:root {
  --bg: #1a1a2e;
  --card-bg: #16213e;
  --accent: #e94560;
  --text: #eee;
  --text-muted: rgba(255,255,255,0.6);
  --radius: 12px;
  --shadow: 0 4px 20px rgba(0,0,0,0.3);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%;
  min-height: 100%;
  font-family: -apple-system, "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.btn-primary {
  display: inline-block;
  padding: 14px 40px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  text-align: center;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(233, 69, 96, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: rgba(255,255,255,0.1);
  color: var(--text);
  border: none;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s;
}

.back-btn:hover {
  background: rgba(255,255,255,0.2);
}

.back-btn::before {
  content: '‹';
  font-size: 20px;
  line-height: 1;
}

/* Header */
.page-header {
  text-align: center;
  padding: 40px 20px 20px;
}

.page-header h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 2px;
}

.page-header .subtitle {
  color: var(--text-muted);
  margin-top: 8px;
  font-size: 15px;
}

/* Responsive */
@media (max-width: 768px) {
  .container { padding: 12px; }
  .page-header { padding: 24px 12px 12px; }
  .page-header h1 { font-size: 24px; }
  .btn-primary { padding: 12px 32px; font-size: 16px; }
}