/* =========================================================
   讯灵GEO 代理商官网 · 设计系统 (Blue-Green Corporate)
   纯静态 · 零外部依赖 · 响应式
   ========================================================= */
:root{
  --blue:#0ea5e9;          /* 主品牌蓝 */
  --blue-deep:#2563eb;     /* 深蓝 */
  --teal:#14b8a6;          /* 青 */
  --green:#10b981;         /* 绿 */
  --ink:#0f172a;           /* 主文字 */
  --ink-2:#334155;         /* 次文字 */
  --muted:#64748b;         /* 弱文字 */
  --line:#e2e8f0;          /* 边框 */
  --bg:#ffffff;
  --bg-soft:#f0f9f8;       /* 浅青底 */
  --bg-soft-2:#f5fafe;     /* 浅蓝底 */
  --dark:#04161e;          /* 深色英雄底 */
  --dark-2:#062b3a;
  --dark-3:#073a4d;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 10px 30px -12px rgba(15,23,42,.18);
  --shadow-lg:0 24px 60px -20px rgba(2,40,55,.35);
  --grad:linear-gradient(90deg,var(--blue),var(--green));
  --grad-dark:linear-gradient(135deg,var(--dark),var(--dark-2) 55%,var(--dark-3));
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;
  -webkit-font-smoothing:antialiased;font-size:16px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
h1,h2,h3,h4{line-height:1.25;color:var(--ink);font-weight:800}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:84px 0}
.section.soft{background:var(--bg-soft)}
.section.soft2{background:var(--bg-soft-2)}
.section.dark{background:var(--grad-dark);color:#e2f5f2}
.section.dark h1,.section.dark h2,.section.dark h3{color:#fff}
.section.dark p{color:#b9d8d4}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--blue-deep);background:rgba(14,165,233,.1);padding:6px 14px;border-radius:999px;margin-bottom:16px}
.section.dark .eyebrow{color:#7fe3d6;background:rgba(127,227,214,.14)}
.section-title{font-size:clamp(26px,3.4vw,38px);margin-bottom:14px}
.section-sub{color:var(--muted);max-width:720px;margin:0 auto 44px;font-size:16px}
.text-center{text-align:center}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:15px;
  padding:13px 26px;border-radius:999px;border:0;cursor:pointer;transition:.2s;white-space:nowrap}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 28px -10px rgba(16,185,129,.6)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px -10px rgba(16,185,129,.7)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.35)}
.btn-ghost:hover{background:rgba(255,255,255,.2)}
.btn-outline{background:#fff;color:var(--blue-deep);border:1.5px solid var(--line)}
.btn-outline:hover{border-color:var(--blue);color:var(--blue)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#1e293b;transform:translateY(-2px)}
.btn-lg{padding:16px 34px;font-size:16px}

/* ---------- 顶部导航 ---------- */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px}
.brand .logo{width:34px;height:34px;border-radius:9px;background:var(--grad);
  display:grid;place-items:center;color:#fff;font-weight:900;font-size:17px;box-shadow:var(--shadow)}
.brand small{display:block;font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.02em}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{padding:9px 14px;border-radius:10px;font-size:15px;font-weight:600;color:var(--ink-2);transition:.15s}
.nav-links a:hover{background:var(--bg-soft);color:var(--blue-deep)}
.nav-links a.active{color:var(--blue-deep);background:rgba(14,165,233,.1)}
.nav-cta{margin-left:10px}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;width:42px;height:42px;border-radius:10px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);margin:5px auto;transition:.2s}

/* ---------- 英雄区 ---------- */
.hero{position:relative;background:var(--grad-dark);color:#fff;overflow:hidden;padding:92px 0 100px}
.hero::before{content:"";position:absolute;inset:0;
  background:
    radial-gradient(600px 320px at 12% 8%,rgba(14,165,233,.30),transparent 60%),
    radial-gradient(560px 360px at 88% 92%,rgba(16,185,129,.28),transparent 60%);
  pointer-events:none}
.hero .container{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(30px,4.4vw,52px);color:#fff;line-height:1.18;margin-bottom:18px}
.hero p.lead{font-size:18px;color:#c9e6e2;max-width:560px;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}
.hero-badges .tag{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  padding:7px 14px;border-radius:999px;font-size:13px;color:#dcefe9}
.hero-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:20px;padding:26px;backdrop-filter:blur(6px)}
.hero-card h3{color:#fff;font-size:18px;margin-bottom:16px}
.mini-stat{display:flex;justify-content:space-between;align-items:baseline;
  padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.14)}
.mini-stat:last-child{border-bottom:0}
.mini-stat .v{font-size:26px;font-weight:800;color:#5eead4}
.mini-stat .k{font-size:13px;color:#b9d8d4}

