:root{
  --blue-900:#04173a;
  --blue-800:#0a2350;
  --blue-700:#0e3a8c;
  --blue-600:#1557ff;
  --blue-500:#2f6bff;
  --cyan:#00c6ff;
  --cyan-soft:#5fd6ff;
  --ink:#0f1f3d;
  --ink-2:#46566f;
  --muted:#7a8aa3;
  --bg:#f4f8ff;
  --bg-2:#eaf1ff;
  --card:#ffffff;
  --line:#dce6f7;
  --radius:16px;
  --shadow:0 12px 30px rgba(13,58,140,.10);
  --shadow-lg:0 22px 50px rgba(13,58,140,.16);
  --maxw:1160px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) 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:12px}
.brand-logo{
  width:40px;height:40px;border-radius:11px;
  background:linear-gradient(135deg,var(--blue-600),var(--cyan));
  color:#fff;font-weight:800;font-size:20px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(21,87,255,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:15px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{font-size:14px;color:var(--ink-2);font-weight:600;transition:color .2s}
.nav-links a:hover{color:var(--blue-600)}
.nav-cta{
  background:linear-gradient(135deg,var(--blue-600),var(--cyan));
  color:#fff!important;padding:9px 18px;border-radius:999px;
  box-shadow:0 8px 20px rgba(21,87,255,.30);
}
.nav-cta:hover{filter:brightness(1.06)}
.nav-toggle{display:none;background:none;border:0;font-size:24px;color:var(--ink);cursor:pointer}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(160deg,var(--blue-900),var(--blue-700) 55%,var(--blue-600));
  padding:84px 0 72px}
.hero-bg{position:absolute;inset:0;opacity:.55;
  background:
    radial-gradient(620px 360px at 12% 8%,rgba(0,198,255,.35),transparent 60%),
    radial-gradient(560px 420px at 92% 90%,rgba(47,107,255,.45),transparent 60%),
    repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 26px);
}
.hero-inner{position:relative;z-index:1}
.hero-badge{display:inline-block;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);
  padding:7px 16px;border-radius:999px;margin-bottom:18px;letter-spacing:.3px}
.hero-title{font-size:clamp(28px,4.6vw,52px);line-height:1.18;font-weight:800;letter-spacing:-.5px}
.hero-title span{color:var(--cyan-soft)}
.hero-sub{margin:18px 0 28px;max-width:680px;color:rgba(255,255,255,.86);font-size:clamp(15px,1.7vw,18px)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;
  padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;
  cursor:pointer;border:0;transition:transform .15s,filter .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(135deg,var(--cyan),var(--blue-500));color:#04245e;
  box-shadow:0 12px 26px rgba(0,198,255,.35)}
.btn-primary:hover{filter:brightness(1.05)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.2)}
.btn-block{width:100%}

.hero-stats{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:46px}
.hero-stats li{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);
  border-radius:14px;padding:16px;text-align:center}
.hero-stats strong{display:block;font-size:24px;color:var(--cyan-soft)}
.hero-stats span{font-size:12.5px;color:rgba(255,255,255,.78)}

/* ---------- 通用区块 ---------- */
.section{padding:72px 0}
.section-alt{background:var(--bg-2)}
.section-head{text-align:center;max-width:720px;margin:0 auto 42px}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:800;color:var(--ink);letter-spacing:-.3px}
.section-head p{margin-top:12px;color:var(--ink-2);font-size:16px}
.section-city{padding:0 0 72px;margin-top:-30px}
.section-contact{background:linear-gradient(160deg,var(--blue-800),var(--blue-600));color:#fff}

/* ---------- 卡片 ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}

.grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}

.service .service-ico{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:26px;background:linear-gradient(135deg,var(--bg-2),#fff);border:1px solid var(--line);margin-bottom:14px}
.service h3{font-size:18px;margin-bottom:8px}
.service p{color:var(--ink-2);font-size:14px}
.ticks{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.ticks li{font-size:12px;color:var(--blue-700);background:var(--bg-2);padding:4px 10px;border-radius:999px;font-weight:600}

.adv h3{font-size:17px;margin-bottom:10px;color:var(--blue-700)}
.adv p{color:var(--ink-2);font-size:14px}

.case .case-tag{display:inline-block;font-size:12px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--blue-600),var(--cyan));padding:4px 12px;border-radius:999px;margin-bottom:12px}
.case h3{font-size:17px;margin-bottom:8px}
.case p{color:var(--ink-2);font-size:14px}

/* ---------- 城市本地化 banner ---------- */
.city-banner{display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:linear-gradient(135deg,#fff,var(--bg-2));
  border:1px solid var(--line);border-radius:22px;padding:30px 34px;box-shadow:var(--shadow-lg)}
.city-banner h2{font-size:22px;color:var(--blue-700);margin-bottom:8px}
.city-banner p{color:var(--ink-2);max-width:640px;font-size:15px}

