/* ============================================================
   珩真电子 · 企业官网
   风格：简约 / 科技 / 直观
   品牌色体系源自《珩真LOGO设计规范》：
   珩红 #E24B4A · 珩深 #A32D2D · 珩浅 #F09595 · 珩粉 #F7C1C1 · 珩雾 #FCEBEB
   ============================================================ */

:root{
  --red-primary:#E24B4A;
  --red-deep:#A32D2D;
  --red-light:#F09595;
  --red-pale:#F7C1C1;
  --red-bg:#FCEBEB;
  --ink:#1F1F1F;
  --ink-2:#4D4D4D;
  --ink-3:#8A8A8A;
  --line:#E8E2E2;
  --paper:#FFFFFF;
  --paper-2:#FAF7F7;
  --dark:#201415;
  --dark-2:#2B1B1C;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(163,45,45,.05);
  --shadow-md:0 10px 34px rgba(163,45,45,.10);
  --shadow-lg:0 24px 64px rgba(31,31,31,.14);
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --mono:"JetBrains Mono","SF Mono",Consolas,Menlo,monospace;
  --nav-h:72px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--paper);
  line-height:1.75;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
button{font-family:inherit;cursor:pointer;}
::selection{background:var(--red-primary);color:#fff;}

.container{max-width:1200px;margin:0 auto;padding:0 28px;}

/* ---------------- 通用标题 ---------------- */
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--paper-2);}
.section-dark{
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(226,75,74,.16), transparent 60%),
    radial-gradient(700px 380px at -10% 110%, rgba(163,45,45,.22), transparent 60%),
    var(--dark);
  color:#F5EFEF;
}
.section-head{max-width:720px;margin:0 auto 52px;text-align:center;}
.section-head .sec-num{
  display:inline-block;
  font-family:var(--mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:2px;
  color:var(--red-primary);
  background:var(--red-bg);
  border:1px solid var(--red-pale);
  border-radius:999px;
  padding:3px 12px;
  margin-bottom:14px;
}
.section-head h2{font-size:32px;font-weight:700;letter-spacing:2px;line-height:1.35;}
.section-head p{color:var(--ink-2);margin-top:12px;font-size:15px;}
.section-head-light .sec-num{color:#FF9B9A;background:rgba(226,75,74,.12);border-color:rgba(226,75,74,.35);}
.section-head-light h2{color:#fff;}
.section-head-light p{color:rgba(245,239,239,.72);}
.section-head-left{margin:0 0 28px;text-align:left;}

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all .25s var(--ease);white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--red-primary),var(--red-deep));color:#fff;box-shadow:0 8px 22px rgba(163,45,45,.28);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(163,45,45,.36);}
.btn-ghost{color:#fff;border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.04);backdrop-filter:blur(6px);}
.btn-ghost:hover{border-color:var(--red-light);color:var(--red-light);background:rgba(226,75,74,.10);}
.btn-outline{color:var(--red-deep);border-color:var(--red-pale);background:#fff;}
.btn-outline:hover{background:var(--red-bg);border-color:var(--red-primary);}
.btn-block{width:100%;}

