/* ============================================================
   B/SPORTS · 共享站点套件  /assets/site.css
   夜场指挥中心视觉系统：深空蓝暗场 + 荧光青柠信号 + 热橙红脉冲
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --space-blue:#071426;
  --night-blue:#0C2038;
  --tactical:#12395C;
  --lime:#C9FF3B;
  --ember:#FF5A36;
  --silver:#B8C4D4;
  --mist:#F4F8FF;
  --aqua:#7FE7D4;
  --amber:#FFB347;

  --line:rgba(184,196,212,.16);
  --line-soft:rgba(184,196,212,.09);
  --line-live:rgba(201,255,59,.42);
  --glass:rgba(12,32,56,.58);
  --shadow:0 26px 64px -36px rgba(0,0,0,.96);

  --font-display:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
  --font-mono:"SFMono-Regular","SF Mono","JetBrains Mono","Roboto Mono",Menlo,Consolas,"Courier New",monospace;

  --shell:1240px;
  --pad:clamp(1rem,4vw,3rem);
  --cut:10px;
  --cut-lg:18px;
}

/* ---------- 2. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{
  margin:0;min-height:100vh;
  font-family:var(--font-body);
  font-size:16px;line-height:1.75;letter-spacing:.012em;
  color:var(--mist);
  background-color:var(--space-blue);
  background-image:
    radial-gradient(1200px 560px at 84% -10%,rgba(201,255,59,.10),transparent 62%),
    radial-gradient(900px 520px at 2% 4%,rgba(255,90,54,.11),transparent 58%),
    linear-gradient(180deg,#071426 0%,#08182c 46%,#060f1d 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{display:block;max-width:100%;height:auto}
h1,h2,h3,h4,h5,h6{
  margin:0 0 .6em;
  font-family:var(--font-display);
  font-weight:800;line-height:1.12;letter-spacing:-.015em;
  color:var(--mist);
}
h1{font-size:clamp(2.1rem,5.4vw,4.2rem)}
h2{font-size:clamp(1.65rem,3.4vw,2.7rem)}
h3{font-size:clamp(1.2rem,2vw,1.55rem);letter-spacing:-.01em}
h4{font-size:1.05rem;letter-spacing:0}
p{margin:0 0 1.1em;max-width:36em}
ul,ol{margin:0 0 1.1em;padding-left:1.15em}
li{margin:.25em 0}
a{color:var(--aqua);text-decoration-thickness:1px;text-underline-offset:3px;transition:color .16s ease}
a:hover{color:var(--lime)}
strong,b{font-weight:700;color:var(--mist)}
small{font-size:.8rem;color:var(--silver)}
code,kbd,samp{font-family:var(--font-mono);font-size:.92em;color:var(--amber)}
hr{border:0}
::selection{background:var(--lime);color:#06101f}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:2px}
.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;
}

/* ---------- 3. 跳转链接 ---------- */
.skip-link{
  position:fixed;top:.6rem;left:.6rem;z-index:300;
  transform:translateY(-180%);
  padding:.65rem 1.1rem;
  background:var(--lime);color:#06101f;
  font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.08em;
  text-decoration:none;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
  transition:transform .18s ease;
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0);color:#06101f}

/* ---------- 4. 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(7,20,38,.985) 0%,rgba(7,20,38,.93) 64%,rgba(7,20,38,.78) 100%);
  backdrop-filter:blur(14px) saturate(125%);
  -webkit-backdrop-filter:blur(14px) saturate(125%);
  transition:background .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.site-header[data-stuck]{
  background:rgba(8,22,40,.96);
  border-bottom-color:var(--line-live);
  box-shadow:0 22px 46px -30px rgba(0,0,0,.95);
}

