/* =========================================================
   趣体育主站 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 页头 / 页脚 / 基础组件
   ========================================================= */

:root{
  --paper:#F7F3EA;
  --ink:#14181C;
  --ink-soft:#2A3038;
  --rule:#D8D2C4;
  --green:#4E8C46;
  --green-pale:#A8C79A;
  --blue:#12688F;
  --blue-pale:#7FC0DA;
  --orange:#E8622A;
  --orange-pale:#F4B183;
  --paper-on-ink:#EFE9DC;

  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"Roboto Mono","JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;

  --shell:min(100% - 2.75rem, 1360px);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:auto;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
hr{border:0;border-top:1px solid var(--rule);margin:2rem 0}
strong{color:var(--ink)}

/* ---------- 中文排版 ---------- */
h1,h2,h4{
  font-family:var(--font-serif);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.2;
  color:var(--ink);
}
h1{font-size:clamp(2.2rem,4.6vw,3.6rem)}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
h3{font-family:var(--font-sans);font-size:1.1rem;font-weight:700;letter-spacing:0;line-height:1.4;color:var(--ink)}
h4{font-size:1.02rem}
p{max-width:78ch}
.num,.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:0}

/* ---------- 焦点与动效基线 ---------- */
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.site-footer :focus-visible{outline-color:var(--blue-pale)}

.reveal{opacity:0;transform:translateY(8px);transition:opacity .3s var(--ease),transform .3s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

.scroll-progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:var(--orange);z-index:90;pointer-events:none;
}
.to-top{
  position:fixed;right:1.15rem;bottom:1.15rem;z-index:80;
  display:none;align-items:center;gap:.35rem;
  padding:.65rem .85rem;
  background:var(--ink);color:var(--paper-on-ink);
  border:1px solid var(--ink);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.to-top[data-visible="true"]{display:inline-flex}
.to-top:hover{background:var(--green);border-color:var(--green)}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;left:.75rem;top:-4.5rem;z-index:120;
  padding:.6rem 1rem;
  background:var(--ink);color:var(--paper-on-ink);
  font-size:13px;letter-spacing:.08em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:.75rem;text-decoration:none}

/* =========================================================
   页头
   ========================================================= */
.site-header{
  position:sticky;top:0;z-index:70;
  background:var(--paper);
  border-bottom:1px solid var(--rule);
}
.header-ruler{
  height:6px;
  background:repeating-linear-gradient(90deg,var(--ink) 0 1px,transparent 1px 26px);
  opacity:.45;
  transition:height .24s var(--ease);
}
.header-bar{background:var(--paper)}
.header-inner{
  width:var(--shell);margin-inline:auto;
  display:flex;align-items:center;justify-content:space-between;gap:1.5rem;
  padding:.8rem 0 .72rem;
}

.brand{display:flex;align-items:baseline;gap:.7rem;color:var(--ink);text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  font-family:var(--font-serif);font-weight:900;
  font-size:1.5rem;letter-spacing:-.02em;line-height:1;
}
.brand-mark::after{
  content:"";display:block;height:3px;width:100%;
  background:var(--green);margin-top:.28rem;
}
.brand-sub{
  font-size:12px;letter-spacing:.12em;color:var(--ink-soft);
  border-left:1px solid var(--rule);padding-left:.7rem;
  white-space:nowrap;
}

.nav-toggle{
  display:none;align-items:center;gap:.5rem;
  padding:.5rem .7rem;
  border:1px solid var(--rule);color:var(--ink);
  font-size:12px;letter-spacing:.14em;margin-left:auto;
}
.nav-toggle-bars{display:block;width:16px;height:2px;background:var(--ink);position:relative}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);
}
.nav-toggle-bars::before{top:-5px}
.nav-toggle-bars::after{top:5px}
.site-header[data-nav-open="true"] .nav-toggle{background:var(--ink);color:var(--paper-on-ink);border-color:var(--ink)}
.site-header[data-nav-open="true"] .nav-toggle-bars,
.site-header[data-nav-open="true"] .nav-toggle-bars::before,
.site-header[data-nav-open="true"] .nav-toggle-bars::after{background:var(--paper-on-ink)}

