/* =========================================================
   华体育会官方 — 共享样式 /assets/site.css
   色板：深墨绿黑 / 墨绿面板 / 抬升墨绿 / 荧光青 / 柔青 / 暖橙
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,dl,dt,dd,figure,blockquote{margin:0}
ul,ol{list-style:none;padding:0}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;border-spacing:0}
summary{list-style:none}
hr{border:0;margin:0}
input,textarea,select{font:inherit}

/* ---------- 2. 变量 ---------- */
:root{
  --ink-900:#071A16;
  --ink-850:#0A211C;
  --ink-800:#0E2A23;
  --ink-700:#14382F;
  --cyan:#3DF5D4;
  --cyan-dim:#1CBFA6;
  --orange:#FF8A3D;
  --text:#E8F5F0;
  --text-muted:#9DB8B0;
  --text-faint:#5F7D75;
  --line:#1F4A3F;
  --paper:#F4F1E8;
  --paper-line:#DAD3C1;
  --font-display:"Oswald","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-data:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,"Courier New",monospace;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --shell-max:1440px;
  --content-max:1280px;
  --gutter:clamp(16px,4vw,48px);
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- 3. 基础排版 ---------- */
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--text);
  background-color:var(--ink-900);
  background-image:radial-gradient(1100px 380px at 88% -12%,rgba(61,245,212,.09),transparent 62%),
                   radial-gradient(760px 320px at -8% 12%,rgba(28,191,166,.07),transparent 60%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
::selection{background:var(--cyan);color:#04231D}
#main-content{display:block;outline:none}
#main-content:focus-visible{outline:2px solid var(--cyan);outline-offset:-2px}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:700;line-height:1.2;letter-spacing:.01em}
strong,b{font-weight:700}
p{text-wrap:pretty}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 4. 跳转与容器 ---------- */
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:120;
  padding:12px 18px;
  background:var(--cyan);color:#04231D;
  font-family:var(--font-data);font-size:12px;letter-spacing:.14em;
}
.skip-link:focus{left:0}

.container{width:100%;max-width:var(--content-max);margin:0 auto;padding:0 var(--gutter)}
.container--wide{max-width:var(--shell-max)}

.section{padding:clamp(40px,6vw,88px) 0}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px 28px;
  padding-bottom:14px;margin-bottom:clamp(20px,3vw,34px);
  border-bottom:1px solid var(--line);
}
.eyebrow{
  font-family:var(--font-data);font-size:11px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--cyan);
}
.section-title{
  font-weight:200;font-size:clamp(26px,4vw,46px);line-height:1.04;
  letter-spacing:.005em;
}
.section-title strong{font-weight:700;color:var(--cyan)}
.lead{
  max-width:72ch;font-size:clamp(15px,1.4vw,17px);
  color:var(--text-muted);line-height:1.85;
}
.prose{max-width:74ch;color:var(--text-muted)}
.prose p+p{margin-top:1.05em}
.prose h2{font-size:clamp(20px,2.4vw,26px);color:var(--text);margin:1.9em 0 .7em;font-weight:700}
.prose h3{font-size:17px;color:var(--text);margin:1.6em 0 .5em;font-weight:700;letter-spacing:.02em}
.prose ul{display:grid;gap:.5em;margin:1em 0}
.prose li{padding-left:16px;position:relative}
.prose li::before{
  content:"";position:absolute;left:0;top:.85em;
  width:6px;height:1px;background:var(--cyan);
}
.prose a{color:var(--cyan-dim);border-bottom:1px solid var(--line)}
.prose a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.rule{border-top:1px solid var(--line);height:0}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.85em 1.25em;
  border:1px solid var(--line);
  background:transparent;color:var(--text);
  font-family:var(--font-body);font-size:13px;font-weight:600;letter-spacing:.08em;
  line-height:1;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--primary{background:var(--cyan);border-color:var(--cyan);color:#04231D}
.btn--primary:hover{background:#6CFFE5;border-color:#6CFFE5;color:#04231D}
.btn--ghost{background:var(--ink-800);border-color:var(--line);color:var(--text-muted)}
.btn--ghost:hover{background:var(--ink-700);color:var(--cyan)}
.btn--sm{padding:.6em .9em;font-size:12px}
.btn--block{display:flex;width:100%}

/* ---------- 6. 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,26,22,.95);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.header-rail{
  display:flex;align-items:center;gap:14px;
  height:28px;padding:0 var(--gutter);
  border-bottom:1px solid var(--line);
  font-family:var(--font-data);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--text-muted);
  overflow:hidden;white-space:nowrap;
}
.rail-dot{
  flex:none;width:6px;height:6px;background:var(--cyan);
  box-shadow:0 0 8px rgba(61,245,212,.8);
}
.rail-line{flex:1 1 auto;height:1px;min-width:24px;background:var(--line)}
.rail-text{overflow:hidden;text-overflow:ellipsis}
.rail-text--muted{color:var(--text-faint)}

