/* ============================================================
   广东中科测控技术有限公司 官网 v3 — 「精准测量」设计系统
   深空黑蓝 × 电光青 · 工程图纸语言 · 电影感版式
   ============================================================ */
:root{
  --bg:#0a0e14;
  --bg-2:#0c1119;
  --panel:#101823;
  --panel-2:#141e2c;
  --line:rgba(150,183,215,.13);
  --line-2:rgba(150,183,215,.22);
  --text:#eaf1f8;
  --muted:#94a8bd;
  --dim:#5f7488;
  --cyan:#4cc3ff;
  --cyan-deep:#1f8fd0;
  --ink-inverse:#0a0e14;
  --sans:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Source Han Sans SC",system-ui,sans-serif;
  --mono:"SF Mono","Cascadia Code","JetBrains Mono",Consolas,"Courier New",monospace;
  --ease:cubic-bezier(.22,.9,.28,1);
  --container:1280px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);background:var(--bg);color:var(--text);
  line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%;display:block}
::selection{background:var(--cyan);color:var(--ink-inverse)}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--bg-2)}
::-webkit-scrollbar-thumb{background:#243447;border-radius:5px}
::-webkit-scrollbar-thumb:hover{background:var(--cyan-deep)}

.mono{font-family:var(--mono)}
.container{max-width:var(--container);margin:0 auto;padding:0 clamp(20px,4vw,48px)}

/* ---------- 刻度尺母题 ---------- */
.ruler{position:relative;height:14px}
.ruler::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(90deg,var(--line-2) 0 1px,transparent 1px 12px);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.ruler::after{
  content:"";position:absolute;inset:0;height:7px;top:7px;
  background:repeating-linear-gradient(90deg,var(--line) 0 1px,transparent 1px 60px);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}

/* ---------- 十字标 ---------- */
.cross{position:absolute;width:18px;height:18px;pointer-events:none;opacity:.5;z-index:3}
.cross::before,.cross::after{content:"";position:absolute;background:var(--cyan)}
.cross::before{left:50%;top:0;width:1px;height:100%;transform:translateX(-50%)}
.cross::after{top:50%;left:0;height:1px;width:100%;transform:translateY(-50%)}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background .4s,border-color .4s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{background:rgba(9,13,19,.82);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:14px}
.logo-chip{background:#fff;border-radius:8px;padding:5px 7px;display:flex}
.logo-chip img{height:34px;width:auto}
.logo-text{line-height:1.25}
.logo-text b{display:block;font-size:17px;letter-spacing:1px;font-weight:700;color:var(--text)}
.logo-text small{display:block;font-family:var(--mono);font-size:9.5px;color:var(--dim);letter-spacing:1.8px}
.nav-links{display:flex;gap:38px;align-items:center}
.nav-links a{font-size:14.5px;color:var(--muted);letter-spacing:1px;position:relative;padding:4px 0;transition:color .3s}
.nav-links a:hover,.nav-links a.on{color:var(--text)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;height:1.5px;width:0;background:var(--cyan);transition:width .35s var(--ease)}
.nav-links a:hover::after,.nav-links a.on::after{width:100%}
.nav-cta{
  font-family:var(--mono);font-size:13px;color:var(--cyan)!important;
  border:1px solid rgba(76,195,255,.4);padding:8px 18px;border-radius:3px;
  transition:background .3s,color .3s;letter-spacing:1px;
}
.nav-cta:hover{background:var(--cyan);color:var(--ink-inverse)!important}
.nav-cta::after{display:none}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--text);margin:5px 0;transition:.35s}
.nav.open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.open .nav-toggle span:nth-child(2){opacity:0}
.nav.open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center 62%;transform:scale(1.06);will-change:transform}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(10,14,20,.62) 0%,rgba(10,14,20,.25) 42%,rgba(10,14,20,.88) 82%,var(--bg) 100%),
    radial-gradient(88% 68% at 50% 100%,transparent 30%,rgba(10,14,20,.5) 100%);
}
.hero-grid{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    repeating-linear-gradient(0deg,rgba(150,183,215,.05) 0 1px,transparent 1px 90px),
    repeating-linear-gradient(90deg,rgba(150,183,215,.05) 0 1px,transparent 1px 90px);
  -webkit-mask-image:radial-gradient(70% 62% at 50% 46%,#000 30%,transparent 100%);
  mask-image:radial-gradient(70% 62% at 50% 46%,#000 30%,transparent 100%);
}
.hero-content{position:relative;z-index:2;padding:150px 0 0}
.hero-kicker{
  display:inline-flex;align-items:center;gap:12px;
  font-family:var(--mono);font-size:12.5px;letter-spacing:3.5px;color:var(--cyan);
  border:1px solid rgba(76,195,255,.35);padding:7px 16px;border-radius:2px;
  background:rgba(10,16,24,.55);backdrop-filter:blur(6px);
}
.hero-kicker::before{content:"";width:7px;height:7px;background:var(--cyan);border-radius:50%;box-shadow:0 0 10px var(--cyan);animation:blink 2.4s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.25}}
.hero h1{
  font-size:clamp(46px,8.2vw,104px);
  line-height:1.12;font-weight:800;letter-spacing:2px;
  margin:30px 0 26px;text-shadow:0 4px 40px rgba(0,0,0,.5);
}
.hero h1 .stroke{
  color:transparent;-webkit-text-stroke:1.5px rgba(234,241,248,.85);
  display:inline-block;
}
.hero h1 .dot{color:var(--cyan)}
.hero-sub{max-width:640px;color:#c3d3e2;font-size:clamp(15px,1.4vw,17.5px);margin-bottom:44px}
.hero-actions{display:flex;gap:18px;flex-wrap:wrap;margin-bottom:64px}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 34px;font-size:15px;letter-spacing:2px;border-radius:2px;
  transition:transform .35s var(--ease),box-shadow .35s,background .3s,color .3s;
  cursor:pointer;border:1px solid transparent;
}
.btn-primary{background:var(--cyan);color:var(--ink-inverse);font-weight:700;box-shadow:0 6px 30px rgba(76,195,255,.28)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(76,195,255,.42)}
.btn-ghost{border-color:rgba(234,241,248,.35);color:var(--text);background:rgba(10,14,20,.3);backdrop-filter:blur(4px)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-3px)}
.btn .arr{transition:transform .3s}
.btn:hover .arr{transform:translateX(5px)}

