/* ============================================================
   溜溜体育苹果 · 共享样式表 /assets/site.css
   基调：技术蓝图网格 + 纸张叠层 + 印刷标签
   ============================================================ */

/* ---------- 01 变量 ---------- */
:root{
  --ink:#0A1C14;
  --ink-deep:#08170F;
  --ink-2:#123024;
  --turf:#1F6B45;
  --turf-hi:#3E9C63;
  --cyan:#35E0C0;
  --amber:#E0A93B;
  --paper:#F2EFE6;
  --mute:#93A79B;
  --mute-paper:#5C6B62;
  --on-paper:#1A2B22;
  --line:rgba(242,239,230,.14);
  --line-strong:rgba(242,239,230,.30);

  --epl:#3D195B;
  --laliga:#E4572E;
  --seriea:#1A7FD4;
  --bundesliga:#D20515;
  --ligue1:#C8D400;

  --shell:1280px;
  --pad:48px;
  --gap:24px;
  --sec:96px;
  --head-h:72px;
  --head-h-sm:48px;

  --sans:"Noto Sans SC",system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;
  --display:"Barlow Condensed","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shadow-paper:0 1px 0 rgba(242,239,230,.08),0 18px 40px -24px rgba(0,0,0,.7);
  --ease:160ms ease;
}

/* ---------- 02 Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--ink);
  background-image:repeating-linear-gradient(90deg,rgba(242,239,230,.032) 0 1px,transparent 1px 96px);
  color:var(--paper);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg,video{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;padding:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
table{border-collapse:collapse;width:100%;}
[id]{scroll-margin-top:calc(var(--head-h) + 16px);}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;}
::selection{background:var(--turf);color:var(--paper);}

/* ---------- 03 布局骨架 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--pad);
}
.shell--wide{max-width:1440px;}
.section{margin-block:var(--sec);}
.section--tight{margin-block:calc(var(--sec) * .55);}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap);}
.col-3{grid-column:span 3;}
.col-4{grid-column:span 4;}
.col-6{grid-column:span 6;}
.col-8{grid-column:span 8;}
.col-9{grid-column:span 9;}
.col-12{grid-column:span 12;}

/* ---------- 04 跳转与进度 ---------- */
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  padding:.6rem 1rem;
  background:var(--amber);color:var(--on-paper);
  font-size:.85rem;font-weight:700;
}
.skip-link:focus{left:12px;top:12px;}

/* ---------- 05 命令栏页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--ink);
  border-bottom:1px solid var(--line);
}
.progress-rail{
  position:absolute;left:0;right:0;top:0;height:2px;
  background:rgba(242,239,230,.08);
}
.progress-bar{display:block;height:100%;width:0;background:var(--turf-hi);}
.header-shell{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  min-height:var(--head-h);
  transition:min-height .24s ease;
}
.site-header[data-condensed] .header-shell{min-height:var(--head-h-sm);}

.brand{display:flex;align-items:center;gap:.7rem;padding-block:.4rem;}
.brand-seal{
  position:relative;flex:none;
  width:44px;height:44px;
  display:grid;place-items:center;
  padding-left:5px;
  border:1px solid var(--line-strong);
  background:#0d2419;
  overflow:hidden;
  transition:width .24s ease,height .24s ease;
}
.site-header[data-condensed] .brand-seal{width:34px;height:34px;}
.seal-bands{position:absolute;inset:0 auto 0 0;width:5px;display:flex;flex-direction:column;}
.seal-band{display:block;flex:1 1 auto;}
.seal-code{
  font-family:var(--mono);font-size:.64rem;letter-spacing:.06em;
  color:var(--paper);line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{
  font-family:var(--display);
  font-weight:800;
  font-size:1.06rem;
  letter-spacing:.05em;
}
.brand-tag{font-size:.68rem;color:var(--mute);letter-spacing:.02em;white-space:nowrap;}
.site-header[data-condensed] .brand-tag{opacity:0;height:0;overflow:hidden;}

