:root{
  --red-900:#a3000c;
  --red-700:#c5000e;
  --red-600:#e50011;
  --red-050:#fef3f4;
  --ink:#333333;
  --muted:#666666;
  --light:#999999;
  --line:#ececec;
  --bg:#fafafa;
  --red-light: #ff4d5a;
  --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;}
/* 左标题 + 右内容 双栏 */
.split{
  display:grid;grid-template-columns:330px 1fr;
  gap:52px;align-items:start;
}
.split-body .eyebrow{
  display:block;font-size:13px;font-weight:700;letter-spacing:2.5px;
  color:var(--red);margin-bottom:12px;
}
.split-body .eyebrow i{margin-right:6px;}
.split-body h3{
  font-size:clamp(22px,2.6vw,28px);color:var(--ink);
  line-height:1.4;margin-bottom:16px;font-weight:700;
}
.split-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;
}

.splip{
    overflow-x:auto;
    max-height:382px;
    scrollbar-width: thin; 
    scrollbar-color: #cccccc #f5f5f5;
}
.splip::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.splip::-webkit-scrollbar-track {
    background-color: #f5f5f5;
    border-radius: 10px;
}

.splip::-webkit-scrollbar-thumb {
    background-color: #cccccc;
    border-radius: 10px; 
    border: 2px solid #f5f5f5;
}

.splip::-webkit-scrollbar-thumb:hover {
    background-color: #b3b3b3;
}
.splip::-webkit-scrollbar-button {
    display: none;
}

.video-btn{display:block;position:absolute;left:0;top:0;width:100%;height:100%;z-index:99;cursor:pointer;}
.video-btn img{display:block;width:100%;height:auto;}
.video{display:block;width:100%;height:auto;object-fit:contain;}
.hero{
  position:relative;
  overflow:hidden;
  text-align:left;
  color:#333;
  padding:150px 0 120px;
  background:url(../images/about_index.jpg) no-repeat top;
  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-inner{
    max-width:1000px;
}

.hero-badge{
  display:inline-block;
  margin-bottom:26px;
  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,4vw,42px);
  font-weight:700;
  letter-spacing:2px;
  margin-bottom:22px;
  animation:fadeUp .8s ease both;
}
.hero-lead{
  margin:0 0 38px;
  font-size:clamp(15px,1.6vw,17px);
  line-height:1.55;
  color:rgba(0,0,0,.93);
  animation:fadeUp .8s .12s ease both;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  justify-content:flex-start;
  gap:16px;
  animation:fadeUp .8s .24s ease both;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-block;
  padding:15px 40px;
  font-size:16px;
  font-weight:600;
  letter-spacing:1px;
  border-radius:999px;
  border:2px solid transparent;
  transition:all .3s ease;
}
.btn-primary{background:var(--red-600);color:#fff;}
.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-white{background:#fff;}
.section-tint{background:var(--bg);}
.section-tint#zongz{background:url(../images/about_z.jpg);}
.section-tint#hezuo{background:url(../images/about_h.jpg);}

.section-head{
  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#zongz .section-title,
.section-tint#zongz .section-sub,
.section-tint#hezuo .section-title,
.section-tint#hezuo .section-sub{color:#fff;}

/* ============ 两栏布局 ============ */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.split-body h3{
  font-size:21px;
  color:var(--ink);
  margin-bottom:16px;
  letter-spacing:.6px;
}
.split-body p{
  color:var(--muted);
  margin-bottom:14px;
}
.split-body p:last-child{margin-bottom:0;}

/* ============ 图片占位块 ============ */
.media{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:12px;
  text-align:center;
  font-size:14px;
  overflow:hidden;
  transition:all .3s ease;
}

.media img{
    display:block;
    width:100%;
    height:100%;
    object-fit: cover;
}

