/* 联合力拓官网样式 —— 亮色科技风，无外部依赖 */

@font-face{font-family:"Barlow";font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/barlow-500.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+2122,U+2212}
@font-face{font-family:"Barlow";font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/barlow-600.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+2122,U+2212}
@font-face{font-family:"Barlow Condensed";font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/barlow-condensed-600.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+2122,U+2212}

:root{
  --paper:#F4F7FB;
  --surface:#FFFFFF;
  --tint:#EAF0F7;
  --ink:#0C1A2B;
  --ink-2:#34465B;
  --muted:#5D6D80;
  --line:#DCE4EE;
  --line-2:#C5D1DF;
  --signal:#1B4DFF;
  --signal-soft:rgba(27,77,255,.08);
  --cyan:#00A8C6;
  --led:#10B37F;
  --amber:#E89A0C;
  --grid:rgba(12,26,43,.05);

  --f-cn:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei UI","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --f-tech:"Barlow",var(--f-cn);
  --f-num:"Barlow Condensed","Barlow",var(--f-cn);

  --header-h:68px;
  --subnav-h:0px;
  --gutter:clamp(16px,4vw,40px);
  --maxw:1200px;
  --r-s:8px;
  --r-m:14px;
  --r-l:20px;
  --ease:cubic-bezier(.2,.8,.2,1);
  interpolate-size:allow-keywords;
}

/* ---------- 基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + var(--subnav-h) + 16px)}
body{margin:0;font-family:var(--f-cn);font-size:16px;line-height:1.75;color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-autospace:normal;overflow-x:clip}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;color:var(--ink);text-wrap:balance}
p{margin:0}
p,li,dd{text-wrap:pretty}
a{color:var(--signal)}
img,svg{display:block;max-width:100%}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:4px}
::selection{background:rgba(27,77,255,.16)}
.container{width:100%;max-width:calc(var(--maxw) + var(--gutter)*2);margin-inline:auto;padding-inline:var(--gutter)}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;left:16px;top:-60px;z-index:200;padding:10px 16px;border-radius:var(--r-s);background:var(--ink);color:#fff;text-decoration:none;transition:top .2s}
.skip-link:focus{top:12px}
.ic{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.num{font-family:var(--f-num);font-weight:600;letter-spacing:.01em}

/* ---------- 页面转场 ---------- */
/* 离开：深色遮罩自下而上扫过；进入：遮罩继续向上撤离。前沿有一道青色扫描光。 */
.page-veil{position:fixed;inset:0;z-index:150;pointer-events:none;display:grid;place-items:center;background-color:var(--ink);background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:48px 48px;clip-path:inset(100% 0 0 0)}
.page-veil::after{content:"";position:absolute;left:0;right:0;top:100%;height:2px;background:var(--cyan);box-shadow:0 0 24px 4px rgba(0,168,198,.7);opacity:0}
.veil-core{display:grid;justify-items:center;gap:18px}
.veil-mark{width:52px;height:52px;animation:veil-pulse 1.2s ease-in-out infinite}
.veil-bar{position:relative;width:120px;height:2px;border-radius:2px;background:rgba(255,255,255,.12);overflow:hidden}
.veil-bar i{position:absolute;inset:0 auto 0 0;width:40%;background:linear-gradient(90deg,transparent,var(--cyan),transparent);animation:veil-load .9s linear infinite}
.is-leaving .page-veil{animation:veil-in .42s cubic-bezier(.7,0,.3,1) forwards}
.is-leaving .page-veil::after{animation:veil-edge .42s cubic-bezier(.7,0,.3,1) forwards}
.is-entering .page-veil{clip-path:inset(0);animation:veil-out .62s .12s cubic-bezier(.7,0,.3,1) forwards}
.is-entering .page-veil::after{animation:veil-edge .62s .12s cubic-bezier(.7,0,.3,1) forwards}
.is-entering .veil-core{animation:veil-fade .25s forwards}
.is-entering .wipe,.is-entering .wipe::after{animation-delay:.6s}
@keyframes veil-in{from{clip-path:inset(100% 0 0 0)}to{clip-path:inset(0)}}
@keyframes veil-out{from{clip-path:inset(0)}to{clip-path:inset(0 0 100% 0)}}
@keyframes veil-edge{0%{top:100%;opacity:1}90%{opacity:1}100%{top:0;opacity:0}}
@keyframes veil-fade{to{opacity:0;transform:translateY(-12px)}}
@keyframes veil-pulse{50%{transform:scale(.9);opacity:.7}}
@keyframes veil-load{from{transform:translateX(-100%)}to{transform:translateX(250%)}}

/* ---------- 进度条 ---------- */
.progress{position:fixed;left:0;right:0;top:0;z-index:60;height:2px;pointer-events:none}
.progress span{display:block;height:100%;background:linear-gradient(90deg,var(--signal),var(--cyan));transform:scaleX(0);transform-origin:left}

/* ---------- 顶部导航 ---------- */
.site-header{position:fixed;inset:0 0 auto;z-index:50;height:var(--header-h);transition:background-color .3s,box-shadow .3s}
.site-header.is-scrolled,.m-open .site-header{background:rgba(244,247,251,.84);-webkit-backdrop-filter:saturate(1.4) blur(14px);backdrop-filter:saturate(1.4) blur(14px);box-shadow:0 1px 0 var(--line)}
.hdr{height:100%;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;flex:none}
.brand-mark{width:32px;height:32px}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-cn{font-weight:700;font-size:1.0625rem;letter-spacing:.08em}
.brand-en{font-family:var(--f-tech);font-weight:600;font-size:.6875rem;letter-spacing:.2em;color:var(--muted);margin-top:2px}
.nav{margin-left:auto}
.nav ul{display:flex;gap:2px;list-style:none;padding:0}
.nav a{position:relative;display:block;padding:8px 14px;border-radius:var(--r-s);color:var(--ink-2);text-decoration:none;font-size:.9375rem;font-weight:500;transition:color .2s,background-color .2s}
.nav a:hover{color:var(--ink);background:rgba(12,26,43,.05)}
.nav a[aria-current="page"]{color:var(--ink)}
.nav a[aria-current="page"]::after{content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--signal),var(--cyan))}
.hdr-actions{display:flex;align-items:center;gap:14px}
.hdr-mail{display:none;align-items:center;gap:8px;font-family:var(--f-tech);font-weight:600;font-size:.875rem;color:var(--ink);text-decoration:none;letter-spacing:.02em}
.hdr-mail .ic{width:16px;height:16px;color:var(--signal)}
.hdr-icon,.menu-btn{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-2);background:rgba(255,255,255,.75);place-items:center;color:var(--ink);cursor:pointer;padding:0}
.hdr-icon .ic{width:19px;height:19px}
.menu-btn{position:relative}
.menu-btn span{position:absolute;left:13px;right:13px;top:50%;height:1.6px;margin-top:-.8px;border-radius:2px;background:var(--ink);transition:transform .3s var(--ease)}
.menu-btn span:first-child{transform:translateY(-4px)}
.menu-btn span:last-child{transform:translateY(4px)}
.m-open .menu-btn span:first-child{transform:rotate(45deg)}
.m-open .menu-btn span:last-child{transform:rotate(-45deg)}
@media (min-width:1200px){.hdr-mail{display:inline-flex}}
@media (max-width:1023.98px){
  .nav,.hdr-actions .hdr-cta{display:none}
  .hdr-actions{margin-left:auto;gap:10px}
  .hdr-icon,.menu-btn{display:grid}
}

