/* =========================================================
   完美体育 CN · 共享站点样式 /assets/site.css
   深空蓝黑 + 电光青 + 高亮橙 · 侧边轨道 + 纵向长卷
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
img,svg,video{display:block;max-width:100%}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
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%}

/* ---------- 2. Tokens ---------- */
:root{
  --void:#060A12;
  --panel:#0D1726;
  --paper:#F4EBDD;
  --deep:#131A22;
  --cyan:#22E5E5;
  --orange:#FF7A1A;
  --lime:#B8FF3C;
  --mist:#9AA7B4;
  --red:#E5482D;
  --white:#F7FAFC;
  --line:rgba(154,167,180,.2);
  --line-strong:rgba(154,167,180,.34);
  --font-display:'Arial Narrow','PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  --font-mono:'Roboto Mono','SFMono-Regular','Consolas',monospace;
  --rail-w:270px;
  --header-h:62px;
  --gap:clamp(16px,2.2vw,28px);
  --edge:clamp(18px,4vw,56px);
  --cut:16px;
}

/* ---------- 3. Base ---------- */
body{
  min-height:100vh;
  background:var(--void);
  color:var(--white);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.65;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a,button{-webkit-tap-highlight-color:transparent}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
::selection{background:var(--cyan);color:var(--deep)}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.12;letter-spacing:-.01em}
#main-content{scroll-margin-top:calc(var(--header-h) + 12px)}
body.is-nav-open{overflow:hidden}

/* ---------- 4. Utilities ---------- */
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 var(--edge)}
.section{padding:clamp(44px,6vw,92px) 0}
.section-title{font-size:clamp(24px,3.4vw,40px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.22em;
  color:var(--cyan);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--orange)}
.display-num{
  display:block;font-family:var(--font-mono);font-weight:700;
  font-size:clamp(56px,9vw,140px);line-height:.9;letter-spacing:-.04em;
  font-variant-numeric:tabular-nums;
}
.prose{max-width:64ch;font-size:clamp(15.5px,1.1vw,17.5px);line-height:1.78;color:rgba(247,250,252,.86)}
.prose p+p{margin-top:1em}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(34,229,229,.4)}

.grid-7-5,.grid-8-4{display:grid;gap:var(--gap);grid-template-columns:minmax(0,1fr)}
@media (min-width:900px){
  .grid-7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
  .grid-8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}
}

/* 切角面板 */
.cut-panel{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  padding:clamp(18px,2.4vw,30px);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
}
.cut-panel--paper{background:var(--paper);border-color:rgba(19,26,34,.16);color:var(--deep)}
.cut-panel--paper .prose{color:rgba(19,26,34,.84)}

/* 数据条 */
.data-strip{
  display:flex;flex-wrap:wrap;
  border:1px solid var(--line);
  background:rgba(13,23,38,.75);
  clip-path:polygon(14px 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%,0 14px);
}
.data-strip__cell{flex:1 1 150px;min-width:0;padding:14px 18px;border-left:1px solid var(--line)}
.data-strip__cell:first-child{border-left:0}
.data-strip__value{
  display:block;font-family:var(--font-mono);font-weight:700;
  font-size:clamp(18px,2vw,26px);color:var(--cyan);letter-spacing:-.01em;
}
.data-strip__cell:nth-child(2) .data-strip__value{color:var(--orange)}
.data-strip__label{display:block;font-size:11.5px;letter-spacing:.14em;color:var(--mist);margin-top:4px}

/* 筛选 */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.filter-btn{
  padding:8px 14px;border:1px solid var(--line);border-radius:2px;
  font-family:var(--font-display);font-weight:800;font-size:13px;letter-spacing:.08em;
  color:rgba(247,250,252,.72);background:rgba(13,23,38,.5);
  transition:color .18s ease,background .18s ease,border-color .18s ease,transform .14s ease;
}
.filter-btn:hover{color:var(--white);border-color:rgba(34,229,229,.55)}
.filter-btn:active{transform:scale(.98)}
.filter-btn[aria-pressed="true"]{background:var(--cyan);border-color:var(--cyan);color:var(--deep)}
.filter-count{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--lime)}
.is-filtered-out{display:none !important}