/* ============ 数据条 ============ */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-top:54px;
}
.stat{
  padding:26px 16px;
  text-align:center;
  background:var(--red-050);
  border:1px solid #f8d8da;
  transition:all .3s ease;
}
.stat-icon{
  display:block;
  margin-bottom:12px;
  font-size:30px;
  line-height:1;
  color:var(--red-600);
  transition:transform .3s ease;
}
.stat:hover .stat-icon{transform:scale(1.08);}
.stat:hover{
  transform:translateY(-4px);
  background:#fff;
}
.stat strong{
  display:block;
  margin-bottom:6px;
  font-size:21px;
  font-weight:700;
  letter-spacing:.5px;
  color:var(--red-600);
}
.stat span{font-size:14px;color:var(--muted);}

/* ============ 产品标签 ============ */
.tags{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.tag{
  padding:9px 20px;
  font-size:15px;
  color:var(--ink);
  background:#f5f5f5;
  border:1px solid #e2e2e2;
  border-radius:999px;
  transition:all .25s ease;
}
.tag:hover{
  color:#fff;
  background:var(--red-600);
  border-color:var(--red-600);
  transform:translateY(-2px);
}

/* ============ 实力卡片 ============ */
.grid-4{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:24px;
}
.card{
  padding:25px;
  background:#fff;
  border:1px solid #f0f0f0;
  transition:all .3s ease;
}
.card:hover{
  transform:translateY(-6px);
  border-color:#f5d5d8;
}
.card-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);
}
.card-icon i{font-size:22px;}
.card h3{
  margin-bottom:12px;
  font-size:18.5px;
  color:var(--ink);
  letter-spacing:.5px;
}
.card p{
  font-size:15px;
  color:var(--muted);
}

/* ============ 经营理念 ============ */
.philosophy-grid{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:18px;
  margin-bottom:44px;
}
.philo-card{
  position:relative;
  padding:32px 18px 26px;
  text-align:center;
  overflow:hidden;
  transition:transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  backdrop-filter: blur(10px);
background: rgba(255, 255, 255, .1);
}
.philo-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;
}
.philo-card:hover{
  transform:translateY(-8px);
  border-color:#f5d5d8;
}
.philo-card:hover::before{transform:scaleX(1);}

.philo-icon{
  display:flex;
  align-items:center;
  justify-content:center;
  width:58px;
  height:58px;
  margin:0 auto 18px;
  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;
}
.philo-card:hover .philo-icon{transform:scale(1.08) rotate(-5deg);}
.philo-icon i{font-size:23px;}

.philo-card h3{
  margin-bottom:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:1px;
  color:#fff;
}
.philo-card p{
  font-size:13.5px;
  line-height:1.75;
  color:#fff;
   opacity:.6;
}

.philosophy-statement{
  position:relative;
  margin:0 auto;
  padding:40px 60px;
  text-align:center;
  overflow:hidden;
}
.philosophy-statement::before,
.philosophy-statement::after{
  position:absolute;
  font-family:Georgia,"Times New Roman",serif;
  font-size:130px;
  line-height:1;
  color:rgba(255,255,255,.12);
  pointer-events:none;
}
.philosophy-statement::before{content:"\201C";left:18px;top:-14px;}
.philosophy-statement::after{content:"\201D";right:18px;bottom:-66px;}
.philosophy-statement p{
  position:relative;
  z-index:1;
  font-size:16px;
  line-height:2.05;
  letter-spacing:.4px;
  color:#fff;
  opacity:.6;
}

/* ============ 资质列表 ============ */
.check-list li{
  position:relative;
  padding-left:34px;
  margin-bottom:16px;
  font-size:15.5px;
  color:var(--ink);
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:19px;
  height:19px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--red-600),var(--red-900));
}
.check-list li::after{
  content:"";
  position:absolute;
  left:6px;
  top:5px;
  width:7px;
  height:4px;
  border-left:2px solid #fff;
  border-bottom:2px solid #fff;
  transform:rotate(-45deg);
}

/* ============ 温馨提示 ============ */
.notice{
  margin-top:26px;
  padding:18px 22px;
  font-size:15px;
  color:var(--muted);
  background:#fff5f5;
  border-left:5px solid var(--red-600);
}
.notice strong{color:var(--red-700);}