/* hero 底部数据条 */
.hero-data{
  position:relative;z-index:2;
  border-top:1px solid var(--line-2);
  background:rgba(9,13,19,.55);backdrop-filter:blur(10px);
}
.hero-data .row{display:grid;grid-template-columns:repeat(4,1fr)}
.hero-data .cell{
  padding:22px clamp(14px,2.5vw,36px);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:2px;
}
.hero-data .cell:last-child{border-right:0}
.hero-data .k{font-family:var(--mono);font-size:10.5px;letter-spacing:2.5px;color:var(--dim);text-transform:uppercase}
.hero-data .v{font-size:clamp(17px,2vw,23px);font-weight:700;color:var(--text)}
.hero-data .v em{font-style:normal;color:var(--cyan);font-family:var(--mono);font-weight:600;font-size:.72em;margin-left:6px}

/* ---------- 标准跑马灯 ---------- */
.ticker{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-2);overflow:hidden;position:relative}
.ticker-track{display:flex;width:max-content;animation:marq 46s linear infinite}
.ticker:hover .ticker-track{animation-play-state:paused}
.ticker-track span{
  font-family:var(--mono);font-size:13px;letter-spacing:2.5px;color:var(--dim);
  padding:16px 0;white-space:nowrap;
}
.ticker-track span i{font-style:normal;color:var(--cyan);margin:0 22px;opacity:.7}
@keyframes marq{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- 章节骨架 ---------- */
.section{padding:clamp(80px,10vw,150px) 0;position:relative}
.section.alt{background:var(--bg-2)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:clamp(44px,6vw,80px)}
.sec-kicker{
  font-family:var(--mono);font-size:12px;letter-spacing:3.5px;color:var(--cyan);
  display:flex;align-items:center;gap:14px;margin-bottom:18px;
}
.sec-kicker::before{content:"";width:34px;height:1px;background:var(--cyan)}
.sec-head h2{font-size:clamp(30px,4.6vw,56px);font-weight:800;letter-spacing:1px;line-height:1.25;color:var(--text)}
.sec-head .desc{max-width:380px;color:var(--muted);font-size:15px;padding-bottom:8px}

