/* ============================================================
   18新利登录 · 共享站点样式 /assets/site.css
   深空基座 + 荧光绿信号 + 电子蓝信息 + 暖橙反馈
   ============================================================ */

/* ---------- 1. 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{margin:0}
ul,ol{list-style:none;padding:0}
img,svg,video,picture{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit}
table{border-collapse:collapse;width:100%}
[hidden]{display:none!important}

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#060A0F;
  --panel:#0D151D;
  --panel-2:#14232C;
  --line:#263A45;
  --line-soft:rgba(38,58,69,.62);
  --text:#E9F4F1;
  --muted:#94A9AE;
  --green:#7DFF8A;
  --blue:#3BB9FF;
  --orange:#FF9F4A;
  --moss:#4F7A63;
  --clay:#B86B4B;
  --ink-on-green:#06110A;

  --rail-w:88px;
  --shell:1320px;
  --gutter:clamp(16px,3vw,36px);
  --r-sm:4px;
  --r-md:10px;
  --shadow-1:0 1px 0 rgba(233,244,241,.04),0 18px 42px -30px rgba(0,0,0,.95);

  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:clamp(15px,.35vw + 13.6px,17px);
  line-height:1.7;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-weight:800;line-height:1.16;letter-spacing:-.022em;text-wrap:balance;color:var(--text)}
h1{font-size:clamp(32px,4.8vw,62px);line-height:1.04;letter-spacing:-.035em}
h2{font-size:clamp(24px,2.9vw,38px)}
h3{font-size:clamp(18px,1.5vw,22px);letter-spacing:-.012em}
p{max-width:72ch}
strong{font-weight:700;color:var(--text)}
code,kbd,samp{font-family:var(--font-mono);font-size:.92em;letter-spacing:0}
::selection{background:var(--green);color:var(--ink-on-green)}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:2px}
hr{border:0;border-top:1px solid var(--line);margin:clamp(24px,3vw,40px) 0}

/* ---------- 4. Skip link ---------- */
.skip-link{
  position:fixed;top:0;left:0;z-index:200;
  transform:translateY(-160%);
  padding:12px 22px;
  background:var(--green);color:var(--ink-on-green);
  font-size:14px;font-weight:700;text-decoration:none;letter-spacing:.04em;
  border-radius:0 0 var(--r-md) 0;
  transition:transform .22s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0);outline-offset:-3px}

/* ---------- 5. 左侧数据轨道 ---------- */
.rail{display:none}

.rail__inner{
  height:100%;
  display:flex;flex-direction:column;align-items:center;justify-content:space-between;
  gap:14px;padding:20px 0 22px;
}
.rail__brand{
  writing-mode:vertical-rl;text-orientation:mixed;
  font-family:var(--font-mono);font-size:11px;font-weight:700;
  letter-spacing:.34em;color:var(--muted);
  border-left:1px solid var(--line);padding-left:10px;
}
.rail__meter{
  position:relative;flex:1;width:2px;min-height:80px;margin:8px 0;
  background:var(--line);border-radius:2px;overflow:hidden;
}
.rail__bar{
  position:absolute;inset:0;
  background:linear-gradient(180deg,var(--green),var(--blue));
  transform:scaleY(0);transform-origin:bottom center;
  transition:transform .12s linear;
}
.rail__value{
  font-family:var(--font-mono);font-size:11px;font-weight:700;
  letter-spacing:.06em;color:var(--green);
}
.rail__links{display:grid;gap:8px;margin:0}
.rail__link{
  display:grid;place-items:center;
  width:40px;height:32px;
  font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.12em;
  color:var(--muted);text-decoration:none;
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:rgba(20,35,44,.55);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.rail__link:hover,.rail__link:focus-visible{
  color:var(--ink-on-green);background:var(--green);border-color:var(--green);
}

/* ---------- 6. 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(6,10,15,.94);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}