.band-epl{background:var(--epl);}
.band-laliga{background:var(--laliga);}
.band-seriea{background:var(--seriea);}
.band-bundesliga{background:var(--bundesliga);}
.band-ligue1{background:var(--ligue1);}

.site-nav{min-width:0;}
.nav-list{display:flex;align-items:stretch;justify-content:center;flex-wrap:nowrap;gap:2px;}
.nav-link{
  display:inline-flex;align-items:baseline;gap:.4rem;
  padding:.7rem .72rem;
  font-size:.9rem;
  color:var(--mute);
  border-bottom:2px solid transparent;
  white-space:nowrap;
  transition:color var(--ease),border-color var(--ease),background-color var(--ease);
}
.nav-link:hover{color:var(--paper);background:var(--ink-2);}
.nav-link[aria-current="page"]{
  color:var(--paper);
  background:var(--ink-2);
  border-bottom-color:var(--turf-hi);
}
.nav-idx{font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;color:var(--cyan);}
.nav-link[aria-current="page"] .nav-idx{color:var(--amber);}

.header-utility{display:flex;align-items:center;gap:.5rem;}
.util-link{
  display:inline-flex;align-items:center;
  padding:.4rem .6rem;
  border:1px solid var(--line);
  font-size:.8rem;color:var(--mute);
  transition:color var(--ease),border-color var(--ease);
}
.util-link:hover{color:var(--amber);border-color:var(--amber);}
.to-top{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;
  border:1px solid var(--line);
  font-family:var(--mono);font-size:.85rem;color:var(--mute);
  opacity:0;visibility:hidden;
  transition:opacity .2s ease,color var(--ease),border-color var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;}
.to-top:hover{color:var(--turf-hi);border-color:var(--turf-hi);}
.nav-toggle{
  display:none;align-items:center;gap:.5rem;
  padding:.45rem .6rem;
  border:1px solid var(--line-strong);
  font-size:.8rem;color:var(--paper);
}
.nav-toggle-bars{display:flex;flex-direction:column;gap:3px;width:16px;}
.nav-toggle-bars i{display:block;height:1.5px;background:currentColor;transition:transform .18s ease,opacity .18s ease;}
.site-header[data-open] .nav-toggle-bars i:nth-child(1){transform:translateY(4.5px) rotate(45deg);}
.site-header[data-open] .nav-toggle-bars i:nth-child(2){opacity:0;}
.site-header[data-open] .nav-toggle-bars i:nth-child(3){transform:translateY(-4.5px) rotate(-45deg);}
.nav-toggle-text{letter-spacing:.06em;}

/* ---------- 06 页脚 ---------- */
.site-footer{
  background:var(--ink-deep);
  border-top:1px solid var(--line);
  margin-top:var(--sec);
}
.footer-rail{display:grid;grid-template-columns:repeat(5,1fr);height:6px;}
.rail-band{display:block;}
.footer-shell{padding-block:64px 28px;}
.footer-top{
  display:grid;
  grid-template-columns:minmax(220px,290px) minmax(0,1fr);
  gap:clamp(24px,4vw,64px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:.75rem;}
.footer-mark{width:56px;height:56px;}
.footer-mark .seal-code{font-size:.68rem;}
.footer-name{
  font-family:var(--display);
  font-weight:800;font-size:1.35rem;letter-spacing:.04em;
}
.footer-tag{font-size:.8rem;color:var(--mute);max-width:32ch;}
.footer-cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.footer-col-title{
  font-size:.78rem;font-weight:700;letter-spacing:.14em;
  color:var(--mute);
  padding-bottom:.5rem;margin-bottom:.75rem;
  border-bottom:1px solid var(--line);
}
.footer-links{display:flex;flex-direction:column;gap:.35rem;}
.footer-link{
  font-size:.9rem;opacity:.88;
  border-bottom:1px solid transparent;
  transition:color var(--ease),opacity var(--ease),border-color var(--ease);
}
.footer-link:hover{color:var(--turf-hi);opacity:1;border-bottom-color:var(--turf-hi);}
.footer-contact{
  margin-top:48px;padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:baseline;gap:.5rem 1.6rem;
}
.footer-contact-line{
  font-size:.84rem;color:var(--mute);max-width:100ch;margin:0;
}
.contact-key{
  font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;
  color:var(--turf-hi);margin-right:.5rem;
}
.copy-mail{
  font-family:var(--mono);font-size:.74rem;letter-spacing:.04em;
  color:var(--amber);
  border:1px solid var(--line-strong);
  padding:.32rem .62rem;
  transition:border-color var(--ease),background-color var(--ease),color var(--ease);
}
.copy-mail:hover{border-color:var(--amber);background:rgba(224,169,59,.08);}
.footer-bottom{
  margin-top:20px;padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:.5rem 1.5rem;
  font-size:.78rem;color:var(--mute);
}
.footer-legal{max-width:78ch;margin:0;}
.footer-icp{font-family:var(--mono);letter-spacing:.04em;margin:0;}

