/* ==========================================================================
   必博体育CN · /assets/site.css
   共享外壳：重置、变量、中文排版、页头、页脚、通用组件
   ========================================================================== */

/* 1. Reset */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h,100px) + 16px)}
body{margin:0}
h1,h2,h3,h4,p,figure,blockquote,dl,dd,address{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}
a{color:inherit}
address{font-style:normal}
table{border-collapse:collapse;width:100%}
:where(a,button,summary){-webkit-tap-highlight-color:transparent}

/* 2. 设计变量 */
:root{
  --ink:#06231C;
  --archive:#0B3A2D;
  --pitch:#0F5A45;
  --cyan:#21F3C8;
  --mist:#D9FFF7;
  --amber:#F5A623;
  --flare:#FF6B35;
  --paper:#F4F8F5;
  --graphite:#121B18;
  --slate:#6E8C82;

  --mist-72:rgba(217,255,247,.72);
  --mist-56:rgba(217,255,247,.56);
  --cyan-line:rgba(33,243,200,.28);
  --hairline:rgba(217,255,247,.14);

  --font-display:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --font-script:"LXGW WenKai","Caveat","Kaiti SC","STKaiti",cursive;

  --max:1240px;
  --pad:clamp(16px,4vw,44px);
  --header-h:100px;
  --cut:14px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* 3. 中文排版与全局语义色 */
body{
  background:var(--ink);
  color:var(--mist);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.02em;
  text-wrap:balance;
}
h1{font-size:clamp(2.5rem,6.2vw,5.2rem);line-height:1.02}
h2{font-size:clamp(1.85rem,3.6vw,3.1rem)}
h3{font-size:clamp(1.15rem,1.8vw,1.5rem);letter-spacing:.01em;line-height:1.3}
::selection{background:var(--cyan);color:var(--ink)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px}
.section--paper :focus-visible{outline-color:var(--pitch)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}

/* 4. 跳转链接 */
.skip-link{
  position:fixed;left:14px;top:-80px;z-index:300;
  padding:10px 18px;background:var(--cyan);color:var(--ink);
  font-size:.86rem;font-weight:700;letter-spacing:.04em;text-decoration:none;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  transition:top .22s var(--ease);
}
.skip-link:focus{top:12px}

/* 5. 页头 */
.site-header{
  position:sticky;top:0;z-index:90;
  color:var(--mist);
  background:linear-gradient(180deg,rgba(6,35,28,.95) 0%,rgba(6,35,28,.72) 60%,rgba(6,35,28,0) 100%);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header[data-scrolled="true"]{
  background:rgba(6,35,28,.97);
  box-shadow:0 1px 0 var(--cyan-line),0 24px 52px -32px #000;
  backdrop-filter:blur(12px);
}
.site-header[data-open="true"]{background:rgba(6,35,28,.99)}
.header-bar{position:relative;z-index:2}
.header-inner{
  width:min(100% - var(--pad) * 2,var(--max));
  margin-inline:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:clamp(12px,2vw,26px);
}
.header-bar > .header-inner{min-height:66px;padding-block:12px}

/* 品牌 */
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;text-decoration:none;color:var(--mist)}
.brand-mark{
  width:38px;height:38px;display:grid;place-items:center;
  background:var(--cyan);color:var(--ink);
  font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.08em;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 11px),calc(100% - 11px) 100%,0 100%);
  transition:background .25s var(--ease),color .25s var(--ease);
}
.brand:hover .brand-mark{background:var(--amber)}
.brand-text{display:flex;flex-direction:column;gap:3px;line-height:1.12}
.brand-name{font-family:var(--font-display);font-size:1.3rem;font-weight:700;letter-spacing:.04em}
.brand-tagline{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:var(--mist-56)}

/* 主导航 */
.site-nav{min-width:0}
.nav-list{display:flex;align-items:center;gap:clamp(2px,.9vw,14px);counter-reset:navi}
.nav-list > li{counter-increment:navi}
.nav-link{
  position:relative;
  display:inline-flex;align-items:baseline;
  padding:9px 8px 11px;
  color:var(--mist-72);
  font-size:.94rem;font-weight:500;letter-spacing:.01em;
  text-decoration:none;white-space:nowrap;
  transition:color .22s var(--ease);
}
.nav-link::before{
  content:counter(navi,decimal-leading-zero);
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.06em;
  color:var(--cyan);opacity:.55;margin-inline-end:5px;
  transform:translateY(-4px);
}
.nav-link::after{
  content:"";position:absolute;left:8px;right:8px;bottom:5px;height:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left center;
  transition:transform .28s var(--ease);
}
.nav-link:hover,.nav-link:focus-visible{color:#fff}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-extra{display:none}

