:root{
  --red-900:#a3000c;
  --red-700:#c5000e;
  --red-600:#e50011;
  --red-050:#fef3f4;
  --ink:#333333;
  --muted:#666666;
  --light:#999999;
  --line:#ececec;
  --red-light: #ff4d5a;
  --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;}

.manu-body .eyebrow{
  display:block;font-size:13px;font-weight:700;letter-spacing:2.5px;
  color:var(--red);margin-bottom:12px;
}
.manu-body .eyebrow i{margin-right:6px;}
.manu-body h3{
  font-size:clamp(22px,2.6vw,28px);color:var(--ink);
  line-height:1.4;margin-bottom:16px;font-weight:700;
}
.manu-body h3::after,.detect-body h3::after{
  content:"";display:block;width:56px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,var(--red),var(--red-light));
  margin-top:16px;
}

/* ============ 首屏 Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  color:#333;
  padding:120px 0 120px;
  background:url(../images/about_production.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;
}

/* 右侧流程节点面板 */
.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:rgba(229,0,17,.8);color:#e50011;}
.btn-ghost:hover{background:#e50011;color:#fff;transform:translateY(-3px);}

.phone-gd-right span,.phone-gd-right:before,.phone-gd-right:after{
    background: #666;
}

/* ============ 区块通用 ============ */
.section{padding:82px 0;}
.section-white{background:#fff;}
.section-tint{background:var(--bg);}
.section-tint#sect_pz{background:url(../images/about_pzbg.jpg);}

.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);
}
.section-tint#sect_pz .section-title,
.section-tint#sect_pz .section-sub{color:#fff;}


/* ============ 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%;
}

/* ============ 生产制造实力（左文右图） ============ */
.manu-layout{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:50px;
  align-items:center;
}
.manu-body h3{
  margin-bottom:16px;
  font-size:22px;
  font-weight:700;
  letter-spacing:.6px;
  color:var(--ink);
}
.manu-body > p{
  margin-bottom:16px;
  font-size:15.5px;
  line-height:1.95;
  color:var(--muted);
}
.manu-body > p:last-child{margin-bottom:0;}

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

/* ============ 全流程品质品控（步骤卡） ============ */
.steps-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:24px;
}
.step-card{
  position:relative;
  padding:36px 28px 32px;
  background:#fff;
  border:1px solid var(--line);
  transition:all .35s ease;
  overflow:hidden;
}
.step-card:hover{
  transform:translateY(-6px);
  border-color:#f5d5d8;
}
.step-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;
}
.step-card:hover::before{transform:scaleX(1);}

.step-num{
  position:absolute;
  right:22px;
  top:14px;
  font-size:52px;
  font-weight:800;
  line-height:1;
  color:rgba(229,0,17,.07);
  letter-spacing:-2px;
  pointer-events:none;
}

.step-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;
}
.step-card:hover .step-icon{transform:scale(1.06) rotate(-4deg);}
.step-icon em{font-size:22px;}

.step-card h3{
  margin-bottom:10px;
  font-size:17.5px;
  font-weight:700;
  letter-spacing:.5px;
  color:var(--ink);
}
.step-card p{
  font-size:14.5px;
  line-height:1.85;
  color:var(--muted);
}

/* ============ 检测硬件配套（左图右文） ============ */
.detect-layout{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:50px;
  align-items:center;
}
.detect-body h3{
  margin-bottom:16px;
  font-size:22px;
  font-weight:700;
  letter-spacing:.6px;
  color:var(--ink);
}
.detect-body > p{
  margin-bottom:22px;
  font-size:15.5px;
  line-height:1.95;
  color:var(--muted);
}

.detect-tags{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.detect-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 20px;
  font-size:14.5px;
  font-weight:600;
  color:var(--ink);
  background:#f5f5f5;
  border:1px solid #e2e2e2;
  border-radius:999px;
  transition:all .25s ease;
}
.detect-tag em{
  font-size:15px;
  color:var(--red-600);
}
.detect-tag:hover{
  color:#fff;
  background:var(--red-600);
  border-color:var(--red-600);
  transform:translateY(-2px);
}
.detect-tag:hover em{color:#fff;}