/* ---------- 07 区块抬头与正文 ---------- */
.sec-head{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gap);
  align-items:end;
  padding-bottom:1rem;
  margin-bottom:2rem;
  border-bottom:1px solid var(--line);
}
.sec-idx{grid-column:1 / span 2;font-family:var(--mono);font-size:.78rem;letter-spacing:.12em;color:var(--cyan);}
.sec-title{
  grid-column:3 / span 7;
  font-family:var(--display);
  font-weight:800;
  font-size:clamp(1.6rem,3.2vw,2.4rem);
  line-height:1.2;
  letter-spacing:-.01em;
  padding-left:14px;
  border-left:3px solid var(--turf);
}
.sec-sub{grid-column:10 / span 3;font-size:.82rem;color:var(--mute);}
.hud{
  display:inline-flex;align-items:center;gap:.4rem;
  font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;
  color:var(--mute);
}
.lede{font-size:clamp(1rem,1.5vw,1.15rem);max-width:68ch;opacity:.94;}
.prose{max-width:68ch;}
.prose p{margin-bottom:1.1em;}
.prose h3{
  font-size:1.25rem;font-weight:700;line-height:1.5;
  padding-left:12px;margin:1.8em 0 .7em;
  border-left:3px solid var(--turf);
}
.prose a{border-bottom:1px solid var(--turf-hi);}
.prose a:hover{color:var(--turf-hi);}

/* ---------- 08 纸张叠层与卡片 ---------- */
.paper{
  position:relative;
  background:var(--ink-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow-paper);
  padding:1.5rem 1.6rem;
}
.paper::after{
  content:"";position:absolute;
  inset:8px -8px -8px 8px;
  border:1px solid rgba(242,239,230,.07);
  z-index:-1;pointer-events:none;
}
.paper--light{
  background:var(--paper);
  color:var(--on-paper);
  border-color:rgba(10,28,20,.22);
}
.paper--light .footnote{color:var(--mute-paper);}
.paper--light .sec-sub,
.paper--light .hud{color:var(--mute-paper);}

.card{
  position:relative;
  background:var(--ink-2);
  border:1px solid var(--line);
  padding:1.5rem 1.4rem 1.4rem;
}
.card-top-band{
  position:absolute;left:-1px;right:-1px;top:-1px;height:4px;
  background:var(--league,var(--turf));
}
.is-epl{--league:var(--epl);}
.is-laliga{--league:var(--laliga);}
.is-seriea{--league:var(--seriea);}
.is-bundesliga{--league:var(--bundesliga);}
.is-ligue1{--league:var(--ligue1);}

