/* ==========================================================================
   Intaek 上海仁泽 · 官网样式  (纯白 + 大留白)
   全部手写，无框架依赖。断点 1200 / 992 / 768 / 560
   ========================================================================== */

:root{
  --ink:#111418;
  --ink-2:#3D444D;
  --ink-3:#767E8A;
  --ink-4:#A7AEB8;
  --line:#E6E9EE;
  --line-2:#F0F2F5;
  --bg:#FFFFFF;
  --bg-2:#F7F8FA;
  --bg-3:#F2F4F7;
  --accent:#D9482C;
  --accent-2:#B33A22;
  --dark:#0C0F14;

  --wrap:1240px;
  --pad:32px;
  --hdr:76px;

  --ff:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;

  --ease:cubic-bezier(.22,1,.36,1);
  --ease-io:cubic-bezier(.4,0,.2,1);
  --r:16px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--hdr) + 16px)}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--ff);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.2;letter-spacing:-.02em}
ul{margin:0;padding:0;list-style:none}
em,i{font-style:normal}
svg{width:100%;height:100%;display:block}
::selection{background:var(--ink);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

.skip{position:fixed;top:-100px;left:16px;z-index:200;background:var(--ink);color:#fff;padding:10px 16px;border-radius:8px;transition:top .2s}
.skip:focus{top:10px}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
[hidden]{display:none!important}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--pad);width:100%}

/* ---------- 阅读进度 ---------- */
.progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:120;pointer-events:none}
.progress i{display:block;height:100%;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:0 50%;transition:transform .1s linear}

/* ---------- 头部 ---------- */
.hdr{
  position:fixed;top:0;left:0;right:0;z-index:110;height:var(--hdr);
  transition:height .35s var(--ease),background .35s var(--ease),box-shadow .35s var(--ease),border-color .35s;
  border-bottom:1px solid transparent;
}
.hdr__in{display:flex;align-items:center;gap:28px;height:100%}
.hdr.is-stuck{
  height:64px;background:rgba(255,255,255,.82);-webkit-backdrop-filter:saturate(180%) blur(14px);
  backdrop-filter:saturate(180%) blur(14px);border-bottom-color:var(--line);
}
.hdr.is-hide{transform:translateY(-100%)}
.hdr{transition:transform .4s var(--ease),height .35s var(--ease),background .35s var(--ease),border-color .35s}

.brand{display:flex;align-items:center;flex:0 0 auto}
.brand__logo{display:block;height:34px;width:auto;transition:opacity .3s var(--ease)}
.brand:hover .brand__logo{opacity:.78}

.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav a{position:relative;padding:9px 14px;font-size:14.5px;color:var(--ink-2);border-radius:8px;transition:color .25s}
.nav a::after{content:"";position:absolute;left:14px;right:14px;bottom:5px;height:1.5px;background:var(--accent);transform:scaleX(0);transform-origin:0 50%;transition:transform .38s var(--ease)}
.nav a:hover{color:var(--ink)}
.nav a:hover::after,.nav a.is-cur::after{transform:scaleX(1)}
.nav a.is-cur{color:var(--ink);font-weight:500}

.hdr__act{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.hdr__tel{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:var(--ink-2);letter-spacing:.02em;padding:8px 14px;border:1px solid var(--line);border-radius:999px;transition:.3s var(--ease)}
.hdr__tel svg{width:15px;height:15px;color:var(--accent)}
.hdr__tel:hover{border-color:var(--ink);color:var(--ink);background:var(--bg-2)}

.burger{display:none;width:42px;height:42px;position:relative;border-radius:10px}
.burger i{position:absolute;left:11px;right:11px;height:1.6px;background:var(--ink);transition:.35s var(--ease)}
.burger i:first-child{top:17px}
.burger i:last-child{top:25px}
.burger[aria-expanded="true"] i:first-child{transform:translateY(4px) rotate(45deg)}
.burger[aria-expanded="true"] i:last-child{transform:translateY(-4px) rotate(-45deg)}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:var(--hdr) 0 0 0;z-index:105;background:#fff;
  transform:translateX(101%);transition:transform .5s var(--ease);
  display:flex;flex-direction:column;padding:28px var(--pad) 36px;overflow-y:auto;
}
.drawer.is-open{transform:none;box-shadow:0 0 0 100vmax rgba(10,12,16,.28)}
.drawer nav{display:flex;flex-direction:column}
.drawer nav a{
  display:flex;align-items:baseline;justify-content:space-between;
  padding:19px 0;border-bottom:1px solid var(--line);font-size:22px;font-weight:500;
  opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.drawer.is-open nav a{opacity:1;transform:none}
.drawer.is-open nav a:nth-child(1){transition-delay:.06s}
.drawer.is-open nav a:nth-child(2){transition-delay:.11s}
.drawer.is-open nav a:nth-child(3){transition-delay:.16s}
.drawer.is-open nav a:nth-child(4){transition-delay:.21s}
.drawer.is-open nav a:nth-child(5){transition-delay:.26s}
.drawer nav em{font-size:12px;color:var(--ink-4);letter-spacing:.16em;text-transform:uppercase}
.drawer__ft{margin-top:auto;padding-top:32px;display:flex;flex-direction:column;gap:10px;font-size:15px;color:var(--ink-2)}
.drawer__ft a:hover{color:var(--accent)}

