/* ===========================================================
   安途 ATDTS 官网 · 全局样式
   Auto Dealership AI Decision & Tracking System
   =========================================================== */

:root{
  --bg:#080c16;
  --bg-2:#0d1320;
  --panel:rgba(255,255,255,.035);
  --panel-2:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --text:#eef2f8;
  --text-2:#a4b0c4;
  --text-3:#6d7b91;
  --blue:#3b82f6;
  --cyan:#06b6d4;
  --purple:#8b5cf6;
  --emerald:#10b981;
  --amber:#f59e0b;
  --rose:#f43f5e;
  --gold:#d4a843;
  --grad-blue:linear-gradient(135deg,#1d4ed8 0%,#06b6d4 100%);
  --grad-gold:linear-gradient(135deg,#b8860b 0%,#f0cf85 55%,#c99a3a 100%);
  --grad-text:linear-gradient(120deg,#ffffff 0%,#9db8e0 55%,#4fd1e0 100%);
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 18px 50px -18px rgba(0,0,0,.75);
  --max:1200px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Inter,system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(900px 600px at 12% -5%,rgba(59,130,246,.20),transparent 60%),
    radial-gradient(800px 600px at 88% 8%,rgba(139,92,246,.14),transparent 62%),
    radial-gradient(1000px 700px at 50% 108%,rgba(6,182,212,.12),transparent 60%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.alt-bg{background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,0))}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  background:rgba(8,12,22,.82);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:74px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--grad-blue);font-weight:800;font-size:15px;letter-spacing:.5px;
  box-shadow:0 0 26px rgba(59,130,246,.45);
}
.brand-text strong{display:block;font-size:16px;letter-spacing:.5px}
.brand-text small{display:block;font-size:10px;color:var(--text-3);letter-spacing:.4px;line-height:1.3}
.site-nav{margin-left:auto;display:flex;align-items:center;gap:6px}
.site-nav a{
  padding:9px 14px;border-radius:9px;font-size:14px;color:var(--text-2);
  transition:.2s;white-space:nowrap;
}
.site-nav a:hover{color:#fff;background:var(--panel-2)}
.site-nav a.active{color:#fff;background:rgba(59,130,246,.16);box-shadow:inset 0 0 0 1px rgba(59,130,246,.35)}
.site-nav a.nav-cta{
  background:var(--grad-blue);color:#fff;font-weight:600;margin-left:8px;
  box-shadow:0 6px 22px -6px rgba(59,130,246,.8);
}
.nav-toggle{display:none;margin-left:auto;background:var(--panel-2);border:1px solid var(--line);
  color:#fff;font-size:18px;width:42px;height:38px;border-radius:10px;cursor:pointer}

/* ---------- 通用标题 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:2px;
  color:var(--cyan);text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan)}
h1,h2,h3,h4{line-height:1.3;font-weight:700}
h1{font-size:clamp(30px,4.4vw,54px);letter-spacing:-.5px}
h2{font-size:clamp(24px,3vw,38px);letter-spacing:-.4px}
h3{font-size:19px}
.section-head{max-width:820px;margin-bottom:52px}
.section-head p{color:var(--text-2);font-size:16px;margin-top:16px}
.grad-text{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.gold-text{background:var(--grad-gold);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:11px;
  font-size:15px;font-weight:600;transition:.22s;border:1px solid transparent;cursor:pointer;
}
.btn-primary{background:var(--grad-blue);color:#fff;box-shadow:0 14px 34px -14px rgba(59,130,246,.95)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 40px -14px rgba(59,130,246,1)}
.btn-ghost{border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{background:var(--panel-2);border-color:rgba(59,130,246,.55)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

/* ---------- 首屏 ---------- */
.hero{padding:104px 0 84px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.hero h1{margin-bottom:22px}
.hero .lead{font-size:17px;color:var(--text-2);max-width:620px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.chip{
  font-size:12.5px;padding:6px 13px;border-radius:999px;color:var(--text-2);
  background:var(--panel);border:1px solid var(--line);
}
.chip.on{color:#cfe3ff;border-color:rgba(59,130,246,.45);background:rgba(59,130,246,.12)}