/* ---------------- 顶部导航 ---------------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--nav-h);
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s,box-shadow .3s;
}
.site-header.scrolled{background:rgba(255,255,255,.94);border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(31,31,31,.06);}
.header-inner{height:100%;display:flex;align-items:center;gap:28px;}
.brand{display:flex;align-items:center;gap:11px;flex:none;}
.brand-mark{width:38px;height:38px;flex:none;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-cn{font-size:19px;font-weight:700;letter-spacing:3px;}
.brand-en{font-size:8.5px;letter-spacing:1.8px;color:var(--red-deep);font-weight:600;margin-top:2px;}
.main-nav{display:flex;gap:4px;margin-left:auto;}
.main-nav a{
  position:relative;padding:8px 13px;font-size:14.5px;color:var(--ink-2);
  border-radius:8px;transition:color .2s;
}
.main-nav a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  background:var(--red-primary);border-radius:2px;transform:scaleX(0);transform-origin:center;transition:transform .25s var(--ease);
}
.main-nav a:hover{color:var(--red-deep);}
.main-nav a.active{color:var(--red-deep);}
.main-nav a.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:16px;}
.header-tel{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--red-deep);font-size:14.5px;}
.header-tel:hover{color:var(--red-primary);}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;}
.nav-toggle span{width:20px;height:2px;background:var(--ink);border-radius:2px;transition:all .3s var(--ease);}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------------- Hero ---------------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--dark);
  padding:calc(var(--nav-h) + 64px) 0 96px;
}
.hero-bg{position:absolute;inset:0;pointer-events:none;}
.hero-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(240,149,149,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(240,149,149,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 90% 80% at 60% 20%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 90% 80% at 60% 20%,#000 30%,transparent 75%);
}
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55;}
.hero-glow-1{width:560px;height:560px;background:rgba(226,75,74,.34);top:-160px;right:-80px;}
.hero-glow-2{width:480px;height:480px;background:rgba(163,45,45,.40);bottom:-200px;left:-120px;}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12.5px;letter-spacing:2.5px;color:var(--red-light);
  border:1px solid rgba(240,149,149,.35);border-radius:999px;
  padding:7px 16px;background:rgba(226,75,74,.08);
}
.eyebrow-dot{width:7px;height:7px;border-radius:50%;background:var(--red-primary);box-shadow:0 0 0 4px rgba(226,75,74,.25);}
.hero-title{font-size:clamp(40px,5vw,58px);font-weight:700;line-height:1.3;letter-spacing:8px;text-indent:8px;margin:28px 0 12px;}
.ht-line{display:block;}
.ht-accent{color:transparent;background:linear-gradient(100deg,#FF9B9A,var(--red-primary) 55%,#F09595);-webkit-background-clip:text;background-clip:text;}
.hero-tagline{font-family:var(--mono);font-size:12px;letter-spacing:3px;color:var(--red-light);opacity:.85;margin-bottom:20px;}
.hero-sub{font-size:16px;color:rgba(245,239,239,.78);max-width:540px;}
.hero-sub b{color:#fff;font-weight:600;}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:38px;margin-top:44px;padding-top:26px;border-top:1px solid rgba(255,255,255,.12);}
.hero-stats li{display:flex;flex-direction:column;}
.hero-stats b{font-size:22px;font-weight:700;color:#fff;letter-spacing:1px;}
.hero-stats b::after{content:"";display:block;width:22px;height:2px;background:var(--red-primary);margin:6px 0 8px;border-radius:2px;}
.hero-stats span{font-size:12.5px;color:rgba(245,239,239,.6);letter-spacing:1px;}

/* Hero 视觉 */
.hero-visual{position:relative;min-height:420px;}
.hv-card{
  position:absolute;border-radius:16px;backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 24px 60px rgba(0,0,0,.35);
}
.hv-card-main{
  top:8%;right:6%;width:min(380px,88%);
  background:linear-gradient(160deg,rgba(255,255,255,.10),rgba(255,255,255,.04));
  padding:20px 22px 24px;
}
.hv-card-head{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:11.5px;letter-spacing:2px;color:rgba(245,239,239,.85);margin-bottom:18px;}
.hv-card-head img{width:22px;height:22px;}
.hv-status{margin-left:auto;width:9px;height:9px;border-radius:50%;background:#5BD47B;box-shadow:0 0 10px #5BD47B;}
.hv-barcode{display:flex;align-items:flex-end;gap:4px;height:100px;justify-content:center;}
.hv-barcode i{
  width:calc(var(--w) * 1px);height:calc(var(--h) * 1%);
  background:linear-gradient(180deg,#fff,rgba(255,255,255,.75));
  border-radius:1px;
}
.hv-barcode-num{
  margin-top:14px;text-align:center;font-family:var(--mono);
  font-size:11px;letter-spacing:3px;color:rgba(245,239,239,.55);
}
.hv-chip{left:2%;top:0;width:112px;padding:16px;color:#FFB4B3;}
.hv-chip svg{color:var(--red-light);}
.hv-chip b{display:block;font-size:14px;margin-top:10px;letter-spacing:2px;}
.hv-chip span{font-size:11px;color:rgba(245,239,239,.55);}
.hv-scan{bottom:12%;left:0;width:120px;padding:16px;color:#FFB4B3;animation-delay:.4s;}
.hv-scan svg{color:var(--red-light);}
.hv-scan b{display:block;font-size:13px;margin-top:10px;letter-spacing:2px;}
.hv-scan span{font-size:11px;color:rgba(245,239,239,.55);}
.hv-print{bottom:-6%;right:0;width:120px;padding:16px;color:#FFB4B3;}
.hv-print svg{color:var(--red-light);}
.hv-print b{display:block;font-size:12px;margin-top:10px;letter-spacing:1.5px;}
.hv-print span{font-size:11px;color:rgba(245,239,239,.55);}
.hv-diamond{
  position:absolute;top:-34px;right:26%;width:70px;height:70px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,#FFE9E8,#FCEBEB);border-radius:18px;
  box-shadow:0 18px 44px rgba(226,75,74,.35);transform:rotate(6deg);
}
.hv-diamond svg{width:40px;height:40px;}

