/* ===== 深色科技风基础 ===== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#0a0f1e;--bg2:#0f1626;--card:#121a2c;--card2:#162034;
  --border:#1e2a42;--text:#e8edf6;--muted:#8b98b5;
  --primary:#3b82f6;--cyan:#22d3ee;--green:#34d399;--amber:#fbbf24;
  --glow:0 0 24px rgba(59,130,246,.35);
  --radius:14px;
}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:'Segoe UI',system-ui,'PingFang SC','Microsoft YaHei',sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--cyan);text-decoration:none}
h1,h2,h3,h4{line-height:1.3;color:#fff}

/* ===== 布局 ===== */
.container{max-width:1180px;margin:0 auto;padding:0 22px}
main{padding:30px 0 60px;min-height:60vh}

/* ===== 顶部导航 ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(10,15,30,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.site-header .container{display:flex;justify-content:space-between;align-items:center;height:64px}
.logo{display:flex;align-items:center;gap:10px;color:#fff}
.logo-mark{background:linear-gradient(135deg,var(--primary),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:900;font-size:15px;letter-spacing:1px}
.logo-text{font-size:18px;font-weight:700}
.logo-text small{display:block;font-size:10px;font-weight:300;opacity:.6;letter-spacing:3px;margin-top:1px}
nav{display:flex;gap:28px}
nav a{color:var(--muted);font-size:15px;font-weight:500;transition:color .2s;position:relative}
nav a:hover{color:#fff}
nav a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:linear-gradient(90deg,var(--primary),var(--cyan));transition:width .25s}
nav a:hover::after{width:100%}

/* ===== Hero ===== */
.hero{position:relative;border-radius:var(--radius);padding:64px 34px;margin:26px 0 36px;overflow:hidden;background:radial-gradient(ellipse at 20% 0%,#16284d 0%,#0c1430 40%,#0a0f1e 100%)}
.hero::before{content:"";position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cdefs%3E%3Cpattern id='g' width='60' height='60' patternUnits='userSpaceOnUse'%3E%3Ccircle cx='2' cy='2' r='1' fill='rgba(59,130,246,.08)'/%3E%3C/pattern%3E%3C/defs%3E%3Crect width='100%25' height='100%25' fill='url(%23g)'/%3E%3C/svg%3E");pointer-events:none}
.hero::after{content:"";position:absolute;right:-160px;top:-160px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(34,211,238,.14),transparent 70%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;position:relative;z-index:1}
.hero-tag{display:inline-block;background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.3);color:var(--cyan);font-size:13px;padding:5px 14px;border-radius:20px;margin-bottom:18px;font-weight:500}
.hero h1{font-size:38px;font-weight:800;line-height:1.22;margin-bottom:18px}
.hero .grad{background:linear-gradient(90deg,var(--primary),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{color:var(--muted);font-size:16px;max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 28px;border-radius:10px;font-weight:600;font-size:15px;transition:all .2s;border:none;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--cyan));color:#071022;box-shadow:0 6px 22px rgba(34,211,238,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(34,211,238,.5)}
.btn-ghost{background:rgba(255,255,255,.04);color:var(--cyan);border:1px solid rgba(34,211,238,.35)}
.btn-ghost:hover{background:rgba(34,211,238,.1)}
.btn-call{background:linear-gradient(135deg,var(--green),var(--primary));color:#071022;box-shadow:0 4px 16px rgba(52,211,153,.35)}
.btn-call:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(52,211,153,.5)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.stat-card{background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:14px;padding:20px;text-align:center;transition:all .2s}
.stat-card:hover{border-color:rgba(34,211,238,.4);box-shadow:var(--glow)}
.stat-num{display:block;font-size:26px;font-weight:800;background:linear-gradient(90deg,var(--primary),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-label{font-size:12px;color:var(--muted);margin-top:4px}

/* ===== 区块通用 ===== */
section{margin-bottom:34px}
.sec-head{margin-bottom:20px}
.sec-head h2{font-size:24px;font-weight:800;position:relative;padding-left:16px}
.sec-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:linear-gradient(180deg,var(--primary),var(--cyan))}
.sec-sub{color:var(--muted);margin-top:6px;padding-left:16px;font-size:14px}
.group{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:0 6px 24px rgba(0,0,0,.25)}
.group-head{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.group-icon{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--cyan));color:#071022;display:flex;align-items:center;justify-content:center;font-size:19px;flex-shrink:0;font-weight:800}
.group-count{font-size:13px;color:var(--muted);background:rgba(255,255,255,.05);padding:3px 12px;border-radius:12px}
.group-more{margin-left:auto;font-size:14px;color:var(--cyan);font-weight:600}

/* ===== 产品卡片（深色 + 发光） ===== */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;color:inherit;transition:all .25s;position:relative;box-shadow:0 4px 14px rgba(0,0,0,.2)}
.card:hover{transform:translateY(-5px);border-color:rgba(34,211,238,.5);box-shadow:0 14px 34px rgba(0,0,0,.4),var(--glow)}
.card-img{height:170px;background:#0c1322;display:flex;align-items:center;justify-content:center;padding:16px;position:relative;overflow:hidden}
.card-img::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 130%,rgba(59,130,246,.15),transparent 60%);pointer-events:none}
.card-img img{max-height:100%;max-width:100%;object-fit:contain;position:relative;z-index:1;filter:drop-shadow(0 6px 14px rgba(0,0,0,.4))}
.card-body{padding:16px 18px 20px;display:flex;flex-direction:column;flex:1}
.card-cat{display:inline-block;align-self:flex-start;background:rgba(34,211,238,.1);color:var(--cyan);font-size:12px;padding:2px 10px;border-radius:10px;margin-bottom:9px;font-weight:600}
.card h3{font-size:15px;color:#fff;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-en{font-size:12px;color:#5b6a85;margin-bottom:8px}
.card-sum{font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ===== 分类 chips ===== */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{background:var(--card);color:var(--cyan);padding:9px 18px;border-radius:20px;font-size:14px;font-weight:600;border:1px solid var(--border);transition:all .2s}
.chip:hover{background:linear-gradient(135deg,var(--primary),var(--cyan));color:#071022;border-color:transparent}
.cat-quick{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px}

