:root{
  --red-900:#a3000c;
  --red-700:#c5000e;
  --red-600:#e50011;
  --red-050:#fef3f4;
  --ink:#333333;
  --muted:#666666;
  --light:#999999;
  --line:#ececec;
  --bg:#fafafa;
  --radius-lg:18px;
  --radius-md:14px;
  --shadow-sm:0 6px 20px rgba(229,0,17,.06);
  --shadow-md:0 16px 40px rgba(229,0,17,.13);
}
#brand{display:none;}
.appx .nav-link,.appx .plain,.appx .tool-btn{color:#333;}
.appx button.burger{color:#333;}

/* ============ 首屏 Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  color:#333;
  padding:120px 0 120px;
  background:url(/template/pc/skin/css/../images/about_advantages.jpg) no-repeat;
  background-size:cover;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px);
  background-size:58px 58px;
  pointer-events:none;
}
.hero .container{position:relative;z-index:1;}

.hero-grid{
  display:grid;
  grid-template-columns:1.3fr 1fr;
  gap:60px;
  align-items:center;
}

.hero-badge{
  display:inline-block;
  margin-bottom:24px;
  padding:7px 22px;
  font-size:13.5px;
  letter-spacing:1.2px;
  color:#333;
  background:rgba(0,0,0,.14);
  border:1px solid rgba(0,0,0,.3);
  border-radius:999px;
  backdrop-filter:blur(6px);
}
.hero h1{
  font-size:clamp(28px,3.6vw,42px);
  font-weight:700;
  letter-spacing:2px;
  line-height:1.4;
  margin-bottom:22px;
  animation:fadeUp .8s ease both;
}
.hero-lead{
  margin:0 0 34px;
  font-size:16px;
  line-height:2.05;
  color:rgba(0,0,0,.93);
  animation:fadeUp .8s .12s ease both;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  animation:fadeUp .8s .24s ease both;
}

.hero-panel{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
  animation:fadeUp .8s .3s ease both;
}
.hero-panel-item{
  padding:22px 16px;
  text-align:center;
  background:rgba(255,255,255,.4);
  border:1px solid rgba(255,255,255,.6);
  border-radius:var(--radius-md);
  backdrop-filter:blur(6px);
  transition:all .3s ease;
}
.hero-panel-item:hover{
  background:rgba(255,255,255,.18);
  transform:translateY(-4px);
}
.hero-panel-item em{
  display:block;
  margin-bottom:10px;
  font-size:24px;
  color:#333;
}
.hero-panel-item strong{
  display:block;
  font-size:15px;
  font-weight:700;
  letter-spacing:.8px;
  color:#333;
}


/* ============ 按钮 ============ */
.btn{
  display:inline-block;
  padding:14px 36px;
  font-size:15.5px;
  font-weight:600;
  letter-spacing:1px;
  border-radius:999px;
  border:2px solid transparent;
  transition:all .3s ease;
}
.btn-primary{background:#fff;color:var(--red-600);}
.btn-primary:hover{transform:translateY(-3px);}
.btn-ghost{border-color:var(--red-600);color:var(--red-600);;}
.btn-ghost:hover{background:var(--red-600);color:#fff;border:solid 2px var(--red-600);transform:translateY(-3px);}

/* ============ 区块通用 ============ */
.section{padding:82px 0;}
.section-tint{background:var(--bg);}

.section-head{
  max-width:860px;
  margin:0 auto 54px;
  text-align:center;
}
.section-title{
  position:relative;
  display:inline-block;
  padding-bottom:16px;
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  letter-spacing:1.2px;
  color:var(--ink);
}
.section-title::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  transform:translateX(-50%);
  width:64px;
  height:4px;
  border-radius:3px;
  background:linear-gradient(90deg,var(--red-900),var(--red-600));
}
.section-sub{
  margin-top:18px;
  font-size:15.5px;
  color:var(--muted);
}

/* ============ 图片占位块 ============ */
.media{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:12px;
  min-height:220px;
  text-align:center;
  font-size:14px;
  letter-spacing:1px;
  color:var(--light);
  border:1px dashed #d5d5d5;
  background:linear-gradient(135deg,#fafafa 0%,#f0f0f0 100%);
  overflow:hidden;
  transition:all .3s ease;
}
.media img{
    display:block;
    width:100%;
    height:100%;
}

