/* ============================================================
   南宫赛场 · 共享样式表 /assets/site.css
   骨架：居中刊头报头 + 等宽索引导航 + 夜场看台页脚
   语言：奶油纸底 / 夜场深蓝交替，2px 硬描边，无模糊偏移阴影
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --paper:#F3ECDF;
  --paper-2:#EDE3D2;
  --ink:#191310;
  --night:#0C1A31;
  --night-2:#17284A;
  --red:#D2311C;
  --yellow:#F0AE3C;
  --cyan:#2EE0C4;
  --line:#D8CDB9;
  --muted:#6B6055;
  --red-soft:#F6D8CE;
  --teal:#12796B;

  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:ui-monospace,"SF Mono","JetBrains Mono","Cascadia Mono","Consolas","Noto Sans Mono",monospace;

  --wrap:1180px;
  --header-max:1320px;
  --gutter:clamp(18px,4vw,48px);
  --bw:2px;
  --ease:cubic-bezier(.2,.8,.2,1);
  --header-offset:clamp(96px,16vh,168px);
}

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

/* ---------- 3. 中文排版与基础文字 ---------- */
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  font-weight:400;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.12;
  text-align:left;
}
h2{font-size:clamp(28px,3.4vw,48px);}
h3{font-size:clamp(20px,2vw,26px);}
strong{font-weight:700;}
.display{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(56px,9vw,152px);
  line-height:.92;
  letter-spacing:-.02em;
  font-stretch:75%;
}
.lede{
  font-size:clamp(17px,1.5vw,21px);
  line-height:1.75;
  color:var(--ink);
  max-width:36em;
}
.prose p{max-width:36em;}
.prose p + p{margin-top:1em;}
.prose a{color:var(--teal);border-bottom:1px solid var(--teal);transition:color .18s var(--ease),border-color .18s var(--ease);}
.prose a:hover{color:var(--red);border-color:var(--red);}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
#main-content,[data-anchor]{scroll-margin-top:var(--header-offset);}

/* ---------- 4. 布局工具 ---------- */
.wrap{
  width:min(calc(100% - var(--gutter) * 2),var(--wrap));
  margin-inline:auto;
}
.section{padding-block:clamp(40px,7vh,96px);}
.stack > * + *{margin-top:var(--stack-gap,16px);}
.grid{display:grid;gap:var(--grid-gap,24px);}
.grid--twelve{grid-template-columns:repeat(12,minmax(0,1fr));}

/* ---------- 5. 焦点与无障碍 ---------- */
:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}
a:focus-visible,button:focus-visible{
  text-decoration:none;
}
.skip-link{
  position:fixed;
  left:50%;
  top:0;
  z-index:400;
  transform:translate(-50%,-160%);
  display:inline-block;
  padding:10px 20px;
  background:var(--night);
  color:var(--cyan);
  border:var(--bw) solid var(--cyan);
  font-family:var(--font-mono);
  font-size:14px;
  letter-spacing:.08em;
  transition:transform .18s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translate(-50%,10px);}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 20px;
  border:var(--bw) solid var(--ink);
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:14px;
  letter-spacing:.06em;
  line-height:1.2;
  box-shadow:4px 4px 0 var(--ink);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),
             background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:10px 10px 0 var(--ink);}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink);}
.btn--red{background:var(--red);color:#FFF4EA;border-color:var(--ink);}
.btn--red:hover{background:#E23A22;}
.btn--cyan{background:var(--cyan);color:var(--night);border-color:var(--ink);}
.btn--ghost{background:transparent;box-shadow:none;}
.btn--ghost:hover{background:var(--red-soft);transform:none;box-shadow:none;}

/* ---------- 7. 索引与状态标签 ---------- */
.index-num{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.1em;
  color:var(--red);
}
.index-num::before{
  content:"";
  width:18px;
  height:2px;
  background:var(--red);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:4px 10px;
  border:1px solid var(--ink);
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  line-height:1.5;
}
.tag::before{content:"";width:7px;height:7px;background:var(--muted);flex:0 0 auto;}
.tag--live{background:var(--night);color:var(--cyan);border-color:var(--night);}
.tag--live::before{background:var(--cyan);}
.tag--wait{background:var(--yellow);color:var(--ink);border-color:var(--ink);}
.tag--wait::before{background:var(--night);}
.tag--done{background:var(--teal);color:var(--paper);border-color:var(--teal);}
.tag--done::before{background:var(--cyan);}
.tag--alert{background:var(--red-soft);color:var(--red);border-color:var(--red);}
.tag--alert::before{background:var(--red);}