.header-bar{
  position:relative;
  display:flex;align-items:center;gap:clamp(10px,2vw,26px);
  max-width:var(--shell-max);margin:0 auto;
  min-height:68px;padding:0 var(--gutter);
}
.brand{display:inline-flex;align-items:center;gap:12px;flex:none;padding:10px 0}
.brand-mark{display:grid;grid-template-columns:repeat(2,1fr);gap:2px;width:22px;height:22px;flex:none}
.brand-mark i{display:block;background:var(--cyan-dim)}
.brand-mark i:first-child{background:var(--cyan)}
.brand-mark i:last-child{background:var(--orange)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-family:var(--font-display);font-weight:700;font-size:17px;letter-spacing:.07em}
.brand-sub{font-family:var(--font-data);font-size:10px;letter-spacing:.26em;color:var(--text-faint)}

.nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:7px;
  padding:11px 12px;
  font-size:14px;color:var(--text-muted);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-index{font-family:var(--font-data);font-size:10px;letter-spacing:.12em;color:var(--text-faint)}
.nav-link:hover{color:var(--text);background:var(--ink-800)}
.nav-link:hover .nav-index{color:var(--cyan)}
.nav-link[aria-current="page"]{color:var(--text)}
.nav-link[aria-current="page"] .nav-index{color:var(--cyan)}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:1px;
  background:var(--cyan);box-shadow:0 0 9px rgba(61,245,212,.75);
}
.nav-foot{display:none}
.nav-foot-note{
  margin-top:12px;font-family:var(--font-data);font-size:11px;
  letter-spacing:.08em;color:var(--text-faint);
}

.header-actions{display:flex;align-items:center;gap:10px;flex:none}
.header-cta{white-space:nowrap}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 12px;margin-left:auto;
  border:1px solid var(--line);background:var(--ink-800);
  font-family:var(--font-data);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--text);
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan-dim);color:var(--cyan)}
.nav-toggle-bars{display:grid;gap:4px;width:16px;flex:none}
.nav-toggle-bars i{display:block;height:1px;background:var(--cyan);transition:transform .2s var(--ease)}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan);background:var(--ink-700)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:first-child{transform:translateY(2.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:last-child{transform:translateY(-2.5px) rotate(-45deg)}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:rgba(31,74,63,.45);overflow:hidden;pointer-events:none;
}
.scroll-progress-bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan-dim),var(--cyan) 62%,var(--orange));
}

/* ---------- 7. 面包屑、面板、网格 ---------- */
.breadcrumb{padding:clamp(18px,3vw,28px) 0 0}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:4px}
.breadcrumb-item{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-data);font-size:11px;letter-spacing:.14em;
  color:var(--text-faint);
}
.breadcrumb-item+.breadcrumb-item::before{content:"/";color:var(--line)}
.breadcrumb-link{color:var(--text-muted);border-bottom:1px solid transparent}
.breadcrumb-link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

.panel{
  position:relative;
  background:var(--ink-800);
  border:1px solid var(--line);
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.panel--raised{background:var(--ink-700)}
.panel-head{
  display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;
  padding:15px clamp(16px,2.4vw,24px);
  border-bottom:1px solid var(--line);
}
.panel-index{
  font-family:var(--font-data);font-size:11px;letter-spacing:.2em;
  color:var(--cyan);
}
.panel-title{font-size:16px;font-weight:700;letter-spacing:.05em}
.panel-body{padding:clamp(16px,2.4vw,24px)}
.panel-note{
  font-family:var(--font-data);font-size:11px;letter-spacing:.08em;
  color:var(--text-faint);margin-left:auto;
}

.grid{display:grid;gap:clamp(16px,2vw,24px)}
.grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
@media (min-width:880px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
}

.stat{display:flex;flex-direction:column;gap:6px;padding:16px 0;border-top:1px solid var(--line)}
.stat-value{
  font-family:var(--font-data);font-size:clamp(28px,4vw,46px);
  line-height:1.05;color:var(--cyan);letter-spacing:-.01em;
}
.stat-label{
  font-family:var(--font-data);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--text-muted);
}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 8px;
  border:1px solid var(--line);background:var(--ink-700);
  font-family:var(--font-data);font-size:11px;letter-spacing:.14em;
  color:var(--text-muted);
}
.tag--accent{color:var(--cyan);border-color:rgba(61,245,212,.5);background:rgba(61,245,212,.08)}
.tag--orange{color:var(--orange);border-color:rgba(255,138,61,.5);background:rgba(255,138,61,.08)}

