/* ===== YOBO体育 · 共享站台样式 /assets/site.css ===== */
:root{
  --ink:#071510;
  --ink-2:#0A1D16;
  --moss:#0E2A1F;
  --sage:#4F6B4E;
  --lime:#C7FF3D;
  --lime-soft:#E6FF9B;
  --paper:#F4F1E8;
  --cream:#EFE8D8;
  --char:#191C19;
  --stone:#8F9A8C;
  --clay:#C25A38;
  --line:rgba(199,255,61,.26);
  --line-soft:rgba(244,241,232,.14);
  --shadow:8px 8px 0 rgba(0,0,0,.55);
  --shadow-sm:4px 4px 0 rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.8,.2,1);
  --dur:200ms;
  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono","SFMono-Regular",ui-monospace,monospace;
  --shell-w:1240px;
  --edge:clamp(1rem,4vw,2.5rem);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{max-width:100%;height:auto;display:block;}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.05;
  letter-spacing:-.02em;
  margin:0 0 .6em;
  color:var(--paper);
}
h1{font-size:clamp(2.6rem,6vw,4.6rem);line-height:.98;}
h2{font-size:clamp(1.8rem,3.6vw,3.2rem);}
h3{font-size:clamp(1.15rem,1.6vw,1.5rem);line-height:1.3;}
p{margin:0 0 1.1em;}
a{color:var(--lime);text-decoration:none;}
a:hover{color:var(--lime-soft);}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
button{font:inherit;color:inherit;}
strong{font-weight:800;}
hr{border:0;border-top:2px solid var(--line-soft);margin:2rem 0;}
::selection{background:var(--lime);color:var(--ink);}

:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:2px;
  box-shadow:0 0 0 4px rgba(7,21,16,.9);
}

.shell{
  width:100%;
  max-width:var(--shell-w);
  margin-inline:auto;
  padding-inline:var(--edge);
}
.mono{font-family:var(--font-mono);font-weight:600;letter-spacing:.04em;}

/* ---- 跳过链接 ---- */
.skip-link{
  position:fixed;
  left:var(--edge);
  top:.75rem;
  z-index:200;
  transform:translateY(-220%);
  background:var(--lime);
  color:var(--ink);
  font-weight:900;
  padding:.65rem 1.1rem;
  border:2px solid var(--ink);
  box-shadow:var(--shadow-sm);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translateY(0);color:var(--ink);}

/* ---- 滚动进度条 ---- */
.scroll-meter{
  position:fixed;
  inset-inline:0;
  top:0;
  height:3px;
  z-index:130;
  pointer-events:none;
  background:rgba(7,21,16,.4);
}
.scroll-meter i{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--lime),var(--lime-soft));
}

/* ================= 头部 ================= */
.site-header{
  position:relative;
  z-index:80;
  background:var(--ink);
  border-bottom:2px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  inset:auto 0 0;
  height:6px;
  background:repeating-linear-gradient(135deg,var(--lime) 0 8px,transparent 8px 16px);
  opacity:.16;
  pointer-events:none;
}

/* 顶部快捷栏 */
.topbar{
  background:var(--char);
  border-bottom:1px solid var(--line-soft);
  color:var(--paper);
}
.topbar__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  min-height:40px;
  padding-block:.25rem;
}
.topbar__note{
  margin:0;
  display:flex;
  align-items:center;
  gap:.55rem;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--stone);
}
.live-dot{
  width:8px;height:8px;flex:0 0 auto;
  border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 3px rgba(199,255,61,.18);
}
.utility{
  display:flex;
  align-items:center;
  gap:.15rem;
  flex-wrap:wrap;
}
.utility__link{
  display:inline-block;
  padding:.35rem .65rem;
  font-size:12.5px;
  font-weight:700;
  color:var(--paper);
  border:1px solid transparent;
  border-radius:2px;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.utility__link:hover,
.utility__link:focus-visible{
  background:rgba(199,255,61,.12);
  border-color:var(--line);
  color:var(--lime);
}

/* 刊头 */
.masthead{
  position:relative;
  background:linear-gradient(180deg,#0A2018 0%,#071510 100%);
}
.masthead__inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:1.25rem;
  padding-block:clamp(1.1rem,2.4vw,1.9rem);
}
.masthead__issue{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--stone);
  writing-mode:vertical-rl;
  justify-self:start;
  max-height:5.5rem;
}
.brand{
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  gap:.3rem;
  color:var(--paper);
  text-align:center;
}
.brand:hover{color:var(--paper);}
.brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.7rem,4.4vw,2.85rem);
  line-height:.95;
  letter-spacing:-.03em;
  transform:skewX(-4deg);
  display:inline-block;
}
.brand__tagline{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.34em;
  text-transform:uppercase;
  color:var(--lime);
  border-top:1px solid var(--line);
  padding-top:.3rem;
}
.masthead__actions{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:.55rem;
  justify-self:end;
}