/* ============ 品控理念（重新优化布局） ============ */
.philo-statement{
  position:relative;
  max-width:960px;
  margin:0 auto;
  padding:48px 64px;
  text-align:center;
  backdrop-filter: blur(14px);
  background: rgba(23, 24, 27, .2);
  overflow:hidden;
}
.philo-statement::before,
.philo-statement::after{
  position:absolute;
  font-family:Georgia,"Times New Roman",serif;
  font-size:140px;
  line-height:1;
  color:rgba(255,255,255,.13);
  pointer-events:none;
}
.philo-statement::before{content:"\201C";left:20px;top:-18px;}
.philo-statement::after{content:"\201D";right:20px;bottom:-72px;}

.philo-quote-icon{
  position:relative;
  z-index:1;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:56px;
  height:56px;
  margin-bottom:20px;
  border-radius:50%;
  color:#fff;
  background:linear-gradient(135deg,var(--red-900),var(--red-600));
  box-shadow:0 12px 24px rgba(229,0,17,.24);
}
.philo-quote-icon em{font-size:22px;}

.philo-statement-text{
  position:relative;
  z-index:1;
  margin-bottom:18px;
  font-size:19px;
  font-weight:700;
  line-height:1.9;
  letter-spacing:.5px;
  color:#fff;
  opacity:.6;
}
.philo-statement-author{
  position:relative;
  z-index:1;
  font-size:14px;
  letter-spacing:1.5px;
  color:#fff;
}
.philo-statement-author::before{
  content:"—— ";
}

.philo-principles{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  max-width:1080px;
  margin:44px auto 0;
}
.principle-card{
  position:relative;
  padding:34px 28px 30px;
  text-align:center;
  background:#fff;
  border:1px solid var(--line);
  transition:all .35s ease;
  overflow:hidden;
}
.principle-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;
}
.principle-card:hover{
  transform:translateY(-6px);
  border-color:#f5d5d8;
}
.principle-card:hover::before{transform:scaleX(1);}

.principle-icon{
  display:flex;
  align-items:center;
  justify-content:center;
  width:56px;
  height:56px;
  margin:0 auto 18px;
  border-radius:16px;
  color:var(--red-600);
  background:linear-gradient(135deg,#fde7e8,#fbd2d5);
  transition:transform .3s ease;
}
.principle-card:hover .principle-icon{transform:scale(1.08) rotate(-5deg);}
.principle-icon em{font-size:24px;}

.principle-card h3{
  margin-bottom:10px;
  font-size:17.5px;
  font-weight:700;
  letter-spacing:.5px;
  color:var(--ink);
}
.principle-card p{
  font-size:14.5px;
  line-height:1.85;
  color:var(--muted);
}

.philo-notice{
  max-width:1024px;
  margin:0 auto;
  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);
  margin-top:20px;
}
.philo-notice em{
  flex-shrink:0;
  margin-top:3px;
  font-size:20px;
  color:var(--red-600);
}
.philo-notice strong{color:var(--red-700);}

/* ============ 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);
}

@media (max-width:1380px){
  .hero{padding:120px 0 74px;}
  .hero-grid{gap:50px;}
  .hero-panel-item{padding:20px 14px;}

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

  .manu-layout,
  .detect-layout{gap:42px;}

  .steps-grid{gap:22px;}
  .step-card{padding:34px 24px 30px;}

  .philo-statement{padding:46px 56px;}
  .philo-principles{gap:22px;max-width:1040px;}

  .cta{padding:80px 0;}
}

/* ============ ≤1280px（常规笔记本） ============ */
@media (max-width:1280px){
  .hero{padding:112px 0 66px;}
  .hero-grid{gap:40px;}
  .hero-badge{margin-bottom:20px;padding:6px 18px;font-size:13px;}
  .hero h1{letter-spacing:1.4px;margin-bottom:18px;}
  .hero-lead{font-size:15px;line-height:1.95;margin-bottom:28px;}
  .hero-panel{gap:12px;}
  .hero-panel-item{padding:18px 12px;}
  .hero-panel-item em{font-size:22px;margin-bottom:8px;}
  .hero-panel-item strong{font-size:14.5px;}

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

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

  .manu-layout,
  .detect-layout{gap:36px;}
  .manu-body h3,
  .detect-body h3{font-size:20.5px;}
  .manu-body > p,
  .detect-body > p{font-size:15px;line-height:1.9;}
  .manu-points{gap:14px;}
  .manu-point{padding:14px 16px;}

  .steps-grid{
    grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
    gap:20px;
  }
  .step-card{padding:32px 22px 28px;}
  .step-num{font-size:48px;right:18px;}