/* ============ 研发与技术积淀 ============ */
.rd-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
}
.rd-card{
  position:relative;
  padding:34px 24px 30px;
  background:#fff;
  border:1px solid var(--line);
  transition:all .35s ease;
  overflow:hidden;
}
.rd-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:linear-gradient(90deg,var(--red-900),var(--red-600));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .35s ease;
}
.rd-card:hover{
  transform:translateY(-6px);
  border-color:#f5d5d8;
}
.rd-card:hover::before{transform:scaleX(1);}

.rd-icon{
  display:flex;
  align-items:center;
  justify-content:center;
  width:54px;
  height:54px;
  margin-bottom:18px;
  border-radius:15px;
  color:var(--red-600);
  background:linear-gradient(135deg,#fde7e8,#fbd2d5);
  transition:transform .3s ease;
}
.rd-card:hover .rd-icon{transform:scale(1.08) rotate(-5deg);}
.rd-icon em{font-size:22px;}

.rd-card h3{
  margin-bottom:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:.4px;
  color:var(--ink);
}
.rd-card p{
  font-size:14.5px;
  line-height:1.85;
  color:var(--muted);
}

/* ============ 资质与认证 ============ */
.cert-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  background:#fff;
  border:1px solid var(--line);
  overflow:hidden;
}
.cert-cell{
  position:relative;
  padding:40px 28px;
  text-align:center;
  transition:all .35s ease;
}
.cert-cell + .cert-cell::before{
  content:"";
  position:absolute;
  left:0;
  top:24px;
  bottom:24px;
  width:1px;
  background:var(--line);
}
.cert-cell:hover{
  background:var(--red-050);
}
.cert-cell:hover::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  transform:translateX(-50%);
  width:48px;
  height:3px;
  border-radius:3px 3px 0 0;
  background:linear-gradient(90deg,var(--red-900),var(--red-600));
}

.cert-cell-icon{
  display:flex;
  align-items:center;
  justify-content:center;
  width:60px;
  height:60px;
  margin:0 auto 18px;
  border-radius:50%;
  color:#fff;
  background:linear-gradient(135deg,var(--red-900),var(--red-600));
  transition:transform .35s ease;
}
.cert-cell:hover .cert-cell-icon{transform:scale(1.08) rotate(-5deg);}
.cert-cell-icon em{font-size:24px;}

.cert-cell h3{
  margin-bottom:8px;
  font-size:16.5px;
  font-weight:700;
  letter-spacing:.4px;
  color:var(--ink);
}
.cert-cell p{
  font-size:13.5px;
  line-height:1.75;
  color:var(--muted);
}

/* ============ 生产硬件与装配 ============ */
.prod-layout{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:50px;
  align-items:center;
}
.prod-body h3{
  margin-bottom:16px;
  font-size:22px;
  font-weight:700;
  letter-spacing:.6px;
  color:var(--ink);
}
.prod-body > p{
  margin-bottom:16px;
  font-size:15.5px;
  line-height:1.95;
  color:var(--muted);
}
.prod-body > p:last-child{margin-bottom:0;}

.prod-points{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  margin-top:26px;
}
.prod-point{
  display:flex;
  align-items:center;
  gap:12px;
  padding:16px 18px;
  background:var(--red-050);
  border:1px solid #f8d8da;
  transition:all .3s ease;
}
.prod-point:hover{
  background:#fff;
  transform:translateY(-3px);
}
.prod-point em{
  flex-shrink:0;
  font-size:18px;
  color:var(--red-600);
}
.prod-point span{
  font-size:14.5px;
  font-weight:600;
  color:var(--ink);
}

