/* ===========================================================
   优乐电子 · 型号档案站  /assets/site.css
   共享样式：reset / tokens / 中文排版 / 页头 / 页脚 / 基础组件
   =========================================================== */

/* ---------- 1. tokens ---------- */
:root{
  --deep:#0B1B33;
  --night:#12294A;
  --orbit:#1E4B8F;
  --cyan:#00C2C7;
  --cyan-soft:rgba(0,194,199,.14);
  --orange:#FF7A2F;
  --green:#2FA36B;
  --metal:#8C97A8;
  --mist:#F4F7FB;
  --paper:#FAFBFD;
  --carbon:#0A0F18;

  --text-mid:#3D4658;
  --text-soft:#5C6675;

  --line:rgba(140,151,168,.32);
  --line-soft:rgba(140,151,168,.18);
  --line-dark:rgba(140,151,168,.28);

  --rail-top-h:72px;
  --rail-side-w:92px;

  --font-head:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-edit:"Songti SC","STSong","SimSun","Noto Serif SC",Georgia,serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --ease:cubic-bezier(.2,.7,.2,1);
  --wrap:1240px;
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,dl,dd,figure,blockquote,hr{margin:0}
ul,ol{padding:0;list-style:none}
img,picture,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
hr{border:0}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

/* ---------- 3. 中文排版基线 ---------- */
body{
  font-family:var(--font-body);
  font-size:16.5px;
  line-height:1.75;
  color:var(--carbon);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.2;
  color:var(--deep);
}
p{text-wrap:pretty}
p + p{margin-top:1.2em}

/* ---------- 4. 页面外框 ---------- */
main{
  display:block;
  padding-top:var(--rail-top-h);
  padding-left:var(--rail-side-w);
}

.skip-link{
  position:fixed;
  top:8px;left:8px;
  z-index:200;
  transform:translateY(-160%);
  padding:10px 16px;
  background:var(--cyan);
  color:var(--deep);
  font-size:14px;
  font-weight:700;
  border:1px solid var(--deep);
  transition:transform 200ms var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 5. 页头：顶部轨道 ---------- */
.site-header{position:relative;z-index:80}

.rail-top{
  position:fixed;
  top:0;
  left:var(--rail-side-w);
  right:0;
  height:var(--rail-top-h);
  z-index:60;
  background:rgba(11,27,51,.82);
  -webkit-backdrop-filter:blur(12px) saturate(150%);
  backdrop-filter:blur(12px) saturate(150%);
  border-bottom:1px solid var(--line-dark);
  transition:height 260ms var(--ease),background-color 260ms var(--ease);
}
.rail-top__inner{
  height:100%;
  display:flex;
  align-items:center;
  gap:clamp(12px,1.8vw,26px);
  padding:0 clamp(14px,2.4vw,36px);
}
[data-scrolled] .rail-top{
  height:58px;
  background:rgba(11,27,51,.94);
}

.brand{
  display:flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
  color:var(--mist);
}
.brand__mark{
  width:34px;height:34px;
  flex:0 0 34px;
  display:grid;place-items:center;
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--deep);
  background:var(--cyan);
  border:1px solid var(--cyan);
  box-shadow:0 0 0 4px rgba(0,194,199,.12);
}
.brand__text{display:flex;flex-direction:column;line-height:1.2}
.brand__name{font-family:var(--font-head);font-size:17px;font-weight:900;letter-spacing:-.01em}
.brand__sub{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.2em;
  color:rgba(244,247,251,.58);
}

.rail-top__tagline{
  font-size:13.5px;
  color:rgba(244,247,251,.66);
  padding-left:14px;
  border-left:1px solid var(--line-dark);
  white-space:nowrap;
}
.rail-top__status{
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--cyan);
  white-space:nowrap;
}
.rail-top__status::before{
  content:"";
  width:6px;height:6px;
  margin-right:8px;
  background:var(--cyan);
  box-shadow:0 0 8px var(--cyan);
  animation:pulse 2.6s var(--ease) infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.35;transform:scale(.82)}
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 18px;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  line-height:1.2;
  border:1px solid transparent;
  border-radius:2px;
  white-space:nowrap;
  transition:background-color 200ms var(--ease),color 200ms var(--ease),
             border-color 200ms var(--ease),transform 200ms var(--ease);
}
.btn--cta{background:var(--cyan);color:var(--deep);border-color:var(--cyan)}
.btn--cta:hover{background:#22DCE0;border-color:#22DCE0}
.btn--ghost{background:transparent;color:var(--mist);border-color:rgba(140,151,168,.5)}
.btn--ghost:hover{border-color:var(--cyan);color:#FFFFFF}
.btn:active{transform:translateY(1px)}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:8px 12px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--mist);
  border:1px solid rgba(140,151,168,.45);
  border-radius:2px;
  transition:border-color 200ms var(--ease),color 200ms var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;height:2px;
  background:currentColor;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;left:0;
  width:16px;height:2px;
  background:currentColor;
  transition:transform 220ms var(--ease);
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}