/* 数据面板（视觉主图，纯 CSS 绘制） */
.dash-mock{
  border:1px solid var(--line);border-radius:22px;padding:18px;background:
    linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.015));
  box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.dash-mock::after{
  content:"";position:absolute;inset:-40% -20% auto auto;width:340px;height:340px;
  background:radial-gradient(circle,rgba(6,182,212,.30),transparent 68%);filter:blur(6px);
}
.dash-title{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-3);margin-bottom:14px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--emerald);box-shadow:0 0 10px var(--emerald)}
.kpi-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px;position:relative}
.kpi{
  border:1px solid var(--line);border-radius:12px;padding:12px 13px;background:rgba(9,14,25,.6);
}
.kpi span{font-size:11px;color:var(--text-3);display:block}
.kpi b{font-size:21px;letter-spacing:-.5px}
.kpi i{font-style:normal;font-size:11px;margin-left:5px}
.up{color:var(--emerald)}.down{color:var(--rose)}
.mini-bars{display:flex;align-items:flex-end;gap:7px;height:104px;padding:10px;border-radius:12px;
  border:1px solid var(--line);background:rgba(9,14,25,.55);position:relative}
.mini-bars i{
  flex:1;border-radius:5px 5px 2px 2px;background:linear-gradient(180deg,#4fa3ff,#1d4ed8);
  opacity:.85;animation:grow 1.1s cubic-bezier(.2,.8,.2,1) both;
}
.mini-bars i:nth-child(even){background:linear-gradient(180deg,#39d8e6,#0e7490)}
@keyframes grow{from{height:4px!important;opacity:.2}}
.dash-note{font-size:11.5px;color:var(--text-3);margin-top:12px;display:flex;justify-content:space-between}

/* ---------- 卡片网格 ---------- */
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{
  border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  background:linear-gradient(165deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  transition:.25s;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-4px);border-color:rgba(59,130,246,.42);box-shadow:0 22px 46px -22px rgba(59,130,246,.75)}
.card h3{margin-bottom:10px}
.card p{color:var(--text-2);font-size:14.5px}
.card-icon{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-size:20px;
  margin-bottom:16px;background:rgba(59,130,246,.14);border:1px solid rgba(59,130,246,.3);
}
.card-icon.cy{background:rgba(6,182,212,.14);border-color:rgba(6,182,212,.3)}
.card-icon.pu{background:rgba(139,92,246,.14);border-color:rgba(139,92,246,.3)}
.card-icon.em{background:rgba(16,185,129,.14);border-color:rgba(16,185,129,.3)}
.card-icon.am{background:rgba(245,158,11,.14);border-color:rgba(245,158,11,.3)}
.card-icon.ro{background:rgba(244,63,94,.14);border-color:rgba(244,63,94,.3)}
.card-num{position:absolute;right:18px;top:14px;font-size:44px;font-weight:800;color:rgba(255,255,255,.05)}

/* ---------- 列表 ---------- */
.tick{display:flex;flex-direction:column;gap:10px;margin-top:16px}
.tick li{position:relative;padding-left:24px;color:var(--text-2);font-size:14.5px}
.tick li::before{
  content:"";position:absolute;left:0;top:10px;width:9px;height:9px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 10px rgba(6,182,212,.85);
}
.tick.gold li::before{background:var(--gold);box-shadow:0 0 10px rgba(212,168,67,.85)}

/* ---------- 架构分层 ---------- */
.stack{display:flex;flex-direction:column;gap:14px}
.layer{
  border:1px solid var(--line);border-radius:14px;padding:22px 24px;
  background:linear-gradient(100deg,rgba(255,255,255,.055),rgba(255,255,255,.01));
  display:grid;grid-template-columns:210px 1fr;gap:24px;align-items:center;transition:.25s;
}
.layer:hover{border-color:rgba(6,182,212,.45);transform:translateX(6px)}
.layer .lv{font-size:12px;color:var(--text-3);letter-spacing:1.6px}
.layer h4{font-size:18px;margin-top:4px}
.layer p{color:var(--text-2);font-size:14.5px}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:rgba(9,14,25,.5)}
table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:620px}
th,td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:rgba(59,130,246,.10);font-size:13px;letter-spacing:.6px;color:#cfe0ff;font-weight:600;white-space:nowrap}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:rgba(255,255,255,.028)}
td b{color:#fff}
.price{font-size:17px;font-weight:700;color:#fff}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:34px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--blue),var(--cyan),transparent)}
.tl-item{position:relative;padding-bottom:38px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:7px;width:14px;height:14px;border-radius:50%;
  background:var(--bg);border:3px solid var(--blue);box-shadow:0 0 14px rgba(59,130,246,.8);
}
.tl-item .when{font-size:12.5px;color:var(--cyan);letter-spacing:1px}
.tl-item h4{font-size:17px;margin:6px 0 8px}
.tl-item p{color:var(--text-2);font-size:14.5px}

