/* ============================================================
   88优德赛事 · 共享样式表 /assets/site.css
   坐标系统：深墨黑绿底 + 荧光青刻度 + 信号橙锚点
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink:#0A1714;
  --ink-2:#12261F;
  --char:#0B0D0E;
  --teal-deep:#12403B;
  --indigo:#2A2A5C;
  --wine:#6E2437;
  --cyan:#00E6C3;
  --orange:#FF6B1A;
  --white:#EDF3F1;
  --grey:#869795;
  --line:#2C3B38;
  --paper:#F2F5F4;

  --font-display:"Arial Narrow","Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;

  --header-h:76px;
  --header-h-scrolled:58px;
  --pad-x:clamp(18px,4vw,56px);
  --section-y:clamp(64px,9vh,112px);
  --radius:2px;
  --ease:cubic-bezier(.4,0,.2,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{overflow-x:hidden;-webkit-text-size-adjust:100%}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,picture,svg,video{display:block;max-width:100%}
img{height:auto}
a{color:inherit;text-decoration:none}
button{background:none;border:0;cursor:pointer;color:inherit}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:1px}
::selection{background:var(--cyan);color:var(--char)}

@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}

/* ---------- 3. 基础排版 ---------- */
body{
  margin:0;
  background-color:var(--ink);
  background-image:
    linear-gradient(to right,rgba(44,59,56,.22) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(44,59,56,.22) 1px,transparent 1px);
  background-size:88px 88px;
  color:var(--white);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.nav-open{overflow:hidden}

.display-title{
  font-family:var(--font-display);
  font-weight:200;
  font-size:clamp(32px,7.2vw,96px);
  line-height:.95;
  letter-spacing:-.015em;
  color:var(--white);
}
.display-title--sm{font-size:clamp(26px,3.6vw,48px);font-weight:300;line-height:1.08;letter-spacing:-.01em}

.index-label{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--cyan);
}
.index-label::before{content:"";width:22px;height:1px;background:currentColor}
.index-label--orange{color:var(--orange)}

.lede{font-size:clamp(16px,1.25vw,19px);line-height:1.75;max-width:60ch;color:rgba(237,243,241,.8)}
.prose{font-size:17px;line-height:1.75}
.prose p{max-width:68ch;margin-bottom:1.05em}
.prose p:last-child{margin-bottom:0}
.prose h2{font-family:var(--font-display);font-weight:400;font-size:clamp(22px,2.4vw,32px);line-height:1.2;margin:1.6em 0 .6em}
.prose ul,.prose ol{max-width:68ch;margin:0 0 1.05em;padding-left:1.1em;list-style:disc}
.prose li{margin-bottom:.4em}
.mono-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.tick-rule{position:relative;height:1px;width:100%;background:var(--line)}
.tick-rule::after{content:"";position:absolute;left:0;top:-2px;width:5px;height:5px;background:var(--cyan)}

/* ---------- 4. 布局工具 ---------- */
.container{width:100%;max-width:1240px;margin-inline:auto;padding-inline:var(--pad-x)}
.container-narrow{width:100%;max-width:860px;margin-inline:auto;padding-inline:var(--pad-x)}
.site-main{display:block;padding-top:var(--header-h)}
.site-main--flush{padding-top:0}
.section{padding-block:var(--section-y)}
.section-tight{padding-block:clamp(36px,5vh,64px)}
.grid{display:grid;gap:clamp(20px,3vw,40px)}
.grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}
.btn-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border:1px solid transparent;border-radius:var(--radius);
  font-size:13px;letter-spacing:.1em;white-space:nowrap;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-primary{background:var(--orange);color:#0B0D0E;font-weight:600}
.btn-primary:hover{background:#FF8347}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border-color:var(--line);color:var(--white)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}

/* ---------- 6. 卡片 / 面板 / 标签 ---------- */
.card{
  position:relative;padding:clamp(20px,2.4vw,30px);
  background:var(--ink-2);border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color .25s var(--ease);
}
.card:hover{border-color:var(--cyan)}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.card-num{
  display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(34px,4.6vw,58px);line-height:1;font-weight:500;color:var(--white);
  transform-origin:left center;transition:transform .25s var(--ease),color .25s var(--ease);
}
.card:hover .card-num{transform:scale(1.02);color:var(--cyan)}
.card-title{font-family:var(--font-display);font-weight:600;font-size:19px;letter-spacing:.01em;margin-bottom:8px}
.card-text{font-size:15px;color:var(--grey);max-width:46ch}
.card-meta{margin-top:16px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--grey)}

.panel{position:relative;padding-block:var(--section-y);background:var(--ink-2)}
.panel--teal{background:var(--teal-deep)}
.panel--indigo{background:var(--indigo)}
.panel--wine{background:var(--wine)}
.panel--paper{background:var(--paper);color:#101B18}
.panel--paper .lede,.panel--paper .card-text,.panel--paper .prose{color:#3A4A47}
.panel--paper .index-label{color:#0E7A6A}
.panel--paper .display-title{color:#101B18}

