/* ==========================================================================
   云开体育官网中文版 · 共享样式 /assets/site.css
   坐标网格母题 · 深空蓝底 + 荧光青主张色 + 警示橙功能色
   ========================================================================== */

:root{
  /* 色板 */
  --deep:#070C18;
  --navy:#0E1730;
  --cyan:#3DF5D6;
  --amber:#FF7A2F;
  --grey:#7C879B;
  --mist:#E9EEF7;
  --white:#FFFFFF;
  --grid:#1B2740;
  --cyan-12:rgba(61,245,214,.12);
  --cyan-24:rgba(61,245,214,.24);
  --amber-14:rgba(255,122,47,.14);

  /* 字体 */
  --font-sans:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  /* 六级字号 */
  --fs-display:clamp(38px,9vw,92px);
  --fs-h1:clamp(30px,6vw,56px);
  --fs-h2:clamp(22px,3.6vw,32px);
  --fs-h3:22px;
  --fs-body:16px;
  --fs-sm:14px;
  --fs-label:12px;

  /* 布局 */
  --gutter:clamp(16px,4vw,40px);
  --shell:min(1280px,calc(100% - var(--gutter) * 2));
  --topbar:88px;
  --line:1px solid var(--grid);

  /* 节奏 */
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:64px;--sp-7:96px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--topbar) + 8px);}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
img,svg{max-width:100%;display:block;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
a{color:inherit;}
main{display:block;}
:where(a,button,input,select,textarea,summary):focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px;}

/* ---------- 基础排版 ---------- */
body{
  background-color:var(--deep);
  color:var(--mist);
  font-family:var(--font-sans);
  font-size:var(--fs-body);
  line-height:1.75;
  letter-spacing:.01em;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;inset:0;
  background-image:
    linear-gradient(to right,rgba(27,39,64,.55) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(27,39,64,.55) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
body>*{position:relative;z-index:1;}

h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.18;color:var(--white);}
h1{font-size:var(--fs-h1);}
h2{font-size:var(--fs-h2);}
h3{font-size:var(--fs-h3);font-weight:700;}
strong{color:var(--white);font-weight:700;}
.mono{font-family:var(--font-mono);}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em;color:var(--white);white-space:nowrap;}
.measure{max-width:34em;}

/* ---------- 容器与网格 ---------- */
.container{width:var(--shell);margin-inline:auto;}
.container--narrow{width:min(760px,calc(100% - var(--gutter) * 2));margin-inline:auto;}
.container--full{padding-inline:var(--gutter);}
.section{padding:var(--sp-6) 0;}
.section--tight{padding:var(--sp-5) 0;}
.section--open{padding:var(--sp-7) 0;}

.grid{display:grid;gap:var(--sp-3);}
.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));}
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:var(--sp-5);align-items:start;}
.hairline{height:1px;width:100%;background:var(--grid);border:0;}

/* ---------- 展签 / 说明牌 / 面板 ---------- */
.sec-label{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:var(--fs-label);
  letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);
}
.sec-label::before{content:"";width:22px;height:1px;background:var(--cyan);}

.plate{
  display:flex;flex-direction:column;gap:6px;
  padding:14px 16px 14px 18px;
  background:rgba(14,23,48,.72);
  border:1px solid var(--grid);
  border-left:2px solid var(--cyan);
}
.plate--warn{border-left-color:var(--amber);}
.plate__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--grey);text-transform:uppercase;}
.plate__text{font-size:13px;line-height:1.7;color:var(--mist);}

.panel{
  background:var(--navy);
  border:1px solid var(--grid);
  padding:var(--sp-3);
}
.panel--accent{border-top:2px solid var(--cyan);}
.panel--warn{border-top:2px solid var(--amber);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  font-size:var(--fs-sm);font-weight:700;letter-spacing:.02em;
  text-decoration:none;border:1px solid transparent;border-radius:2px;
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.btn--primary{background:var(--cyan);color:var(--deep);border-color:var(--cyan);}
.btn--primary:hover{background:transparent;color:var(--cyan);}
.btn--ghost{background:transparent;color:var(--mist);border-color:var(--grid);}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);}
.btn--warn{background:transparent;color:var(--amber);border-color:var(--amber);}
.btn--warn:hover{background:var(--amber-14);}
.btn--sm{padding:8px 14px;font-size:13px;}