/* ============ 合作邀约 ============ */
.coop-panel{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  gap:48px;
  align-items:center;
  padding:52px 56px;
  backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, .1);
}

.coop-info h3{
  position:relative;
  padding-left:18px;
  margin-bottom:16px;
  font-size:22px;
  font-weight:700;
  letter-spacing:.6px;
  color:#fff;
}
.coop-info 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));
}

.coop-info p{
  margin-bottom:30px;
  font-size:15.5px;
  line-height:1.95;
  color:#fff;
  opacity:.6;
}

.coop-btn{
  display:inline-block;
  padding:14px 38px;
  font-size:15.5px;
  font-weight:600;
  letter-spacing:1px;
  color:#fff;
  background:linear-gradient(135deg,var(--red-600),var(--red-900));
  border-radius:999px;
  transition:all .3s ease;
}
.coop-btn:hover{
  transform:translateY(-3px);
}

.coop-partners{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
}

.partner-item{
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 20px;
  backdrop-filter: blur(14px);
    background: rgba(23,24,27,.1);
  transition:all .3s ease;
}
.partner-item:hover{
  transform:translateY(-3px);
}

.partner-icon{
  flex-shrink:0;
  display:flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:12px;
  color:var(--red-600);
  background:linear-gradient(135deg,#fde7e8,#fbd2d5);
}
.partner-icon i{font-size:19px;}

.partner-label{
  font-size:14.5px;
  font-weight:600;
  line-height:1.4;
  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:1580px){
  .splip{max-height:292px;}
}

@media (max-width:1360px){
  .splip{max-height:242px;}
}

@media (max-width:1280px){
  .splip{max-height:182px;}
}


@media (max-width:1024px){
    .philosophy-grid{grid-template-columns:repeat(3,1fr);}
  .coop-panel{padding:44px 40px;gap:36px;}
  .split{grid-template-columns:1fr;gap:34px;}
  .section{padding:62px 0;}
  .hero{padding:74px 0 82px;background: url(../images/about_index_phone.jpg) no-repeat;background-size:100%;}
  .hero-inner{max-width:100%;padding:20px;}
  .section-head{margin-bottom:40px;}
  .stats{grid-template-columns:repeat(2,1fr);gap:16px;margin-top:40px;}
  .cta{padding:66px 0;}
  .philosophy-statement{padding:34px 44px;}
  .coop-panel{grid-template-columns:1fr;gap:34px;padding:40px 32px;}
  .hero-lead{font-size:clamp(14px, 1.6vw, 17px);}
  .splip{max-height:initial;}
}

@media (max-width:640px){
  .philosophy-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
}

@media (max-width:560px){
  body{font-size:15px;}
  .container{padding:0 18px;}
  .hero{padding:80px 0 72px;}
  .hero-actions{gap:12px;}
  .btn{padding:13px 26px;font-size:15px;}
  .cta .btn-primary{padding:14px 34px;font-size:16px;}
  .tag{padding:8px 16px;font-size:14px;}
  .card{padding:26px 22px;}
  .stat strong{font-size:19px;}
  .philosophy-grid{grid-template-columns:1fr;}
  .philo-card{padding:26px 20px 22px;}
  .philosophy-statement{padding:28px 24px;}
  .philosophy-statement p{font-size:15px;}
  .philosophy-statement::before,
  .philosophy-statement::after{font-size:96px;}
  .coop-panel{padding:32px 24px;gap:28px;}
  .coop-info h3{font-size:19px;}
  .coop-info p{font-size:15px;margin-bottom:24px;}
  .coop-btn{width:100%;text-align:center;padding:13px 0;}
  .coop-partners{grid-template-columns:1fr;gap:12px;}
  .partner-item{padding:16px 18px;}
  .partner-icon{width:40px;height:40px;}
  .partner-icon i{font-size:17px;}
  .partner-label{font-size:14px;}
}