/* ---------- 统计条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat{
  border:1px solid var(--line);border-radius:14px;padding:24px;text-align:center;
  background:linear-gradient(170deg,rgba(255,255,255,.06),rgba(255,255,255,.012));
}
.stat b{display:block;font-size:clamp(26px,3.2vw,38px);letter-spacing:-1px}
.stat span{font-size:13px;color:var(--text-2)}

/* ---------- 联系我们 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:44px;align-items:start}
.info-item{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
.info-item .ic{
  width:46px;height:46px;flex:0 0 46px;border-radius:13px;display:grid;place-items:center;
  background:rgba(59,130,246,.14);border:1px solid rgba(59,130,246,.3);font-size:19px;
}
.info-item h4{font-size:14px;color:var(--text-3);font-weight:500;letter-spacing:.5px}
.info-item p{font-size:17px;font-weight:600;letter-spacing:.3px}
.info-item small{color:var(--text-3);font-size:12.5px}
form{display:grid;gap:14px}
.field{display:grid;gap:7px}
.field label{font-size:13px;color:var(--text-2)}
input,select,textarea{
  width:100%;padding:13px 15px;border-radius:11px;font-size:14.5px;font-family:inherit;
  background:rgba(9,14,25,.72);border:1px solid var(--line);color:var(--text);transition:.2s;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:rgba(59,130,246,.75);box-shadow:0 0 0 3px rgba(59,130,246,.16)}
textarea{resize:vertical;min-height:120px}
.form-note{font-size:12.5px;color:var(--text-3)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:rgba(6,10,19,.85);margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding:56px 0 34px}
.site-footer h5{font-size:13.5px;letter-spacing:1px;color:#fff;margin-bottom:16px}
.site-footer a,.site-footer p,.site-footer li{color:var(--text-3);font-size:13.5px}
.site-footer a:hover{color:var(--cyan)}
.site-footer ul{display:grid;gap:9px}
.footer-bar{border-top:1px solid var(--line);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;color:var(--text-3);font-size:12.5px}

/* ---------- 内页头图 ---------- */
.page-head{padding:76px 0 44px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(59,130,246,.10),transparent)}
.page-head p{color:var(--text-2);font-size:16px;max-width:760px;margin-top:16px}
.crumb{font-size:12.5px;color:var(--text-3);margin-bottom:14px}
.crumb a:hover{color:var(--cyan)}

/* ---------- CTA 区块 ---------- */
.cta{
  border:1px solid rgba(59,130,246,.35);border-radius:24px;padding:52px;
  background:linear-gradient(120deg,rgba(29,78,216,.30),rgba(6,182,212,.14) 60%,transparent);
  display:flex;flex-wrap:wrap;align-items:center;gap:28px;justify-content:space-between;
}
.cta h2{font-size:clamp(22px,2.6vw,32px)}
.cta p{color:var(--text-2);margin-top:10px;max-width:620px}

/* ---------- 响应式 ---------- */
@media (max-width:1000px){
  .hero-grid,.contact-grid{grid-template-columns:1fr}
  .g4{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .layer{grid-template-columns:1fr;gap:10px}
}
@media (max-width:760px){
  .section{padding:64px 0}
  .nav-toggle{display:block}
  .site-nav{
    position:absolute;top:74px;left:0;right:0;flex-direction:column;align-items:stretch;
    background:rgba(8,12,22,.98);border-bottom:1px solid var(--line);padding:14px;gap:4px;display:none;
  }
  .site-nav.open{display:flex}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .brand-text small{display:none}
  .cta{padding:32px}
  .two{grid-template-columns:1fr}
}