/* ===== 应用场景 ===== */
.apps-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.app-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:all .2s}
.app-card:hover{border-color:rgba(34,211,238,.4);transform:translateY(-3px)}
.app-icon{font-size:28px;display:block;margin-bottom:12px}
.app-card h3{font-size:16px;margin-bottom:6px}
.app-card p{font-size:13px;color:var(--muted)}

/* ===== 信任区 ===== */
.trust{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px}
.trust-inner h2{text-align:center;font-size:24px;margin-bottom:6px;padding-left:0}
.trust-inner h2::before{display:none}
.trust-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-top:24px}
.trust-grid div{text-align:center;padding:18px}
.t-icon{font-size:30px;display:block;margin-bottom:10px}
.trust-grid h3{font-size:16px;margin-bottom:4px}
.trust-grid p{font-size:13px;color:var(--muted)}

/* ===== 产品详情页 ===== */
.product-detail{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px;box-shadow:0 8px 30px rgba(0,0,0,.3)}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:20px}
.breadcrumb a{color:var(--cyan)}
.breadcrumb .sep{margin:0 6px;color:#3a4a66}
.pd-header{margin-bottom:26px}
.pd-header h1{font-size:26px;font-weight:800}
.pd-en{color:var(--muted);font-size:14px;margin-top:6px}
.pd-main{display:flex;gap:34px;flex-wrap:wrap;align-items:flex-start}
.pd-img{flex:1 1 300px;background:radial-gradient(circle at 50% 30%,#16284d,#0c1322);border:1px solid var(--border);border-radius:var(--radius);padding:24px;display:flex;align-items:center;justify-content:center;min-height:250px}
.pd-img img{max-height:320px;object-fit:contain;filter:drop-shadow(0 8px 18px rgba(0,0,0,.5))}
.pd-info{flex:2 1 380px}
.pd-info p{margin-bottom:12px;color:var(--text)}
.keyparams{list-style:none;margin:14px 0;border:1px solid var(--border);border-radius:10px;overflow:hidden}
.kp-item{display:flex;align-items:center;gap:10px;padding:10px 16px;border-bottom:1px solid var(--border);font-size:14px;color:var(--text)}
.kp-item:last-child{border-bottom:none}
.kp-check{color:var(--green);font-weight:800}
.cta-box{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;margin-top:30px;background:linear-gradient(135deg,#12203a,#0e1a30);border:1px solid var(--border);border-radius:var(--radius);padding:24px 28px}
.cta-left{flex:1}
.cta-left strong{font-size:17px;color:#fff}
.cta-left p{color:var(--muted);font-size:14px;margin-top:4px}

/* ===== 分类总览 & 关于 ===== */
.page-head{padding:26px 0 20px}
.page-head h1{font-size:30px;font-weight:800}
.page-head .sub{color:var(--muted);margin-top:6px}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:0 8px 30px rgba(0,0,0,.3)}
.cat-card{background:#0e1a30;border:1px solid var(--border);border-radius:12px;overflow:hidden;transition:all .2s}
.cat-card:hover{border-color:rgba(34,211,238,.5);transform:translateY(-3px);box-shadow:var(--glow)}
.cat-card-inner{padding:22px;text-align:center}
.cat-card-icon{font-size:22px;color:var(--cyan);display:block;margin-bottom:8px}
.cat-card h3{font-size:15px;color:#fff}
.about-wrap{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px;box-shadow:0 8px 30px rgba(0,0,0,.3);max-width:820px}
.about-wrap p{margin-bottom:14px;color:var(--text)}
.about-wrap h3{margin:24px 0 14px}
.contact-card{background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:12px;padding:18px 22px}
.contact-card p{margin-bottom:8px}

/* ===== 底部 ===== */
.site-footer{background:#070b16;border-top:1px solid var(--border);color:var(--muted);padding:40px 0 20px;margin-top:50px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px;margin-bottom:24px}
.footer-grid h4{color:#fff;font-size:15px;margin-bottom:12px}
.footer-grid p{font-size:13px;margin-bottom:6px;color:var(--muted)}
.footer-grid a{color:var(--muted)}
.footer-grid a:hover{color:var(--cyan)}
.copyright{font-size:12px;color:#3d4a66;border-top:1px solid var(--border);padding-top:18px;text-align:center}

/* ===== 浮动电话按钮 ===== */
.float-call{position:fixed;right:24px;bottom:28px;background:linear-gradient(135deg,var(--green),var(--primary));color:#071022;padding:14px 22px;border-radius:50px;font-weight:700;font-size:15px;box-shadow:0 8px 26px rgba(34,211,238,.45);z-index:200;transition:transform .2s}
.float-call:hover{transform:translateY(-3px)}

/* ===== 响应式 ===== */
@media(max-width:820px){
  .site-header .container{height:auto;flex-direction:column;padding:14px 22px;gap:10px}
  .hero{padding:40px 22px}.hero h1{font-size:30px}
  .hero-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr 1fr}
  .pd-main{flex-direction:column}
  .card-grid{grid-template-columns:1fr 1fr}.card-img{height:130px}
}
@media(max-width:460px){.card-grid{grid-template-columns:1fr}nav{gap:18px}}