/* =========================================================
   云开赛场 · 共享站点样式 /assets/site.css
   深空蓝底板 · 竞技橙入口 · 荧光青绿数据 · 暖金荣誉
   ========================================================= */

:root{
  --yk-900:#070E22;
  --yk-800:#0D1833;
  --yk-700:#16264A;
  --yk-line:#2C4272;
  --yk-paper:#F1F5FF;
  --yk-mist:#9DAECB;
  --yk-orange:#FF6B2C;
  --yk-mint:#2EF2C8;
  --yk-gold:#F4B740;
  --yk-deep:#C94A17;

  --yk-hdr-h:78px;
  --yk-wrap:1280px;
  --yk-gutter:clamp(18px,3vw,44px);
  --yk-measure:42rem;

  --yk-font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --yk-font-body:"HarmonyOS Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --yk-font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --yk-ease:cubic-bezier(.22,.61,.36,1);
  --yk-shadow:0 28px 64px -36px rgba(2,6,18,.95);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img,svg,video{display:block;max-width:100%;height:auto;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
input,textarea,select{font:inherit;}

/* ---------- 基础排版 ---------- */
body{
  background:var(--yk-900);
  color:var(--yk-paper);
  font-family:var(--yk-font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

h1,h2,h3,h4{
  font-family:var(--yk-font-display);
  font-weight:900;
  line-height:1.18;
  letter-spacing:-.02em;
  color:var(--yk-paper);
}
h1{font-size:clamp(2rem,4.4vw,3.5rem);}
h2{font-size:clamp(1.5rem,2.8vw,2.25rem);}
h3{font-size:clamp(1.15rem,1.8vw,1.45rem);letter-spacing:-.01em;}

p{max-width:var(--yk-measure);}
strong{font-weight:800;color:var(--yk-paper);}
::selection{background:var(--yk-orange);color:var(--yk-900);}

:where(a,button,summary,[tabindex]):focus-visible{
  outline:2px solid var(--yk-mint);
  outline-offset:3px;
}

/* ---------- 容器 ---------- */
.yk-wrap{
  width:min(var(--yk-wrap),calc(100% - var(--yk-gutter) * 2));
  margin-inline:auto;
}

/* ---------- skip link ---------- */
.yk-skip{
  position:fixed;
  top:8px;
  left:8px;
  z-index:200;
  padding:10px 18px;
  background:var(--yk-orange);
  color:var(--yk-900);
  font-family:var(--yk-font-mono);
  font-size:12px;
  letter-spacing:.08em;
  border:1px solid var(--yk-deep);
  transform:translateY(-160%);
  transition:transform .2s var(--yk-ease);
}
.yk-skip:focus{transform:translateY(0);}

/* =========================================================
   头部
   ========================================================= */
.yk-hdr{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .28s var(--yk-ease),border-color .28s var(--yk-ease);
}
.yk-hdr[data-scrolled="true"],
.yk-hdr[data-nav-open="true"]{
  background:rgba(7,14,34,.95);
  border-bottom-color:var(--yk-line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.yk-hdr__grid{
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:0;
  transition:opacity .3s var(--yk-ease);
  background-image:repeating-linear-gradient(90deg,rgba(44,66,114,.34) 0 1px,transparent 1px 132px);
}
.yk-hdr[data-scrolled="true"] .yk-hdr__grid{opacity:1;}

.yk-hdr__inner{
  position:relative;
  width:min(1360px,calc(100% - 48px));
  margin-inline:auto;
  min-height:var(--yk-hdr-h);
  display:flex;
  align-items:center;
  gap:clamp(14px,2vw,36px);
}

/* 品牌 */
.yk-brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex:none;
  padding:6px 0;
}
.yk-brand__mark{
  position:relative;
  width:36px;height:36px;
  flex:none;
  background:var(--yk-orange);
  clip-path:polygon(0 0,100% 0,100% 62%,62% 100%,0 100%);
  transition:background-color .22s var(--yk-ease);
}
.yk-brand__mark::before{
  content:"";
  position:absolute;
  inset:0;
  margin:auto;
  width:13px;height:13px;
  background:var(--yk-900);
}
.yk-brand__mark::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:4px;
  background:var(--yk-mint);
  opacity:.9;
}
.yk-brand:hover .yk-brand__mark{background:var(--yk-mint);}
.yk-brand__text{display:flex;flex-direction:column;gap:1px;min-width:0;}
.yk-brand__name{
  font-family:var(--yk-font-display);
  font-weight:900;
  font-size:19px;
  line-height:1.15;
  letter-spacing:.03em;
  color:var(--yk-paper);
}
.yk-brand__tag{
  font-family:var(--yk-font-mono);
  font-size:10px;
  line-height:1.4;
  letter-spacing:.2em;
  color:var(--yk-mist);
}
.yk-brand--ftr .yk-brand__mark{width:30px;height:30px;}
.yk-brand--ftr .yk-brand__name{font-size:17px;}