.badge{
  display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border-radius:999px;
  border:1px solid var(--line);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--grey);
}
.badge--live{border-color:rgba(255,107,26,.55);color:var(--orange)}
.badge--live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange)}
.badge--muted{color:var(--grey)}

/* ---------- 7. 图片容器（页面阶段放置素材） ---------- */
.media-frame{position:relative;overflow:hidden;background:var(--ink-2);border:1px solid var(--line);border-radius:var(--radius)}
.media-frame > img,.media-frame > svg{width:100%;height:100%;object-fit:cover}
.media-frame--16x9{aspect-ratio:16/9}
.media-frame--4x5{aspect-ratio:4/5}
.media-frame--1x1{aspect-ratio:1/1}
.media-frame::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,rgba(10,23,20,.12),rgba(10,23,20,.5));
}
.media-frame-tag{
  position:absolute;top:12px;left:12px;z-index:2;padding:4px 8px;
  background:rgba(11,13,14,.78);border:1px solid var(--line);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:var(--cyan);
}
.media-frame-caption{margin-top:10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--grey)}

/* ---------- 8. 数据表 / 面包屑 ---------- */
.data-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;background:var(--ink-2);border:1px solid var(--line);border-radius:var(--radius)}
.data-table{min-width:520px;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:13px}
.data-table th,.data-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
.data-table th{font-size:11px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--grey)}
.data-table td{color:rgba(237,243,241,.86)}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table tbody tr:hover td{background:rgba(0,230,195,.05)}

.breadcrumb{padding-block:20px}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--grey)}
.breadcrumb-item{display:inline-flex;align-items:center;gap:10px}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--line)}
.breadcrumb-link{transition:color .2s var(--ease)}
.breadcrumb-link:hover{color:var(--cyan)}

/* ---------- 9. 跳过链接 ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:120;
  padding:10px 16px;background:var(--cyan);color:var(--char);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  transform:translateY(-180%);transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 10. 头部 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:linear-gradient(to bottom,rgba(10,23,20,.86),rgba(10,23,20,0));
  transition:background-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{background:var(--char);box-shadow:0 1px 0 var(--line)}
.header-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;gap:clamp(14px,3vw,40px);
  height:var(--header-h);padding-inline:var(--pad-x);
  transition:height .3s var(--ease);
}
.site-header.is-scrolled .header-inner{height:var(--header-h-scrolled)}

.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{position:relative;width:16px;height:16px;border:1px solid var(--cyan);flex:0 0 auto}
.brand-mark::after{content:"";position:absolute;inset:5px;background:var(--cyan);transition:transform .3s var(--ease)}
.brand:hover .brand-mark::after{transform:scale(1.7)}
.brand-text{display:flex;flex-direction:column;gap:3px;line-height:1}
.brand-name{font-family:var(--font-display);font-size:16px;font-weight:600;letter-spacing:.04em;color:var(--white)}
.brand-sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--grey)}

.site-nav{display:flex;align-items:center;margin-left:auto}
.nav-index-label{display:none}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{display:block}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:14px;
  padding:10px 13px;border-radius:var(--radius);
  font-size:14px;color:rgba(237,243,241,.74);
  transition:color .2s var(--ease);
}
.nav-link::before{
  content:attr(data-index);display:none;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--cyan);
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left center;
  transition:transform .25s var(--ease);
}
.nav-link:hover{color:var(--white)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.header-pin{
  flex:0 0 auto;width:9px;height:9px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 0 4px rgba(0,230,195,.14);
  animation:pin-pulse 2.8s ease-in-out infinite;
}
@keyframes pin-pulse{
  0%,100%{box-shadow:0 0 0 4px rgba(0,230,195,.14)}
  50%{box-shadow:0 0 0 9px rgba(0,230,195,.04)}
}

.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}

.nav-toggle{
  display:none;position:relative;width:44px;height:44px;flex:0 0 auto;
  border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color .22s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan)}
.nav-toggle-bar{
  position:absolute;left:12px;right:12px;height:1px;background:var(--white);
  transition:transform .3s var(--ease),opacity .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle-bar:nth-child(1){top:16px}
.nav-toggle-bar:nth-child(2){top:22px}
.nav-toggle-bar:nth-child(3){top:28px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(6px) rotate(45deg);background:var(--cyan)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-6px) rotate(-45deg);background:var(--cyan)}

.header-progress{
  position:absolute;left:0;bottom:0;width:100%;height:2px;z-index:3;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  transform:scaleX(0);transform-origin:left center;
  transition:transform .1s linear;
}

.nav-scrim{
  position:fixed;inset:0;z-index:1;
  background:rgba(6,10,9,.68);
  opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.nav-scrim.is-open{opacity:1;visibility:visible}