/* ---------- 通用卡片 ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow);transition:.2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.grid{display:grid;gap:22px}
.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-auto{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}

/* 特性/优势卡 */
.feature{padding:28px}
.feature .ic{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:rgba(14,165,233,.12);color:var(--blue-deep);margin-bottom:16px}
.feature h3{font-size:19px;margin-bottom:8px}
.feature p{color:var(--muted);font-size:15px}
.feature .num{font-size:13px;font-weight:800;color:var(--green);margin-bottom:6px;display:block}

/* 行业卡 */
.ind-card{display:block;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  background:#fff;transition:.2s;box-shadow:var(--shadow)}
.ind-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--blue)}
.ind-card .top{height:96px;background:var(--grad-dark);display:grid;place-items:center}
.ind-card .top .em{font-size:38px}
.ind-card .body{padding:20px}
.ind-card h3{font-size:18px;margin-bottom:6px}
.ind-card p{color:var(--muted);font-size:14px}
.ind-card .more{margin-top:12px;color:var(--blue-deep);font-weight:700;font-size:14px}

/* ---------- 对比表 ---------- */
.tbl-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow)}
table.cmp{width:100%;border-collapse:collapse;min-width:620px;background:#fff}
table.cmp th,table.cmp td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
table.cmp thead th{background:var(--ink);color:#fff;font-weight:700}
table.cmp thead th:last-child{background:linear-gradient(90deg,var(--blue),var(--green))}
table.cmp tbody tr:nth-child(even){background:var(--bg-soft)}
table.cmp td:first-child{font-weight:700;color:var(--ink-2)}
.tag-ok{display:inline-block;background:rgba(16,185,129,.12);color:#047857;font-weight:700;
  padding:4px 10px;border-radius:8px;font-size:14px}
.tag-mut{color:var(--muted)}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;counter-reset:s}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 18px;text-align:center;box-shadow:var(--shadow)}
.step .n{counter-increment:s;width:38px;height:38px;border-radius:50%;background:var(--grad);
  color:#fff;font-weight:800;display:grid;place-items:center;margin:0 auto 12px}
.step .n::before{content:counter(s)}
.step h4{font-size:15px;margin-bottom:6px}
.step p{font-size:13px;color:var(--muted)}
.step::after{content:"→";position:absolute;right:-12px;top:40px;color:var(--blue);font-weight:800}
.step:last-child::after{display:none}

/* ---------- 数据看板 mock ---------- */
.dash{background:#06141b;border-radius:18px;padding:20px;box-shadow:var(--shadow-lg);color:#dcefe9}
.dash .row{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:16px}
.dash .kpi{flex:1;min-width:120px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
  border-radius:12px;padding:14px}
.dash .kpi .v{font-size:24px;font-weight:800;color:#5eead4}
.dash .kpi .k{font-size:12px;color:#9fc4bf}
.dash .bars{display:flex;align-items:flex-end;gap:8px;height:120px;padding:10px 4px;
  background:rgba(255,255,255,.04);border-radius:12px}
.dash .bars .b{flex:1;background:linear-gradient(180deg,var(--blue),var(--green));border-radius:6px 6px 0 0}

/* ---------- 资质栏 ---------- */
.creds{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cred{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:12px 18px;font-weight:600;font-size:14px;box-shadow:var(--shadow)}
.cred .em{font-size:22px}

/* ---------- 案例 ---------- */
.case{padding:0;overflow:hidden}
.case .media{background:var(--grad-dark);padding:22px}
.case .body{padding:24px}
.case .res{display:flex;gap:18px;flex-wrap:wrap;margin:14px 0}
.case .res .r .v{font-size:26px;font-weight:800;color:var(--green)}
.case .res .r .k{font-size:13px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-item{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;background:#fff}
.faq-q{width:100%;text-align:left;background:none;border:0;cursor:pointer;padding:18px 22px;
  font-size:16px;font-weight:700;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-q .plus{font-size:22px;color:var(--blue-deep);transition:.2s;flex:none}
.faq-item.open .faq-q .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;color:var(--ink-2);font-size:15px}

/* ---------- 表单 ---------- */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-lg)}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;font-size:14px;margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1.5px solid var(--line);
  border-radius:10px;font-size:15px;font-family:inherit;background:#fff;transition:.15s}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--blue);
  box-shadow:0 0 0 3px rgba(14,165,233,.15)}
.field textarea{resize:vertical;min-height:96px}
.form-note{font-size:13px;color:var(--muted);margin-top:10px}
.form-ok{display:none;background:rgba(16,185,129,.12);border:1px solid rgba(16,185,129,.4);
  color:#047857;border-radius:12px;padding:16px;margin-top:16px;font-weight:600}
.form-ok.show{display:block}

