/* ============================================================
   全站共享 CSS — ob体育官方网站
   设计原型：技术蓝图 / 数据观测站
   ============================================================ */

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,dl,dd,figure,blockquote{margin:0;}
ul[class],ol[class]{list-style:none;padding:0;}
a{color:inherit;}
img,svg,video{display:block;max-width:100%;height:auto;}
button,input,select,textarea{font:inherit;color:inherit;}
main{display:block;}
#main-content{display:block;}

:root{
  --bg-base:#0B1026;
  --bg-card:#131A3A;
  --bg-elev:#1C2340;
  --accent:#39FF88;
  --accent-2:#FF6B1A;
  --text:#E8ECF1;
  --text-2:#B0B8C4;
  --divider:#2A3556;
  --danger:#FF3B57;
  --info:#4A90E2;
  --grid-line:rgba(42,53,86,.42);
  --font-heading:'Oswald','Noto Sans SC','Microsoft YaHei',sans-serif;
  --font-body:'Noto Sans SC','Microsoft YaHei',sans-serif;
  --font-mono:'Roboto Mono','SFMono-Regular',Consolas,'Courier New',monospace;
  --header-h:64px;
  --ticker-h:32px;
  --container-w:1280px;
  --radius:2px;
}

body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  min-height:100vh;
  background-color:var(--bg-base);
  background-image:
    linear-gradient(to right,var(--grid-line) 1px,transparent 1px),
    linear-gradient(to bottom,var(--grid-line) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:var(--font-heading);
  line-height:1.2;
  font-weight:600;
  letter-spacing:.02em;
  margin:0 0 .6em;
}
h1{font-size:clamp(2.3rem,5vw,3.8rem);}
h2{font-size:clamp(1.6rem,3vw,2.3rem);}
h3{font-size:1.25rem;}
h4{font-size:1.05rem;}

p{margin:0 0 1em;}
::selection{background:var(--accent);color:var(--bg-base);}

:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}

::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-base);}
::-webkit-scrollbar-thumb{background:var(--divider);border:2px solid var(--bg-base);}

/* ---------- 布局工具 ---------- */
.site-container{
  width:100%;
  max-width:var(--container-w);
  margin-inline:auto;
  padding-inline:clamp(16px,3vw,32px);
}

.grid{
  display:grid;
  gap:24px;
}
.grid--2{grid-template-columns:repeat(2,1fr);}
.grid--3{grid-template-columns:repeat(3,1fr);}
.grid--4{grid-template-columns:repeat(4,1fr);}

.bg-grid{
  background-image:
    linear-gradient(to right,var(--grid-line) 1px,transparent 1px),
    linear-gradient(to bottom,var(--grid-line) 1px,transparent 1px);
  background-size:48px 48px;
}

.kicker{
  display:block;
  margin-bottom:8px;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--accent);
}

.section-head{margin-bottom:28px;}
.section-head h2{margin:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 18px;
  border:2px solid var(--accent);
  background:transparent;
  color:var(--accent);
  font-family:var(--font-mono);
  font-size:.82rem;
  letter-spacing:.06em;
  text-decoration:none;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn:hover,.btn:focus-visible{
  background:var(--accent);
  color:var(--bg-base);
  box-shadow:4px 4px 0 var(--accent-2);
  transform:translate(-1px,-1px);
}
.btn--primary{
  background:var(--accent);
  color:var(--bg-base);
  font-weight:700;
}
.btn--primary:hover,.btn--primary:focus-visible{
  background:transparent;
  color:var(--accent);
  box-shadow:4px 4px 0 var(--accent);
}
.btn--secondary{
  border-color:var(--accent-2);
  color:var(--accent-2);
}
.btn--secondary:hover,.btn--secondary:focus-visible{
  background:var(--accent-2);
  color:var(--bg-base);
  box-shadow:4px 4px 0 var(--accent);
}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border:1px solid var(--divider);
  background:var(--bg-elev);
  color:var(--text-2);
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.1em;
  text-transform:uppercase;
}
.tag--live{color:var(--accent);border-color:var(--accent);}
.tag--hot{color:var(--accent-2);border-color:var(--accent-2);}

