/* ============================================================
   EMC体育 · 共享样式 /assets/site.css
   深墨绿底 + 炭黑卡片 + 荧光青柠/电子橙状态色
   ============================================================ */

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

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#0B1F1A;
  --charcoal:#111315;
  --slate:#1C2A2E;
  --fog:#F2F4F1;
  --steel:#7A8CA3;
  --line:#3A474C;
  --lime:#C6FF3D;
  --orange:#FF6A1A;
  --lime-soft:#E8FFB0;
  --fog-80:rgba(242,244,241,.8);
  --fog-64:rgba(242,244,241,.64);

  --max:1280px;
  --gutter:24px;
  --rail:320px;
  --header-h:88px;
  --bevel:14px;

  --mono:ui-monospace,"JetBrains Mono","IBM Plex Mono",SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --ease:cubic-bezier(.2,.6,.3,1);
}

/* ---------- 3. 基础排版 ---------- */
body{
  font-family:var(--sans);
  font-size:16px;
  line-height:1.62;
  background-color:var(--ink);
  color:var(--fog);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body[data-nav-open]{overflow:hidden}

h1,h2,h3,h4{font-weight:900;letter-spacing:-.02em}
h1{font-size:clamp(40px,7vw,76px);line-height:1.02}
h2{font-size:clamp(26px,3.4vw,38px);line-height:1.14;font-weight:900}
h3{font-size:clamp(18px,2vw,22px);line-height:1.32;font-weight:800}
h4{font-size:16px;line-height:1.4;font-weight:800}

p{max-width:64ch}
strong{color:var(--fog);font-weight:800}
::selection{background:var(--lime);color:var(--ink)}

.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.text-lime{color:var(--lime)}
.text-orange{color:var(--orange)}
.text-steel{color:var(--steel)}

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

:focus-visible{outline:2px solid var(--lime);outline-offset:2px}

.skip-link{
  position:absolute;top:-72px;left:16px;z-index:200;
  display:inline-block;padding:10px 16px;
  font-family:var(--mono);font-size:13px;letter-spacing:.04em;
  background:var(--lime);color:var(--ink);font-weight:700;
  transition:top .16s var(--ease);
}
.skip-link:focus{top:16px}

/* ---------- 4. 容器与栅格 ---------- */
.container{
  width:100%;max-width:var(--max);
  margin-inline:auto;padding-inline:var(--gutter);
}
.container--narrow{max-width:900px}
.page-top{padding-top:var(--header-h)}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gutter);
}
.col-main{grid-column:1 / span 8;min-width:0}
.col-aside{grid-column:9 / span 4;min-width:0}
.rail{position:sticky;top:calc(var(--header-h) + 16px)}

.section-head{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  align-items:baseline;
  gap:16px;
  padding-top:14px;
  border-top:1px solid var(--line);
  margin-bottom:24px;
}
.section-index{
  font-family:var(--mono);font-size:13px;letter-spacing:.1em;
  color:var(--lime);
}
.section-title{font-size:clamp(24px,3vw,34px);font-weight:900}
.section-note{font-size:14px;color:var(--steel);grid-column:1 / -1;margin-top:-6px}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:9px 15px;
  font-family:var(--mono);font-size:13px;letter-spacing:.04em;font-weight:600;
  color:var(--fog);
  background-color:transparent;
  border:1px solid var(--line);
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.btn:hover{background-color:rgba(198,255,61,.12);border-color:var(--lime);color:var(--lime)}
.btn-primary{
  background-color:var(--orange);border-color:var(--orange);color:#160B04;font-weight:700;
}
.btn-primary:hover{background-color:#ff8347;border-color:#ff8347;color:#160B04}
.btn-lime{
  background-color:var(--lime);border-color:var(--lime);color:var(--ink);font-weight:700;
}
.btn-lime:hover{background-color:var(--lime-soft);border-color:var(--lime-soft);color:var(--ink)}
.btn-ghost{background-color:transparent;border-color:var(--line);color:var(--fog-80)}
.btn-sm{padding:6px 11px;font-size:12px}