/* 导航 */
.yk-nav{
  display:flex;
  align-items:center;
  justify-content:center;
  flex:1;
  min-width:0;
}
.yk-nav__list{
  display:flex;
  align-items:center;
  gap:clamp(8px,1.4vw,26px);
}
.yk-nav__link{
  position:relative;
  display:block;
  padding:9px 3px;
  font-size:15px;
  font-weight:500;
  color:var(--yk-mist);
  white-space:nowrap;
  transition:color .2s var(--yk-ease);
}
.yk-nav__link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:2px;
  height:2px;
  background:var(--yk-orange);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .26s var(--yk-ease),background-color .2s var(--yk-ease);
}
.yk-nav__link:hover{color:var(--yk-paper);}
.yk-nav__link:hover::after{transform:scaleX(1);background:var(--yk-mint);}
.yk-nav__link[aria-current="page"]{color:var(--yk-paper);font-weight:700;}
.yk-nav__link[aria-current="page"]::after{transform:scaleX(1);background:var(--yk-orange);}
.yk-nav__foot{display:none;}

/* 工具区 */
.yk-hdr__tools{
  display:flex;
  align-items:center;
  gap:12px;
  flex:none;
  margin-left:auto;
}
.yk-search{
  display:flex;
  align-items:center;
  gap:10px;
  height:38px;
  padding:0 12px;
  border:1px solid var(--yk-line);
  background:rgba(22,38,74,.55);
  color:var(--yk-mist);
  font-size:13px;
  letter-spacing:.02em;
  transition:border-color .2s var(--yk-ease),color .2s var(--yk-ease),background-color .2s var(--yk-ease);
}
.yk-search:hover,
.yk-search:focus-visible{
  border-color:var(--yk-mint);
  background:var(--yk-700);
  color:var(--yk-paper);
}
.yk-search__icon{
  position:relative;
  width:13px;height:13px;
  flex:none;
  border:1.5px solid currentColor;
  border-radius:50%;
}
.yk-search__icon::after{
  content:"";
  position:absolute;
  right:-4px;bottom:-3px;
  width:6px;height:1.5px;
  background:currentColor;
  transform:rotate(45deg);
}
.yk-search__text{white-space:nowrap;}
.yk-search__key{
  font-family:var(--yk-font-mono);
  font-size:11px;
  line-height:1;
  padding:3px 5px;
  border:1px solid var(--yk-line);
  color:var(--yk-mint);
}

.yk-version{
  display:inline-block;
  padding-left:10px;
  border-left:2px solid var(--yk-mint);
  font-family:var(--yk-font-mono);
  font-size:11px;
  line-height:1.5;
  letter-spacing:.04em;
  color:var(--yk-mist);
  white-space:nowrap;
}

/* 汉堡 */
.yk-burger{
  display:none;
  align-items:center;
  gap:10px;
  height:40px;
  padding:0 12px;
  border:1px solid var(--yk-line);
  background:var(--yk-700);
  color:var(--yk-paper);
  transition:border-color .2s var(--yk-ease),background-color .2s var(--yk-ease);
}
.yk-burger:hover{border-color:var(--yk-orange);}
.yk-burger__label{
  font-family:var(--yk-font-mono);
  font-size:11px;
  letter-spacing:.18em;
}
.yk-burger__bars{
  position:relative;
  display:block;
  width:18px;height:11px;
}
.yk-burger__bars::before,
.yk-burger__bars::after{
  content:"";
  position:absolute;
  left:0;right:0;
  height:2px;
  background:var(--yk-orange);
  transition:transform .24s var(--yk-ease),top .24s var(--yk-ease),bottom .24s var(--yk-ease),background-color .2s var(--yk-ease);
}
.yk-burger__bars::before{top:0;}
.yk-burger__bars::after{bottom:0;}
.yk-burger[aria-expanded="true"] .yk-burger__bars::before{top:4.5px;transform:rotate(45deg);background:var(--yk-mint);}
.yk-burger[aria-expanded="true"] .yk-burger__bars::after{bottom:4.5px;transform:rotate(-45deg);background:var(--yk-mint);}

/* 滚动进度 */
.yk-progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  pointer-events:none;
  background:transparent;
}
.yk-progress__bar{
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg,var(--yk-orange),var(--yk-mint));
  transition:transform .12s linear;
}

