/* ==========================================================================
   信誉主站 · xbet 产品档案 —— 共享外壳样式 /assets/site.css
   ========================================================================== */

:root{
  --abyss:#0A1120;
  --hull:#111C2F;
  --line:#24344C;
  --cyan:#25E0C4;
  --amber:#F2B33D;
  --mist:#E9EFF7;
  --slate:#8FA3BC;
  --coral:#FF6E5A;
  --indigo:#6C6BFF;

  --bg:var(--abyss);
  --surface:var(--hull);
  --border:var(--line);
  --text:var(--mist);
  --muted:var(--slate);
  --accent:var(--cyan);
  --accent-alt:var(--amber);

  --shell-max:1280px;
  --gutter:clamp(18px,4vw,40px);
  --radius:14px;
  --radius-sm:10px;
  --header-h:76px;

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

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

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img,svg,video{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{background:none;border:0;padding:0;color:inherit;font:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
::selection{background:rgba(37,224,196,.3);color:#ffffff;}
#main-content{scroll-margin-top:calc(var(--header-h) + 16px);}

/* ---------- 容器 ---------- */
.shell{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  left:12px;
  top:-72px;
  z-index:200;
  padding:10px 18px;
  border-radius:0 0 10px 10px;
  background:var(--cyan);
  color:#04141A;
  font-size:14px;
  font-weight:800;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:0;}

/* ==========================================================================
   头部
   ========================================================================== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .35s var(--ease),border-color .35s var(--ease),box-shadow .35s var(--ease),backdrop-filter .35s var(--ease);
}
.site-header[data-scrolled="true"],
.site-header[data-nav-open="true"]{
  background:rgba(9,15,27,.94);
  border-bottom-color:var(--line);
  box-shadow:0 18px 44px -30px rgba(0,0,0,.95);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}

.header-inner{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,26px);
  min-height:var(--header-h);
}

/* 品牌 */
.brand{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:11px;
  padding:4px 0;
}
.brand-mark{
  display:grid;
  place-items:center;
  width:40px;height:40px;
  border:1px solid rgba(37,224,196,.45);
  border-radius:11px;
  background:linear-gradient(150deg,rgba(37,224,196,.16),rgba(37,224,196,.02));
  font-family:var(--font-mono);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--cyan);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.brand:hover .brand-mark{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(37,224,196,.13);}
.brand-text{display:block;}
.brand-name{
  display:block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:17px;
  line-height:1.15;
  letter-spacing:.01em;
  color:var(--mist);
}
.brand-suffix{
  display:block;
  font-family:var(--font-mono);
  font-size:10.5px;
  line-height:1.45;
  letter-spacing:.14em;
  color:var(--muted);
}

/* 导航 */
.site-nav{
  flex:1 1 auto;
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:6px;
}
.nav-list{display:flex;align-items:center;gap:2px;counter-reset:navlink;}
.nav-item{flex:0 0 auto;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:9px 12px;
  border-radius:9px;
  font-size:14.5px;
  font-weight:500;
  color:rgba(233,239,247,.76);
  transition:color .22s var(--ease),background-color .22s var(--ease);
}
.nav-link::before{
  counter-increment:navlink;
  content:counter(navlink,decimal-leading-zero);
  margin-right:7px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.08em;
  color:var(--muted);
  opacity:.75;
  transition:color .22s var(--ease),opacity .22s var(--ease);
}
.nav-link:hover{color:var(--mist);background:rgba(37,224,196,.09);}
.nav-link:hover::before{color:var(--cyan);opacity:1;}
.nav-link[aria-current="page"]{color:var(--cyan);}
.nav-link[aria-current="page"]::before{color:var(--cyan);opacity:1;}
.nav-link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:3px;
  height:1px;
  background:var(--cyan);
}