.m-panel{position:fixed;inset:var(--header-h) 0 0;z-index:49;overflow-y:auto;overscroll-behavior:contain;background:var(--paper);padding:8px var(--gutter) calc(32px + env(safe-area-inset-bottom));opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .3s var(--ease),transform .3s var(--ease),visibility 0s .3s}
.m-open .m-panel{opacity:1;visibility:visible;transform:none;transition:opacity .3s var(--ease),transform .3s var(--ease)}
.m-open,.m-open body{overflow:hidden}
.m-nav ul{list-style:none;padding:0}
.m-nav a{display:flex;align-items:center;justify-content:space-between;padding:18px 2px;border-bottom:1px solid var(--line);font-size:1.25rem;font-weight:600;color:var(--ink);text-decoration:none}
.m-nav a[aria-current="page"]{color:var(--signal)}
.m-nav .ic{color:var(--muted)}
.m-contact{display:grid;gap:10px;margin-top:28px}
.m-line{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--r-m);background:var(--surface);color:var(--ink);text-decoration:none;font-size:.9375rem}
.m-line span{color:var(--muted)}
.m-line b{font-family:var(--f-tech);font-weight:600;letter-spacing:.02em}
@media (min-width:1024px){.m-panel{display:none}}

/* ---------- 按钮 ---------- */
.btn{--h:48px;display:inline-flex;align-items:center;justify-content:center;gap:10px;height:var(--h);padding:0 22px;border-radius:999px;border:1px solid transparent;font-family:inherit;font-size:.9375rem;font-weight:600;text-decoration:none;white-space:nowrap;cursor:pointer;transition:transform .25s var(--ease),background-color .25s,border-color .25s,box-shadow .25s,color .25s}
.btn .ic{width:18px;height:18px}
.btn--primary{background:var(--ink);color:#fff;box-shadow:0 12px 24px -14px rgba(12,26,43,.7)}
.btn--primary:hover{background:var(--signal);box-shadow:0 14px 28px -12px rgba(27,77,255,.6);transform:translateY(-1px)}
.btn--ghost{background:rgba(255,255,255,.75);border-color:var(--line-2);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink);transform:translateY(-1px)}
.btn--sm{--h:38px;padding:0 16px;font-size:.875rem}
.btn .tel-num{font-family:var(--f-tech);letter-spacing:.02em}

/* ---------- 状态灯 ---------- */
.led{display:inline-block;flex:none;width:8px;height:8px;border-radius:50%;background:#C3CEDB;box-shadow:inset 0 0 0 1px rgba(12,26,43,.08);transition:background-color .4s,box-shadow .4s}
.led.is-on{background:var(--led);box-shadow:0 0 0 3px rgba(16,179,127,.16),0 0 10px rgba(16,179,127,.55)}
.led.pulse{animation:led-pulse 2.4s ease-in-out infinite}
@keyframes led-pulse{50%{box-shadow:0 0 0 6px rgba(16,179,127,0),0 0 14px rgba(16,179,127,.85)}}
@keyframes blink{50%{opacity:.25}}

/* ---------- 标题扫描显现 ---------- */
.wipe{position:relative;width:fit-content;max-width:100%;animation:wipe 1.1s .2s var(--ease) both}
.wipe::after{content:"";position:absolute;top:-6%;bottom:-6%;left:0;width:3px;background:var(--cyan);box-shadow:0 0 18px 2px rgba(0,168,198,.55);pointer-events:none;animation:scan 1.1s .2s var(--ease) both}
@keyframes wipe{from{clip-path:inset(-12% 100% -12% 0)}to{clip-path:inset(-12% -2% -12% 0)}}
@keyframes scan{0%{left:0;opacity:1}85%{opacity:1}100%{left:calc(100% - 3px);opacity:0}}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@keyframes fade-in{to{opacity:1}}

.h-wipe{position:relative;width:fit-content;max-width:100%}
.h-wipe::after{content:"";position:absolute;top:-6%;bottom:-6%;left:0;width:2px;background:var(--cyan);box-shadow:0 0 14px 1px rgba(0,168,198,.55);opacity:0;pointer-events:none}

/* ---------- 滚动显现 ---------- */
.js [data-reveal]{transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:calc(var(--i,0)*80ms)}
.js [data-reveal]:not(.is-in){opacity:0;transform:translateY(20px)}
.js [data-reveal]:not(.is-in) .h-wipe{clip-path:inset(-12% 100% -12% 0)}
.js [data-reveal].is-in .h-wipe{clip-path:inset(-12% -2% -12% 0);transition:clip-path 1s var(--ease)}
.js [data-reveal].is-in .h-wipe::after{animation:scan 1s var(--ease) both}

/* ---------- 通用区块 ---------- */
.section{padding-block:clamp(72px,9vw,128px)}
.section--white{background:var(--surface)}
.section--line{border-top:1px solid var(--line)}
.sec-head{display:grid;gap:16px 56px;margin-bottom:clamp(36px,5vw,60px)}
.sec-head h2{font-size:clamp(1.75rem,1.15rem + 2.3vw,2.75rem);letter-spacing:-.01em}
.sec-head p{max-width:40em;color:var(--ink-2);font-size:1.0625rem}
.sec-head--stack{display:block;margin-bottom:20px}
@media (min-width:900px){.sec-head{grid-template-columns:minmax(0,5fr) minmax(0,6fr);align-items:end}}
.js .sec-head[data-reveal]:not(.is-in){opacity:1;transform:none}
.js .sec-head[data-reveal] p{transition:opacity .8s .25s var(--ease),transform .8s .25s var(--ease)}
.js .sec-head[data-reveal]:not(.is-in) p{opacity:0;transform:translateY(12px)}

.chips{display:flex;flex-wrap:wrap;gap:6px;list-style:none;padding:0}
.chip,.chips li{font-family:var(--f-tech);font-size:.8125rem;font-weight:500;line-height:1.5;padding:4px 10px;border-radius:6px;background:var(--tint);border:1px solid var(--line);color:var(--ink-2)}
.ic-box{display:grid;place-items:center;flex:none;width:44px;height:44px;border-radius:12px;background:var(--signal-soft);color:var(--signal)}
.ic-box .ic{width:22px;height:22px}
[data-glow]{position:relative;overflow:hidden}
[data-glow]::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;background:radial-gradient(260px circle at var(--mx,50%) var(--my,50%),rgba(27,77,255,.09),transparent 70%);opacity:0;transition:opacity .35s}
[data-glow]:hover::before{opacity:1}
[data-glow]>*{position:relative;z-index:1}

