/* ===== 全局变量 ===== */
:root{
  --c-bg:#0A1628;
  --c-bg-2:#0F172A;
  --c-ink:#0F172A;
  --c-ink-2:#1E293B;
  --c-silver:#94A3B8;
  --c-mist:#F8FAFC;
  --c-cyan:#06B6D4;
  --c-cyan-2:#22D3EE;
  --c-cyan-dim:rgba(6,182,212,.15);
  --c-white:#fff;
  --c-line:rgba(148,163,184,.2);
  --c-line-d:rgba(148,163,184,.12);
  --radius:2px;
  --radius-lg:6px;
  --container:1200px;
  --f-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,sans-serif;
  --f-en:"Sora","PingFang SC",-apple-system,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:var(--f-cn);
  color:var(--c-ink);
  background:var(--c-mist);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul{list-style:none}
h1,h2,h3,h4{font-weight:700;line-height:1.25}

/* ===== 容器 ===== */
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
@media(max-width:768px){.container{padding:0 16px}}

/* ===== 通用区段 ===== */
.section{padding:96px 0;position:relative}
@media(max-width:768px){.section{padding:64px 0}}
.sec-head{text-align:center;max-width:760px;margin:0 auto 56px}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--f-en);font-size:13px;font-weight:600;letter-spacing:.15em;
  color:var(--c-cyan);text-transform:uppercase;margin-bottom:14px;
}
.sec-tag::before{content:"";width:24px;height:1px;background:var(--c-cyan)}
.sec-title{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-.01em;color:var(--c-ink)}
.sec-title em{color:var(--c-cyan);font-style:normal}
.sec-sub{margin-top:14px;color:#64748B;font-size:16px}

/* ===== 导航 ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background .35s,backdrop-filter .35s,box-shadow .35s;
}
.nav.scrolled{
  background:rgba(10,22,40,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 1px 0 rgba(6,182,212,.25),0 8px 32px rgba(0,0,0,.25);
}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;justify-content:space-between;
}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800}
.logo-mark{
  display:inline-flex;align-items:baseline;font-size:22px;letter-spacing:.02em;
}
.logo-mark .r{
  font-size:10px;vertical-align:super;margin-left:2px;
  border:1px solid var(--c-cyan);color:var(--c-cyan);
  padding:0 3px;border-radius:2px;line-height:1.3;font-weight:700;
}
.logo-sep{color:var(--c-silver);font-weight:300;margin:0 2px}
.logo-biz{font-size:20px;color:var(--c-cyan-2);letter-spacing:.04em}
.nav-menu{display:flex;align-items:center;gap:36px}
.nav-menu a{color:rgba(255,255,255,.78);font-size:15px;font-weight:500;transition:color .2s;position:relative}
.nav-menu a:hover{color:#fff}
.nav-menu a::after{
  content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;
  background:var(--c-cyan);transition:width .25s;
}
.nav-menu a:hover::after{width:100%}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 20px;background:var(--c-cyan);color:#fff!important;
  font-size:14px;font-weight:600;border-radius:var(--radius);
  transition:background .2s,transform .2s;
}
.nav-cta:hover{background:var(--c-cyan-2);transform:translateY(-1px)}
.nav-cta::after{display:none}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:6px}
.nav-toggle span{width:24px;height:2px;background:#fff;transition:.3s}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Hero / 一体化 Banner ===== */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  background:linear-gradient(160deg,#06101F 0%,#0A1628 45%,#0E1B30 100%);
  overflow:hidden;padding-top:72px;
}
/* 网格底纹 */
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(6,182,212,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(6,182,212,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse at 60% 40%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse at 60% 40%,#000 30%,transparent 75%);
}
/* 扫描线 */
.hero-scan{
  position:absolute;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.0) 0%,var(--c-cyan-2) 50%,rgba(34,211,238,0) 100%);
  box-shadow:0 0 24px rgba(34,211,238,.6);
  animation:scanMove 5s ease-in-out infinite;
}
@keyframes scanMove{
  0%{top:18%;opacity:0}
  10%{opacity:1}
  50%{top:78%;opacity:1}
  60%{opacity:0}
  100%{top:78%;opacity:0}
}
/* 光晕 */
.hero-glow{
  position:absolute;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(6,182,212,.22),transparent 65%);
  filter:blur(20px);animation:breathe 6s ease-in-out infinite;
  pointer-events:none;
}
.hero-glow.g1{top:-120px;right:-80px}
.hero-glow.g2{bottom:-180px;left:-120px;background:radial-gradient(circle,rgba(34,211,238,.16),transparent 65%);animation-delay:-3s}
@keyframes breathe{0%,100%{transform:scale(1);opacity:.7}50%{transform:scale(1.12);opacity:1}}