/* 图片容器基础规则 */
.media-frame{
  position:relative;overflow:hidden;aspect-ratio:16/9;
  background:linear-gradient(150deg,#12202F,#060A12);
  border:1px solid var(--line);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
}
.media-frame > img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(6,10,18,0) 42%,rgba(6,10,18,.74));
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}

/* ---------- 5. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border:1px solid transparent;border-radius:2px;
  font-family:var(--font-display);font-weight:800;font-size:14px;
  letter-spacing:.08em;line-height:1.2;text-align:center;
  transition:transform .16s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn:active{transform:scale(.98)}
.btn--primary{
  background:var(--orange);color:#190A01;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}
.btn--primary:hover{background:#FF8F3D}
.btn--ghost{background:rgba(34,229,229,.06);border-color:rgba(34,229,229,.45);color:var(--cyan)}
.btn--ghost:hover{background:rgba(34,229,229,.16);color:var(--white)}
.btn--block{width:100%}
.btn--small{padding:8px 14px;font-size:12.5px}

/* ---------- 6. Skip link ---------- */
.skip-link{
  position:fixed;top:8px;left:8px;z-index:300;
  transform:translateY(-160%);
  background:var(--cyan);color:var(--deep);
  font-family:var(--font-display);font-weight:800;font-size:13px;letter-spacing:.08em;
  padding:10px 18px;border-radius:2px;
  transition:transform .2s ease;
}
.skip-link:focus,.skip-link:focus-visible{transform:none}

/* ---------- 7. Header / 侧边轨道 ---------- */
.site-rail{
  position:fixed;top:0;left:0;z-index:120;
  width:var(--rail-w);height:100%;
  background:linear-gradient(180deg,#0B1420 0%,var(--panel) 58%,#070E18 100%);
  border-right:1px solid var(--line);
}
.site-rail::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--cyan),rgba(34,229,229,0) 46%,var(--orange) 82%,var(--red));
  opacity:.9;
}
.rail-progress{
  position:absolute;top:0;right:-1px;width:2px;height:100%;
  background:rgba(154,167,180,.14);z-index:2;
}
.rail-progress > span{
  display:block;width:100%;height:0;
  background:linear-gradient(180deg,var(--cyan) 0%,var(--orange) 100%);
}
.rail-inner{
  position:relative;z-index:3;
  display:flex;flex-direction:column;
  height:100%;padding:22px 18px 18px;overflow-y:auto;
}
.rail-top{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding-bottom:16px;border-bottom:1px solid var(--line);
}
.brand-mark{display:flex;align-items:center;gap:11px;min-width:0}
.brand-glyph{
  flex:0 0 auto;display:grid;place-items:center;
  width:40px;height:40px;
  font-family:var(--font-mono);font-weight:700;font-size:13px;letter-spacing:.06em;
  color:var(--cyan);background:rgba(34,229,229,.1);
  border:1px solid rgba(34,229,229,.55);
  clip-path:polygon(9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%,0 9px);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{
  font-family:var(--font-display);font-weight:900;font-size:18px;
  letter-spacing:.04em;line-height:1.15;color:var(--white);
}
.brand-sub{
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.16em;
  color:var(--mist);margin-top:3px;white-space:nowrap;
}
.version-chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:6px;
  padding:4px 8px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;
  color:var(--lime);border:1px solid rgba(184,255,60,.34);background:rgba(184,255,60,.07);
  border-radius:2px;
}
.version-dot{width:5px;height:5px;border-radius:50%;background:var(--lime)}