/* ===========================================================
   看板图表层（ECharts 容器与布局）
   =========================================================== */
.board{
  border:1px solid var(--line);border-radius:20px;padding:22px;
  background:linear-gradient(165deg,rgba(255,255,255,.055),rgba(255,255,255,.012));
  box-shadow:var(--shadow);
}
.board-head{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  padding-bottom:16px;margin-bottom:18px;border-bottom:1px solid var(--line);
}
.board-head h3{margin:0}
.board-head .sub{font-size:12.5px;color:var(--text-3)}
.board-head .right{margin-left:auto;display:flex;gap:8px;flex-wrap:wrap}
.tag{
  font-size:11.5px;padding:4px 10px;border-radius:999px;
  background:rgba(16,185,129,.12);border:1px solid rgba(16,185,129,.35);color:#6ee7b7;
}
.tag.live{background:rgba(59,130,246,.12);border-color:rgba(59,130,246,.35);color:#93c5fd}
.tag.demo{background:rgba(245,158,11,.12);border-color:rgba(245,158,11,.35);color:#fcd34d}

/* KPI 卡片行 */
.kpis{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-bottom:18px}
.kpi2{
  border:1px solid var(--line);border-radius:14px;padding:16px 15px;
  background:rgba(9,14,25,.58);position:relative;overflow:hidden;
}
.kpi2::after{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--blue)}
.kpi2.ok::after{background:var(--emerald)}
.kpi2.warn::after{background:var(--amber)}
.kpi2.bad::after{background:var(--rose)}
.kpi2 .lbl{font-size:12px;color:var(--text-3);display:flex;align-items:center;gap:6px}
.kpi2 .val{font-size:23px;font-weight:700;letter-spacing:-.6px;line-height:1.25;margin-top:6px}
.kpi2 .val small{font-size:12px;font-weight:400;color:var(--text-2);margin-left:2px}
.kpi2 .dlt{font-size:11.5px;margin-top:4px;color:var(--text-2)}
.kpi2 .dlt.up{color:var(--emerald)}
.kpi2 .dlt.down{color:var(--rose)}
.kpi2 .bar{height:4px;border-radius:3px;background:rgba(255,255,255,.08);margin-top:9px;overflow:hidden}
.kpi2 .bar i{display:block;height:100%;border-radius:3px;background:var(--grad-blue)}

/* 图表网格 */
.chart-grid{display:grid;gap:16px}
.cg-2{grid-template-columns:repeat(2,1fr)}
.cg-3{grid-template-columns:repeat(3,1fr)}
.cg-2-1{grid-template-columns:1.55fr 1fr}
.cg-1-2{grid-template-columns:1fr 1.55fr}
.chart-box{
  border:1px solid var(--line);border-radius:16px;padding:14px 12px 8px;
  background:rgba(9,14,25,.5);transition:.25s;
}
.chart-box:hover{border-color:rgba(59,130,246,.35)}
.chart{width:100%;height:288px}
.chart.tall{height:340px}
.chart.short{height:222px}
.chart.xshort{height:180px}
.gauge{width:100%;height:186px}

/* 诊断输出条 */
.diagnosis{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}
.dg{border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:12px;padding:16px 18px;background:rgba(9,14,25,.6)}
.dg.good{border-left-color:var(--emerald)}
.dg.warn{border-left-color:var(--amber)}
.dg.bad{border-left-color:var(--rose)}
.dg h4{font-size:13.5px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.dg h4 span{font-size:11px;color:var(--text-3);font-weight:400}
.dg p{font-size:13.5px;color:var(--text-2)}
.dg ul{display:grid;gap:6px;margin-top:8px}
.dg li{font-size:13px;color:var(--text-2);padding-left:14px;position:relative}
.dg li::before{content:"→";position:absolute;left:0;color:var(--cyan);font-size:11px}

/* 切换按钮组 */
.switcher{display:flex;gap:6px;background:rgba(9,14,25,.7);border:1px solid var(--line);border-radius:11px;padding:4px}
.switcher button{
  background:transparent;border:0;color:var(--text-2);font-size:12.5px;font-family:inherit;
  padding:7px 14px;border-radius:8px;cursor:pointer;transition:.2s;white-space:nowrap;
}
.switcher button:hover{color:#fff}
.switcher button.on{background:var(--grad-blue);color:#fff;font-weight:600}