.badge-league{
  display:inline-flex;align-items:center;gap:.4rem;
  font-size:.72rem;letter-spacing:.06em;color:var(--paper);
}
.badge-league::before{
  content:"";display:block;width:10px;height:10px;
  background:var(--league,var(--turf));
}
.tag{
  display:inline-block;
  padding:.15rem .45rem;
  border:1px solid var(--line-strong);
  font-size:.72rem;letter-spacing:.05em;color:var(--mute);
  transform:rotate(-.8deg);
}
.tag--amber{border-color:var(--amber);color:var(--amber);}
.stamp{
  display:inline-block;
  padding:.2rem .5rem;
  border:1px dashed var(--amber);
  font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;
  color:var(--amber);
  transform:rotate(-1deg);
}
.data-num{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  color:var(--cyan);
}
.footnote{
  font-size:.8125rem;font-style:italic;line-height:1.7;
  color:var(--mute);
}
.footnote::before{
  content:"依据";
  font-style:normal;font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;
  color:var(--amber);
  border:1px solid var(--amber);
  padding:0 .28rem;
  margin-right:.45rem;
}
.hairline{height:1px;background:var(--line);border:0;margin:0;}
.divider{height:1px;border:0;margin-block:2rem;background:linear-gradient(90deg,var(--turf),transparent);}
.band{display:block;height:6px;background:var(--league,var(--turf));}
.axis-num{font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;color:var(--mute);}
.vol-label{
  writing-mode:vertical-rl;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.4em;
  color:var(--mute);
  padding-left:.55rem;
  border-left:3px solid var(--league,var(--turf));
}

/* ---------- 09 数值块与明细表 ---------- */
.stat{
  display:flex;flex-direction:column;gap:.15rem;
  padding:.9rem 1rem;
  background:var(--ink-2);
  border:1px solid var(--line);
  border-top:4px solid var(--league,var(--turf));
}
.stat-num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:1.6rem;line-height:1.1;color:var(--cyan);
}
.stat-label{font-size:.76rem;letter-spacing:.04em;color:var(--mute);}
.ledger{border:1px solid var(--line);background:var(--ink-2);}
.ledger-row{
  display:grid;
  grid-template-columns:88px minmax(0,1fr) minmax(0,1fr) 96px;
  gap:12px;align-items:center;
  padding:.7rem 1rem;
  border-bottom:1px solid var(--line);
}
.ledger-row:last-child{border-bottom:0;}
.ledger-row:nth-child(even){background:rgba(242,239,230,.025);}
.ledger-cell{font-size:.9rem;}
.ledger-cell--num{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--cyan);}

/* ---------- 10 时间轴 ---------- */
.timeline{position:relative;padding-left:28px;border-left:1px solid var(--line);}
.timeline-item{position:relative;padding-bottom:2.2rem;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-node{
  position:absolute;left:-35px;top:.6rem;
  width:11px;height:11px;
  background:var(--ink);
  border:1px solid var(--turf-hi);
  transition:background-color .24s ease,box-shadow .24s ease;
}
.timeline-item.is-in .timeline-node{
  background:var(--turf-hi);
  box-shadow:0 0 0 4px rgba(62,156,99,.18);
}
.timeline-meta{font-family:var(--mono);font-size:.75rem;letter-spacing:.06em;color:var(--mute);margin-bottom:.3rem;}
.timeline-body{max-width:68ch;}

/* ---------- 11 筛选与章节目录 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;}
.chip{
  display:inline-flex;align-items:center;
  padding:.34rem .7rem;
  border:1px solid var(--line-strong);
  font-size:.78rem;letter-spacing:.04em;color:var(--mute);
  transition:color var(--ease),border-color var(--ease),background-color var(--ease);
}
.chip::before{
  content:"";display:block;width:8px;height:8px;margin-right:.4rem;
  background:var(--league,var(--mute));
}
.chip--all::before{display:none;}
.chip:hover{color:var(--paper);border-color:var(--turf-hi);}
.chip[aria-pressed="true"]{background:var(--amber);border-color:var(--amber);color:var(--on-paper);}
.filter-status{font-family:var(--mono);font-size:.74rem;letter-spacing:.06em;color:var(--mute);}
.chapter-nav{display:flex;flex-wrap:wrap;gap:.35rem 1.1rem;font-size:.82rem;}
.chapter-nav-link{
  color:var(--mute);
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  transition:color var(--ease),border-color var(--ease);
}
.chapter-nav-link:hover{color:var(--paper);}
.chapter-nav-link[aria-current="true"]{color:var(--paper);border-bottom-color:var(--turf-hi);}