/* ---------- 首页首屏 ---------- */
.hero{position:relative;isolation:isolate;overflow:hidden;min-height:max(680px,100svh);display:flex;flex-direction:column;padding-top:calc(var(--header-h) + clamp(40px,10vh,128px));background:radial-gradient(110% 80% at 74% 42%,#fff 0%,var(--paper) 62%)}
.hero::before{content:"";position:absolute;inset:0;z-index:-3;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:radial-gradient(85% 70% at 70% 42%,#000 0%,transparent 78%);mask-image:radial-gradient(85% 70% at 70% 42%,#000 0%,transparent 78%)}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(90deg,var(--paper) 0%,rgba(244,247,251,.82) 28%,rgba(244,247,251,0) 56%)}
.hero-canvas{position:absolute;inset:0;z-index:-2;width:100%;height:100%;opacity:0;animation:fade-in 1.6s .1s var(--ease) forwards}
.hero-copy{max-width:720px}
.hero-status{display:inline-flex;align-items:center;gap:10px;padding:6px 14px 6px 12px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.75);font-size:.875rem;color:var(--ink-2);animation:rise .8s .1s var(--ease) both}
.hero-title{margin-top:24px;font-size:clamp(2.375rem,1rem + 5.6vw,5.25rem);line-height:1.08;letter-spacing:-.02em}
@media (min-width:600px){.hero-title{white-space:nowrap}}
.hero-lead{margin-top:24px;max-width:34em;font-size:clamp(1.0625rem,.95rem + .45vw,1.25rem);line-height:1.85;color:var(--ink-2);animation:rise .9s .7s var(--ease) both}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;animation:rise .9s .85s var(--ease) both}
.hero-stage{flex:1 1 auto;min-height:40px}
.hero-foot{padding-bottom:28px}
.readout{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin:0;background:rgba(255,255,255,.78);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden}
.ro{display:flex;flex-direction:column-reverse;justify-content:flex-end;padding:20px 24px 18px;animation:rise .8s 1s var(--ease) both}
.ro:nth-child(2){animation-delay:1.1s}
.ro:nth-child(3){animation-delay:1.2s}
.ro:nth-child(4){animation-delay:1.3s}
.ro+.ro{border-left:1px solid var(--line)}
.ro dt{display:flex;align-items:center;gap:8px;font-size:.8125rem;color:var(--muted)}
.ro dd{margin:0 0 8px;font-family:var(--f-num);font-weight:600;font-size:clamp(2rem,1.3rem + 2.1vw,3.25rem);line-height:1;color:var(--ink);font-variant-numeric:tabular-nums}
.ro dd small{margin-left:6px;font-family:var(--f-cn);font-size:.34em;font-weight:500;color:var(--muted)}
.ro .led{animation:blink .18s 3 steps(2) both;animation-delay:inherit}

@media (max-width:899.98px){
  .hero{padding-top:calc(var(--header-h) + 36px)}
  .hero::after{background:linear-gradient(180deg,var(--paper) 0%,rgba(244,247,251,.85) 32%,rgba(244,247,251,0) 52%)}
  .hero::before{-webkit-mask-image:radial-gradient(90% 60% at 50% 70%,#000,transparent 80%);mask-image:radial-gradient(90% 60% at 50% 70%,#000,transparent 80%)}
  .hero-stage{min-height:300px}
  .readout{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ro:nth-child(3){border-left:0}
  .ro:nth-child(n+3){border-top:1px solid var(--line)}
  .ro{padding:16px 18px 14px}
}
@media (max-width:420px){.hero-actions .btn{width:100%}}

/* ---------- 机柜：服务列表 ---------- */
.rack{position:relative;padding:14px 30px;background:var(--tint);border:1px solid var(--line);border-radius:var(--r-l)}
.rack::before,.rack::after{content:"";position:absolute;top:18px;bottom:18px;width:10px;background:radial-gradient(circle,var(--line-2) 0 1.8px,transparent 2.3px) 50% 0/10px 16px repeat-y}
.rack::before{left:10px}
.rack::after{right:10px}
.rack-unit{display:grid;grid-template-columns:auto minmax(0,15rem) minmax(0,1fr) auto;align-items:center;gap:20px 28px;padding:24px 26px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);color:inherit;text-decoration:none;transition:transform .5s var(--ease),box-shadow .5s var(--ease),border-color .3s,opacity .8s var(--ease)}
.rack-unit+.rack-unit{margin-top:10px}
.ru-face{display:flex;align-items:center;gap:12px}
.vent{width:30px;height:28px;border-radius:3px;background:repeating-linear-gradient(90deg,var(--line-2) 0 2px,transparent 2px 6px);opacity:.75}
.ru-title{display:flex;align-items:center;gap:14px}
.ru-title h3{font-size:1.25rem}
.ru-title .ic{width:24px;height:24px;color:var(--signal)}
.ru-desc{color:var(--ink-2);font-size:.9375rem}
.ru-body .chips{margin-top:12px}
.ru-go{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;border:1px solid var(--line-2);color:var(--ink);transition:background-color .3s,color .3s,border-color .3s,transform .3s var(--ease)}
.ru-go .ic{width:18px;height:18px}
.rack-unit .led{transition-delay:calc(var(--i,0)*120ms + .35s)}
.rack-unit.is-in .led{background:var(--led);box-shadow:0 0 0 3px rgba(16,179,127,.16),0 0 10px rgba(16,179,127,.55)}
html:not(.js) .rack-unit .led{background:var(--led)}
.js .rack-unit[data-reveal]:not(.is-in){opacity:.35;transform:translateX(-16px)}
@media (hover:hover) and (pointer:fine){
  a.rack-unit:hover{transform:translateX(10px);border-color:var(--line-2);box-shadow:0 22px 44px -28px rgba(12,26,43,.45)}
  a.rack-unit:hover .led{animation:blink .45s steps(2) infinite}
  a.rack-unit:hover .ru-go{background:var(--ink);border-color:var(--ink);color:#fff}
}
@media (max-width:899.98px){
  .rack{padding:10px 22px}
  .rack::before{left:6px}.rack::after{right:6px}
  .rack-unit{grid-template-columns:auto minmax(0,1fr) auto;padding:20px 18px;gap:14px 16px}
  .ru-body{grid-column:1/-1}
  .vent{display:none}
}
.rack--static .rack-unit{grid-template-columns:auto minmax(0,13rem) minmax(0,1fr)}
@media (max-width:899.98px){.rack--static .rack-unit{grid-template-columns:auto minmax(0,1fr)}}

/* ---------- 价值 ---------- */
.values{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));list-style:none;padding:0;border-top:2px solid var(--ink)}
.value{padding:30px 28px 6px 0}
.value+.value{padding-left:28px;border-left:1px solid var(--line)}
.value .ic{width:28px;height:28px;color:var(--signal)}
.value h3{margin:20px 0 8px;font-size:1.625rem;letter-spacing:.04em}
.value p{color:var(--ink-2)}
@media (max-width:899.98px){
  .values{grid-template-columns:repeat(2,minmax(0,1fr))}
  .value:nth-child(3){padding-left:0;border-left:0}
  .value:nth-child(n+3){border-top:1px solid var(--line);margin-top:20px}
}
@media (max-width:519.98px){
  .values{grid-template-columns:1fr}
  .value,.value+.value{padding:24px 0 4px;border-left:0}
  .value+.value{border-top:1px solid var(--line)}
}