@keyframes floatY{0%,100%{transform:translateY(0);}50%{transform:translateY(-12px);}}
.hv-chip,.hv-scan,.hv-print{animation:floatY 5s ease-in-out infinite;}
.hv-scan{animation-delay:1.2s;}
.hv-print{animation-delay:2s;}

.hero-scroll{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;}
.hero-scroll span{
  display:block;width:22px;height:36px;border:2px solid rgba(255,255,255,.35);
  border-radius:12px;position:relative;
}
.hero-scroll span::after{
  content:"";position:absolute;left:50%;top:7px;width:4px;height:8px;margin-left:-2px;
  background:var(--red-light);border-radius:2px;animation:scrollDot 1.8s infinite;
}
@keyframes scrollDot{0%{opacity:1;transform:translateY(0);}70%{opacity:0;transform:translateY(12px);}100%{opacity:0;}}

/* ---------------- 品牌矩阵 ---------------- */
.brand-strip{border-bottom:1px solid var(--line);background:var(--paper-2);padding:34px 0;}
.brand-strip-label{text-align:center;font-size:12.5px;color:var(--ink-3);letter-spacing:3px;margin-bottom:24px;}
.brand-logos{display:flex;flex-wrap:wrap;justify-content:center;gap:18px 46px;align-items:center;}
.bl{display:inline-flex;flex-direction:column;align-items:center;line-height:1.3;color:var(--ink-2);transition:color .2s,transform .2s;}
.bl:hover{color:var(--red-deep);transform:translateY(-2px);}
.bl b{font-size:19px;font-weight:700;letter-spacing:1.5px;}
.bl i{font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:2px;margin-top:2px;}
.bl-zebra b{font-weight:800;}
.bl-tsc b{font-weight:800;}
.bl-datalogic b{font-weight:600;}

/* ---------------- 业务板块 ---------------- */
.biz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.biz-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;display:flex;flex-direction:column;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;
}
.biz-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:var(--red-pale);}
.biz-icon{
  width:54px;height:54px;border-radius:14px;flex:none;
  display:flex;align-items:center;justify-content:center;color:var(--red-deep);
  background:linear-gradient(145deg,var(--red-bg),#FFF);
  border:1px solid var(--red-pale);
}
.biz-icon svg{width:26px;height:26px;}
.biz-card h3{font-size:18px;font-weight:700;margin:18px 0 10px;letter-spacing:1px;}
.biz-card p{font-size:13.5px;color:var(--ink-2);flex:1;}
.card-link{display:inline-flex;align-items:center;gap:4px;margin-top:16px;font-size:13.5px;font-weight:600;color:var(--red-deep);}
.card-link:hover{gap:8px;color:var(--red-primary);}
.card-link{transition:gap .25s var(--ease),color .2s;}