/* ============ 工况模拟测试（重新优化布局） ============ */
/* 第一层：介绍行 —— 左图右文 */
.sim-intro{
  display:grid;
  grid-template-columns:1fr 1.15fr;
  gap:50px;
  align-items:center;
  margin-bottom:44px;
}
.sim-intro-text h3{
  position:relative;
  padding-left:18px;
  margin-bottom:16px;
  font-size:22px;
  font-weight:700;
  letter-spacing:.6px;
  color:var(--ink);
}
.sim-intro-text h3::before{
  content:"";
  position:absolute;
  left:0;
  top:5px;
  bottom:5px;
  width:4px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--red-600),var(--red-900));
}
.sim-intro-text p{
  margin-bottom:14px;
  font-size:15.5px;
  line-height:1.95;
  color:var(--muted);
}
.sim-intro-text p:last-child{margin-bottom:0;}

/* 第二层：四栏数据卡 */
.sim-data-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-bottom:28px;
}
.sim-data-card{
  position:relative;
  padding:32px 24px 28px;
  background:#fff;
  border:1px solid var(--line);
  transition:all .35s ease;
  overflow:hidden;
}
.sim-data-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:linear-gradient(90deg,var(--red-900),var(--red-600));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .35s ease;
}
.sim-data-card:hover{
  transform:translateY(-6px);
  border-color:#f5d5d8;
}
.sim-data-card:hover::before{transform:scaleX(1);}

.sim-data-icon{
  display:flex;
  align-items:center;
  justify-content:center;
  width:52px;
  height:52px;
  margin-bottom:18px;
  border-radius:14px;
  color:var(--red-600);
  background:linear-gradient(135deg,#fde7e8,#fbd2d5);
  transition:transform .3s ease;
}
.sim-data-card:hover .sim-data-icon{transform:scale(1.08) rotate(-5deg);}
.sim-data-icon em{font-size:22px;}

.sim-data-card h4{
  margin-bottom:8px;
  font-size:16.5px;
  font-weight:700;
  letter-spacing:.4px;
  color:var(--ink);
}
.sim-data-card p{
  font-size:14px;
  line-height:1.8;
  color:var(--muted);
}

/* 第三层：温馨提示 */
.sim-notice{
  padding:22px 28px;
  display:flex;
  gap:16px;
  align-items:flex-start;
  font-size:15px;
  color:var(--muted);
  background:#fff5f5;
  border-left:5px solid var(--red-600);
}
.sim-notice em{
  flex-shrink:0;
  margin-top:3px;
  font-size:20px;
  color:var(--red-600);
}
.sim-notice strong{color:var(--red-700);}

/* ============ 整机综合表现 ============ */
.perf-grid{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:18px;
}
.perf-card{
  position:relative;
  padding:32px 20px 28px;
  text-align:center;
  background:#fff;
  border:1px solid var(--line);
  transition:all .35s ease;
  overflow:hidden;
}
.perf-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:4px;
  background:linear-gradient(90deg,var(--red-900),var(--red-600));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .35s ease;
}
.perf-card:hover{
  transform:translateY(-8px);
  border-color:#f5d5d8;
}
.perf-card:hover::before{transform:scaleX(1);}

.perf-icon{
  display:flex;
  align-items:center;
  justify-content:center;
  width:56px;
  height:56px;
  margin:0 auto 16px;
  border-radius:50%;
  color:#fff;
  background:linear-gradient(135deg,var(--red-900),var(--red-600));
  box-shadow:0 10px 20px rgba(229,0,17,.22);
  transition:transform .35s ease;
}
.perf-card:hover .perf-icon{transform:scale(1.08) rotate(-5deg);}
.perf-icon em{font-size:23px;}

.perf-card h3{
  margin-bottom:8px;
  font-size:15.5px;
  font-weight:700;
  letter-spacing:.4px;
  color:var(--ink);
}
.perf-card p{
  font-size:13px;
  line-height:1.7;
  color:var(--muted);
}

/* ============ 产品覆盖卡 ============ */
.perf-coverage{
  margin:32px auto 0;
  padding:36px 40px;
  background:#fff;
  border:1px solid var(--line);
}

.coverage-title{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:20px;
  font-size:16.5px;
  font-weight:700;
  letter-spacing:.6px;
  color:var(--ink);
}
.coverage-title em{
  display:flex;
  align-items:center;
  justify-content:center;
  width:32px;
  height:32px;
  border-radius:9px;
  color:#fff;
  background:linear-gradient(135deg,var(--red-900),var(--red-600));
  font-size:15px;
  box-shadow:0 6px 14px rgba(229,0,17,.22);
}

