/* 域备通 - 静态内容站点样式（简洁、响应式、利于SEO） */
:root{
  --brand:#e63946;
  --brand-dark:#c1121f;
  --ink:#1d1d1f;
  --muted:#6b7280;
  --line:#e5e7eb;
  --bg:#ffffff;
  --bg-soft:#f7f8fa;
  --radius:14px;
  --maxw:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:800;font-size:22px;color:var(--brand);display:flex;align-items:center;gap:8px}
.logo .dot{width:10px;height:10px;border-radius:50%;background:var(--brand)}
.nav-links{display:flex;gap:26px;list-style:none;flex-wrap:wrap}
.nav-links a{color:var(--ink);font-weight:600}
.nav-links a.active,.nav-links a:hover{color:var(--brand);text-decoration:none}
.nav-cta{background:var(--brand);color:#fff;padding:9px 18px;border-radius:999px;font-weight:700}
.nav-cta:hover{background:var(--brand-dark);text-decoration:none;color:#fff}

/* 区块通用 */
section{padding:64px 0}
.section-soft{background:var(--bg-soft)}
.section-head{text-align:center;margin-bottom:40px}
.section-head h2{font-size:30px;margin-bottom:10px}
.section-head p{color:var(--muted);max-width:640px;margin:0 auto}

/* Hero */
.hero{background:linear-gradient(135deg,#fff 0%,#fff5f5 100%);padding:80px 0}
.hero h1{font-size:42px;line-height:1.25;margin-bottom:18px}
.hero p.lead{font-size:19px;color:var(--muted);max-width:640px;margin-bottom:28px}
.hero .btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 28px;border-radius:999px;font-weight:700}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;text-decoration:none}
.btn-ghost{border:2px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);text-decoration:none}

/* 卡片网格 */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.2s}
.card:hover{box-shadow:0 8px 28px rgba(0,0,0,.07);transform:translateY(-2px)}
.card .ico{font-size:30px;margin-bottom:12px}
.card h3{font-size:19px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}
.card .price{font-size:30px;font-weight:800;color:var(--brand);margin:6px 0 14px}
.card .price small{font-size:14px;color:var(--muted);font-weight:500}
.tag{display:inline-block;background:#ffe3e3;color:var(--brand-dark);font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;margin-bottom:10px}
.feature-list{list-style:none;margin-top:12px}
.feature-list li{padding:6px 0 6px 22px;position:relative;color:var(--muted);font-size:15px}
.feature-list li::before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:800}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-align:center}
.step .num{width:38px;height:38px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 12px}
.step h4{font-size:16px;margin-bottom:6px}
.step p{color:var(--muted);font-size:14px}

/* 省份 */
.prov-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.prov{border:1px solid var(--line);border-radius:10px;padding:12px 14px;background:#fff;color:var(--ink);font-weight:600;display:flex;justify-content:space-between;align-items:center}
.prov:hover{border-color:var(--brand);text-decoration:none;color:var(--brand)}
.prov span{font-size:12px;color:var(--muted);font-weight:500}

/* 文章列表 */
.news-list{display:grid;gap:18px}
.news-item{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;align-items:flex-start}
.news-item .date{color:var(--muted);font-size:13px;white-space:nowrap}
.news-item h3{font-size:18px;margin-bottom:6px}
.news-item p{color:var(--muted);font-size:14px}

/* 文章页 */
.article{max-width:760px;margin:0 auto}
.article h1{font-size:34px;margin-bottom:14px;line-height:1.3}
.article .meta{color:var(--muted);font-size:14px;margin-bottom:26px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.article h2{font-size:24px;margin:32px 0 12px}
.article p{margin-bottom:16px;color:#374151}
.article ul{margin:0 0 16px 22px}
.article ul li{margin-bottom:8px}

/* 表单 */
.form-row{margin-bottom:16px}
.form-row label{display:block;font-weight:600;margin-bottom:6px}
.form-row input,.form-row textarea{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit}
.form-row input:focus,.form-row textarea:focus{outline:none;border-color:var(--brand)}
.note{background:#fff8e6;border:1px solid #ffe08a;color:#7a5b00;padding:14px 16px;border-radius:10px;font-size:14px;margin:18px 0}

/* 页脚 */
.site-footer{background:#11161d;color:#aab2bd;padding:48px 0 28px}
.site-footer a{color:#cbd5e1}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.site-footer ul{list-style:none}
.site-footer ul li{margin-bottom:8px;font-size:14px}
.foot-bottom{border-top:1px solid #232b36;margin-top:30px;padding-top:18px;font-size:13px;text-align:center;color:#7b8494}

/* 响应式 */
@media(max-width:900px){
  .grid-3,.grid-2{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .prov-grid{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:32px}
}
@media(max-width:560px){
  .nav-links{display:none}
  .steps,.prov-grid,.foot-grid{grid-template-columns:1fr}
}