/* =========================================================
   威首页看台 · /assets/site.css
   reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ========================================================= */

:root{
  /* 色彩体系：夜墨绿压结构，奶油纸白承载阅读，荧光黄绿只给当前层 */
  --ink:#0B2A22;
  --turf:#C8F24B;
  --shot:#F0532D;
  --cream:#F3EDE1;
  --soot:#191510;
  --grey:#A8B3AE;
  --line:#4E6B60;
  --sub:#F7D046;
  --brown:#6B4A2F;

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

  --rail-w:112px;
  --page-max:1280px;
  --gutter:clamp(18px,4vw,40px);
  --slant:skewX(-2deg);
}

/* ---------- reset ---------- */
*,*::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,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
summary{list-style:none}
summary::-webkit-details-marker{display:none}
:where(a,button,summary,[tabindex]):focus-visible{
  outline:2px solid var(--shot);
  outline-offset:3px;
}
::selection{background:var(--turf);color:var(--ink)}
body{
  background:var(--cream);
  color:var(--soot);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.7;
  letter-spacing:.005em;
  overflow-x:hidden;
}
[id="main-content"]{scroll-margin-top:110px}

/* ---------- 排版 ---------- */
.display{
  font-size:clamp(2.4rem,5vw,5.6rem);
  line-height:1.02;
  font-weight:800;
  letter-spacing:-.02em;
}
.headline{
  font-size:clamp(1.55rem,2.7vw,2.6rem);
  line-height:1.14;
  font-weight:800;
  letter-spacing:-.01em;
}
.subhead{
  font-size:clamp(1.15rem,1.6vw,1.5rem);
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.005em;
}
.lede{
  font-size:clamp(1.02rem,1.2vw,1.16rem);
  line-height:1.68;
  color:#2b3a33;
  max-width:62ch;
}
.prose{font-size:17px}
.prose p{max-width:68ch;margin-bottom:1.05em}
.prose p:last-child{margin-bottom:0}
.prose strong{font-weight:800;color:var(--ink)}
.slant{display:inline-block;transform:var(--slant)}
.num,.stat-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

.marker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--line);
  font-weight:700;
}
.marker::before{
  content:"";
  width:26px;
  height:4px;
  background:var(--turf);
  flex:none;
}
.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;
}

/* ---------- 布局 ---------- */
.shell{
  width:100%;
  max-width:var(--page-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(46px,7vw,96px)}
.section--ink{background:var(--ink);color:var(--cream)}
.section--grey{background:rgba(168,179,174,.34)}
.section--paper{background:var(--cream)}
.rule{border:0;border-top:1px solid var(--line);margin:0}
.grid{display:grid;gap:clamp(18px,2.4vw,32px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}
@media (max-width:860px){
  .grid--2,.grid--3,.grid--7-5,.grid--8-4{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 18px;
  font-size:13px;
  font-weight:800;
  letter-spacing:.08em;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .16s ease,background-color .16s ease,color .16s ease,border-color .16s ease;
}
.btn--turf{background:var(--turf);border-color:var(--turf);color:var(--ink)}
.btn--turf:hover{background:var(--sub);border-color:var(--sub);transform:translateY(-2px)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--cream)}
.btn--ghost:hover{border-color:var(--turf);color:var(--turf);transform:translateY(-2px)}
.btn--shot{background:var(--shot);border-color:var(--shot);color:#fff}
.btn--shot:hover{background:#d9411f;border-color:#d9411f;transform:translateY(-2px)}
.btn--ink{background:var(--ink);border-color:var(--ink);color:var(--cream)}
.btn--ink:hover{border-color:var(--ink);transform:translateY(-2px)}
.btn--sm{padding:8px 13px;font-size:12px}

/* =========================================================
   头部：双层看台
   ========================================================= */
.stadium-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--cream);
  border-bottom:1px solid var(--line);
}
.scroll-meter{
  position:absolute;
  left:0;
  top:0;
  height:3px;
  width:var(--scroll-progress,0%);
  background:linear-gradient(90deg,var(--turf),var(--sub) 55%,var(--shot));
  transition:width .12s linear;
  z-index:3;
}
.skip-link{
  position:fixed;
  left:14px;
  top:-90px;
  z-index:90;
  background:var(--turf);
  color:var(--ink);
  font-size:13px;
  font-weight:800;
  letter-spacing:.1em;
  padding:11px 18px;
  border:1px solid var(--ink);
  transition:top .18s ease;
}
.skip-link:focus{top:14px}