.coverage-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.coverage-tag{
  display:inline-flex;
  align-items:center;
  padding:9px 20px;
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.3px;
  color:var(--ink);
  background:var(--red-050);
  border:1px solid #f8d8da;
  border-radius:999px;
  transition:all .25s ease;
}
.coverage-tag:hover{
  color:#fff;
  background:var(--red-600);
  border-color:var(--red-600);
  transform:translateY(-2px);
  box-shadow:0 8px 16px rgba(229,0,17,.22);
}

.coverage-divider{
  height:1px;
  margin:28px 0;
  background:linear-gradient(90deg,transparent,var(--line) 12%,var(--line) 88%,transparent);
}

.coverage-bottom{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:28px;
}
.coverage-item{
  display:flex;
  gap:16px;
  align-items:flex-start;
}
.coverage-item-icon{
  flex-shrink:0;
  display:flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  border-radius:12px;
  color:var(--red-600);
  background:linear-gradient(135deg,#fde7e8,#fbd2d5);
  transition:transform .3s ease;
}
.coverage-item:hover .coverage-item-icon{transform:scale(1.08) rotate(-5deg);}
.coverage-item-icon em{font-size:19px;}

.coverage-item-body strong{
  display:block;
  margin-bottom:5px;
  font-size:15.5px;
  font-weight:700;
  letter-spacing:.4px;
  color:var(--ink);
}
.coverage-item-body span{
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
}

/* ============ 售后保障 ============ */
.service-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px;
}
.service-card{
  position:relative;
  display:flex;
  gap:22px;
  padding:32px 32px;
  background:#fff;
  border:1px solid var(--line);
  transition:all .35s ease;
  overflow:hidden;
}
.service-card::before{
  content:"";
  position:absolute;
  top:0;left:0;bottom:0;
  width:3px;
  background:linear-gradient(180deg,var(--red-900),var(--red-600));
  transform:scaleY(0);
  transform-origin:top center;
  transition:transform .35s ease;
}
.service-card:hover{
  transform:translateY(-5px);
  border-color:#f5d5d8;
}
.service-card:hover::before{transform:scaleY(1);}

.service-icon{
  flex-shrink:0;
  display:flex;
  align-items:center;
  justify-content:center;
  width:56px;
  height:56px;
  border-radius:16px;
  color:var(--red-600);
  background:linear-gradient(135deg,#fde7e8,#fbd2d5);
  transition:transform .35s ease;
}
.service-card:hover .service-icon{transform:scale(1.08) rotate(-5deg);}
.service-icon em{font-size:24px;}

.service-body h3{
  margin-bottom:8px;
  font-size:17px;
  font-weight:700;
  letter-spacing:.4px;
  color:var(--ink);
}
.service-body p{
  font-size:14.5px;
  line-height:1.85;
  color:var(--muted);
}

/* ============ 服务热线卡 ============ */
.service-hotline{
  position:relative;
  overflow:hidden;
  margin-top:26px;
  padding:38px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  background:linear-gradient(135deg,#a3000c 0%,#e50011 100%);
}
.service-hotline::before{
  content:"";
  position:absolute;
  top:-45%;
  right:-8%;
  width:340px;
  height:340px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(255,255,255,.18), transparent 70%);
  pointer-events:none;
}
.service-hotline::after{
  content:"";
  position:absolute;
  bottom:-55%;
  left:-6%;
  width:280px;
  height:280px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(255,255,255,.12), transparent 70%);
  pointer-events:none;
}

.hotline-left{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  gap:24px;
}
.hotline-icon{
  flex-shrink:0;
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  width:68px;
  height:68px;
  border-radius:50%;
  color:var(--red-600);
  background:#fff;
  font-size:28px;
}
.hotline-icon::before{
  content:"";
  position:absolute;
  inset:-8px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.4);
  animation:hotlinePulse 2.4s ease-out infinite;
}
@keyframes hotlinePulse{
  0%{transform:scale(.9);opacity:.9;}
  70%{transform:scale(1.18);opacity:0;}
  100%{transform:scale(1.18);opacity:0;}
}