/* ---------- 厂商滚动条 ---------- */
.marquee{display:grid;gap:14px;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.mq-track{display:flex;width:max-content;animation:mq 60s linear infinite}
.mq-track--rev{animation-direction:reverse;animation-duration:70s}
.marquee:hover .mq-track{animation-play-state:paused}
.mq-list{display:flex;list-style:none;padding:0}
.mq-list li{display:flex;align-items:center;gap:28px;padding-right:28px;white-space:nowrap;font-family:var(--f-tech);font-weight:600;font-size:clamp(1.0625rem,.9rem + .7vw,1.5rem);color:var(--ink-2)}
.mq-list li::after{content:"";width:6px;height:6px;background:var(--line-2);transform:rotate(45deg)}
.mq-track--rev .mq-list li{color:var(--muted);font-weight:500}
@keyframes mq{to{transform:translateX(-50%)}}

/* ---------- 解决方案配线架 ---------- */
.panel{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding:12px;background:var(--ink);border-radius:var(--r-l);box-shadow:0 40px 80px -50px rgba(12,26,43,.7)}
.panel-group{padding:18px 16px 16px;border:1px solid rgba(255,255,255,.08);border-radius:var(--r-m);background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,0))}
.panel-group h3{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;font-size:.9375rem;font-weight:600;color:#9FB2C8}
.panel-group h3 span{font-family:var(--f-tech);font-size:.8125rem;color:#5F7690}
.panel-group ul{display:grid;gap:8px;list-style:none;padding:0}
.port{display:flex;align-items:center;gap:14px;padding:12px 14px;border-radius:10px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);color:#E3EBF5;text-decoration:none;font-weight:500;transition:border-color .25s,background-color .25s,transform .3s var(--ease)}
.port-jack{position:relative;flex:none;width:24px;height:18px;border-radius:3px;background:#06111D;box-shadow:inset 0 0 0 1px rgba(255,255,255,.14)}
.port-jack::before{content:"";position:absolute;left:6px;right:6px;bottom:3px;height:7px;border:1px solid rgba(255,255,255,.22);border-top:0}
.port-jack::after{content:"";position:absolute;right:-9px;top:50%;width:5px;height:5px;margin-top:-2.5px;border-radius:50%;background:#2A3F57;transition:background-color .25s,box-shadow .25s}
.port:hover,.port:focus-visible{border-color:rgba(0,168,198,.6);background:rgba(0,168,198,.08);transform:translateX(4px)}
.port:hover .port-jack::after,.port:focus-visible .port-jack::after{background:var(--cyan);box-shadow:0 0 8px var(--cyan)}
.port span:last-child{margin-left:6px}
@media (max-width:899.98px){.panel{grid-template-columns:1fr}}

/* ---------- 关于与问答 ---------- */
.about{display:grid;gap:56px}
@media (min-width:960px){.about{grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:72px}}
.about h2{font-size:clamp(1.75rem,1.15rem + 2.3vw,2.75rem);margin-bottom:24px}
.about-main p+p{margin-top:14px}
.about-main p{color:var(--ink-2);font-size:1.0625rem}
.facts{display:grid;margin:32px 0 0;border-top:1px solid var(--line)}
.facts div{display:grid;grid-template-columns:6em minmax(0,1fr);gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.facts dt{color:var(--muted);font-size:.9375rem}
.facts dd{margin:0;font-weight:500}
.faq-list{border-top:1px solid var(--line)}
.qa{border-bottom:1px solid var(--line)}
.qa summary{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0;cursor:pointer;list-style:none}
.qa summary::-webkit-details-marker{display:none}
.qa summary h3{font-size:1.0625rem;font-weight:600}
.qa summary:hover h3{color:var(--signal)}
.toggle{display:grid;place-items:center;flex:none;width:32px;height:32px;border-radius:50%;border:1px solid var(--line-2);color:var(--ink);transition:transform .4s var(--ease),background-color .3s,color .3s,border-color .3s}
.toggle .ic{width:16px;height:16px}
details[open]>summary .toggle{transform:rotate(45deg);background:var(--ink);border-color:var(--ink);color:#fff}
.qa-a{padding:0 48px 22px 0;color:var(--ink-2)}
details::details-content{block-size:0;overflow:clip;transition:block-size .45s var(--ease),content-visibility .45s allow-discrete}
details[open]::details-content{block-size:auto}

/* ---------- 子页首屏 ---------- */
.page-hero{position:relative;isolation:isolate;overflow:hidden;padding:calc(var(--header-h) + clamp(48px,8vw,104px)) 0 clamp(52px,6vw,88px);border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fff 0%,var(--paper) 100%)}
.page-hero::before{content:"";position:absolute;inset:0;z-index:-2;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:48px 48px;-webkit-mask-image:radial-gradient(70% 90% at 85% 30%,#000,transparent 75%);mask-image:radial-gradient(70% 90% at 85% 30%,#000,transparent 75%)}
.page-hero::after{content:"";position:absolute;left:0;right:0;top:0;z-index:-1;height:1px;background:linear-gradient(90deg,transparent,var(--cyan) 40%,var(--signal) 60%,transparent);box-shadow:0 0 16px 1px rgba(0,168,198,.45);opacity:.6;animation:sweep 7s linear infinite}
@keyframes sweep{0%{transform:translateY(0);opacity:0}10%{opacity:.6}90%{opacity:.6}100%{transform:translateY(560px);opacity:0}}
.ph-grid{display:grid;gap:40px}
@media (min-width:1000px){.ph-grid{grid-template-columns:minmax(0,7fr) minmax(0,4fr);align-items:end;gap:64px}}
.crumbs ol{display:flex;flex-wrap:wrap;gap:6px;list-style:none;padding:0;margin-bottom:22px;font-size:.875rem;color:var(--muted);animation:rise .7s var(--ease) both}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--line-2)}
.crumbs a{color:var(--ink-2);text-decoration:none}
.crumbs a:hover{color:var(--signal)}
.ph-title{font-size:clamp(2.25rem,1.3rem + 3.8vw,4rem);letter-spacing:-.015em}
.ph-lead{margin-top:22px;max-width:40em;font-size:clamp(1rem,.94rem + .3vw,1.125rem);line-height:1.9;color:var(--ink-2);animation:rise .9s .55s var(--ease) both}
.ph-lead+.ph-lead{margin-top:12px}
.ph-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;animation:rise .9s .7s var(--ease) both}
.spec{padding:22px 24px 10px;background:rgba(255,255,255,.88);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:0 34px 60px -44px rgba(12,26,43,.45);animation:rise .9s .45s var(--ease) both}
.spec-head{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:.8125rem;color:var(--muted)}
.spec dl{margin:0}
.spec dl div{display:grid;grid-template-columns:5.5em minmax(0,1fr);gap:12px;padding:12px 0;border-top:1px solid var(--line)}
.spec dt{color:var(--muted);font-size:.875rem}
.spec dd{margin:0;font-weight:500;font-size:.9375rem;line-height:1.6}

