:root{--primary:#c0392b;--primary-dark:#922b21;--gray-100:#f8f9fa;--gray-200:#e9ecef;--gray-300:#dee2e6;--gray-500:#6c757d;--gray-700:#343a40;--dark:#1a1a2e;--radius:10px}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:#fff;color:var(--gray-700);line-height:1.7}
a{text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{background:var(--dark);color:#fff;padding:18px 0;position:sticky;top:0;z-index:100}
.site-header .container{display:flex;justify-content:space-between;align-items:center}
.site-header .logo{font-size:20px;font-weight:700;color:#fff}
.site-header .logo span{color:#d4a017}
.site-header .phone{background:var(--primary);color:#fff;padding:6px 16px;border-radius:20px;font-weight:600}

/* Hero */
.hero{background:linear-gradient(135deg,var(--dark),#2d2d5e,var(--primary-dark));color:#fff;text-align:center;padding:64px 0 56px}
.hero h1{font-size:34px;font-weight:800;margin-bottom:14px}
.hero h1 span{color:#d4a017}
.hero p{font-size:16px;opacity:.85;max-width:680px;margin:0 auto 28px}
.hero-stats{display:flex;justify-content:center;gap:36px;flex-wrap:wrap}
.hero-stat .num{font-size:30px;font-weight:800;color:#d4a017}
.hero-stat .label{font-size:13px;opacity:.75}

/* Section */
.section{padding:56px 0}
.section-alt{background:var(--gray-100)}
.section-search{padding:52px 0 12px}
.section-cities{padding:20px 0 56px}
.section-title{text-align:center;margin-bottom:28px}
.section-title h2{font-size:24px;color:var(--dark);margin-bottom:6px}
.section-title p{color:var(--gray-500);font-size:14px}

/* Search */
.search-bar{max-width:500px;margin:0 auto;position:relative}
.search-bar input{width:100%;padding:13px 20px 13px 46px;border:2px solid var(--gray-200);border-radius:30px;font-size:15px;outline:none;transition:border-color .2s}
.search-bar input:focus{border-color:var(--primary)}
.search-bar .search-icon{position:absolute;left:18px;top:50%;transform:translateY(-50%);color:var(--gray-500)}

/* City List */
.city-wrapper{max-width:1140px;margin:0 auto;padding:40px 20px 0}
.province-list{display:flex;flex-wrap:wrap;gap:24px;margin-bottom:32px}
.province-list:last-child{margin-bottom:0}
.province-card{flex:0 0 calc(33.333% - 16px);background:#fff;border-radius:var(--radius);padding:24px;box-shadow:0 2px 10px rgba(0,0,0,.07);border-top:3px solid var(--gray-300);transition:box-shadow .25s,transform .25s}
.province-card:hover{box-shadow:0 4px 16px rgba(0,0,0,.12);transform:translateY(-2px)}
.province-card.has-active{border-top-color:var(--primary)}
.province-card h3{font-size:17px;font-weight:600;margin-bottom:18px;color:var(--dark)}
.province-card h3 span{font-size:12px;color:var(--gray-500);font-weight:400;margin-left:8px}
.city-list{display:grid;grid-template-columns:repeat(4, 1fr);gap:10px}
.city-btn{display:block;text-align:center;padding:7px 0;border-radius:6px;font-size:14px;font-weight:500}
.city-btn.active{background:var(--primary);color:#fff}
.city-btn.active:hover{background:var(--primary-dark)}
.city-btn.disabled{background:var(--gray-100);color:var(--gray-500);border:1px dashed var(--gray-300);cursor:not-allowed}
.city-legend{display:flex;justify-content:center;gap:24px;margin-bottom:18px;font-size:14px;color:var(--gray-700)}.legend-item{display:inline-flex;align-items:center;gap:8px}.legend-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.legend-red{background:var(--primary)}.legend-gray{background:var(--gray-300)}

/* Service */
.service-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.service-card{background:#fff;border-radius:var(--radius);padding:26px 22px;text-align:center;box-shadow:0 2px 10px rgba(0,0,0,.07);border-top:3px solid transparent;transition:border-color .25s,box-shadow .25s,transform .25s}
.service-card:hover{border-top-color:var(--primary);box-shadow:0 4px 16px rgba(0,0,0,.1);transform:translateY(-2px)}
.service-card .icon{width:54px;height:54px;border-radius:50%;background:#fdf2f0;display:inline-flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px}
.service-card h3{font-size:16px;margin-bottom:10px;color:var(--dark)}
.service-card p{font-size:14px;color:var(--gray-500)}

/* Profile */
.profile-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.profile-card{background:#fff;border-radius:var(--radius);padding:22px 18px;text-align:center;border:1px solid var(--gray-200);transition:box-shadow .25s,transform .25s}
.profile-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.08);transform:translateY(-2px)}
.profile-card .emoji{font-size:30px;margin-bottom:10px}
.profile-card h4{font-size:15px;margin-bottom:6px;color:var(--dark)}
.profile-card p{font-size:13px;color:var(--gray-500)}

