:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --border: #e4e7ec;
  --text: #1a2027;
  --text-muted: #5b6471;
  --accent: #1f6feb;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 6px 20px rgba(16, 24, 40, 0.06);
  --shadow-hover: 0 4px 8px rgba(16, 24, 40, 0.08), 0 16px 36px rgba(16, 24, 40, 0.12);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 2rem;
}

.site-header__title {
  margin: 0;
  font-size: 1.85rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.site-header__subtitle {
  margin: 0.4rem 0 0;
  color: var(--text-muted);
  font-size: 1rem;
}

/* Layout */
.container {
  flex: 1;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 2.25rem 1.5rem 3rem;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* Card */
.app-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.app-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: #d4d9e0;
}

.app-card__media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #eef0f3;
}

.app-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.app-card:hover .app-card__img {
  transform: scale(1.04);
}

.app-card__body {
  padding: 1.1rem 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  flex: 1;
}

.app-card__title {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 620;
  letter-spacing: -0.01em;
}

.app-card__desc {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.app-card__cta {
  margin-top: auto;
  padding-top: 0.4rem;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 560;
}

/* States */
.empty-state {
  color: var(--text-muted);
  text-align: center;
  padding: 3rem 0;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.site-footer span {
  display: block;
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
}

@media (max-width: 520px) {
  .site-header__inner { padding: 2rem 1.25rem 1.5rem; }
  .container { padding: 1.5rem 1.25rem 2.5rem; }
  .app-grid { grid-template-columns: 1fr; }
}