/* ============================================================
   YUN体育 · 共享样式表 /assets/site.css
   夜间赛场指挥舱：深墨蓝底 + 蓝图网格 + 电子青结构 + 信号橙动作
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --ink-900:#060B16;
  --ink-800:#0B1424;
  --ink-700:#122036;
  --line:#1E3350;
  --cyan:#2FD9E8;
  --cyan-soft:#86EEF6;
  --orange:#FF6A1F;
  --green:#B4FF3A;
  --text:#E8F1FA;
  --muted:#8DA3BE;
  --paper:#F2F6FB;
  --ink-text:#0B1424;

  --rail-w:92px;
  --rail-w-open:252px;
  --topbar-h:54px;
  --gutter:clamp(18px,4vw,40px);
  --shell-max:1280px;
  --cut:14px;
  --cut-tr:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,0 100%);
  --cut-bl:polygon(0 0,100% 0,100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));

  --font-display:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:var(--font-display);
  --font-mono:ui-monospace,SFMono-Regular,"JetBrains Mono","Roboto Mono",Menlo,Consolas,"Noto Sans Mono",monospace;

  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:36px;
  --sp-5:56px;
  --sp-6:88px;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,p,figure,blockquote{margin:0;}
ul,ol{list-style:none;margin:0;padding:0;}
img,svg,video{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
table{border-collapse:collapse;width:100%;}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  padding-top:var(--topbar-h);
  padding-bottom:72px;
  background-color:var(--ink-900);
  background-image:
    linear-gradient(rgba(30,51,80,.34) 1px,transparent 1px),
    linear-gradient(90deg,rgba(30,51,80,.34) 1px,transparent 1px),
    radial-gradient(120% 80% at 82% -12%,rgba(47,217,232,.10),transparent 62%),
    radial-gradient(90% 60% at -5% 0%,rgba(255,106,31,.07),transparent 55%);
  background-size:64px 64px,64px 64px,100% 100%,100% 100%;
  background-attachment:fixed;
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  overflow-x:hidden;
}
::selection{background:var(--cyan);color:var(--ink-900);}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.2;letter-spacing:.01em;}
strong{font-weight:700;color:#fff;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;box-shadow:0 0 0 4px rgba(47,217,232,.18);}

/* ---------- 4. 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:8px;
  left:8px;
  z-index:300;
  padding:10px 18px;
  background:var(--cyan);
  color:var(--ink-900);
  font-size:14px;
  font-weight:700;
  clip-path:var(--cut-tr);
  transform:translateY(-180%);
  transition:transform .18s ease;
}
.skip-link:focus{transform:none;}

/* ---------- 5. 顶部状态条 ---------- */
.topbar{
  position:fixed;
  top:0;left:0;right:0;
  height:var(--topbar-h);
  z-index:120;
  background:rgba(11,20,36,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.topbar__inner{
  display:flex;
  align-items:center;
  gap:18px;
  height:100%;
  padding:0 var(--gutter);
}
.topbar__brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.topbar__brand-name{
  font-weight:800;
  font-size:15px;
  letter-spacing:.04em;
  color:var(--text);
}
.topbar__brand-mark{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.08em;
  color:var(--cyan);
  border:1px solid rgba(47,217,232,.4);
  padding:2px 6px;
  white-space:nowrap;
}
.topbar__path{display:none;align-items:center;gap:10px;font-family:var(--font-mono);font-size:11px;min-width:0;}
.topbar__path-key{
  color:rgba(141,163,190,.7);
  letter-spacing:.24em;
  text-transform:uppercase;
}
.topbar__path-value{
  color:var(--cyan);
  letter-spacing:.08em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.topbar__utils{display:none;gap:22px;margin-left:auto;}
.topbar__util{
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
  transition:color .18s ease,border-color .18s ease;
}
.topbar__util:hover{color:var(--cyan-soft);border-color:rgba(134,238,246,.6);}
.topbar__progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  background:rgba(30,51,80,.55);
}
.topbar__progress-fill{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  transition:width .12s linear;
}