.rail-top__progress{
  position:absolute;
  left:0;bottom:-1px;
  width:100%;height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  transition:transform 90ms linear;
  pointer-events:none;
}

/* ---------- 6. 页头：左侧索引轨道 ---------- */
.rail-side{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--rail-side-w);
  z-index:70;
  display:flex;
  flex-direction:column;
  padding:16px 0 14px;
  background:linear-gradient(180deg,var(--night) 0%,var(--deep) 58%,#071324 100%);
  border-right:1px solid var(--line-dark);
  transition:width 260ms var(--ease);
}
.rail-side__label{
  margin:0 12px 12px;
  padding-bottom:12px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.28em;
  text-align:center;
  color:rgba(244,247,251,.42);
  border-bottom:1px solid var(--line-soft);
}
.rail-side__list{
  display:flex;
  flex-direction:column;
  gap:2px;
  padding:0 6px;
}
.rail-side__list a{
  display:block;
  padding:12px 4px;
  font-size:13px;
  letter-spacing:.08em;
  text-align:center;
  color:rgba(244,247,251,.7);
  border-left:3px solid transparent;
  transition:color 180ms var(--ease),background-color 180ms var(--ease),
             border-color 180ms var(--ease);
}
.rail-side__list a:hover{
  color:#FFFFFF;
  background:rgba(0,194,199,.1);
  border-left-color:rgba(0,194,199,.55);
}
.rail-side__list a[aria-current="page"]{
  color:var(--cyan);
  background:var(--cyan-soft);
  border-left-color:var(--cyan);
}
.rail-side__foot{
  margin:auto 10px 0;
  padding-top:12px;
  font-family:var(--font-mono);
  font-size:10px;
  line-height:1.7;
  letter-spacing:.14em;
  text-align:center;
  color:rgba(244,247,251,.4);
  border-top:1px solid var(--line-soft);
}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  margin-left:calc(-1 * var(--rail-side-w));
  padding-left:var(--rail-side-w);
  background:linear-gradient(180deg,var(--deep) 0%,#071324 100%);
  color:var(--mist);
  border-top:1px solid rgba(0,194,199,.35);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(140,151,168,.09) 1px,transparent 1px),
    linear-gradient(90deg,rgba(140,151,168,.09) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 72%);
  pointer-events:none;
}
.site-footer .container{position:relative}

.footer-grid{
  display:grid;
  grid-template-columns:1.15fr 1.5fr 1fr;
  gap:clamp(26px,4vw,56px);
  padding-block:clamp(40px,6vw,74px) clamp(28px,4vw,48px);
}
.footer-brand__name{
  font-family:var(--font-head);
  font-size:20px;
  font-weight:900;
  letter-spacing:-.01em;
  color:#FFFFFF;
}
.footer-brand__suffix{
  display:inline-block;
  margin-left:10px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.18em;
  color:var(--cyan);
}
.footer-brand__line{
  margin-top:12px;
  font-size:14px;
  line-height:1.7;
  color:rgba(244,247,251,.62);
  max-width:34ch;
}
.footer-metrics{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  margin-top:22px;
  padding-top:18px;
  border-top:1px solid var(--line-soft);
}
.footer-metrics li{display:flex;flex-direction:column;gap:2px}
.footer-metrics .data{
  font-family:var(--font-mono);
  font-size:19px;
  font-weight:700;
  color:var(--cyan);
  letter-spacing:.02em;
}
.footer-metrics em{
  font-style:normal;
  font-size:11.5px;
  letter-spacing:.08em;
  color:rgba(244,247,251,.5);
}