/* ---------- 子页通用组件 ---------- */
.features{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;list-style:none;padding:0;background:var(--line);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden}
.feature{padding:30px 28px 32px;background:var(--surface)}
.feature h3{margin:22px 0 8px;font-size:1.125rem}
.feature p{color:var(--ink-2);font-size:.9375rem}
.features--5{grid-template-columns:repeat(6,minmax(0,1fr))}
.features--5 .feature{grid-column:span 2}
.features--5 .feature:nth-child(-n+2){grid-column:span 3}
.features--7{grid-template-columns:repeat(4,minmax(0,1fr))}
.features--7 .feature:first-child{grid-column:span 2}
@media (max-width:899.98px){
  .features,.features--5,.features--7{grid-template-columns:repeat(2,minmax(0,1fr))}
  .features--5 .feature,.features--5 .feature:nth-child(-n+2){grid-column:auto}
  .features--5 .feature:last-child{grid-column:1/-1}
}
@media (max-width:599.98px){
  .features,.features--5,.features--7{grid-template-columns:1fr}
  .features--7 .feature:first-child{grid-column:auto}
  .feature{padding:24px 20px 26px}
}

.adv{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 56px;list-style:none;padding:0}
.adv li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px;padding:26px 0;border-top:1px solid var(--line)}
.adv h3{font-size:1.125rem;margin:8px 0 6px}
.adv p{color:var(--ink-2);font-size:.9375rem}
@media (max-width:799.98px){.adv{grid-template-columns:1fr}}

.compare{width:100%;border-collapse:separate;border-spacing:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;font-size:.9375rem}
.note{margin-top:12px;font-size:.8125rem;color:var(--muted)}
.compare th,.compare td{padding:18px 22px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.compare tr:last-child>*{border-bottom:0}
.compare thead th{background:var(--tint);font-weight:600;font-size:.875rem;color:var(--ink-2)}
.compare thead th:last-child{background:var(--ink);color:#fff}
.compare tbody th{width:18%;font-weight:600;white-space:nowrap}
.compare td{color:var(--ink-2)}
.compare td:last-child{background:rgba(27,77,255,.035);color:var(--ink)}
.compare td:last-child .ic{display:inline-block;width:16px;height:16px;margin-right:6px;vertical-align:-2px;color:var(--led);stroke-width:2.2}
@media (max-width:699.98px){
  .compare thead{display:none}
  .compare,.compare tbody,.compare tr,.compare th,.compare td{display:block;width:auto}
  .compare tr{border-bottom:1px solid var(--line)}
  .compare tr:last-child{border-bottom:0}
  .compare tbody th{padding:18px 18px 6px;border:0;width:auto}
  .compare td{padding:4px 18px;border:0}
  .compare td:last-child{margin:8px 12px 16px;padding:12px;border-radius:10px}
  .compare td:first-of-type::before{content:"原厂保修：";color:var(--muted)}
}

.flow{--n:6;position:relative;display:grid;grid-template-columns:repeat(var(--n),minmax(0,1fr));list-style:none;padding:0}
.flow::before,.flow::after{content:"";position:absolute;top:21px;left:22px;right:calc(100% / var(--n) - 22px);height:2px;background:var(--line)}
.flow::after{background:linear-gradient(90deg,var(--signal),var(--cyan));transform:scaleX(0);transform-origin:left;transition:transform 1.8s var(--ease)}
.flow.is-in::after{transform:scaleX(1)}
.js .flow[data-reveal]:not(.is-in){opacity:1;transform:none}
.step{position:relative;padding-right:20px}
.step-no{position:relative;z-index:1;display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--paper);border:1.5px solid var(--line-2);font-family:var(--f-num);font-weight:600;font-size:1.0625rem;color:var(--muted);transition:border-color .4s,color .4s,background-color .4s,box-shadow .4s;transition-delay:calc(var(--i,0)*.28s)}
.flow.is-in .step-no,html:not(.js) .step-no{border-color:var(--signal);color:var(--signal);background:#fff;box-shadow:0 0 0 5px var(--signal-soft)}
.step h3{margin:18px 0 6px;font-size:1.0625rem}
.step p{font-size:.9rem;color:var(--ink-2)}
@media (max-width:899.98px){
  .flow{grid-template-columns:1fr;gap:24px}
  .flow::before,.flow::after{top:22px;bottom:22px;left:21px;right:auto;width:2px;height:auto}
  .flow::after{transform:scaleY(0);transform-origin:top}
  .flow.is-in::after{transform:scaleY(1)}
  .step{display:grid;grid-template-columns:44px minmax(0,1fr);gap:2px 18px;padding:0}
  .step h3{margin:9px 0 2px}
  .step p{grid-column:2}
}

.chain{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;padding:0;counter-reset:chain}
.chain li{display:inline-flex;align-items:center;gap:8px;padding:8px 14px 8px 8px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-size:.9375rem;font-weight:500;counter-increment:chain}
.chain li::before{content:counter(chain);display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--ink);color:#fff;font-family:var(--f-num);font-size:.8125rem}
.chain li.is-key{border-color:var(--signal);background:var(--signal-soft)}
.chain li.is-key::before{background:var(--signal)}

.tiers{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;list-style:none;padding:0}
.tier{padding:28px 26px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l)}
.meter{display:flex;align-items:flex-end;gap:4px;height:26px}
.meter i{width:7px;border-radius:2px;background:var(--line)}
.meter i:nth-child(1){height:40%}.meter i:nth-child(2){height:70%}.meter i:nth-child(3){height:100%}
.meter[data-level="1"] i:nth-child(-n+1),.meter[data-level="2"] i:nth-child(-n+2),.meter[data-level="3"] i:nth-child(-n+3){background:var(--signal)}
.tier h3{margin:18px 0 8px;font-size:1.25rem}
.tier p{color:var(--ink-2);font-size:.9375rem}
@media (max-width:799.98px){.tiers{grid-template-columns:1fr}}

.subnav{position:sticky;top:var(--header-h);z-index:40;background:rgba(244,247,251,.9);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.subnav ul{display:flex;gap:6px;max-width:calc(var(--maxw) + var(--gutter)*2);margin:0 auto;padding:10px var(--gutter);list-style:none;overflow-x:auto;scrollbar-width:none;-webkit-mask-image:linear-gradient(90deg,transparent,#000 var(--gutter),#000 calc(100% - var(--gutter)),transparent);mask-image:linear-gradient(90deg,transparent,#000 var(--gutter),#000 calc(100% - var(--gutter)),transparent)}
.subnav ul::-webkit-scrollbar{display:none}
.subnav a{display:block;padding:7px 14px;border-radius:999px;color:var(--ink-2);text-decoration:none;font-size:.9375rem;white-space:nowrap;transition:background-color .25s,color .25s}
.subnav a:hover{background:rgba(12,26,43,.06);color:var(--ink)}
.subnav a[aria-current="true"]{background:var(--ink);color:#fff}
:root:has(.subnav){--subnav-h:56px}
.ops,.solution{scroll-margin-top:calc(var(--header-h) + 72px)}