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

/* 6. 按钮 */
.cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 20px;
  background:var(--cyan);color:var(--ink);
  font-family:var(--font-body);font-size:.88rem;font-weight:700;letter-spacing:.04em;
  text-decoration:none;border:0;cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 11px),calc(100% - 11px) 100%,0 100%);
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.cta:hover{background:var(--mist);color:var(--ink);transform:translateY(-1px)}
.cta--ghost{background:rgba(33,243,200,.12);color:var(--cyan);border-left:3px solid var(--cyan)}
.cta--ghost:hover{background:var(--cyan);color:var(--ink)}
.cta--amber{background:var(--amber);color:var(--ink)}
.cta--amber:hover{background:var(--flare);color:var(--ink)}
.site-header .cta{padding:10px 15px;font-size:.8rem}

/* 7. 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:10px 12px;
  background:rgba(217,255,247,.06);
  border:1px solid var(--hairline);
  color:var(--mist);cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover,.nav-toggle:focus-visible{background:rgba(33,243,200,.16);color:var(--cyan);border-color:var(--cyan)}
.nav-toggle[aria-expanded="true"]{background:rgba(33,243,200,.2);color:var(--cyan);border-color:var(--cyan)}
.nav-toggle-label{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.18em}
.nav-toggle-bars{position:relative;display:block;width:18px;height:12px;flex:0 0 auto}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:currentColor;
  transition:transform .25s var(--ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{bottom:0}
.site-header[data-open="true"] .nav-toggle-bars::before{transform:translateY(5px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle-bars::after{transform:translateY(-5px) rotate(-45deg)}

/* 8. 轮次公告带 */
.header-ticker{border-top:1px solid rgba(33,243,200,.16);background:rgba(6,35,28,.62)}
.header-ticker .header-inner{
  min-height:30px;padding-block:6px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--mist-56);
}
.ticker-text{display:flex;align-items:center;gap:9px;min-width:0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.ticker-dot{display:inline-block;width:6px;height:6px;flex:0 0 auto;background:var(--flare);box-shadow:0 0 0 3px rgba(255,107,53,.18);animation:tick-pulse 2.6s ease-in-out infinite}
@keyframes tick-pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 3px rgba(255,107,53,.18)}
  50%{opacity:.55;box-shadow:0 0 0 6px rgba(255,107,53,.05)}
}
.ticker-links{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.ticker-link{color:var(--mist-56);text-decoration:none;border-bottom:1px solid transparent;white-space:nowrap;transition:color .2s var(--ease),border-color .2s var(--ease)}
.ticker-link:hover,.ticker-link:focus-visible{color:var(--cyan);border-bottom-color:var(--cyan)}

/* 9. 滚动进度 */
.scroll-progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;z-index:3;
  background:linear-gradient(90deg,var(--cyan),var(--amber),var(--flare));
  transform:scaleX(0);transform-origin:left center;
}

/* 10. 页脚 */
.site-footer{position:relative;overflow:hidden;background:var(--ink);color:var(--mist-72);border-top:1px solid var(--cyan-line)}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(118deg,transparent 0 46px,rgba(33,243,200,.05) 46px 47px);
}
.site-footer > *{position:relative}
.footer-strip{border-bottom:1px solid var(--hairline);background:rgba(11,58,45,.5)}
.footer-strip .wrap{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:44px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
}
.footer-strip-text{display:flex;align-items:center;gap:9px;min-width:0;color:var(--mist-56)}
.footer-strip-link{color:var(--cyan);text-decoration:none;border-bottom:1px solid transparent;white-space:nowrap}
.footer-strip-link:hover,.footer-strip-link:focus-visible{border-bottom-color:var(--cyan)}