/* ---------- 图片容器（页面阶段放置图片占位） ---------- */
.figure{display:flex;flex-direction:column;gap:10px;margin:0;}
.figure__frame{
  position:relative;display:block;width:100%;
  aspect-ratio:16/9;
  background-color:var(--deep);
  background-image:
    linear-gradient(to right,rgba(27,39,64,.85) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(27,39,64,.85) 1px,transparent 1px),
    radial-gradient(120% 90% at 15% 0%,rgba(61,245,214,.10),transparent 62%);
  background-size:40px 40px,40px 40px,100% 100%;
  border:1px solid var(--grid);
  overflow:hidden;
}
.figure__frame img{width:100%;height:100%;object-fit:cover;}
.figure__frame::after{
  content:"";position:absolute;left:0;top:0;width:14px;height:14px;
  border-top:2px solid var(--cyan);border-left:2px solid var(--cyan);
}
.figure--tall .figure__frame{aspect-ratio:3/4;}
.figure--square .figure__frame{aspect-ratio:1/1;}
.figure--wide .figure__frame{aspect-ratio:21/9;}
.figure__caption{
  display:flex;gap:8px;align-items:baseline;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--grey);
}
.figure__caption b{color:var(--cyan);font-weight:400;}

/* ---------- 正文 ---------- */
.prose{font-size:var(--fs-body);line-height:1.75;color:var(--mist);max-width:34em;}
.prose p+p{margin-top:1.05em;}
.prose h2{margin-top:1.6em;margin-bottom:.6em;}
.prose h3{margin-top:1.3em;margin-bottom:.5em;}
.prose ul,.prose ol{display:flex;flex-direction:column;gap:8px;margin:1em 0;}
.prose li{position:relative;padding-left:18px;}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:1px;background:var(--cyan);}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px;}
.prose blockquote{
  margin:1.2em 0;padding:12px 0 12px 18px;
  border-left:2px solid var(--cyan);color:var(--mist);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{width:var(--shell);margin-inline:auto;padding:20px 0 0;}
.breadcrumb__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--grey);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb__item+.breadcrumb__item::before{content:"/";color:var(--grid);}
.breadcrumb__link{color:var(--grey);text-decoration:none;transition:color .16s var(--ease);}
.breadcrumb__link:hover{color:var(--cyan);}
.breadcrumb__item [aria-current="page"]{color:var(--cyan);}

/* ---------- 动效工具 ---------- */
.reveal.is-pending{opacity:0;transform:translateY(14px);}
.reveal.is-in{transition:opacity .42s var(--ease),transform .42s var(--ease);}
.num-roll{display:inline-block;overflow:hidden;line-height:1.08;vertical-align:bottom;}
.num-roll>span{display:block;transform:translateY(110%);transition:transform .42s var(--ease);}
.num-roll.is-in>span,.is-in .num-roll>span{transform:translateY(0);}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;left:16px;top:-120px;z-index:200;
  display:inline-flex;align-items:center;
  padding:10px 16px;font-size:var(--fs-sm);font-weight:700;
  background:var(--cyan);color:var(--deep);text-decoration:none;border-radius:2px;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:12px;}

/* ==========================================================================
   头部
   ========================================================================== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--deep);
  border-bottom:1px solid transparent;
  transition:background-color .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-condensed{
  background:var(--navy);
  border-bottom-color:var(--grid);
}
.site-header__inner{
  position:relative;
  width:var(--shell);margin-inline:auto;
  display:flex;align-items:center;gap:var(--sp-3);
  min-height:var(--topbar);
  padding-block:14px;
  transition:min-height .22s var(--ease),padding-block .22s var(--ease);
}
.site-header.is-condensed .site-header__inner{min-height:56px;padding-block:6px;}

/* 品牌 */
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;text-decoration:none;}
.brand__mark{
  position:relative;flex:0 0 auto;width:26px;height:26px;
  border:1px solid var(--cyan);
  background:radial-gradient(circle at 50% 50%,var(--cyan-12),transparent 70%);
  transition:width .22s var(--ease),height .22s var(--ease);
}
.brand__mark::before{content:"";position:absolute;left:50%;top:4px;bottom:4px;width:1px;background:var(--cyan);opacity:.55;}
.brand__mark::after{content:"";position:absolute;top:50%;left:4px;right:4px;height:1px;background:var(--cyan);opacity:.55;}
.site-header.is-condensed .brand__mark{width:22px;height:22px;}
.brand__text{display:flex;flex-direction:column;gap:2px;}
.brand__name{
  font-size:17px;font-weight:800;line-height:1.2;letter-spacing:-.012em;
  color:var(--white);white-space:nowrap;
}
.brand__tagline{
  font-family:var(--font-mono);font-size:11px;line-height:1.2;
  letter-spacing:.18em;color:var(--grey);white-space:nowrap;
  transition:opacity .2s var(--ease);
}
.site-header.is-condensed .brand__tagline{opacity:0;}