/* ---------- FAQ ---------- */
.faq-list{max-width:1080px;margin:0 auto;display:grid;grid-template-columns:repeat(2,1fr);gap:14px 22px;align-items:start}
.faq{background:#fff;border:1px solid var(--line);border-radius:14px;padding:4px 20px;box-shadow:var(--shadow)}
.faq summary{cursor:pointer;font-weight:700;font-size:16px;padding:16px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;color:var(--blue-600);font-weight:700;flex:0 0 auto}
.faq[open] summary::after{content:"−"}
.faq p{padding:0 0 18px;color:var(--ink-2);font-size:15px;line-height:1.7}

/* ---------- 联系（左右平衡） ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.contact-info h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.25}
.contact-info>p{margin-top:12px;color:rgba(255,255,255,.82);max-width:440px}
.contact-lead{margin-top:10px;color:rgba(255,255,255,.72);font-size:14px;line-height:1.7;max-width:440px}
.trust-list{list-style:none;margin:22px 0;display:flex;flex-direction:column;gap:10px}
.trust-list li{font-size:14.5px;color:rgba(255,255,255,.92)}
.contact-list{list-style:none;display:flex;flex-direction:column}
.contact-list li{display:flex;align-items:flex-start;gap:12px;padding:12px 0;border-top:1px solid rgba(255,255,255,.14)}
.contact-list li:first-child{border-top:0}
.c-ico{flex:0 0 38px;width:38px;height:38px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.14);border-radius:10px;font-size:18px}
.c-meta{display:flex;flex-direction:column;line-height:1.35}
.c-meta i{font-style:normal;font-size:12px;color:rgba(255,255,255,.6)}
.c-meta b{font-size:15px;font-weight:600;color:#fff}
.c-meta b a{color:#fff;border-bottom:1px dashed rgba(255,255,255,.5)}

.contact-form{background:#fff;color:var(--ink);padding:28px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field-full{grid-column:1/-1}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-form label{font-size:13px;font-weight:700;color:var(--ink-2)}
.contact-form input,.contact-form select,.contact-form textarea{
  font-family:inherit;font-size:14px;padding:11px 13px;border:1px solid var(--line);
  border-radius:11px;background:#fbfdff;color:var(--ink);transition:border .2s,box-shadow .2s}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{
  outline:none;border-color:var(--blue-500);box-shadow:0 0 0 3px rgba(47,107,255,.15)}
.contact-form textarea{resize:vertical}
.form-tip{font-size:13px;font-weight:600;margin-top:10px;min-height:18px}
.form-tip.ok{color:#0a8f4f}
.form-tip.err{color:#d23b3b}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--blue-900);color:rgba(255,255,255,.82);padding:54px 0 96px}
.footer-top{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between;padding-bottom:26px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand strong{font-size:17px;color:#fff}
.footer-brand p{font-size:13.5px;margin-top:8px;color:rgba(255,255,255,.7)}
.footer-domains{color:var(--cyan-soft)!important;font-weight:600}
.footer-nav{display:flex;flex-wrap:wrap;gap:18px;align-items:flex-start}
.footer-nav a{font-size:14px;color:rgba(255,255,255,.78)}
.footer-nav a:hover{color:var(--cyan-soft)}
.footer-cities{padding:26px 0 8px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-cities h4{font-size:14px;color:#fff;margin-bottom:14px}
.city-links{display:flex;flex-wrap:wrap;gap:8px;max-width:100%}
.city-links a{font-size:12.5px;color:rgba(255,255,255,.78);background:rgba(255,255,255,.07);
  padding:5px 11px;border-radius:999px;border:1px solid rgba(255,255,255,.12);transition:.2s}
.city-links a:hover{background:rgba(0,198,255,.18);color:#fff;border-color:rgba(0,198,255,.4)}
.btn-city-all{margin-top:16px;background:none;border:1px solid rgba(255,255,255,.3);color:#fff;
  padding:9px 18px;border-radius:999px;cursor:pointer;font-size:13px;font-weight:600;transition:.2s}
.btn-city-all:hover{background:rgba(0,198,255,.18);border-color:rgba(0,198,255,.5)}
.footer-bottom{margin-top:22px;font-size:12.5px;color:rgba(255,255,255,.6);display:flex;flex-direction:column;gap:8px}
.footer-row{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
.footer-beian a{color:rgba(255,255,255,.75);text-decoration:none}
.footer-beian a:hover{color:#fff}