.legend-note{display:flex;flex-wrap:wrap;gap:16px;margin-top:14px;font-size:12.5px;color:var(--text-3)}
.legend-note i{display:inline-block;width:9px;height:9px;border-radius:2px;margin-right:6px}

/* 案例卡：痛点导向版式（无地点 / 无客户类型标签） */
.case-no{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-size:14px;font-weight:700;color:#fff;background:var(--grad-blue);
  box-shadow:0 6px 18px -8px rgba(59,130,246,.9);
}
.case-cat{
  font-size:12px;letter-spacing:1px;padding:5px 12px;border-radius:8px;
  background:rgba(6,182,212,.13);border:1px solid rgba(6,182,212,.34);color:#a5f3fc;
}
.case-tags{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;padding-top:18px;
  border-top:1px solid var(--line);
}
.case-tag{
  font-size:11.5px;padding:5px 11px;border-radius:999px;
  background:var(--panel);border:1px solid var(--line);color:var(--text-2);
}
.case-card h3{font-size:19px;line-height:1.5}
.case-card .case-block h5{font-size:12.5px;color:var(--cyan);letter-spacing:1px;margin-bottom:8px}
.case-card .case-block p{font-size:14px;line-height:1.85}
.case-card .case-block li{font-size:13.8px;line-height:1.8}

@media (max-width:1000px){
  .kpis{grid-template-columns:repeat(3,1fr)}
  .cg-2,.cg-3,.cg-2-1,.cg-1-2{grid-template-columns:1fr}
  .diagnosis{grid-template-columns:1fr}
}
@media (max-width:760px){
  .kpis{grid-template-columns:repeat(2,1fr)}
  .chart{height:250px}
  .board{padding:16px}
}

/* ===========================================================
   信息架构：页内锚点导航 / 板块导航卡 / 案例卡
   =========================================================== */
.subnav{
  position:sticky;top:74px;z-index:50;
  background:rgba(8,12,22,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.subnav .container{display:flex;gap:6px;overflow-x:auto;padding:9px 24px;scrollbar-width:none}
.subnav .container::-webkit-scrollbar{display:none}
.subnav a{
  font-size:13px;color:var(--text-2);padding:7px 13px;border-radius:8px;white-space:nowrap;transition:.2s;
}
.subnav a:hover{background:var(--panel-2);color:#fff}
.subnav a b{color:var(--cyan);font-weight:700;margin-right:6px;font-size:11.5px;letter-spacing:.5px}

/* 首页板块导航 */
.nav-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.nav-card{
  border:1px solid var(--line);border-radius:18px;padding:26px;position:relative;overflow:hidden;
  background:linear-gradient(165deg,rgba(255,255,255,.06),rgba(255,255,255,.014));
  transition:.26s;display:flex;flex-direction:column;
}
.nav-card:hover{transform:translateY(-5px);border-color:rgba(59,130,246,.5);box-shadow:0 24px 48px -24px rgba(59,130,246,.8)}
.nav-card .idx{font-size:12px;letter-spacing:2px;color:var(--cyan);margin-bottom:12px}
.nav-card h3{font-size:20px;margin-bottom:10px}
.nav-card p{color:var(--text-2);font-size:14px;flex:1}
.nav-card .go{margin-top:18px;font-size:13.5px;color:#93c5fd;display:flex;align-items:center;gap:6px}
.nav-card::after{
  content:"";position:absolute;right:-30px;bottom:-30px;width:140px;height:140px;border-radius:50%;
  background:radial-gradient(circle,rgba(59,130,246,.16),transparent 70%);
}

/* 案例卡 */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:30px}
.filters button{
  font-family:inherit;font-size:13px;padding:9px 17px;border-radius:999px;cursor:pointer;transition:.2s;
  background:var(--panel);border:1px solid var(--line);color:var(--text-2);
}
.filters button:hover{color:#fff;border-color:rgba(59,130,246,.45)}
.filters button.on{background:var(--grad-blue);border-color:transparent;color:#fff;font-weight:600}