/* 4.1 赛事信号横条 */
.scoreline{
  display:flex;align-items:center;gap:.7rem;
  max-height:42px;overflow:hidden;white-space:nowrap;
  padding:.45rem var(--pad);
  border-bottom:1px solid rgba(201,255,59,.16);
  background:linear-gradient(90deg,rgba(201,255,59,.15) 0%,rgba(12,32,56,0) 48%,rgba(255,90,54,.17) 100%);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;
  color:var(--silver);
  transition:max-height .24s ease,padding .24s ease,opacity .2s ease,border-color .2s ease;
}
.site-header[data-stuck] .scoreline{
  max-height:0;padding-top:0;padding-bottom:0;opacity:0;
  border-bottom-color:transparent;
}
.scoreline__dot{
  flex:none;width:8px;height:8px;border-radius:50%;
  background:var(--lime);box-shadow:0 0 0 4px rgba(201,255,59,.18);
}
@media (prefers-reduced-motion:no-preference){
  .scoreline__dot{animation:tickPulse 2.6s ease-in-out infinite}
  @keyframes tickPulse{
    0%,100%{opacity:1;transform:scale(1)}
    50%{opacity:.35;transform:scale(.7)}
  }
}
.scoreline__chip{
  flex:none;padding:.1rem .5rem;
  border:1px solid rgba(201,255,59,.35);
  color:var(--lime);background:rgba(201,255,59,.07);
  letter-spacing:.16em;
}
.scoreline__chip--alt{
  border-color:rgba(255,90,54,.45);
  color:var(--ember);background:rgba(255,90,54,.08);
}
.scoreline__text{overflow:hidden;text-overflow:ellipsis;color:rgba(184,196,212,.82)}

/* 4.2 居中报头 */
.masthead{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:1rem;
  max-width:var(--shell);margin:0 auto;
  padding:.9rem var(--pad) .5rem;
}
.masthead__tagline{
  margin:0;justify-self:start;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.22em;
  color:rgba(184,196,212,.72);
}
.masthead__brand{
  justify-self:center;display:inline-flex;flex-direction:column;align-items:center;gap:.1rem;
  text-decoration:none;color:var(--mist);
}
.masthead__mark{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(1.35rem,3vw,2.05rem);letter-spacing:.06em;line-height:1;
  background:linear-gradient(96deg,var(--mist) 0%,var(--mist) 34%,var(--lime) 78%,var(--aqua) 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.masthead__name{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.52em;
  text-indent:.52em;color:rgba(184,196,212,.78);
}
.masthead__brand:hover .masthead__name{color:var(--lime)}
.masthead__tools{justify-self:end}
.utility-link{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.42rem .8rem;
  border:1px solid var(--line);
  background:rgba(18,57,92,.4);
  color:var(--silver);text-decoration:none;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;
  clip-path:polygon(7px 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%,0 7px);
  transition:color .16s ease,border-color .16s ease,background .16s ease;
}
.utility-link:hover,.utility-link:focus-visible{
  color:var(--lime);border-color:var(--line-live);background:rgba(201,255,59,.1);
}

/* 4.3 导航坞 */
.dock{
  position:relative;
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:.75rem;
  max-width:var(--shell);margin:0 auto;
  padding:0 var(--pad) .7rem;
}
.dock__nav{grid-column:2;display:flex;justify-content:center}
.nav-list{
  display:flex;align-items:center;gap:.15rem;
  margin:0;padding:0;list-style:none;
}
.nav-list li{margin:0}
.nav-list a{
  position:relative;display:block;
  padding:.5rem .8rem;
  font-family:var(--font-display);font-weight:700;font-size:14.5px;letter-spacing:.045em;
  color:var(--silver);text-decoration:none;
  transition:color .16s ease;
}
.nav-list a::after{
  content:"";position:absolute;left:.8rem;right:.8rem;bottom:.24rem;height:2px;
  background:linear-gradient(90deg,var(--lime),var(--aqua));
  transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-list a:hover,.nav-list a:focus-visible{color:var(--mist)}
.nav-list a:hover::after,.nav-list a:focus-visible::after,.nav-list a[aria-current="page"]::after{transform:scaleX(1)}
.nav-list a[aria-current="page"]{color:var(--lime)}
.nav-toggle{display:none}
.dock__cta{grid-column:3;justify-self:end}