/* =========================================================
   通用按钮
   ========================================================= */
.yk-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:40px;
  padding:0 18px;
  border:1px solid var(--yk-line);
  background:var(--yk-700);
  color:var(--yk-paper);
  font-family:var(--yk-font-display);
  font-size:14px;
  font-weight:800;
  letter-spacing:.05em;
  white-space:nowrap;
  transition:background-color .2s var(--yk-ease),border-color .2s var(--yk-ease),color .2s var(--yk-ease),transform .2s var(--yk-ease);
}
.yk-btn:hover{border-color:var(--yk-mint);color:var(--yk-paper);}
.yk-btn:active{transform:translateY(1px);}
.yk-btn--cta{
  background:var(--yk-orange);
  border-color:var(--yk-orange);
  color:var(--yk-900);
}
.yk-btn--cta:hover{
  background:var(--yk-mint);
  border-color:var(--yk-mint);
  color:var(--yk-900);
}
.yk-btn--cta:active{background:var(--yk-deep);border-color:var(--yk-deep);color:var(--yk-paper);}
.yk-btn--ghost{
  background:transparent;
  border-color:var(--yk-line);
  color:var(--yk-mist);
}
.yk-btn--ghost:hover{border-color:var(--yk-orange);color:var(--yk-paper);}

/* =========================================================
   通用内容组件
   ========================================================= */
.yk-kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--yk-font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--yk-mist);
}
.yk-kicker::before{
  content:"";
  width:22px;height:1px;
  flex:none;
  background:var(--yk-orange);
}
.yk-vnote{
  writing-mode:vertical-rl;
  font-family:var(--yk-font-mono);
  font-size:11px;
  letter-spacing:.34em;
  line-height:1.2;
  color:var(--yk-mist);
}
.yk-slash{
  height:1px;
  border:0;
  background:linear-gradient(90deg,var(--yk-line),transparent);
  transform:skewY(-2.5deg);
  transform-origin:left center;
}
.yk-rule{
  height:1px;
  border:0;
  background:var(--yk-line);
}

.yk-panel{
  position:relative;
  background:var(--yk-800);
  border:1px solid var(--yk-line);
  padding:clamp(20px,3vw,40px);
  box-shadow:var(--yk-shadow);
}
.yk-panel::before{
  content:"";
  position:absolute;
  top:-1px;left:-1px;
  width:14px;height:14px;
  border-top:2px solid var(--yk-orange);
  border-left:2px solid var(--yk-orange);
  pointer-events:none;
}
.yk-panel--flat{padding:0;}
.yk-panel--ink{background:var(--yk-700);}

.yk-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2.4vw,32px);
}
.yk-col-12,.yk-col-8,.yk-col-7,.yk-col-6,.yk-col-5,.yk-col-4{grid-column:1 / -1;}
@media (min-width:900px){
  .yk-col-12{grid-column:span 12;}
  .yk-col-8{grid-column:span 8;}
  .yk-col-7{grid-column:span 7;}
  .yk-col-6{grid-column:span 6;}
  .yk-col-5{grid-column:span 5;}
  .yk-col-4{grid-column:span 4;}
}

.yk-prose{
  max-width:var(--yk-measure);
  color:var(--yk-mist);
  font-size:17px;
  line-height:1.78;
}
.yk-prose > * + *{margin-top:1.1em;}
.yk-prose h2,
.yk-prose h3{color:var(--yk-paper);margin-top:1.8em;}
.yk-prose strong{color:var(--yk-paper);}
.yk-prose ul,
.yk-prose ol{padding-left:1.3em;list-style:disc;}
.yk-prose ol{list-style:decimal;}
.yk-prose li{margin-top:.4em;}
.yk-prose li::marker{color:var(--yk-orange);}
.yk-prose a{color:var(--yk-mint);border-bottom:1px solid rgba(46,242,200,.4);}
.yk-prose a:hover{border-bottom-color:var(--yk-mint);}

.yk-mono{
  font-family:var(--yk-font-mono);
  font-size:.92em;
  letter-spacing:.02em;
  color:var(--yk-mint);
}

/* 面包屑 */
.yk-crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--yk-font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--yk-mist);
}
.yk-crumbs a{color:var(--yk-mist);border-bottom:1px solid transparent;transition:color .2s var(--yk-ease),border-color .2s var(--yk-ease);}
.yk-crumbs a:hover{color:var(--yk-paper);border-bottom-color:var(--yk-orange);}
.yk-crumbs__sep{color:var(--yk-line);}
.yk-crumbs [aria-current="page"]{color:var(--yk-paper);}

