/* ==========================================================================
   B体育赛事 — 全站共享样式 / assets/site.css
   深空蓝底 · 天山雪青正文 · 赛场荧光绿唯一强调色
   ========================================================================== */

/* --- 1. Reset ------------------------------------------------------------ */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:7.5rem;
}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
summary{cursor:pointer}
details>summary{list-style:none}
details>summary::-webkit-details-marker{display:none}

/* --- 2. 变量 ------------------------------------------------------------- */
:root{
  --ink-900:#070C18;
  --ink-800:#0C1526;
  --panel:#122238;
  --line:#43607C;
  --text:#A6C4D6;
  --text-strong:#EAF3F8;
  --accent:#4DF08C;
  --pulse:#FF9C42;
  --sand:#C4A987;
  --fade:#0A2A2E;

  --line-soft:rgba(67,96,124,.42);
  --line-faint:rgba(67,96,124,.22);
  --accent-soft:rgba(77,240,140,.14);
  --pulse-soft:rgba(255,156,66,.14);

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

  --shell:1220px;
  --gutter:clamp(16px,4vw,40px);
  --cut:22px;
  --ease:160ms ease;
}

/* --- 3. 基础排版 --------------------------------------------------------- */
body{
  min-height:100vh;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1000px 520px at 84% -12%, rgba(77,240,140,.10), transparent 62%),
    radial-gradient(760px 460px at 2% 4%, rgba(166,196,214,.10), transparent 60%),
    repeating-linear-gradient(90deg, rgba(67,96,124,.12) 0 1px, transparent 1px 74px),
    repeating-linear-gradient(0deg, rgba(67,96,124,.09) 0 1px, transparent 1px 74px),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 52%, var(--ink-900) 100%);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:clamp(16px,0.35vw + 15px,18px);
  line-height:1.75;
  letter-spacing:.005em;
  overflow-x:hidden;
}
h1,h2,h3,h4{color:var(--text-strong);font-weight:800;line-height:1.15;letter-spacing:-.015em}
h1{font-size:clamp(2.4rem,6.2vw,4rem);letter-spacing:-.02em}
h2{font-size:clamp(1.75rem,3.6vw,2.25rem);letter-spacing:.004em}
h3{font-size:clamp(1.125rem,1.5vw,1.25rem);font-weight:700}
h4{font-size:1rem;font-weight:700}
p{max-width:72ch}
strong{color:var(--text-strong);font-weight:700}
::selection{background:var(--accent);color:#04140C}

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

.skip-link{
  position:absolute;
  left:50%;
  top:.4rem;
  z-index:120;
  transform:translate(-50%,-160%);
  background:var(--accent);
  color:#04140C;
  font-size:.85rem;
  font-weight:700;
  letter-spacing:.04em;
  padding:.6rem 1.1rem;
  transition:transform var(--ease);
}
.skip-link:focus{transform:translate(-50%,0)}

.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;
}

/* --- 4. 布局骨架 --------------------------------------------------------- */
.shell{
  width:min(100% - (var(--gutter) * 2), var(--shell));
  margin-inline:auto;
}
.section{padding-block:clamp(48px,7vw,88px);position:relative}
.section--tight{padding-block:clamp(28px,4vw,48px)}
.section__head{
  display:grid;
  gap:.7rem 2rem;
  grid-template-columns:minmax(0,1fr);
  margin-bottom:clamp(20px,3vw,38px);
}
.section__title{
  font-size:clamp(1.75rem,3.6vw,2.25rem);
  letter-spacing:.004em;
}
.section__note{
  font-family:var(--font-mono);
  font-size:.8125rem;
  line-height:1.8;
  letter-spacing:.06em;
  color:var(--line);
  max-width:46ch;
}
@media (min-width:900px){
  .section__head{grid-template-columns:minmax(0,7fr) minmax(0,4fr);align-items:end}
  .section__note{justify-self:end;text-align:right}
}