/* ---------- 关于 / 宣言 ---------- */
.statement{font-size:clamp(24px,3.4vw,42px);font-weight:700;line-height:1.6;letter-spacing:1px;max-width:1020px;color:var(--text)}
.statement .hl{color:var(--cyan)}
.statement .thin{color:var(--dim);font-weight:400}
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(36px,5vw,80px);align-items:start;margin-top:clamp(40px,5vw,72px)}
.about-grid .photo{position:relative}
.about-grid .photo img{border-radius:4px;filter:saturate(.92);width:100%}
.about-grid .photo::after{
  content:"";position:absolute;inset:0;border:1px solid var(--line-2);border-radius:4px;
  transform:translate(16px,16px);pointer-events:none;
}
.photo-tag{
  position:absolute;left:-12px;bottom:26px;background:var(--cyan);color:var(--ink-inverse);
  font-family:var(--mono);font-size:11.5px;letter-spacing:2px;padding:7px 14px;border-radius:2px;
  box-shadow:0 8px 24px rgba(0,0,0,.4);z-index:2;
}
.about-body p{color:var(--muted);font-size:15.5px;margin-bottom:20px}
.about-body p b{color:var(--text)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2);margin-top:clamp(56px,7vw,90px)}
.stats .st{padding:34px clamp(10px,2vw,30px);border-right:1px solid var(--line);position:relative}
.stats .st:last-child{border-right:0}
.stats .num{font-family:var(--mono);font-size:clamp(30px,3.6vw,46px);font-weight:700;color:var(--text);line-height:1.15}
.stats .num em{font-style:normal;color:var(--cyan);font-size:.55em;margin-left:2px}
.stats .lab{color:var(--dim);font-size:13px;letter-spacing:2px;margin-top:8px}
.stats .st::after{
  content:"";position:absolute;top:0;left:0;width:0;height:2px;background:var(--cyan);
  transition:width .6s var(--ease);
}
.stats .st:hover::after{width:100%}

/* ---------- 产品索引列表 ---------- */
.prod-list{border-top:1px solid var(--line-2)}
.prod-row{
  display:grid;grid-template-columns:110px 1fr auto 56px;gap:clamp(16px,3vw,44px);
  align-items:center;padding:clamp(26px,3.4vw,42px) clamp(8px,1.5vw,20px);
  border-bottom:1px solid var(--line-2);position:relative;cursor:pointer;
  transition:background .35s,padding-left .35s var(--ease);
}
.prod-row:hover{background:rgba(76,195,255,.05);padding-left:clamp(20px,3vw,40px)}
.prod-row .idx{
  font-family:var(--mono);font-size:clamp(24px,3vw,38px);font-weight:700;
  color:transparent;-webkit-text-stroke:1px var(--dim);transition:.35s;line-height:1;
}
.prod-row:hover .idx{color:var(--cyan);-webkit-text-stroke:0}
.prod-row .name{font-size:clamp(20px,2.6vw,32px);font-weight:700;letter-spacing:1px;transition:color .3s;color:var(--text)}
.prod-row:hover .name{color:var(--cyan)}
.prod-row .brief{color:var(--dim);font-size:14px;margin-top:6px;letter-spacing:.5px}
.prod-row .std{font-family:var(--mono);font-size:12.5px;color:var(--dim);letter-spacing:1.5px;text-align:right;line-height:2}
.prod-row .go{
  width:52px;height:52px;border:1px solid var(--line-2);border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:19px;color:var(--muted);
  transition:.35s var(--ease);
}
.prod-row:hover .go{background:var(--cyan);border-color:var(--cyan);color:var(--ink-inverse);transform:rotate(-45deg)}

/* 鼠标跟随预览图 */
#peek{
  position:fixed;z-index:90;width:330px;height:225px;border-radius:4px;overflow:hidden;
  pointer-events:none;opacity:0;transform:scale(.9);transition:opacity .28s,transform .28s var(--ease);
  box-shadow:0 24px 70px rgba(0,0,0,.55);border:1px solid var(--line-2);
}
#peek.show{opacity:1;transform:scale(1)}
#peek img{width:100%;height:100%;object-fit:cover}
#peek .peek-tag{
  position:absolute;left:0;bottom:0;right:0;
  font-family:var(--mono);font-size:10.5px;letter-spacing:2px;color:var(--cyan);
  background:linear-gradient(transparent,rgba(9,13,19,.9));padding:22px 12px 8px;
}
@media(pointer:coarse){#peek{display:none}}