.site-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:.15rem}
.nav-list a{
  display:inline-block;
  padding:.45rem .7rem;
  font-size:13px;letter-spacing:.08em;
  color:var(--ink-soft);
  border-bottom:2px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.nav-list a:hover{color:var(--blue);border-bottom-color:var(--blue-pale);text-decoration:none;background:rgba(127,192,218,.12)}
.nav-list a[aria-current="page"]{color:var(--green);border-bottom-color:var(--green);background:rgba(168,199,154,.2)}

.tag-band{background:var(--paper);border-top:1px solid var(--rule)}
.tag-band-inner{
  width:var(--shell);margin-inline:auto;
  display:flex;align-items:center;gap:.45rem;
  padding:.5rem 0 .55rem;
  overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.tag-band-inner::-webkit-scrollbar{display:none}
.tag-band-label{
  flex:none;
  font-size:12px;letter-spacing:.14em;color:var(--green);white-space:nowrap;
  padding-right:.35rem;
}
.tag{
  flex:none;
  padding:.28rem .6rem;
  border:1px solid var(--rule);
  font-size:12px;letter-spacing:.08em;
  color:var(--ink-soft);white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
button.tag:hover{border-color:var(--green);color:var(--green)}
button.tag[aria-pressed="true"]{background:var(--green);border-color:var(--green);color:var(--paper)}
.tag-quick{border-color:var(--blue);color:var(--blue)}
.tag-quick:hover{background:var(--blue);color:var(--paper);text-decoration:none}
.tag-quick:last-child{border-color:var(--orange);color:var(--orange)}
.tag-quick:last-child:hover{background:var(--orange);border-color:var(--orange);color:#fff}
.tag-sep{flex:none;width:1px;height:16px;background:var(--rule);margin:0 .3rem}

.site-header[data-stuck="true"] .header-ruler{height:3px}
.site-header[data-stuck="true"] .tag-band{display:none}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  background:var(--ink);color:var(--paper-on-ink);
  margin-top:4.5rem;
  border-top:4px solid var(--green);
}
.footer-inner{
  width:var(--shell);margin-inline:auto;
  padding:3.2rem 0 2.4rem;
  display:grid;gap:2.25rem;
  grid-template-columns:1.5fr 1fr 1.5fr 1fr;
}
.footer-col{min-width:0}
.footer-logo{
  font-family:var(--font-serif);font-weight:900;
  font-size:1.55rem;letter-spacing:-.02em;color:var(--paper-on-ink);line-height:1.1;
}
.footer-tagline{
  margin-top:.55rem;
  font-size:13px;letter-spacing:.04em;color:var(--green-pale);
}
.footer-note{
  margin-top:.9rem;
  font-size:13px;line-height:1.8;color:rgba(239,233,220,.72);max-width:34ch;
}
.footer-title{
  font-family:var(--font-sans);font-weight:600;
  font-size:12px;letter-spacing:.16em;color:var(--green-pale);
  padding-bottom:.5rem;margin-bottom:.85rem;
  border-bottom:1px solid rgba(239,233,220,.18);
}
.footer-links li + li{margin-top:.35rem}
.footer-links a{
  font-size:14px;color:var(--paper-on-ink);letter-spacing:.03em;
  border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-links a:hover{color:var(--blue-pale);border-bottom-color:var(--blue-pale);text-decoration:none}
.footer-contact{margin-top:.2rem}
.footer-contact li{
  display:grid;grid-template-columns:3.2rem 1fr;gap:.4rem;
  padding:.32rem 0;
  border-bottom:1px solid rgba(239,233,220,.12);
  font-size:13px;
}
.footer-key{color:var(--green-pale);letter-spacing:.08em}
.footer-value{color:var(--paper-on-ink);word-break:break-word}
.footer-contact-note{
  margin-top:.75rem;
  font-size:12px;line-height:1.7;color:rgba(239,233,220,.62);max-width:34ch;
}
.footer-icp{
  margin-top:1rem;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--orange-pale);
}
.footer-base{border-top:1px solid rgba(239,233,220,.16)}
.footer-base-inner{
  width:var(--shell);margin-inline:auto;
  padding:1rem 0 1.4rem;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem;
  font-size:12px;letter-spacing:.06em;color:rgba(239,233,220,.62);
}
.footer-base-meta{color:rgba(239,233,220,.5)}