/* ---------------- 产品中心 ---------------- */
.filter-bar{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:40px;}
.filter-btn{
  padding:9px 20px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);font-size:14px;font-weight:500;
  transition:all .22s var(--ease);
}
.filter-btn:hover{border-color:var(--red-pale);color:var(--red-deep);}
.filter-btn.active{background:linear-gradient(135deg,var(--red-primary),var(--red-deep));border-color:transparent;color:#fff;box-shadow:0 6px 16px rgba(163,45,45,.24);}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.product-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),opacity .3s,filter .3s;
}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.product-img{aspect-ratio:4/3;overflow:hidden;background:#fff;display:flex;align-items:center;justify-content:center;}
.product-img img{width:100%;height:100%;object-fit:contain;transition:transform .5s var(--ease);}
.product-card:hover .product-img img{transform:scale(1.06);}
.product-body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1;border-top:1px solid var(--paper-2);}
.product-brand{font-family:var(--mono);font-size:11px;letter-spacing:1.5px;color:var(--red-deep);font-weight:700;margin-bottom:6px;}
.product-body h3{font-size:16.5px;font-weight:700;letter-spacing:.5px;margin-bottom:8px;}
.product-body p{font-size:13px;color:var(--ink-2);flex:1;}
.product-tag{
  align-self:flex-start;margin-top:14px;font-size:11.5px;color:var(--red-deep);
  background:var(--red-bg);border:1px solid var(--red-pale);border-radius:6px;padding:2px 9px;
}
.product-card.is-hide{display:none;}
.product-card-cta{background:linear-gradient(160deg,var(--red-bg),#FFF7F7);border-style:dashed;border-color:var(--red-pale);}
.product-card-cta:hover{transform:none;box-shadow:var(--shadow-sm);}
.product-cta{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:36px 26px;height:100%;}
.product-cta h3{font-size:18px;margin-bottom:10px;}
.product-cta p{font-size:13.5px;color:var(--ink-2);margin-bottom:20px;}
.product-cta .btn{padding:10px 24px;font-size:14px;}

/* ---------------- 下载中心 ---------------- */
.dl-group{margin-bottom:44px;}
.dl-group:last-of-type{margin-bottom:24px;}
.dl-group-title{
  display:flex;align-items:center;gap:10px;
  font-size:18px;font-weight:700;letter-spacing:2px;margin-bottom:18px;
}
.dl-group-title::before{
  content:"";width:9px;height:9px;flex:none;
  background:var(--red-primary);transform:rotate(45deg);border-radius:2px;
}
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.dl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;display:flex;gap:16px;align-items:center;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;
}
.dl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--red-pale);}
.dl-ico{
  width:30px;height:30px;flex:none;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  color:var(--red-deep);background:var(--red-bg);border:1px solid var(--red-pale);
}
.dl-ico svg{width:15px;height:15px;}
.dl-info{flex:1;min-width:0;}
.dl-info b{display:block;font-size:15px;font-weight:700;letter-spacing:.5px;margin-bottom:5px;}
.dl-info p{font-size:12.5px;color:var(--ink-2);line-height:1.6;}
.dl-meta{display:block;font-family:var(--mono);font-size:11px;color:var(--ink-3);margin-top:7px;letter-spacing:1px;}
.dl-btn{flex:none;padding:9px 20px;font-size:13.5px;}
.dl-note{text-align:center;font-size:13px;color:var(--ink-2);margin-top:10px;}

/* ---------------- RFID 与软件 ---------------- */
.rfid-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-bottom:44px;}
.rfid-col{
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);padding:30px 28px;
}
.rfid-col-title{
  display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;
  letter-spacing:2px;margin-bottom:20px;
}
.rfid-col-title::before{content:"";width:9px;height:9px;background:var(--red-primary);transform:rotate(45deg);border-radius:2px;}
.rfid-list{display:flex;flex-direction:column;gap:18px;}
.rfid-list li{display:flex;gap:14px;}
.rfid-list-ico{
  width:42px;height:42px;flex:none;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:rgba(226,75,74,.14);color:#FF9B9A;border:1px solid rgba(226,75,74,.3);
}
.rfid-list-ico svg{width:20px;height:20px;}
.rfid-list b{display:block;font-size:14.5px;color:#fff;margin-bottom:2px;}
.rfid-list p{font-size:13px;color:rgba(245,239,239,.62);}
.rfid-foot{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);padding-top:30px;
}
.rfid-foot p{color:rgba(245,239,239,.8);font-size:14.5px;}