.rail-top{
  position:fixed;right:clamp(16px,3vw,34px);bottom:calc(clamp(16px,3vw,34px) + env(safe-area-inset-bottom,0px));
  z-index:75;display:flex;align-items:center;justify-content:center;
  width:46px;height:46px;border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(11,13,14,.86);color:var(--grey);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.rail-top.is-shown{opacity:1;visibility:visible;transform:none}
.rail-top:hover{border-color:var(--cyan);color:var(--cyan)}
.rail-top-glyph{width:11px;height:11px;border-left:1px solid currentColor;border-top:1px solid currentColor;transform:rotate(45deg);margin-top:4px}

/* ---------- 11. 页脚 ---------- */
.site-footer{
  position:relative;background:var(--char);border-top:1px solid var(--line);
  padding-block:clamp(56px,7vw,88px) 30px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:9px;
  background:repeating-linear-gradient(to right,var(--line) 0 1px,transparent 1px 34px);
  opacity:.9;
}
.footer-inner{width:100%;max-width:1240px;margin-inline:auto;padding-inline:var(--pad-x)}
.footer-top{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,5vw,64px)}
.footer-brand{min-width:0}
.footer-mark{position:relative;display:block;width:22px;height:22px;border:1px solid var(--cyan);margin-bottom:18px}
.footer-mark::after{content:"";position:absolute;inset:8px;background:var(--orange)}
.footer-lockup{font-family:var(--font-display);font-size:22px;font-weight:300;letter-spacing:.02em;color:var(--white)}
.footer-tagline{margin-top:12px;font-size:15px;color:var(--grey);max-width:34ch}
.footer-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px)}
.footer-col{min-width:0}
.footer-col-title{
  margin-bottom:16px;font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--grey);
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-link{display:inline-block;font-size:14px;color:rgba(237,243,241,.72);transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-link:hover{color:var(--cyan);transform:translateX(4px)}
.footer-bottom{
  margin-top:clamp(36px,5vw,64px);padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:18px;
}
.footer-contact{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;font-size:13px;color:var(--grey)}
.footer-contact-item{display:inline-flex;align-items:center;gap:6px}
.footer-strong{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.02em;color:var(--white)}
.footer-sep{color:var(--line)}
.footer-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}
.footer-legal,.footer-year{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--grey)}
.to-top{
  display:inline-flex;align-items:center;gap:10px;padding-bottom:4px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--grey);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.to-top::before{content:"";width:7px;height:7px;border:1px solid currentColor;transform:rotate(45deg)}
.to-top:hover{color:var(--cyan);border-color:var(--cyan)}

/* ---------- 12. 入场与绘制 ---------- */
[data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}
.chart-line{stroke-dasharray:var(--len,1200);stroke-dashoffset:var(--len,1200)}
.is-visible .chart-line{animation:chart-draw .9s var(--ease) forwards}
@keyframes chart-draw{to{stroke-dashoffset:0}}

/* ---------- 13. 响应式 ---------- */
@media (max-width:1180px){
  .nav-link{padding:10px 10px;font-size:13.5px}
  .btn-ghost{display:none}
}

@media (max-width:1024px){
  .grid--7-5,.grid--8-4{grid-template-columns:minmax(0,1fr)}
  .footer-top{grid-template-columns:minmax(0,1fr)}
}

@media (max-width:960px){
  body.nav-open{overflow:hidden}
  .header-pin{display:none}
  .nav-toggle{display:block}
  .site-nav{
    position:fixed;top:0;right:0;z-index:3;
    width:min(88vw,370px);height:100vh;height:100dvh;
    margin-left:0;padding:calc(var(--header-h) + 14px) 26px 36px;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    background:var(--char);border-left:1px solid var(--line);overflow-y:auto;
    visibility:hidden;transform:translateX(101%);
    transition:transform .34s var(--ease),visibility .34s var(--ease);
  }
  .site-nav[data-open]{transform:translateX(0);visibility:visible}
  .nav-index-label{
    display:block;margin-bottom:18px;
    font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;color:var(--grey);
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{width:100%}
  .nav-link{padding:16px 2px;font-size:19px;gap:14px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-link::before{display:inline-block}
  .nav-link::after{display:none}
  .rail-top{width:42px;height:42px}
}

@media (max-width:720px){
  .footer-columns{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .footer-row{flex-direction:column;align-items:flex-start;gap:14px}
}

@media (max-width:520px){
  .header-inner{gap:10px}
  .brand-sub{display:none}
  .btn-primary{height:38px;padding:0 12px;font-size:12px;letter-spacing:.06em}
  .nav-toggle{width:40px;height:40px}
  .nav-toggle-bar{left:10px;right:10px}
  .nav-toggle-bar:nth-child(1){top:14px}
  .nav-toggle-bar:nth-child(2){top:20px}
  .nav-toggle-bar:nth-child(3){top:26px}
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
  .footer-columns{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 14. 降低动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .header-progress{transition:none}
}