.rail-toggle{display:none}

.rail-nav{display:flex;flex-direction:column;flex:1 1 auto;min-height:0;margin-top:16px}
.rail-list{display:flex;flex-direction:column;gap:2px}
.rail-link{
  display:grid;grid-template-columns:26px minmax(0,1fr);align-items:center;gap:8px;
  padding:11px 10px 11px 8px;
  border-left:2px solid transparent;
  color:rgba(247,250,252,.72);
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.rail-index{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;
  color:var(--mist);transition:color .18s ease;
}
.rail-label{
  font-family:var(--font-display);font-weight:800;font-size:15px;
  letter-spacing:.07em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.rail-link:hover{color:var(--white);background:rgba(34,229,229,.07);border-left-color:rgba(34,229,229,.55)}
.rail-link:hover .rail-index{color:var(--cyan)}
.rail-link[aria-current="page"]{
  color:var(--white);
  background:linear-gradient(90deg,rgba(34,229,229,.18),rgba(34,229,229,0) 92%);
  border-left-color:var(--cyan);
}
.rail-link[aria-current="page"] .rail-index{color:var(--orange)}
.rail-link[aria-current="page"] .rail-label{color:var(--cyan)}

.rail-actions{display:grid;gap:8px;margin-top:auto;padding-top:22px}
.rail-status{
  display:flex;align-items:center;gap:7px;
  margin-top:14px;padding-top:14px;border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:10.5px;line-height:1.5;
  letter-spacing:.05em;color:var(--mist);
}
.status-dot{
  flex:0 0 auto;width:7px;height:7px;border-radius:50%;
  background:var(--lime);box-shadow:0 0 0 3px rgba(184,255,60,.18);
  animation:statusPulse 2.8s ease-in-out infinite;
}
@keyframes statusPulse{
  0%,100%{box-shadow:0 0 0 3px rgba(184,255,60,.18);opacity:1}
  50%{box-shadow:0 0 0 6px rgba(184,255,60,.06);opacity:.72}
}

/* ---------- 8. Footer ---------- */
.site-footer{
  position:relative;margin-top:clamp(40px,7vw,96px);
  background:linear-gradient(165deg,#0A1320 0%,#060A12 64%);
  border-top:1px solid var(--line);
}
.footer-band{
  height:4px;
  background:linear-gradient(90deg,var(--cyan) 0%,rgba(34,229,229,.18) 36%,var(--orange) 72%,var(--red) 100%);
}
.footer-inner{max-width:1240px;margin:0 auto;padding:clamp(32px,4.6vw,64px) var(--edge) 24px}
.footer-top{display:grid;grid-template-columns:minmax(0,1fr);gap:clamp(22px,3vw,34px)}
.footer-mark{
  display:inline-grid;place-items:center;width:44px;height:44px;
  font-family:var(--font-mono);font-weight:700;font-size:13px;letter-spacing:.06em;
  color:var(--cyan);background:rgba(34,229,229,.09);
  border:1px solid rgba(34,229,229,.5);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}
.footer-brand-line{
  margin-top:14px;font-family:var(--font-display);font-weight:800;
  font-size:16px;letter-spacing:.02em;line-height:1.5;
}
.footer-tagline{margin-top:8px;font-size:13.5px;color:var(--mist);max-width:32ch;line-height:1.6}
.footer-heading{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-display);font-weight:800;font-size:12px;
  letter-spacing:.2em;text-transform:uppercase;color:var(--mist);
}
.footer-heading::before{content:"";width:14px;height:2px;background:var(--cyan)}
.footer-list{display:grid;gap:9px;margin-top:16px}
.footer-link{
  position:relative;display:inline-block;padding-bottom:2px;
  font-size:14px;color:rgba(247,250,252,.78);
  transition:color .18s ease;
}
.footer-link::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.footer-link:hover{color:var(--white)}
.footer-link:hover::after{transform:scaleX(1)}
.contact-list{display:grid;gap:10px;margin-top:16px}
.contact-row{display:grid;grid-template-columns:44px minmax(0,1fr);gap:10px;align-items:start;font-size:13.5px;line-height:1.6}
.contact-label{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;color:var(--mist);padding-top:3px}
.contact-value{color:rgba(247,250,252,.86);word-break:break-word}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;margin-top:clamp(26px,4vw,46px);padding-top:18px;
  border-top:1px solid var(--line);
  font-size:12.5px;color:var(--mist);
}
.footer-note{max-width:56ch;line-height:1.6}
.footer-legal{font-family:var(--font-mono);letter-spacing:.04em;line-height:1.6}
.footer-sep{padding:0 8px;color:rgba(154,167,180,.45)}
.footer-icp{color:rgba(247,250,252,.7)}