.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,2.4vw,32px);
}
.footer-col__title{
  font-family:var(--font-edit);
  font-size:13px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--orange);
  padding-bottom:10px;
  border-bottom:1px solid var(--line-soft);
}
.footer-col__list{margin-top:12px;display:flex;flex-direction:column;gap:2px}
.footer-col__list a{
  display:inline-block;
  padding:4px 0;
  font-size:14px;
  color:rgba(244,247,251,.72);
  border-bottom:1px solid transparent;
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.footer-col__list a:hover,
.footer-col__list a[aria-current="page"]{
  color:#FFFFFF;
  border-bottom-color:var(--cyan);
}

.footer-contact__list{margin-top:12px;display:flex;flex-direction:column;gap:10px}
.footer-contact__row{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
}
.footer-contact__row--wide{align-items:flex-start}
.footer-contact__key{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:rgba(244,247,251,.44);
}
.footer-contact__val{
  font-size:13.5px;
  color:rgba(244,247,251,.88);
  word-break:break-all;
}
.copy-btn{
  flex:0 0 auto;
  padding:3px 9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:rgba(244,247,251,.66);
  border:1px solid rgba(140,151,168,.4);
  border-radius:2px;
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.copy-btn:hover{color:var(--cyan);border-color:var(--cyan)}
.copy-btn.is-copied{color:var(--deep);background:var(--cyan);border-color:var(--cyan)}
.footer-contact__note{
  margin-top:14px;
  padding-top:12px;
  font-size:12.5px;
  line-height:1.7;
  color:rgba(244,247,251,.48);
  border-top:1px solid var(--line-soft);
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  align-items:center;
  justify-content:space-between;
  padding-block:18px 26px;
  border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:rgba(244,247,251,.5);
}
.footer-icp{color:rgba(244,247,251,.66)}

/* ---------- 8. 容器与栅格 ---------- */
.container{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:clamp(18px,4vw,56px);
}
.container--wide{max-width:1480px}
.container--narrow{max-width:860px}

.section{padding-block:clamp(46px,7vw,104px)}
.section--tight{padding-block:clamp(26px,4vw,54px)}

.grid{display:grid;gap:clamp(16px,2.2vw,32px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid--5-7{grid-template-columns:5fr 7fr}
.grid--7-5{grid-template-columns:7fr 5fr}
.grid--8-4{grid-template-columns:8fr 4fr}

/* ---------- 9. 文本组件 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-edit);
  font-size:14px;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--orbit);
}
.eyebrow::before{
  content:"";
  width:18px;height:1px;
  background:var(--orange);
}
.section-title{
  font-family:var(--font-head);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.15;
  font-size:clamp(28px,3.4vw,40px);
  color:var(--deep);
}
.section-title--lg{font-size:clamp(34px,4.6vw,56px)}
.lede{
  font-size:17px;
  line-height:1.75;
  color:var(--text-mid);
  max-width:62ch;
}
.rule{
  height:1px;
  background:linear-gradient(90deg,var(--cyan),rgba(0,194,199,0) 72%);
}

/* ---------- 10. 材质层 ---------- */
.glass{
  --glass-bg:rgba(18,41,74,.72);
  --glass-fg:var(--mist);
  --glass-line:rgba(140,151,168,.3);
  background:var(--glass-bg);
  color:var(--glass-fg);
  border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
}
.glass--light{
  --glass-bg:rgba(250,251,253,.74);
  --glass-fg:var(--carbon);
  --glass-line:rgba(140,151,168,.4);
}
.panel{
  padding:clamp(18px,2.4vw,28px);
  background:var(--paper);
  border:1px solid var(--line);
}
.panel--mist{background:var(--mist)}
.panel--dark{
  background:var(--deep);
  color:var(--mist);
  border-color:var(--line-dark);
}
.panel--dark .section-title,
.panel--dark h1,
.panel--dark h2,
.panel--dark h3{color:var(--mist)}

/* ---------- 11. 数据与状态 ---------- */
.data{
  font-family:var(--font-mono);
  font-size:.94em;
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}
.data-block{
  display:inline-block;
  padding:10px 14px;
  background:var(--paper);
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:14px;
  letter-spacing:.02em;
  color:var(--deep);
}
.big-number{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(38px,6vw,72px);
  line-height:1;
  letter-spacing:-.01em;
  color:var(--deep);
  font-variant-numeric:tabular-nums;
}
.big-number--cyan{color:var(--cyan)}
.number-note{
  display:block;
  margin-top:8px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--metal);
}