.hotline-text span{
  display:block;
  margin-bottom:6px;
  font-size:13.5px;
  letter-spacing:2px;
  color:rgba(255,255,255,.85);
}
.hotline-text strong{
  display:block;
  font-size:34px;
  font-weight:800;
  letter-spacing:2px;
  line-height:1.15;
  color:#fff;
}

.hotline-right{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  gap:22px;
}
.hotline-time{
  font-size:13.5px;
  line-height:1.6;
  text-align:right;
  color:rgba(255,255,255,.85);
}
.hotline-time strong{
  display:block;
  margin-bottom:2px;
  font-size:14.5px;
  font-weight:700;
  color:#fff;
}
.hotline-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:14px 32px;
  font-size:15px;
  font-weight:700;
  letter-spacing:.5px;
  color:var(--red-600);
  background:#fff;
  border-radius:999px;
  transition:all .3s ease;
  white-space:nowrap;
}
.hotline-btn em{font-size:15px;}
.hotline-btn:hover{
  transform:translateY(-3px);
}

/* ============ 客户应用 ============ */
.apply-layout{
  display:grid;
  grid-template-columns:1fr 1.15fr;
  gap:50px;
  align-items:center;
}
.apply-body h3{
  margin-bottom:16px;
  font-size:22px;
  font-weight:700;
  letter-spacing:.6px;
  color:var(--ink);
}
.apply-body > p{
  margin-bottom:22px;
  font-size:15.5px;
  line-height:1.95;
  color:var(--muted);
}

.apply-tags{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.apply-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 20px;
  font-size:14.5px;
  font-weight:600;
  color:var(--ink);
  background:#fff;
  border:1px solid #e2e2e2;
  border-radius:999px;
  transition:all .25s ease;
}
.apply-tag em{
  font-size:15px;
  color:var(--red-600);
}
.apply-tag:hover{
  color:#fff;
  background:var(--red-600);
  border-color:var(--red-600);
  transform:translateY(-2px);
}
.apply-tag:hover em{color:#fff;}

/* ============ 底部 CTA ============ */
.cta{
  position:relative;
  overflow:hidden;
  padding:86px 0;
  text-align:center;
  color:#fff;
  background:
    radial-gradient(circle at 80% 10%, rgba(255,90,100,.4), transparent 50%),
    linear-gradient(135deg,#5c0006,#e50011);
}
.cta h2{
  font-size:clamp(22px,2.8vw,30px);
  letter-spacing:1.2px;
  margin-bottom:14px;
}
.cta p{
  max-width:840px;
  margin:0 auto 34px;
  font-size:17px;
  color:rgba(255,255,255,.92);
}
.cta .btn-primary{
  padding:16px 46px;
  font-size:18px;
  font-weight:700;
  color:var(--red-600);
}
.cta .btn-primary:hover{
  box-shadow:0 16px 34px rgba(0,0,0,.28);
}

/* ============ 响应式 ============ */
@media (max-width:1380px){
  .hero{padding:90px 0 74px;}
  .hero-grid{gap:48px;}
  .hero-panel-item{padding:20px 14px;}
  .hero-panel-item em{font-size:22px;}
  .hero-panel-item strong{font-size:14.5px;}

  .section{padding:76px 0;}
  .section-head{margin-bottom:48px;}

  .rd-grid{gap:20px;}
  .rd-card{padding:32px 22px 28px;}

  .cert-cell{padding:36px 24px;}

  .prod-layout{gap:44px;}
  .sim-intro{gap:44px;}
  .sim-data-grid{gap:18px;}
  .sim-data-card{padding:30px 22px 26px;}

  .perf-grid{gap:16px;}
  .perf-card{padding:30px 18px 26px;}

  .perf-coverage{padding:34px 36px;}

  .service-card{padding:30px 28px;gap:20px;}

  .service-hotline{padding:36px 42px;gap:30px;}
  .hotline-text strong{font-size:32px;}

