/* ============================================================
   乐康科技 LEK Tech · 官网样式
   设计系统：浅色科技风 / 蓝青渐变主色 / 五产品识别色
   ============================================================ */

:root{
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --ink:#0A1B33;
  --ink-2:#4B5B74;
  --ink-3:#8898B0;
  --primary:#1E6FFF;
  --primary-deep:#0B5CE8;
  --cyan:#00B8E0;
  --green:#18B87A;
  --border:#E4EAF3;
  --border-strong:#D3DCEA;
  --tint-blue:#EDF4FF;
  --grad:linear-gradient(120deg,#1E6FFF 0%,#00B8E0 100%);
  --shadow-sm:0 1px 2px rgba(10,27,51,.04),0 4px 16px rgba(10,27,51,.05);
  --shadow-md:0 4px 12px rgba(10,27,51,.05),0 16px 44px rgba(10,27,51,.09);
  --r-lg:20px;--r-md:14px;--r-sm:10px;
  --nav-h:68px;
  --font:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Noto Sans CJK SC","Microsoft YaHei",-apple-system,"Segoe UI",Roboto,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
img{display:block;max-width:100%}
::selection{background:rgba(30,111,255,.18)}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(22px);animation:rise .7s cubic-bezier(.2,.7,.2,1) forwards;animation-delay:var(--d,0s)}
@keyframes rise{to{opacity:1;transform:none}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(24,184,122,.15)}50%{box-shadow:0 0 0 7px rgba(24,184,122,.07)}}
@keyframes draw{to{stroke-dashoffset:0}}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:11px;font-size:14.5px;font-weight:600;transition:.2s;line-height:1.4}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(30,111,255,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(30,111,255,.4)}
.btn-ghost{border:1.5px solid var(--border-strong);color:var(--ink);background:var(--surface)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-sm{padding:8px 18px;font-size:13.5px}
.btn-white{background:#fff;color:var(--primary)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(4,20,50,.3)}

/* ---------- 导航栏 ---------- */
.nav{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 var(--border)}
.nav .wrap{height:100%;display:flex;align-items:center;gap:36px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:.2px;flex-shrink:0}
.logo-mark{width:34px;height:34px;border-radius:9px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:13px;font-weight:800;box-shadow:0 4px 12px rgba(30,111,255,.35)}
.logo small{font-weight:600;color:var(--ink-3);font-size:11px;letter-spacing:1.5px;display:block;line-height:1}
.nav-links{display:flex;align-items:center;gap:6px;height:100%;flex:1}
.nav-item{position:relative;height:100%;display:flex;align-items:center}
.nav-link{padding:8px 14px;border-radius:9px;font-size:14.5px;color:var(--ink-2);font-weight:500;transition:.18s;display:flex;align-items:center;gap:5px}
.nav-link:hover{color:var(--primary);background:var(--tint-blue)}
.nav-item.active .nav-link{color:var(--primary);font-weight:600}
.nav-link .caret{width:9px;height:9px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:.2s;opacity:.55}
.nav-item:hover .caret{transform:rotate(225deg) translateY(-1px)}
.dropdown{position:absolute;top:calc(100% + 6px);left:50%;transform:translateX(-50%) translateY(8px);width:430px;background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-md);padding:10px;opacity:0;visibility:hidden;transition:.22s cubic-bezier(.2,.7,.2,1)}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dd-item{display:flex;gap:13px;align-items:center;padding:11px 12px;border-radius:11px;cursor:pointer;transition:.15s}
.dd-item:hover{background:var(--tint-blue)}
.dd-icon{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;color:#fff;flex-shrink:0}
.dd-icon svg{width:19px;height:19px}
.dd-name{font-size:14.5px;font-weight:600;line-height:1.3}
.dd-cat{font-size:12px;color:var(--ink-3);line-height:1.4}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.lang-switch{display:flex;background:#EEF2F8;border-radius:99px;padding:3px;gap:2px}
.lang-switch button{padding:5px 13px;border-radius:99px;font-size:12.5px;font-weight:600;color:var(--ink-3);transition:.18s;letter-spacing:.5px}
.lang-switch button.active{background:var(--surface);color:var(--primary);box-shadow:0 1px 4px rgba(10,27,51,.12)}
.hamburger{display:none;width:40px;height:40px;border-radius:10px;place-items:center;color:var(--ink)}