/* 移动端开关 */
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
  padding:8px 12px;
  border:1px solid var(--line);
  background:rgba(18,32,54,.85);
  clip-path:var(--cut-tr);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--text);
}
.nav-toggle__bars{display:grid;gap:4px;width:18px;}
.nav-toggle__bars i{display:block;height:2px;background:var(--cyan);transition:transform .2s ease,opacity .2s ease;}
.site-header.is-nav-open .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg);}
.site-header.is-nav-open .nav-toggle__bars i:nth-child(2){opacity:0;}
.site-header.is-nav-open .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 6. 品牌组合 ---------- */
.brand{display:flex;align-items:center;gap:12px;min-width:0;}
.brand__mark{
  flex:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;height:42px;
  border:1px solid rgba(47,217,232,.45);
  background:linear-gradient(145deg,rgba(47,217,232,.16),rgba(11,20,36,.2));
  clip-path:var(--cut-tr);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--cyan);
}
.brand__body{display:flex;flex-direction:column;min-width:0;white-space:nowrap;transition:opacity .2s ease,transform .2s ease;}
.brand__name{font-size:15px;font-weight:800;letter-spacing:.06em;}
.brand__sub{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.22em;
  color:var(--muted);
  text-transform:uppercase;
}

/* ---------- 7. 导航主体（移动端抽屉） ---------- */
.rail-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:min(84vw,320px);
  z-index:150;
  display:flex;
  flex-direction:column;
  padding:calc(var(--topbar-h) + 20px) 0 22px;
  background:linear-gradient(180deg,rgba(11,20,36,.99),rgba(6,11,22,.99));
  border-right:1px solid var(--line);
  overflow-y:auto;
  overscroll-behavior:contain;
  transform:translateX(-102%);
  transition:transform .26s cubic-bezier(.2,.7,.3,1);
}
.rail-nav[data-open="true"]{transform:none;}
.rail-nav__head{
  position:relative;
  display:flex;
  align-items:center;
  padding:0 22px 18px;
  border-bottom:1px dashed rgba(30,51,80,.9);
}
.rail-nav__hint{display:none;}
.rail-nav__list{
  flex:1 1 auto;
  display:flex;
  flex-direction:column;
  gap:2px;
  margin-top:20px;
}
.rail-nav__item{display:block;}
.rail-nav__link{
  position:relative;
  display:flex;
  align-items:center;
  gap:14px;
  padding:13px 20px 13px 30px;
  color:var(--muted);
  font-size:15px;
  letter-spacing:.02em;
  transition:color .18s ease,background .18s ease;
}
.rail-nav__link::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:3px;height:0;
  background:var(--cyan);
  transform:translateY(-50%);
  transition:height .2s ease;
}
.rail-nav__link:hover{color:var(--text);background:linear-gradient(90deg,rgba(47,217,232,.10),transparent 78%);}
.rail-nav__link[aria-current="page"]{color:var(--text);background:linear-gradient(90deg,rgba(47,217,232,.14),transparent 78%);}
.rail-nav__link[aria-current="page"]::before{height:22px;}
.rail-nav__index{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:rgba(141,163,190,.6);
  transition:color .18s ease;
}
.rail-nav__link[aria-current="page"] .rail-nav__index{color:var(--cyan);}
.rail-nav__label{white-space:nowrap;}
.rail-nav__foot{
  margin-top:auto;
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:16px 22px 0 30px;
  border-top:1px dashed rgba(30,51,80,.9);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
}
.rail-nav__cert{color:var(--cyan-soft);}
.rail-nav__sync{color:rgba(141,163,190,.75);}

/* 移动端遮罩 */
.nav-scrim{
  position:fixed;
  inset:0;
  z-index:140;
  background:rgba(6,11,22,.74);
  opacity:0;
  pointer-events:none;
  transition:opacity .22s ease;
}
.site-header.is-nav-open .nav-scrim{opacity:1;pointer-events:auto;}

/* ---------- 8. 移动端底部快捷路径 ---------- */
.quick-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:130;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  padding:7px 6px calc(7px + env(safe-area-inset-bottom,0px));
  background:rgba(11,20,36,.97);
  border-top:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.quick-bar__link{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:5px;
  padding:5px 2px;
  color:var(--muted);
  font-size:13px;
  letter-spacing:.02em;
  transition:color .18s ease;
}
.quick-bar__mark{width:18px;height:2px;background:var(--line);transition:background .18s ease;}
.quick-bar__key{white-space:nowrap;}
.quick-bar__link[aria-current="page"]{color:var(--cyan);}
.quick-bar__link[aria-current="page"] .quick-bar__mark{background:var(--cyan);}