.editorial{
  display:grid;
  gap:clamp(18px,2.4vw,32px);
  grid-template-columns:repeat(12,minmax(0,1fr));
}
.editorial__main{grid-column:1 / -1}
.editorial__aside{grid-column:1 / -1}
@media (min-width:900px){
  .editorial__main{grid-column:1 / span 8}
  .editorial__aside{grid-column:10 / span 3}
}

.page-head{
  position:relative;
  padding-block:clamp(28px,4.5vw,56px);
  border-bottom:1px solid var(--line-soft);
}
.page-head::after{
  content:"";
  position:absolute;
  right:0;
  bottom:-1px;
  width:min(340px,44%);
  height:2px;
  background:linear-gradient(90deg,transparent,var(--accent));
}
.page-head__title{font-size:clamp(2rem,4.6vw,3.1rem);letter-spacing:-.02em}
.page-head__note{margin-top:.9rem;font-size:.95rem;color:var(--text);max-width:62ch}

/* --- 5. 文字工具 --------------------------------------------------------- */
.lede{font-size:clamp(1.02rem,1.3vw,1.15rem);color:var(--text-strong);max-width:58ch;line-height:1.7}
.kicker{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--accent);
}
.kicker--muted{color:var(--line)}
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  color:var(--text-strong);
  letter-spacing:-.01em;
}

/* --- 6. 面板与状态芯片 --------------------------------------------------- */
.panel{
  position:relative;
  background:linear-gradient(165deg,rgba(18,34,56,.94),rgba(12,21,38,.92));
  border:1px solid var(--line-soft);
  padding:clamp(16px,2.2vw,26px);
  transition:transform var(--ease),border-color var(--ease);
}
.panel--cut{
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
}
.panel--lift:hover,.panel--lift:focus-within{
  transform:translateY(-2px);
  border-color:var(--accent);
}
.panel__head{
  display:flex;
  flex-wrap:wrap;
  gap:.4rem 1rem;
  align-items:baseline;
  justify-content:space-between;
  padding-bottom:.7rem;
  margin-bottom:1rem;
  border-bottom:1px solid var(--line-faint);
}
.panel__title{font-size:1.1rem;font-weight:700;color:var(--text-strong);letter-spacing:.008em}
.panel__meta{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.1em;
  color:var(--line);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:.4em;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--accent);
  background:var(--accent-soft);
  border:1px solid rgba(77,240,140,.35);
  padding:.28em .62em;
  white-space:nowrap;
}
.tag--pulse{color:var(--pulse);background:var(--pulse-soft);border-color:rgba(255,156,66,.35)}
.tag--mute{color:var(--text);background:rgba(67,96,124,.14);border-color:var(--line-soft)}

/* --- 7. 按钮 ------------------------------------------------------------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.7em 1.3em;
  font-size:.88rem;
  font-weight:700;
  letter-spacing:.05em;
  white-space:nowrap;
  color:var(--text-strong);
  background:rgba(18,34,56,.72);
  border:1px solid var(--line);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  transition:transform var(--ease),color var(--ease),border-color var(--ease),background-color var(--ease);
}
.btn:hover{transform:translateY(-2px);border-color:var(--accent);color:#fff}
.btn--accent{
  color:#04140C;
  background:var(--accent);
  border-color:var(--accent);
  box-shadow:0 12px 30px -20px rgba(77,240,140,.9);
}
.btn--accent:hover{color:#04140C;background:#6CF6A2;border-color:#6CF6A2}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn--ghost:hover{color:var(--text-strong);background:rgba(67,96,124,.16)}