.case-card{
  border:1px solid var(--line);border-radius:18px;padding:28px;
  background:linear-gradient(165deg,rgba(255,255,255,.055),rgba(255,255,255,.014));
  transition:.26s;
}
.case-card:hover{border-color:rgba(6,182,212,.45);transform:translateY(-4px)}
.case-card .top{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:14px}
.case-card .city{
  font-size:12px;font-weight:700;letter-spacing:1px;padding:5px 12px;border-radius:8px;
  background:rgba(59,130,246,.16);border:1px solid rgba(59,130,246,.35);color:#bfdbfe;
}
.case-card h3{font-size:19px;margin-bottom:8px}
.case-card .meta{font-size:12.5px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:14px;margin-bottom:16px}
.case-body{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}
.case-block h5{font-size:12.5px;color:var(--cyan);letter-spacing:1px;margin-bottom:8px}
.case-block p,.case-block li{font-size:13.5px;color:var(--text-2)}
.case-block ul{display:grid;gap:6px}
.case-block li{position:relative;padding-left:14px}
.case-block li::before{content:"·";position:absolute;left:2px;color:var(--cyan);font-weight:700}
.case-kpi{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.case-kpi div{text-align:center}
.case-kpi b{display:block;font-size:22px;letter-spacing:-.5px;color:#fff}
.case-kpi span{font-size:12px;color:var(--text-3)}

@media (max-width:1000px){
  .nav-cards{grid-template-columns:repeat(2,1fr)}
  .case-body{grid-template-columns:1fr}
}
@media (max-width:760px){
  .nav-cards{grid-template-columns:1fr}
  .case-kpi{grid-template-columns:1fr 1fr}
  .subnav{top:74px}
}

/* ===========================================================
   高端排版组件：无图标数字板（ledger）
   =========================================================== */
.ledger{
  display:grid;grid-template-columns:repeat(2,1fr);
  border:1px solid var(--line);border-radius:20px;overflow:hidden;
  background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.006));
}
.ledger.c3{grid-template-columns:repeat(3,1fr)}
.ledger > *{
  padding:38px 34px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  position:relative;transition:background .28s;
}
.ledger > *:hover{background:rgba(255,255,255,.028)}
.ledger .head-line{display:flex;align-items:baseline;gap:14px;margin-bottom:16px}
.ledger .no{
  font-size:38px;font-weight:200;line-height:1;letter-spacing:-1.5px;
  color:rgba(255,255,255,.20);font-variant-numeric:tabular-nums;
}
.ledger .en{font-size:10px;letter-spacing:3.6px;text-transform:uppercase;color:var(--gold)}
.ledger h3{font-size:22px;font-weight:600;letter-spacing:-.2px;margin-bottom:12px;line-height:1.35}
.ledger p{color:var(--text-2);font-size:14.5px}
.ledger ul{display:grid;gap:9px;margin-top:16px}
.ledger li{font-size:13.8px;color:var(--text-2);padding-left:17px;position:relative}
.ledger li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:1px;background:var(--cyan)}
.ledger li b{color:#dfe8f7;font-weight:600}
.ledger .more{
  display:inline-flex;align-items:center;gap:7px;margin-top:20px;
  font-size:13px;letter-spacing:.4px;color:#9dc2f7;transition:.2s;
}
.ledger .more:hover{color:#fff;gap:11px}
.ledger a.wrap{display:block;color:inherit}

/* 纯文字陈述块 */
.statement{
  border-left:2px solid rgba(212,168,67,.55);padding:4px 0 4px 26px;
  display:grid;gap:9px;
}
.statement h3{font-size:17px;font-weight:600;letter-spacing:.1px}
.statement p{color:var(--text-2);font-size:14.5px}
.statement .k{color:var(--gold);font-size:11px;letter-spacing:2.6px;text-transform:uppercase}

/* 场景对照（能做什么） */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line)}
.scene > div{
  display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center;
  padding:20px 4px;border-bottom:1px solid var(--line);
}
.scene .from{font-size:14.5px;color:var(--text-3)}
.scene .arrow{color:var(--cyan);font-size:15px}
.scene .to{font-size:14.5px;color:#fff;font-weight:600}
.scene > div:nth-child(odd){padding-right:28px;border-right:1px solid var(--line)}
.scene > div:nth-child(even){padding-left:28px}

/* 大号要点横排 */
.highlights{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.highlights > div{border-top:1px solid var(--line-strong);padding-top:20px}
.highlights .k{font-size:11px;letter-spacing:2.6px;color:var(--text-3);text-transform:uppercase}
.highlights b{display:block;font-size:20px;font-weight:600;margin:10px 0 8px;letter-spacing:-.2px}
.highlights p{color:var(--text-2);font-size:14px}