.utilbar{
  border-bottom:1px solid var(--line-soft);
  background:linear-gradient(90deg,rgba(79,122,99,.20),rgba(6,10,15,0) 58%);
}
.utilbar__inner{
  max-width:var(--shell);margin-inline:auto;
  padding-inline:var(--gutter);
  min-height:36px;
  display:flex;align-items:center;gap:18px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.07em;
  color:var(--muted);
}
.utilbar__brand{color:var(--text);white-space:nowrap;margin:0;font-weight:600}
.utilbar__aux{
  flex:1 1 auto;min-width:0;margin:0;
  padding-left:18px;border-left:1px solid var(--line);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.utilbar__dot{
  display:inline-block;width:6px;height:6px;margin-right:9px;
  border-radius:50%;background:var(--green);vertical-align:middle;
  box-shadow:0 0 0 3px rgba(125,255,138,.14);
  animation:signal 2.6s var(--ease) infinite;
}
.utilbar__contact{margin:0;color:var(--blue);white-space:nowrap}
@keyframes signal{0%,100%{opacity:1}50%{opacity:.32}}

.masthead__inner{
  max-width:var(--shell);margin-inline:auto;
  padding:0 var(--gutter);
  min-height:68px;
  display:flex;align-items:center;gap:clamp(14px,2vw,28px);
}

.brandmark{
  display:inline-flex;align-items:center;gap:12px;
  text-decoration:none;flex:0 0 auto;
}
.brandmark__glyph{
  display:grid;place-items:center;
  width:38px;height:38px;
  font-family:var(--font-mono);font-size:15px;font-weight:700;
  color:var(--green);background:rgba(125,255,138,.08);
  border:1px solid rgba(125,255,138,.42);border-radius:var(--r-sm);
  letter-spacing:-.02em;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.brandmark:hover .brandmark__glyph{background:var(--green);color:var(--ink-on-green)}
.brandmark__text{display:grid;gap:2px}
.brandmark__name{
  font-size:17px;font-weight:800;letter-spacing:.04em;line-height:1.1;color:var(--text);
}
.brandmark__tag{
  font-family:var(--font-mono);font-size:9.5px;font-weight:600;
  letter-spacing:.16em;color:var(--muted);line-height:1.2;
}

.nav{display:flex;align-items:center;gap:clamp(10px,1.6vw,26px);margin-inline-start:auto}
.nav__list{display:flex;flex-wrap:wrap;align-items:center;gap:2px;margin:0}
.nav__item{display:block}
.nav__link{
  position:relative;display:block;
  padding:10px 11px;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;letter-spacing:.02em;
  color:var(--muted);text-decoration:none;white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav__link:hover{color:var(--text);background:rgba(59,185,255,.10)}
.nav__link[aria-current="page"]{color:var(--text)}
.nav__link[aria-current="page"]::after{
  content:"";position:absolute;left:11px;right:11px;bottom:4px;height:2px;
  background:var(--green);border-radius:2px;
}
.nav__actions{display:flex;align-items:center;gap:10px;padding-left:clamp(8px,1.4vw,20px);border-left:1px solid var(--line)}