/* --- 8. 紧凑数据列表 ----------------------------------------------------- */
.data-list{display:grid;border-top:1px solid var(--line-soft)}
.data-list__row{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  gap:.4rem 1rem;
  align-items:baseline;
  padding:.8rem 0;
  border-bottom:1px solid var(--line-faint);
  transition:border-color var(--ease),background-color var(--ease);
}
.data-list__row:hover{border-color:var(--accent);background:rgba(77,240,140,.04)}
.data-list__key{
  font-family:var(--font-mono);
  font-size:.76rem;
  letter-spacing:.06em;
  color:var(--line);
}
.data-list__value{
  font-family:var(--font-mono);
  font-size:.9rem;
  font-weight:700;
  color:var(--text-strong);
  font-variant-numeric:tabular-nums;
  justify-self:end;
}

/* --- 9. 图像容器（供页面阶段放图） --------------------------------------- */
.media-frame{
  position:relative;
  display:block;
  aspect-ratio:4 / 3;
  background:linear-gradient(150deg,#0C1526,#101F33 46%,var(--fade));
  border:1px solid var(--line-soft);
  overflow:hidden;
  clip-path:polygon(0 0,calc(100% - 26px) 0,100% 26px,100% 100%,0 100%);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg, rgba(67,96,124,.20) 0 1px, transparent 1px 34px),
    repeating-linear-gradient(0deg, rgba(67,96,124,.16) 0 1px, transparent 1px 34px),
    linear-gradient(200deg, rgba(10,42,46,.55), transparent 62%);
  opacity:.75;
}
.media-frame__media{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.8) contrast(1.06) brightness(.9);
}
.media-frame__label{
  position:absolute;
  left:14px;
  bottom:12px;
  z-index:1;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--accent);
  background:rgba(7,12,24,.66);
  padding:.28em .6em;
}
.media-frame__caption{
  display:block;
  margin-top:.7rem;
  font-size:.8rem;
  line-height:1.7;
  color:var(--line);
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame--tall{aspect-ratio:3 / 4}

/* --- 10. 折叠章节 -------------------------------------------------------- */
.disclosure{
  border:1px solid var(--line-soft);
  background:rgba(12,21,38,.66);
  transition:border-color var(--ease);
}
.disclosure + .disclosure{margin-top:-1px}
.disclosure[open]{border-color:var(--line)}
.disclosure__summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:1rem clamp(16px,2vw,22px);
  font-weight:700;
  color:var(--text-strong);
  transition:color var(--ease);
}
.disclosure__summary::after{
  content:"+";
  font-family:var(--font-mono);
  font-size:1rem;
  color:var(--accent);
}
.disclosure[open] .disclosure__summary::after{content:"–"}
.disclosure__summary:hover{color:#fff}
.disclosure__body{
  padding:0 clamp(16px,2vw,22px) 1.1rem;
  border-top:1px solid var(--line-faint);
  margin-top:0;
  font-size:.94rem;
}

/* --- 11. 分隔线与面包屑 -------------------------------------------------- */
.rule{height:1px;border:0;background:linear-gradient(90deg,var(--line),transparent)}
.rule--flip{background:linear-gradient(90deg,transparent,var(--line))}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45rem;
  padding-block:.9rem;
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.08em;
  color:var(--line);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:.45rem}
.breadcrumb__link{color:var(--text);transition:color var(--ease)}
.breadcrumb__link:hover{color:var(--accent)}
.breadcrumb__sep{color:var(--line-faint)}
.breadcrumb__item[aria-current="page"]{color:var(--text-strong)}