  .philo-statement{padding:42px 48px;}
  .philo-statement-text{font-size:18px;}
  .philo-principles{gap:20px;margin-top:38px;}
  .principle-card{padding:30px 24px 28px;}

  .cta{padding:74px 0;}
  .cta p{font-size:16px;}
  .cta .btn-primary{padding:15px 42px;font-size:17px;}
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-panel{max-width:520px;}
  .manu-layout{grid-template-columns:1fr;gap:36px;}
  .detect-layout{grid-template-columns:1fr;gap:36px;}
  .philo-principles{grid-template-columns:1fr 1fr;}
}

@media (max-width:900px){
  /* 首屏 */
  .hero{
    padding:76px 0 66px;
    background:url(../images/about_production_phone.jpg) no-repeat center top;
    background-size:cover;
  }
  .hero::after{background-size:44px 44px;}
  .hero-grid{gap:36px;}
  .hero-badge{margin-bottom:16px;padding:6px 16px;font-size:12.5px;letter-spacing:1px;}
  .hero h1{margin-bottom:16px;letter-spacing:1px;}
  .hero-lead{margin-bottom:26px;font-size:14.5px;line-height:1.9;}
  .hero-actions{gap:12px;}
  .hero-panel{max-width:100%;gap:12px;}

  /* 区块通用 */
  .section{padding:60px 0;}
  .section-head{margin-bottom:38px;}
  .section-title{padding-bottom:14px;}
  .section-sub{margin-top:14px;font-size:14.5px;}

  /* 生产制造 */
  .manu-layout,
  .detect-layout{gap:30px;}
  .manu-body h3,
  .detect-body h3{font-size:20px;}
  .manu-points{gap:14px;margin-top:22px;}

  /* 步骤卡：两列 */
  .steps-grid{grid-template-columns:1fr;gap:18px;}
  .step-card{padding:28px 20px 24px;}
  .step-num{font-size:44px;right:16px;top:12px;}
  .step-icon{width:48px;height:48px;margin-bottom:16px;}
  .step-icon em{font-size:20px;}
  .step-card h3{font-size:16.5px;}
  .step-card p{font-size:14px;line-height:1.8;}

  /* 品控理念 */
  .philo-statement{padding:38px 42px;}
  .philo-statement-text{font-size:17px;line-height:1.85;}
  .philo-statement::before,
  .philo-statement::after{font-size:118px;}
  .philo-principles{grid-template-columns:1fr 1fr;gap:18px;margin-top:32px;}
  .principle-card{padding:28px 20px 24px;}

  .philo-notice{padding:20px 24px;font-size:14.5px;gap:14px;}

  /* CTA */
  .cta{padding:64px 0;}
  .cta h2{margin-bottom:12px;}
  .cta p{margin-bottom:28px;font-size:15.5px;}
}

@media (max-width:640px){
  .manu-points{grid-template-columns:1fr;}
  .philo-principles{grid-template-columns:1fr;}
}

@media (max-width:560px){
  body{font-size:15px;}
  .container{padding:0 18px;}
  .hero{padding:80px 0 65%;}
  .hero h1{font-size:clamp(20px,3.6vw,42px);}
  .hero-lead{font-size:13px;line-height:1.55}
  .hero-panel{gap:10px;}
  .hero-panel-item{padding:18px 12px;}
  .hero-panel-item strong{font-size:14px;}
  .hero-panel-item em{font-size:20px;}
  .hero-actions{gap:10px;}
  .btn{padding:12px 24px;font-size:14.5px;}
  .cta .btn-primary{padding:14px 34px;font-size:16px;}
  .step-card{padding:28px 22px 26px;}
  .step-num{font-size:42px;}
  .manu-body h3,
  .detect-body h3{font-size:19px;}
  .manu-point{padding:14px 16px;}
  .manu-point span{font-size:14px;}
  .detect-tag{padding:8px 16px;font-size:14px;}
  .philo-statement{padding:32px 26px;margin-bottom:32px;}
  .philo-statement-text{font-size:16px;line-height:1.8;}
  .philo-statement::before,
  .philo-statement::after{font-size:100px;}
  .philo-quote-icon{width:48px;height:48px;}
  .philo-quote-icon em{font-size:19px;}
  .principle-card{padding:28px 22px 26px;}
  .principle-icon{width:50px;height:50px;}
  .principle-icon em{font-size:21px;}
  .philo-notice{padding:18px 22px;font-size:14.5px;gap:12px;}
  .philo-notice em{font-size:18px;}
}