/* Tag Cloud */
.tag-cloud{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;max-width:900px;margin:0 auto}
.tag-cloud a{display:inline-block;padding:8px 18px;background:#fff;border:1px solid var(--gray-200);border-radius:20px;font-size:14px;color:var(--gray-700);transition:all .2s}
.tag-cloud a:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.tag-cloud a.size-lg{font-size:16px;font-weight:600;padding:10px 22px}
.tag-cloud a.size-xl{font-size:18px;font-weight:700;padding:12px 26px;background:#fdf2f0;color:var(--primary);border-color:var(--primary)}

/* CTA */
.cta-section{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;text-align:center;padding:56px 0}
.cta-section h2{font-size:24px;margin-bottom:10px}
.cta-section p{font-size:15px;opacity:.85;margin-bottom:26px}
.cta-buttons{display:flex;justify-content:center;align-items:center;gap:16px;flex-wrap:wrap}
.btn-primary{background:#fff;color:var(--primary);padding:14px 34px;border-radius:30px;font-size:15px;font-weight:600;border:none;cursor:pointer;box-shadow:0 4px 14px rgba(0,0,0,.15);transition:all .25s}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.2)}
.btn-secondary{background:rgba(255,255,255,.12);color:#fff;padding:13px 30px;border-radius:30px;font-size:15px;font-weight:600;border:2px solid rgba(255,255,255,.65);cursor:pointer;backdrop-filter:blur(4px);transition:all .25s}
.btn-secondary:hover{background:rgba(255,255,255,.25);border-color:#fff}

/* Footer */
.site-footer{background:var(--dark);color:rgba(255,255,255,.7);padding:50px 0 24px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-grid h5{color:#fff;margin-bottom:14px;font-size:15px}
.footer-grid ul{list-style:none;padding:0}
.footer-grid ul li{margin-bottom:8px;line-height:1.8}
.footer-grid ul li a{color:rgba(255,255,255,.6);font-size:13px}
.footer-grid ul li a:hover{color:#d4a017}
.footer-brand .brand-name{font-size:18px;font-weight:700;color:#fff}
.footer-brand .brand-name span{color:#d4a017}
.footer-brand p{font-size:13px;line-height:1.8;color:rgba(255,255,255,.55);margin-top:10px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:12px;color:rgba(255,255,255,.4)}
.footer-bottom a{color:rgba(255,255,255,.5);margin:0 8px}

/* Back to Top */
.back-to-top{position:fixed;bottom:30px;right:30px;width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;border:none;font-size:20px;cursor:pointer;display:none;align-items:center;justify-content:center;z-index:99;box-shadow:0 4px 12px rgba(0,0,0,.2);transition:opacity .25s}
.back-to-top:hover{opacity:.85}

/* ===== 平板 (≤768px) ===== */
@media(max-width:768px){
  .container{padding:0 16px}
  .hero{padding:44px 0 40px}
  .hero h1{font-size:26px}
  .hero p{font-size:14px;margin-bottom:22px}
  .hero-stats{flex-direction:column;align-items:center;gap:14px}
  .hero-stat .num{font-size:26px}
  .section{padding:40px 0}
  .section-search{padding:36px 0 8px}
  .section-cities{padding:16px 0 40px}
  .section-title{margin-bottom:22px}
  .section-title h2{font-size:22px}
  .city-wrapper{padding:32px 16px 0}
  .city-legend{gap:16px;margin-bottom:15px;font-size:13px}
  .province-list{gap:16px;margin-bottom:20px}
  .province-card{flex:0 0 100%;padding:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .tag-cloud{gap:10px 12px;padding:0 10px}
  .tag-cloud a{font-size:14px;padding:7px 16px}
  .cta-section{padding:44px 0}
  .cta-buttons{gap:14px;max-width:420px;margin:0 auto}
  .btn-primary,.btn-secondary{padding:13px 24px;font-size:15px}
}

/* ===== 手机 (≤480px) ===== */
@media(max-width:480px){
  .container{padding:0 14px}
  .hero{padding:36px 0 32px}
  .hero h1{font-size:22px}
  .hero p{font-size:13px;margin-bottom:18px}
  .hero-stats{gap:10px}
  .hero-stat .num{font-size:22px}
  .hero-stat .label{font-size:12px}
  .section{padding:32px 0}
  .section-search{padding:28px 0 6px}
  .section-cities{padding:12px 0 32px}
  .section-title{margin-bottom:18px}
  .section-title h2{font-size:20px}
  .city-wrapper{padding:24px 14px 0}
  .city-legend{flex-direction:column;align-items:center;gap:10px;margin-bottom:12px;font-size:13px}
  .province-list{gap:12px;margin-bottom:16px}
  .province-card{padding:16px 14px}
  .province-card h3{font-size:16px;margin-bottom:14px}
  .city-btn{padding:6px 12px;font-size:13px}
  .footer-grid{grid-template-columns:1fr;gap:20px}
  .tag-cloud{gap:10px 8px}
  .tag-cloud a{font-size:13px;padding:6px 14px}
  .cta-section{padding:36px 0}
  .cta-buttons{flex-direction:column;width:100%;max-width:280px;margin:0 auto;gap:12px}
  .btn-primary,.btn-secondary{width:100%;padding:12px 20px;font-size:14px}
}