  .apply-layout{gap:44px;}
}

/* ---------- 1280px：小笔记本 / 常见桌面 ---------- */
@media (max-width:1280px){
  .hero{padding:84px 0 68px;}
  .hero-grid{grid-template-columns:1.25fr 1fr;gap:40px;}
  .hero h1{letter-spacing:1.6px;margin-bottom:18px;}
  .hero-badge{margin-bottom:20px;padding:6px 18px;font-size:13px;}
  .hero-lead{font-size:15.5px;line-height:1.95;margin-bottom:28px;}
  .hero-panel{gap:12px;}
  .hero-panel-item{padding:18px 12px;}
  .hero-panel-item em{font-size:21px;margin-bottom:8px;}
  .hero-panel-item strong{font-size:14px;letter-spacing:.6px;}

  .btn{padding:13px 30px;font-size:15px;}

  .section{padding:70px 0;}
  .section-head{margin-bottom:44px;}
  .section-title{padding-bottom:14px;}
  .section-sub{font-size:15px;margin-top:16px;}

  .rd-grid{gap:18px;}
  .rd-card{padding:30px 20px 26px;}
  .rd-icon{width:50px;height:50px;margin-bottom:16px;}
  .rd-icon em{font-size:21px;}
  .rd-card h3{font-size:16.5px;}
  .rd-card p{font-size:14px;line-height:1.8;}

  .cert-cell{padding:34px 20px;}
  .cert-cell-icon{width:56px;height:56px;margin-bottom:16px;}
  .cert-cell-icon em{font-size:22px;}
  .cert-cell h3{font-size:16px;}
  .cert-cell p{font-size:13px;}

  .prod-layout{gap:38px;}
  .prod-body h3{font-size:21px;}
  .prod-body > p{font-size:15px;line-height:1.9;}
  .prod-points{gap:14px;margin-top:22px;}
  .prod-point{padding:14px 16px;}

  .sim-intro{gap:38px;margin-bottom:38px;}
  .sim-intro-text h3{font-size:21px;}
  .sim-intro-text p{font-size:15px;line-height:1.9;}
  .sim-data-grid{gap:16px;margin-bottom:24px;}
  .sim-data-card{padding:28px 20px 24px;}
  .sim-data-icon{width:48px;height:48px;margin-bottom:16px;}
  .sim-data-icon em{font-size:20px;}
  .sim-data-card h4{font-size:16px;}
  .sim-data-card p{font-size:13.5px;}
  .sim-notice{padding:20px 24px;font-size:14.5px;}

  .perf-grid{grid-template-columns:repeat(5,1fr);gap:14px;}
  .perf-card{padding:28px 15px 24px;}
  .perf-icon{width:52px;height:52px;margin-bottom:14px;}
  .perf-icon em{font-size:21px;}
  .perf-card h3{font-size:15px;}
  .perf-card p{font-size:12.5px;line-height:1.65;}

  .perf-coverage{padding:32px 32px;margin-top:28px;}
  .coverage-tag{padding:8px 17px;font-size:14px;}

  .service-grid{gap:20px;}
  .service-card{padding:28px 26px;gap:18px;}
  .service-icon{width:52px;height:52px;border-radius:14px;}
  .service-icon em{font-size:22px;}
  .service-body h3{font-size:16.5px;}
  .service-body p{font-size:14px;}

  .service-hotline{padding:34px 38px;gap:26px;margin-top:22px;}
  .hotline-icon{width:62px;height:62px;font-size:26px;}
  .hotline-left{gap:20px;}
  .hotline-text strong{font-size:30px;letter-spacing:1.5px;}
  .hotline-right{gap:18px;}
  .hotline-btn{padding:13px 28px;font-size:14.5px;}

  .apply-layout{gap:38px;}
  .apply-body h3{font-size:21px;}
  .apply-body > p{font-size:15px;line-height:1.9;margin-bottom:20px;}
  .apply-tag{padding:9px 18px;font-size:14px;}