.navtoggle{
  display:none;align-items:center;gap:10px;margin-inline-start:auto;
  min-height:44px;padding:9px 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  color:var(--text);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.navtoggle:hover{border-color:var(--green);background:rgba(125,255,138,.08)}
.navtoggle__bars{display:grid;gap:4px;width:18px}
.navtoggle__bars span{
  display:block;height:2px;width:100%;background:currentColor;border-radius:2px;
  transition:transform .22s var(--ease),opacity .18s var(--ease);
}
.site-header[data-open] .navtoggle{border-color:var(--green);color:var(--green)}
.site-header[data-open] .navtoggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .navtoggle__bars span:nth-child(2){opacity:0}
.site-header[data-open] .navtoggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 7. 按钮 ---------- */
.btn{
  --btn-bg:transparent;
  --btn-fg:var(--text);
  --btn-bd:var(--line);
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 20px;
  font-size:14px;font-weight:600;line-height:1.1;letter-spacing:.03em;
  text-decoration:none;white-space:nowrap;
  color:var(--btn-fg);background:var(--btn-bg);
  border:1px solid var(--btn-bd);border-radius:var(--r-sm);
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--primary{
  --btn-bg:var(--green);--btn-fg:var(--ink-on-green);--btn-bd:var(--green);
  font-weight:700;
}
.btn--primary:hover{--btn-bg:#9BFFA8;--btn-bd:#9BFFA8}
.btn--ghost{--btn-bg:transparent;--btn-fg:var(--text);--btn-bd:var(--line)}
.btn--ghost:hover{--btn-fg:var(--blue);--btn-bd:var(--blue);background:rgba(59,185,255,.10)}
.btn--quiet{--btn-fg:var(--muted);--btn-bd:transparent;padding-inline:10px}
.btn--quiet:hover{--btn-fg:var(--text);background:rgba(233,244,241,.06)}
.btn--block{width:100%}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  margin-top:clamp(48px,8vw,110px);
  border-top:1px solid var(--line);
  background:
    radial-gradient(120% 90% at 6% 0%,rgba(79,122,99,.22),transparent 62%),
    radial-gradient(90% 70% at 96% 10%,rgba(59,185,255,.10),transparent 60%),
    linear-gradient(180deg,#0A1219,#060A0F 72%);
  color:var(--muted);
}
.footer__inner{
  max-width:var(--shell);margin-inline:auto;
  padding:clamp(36px,5vw,68px) var(--gutter) clamp(26px,4vw,46px);
  display:grid;gap:clamp(24px,3.4vw,52px);
  grid-template-columns:minmax(0,1.15fr) minmax(0,1.9fr) minmax(0,1.05fr);
  align-items:start;
}
.footer__mast{display:grid;gap:14px}
.footer__brand{
  font-size:clamp(19px,1.8vw,24px);font-weight:800;letter-spacing:.02em;
  color:var(--text);line-height:1.2;margin:0;max-width:none;
}
.footer__summary{
  margin:0;max-width:46ch;
  font-size:14px;line-height:1.85;color:var(--muted);
}
.footer__cols{
  display:grid;gap:clamp(16px,2.2vw,34px);
  grid-template-columns:repeat(3,minmax(0,1fr));
}
.footer__col{display:grid;gap:12px;align-content:start}
.footer__coltitle{
  margin:0;max-width:none;
  font-family:var(--font-mono);font-size:11px;font-weight:700;
  letter-spacing:.16em;color:var(--green);
  padding-bottom:9px;border-bottom:1px solid var(--line);
}
.footer__list{display:grid;gap:9px;margin:0}
.footer__list li{font-size:14px;line-height:1.6}
.footer__list a{
  color:var(--text);opacity:.82;text-decoration:none;
  transition:color .18s var(--ease),opacity .18s var(--ease);
}
.footer__list a:hover,.footer__list a:focus-visible{opacity:1;color:var(--green)}
.footer__key{
  display:inline-block;min-width:38px;margin-right:10px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;
  color:var(--muted);vertical-align:1px;
}
.footer__contact{display:grid;gap:12px;align-content:start}
.footer__note{
  margin:0;max-width:none;
  font-size:12.5px;line-height:1.8;color:var(--moss);
  padding-left:12px;border-left:1px solid var(--line);
}
.footer__base{
  max-width:var(--shell);margin-inline:auto;
  padding:16px var(--gutter) 30px;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 26px;
  border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.07em;color:var(--muted);
}
.footer__legal{margin:0;max-width:none}
.footer__icp{margin:0;max-width:none;color:var(--clay)}
.footer__totop{
  margin-inline-start:auto;color:var(--green);text-decoration:none;
  padding:4px 2px;border-bottom:1px solid transparent;
  transition:border-color .18s var(--ease);
}
.footer__totop:hover{border-bottom-color:var(--green)}