/* 栏目折叠按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:.5rem;
  padding:.5rem .7rem;
  background:transparent;
  color:var(--paper);
  border:2px solid var(--line);
  border-radius:2px;
  font-weight:800;
  font-size:13px;
  cursor:pointer;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-toggle:hover{background:rgba(199,255,61,.1);border-color:var(--lime);}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:3px;}
.nav-toggle__bars i{
  display:block;width:16px;height:2px;
  background:var(--lime);
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* 栏目带 */
.site-nav{
  background:var(--ink-2);
  border-top:1px solid var(--line-soft);
  overflow:hidden;
}
.site-nav__list{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:.2rem;
  padding:.45rem 0 .6rem;
}
.site-nav__link{
  display:inline-flex;
  align-items:baseline;
  gap:.45rem;
  padding:.55rem .9rem;
  color:var(--paper);
  font-weight:700;
  font-size:15px;
  border:2px solid transparent;
  border-radius:2px;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-nav__num{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.1em;
  color:var(--stone);
}
.site-nav__link:hover,
.site-nav__link:focus-visible{
  color:var(--lime);
  border-color:var(--line);
  background:rgba(199,255,61,.07);
  transform:translateY(-2px);
}
.site-nav__link[aria-current="page"]{
  background:var(--lime);
  color:var(--ink);
  border-color:var(--lime);
  box-shadow:var(--shadow-sm);
}
.site-nav__link[aria-current="page"] .site-nav__num{color:var(--ink);opacity:.62;}

/* 移动端固定入口 */
.dock{display:none;}

/* ================= 通用组件 ================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.45rem;
  padding:.72rem 1.15rem;
  border:2px solid var(--line);
  border-radius:2px;
  background:transparent;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:15px;
  font-weight:800;
  letter-spacing:.02em;
  cursor:pointer;
  text-align:center;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn:hover{
  transform:translate(-2px,-2px);
  box-shadow:var(--shadow-sm);
  color:var(--lime);
  border-color:var(--lime);
}
.btn--lime{
  background:var(--lime);
  border-color:var(--lime);
  color:var(--ink);
  box-shadow:var(--shadow-sm);
}
.btn--lime:hover{
  color:var(--ink);
  background:var(--lime-soft);
  border-color:var(--lime-soft);
  box-shadow:6px 6px 0 rgba(0,0,0,.6);
}
.btn--ghost{
  border-color:rgba(244,241,232,.45);
  color:var(--paper);
}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime);}
.btn--clay{
  background:var(--clay);
  border-color:var(--clay);
  color:var(--paper);
}
.btn--clay:hover{background:#a94a2c;border-color:#a94a2c;color:var(--paper);}
.btn--sm{padding:.45rem .85rem;font-size:13.5px;}

.card{
  position:relative;
  background:var(--moss);
  border:2px solid var(--line);
  border-radius:2px;
  padding:clamp(1rem,2.2vw,1.5rem);
}
.card--folder{
  background:var(--moss);
  clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,0 100%);
}
.card--paper{
  background:var(--cream);
  color:var(--char);
  border-color:rgba(25,28,25,.28);
  box-shadow:var(--shadow);
}
.card--paper h2,.card--paper h3,.card--paper h4{color:var(--char);}
.card--paper a{color:var(--clay);}

.tag{
  display:inline-block;
  padding:.16rem .55rem;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--lime);
  border:2px solid var(--line);
  border-radius:2px;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,0 100%);
}
.tag--soft{
  background:var(--lime-soft);
  color:var(--ink);
  border-color:var(--lime-soft);
}

.v-note{
  writing-mode:vertical-rl;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--stone);
  margin:0;
}