.ops{padding-block:clamp(56px,7vw,96px);border-top:1px solid var(--line)}
.ops:first-of-type{border-top:0}
.ops-grid{display:grid;gap:32px}
@media (min-width:960px){
  .ops-grid{grid-template-columns:minmax(0,4fr) minmax(0,7fr);gap:64px}
  .ops-head{position:sticky;top:calc(var(--header-h) + var(--subnav-h) + 32px);align-self:start}
}
.ops-head h2{margin:20px 0 14px;font-size:clamp(1.625rem,1.2rem + 1.6vw,2.25rem)}
.ops-head p{color:var(--ink-2)}
.items{list-style:none;padding:0;border-top:1px solid var(--line)}
.item{display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;padding:22px 0;border-bottom:1px solid var(--line)}
.item::before{content:"";width:10px;height:10px;margin-top:9px;border-radius:2px;border:1.5px solid var(--signal);transform:rotate(45deg)}
.item h3{font-size:1.0625rem;margin-bottom:6px}
.item p,.item li{color:var(--ink-2);font-size:.9375rem}
.item ol{padding-left:1.3em;display:grid;gap:4px}
.item .chips{margin-top:10px}

.stack{display:grid;gap:8px;list-style:none;padding:0;justify-items:center}
.stack li{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 22px;border-radius:12px;background:var(--surface);border:1px solid var(--line);font-weight:600;transition:opacity .7s var(--ease),transform .7s var(--ease),background-color .3s}
.stack li span{font-family:var(--f-tech);font-size:.8125rem;font-weight:500;color:var(--muted)}
.stack li:nth-child(1){width:52%;background:var(--ink);color:#fff;border-color:var(--ink)}
.stack li:nth-child(1) span{color:#8FA1B6}
.stack li:nth-child(2){width:64%}
.stack li:nth-child(3){width:76%}
.stack li:nth-child(4){width:88%}
.stack li:nth-child(5){width:100%}
.js .stack[data-reveal]:not(.is-in){opacity:1;transform:none}
.js .stack li{transition-delay:calc((4 - var(--i,0))*.12s)}
.js .stack:not(.is-in) li{opacity:0;transform:translateY(14px) scale(.98)}
@media (max-width:599.98px){.stack li{width:100%!important}}

.split{display:grid;gap:40px}
@media (min-width:960px){.split{grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:64px;align-items:center}}
.prose p{color:var(--ink-2);font-size:1.0625rem}
.prose p+p{margin-top:14px}

.solution{padding-block:clamp(56px,7vw,96px);border-top:1px solid var(--line)}
.solution:first-of-type{border-top:0}
.sol-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;margin-bottom:28px}
.sol-head .ic-box{width:52px;height:52px;border-radius:14px}
.sol-head h2{font-size:clamp(1.625rem,1.2rem + 1.6vw,2.25rem)}
.sol-tag{padding:4px 12px;border-radius:999px;background:var(--signal-soft);color:var(--signal);font-size:.8125rem;font-weight:500}
.sol-body{display:grid;gap:32px}
@media (min-width:960px){.sol-body{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px}}
.sol-body--wide{grid-template-columns:1fr!important}
.box{padding:24px 26px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l)}
.box+.box{margin-top:12px}
.box h3{margin-bottom:12px;font-size:1rem}
.ticks{display:grid;gap:10px;list-style:none;padding:0}
.ticks li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;color:var(--ink-2);font-size:.9375rem}
.ticks .ic{width:18px;height:18px;margin-top:4px;color:var(--led);stroke-width:2}
.sub-h{margin:28px 0 10px;font-size:1.125rem}
.sub-h:first-child{margin-top:0}
.cols{display:grid;gap:12px}
@media (min-width:800px){.cols--2{grid-template-columns:repeat(2,minmax(0,1fr))}.cols--3{grid-template-columns:repeat(3,minmax(0,1fr))}}
.cell{padding:22px 22px 24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m)}
.cell h3,.cell h4{font-size:1.0625rem;margin-bottom:8px}
.cell p,.cell li{color:var(--ink-2);font-size:.9375rem}
.cell ul{padding-left:1.1em;display:grid;gap:6px;margin-top:6px}
.cell .kpi{display:inline-block;margin-top:12px;padding:3px 10px;border-radius:6px;background:var(--ink);color:#fff;font-family:var(--f-tech);font-size:.8125rem;font-weight:600;letter-spacing:.02em}

.diagram{margin:0;padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l)}
.diagram figcaption{margin-top:12px;font-size:.875rem;color:var(--muted)}
.dg{width:100%;height:auto;font-family:var(--f-cn)}
.dg text{fill:var(--ink-2);font-size:13px}
.dg .t-strong{fill:var(--ink);font-weight:600}
.dg .t-small{font-size:11px;fill:var(--muted)}
.dg .t-tech{font-family:var(--f-tech);font-weight:600}
.dg .bx{fill:var(--surface);stroke:var(--line-2);stroke-width:1.2}
.dg .bx-hl{fill:#EEF2FF;stroke:var(--signal);stroke-width:1.4}
.dg .bx-ink{fill:var(--ink);stroke:none}
.dg .bx-ink+text,.dg .t-inv{fill:#fff}
.dg .ln{stroke:var(--line-2);stroke-width:1.4;fill:none}
.dg .ln-flow{stroke:var(--signal);stroke-width:1.8;fill:none;stroke-dasharray:6 6;animation:dash 1.2s linear infinite}
.dg .ln-cyan{stroke:var(--cyan);stroke-width:1.8;fill:none;stroke-dasharray:4 6;animation:dash 1.6s linear infinite}
.dg .ln-dash{stroke:var(--amber);stroke-width:1.4;fill:none;stroke-dasharray:3 4}
.dg .rk{stroke:var(--line-2);stroke-width:1.2}
@keyframes dash{to{stroke-dashoffset:-24}}
.cols .diagram{padding:14px}
.dg--tall{display:none}
@media (max-width:599.98px){
  .dg--wide{display:none}
  .dg--tall{display:block}
}

.hci{display:grid;gap:8px}
.hci-row{display:grid;gap:8px;grid-template-columns:repeat(3,minmax(0,1fr))}
.hci-cell{padding:14px 12px;border-radius:10px;text-align:center;font-weight:600;font-size:.9375rem;background:var(--surface);border:1px solid var(--line)}
.hci-cell small{display:block;margin-top:2px;font-weight:400;font-size:.8125rem;color:var(--muted)}
.hci-top{background:var(--ink);color:#fff;border-color:var(--ink)}
.hci-mid{background:#EEF2FF;border-color:rgba(27,77,255,.3)}
.hci-nodes{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.hci-node{height:44px;border-radius:8px;border:1px solid var(--line-2);background:repeating-linear-gradient(180deg,#fff 0 9px,var(--tint) 9px 11px)}
.hci-note{text-align:center;font-size:.8125rem;color:var(--muted)}
@media (max-width:599.98px){
  .hci-cell{padding:12px 4px;font-size:.8125rem}
  .hci-cell small{font-size:.75rem}
}

