:root{
  --primary:#1a3a6b;
  --primary-dark:#12294d;
  --accent:#c9a24b;
  --bg:#f5f6f8;
  --white:#fff;
  --text:#333;
  --muted:#6b7280;
  --radius:10px;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.8}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{max-width:1150px;margin:0 auto;padding:0 20px}

/* 顶条 */
.topbar{background:var(--primary-dark);color:#cbd5e1;font-size:13px;padding:6px 0}
.topbar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:6px}

/* 头部导航 */
.site-header{background:var(--white);box-shadow:0 2px 8px rgba(0,0,0,.06);position:sticky;top:0;z-index:100}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;max-width:1150px;margin:0 auto;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:56px;width:auto}
.brand .name{font-size:20px;font-weight:700;color:var(--primary);letter-spacing:1px}
.brand .name small{display:block;font-size:11px;font-weight:400;color:var(--muted);letter-spacing:0}
.nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav a{padding:8px 13px;font-size:15px;color:#374151;border-radius:6px;transition:.2s}
.nav a:hover,.nav a.active{color:var(--white);background:var(--primary)}
.nav a.btn-weiquan{background:#b91c1c;color:#fff;font-weight:600;margin-left:8px}
.nav a.btn-weiquan:hover{background:#991b1b}

/* Banner */
.banner{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 60%,#2b5797 100%);color:#fff;padding:90px 0 100px;position:relative;overflow:hidden}
.banner::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:rgba(255,255,255,.05)}
.banner::before{content:"";position:absolute;left:-80px;bottom:-160px;width:300px;height:300px;border-radius:50%;background:rgba(255,255,255,.04)}
.banner .container{position:relative;z-index:2}
.banner .logo-blue{height:90px;margin-bottom:20px;filter:invert(1) brightness(2)}
.banner h1{font-size:40px;letter-spacing:3px;margin-bottom:14px}
.banner .slogan{font-size:19px;color:#dbe6f5;margin-bottom:10px}
.banner .sub{font-size:15px;color:#aab8d0;max-width:640px;margin-bottom:32px}
.banner .btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 34px;border-radius:6px;font-size:16px;font-weight:600;transition:.2s;cursor:pointer;border:none}
.btn-gold{background:var(--accent);color:#fff}
.btn-gold:hover{background:#b58c3a}
.btn-outline{border:1.5px solid rgba(255,255,255,.7);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12)}

/* 页面Banner */
.page-banner{background:linear-gradient(120deg,var(--primary-dark),var(--primary));color:#fff;padding:46px 0}
.page-banner h1{font-size:28px;letter-spacing:2px}
.page-banner p{color:#b9c7dd;font-size:14px;margin-top:4px}

/* 核心卡片区 */
.section{padding:56px 0}
.section-title{text-align:center;margin-bottom:36px}
.section-title h2{font-size:26px;color:var(--primary);position:relative;display:inline-block;padding-bottom:12px}
.section-title h2::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:0;width:52px;height:3px;background:var(--accent);border-radius:2px}
.section-title p{color:var(--muted);font-size:14px;margin-top:8px}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{background:var(--white);border-radius:var(--radius);padding:32px 24px;text-align:center;box-shadow:0 3px 12px rgba(0,0,0,.05);transition:.25s;border-top:3px solid transparent}
.card:hover{transform:translateY(-6px);box-shadow:0 10px 24px rgba(26,58,107,.14);border-top-color:var(--accent)}
.card .icon{width:64px;height:64px;margin:0 auto 16px;border-radius:50%;background:#eef2f9;display:flex;align-items:center;justify-content:center;font-size:28px;color:var(--primary)}
.card h3{font-size:18px;color:var(--primary);margin-bottom:10px}
.card p{font-size:14px;color:var(--muted)}
.card a.more{display:inline-block;margin-top:12px;font-size:13px;color:var(--accent)}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.news-box{background:var(--white);border-radius:var(--radius);padding:28px;box-shadow:0 3px 12px rgba(0,0,0,.05)}
.news-box h3{color:var(--primary);font-size:19px;padding-bottom:12px;border-bottom:2px solid #eef0f4;margin-bottom:6px}
.news-item{display:block;padding:14px 0;border-bottom:1px dashed #e5e7eb}
.news-item:last-child{border-bottom:none}
.news-item h4{font-size:15px;font-weight:600;color:#374151;transition:.2s}
.news-item:hover h4{color:var(--primary)}
.news-item p{font-size:13px;color:var(--muted);margin-top:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item .date{font-size:12px;color:#9ca3af}