/* ---------------- 标签代打印 ---------------- */
.labels-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.labels-visual{position:relative;}
.labels-photo{
  border-radius:20px;overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-lg);aspect-ratio:4/3.4;
}
.labels-photo img{width:100%;height:100%;object-fit:cover;}
.labels-tag{
  position:absolute;background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow-md);padding:12px 16px;
}
.labels-tag-1{top:-22px;right:26px;transform:rotate(3deg);}
.labels-tag-2{bottom:-20px;left:22px;transform:rotate(-3deg);}
.labels-tag b{display:block;font-size:13.5px;font-weight:700;letter-spacing:1px;}
.labels-tag span{font-size:11px;color:var(--ink-3);letter-spacing:1px;}
.lt-barcode{display:flex;gap:2.5px;margin-bottom:7px;align-items:flex-end;height:22px;}
.lt-barcode i{width:3px;background:var(--ink);border-radius:1px;}
.lt-barcode i:nth-child(1){height:100%;}
.lt-barcode i:nth-child(2){height:70%;}
.lt-barcode i:nth-child(3){height:100%;}
.lt-barcode i:nth-child(4){height:55%;}
.lt-barcode i:nth-child(5){height:100%;}
.lt-barcode i:nth-child(6){height:80%;}
.lt-barcode i:nth-child(7){height:100%;}
.lt-barcode i:nth-child(8){height:60%;}
.lt-barcode i:nth-child(9){height:100%;}
.lt-barcode i:nth-child(10){height:75%;}
.lt-barcode i:nth-child(11){height:100%;}
.lt-barcode i:nth-child(12){height:65%;}
.lt-barcode i:nth-child(13){height:100%;}
.labels-content h3{font-size:26px;font-weight:700;letter-spacing:1px;margin-bottom:12px;}
.labels-lead{font-size:15px;color:var(--ink-2);margin-bottom:26px;}
.labels-list{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:28px;}
.labels-list li{
  background:var(--paper-2);border:1px solid var(--line);border-radius:12px;padding:16px 18px;
  transition:border-color .25s,transform .25s var(--ease);
}
.labels-list li:hover{border-color:var(--red-pale);transform:translateY(-2px);}
.labels-list b{display:block;font-size:15px;font-weight:700;margin-bottom:4px;letter-spacing:.5px;}
.labels-list p{font-size:12.5px;color:var(--ink-2);}
.labels-steps{display:flex;gap:12px;margin-bottom:30px;flex-wrap:wrap;}
.labels-steps li{
  flex:1;min-width:120px;display:flex;align-items:center;gap:9px;
  font-size:12.5px;color:var(--ink-2);
}
.labels-steps span{
  width:26px;height:26px;flex:none;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--red-bg);color:var(--red-deep);font-weight:700;font-size:12.5px;border:1px solid var(--red-pale);
}

/* ---------------- 为什么选择珩真 ---------------- */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.why-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;
  position:relative;overflow:hidden;transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.why-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.why-num{
  position:absolute;top:14px;right:18px;font-family:var(--mono);font-size:40px;font-weight:800;
  color:var(--red-bg);line-height:1;transition:color .3s;
}
.why-card:hover .why-num{color:var(--red-pale);}
.why-card h3{font-size:17px;font-weight:700;margin-bottom:10px;letter-spacing:.5px;}
.why-card p{font-size:13.5px;color:var(--ink-2);}

/* ---------------- 关于我们 ---------------- */
.about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:center;}
.about-visual{display:flex;flex-direction:column;align-items:center;gap:26px;text-align:center;}
.about-mark{filter:drop-shadow(0 16px 36px rgba(163,45,45,.22));}
.about-quote{
  font-size:15px;color:var(--ink-2);line-height:2;letter-spacing:1px;
  border-left:3px solid var(--red-primary);padding-left:18px;text-align:left;
}
.about-content p{font-size:14.5px;color:var(--ink-2);margin-bottom:14px;}
.about-lead{font-size:16px !important;color:var(--ink) !important;font-weight:600;}
.about-en{
  font-family:var(--mono);font-size:12px !important;letter-spacing:2px;color:var(--red-deep) !important;
  border-top:1px dashed var(--red-pale);border-bottom:1px dashed var(--red-pale);
  padding:10px 0;margin:8px 0 16px !important;
}
.about-points{display:flex;flex-direction:column;gap:10px;}
.about-points li{
  display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-2);
}
.about-points li::before{
  content:"";width:8px;height:8px;flex:none;background:var(--red-primary);
  transform:rotate(45deg);border-radius:2px;
}

