/* ===== 全局重置与基础 ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:#1a1a1a;background:#f5f6f8;line-height:1.7;font-size:16px;
}
a{color:#0c2754;text-decoration:none;transition:color .2s}
a:hover{color:#1a4a8a}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{color:#0c2754;font-weight:700;line-height:1.35}
h1{font-size:2rem}
h2{font-size:1.6rem;margin-bottom:1rem}
h3{font-size:1.25rem;margin-bottom:.75rem}
p{margin-bottom:1rem}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== 顶部导航 ===== */
.top-bar{background:#081a3a;color:#c8d4e8;font-size:.85rem;padding:6px 0}
.top-bar .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px}
.top-bar span{display:inline-flex;align-items:center;gap:4px}
.navbar{background:#0c2754;position:sticky;top:0;z-index:100;box-shadow:0 2px 12px rgba(0,0,0,.15)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{color:#fff;font-size:1.25rem;font-weight:700;letter-spacing:1px;display:flex;align-items:center;gap:10px}
.logo svg{flex-shrink:0}
.logo small{display:block;font-size:.7rem;font-weight:400;color:#9db4d8;letter-spacing:0}
.nav-links{display:flex;gap:2px}
.nav-links a{color:#dce6f5;padding:10px 14px;font-size:.95rem;border-radius:4px;white-space:nowrap}
.nav-links a:hover,.nav-links a.active{background:#163d7a;color:#fff}
.nav-toggle{display:none;background:none;border:none;color:#fff;cursor:pointer;padding:8px}
.nav-toggle svg{width:26px;height:26px}

/* ===== Banner ===== */
.banner{
  background:linear-gradient(135deg,#0c2754 0%,#143d7a 55%,#1a4a8a 100%);
  color:#fff;padding:70px 0 60px;position:relative;overflow:hidden;
}
.banner::after{
  content:"";position:absolute;right:-80px;top:-80px;width:380px;height:380px;
  border:1px solid rgba(255,255,255,.08);border-radius:50%;
}
.banner::before{
  content:"";position:absolute;right:60px;bottom:-120px;width:280px;height:280px;
  border:1px solid rgba(255,255,255,.06);border-radius:50%;
}
.banner .container{position:relative;z-index:2}
.banner h1{color:#fff;font-size:2.4rem;margin-bottom:14px;max-width:720px}
.banner .subtitle{font-size:1.15rem;color:#c8d8f0;max-width:680px;margin-bottom:24px}
.banner .btn-group{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 28px;border-radius:4px;font-size:1rem;font-weight:600;cursor:pointer;border:none;transition:all .2s}
.btn-primary{background:#d4a017;color:#0c2754}
.btn-primary:hover{background:#e6b428;color:#0c2754}
.btn-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.5)}
.btn-outline:hover{background:rgba(255,255,255,.12);color:#fff}

/* ===== 警示条 ===== */
.warning-bar{background:#fff3cd;border-bottom:1px solid #e6c860;padding:12px 0}
.warning-bar .container{display:flex;align-items:center;gap:10px;color:#7a5a00;font-size:.95rem}
.warning-bar .warn-icon{font-size:1.2rem;flex-shrink:0}
.warning-block{
  background:#fff8e1;border:1px solid #f0d080;border-left:4px solid #d4a017;
  padding:16px 20px;border-radius:6px;color:#6b5000;font-size:.92rem;margin:20px 0;
}
.warning-block strong{color:#8a6500}

/* ===== 通用区块 ===== */
.section{padding:56px 0}
.section-alt{background:#fff}
.section-gray{background:#eef1f6}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:1.8rem;margin-bottom:10px}
.section-title p{color:#5a6a80;max-width:680px;margin:0 auto}
.section-title .line{width:50px;height:3px;background:#d4a017;margin:14px auto 0}

/* ===== 卡片网格 ===== */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-5{grid-template-columns:repeat(5,1fr)}
.card{
  background:#fff;border-radius:8px;padding:28px 24px;
  box-shadow:0 2px 10px rgba(12,39,84,.06);border:1px solid #e8ecf2;
  transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(12,39,84,.12)}
.card-icon{
  width:56px;height:56px;border-radius:10px;background:#eaf0fa;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.card-icon svg{width:30px;height:30px;stroke:#0c2754}
.card h3{font-size:1.15rem;margin-bottom:8px}
.card p{color:#5a6a80;font-size:.92rem;flex:1}
.card .card-link{margin-top:14px;color:#0c2754;font-weight:600;font-size:.9rem;display:inline-flex;align-items:center;gap:4px}
.card .card-link:hover{gap:8px}