/* ---------- 通用 Section ---------- */
main{padding-top:var(--nav-h)}
section{padding:88px 0}
.eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:700;letter-spacing:2.5px;color:var(--primary);text-transform:uppercase;background:var(--tint-blue);padding:6px 14px;border-radius:99px;margin-bottom:18px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:99px;background:var(--grad)}
.sec-title{font-size:clamp(28px,3.6vw,42px);font-weight:700;letter-spacing:-.5px;line-height:1.22;margin-bottom:14px}
.sec-sub{font-size:16.5px;color:var(--ink-2);max-width:560px}
.sec-head{margin-bottom:52px}
.sec-head.center{text-align:center}
.sec-head.center .sec-sub{margin:0 auto}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;padding:100px 0 110px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);background-size:46px 46px;mask-image:radial-gradient(ellipse 75% 62% at 50% 38%,#000 30%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 75% 62% at 50% 38%,#000 30%,transparent 75%);opacity:.7}
.glow{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none}
.glow-1{width:520px;height:520px;background:rgba(30,111,255,.13);top:-140px;left:-100px}
.glow-2{width:420px;height:420px;background:rgba(0,184,224,.13);top:40px;right:-120px}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--border);padding:7px 16px;border-radius:99px;font-size:13px;color:var(--ink-2);box-shadow:var(--shadow-sm);margin-bottom:26px}
.hero-badge .dot{width:7px;height:7px;border-radius:99px;background:var(--green);animation:pulse 2s infinite}
.hero h1{font-size:clamp(38px,5vw,58px);font-weight:700;letter-spacing:-1.5px;line-height:1.16;margin-bottom:22px}
.hero p.lead{font-size:17px;color:var(--ink-2);max-width:520px;margin-bottom:34px}
.hero-cta{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.hero-meta{display:flex;gap:26px;margin-top:38px;color:var(--ink-3);font-size:13px;align-items:center;flex-wrap:wrap}
.hero-meta span{display:flex;align-items:center;gap:7px}
.hero-visual{position:relative;height:460px}
.viz-card{position:absolute;top:24px;left:6px;right:6px;background:var(--surface);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow-md);padding:20px 22px 16px;animation:float 6s ease-in-out infinite}
.viz-head{display:flex;align-items:center;gap:8px;margin-bottom:14px}
.tl-dots{display:flex;gap:5px}
.tl-dots i{width:9px;height:9px;border-radius:99px;background:#E6ECF5}
.tl-dots i:first-child{background:#FF6B6B}.tl-dots i:nth-child(2){background:#FFC53D}.tl-dots i:nth-child(3){background:#18B87A}
.viz-title{font-size:12px;color:var(--ink-3);font-weight:600;letter-spacing:.5px;margin-left:6px}
.viz-chart svg{display:block;width:100%;height:auto}
.viz-foot{display:flex;gap:18px;margin-top:12px;flex-wrap:wrap}
.viz-stat{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-2)}
.viz-stat b{color:var(--primary);font-size:14px}
.viz-stat .live{width:6px;height:6px;border-radius:99px;background:var(--green);animation:pulse 2s infinite}
.chip{position:absolute;background:var(--surface);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-md);padding:13px 16px;display:flex;gap:11px;align-items:center;animation:float 6s ease-in-out infinite}
.chip-icon{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;color:#fff;flex-shrink:0}
.chip-icon svg{width:18px;height:18px}
.chip b{display:block;font-size:13.5px;line-height:1.3}
.chip small{color:var(--ink-3);font-size:11.5px}
.chip-1{top:-4px;right:-8px;animation-delay:-2s}
.chip-2{bottom:34px;left:-18px;animation-delay:-4s}
.chart-line{stroke-dasharray:900;stroke-dashoffset:900;animation:draw 2.6s .4s ease forwards}

/* ---------- 数据带 ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);overflow:hidden}
.stat{padding:34px 30px;text-align:center;position:relative}
.stat + .stat::before{content:"";position:absolute;left:0;top:26%;height:48%;width:1px;background:var(--border)}
.stat-num{font-size:40px;font-weight:800;letter-spacing:-1px;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1.1}
.stat-label{font-size:13.5px;color:var(--ink-2);margin-top:8px;font-weight:500}