/* ---------------- 联系我们 ---------------- */
.section-contact{background:linear-gradient(180deg,var(--paper-2),var(--red-bg));}
.contact-card{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;
  background:#fff;border:1px solid var(--line);border-radius:22px;
  padding:52px;box-shadow:var(--shadow-md);
}
.contact-info .section-head-contact p{font-size:14px;}
.contact-list{display:flex;flex-direction:column;gap:18px;}
.contact-list li{display:flex;gap:14px;align-items:flex-start;}
.contact-ico{
  width:44px;height:44px;flex:none;border-radius:12px;display:flex;align-items:center;justify-content:center;
  color:var(--red-deep);background:var(--red-bg);border:1px solid var(--red-pale);
}
.contact-ico svg{width:20px;height:20px;}
.contact-list b{display:block;font-size:14.5px;font-weight:700;margin-bottom:2px;}
.contact-list p{font-size:13px;color:var(--ink-2);}
.contact-form{
  background:var(--paper-2);border:1px solid var(--line);border-radius:18px;
  padding:32px 30px;
}
.contact-form h3{font-size:19px;font-weight:700;letter-spacing:1px;margin-bottom:4px;}
.contact-form-sub{font-size:13px;color:var(--ink-2);margin-bottom:22px;}
.form-row{margin-bottom:16px;}
.form-row label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:6px;}
.form-row input,.form-row select,.form-row textarea{
  width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:10px;
  font-family:inherit;font-size:14px;color:var(--ink);background:#fff;
  transition:border-color .2s,box-shadow .2s;
}
.form-row textarea{resize:vertical;}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;border-color:var(--red-primary);box-shadow:0 0 0 3px rgba(226,75,74,.12);
}
.form-tip{font-size:11.5px;color:var(--ink-3);margin-top:12px;text-align:center;}

/* ---------------- 页脚 ---------------- */
.site-footer{background:var(--dark);color:rgba(245,239,239,.75);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.footer-brand .brand-cn{color:#fff;}
.footer-brand .brand-en{color:var(--red-light);}
.footer-brand p{margin-top:14px;font-size:13px;line-height:2;color:rgba(245,239,239,.6);}
.footer-col h4{font-size:14.5px;color:#fff;font-weight:700;letter-spacing:2px;margin-bottom:16px;}
.footer-col a{display:block;font-size:13.5px;color:rgba(245,239,239,.65);padding:5px 0;transition:color .2s,padding-left .2s;}
.footer-col a:hover{color:var(--red-light);padding-left:5px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 28px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:rgba(245,239,239,.45);
}
.footer-bottom .container{padding:0;}
@media(max-width:600px){.footer-bottom{justify-content:center;text-align:center;}}

/* ---------------- 返回顶部 ---------------- */
.back-top{
  position:fixed;right:26px;bottom:30px;z-index:90;
  width:46px;height:46px;border-radius:13px;border:none;
  background:linear-gradient(135deg,var(--red-primary),var(--red-deep));color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(163,45,45,.35);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:all .3s var(--ease);
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{transform:translateY(-3px);}

/* ---------------- 滚动显现 ---------------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------------- 响应式 ---------------- */
@media(max-width:1024px){
  .biz-grid,.why-grid,.dl-grid{grid-template-columns:repeat(2,1fr);}
  .product-grid{grid-template-columns:repeat(2,1fr);}
  .hero-inner{grid-template-columns:1fr;gap:64px;}
  .hero-visual{min-height:380px;max-width:560px;margin:0 auto;width:100%;}
  .labels-grid,.about-grid,.rfid-grid,.contact-card{grid-template-columns:1fr;gap:40px;}
  .contact-card{padding:36px 30px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:820px){
  .section{padding:72px 0;}
  .main-nav{
    position:fixed;top:var(--nav-h);left:0;right:0;
    background:#fff;flex-direction:column;gap:0;
    padding:14px 22px 22px;border-bottom:1px solid var(--line);
    box-shadow:0 20px 40px rgba(31,31,31,.10);
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:all .3s var(--ease);margin-left:0;
  }
  .main-nav.open{transform:translateY(0);opacity:1;visibility:visible;}
  .main-nav a{padding:13px 8px;border-bottom:1px solid var(--paper-2);font-size:15px;}
  .main-nav a::after{display:none;}
  .nav-toggle{display:flex;}
  .header-tel span{display:none;}
  .hero{padding-top:calc(var(--nav-h) + 40px);}
  .hero-stats{gap:24px;}
  .biz-grid,.why-grid,.product-grid,.labels-list,.dl-grid{grid-template-columns:1fr;}
  .dl-card{flex-wrap:wrap;}
  .labels-steps li{min-width:100%;}
}
@media(max-width:520px){
  .container{padding:0 18px;}
  .hero-title{font-size:32px;letter-spacing:5px;text-indent:5px;}
  .hero-visual{min-height:340px;}
  .hv-card-main{width:100%;right:0;}
  .hv-chip{left:0;top:-6px;}
  .hv-diamond{display:none;}
  .brand-cn{font-size:17px;}
  .brand-en{display:none;}
  .filter-bar{justify-content:flex-start;overflow-x:auto;flex-wrap:nowrap;padding-bottom:6px;}
  .filter-btn{flex:none;}
  .footer-grid{grid-template-columns:1fr;}
}