.hero-inner{
  position:relative;z-index:2;width:100%;
  max-width:var(--container);margin:0 auto;padding:0 24px;
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
}
@media(max-width:980px){.hero-inner{grid-template-columns:1fr;gap:32px}}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 16px;border:1px solid rgba(6,182,212,.35);
  background:rgba(6,182,212,.08);border-radius:40px;
  color:var(--c-cyan-2);font-size:13px;font-weight:600;letter-spacing:.04em;
  margin-bottom:28px;
  animation:fadeUp .8s .1s both;
}
.hero-eyebrow .dot{width:6px;height:6px;background:var(--c-cyan-2);border-radius:50%;box-shadow:0 0 10px var(--c-cyan-2);animation:blink 1.6s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{
  color:#fff;font-size:clamp(34px,5vw,58px);font-weight:800;line-height:1.12;
  letter-spacing:-.02em;margin-bottom:24px;
  animation:fadeUp .8s .2s both;
}
.hero h1 .hl{color:var(--c-cyan-2)}
.hero h1 .line2{display:block;font-size:.62em;color:var(--c-silver);font-weight:500;margin-top:8px}
.hero p.lead{
  color:rgba(255,255,255,.7);font-size:17px;max-width:560px;margin-bottom:36px;
  animation:fadeUp .8s .35s both;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;animation:fadeUp .8s .5s both}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:15px 32px;font-size:15px;font-weight:600;border-radius:var(--radius);
  transition:transform .2s,box-shadow .2s,background .2s;
}
.btn-primary{background:linear-gradient(135deg,var(--c-cyan),var(--c-cyan-2));color:#06121F;box-shadow:0 8px 24px rgba(6,182,212,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(6,182,212,.5)}
.btn-ghost{border:1px solid rgba(255,255,255,.25);color:#fff;background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--c-cyan);background:rgba(6,182,212,.1)}
.btn .arr{transition:transform .2s}
.btn:hover .arr{transform:translateX(3px)}

/* Hero 数据条 */
.hero-stats{display:flex;gap:36px;margin-top:48px;animation:fadeUp .8s .65s both}
.hero-stat{color:#fff}
.hero-stat .num{font-family:var(--f-en);font-size:30px;font-weight:800;color:var(--c-cyan-2);line-height:1}
.hero-stat .num .plus{font-size:.6em;vertical-align:super;margin-left:1px}
.hero-stat .lbl{font-size:13px;color:var(--c-silver);margin-top:6px}

/* Hero 右侧扫描可视化 */
.hero-visual{position:relative;height:440px;animation:fadeUp 1s .4s both}
@media(max-width:980px){.hero-visual{display:none}}
.scan-ring{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  border:1px solid rgba(6,182,212,.25);border-radius:50%;
}
.scan-ring.r1{width:420px;height:420px;animation:spin 20s linear infinite}
.scan-ring.r2{width:300px;height:300px;border-color:rgba(6,182,212,.4);border-style:dashed;animation:spin 14s linear infinite reverse}
.scan-ring.r3{width:180px;height:180px;border-color:rgba(34,211,238,.6)}
@keyframes spin{to{transform:translate(-50%,-50%) rotate(360deg)}}
.scan-core{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle,var(--c-cyan-2),var(--c-cyan) 60%,transparent 80%);
  filter:blur(2px);opacity:.5;animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{transform:translate(-50%,-50%) scale(1);opacity:.4}50%{transform:translate(-50%,-50%) scale(1.15);opacity:.75}}
.scan-dot{position:absolute;width:8px;height:8px;background:var(--c-cyan-2);border-radius:50%;box-shadow:0 0 12px var(--c-cyan-2)}
.scan-dot.d1{top:8%;left:50%;animation:orbit 8s linear infinite}
.scan-dot.d2{top:50%;right:8%;animation:orbit 12s linear infinite reverse}
.scan-dot.d3{bottom:14%;left:20%;animation:orbit 10s linear infinite}
@keyframes orbit{
  0%{transform:translate(0,0)}
  25%{transform:translate(20px,-20px)}
  50%{transform:translate(0,-40px)}
  75%{transform:translate(-20px,-20px)}
  100%{transform:translate(0,0)}
}