.footer-top{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.55fr);
  gap:clamp(32px,5vw,72px);
  padding-block:clamp(44px,7vw,84px);
}
.footer-brand{display:flex;flex-direction:column;gap:16px;max-width:44ch}
.footer-logo{font-family:var(--font-display);font-size:1.9rem;font-weight:700;line-height:1;letter-spacing:.03em;color:var(--mist);text-decoration:none}
.footer-logo:hover,.footer-logo:focus-visible{color:var(--cyan)}
.footer-intro{font-size:.94rem;line-height:1.8;color:var(--mist-72)}
.footer-contact{display:grid;gap:8px;padding-top:18px;border-top:1px solid var(--hairline)}
.contact-row{display:grid;grid-template-columns:44px minmax(0,1fr);gap:10px;font-family:var(--font-mono);font-size:12px;line-height:1.7}
.contact-label{color:var(--slate);letter-spacing:.12em}
.contact-value{color:var(--mist);word-break:break-word}

.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px)}
.footer-col{min-width:0}
.footer-col-title{
  font-family:var(--font-mono);font-size:11px;font-weight:700;line-height:1.4;
  letter-spacing:.24em;color:var(--cyan);text-transform:uppercase;
  margin-bottom:14px;
}
.footer-list{display:grid;gap:10px}
.footer-link{
  position:relative;display:inline-block;
  padding-bottom:2px;
  color:var(--mist-72);font-size:.92rem;text-decoration:none;
  transition:color .2s var(--ease);
}
.footer-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left center;
  transition:transform .25s var(--ease);
}
.footer-link:hover,.footer-link:focus-visible{color:var(--cyan)}
.footer-link:hover::after,.footer-link:focus-visible::after{transform:scaleX(1)}

.footer-bottom{border-top:1px solid var(--hairline);background:rgba(6,35,28,.62);padding-block:22px 30px}
.footer-bottom-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}
.footer-legal{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--mist-56)}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-note{margin-top:12px;max-width:70ch;font-size:12px;line-height:1.7;color:var(--slate)}

/* 11. 布局容器与区块 */
.wrap{width:min(100% - var(--pad) * 2,var(--max));margin-inline:auto}
.section{position:relative;padding-block:clamp(52px,8vw,116px)}
.section--tight{padding-block:clamp(30px,4.5vw,60px)}
.section--ink{background:var(--ink);color:var(--mist)}
.section--archive{background:var(--archive);color:var(--mist)}
.section--paper{background:var(--paper);color:var(--graphite)}
.section--paper .eyebrow{color:var(--pitch)}
.grid{display:grid;gap:clamp(16px,2.4vw,30px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* 12. 文本与索引元素 */
.eyebrow{
  display:flex;align-items:center;gap:10px;
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11.5px;font-weight:500;
  letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:26px;height:1px;flex:0 0 auto;background:currentColor}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.signature{font-family:var(--font-script);font-style:italic;font-size:1.08em;letter-spacing:.02em;color:var(--amber)}
.rule-slant{height:0;border:0;border-top:2px solid var(--cyan);opacity:.55;transform:skewY(-1.2deg);transform-origin:left center}
.prose{max-width:68ch;font-size:clamp(15px,1.6vw,17px);line-height:1.75}
.prose p{margin-block:0 1.1em}
.prose h2,.prose h3{margin-block:1.6em .6em}
.prose ul,.prose ol{margin-block:0 1.1em;padding-inline-start:1.25em;list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin-block:.35em}
.prose a{color:var(--pitch);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.section--ink .prose a,.section--archive .prose a{color:var(--cyan)}
.prose blockquote{
  margin:1.4em 0;padding:14px 18px;
  border-left:3px solid var(--amber);background:rgba(245,166,35,.08);
  font-family:var(--font-script);font-style:italic;font-size:1.08em;color:var(--amber);
}

/* 13. 标签与筛选 */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;
  font-family:var(--font-mono);font-size:10.5px;font-weight:600;letter-spacing:.12em;line-height:1.5;
  color:var(--cyan);background:rgba(33,243,200,.12);border:1px solid rgba(33,243,200,.34);
  white-space:nowrap;
}
.tag--opinion{color:var(--amber);background:rgba(245,166,35,.12);border-color:rgba(245,166,35,.4)}
.tag--alert{color:var(--flare);background:rgba(255,107,53,.14);border-color:rgba(255,107,53,.42)}
.tag--muted{color:var(--mist-56);background:rgba(217,255,247,.06);border-color:var(--hairline)}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 20px;
  font-family:var(--font-body);font-size:.82rem;font-weight:500;letter-spacing:.03em;
  color:var(--mist-72);background:transparent;border:1px solid rgba(217,255,247,.22);
  cursor:pointer;
  clip-path:polygon(9px 0,100% 0,calc(100% - 9px) 100%,0 100%);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{border-color:var(--cyan);color:var(--cyan)}
.chip.is-active,.chip[aria-pressed="true"]{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}