/* ---------- 9. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,110px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,20,36,.72),rgba(6,11,22,.98) 62%);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;
  width:180px;height:2px;
  background:var(--cyan);
}
.site-footer__inner{
  max-width:var(--shell-max);
  margin:0 auto;
  padding:clamp(34px,5vw,64px) var(--gutter) 30px;
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(24px,4vw,44px);
}
.site-footer__lead{display:flex;flex-direction:column;gap:16px;align-items:flex-start;}
.site-footer__line{font-size:14px;color:var(--muted);max-width:24em;}
.site-footer__actions{display:flex;flex-wrap:wrap;gap:12px;}
.site-footer__cert{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.18em;
  color:var(--cyan-soft);
}
.footer-block{display:flex;flex-direction:column;gap:14px;}
.footer-block__title{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.24em;
  color:var(--cyan-soft);
  text-transform:uppercase;
  padding-bottom:10px;
  border-bottom:1px dashed rgba(30,51,80,.9);
}
.footer-block__list{display:flex;flex-direction:column;gap:9px;}
.footer-link{
  position:relative;
  display:inline-block;
  font-size:14px;
  color:var(--muted);
  padding-left:14px;
  transition:color .18s ease,transform .18s ease;
}
.footer-link::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:7px;height:1px;
  background:var(--line);
  transition:background .18s ease,width .18s ease;
}
.footer-link:hover{color:var(--text);transform:translateX(3px);}
.footer-link:hover::before{background:var(--cyan);width:11px;}
.site-footer__legal{
  max-width:var(--shell-max);
  margin:0 auto;
  padding:20px var(--gutter) 34px;
  border-top:1px dashed rgba(30,51,80,.9);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 26px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:rgba(141,163,190,.85);
}
.site-footer__legal-line{color:var(--text);}
.site-footer__contact{flex:1 1 320px;}
.site-footer__legal-nav{display:flex;flex-wrap:wrap;gap:8px 18px;}
.site-footer__legal-nav .footer-link,
.site-footer__legal-nav .footer-link:hover{transform:none;}
.site-footer__legal-nav .footer-link{font-size:11px;padding-left:12px;}
.site-footer__copy{margin-left:auto;}

/* ---------- 10. 页面通用骨架 ---------- */
.page-main{padding:clamp(24px,4vw,56px) 0 0;display:block;}
.container{
  width:100%;
  max-width:var(--shell-max);
  margin:0 auto;
  padding:0 var(--gutter);
}
.hairline{
  height:1px;
  border:0;
  background-image:repeating-linear-gradient(90deg,var(--line) 0 14px,transparent 14px 26px);
}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:12px 16px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
  margin-bottom:var(--sp-4);
}
.section-head__index{font-family:var(--font-mono);font-size:12px;color:var(--cyan);}
.section-head__title{font-size:clamp(22px,2.6vw,30px);font-weight:800;}
.section-head__note{margin-left:auto;font-size:12px;color:var(--muted);font-family:var(--font-mono);letter-spacing:.08em;}

.breadcrumb{margin-bottom:var(--sp-3);}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--muted);}
.breadcrumb__item{display:inline-flex;align-items:center;}
.breadcrumb__item+.breadcrumb__item::before{
  content:"/";
  margin:0 10px;
  color:var(--line);
}
.breadcrumb__item a{color:var(--cyan-soft);}
.breadcrumb__item a:hover{color:var(--cyan);}
.breadcrumb__item[aria-current="page"]{color:var(--text);}

.prose{max-width:38em;font-size:16px;color:#cfe0f2;}
.prose h2{font-size:clamp(20px,2.2vw,26px);margin:1.8em 0 .6em;color:var(--text);}
.prose h3{font-size:18px;margin:1.5em 0 .5em;color:var(--cyan-soft);}
.prose p{margin:0 0 1.1em;}
.prose ul{margin:0 0 1.2em;}
.prose li{position:relative;padding-left:18px;margin-bottom:.5em;}
.prose li::before{content:"";position:absolute;left:0;top:.75em;width:8px;height:1px;background:var(--cyan);}
.prose a{color:var(--cyan-soft);border-bottom:1px solid rgba(134,238,246,.4);}