/* 导航 */
.header-nav{display:flex;align-items:center;margin-left:auto;}
.nav-list{display:flex;align-items:center;gap:2px;}
.nav-list__link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:6px;
  padding:9px 12px;
  font-size:var(--fs-sm);font-weight:600;letter-spacing:.02em;
  color:var(--mist);text-decoration:none;
  transition:color .16s var(--ease),background-color .16s var(--ease);
}
.nav-list__link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left center;
  transition:transform .2s var(--ease);
}
.nav-list__link:hover{color:var(--cyan);}
.nav-list__link:hover::after{transform:scaleX(1);}
.nav-list__link[aria-current="page"]{color:var(--cyan);}
.nav-list__link[aria-current="page"]::after{transform:scaleX(1);}
.nav-list__index{
  font-family:var(--font-mono);font-size:10px;font-weight:400;
  letter-spacing:0;color:var(--grey);
}
.nav-list__link[aria-current="page"] .nav-list__index,
.nav-list__link:hover .nav-list__index{color:var(--cyan);}
.nav-panel__foot{display:none;}

/* 头部操作区 */
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:var(--sp-2);}
.header-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:2px;
  font-size:var(--fs-sm);font-weight:700;letter-spacing:.02em;white-space:nowrap;
  background:var(--cyan);color:var(--deep);border:1px solid var(--cyan);text-decoration:none;
  transition:background-color .16s var(--ease),color .16s var(--ease);
}
.header-cta:hover{background:transparent;color:var(--cyan);}
.header-cta__dot{width:6px;height:6px;background:currentColor;flex:0 0 auto;}

/* 移动端栏目按钮 */
.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:9px 12px;border:1px solid var(--grid);border-radius:2px;
  font-size:var(--fs-label);letter-spacing:.16em;color:var(--mist);
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan);}
.nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:16px;}
.nav-toggle__bars span{display:block;height:1px;background:currentColor;transition:transform .2s var(--ease);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(2.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){transform:translateY(-2.5px) rotate(-45deg);}

/* 头部装饰 */
.header-scale{
  position:absolute;left:0;right:0;bottom:0;height:5px;
  opacity:0;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,var(--grid) 0 1px,transparent 1px 24px);
  transition:opacity .22s var(--ease);
}
.site-header.is-condensed .header-scale{opacity:1;}
.header-scale::after{content:"";position:absolute;left:0;top:0;width:2px;height:5px;background:var(--cyan);}
.scroll-progress{
  position:absolute;left:0;top:0;width:100%;height:2px;
  background:var(--cyan);
  transform:scaleX(0);transform-origin:left center;
  will-change:transform;
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer{
  position:relative;
  margin-top:var(--sp-7);
  background:var(--navy);
  border-top:1px solid var(--grid);
  color:var(--mist);
}
.site-footer::before{
  content:"";position:absolute;left:0;top:-1px;width:min(220px,40%);height:2px;background:var(--cyan);
}
.site-footer__inner{
  width:var(--shell);margin-inline:auto;
  display:grid;
  grid-template-columns:minmax(240px,320px) minmax(0,1fr);
  gap:var(--sp-6) var(--sp-5);
  padding:var(--sp-6) 0 var(--sp-5);
}
.footer-brand{display:flex;flex-direction:column;gap:10px;}
.footer-brand__mark{
  position:relative;width:26px;height:26px;border:1px solid var(--cyan);
  background:radial-gradient(circle at 50% 50%,var(--cyan-12),transparent 70%);
}
.footer-brand__mark::before{content:"";position:absolute;left:50%;top:4px;bottom:4px;width:1px;background:var(--cyan);opacity:.55;}
.footer-brand__mark::after{content:"";position:absolute;top:50%;left:4px;right:4px;height:1px;background:var(--cyan);opacity:.55;}
.footer-brand__name{font-size:18px;font-weight:800;letter-spacing:-.012em;color:var(--white);line-height:1.3;}
.footer-brand__tagline{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--cyan);}
.footer-brand__note{font-size:13px;line-height:1.8;color:var(--grey);max-width:28ch;}