/* 图片容器协议（页面阶段放 img 占位） */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16/10;
  border:2px solid var(--line);
  background:
    repeating-linear-gradient(135deg,rgba(79,107,78,.35) 0 10px,rgba(14,42,31,.9) 10px 20px);
  box-shadow:var(--shadow);
}
.media-frame img,
.media-frame__img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  transition:transform 320ms var(--ease);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,21,16,0) 38%,rgba(7,21,16,.82) 100%);
  pointer-events:none;
}
.media-frame:hover img{transform:scale(1.04);}
.media-frame--tall{aspect-ratio:4/5;}
.media-frame--wide{aspect-ratio:21/9;}
.media-frame__cap{
  position:absolute;
  left:0;bottom:0;
  z-index:2;
  padding:.6rem .85rem;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--lime-soft);
}

/* 章节标题 */
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:1rem;
  flex-wrap:wrap;
  padding-bottom:.9rem;
  margin-bottom:clamp(1.2rem,2.5vw,2rem);
  border-bottom:2px solid var(--line);
}
.sec-head__title{margin:0;font-size:clamp(1.5rem,3vw,2.3rem);}
.sec-head__note{
  margin:0;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--stone);
}

/* 栅格 */
.grid{display:grid;gap:clamp(1rem,2.5vw,2rem);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--split{grid-template-columns:minmax(0,7fr) minmax(0,5fr);}

/* 正文 */
.prose{max-width:38em;font-size:17px;line-height:1.8;}
.prose p{margin:0 0 1.15em;}
.prose h2,.prose h3{margin-top:1.8em;margin-bottom:.6em;}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.15em;}
.prose li{list-style:disc;margin-bottom:.4em;}
.surface-paper{
  background:var(--cream);
  color:var(--char);
}
.surface-paper h1,.surface-paper h2,.surface-paper h3,.surface-paper h4{color:var(--char);}
.surface-paper a{color:var(--clay);}
.surface-paper .sec-head{border-bottom-color:rgba(25,28,25,.28);}
.surface-paper .sec-head__note{color:#5C6A58;}

/* 面包屑 */
.crumbs{margin:0 0 1.5rem;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;}
.crumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem;}
.crumbs__list li{display:flex;align-items:center;gap:.4rem;color:var(--stone);}
.crumbs__list li+li::before{content:"/";color:var(--sage);}
.crumbs__link{color:var(--stone);}
.crumbs__link:hover{color:var(--lime);}

/* 进入视口显现 */
html.js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity 240ms var(--ease),transform 240ms var(--ease);
}
html.js [data-reveal].is-visible{opacity:1;transform:none;}

/* ================= 页脚 ================= */
.site-footer{
  position:relative;
  margin-top:clamp(3rem,6vw,6rem);
  background:var(--char);
  color:var(--paper);
  border-top:2px solid var(--lime);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto;
  height:10px;
  background:repeating-linear-gradient(135deg,var(--lime) 0 10px,transparent 10px 20px);
  opacity:.16;
  pointer-events:none;
}
.footer__inner{
  display:grid;
  grid-template-columns:1.15fr .85fr 1.15fr;
  gap:clamp(1.5rem,3vw,2.75rem);
  padding-block:clamp(2rem,4vw,3.25rem) clamp(1.25rem,2.5vw,2rem);
}
.footer__brand{display:flex;flex-direction:column;align-items:flex-start;gap:.85rem;}
.brand--footer{align-items:flex-start;text-align:left;}
.brand--footer .brand__name{font-size:clamp(1.5rem,3vw,2.1rem);}
.brand--footer .brand__tagline{font-size:10px;letter-spacing:.28em;}
.footer__line{
  margin:0;
  font-size:14.5px;
  color:var(--stone);
  max-width:22em;
  line-height:1.7;
}
.footer__reply{
  margin:0;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--sage);
}
.footer__title{
  margin:0 0 1rem;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--lime);
}
.footer__links{display:grid;gap:.15rem;}
.footer__links a{
  display:inline-block;
  padding:.32rem 0;
  color:var(--paper);
  font-size:15px;
  font-weight:600;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer__links a:hover,
.footer__links a:focus-visible{
  color:var(--lime);
  border-bottom-color:var(--line);
  transform:translateX(3px);
}
.footer__contact{
  background:#101410;
  border-color:var(--line);
  box-shadow:var(--shadow);
}
.footer__list{margin:0;}
.footer__list dt{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--stone);
  margin-bottom:.2rem;
}
.footer__list dd{
  margin:0 0 .85rem;
  font-size:14.5px;
  line-height:1.6;
  color:var(--paper);
  word-break:break-word;
}
.footer__list dd:last-child{margin-bottom:0;}
.footer__value{font-weight:700;}
.footer__note{color:var(--stone);font-size:13.5px;}
.footer__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.6rem 1.5rem;
  padding-block:1.1rem 1.4rem;
  border-top:1px solid var(--line-soft);
  font-size:12.5px;
  color:var(--stone);
}
.footer__legal-links{display:flex;flex-wrap:wrap;gap:1.1rem;}
.footer__legal-links a{color:var(--paper);font-weight:600;}
.footer__legal-links a:hover,
.footer__legal-links a:focus-visible{color:var(--lime);}
.footer__icp{margin:0;color:var(--stone);font-size:12px;}
.footer__copy{margin:0;color:var(--stone);}