.mark{background:linear-gradient(transparent 64%,rgba(255,138,61,.55) 64%);padding:0 .08em}
.mark--cyan{background:linear-gradient(transparent 64%,rgba(61,245,212,.35) 64%)}

/* ---------- 8. 图片容器（页面阶段放置图片）---------- */
.media-frame{
  position:relative;overflow:hidden;
  aspect-ratio:16/9;
  background:var(--ink-700);
  border:1px solid var(--line);
}
.media-frame img{width:100%;height:100%;object-fit:cover;filter:saturate(.92) contrast(1.06)}
.media-frame figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 14px;
  font-family:var(--font-data);font-size:11px;letter-spacing:.12em;
  color:var(--text);
  background:linear-gradient(transparent,rgba(7,26,22,.92));
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}

/* ---------- 9. 表格 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);background:var(--ink-800)}
.data-table{width:100%;min-width:540px;font-size:14px}
.data-table th,.data-table td{
  padding:12px 14px;text-align:left;
  border-bottom:1px solid var(--line);
}
.data-table th{
  font-family:var(--font-data);font-weight:400;font-size:11px;
  letter-spacing:.16em;text-transform:uppercase;
  color:var(--text-muted);background:var(--ink-700);
}
.data-table td{color:var(--text-muted);vertical-align:top}
.data-table tbody tr:hover{background:var(--ink-700)}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table .num{font-family:var(--font-data);font-size:16px;color:var(--cyan)}

/* ---------- 10. 目录与折叠 ---------- */
.toc{border-left:1px solid var(--line);padding-left:16px}
.toc-title{
  font-family:var(--font-data);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--text-muted);margin-bottom:12px;
}
.toc-list{display:grid;gap:7px}
.toc-link{
  font-size:14px;color:var(--text-muted);
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc-link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

.accordion{border:1px solid var(--line);background:var(--ink-800)}
.accordion+.accordion{margin-top:-1px}
.accordion summary{
  display:flex;align-items:center;gap:12px;
  padding:16px 18px;cursor:pointer;
  font-size:15px;color:var(--text);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.accordion summary::-webkit-details-marker{display:none}
.accordion summary::after{
  content:"+";margin-left:auto;
  font-family:var(--font-data);font-size:16px;color:var(--cyan);
}
.accordion[open] summary::after{content:"–"}
.accordion summary:hover{background:var(--ink-700);color:var(--cyan)}
.accordion[open] summary{background:var(--ink-700)}
.accordion-body{
  padding:2px 18px 18px;
  color:var(--text-muted);max-width:74ch;line-height:1.85;
}

/* ---------- 11. 页脚 ---------- */
.site-footer{
  margin-top:clamp(48px,8vw,110px);
  background:var(--ink-850);
  border-top:1px solid var(--line);
}
.footer-inner{
  max-width:var(--shell-max);margin:0 auto;
  padding:clamp(28px,5vw,56px) var(--gutter) 22px;
}
.footer-stack{
  display:grid;grid-template-columns:minmax(0,1fr);
  gap:1px;background:var(--line);
  border:1px solid var(--line);
}
.footer-panel{background:var(--ink-850);padding:clamp(20px,3vw,32px)}
.footer-panel--brand{display:flex;flex-direction:column;gap:24px}

.footer-brand{display:flex;align-items:center;gap:14px}
.footer-mark{
  display:grid;place-items:center;flex:none;
  width:38px;height:38px;
  border:1px solid var(--cyan);
  font-family:var(--font-display);font-weight:200;font-size:20px;
  color:var(--cyan);
}
.footer-name{font-family:var(--font-display);font-weight:700;font-size:18px;letter-spacing:.07em}
.footer-note{
  margin-top:5px;font-family:var(--font-data);font-size:11px;
  letter-spacing:.16em;color:var(--cyan-dim);
}

.footer-contact{display:grid;border-top:1px solid var(--line)}
.footer-contact-item{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px 12px;
  padding:11px 0;border-bottom:1px solid var(--line);
}
.contact-key{
  flex:none;min-width:74px;
  font-family:var(--font-data);font-size:11px;letter-spacing:.16em;
  color:var(--text-faint);
}
.contact-value{
  font-family:var(--font-data);font-size:13px;color:var(--text);
  word-break:break-word;
}
.footer-contact-item--wide .contact-value{
  font-family:var(--font-body);font-size:13.5px;line-height:1.75;color:var(--text-muted);
}
.copy-btn{
  margin-left:auto;flex:none;
  padding:4px 9px;border:1px solid var(--line);
  font-family:var(--font-data);font-size:10px;letter-spacing:.16em;
  color:var(--cyan-dim);cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.copy-btn:hover{color:var(--cyan);border-color:var(--cyan);background:var(--ink-700)}
.copy-btn[data-state="done"]{color:var(--ink-900);background:var(--cyan);border-color:var(--cyan)}