.footer-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--sp-4) var(--sp-3);}
.footer-col{display:flex;flex-direction:column;}
.footer-col__title{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  color:var(--grey);text-transform:uppercase;
  padding-bottom:10px;margin-bottom:12px;border-bottom:1px solid var(--grid);
}
.footer-col__list{display:flex;flex-direction:column;gap:9px;}
.footer-col__link{
  display:inline-block;font-size:14px;line-height:1.6;
  color:var(--mist);text-decoration:none;
  transition:color .16s var(--ease);
}
.footer-col__link::before{
  content:"";display:inline-block;width:0;height:1px;background:var(--cyan);
  vertical-align:middle;margin-right:0;
  transition:width .2s var(--ease),margin-right .2s var(--ease);
}
.footer-col__link:hover{color:var(--cyan);}
.footer-col__link:hover::before{width:10px;margin-right:6px;}

.footer-contact{
  width:var(--shell);margin-inline:auto;
  display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 22px;
  padding:var(--sp-3) 0;
  border-top:1px solid var(--grid);border-bottom:1px solid var(--grid);
}
.footer-contact__label{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  color:var(--cyan);text-transform:uppercase;
}
.footer-contact__item{font-size:13px;line-height:1.7;color:var(--mist);}

.footer-bottom{
  width:var(--shell);margin-inline:auto;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;padding:var(--sp-3) 0 var(--sp-5);
}
.footer-legal,.footer-copy{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--grey);
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1200px){
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:1100px){
  .site-footer__inner{grid-template-columns:minmax(0,1fr);gap:var(--sp-5);}
  .footer-brand__note{max-width:52ch;}
}

@media (max-width:960px){
  .nav-toggle{display:inline-flex;}
  .header-actions{margin-left:auto;}

  .header-nav{
    position:absolute;left:0;right:0;top:100%;
    display:block;margin:0;
    padding:0 var(--gutter) 24px;
    background:var(--navy);
    border-top:1px solid var(--grid);
    border-bottom:1px solid var(--cyan);
    max-height:0;opacity:0;visibility:hidden;overflow:hidden;
    transition:max-height .34s var(--ease),opacity .2s var(--ease),visibility .34s;
  }
  .header-nav[data-open]{
    max-height:min(76vh,560px);
    opacity:1;visibility:visible;overflow-y:auto;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0;padding-top:8px;}
  .nav-list__item{border-bottom:1px solid var(--grid);}
  .nav-list__link{
    width:100%;justify-content:flex-start;gap:12px;
    padding:15px 2px;font-size:16px;
  }
  .nav-list__link::after{
    left:0;right:auto;top:9px;bottom:9px;width:2px;height:auto;
    transform:scaleY(0);transform-origin:top center;
  }
  .nav-list__link:hover::after,
  .nav-list__link[aria-current="page"]::after{transform:scaleY(1);}
  .nav-panel__foot{display:flex;flex-direction:column;gap:12px;padding:18px 0 4px;}
  .nav-panel__meta{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--grey);}

  .split{grid-template-columns:minmax(0,1fr);gap:var(--sp-4);}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section{padding:var(--sp-5) 0;}
  .section--open{padding:var(--sp-6) 0;}
}

@media (max-width:760px){
  body{font-size:15px;line-height:1.7;}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr);}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-4) var(--sp-3);}
  .prose{max-width:none;}
  .site-footer{margin-top:var(--sp-6);}
}

@media (max-width:600px){
  .brand__tagline{display:none;}
  .brand__name{font-size:13px;letter-spacing:0;}
  .brand__mark{width:22px;height:22px;}
  .site-header.is-condensed .brand__mark{width:20px;height:20px;}
  .header-cta{padding:8px 12px;font-size:13px;}
  .header-cta__dot{display:none;}
  .header-actions{gap:8px;}
  .nav-toggle{padding:8px 10px;}
  .btn{padding:11px 18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
  }
  .reveal.is-pending{opacity:1;transform:none;}
  .num-roll>span{transform:none;}
  .header-nav{transition:none;}
}