/* ---------- 案例展示 ---------- */
.case-feature{
  display:grid;grid-template-columns:1.25fr .75fr;gap:0;
  border:1px solid var(--line-2);border-radius:6px;overflow:hidden;background:var(--panel);
}
.case-feature .im{position:relative;min-height:420px;overflow:hidden}
.case-feature .im img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.case-feature:hover .im img{transform:scale(1.05)}
.case-feature .im .badge{
  position:absolute;top:20px;left:20px;font-family:var(--mono);font-size:11.5px;letter-spacing:2.5px;
  background:rgba(9,13,19,.72);backdrop-filter:blur(6px);border:1px solid var(--line-2);
  color:var(--cyan);padding:7px 14px;border-radius:2px;z-index:2;
}
.case-feature .info{padding:clamp(28px,3.4vw,52px);display:flex;flex-direction:column;justify-content:center}
.case-feature .info h3{font-size:clamp(24px,2.6vw,34px);font-weight:800;letter-spacing:1px;margin:10px 0 16px;color:var(--text)}
.case-feature .info p{color:var(--muted);font-size:15px}
.case-feature .meta{
  margin-top:26px;padding-top:22px;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:12px;color:var(--dim);letter-spacing:1.5px;line-height:2.1;
}
.case-feature .meta b{color:var(--cyan);font-weight:400}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:56px}
.gallery .g{
  position:relative;border-radius:4px;overflow:hidden;cursor:zoom-in;
  aspect-ratio:4/3;border:1px solid var(--line);
}
.gallery .g img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease)}
.gallery .g:hover img{transform:scale(1.07)}
.gallery .g::after{
  content:"⤢";position:absolute;right:12px;bottom:8px;font-size:17px;color:#fff;
  opacity:0;transition:.3s;text-shadow:0 2px 8px rgba(0,0,0,.6);
}
.gallery .g:hover::after{opacity:.9}
.case-more{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:44px;flex-wrap:wrap}
.case-more .note{font-family:var(--mono);font-size:12.5px;color:var(--dim);letter-spacing:2px}

/* ---------- 视频区块 ---------- */
.video-wrap{position:relative;border-radius:6px;overflow:hidden;border:1px solid var(--line-2);margin-top:clamp(48px,6vw,80px)}
.video-wrap video{width:100%;display:block;aspect-ratio:16/9;object-fit:cover;background:#000}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
.steps::before{
  content:"";position:absolute;top:26px;left:6%;right:6%;height:1px;
  background:repeating-linear-gradient(90deg,var(--line-2) 0 8px,transparent 8px 16px);
}
.step{padding:0 clamp(10px,1.6vw,22px);text-align:center;position:relative}
.step .no{
  width:52px;height:52px;margin:0 auto 22px;border-radius:50%;position:relative;z-index:1;
  background:var(--bg);border:1px solid var(--line-2);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:15px;color:var(--muted);transition:.4s;
}
.section.alt .step .no{background:var(--bg-2)}
.step:hover .no{border-color:var(--cyan);color:var(--cyan);box-shadow:0 0 0 6px rgba(76,195,255,.1)}
.step h4{font-size:17.5px;font-weight:700;letter-spacing:1px;margin-bottom:8px;color:var(--text)}
.step p{font-size:13.5px;color:var(--dim);line-height:1.7}