/* ---------- 页脚 ---------- */
.footer{background:var(--dark);color:#b9d8d4;padding:56px 0 28px}
.footer .top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;margin-bottom:34px}
.footer h4{color:#fff;font-size:16px;margin-bottom:14px}
.footer a{color:#b9d8d4;font-size:14px;display:block;padding:5px 0;transition:.15s}
.footer a:hover{color:#5eead4}
.footer .brand{color:#fff;margin-bottom:12px}
.footer .bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:#7fa8a3}

/* ---------- 浮动留资组件 ---------- */
.fab{position:fixed;right:22px;bottom:22px;z-index:60;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.fab .fab-btn{width:56px;height:56px;border-radius:50%;border:0;cursor:pointer;display:grid;place-items:center;
  font-size:24px;color:#fff;box-shadow:var(--shadow-lg);transition:.2s;position:relative}
.fab .fab-btn:hover{transform:scale(1.06)}
.fab .call{background:linear-gradient(135deg,#0ea5e9,#2563eb)}
.fab .wx{background:linear-gradient(135deg,#10b981,#14b8a6)}
.fab .diag{background:var(--grad);font-size:13px;font-weight:700;width:auto;padding:0 18px;border-radius:999px;height:48px}
.fab .wx-pop{position:absolute;right:66px;bottom:0;background:#fff;border-radius:14px;padding:12px;
  box-shadow:var(--shadow-lg);width:180px;text-align:center;display:none}
.fab .wx-pop.show{display:block;animation:pop .2s ease}
.fab .wx-pop img{width:150px;height:150px;background:#eef;border-radius:8px;margin:0 auto 6px}
.fab .wx-pop .t{font-size:12px;color:var(--ink);font-weight:600}
@keyframes pop{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* 弹窗 */
.modal-mask{position:fixed;inset:0;background:rgba(4,22,30,.6);z-index:70;display:none;
  align-items:center;justify-content:center;padding:20px;backdrop-filter:blur(3px)}
.modal-mask.show{display:flex}
.modal{background:#fff;border-radius:20px;max-width:460px;width:100%;padding:32px;position:relative;
  box-shadow:var(--shadow-lg);animation:pop .25s ease}
.modal .close{position:absolute;right:16px;top:14px;background:none;border:0;font-size:24px;
  color:var(--muted);cursor:pointer}
.modal h3{font-size:22px;margin-bottom:8px}
.modal p.sub{color:var(--muted);margin-bottom:20px;font-size:15px}

/* 滚动揭示 */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* 面包屑 */
.crumb{font-size:13px;color:var(--muted);padding:18px 0 0}
.crumb a:hover{color:var(--blue-deep)}

/* 博客 */
.blog-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:#fff;box-shadow:var(--shadow);transition:.2s}
.blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.blog-card .thumb{height:160px;background:var(--grad-dark);display:grid;place-items:center;color:#7fe3d6;font-size:40px}
.blog-card .body{padding:20px;flex:1;display:flex;flex-direction:column}
.blog-card .body h3{font-size:18px;margin-bottom:8px}
.blog-card .body p{color:var(--muted);font-size:14px;flex:1}
.blog-card .meta{font-size:13px;color:var(--blue-deep);font-weight:600;margin-top:12px}

/* 文章页 */
.article{max-width:780px;margin:0 auto}
.article h1{font-size:clamp(26px,3.6vw,38px);margin:10px 0 16px}
.article h2{font-size:24px;margin:34px 0 12px}
.article h3{font-size:19px;margin:24px 0 10px}
.article p{margin-bottom:16px;color:var(--ink-2);font-size:16px}
.article ul.styled{margin:0 0 18px 22px;list-style:disc}
.article ul.styled li{margin-bottom:8px;color:var(--ink-2)}
.article blockquote{background:var(--bg-soft);border-left:4px solid var(--blue);padding:14px 18px;
  border-radius:0 10px 10px 0;margin-bottom:18px;color:var(--ink-2)}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .hero .container{grid-template-columns:1fr}
  .hero-card{order:-1}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .step::after{display:none}
  .footer .top{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .section{padding:60px 0}
  .nav-links{position:fixed;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;padding:10px 20px;gap:0;display:none;box-shadow:var(--shadow)}
  .nav-links.show{display:flex}
  .nav-links a{padding:13px 8px;border-bottom:1px solid var(--line)}
  .nav-cta{margin:10px 0 6px}
  .nav-toggle{display:block}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .footer .top{grid-template-columns:1fr}
  .hero-cta .btn{flex:1;justify-content:center}
}