/* 共享浅色主题 — iPad 风格 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: #f2f2f7;
  color: #1c1c1e;
  font-family: -apple-system, 'PingFang SC', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.accent { color: #5856d6; }
.muted  { color: #8e8e93; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #5856d6;
  color: #fff;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.15s, transform 0.1s;
  box-shadow: 0 2px 8px rgba(88,86,214,0.25);
}
.btn-primary:hover  { background: #4845c4; transform: translateY(-1px); }
.btn-primary:active { transform: scale(0.97); }