body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(145deg, #f7f8fb 0%, #e8eef6 100%);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  color: #1f2937;
}

header {
  background: linear-gradient(90deg, #1e3a5f 0%, #2563eb 100%);
  color: #fff;
  padding: 1.75rem 1rem 1.5rem;
  text-align: center;
  box-shadow: 0 4px 16px rgba(30, 58, 95, 0.25);
}

header h1 {
  margin: 0;
  font-size: 1.55rem;
  font-weight: 700;
}

.header-sub {
  margin: 0.5rem 0 0;
  opacity: 0.9;
  font-size: 0.95rem;
}

main {
  padding: 1.5rem 1rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.shared-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 1.75rem;
}

.shared-link {
  display: inline-block;
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  background: #111827;
  color: #fff;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
}

.shared-link--muted {
  background: #fff;
  color: #1e3a5f;
  border: 1px solid #cbd5e1;
}

.section-title {
  text-align: center;
  font-size: 1.1rem;
  margin: 0 0 1.25rem;
  color: #334155;
  font-weight: 650;
}

.app-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}

.app-item {
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
  padding: 1.5rem 1.25rem 1.35rem;
  width: 280px;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.app-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.12);
}

.app-icon {
  width: 72px;
  height: 72px;
  margin-bottom: 0.75rem;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
}

.app-item h2 {
  color: #0f172a;
  font-size: 1.15rem;
  margin: 0 0 0.4rem;
}

.app-meta {
  margin: 0 0 0.75rem;
  font-size: 0.78rem;
  color: #64748b;
  word-break: break-all;
}

.app-meta code {
  font-size: 0.72rem;
  background: #f1f5f9;
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
}

.app-qrcode {
  width: 160px;
  height: 160px;
  object-fit: contain;
  border: none;
  margin: 0.25rem auto 0;
  display: block;
}

.app-label {
  margin: 0.35rem 0 0.9rem;
  font-size: 0.8rem;
  color: #94a3b8;
}

.h5-btn {
  display: inline-block;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  background: #2563eb;
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
}

.h5-url {
  margin: 0.45rem 0 0;
  font-size: 0.75rem;
  color: #64748b;
}

.separator {
  width: 80%;
  border: none;
  border-top: 1px solid #dbe3ee;
  margin: 2rem auto;
}