.loop{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;position:relative}
.loop .cell{position:relative}
.loop-center{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2;display:grid;place-items:center;width:112px;height:112px;border-radius:50%;background:var(--ink);color:#fff;text-align:center;font-size:.875rem;font-weight:600;line-height:1.4;box-shadow:0 0 0 8px var(--surface),0 0 0 9px var(--line)}
.loop .cell:nth-child(2),.loop .cell:nth-child(4){text-align:right}
.loop .cell h3{display:flex;align-items:center;gap:8px}
.loop .cell:nth-child(2) h3,.loop .cell:nth-child(4) h3{justify-content:flex-end}
.loop .cell{padding-bottom:40px}
.loop .cell:nth-child(n+3){padding-top:40px;padding-bottom:22px}
@media (max-width:699.98px){
  .loop{grid-template-columns:1fr}
  .loop-center{position:static;transform:none;width:auto;height:auto;border-radius:var(--r-m);padding:14px;box-shadow:none;order:-1}
  .loop .cell:nth-child(n){text-align:left;padding:22px}
  .loop .cell:nth-child(2) h3,.loop .cell:nth-child(4) h3{flex-direction:row-reverse;justify-content:flex-end}
}

.zones{display:grid;gap:10px}
.zone-center{padding:18px 22px;border-radius:var(--r-m);background:var(--ink);color:#fff}
.zone-center h3{color:#fff;font-size:1.0625rem}
.zone-center p{color:#B7C4D4;font-size:.9375rem;margin-top:4px}
.zone-row{display:grid;gap:10px;grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:799.98px){.zone-row{grid-template-columns:1fr}}

.checkpoints{display:flex;align-items:center;list-style:none;padding:0;margin:8px 0 6px}
.checkpoints li{flex:1;display:flex;align-items:center}
.checkpoints li::before{content:attr(data-n);display:grid;place-items:center;flex:none;width:30px;height:30px;border-radius:50%;border:1.5px solid var(--signal);color:var(--signal);background:#fff;font-family:var(--f-num);font-weight:600;font-size:.875rem}
.checkpoints li::after{content:"";flex:1;height:2px;background:repeating-linear-gradient(90deg,var(--signal) 0 6px,transparent 6px 10px)}
.checkpoints li:last-child{flex:none}
.checkpoints li:last-child::after{display:none}

/* ---------- 招聘 ---------- */
.jobs{display:grid;gap:12px}
.job{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);transition:border-color .3s,box-shadow .3s}
.job[open]{border-color:var(--line-2);box-shadow:0 24px 48px -36px rgba(12,26,43,.45)}
.job summary{display:grid;grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:4px 28px;padding:22px 24px;cursor:pointer;list-style:none}
.job summary h2{grid-column:1;grid-row:1}
.job summary .job-meta{grid-column:1;grid-row:2}
.job summary .job-pay{grid-column:2;grid-row:1/3}
.job summary .toggle{grid-column:3;grid-row:1/3}
.job summary::-webkit-details-marker{display:none}
.job h2{font-size:1.1875rem}
.job-meta{display:flex;flex-wrap:wrap;gap:4px 16px;font-size:.875rem;color:var(--muted)}
.job-pay{font-family:var(--f-num);font-weight:600;font-size:1.375rem;color:var(--signal);white-space:nowrap}
.job summary:hover h2{color:var(--signal)}
.job-body{display:grid;gap:28px;padding:4px 24px 26px}
@media (min-width:900px){.job-body{grid-template-columns:repeat(2,minmax(0,1fr))}}
.job-body h3{margin-bottom:10px;font-size:.9375rem}
.job-body ol{padding-left:1.3em;display:grid;gap:6px;color:var(--ink-2);font-size:.9375rem}
.job-foot{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:12px 28px;padding-top:18px;border-top:1px dashed var(--line);font-size:.9375rem;color:var(--ink-2)}
.job-foot a{font-weight:600}
@media (max-width:599.98px){
  .job summary{grid-template-columns:minmax(0,1fr) auto;padding:18px}
  .job summary .job-pay{grid-row:3;grid-column:1;font-size:1.1875rem}
  .job summary .toggle{grid-row:1/4;grid-column:2}
  .job-body{padding:4px 18px 22px}
}

/* ---------- 相关服务 ---------- */
.related{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;list-style:none;padding:0}
.rel{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:6px 16px;height:100%;padding:22px;border:1px solid var(--line);border-radius:var(--r-l);background:var(--surface);color:inherit;text-decoration:none;transition:border-color .3s,transform .4s var(--ease)}
.rel-name{font-weight:700;font-size:1.0625rem}
.rel-sum{grid-column:1/-1;color:var(--ink-2);font-size:.9rem;margin-top:8px}
.rel-go{grid-row:1;grid-column:3;color:var(--muted);transition:transform .3s var(--ease),color .3s}
.rel:hover{border-color:var(--line-2);transform:translateY(-3px)}
.rel:hover .rel-go{color:var(--signal);transform:translateX(3px)}
@media (max-width:899.98px){.related{grid-template-columns:1fr}}

/* ---------- 404 ---------- */
.notfound{min-height:80svh;display:grid;place-items:center;text-align:center;padding:calc(var(--header-h) + 48px) var(--gutter) 64px}
.notfound .code{font-family:var(--f-num);font-weight:600;font-size:clamp(5rem,3rem + 10vw,10rem);line-height:1;background:linear-gradient(90deg,var(--signal),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.notfound h1{margin:16px 0 12px;font-size:1.75rem}
.notfound p{color:var(--ink-2)}
.notfound .hero-actions{justify-content:center;animation:none}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;isolation:isolate;overflow:hidden;padding:clamp(72px,9vw,120px) 0 28px;background:var(--ink);color:#B7C4D4}
.site-footer::before{content:"";position:absolute;inset:0;z-index:-1;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:radial-gradient(70% 80% at 85% 0%,#000,transparent 75%);mask-image:radial-gradient(70% 80% at 85% 0%,#000,transparent 75%)}
.site-footer a{color:#E6EDF6;text-decoration:none}
.foot-cta{display:grid;gap:32px;padding-bottom:clamp(48px,6vw,72px);border-bottom:1px solid rgba(255,255,255,.1)}
@media (min-width:960px){.foot-cta{grid-template-columns:minmax(0,6fr) minmax(0,5fr);align-items:end;gap:64px}}
.foot-cta h2{margin-bottom:14px;color:#fff;font-size:clamp(1.875rem,1.2rem + 2.6vw,3rem)}
.foot-cta p{max-width:34em;font-size:1.0625rem}
.foot-lines{display:grid;gap:10px}
.foot-line{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;border:1px solid rgba(255,255,255,.12);border-radius:var(--r-m);transition:border-color .25s,background-color .25s}
.foot-line:hover{border-color:var(--cyan);background:rgba(0,168,198,.07)}
.fl-label{display:flex;align-items:center;gap:10px;font-size:.875rem;color:#8FA1B6}
.fl-label .ic{width:18px;height:18px;color:var(--cyan)}
.fl-val{font-family:var(--f-tech);font-weight:600;font-size:clamp(1.0625rem,.95rem + .6vw,1.5rem);color:#fff;letter-spacing:.02em}
.foot-grid{display:grid;gap:40px;padding:52px 0}
@media (min-width:900px){.foot-grid{grid-template-columns:minmax(0,5fr) minmax(0,3fr) minmax(0,4fr);gap:56px}}
.foot-grid h3{margin-bottom:16px;font-size:.9375rem;color:#fff}
.brand--light .brand-cn{color:#fff}
.brand--light .brand-en{color:#8FA1B6}
.foot-about p{margin-top:18px;max-width:30em;font-size:.9375rem}
.foot-links ul{display:grid;gap:10px;list-style:none;padding:0}
.foot-links a{color:#B7C4D4;transition:color .2s}
.foot-links a:hover{color:#fff}
.foot-contact address{display:grid;gap:12px;font-style:normal}
.foot-contact a{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;color:#B7C4D4;font-size:.9375rem;transition:color .2s}
.foot-contact a:hover{color:#fff}
.foot-contact .ic{width:18px;height:18px;margin-top:4px;color:var(--cyan)}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);font-size:.8125rem;color:#7F91A6}
.foot-bottom a{color:#7F91A6}
.foot-bottom a:hover{color:#fff}
.js .foot-cta[data-reveal]:not(.is-in){transform:translateY(28px)}

