/* ══════════════════════════════════════════════
   XX大学新生攻略站 全局样式
   ══════════════════════════════════════════════ */

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

:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --success: #059669;
  --warning: #d97706;
  --danger: #dc2626;
  --bg: #f8fafc;
  --bg-card: #fff;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.1);
  --radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.section { padding: 60px 0; }
.section-title { font-size: 28px; font-weight: 800; margin-bottom: 32px; text-align: center; }

/* Header */
.header {
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: #fff; padding: 24px 0; text-align: center;
}
.header h1 { font-size: 26px; }
.header .subtitle { font-size: 14px; opacity: .85; margin-top: 4px; }

/* Hero */
.hero {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #3730a3 100%);
  color: #fff; padding: 70px 0; text-align: center;
}
.hero h2 { font-size: 36px; margin-bottom: 16px; }
.hero p { font-size: 17px; opacity: .9; line-height: 1.8; }
.hero-buttons { margin-top: 28px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 50px;
  font-size: 15px; font-weight: 600; text-decoration: none;
  transition: transform .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-primary { background: #fff; color: var(--primary); }
.btn-warning { background: var(--warning); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-outline { border: 2px solid #fff; color: #fff; background: transparent; }
.btn-lg { padding: 16px 40px; font-size: 18px; }

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 28px 24px; text-decoration: none; color: var(--text);
  border: 1px solid var(--border);
  transition: transform .2s, box-shadow .2s;
  position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card-icon { font-size: 36px; margin-bottom: 12px; }
.card h3 { font-size: 20px; margin-bottom: 8px; }
.card p { font-size: 14px; color: var(--text-light); line-height: 1.6; }
.card-tag {
  position: absolute; top: 16px; right: 16px;
  font-size: 12px; padding: 3px 10px; border-radius: 20px;
  background: #fef3c7; color: #92400e;
}
.card-tag.new { background: #dbeafe; color: #1e40af; }

/* Trust */
.trust { background: #fff; }
.trust-box {
  max-width: 700px; margin: 0 auto; text-align: center;
  background: #f1f5f9; padding: 32px; border-radius: var(--radius);
}
.trust-box p { margin-bottom: 12px; }
.trust-stats {
  display: flex; gap: 40px; justify-content: center;
  margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--border);
}
.trust-stats div { text-align: center; }
.trust-stats strong { font-size: 28px; color: var(--primary); display: block; }

/* Footer */
.footer {
  background: #1e293b; color: #94a3b8;
  text-align: center; padding: 32px 0; font-size: 13px;
}
.footer strong { color: #e2e8f0; }

/* Page Banner */
.page-banner {
  background: linear-gradient(135deg, #1e1b4b, #3730a3);
  color: #fff; padding: 50px 0; text-align: center;
}
.page-banner h2 { font-size: 32px; margin-bottom: 8px; }
.page-banner p { opacity: .85; }

/* Content area */
.content-area { padding: 50px 0; }
.content-area .container { max-width: 800px; }
.content-area h3 { font-size: 22px; margin: 32px 0 12px; color: var(--primary); }
.content-area h3:first-child { margin-top: 0; }
.content-area p { margin-bottom: 16px; color: var(--text-light); }

/* Info Box */
.info-box {
  border-radius: var(--radius); padding: 20px 24px; margin: 20px 0;
  border-left: 4px solid;
}
.info-box.tip { background: #f0fdf4; border-color: var(--success); }
.info-box.warn { background: #fffbeb; border-color: var(--warning); }
.info-box.danger { background: #fef2f2; border-color: var(--danger); }
.info-box h4 { margin-bottom: 8px; font-size: 16px; }

/* Table */
.compare-table {
  width: 100%; border-collapse: collapse; margin: 20px 0;
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow);
}
.compare-table th, .compare-table td {
  padding: 14px 16px; text-align: center; border: 1px solid var(--border);
}
.compare-table th { background: var(--primary); color: #fff; font-weight: 600; }
.compare-table tr:nth-child(even) { background: #f8fafc; }
.compare-table .highlight { background: #fef3c7 !important; font-weight: 700; }

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: #fff; border-radius: var(--radius);
  padding: 40px; text-align: center; margin: 40px 0;
}
.cta-section h3 { color: #fff !important; font-size: 24px; margin-bottom: 12px; }
.cta-section p { color: rgba(255,255,255,.9) !important; margin-bottom: 20px; }
.cta-section .btn { background: #fff; color: var(--primary); }

/* QR / Contact */
.contact-row {
  display: flex; gap: 24px; flex-wrap: wrap; margin-top: 24px;
}
.contact-card {
  flex: 1; min-width: 200px;
  background: var(--bg-card); border-radius: var(--radius);
  padding: 24px; text-align: center; border: 1px solid var(--border);
}
.contact-card h4 { margin-bottom: 8px; }
.contact-card .big-icon { font-size: 40px; }

/* Back link */
.back-link {
  display: inline-block; margin-bottom: 20px;
  color: var(--text-light); text-decoration: none; font-size: 14px;
}
.back-link:hover { color: var(--primary); }

/* Photo grid (dorm) */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px; margin: 20px 0;
}
.photo-card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 16px; border: 1px solid var(--border); text-align: center;
}
.photo-placeholder {
  width: 100%; height: 180px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 48px; color: #94a3b8; margin-bottom: 10px;
}
.photo-card p { font-size: 13px; margin: 0 !important; }

/* Responsive */
@media (max-width: 768px) {
  .hero h2 { font-size: 26px; }
  .cards-grid { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .trust-stats { flex-direction: column; gap: 16px; }
  .compare-table { font-size: 12px; }
  .compare-table th, .compare-table td { padding: 8px; }
}