/* 表格 */
.yk-table-wrap{
  width:100%;
  overflow-x:auto;
  border:1px solid var(--yk-line);
  background:var(--yk-800);
  -webkit-overflow-scrolling:touch;
}
.yk-table{
  width:100%;
  min-width:560px;
  border-collapse:collapse;
  font-size:14.5px;
  line-height:1.6;
}
.yk-table caption{
  caption-side:top;
  padding:14px 16px;
  text-align:left;
  font-family:var(--yk-font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--yk-mist);
  border-bottom:1px solid var(--yk-line);
}
.yk-table th,
.yk-table td{
  padding:12px 16px;
  text-align:left;
  vertical-align:top;
  border-bottom:1px solid var(--yk-line);
  color:var(--yk-mist);
}
.yk-table thead th{
  background:var(--yk-700);
  font-family:var(--yk-font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--yk-mint);
  white-space:nowrap;
}
.yk-table tbody tr:hover td{background:rgba(22,38,74,.6);color:var(--yk-paper);}
.yk-table td strong{color:var(--yk-paper);}
.yk-table .is-num{
  font-family:var(--yk-font-mono);
  font-variant-numeric:tabular-nums;
  color:var(--yk-paper);
}
.yk-table .is-key{color:var(--yk-mint);}

/* 图片容器（供页面阶段填充） */
.yk-media{
  position:relative;
  overflow:hidden;
  background:var(--yk-700);
  border:1px solid var(--yk-line);
}
.yk-media img{
  width:100%;height:100%;
  object-fit:cover;
  filter:saturate(1.06) contrast(1.04);
}
.yk-media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(160deg,rgba(46,242,200,.06),transparent 42%,rgba(7,14,34,.55));
}
.yk-media[data-ratio="21-9"]{aspect-ratio:21 / 9;}
.yk-media[data-ratio="16-9"]{aspect-ratio:16 / 9;}
.yk-media[data-ratio="4-3"]{aspect-ratio:4 / 3;}
.yk-media[data-ratio="1-1"]{aspect-ratio:1 / 1;}
.yk-media[data-ratio="3-4"]{aspect-ratio:3 / 4;}

.yk-figure{display:grid;gap:10px;}
.yk-figure__cap{
  font-family:var(--yk-font-mono);
  font-size:11px;
  letter-spacing:.1em;
  line-height:1.6;
  color:var(--yk-mist);
  padding-left:10px;
  border-left:2px solid var(--yk-line);
}

/* =========================================================
   页脚
   ========================================================= */
.yk-ftr{
  position:relative;
  margin-top:clamp(56px,8vw,112px);
  background:var(--yk-800);
  border-top:1px solid var(--yk-line);
  color:var(--yk-mist);
  overflow:hidden;
}
.yk-ftr::before{
  content:"";
  position:absolute;
  top:0;left:0;
  width:clamp(80px,20vw,260px);
  height:2px;
  background:var(--yk-orange);
}
.yk-ftr__grid{
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(44,66,114,.26) 0 1px,transparent 1px 128px);
}
.yk-ftr__inner{
  position:relative;
  width:min(var(--yk-wrap),calc(100% - var(--yk-gutter) * 2));
  margin-inline:auto;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:clamp(24px,3.4vw,56px);
  padding:clamp(38px,6vw,72px) 0 clamp(26px,4vw,44px);
}
.yk-ftr__brand{display:grid;gap:16px;align-content:start;}
.yk-ftr__line{
  max-width:22rem;
  font-size:15px;
  line-height:1.7;
  color:var(--yk-paper);
  font-family:var(--yk-font-display);
  font-weight:700;
  letter-spacing:0;
}
.yk-ftr__note{
  font-family:var(--yk-font-mono);
  font-size:11px;
  letter-spacing:.08em;
  line-height:1.8;
  color:var(--yk-mist);
  padding-top:12px;
  border-top:1px solid var(--yk-line);
}
.yk-ftr__col{display:grid;gap:14px;align-content:start;}
.yk-ftr__title{
  position:relative;
  font-family:var(--yk-font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--yk-paper);
  padding-bottom:10px;
}
.yk-ftr__title::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:18px;height:2px;
  background:var(--yk-mint);
}
.yk-ftr__list{display:grid;gap:9px;font-size:14.5px;}
.yk-ftr__list a{
  display:inline-block;
  color:var(--yk-mist);
  border-bottom:1px solid transparent;
  transition:color .2s var(--yk-ease),border-color .2s var(--yk-ease);
}
.yk-ftr__list a:hover{color:var(--yk-paper);border-bottom-color:var(--yk-orange);}
.yk-ftr__addr{
  font-style:normal;
  display:grid;
  gap:12px;
  font-size:13.5px;
  line-height:1.7;
  color:var(--yk-mist);
  word-break:break-word;
}
.yk-ftr__row{display:block;}
.yk-ftr__k{
  display:block;
  font-family:var(--yk-font-mono);
  font-size:10px;
  letter-spacing:.2em;
  color:var(--yk-mint);
  margin-bottom:2px;
}
.yk-ftr__base{
  position:relative;
  width:min(var(--yk-wrap),calc(100% - var(--yk-gutter) * 2));
  margin-inline:auto;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding:16px 0 24px;
  border-top:1px solid var(--yk-line);
  font-family:var(--yk-font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--yk-mist);
}
.yk-ftr__copy,
.yk-ftr__icp{max-width:none;}
.yk-ftr__top{
  color:var(--yk-mist);
  border-bottom:1px solid var(--yk-line);
  transition:color .2s var(--yk-ease),border-color .2s var(--yk-ease);
}
.yk-ftr__top:hover{color:var(--yk-mint);border-bottom-color:var(--yk-mint);}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1280px){
  .yk-version--desk{display:none;}
}