  .cta{padding:78px 0;}
  .cta p{font-size:16.5px;}
}

@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-panel{max-width:520px;}
  .rd-grid{grid-template-columns:1fr 1fr;}
  .cert-band{grid-template-columns:1fr 1fr;}
  .cert-cell:nth-child(3)::before{display:none;}
  .prod-layout{grid-template-columns:1fr;gap:36px;}
  .sim-intro{grid-template-columns:1fr;gap:36px;}
  .sim-data-grid{grid-template-columns:1fr 1fr;}
  .perf-grid{grid-template-columns:repeat(3,1fr);}
  .service-grid{grid-template-columns:1fr;}
  .apply-layout{grid-template-columns:1fr;gap:36px;}
}

@media (max-width:900px){
  .section{padding:62px 0;}
  .hero{
    padding:76px 0 82px;
    background:url(/template/pc/skin/css/../images/about_advantages_phone.jpg) no-repeat;
    background-size:100% 100%;
  }
  .hero h1{letter-spacing:1.4px;margin-bottom:18px;}
  .hero-lead{font-size:15px;line-height:1.9;margin-bottom:28px;}
  .hero-panel{max-width:100%;}
  .hero-panel-item{padding:18px 14px;}
  .section-head{margin-bottom:40px;}
  .section-sub{font-size:15px;}
  .cta{padding:66px 0;}
  .cta p{font-size:16px;padding:0 6px;}
  .service-hotline{
    padding:32px 32px;
    flex-direction:column;
    align-items:flex-start;
    gap:26px;
  }
  .hotline-right{
    width:100%;
    justify-content:space-between;
  }
  .perf-coverage{padding:30px 28px;}
  .prod-points{gap:14px;}
  .sim-notice{padding:20px 24px;}
}

@media (max-width:640px){
  .rd-grid{grid-template-columns:1fr;}
  .cert-band{grid-template-columns:1fr;}
  .cert-cell + .cert-cell::before{
    left:24px;right:24px;top:0;bottom:auto;
    width:auto;height:1px;
  }
  .cert-cell:nth-child(3)::before{display:block;}
  .prod-points{grid-template-columns:1fr;}
  .sim-data-grid{grid-template-columns:1fr;}
  .perf-grid{grid-template-columns:1fr 1fr;}
  .coverage-bottom{grid-template-columns:1fr;gap:22px;}
}

@media (max-width:560px){
  body{font-size:15px;}
  .container{padding:0 18px;}

  /* 首屏 */
  .hero{
    padding:70px 0 55%;
    background-size:cover;
    background-position:center;
  }
  .hero-badge{
    font-size:12px;
    padding:5px 14px;
    margin-bottom:16px;
  }
  .hero h1{
    font-size:22px;
    letter-spacing:1.2px;
    margin-bottom:14px;
  }
  .hero-lead{
    font-size:14px;
    line-height:1.7;
    margin-bottom:22px;
  }
  .hero-actions{gap:10px;}
  .btn{padding:12px 24px;font-size:14.5px;}
  .hero-panel{gap:10px;}
  .hero-panel-item{padding:16px 10px;}
  .hero-panel-item strong{font-size:13.5px;}
  .hero-panel-item em{font-size:19px;margin-bottom:6px;}

  /* 区块通用 */
  .section{padding:48px 0;}
  .section-head{margin-bottom:32px;}
  .section-title{font-size:20px;padding-bottom:12px;}
  .section-title::after{width:48px;height:3px;}
  .section-sub{font-size:14px;margin-top:12px;}

  /* 研发卡片 */
  .rd-card{padding:26px 18px 24px;}
  .rd-icon{width:46px;height:46px;margin-bottom:14px;}
  .rd-icon em{font-size:19px;}
  .rd-card h3{font-size:16px;}
  .rd-card p{font-size:13.5px;line-height:1.75;}

  /* 认证 */
  .cert-cell{padding:28px 18px;}
  .cert-cell-icon{width:48px;height:48px;margin-bottom:14px;}
  .cert-cell-icon em{font-size:20px;}
  .cert-cell h3{font-size:15.5px;}
  .cert-cell p{font-size:13px;}

