em;
  border-bottom: 1px solid #e5e5e5;
}

h3 {
  font-size: 1.1em;
  margin-top: 1.5em;
}

a {
  color: #1D6A96;
}

a:hover {
  text-decoration: underline;
}

.subtitle {
  color: #666;
  margin-top: 0;
}

.lang-switch {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

.lang-switch button {
  padding: 6px 14px;
  border: 1px solid #ccc;
  background: #f6f6f6;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.95em;
  color: #333;
}

.lang-switch button.active {
  background: #1D6A96;
  color: #fff;
  border-color: #1D6A96;
}

.back {
  display: inline-block;
  margin-bottom: 16px;
  text-decoration: none;
  color: #666;
  font-size: 0.95em;
}

.back:hover {
  color: #1D6A96;
}

.app-list {
  list-style: none;
  padding: 0;
  margin: 32px 0 0;
  display: grid;
  gap: 16px;
}

.app-card {
  display: block;
  padding: 20px 24px;
  border: 1px solid #e5e5e5;
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.app-card:hover {
  border-color: #1D6A96;
  box-shadow: 0 2px 12px rgba(29, 106, 150, 0.12);
  text-decoration: none;
}

.app-card h2 {
  border: 0;
  margin: 0 0 4px;
  padding: 0;
  font-size: 1.2em;
}

.app-card p {
  margin: 0;
  color: #555;
  font-size: 0.95em;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
}

th, td {
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid #e5e5e5;
  vertical-align: top;
}

th {
  background: #f6f6f6;
  font-weight: 600;
}

code {
  background: #f1f3f5;
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 0.92em;
}

footer {
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px solid #e5e5e5;
  color: #888;
  font-size: 0.9em;
}

@media (prefers-color-scheme: dark) {
  html, body {
    background: #121416;
    color: #e8e8e8;
  }
  h2, th, td, footer {
    border-color: #2a2d30;
  }
  th {
    background: #1b1e21;
  }
  .subtitle, .back, .app-card p, footer {
    color: #9aa0a6;
  }
  .lang-switch button {
    background: #1b1e21;
    border-color: #333;
    color: #ccc;
  }
  .lang-switch button.active {
    background: #1D6A96;
    color: #fff;
  }
  .app-card {
    border-color: #2a2d30;
  }
  code {
    background: #1b1e21;
  }
}