/* ---------- 减少动态效果 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;animation-delay:0s!important;transition-duration:.01ms!important;transition-delay:0s!important}
  .mq-track{animation:none!important;flex-wrap:wrap;width:auto}
  .mq-track>[aria-hidden="true"]{display:none}
  .mq-list{flex-wrap:wrap;row-gap:10px}
  .page-hero::after{display:none}
}

/* ---------- 打印 ---------- */
@media print{
  .site-header,.m-panel,.progress,.page-veil,.hero-canvas,.ph-canvas,.subnav,.m-dock,.more-btn,.snap-bar{display:none!important}
  .items.is-clamped>li{display:grid!important}
  .hero,.page-hero{min-height:0;padding-top:24px}
  .js [data-reveal]{opacity:1!important;transform:none!important}
  .site-footer{background:none;color:#000}
}

/* ==========  第二版：子页电路背景、手机端交互  ========== */
.ph-canvas{position:absolute;inset:0;z-index:-1;width:100%;height:100%;-webkit-mask-image:linear-gradient(90deg,transparent 28%,#000 62%);mask-image:linear-gradient(90deg,transparent 28%,#000 62%);opacity:0;animation:fade-in 1.2s .2s var(--ease) forwards}
@media (max-width:899.98px){
  .ph-canvas{-webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.35) 45%,rgba(0,0,0,.6) 100%);mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.35) 45%,rgba(0,0,0,.6) 100%)}
}

/* 横滑卡片（手机端） */
.snap-bar{display:none}
@media (max-width:599.98px){
  .features,.tiers,.related{display:flex;gap:12px;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;scroll-padding-inline:var(--gutter);margin-inline:calc(var(--gutter) * -1);padding:4px var(--gutter) 6px;background:none;border:0;border-radius:0;scrollbar-width:none}
  .features::-webkit-scrollbar,.tiers::-webkit-scrollbar,.related::-webkit-scrollbar{display:none}
  .features>li,.tiers>li,.related>li{flex:0 0 84%;scroll-snap-align:start}
  .features>li:last-child,.tiers>li:last-child,.related>li:last-child{margin-right:var(--gutter)}
  .feature{border:1px solid var(--line);border-radius:var(--r-l)}
  .snap-bar{display:block;width:96px;height:3px;margin:16px auto 0;border-radius:3px;background:var(--line);overflow:hidden}
  .snap-bar i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--signal),var(--cyan));transition:transform .1s linear}
}
.snap-bar[hidden]{display:none!important}

/* 长列表折叠（手机端） */
.more-btn{display:none}
@media (max-width:767.98px){
  .items.is-clamped{position:relative}
  .items.is-clamped>li:nth-child(n+4){display:none}
  .items.is-clamped::after{content:"";position:absolute;left:0;right:0;bottom:0;height:72px;background:linear-gradient(rgba(255,255,255,0),var(--surface));pointer-events:none}
  .more-btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;height:46px;margin-top:14px;border:1px solid var(--line-2);border-radius:999px;background:var(--surface);color:var(--ink);font:inherit;font-size:.9375rem;font-weight:600;cursor:pointer}
  .more-btn i{width:8px;height:8px;margin-top:-4px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg);transition:transform .3s var(--ease)}
  .more-btn[aria-expanded="true"] i{margin-top:4px;transform:rotate(-135deg)}
}

/* 底部邮件咨询（手机端）：旋转光边 */
.m-dock{display:none}
@media (max-width:1023.98px){
  .m-dock{position:fixed;left:var(--gutter);right:var(--gutter);bottom:calc(14px + env(safe-area-inset-bottom));z-index:45;display:flex;align-items:center;gap:10px;height:54px;padding:0 20px;border-radius:999px;overflow:hidden;isolation:isolate;color:#fff;text-decoration:none;box-shadow:0 18px 40px -16px rgba(12,26,43,.65);transform:translateY(160%);transition:transform .5s var(--ease)}
  .m-dock::before{content:"";position:absolute;z-index:-2;left:50%;top:50%;width:200vmax;height:200vmax;margin:-100vmax 0 0 -100vmax;background:conic-gradient(from 0deg,transparent 0 72%,var(--cyan) 86%,var(--signal) 92%,transparent 100%);animation:spin 3.6s linear infinite}
  .m-dock::after{content:"";position:absolute;z-index:-1;inset:1.5px;border-radius:inherit;background:var(--ink)}
  .m-dock .ic{width:20px;height:20px;color:var(--cyan)}
  .m-dock span{font-weight:600}
  .m-dock b{margin-left:auto;font-family:var(--f-tech);font-weight:600;letter-spacing:.02em;color:#B7C4D4}
  .dock-on .m-dock{transform:none}
  .m-open .m-dock{transform:translateY(160%)}
}
@keyframes spin{to{transform:rotate(1turn)}}

/* 触屏按压反馈 */
@media (hover:none){
  .btn,.rack-unit,.rel,.port,.feature,.tier,.m-line,.foot-line,.job summary{-webkit-tap-highlight-color:transparent}
  .btn:active,a.rack-unit:active,.rel:active,.port:active,.m-line:active,.foot-line:active{transform:scale(.97)}
  a.rack-unit:active .led{animation:blink .3s steps(2) 2}
}

/* 页脚主邮箱 */
.foot-line--main{border-color:rgba(0,168,198,.45);background:rgba(0,168,198,.06)}
@media (max-width:599.98px){.fl-val{font-size:1rem}}