/* ---------- 卡片 ---------- */
.card{
  position:relative;
  background:var(--bg-card);
  border:1px solid var(--divider);
  padding:24px;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.card::before,.card::after{
  content:'';
  position:absolute;
  width:10px;
  height:10px;
  border-color:var(--accent);
  border-style:solid;
}
.card::before{top:-1px;left:-1px;border-width:2px 0 0 2px;}
.card::after{right:-1px;bottom:-1px;border-width:0 2px 2px 0;}
.card:hover,.card:focus-within{
  border-color:var(--accent);
  transform:translateY(-2px);
  box-shadow:6px 6px 0 rgba(57,255,136,.14);
}
.card--accent{border-left:3px solid var(--accent);}
.card--orange{border-left:3px solid var(--accent-2);}
.card__index{
  position:absolute;
  top:12px;
  right:14px;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.12em;
  color:var(--text-2);
}
.card__title{
  font-family:var(--font-heading);
  font-size:1.15rem;
  margin-bottom:.5em;
  padding-right:48px;
}
.card__body{color:var(--text-2);font-size:.95rem;margin-bottom:0;}

.panel-note{
  background:var(--bg-base);
  border-left:3px solid var(--accent-2);
  padding:16px 20px;
  margin:24px 0;
  font-size:.95rem;
  color:var(--text-2);
}
.panel-note strong{color:var(--text);}

.table-wrap{
  overflow-x:auto;
  border:1px solid var(--divider);
  background:var(--bg-card);
}
.table-wrap table{
  width:100%;
  border-collapse:collapse;
  min-width:640px;
}
.table-wrap th,.table-wrap td{
  padding:10px 14px;
  text-align:left;
  border-bottom:1px solid var(--divider);
  font-size:.9rem;
}
.table-wrap th{
  font-family:var(--font-mono);
  background:var(--bg-elev);
  color:var(--accent);
  font-weight:500;
}

/* ---------- 图片容器 ---------- */
.img-frame{
  position:relative;
  display:block;
  border:1px solid var(--divider);
  background:var(--bg-elev);
  overflow:hidden;
}
.img-frame::before{
  content:'';
  display:block;
  padding-top:56.25%;
}
.img-frame--square::before{padding-top:100%;}
.img-frame--portrait::before{padding-top:125%;}
.img-frame img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}
.img-frame__placeholder{
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  color:var(--text-2);
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.14em;
}

/* ---------- 面包屑 ---------- */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 24px;
  padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:.76rem;
  color:var(--text-2);
}
.breadcrumbs__item{display:flex;align-items:center;gap:8px;}
.breadcrumbs__item + .breadcrumbs__item::before{content:'/';color:var(--divider);}
.breadcrumbs a{color:var(--text-2);text-decoration:none;}
.breadcrumbs a:hover,.breadcrumbs a:focus-visible{color:var(--accent);}
.breadcrumbs [aria-current="page"]{color:var(--accent);}

/* ---------- 正文链接 ---------- */
.post-body{font-size:1rem;color:var(--text-2);}
.post-body a{
  color:var(--accent);
  text-decoration:underline;
  text-decoration-color:var(--divider);
  text-underline-offset:4px;
  transition:color .2s ease,text-decoration-color .2s ease;
}
.post-body a:hover,.post-body a:focus-visible{
  color:var(--accent);
  text-decoration-color:var(--accent);
}

/* ---------- 首页首屏占位 ---------- */
.page-hero{
  position:relative;
  margin-top:calc((var(--ticker-h) + var(--header-h)) * -1);
  padding:calc(var(--ticker-h) + var(--header-h) + clamp(48px,7vw,96px)) 0 clamp(32px,5vw,64px);
  border-bottom:1px solid var(--divider);
  background:
    radial-gradient(60% 70% at 90% 0%,rgba(57,255,136,.1),transparent 60%),
    radial-gradient(50% 60% at 5% 100%,rgba(255,107,26,.07),transparent 60%),
    var(--bg-base);
  overflow:hidden;
}
.page-hero::before{
  content:'';
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,var(--grid-line) 1px,transparent 1px),
    linear-gradient(to bottom,var(--grid-line) 1px,transparent 1px);
  background-size:48px 48px;
}
.page-hero > *{position:relative;}