/* 14. 切角面板 */
.cut{
  --cut:14px;--surface:var(--archive);
  background:var(--surface);
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
  transition:background .25s var(--ease);
}
.cut--tr{clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,0 100%)}
.cut:hover{--surface:var(--pitch)}

/* 15. 图片容器（16:9） */
.media-frame{
  position:relative;display:block;overflow:hidden;aspect-ratio:16/9;
  background:linear-gradient(140deg,var(--pitch),var(--ink) 72%);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.media-frame:hover img{transform:scale(1.03)}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(6,35,28,0) 45%,rgba(6,35,28,.82) 100%);
}
.media-tag{position:absolute;left:12px;top:12px;z-index:2}

/* 16. 面包屑 */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin-bottom:18px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--slate);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li + li::before{content:"/";color:rgba(110,140,130,.62)}
.breadcrumb a{color:inherit;text-decoration:none;border-bottom:1px solid transparent}
.breadcrumb a:hover,.breadcrumb a:focus-visible{color:var(--cyan);border-bottom-color:currentColor}

/* 17. 轮次刻度轴 */
.rail{position:relative;display:flex;gap:6px;padding-top:16px}
.rail::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(33,243,200,.7),rgba(33,243,200,.06));
}
.rail-node{
  position:relative;flex:1 1 0;padding-top:4px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;text-align:center;
  color:var(--mist-56);
}
.rail-node::before{
  content:"";position:absolute;top:-16px;left:50%;width:1px;height:7px;
  background:rgba(33,243,200,.42);transform:translateX(-50%);
}
.rail-node--current{color:var(--cyan)}
.rail-node--current::after{
  content:"";position:absolute;top:-19px;left:50%;width:7px;height:7px;
  background:var(--cyan);transform:translateX(-50%) rotate(45deg);
}

/* 18. 显现场景 */
[data-reveal]{transition:opacity .55s var(--ease),transform .55s var(--ease)}
.has-js [data-reveal]:not(.is-in){opacity:0;transform:translateY(16px)}

/* 19. 平板与手机 */
@media (max-width:1100px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;z-index:5;
    display:none;flex-direction:column;
    padding:8px var(--pad) 20px;
    background:rgba(7,40,31,.99);
    border-top:1px solid var(--cyan-line);
    box-shadow:0 34px 64px -34px #000;
    max-height:calc(100dvh - var(--header-h));
    overflow:auto;
  }
  .site-header[data-open="true"] .site-nav{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{
    display:flex;align-items:center;
    padding:15px 10px;
    font-size:1rem;
    border-bottom:1px solid var(--hairline);
  }
  .nav-link::before{font-size:10px;transform:none}
  .nav-link::after{
    left:0;right:auto;top:12px;bottom:12px;
    width:2px;height:auto;
    transform:scaleY(0);transform-origin:top center;
  }
  .nav-link:hover::after,.nav-link:focus-visible::after,.nav-link[aria-current="page"]::after{transform:scaleY(1)}
  .nav-extra{
    display:flex;flex-wrap:wrap;gap:18px;
    padding:18px 10px 4px;
    font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--mist-56);
  }
  html.nav-open{overflow:hidden}
  .footer-top{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:980px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:720px){
  .site-header .cta{display:none}
  .brand-tagline{display:none}
  .ticker-links{display:none}
  .brand-mark{width:34px;height:34px;font-size:12px}
  .brand-name{font-size:1.16rem}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start}
  .footer-strip .wrap{flex-wrap:wrap;padding-block:8px;min-height:0}
}
@media (max-width:420px){
  .footer-cols{grid-template-columns:minmax(0,1fr)}
  .contact-row{grid-template-columns:minmax(0,1fr);gap:2px}
}

/* 20. 动效降级 */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .has-js [data-reveal]:not(.is-in){opacity:1;transform:none}
  .media-frame:hover img{transform:none}
  .cta:hover{transform:none}
}