:root{--primary:#1a56db;--dark:#0f1b33;--muted:#5b6472;--border:#e5e8ee;--bg:#fff}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Segoe UI","PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:#1f2430;background:var(--bg);line-height:1.75;font-size:16px;display:flex;flex-direction:column;min-height:100vh;overflow-x:hidden}
.main-content{flex:1}
a{color:var(--primary);text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}

/* header */
.site-header{border-bottom:1px solid var(--border);background:#fff;position:sticky;top:0;z-index:10}
.header-in{display:flex;align-items:center;gap:32px;height:64px}
.logo{font-size:20px;font-weight:800;color:var(--dark);letter-spacing:.5px}
.logo span{color:var(--primary)}
.nav{display:flex;gap:22px;flex:1}
.nav a{color:var(--muted);font-size:15px}
.nav a:hover{color:var(--primary)}
.nav a.active{color:var(--primary);font-weight:700;border-bottom:2px solid var(--primary);padding-bottom:4px}
.hotline{font-weight:700;color:var(--dark);font-size:15px}
.btn-chat{background:var(--primary);color:#fff;font-size:14px;font-weight:600;padding:8px 18px;border-radius:20px;white-space:nowrap;transition:background .2s}
.btn-chat:hover{background:#1341ad;color:#fff}

/* hero */
.hero{padding:96px 0 150px;text-align:center;position:relative;overflow:hidden;background:linear-gradient(135deg,#0f1b33 0%,#16386e 55%,#1a56db 100%);margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw)}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;pointer-events:none}
.hero::before{width:520px;height:520px;left:-160px;top:-180px;background:radial-gradient(circle,rgba(122,165,248,.25) 0%,transparent 70%)}
.hero::after{width:640px;height:640px;right:-200px;bottom:-320px;background:radial-gradient(circle,rgba(255,255,255,.12) 0%,transparent 70%)}
.hero h1{font-size:40px;line-height:1.35;color:#fff;position:relative}
.hero-sub{color:#b8c8ea;margin-top:16px;font-size:16.5px;position:relative}
.hero-cta{margin-top:32px;display:flex;gap:14px;justify-content:center;position:relative}
.hero-cta .btn{background:#fff;color:var(--primary)}
.hero-cta .btn:hover{background:#e8effc}
.hero-cta .btn.ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55)}
.hero-cta .btn.ghost:hover{background:rgba(255,255,255,.12)}
.btn{display:inline-block;background:var(--primary);color:#fff;padding:11px 28px;border-radius:8px;font-size:15.5px}
.btn:hover{background:#1447b8}
.btn.ghost{background:#fff;color:var(--primary);border:1px solid var(--primary)}

/* stats（上浮压住 hero 底边） */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:-80px 0 10px;position:relative;z-index:2}
.stat{background:#fff;border:1px solid var(--border);border-radius:12px;padding:22px;text-align:center;box-shadow:0 10px 30px rgba(15,27,51,.10)}
.stat b{display:block;font-size:26px;color:var(--primary)}
.stat span{color:var(--muted);font-size:13.5px}

/* 五问五答 */
.qa{margin:48px 0}
.qa h2,.cards-sec h2,.list-page h1{font-size:26px;color:var(--dark);margin-bottom:20px}

/* 栏目页大标题：蓝色渐变文字 + 装饰下划线 */
.list-page h1{font-size:27px;margin-bottom:14px;background:linear-gradient(90deg,var(--primary),#4a8bff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.list-page h1::after{content:"";display:block;width:46px;height:3px;border-radius:2px;background:linear-gradient(90deg,var(--primary),#4a8bff);margin-top:8px}
.qa-item{border-left:3px solid var(--primary);background:#f7f9fc;border-radius:0 10px 10px 0;padding:16px 20px;margin-bottom:14px}
.qa-item h3{font-size:17px;color:var(--dark);margin-bottom:6px}
.qa-item p{color:#3a4150;font-size:15px}

/* 卡片 */
.cards-sec{margin:48px 0}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:22px;display:block;color:inherit;transition:.15s}
.card:hover{border-color:var(--primary);box-shadow:0 6px 20px rgba(26,86,219,.08)}
.card h3{font-size:16.5px;color:var(--dark);margin-bottom:8px}
.card p{color:var(--muted);font-size:14px}
.more{margin-top:18px}