/* ---------- 产品卡片 ---------- */
.products-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:22px}
.p-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:30px 28px;transition:.25s cubic-bezier(.2,.7,.2,1);position:relative;overflow:hidden;cursor:pointer;grid-column:span 2;display:flex;flex-direction:column}
.p-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent}
.p-card::after{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--pa,#1E6FFF);opacity:0;transition:.25s}
.p-card:hover::after{opacity:1}
.p-card.wide{grid-column:span 3;flex-direction:row;gap:22px;align-items:flex-start}
.p-icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;color:#fff;flex-shrink:0;margin-bottom:20px;box-shadow:0 6px 16px var(--pa-shadow,rgba(30,111,255,.3))}
.p-icon svg{width:25px;height:25px}
.p-card.wide .p-icon{margin-bottom:0}
.p-card.wide .p-body{padding-top:2px}
.p-cat{font-size:12px;font-weight:600;letter-spacing:1px;text-transform:uppercase;margin-bottom:7px}
.p-name{font-size:20px;font-weight:700;letter-spacing:-.3px;margin-bottom:8px}
.p-tagline{font-size:13.5px;color:var(--ink-2);margin-bottom:16px;min-height:42px}
.p-tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:20px}
.p-tag{font-size:11.5px;font-weight:600;padding:4px 11px;border-radius:99px;background:#F0F4FA;color:var(--ink-2)}
.p-more{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.p-more svg{width:14px;height:14px;transition:.2s}
.p-card:hover .p-more svg{transform:translateX(4px)}

/* ---------- 技术底座 ---------- */
.tech{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.tech-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.t-card{padding:30px 26px;border-radius:var(--r-md);border:1px solid var(--border);background:var(--bg);transition:.25s}
.t-card:hover{background:var(--surface);box-shadow:var(--shadow-sm);transform:translateY(-4px);border-color:var(--border-strong)}
.t-icon{width:46px;height:46px;border-radius:12px;background:var(--tint-blue);display:grid;place-items:center;color:var(--primary);margin-bottom:20px}
.t-icon svg{width:22px;height:22px}
.t-card h3{font-size:16.5px;font-weight:700;margin-bottom:9px;letter-spacing:-.2px}
.t-card p{font-size:13.5px;color:var(--ink-2);line-height:1.7}

/* ---------- 首页关于 ---------- */
.about-home .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.about-facts{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.fact{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);padding:26px 24px;transition:.25s}
.fact:hover{box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.fact b{display:block;font-size:15px;font-weight:700;margin-bottom:5px}
.fact span{font-size:13px;color:var(--ink-2);line-height:1.65;display:block}
.fact .f-ico{font-size:22px;margin-bottom:14px;display:block}

/* ---------- CTA ---------- */
.cta-band{padding:76px 0}
.cta-inner{background:var(--grad);border-radius:26px;padding:64px 60px;text-align:center;color:#fff;position:relative;overflow:hidden;box-shadow:0 20px 60px rgba(30,111,255,.3)}
.cta-inner::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);background-size:26px 26px;mask-image:radial-gradient(ellipse 70% 90% at 50% 0%,#000,transparent 70%)}
.cta-inner h2{font-size:clamp(26px,3.4vw,38px);font-weight:700;letter-spacing:-.5px;margin-bottom:12px;position:relative}
.cta-inner p{font-size:16px;opacity:.88;margin-bottom:30px;position:relative}
.cta-inner .btn{position:relative}

/* ---------- 页脚 ---------- */
footer{background:#0A1B33;color:#93A6C4;padding:66px 0 0;font-size:13.5px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:50px}
.foot-brand .logo{color:#fff;margin-bottom:18px}
.foot-brand p{line-height:1.8;max-width:280px;font-size:13px}
.foot-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:18px;letter-spacing:.5px}
.foot-col a{display:block;padding:5px 0;transition:.15s;font-size:13.5px}
.foot-col a:hover{color:#fff;transform:translateX(3px)}
.foot-col .f-item{display:flex;gap:10px;padding:5px 0;align-items:flex-start;line-height:1.6}
.foot-col .f-item svg{width:15px;height:15px;flex-shrink:0;margin-top:4px;color:#5F7495}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#5F7495}
.foot-bottom a{color:#5F7495;transition:.15s}
.foot-bottom a:hover{color:#93A6C4}