/* ============================================================
   下载中心独立页（downloads.html）· 与首页同风格
   ============================================================ */
.dlpage-hero{
  position:relative;overflow:hidden;text-align:center;color:#fff;
  background:var(--dark);
  padding:calc(var(--nav-h) + 52px) 0 60px;
}
.dlpage-hero .hero-bg{position:absolute;inset:0;pointer-events:none;}
.dlpage-hero .hero-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(240,149,149,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(240,149,149,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 90% 80% at 50% 20%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 90% 80% at 50% 20%,#000 30%,transparent 75%);
}
.dlpage-hero .hero-glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;}
.dlpage-hero .hero-glow-1{width:540px;height:540px;background:rgba(226,75,74,.32);top:-190px;left:50%;transform:translateX(-50%);}
.dlpage-hero .hero-glow-2{width:440px;height:440px;background:rgba(163,45,45,.38);bottom:-230px;left:-140px;}
.dlpage-hero-inner{position:relative;z-index:2;}
.dlpage-hero .crumb{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:2px;color:rgba(245,239,239,.6);margin-bottom:20px;
}
.dlpage-hero .crumb a{color:rgba(245,239,239,.6);}
.dlpage-hero .crumb a:hover{color:var(--red-light);}
.dlpage-hero .crumb i{font-style:normal;color:var(--red-light);}
.dlpage-hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12px;letter-spacing:3px;color:var(--red-light);
  border:1px solid rgba(240,149,149,.35);border-radius:999px;
  padding:6px 16px;background:rgba(226,75,74,.08);margin-bottom:18px;
}
.dlpage-hero-eyebrow::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--red-primary);
  box-shadow:0 0 0 4px rgba(226,75,74,.25);
}
.dlpage-hero h1{font-size:clamp(34px,4.4vw,50px);font-weight:700;letter-spacing:8px;text-indent:8px;line-height:1.25;}
.dlpage-hero-sub{margin:16px auto 0;font-size:15px;color:rgba(245,239,239,.75);max-width:640px;line-height:1.9;}
.dlpage-hero-sub b{color:#fff;}
.dlpage-hero-stats{
  display:inline-flex;gap:34px;margin-top:30px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
}
.dlpage-hero-stats span{display:flex;flex-direction:column;align-items:center;}
.dlpage-hero-stats b{font-family:var(--mono);font-size:20px;color:#fff;font-weight:700;line-height:1;}
.dlpage-hero-stats b::after{content:"";display:block;width:20px;height:2px;background:var(--red-primary);margin:8px auto;border-radius:2px;}
.dlpage-hero-stats i{font-style:normal;font-size:12px;color:rgba(245,239,239,.6);letter-spacing:1px;}

/* 内容区 */
.dlpage{background:var(--paper-2);padding:56px 0 96px;}
.dlpage-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:12px;}
.dlpage-tabs-caption{
  width:100%;display:flex;align-items:center;gap:8px;
  font-size:12.5px;color:var(--ink-3);letter-spacing:2px;
}
.dlpage-tabs-caption::before{content:"";width:8px;height:8px;flex:none;background:var(--red-primary);transform:rotate(45deg);border-radius:2px;}
.dlpage-tab{
  padding:9px 20px;border-radius:999px;border:1px solid var(--line);background:#fff;
  color:var(--ink-2);font-size:13.5px;font-weight:500;transition:all .22s var(--ease);
}
.dlpage-tab:hover{border-color:var(--red-pale);color:var(--red-deep);transform:translateY(-1px);}
.dlpage-tab.active{
  background:linear-gradient(135deg,var(--red-primary),var(--red-deep));
  border-color:transparent;color:#fff;box-shadow:0 6px 16px rgba(163,45,45,.24);
}
.dlpage-tabs-type{margin-bottom:30px;}
.dlpage-tabs-type .dlpage-tab{padding:7px 16px;font-size:13px;background:#fff;}
.dlpage-tabs-type .dlpage-tab.active{
  background:linear-gradient(135deg,var(--red-primary),var(--red-deep));
  border-color:transparent;color:#fff;box-shadow:0 6px 16px rgba(163,45,45,.24);
}