/* 品牌轨道：桌面端常驻左侧灯柱 */
.stand-rail{display:none}

@media (min-width:1280px){
  body{padding-left:var(--rail-w)}
  .stand-rail{
    display:flex;
    position:fixed;
    left:0;
    top:0;
    bottom:0;
    width:var(--rail-w);
    z-index:70;
    background:var(--ink);
    border-right:1px solid var(--line);
    flex-direction:column;
    align-items:center;
    justify-content:space-between;
    padding:26px 0 34px;
    gap:18px;
  }
  .stand-rail__brand{
    writing-mode:vertical-rl;
    text-orientation:upright;
    font-size:18px;
    font-weight:800;
    letter-spacing:.24em;
    color:var(--cream);
    padding:6px 4px;
    transition:color .16s ease;
  }
  .stand-rail__brand:hover{color:var(--turf)}
  .stand-rail__scale{
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:15px;
    font-family:var(--font-mono);
    font-size:11px;
    letter-spacing:.1em;
    color:var(--line);
    border-top:1px solid rgba(78,107,96,.6);
    border-bottom:1px solid rgba(78,107,96,.6);
    padding:16px 0;
  }
  .stand-rail__foot{
    writing-mode:vertical-rl;
    font-size:12.5px;
    font-weight:800;
    letter-spacing:.2em;
    color:var(--ink);
    background:var(--turf);
    padding:16px 10px;
    transition:background-color .16s ease,transform .16s ease;
  }
  .stand-rail__foot:hover{background:var(--sub);transform:translateY(-2px)}
}

/* 上层：转播字幕层 */
.header-deck{
  background:var(--ink);
  color:var(--cream);
}
.deck-inner{
  display:flex;
  align-items:center;
  gap:clamp(14px,2vw,30px);
  padding-block:13px;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex:none}
.brand__badge{
  width:38px;
  height:38px;
  flex:none;
  position:relative;
  background:var(--turf);
  transform:skewX(-8deg);
}
.brand__badge::before{
  content:"";
  position:absolute;
  inset:6px;
  border:2px solid var(--ink);
}
.brand__badge::after{
  content:"";
  position:absolute;
  left:6px;
  right:6px;
  top:calc(50% - 1px);
  height:2px;
  background:var(--ink);
}
.brand__text{display:flex;flex-direction:column;line-height:1.16}
.brand__name{
  font-size:20px;
  font-weight:800;
  letter-spacing:.03em;
  color:var(--cream);
}
.brand__tagline{
  font-size:11.5px;
  letter-spacing:.15em;
  color:var(--turf);
}
.deck-note{
  margin-left:auto;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--grey);
  white-space:nowrap;
}
.deck-note .num{color:var(--sub);font-size:14px;font-weight:700}
.deck-actions{display:flex;gap:10px;flex:none}

/* 移动端看台开关 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  margin-left:auto;
  padding:9px 13px;
  font-size:12px;
  font-weight:800;
  letter-spacing:.14em;
  color:var(--cream);
  border:1px solid var(--line);
  cursor:pointer;
  transition:border-color .16s ease,color .16s ease,background-color .16s ease;
}
.nav-toggle:hover{border-color:var(--turf);color:var(--turf)}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:18px;
  height:12px;
  border-top:2px solid currentColor;
  border-bottom:2px solid currentColor;
}
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:3px;
  height:2px;
  background:currentColor;
}
.nav-toggle[aria-expanded="true"]{
  background:var(--turf);
  border-color:var(--turf);
  color:var(--ink);
}