/* ---------- 通用：section ---------- */
.sec{padding:132px 0}
.sec--soft{background:var(--bg-2)}
.eyebrow{
  display:flex;align-items:center;gap:12px;
  font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-3);font-weight:500;
}
.eyebrow i{font-style:normal;color:var(--accent);font-weight:600;letter-spacing:.06em}
.eyebrow::after{content:"";width:34px;height:1px;background:var(--line)}
.eyebrow--lt{color:rgba(255,255,255,.6)}
.eyebrow--lt::after{background:rgba(255,255,255,.25)}
.eyebrow--lt i{color:var(--accent)}

.h2{font-size:clamp(30px,4.2vw,48px);margin-top:16px;letter-spacing:-.03em}
.h2--lt{color:#fff}

.sechd{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:56px}
.sechd__note{font-size:14.5px;color:var(--ink-3);max-width:30em;text-align:right;padding-bottom:8px}
.sechd__note b{color:var(--ink);font-weight:600}

/* 滚动揭示 */
[data-reveal]{opacity:0;transform:translateY(26px);transition:opacity .85s var(--ease),transform .85s var(--ease);transition-delay:var(--d,0s)}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- 通用：按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:52px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:500;letter-spacing:.02em;
  transition:transform .4s var(--ease),background .3s,color .3s,border-color .3s,box-shadow .4s var(--ease);
  will-change:transform;
}
.btn svg{width:17px;height:17px;flex:0 0 17px;transition:transform .4s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn--ink{background:var(--ink);color:#fff}
.btn--ink:hover{background:#000;transform:translateY(-2px);box-shadow:0 12px 28px -12px rgba(17,20,24,.5)}
.btn--ghost{border:1px solid var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink);transform:translateY(-2px)}
.btn--accent{background:var(--accent);color:#fff}
.btn--accent:hover{background:var(--accent-2);transform:translateY(-2px);box-shadow:0 12px 28px -12px rgba(217,72,44,.6)}

/* ==========================================================================
   版头
   ========================================================================== */
.hero{padding:calc(var(--hdr) + 96px) 0 0;position:relative;overflow:hidden}
.hero__eyebrow{font-size:12.5px;letter-spacing:.2em;color:var(--ink-3);text-transform:uppercase}
.hero__title{margin-top:22px;font-size:clamp(64px,12.5vw,168px);line-height:.92;letter-spacing:-.05em;font-weight:700;height:1em;position:relative}
.rot{display:block;position:relative;height:1em}
.rot__item{
  position:absolute;left:0;top:0;white-space:nowrap;
  opacity:0;transform:translateY(.34em) rotate(4deg);filter:blur(10px);
  transition:opacity .7s var(--ease),transform .9s var(--ease),filter .9s var(--ease);
}
.rot__item.is-on{opacity:1;transform:none;filter:blur(0)}
.rot__item.is-out{opacity:0;transform:translateY(-.32em) rotate(-4deg);filter:blur(10px)}

.hero__quotes{margin-top:30px;max-width:640px;position:relative;min-height:calc(1.75em * 2)}
.hero__quotes .q{
  position:absolute;left:0;top:0;font-size:17px;color:var(--ink-2);line-height:1.75;
  opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.hero__quotes .q.is-on{opacity:1;transform:none}