/* ---------- 8. 卡片与深色分区 ---------- */
.card{
  position:relative;
  padding:clamp(18px,2.4vw,28px);
  background:var(--paper);
  border:var(--bw) solid var(--ink);
  box-shadow:8px 8px 0 var(--ink);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.card:hover{
  transform:translate(-2px,-2px);
  box-shadow:12px 12px 0 var(--ink);
  border-color:var(--red);
}
.card--dark{
  background:var(--night-2);
  color:var(--paper);
  border-color:var(--night);
  box-shadow:8px 8px 0 var(--red);
}
.card--dark:hover{border-color:var(--cyan);box-shadow:12px 12px 0 var(--red);}
.panel{
  position:relative;
  background:var(--night);
  color:var(--paper);
  overflow:hidden;
  isolation:isolate;
}
.panel::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(60% 55% at 12% 0%,rgba(46,224,196,.20),transparent 70%),
    radial-gradient(55% 45% at 88% 100%,rgba(210,49,28,.26),transparent 72%);
}
.panel a{color:var(--cyan);}
.panel a:hover{color:var(--yellow);}

/* ---------- 9. 图片容器（页面阶段放占位图/SVG） ---------- */
.figure{margin:0;position:relative;}
.figure__media{
  position:relative;
  overflow:hidden;
  border:var(--bw) solid var(--ink);
  background:
    linear-gradient(135deg,var(--night) 0%,var(--night-2) 100%);
  aspect-ratio:16 / 10;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 30px),calc(100% - 30px) 100%,0 100%);
}
.figure__media img,
.figure__media svg{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.figure--wide .figure__media{aspect-ratio:21 / 9;}
.figure--tall .figure__media{aspect-ratio:4 / 5;}
.figure--square .figure__media{aspect-ratio:1 / 1;}
.figure__caption{
  margin-top:12px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  line-height:1.7;
  color:var(--muted);
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb{margin-block:clamp(16px,2.5vh,28px);}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb__link{color:var(--teal);transition:color .18s var(--ease);}
.breadcrumb__link:hover{color:var(--red);}
.breadcrumb__sep{color:var(--line);}
.breadcrumb__current{color:var(--ink);}

/* ============================================================
   11. 页头：居中报头 + 双线导航
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--paper);
  border-bottom:var(--bw) solid var(--ink);
}
.header-progress{
  height:4px;
  background:var(--night);
  overflow:hidden;
}
.header-progress__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--red) 0%,var(--yellow) 55%,var(--cyan) 100%);
  transition:width .12s linear;
}
.masthead{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:clamp(8px,2vw,24px);
  width:min(calc(100% - var(--gutter) * 2),var(--header-max));
  margin-inline:auto;
  padding-block:14px 12px;
}
.masthead__meta{
  justify-self:start;
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
  white-space:nowrap;
}
.masthead__meta::before{
  content:"";
  width:20px;
  height:3px;
  background:var(--red);
  flex:0 0 auto;
}
.masthead__brand{
  justify-self:center;
  display:inline-flex;
  align-items:center;
  gap:12px;
  padding:2px 4px;
  transition:transform .18s var(--ease);
}
.masthead__brand:hover{transform:translateY(-1px);}
.masthead__mark{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  grid-template-rows:repeat(2,1fr);
  gap:3px;
  width:clamp(30px,3.4vw,40px);
  height:clamp(30px,3.4vw,40px);
  padding:4px;
  background:var(--night);
  border:var(--bw) solid var(--ink);
  transform:skewX(-10deg);
  flex:0 0 auto;
}
.masthead__mark i{display:block;background:var(--cyan);}
.masthead__mark i:nth-child(2){background:var(--red);}
.masthead__mark i:nth-child(3){background:var(--yellow);}
.masthead__mark i:nth-child(4){background:var(--paper);}
.masthead__text{display:block;}
.masthead__name{
  display:block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(24px,3.4vw,40px);
  line-height:.98;
  letter-spacing:-.02em;
  font-stretch:75%;
  color:var(--ink);
}
.masthead__sub{
  display:block;
  margin-top:3px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.16em;
  color:var(--muted);
}
.masthead__actions{
  justify-self:end;
  display:flex;
  align-items:center;
  gap:10px;
}
.masthead__cta{white-space:nowrap;}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 12px;
  border:var(--bw) solid var(--ink);
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  box-shadow:3px 3px 0 var(--ink);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.nav-toggle:hover{transform:translate(-1px,-1px);box-shadow:5px 5px 0 var(--ink);border-color:var(--red);}
.nav-toggle__bars{display:block;width:18px;flex:0 0 auto;}
.nav-toggle__bars i{
  display:block;
  height:2px;
  margin:4px 0;
  background:var(--ink);
  transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.nav-toggle__bars i:first-child{margin-top:0;}
.nav-toggle__bars i:last-child{margin-bottom:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) 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(-6px) rotate(-45deg);}
.nav-toggle__label{white-space:nowrap;}