/* 滚动提示 */
.scroll-hint{
  position:absolute;bottom:28px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;
  color:rgba(255,255,255,.5);font-size:12px;letter-spacing:.2em;
  animation:fadeUp 1s 1s both;
}
.scroll-hint .mouse{width:22px;height:36px;border:1.5px solid rgba(255,255,255,.4);border-radius:12px;position:relative}
.scroll-hint .mouse::after{content:"";position:absolute;top:6px;left:50%;transform:translateX(-50%);width:3px;height:6px;background:var(--c-cyan-2);border-radius:2px;animation:wheel 1.6s infinite}
@keyframes wheel{0%{opacity:1;top:6px}100%{opacity:0;top:18px}}

@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}

/* ===== 核心业务 ===== */
.services{background:#fff}
.svc-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
@media(max-width:980px){.svc-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.svc-grid{grid-template-columns:1fr}}
.svc-card{
  position:relative;padding:36px 28px;border:1px solid var(--c-line);
  border-radius:var(--radius-lg);background:#fff;
  transition:transform .3s,box-shadow .3s,border-color .3s;
  overflow:hidden;
}
.svc-card::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--c-cyan),var(--c-cyan-2));
  transform:scaleX(0);transform-origin:left;transition:transform .3s;
}
.svc-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(10,22,40,.08);border-color:transparent}
.svc-card:hover::before{transform:scaleX(1)}
.svc-icon{
  width:52px;height:52px;border-radius:10px;
  background:var(--c-cyan-dim);color:var(--c-cyan);
  display:flex;align-items:center;justify-content:center;margin-bottom:22px;
}
.svc-card h3{font-size:20px;margin-bottom:10px}
.svc-card p{color:#64748B;font-size:14px;line-height:1.75;margin-bottom:18px}
.svc-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-cyan);font-size:14px;font-weight:600}
.svc-link .arr{transition:transform .2s}
.svc-link:hover .arr{transform:translateX(4px)}
.svc-num{position:absolute;top:24px;right:28px;font-family:var(--f-en);font-size:14px;color:#CBD5E1;font-weight:700}

/* ===== 应用领域 ===== */
.industries{background:linear-gradient(180deg,#F8FAFC 0%,#FFFFFF 100%)}
.ind-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:980px){.ind-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.ind-grid{grid-template-columns:1fr}}
.ind-card{
  position:relative;padding:28px 24px;border:1px solid var(--c-line);
  border-radius:var(--radius-lg);background:#fff;transition:.3s;overflow:hidden;
}
.ind-card:hover{border-color:var(--c-cyan);box-shadow:0 14px 36px rgba(6,182,212,.12);transform:translateY(-4px)}
.ind-ico{
  width:48px;height:48px;border-radius:10px;
  background:var(--c-cyan-dim);color:var(--c-cyan);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.ind-card h3{font-size:17px;margin-bottom:8px}
.ind-card p{color:#64748B;font-size:13px;line-height:1.7}
.ind-list{margin-top:12px;display:flex;flex-wrap:wrap;gap:6px}
.ind-list span{
  display:inline-block;padding:3px 10px;background:var(--c-mist);
  border:1px solid var(--c-line);font-size:12px;color:#475569;border-radius:20px;
}