/* 移动抽屉底部区（桌面隐藏） */
.nav-foot{display:none;}

/* 头部右侧 */
.header-side{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:14px;
}
.status-strip{
  display:flex;
  align-items:center;
  gap:14px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.05em;
  color:var(--muted);
  white-space:nowrap;
}
.status-strip li{position:relative;padding-left:11px;}
.status-strip li::before{
  content:"";
  position:absolute;
  left:0;top:.55em;
  width:4px;height:4px;
  border-radius:50%;
  background:var(--cyan);
  opacity:.8;
}
.header-cta{white-space:nowrap;}
.header-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:34px;
  padding:5px 8px;
  border:1px solid var(--line);
  border-radius:8px;
  background:rgba(17,28,47,.62);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--cyan);
}

/* 折叠按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 13px;
  border:1px solid var(--line);
  border-radius:10px;
  background:rgba(17,28,47,.72);
  color:var(--mist);
  font-size:13px;
  transition:border-color .25s var(--ease),color .25s var(--ease);
}
.nav-toggle-bars{display:grid;gap:4px;width:16px;}
.nav-toggle-bars i{
  display:block;
  height:1.5px;
  border-radius:2px;
  background:var(--cyan);
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.nav-toggle-text{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

/* 滚动进度 */
.header-progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  background:rgba(36,52,76,.45);
}
.header-progress > span{
  display:block;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--indigo) 55%,var(--amber));
}

/* ==========================================================================
   通用组件
   ========================================================================== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border:1px solid transparent;
  border-radius:999px;
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.2;
  transition:transform .2s var(--ease),background-color .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.btn--primary{background:var(--amber);color:#1A1200;}
.btn--primary:hover{background:#FFC65B;transform:translateY(-1px);}
.btn--ghost{
  border-color:var(--line);
  background:rgba(233,239,247,.02);
  color:var(--text);
}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);}
.btn--block{width:100%;}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border:1px solid var(--line);
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--muted);
  white-space:nowrap;
}
.tag--ok{color:var(--cyan);border-color:rgba(37,224,196,.4);background:rgba(37,224,196,.08);}
.tag--warn{color:var(--amber);border-color:rgba(242,179,61,.42);background:rgba(242,179,61,.08);}
.tag--alert{color:var(--coral);border-color:rgba(255,110,90,.45);background:rgba(255,110,90,.08);}

.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0 10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--muted);
}
.crumb li{display:inline-flex;align-items:center;gap:10px;}
.crumb li + li::before{content:"/";color:var(--line);}
.crumb a{color:var(--muted);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--cyan);}
.crumb [aria-current="page"]{color:var(--mist);}

.section{
  position:relative;
  padding:clamp(52px,7vw,104px) 0;
  border-top:1px solid var(--line);
}
.section-head{
  display:flex;
  align-items:flex-start;
  gap:clamp(14px,2vw,22px);
  margin-bottom:clamp(22px,3vw,40px);
}
.section-index{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:46px;
  margin-top:6px;
  padding:6px 10px;
  border:1px solid var(--line);
  border-radius:9px;
  background:rgba(37,224,196,.06);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--cyan);
}
.section-title{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.16;
  letter-spacing:-.01em;
  color:var(--mist);
}
.section-note{
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
}

.panel{
  position:relative;
  padding:clamp(18px,2.2vw,28px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(17,28,47,.94),rgba(13,22,38,.94));
  transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.panel:hover,.panel:focus-within{
  border-color:rgba(37,224,196,.5);
  box-shadow:0 24px 48px -36px rgba(37,224,196,.6);
}
.panel-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:10px 16px;
  margin-bottom:14px;
}
.panel-title{
  font-family:var(--font-display);
  font-weight:800;
  font-size:19px;
  letter-spacing:-.005em;
  color:var(--mist);
}
.panel-meta{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--muted);
}
.panel-batch{
  margin-top:14px;
  padding-top:0;
  max-height:0;
  opacity:0;
  overflow:hidden;
  border-top:1px dashed var(--line);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--muted);
  transition:max-height .35s var(--ease),opacity .3s var(--ease),padding-top .35s var(--ease);
}
.panel:hover .panel-batch,.panel:focus-within .panel-batch{
  max-height:140px;
  padding-top:12px;
  opacity:1;
}