/* ---------- Skip Link ---------- */
.skip-link{
  position:fixed;
  top:-120px;
  left:12px;
  z-index:300;
  padding:8px 16px;
  background:var(--accent);
  color:var(--bg-base);
  font-family:var(--font-mono);
  font-weight:700;
  text-decoration:none;
  transition:top .2s ease;
}
.skip-link:focus,.skip-link:focus-visible{
  top:12px;
  outline:2px solid var(--text);
  outline-offset:2px;
}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(11,16,38,.72);
  border-bottom:1px solid transparent;
  transition:background .35s ease,border-color .35s ease,box-shadow .35s ease;
}
.site-header[data-scrolled="true"]{
  background:rgba(11,16,38,.97);
  border-bottom-color:var(--divider);
  box-shadow:0 8px 24px rgba(0,0,0,.3);
}

.site-header__bar{
  display:flex;
  align-items:center;
  gap:16px;
  height:var(--header-h);
}

.site-header__coord{
  flex:0 0 auto;
  padding:3px 8px;
  border:1px solid var(--divider);
  border-left:2px solid var(--accent-2);
  background:rgba(19,26,58,.6);
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.16em;
  color:var(--text-2);
}

.site-header__brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  flex:0 0 auto;
}
.site-header__mark{
  display:grid;
  place-items:center;
  width:40px;
  height:40px;
  background:var(--bg-elev);
  color:var(--accent);
  border:2px solid var(--accent);
  font-family:var(--font-mono);
  font-size:.8rem;
  font-weight:700;
  box-shadow:3px 3px 0 var(--accent-2);
  transition:transform .2s ease,box-shadow .2s ease;
}
.site-header__brand:hover .site-header__mark,
.site-header__brand:focus-visible .site-header__mark{
  transform:translate(-1px,-1px);
  box-shadow:5px 5px 0 var(--accent-2);
}
.site-header__name{
  font-family:var(--font-heading);
  font-size:1.2rem;
  letter-spacing:.05em;
  color:var(--text);
  white-space:nowrap;
}

.site-header__cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-left:8px;
  padding:8px 14px;
  border:1px solid var(--accent);
  background:transparent;
  color:var(--accent);
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.08em;
  text-decoration:none;
  white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease;
}
.site-header__cta:hover,.site-header__cta:focus-visible{
  background:var(--accent);
  color:var(--bg-base);
  box-shadow:3px 3px 0 var(--accent-2);
}
.site-header__cta-dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:currentColor;
  animation:cta-pulse 2s ease-in-out infinite;
}
@keyframes cta-pulse{
  0%,100%{opacity:1;}
  50%{opacity:.3;}
}

.site-header__progress{
  height:2px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  transform:scaleX(0);
  transform-origin:left top;
  will-change:transform;
}

/* ---------- 公告条 ---------- */
.site-ticker{
  display:flex;
  align-items:center;
  height:var(--ticker-h);
  overflow:hidden;
  background:var(--bg-base);
  border-bottom:1px solid var(--divider);
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--text-2);
  transition:height .3s ease,border-color .3s ease;
}
.site-header[data-scrolled="true"] .site-ticker{
  height:0;
  border-bottom-width:0;
}
.site-ticker__tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:100%;
  padding:0 12px;
  background:var(--accent);
  color:var(--bg-base);
  font-size:11px;
  font-weight:700;
  letter-spacing:.1em;
  flex:0 0 auto;
}
.site-ticker__dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--bg-base);
  animation:ticker-pulse 1.6s ease-in-out infinite;
}
@keyframes ticker-pulse{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:.4;transform:scale(.75);}
}
.site-ticker__viewport{
  flex:1;
  overflow:hidden;
  height:100%;
}
.site-ticker__track{
  display:flex;
  align-items:center;
  width:max-content;
  height:100%;
  animation:ticker-slide 26s linear infinite;
}
@keyframes ticker-slide{
  from{transform:translateX(0);}
  to{transform:translateX(-50%);}
}
.site-ticker__text{
  padding-right:2.5rem;
  white-space:nowrap;
}
.site-ticker__coord{
  flex:0 0 auto;
  padding:0 12px;
  font-size:11px;
  letter-spacing:.12em;
  color:var(--accent-2);
}

