/* ===== 湘军风控 · 整站共享样式 ===== */
:root{
  --navy:#0f2c52;
  --navy-2:#16396b;
  --navy-3:#1f4e8c;
  --gold:#c8a45c;
  --gold-d:#a8843f;
  --red:#b8282f;
  --ink:#1d2733;
  --muted:#5b6b80;
  --line:#e3e8f0;
  --bg:#f5f7fb;
  --white:#fff;
  --shadow:0 6px 24px rgba(15,44,82,.08);
  --radius:10px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;
}
a{color:var(--navy);text-decoration:none}
a:hover{color:var(--gold-d)}
img{max-width:100%;display:block}
.container{max-width:1180px;margin:0 auto;padding:0 22px}

/* ===== 顶部条 ===== */
.topbar{background:var(--navy);color:#dbe4f2;font-size:13px;padding:7px 0}
.topbar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.topbar a{color:#fff}
.topbar .phone{color:var(--gold);font-weight:700;letter-spacing:.5px}

/* ===== 导航 ===== */
.nav{background:#fff;box-shadow:0 2px 10px rgba(15,44,82,.06);position:sticky;top:0;z-index:100}
.nav .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand .logo{
  width:46px;height:46px;border-radius:8px;background:linear-gradient(135deg,var(--navy),var(--navy-3));
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:20px;
  font-family:"SimSun","Songti SC",serif;letter-spacing:1px;
}
.brand .name{font-size:22px;font-weight:800;color:var(--navy);letter-spacing:2px}
.brand .sub{font-size:12px;color:var(--muted);letter-spacing:1px}
.menu{display:flex;gap:6px;list-style:none}
.menu a{display:block;padding:10px 16px;font-size:15px;color:var(--ink);border-radius:6px;font-weight:500}
.menu a:hover,.menu a.active{color:var(--navy);background:var(--bg)}
.menu a.active{color:var(--gold-d);font-weight:700}
.burger{display:none;background:none;border:0;font-size:26px;color:var(--navy);cursor:pointer}

/* ===== Hero ===== */
.hero{
  background:
    radial-gradient(1200px 500px at 80% -10%,rgba(200,164,92,.18),transparent 60%),
    linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 55%,var(--navy-3) 100%);
  color:#fff;padding:70px 0 80px;position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-80px;bottom:-80px;width:380px;height:380px;
  border:1px solid rgba(200,164,92,.25);border-radius:50%;
}
.hero .inner{position:relative;z-index:2;max-width:780px}
.hero .tag{
  display:inline-block;padding:6px 14px;border:1px solid rgba(200,164,92,.6);color:var(--gold);
  border-radius:30px;font-size:13px;letter-spacing:2px;margin-bottom:20px;
}
.hero h1{font-size:38px;line-height:1.35;font-weight:800;margin-bottom:18px;letter-spacing:1px}
.hero h1 em{color:var(--gold);font-style:normal}
.hero p{font-size:17px;color:#d6e0f0;margin-bottom:30px}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-block;padding:13px 28px;border-radius:6px;font-weight:700;font-size:15px;
  transition:.2s;cursor:pointer;border:0;
}
.btn-gold{background:var(--gold);color:#fff}
.btn-gold:hover{background:var(--gold-d);color:#fff}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.hero-stats{display:flex;gap:36px;margin-top:42px;flex-wrap:wrap}
.hero-stats .num{font-size:30px;font-weight:800;color:var(--gold)}
.hero-stats .lbl{font-size:13px;color:#c5d2e8}

/* ===== 通用 section ===== */
.section{padding:64px 0}
.section.alt{background:#fff}
.sec-head{text-align:center;margin-bottom:42px}
.sec-head .en{font-size:13px;color:var(--gold-d);letter-spacing:4px;text-transform:uppercase}
.sec-head h2{font-size:30px;color:var(--navy);margin:8px 0 12px;font-weight:800}
.sec-head .desc{color:var(--muted);max-width:720px;margin:0 auto}
.divider{width:60px;height:3px;background:var(--gold);margin:14px auto 0}