/* =========================================================
   通用容器与区块
   ========================================================= */
.container{width:var(--shell);margin-inline:auto}
.section{padding:3.5rem 0}
.section + .section{border-top:1px solid var(--rule)}
.section-ink{background:var(--ink);color:var(--paper-on-ink)}
.section-ink h1,.section-ink h2,.section-ink h3,.section-ink h4{color:var(--paper-on-ink)}
.section-ink .lede{color:rgba(239,233,220,.78)}
.section-ink .eyebrow{color:var(--green-pale)}
.section-ink .eyebrow::after{background:rgba(239,233,220,.24)}
.section-ink .section-head{border-bottom-color:rgba(239,233,220,.2)}

.eyebrow{
  display:flex;align-items:center;gap:.6rem;
  font-size:12px;letter-spacing:.16em;color:var(--green);
  margin-bottom:.7rem;
}
.eyebrow::after{content:"";flex:1;height:1px;background:var(--rule)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:1rem;
  border-bottom:1px solid var(--rule);
  padding-bottom:.85rem;margin-bottom:1.6rem;
}
.section-head h2{max-width:22ch}
.lede{font-size:1.02rem;line-height:1.8;color:var(--ink-soft);max-width:60ch}

/* ---------- 栅格 ---------- */
.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:1.25rem}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-12{grid-column:span 12}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.68rem 1.1rem;
  border:1px solid var(--ink);
  font-size:13px;letter-spacing:.1em;
  color:var(--ink);background:transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--orange);border-color:var(--orange);color:#fff}
.btn-primary:hover{background:var(--ink);border-color:var(--ink);color:var(--paper-on-ink)}
.btn-blue{background:var(--blue);border-color:var(--blue);color:#fff}
.btn-blue:hover{background:var(--ink);border-color:var(--ink);color:var(--paper-on-ink)}
.btn-ghost{border-color:var(--rule);color:var(--ink-soft)}
.btn-ghost:hover{border-color:var(--green);color:var(--green);background:rgba(168,199,154,.2)}
.section-ink .btn-ghost{border-color:rgba(239,233,220,.35);color:var(--paper-on-ink)}
.section-ink .btn-ghost:hover{border-color:var(--green-pale);color:var(--green-pale);background:rgba(168,199,154,.14)}

/* ---------- 卡片 ---------- */
.card{
  position:relative;
  background:#fff;
  border:1px solid var(--rule);
  padding:1.1rem 1.2rem 1.25rem;
}
.card-index{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--green);display:block;margin-bottom:.5rem;
}
.card h3{margin-bottom:.4rem}
.card p{font-size:14px;line-height:1.75;color:var(--ink-soft)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;gap:.45rem;
  font-size:12px;letter-spacing:.08em;color:var(--ink-soft);
  padding:.9rem 0;border-bottom:1px solid var(--rule);
}
.breadcrumb li{display:flex;align-items:center;gap:.45rem}
.breadcrumb li + li::before{content:"/";color:var(--rule)}
.breadcrumb a{color:var(--blue)}
.breadcrumb [aria-current="page"]{color:var(--ink)}