/* ===== 高新企业认证 ===== */
.certify{
  background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.certify-inner{
  display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;
}
@media(max-width:980px){.certify-inner{grid-template-columns:1fr;gap:32px}}
.certify-text .sub{
  color:var(--c-cyan);font-size:14px;font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;margin-bottom:16px;display:inline-block;
}
.certify-text h2{font-size:clamp(24px,3.2vw,34px);margin-bottom:14px;line-height:1.3}
.certify-text p{color:#475569;font-size:15px;line-height:1.9;margin-bottom:14px}
.certify-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.certify-tags span{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;background:var(--c-cyan-dim);color:#0E7490;
  border-radius:24px;font-size:13px;font-weight:600;
}
.certify-img{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:linear-gradient(135deg,#0A1628,#0F172A);
  padding:18px;border:1px solid rgba(6,182,212,.25);
  box-shadow:0 20px 50px rgba(10,22,40,.12);
}
.certify-img img{width:100%;height:auto;border-radius:4px;display:block}
.certify-caption{
  margin-top:14px;text-align:center;color:#64748B;font-size:13px;
}
.certify-caption strong{color:var(--c-ink);font-weight:600}

/* ===== 资质荣誉 ===== */
.honors{background:linear-gradient(180deg,#F8FAFC 0%,#F1F5F9 100%)}
.honor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:980px){.honor-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.honor-grid{grid-template-columns:1fr}}
.honor-card{
  background:#fff;padding:24px;border:1px solid var(--c-line);
  border-radius:var(--radius-lg);text-align:center;transition:.3s;
}
.honor-card:hover{border-color:var(--c-cyan);transform:translateY(-4px);box-shadow:0 12px 30px rgba(6,182,212,.1)}
.honor-ico{
  width:52px;height:52px;border-radius:50%;background:var(--c-cyan-dim);
  color:var(--c-cyan);display:flex;align-items:center;justify-content:center;
  margin:0 auto 14px;
}
.honor-card h4{font-size:15px;margin-bottom:6px}
.honor-card p{font-size:12px;color:#64748B;line-height:1.6}

/* ===== 流程 ===== */
.process{background:#fff}
.proc-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;position:relative}
@media(max-width:980px){.proc-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:560px){.proc-grid{grid-template-columns:repeat(2,1fr)}}
.proc-step{
  position:relative;padding:24px 16px;text-align:center;
  border:1px solid var(--c-line);border-radius:var(--radius-lg);background:#fff;
  transition:.3s;
}
.proc-step:hover{border-color:var(--c-cyan);background:var(--c-mist)}
.proc-num{
  font-family:var(--f-en);font-size:28px;font-weight:800;color:var(--c-cyan);
  line-height:1;margin-bottom:10px;
}
.proc-step h4{font-size:15px;margin-bottom:6px}
.proc-step p{font-size:12px;color:#64748B;line-height:1.6}

/* ===== 案例展示 ===== */
.cases{background:linear-gradient(180deg,#F8FAFC 0%,#F1F5F9 100%)}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:980px){.case-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.case-grid{grid-template-columns:1fr}}
.case-item{
  background:#fff;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--c-line);
  transition:transform .35s,box-shadow .35s;
}
.case-item:hover{transform:translateY(-8px);box-shadow:0 22px 48px rgba(10,22,40,.12)}
.case-img{position:relative;aspect-ratio:4/3;overflow:hidden;background:#E2E8F0}
.case-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case-item:hover .case-img img{transform:scale(1.06)}
.case-img::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(10,22,40,.5));
  opacity:0;transition:opacity .35s;
}
.case-item:hover .case-img::after{opacity:1}
.case-tag{
  position:absolute;top:12px;left:12px;z-index:2;
  padding:4px 10px;background:rgba(6,182,212,.95);color:#fff;
  font-size:12px;font-weight:600;border-radius:2px;
}
.case-cap{padding:18px 20px}
.case-cap h3{font-size:16px;margin-bottom:6px}
.case-cap p{font-size:13px;color:#64748B;line-height:1.65}