/* 业务卡片 */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  transition:.25s;box-shadow:var(--shadow);
}
.card:hover{transform:translateY(-4px);border-color:var(--gold)}
.card .icon{
  width:52px;height:52px;border-radius:10px;background:var(--bg);color:var(--navy);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.card .icon svg{width:26px;height:26px}
.card h3{font-size:19px;color:var(--navy);margin-bottom:10px;font-weight:700}
.card p{color:var(--muted);font-size:14.5px;margin-bottom:14px}
.card .more{color:var(--gold-d);font-weight:600;font-size:14px}

/* 痛点/步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{background:#fff;border-radius:var(--radius);padding:24px;border-top:3px solid var(--gold)}
.step .n{
  display:inline-block;width:34px;height:34px;line-height:34px;text-align:center;border-radius:50%;
  background:var(--navy);color:#fff;font-weight:700;margin-bottom:12px;
}
.step h4{color:var(--navy);margin-bottom:8px;font-size:16px}
.step p{color:var(--muted);font-size:14px}

/* 适用人群 */
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tags span{
  background:#fff;border:1px solid var(--line);padding:8px 16px;border-radius:30px;font-size:14px;
  color:var(--navy);
}

/* CTA bar */
.cta-bar{
  background:linear-gradient(135deg,var(--navy),var(--navy-3));color:#fff;padding:40px 0;
}
.cta-bar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
.cta-bar h3{font-size:22px}
.cta-bar p{color:#c5d2e8;font-size:14px;margin-top:4px}
.cta-bar .phone-big{font-size:28px;font-weight:800;color:var(--gold);letter-spacing:1px}

/* 页脚 */
.footer{background:#0a1f3d;color:#9fb0cc;padding:50px 0 0;font-size:14px}
.footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer h4{color:#fff;font-size:16px;margin-bottom:14px}
.footer ul{list-style:none}
.footer li{margin-bottom:8px}
.footer a{color:#9fb0cc}
.footer a:hover{color:var(--gold)}
.footer .bottom{padding:18px 0;text-align:center;font-size:12px;color:#7a8ba8}

/* 悬浮电话 */
.float-call{
  position:fixed;right:18px;bottom:90px;z-index:99;
  background:var(--red);color:#fff;padding:12px 16px;border-radius:40px;
  box-shadow:0 8px 24px rgba(184,40,47,.4);font-weight:700;font-size:14px;
  display:flex;align-items:center;gap:8px;
}
.float-call:hover{color:#fff;background:#9c1f26}

/* 面包屑 */
.crumb{background:#fff;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted);padding:12px 0}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--gold-d)}

/* 内页头 */
.page-head{background:linear-gradient(135deg,var(--navy),var(--navy-3));color:#fff;padding:50px 0;position:relative;overflow:hidden}
.page-head h1{font-size:32px;font-weight:800;position:relative;z-index:1}
.page-head p{color:#c5d2e8;margin-top:8px;max-width:760px;position:relative;z-index:1}
.page-head.bg{background-size:cover;background-position:center}
.page-head.bg::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,44,82,.93),rgba(31,78,140,.85))}

/* 图文卡片 */
.img-card{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#fff}
.img-card img{width:100%;height:220px;object-fit:cover}
.img-card .body{padding:22px}
.img-card h3{color:var(--navy);margin-bottom:8px;font-size:18px}
.img-card p{color:var(--muted);font-size:14px}

/* 优势卖点 */
.advantage{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.adv-item{text-align:center;padding:30px 18px;background:#fff;border-radius:var(--radius);border-top:3px solid var(--gold)}
.adv-item .num{font-size:38px;font-weight:900;color:var(--gold);line-height:1}
.adv-item h4{color:var(--navy);margin:12px 0 8px;font-size:16px}
.adv-item p{color:var(--muted);font-size:13.5px}