/* ---------- 客户墙 ---------- */
.clients{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line-2);border-radius:6px;overflow:hidden;background:var(--bg)}
.section.alt .clients{background:var(--bg-2)}
.clients li{
  padding:clamp(20px,2.6vw,34px) 18px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;text-align:center;
  min-height:96px;transition:background .35s;position:relative;
}
.clients li:nth-child(4n){border-right:0}
.clients li:nth-last-child(-n+4){border-bottom:0}
.clients li span{font-size:14px;color:var(--muted);letter-spacing:.5px;transition:.35s;line-height:1.5}
.clients li:hover{background:rgba(76,195,255,.06)}
.clients li:hover span{color:var(--text)}
.clients li:hover::before{
  content:"";position:absolute;inset:0;border:1px solid rgba(76,195,255,.4);pointer-events:none;
}
.clients-note{margin-top:20px;font-family:var(--mono);font-size:11.5px;color:var(--dim);letter-spacing:2px;text-align:right}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden}
.cta::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(58% 90% at 50% 110%,rgba(31,143,208,.24),transparent 70%);
}
.cta-inner{position:relative;text-align:center;padding:clamp(80px,10vw,140px) 0}
.cta .k{font-family:var(--mono);font-size:12.5px;letter-spacing:4px;color:var(--cyan);margin-bottom:26px}
.cta h2{font-size:clamp(32px,5vw,60px);font-weight:800;letter-spacing:2px;line-height:1.3;margin-bottom:38px;color:var(--text)}
.cta .tel{
  display:inline-block;font-family:var(--mono);font-size:clamp(30px,5vw,58px);font-weight:700;
  color:var(--cyan);letter-spacing:2px;transition:.35s;text-shadow:0 0 50px rgba(76,195,255,.35);
}
.cta .tel:hover{transform:scale(1.04)}
.cta .sub{margin-top:18px;color:var(--muted);font-size:15px}
.cta .sub .mono{color:var(--dim)}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--line-2);background:var(--bg-2);position:relative;overflow:hidden}
.foot-grid{display:grid;grid-template-columns:1.3fr .7fr .7fr 1fr;gap:clamp(28px,4vw,64px);padding:clamp(52px,7vw,84px) 0 44px}
.foot-brand .nm{font-size:19px;font-weight:700;letter-spacing:1px;margin-bottom:16px;color:var(--text)}
.foot-brand p{color:var(--dim);font-size:13.5px;line-height:1.9;max-width:340px}
.footer h5{font-family:var(--mono);font-size:11.5px;letter-spacing:3px;color:var(--dim);margin-bottom:20px;text-transform:uppercase}
.footer h5::after{content:"";display:block;width:26px;height:1px;background:var(--cyan);margin-top:10px}
.foot-links li{margin-bottom:12px}
.foot-links a{color:var(--muted);font-size:14px;transition:.3s}
.foot-links a:hover{color:var(--cyan);padding-left:6px}
.foot-contact li{color:var(--muted);font-size:14px;margin-bottom:13px;display:flex;gap:12px;line-height:1.6}
.foot-contact b{
  font-family:var(--mono);font-weight:400;font-size:11px;color:var(--dim);letter-spacing:2px;
  min-width:44px;padding-top:3px;flex-shrink:0;
}
.foot-contact a:hover{color:var(--cyan)}
.foot-word{
  font-family:var(--mono);font-weight:700;text-align:center;line-height:.82;user-select:none;
  font-size:clamp(88px,17vw,240px);letter-spacing:6px;
  color:transparent;-webkit-text-stroke:1px rgba(150,183,215,.13);
  padding:20px 0 0;white-space:nowrap;overflow:hidden;
}
.copy{
  border-top:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;
  gap:14px;flex-wrap:wrap;font-size:12.5px;color:var(--dim);letter-spacing:.5px;
}
.copy a{color:var(--dim);transition:.3s}
.copy a:hover{color:var(--cyan)}

/* ---------- 灯箱 ---------- */
.lightbox{
  position:fixed;inset:0;z-index:200;background:rgba(6,9,14,.93);backdrop-filter:blur(10px);
  display:flex;align-items:center;justify-content:center;flex-direction:column;gap:18px;
  opacity:0;pointer-events:none;transition:opacity .35s;
}
.lightbox.on{opacity:1;pointer-events:auto}
.lightbox img{max-width:88vw;max-height:78vh;border-radius:4px;border:1px solid var(--line-2)}
.lightbox .cap{font-family:var(--mono);font-size:12px;color:var(--muted);letter-spacing:2.5px}
.lightbox .x{
  position:absolute;top:26px;right:34px;font-size:30px;color:var(--muted);cursor:pointer;
  width:52px;height:52px;border:1px solid var(--line-2);border-radius:50%;
  display:flex;align-items:center;justify-content:center;transition:.3s;
}
.lightbox .x:hover{color:var(--ink-inverse);background:var(--cyan);border-color:var(--cyan)}
.lightbox .navb{
  position:absolute;top:50%;transform:translateY(-50%);font-size:26px;color:var(--muted);cursor:pointer;
  width:58px;height:58px;border:1px solid var(--line-2);border-radius:50%;
  display:flex;align-items:center;justify-content:center;transition:.3s;user-select:none;
}
.lightbox .navb:hover{color:var(--ink-inverse);background:var(--cyan);border-color:var(--cyan)}
.lightbox .prev{left:34px}.lightbox .next{right:34px}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.1s}
.reveal[data-d="2"]{transition-delay:.2s}
.reveal[data-d="3"]{transition-delay:.3s}
.reveal[data-d="4"]{transition-delay:.42s}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .ticker-track{animation:none}
}

