/* ============================================================
   YOBO 中国区 · 赛事档案室
   /assets/site.css — 共享外壳样式
   1 变量 / 2 Reset / 3 排版 / 4 跳转链接 / 5 头部 / 6 页脚
   7 按钮 / 8 容器与面板 / 9 通用组件 / 10 响应式与降级
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#0B0F0D;
  --deep:#0F2A22;
  --moss:#315C4C;
  --stone:#8A9188;
  --paper:#E9E3D3;
  --lime:#C7FF3D;
  --yellow:#F2C230;
  --red:#D94A3D;
  --clay:#B46A4F;
  --sage:#C9D3C6;

  --shell:1200px;
  --hd-h:70px;
  --edge:1px solid rgba(233,227,211,.14);
  --edge-moss:1px solid var(--moss);

  --font-head:"Barlow Condensed","HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --ease:cubic-bezier(.32,.72,.28,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100%;
  background-color:var(--ink);
  background-image:
    repeating-linear-gradient(118deg,rgba(199,255,61,.028) 0 1px,transparent 1px 140px),
    radial-gradient(120% 70% at 88% -12%,rgba(15,42,34,.92),transparent 62%);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
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;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}

/* ---------- 3. 中文排版 ---------- */
h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:900;
  line-height:1.08;
  letter-spacing:-.01em;
  color:var(--paper);
  text-wrap:balance;
}
h1{font-size:clamp(34px,6vw,72px)}
h2{font-size:clamp(26px,3.6vw,44px)}
h3{font-size:clamp(20px,2.2vw,26px);line-height:1.2}
h4{font-size:clamp(17px,1.6vw,20px);line-height:1.3}
small{font-size:12.5px}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.num-xl{
  display:block;
  font-family:var(--font-mono);
  font-weight:600;
  font-size:clamp(38px,7vw,72px);
  line-height:.9;
  letter-spacing:-.04em;
  color:var(--lime);
}