/* FAQ 折叠 */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:8px;margin-bottom:12px;overflow:hidden}
.faq-item summary{
  padding:18px 22px;cursor:pointer;font-weight:600;color:var(--navy);font-size:16px;
  list-style:none;display:flex;justify-content:space-between;align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;color:var(--gold);font-weight:400;transition:.2s}
.faq-item[open] summary::after{content:"−"}
.faq-item .faq-body{padding:0 22px 18px;color:#3a4a5e;font-size:15px;line-height:1.8}

/* 相关阅读 */
.related{margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.related h3{color:var(--navy);font-size:18px;margin-bottom:14px}
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.related-grid a{
  background:var(--bg);padding:14px 18px;border-radius:8px;color:var(--navy);
  font-size:14px;font-weight:500;border-left:3px solid var(--gold);
}
.related-grid a:hover{background:#fff}

/* 文章正文 */
.article{background:#fff;border-radius:var(--radius);padding:40px;box-shadow:var(--shadow)}
.article h2{color:var(--navy);font-size:22px;margin:28px 0 12px;padding-left:12px;border-left:4px solid var(--gold)}
.article h3{color:var(--navy-2);font-size:18px;margin:20px 0 8px}
.article p{margin-bottom:14px;color:#2a3747;text-indent:2em}
.article ul,.article ol{margin:0 0 14px 22px;color:#2a3747}
.article li{margin-bottom:6px}
.article .law{
  background:var(--bg);border-left:3px solid var(--navy-3);padding:14px 18px;border-radius:0 6px 6px 0;
  color:var(--navy-2);font-size:14.5px;margin:14px 0;
}
.kv-table{width:100%;border-collapse:collapse;margin:14px 0}
.kv-table th,.kv-table td{border:1px solid var(--line);padding:10px 12px;text-align:left;font-size:14.5px}
.kv-table th{background:var(--navy);color:#fff}

/* 案例 */
.case-card{background:#fff;border-radius:var(--radius);padding:24px;border:1px solid var(--line);box-shadow:var(--shadow)}
.case-card .tag{display:inline-block;background:#fdf3e0;color:var(--gold-d);font-size:12px;padding:3px 10px;border-radius:4px;margin-bottom:10px}
.case-card h3{font-size:17px;color:var(--navy);margin-bottom:8px}
.case-card p{color:var(--muted);font-size:14px}

/* 表单 */
.form-box{background:#fff;padding:32px;border-radius:var(--radius);box-shadow:var(--shadow)}
.form-box .row{margin-bottom:16px}
.form-box label{display:block;font-size:14px;color:var(--navy);margin-bottom:6px;font-weight:600}
.form-box input,.form-box textarea,.form-box select{
  width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:6px;font-size:15px;font-family:inherit;
}
.form-box input:focus,.form-box textarea:focus{outline:0;border-color:var(--gold)}

/* 响应式 */
@media(max-width:960px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer .cols{grid-template-columns:1fr 1fr}
  .hero h1{font-size:28px}
  .menu{
    position:fixed;top:72px;right:0;background:#fff;width:240px;height:calc(100vh - 72px);
    flex-direction:column;padding:20px;box-shadow:-4px 0 20px rgba(0,0,0,.1);
    transform:translateX(100%);transition:.25s;
  }
  .menu.open{transform:translateX(0)}
  .burger{display:block}
}
@media(max-width:600px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);gap:12px}
  .steps{grid-template-columns:1fr}
  .footer .cols{grid-template-columns:1fr}
  .topbar{font-size:14px;padding:10px 0}
  .article{padding:22px}
  .cta-bar .phone-big{font-size:22px}
  input,textarea,select{font-size:16px !important}
  .burger{width:44px;height:44px;font-size:24px;display:flex;align-items:center;justify-content:center}
  .btn{min-height:48px;display:inline-flex;align-items:center;justify-content:center}
  .float-call{padding:14px 18px;font-size:15px;bottom:20px;right:14px}
  .menu a{padding:14px 16px;font-size:16px}
}