/* ---------- 9. 布局基座 ---------- */
.shell{
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(34px,5.5vw,84px)}
.section + .section{border-top:1px solid var(--line-soft)}
.section__head{display:grid;gap:12px;margin-bottom:clamp(20px,3vw,38px);max-width:64ch}
.grid{display:grid;gap:clamp(16px,2.2vw,28px)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.stack{display:grid;gap:16px;align-content:start}
.eyebrow{
  margin:0;max-width:none;
  font-family:var(--font-mono);font-size:11px;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;color:var(--green);
}
.lede{
  margin:0;font-size:clamp(16px,1.2vw,19px);line-height:1.75;
  color:var(--muted);max-width:58ch;
}

/* ---------- 10. 面板与数据组件 ---------- */
.panel{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:clamp(16px,2vw,26px);
  box-shadow:var(--shadow-1);
}
.panel--raised{
  background:linear-gradient(160deg,var(--panel-2),var(--panel) 78%);
}
.panel--raised::before{
  content:"";position:absolute;top:0;left:0;width:52px;height:2px;
  background:linear-gradient(90deg,var(--green),transparent);
  border-radius:var(--r-md) 0 0 0;
}
.callout{
  padding:16px 18px;
  background:rgba(255,159,74,.08);
  border:1px solid rgba(255,159,74,.28);
  border-left:3px solid var(--orange);
  border-radius:var(--r-sm);
  font-size:14px;line-height:1.75;color:var(--text);
}
.callout p{max-width:none;margin:0}
.tag{
  display:inline-block;
  font-family:var(--font-mono);font-size:10.5px;font-weight:700;
  letter-spacing:.14em;color:var(--blue);
  padding:3px 8px;border:1px solid rgba(59,185,255,.4);border-radius:var(--r-sm);
  background:rgba(59,185,255,.08);
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--text);background:var(--panel-2);border:1px solid var(--line);
}
.chip::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--green)}
.stat{display:grid;gap:6px}
.stat__value{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(24px,3vw,46px);line-height:1;letter-spacing:-.02em;color:var(--green);
}
.stat__label{
  font-size:12.5px;letter-spacing:.06em;color:var(--muted);
}
.meter{
  position:relative;height:6px;width:100%;
  background:var(--panel-2);border-radius:999px;overflow:hidden;
  border:1px solid var(--line-soft);
}
.meter__bar{
  display:block;height:100%;
  width:calc(var(--v,.5) * 100%);
  background:linear-gradient(90deg,var(--blue),var(--green));
  border-radius:999px;
  transition:width .5s var(--ease);
}

/* ---------- 11. 表格 ---------- */
.table-scroll{
  overflow-x:auto;overflow-y:hidden;
  border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--panel);
  -webkit-overflow-scrolling:touch;
}
.data-table{min-width:560px;font-size:14px}
.data-table caption{
  padding:14px 16px;text-align:left;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--muted);border-bottom:1px solid var(--line);
}
.data-table th,.data-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line-soft)}
.data-table thead th{
  background:var(--panel-2);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--muted);font-weight:700;white-space:nowrap;
}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table tbody tr:hover{background:rgba(59,185,255,.06)}
.data-table td{color:var(--text)}

/* ---------- 12. 图片容器基础规则 ---------- */
.media{display:block;margin:0;position:relative}
.media__frame{
  position:relative;overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--line);border-radius:var(--r-md);
  background:
    radial-gradient(80% 70% at 18% 12%,rgba(59,185,255,.14),transparent 60%),
    linear-gradient(150deg,var(--panel-2),var(--panel) 82%);
}
.media__frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(38,58,69,.5) 1px,transparent 1px),
    linear-gradient(90deg,rgba(38,58,69,.5) 1px,transparent 1px);
  background-size:34px 34px;
  opacity:.55;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
}
.media__frame > img,
.media__frame > svg,
.media__frame > picture,
.media__frame > picture > img{
  position:relative;z-index:1;
  width:100%;height:100%;object-fit:cover;
}
.media__cap{
  margin-top:10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.07em;
  color:var(--muted);
}
.media--wide .media__frame{aspect-ratio:21/9}
.media--tall .media__frame{aspect-ratio:3/4}