/* ---------- 4. 跳至主要内容 ---------- */
.skip-link{
  position:fixed;
  top:-140px;
  left:16px;
  z-index:300;
  padding:12px 18px;
  background:var(--lime);
  color:var(--ink);
  font-family:var(--font-head);
  font-weight:800;
  font-size:15px;
  letter-spacing:.02em;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- 5. 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  color:var(--paper);
  background:rgba(11,15,13,.42);
  -webkit-backdrop-filter:blur(12px) saturate(130%);
  backdrop-filter:blur(12px) saturate(130%);
  border-bottom:var(--edge);
  transition:background-color .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-stuck{
  background:var(--deep);
  border-bottom-color:var(--moss);
  box-shadow:0 18px 40px -28px #000;
  -webkit-backdrop-filter:none;
  backdrop-filter:none;
}
.hd-progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  overflow:hidden;
  pointer-events:none;
}
.hd-progress-bar{
  display:block;
  width:100%;height:100%;
  background:var(--lime);
  transform-origin:0 50%;
  transform:scaleX(var(--scroll-progress,0));
  transition:transform .12s linear;
}
.hd-strip{
  background:rgba(15,42,34,.72);
  border-bottom:1px solid rgba(233,227,211,.08);
  transition:background-color .28s var(--ease);
}
.site-header.is-stuck .hd-strip{background:rgba(11,15,13,.34)}
.hd-strip-in{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  min-height:32px;
}
.hd-strip-line{
  display:flex;
  align-items:center;
  gap:7px;
  font-family:var(--font-mono);
  font-size:10.5px;
  line-height:1;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--sage);
}
.hd-sep{color:var(--lime);letter-spacing:0}
.hd-strip-meta{
  display:none;
  font-family:var(--font-mono);
  font-size:10.5px;
  line-height:1;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--stone);
  white-space:nowrap;
}
.hd-main{display:block}
.hd-main-in{
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,26px);
  min-height:var(--hd-h);
}
.hd-brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  padding-block:11px;
  transition:opacity .18s var(--ease);
}
.hd-brand:hover{opacity:.86}
.hd-brand-mark{
  display:grid;
  place-items:center;
  flex:0 0 auto;
  width:42px;height:42px;
  background:var(--lime);
  color:var(--ink);
  font-family:var(--font-head);
  font-weight:900;
  font-size:15px;
  line-height:1;
  letter-spacing:-.01em;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 11px),calc(100% - 11px) 100%,0 100%);
}
.hd-brand-text{display:block;line-height:1.15}
.hd-brand-name{
  display:block;
  font-family:var(--font-head);
  font-weight:900;
  font-size:17px;
  letter-spacing:.01em;
  color:var(--paper);
  white-space:nowrap;
}
.hd-brand-line{
  display:block;
  margin-top:3px;
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--stone);
  white-space:nowrap;
}
.nav{display:flex;align-items:center;margin-left:auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{display:flex}
.nav-link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:6px;
  padding:11px 10px;
  font-size:14px;
  font-weight:600;
  line-height:1;
  color:var(--sage);
  transition:color .18s var(--ease);
}
.nav-index{
  font-family:var(--font-mono);
  font-size:9.5px;
  font-weight:400;
  letter-spacing:0;
  color:var(--stone);
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:10px;right:10px;bottom:4px;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .22s var(--ease);
}
.nav-link:hover,.nav-link:focus-visible{color:var(--paper)}
.nav-link:hover .nav-index,.nav-link:focus-visible .nav-index{color:var(--lime)}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--lime)}
.nav-link[aria-current="page"] .nav-index{color:var(--lime)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.hd-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.hd-cta{margin-left:6px}
.nav-toggle{
  display:none;
  align-items:center;
  gap:7px;
  padding:10px 12px;
  border:1px solid rgba(233,227,211,.3);
  background:rgba(15,42,34,.75);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle-text{white-space:nowrap}
.nav-toggle-glyph{
  position:relative;
  display:block;
  width:16px;height:2px;
  background:currentColor;
  transition:background-color .2s var(--ease);
}
.nav-toggle-glyph::before,.nav-toggle-glyph::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;height:2px;
  background:currentColor;
  transition:transform .22s var(--ease);
}
.nav-toggle-glyph::before{top:-5px}
.nav-toggle-glyph::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle-glyph{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-glyph::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-glyph::after{transform:translateY(-5px) rotate(-45deg)}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(60px,8vw,120px);
  background:var(--ink);
  border-top:1px solid var(--moss);
  color:var(--sage);
}
.site-footer::before{
  content:"";
  display:block;
  height:4px;
  background:linear-gradient(90deg,var(--lime) 0 16%,var(--yellow) 16% 24%,var(--clay) 24% 30%,var(--moss) 30% 100%);
}
.ft-top{
  display:grid;
  gap:clamp(26px,4vw,54px);
  padding-block:clamp(34px,5vw,60px);
}
.ft-brand{min-width:0}
.ft-mark{
  font-family:var(--font-head);
  font-weight:900;
  font-size:40px;
  line-height:.9;
  letter-spacing:-.02em;
  color:var(--paper);
}
.ft-brand-name{margin-top:12px;font-size:14px;font-weight:600;color:var(--paper)}
.ft-brand-line{
  margin-top:5px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--stone);
}
.ft-note{margin-top:14px;font-size:13.5px;line-height:1.7;color:var(--sage);max-width:32ch}
.ft-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 18px}
.ft-col{min-width:0}
.ft-col-title{
  margin-bottom:10px;
  padding-bottom:8px;
  border-bottom:1px solid rgba(233,227,211,.14);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--stone);
}
.ft-link{
  display:inline-block;
  padding:5px 0;
  font-size:14px;
  color:var(--sage);
  transition:color .16s var(--ease),transform .16s var(--ease);
}
.ft-link:hover,.ft-link:focus-visible{color:var(--lime);transform:translateX(3px)}
.ft-bottom{
  display:grid;
  gap:20px;
  padding-block:24px 34px;
  border-top:1px solid rgba(233,227,211,.14);
}
.ft-contact{display:grid;gap:6px}
.ft-contact-row{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px;font-size:13px;line-height:1.6}
.ft-label{
  flex:0 0 auto;
  min-width:78px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--stone);
}
.ft-value{color:var(--paper);font-size:13.5px;letter-spacing:.01em}
.ft-legal{display:grid;gap:6px;font-size:12.5px;line-height:1.65;color:var(--stone)}
.ft-copy{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--sage);
}

/* ---------- 7. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 22px;
  border:1px solid var(--moss);
  background:var(--deep);
  color:var(--paper);
  font-family:var(--font-head);
  font-weight:800;
  font-size:15px;
  line-height:1;
  letter-spacing:.03em;
  text-align:center;
  cursor:pointer;
  transition:transform .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--lime{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.btn--lime:hover{background:#d8ff72;border-color:#d8ff72}
.btn--ghost{background:transparent;border-color:rgba(233,227,211,.32);color:var(--paper)}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime)}
.btn--sm{padding:9px 14px;font-size:13px}
.btn--block{width:100%}

/* ---------- 8. 容器 / 面板 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:clamp(18px,4vw,48px)}
main{display:block}
#main-content{scroll-margin-top:calc(var(--hd-h) + 46px)}
.panel{
  position:relative;
  border:var(--edge-moss);
  background:linear-gradient(180deg,rgba(15,42,34,.9),rgba(11,15,13,.94));
  padding:clamp(20px,3vw,34px);
  box-shadow:0 24px 48px -36px #000;
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.panel--paper{background:var(--paper);border-color:#0B0F0D;color:var(--ink)}
.panel--paper h2,.panel--paper h3,.panel--paper h4{color:var(--ink)}
.panel--flush{padding:0}
.panel--cut{clip-path:polygon(0 0,100% 0,100% calc(100% - 26px),calc(100% - 26px) 100%,0 100%)}
.panel--hover:hover{transform:translateY(-2px);border-color:var(--lime)}
.stack{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
@media (min-width:760px){.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:980px){.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}}