/* ---------- 正文 ---------- */
.prose{max-width:68ch;font-size:17px;line-height:1.8;color:var(--ink-soft)}
.prose > * + *{margin-top:1em}
.prose h2{font-size:1.5rem;margin-top:1.8em}
.prose h3{margin-top:1.5em}
.prose ul,.prose ol{list-style:none}
.prose ul li,.prose ol li{position:relative;padding-left:1.15rem}
.prose ul li + li,.prose ol li + li{margin-top:.4rem}
.prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:1px;background:var(--green)}
.prose ol{counter-reset:prose}
.prose ol li{counter-increment:prose}
.prose ol li::before{
  content:counter(prose,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-family:var(--font-mono);font-size:12px;color:var(--green);
}
.prose blockquote{
  border-left:3px solid var(--green);
  padding:.4rem 0 .4rem 1rem;
  font-family:var(--font-serif);color:var(--ink);
}

/* ---------- 表格 ---------- */
.data-table{
  border:1px solid var(--rule);
  font-size:14px;
  background:#fff;
}
.data-table th,.data-table td{
  padding:.6rem .75rem;
  border-bottom:1px solid var(--rule);
  text-align:left;
  vertical-align:top;
}
.data-table thead th{
  background:var(--ink);color:var(--paper-on-ink);
  font-size:12px;letter-spacing:.1em;font-weight:600;
  border-bottom-color:var(--ink);
}
.data-table tbody tr:nth-child(even){background:rgba(168,199,154,.18)}
.data-table td.num,.data-table th.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  border:1px solid var(--rule);
}
.media-frame > img,
.media-frame > svg,
.media-frame > video{
  width:100%;height:100%;object-fit:cover;display:block;
}
.media-frame::after{
  content:"";position:absolute;inset:0;
  box-shadow:inset 0 0 0 1px rgba(20,24,28,.08);
  pointer-events:none;
}
.ratio-16x9{aspect-ratio:16 / 9}
.ratio-4x3{aspect-ratio:4 / 3}
.ratio-3x2{aspect-ratio:3 / 2}
.ratio-1x1{aspect-ratio:1 / 1}
.media-caption{
  margin-top:.5rem;padding-top:.5rem;
  border-top:1px solid var(--rule);
  font-size:12px;letter-spacing:.06em;color:var(--ink-soft);
}
.media-frame .media-badge{
  position:absolute;left:0;top:0;z-index:2;
  padding:.25rem .55rem;
  background:var(--orange);color:#fff;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1100px){
  .footer-inner{grid-template-columns:1.4fr 1fr 1.3fr;row-gap:2rem}
  .footer-col-brand{grid-column:span 3}
}
@media (max-width:1024px){
  .col-4,.col-5,.col-6,.col-7,.col-8{grid-column:span 6}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .brand-sub{display:none}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;
    margin-left:0;
    background:var(--ink);
    border-top:1px solid var(--rule);
    max-height:calc(100vh - 6rem);
    overflow-y:auto;
  }
  .site-nav[data-open="true"]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;padding:.4rem 0 .8rem}
  .nav-list a{
    display:block;width:100%;
    padding:.9rem 1.4rem;
    color:var(--paper-on-ink);
    border-bottom:1px solid rgba(239,233,220,.14);
  }
  .nav-list a:hover{background:rgba(18,104,143,.28);color:#fff;border-bottom-color:rgba(239,233,220,.14)}
  .nav-list a[aria-current="page"]{
    background:var(--green);color:#fff;
    border-bottom-color:var(--green);
  }
  .section{padding:2.6rem 0}
  .footer-inner{grid-template-columns:1fr 1fr;padding:2.4rem 0 1.8rem}
  .footer-col-brand{grid-column:span 2}
}
@media (max-width:700px){
  :root{--shell:min(100% - 1.75rem, 1360px)}
  .grid-12{gap:1rem}
  .col-4,.col-5,.col-6,.col-7,.col-8{grid-column:span 12}
  .footer-inner{grid-template-columns:1fr}
  .footer-col-brand{grid-column:span 1}
  .footer-base-inner{flex-direction:column;align-items:flex-start;gap:.3rem}
  .to-top{right:.75rem;bottom:.75rem}
}

/* =========================================================
   动效降级
   ========================================================= */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .reveal{opacity:1;transform:none;transition:none}
  .skip-link{transition:none}
}