/* 会员之家 */
.members{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.member{background:var(--white);border-radius:var(--radius);padding:24px 18px;text-align:center;box-shadow:0 3px 10px rgba(0,0,0,.05)}
.member .logo{width:72px;height:72px;margin:0 auto 12px;border-radius:50%;background:#eef2f9;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;color:var(--primary)}
.member h4{font-size:16px;color:var(--primary)}
.member p{font-size:12.5px;color:var(--muted);margin-top:6px}

/* 维权专区 */
.weiquan-section{background:linear-gradient(135deg,var(--primary) 0%,#2b5797 100%);color:#fff}
.weiquan-section .section-title h2{color:#fff}
.weiquan-section .section-title p{color:#c3d2e8}
.wq-btns{display:flex;justify-content:center;gap:18px;flex-wrap:wrap}
.wq-btns .btn{background:#fff;color:var(--primary)}
.wq-btns .btn:hover{background:var(--accent);color:#fff}
.wq-note{text-align:center;margin-top:22px;font-size:13px;color:#c3d2e8}

/* 联系板块 */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:32px;background:var(--white);border-radius:var(--radius);padding:36px;box-shadow:0 3px 12px rgba(0,0,0,.05)}
.contact-info li{list-style:none;padding:10px 0;font-size:15px;border-bottom:1px dashed #e5e7eb}
.contact-info li:last-child{border:none}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:14px;margin-bottom:6px;color:#374151}
.form-group input,.form-group textarea{width:100%;padding:11px 14px;border:1px solid #d1d5db;border-radius:6px;font-size:14px;font-family:inherit}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--primary)}
.form-row{display:flex;gap:12px}
.form-row .form-group{flex:1}
.captcha{display:flex;gap:10px;align-items:center}
.captcha input{flex:1}
#captchaCode{background:var(--primary);color:#fff;padding:10px 16px;border-radius:6px;letter-spacing:4px;font-weight:700;cursor:pointer;user-select:none}
.form-msg{color:#16a34a;font-size:13px;margin-top:8px;min-height:18px}

/* 页脚 */
.site-footer{background:var(--primary-dark);color:#9fb0cc;padding:44px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px;padding-bottom:30px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:14px}
.site-footer a:hover{color:#fff}
.footer-links li{list-style:none;padding:4px 0}
.qr{display:flex;gap:24px}
.qr img{width:96px;height:96px;background:#fff;border-radius:6px;padding:5px}
.qr p{text-align:center;font-size:12px;margin-top:6px}
.copyright{border-top:1px solid rgba(255,255,255,.1);padding:16px 0;text-align:center;font-size:13px}
.copyright a{color:#9fb0cc}
.copyright a:hover{color:#fff}

/* 子页面 */
.page-body{background:var(--white);border-radius:var(--radius);box-shadow:0 3px 12px rgba(0,0,0,.05);padding:44px;margin:36px 0}
.page-body h2{color:var(--primary);font-size:22px;margin:28px 0 12px;padding-left:12px;border-left:4px solid var(--accent)}
.page-body h2:first-child{margin-top:0}
.page-body p{margin-bottom:12px;color:#4b5563}
.page-body ul{margin:0 0 14px 24px;color:#4b5563}
.sub-nav{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:24px}
.sub-nav a{background:#eef2f9;color:var(--primary);padding:7px 18px;border-radius:20px;font-size:14px}
.sub-nav a:hover{background:var(--primary);color:#fff}
.steps li{list-style:none;padding:12px 16px;background:#f6f8fb;border-radius:8px;margin-bottom:10px;display:flex;gap:12px;align-items:flex-start}
.steps .num{flex:none;width:28px;height:28px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}
.article{border-bottom:1px solid #eef0f4;padding:20px 0}
.article:last-child{border:none}
.article h4{color:var(--primary);font-size:17px}
.article .date{font-size:13px;color:#9ca3af;margin:4px 0}
.article p{font-size:14px}

@media (max-width:900px){
  .cards,.members{grid-template-columns:repeat(2,1fr)}
  .news-grid,.contact-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .banner h1{font-size:28px}
  .nav{justify-content:center}
}
@media (max-width:520px){
  .cards,.members{grid-template-columns:1fr}
}