/* 看板页头（子页） */
.subpage-hero{
  padding:70px 0 40px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(59,130,246,.09),transparent);
}
.subpage-hero .kicker{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.subpage-hero .no{
  font-size:52px;font-weight:200;line-height:1;letter-spacing:-2px;color:rgba(255,255,255,.18);
}
.subpage-hero .en{font-size:10.5px;letter-spacing:4px;text-transform:uppercase;color:var(--gold)}
.subpage-hero h1{font-size:clamp(28px,3.6vw,42px)}
.subpage-hero p{color:var(--text-2);font-size:16px;max-width:820px;margin-top:16px}
.rolebar{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;font-size:13px;color:var(--text-3)}
.rolebar span b{color:var(--text);font-weight:600;margin-right:6px}

@media (max-width:1000px){
  .ledger,.ledger.c3{grid-template-columns:1fr}
  .scene{grid-template-columns:1fr}
  .scene > div:nth-child(odd){border-right:none;padding-right:4px}
  .scene > div:nth-child(even){padding-left:4px}
  .highlights{grid-template-columns:1fr;gap:20px}
}
@media (max-width:760px){
  .ledger > *{padding:26px 22px}
  .subpage-hero .no{font-size:38px}
}

/* ===========================================================
   品牌标识 / 信任条 / 资料下载
   =========================================================== */
.logo-img{height:38px;width:auto;display:block}
.nav-wrap .logo-img{height:36px}
.site-footer .logo-img{opacity:.95}

.trustbar{
  display:flex;flex-wrap:wrap;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.008));
}
.trustbar > div{flex:1 1 190px;padding:22px 26px;border-right:1px solid var(--line)}
.trustbar > div:last-child{border-right:none}
.trustbar .v{font-size:19px;font-weight:600;color:#fff;letter-spacing:-.2px}
.trustbar .k{font-size:12px;color:var(--text-3);letter-spacing:.6px;margin-top:6px}
.trustbar .v small{font-size:12px;color:var(--text-2);font-weight:400;margin-left:4px}

.res-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.res-card{
  border:1px solid var(--line);border-radius:18px;padding:28px;
  background:linear-gradient(165deg,rgba(255,255,255,.055),rgba(255,255,255,.012));
  display:flex;flex-direction:column;transition:.25s;
}
.res-card:hover{border-color:rgba(6,182,212,.45);transform:translateY(-4px)}
.res-card .tagline{font-size:10.5px;letter-spacing:2.6px;color:var(--cyan);text-transform:uppercase;margin-bottom:14px}
.res-card h3{font-size:18px;margin-bottom:12px;line-height:1.45}
.res-card p{color:var(--text-2);font-size:14px;flex:1}
.res-card .meta{margin-top:16px;font-size:12.5px;color:var(--text-3);display:flex;justify-content:space-between}

.leadbox{
  margin-top:22px;display:grid;grid-template-columns:1fr 1fr;gap:32px;
  border:1px solid rgba(59,130,246,.32);border-radius:22px;padding:36px;
  background:linear-gradient(120deg,rgba(29,78,216,.22),rgba(6,182,212,.10) 62%,transparent);
}
.leadbox h3{font-size:21px;margin-bottom:12px}
.leadbox p{color:var(--text-2);font-size:14.5px}
.leadbox ul{display:grid;gap:9px;margin-top:16px}
.leadbox li{position:relative;padding-left:17px;font-size:13.8px;color:var(--text-2)}
.leadbox li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:1px;background:var(--cyan)}
.lead-form{display:grid;gap:12px}
.lead-form .row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.lead-form .form-tip{font-size:13px;min-height:18px;color:var(--text-3)}

@media (max-width:1000px){
  .res-grid{grid-template-columns:1fr}
  .leadbox{grid-template-columns:1fr}
}
@media (max-width:760px){
  .logo-img{height:30px}
  .nav-wrap .logo-img{height:30px}
  .trustbar > div{flex:1 1 50%;padding:18px 20px}
  .lead-form .row2{grid-template-columns:1fr}
}