/* 4.4 行动计划按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.45rem;
  padding:.68rem 1.15rem;
  border:1px solid transparent;
  font-family:var(--font-display);font-weight:800;font-size:14px;letter-spacing:.06em;
  text-decoration:none;cursor:pointer;
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn--lime{background:var(--lime);color:#06101f}
.btn--lime:hover,.btn--lime:focus-visible{background:var(--ember);color:var(--mist)}
.btn--quiet{
  background:rgba(12,32,56,.6);color:var(--mist);
  border-color:rgba(184,196,212,.28);
}
.btn--quiet:hover,.btn--quiet:focus-visible{
  border-color:var(--line-live);color:var(--lime);background:rgba(201,255,59,.08);
}

/* 4.5 滚动脉冲条 */
.scroll-pulse{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:140;
  background:rgba(244,248,255,.06);pointer-events:none;
}
.scroll-pulse__bar{
  display:block;height:100%;width:var(--progress,0%);
  background:linear-gradient(90deg,var(--lime),var(--aqua) 52%,var(--ember));
  box-shadow:0 0 12px rgba(201,255,59,.55);
  transition:width .1s linear;
}

/* ---------- 5. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(3rem,7vw,6rem);
  border-top:1px solid rgba(201,255,59,.24);
  background:linear-gradient(180deg,#08182c 0%,#050e1b 72%,#040b16 100%);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;
  width:min(42%,340px);height:3px;
  background:linear-gradient(90deg,var(--lime),var(--ember));
}
.footer__inner{
  display:grid;
  grid-template-columns:1.5fr .8fr .8fr 1.25fr;
  gap:clamp(1.4rem,4vw,3rem);
  max-width:var(--shell);margin:0 auto;
  padding:clamp(2.2rem,5vw,3.6rem) var(--pad) 1.6rem;
}
.footer__col{min-width:0}
.footer__brand{
  display:inline-flex;flex-direction:column;gap:.15rem;
  text-decoration:none;color:var(--mist);
}
.footer__mark{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(1.25rem,2.6vw,1.7rem);letter-spacing:.07em;line-height:1;
  color:var(--mist);
}
.footer__brand:hover .footer__mark{color:var(--lime)}
.footer__name{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.5em;
  text-indent:.5em;color:rgba(184,196,212,.72);
}
.footer__summary{
  margin:1rem 0 .9rem;max-width:30em;
  font-size:14.5px;line-height:1.8;color:rgba(184,196,212,.9);
}
.footer__meta{
  margin:0;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:rgba(127,231,212,.8);
}
.footer__title{
  margin:0 0 .85rem;
  font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.26em;
  text-transform:uppercase;color:var(--lime);
}
.footer__list{margin:0;padding:0;list-style:none}
.footer__list li{margin:0 0 .55rem}
.footer__list a{
  display:inline-flex;align-items:center;gap:.5rem;
  color:rgba(184,196,212,.88);text-decoration:none;
  font-size:14.5px;
  transition:color .16s ease,gap .16s ease;
}
.footer__list a::before{
  content:"";width:10px;height:1px;flex:none;
  background:rgba(201,255,59,.55);
  transition:width .16s ease,background .16s ease;
}
.footer__list a:hover,.footer__list a:focus-visible{color:var(--lime)}
.footer__list a:hover::before{width:18px;background:var(--ember)}
.footer__list--plain li{
  display:flex;flex-wrap:wrap;gap:.4rem;
  font-size:14px;line-height:1.7;color:rgba(184,196,212,.9);
  padding-bottom:.55rem;
  border-bottom:1px dashed var(--line-soft);
}
.footer__list--plain li:last-child{border-bottom:0;padding-bottom:0}
.footer__label{
  flex:none;min-width:2.6em;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:rgba(127,231,212,.85);
}
.footer__note{
  margin:1rem 0 0;max-width:26em;
  font-size:12.5px;line-height:1.75;color:rgba(184,196,212,.68);
}
.footer__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:.5rem 1.6rem;
  max-width:var(--shell);margin:0 auto;
  padding:1rem var(--pad) 2rem;
  border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:rgba(184,196,212,.66);
}
.footer__legal,.footer__region{margin:0;max-width:none}
.footer__sep{color:rgba(201,255,59,.6);margin:0 .35em}