.hero__cta{display:flex;gap:14px;margin-top:44px;flex-wrap:wrap}

/* 封面滚动带 */
.marquee{margin-top:84px;padding-bottom:12px;overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 9%,#000 91%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 9%,#000 91%,transparent);
}
.marquee__row{display:flex;gap:18px;width:max-content;animation:mq 62s linear infinite}
.marquee__row--rev{animation-direction:reverse;margin-top:18px;animation-duration:74s}
.marquee:hover .marquee__row{animation-play-state:paused}
@keyframes mq{to{transform:translateX(-50%)}}
.mq__i{width:232px;flex:0 0 232px;border-radius:12px;overflow:hidden;background:var(--bg-3);position:relative}
.mq__i img{width:100%;aspect-ratio:500/529;object-fit:cover;transition:transform .7s var(--ease),filter .5s}
.mq__i:hover img{transform:scale(1.05)}
.mq__i figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 12px 10px;font-size:12px;color:#fff;
  background:linear-gradient(transparent,rgba(8,10,14,.78));opacity:0;transition:opacity .4s var(--ease);
}
.mq__i:hover figcaption{opacity:1}

/* ==========================================================================
   数据
   ========================================================================== */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:36px}
.stats__in{display:grid;grid-template-columns:repeat(5,1fr)}
.stat{padding:42px 8px;text-align:center;position:relative}
.stat+.stat::before{content:"";position:absolute;left:0;top:26%;bottom:26%;width:1px;background:var(--line)}
.stat b{display:block;font-size:clamp(30px,3.6vw,44px);font-weight:600;letter-spacing:-.03em;line-height:1.1;font-variant-numeric:tabular-nums}
.stat span{display:block;margin-top:8px;font-size:12.5px;color:var(--ink-3);letter-spacing:.06em}

/* ==========================================================================
   关于我们
   ========================================================================== */
.about{display:grid;grid-template-columns:1.02fr .98fr;gap:76px;align-items:start}
.about__p{margin-top:24px;font-size:16.5px;color:var(--ink-2);line-height:2}
.about__meta{margin-top:34px;display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line)}
.about__meta li{display:flex;gap:20px;align-items:baseline;padding:16px 0;border-bottom:1px solid var(--line)}
.about__meta b{flex:0 0 76px;font-size:14px;color:var(--accent);letter-spacing:.04em;font-weight:600}
.about__meta span{font-size:14.5px;color:var(--ink-2)}

.about__r{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.about__r figure{margin:0;border-radius:12px;overflow:hidden;background:var(--bg-3);position:relative}
.about__r figure:nth-child(2),.about__r figure:nth-child(4){transform:translateY(28px)}
.about__r img{width:100%;aspect-ratio:2/1;object-fit:cover;transition:transform .8s var(--ease)}
.about__r figure:hover img{transform:scale(1.06)}

/* ==========================================================================
   服务项目
   ========================================================================== */
.svc{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.svc__c{
  background:#fff;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);
  transition:transform .5s var(--ease),box-shadow .5s var(--ease),border-color .5s;
  display:flex;flex-direction:column;
}
.svc__c:hover{transform:translateY(-6px);box-shadow:0 26px 50px -30px rgba(17,20,24,.34);border-color:transparent}
.svc__c figure{margin:0;overflow:hidden;background:var(--bg-3)}
.svc__c img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .8s var(--ease)}
.svc__c:hover img{transform:scale(1.06)}
.svc__b{padding:24px 24px 28px;display:flex;flex-direction:column;flex:1}
.svc__n{display:flex;align-items:baseline;gap:9px}
.svc__n h3{font-size:19px}
.svc__n em{font-size:11px;color:var(--ink-4);letter-spacing:.14em;text-transform:uppercase}
.svc__b p{margin-top:10px;font-size:14px;color:var(--ink-3);line-height:1.8}
.svc__i{margin-top:auto;padding-top:18px;font-size:12px;color:var(--ink-4);letter-spacing:.1em}

/* ==========================================================================
   案例展示
   ========================================================================== */
.filters{position:relative;display:flex;flex-wrap:wrap;gap:8px;margin-bottom:44px;
  padding:5px;background:var(--bg-2);border-radius:999px;align-self:flex-start;width:max-content;max-width:100%}
.filters__pill{
  position:absolute;top:5px;height:calc(100% - 10px);border-radius:999px;background:var(--ink);
  transition:left .48s var(--ease),width .48s var(--ease);z-index:0;
}
.chip{
  position:relative;z-index:1;display:inline-flex;align-items:center;gap:7px;
  height:40px;padding:0 20px;border-radius:999px;font-size:14.5px;color:var(--ink-2);
  transition:color .35s var(--ease);white-space:nowrap;
}
.chip em{font-size:10.5px;opacity:.5;font-variant-numeric:tabular-nums;transition:opacity .3s}
.chip:hover{color:var(--ink)}
.chip.is-on{color:#fff}
.chip.is-on em{opacity:.72}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px 28px}
.grid__empty{text-align:center;color:var(--ink-3);padding:80px 0;font-size:15px}