/* ---------- 主导航 ---------- */
.site-nav{display:block;}
.site-nav__list{display:flex;align-items:center;gap:clamp(8px,1.6vw,26px);}
.site-nav__link{
  display:flex;
  align-items:center;
  gap:6px;
  padding:8px 2px;
  border-bottom:2px solid transparent;
  color:var(--text-2);
  font-family:var(--font-heading);
  font-size:.92rem;
  letter-spacing:.05em;
  text-decoration:none;
  transition:color .2s ease,border-color .2s ease;
}
.site-nav__link:hover,.site-nav__link:focus-visible{
  color:var(--text);
  border-bottom-color:var(--accent);
}
.site-nav__link[aria-current="page"]{
  color:var(--accent);
  border-bottom-color:var(--accent);
}
.site-nav__index{
  font-family:var(--font-mono);
  font-size:.66rem;
  color:var(--accent-2);
  opacity:.7;
}
.site-nav__link[aria-current="page"] .site-nav__index{opacity:1;}

.site-nav__toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:6px;
  width:46px;
  height:46px;
  padding:0;
  border:1px solid var(--divider);
  background:rgba(19,26,58,.6);
  cursor:pointer;
}
.site-nav__toggle-line{
  display:block;
  width:20px;
  height:2px;
  background:var(--accent);
  transition:transform .25s ease,opacity .2s ease,background .25s ease;
}
.site-nav__toggle:hover .site-nav__toggle-line{background:var(--accent-2);}
.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-line:nth-child(1){transform:translateY(8px) rotate(45deg);}
.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-line:nth-child(2){opacity:0;}
.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-line:nth-child(3){transform:translateY(-8px) rotate(-45deg);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:clamp(48px,8vw,96px);
  background-color:var(--bg-card);
  border-top:1px solid var(--divider);
  box-shadow:inset 0 3px 0 var(--accent);
}
.site-footer__grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(40px,6vw,72px);
}
.site-footer__logo{
  font-family:var(--font-heading);
  font-size:1.4rem;
  letter-spacing:.04em;
  margin-bottom:6px;
}
.site-footer__slogan{
  color:var(--text-2);
  font-size:.95rem;
  margin-bottom:14px;
}
.site-footer__code{
  display:inline-block;
  padding:4px 10px;
  border:1px solid var(--divider);
  border-left:2px solid var(--accent);
  color:var(--accent);
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.14em;
}
.site-footer__heading{
  padding-bottom:8px;
  margin-bottom:14px;
  border-bottom:1px solid var(--divider);
  font-family:var(--font-heading);
  font-size:.82rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--accent);
}
.site-footer__list{
  display:grid;
  gap:8px;
}
.site-footer__list a{
  color:var(--text-2);
  text-decoration:none;
  transition:color .2s ease,padding-left .2s ease;
}
.site-footer__list a::before{
  content:'∟ ';
  color:var(--accent);
  font-family:var(--font-mono);
  font-size:.72rem;
}
.site-footer__list a:hover,.site-footer__list a:focus-visible{
  color:var(--accent);
  padding-left:4px;
}
.site-footer__contact{
  display:grid;
  gap:10px;
}
.site-footer__contact-item{
  display:flex;
  align-items:baseline;
  gap:8px;
  color:var(--text-2);
  font-family:var(--font-mono);
  font-size:.82rem;
}
.site-footer__contact-item::before{
  content:'▪';
  color:var(--accent-2);
  font-size:.7rem;
}
.site-footer__hours{
  display:inline-block;
  margin-top:16px;
  color:var(--accent-2);
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.12em;
}
.site-footer__meta{
  border-top:1px solid var(--divider);
  padding-block:18px;
  background:var(--bg-base);
}
.site-footer__meta-inner{
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  align-items:center;
  justify-content:space-between;
  font-family:var(--font-mono);
  font-size:.78rem;
  color:var(--text-2);
}
.site-footer__copyright a{color:var(--text-2);text-decoration:none;}
.site-footer__copyright a:hover{color:var(--accent);}
.site-footer__icp{color:var(--text-2);}
.site-footer__trust{
  max-width:var(--container-w);
  margin:10px auto 0;
  padding-inline:clamp(16px,3vw,32px);
  font-size:.76rem;
  line-height:1.6;
  color:var(--text-2);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:20px;
  bottom:20px;
  z-index:90;
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  border:2px solid var(--accent);
  background:var(--bg-elev);
  color:var(--accent);
  font-size:1.1rem;
  cursor:pointer;
  box-shadow:4px 4px 0 rgba(57,255,136,.25);
  transition:background .2s ease,color .2s ease,box-shadow .2s ease;
}
.to-top:hover,.to-top:focus-visible{
  background:var(--accent);
  color:var(--bg-base);
  box-shadow:2px 2px 0 var(--accent-2);
}
.to-top[hidden]{display:none;}