/* ---------- 内页头部 ---------- */
.page-hero{padding:clamp(140px,16vw,200px) 0 clamp(44px,6vw,72px);position:relative;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(60% 100% at 85% 0%,rgba(31,143,208,.13),transparent 70%);
}
.page-hero .crumbs{
  font-family:var(--mono);font-size:11.5px;letter-spacing:2.5px;color:var(--dim);margin-bottom:20px;position:relative;
}
.page-hero .crumbs i{font-style:normal;color:var(--cyan);margin:0 10px}
.page-hero h1{font-size:clamp(34px,5.6vw,64px);font-weight:800;letter-spacing:2px;line-height:1.25;position:relative;color:var(--text)}
.page-hero .lead{color:var(--muted);max-width:620px;margin-top:20px;font-size:15.5px;position:relative}
.page-hero .bigidx{
  position:absolute;right:-1%;top:38%;font-family:var(--mono);font-weight:700;
  font-size:clamp(120px,22vw,300px);line-height:1;color:transparent;
  -webkit-text-stroke:1px rgba(150,183,215,.1);pointer-events:none;user-select:none;
}

/* ---------- 产品详情块（产品页）---------- */
.spec{
  padding:clamp(48px,7vw,90px) 0;border-top:1px solid var(--line-2);
}
.spec-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:clamp(32px,5vw,72px);align-items:center}
.spec .im{position:relative}
.spec .im img{border-radius:5px;width:100%;aspect-ratio:4/3.1;object-fit:cover;border:1px solid var(--line)}
.spec .im .no{
  position:absolute;top:-24px;left:-10px;font-family:var(--mono);font-size:clamp(54px,7vw,86px);font-weight:700;
  color:transparent;-webkit-text-stroke:1px var(--cyan);opacity:.8;line-height:1;z-index:2;
}
.spec h3{font-size:clamp(24px,3vw,36px);font-weight:800;letter-spacing:1px;margin-bottom:8px;color:var(--text)}
.spec .en{font-family:var(--mono);font-size:11.5px;color:var(--dim);letter-spacing:2.5px;margin-bottom:22px;text-transform:uppercase}
.spec p{color:var(--muted);font-size:15px;margin-bottom:24px}
.spec table{width:100%;border-collapse:collapse;font-size:13.5px}
.spec th,.spec td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line)}
.spec th{font-family:var(--mono);font-weight:400;font-size:11px;color:var(--dim);letter-spacing:2px;width:130px;white-space:nowrap}
.spec td{color:var(--muted)}
.spec td b{color:var(--cyan);font-weight:400;font-family:var(--mono);font-size:12px}

/* ---------- 动态列表 ---------- */
.news-list{border-top:1px solid var(--line-2)}
.news-item{
  display:grid;grid-template-columns:150px 1fr auto;gap:clamp(18px,3vw,48px);align-items:center;
  padding:clamp(28px,3.4vw,44px) 6px;border-bottom:1px solid var(--line-2);
  transition:background .35s,padding-left .35s var(--ease);
}
.news-item:hover{background:rgba(76,195,255,.05);padding-left:22px}
.news-item .dt{font-family:var(--mono);color:var(--dim);font-size:13px;letter-spacing:1px;line-height:1.9}
.news-item .dt b{display:block;font-size:26px;color:var(--text);font-weight:700}
.news-item h3{font-size:clamp(18px,2vw,23px);font-weight:700;letter-spacing:.5px;margin-bottom:8px;transition:.3s;color:var(--text)}
.news-item:hover h3{color:var(--cyan)}
.news-item p{color:var(--dim);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item .tag{
  font-family:var(--mono);font-size:10.5px;letter-spacing:2px;color:var(--cyan);
  border:1px solid rgba(76,195,255,.35);padding:5px 12px;border-radius:2px;white-space:nowrap;
}