/* ---------- 13. 面包屑 ---------- */
.breadcrumbs{padding-block:14px}
.breadcrumbs__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:0;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:var(--muted);
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs__item + .breadcrumbs__item::before{content:"/";color:var(--line)}
.breadcrumbs__item a{color:var(--muted);text-decoration:none;transition:color .18s var(--ease)}
.breadcrumbs__item a:hover{color:var(--green)}
.breadcrumbs__item[aria-current="page"]{color:var(--text)}

/* ---------- 14. 标签页外壳 ---------- */
.tabs{display:grid;gap:clamp(14px,2vw,22px)}
.tabs__list{
  display:flex;flex-wrap:wrap;gap:4px;
  padding:4px;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--panel);
  overflow-x:auto;
}
.tabs__tab{
  padding:10px 16px;border-radius:var(--r-sm);
  font-size:13.5px;font-weight:600;letter-spacing:.02em;
  color:var(--muted);white-space:nowrap;
  border:1px solid transparent;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.tabs__tab:hover{color:var(--text);background:rgba(59,185,255,.10)}
.tabs__tab[aria-selected="true"]{
  color:var(--ink-on-green);background:var(--green);border-color:var(--green);
  font-weight:700;
}
.tabs__panel{outline:none}
.tabs__panel:focus-visible{outline:2px solid var(--blue);outline-offset:4px}

/* ---------- 15. 响应式 ---------- */
@media (min-width:1100px){
  body{padding-inline-start:var(--rail-w)}
  .rail{
    display:block;position:fixed;
    inset-block:0;inset-inline-start:0;width:var(--rail-w);
    background:linear-gradient(180deg,#0A1219,var(--ink) 42%);
    border-right:1px solid var(--line);
    z-index:70;
  }
}

@media (max-width:1180px){
  .utilbar__contact{display:none}
}

@media (max-width:1024px){
  .footer__inner{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .footer__contact{grid-column:1 / -1}
  .utilbar__aux{display:none}
}

@media (max-width:899px){
  .masthead__inner{min-height:60px}
  .navtoggle{display:inline-flex}

  .nav{
    position:fixed;
    inset-inline:0;bottom:0;
    display:grid;gap:0;
    margin:0;
    max-height:84vh;overflow-y:auto;
    padding:16px var(--gutter) calc(18px + env(safe-area-inset-bottom));
    background:rgba(13,21,29,.985);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border-top:1px solid var(--line);
    box-shadow:0 -22px 60px -30px rgba(0,0,0,.95);
    transform:translateY(103%);
    opacity:0;visibility:hidden;
    transition:transform .32s var(--ease),opacity .22s var(--ease),visibility 0s linear .32s;
    z-index:60;
  }
  .site-header[data-open] .nav{
    transform:translateY(0);
    opacity:1;visibility:visible;
    transition:transform .32s var(--ease),opacity .22s var(--ease),visibility 0s;
  }
  .nav__list{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .nav__link{
    padding:15px 6px;font-size:16px;
    border-bottom:1px solid var(--line-soft);border-radius:0;
  }
  .nav__link[aria-current="page"]::after{left:6px;right:auto;width:26px;bottom:8px}
  .nav__actions{
    display:grid;gap:10px;width:100%;
    padding:16px 0 0;border-left:0;border-top:1px solid var(--line);
    margin-top:4px;
  }
  .nav__actions .btn{width:100%}

  body.nav-open{overflow:hidden}
}

@media (max-width:720px){
  .footer__inner{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer__cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
  .footer__contact{grid-column:auto}
  .footer__base{flex-direction:column;align-items:flex-start;gap:8px}
  .footer__totop{margin-inline-start:0}
  .brandmark__tag{display:none}
  .utilbar__inner{min-height:32px;font-size:10.5px}
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
}

@media (max-width:420px){
  .footer__cols{grid-template-columns:minmax(0,1fr)}
  .navtoggle__label{display:none}
}

/* ---------- 16. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .btn:hover{transform:none}
  .utilbar__dot{animation:none}
}