/* ---------- 6. 通用排版与布局 ---------- */
.container{
  width:100%;max-width:var(--shell);
  margin:0 auto;padding:0 var(--pad);
}
.section{padding:clamp(2.4rem,6vw,4.6rem) 0}
.section--tight{padding:clamp(1.6rem,4vw,2.6rem) 0}
.section--night{
  background:linear-gradient(180deg,rgba(12,32,56,.72) 0%,rgba(12,32,56,.24) 100%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:.6rem;
  margin:0 0 .85rem;
  font-family:var(--font-mono);font-size:11px;font-weight:700;
  letter-spacing:.24em;text-transform:uppercase;color:var(--lime);
}
.eyebrow::before{
  content:"";width:26px;height:2px;
  background:linear-gradient(90deg,var(--lime),var(--ember));
}
.rule{
  height:1px;border:0;margin:clamp(1.6rem,4vw,2.6rem) 0;
  background:linear-gradient(90deg,rgba(201,255,59,.55) 0%,rgba(184,196,212,.14) 42%,transparent 100%);
}
.grid{display:grid;gap:clamp(1rem,2.4vw,1.6rem)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(215px,1fr))}
.split{display:grid;grid-template-columns:1fr;gap:clamp(1.4rem,4vw,2.8rem)}
@media (min-width:900px){
  .split{grid-template-columns:minmax(0,1fr) minmax(0,1.45fr)}
  .split--reverse{grid-template-columns:minmax(0,1.45fr) minmax(0,1fr)}
}

/* ---------- 7. 卡片 / 标签 ---------- */
.card{
  position:relative;
  padding:clamp(1.05rem,2.4vw,1.55rem);
  background:rgba(12,32,56,.62);
  border:1px solid var(--line);
  clip-path:polygon(var(--cut-lg) 0,100% 0,100% calc(100% - var(--cut-lg)),calc(100% - var(--cut-lg)) 100%,0 100%,0 var(--cut-lg));
  transition:border-color .18s ease,background .18s ease,transform .18s ease;
}
.card:hover,.card:focus-within{border-color:var(--line-live);background:rgba(18,57,92,.6)}
.card--solid{background:var(--night-blue);border-color:rgba(184,196,212,.22)}
.card--glass{
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(130%);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
}
.chip{
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.2rem .6rem;
  border:1px solid rgba(201,255,59,.35);
  background:rgba(201,255,59,.07);
  color:var(--lime);
  font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.12em;
  text-decoration:none;
}
.chip--ember{
  border-color:rgba(255,90,54,.45);
  background:rgba(255,90,54,.08);
  color:var(--ember);
}

/* ---------- 8. 面包屑 ---------- */
.crumbs{
  margin:0 0 clamp(1rem,2.6vw,1.7rem);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;
}
.crumbs ol{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;
  margin:0;padding:0;list-style:none;
}
.crumbs li{display:flex;align-items:center;gap:.5rem;margin:0;color:rgba(184,196,212,.7)}
.crumbs li+li::before{content:"/";color:rgba(201,255,59,.55)}
.crumbs a{color:rgba(184,196,212,.85);text-decoration:none}
.crumbs a:hover,.crumbs a:focus-visible{color:var(--lime)}
.crumbs [aria-current="page"]{color:var(--lime)}