/* 下层：看台层编号方块导航 */
.header-tiers{
  background:var(--cream);
  border-top:1px solid rgba(11,42,34,.14);
}
.tier-list{
  display:flex;
  align-items:stretch;
}
.tier-list > li{flex:1 1 0;min-width:0}
.tier-link{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:3px;
  height:100%;
  padding:13px 16px 17px;
  border-left:1px solid rgba(78,107,96,.4);
  transition:background-color .16s ease,color .16s ease;
}
.tier-list > li:last-child .tier-link{border-right:1px solid rgba(78,107,96,.4)}
.tier-link__no{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--line);
}
.tier-link__name{
  font-size:15px;
  font-weight:800;
  letter-spacing:.03em;
  color:var(--soot);
}
.tier-link__hint{
  font-size:11.5px;
  letter-spacing:.06em;
  color:#6d7b75;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.tier-link::after{
  content:"";
  position:absolute;
  left:16px;
  bottom:9px;
  width:0;
  height:4px;
  background:var(--turf);
  transition:width .18s ease;
}
.tier-link:hover{background:rgba(200,242,75,.2)}
.tier-link:hover .tier-link__name{color:var(--ink)}
.tier-link:hover::after{width:26px}
.tier-link[aria-current="page"]{background:var(--ink)}
.tier-link[aria-current="page"] .tier-link__no{color:var(--turf)}
.tier-link[aria-current="page"] .tier-link__name{color:var(--cream)}
.tier-link[aria-current="page"] .tier-link__hint{color:var(--grey)}
.tier-link[aria-current="page"]::after{width:26px}
.tier-link:focus-visible{outline-offset:-3px}

@media (max-width:1080px){
  .deck-note{display:none}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .header-tiers{display:none}
  .header-tiers[data-open]{
    display:block;
    max-height:min(72vh,560px);
    overflow-y:auto;
    border-top-color:var(--ink);
  }
  .tier-list{flex-direction:column;padding-block:6px}
  .tier-list > li{flex:none}
  .tier-link{
    flex-direction:row;
    align-items:baseline;
    gap:12px;
    padding:14px var(--gutter);
    border-left:0;
    border-bottom:1px solid rgba(78,107,96,.34);
  }
  .tier-list > li:last-child .tier-link{border-right:0;border-bottom:0}
  .tier-link::after{left:var(--gutter);bottom:6px}
  .tier-link__hint{white-space:normal}
}
@media (max-width:620px){
  .deck-actions{display:none}
  .brand__tagline{font-size:10.5px;letter-spacing:.1em}
}

/* =========================================================
   页脚：夜场看台底座
   ========================================================= */
.stand-footer{
  position:relative;
  background:var(--ink);
  color:var(--cream);
  border-top:4px solid var(--turf);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.35fr .85fr .95fr .85fr 1.5fr;
  gap:clamp(20px,3vw,34px);
  padding-block:clamp(44px,6vw,74px) clamp(30px,4vw,48px);
}
.footer-brand__mark{
  display:inline-block;
  font-size:22px;
  font-weight:800;
  letter-spacing:.04em;
  color:var(--cream);
  transform:var(--slant);
  border-bottom:4px solid var(--turf);
  padding-bottom:6px;
  transition:color .16s ease;
}
.footer-brand__mark:hover{color:var(--turf)}
.footer-brand__line{
  margin-top:16px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--turf);
}
.footer-brand__meta{
  margin-top:10px;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--grey);
  max-width:32ch;
}
.footer-col__title{
  font-size:12px;
  font-weight:800;
  letter-spacing:.18em;
  color:var(--turf);
  padding-bottom:10px;
  margin-bottom:12px;
  border-bottom:1px solid rgba(78,107,96,.7);
}
.footer-list li + li{margin-top:2px}
.footer-link{
  display:inline-block;
  padding:5px 0;
  font-size:14px;
  color:#cfe0d8;
  transition:color .16s ease,transform .16s ease;
}
.footer-link:hover{color:var(--turf);transform:translateX(3px)}
.footer-contact__row{
  display:flex;
  gap:10px;
  align-items:baseline;
  font-size:13.5px;
  padding:5px 0;
  color:#cfe0d8;
}
.footer-contact__key{
  flex:none;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--line);
  border:1px solid rgba(78,107,96,.8);
  padding:1px 6px;
  color:var(--grey);
}
.footer-contact__val{word-break:break-word}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 26px;
  padding-block:18px 22px;
  border-top:1px solid var(--line);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--grey);
}
.footer-legal .legal-line{
  font-family:var(--font-mono);
  color:var(--cream);
  border-left:3px solid var(--shot);
  padding-left:9px;
}
.footer-legal .copyright{color:#cfe0d8}
.footer-legal .legal-note{margin-left:auto}

.to-top{
  position:fixed;
  right:18px;
  bottom:18px;
  z-index:65;
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:12px 16px;
  font-size:12px;
  font-weight:800;
  letter-spacing:.12em;
  color:var(--ink);
  background:var(--turf);
  border:1px solid var(--ink);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease,background-color .16s ease;
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--sub)}
.to-top__arrow{font-family:var(--font-mono)}