/* 导航条 */
.site-nav{
  background:var(--paper);
  border-top:1px solid var(--line);
}
.site-nav__list{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:stretch;
  gap:clamp(4px,2vw,28px);
  width:min(calc(100% - var(--gutter) * 2),var(--header-max));
  margin-inline:auto;
}
.site-nav__item{display:block;}
.site-nav__link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  padding:12px 6px 14px;
  font-size:15px;
  font-weight:500;
  line-height:1.4;
  color:var(--ink);
  transition:color .18s var(--ease);
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:5px;
  height:3px;
  background:var(--red);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s var(--ease);
}
.site-nav__link:hover{color:var(--red);}
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after{transform:scaleX(1);}
.site-nav__index{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--muted);
  transition:color .18s var(--ease);
}
.site-nav__link:hover .site-nav__index{color:var(--red);}
.site-nav__link[aria-current="page"]{color:var(--red);font-weight:700;}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1);}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--ink);font-weight:700;}
.site-nav__label{display:inline-block;}

/* ============================================================
   12. 页脚：夜场看台
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(56px,10vh,120px);
  padding-top:clamp(36px,5vw,64px);
  background:var(--night);
  color:var(--paper);
  border-top:6px solid var(--night-2);
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:-6px;
  height:6px;
  background:repeating-linear-gradient(90deg,
    var(--yellow) 0 16px,
    var(--night-2) 16px 32px,
    var(--cyan) 32px 48px,
    var(--night-2) 48px 64px);
}
.site-footer__inner{
  width:min(calc(100% - var(--gutter) * 2),var(--wrap));
  margin-inline:auto;
}
.site-footer__main{
  display:grid;
  grid-template-columns:1.4fr .8fr .8fr 1.2fr;
  gap:clamp(24px,4vw,56px);
  padding-bottom:clamp(28px,4vw,48px);
}
.footer-brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(30px,4vw,46px);
  line-height:1;
  letter-spacing:-.02em;
  font-stretch:75%;
  color:var(--paper);
}
.footer-brand__note{
  margin-top:16px;
  max-width:26ch;
  font-size:15px;
  line-height:1.8;
  color:rgba(243,236,223,.74);
}
.footer-brand__meta{
  margin-top:18px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--yellow);
}
.footer-col{display:block;}
.footer-col__title{
  display:flex;
  align-items:center;
  gap:9px;
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.16em;
  line-height:1.4;
  color:var(--yellow);
}
.footer-col__title::before{
  content:"";
  width:16px;
  height:2px;
  background:var(--red);
  flex:0 0 auto;
}
.footer-col__list{display:block;}
.footer-col__link{
  position:relative;
  display:inline-block;
  padding-block:7px;
  font-size:15px;
  line-height:1.6;
  color:rgba(243,236,223,.88);
  transition:color .18s var(--ease);
}
.footer-col__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:4px;
  height:1px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s var(--ease);
}
.footer-col__link:hover{color:var(--cyan);}
.footer-col__link:hover::after,
.footer-col__link:focus-visible::after{transform:scaleX(1);}
.footer-contact__body{display:block;}
.footer-contact__row{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:12px;
  padding-block:8px;
  border-top:1px solid rgba(243,236,223,.16);
}
.footer-contact__row:first-child{border-top:0;padding-top:0;}
.footer-contact__key{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  line-height:1.9;
  color:rgba(243,236,223,.55);
}
.footer-contact__val{
  font-size:15px;
  line-height:1.7;
  color:rgba(243,236,223,.92);
  overflow-wrap:anywhere;
}
.footer-contact__tip{
  margin-top:14px;
  padding:10px 12px;
  border-left:3px solid var(--yellow);
  background:rgba(240,174,60,.12);
  font-size:13px;
  line-height:1.7;
  color:rgba(243,236,223,.82);
}
.site-footer__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  padding-block:20px 26px;
  border-top:1px solid rgba(243,236,223,.16);
}
.legal-line{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  line-height:1.7;
  color:rgba(243,236,223,.6);
}