/* ---------- 面包屑条 ---------- */
.crumb-bar{margin-top:72px;border-bottom:1px solid var(--line);background:var(--bg-2)}
.crumb-bar .container{display:flex;align-items:center;gap:10px;padding-top:14px;padding-bottom:14px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:2px;color:var(--dim);flex-wrap:wrap}
.crumb-bar a{color:var(--dim);transition:.3s}
.crumb-bar a:hover{color:var(--cyan)}
.crumb-bar i{font-style:normal;color:var(--cyan);opacity:.6}
.crumb-bar .cur{color:var(--muted)}

/* ---------- 数据指标卡 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line-2);border-radius:6px;overflow:hidden;background:var(--panel)}
.metrics .m{padding:clamp(20px,2.6vw,32px) clamp(14px,2vw,26px);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.metrics .m:nth-child(4n){border-right:0}
.metrics .k{font-family:var(--mono);font-size:10.5px;letter-spacing:2.5px;color:var(--dim);text-transform:uppercase;margin-bottom:8px}
.metrics .v{font-size:clamp(19px,2.2vw,26px);font-weight:700;color:var(--text);line-height:1.35}
.metrics .v em{font-style:normal;font-family:var(--mono);color:var(--cyan);font-size:.7em;margin-left:4px}
.metrics .note{color:var(--dim);font-size:12.5px;margin-top:6px;line-height:1.7}

/* ---------- 长文排版 ---------- */
.prose{max-width:920px}
.prose h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:.5px;color:var(--text);margin:0 0 18px;line-height:1.45}
.prose h2 .idx{font-family:var(--mono);color:var(--cyan);font-size:.62em;margin-right:12px;letter-spacing:2px}
.prose h3{font-size:clamp(17px,1.9vw,21px);font-weight:700;color:var(--text);margin:30px 0 12px}
.prose p{color:var(--muted);font-size:15.5px;margin-bottom:16px}
.prose p b,.prose li b{color:var(--text)}
.prose ul,.prose ol{margin:0 0 18px;padding-left:0}
.prose ul li{color:var(--muted);font-size:15.5px;padding-left:24px;position:relative;margin-bottom:10px}
.prose ul li::before{content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border:1px solid var(--cyan);transform:rotate(45deg)}
.prose ol{counter-reset:ol}
.prose ol li{color:var(--muted);font-size:15.5px;padding-left:36px;position:relative;margin-bottom:10px;counter-increment:ol}
.prose ol li::before{content:counter(ol,decimal-leading-zero);position:absolute;left:0;top:0;font-family:var(--mono);font-size:12px;color:var(--cyan)}
.prose .callout{border-left:2px solid var(--cyan);background:rgba(76,195,255,.05);padding:18px 22px;border-radius:0 4px 4px 0;margin:0 0 20px}
.prose .callout p:last-child{margin-bottom:0}
.prose table{width:100%;border-collapse:collapse;font-size:14px;margin:0 0 22px;border:1px solid var(--line-2);border-radius:6px;overflow:hidden}
.prose table th,.prose table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.prose table tr:last-child th,.prose table tr:last-child td{border-bottom:0}
.prose table th{font-family:var(--mono);font-size:11.5px;color:var(--cyan);letter-spacing:1.5px;font-weight:400;white-space:nowrap}
.prose table tr:first-child th{color:var(--dim);letter-spacing:2px;font-size:11px}
.prose table td{color:var(--muted);font-size:14px}

/* ---------- 标准卡片网格 ---------- */
.std-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px}
.std-card{border:1px solid var(--line-2);border-radius:6px;padding:20px 22px;background:var(--panel);transition:.35s}
.std-card:hover{border-color:rgba(76,195,255,.45);background:var(--panel-2)}
.std-card .code{font-family:var(--mono);font-size:14px;color:var(--cyan);letter-spacing:1px;margin-bottom:8px}
.std-card .nm{font-size:14.5px;color:var(--text);font-weight:600;margin-bottom:6px}
.std-card .ds{font-size:13px;color:var(--dim);line-height:1.75}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line-2)}
.faq-item{border-bottom:1px solid var(--line-2);padding:clamp(22px,2.8vw,32px) 0}
.faq-q{display:flex;gap:16px;align-items:flex-start}
.faq-q .qn{font-family:var(--mono);font-size:12.5px;color:var(--cyan);letter-spacing:1.5px;padding-top:4px;flex-shrink:0}
.faq-q h3{font-size:clamp(16.5px,1.9vw,20px);font-weight:700;color:var(--text);letter-spacing:.5px;line-height:1.6;margin:0}
.faq-a{color:var(--muted);font-size:15px;padding:14px 0 0 44px}
.faq-a p{margin-bottom:12px}
.faq-a p:last-child{margin-bottom:0}
.faq-a ul{margin:8px 0 12px}
.faq-a ul li{color:var(--muted);font-size:15px;padding-left:22px;position:relative;margin-bottom:8px}
.faq-a ul li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border:1px solid var(--cyan);transform:rotate(45deg)}