/* 列表页 */
.list-page{padding:44px 0 20px}
.list-desc{color:var(--muted);margin:-10px 0 26px}
.post-list{display:flex;flex-direction:column}
.post{display:block;border-bottom:1px solid var(--border);padding:22px 4px;color:inherit}
.post:hover h2{color:var(--primary)}
.post h2{font-size:19px;color:var(--dark);margin-bottom:8px}
.post p{color:var(--muted);font-size:14.5px}
.post-meta{color:#9aa3b0;font-size:13px;margin-top:6px;display:inline-block}
.pager{display:flex;gap:8px;margin-top:26px}
.pager a,.pager b{padding:7px 14px;border:1px solid var(--border);border-radius:7px;font-size:14px;color:var(--muted)}
.pager b{background:var(--primary);color:#fff;border-color:var(--primary)}
.empty{color:var(--muted);padding:30px 0}

/* FAQ 锚点目录 */
html{scroll-behavior:smooth}
.faq-toc{background:#f7f9fc;border:1px solid var(--border);border-radius:12px;padding:18px 22px;margin:0 0 28px;columns:2;column-gap:32px}
.faq-toc h2{font-size:16px;color:var(--dark);margin-bottom:10px;column-span:all}
.faq-toc a{display:block;padding:4px 0;font-size:14.5px;color:var(--muted);break-inside:avoid}
.faq-toc a:hover{color:var(--primary)}
.sec-item[id]{scroll-margin-top:80px}
@media (max-width:640px){.faq-toc{columns:1}}

/* 资质荣誉双栏列表 */
.honor-list{columns:2;column-gap:36px;margin-left:0 !important;list-style:none;padding:0}
.honor-list li{padding:7px 0 7px 24px;position:relative;break-inside:avoid;font-size:15px;color:#2a3140}
.honor-list li::before{content:"";position:absolute;left:4px;top:14px;width:8px;height:8px;border-radius:50%;background:var(--primary)}
@media (max-width:640px){.honor-list{columns:1}}

/* 详情页 */
.detail{padding:44px 0 10px;max-width:820px}
.crumb{font-size:13.5px;color:#9aa3b0;margin-bottom:16px}
.detail h1{font-size:30px;color:var(--dark);line-height:1.4;margin-bottom:12px}
.meta{color:#9aa3b0;font-size:13.5px;margin-bottom:28px;display:flex;gap:16px}
.prose{color:#2a3140}
.prose h1,.prose h2,.prose h3{color:var(--dark);margin:28px 0 12px;line-height:1.45}
.prose h1{font-size:24px}.prose h2{font-size:21px}.prose h3{font-size:18px}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 14px 22px}
.prose table{width:100%;border-collapse:collapse;margin:16px 0}
.prose th,.prose td{border:1px solid var(--border);padding:9px 12px;font-size:14.5px;text-align:left}
.prose th{background:#f7f9fc}
.sec-item{margin:0 0 34px}
.sec-item h2{font-size:20px;color:var(--dark);margin-bottom:10px;padding-left:12px;border-left:3px solid var(--primary)}

/* footer */
.site-footer{background:var(--dark);color:#b8c0cf;margin-top:60px}
.footer-in{display:grid;grid-template-columns:2fr 1fr 1.4fr;gap:30px;padding:44px 20px 30px}
.f-logo{color:#fff;font-size:19px;font-weight:700;margin-bottom:10px}
.f-logo span{color:#7aa5f8}
.f-col p{font-size:13.5px;margin-bottom:8px}
.f-col a{display:block;color:#b8c0cf;font-size:13.5px;margin-bottom:8px}
.f-col a:hover{color:#fff}
.f-col h4{color:#fff;font-size:15px;margin-bottom:12px}
.f-addr{line-height:1.6}
.copyright{border-top:1px solid #26324a;padding:18px 20px;font-size:12.5px;color:#7c8698}

@media (max-width:760px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:1fr}
  .footer-in{grid-template-columns:1fr}
  .nav{display:none}
  .header-in{gap:12px;justify-content:space-between}
  .hotline{font-size:13px}
  .btn-chat{padding:6px 12px;font-size:13px}
  .hero{padding:64px 0 110px}
  .hero h1{font-size:28px}
  .stats{margin:-64px 0 10px}
}