/* ---------- 6. 标签系统 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;
  font-family:var(--mono);font-size:12px;line-height:1.5;letter-spacing:.04em;
  border:1px solid var(--line);
  color:var(--steel);
  white-space:nowrap;
}
.tag-live{
  background-color:var(--lime);border-color:var(--lime);color:var(--ink);font-weight:700;
  animation:tagPulse 4s ease-in-out infinite;
}
.tag-alert{border-color:var(--orange);color:var(--orange);font-weight:700}
.tag-hl{background-color:var(--lime-soft);border-color:var(--lime-soft);color:var(--ink);font-weight:700}
.tag-line{border-color:var(--line);color:var(--steel)}
@keyframes tagPulse{0%,86%,100%{opacity:1}92%{opacity:.42}}
.tag[data-tip]{position:relative;cursor:help}
.tag[data-tip]::after{
  content:attr(data-tip);
  position:absolute;left:0;bottom:calc(100% + 8px);z-index:60;
  width:max-content;max-width:260px;white-space:normal;
  padding:8px 10px;
  font-family:var(--sans);font-size:12.5px;line-height:1.6;letter-spacing:0;
  background-color:var(--ink);border:1px solid var(--lime);color:var(--fog);
  opacity:0;visibility:hidden;transform:translateY(4px);pointer-events:none;
  transition:opacity .16s var(--ease),transform .16s var(--ease),visibility .16s;
}
.tag[data-tip]:hover::after,
.tag[data-tip]:focus-visible::after{opacity:1;visibility:visible;transform:none}

/* ---------- 7. 头部 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  color:var(--fog);
  background-color:transparent;
  background-image:linear-gradient(180deg,rgba(11,31,26,.95) 0%,rgba(11,31,26,.74) 58%,rgba(11,31,26,0) 100%);
  border-bottom:1px solid transparent;
  transition:background-color .2s var(--ease),border-color .2s var(--ease);
}
.site-header[data-scrolled="true"]{
  background-image:none;
  background-color:var(--ink);
  border-bottom-color:var(--line);
}
.header-rail{
  max-width:var(--max);margin-inline:auto;
  padding:8px var(--gutter) 0;
  display:flex;justify-content:flex-end;
}
.rail-status{
  display:inline-flex;align-items:center;gap:8px;
  padding:3px 10px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;
  color:var(--steel);
  background-color:rgba(17,19,21,.62);
  border:1px solid var(--line);
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));
}
.status-dot{
  width:6px;height:6px;flex:0 0 auto;
  background-color:var(--lime);
  animation:tagPulse 4s ease-in-out infinite;
}
.header-inner{
  max-width:var(--max);margin-inline:auto;
  padding:10px var(--gutter) 12px;
  display:flex;align-items:center;gap:26px;
}

/* 品牌 */
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  padding:7px 9px;
  font-family:var(--mono);font-size:14px;font-weight:700;letter-spacing:.08em;
  background-color:var(--lime);color:var(--ink);
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,0 100%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.14}
.brand-name{font-size:17px;font-weight:900;letter-spacing:-.01em}
.brand-tagline{
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--steel);
}

/* 导航 */
.primary-nav{flex:1 1 auto;display:flex;justify-content:center}
.nav-list{display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 12px;
  font-size:14px;font-weight:600;color:var(--fog-80);
  transition:color .16s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background-color:var(--lime);
  transform:scaleX(0);transform-origin:left;
  transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--fog)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--lime)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-actions{display:none}

/* 汉堡按钮 */
.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 12px;
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--fog);
  border:1px solid var(--line);
  margin-left:auto;
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle-bars{display:inline-flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle-bars span{
  display:block;height:2px;background-color:var(--lime);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.site-header[data-open] .nav-toggle-bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars span:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle-bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 阅读进度 */
.scroll-progress{height:2px;overflow:hidden;background-color:transparent}
.scroll-progress-bar{
  display:block;height:100%;width:0;
  background-image:linear-gradient(90deg,var(--lime),var(--orange));
}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  background-color:var(--charcoal);
  color:var(--fog);
  border-top:1px solid var(--line);
}
.footer-inner{
  max-width:var(--max);margin-inline:auto;
  padding:56px var(--gutter) 28px;
  display:grid;
  grid-template-columns:minmax(240px,1.1fr) 2fr 1.2fr;
  gap:40px 32px;
}
.footer-lead .brand{margin-bottom:16px}
.brand--footer .brand-mark{background-color:transparent;border:1px solid var(--lime);color:var(--lime)}
.footer-slogan{font-size:19px;font-weight:900;letter-spacing:-.02em;margin-bottom:8px}
.footer-note{font-size:13.5px;line-height:1.72;color:var(--steel);max-width:34ch}

.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.footer-col-title{
  font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--lime);
  padding-bottom:8px;margin-bottom:14px;
  border-bottom:1px solid var(--line);
}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-link{
  font-size:14px;color:var(--fog-80);
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-link:hover{color:var(--lime);border-bottom-color:var(--lime)}