/* ===========================================================
   导航下拉菜单（产品体系 → 四大能力板块子页）
   =========================================================== */
.site-nav .has-menu{position:relative;display:flex;align-items:center}
.site-nav .nav-parent{display:inline-flex;align-items:center;gap:6px}
.site-nav .caret{
  font-size:9px;line-height:1;color:var(--text-3);
  transition:transform .22s ease, color .22s ease;
}
.site-nav .has-menu:hover .caret,
.site-nav .has-menu:focus-within .caret{transform:rotate(180deg);color:var(--cyan)}

/* 悬停桥接：避免指针从菜单项移动到面板时丢失 hover */
.site-nav .has-menu::after{
  content:"";position:absolute;left:0;right:0;top:100%;height:14px;
}

.nav-menu{
  position:absolute;top:calc(100% + 10px);left:-10px;min-width:268px;
  padding:10px;border-radius:16px;z-index:80;
  background:rgba(10,15,26,.985);
  border:1px solid var(--line-strong);
  box-shadow:0 24px 56px -20px rgba(0,0,0,.85), 0 0 0 1px rgba(59,130,246,.12);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease, transform .22s cubic-bezier(.2,.8,.2,1), visibility .2s;
  pointer-events:none;
}
.nav-menu::before{
  content:"";position:absolute;top:-6px;left:26px;width:11px;height:11px;
  background:rgba(10,15,26,.985);border-left:1px solid var(--line-strong);
  border-top:1px solid var(--line-strong);transform:rotate(45deg);
}
.site-nav .has-menu:hover .nav-menu,
.site-nav .has-menu:focus-within .nav-menu{
  opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto;
}

.nav-menu a{
  display:block;padding:11px 14px;border-radius:11px;transition:.18s;
}
.nav-menu a b{
  display:block;font-size:14px;font-weight:600;color:#e8eefb;letter-spacing:.2px;
}
.nav-menu a small{
  display:block;font-size:11.5px;color:var(--text-3);margin-top:3px;letter-spacing:.2px;
}
.nav-menu a:hover{background:rgba(59,130,246,.14)}
.nav-menu a:hover b{color:#fff}
.nav-menu a:hover small{color:var(--text-2)}
.nav-menu .menu-sep{
  height:1px;background:var(--line);margin:8px 10px;
}
.nav-menu .nav-overview b{color:#9dc2f7}
.nav-menu a:hover .nav-overview b{color:#fff}

/* 触屏 / 窄屏：下拉改为内联展开，保证可达 */
@media (max-width:760px){
  .site-nav .has-menu{display:block;width:100%}
  .site-nav .caret{display:none}
  .nav-menu{
    position:static;opacity:1;visibility:visible;transform:none;pointer-events:auto;
    min-width:0;padding:2px 0 6px 12px;border:none;background:transparent;box-shadow:none;
  }
  .nav-menu::before{display:none}
  .nav-menu a{padding:9px 12px}
}

/* ===========================================================
   提示条（部分展示 / 需预约）
   =========================================================== */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  border:1px solid rgba(245,158,11,.42);border-left:3px solid var(--amber);
  border-radius:14px;padding:20px 24px;margin-top:26px;
  background:linear-gradient(100deg,rgba(245,158,11,.14),rgba(245,158,11,.03) 70%,transparent);
}
.notice .ic{
  flex:0 0 auto;font-size:15px;line-height:1.5;color:var(--amber);font-weight:700;
  letter-spacing:1px;
}
.notice h4{font-size:15.5px;margin-bottom:6px;color:#fff}
.notice p{font-size:14px;color:var(--text-2)}
.notice b{color:#fcd34d}
.notice .notice-cta{margin-top:12px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}

.figure-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}
.figure{
  flex:1 1 200px;border:1px solid var(--line);border-radius:14px;padding:20px 22px;
  background:linear-gradient(165deg,rgba(255,255,255,.06),rgba(255,255,255,.012));
}
.figure b{display:block;font-size:26px;font-weight:700;letter-spacing:-.6px;color:#fff}
.figure span{font-size:12.5px;color:var(--text-3);letter-spacing:.3px}

@media (max-width:760px){
  .notice{padding:16px 18px;gap:12px}
  .figure-row{gap:10px}
  .figure{flex:1 1 45%;padding:16px}
  .figure b{font-size:22px}
}