/* ===== 服务对象 ===== */
.client-item{text-align:center;padding:24px 16px;background:#fff;border-radius:8px;border:1px solid #e8ecf2}
.client-item .ci-icon{
  width:64px;height:64px;margin:0 auto 14px;border-radius:50%;
  background:linear-gradient(135deg,#0c2754,#1a4a8a);
  display:flex;align-items:center;justify-content:center;
}
.client-item .ci-icon svg{width:30px;height:30px;stroke:#fff}
.client-item h4{font-size:1.05rem;margin-bottom:6px}
.client-item p{font-size:.85rem;color:#7a8699;margin:0}

/* ===== 优势 ===== */
.advantage{display:flex;gap:18px;align-items:flex-start}
.adv-num{
  flex-shrink:0;width:48px;height:48px;border-radius:50%;
  background:#0c2754;color:#fff;font-size:1.3rem;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.advantage h3{font-size:1.1rem;margin-bottom:6px}
.advantage p{color:#5a6a80;font-size:.92rem;margin:0}

/* ===== 流程步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.step{text-align:center;padding:24px 16px;background:#fff;border-radius:8px;border:1px solid #e8ecf2;position:relative}
.step-num{
  width:44px;height:44px;border-radius:50%;background:#d4a017;color:#0c2754;
  font-weight:700;font-size:1.2rem;display:flex;align-items:center;justify-content:center;
  margin:0 auto 14px;
}
.step h4{font-size:1.05rem;margin-bottom:6px}
.step p{font-size:.85rem;color:#7a8699;margin:0}

/* ===== 案例 ===== */
.case-card{background:#fff;border-radius:8px;overflow:hidden;border:1px solid #e8ecf2;display:flex;flex-direction:column}
.case-header{
  background:linear-gradient(135deg,#0c2754,#1a4a8a);color:#fff;padding:20px 24px;
}
.case-header .case-tag{display:inline-block;background:rgba(212,160,23,.25);color:#ffd966;font-size:.78rem;padding:3px 10px;border-radius:3px;margin-bottom:8px}
.case-header h3{color:#fff;font-size:1.1rem;margin:0}
.case-body{padding:20px 24px;flex:1}
.case-body dl{font-size:.9rem}
.case-body dt{font-weight:700;color:#0c2754;margin-top:10px}
.case-body dt:first-child{margin-top:0}
.case-body dd{color:#5a6a80;margin-left:0}

/* ===== 文章列表 ===== */
.article-item{
  display:flex;gap:20px;padding:24px;background:#fff;border-radius:8px;
  border:1px solid #e8ecf2;margin-bottom:18px;transition:box-shadow .2s;
}
.article-item:hover{box-shadow:0 4px 16px rgba(12,39,84,.1)}
.article-thumb{
  flex-shrink:0;width:160px;height:110px;border-radius:6px;
  background:linear-gradient(135deg,#0c2754,#1a4a8a);
  display:flex;align-items:center;justify-content:center;
}
.article-thumb svg{width:40px;height:40px;stroke:rgba(255,255,255,.5)}
.article-meta{font-size:.82rem;color:#9aa5b8;margin-bottom:6px}
.article-meta span{margin-right:14px}
.article-item h3{font-size:1.1rem;margin-bottom:8px}
.article-item h3 a{color:#0c2754}
.article-item p{font-size:.9rem;color:#5a6a80;margin:0}

/* ===== 正文页 ===== */
.page-header{
  background:linear-gradient(135deg,#0c2754,#143d7a);color:#fff;padding:48px 0 40px;
}
.page-header h1{color:#fff;font-size:1.8rem;margin-bottom:8px}
.breadcrumb{font-size:.85rem;color:#9db4d8}
.breadcrumb a{color:#c8d8f0}
.breadcrumb a:hover{color:#fff}

.layout{display:grid;grid-template-columns:1fr 300px;gap:30px;padding:40px 0}
.content-main{background:#fff;border-radius:8px;padding:36px 40px;border:1px solid #e8ecf2}
.content-main h1{font-size:1.6rem;margin-bottom:20px;padding-bottom:14px;border-bottom:2px solid #e8ecf2}
.content-main h2{font-size:1.35rem;margin:28px 0 12px;padding-left:12px;border-left:4px solid #d4a017}
.content-main h3{font-size:1.12rem;margin:20px 0 8px;color:#143d7a}
.content-main p{color:#333;margin-bottom:14px}
.content-main ul,.content-main ol{margin:0 0 14px 22px}
.content-main ul{list-style:disc}
.content-main ol{list-style:decimal}
.content-main li{margin-bottom:6px;color:#333}
.content-main strong{color:#0c2754}