.panel{
  position:relative;
  padding:var(--panel-pad,26px);
  background:var(--ink-800);
  border:1px solid var(--line);
  clip-path:var(--cut-tr);
}
.panel--raised{background:var(--ink-700);}
.panel--paper{background:var(--paper);color:var(--ink-text);border-color:rgba(11,20,36,.12);}
.panel--paper .panel__title{color:var(--ink-text);}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap,24px);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.6em;
  padding:14px 24px;
  font-size:15px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--text);
  background:var(--ink-700);
  border:1px solid var(--line);
  clip-path:var(--cut-tr);
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn--primary{background:var(--orange);border-color:var(--orange);color:#140803;font-weight:800;}
.btn--primary:hover{background:#ff8347;border-color:#ff8347;}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--muted);}
.btn--ghost:hover{color:var(--cyan);border-color:rgba(47,217,232,.55);}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--muted);
  background:rgba(18,32,54,.8);
  border:1px solid var(--line);
  white-space:nowrap;
}
.tag--info{color:var(--cyan);border-color:rgba(47,217,232,.45);}
.tag--signal{color:var(--orange);border-color:rgba(255,106,31,.5);}
.tag--live{color:var(--green);border-color:rgba(180,255,58,.45);}
.tag__dot{width:6px;height:6px;background:currentColor;flex:none;border-radius:50%;}
.tag--live .tag__dot{animation:pulse-dot 1.6s ease-in-out infinite;}
@keyframes pulse-dot{0%,100%{opacity:1;}50%{opacity:.28;}}

/* 图片容器（共享外壳不放图片，供页面阶段使用） */
.media-frame{
  position:relative;
  overflow:hidden;
  background:var(--ink-700);
  border:1px solid var(--line);
  clip-path:var(--cut-tr);
}
.media-frame img{
  width:100%;height:100%;
  object-fit:cover;
  filter:saturate(.85) contrast(1.08) brightness(.78);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    linear-gradient(180deg,rgba(6,11,22,.12),rgba(6,11,22,.78)),
    repeating-linear-gradient(0deg,rgba(47,217,232,.07) 0 1px,transparent 1px 4px);
}
.media-frame__trace{
  position:absolute;
  left:-12%;bottom:16%;
  width:124%;height:56%;
  border-top:2px solid rgba(47,217,232,.55);
  border-radius:50%;
  transform:rotate(-6deg);
  pointer-events:none;
}
.media-frame--wide{aspect-ratio:16/9;}
.media-frame--tall{aspect-ratio:3/4;}
.media-frame--square{aspect-ratio:1/1;}

/* ---------- 11. 滚动显现 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .5s ease,transform .5s ease;
  will-change:opacity,transform;
}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 12. 平板 / 桌面 ---------- */
@media (min-width:700px){
  .site-footer__inner{grid-template-columns:1.5fr 1fr 1fr;}
  .site-footer__inner>.site-footer__lead{grid-column:1 / -1;}
}
@media (min-width:900px){
  :root{--topbar-h:36px;}
  body{padding-top:var(--topbar-h);padding-left:var(--rail-w);padding-bottom:0;font-size:17px;}

  .topbar__brand{display:none;}
  .topbar__path{display:flex;}
  .topbar__utils{display:flex;}
  .nav-toggle{display:none;}
  .nav-scrim{display:none;}
  .quick-bar{display:none;}

  .rail-nav{
    top:var(--topbar-h);
    bottom:0;
    width:var(--rail-w);
    padding:22px 0 24px;
    transform:none;
    border-right:1px solid var(--line);
    transition:width .24s ease;
  }
  .rail-nav:hover,
  .rail-nav:focus-within{width:var(--rail-w-open);}
  .rail-nav__head{padding:0 0 18px 22px;}
  .rail-nav__hint{
    display:block;
    position:absolute;
    right:16px;top:50%;
    transform:translateY(-50%);
    writing-mode:vertical-rl;
    font-family:var(--font-mono);
    font-size:10px;
    letter-spacing:.34em;
    color:rgba(141,163,190,.7);
    transition:opacity .18s ease;
  }
  .rail-nav:hover .rail-nav__hint,
  .rail-nav:focus-within .rail-nav__hint{opacity:0;}
  .rail-nav .brand__body,
  .rail-nav .rail-nav__label{
    opacity:0;
    transform:translateX(-8px);
  }
  .rail-nav .rail-nav__label{
    display:inline-block;
    transition:opacity .2s ease,transform .2s ease;
  }
  .rail-nav:hover .brand__body,
  .rail-nav:focus-within .brand__body,
  .rail-nav:hover .rail-nav__label,
  .rail-nav:focus-within .rail-nav__label{opacity:1;transform:none;}
  .rail-nav__link{padding-right:16px;}

  .site-footer__inner{grid-template-columns:1.6fr 1fr 1fr 1fr;}
  .site-footer__inner>.site-footer__lead{grid-column:auto;}
}
@media (min-width:1200px){
  .site-footer__lead{gap:18px;}
}

/* ---------- 13. 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;
  }
  .reveal{opacity:1!important;transform:none!important;}
  .rail-nav__link:hover,.btn:hover,.footer-link:hover{transform:none;}
}