.card{position:relative;will-change:transform}
.card__a{display:block}
.card__fig{
  margin:0;position:relative;border-radius:12px;overflow:hidden;background:var(--bg-3);
  aspect-ratio:500/529;
}
.card__fig img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease),filter .6s var(--ease)}
.card:hover .card__fig img{transform:scale(1.055)}
.card__ov{
  position:absolute;inset:0;display:flex;align-items:flex-end;justify-content:space-between;gap:12px;
  padding:22px;opacity:0;transition:opacity .5s var(--ease);
  background:linear-gradient(to top,rgba(8,10,14,.74),rgba(8,10,14,.12) 52%,transparent);
}
.card:hover .card__ov,.card:focus-within .card__ov{opacity:1}
.card__ov p{color:#fff;font-size:13.5px;line-height:1.5;transform:translateY(14px);transition:transform .55s var(--ease) .05s;max-width:74%}
.card:hover .card__ov p{transform:none}
.card__go{
  width:42px;height:42px;flex:0 0 42px;border-radius:50%;background:#fff;color:var(--ink);
  display:grid;place-items:center;transform:translateY(14px) scale(.86);transition:transform .55s var(--ease) .08s;
}
.card__go svg{width:17px;height:17px}
.card:hover .card__go{transform:none}
.card__tag{
  position:absolute;top:14px;left:14px;z-index:2;
  height:27px;padding:0 12px;border-radius:999px;display:inline-flex;align-items:center;
  font-size:11.5px;letter-spacing:.08em;color:var(--ink);background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  opacity:0;transform:translateY(-6px);transition:.45s var(--ease);
}
.card:hover .card__tag{opacity:1;transform:none}
.card__b{padding:18px 2px 0;display:flex;align-items:flex-start;justify-content:space-between;gap:14px}
.card__t{font-size:16.5px;font-weight:600;letter-spacing:-.01em;line-height:1.45}
.card__s{margin-top:5px;font-size:13.5px;color:var(--ink-3);line-height:1.6}
.card__line{position:absolute;left:0;bottom:-14px;height:1px;width:100%;background:var(--line);overflow:hidden}
.card__line i{display:block;height:100%;background:var(--accent);transform:scaleX(0);transform-origin:0 50%;transition:transform .6s var(--ease)}
.card:hover .card__line i{transform:scaleX(1)}

/* FLIP 过渡（筛选动画） */
.card.is-flip{transition:transform .62s var(--ease)}
.card.is-hide{opacity:0;transform:scale(.94);pointer-events:none;transition:opacity .28s,transform .28s}
.card.is-show{animation:cardIn .62s var(--ease) both;animation-delay:var(--ad,0s)}
@keyframes cardIn{from{opacity:0;transform:translateY(22px) scale(.97)}to{opacity:1;transform:none}}

/* ==========================================================================
   团队
   ========================================================================== */
.team{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.tm__f{margin:0;border-radius:12px;overflow:hidden;background:var(--bg-3);aspect-ratio:3/4;position:relative}
.tm__f img{width:100%;height:100%;object-fit:cover;filter:grayscale(1);transition:filter .7s var(--ease),transform .9s var(--ease)}
.tm:hover .tm__f img{filter:none;transform:scale(1.04)}
.tm__f::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(8,10,14,.4),transparent 46%);
  opacity:0;transition:opacity .5s var(--ease)}
.tm:hover .tm__f::after{opacity:1}
.tm__b{padding-top:16px}
.tm__b h3{font-size:17px}
.tm__b p{font-size:13.5px;color:var(--ink-3);margin-top:3px}