/* ---------- 产品详情页 ---------- */
.pd-hero{padding:72px 0 64px;position:relative;overflow:hidden;border-bottom:1px solid var(--border);background:linear-gradient(180deg,#FDFEFF,var(--bg))}
.pd-hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative}
.pd-icon-lg{width:72px;height:72px;border-radius:19px;display:grid;place-items:center;color:#fff;margin-bottom:24px;box-shadow:0 12px 30px var(--pa-shadow)}
.pd-icon-lg svg{width:34px;height:34px}
.pd-cat-lg{font-size:13px;font-weight:700;letter-spacing:2px;text-transform:uppercase;margin-bottom:10px}
.pd-hero h2{font-size:clamp(30px,4vw,44px);font-weight:700;letter-spacing:-1px;margin-bottom:14px;line-height:1.2}
.pd-tagline{font-size:16px;color:var(--ink-2);margin-bottom:18px}
.pd-desc{font-size:15px;color:var(--ink-2);line-height:1.85;margin-bottom:32px;max-width:520px}
.pd-cta{display:flex;gap:13px;flex-wrap:wrap}
.pd-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.shot{background:var(--surface);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow-md);aspect-ratio:16/10.5;display:grid;place-items:center;position:relative;overflow:hidden}
.shot::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 30% 20%,var(--pa-tint,rgba(30,111,255,.08)),transparent 60%)}
.shot-inner{text-align:center;position:relative;padding:30px}
.shot-inner .si-icon{width:64px;height:64px;border-radius:16px;display:grid;place-items:center;color:#fff;margin:0 auto 18px;box-shadow:0 10px 26px var(--pa-shadow)}
.shot-inner .si-icon svg{width:30px;height:30px}
.shot-inner b{font-size:17px;display:block;margin-bottom:6px}
.shot-inner small{color:var(--ink-3);font-size:12.5px}
.pd-features{padding:80px 0}
.feat-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.feat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);padding:30px 28px;display:flex;gap:20px;transition:.25s}
.feat-card:hover{box-shadow:var(--shadow-sm);transform:translateY(-4px)}
.feat-ico{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;color:#fff;flex-shrink:0}
.feat-ico svg{width:21px;height:21px}
.feat-card h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.feat-card p{font-size:13.5px;color:var(--ink-2);line-height:1.75}
.back-link{display:inline-flex;align-items:center;gap:7px;color:var(--ink-3);font-size:13.5px;font-weight:600;margin-bottom:30px;transition:.15s}
.back-link:hover{color:var(--primary)}
.back-link svg{width:15px;height:15px}

/* ---------- 下载中心 ---------- */
.dl-list{display:flex;flex-direction:column;gap:22px}
.dl-block{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:34px 36px;display:grid;grid-template-columns:1.15fr 1.6fr auto;gap:34px;align-items:center;transition:.25s}
.dl-block:hover{box-shadow:var(--shadow-sm)}
.dl-info{display:flex;gap:18px;align-items:flex-start}
.dl-info .p-icon{margin-bottom:0;width:54px;height:54px}
.dl-info h3{font-size:19px;font-weight:700;margin-bottom:4px}
.dl-info .dl-cat{font-size:13px;color:var(--ink-2)}
.dl-ver{display:inline-flex;align-items:center;gap:7px;margin-top:12px;font-size:12px;color:var(--ink-3);background:#F0F4FA;padding:4px 12px;border-radius:99px;font-weight:600}
.dl-ver i{width:6px;height:6px;border-radius:99px;background:var(--green)}
.dl-platforms{display:flex;flex-wrap:wrap;gap:10px}
.os-btn{display:flex;align-items:center;gap:9px;padding:11px 18px;border-radius:11px;border:1.5px solid var(--border-strong);font-size:13.5px;font-weight:600;transition:.2s;background:var(--surface);color:var(--ink)}
.os-btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.os-btn svg{width:16px;height:16px}
.os-btn small{color:var(--ink-3);font-weight:500;font-size:11px}
.os-btn.web{background:var(--tint-blue);border-color:transparent;color:var(--primary)}
.dl-qr{text-align:center}
.qr{width:104px;height:104px;border-radius:14px;border:1px solid var(--border);background:#fff;padding:10px;display:grid;place-items:center;overflow:hidden}
.qr img{width:100%;height:100%;object-fit:contain}
.dl-qr small{display:block;margin-top:9px;font-size:11.5px;color:var(--ink-3)}
.dl-note{margin-top:34px;padding:16px 22px;border-radius:12px;background:var(--tint-blue);color:var(--ink-2);font-size:13px;display:flex;gap:10px;align-items:flex-start;line-height:1.7}
.dl-note svg{width:16px;height:16px;flex-shrink:0;margin-top:3px;color:var(--primary)}