/* 下载表格 */
.dlpage-table-wrap{
  border:1px solid var(--line);border-radius:18px;overflow:hidden;
  background:#fff;box-shadow:var(--shadow-md);
}
.dlpage-table{width:100%;border-collapse:collapse;font-size:13.5px;}
.dlpage-table thead th{
  background:#fff;color:var(--ink-3);font-weight:600;text-align:left;
  padding:15px 18px;border-bottom:1px solid var(--line);
  font-size:12px;letter-spacing:2px;white-space:nowrap;
}
.dlpage-table td{padding:14px 18px;border-bottom:1px solid var(--paper-2);vertical-align:middle;}
.dlpage-table tbody tr:last-child td{border-bottom:none;}
.dlpage-table tbody tr{transition:background .2s;}
.dlpage-table tbody tr:hover{background:linear-gradient(90deg,var(--red-bg),#FFF);}
.dlpage-table .fname{display:flex;align-items:center;gap:13px;}
.file-ico{
  width:34px;height:34px;flex:none;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
}
.file-ico svg{width:17px;height:17px;}
.ico-driver{background:var(--red-bg);color:var(--red-deep);border:1px solid var(--red-pale);}
.ico-tool{background:#FFF4E3;color:#B06B12;border:1px solid #F4DFC0;}
.ico-software{background:#E9F3FD;color:#1F6FB5;border:1px solid #CBE3F7;}
.ico-brochure{background:#F3ECFB;color:#7B52D1;border:1px solid #E2D4F5;}
.ico-manual{background:#F0F0F0;color:#5A5A5A;border:1px solid #DDDDDD;}
.file-txt{min-width:0;}
.file-txt b{display:block;font-size:14px;font-weight:600;color:var(--ink);transition:color .2s;}
.dlpage-table tbody tr:hover .file-txt b{color:var(--red-deep);}
.file-txt span{display:block;font-size:12px;color:var(--ink-3);margin-top:2px;}
.dlpage-table .fmodel{color:var(--ink-2);font-size:13px;white-space:nowrap;}
.dlpage-table .fmeta{font-family:var(--mono);font-size:12px;color:var(--ink-3);white-space:nowrap;}
.dlpage-table .fdate{font-size:12.5px;color:var(--ink-3);white-space:nowrap;}
.dlpage-table .fop{text-align:right;white-space:nowrap;}
.dl-btn-sm{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 18px;border-radius:999px;font-size:13px;font-weight:600;
  color:var(--red-deep);border:1px solid var(--red-pale);background:#fff;
  transition:all .22s var(--ease);
}
.dl-btn-sm:hover{
  background:linear-gradient(135deg,var(--red-primary),var(--red-deep));
  color:#fff;border-color:transparent;box-shadow:0 6px 14px rgba(163,45,45,.25);
}
.dlpage-empty td{text-align:center;color:var(--ink-3);padding:44px 16px;font-size:14px;}
.dlpage-empty a{color:var(--red-deep);}
.tbadge{display:inline-block;font-size:11.5px;font-weight:600;padding:3px 10px;border-radius:6px;white-space:nowrap;}
.tb-driver{background:var(--red-bg);color:var(--red-deep);border:1px solid var(--red-pale);}
.tb-tool{background:#FFF4E3;color:#B06B12;border:1px solid #F4DFC0;}
.tb-software{background:#E9F3FD;color:#1F6FB5;border:1px solid #CBE3F7;}
.tb-brochure{background:#F3ECFB;color:#7B52D1;border:1px solid #E2D4F5;}
.tb-manual{background:#F0F0F0;color:#5A5A5A;border:1px solid #DDDDDD;}
@media(max-width:820px){
  .dlpage-hero{padding-top:calc(var(--nav-h) + 40px);}
  .dlpage-hero-stats{gap:22px;}
  .dlpage-table-wrap{overflow-x:auto;}
  .dlpage-table{min-width:800px;}
}