.contact-list{display:flex;flex-direction:column;gap:12px}
.contact-item{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;align-items:baseline}
.contact-key{
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--steel);
}
.contact-value{font-size:13.5px;color:var(--fog-80);word-break:break-word}

.footer-base{
  max-width:var(--max);margin-inline:auto;
  padding:18px var(--gutter) 34px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px 28px;
  align-items:center;justify-content:space-between;
}
.footer-legal{
  display:flex;flex-wrap:wrap;gap:14px;
  font-family:var(--mono);font-size:12px;color:var(--steel);
}
.footer-base-note{font-size:12px;line-height:1.7;color:var(--steel);max-width:72ch}

/* ---------- 9. 面包屑 ---------- */
.breadcrumbs{padding:20px 0 4px}
.breadcrumbs-list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;color:var(--steel);
}
.breadcrumb-link{color:var(--steel);transition:color .16s var(--ease)}
.breadcrumb-link:hover{color:var(--lime)}
.crumb-sep{color:var(--line)}
.breadcrumb-current{color:var(--fog)}

/* ---------- 10. 正文容器 ---------- */
.prose{max-width:38em;font-size:16px;line-height:1.62;color:var(--fog-80)}
.prose p+p{margin-top:1em}
.prose h2{margin:1.5em 0 .5em;font-size:clamp(22px,2.4vw,28px)}
.prose h3{margin:1.3em 0 .4em;font-size:18px}
.prose ul{list-style:disc;padding-left:1.25em;margin:1em 0}
.prose li+li{margin-top:.4em}
.prose a{color:var(--lime);border-bottom:1px solid var(--line)}
.prose a:hover{border-bottom-color:var(--lime)}
.prose strong{color:var(--lime-soft)}

/* ---------- 11. 基础组件 ---------- */
.card{
  background-color:var(--charcoal);
  border:1px solid var(--line);
  padding:20px;
  transition:border-color .16s var(--ease),background-color .16s var(--ease);
}
.card:hover{border-color:var(--lime)}
.card-bevel{
  clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,0 100%);
}
.card-meta{
  display:flex;flex-wrap:wrap;gap:12px;
  font-family:var(--mono);font-size:12px;color:var(--steel);
  margin-bottom:10px;
}
.card-title{font-size:19px;font-weight:800;line-height:1.35;margin-bottom:8px}
.card-text{font-size:14.5px;line-height:1.6;color:var(--fog-80);max-width:44ch}

.row-list{border-top:1px solid var(--line)}
.row-item{
  display:grid;grid-template-columns:minmax(0,1fr) auto;
  gap:6px 20px;align-items:baseline;
  padding:16px 0;
  border-bottom:1px solid var(--line);
  transition:background-color .16s var(--ease),padding-left .16s var(--ease);
}
.row-item:hover{background-color:var(--slate);padding-left:12px}
.row-title{font-size:16.5px;font-weight:700;line-height:1.4}
.row-meta{font-family:var(--mono);font-size:12px;color:var(--steel)}

.panel{background-color:var(--slate);border:1px solid var(--line);padding:18px}
.panel-title{
  display:block;margin-bottom:12px;
  font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--lime);
}

/* 折叠内容组 */
.accordion{border-top:1px solid var(--line)}
.accordion-item{border-bottom:1px solid var(--line)}
.accordion-trigger{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 0;text-align:left;
  font-size:17px;font-weight:800;line-height:1.4;
  transition:color .16s var(--ease);
}
.accordion-trigger:hover{color:var(--lime)}
.accordion-icon{flex:0 0 auto;font-family:var(--mono);font-size:16px;color:var(--lime)}
.accordion-icon::before{content:"+"}
.accordion-trigger[aria-expanded="true"] .accordion-icon{color:var(--orange)}
.accordion-trigger[aria-expanded="true"] .accordion-icon::before{content:"–"}
.accordion-panel{
  display:grid;grid-template-rows:0fr;
  transition:grid-template-rows .22s var(--ease);
}
.accordion-panel[data-open]{grid-template-rows:1fr}
.accordion-body{overflow:hidden;min-height:0}
.accordion-body-inner{
  padding-bottom:18px;max-width:62ch;
  font-size:15px;line-height:1.7;color:var(--fog-80);
}