/* ---------- 9. 图片容器基础 ---------- */
.media{
  position:relative;display:block;overflow:hidden;
  background:
    radial-gradient(120% 100% at 20% 0%,rgba(201,255,59,.14),transparent 55%),
    linear-gradient(140deg,#0C2038 0%,#12395C 58%,#071426 100%);
  clip-path:polygon(var(--cut-lg) 0,100% 0,100% calc(100% - var(--cut-lg)),calc(100% - var(--cut-lg)) 100%,0 100%,0 var(--cut-lg));
}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(184,196,212,.055) 0 1px,transparent 1px 56px);
}
.media img{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21/9}
.media--band{aspect-ratio:5/2}
.media--tall{aspect-ratio:4/5}
.media--square{aspect-ratio:1/1}
.media__tag{
  position:absolute;top:.7rem;left:.7rem;z-index:2;
  padding:.18rem .5rem;
  background:var(--lime);color:#06101f;
  font-family:var(--font-mono);font-size:10.5px;font-weight:700;letter-spacing:.1em;
}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  margin:0;padding:.75rem 1rem .7rem;
  background:linear-gradient(0deg,rgba(5,14,27,.94),rgba(5,14,27,0) 100%);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:rgba(184,196,212,.92);
}

/* ---------- 10. 响应式 ---------- */
@media (max-width:1024px){
  .footer__inner{grid-template-columns:1fr 1fr;gap:2rem}
  .footer__col--brand{grid-column:1 / -1}
  .footer__col--contact{grid-column:1 / -1;border-top:1px solid var(--line-soft);padding-top:1.4rem}
  .footer__list--plain{max-width:34rem}
}
@media (max-width:820px){
  body{background-attachment:scroll}

  .masthead{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
    gap:.45rem .75rem;padding-top:.75rem;padding-bottom:.55rem;
  }
  .masthead__brand{align-items:flex-start}
  .masthead__tagline{
    flex-basis:100%;text-align:center;font-size:10px;letter-spacing:.16em;
  }

  .dock{
    grid-template-columns:auto auto;
    justify-content:space-between;
    gap:.55rem .75rem;
    padding-bottom:.75rem;
  }
  .nav-toggle{
    grid-column:1;justify-self:start;
    display:inline-flex;align-items:center;gap:.5rem;
    padding:.5rem .7rem;
    border:1px solid var(--line);
    background:rgba(18,57,92,.55);
    color:var(--mist);cursor:pointer;
    font-family:var(--font-mono);font-size:11.5px;letter-spacing:.18em;
    clip-path:polygon(7px 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%,0 7px);
    transition:color .16s ease,border-color .16s ease,background .16s ease;
  }
  .nav-toggle__bars{display:inline-flex;flex-direction:column;gap:3px;width:16px;flex:none}
  .nav-toggle__bars span{display:block;height:2px;background:var(--lime);transition:transform .2s ease}
  .nav-toggle__label{line-height:1}
  .dock[data-open] .nav-toggle{color:var(--lime);border-color:var(--line-live);background:rgba(201,255,59,.12)}
  .dock[data-open] .nav-toggle__bars span:first-child{transform:translateY(2.5px) rotate(45deg)}
  .dock[data-open] .nav-toggle__bars span:last-child{transform:translateY(-2.5px) rotate(-45deg)}

  .dock__cta{grid-column:2;justify-self:end;padding:.55rem .85rem;font-size:13px}
  .dock__nav{
    grid-column:1 / -1;width:100%;
    display:none;
    padding-top:.35rem;
    border-top:1px solid var(--line);
  }
  .dock[data-open] .dock__nav{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list a{
    padding:.8rem .25rem;font-size:16px;
    border-bottom:1px solid var(--line-soft);
  }
  .nav-list a::after{display:none}
  .nav-list a[aria-current="page"]{
    color:var(--lime);
    padding-left:.85rem;
    background:linear-gradient(90deg,rgba(201,255,59,.16),rgba(201,255,59,0));
    border-left:2px solid var(--lime);
  }
  .nav-list li:last-child a{border-bottom:0}
}
@media (max-width:640px){
  h1{font-size:clamp(1.9rem,8vw,2.6rem)}
  .scoreline{gap:.5rem;font-size:10.5px}
  .scoreline__text{display:none}
  .footer__inner{grid-template-columns:1fr;gap:1.6rem}
  .footer__summary{font-size:14px}
  .footer__base{font-size:10.5px;letter-spacing:.08em}
  .masthead__mark{font-size:1.4rem}
}

/* ---------- 11. 动效与可访问性 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .scroll-pulse__bar{transition:none}
  .skip-link{transition:none}
}