/* ---------- 9. 移动端：顶栏 + 抽屉 ---------- */
@media (max-width:1023px){
  body{padding-left:0}
  .site-rail{
    position:sticky;top:0;width:100%;height:var(--header-h);
    border-right:0;border-bottom:1px solid var(--line);
    background:#080E18;
  }
  .site-rail::after{display:none}
  .rail-progress{display:none}
  .rail-inner{
    flex-direction:row;align-items:center;justify-content:space-between;
    gap:12px;height:var(--header-h);padding:0 var(--edge);overflow:visible;
  }
  .rail-top{
    flex:1 1 auto;justify-content:flex-start;gap:12px;
    border-bottom:0;padding-bottom:0;min-width:0;
  }
  .brand-glyph{width:34px;height:34px;font-size:11.5px}
  .brand-name{font-size:16px}
  .brand-sub{display:none}
  .rail-toggle{
    display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;
    padding:8px 12px;border-radius:2px;
    border:1px solid rgba(34,229,229,.45);
    background:rgba(34,229,229,.07);color:var(--cyan);
    font-family:var(--font-display);font-weight:800;font-size:12px;letter-spacing:.1em;
    transition:background .18s ease;
  }
  .rail-toggle:hover{background:rgba(34,229,229,.16)}
  .rail-toggle-bars{display:grid;gap:4px;width:18px}
  .rail-toggle-bars i{display:block;height:2px;background:currentColor;transition:transform .22s ease,opacity .18s ease}
  .site-rail[data-open="true"] .rail-toggle-bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .site-rail[data-open="true"] .rail-toggle-bars i:nth-child(2){opacity:0}
  .site-rail[data-open="true"] .rail-toggle-bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
  .rail-toggle-text{display:inline-block}

  .rail-nav{
    position:fixed;top:var(--header-h);left:0;z-index:3;
    width:min(86vw,340px);height:calc(100% - var(--header-h));
    margin-top:0;padding:22px 18px 26px;
    background:linear-gradient(180deg,#0B1622,#05090F);
    border-right:1px solid rgba(34,229,229,.28);
    overflow-y:auto;
    transform:translateX(-102%);
    transition:transform .3s cubic-bezier(.4,0,.2,1);
  }
  .site-rail[data-open="true"] .rail-nav{
    transform:none;
    box-shadow:22px 0 48px rgba(0,0,0,.55);
  }
  .site-rail[data-open="true"]::before{
    content:"";position:fixed;inset:var(--header-h) 0 0 0;z-index:2;
    background:rgba(3,6,11,.74);
  }
  .rail-link{padding:13px 10px 13px 8px}
  .rail-label{font-size:16px}
  .rail-actions{margin-top:26px;padding-top:0}
  .rail-status{margin-top:20px}
}

@media (max-width:359px){
  .rail-toggle-text{display:none}
}

/* ---------- 10. 桌面侧轨偏移 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
}

/* ---------- 11. Footer 网格 ---------- */
@media (min-width:600px){
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1/-1}
  .footer-contact{grid-column:1/-1}
}
@media (min-width:1024px){
  .footer-top{grid-template-columns:1.35fr .62fr .7fr .62fr 1.05fr}
  .footer-brand,.footer-contact{grid-column:auto}
}

/* ---------- 12. 滚动显现 ---------- */
html.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .52s ease,transform .52s ease}
html.js [data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 13. Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .status-dot{animation:none}
  html.js [data-reveal]{opacity:1;transform:none}
}

/* ---------- 14. 打印 ---------- */
@media print{
  body{padding-left:0;background:#fff;color:#111}
  .site-rail,.rail-toggle,.skip-link,.footer-band{display:none !important}
  .site-footer{border-top:1px solid #999;background:#fff;color:#111}
  .footer-link,.contact-value,.footer-legal,.footer-icp,.footer-note,.footer-tagline,.footer-brand-line{color:#111}
}