  /* 生产 */
  .prod-body h3{font-size:19px;margin-bottom:12px;}
  .prod-body > p{font-size:14.5px;line-height:1.85;}
  .prod-point{padding:13px 14px;}
  .prod-point em{font-size:16px;}
  .prod-point span{font-size:13.5px;}

  /* 模拟测试 */
  .sim-intro{gap:28px;margin-bottom:28px;}
  .sim-intro-text h3{font-size:19px;padding-left:14px;}
  .sim-intro-text h3::before{width:3px;top:4px;bottom:4px;}
  .sim-intro-text p{font-size:14.5px;line-height:1.85;}
  .sim-data-grid{gap:14px;margin-bottom:22px;}
  .sim-data-card{padding:24px 18px 22px;}
  .sim-data-icon{width:44px;height:44px;margin-bottom:14px;border-radius:12px;}
  .sim-data-icon em{font-size:18px;}
  .sim-data-card h4{font-size:15px;}
  .sim-data-card p{font-size:13px;line-height:1.75;}
  .sim-notice{padding:16px 18px;font-size:14px;gap:12px;border-left-width:4px;}
  .sim-notice em{font-size:18px;margin-top:2px;}

  /* 整机表现 */
  .perf-grid{grid-template-columns:1fr;}
  .perf-card{padding:24px 16px 20px;}
  .perf-icon{width:48px;height:48px;margin-bottom:12px;}
  .perf-icon em{font-size:20px;}
  .perf-card h3{font-size:15px;}
  .perf-card p{font-size:13px;line-height:1.7;}

  /* 产品覆盖 */
  .perf-coverage{padding:24px 18px;margin-top:24px;}
  .coverage-title{font-size:15px;margin-bottom:14px;}
  .coverage-title em{width:26px;height:26px;font-size:12px;border-radius:7px;}
  .coverage-tag{padding:6px 14px;font-size:13px;}
  .coverage-divider{margin:20px 0;}
  .coverage-bottom{gap:18px;}
  .coverage-item-icon{width:40px;height:40px;border-radius:10px;}
  .coverage-item-icon em{font-size:16px;}
  .coverage-item-body strong{font-size:14px;}
  .coverage-item-body span{font-size:13px;line-height:1.7;}

  /* 售后 */
  .service-card{padding:22px 18px;gap:14px;flex-direction:column;align-items:flex-start;}
  .service-icon{width:44px;height:44px;border-radius:12px;}
  .service-icon em{font-size:19px;}
  .service-body h3{font-size:15.5px;}
  .service-body p{font-size:13.5px;line-height:1.75;}

  /* 服务热线 */
  .service-hotline{padding:24px 18px;gap:18px;margin-top:18px;}
  .hotline-left{gap:14px;flex-wrap:wrap;}
  .hotline-icon{width:52px;height:52px;font-size:20px;}
  .hotline-text span{font-size:12px;letter-spacing:1.2px;}
  .hotline-text strong{font-size:24px;letter-spacing:1px;}
  .hotline-right{flex-direction:column;align-items:stretch;gap:12px;}
  .hotline-time{text-align:left;font-size:12.5px;}
  .hotline-time strong{font-size:13.5px;}
  .hotline-btn{justify-content:center;padding:12px 20px;font-size:14px;}

  /* 客户应用 */
  .apply-body h3{font-size:19px;}
  .apply-body > p{font-size:14.5px;line-height:1.85;margin-bottom:18px;}
  .apply-tag{padding:7px 14px;font-size:13.5px;}
  .apply-tag em{font-size:14px;}

  /* 底部CTA */
  .cta{padding:54px 0;}
  .cta h2{font-size:20px;letter-spacing:1px;margin-bottom:12px;}
  .cta p{font-size:15px;margin-bottom:26px;padding:0 8px;}
  .cta .btn-primary{padding:13px 30px;font-size:15.5px;}
}

/* ---------- 480px：超小屏补充 ---------- */
@media (max-width:480px){
  .hero h1{font-size:20px;}
  .hero-lead{font-size:13px;}
  .section-title{font-size:18px;}
  .hotline-text strong{font-size:22px;}
  .hotline-icon{width:46px;height:46px;font-size:18px;}
  .btn{padding:10px 20px;font-size:14px;}
}