/* --- 12. 头部（居中刊头 + 下方栏目带） ----------------------------------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg,rgba(7,12,24,.97),rgba(12,21,38,.93));
  border-bottom:1px solid var(--line-soft);
  backdrop-filter:blur(12px);
}
.site-header__inner{
  width:min(100% - (var(--gutter) * 2), var(--shell));
  margin-inline:auto;
}
.masthead{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:1rem;
  padding-block:clamp(10px,1.5vw,18px) .5rem;
}
.masthead__brand-block{text-align:center}
.masthead__brand{
  display:inline-block;
  font-size:clamp(1.45rem,3.2vw,2rem);
  font-weight:800;
  line-height:1;
  letter-spacing:.06em;
  color:var(--text-strong);
  transition:color var(--ease);
}
.masthead__brand:hover{color:var(--accent)}
.masthead__subline{
  margin-top:.4rem;
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--line);
}
.masthead__meta{
  display:none;
  align-items:center;
  gap:.5rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.1em;
  color:var(--line);
}
.masthead__meta-key{color:var(--line)}
.masthead__meta-value{color:var(--text)}
.masthead__dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(77,240,140,.16);
}
@media (min-width:880px){
  .masthead__meta{display:flex}
  .masthead__meta--right{justify-self:end}
}

.nav-bar{
  position:relative;
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:.6rem;
  padding-block:.55rem .6rem;
  border-top:1px solid var(--line-faint);
}
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  padding:.5rem .8rem;
  font-size:.82rem;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--text-strong);
  background:rgba(18,34,56,.66);
  border:1px solid var(--line);
  transition:border-color var(--ease),color var(--ease);
}
.nav-toggle:hover{border-color:var(--accent);color:#fff}
.nav-toggle__bars{display:grid;gap:4px;width:16px}
.nav-toggle__bars span{
  display:block;
  height:2px;
  background:var(--accent);
  transition:transform var(--ease),opacity var(--ease);
}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.site-nav{
  position:absolute;
  left:0;
  right:0;
  top:100%;
  z-index:5;
  padding:clamp(14px,3vw,22px) var(--gutter);
  background:linear-gradient(180deg,rgba(12,21,38,.99),rgba(7,12,24,.99));
  border-bottom:1px solid var(--line-soft);
  max-height:calc(100vh - 6rem);
  overflow-y:auto;
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity 180ms ease,transform 180ms ease,visibility 180ms ease;
}
.site-header[data-open="true"] .site-nav{opacity:1;visibility:visible;transform:none}
.site-nav__list{display:grid;gap:.1rem}
.site-nav__list > li{display:block}
.site-nav__link{
  display:block;
  padding:.7rem .1rem;
  font-size:.95rem;
  font-weight:700;
  color:var(--text);
  border-bottom:1px solid var(--line-faint);
  transition:color var(--ease),border-color var(--ease);
}
.site-nav__link:hover{color:var(--text-strong);border-color:var(--accent)}
.site-nav__link[aria-current="page"]{color:var(--accent)}
.site-nav__link[aria-current="page"]::after{
  content:"";
  display:inline-block;
  width:6px;
  height:6px;
  margin-left:.5rem;
  background:var(--accent);
  vertical-align:middle;
}
.nav-bar__cta{
  justify-self:end;
  font-size:.78rem;
  padding:.55em 1em;
}
@media (min-width:880px){
  .nav-toggle{display:none}
  .site-nav{
    position:static;
    padding:0;
    background:none;
    border:0;
    max-height:none;
    overflow:visible;
    opacity:1;
    visibility:visible;
    transform:none;
    justify-self:center;
  }
  .site-nav__list{display:flex;align-items:center;gap:clamp(6px,1.8vw,26px)}
  .site-nav__link{
    position:relative;
    padding:.45rem .15rem;
    font-size:.92rem;
    border:0;
  }
  .site-nav__link::before{
    content:"";
    position:absolute;
    left:0;
    right:0;
    bottom:0;
    height:2px;
    background:var(--accent);
    transform:scaleX(0);
    transform-origin:0 50%;
    transition:transform var(--ease);
  }
  .site-nav__link:hover::before{transform:scaleX(1)}
  .site-nav__link[aria-current="page"]{color:var(--text-strong)}
  .site-nav__link[aria-current="page"]::before{transform:scaleX(1)}
  .site-nav__link[aria-current="page"]::after{content:none}
  .nav-bar__cta{font-size:.85rem;padding:.62em 1.2em}
}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  overflow:hidden;
  pointer-events:none;
}
.scroll-progress span{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(var(--scroll-progress,0));
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--accent),var(--pulse));
}