/* ---------- 关于页 ---------- */
.mvv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:90px}
.mvv{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:36px 32px;position:relative;overflow:hidden;transition:.25s}
.mvv:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.mvv::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:.3s}
.mvv:hover::before{transform:scaleX(1)}
.mvv .f-ico{font-size:26px;margin-bottom:18px;display:block}
.mvv h3{font-size:18px;font-weight:700;margin-bottom:10px}
.mvv p{font-size:14px;color:var(--ink-2);line-height:1.8}
.timeline{position:relative;max-width:760px;margin:0 auto;padding-left:34px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--primary),var(--cyan));border-radius:99px;opacity:.35}
.tl-item{position:relative;padding:0 0 44px 26px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-34px;top:5px;width:18px;height:18px;border-radius:99px;background:var(--surface);border:4px solid var(--primary);box-shadow:0 0 0 5px rgba(30,111,255,.12)}
.tl-item time{font-size:13px;font-weight:800;color:var(--primary);letter-spacing:1px}
.tl-item h4{font-size:17.5px;font-weight:700;margin:6px 0 8px}
.tl-item p{font-size:14px;color:var(--ink-2);line-height:1.75;max-width:560px}
.contact-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);padding:44px;display:grid;grid-template-columns:repeat(3,1fr);gap:34px}
.c-item{display:flex;gap:15px;align-items:flex-start}
.c-ico{width:44px;height:44px;border-radius:12px;background:var(--tint-blue);color:var(--primary);display:grid;place-items:center;flex-shrink:0}
.c-ico svg{width:20px;height:20px}
.c-item b{display:block;font-size:14.5px;margin-bottom:4px}
.c-item span{font-size:13.5px;color:var(--ink-2);line-height:1.6;display:block}
.c-item a.tel-link{color:var(--primary);font-weight:700;font-size:16px;letter-spacing:.3px}
.c-item .wx-note{display:inline-flex;align-items:center;gap:6px;margin-top:6px;font-size:12px;color:var(--ink-3);background:#F0F4FA;padding:3px 10px;border-radius:99px}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .hero .wrap,.pd-hero .wrap,.about-home .wrap{grid-template-columns:1fr}
  .hero-visual{height:400px;max-width:560px}
  .tech-grid{grid-template-columns:1fr 1fr}
  .products-grid{grid-template-columns:1fr 1fr}
  .p-card,.p-card.wide{grid-column:span 1}
  .p-card.wide{flex-direction:column}
  .p-card.wide .p-icon{margin-bottom:20px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat:nth-child(3)::before{display:none}
  .dl-block{grid-template-columns:1fr;gap:24px}
  .dl-qr{display:flex;gap:16px;align-items:center;text-align:left}
  .mvv-grid,.contact-card{grid-template-columns:1fr}
  .feat-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none;position:absolute;top:var(--nav-h);left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);padding:14px 24px 22px;flex-direction:column;align-items:stretch;height:auto;gap:2px;box-shadow:var(--shadow-md)}
  .nav-links.open{display:flex}
  .nav-item{height:auto}
  .dropdown{position:static;width:100%;transform:none;opacity:1;visibility:visible;box-shadow:none;border:none;padding:0 0 6px 14px;display:none}
  .nav-item.show-dd .dropdown{display:block}
  .hamburger{display:grid}
}
@media(max-width:640px){
  .wrap{padding:0 20px}
  section{padding:60px 0}
  .products-grid,.tech-grid{grid-template-columns:1fr}
  .hero-visual{height:360px}
  .p-tagline{min-height:0}
  .foot-grid{grid-template-columns:1fr}
  .cta-inner{padding:46px 26px}
  .dl-info{flex-direction:column}
  .contact-card{padding:30px 24px}
}