/* ===== FAQ ===== */
.faq{background:#fff}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:768px){.faq-grid{grid-template-columns:1fr}}
.faq-item{
  border:1px solid var(--c-line);border-radius:var(--radius-lg);
  background:#fff;overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:var(--c-cyan)}
.faq-item.open{border-color:var(--c-cyan);box-shadow:0 8px 24px rgba(6,182,212,.08)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:20px 22px;text-align:left;font-size:15px;font-weight:600;color:var(--c-ink);
}
.faq-q-idx{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  background:var(--c-cyan-dim);color:var(--c-cyan);
  font-family:var(--f-en);font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.faq-q-text{flex:1}
.faq-q-icon{
  flex-shrink:0;width:18px;height:18px;position:relative;color:var(--c-cyan);
}
.faq-q-icon::before,.faq-q-icon::after{
  content:"";position:absolute;background:currentColor;transition:transform .3s;
}
.faq-q-icon::before{top:50%;left:0;right:0;height:2px;transform:translateY(-50%)}
.faq-q-icon::after{left:50%;top:0;bottom:0;width:2px;transform:translateX(-50%)}
.faq-item.open .faq-q-icon::after{transform:translateX(-50%) rotate(90deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .35s ease;
}
.faq-item.open .faq-a{max-height:360px}
.faq-a-inner{padding:0 22px 22px 62px;color:#64748B;font-size:14px;line-height:1.8}

/* ===== 关于我们 ===== */
.about{background:linear-gradient(180deg,#0A1628 0%,#0F172A 100%);color:#fff;position:relative;overflow:hidden}
.about::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(6,182,212,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(6,182,212,.04) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(ellipse at 30% 50%,#000,transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse at 30% 50%,#000,transparent 70%);
}
.about-inner{
  position:relative;display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center;
}
@media(max-width:980px){.about-inner{grid-template-columns:1fr;gap:32px}}
.about-img{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  aspect-ratio:4/3;box-shadow:0 24px 60px rgba(0,0,0,.4);
  border:1px solid rgba(6,182,212,.2);
}
.about-img img{width:100%;height:100%;object-fit:cover}
.about-img::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(6,182,212,.15),transparent 50%);
}
.about-badge{
  position:absolute;bottom:16px;right:16px;z-index:2;
  background:rgba(10,22,40,.85);backdrop-filter:blur(8px);
  padding:10px 16px;border-radius:4px;border:1px solid rgba(6,182,212,.3);
  font-size:12px;color:var(--c-cyan-2);font-weight:600;letter-spacing:.05em;
}
.about-text h2{color:#fff;font-size:clamp(26px,3.5vw,36px);margin-bottom:8px}
.about-text .sub{color:var(--c-cyan-2);font-size:14px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;margin-bottom:22px}
.about-text p{color:rgba(255,255,255,.72);font-size:15px;line-height:1.95;margin-bottom:18px}
.about-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px;
  padding-top:32px;border-top:1px solid rgba(148,163,184,.15);
}
@media(max-width:640px){.about-stats{grid-template-columns:repeat(2,1fr)}}
.about-stat .num{font-family:var(--f-en);font-size:32px;font-weight:800;color:var(--c-cyan-2);line-height:1}
.about-stat .num .plus{font-size:.55em;vertical-align:super}
.about-stat .lbl{font-size:13px;color:var(--c-silver);margin-top:6px}

/* ===== 联系我们 ===== */
.contact{background:#fff}
.contact-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
@media(max-width:980px){.contact-inner{grid-template-columns:1fr}}
.contact-list{display:flex;flex-direction:column;gap:4px}
.contact-row{
  display:flex;align-items:center;gap:18px;padding:22px 0;
  border-bottom:1px solid var(--c-line);
}
.contact-row:last-child{border-bottom:none}
.contact-ico{
  flex-shrink:0;width:46px;height:46px;border-radius:10px;
  background:var(--c-cyan-dim);color:var(--c-cyan);
  display:flex;align-items:center;justify-content:center;
}
.contact-meta .lbl{font-size:12px;color:#94A3B8;letter-spacing:.05em;margin-bottom:4px}
.contact-meta .val{font-size:16px;font-weight:600;color:var(--c-ink)}
.contact-meta .val a{color:var(--c-cyan)}
.contact-meta .val a:hover{text-decoration:underline}

