:root{
    --bg-0:#041d44; --bg-1:#062146; --bg-2:#0a2c5e;
    --ink:#eaf4ff; --muted:#8fa8c8; --faint:#5e769b;
    --cyan:#35d6ff; --blue:#29a8df; --gold:#ffb020; --amber:#f5a623;
    --pink:#e94f8a; --green:#7ac943; --purple:#8352c9;
    --line:rgba(53,214,255,.22);
    --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  }

/* ===================== 整站布局（深色科技风，与地图协调） ===================== */
:root{
  --bg:#041d44; --bg2:#0a2348; --panel:rgba(16,26,48,.66);
  --bd:rgba(86,150,230,.16); --cyan:#35d6ff; --red:#e63946; --gold:#ffb020;
  --txt:#e9eff8; --muted:#94a8c6; --grad:linear-gradient(135deg,#35d6ff,#7b6cff);
}
.nav .links a{padding:7px 13px;border-radius:9px;font-size:18px;color:var(--muted);transition:.18s}
.badge{position:absolute;top:14px;right:14px;font-size:11px;color:var(--gold);
  border:1px solid rgba(255,176,32,.4);padding:3px 8px;border-radius:8px}
.shot{aspect-ratio:4/3;border-radius:14px;border:1px dashed var(--bd);
  background:linear-gradient(135deg,rgba(53,214,255,.06),rgba(123,108,255,.06));
  display:grid;place-items:center;color:var(--muted);font-size:13px;text-align:center;padding:10px}
.foot .col h4{margin:0 0 12px;font-size:14px;color:var(--cyan)}
.foot .col p{color:var(--muted);font-size:14px;display:block;margin:6px 0}

/* 全站介绍性文字两端对齐（首行左起、整行两端撑齐、末行左对齐；标题/导航/KPI/按钮等单行元素不受影响） */
p,li,.note,.tip,.article p{text-align:justify;text-align-last:left;text-justify:inter-ideograph}

/* ===== 子页浅色主题（二级网页底色改为浅色） ===== */
body.subpage{--bg:#f3f7fc;--bg2:#ffffff;--panel:#ffffff;--bd:#dde6f1;--cyan:#0a7ea4;--red:#e63946;--gold:#b26a00;--txt:#16273e;--muted:#5a6b82;--grad:linear-gradient(135deg,#1597c4,#6a5cff);background:var(--bg);color:var(--txt);min-height:100vh}
body.subpage .nav{background:transparent;border-bottom:none}
body.subpage .nav .brand{color:var(--txt)}
body.subpage .nav .links a{color:var(--muted)}
body.subpage .nav .links a:hover{color:#12233c;background:rgba(10,126,164,.1)}
body.subpage .nav .links a.active{color:#0a7ea4;background:rgba(10,126,164,.14);font-weight:700}
body.subpage .nav.scrolled{background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid #e4ebf4}
body.subpage .sec-head .k{color:#0a7ea4}
body.subpage .sec-head h2,body.subpage h2{color:#12233c}
body.subpage .sec-head p{color:var(--muted)}
body.subpage .card{background:#fff;border-color:var(--bd);box-shadow:0 2px 10px rgba(23,43,77,.05)}
body.subpage .card:hover{border-color:#7cc7e8;box-shadow:0 10px 26px rgba(23,43,77,.1)}
body.subpage .card h3{color:#12233c}
body.subpage .card p{color:var(--muted)}
body.subpage .card .ic{background:rgba(10,126,164,.09);color:#0a7ea4}
body.subpage .tag{background:rgba(10,126,164,.08);color:#0a7ea4;border-color:rgba(10,126,164,.2)}
body.subpage .badge{color:#b26a00;border-color:rgba(178,106,0,.4)}
body.subpage .note{color:#8a5300;background:rgba(255,176,32,.1);border-color:rgba(178,106,0,.35)}
body.subpage .shot{background:linear-gradient(135deg,rgba(10,126,164,.06),rgba(123,108,255,.06));border-color:#c6d3e4;color:#6b7c93}
body.subpage .shot b{color:#0a7ea4}
body.subpage .stats .s{background:#fff;border-color:var(--bd);box-shadow:0 2px 10px rgba(23,43,77,.05)}
body.subpage .stats .s b{color:#0a7ea4}
body.subpage .stats .s span{color:var(--muted)}
body.subpage footer{background:#fff;border-top:1px solid var(--bd)}
body.subpage .foot .col h4{color:#0a7ea4}
body.subpage .foot .col p{color:var(--muted)}
body.subpage .foot .col a:hover{color:#12233c}
body.subpage footer .bot{color:#8595ab;border-top-color:#e4ebf4}
body.subpage .more-link a{color:#b26a00}

/* ===== 主营产品页 ===== */
.lead{font-size:17px;line-height:1.9;color:var(--muted);max-width:940px;margin:0 0 28px}
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:8px}
.prod-card{margin:0;display:flex;flex-direction:column;background:#fff;border:1px solid var(--bd);border-radius:16px;overflow:hidden;box-shadow:0 2px 10px rgba(23,43,77,.05);transition:.22s}
.prod-card:hover{border-color:#7cc7e8;box-shadow:0 10px 26px rgba(23,43,77,.1);transform:translateY(-3px)}
.prod-img{overflow:hidden;background:#eef3f8}
.prod-img img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;display:block}
.prod-card figcaption{padding:16px 20px 20px}
.prod-card h3{margin:0 0 8px;font-size:20px;color:#12233c}
.prod-card p{margin:0;color:#5a6b82;font-size:15.5px;line-height:1.72}
.card.step .ic{font-size:15px;font-weight:800;font-style:normal}
@media(max-width:900px){.prod-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.prod-grid{grid-template-columns:1fr}}.g-group{font-size:17px;font-weight:700;color:#12233c;margin:26px 0 10px}.g-group:first-of-type{margin-top:4px}.shot-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:0 0 8px}.shot-cell{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;border-radius:12px;border:1px solid var(--bd);background:#eef3f8;transition:.2s}.shot-cell:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(23,43,77,.12);border-color:#7cc7e8}@media(max-width:900px){.shot-grid{grid-template-columns:repeat(3,1fr)}}@media(max-width:600px){.shot-grid{grid-template-columns:repeat(2,1fr)}}/* ===== 常见问题（FAQ）板块 ===== */
#faq .faq-list{display:flex;flex-direction:column;gap:12px;margin:4px 0 0}
#faq .faq-item{background:#fff;border:1px solid var(--bd);border-radius:14px;overflow:hidden;box-shadow:0 2px 10px rgba(23,43,77,.05)}
#faq .faq-item summary{list-style:none;cursor:pointer;padding:17px 22px;font-size:17px;font-weight:700;color:#12233c;display:flex;justify-content:space-between;align-items:center;gap:14px;line-height:1.5}
#faq .faq-item summary::-webkit-details-marker{display:none}
#faq .faq-item summary .plus{position:relative;width:20px;height:20px;flex:0 0 auto}
#faq .faq-item summary .plus::before,#faq .faq-item summary .plus::after{content:"";position:absolute;background:#0a7ea4;border-radius:2px;transition:.25s}
#faq .faq-item summary .plus::before{top:9px;left:0;width:20px;height:2px}
#faq .faq-item summary .plus::after{top:0;left:9px;width:2px;height:20px}
#faq .faq-item[open] summary .plus::after{transform:rotate(90deg);opacity:0}
#faq .faq-item .faq-a{padding:0 22px 20px;color:var(--muted);font-size:15.5px;line-height:1.85;text-align:justify;text-align-last:left}
#faq .faq-item .faq-a b{color:#12233c}