.status{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:3px 9px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--s,#5C6675);
  border:1px solid var(--s-border,rgba(92,102,117,.45));
  border-radius:2px;
  white-space:nowrap;
}
.status::before{
  content:"";
  width:6px;height:6px;
  flex:0 0 6px;
  background:var(--s,#5C6675);
}
.status--stock{--s:#1E7A4E;--s-border:rgba(47,163,107,.55)}
.status--cert{--s:#1E7A4E;--s-border:rgba(47,163,107,.55)}
.status--schedule{--s:#C2530F;--s-border:rgba(255,122,47,.55)}
.status--signal{--s:#0E7C80;--s-border:rgba(0,194,199,.55)}
.status--idle{--s:#5C6675;--s-border:rgba(140,151,168,.5)}
.panel--dark .status--idle{--s:#9AA5B5;--s-border:rgba(154,165,181,.5)}

.tag{
  display:inline-block;
  padding:4px 10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.05em;
  color:var(--text-mid);
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:2px;
}
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}

/* ---------- 12. 面包屑 ---------- */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--metal);
}
.breadcrumbs a{
  color:var(--metal);
  border-bottom:1px solid transparent;
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.breadcrumbs a:hover{color:var(--orbit);border-bottom-color:var(--orbit)}
.breadcrumbs__sep{opacity:.6}
.breadcrumbs [aria-current="page"]{color:var(--deep)}

/* ---------- 13. 图片容器 ---------- */
.figure-frame{margin:0}
.figure-frame__media{
  position:relative;
  overflow:hidden;
  background:linear-gradient(140deg,var(--night),var(--deep));
  border:1px solid var(--line);
}
.figure-frame__media img{
  width:100%;height:100%;
  object-fit:cover;
}
.figure-frame__media::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(140,151,168,.14) 1px,transparent 1px),
    linear-gradient(90deg,rgba(140,151,168,.14) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
.figure-frame__media:has(img)::after{display:none}
.figure-frame--16x9 .figure-frame__media{aspect-ratio:16/9}
.figure-frame--4x3 .figure-frame__media{aspect-ratio:4/3}
.figure-frame--3x2 .figure-frame__media{aspect-ratio:3/2}
.figure-frame--1x1 .figure-frame__media{aspect-ratio:1/1}
.figure-frame figcaption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--metal);
}

/* ---------- 14. 主题筛选协议 ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.filter-btn{
  padding:6px 13px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--text-mid);
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:2px;
  transition:color 200ms var(--ease),background-color 200ms var(--ease),
             border-color 200ms var(--ease);
}
.filter-btn:hover{border-color:var(--cyan);color:var(--deep)}
.filter-btn[aria-pressed="true"]{
  background:var(--deep);
  border-color:var(--deep);
  color:var(--mist);
}
[data-filter-target]{
  transition:opacity 240ms var(--ease),filter 240ms var(--ease);
}
[data-filter-target].is-muted{
  opacity:.2;
  filter:saturate(.2);
}

/* ---------- 15. 显现 ---------- */
html[data-reveal-ready] [data-reveal]{
  opacity:0;
  transform:translateY(10px);
  transition:opacity 300ms var(--ease),transform 300ms var(--ease);
  transition-delay:var(--reveal-delay,0ms);
}
html[data-reveal-ready] [data-reveal].is-revealed{
  opacity:1;
  transform:none;
}

/* ---------- 16. 响应式 ---------- */
@media (max-width:1280px){
  .rail-top__tagline{display:none}
}
@media (max-width:1024px){
  :root{--rail-side-w:0px;--rail-top-h:58px}

  .nav-toggle{display:inline-flex}

  .rail-side{
    width:min(80vw,300px);
    transform:translateX(-102%);
    visibility:hidden;
    box-shadow:8px 0 32px rgba(7,19,36,.5);
    transition:transform 280ms var(--ease),visibility 280ms var(--ease);
  }
  .rail-side[data-open]{
    transform:none;
    visibility:visible;
  }
  .rail-side__list a{text-align:left;padding:13px 18px}

  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
  .footer-contact{grid-column:1 / -1}
  .grid--5-7,.grid--7-5,.grid--8-4{grid-template-columns:1fr}
}
@media (max-width:900px){
  .rail-top__status{display:none}
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:680px){
  body{font-size:16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr 1fr}
  .footer-bottom{justify-content:flex-start}
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .brand__sub{display:none}
}

/* ---------- 17. 动效与可访问性降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .rail-top__status::before{animation:none;opacity:1}
  html[data-reveal-ready] [data-reveal]{
    opacity:1;
    transform:none;
  }
  .rail-top__progress{transition:none}
}