/* ---------- 9. 通用组件 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--lime);
}
.eyebrow::before{content:"";width:22px;height:2px;background:currentColor}
.section-title{font-size:clamp(26px,3.6vw,42px);line-height:1.06}
.rule{height:1px;border:0;margin-block:clamp(20px,3vw,32px);background:rgba(233,227,211,.14)}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 9px;
  border:1px solid var(--moss);
  background:rgba(49,92,76,.35);
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.4;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--sage);
}
.tag--lime{border-color:var(--lime);background:rgba(199,255,61,.1);color:var(--lime)}
.tag--yellow{border-color:var(--yellow);background:rgba(242,194,48,.1);color:var(--yellow)}
.tag--red{border-color:var(--red);background:rgba(217,74,61,.12);color:var(--red)}
.crumbs{padding-block:16px}
.crumbs ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--stone);
}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li:not(:last-child)::after{content:"/";color:var(--moss)}
.crumbs a{transition:color .16s var(--ease)}
.crumbs a:hover{color:var(--lime)}
.crumbs [aria-current="page"]{color:var(--sage);letter-spacing:.08em}
.prose{
  max-width:68ch;
  font-size:16.5px;
  line-height:1.8;
  color:var(--sage);
}
.prose > * + *{margin-top:1.1em}
.prose h2,.prose h3,.prose h4{color:var(--paper);margin-top:1.7em}
.prose h2 + *,.prose h3 + *,.prose h4 + *{margin-top:.6em}
.prose strong{color:var(--paper)}
.prose a{color:var(--lime);border-bottom:1px solid rgba(199,255,61,.4);transition:border-color .16s var(--ease)}
.prose a:hover{border-bottom-color:var(--lime)}
.prose ul li{position:relative;padding-left:20px}
.prose ul li + li{margin-top:.5em}
.prose ul li::before{content:"";position:absolute;left:0;top:.75em;width:7px;height:7px;background:var(--moss)}
.prose ol{list-style:decimal;padding-left:22px}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--lime);
  border-bottom:1px solid transparent;
  transition:border-color .16s var(--ease);
}
.link-more::after{content:"→";transition:transform .18s var(--ease)}
.link-more:hover{border-bottom-color:var(--lime)}
.link-more:hover::after{transform:translateX(4px)}

/* 图片容器基础规则（供页面阶段放置媒体） */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--moss);
  background:
    repeating-linear-gradient(135deg,rgba(49,92,76,.5) 0 8px,rgba(15,42,34,.78) 8px 16px);
}
.media > img,.media > picture > img{width:100%;height:100%;object-fit:cover}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--3x4{aspect-ratio:3/4}
.media--tall{aspect-ratio:21/9}
.media__tag{
  position:absolute;
  left:0;bottom:0;
  padding:6px 10px;
  background:var(--yellow);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:10.5px;
  line-height:1.3;
  letter-spacing:.14em;
  text-transform:uppercase;
}
.media__frame{position:absolute;inset:8px;border:1px solid rgba(233,227,211,.28);pointer-events:none}

/* ---------- 10. 响应式 ---------- */
@media (min-width:700px){
  .hd-strip-meta{display:block}
}
@media (min-width:860px){
  .ft-top{grid-template-columns:minmax(230px,.85fr) 2fr;align-items:start}
  .ft-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
  .ft-bottom{grid-template-columns:1.15fr 1fr;gap:36px;align-items:start}
}
@media (max-width:960px){
  .nav-toggle{display:inline-flex}
  .nav{
    position:absolute;
    left:0;right:0;top:100%;
    display:block;
    margin-left:0;
    max-height:72vh;
    overflow-y:auto;
    padding:10px clamp(18px,4vw,48px) 22px;
    background:var(--deep);
    border-top:1px solid var(--moss);
    border-bottom:1px solid var(--moss);
    box-shadow:0 30px 50px -30px #000;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s linear;
  }
  .nav[data-open="true"]{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{display:block}
  .nav-link{
    padding:15px 12px;
    font-size:16px;
    font-weight:600;
    border-bottom:1px solid rgba(233,227,211,.1);
  }
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{box-shadow:inset 3px 0 0 var(--lime);background:rgba(199,255,61,.06)}
  .hd-cta{margin-left:0}
}
@media (max-width:600px){
  .hd-cta{display:none}
  .hd-brand-mark{width:38px;height:38px;font-size:13px}
  .hd-brand-name{font-size:15px}
  .hd-brand-line{font-size:8.5px;letter-spacing:.1em}
  .nav-toggle-text{display:none}
  .ft-mark{font-size:32px}
  .ft-label{min-width:auto}
}
@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;
  }
}