.qr-box{
  background:linear-gradient(160deg,#0A1628,#0F172A);
  border-radius:var(--radius-lg);padding:32px;text-align:center;
  border:1px solid rgba(6,182,212,.2);
}
.qr-box h3{color:#fff;font-size:18px;margin-bottom:6px}
.qr-box p{color:rgba(255,255,255,.6);font-size:13px;margin-bottom:24px}
.qr-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.qr-item{
  background:rgba(255,255,255,.04);border:1px solid rgba(148,163,184,.15);
  border-radius:8px;padding:18px 12px;
}
.qr-item .qr-img{
  width:130px;height:130px;background:#fff;border-radius:6px;
  margin:0 auto 12px;display:flex;align-items:center;justify-content:center;
}
.qr-item .qr-img img{width:118px;height:118px;object-fit:contain;border-radius:4px}
.qr-item .qr-name{color:#fff;font-size:14px;font-weight:600}
.qr-item .qr-desc{color:rgba(255,255,255,.55);font-size:12px;margin-top:2px}

/* CTA 条 */
.cta-bar{
  background:linear-gradient(135deg,#06B6D4,#22D3EE);
  padding:36px 0;text-align:center;color:#06121F;
}
.cta-bar h2{font-size:clamp(22px,3vw,30px);margin-bottom:8px}
.cta-bar p{font-size:15px;opacity:.85;margin-bottom:20px}
.cta-bar .btn{background:#06121F;color:#fff}
.cta-bar .btn:hover{background:#0F172A}

/* ===== 底部 ===== */
.footer{background:#070E1A;color:rgba(255,255,255,.6);padding:64px 0 0}
.footer-top{
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;
  padding-bottom:48px;border-bottom:1px solid rgba(148,163,184,.12);
}
@media(max-width:768px){.footer-top{grid-template-columns:1fr;gap:32px}}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:360px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:14px;transition:color .2s;display:inline-flex;align-items:center;gap:6px}
.footer-col ul a:hover{color:var(--c-cyan-2)}
.footer-col ul a .ext{font-size:11px;opacity:.5}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  padding:24px 0;font-size:13px;
}
.footer-bottom a{color:var(--c-cyan-2);transition:color .2s}
.footer-bottom a:hover{color:#fff}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .tech-support{color:rgba(255,255,255,.55)}
.footer-bottom .tech-support a{color:var(--c-cyan-2);font-weight:600}
.footer-bottom .tech-support a:hover{color:#fff;text-decoration:underline}
@media(max-width:640px){.footer-bottom{flex-direction:column;text-align:center}}

/* 滚动渐入 */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:translateY(0)}

/* 城市分站链接区 */
.city-links{background:#050A12;padding:28px 0 24px;border-top:1px solid rgba(6,182,212,.15)}
.city-links h4{color:#fff;font-size:14px;margin-bottom:16px;font-weight:600;letter-spacing:.05em;display:flex;align-items:center;gap:8px}
.city-links h4::before{content:"";display:inline-block;width:3px;height:14px;background:var(--c-cyan);border-radius:2px}
.city-links-inner{display:flex;flex-wrap:wrap;gap:8px 10px}
.city-links-inner a{display:inline-block;padding:6px 12px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:3px;font-size:12px;color:rgba(255,255,255,.75);transition:.2s}
.city-links-inner a:hover{background:rgba(6,182,212,.15);color:var(--c-cyan-2);border-color:var(--c-cyan)}
@media(max-width:640px){.city-links-inner{gap:6px 8px}.city-links-inner a{font-size:11px;padding:5px 10px}}

/* 移动端导航菜单 */
.mobile-menu{
  position:fixed;top:72px;left:0;right:0;z-index:99;
  background:rgba(10,22,40,.97);backdrop-filter:blur(14px);
  padding:24px;display:none;flex-direction:column;gap:20px;
  border-top:1px solid rgba(6,182,212,.2);
}
.mobile-menu.open{display:flex}
.mobile-menu a{color:#fff;font-size:16px;padding:8px 0;border-bottom:1px solid rgba(148,163,184,.12)}
.mobile-menu .nav-cta{align-self:flex-start}
@media(max-width:768px){
  .nav-menu{display:none}
  .nav-toggle{display:flex}
}