/* 两步筛选 */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:16px 32px;align-items:flex-end;
  padding:16px 0;margin-bottom:24px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.filter-group{display:flex;flex-direction:column;gap:8px}
.filter-label{
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--steel);
}
.filter-options{display:flex;flex-wrap:wrap;gap:8px}
.filter-btn{
  padding:6px 12px;
  font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;
  color:var(--fog-80);
  border:1px solid var(--line);
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.filter-btn:hover{border-color:var(--lime);color:var(--lime)}
.filter-btn[aria-pressed="true"]{
  background-color:var(--lime);border-color:var(--lime);color:var(--ink);font-weight:700;
}
.filter-count{
  font-family:var(--mono);font-size:12px;color:var(--steel);
  margin-left:auto;
}
.filter-count strong{color:var(--lime);font-size:15px}
.is-filtered-out{display:none!important}

/* ---------- 12. 图片容器 ---------- */
.media-frame{
  position:relative;display:block;overflow:hidden;
  background-color:var(--slate);
  border:1px solid var(--line);
}
.media-frame > img,
.media-frame > video,
.media-frame > svg{
  width:100%;height:100%;object-fit:cover;
  filter:saturate(.92) contrast(1.06);
}
.media-frame--16x9{aspect-ratio:16 / 9}
.media-frame--4x3{aspect-ratio:4 / 3}
.media-frame--3x4{aspect-ratio:3 / 4}
.media-frame--1x1{aspect-ratio:1 / 1}
.media-frame--21x9{aspect-ratio:21 / 9}
.media-frame--bevel{
  clip-path:polygon(0 0,calc(100% - 24px) 0,100% 24px,100% 100%,0 100%);
}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 12px;
  font-family:var(--mono);font-size:12px;color:var(--fog-80);
  background-image:linear-gradient(0deg,rgba(11,31,26,.92),rgba(11,31,26,0));
}

/* ---------- 13. 显现动效 ---------- */
html[data-js] [data-reveal]{
  opacity:0;transform:translateY(12px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
html[data-js] [data-reveal][data-revealed]{opacity:1;transform:none}

/* ---------- 14. 响应式 ---------- */
@media (max-width:1024px){
  .col-main,.col-aside{grid-column:1 / -1}
  .rail{position:static;top:auto}
  .footer-inner{grid-template-columns:1fr 1fr;gap:36px 28px}
  .footer-lead{grid-column:1 / -1}
  .footer-contact{grid-column:1 / -1}
  .footer-nav{grid-template-columns:repeat(3,minmax(0,1fr))}
}

@media (max-width:900px){
  :root{--gutter:18px;--header-h:64px}
  .header-rail{display:none}
  .header-inner{position:relative;z-index:90;gap:12px;padding:12px var(--gutter)}
  .header-actions{display:none}
  .nav-toggle{display:inline-flex}
  .scroll-progress{position:relative;z-index:95}

  .primary-nav{
    position:fixed;top:0;left:0;right:0;bottom:0;z-index:70;
    display:flex;flex-direction:column;justify-content:center;gap:18px;
    padding:calc(var(--header-h) + 28px) var(--gutter) 36px;
    background-color:var(--ink);
    border-top:1px solid var(--line);
    overflow-y:auto;
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-10px);
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s linear;
  }
  .primary-nav[data-open]{
    opacity:1;visibility:visible;pointer-events:auto;transform:none;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{border-bottom:1px solid var(--line)}
  .nav-link{display:block;padding:16px 4px;font-size:22px;font-weight:900;letter-spacing:-.01em}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{
    color:var(--lime);
    padding-left:14px;
    border-left:3px solid var(--lime);
  }
  .nav-actions{display:flex;flex-direction:column;gap:10px;margin-top:10px}
  .nav-actions .btn{padding:14px 18px;font-size:14px}
  .site-header[data-open]{
    background-image:none;background-color:var(--ink);border-bottom-color:var(--line);
  }

  .section-head{grid-template-columns:auto minmax(0,1fr);gap:12px}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-inner{padding-top:40px}
  .filter-count{margin-left:0;width:100%}
}

@media (max-width:560px){
  .footer-inner{grid-template-columns:1fr;gap:32px}
  .footer-nav{grid-template-columns:1fr;gap:28px}
  .footer-base{padding-bottom:28px}
  .row-item{grid-template-columns:1fr}
  .filter-bar{gap:14px 20px}
  .prose{font-size:15.5px}
}

/* ---------- 15. 无障碍：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;
  }
  html[data-js] [data-reveal]{opacity:1!important;transform:none!important}
}