.table-scroll{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:rgba(17,28,47,.55);
  -webkit-overflow-scrolling:touch;
}
.data-table{
  width:100%;
  min-width:640px;
  border-collapse:collapse;
  font-size:14.5px;
}
.data-table caption{
  padding:14px 18px;
  text-align:left;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--muted);
}
.data-table th,
.data-table td{
  padding:12px 16px;
  text-align:left;
  vertical-align:top;
  border-bottom:1px solid rgba(36,52,76,.72);
}
.data-table thead th{
  background:rgba(10,17,32,.72);
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.1em;
  color:var(--muted);
  white-space:nowrap;
}
.data-table tbody tr:nth-child(even){background:rgba(10,17,32,.42);}
.data-table tbody tr:hover{background:rgba(37,224,196,.07);}
.data-table tbody tr:last-child td{border-bottom:0;}
.data-table .num{
  font-family:var(--font-mono);
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
  color:var(--mist);
}

.grid{display:grid;gap:clamp(16px,2vw,26px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr);}
.grid--5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr);}
.grid--span-2{grid-column:span 2;}

.figure-frame{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:
    radial-gradient(120% 90% at 12% 8%,rgba(37,224,196,.14),transparent 62%),
    linear-gradient(150deg,var(--hull),var(--abyss) 74%);
}
.figure-frame > img{width:100%;height:100%;object-fit:cover;}
.figure-frame::before{
  content:"";
  position:absolute;
  top:11px;left:11px;
  width:22px;height:22px;
  border-top:1px solid rgba(37,224,196,.8);
  border-left:1px solid rgba(37,224,196,.8);
  border-radius:4px 0 0 0;
  pointer-events:none;
}
.figure-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(180deg,transparent 54%,rgba(10,17,32,.74));
}
.figure-frame figcaption{
  position:absolute;
  left:14px;right:14px;bottom:12px;
  z-index:2;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--muted);
}
.figure-frame--16x9{aspect-ratio:16/9;}
.figure-frame--4x3{aspect-ratio:4/3;}
.figure-frame--1x1{aspect-ratio:1/1;}
.figure-frame--3x4{aspect-ratio:3/4;}

.prose{
  max-width:72ch;
  font-size:16.5px;
  line-height:1.8;
  color:rgba(233,239,247,.92);
}
.prose > * + *{margin-top:1em;}
.prose h3{
  margin-top:1.6em;
  font-family:var(--font-display);
  font-weight:800;
  font-size:20px;
  letter-spacing:-.005em;
  color:var(--mist);
}
.prose strong{color:var(--mist);font-weight:700;}
.prose code{
  font-family:var(--font-mono);
  font-size:.92em;
  letter-spacing:.03em;
  color:var(--cyan);
}

.mono{font-family:var(--font-mono);letter-spacing:.04em;font-variant-numeric:tabular-nums;}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.2em;
  color:var(--amber);
}
.link{
  color:var(--cyan);
  border-bottom:1px solid rgba(37,224,196,.35);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.link:hover{border-bottom-color:var(--cyan);color:#7FF5E4;}
.rule-band{
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--indigo) 52%,var(--amber));
  opacity:.85;
}

/* 返回顶部（由 JS 注入） */
.to-top{
  position:fixed;
  right:clamp(14px,3vw,30px);
  bottom:clamp(14px,3vw,30px);
  z-index:70;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 15px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(17,28,47,.94);
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease),border-color .3s var(--ease),color .3s var(--ease);
}
.to-top[data-visible="true"]{opacity:1;visibility:visible;transform:none;}
.to-top:hover{border-color:var(--cyan);color:var(--cyan);}