/* ---------- 全国分站弹窗 ---------- */
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:20px}
.modal[hidden]{display:none}
.modal-mask{position:absolute;inset:0;background:rgba(4,23,58,.55);backdrop-filter:blur(2px)}
.modal-box{position:relative;background:#fff;width:min(920px,94vw);max-height:84vh;border-radius:18px;
  overflow:hidden;display:flex;flex-direction:column;box-shadow:0 30px 70px rgba(4,23,58,.4)}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--line)}
.modal-head h3{font-size:18px;color:var(--ink)}
.modal-close{background:none;border:0;font-size:26px;line-height:1;color:var(--muted);cursor:pointer}
.modal-close:hover{color:var(--ink)}
.modal-body{padding:20px 22px;overflow:auto}
.province-group{margin-bottom:18px}
.province-group h5{font-size:14px;color:var(--blue-700);margin-bottom:10px}
.province-cities{display:flex;flex-wrap:wrap;gap:8px}
.province-cities a{font-size:13px;color:var(--ink-2);background:var(--bg-2);padding:6px 12px;
  border-radius:999px;border:1px solid var(--line);transition:.2s}
.province-cities a:hover{background:var(--blue-600);color:#fff;border-color:var(--blue-600)}

/* ---------- 右侧飘窗 ---------- */
.float-bar{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:80;
  display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.float-btn{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow);border-radius:999px;padding:10px 14px;cursor:pointer;color:var(--blue-700);
  font-weight:700;font-size:13px;transition:transform .15s,background .2s,color .2s}
.float-btn:hover{transform:translateX(-3px);background:linear-gradient(135deg,var(--blue-600),var(--cyan));
  color:#fff;border-color:transparent}
.fb-ico{font-size:18px;line-height:1}
.float-pop{position:absolute;right:72px;top:50%;transform:translateY(-50%);width:220px;
  background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);
  padding:16px;color:var(--ink);text-align:center}
.float-pop[hidden]{display:none}
.float-pop .fp-label{font-size:12px;color:var(--muted);margin-bottom:4px}
.float-pop .fp-phone{font-size:19px;font-weight:800;color:var(--blue-700);display:block;margin-bottom:6px}
.float-pop .fp-tip{font-size:12px;color:var(--ink-2);margin-bottom:8px}
.float-pop .fp-qr{width:120px;height:120px;margin:6px auto 0;border-radius:10px;object-fit:cover;background:#fff;display:block}

/* ---------- 底部条（可关闭） ---------- */
.bottom-bar{position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;padding:0}
.bottom-bar[hidden]{display:none}
.bb-card{width:100%;background:linear-gradient(135deg,rgba(10,35,80,.4),rgba(21,87,255,.4));color:#fff;text-shadow:0 1px 3px rgba(0,0,0,.45);
  border-radius:0;box-shadow:0 -8px 30px rgba(4,23,58,.3);display:flex;align-items:center;justify-content:center;gap:16px;
  padding:12px 24px;position:relative;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.bb-text{display:flex;flex-direction:column;gap:2px}
.bb-text strong{font-size:15px}
.bb-text span{font-size:13px;color:rgba(255,255,255,.82)}
.bb-qr{width:54px;height:54px;flex:0 0 54px;border-radius:8px;object-fit:cover;background:#fff;display:block}
.bb-call{background:linear-gradient(135deg,var(--cyan),var(--blue-500));color:#04245e;
  font-weight:800;padding:10px 18px;border-radius:999px;text-decoration:none;font-size:14px;white-space:nowrap}
.bb-close{position:absolute;top:-10px;right:10px;width:28px;height:28px;border-radius:50%;background:#fff;
  border:1px solid var(--line);color:var(--ink);font-size:18px;line-height:1;cursor:pointer;box-shadow:var(--shadow)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .grid-5{grid-template-columns:repeat(3,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  .nav-links{position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;
    gap:0;padding:8px 20px 16px;border-bottom:1px solid var(--line);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--line);width:100%}
  .nav-cta{text-align:center}
  .nav-toggle{display:block}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .grid-5{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr}
  .faq-list{grid-template-columns:1fr}
  .city-banner{flex-direction:column;align-items:flex-start;padding:24px}
  .contact-grid{grid-template-columns:1fr;gap:28px}
  .field-row{grid-template-columns:1fr}
  .section{padding:56px 0}
  .float-bar{right:10px}
  .float-pop{right:62px;width:190px}
  .bb-text span{display:none}
  .bb-qr{display:none}
  .site-footer{padding-bottom:110px}
}
@media (max-width:420px){
  .grid-5{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr}
}

/* ---------- 本地化服务区块（分站差异化，主站 hidden 不渲染） ---------- */
.section-local{background:linear-gradient(180deg,#f6f9ff,#eaf1ff)}
.local-sub{margin:26px 0 12px;font-size:18px;color:var(--blue-800);font-weight:600}
.local-cases{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.local-cases li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;font-size:15px;color:var(--ink-2);box-shadow:var(--shadow)}
.local-faq{max-width:880px}
.local-faq .faq{background:#fff}
@media (max-width:760px){
  .local-cases{grid-template-columns:1fr}
}