@media (max-width:1080px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
  .footer-contact{grid-column:1 / -1}
  .footer-legal .legal-note{margin-left:0}
}
@media (max-width:620px){
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .to-top{right:12px;bottom:12px}
}

/* =========================================================
   通用组件（供各页面搭建看台层）
   ========================================================= */
.panel{
  background:var(--cream);
  border:1px solid var(--line);
  padding:clamp(20px,2.4vw,30px);
}
.panel--ink{background:var(--ink);color:var(--cream);border-color:var(--ink)}
.panel--data{background:rgba(168,179,174,.28);border-color:rgba(78,107,96,.5)}

.breadcrumbs{padding-block:14px}
.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;letter-spacing:.1em;color:var(--line)}
.breadcrumbs li{display:flex;align-items:center;gap:8px}
.breadcrumbs li::after{content:"/";color:var(--line)}
.breadcrumbs li:last-child::after{content:""}
.breadcrumbs a:hover{color:var(--ink);text-decoration:underline}

.stand-table th{
  text-align:left;
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--line);
  font-weight:800;
  padding:10px 12px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.stand-table td{
  padding:11px 12px;
  font-size:14px;
  border-bottom:1px solid rgba(78,107,96,.28);
}
.stand-table tbody tr:nth-child(even){background:rgba(168,179,174,.2)}
.stand-table .num{font-weight:700;color:var(--ink)}
.section--ink .stand-table th{color:var(--turf);border-bottom-color:var(--line)}
.section--ink .stand-table td{border-bottom-color:rgba(78,107,96,.7)}
.section--ink .stand-table .num{color:var(--sub)}

.metric-strip{
  display:flex;
  gap:1px;
  background:var(--line);
  border-block:1px solid var(--line);
  overflow-x:auto;
  scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;
}
.metric-strip__item{
  flex:0 0 clamp(160px,22vw,240px);
  scroll-snap-align:start;
  background:var(--cream);
  padding:18px 20px;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.metric-strip__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(1.4rem,2.2vw,2rem);
  font-weight:700;
  color:var(--ink);
  line-height:1.1;
}
.metric-strip__label{
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--line);
}

.tag{
  display:inline-flex;
  align-items:center;
  padding:6px 12px;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--ink);
  border:1px solid var(--line);
  background:transparent;
  cursor:pointer;
  transition:background-color .16s ease,border-color .16s ease,color .16s ease,transform .16s ease;
}
.tag:hover{border-color:var(--turf);background:rgba(200,242,75,.24);transform:translateY(-2px)}
.tag.is-active,.tag[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--turf)}

.disclosure{border-top:1px solid var(--line)}
.disclosure > summary{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:14px;
  padding:16px 0;
  font-size:15px;
  font-weight:800;
  cursor:pointer;
  transition:color .16s ease;
}
.disclosure > summary::after{
  content:"＋";
  font-family:var(--font-mono);
  color:var(--line);
}
.disclosure[open] > summary::after{content:"－";color:var(--shot)}
.disclosure > summary:hover{color:var(--ink)}
.disclosure__body{padding-bottom:18px;font-size:15px;color:#2b3a33}
.disclosure:last-of-type{border-bottom:1px solid var(--line)}

/* 图片容器：页面阶段放置体育场、射门瞬间、数据图表、旧版客户端截图 */
.img-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/10;
  background:var(--grey);
  border:1px solid var(--line);
}
.img-frame--wide{aspect-ratio:21/9}
.img-frame--tall{aspect-ratio:3/4}
.img-frame--square{aspect-ratio:1/1}
.img-frame img{width:100%;height:100%;object-fit:cover}
.img-frame__grid{
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(243,237,225,.22) 1px,transparent 1px),
    linear-gradient(90deg,rgba(243,237,225,.22) 1px,transparent 1px);
  background-size:44px 44px;
}
.img-frame__tag{
  position:absolute;
  left:0;
  bottom:0;
  padding:6px 11px;
  background:var(--ink);
  color:var(--turf);
  font-size:11px;
  letter-spacing:.14em;
}

/* ---------- 动效与可访问性 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .5s ease,transform .5s ease;
}
[data-reveal].is-revealed{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  [data-reveal]{opacity:1;transform:none}
  .scroll-meter{transition:none}
  .to-top{transform:none}
  .btn:hover,.tag:hover,.stand-rail__foot:hover,.footer-link:hover{transform:none}
}