/* 入场显现（仅 JS 可用且允许动效时生效） */
html.js-reveal [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .45s var(--ease),transform .45s var(--ease);
}
html.js-reveal [data-reveal].is-revealed{opacity:1;transform:none;}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer{
  position:relative;
  margin-top:clamp(60px,9vw,130px);
  background:#070D18;
  border-top:1px solid var(--line);
  color:var(--muted);
}
.footer-band{
  height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--indigo) 50%,var(--amber));
  opacity:.8;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.75fr;
  gap:clamp(24px,3vw,44px);
  padding-top:clamp(40px,5vw,64px);
  padding-bottom:clamp(28px,3.4vw,44px);
}
.footer-brand{
  font-family:var(--font-display);
  font-weight:900;
  font-size:26px;
  letter-spacing:-.01em;
  line-height:1.2;
  color:var(--mist);
}
.footer-brand-suffix{
  margin-top:10px;
  font-size:14px;
  line-height:1.7;
  color:var(--muted);
}
.footer-meta{
  margin-top:12px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--cyan);
}
.footer-title{
  margin-bottom:16px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--cyan);
}
.footer-links li + li{margin-top:10px;}
.footer-links a{
  position:relative;
  display:inline-block;
  padding-left:0;
  font-size:14.5px;
  color:var(--muted);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-links a::before{
  content:"";
  position:absolute;
  left:0;top:.7em;
  width:0;height:1px;
  background:var(--amber);
  transition:width .2s var(--ease);
}
.footer-links a:hover{color:var(--mist);padding-left:14px;}
.footer-links a:hover::before{width:9px;}
.footer-contact li{
  display:grid;
  grid-template-columns:76px minmax(0,1fr);
  gap:10px;
  padding:10px 0;
  border-bottom:1px dashed rgba(36,52,76,.9);
  font-size:14px;
  line-height:1.65;
}
.footer-contact li:first-child{padding-top:0;}
.footer-contact li:last-child{border-bottom:0;}
.footer-label{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--amber);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding-top:18px;
  padding-bottom:30px;
  border-top:1px solid var(--line);
  font-size:13px;
}
.footer-note{color:var(--muted);}
.footer-copy{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(143,163,188,.85);
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1180px){
  .status-strip{display:none;}
}

@media (max-width:1080px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:980px){
  :root{--header-h:64px;}

  .nav-toggle{display:inline-flex;}
  .header-cta{display:none;}
  .header-index{display:none;}

  .site-nav{
    position:fixed;
    left:0;right:0;
    top:var(--header-h);
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    padding:10px var(--gutter) 26px;
    background:rgba(8,14,26,.985);
    border-bottom:1px solid var(--line);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    pointer-events:none;
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease);
  }
  .site-nav[data-open="true"]{
    opacity:1;
    visibility:visible;
    transform:none;
    pointer-events:auto;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0;width:100%;}
  .nav-link{
    padding:15px 4px;
    border-bottom:1px solid var(--line);
    border-radius:0;
    font-size:15.5px;
  }
  .nav-link::before{font-size:11px;margin-right:10px;}
  .nav-link:hover,.nav-link[aria-current="page"]{background:transparent;}
  .nav-link[aria-current="page"]::after{
    left:0;right:auto;bottom:-1px;
    width:44px;height:2px;
  }
  .nav-foot{display:block;padding-top:22px;}
  .nav-status{display:flex;flex-wrap:wrap;gap:8px;}
  .nav-status li{
    padding:5px 11px;
    border:1px solid var(--line);
    border-radius:999px;
    font-family:var(--font-mono);
    font-size:11.5px;
    letter-spacing:.05em;
    color:var(--muted);
  }
  .nav-foot .btn{margin-top:18px;}
}

@media (max-width:900px){
  .grid--2,.grid--3,.grid--7-5,.grid--5-7{grid-template-columns:minmax(0,1fr);}
  .grid--span-2{grid-column:auto;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-col--brand,.footer-col--contact{grid-column:span 2;}
}

@media (max-width:620px){
  :root{--header-h:60px;}
  body{font-size:16.5px;}
  .brand-suffix{display:none;}
  .brand-name{font-size:16px;}
  .nav-toggle{padding:8px 11px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-col--brand,.footer-col--contact{grid-column:auto;}
  .footer-contact li{grid-template-columns:minmax(0,1fr);gap:2px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* ==========================================================================
   动效降级
   ========================================================================== */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .skip-link,
  .site-header,
  .btn,
  .nav-toggle,
  .nav-toggle-bars i,
  .panel,
  .panel-batch,
  .footer-links a,
  .to-top,
  .site-nav{transition-duration:.001ms !important;}
  html.js-reveal [data-reveal]{opacity:1;transform:none;transition:none;}
  .header-progress > span{transition:none;}
}