/* ---------- 移动端断点 ---------- */
@media (max-width:1023.98px){
  .site-header__coord,
  .site-header__cta{display:none;}

  .site-nav{
    position:fixed;
    top:calc(var(--ticker-h) + var(--header-h));
    left:0;
    right:0;
    height:calc(100vh - var(--ticker-h) - var(--header-h));
    height:calc(100dvh - var(--ticker-h) - var(--header-h));
    z-index:115;
    display:none;
    overflow-y:auto;
    overscroll-behavior:contain;
    padding:clamp(24px,6vw,48px);
    background:rgba(11,16,38,.98);
    border-bottom:1px solid var(--divider);
  }
  .site-header[data-scrolled="true"] .site-nav{
    top:var(--header-h);
    height:calc(100vh - var(--header-h));
    height:calc(100dvh - var(--header-h));
  }
  .site-nav[data-open="true"]{display:block;}

  .site-nav__list{
    display:grid;
    gap:2px;
  }
  .site-nav__link{
    padding:14px 12px;
    border-bottom:1px solid var(--divider);
    font-size:1.08rem;
    letter-spacing:.08em;
  }
  .site-nav__link[aria-current="page"]{
    background:rgba(57,255,136,.06);
    border-left:3px solid var(--accent);
  }

  .site-nav__toggle{
    display:inline-flex;
    margin-left:auto;
  }
}

@media (max-width:767.98px){
  :root{
    --header-h:56px;
    --ticker-h:30px;
  }
  .site-header__brand{
    gap:8px;
  }
  .site-header__mark{
    width:36px;
    height:36px;
    font-size:.74rem;
  }
  .site-header__name{
    font-size:1.02rem;
  }
  .site-ticker__coord{display:none;}

  .site-footer__grid{
    grid-template-columns:1fr;
    gap:32px;
  }
  .site-footer__meta-inner{
    flex-direction:column;
    align-items:flex-start;
    gap:4px;
  }
  .to-top{
    right:14px;
    bottom:14px;
    width:40px;
    height:40px;
  }
}

@media (max-width:1023.98px) and (min-width:768px){
  .site-footer__grid{
    grid-template-columns:1fr 1fr;
  }
}

@media (max-width:639.98px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr;}
}

/* ---------- 显现协议 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .45s ease,transform .45s ease;
}
[data-reveal][data-revealed="true"]{
  opacity:1;
  transform:translateY(0);
}

/* ---------- 无障碍：减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{
    scroll-behavior:auto;
  }
  *,
  *::before,
  *::after{
    animation-duration:.001s !important;
    animation-iteration-count:1 !important;
    transition-duration:.001s !important;
  }
  .site-ticker__track{
    animation:none;
  }
  .site-ticker__text + .site-ticker__text{
    display:none;
  }
  .site-ticker__dot,
  .site-header__cta-dot{
    animation:none;
  }
  [data-reveal]{
    opacity:1;
    transform:none;
    transition:none;
  }
}

@media (prefers-reduced-motion:no-preference){
  .site-ticker__viewport{
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 1.5rem,#000 calc(100% - 1.5rem),transparent 100%);
    mask-image:linear-gradient(90deg,transparent 0,#000 1.5rem,#000 calc(100% - 1.5rem),transparent 100%);
  }
}