/* 上海页：深色全屏背景Hero + 右侧悬浮表单 + 阴影卡片 */
:root { --sh-primary: #0F2540; --sh-gold: #CEA052; --sh-text: #333; --sh-gray: #F5F7FA; }
body { color: var(--sh-text); background: #fff; }

.sh-header { position: fixed; top: 0; width: 100%; background: rgba(255,255,255,0.95); box-shadow: 0 2px 10px rgba(0,0,0,0.05); z-index: 100; height: 72px; display: flex; align-items: center; }
.sh-header .container { display: flex; justify-content: space-between; align-items: center; }
.sh-brand { font-size: 20px; font-weight: bold; color: var(--sh-primary); display: flex; flex-direction: column; line-height: 1.2; }
.sh-brand small { font-size: 12px; color: var(--sh-gold); font-weight: normal; }
.sh-nav { display: flex; gap: 32px; align-items: center; }
.sh-nav a { font-size: 15px; color: #555; transition: color 0.3s; }
.sh-nav a:hover { color: var(--sh-primary); }
.sh-btn-outline { border: 1px solid var(--sh-primary); color: var(--sh-primary); padding: 8px 24px; border-radius: 20px; transition: all 0.3s; }
.sh-btn-outline:hover { background: var(--sh-primary); color: #fff; }

.sh-hero { min-height: 600px; padding-top: 120px; background: linear-gradient(135deg, rgba(15,37,64,0.9) 0%, rgba(20,55,95,0.8) 100%), url('https://images.unsplash.com/photo-1548248823-1d07c0f1cefd?auto=format&fit=crop&w=1920&q=80') center/cover; position: relative; }
.sh-hero-inner { display: flex; gap: 60px; align-items: center; }
.sh-hero-text { flex: 1; color: #fff; }
.sh-hero-text h1 { font-size: 42px; line-height: 1.3; margin-bottom: 24px; text-shadow: 0 2px 4px rgba(0,0,0,0.3); }
.sh-hero-text h1 span { color: var(--sh-gold); }
.sh-hero-desc { font-size: 18px; color: #E2E8F0; margin-bottom: 40px; }
.sh-stats { display: flex; gap: 40px; }
.sh-stat-item { text-align: left; }
.sh-stat-item b { display: block; font-size: 36px; color: var(--sh-gold); font-family: Impact, serif; }
.sh-stat-item span { font-size: 14px; color: #CBD5E1; }

.sh-form-card { width: 380px; background: #fff; border-radius: 8px; padding: 32px; box-shadow: 0 20px 40px rgba(0,0,0,0.2); position: relative; z-index: 2; }
.sh-form-card h3 { font-size: 20px; color: var(--sh-primary); margin-bottom: 8px; text-align: center; }
.sh-form-card p { font-size: 13px; color: #666; text-align: center; margin-bottom: 24px; }
.sh-input { width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 4px; margin-bottom: 16px; background: #FAFAFA; transition: 0.3s; }
.sh-input:focus { border-color: var(--sh-primary); background: #fff; outline: none; }
.sh-submit { width: 100%; padding: 14px; background: var(--sh-primary); color: #fff; border: none; border-radius: 4px; font-weight: bold; cursor: pointer; transition: 0.3s; }
.sh-submit:hover { background: #0A1A2E; }
.sh-hint { font-size: 12px; color: #999; text-align: center; margin-top: 16px; }

.sh-section { padding: 80px 0; }
.sh-bg-gray { background: var(--sh-gray); }
.sh-title { text-align: center; font-size: 32px; color: var(--sh-primary); margin-bottom: 16px; position: relative; padding-bottom: 16px; }
.sh-title::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 60px; height: 3px; background: var(--sh-gold); }
.sh-subtitle { text-align: center; color: #666; margin-bottom: 48px; font-size: 16px; }

.sh-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.sh-icon-box { text-align: center; padding: 32px 24px; background: #fff; border: 1px solid #eee; transition: 0.3s; border-radius: 4px; }
.sh-icon-box:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0,0,0,0.05); border-color: var(--sh-gold); }
.sh-icon-box .num { font-size: 40px; color: var(--sh-primary); font-weight: bold; margin-bottom: 16px; display: block; }
.sh-icon-box p { color: #555; font-size: 15px; }

.sh-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.sh-card { background: #fff; padding: 32px; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.05); border-top: 4px solid transparent; transition: 0.3s; }
.sh-card:hover { border-top-color: var(--sh-gold); box-shadow: 0 12px 24px rgba(0,0,0,0.08); }
.sh-card h4 { font-size: 20px; color: var(--sh-primary); margin-bottom: 12px; }
.sh-card p { color: #666; font-size: 15px; line-height: 1.8; }

.sh-tag { display: inline-block; padding: 4px 12px; background: rgba(206,160,82,0.1); color: var(--sh-gold); font-size: 13px; border-radius: 20px; margin-bottom: 12px; }

.sh-footer { background: var(--sh-primary); color: #fff; padding: 40px 0; text-align: center; font-size: 14px; }

@media (max-width: 992px) {
  .sh-hero-inner { flex-direction: column; padding-bottom: 40px; }
  .sh-form-card { width: 100%; max-width: 400px; }
  .sh-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .sh-nav { display: none; }
}
@media (max-width: 768px) {
  .sh-grid-4, .sh-grid-2 { grid-template-columns: 1fr; }
  .sh-stats { flex-wrap: wrap; gap: 20px; }
  .sh-hero-text h1 { font-size: 32px; }
}