/* SEO 静态页样式 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#1f2937;line-height:1.7;background:#f9fafb}
a{color:#1e40af;text-decoration:none}
a:hover{text-decoration:underline}
.seo-header{background:#111827;color:#fff;padding:16px 0}
.seo-wrap{max-width:1100px;margin:0 auto;padding:0 20px}
.seo-logo{font-size:20px;font-weight:800;color:#fff}
.seo-nav{margin-top:10px;display:flex;flex-wrap:wrap;gap:16px}
.seo-nav a{color:#d1d5db;font-size:14px}
.seo-main{min-height:60vh}
.seo-hero{background:linear-gradient(135deg,#1e3a8a,#3730a3,#6d28d9);color:#fff;padding:56px 20px;text-align:center}
.seo-hero h1{font-size:30px;margin-bottom:14px}
.seo-hero p{max-width:760px;margin:0 auto;opacity:.9}
.seo-section{max-width:1100px;margin:0 auto;padding:36px 20px}
.seo-section h2{font-size:24px;margin-bottom:20px;color:#111827;position:relative}
.seo-page-cover{background:linear-gradient(135deg,#111827,#1e3a8a);color:#fff;padding:44px 20px;text-align:center}
.seo-page-cover h1{font-size:28px;margin-bottom:12px}
.seo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}
.seo-card{background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:20px}
.seo-card h3{font-size:17px;margin-bottom:8px}
.seo-card p{font-size:14px;color:#4b5563}
.seo-card-img{width:100%;height:auto;border-radius:8px;margin-bottom:14px;display:block}
.seo-case-img{width:100%;max-width:900px;height:auto;border-radius:12px;margin:0 auto 24px;display:block;box-shadow:0 8px 24px rgba(0,0,0,.08)}
.seo-meta{color:#6b7280;font-size:13px}
.seo-price{color:#dc2626;font-weight:600}
.seo-price strong{font-size:18px}
.seo-content{background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:28px}
.seo-content p{margin-bottom:14px}
.seo-breadcrumb{max-width:1100px;margin:0 auto;padding:18px 20px 0;font-size:13px;color:#6b7280}
.seo-breadcrumb a{color:#1d4ed8}
.seo-footer{background:#111827;color:#9ca3af;padding:28px 0;text-align:center;font-size:13px;margin-top:40px}
.seo-footer a{color:#d1d5db}
.city-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px}