/* 返回顶部 */
.to-top{
  position:fixed;
  right:clamp(.85rem,3vw,1.75rem);
  bottom:clamp(.85rem,3vw,1.75rem);
  z-index:110;
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.6rem .9rem;
  background:var(--ink);
  color:var(--lime);
  border:2px solid var(--lime);
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  cursor:pointer;
  box-shadow:var(--shadow-sm);
  opacity:0;
  transform:translateY(10px);
  pointer-events:none;
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.to-top[data-visible]{
  opacity:1;
  transform:none;
  pointer-events:auto;
}
.to-top:hover{background:var(--moss);color:var(--lime-soft);}

/* ================= 响应式 ================= */
@media (max-width:1040px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer__inner{grid-template-columns:1fr 1fr;}
  .footer__contact{grid-column:1 / -1;}
}

@media (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .site-nav{
    max-height:0;
    visibility:hidden;
    transition:max-height 240ms var(--ease),visibility 240ms var(--ease);
  }
  .site-nav[data-open]{
    max-height:36rem;
    visibility:visible;
  }
  .site-nav__list{
    flex-direction:column;
    justify-content:flex-start;
    gap:0;
    padding:.4rem 0 .8rem;
  }
  .site-nav__list li{width:100%;}
  .site-nav__link{
    width:100%;
    justify-content:flex-start;
    padding:.85rem .35rem;
    border-width:0 0 1px 0;
    border-color:var(--line-soft);
    border-radius:0;
    font-size:16px;
  }
  .site-nav__link:hover,
  .site-nav__link:focus-visible{transform:none;background:rgba(199,255,61,.08);}
  .site-nav__link[aria-current="page"]{box-shadow:none;border-radius:0;}

  .masthead__inner{
    grid-template-columns:1fr auto;
    gap:.75rem;
    padding-block:1rem;
  }
  .masthead__issue{display:none;}
  .brand{align-items:flex-start;text-align:left;grid-column:1;grid-row:1;}
  .masthead__actions{grid-column:2;grid-row:1;}
  .brand__name{font-size:clamp(1.5rem,6.5vw,2.1rem);}
  .brand__tagline{font-size:9.5px;letter-spacing:.24em;}

  .topbar__note{font-size:10.5px;letter-spacing:.1em;}
  .utility__link{padding:.3rem .5rem;font-size:12px;}

  .grid--split,.grid--2,.grid--3{grid-template-columns:minmax(0,1fr);}

  .dock{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    position:fixed;
    inset:auto 0 0;
    z-index:115;
    background:rgba(7,21,16,.96);
    border-top:2px solid var(--line);
    backdrop-filter:blur(6px);
  }
  .dock__link{
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:.15rem;
    padding:.55rem .25rem .6rem;
    color:var(--paper);
    font-size:12px;
    font-weight:700;
    letter-spacing:.06em;
    border-inline-end:1px solid var(--line-soft);
  }
  .dock__link:last-child{border-inline-end:0;}
  .dock__link:hover,
  .dock__link:focus-visible{color:var(--lime);background:rgba(199,255,61,.1);}
  .dock__icon{font-size:13px;color:var(--lime);line-height:1;}

  body{padding-bottom:4.4rem;}
  .to-top{bottom:5.2rem;}
  .footer__inner{grid-template-columns:minmax(0,1fr);}
  .footer__contact{grid-column:auto;}
  .footer__legal{flex-direction:column;align-items:flex-start;gap:.5rem;padding-bottom:1.6rem;}
}

@media (max-width:560px){
  .masthead__actions .btn{display:none;}
  .topbar__note{display:none;}
  .topbar__inner{justify-content:flex-end;}
  .utility{gap:.1rem;}
  .footer__legal-links{gap:.85rem;}
  h1{font-size:clamp(2rem,9vw,2.8rem);}
}

@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;
  }
  html.js [data-reveal]{opacity:1;transform:none;}
  .to-top{transform:none;}
}