.footer-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.footer-col-title{
  display:flex;align-items:center;gap:8px;
  margin-bottom:14px;
  font-family:var(--font-data);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--text-muted);
}
.footer-col-index{color:var(--cyan)}
.footer-links{display:grid;gap:1px}
.footer-link{
  display:inline-block;padding:6px 0;
  font-size:14px;color:var(--text-muted);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 26px;
  margin-top:20px;padding-top:16px;
  border-top:1px solid var(--line);
  font-family:var(--font-data);font-size:11px;letter-spacing:.1em;
  color:var(--text-muted);
}
.footer-copy,.footer-icp,.footer-legal-note{line-height:1.6}
.footer-legal-note{margin-left:auto;color:var(--text-faint)}

/* ---------- 12. 纸面主题（法律/条款页）---------- */
.theme-paper{
  background-color:var(--paper);
  background-image:none;
  color:#152420;
}
.theme-paper .section-head,
.theme-paper .rule,
.theme-paper .toc,
.theme-paper .stat{border-color:var(--paper-line)}
.theme-paper .section-head{border-bottom-color:var(--paper-line)}
.theme-paper .rule{border-top-color:var(--paper-line)}
.theme-paper .stat{border-top-color:var(--paper-line)}
.theme-paper .lead,
.theme-paper .prose,
.theme-paper .prose p{color:#3B4C46}
.theme-paper .prose h2,
.theme-paper .prose h3,
.theme-paper .section-title{color:#0B241E}
.theme-paper .panel{background:#FFFDF7;border-color:var(--paper-line)}
.theme-paper .panel-head{border-bottom-color:var(--paper-line)}
.theme-paper .panel-note,
.theme-paper .toc-title{color:#6C7A72}
.theme-paper .toc-link{color:#3B4C46}
.theme-paper .toc-link:hover{color:#0E7A66;border-bottom-color:#0E7A66}
.theme-paper .accordion{background:#FFFDF7;border-color:var(--paper-line)}
.theme-paper .accordion summary{color:#0B241E}
.theme-paper .accordion[open] summary,
.theme-paper .accordion summary:hover{background:#EFEADC}
.theme-paper .accordion-body{color:#3B4C46}
.theme-paper .data-table th{background:#EFEADC;color:#4B5B54}
.theme-paper .data-table td{color:#2E3B36}
.theme-paper .data-table th,
.theme-paper .data-table td{border-bottom-color:var(--paper-line)}
.theme-paper .eyebrow{color:#0E7A66}
.theme-paper .btn{border-color:var(--paper-line);color:#152420}
.theme-paper .btn--primary{background:#0E7A66;border-color:#0E7A66;color:#F4F1E8}

/* ---------- 13. 显现动效 ---------- */
.js-ready [data-reveal]{
  opacity:0;transform:translateY(12px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.js-ready [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 14. 响应式 ---------- */
@media (max-width:1120px){
  .nav-link{padding:10px 9px;font-size:13.5px}
  .nav-index{font-size:9.5px}
}
@media (max-width:960px){
  .header-bar{justify-content:space-between}
  .header-actions{display:none}
  .nav-toggle{display:inline-flex}
  .nav{
    position:absolute;top:100%;left:0;right:0;
    display:none;margin-left:0;
    max-height:calc(100vh - 96px);overflow-y:auto;
    background:var(--ink-800);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding:4px 0 20px;
  }
  .nav[data-open]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{border-bottom:1px solid var(--line)}
  .nav-item:last-child{border-bottom:0}
  .nav-link{width:100%;padding:16px var(--gutter);font-size:16px;align-items:center}
  .nav-link[aria-current="page"]{background:var(--ink-700);color:var(--cyan)}
  .nav-link[aria-current="page"]::after{
    left:0;right:auto;top:0;bottom:0;width:2px;height:auto;
    box-shadow:0 0 10px rgba(61,245,212,.8);
  }
  .nav-foot{display:block;padding:18px var(--gutter) 0}
}
@media (max-width:900px){
  .footer-stack{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:700px){
  .rail-text--muted{display:none}
  .header-rail{letter-spacing:.14em}
}
@media (max-width:520px){
  .footer-cols{grid-template-columns:minmax(0,1fr);gap:20px}
  .contact-key{width:100%;min-width:0}
  .copy-btn{margin-left:0}
  .footer-legal-note{margin-left:0;width:100%}
}

/* ---------- 15. 减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js-ready [data-reveal]{opacity:1;transform:none}
}