/* ============================================================
   13. 响应式
   ============================================================ */
@media (max-width:1080px){
  .site-footer__main{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
  .footer-brand__note{max-width:40ch;}
}

@media (max-width:820px){
  body{font-size:16.5px;}
  .masthead{
    grid-template-columns:minmax(0,1fr) auto;
    gap:10px;
    padding-block:12px;
  }
  .masthead__meta{display:none;}
  .masthead__brand{justify-self:start;}
  .masthead__actions{justify-self:end;}
  .masthead__sub{font-size:10px;letter-spacing:.1em;}
  .nav-toggle{display:inline-flex;}

  .site-nav{
    display:none;
    background:var(--night);
    border-top:var(--bw) solid var(--ink);
  }
  .site-nav[data-open="true"]{display:block;}
  .site-nav__list{
    flex-direction:column;
    flex-wrap:nowrap;
    gap:0;
    width:min(calc(100% - var(--gutter) * 2),var(--header-max));
    padding-block:6px;
  }
  .site-nav__item{border-bottom:1px solid rgba(243,236,223,.14);}
  .site-nav__item:last-child{border-bottom:0;}
  .site-nav__link{
    display:flex;
    justify-content:space-between;
    align-items:center;
    width:100%;
    padding:14px 2px;
    font-size:16px;
    color:var(--paper);
  }
  .site-nav__link::after{display:none;}
  .site-nav__index{color:var(--cyan);}
  .site-nav__link:hover{color:var(--yellow);}
  .site-nav__link:hover .site-nav__index{color:var(--yellow);}
  .site-nav__link[aria-current="page"]{color:var(--yellow);}
  .site-nav__link[aria-current="page"] .site-nav__index{color:var(--yellow);}

  .grid--twelve{grid-template-columns:repeat(4,minmax(0,1fr));}
  .display{font-size:clamp(48px,13vw,96px);}
}

@media (max-width:640px){
  .site-footer__main{grid-template-columns:1fr;gap:28px;}
  .footer-brand__note{max-width:none;}
  .site-footer__legal{justify-content:flex-start;gap:6px 18px;}
  .card{box-shadow:6px 6px 0 var(--ink);}
  .card:hover{box-shadow:8px 8px 0 var(--ink);}
}

@media (max-width:560px){
  .masthead__sub{display:none;}
  .masthead__name{font-size:23px;}
  .masthead__cta{padding:10px 12px;font-size:12px;box-shadow:3px 3px 0 var(--ink);}
  .masthead__cta:hover{box-shadow:6px 6px 0 var(--ink);}
  .nav-toggle{padding:8px 10px;font-size:11px;}
  .nav-toggle__label{display:none;}
  .figure__media{clip-path:polygon(0 0,100% 0,100% calc(100% - 20px),calc(100% - 20px) 100%,0 100%);}
}

/* ---------- 14. 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;
    scroll-behavior:auto !important;
  }
  .btn:hover,
  .card:hover,
  .masthead__brand:hover,
  .nav-toggle:hover{transform:none;}
  .header-progress__bar{transition:none;}
}