/* ==========================================================================
   订阅
   ========================================================================== */
.sub{padding:64px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sub__in{display:flex;align-items:center;gap:56px;flex-wrap:wrap}
.sub__l{flex:1 1 320px}
.sub__l h3{font-size:22px}
.sub__l p{margin-top:8px;font-size:14.5px;color:var(--ink-3)}
.sub__f{flex:1 1 420px;position:relative}
.sub__f input{width:100%;height:54px;padding:0 150px 0 22px;border:1px solid var(--line);border-radius:999px;
  font:inherit;font-size:15px;background:var(--bg-2);transition:.3s var(--ease)}
.sub__f input:focus{outline:none;border-color:var(--ink);background:#fff}
.sub__f .btn{position:absolute;right:5px;top:5px;height:44px;padding:0 24px}
.form__msg{position:absolute;left:22px;bottom:-24px;font-size:12.5px;opacity:0;transition:opacity .3s}
.form__msg.is-on{opacity:1}
.form__msg.ok{color:#1F7A4D}
.form__msg.err{color:var(--accent)}

/* ==========================================================================
   联系我们
   ========================================================================== */
.contact{position:relative;background:var(--dark);padding:132px 0;overflow:hidden}
.contact__bg{position:absolute;inset:0;background:url(../img/misc/contact-band.jpg) center/cover no-repeat;
  opacity:.34;transform:scale(1.04)}
.contact::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(8,10,14,.94) 12%,rgba(8,10,14,.72) 62%,rgba(8,10,14,.88))}
.contact__in{position:relative;z-index:2;display:grid;grid-template-columns:.86fr 1.14fr;gap:76px;align-items:start}
.contact__list{margin-top:38px;display:flex;flex-direction:column;gap:26px}
.contact__list li{display:flex;gap:16px;align-items:flex-start}
.contact__list .ic{width:38px;height:38px;flex:0 0 38px;border-radius:10px;display:grid;place-items:center;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12)}
.contact__list .ic svg{width:18px;height:18px;color:#fff;opacity:.9}
.contact__list li>span:last-child{font-size:14.5px;color:rgba(255,255,255,.66);line-height:1.85}
.contact__list b{display:block;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin-bottom:3px;font-weight:600}
.contact__list a{color:rgba(255,255,255,.86);border-bottom:1px solid transparent;transition:.3s}
.contact__list a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.5)}

.contact__r h3{color:#fff;font-size:22px;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.14)}
.contact__r form{margin-top:30px}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.fi{position:relative;display:block;margin-bottom:26px}
.fi input,.fi textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid rgba(255,255,255,.2);
  color:#fff;font:inherit;font-size:15px;padding:12px 0 10px;transition:border-color .35s var(--ease);resize:none;
}
.fi textarea{height:110px;line-height:1.7}
.fi input:focus,.fi textarea:focus{outline:none;border-bottom-color:var(--accent)}
.fi span{
  position:absolute;left:0;top:12px;font-size:15px;color:rgba(255,255,255,.42);pointer-events:none;
  transition:.35s var(--ease);
}
.fi input:focus+span,.fi input:not(:placeholder-shown)+span,
.fi textarea:focus+span,.fi textarea:not(:placeholder-shown)+span{
  top:-8px;font-size:11.5px;color:var(--accent);letter-spacing:.14em;
}
.f__foot{display:flex;align-items:center;gap:20px;margin-top:8px}
.f__foot .form__msg{position:static;bottom:auto;left:auto}

/* ==========================================================================
   页脚 / 回顶
   ========================================================================== */
.ft{border-top:1px solid var(--line);padding:52px 0;background:#fff}
.ft__in{display:flex;align-items:center;gap:28px;flex-wrap:wrap;justify-content:space-between}
.ft__brand{display:flex;align-items:center;gap:14px}
.ft__brand .brand__logo{height:28px}
.ft__brand i{display:block;font-size:12px;color:var(--ink-3);line-height:1.5}
.ft__cr,.ft__icp{font-size:12.5px;color:var(--ink-3);line-height:1.7}

.totop{
  position:fixed;right:26px;bottom:26px;z-index:100;width:46px;height:46px;border-radius:50%;
  background:var(--ink);color:#fff;display:grid;place-items:center;
  opacity:0;transform:translateY(16px) scale(.9);pointer-events:none;
  transition:.45s var(--ease);box-shadow:0 14px 30px -14px rgba(17,20,24,.6);
}
.totop svg{width:19px;height:19px}
.totop.is-on{opacity:1;transform:none;pointer-events:auto}
.totop:hover{background:var(--accent)}