.sidebar{}
.side-box{background:#fff;border-radius:8px;padding:22px;border:1px solid #e8ecf2;margin-bottom:22px}
.side-box h4{font-size:1.05rem;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid #e8ecf2}
.side-nav a{display:block;padding:10px 0;color:#333;font-size:.92rem;border-bottom:1px dashed #e8ecf2}
.side-nav a:last-child{border-bottom:none}
.side-nav a:hover,.side-nav a.active{color:#0c2754;font-weight:600;padding-left:6px}
.side-contact{text-align:center;background:linear-gradient(135deg,#0c2754,#1a4a8a);color:#fff;border:none}
.side-contact h4{color:#fff;border-bottom-color:rgba(255,255,255,.2)}
.side-contact p{font-size:.9rem;color:#c8d8f0;margin-bottom:14px}
.side-contact .tel{font-size:1.4rem;font-weight:700;color:#ffd966;display:block;margin-bottom:14px}
.side-contact .btn{width:100%}

/* FAQ */
.faq-item{background:#fff;border:1px solid #e8ecf2;border-radius:8px;margin-bottom:14px;overflow:hidden}
.faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#0c2754}
.faq-q .faq-icon{flex-shrink:0;width:24px;height:24px;background:#eaf0fa;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:#0c2754;transition:transform .2s}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 24px}
.faq-item.open .faq-a{max-height:600px;padding:0 24px 18px}
.faq-a p{color:#5a6a80;font-size:.92rem;margin:0}

/* 联系页 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.contact-info{background:#fff;border-radius:8px;padding:36px;border:1px solid #e8ecf2}
.contact-info h2{margin-bottom:20px}
.contact-row{display:flex;gap:14px;align-items:flex-start;margin-bottom:20px}
.contact-row .cr-icon{
  flex-shrink:0;width:44px;height:44px;border-radius:8px;background:#eaf0fa;
  display:flex;align-items:center;justify-content:center;
}
.contact-row .cr-icon svg{width:22px;height:22px;stroke:#0c2754}
.contact-row h4{font-size:1rem;margin-bottom:2px}
.contact-row p{color:#5a6a80;margin:0;font-size:.92rem}
.contact-row .tel-big{font-size:1.5rem;font-weight:700;color:#0c2754}
.contact-declare{background:#fff;border-radius:8px;padding:36px;border:1px solid #e8ecf2}

/* ===== 页脚 ===== */
.footer{background:#081a3a;color:#9db4d8;padding:50px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:30px;padding-bottom:36px}
.footer h5{color:#fff;font-size:1rem;margin-bottom:16px}
.footer p,.footer li{font-size:.88rem;margin-bottom:8px}
.footer a{color:#9db4d8}
.footer a:hover{color:#fff}
.footer .footer-logo{font-size:1.2rem;color:#fff;font-weight:700;margin-bottom:12px}
.footer .footer-tel{font-size:1.5rem;color:#ffd966;font-weight:700;margin:10px 0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 0;text-align:center;font-size:.82rem}

/* ===== 移动端底部拨号栏 ===== */
.mobile-call-bar{display:none}

/* ===== 响应式 ===== */
@media(max-width:960px){
  .grid-4,.grid-5{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .layout{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:#0c2754;flex-direction:column;padding:10px 20px;gap:0;box-shadow:0 6px 12px rgba(0,0,0,.2)}
  .nav-links.show{display:flex}
  .nav-links a{padding:14px 10px;border-bottom:1px solid rgba(255,255,255,.08);border-radius:0}
  .nav-toggle{display:block}
  .banner h1{font-size:1.7rem}
  .banner .subtitle{font-size:1rem}
  .article-item{flex-direction:column}
  .article-thumb{width:100%;height:140px}
  .content-main{padding:24px 20px}
  .section{padding:40px 0}
}
@media(max-width:600px){
  .grid-2,.grid-3,.grid-4,.grid-5{grid-template-columns:1fr 1fr;gap:14px}
  .card{padding:20px 16px}
  .card-icon{width:46px;height:46px}
  .card-icon svg{width:24px;height:24px}
  .card h3{font-size:1rem}
  .card p{font-size:.82rem}
  .steps{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .banner{padding:44px 0 40px}
  .banner h1{font-size:1.5rem}
  .top-bar{display:none}
  .mobile-call-bar{
    display:flex;position:fixed;bottom:0;left:0;right:0;z-index:200;
    background:#0c2754;color:#fff;height:56px;align-items:center;justify-content:center;
    gap:10px;font-size:1.1rem;font-weight:700;box-shadow:0 -2px 12px rgba(0,0,0,.2);
  }
  .mobile-call-bar svg{width:24px;height:24px;stroke:#ffd966}
  .mobile-call-bar span{color:#ffd966}
  body{padding-bottom:56px}
  .content-main h1{font-size:1.35rem}
  .section-title h2{font-size:1.4rem}
}