/* --- 13. 页脚 ------------------------------------------------------------ */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,96px);
  background:linear-gradient(180deg,var(--ink-800) 0%,var(--ink-900) 100%);
  border-top:1px solid var(--line-soft);
  overflow:hidden;
}
.site-footer__ridge{
  position:absolute;
  right:-4%;
  bottom:0;
  width:min(720px,86%);
  height:190px;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(196,169,135,.18),transparent 78%);
  clip-path:polygon(0 100%,16% 44%,30% 68%,47% 20%,63% 60%,78% 36%,100% 100%);
}
.site-footer__ridge::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:100%;
  background:linear-gradient(180deg,rgba(67,96,124,.24),transparent 82%);
  clip-path:polygon(0 100%,20% 64%,37% 82%,56% 46%,74% 76%,100% 58%,100% 100%);
}
.site-footer__inner{
  position:relative;
  z-index:1;
  width:min(100% - (var(--gutter) * 2), var(--shell));
  margin-inline:auto;
  padding-top:clamp(36px,5vw,64px);
}
.site-footer__top{
  display:grid;
  gap:clamp(24px,3vw,40px);
  grid-template-columns:minmax(0,1fr);
}
@media (min-width:640px){
  .site-footer__top{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1000px){
  .site-footer__top{
    grid-template-columns:minmax(0,1.4fr) minmax(0,.8fr) minmax(0,.8fr) minmax(0,1.2fr);
  }
}
.footer-brand__mark{
  display:inline-block;
  font-size:1.55rem;
  font-weight:800;
  letter-spacing:.05em;
  color:var(--text-strong);
  transition:color var(--ease);
}
.footer-brand__mark:hover{color:var(--accent)}
.footer-brand__text{
  margin-top:.75rem;
  font-size:.9rem;
  max-width:36ch;
  color:var(--text);
}
.footer-brand__tags{
  display:flex;
  flex-wrap:wrap;
  gap:.5rem;
  margin-top:1rem;
}
.footer-col__title{
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--line);
  padding-bottom:.6rem;
  border-bottom:1px solid var(--line-soft);
}
.footer-list{margin-top:.9rem;display:grid;gap:.55rem}
.footer-list__link{
  display:inline-block;
  font-size:.92rem;
  color:var(--text);
  transition:color var(--ease),transform var(--ease);
}
.footer-list__link:hover{color:var(--accent);transform:translateX(3px)}
.footer-contact__list{margin-top:.9rem;display:grid;gap:.85rem}
.footer-contact__item{display:grid;gap:.2rem}
.footer-contact__key{
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--line);
}
.footer-contact__value{
  font-size:.9rem;
  color:var(--text-strong);
  word-break:break-word;
}
.footer-note{
  margin-top:1rem;
  font-size:.8rem;
  line-height:1.75;
  color:var(--line);
  max-width:46ch;
}
.site-footer__bottom{
  margin-top:clamp(28px,4vw,52px);
  padding-block:1.1rem clamp(20px,3vw,30px);
  border-top:1px solid var(--line-faint);
}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5rem 1.2rem;
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.05em;
  color:var(--line);
  max-width:none;
}
.footer-legal a{color:var(--text);transition:color var(--ease)}
.footer-legal a:hover{color:var(--accent)}

/* --- 14. 进入视口的显现（由 JS 触发） ------------------------------------ */
html[data-js="on"] [data-reveal]{
  opacity:0;
  transform:translateY(10px);
  transition:opacity 320ms ease,transform 320ms ease;
}
html[data-js="on"] [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* --- 15. 降低动效 -------------------------------------------------------- */
@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="on"] [data-reveal]{opacity:1;transform:none}
  .panel--lift:hover,.btn:hover,.footer-list__link:hover{transform:none}
}