/* ---------- 相关页面 ---------- */
.rel{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.rel a{border:1px solid var(--line-2);border-radius:6px;padding:24px;background:var(--panel);transition:.35s;display:block}
.rel a:hover{border-color:rgba(76,195,255,.45);transform:translateY(-3px);background:var(--panel-2)}
.rel .k{font-family:var(--mono);font-size:10.5px;letter-spacing:2.5px;color:var(--cyan);margin-bottom:10px}
.rel .t{font-size:17px;font-weight:700;color:var(--text);margin-bottom:6px}
.rel .d{font-size:13px;color:var(--dim);line-height:1.7}

/* ---------- 文章元信息 ---------- */
.art-meta{display:flex;gap:22px;flex-wrap:wrap;font-family:var(--mono);font-size:11.5px;letter-spacing:2px;color:var(--dim);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;margin:28px 0 36px}
.art-meta b{color:var(--cyan);font-weight:400}

/* ---------- 响应式 ---------- */
/* 移动端/微信内核不支持 text-stroke 镂空渲染，全部降级为实色 */
@media(max-width:1020px){
  .hero h1 .stroke{color:var(--cyan);-webkit-text-stroke:0}
  .prod-row .idx{color:rgba(139,163,187,.5);-webkit-text-stroke:0}
  .prod-row:hover .idx{color:var(--cyan)}
  .foot-word{color:rgba(150,183,215,.13);-webkit-text-stroke:0}
  .page-hero .bigidx{color:rgba(150,183,215,.1);-webkit-text-stroke:0}
  .spec .im .no{color:var(--cyan);opacity:.45;-webkit-text-stroke:0}
}
@media(max-width:1020px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav.open .nav-links{
    display:flex;position:fixed;inset:72px 0 0;background:rgba(9,13,19,.97);backdrop-filter:blur(16px);
    flex-direction:column;align-items:center;justify-content:center;gap:34px;z-index:99;
  }
  .about-grid,.case-feature,.spec-grid{grid-template-columns:1fr}
  .case-feature .im{min-height:300px}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:34px 12px}
  .steps::before{display:none}
  .clients{grid-template-columns:repeat(2,1fr)}
  .clients li:nth-child(4n){border-right:1px solid var(--line)}
  .clients li:nth-child(2n){border-right:0}
  .clients li:nth-last-child(-n+4){border-bottom:1px solid var(--line)}
  .clients li:nth-last-child(-n+2){border-bottom:0}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stats .st:nth-child(2n){border-right:0}
  .stats .st{border-bottom:1px solid var(--line)}
  .stats .st:nth-last-child(-n+2){border-bottom:0}
  .foot-grid{grid-template-columns:1fr 1fr}
  .prod-row{grid-template-columns:64px 1fr 44px;row-gap:6px}
  .prod-row .std{display:none}
  .prod-row .go{width:44px;height:44px;font-size:16px}
  .news-item{grid-template-columns:1fr;gap:12px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metrics .m:nth-child(2n){border-right:0}
  .std-cards,.rel{grid-template-columns:1fr}
  .faq-a{padding-left:0}
  .crumb-bar{margin-top:64px}
  .hero-data .row{grid-template-columns:repeat(2,1fr)}
  .hero-data .cell:nth-child(2n){border-right:0}
  .hero-data .cell{border-bottom:1px solid var(--line)}
  .hero-data .cell:nth-last-child(-n+2){border-bottom:0}
}
@media(max-width:640px){
  .sec-head{flex-direction:column;align-items:flex-start;gap:18px}
  .foot-grid{grid-template-columns:1fr}
  .photo-tag{left:6px}
  .spec .im .no{top:-16px}
}