@media (max-width:1080px){
  :root{--yk-hdr-h:64px;}
  .yk-hdr__inner{width:calc(100% - 28px);gap:10px;}
  .yk-hdr__tools{gap:8px;}
  .yk-btn--hdr{display:none;}
  .yk-search{width:40px;height:40px;padding:0;justify-content:center;}
  .yk-search__text,
  .yk-search__key{display:none;}
  .yk-burger{display:inline-flex;}

  .yk-nav{
    position:fixed;
    top:var(--yk-hdr-h);
    left:0;right:0;bottom:0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    padding:18px var(--yk-gutter) 40px;
    background:var(--yk-800);
    border-top:1px solid var(--yk-line);
    background-image:repeating-linear-gradient(0deg,rgba(44,66,114,.22) 0 1px,transparent 1px 64px);
    overflow-y:auto;
    overscroll-behavior:contain;
    opacity:0;
    visibility:hidden;
    clip-path:inset(0 0 100% 0);
    transition:clip-path .32s var(--yk-ease),opacity .24s var(--yk-ease),visibility .32s;
  }
  .yk-nav[data-open="true"]{
    opacity:1;
    visibility:visible;
    clip-path:inset(0 0 0 0);
  }
  .yk-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    width:100%;
    counter-reset:yknav;
  }
  .yk-nav__item{border-bottom:1px solid var(--yk-line);}
  .yk-nav__link{
    display:flex;
    align-items:baseline;
    gap:14px;
    padding:16px 2px;
    font-family:var(--yk-font-display);
    font-size:20px;
    font-weight:800;
    color:var(--yk-paper);
  }
  .yk-nav__link::before{
    content:counter(yknav,decimal-leading-zero);
    counter-increment:yknav;
    font-family:var(--yk-font-mono);
    font-size:11px;
    font-weight:500;
    letter-spacing:.1em;
    color:var(--yk-mint);
  }
  .yk-nav__link::after{display:none;}
  .yk-nav__link[aria-current="page"]{color:var(--yk-orange);}

  .yk-nav__foot{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding-top:28px;
    margin-top:auto;
  }
  .yk-nav__foot .yk-btn{width:100%;height:46px;}

  body[data-nav-lock="true"]{overflow:hidden;}

  .yk-ftr__inner{grid-template-columns:1fr 1fr;gap:32px 28px;}
  .yk-ftr__brand{grid-column:1 / -1;}
}

@media (max-width:760px){
  body{font-size:16px;}
  .yk-brand__name{font-size:17px;}
  .yk-brand__tag{font-size:9.5px;letter-spacing:.16em;}
  .yk-brand__mark{width:32px;height:32px;}

  .yk-ftr__inner{grid-template-columns:1fr;gap:30px;}
  .yk-ftr__base{
    flex-direction:column;
    align-items:flex-start;
    gap:8px;
  }
  .yk-table{min-width:520px;font-size:13.5px;}
  .yk-table th,
  .yk-table td{padding:10px 12px;}
}

@media (max-width:420px){
  .yk-burger__label{display:none;}
  .yk-burger{padding:0 11px;}
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .yk-progress__bar{transition:none;}
  .yk-slash{transform:none;}
}

/* ---------- 打印 ---------- */
@media print{
  .yk-hdr,.yk-skip,.yk-ftr__grid,.yk-progress{display:none !important;}
  body{background:#fff;color:#000;}
}