:root {
  --bg: #f3f5f8;
  --card: #ffffff;
  --line: #e5e8ef;
  --text: #1f2937;
  --muted: #6b7280;
  --brand: #111827;
  --brand-strong: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

.page {
  width: min(920px, 92vw);
  margin: 0 auto;
  padding: 28px 0 48px;
}

.hero {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--card);
  padding: 22px;
}

.hero-badge {
  display: inline-block;
  margin: 0;
  padding: 6px 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
}

.hero h1 {
  margin: 12px 0 8px;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(30px, 4vw, 42px);
}

.hero-sub {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin: 20px 2px 10px;
}

.section-head h2 {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: 24px;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.app-grid {
  display: block;
}

.app-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card);
  display: grid;
  grid-template-columns: 110px 1fr auto;
  gap: 16px;
  padding: 16px;
}

.app-cover {
  display: grid;
  place-items: center;
}

.app-cover img {
  width: 88px;
  height: 88px;
  border-radius: 20px;
  object-fit: cover;
  border: 1px solid var(--line);
}

.app-body h3 {
  margin: 0;
  font-size: 24px;
  font-family: "Noto Serif SC", serif;
}

.app-desc {
  margin: 8px 0 6px;
  color: var(--muted);
  line-height: 1.6;
}

.app-meta {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.app-action {
  display: grid;
  align-items: center;
  justify-items: end;
  padding-right: 6px;
}

.btn {
  display: inline-block;
  text-decoration: none;
  padding: 15px 28px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.01em;
  min-width: 180px;
  text-align: center;
}

.btn-primary {
  color: var(--brand-strong);
  background: var(--brand);
}

.footer {
  margin-top: 22px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 900px) {
  .hero {
    text-align: center;
  }

  .section-head {
    flex-direction: column;
    align-items: center;
    gap: 6px;
    text-align: center;
  }

  .app-card {
    grid-template-columns: 1fr;
  }

  .app-cover {
    justify-items: center;
  }

  .app-body {
    text-align: center;
  }

  .app-action {
    justify-items: center;
    padding-right: 0;
  }

  .btn {
    min-width: 0;
    width: auto;
    font-size: 16px;
    padding: 12px 16px;
  }
}