/* ==========================================================================
   灯箱
   ========================================================================== */
.lb{
  position:fixed;inset:0;z-index:300;background:rgba(8,10,14,.96);
  display:flex;align-items:center;justify-content:center;padding:5vh 6vw;
  opacity:0;transition:opacity .38s var(--ease);
}
.lb.is-on{opacity:1}
.lb__fig{margin:0;max-width:100%;max-height:100%;display:flex;flex-direction:column;align-items:center;gap:16px}
.lb__fig img{max-width:min(1400px,88vw);max-height:78vh;width:auto;height:auto;object-fit:contain;
  border-radius:6px;box-shadow:0 40px 90px -40px rgba(0,0,0,.9);
  transform:scale(.96);transition:transform .45s var(--ease),opacity .3s}
.lb.is-on .lb__fig img{transform:none}
.lb__fig figcaption{display:flex;align-items:center;gap:16px;font-size:13px;color:rgba(255,255,255,.7)}
.lb__fig figcaption em{font-size:12px;color:rgba(255,255,255,.4);letter-spacing:.1em;font-variant-numeric:tabular-nums}
.lb__x{position:absolute;top:22px;right:24px;width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.1);color:#fff;display:grid;place-items:center;transition:.3s var(--ease)}
.lb__x svg{width:19px;height:19px}
.lb__x:hover{background:rgba(255,255,255,.2);transform:rotate(90deg)}
.lb__nav{position:absolute;top:50%;transform:translateY(-50%);width:50px;height:50px;border-radius:50%;
  background:rgba(255,255,255,.09);color:#fff;display:grid;place-items:center;transition:.3s var(--ease)}
.lb__nav svg{width:22px;height:22px}
.lb__nav:hover{background:rgba(255,255,255,.2)}
.lb__nav--p{left:18px}
.lb__nav--n{right:18px}
.lb__nav[hidden]{display:none}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1200px){
  :root{--pad:28px}
  .about{gap:52px}
  .svc{grid-template-columns:repeat(2,1fr)}
  .grid{gap:34px 22px}
  .contact__in{gap:52px}
}
@media (max-width:992px){
  :root{--hdr:70px}
  .nav,.hdr__tel{display:none}
  .burger{display:block}
  .sec{padding:96px 0}
  .hero{padding-top:calc(var(--hdr) + 64px)}
  .about{grid-template-columns:1fr;gap:48px}
  .about__r figure:nth-child(2),.about__r figure:nth-child(4){transform:none}
  .grid{grid-template-columns:repeat(2,1fr)}
  .team{grid-template-columns:repeat(2,1fr);gap:22px}
  .sechd{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:40px}
  .sechd__note{text-align:left;padding-bottom:0}
  .contact{padding:96px 0}
  .contact__in{grid-template-columns:1fr;gap:52px}
  .marquee{margin-top:60px}
  .stats__in{grid-template-columns:repeat(3,1fr)}
  .stat:nth-child(4)::before{display:none}
  .stat{border-top:1px solid var(--line)}
  .stat:nth-child(-n+3){border-top:0}
  .stat+.stat::before{top:22%;bottom:22%}
}
@media (max-width:768px){
  :root{--pad:20px}
  .hero__quotes{min-height:calc(1.75em * 3)}
  .hero__quotes .q{font-size:15.5px}
  .btn{height:48px;padding:0 22px;font-size:14.5px}
  .svc{grid-template-columns:1fr}
  .f2{grid-template-columns:1fr;gap:0}
  .sub__in{gap:28px}
  .sub__f input{padding-right:22px;height:52px}
  .sub__f .btn{position:static;margin-top:12px;width:100%}
  .form__msg{position:static;left:auto;bottom:auto;margin-top:8px}
  .sub__f .form__msg{margin-top:10px}
  .ft__in{flex-direction:column;align-items:flex-start;gap:16px}
  .lb{padding:4vh 4vw}
  .lb__nav{width:42px;height:42px}
  .lb__nav--p{left:8px}.lb__nav--n{right:8px}
  .lb__x{top:12px;right:12px}
}
@media (max-width:560px){
  .brand__logo{height:29px}
  .ft__brand .brand__logo{height:25px}
  .grid{grid-template-columns:1fr;gap:32px}
  .stats__in{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3)::before,.stat:nth-child(5)::before{display:none}
  .stat:nth-child(3){border-top:1px solid var(--line)}
  .team{grid-template-columns:repeat(2,1fr)}
  .filters{border-radius:16px;width:100%;justify-content:flex-start}
  .chip{height:36px;padding:0 15px;font-size:13.5px}
  .marquee__row{animation-duration:46s}
  .mq__i{width:168px;flex-basis:168px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important}
  [data-reveal]{opacity:1;transform:none}
  .marquee__row{animation:none}
}