/* ---------- 12 按钮与面包屑 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.7rem 1.1rem;
  border:1px solid var(--line-strong);
  font-size:.875rem;font-weight:600;letter-spacing:.03em;
  color:var(--paper);
  transition:color var(--ease),border-color var(--ease),background-color var(--ease);
}
.btn:hover{border-color:var(--turf-hi);background:rgba(62,156,99,.12);}
.btn--amber{border-color:var(--amber);color:var(--amber);}
.btn--amber:hover{background:var(--amber);color:var(--on-paper);}
.btn--solid{border-color:var(--turf);background:var(--turf);color:var(--paper);}
.btn--solid:hover{background:var(--turf-hi);border-color:var(--turf-hi);}
.btn--ghost{border-color:var(--line);color:var(--mute);}
.btn--ghost:hover{color:var(--paper);border-color:var(--line-strong);background:transparent;}

.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;
  font-family:var(--mono);font-size:.76rem;letter-spacing:.04em;
  color:var(--mute);
}
.breadcrumbs li:not(:last-child)::after{content:"/";margin-inline:.6rem;opacity:.5;}
.breadcrumbs a{color:var(--mute);}
.breadcrumbs a:hover{color:var(--paper);}
.breadcrumbs [aria-current="page"]{color:var(--paper);}

/* ---------- 13 图片容器（页面阶段放 img） ---------- */
.media{
  position:relative;overflow:hidden;
  background:var(--ink-2);
  border:1px solid var(--line);
}
.media--4x3{aspect-ratio:4 / 3;}
.media--16x9{aspect-ratio:16 / 9;}
.media--1x1{aspect-ratio:1 / 1;}
.media--ph{
  background-image:repeating-linear-gradient(135deg,var(--ink-2) 0 12px,#0F2A1E 12px 24px);
}
.media img{
  width:100%;height:100%;
  object-fit:cover;
  filter:saturate(.8) contrast(1.08) brightness(.9);
}
.media--plate::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(53,224,192,.16) 1px,transparent 1px),
    linear-gradient(90deg,rgba(53,224,192,.16) 1px,transparent 1px);
  background-size:32px 32px;
}
.media--plate::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:6px;z-index:1;
  background:var(--league,var(--turf));
}
.media-caption{
  margin-top:.6rem;
  font-size:.78rem;font-style:italic;color:var(--mute);
}

/* ---------- 14 入场动效 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(12px);
  transition:opacity .24s ease-out,transform .24s ease-out;
}
[data-reveal].is-in{opacity:1;transform:none;}
.stagger-item{
  opacity:0;transform:translateY(12px);
  transition:opacity .24s ease-out,transform .24s ease-out;
}
.stagger-item.is-in{opacity:1;transform:none;}

/* ---------- 15 响应式 ---------- */
@media (max-width:1300px){
  .nav-link{padding:.65rem .5rem;font-size:.86rem;}
}
@media (max-width:1080px){
  :root{--pad:24px;}
  .brand-tag{display:none;}
  .util-link{display:none;}
  .nav-toggle{display:inline-flex;}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;
    background:var(--ink-2);
    border-bottom:1px solid var(--line-strong);
    max-height:calc(100vh - var(--head-h));
    overflow-y:auto;
  }
  .site-header[data-open] .site-nav{display:block;}
  .nav-list{flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;}
  .nav-link{
    width:100%;justify-content:flex-start;
    padding:.9rem var(--pad);
    border-bottom:1px solid var(--line);
    border-left:3px solid transparent;
    font-size:.95rem;
  }
  .nav-link[aria-current="page"]{
    border-bottom-color:var(--line);
    border-left-color:var(--turf-hi);
    background:rgba(31,107,69,.18);
  }
  .site-header[data-condensed] .brand-tag{display:none;}
}
@media (max-width:900px){
  :root{--sec:56px;--gap:16px;}
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));}
  .col-3,.col-4,.col-6,.col-8,.col-9{grid-column:1 / -1;}
  .sec-head{grid-template-columns:1fr;gap:.5rem;align-items:start;}
  .sec-idx,.sec-title,.sec-sub{grid-column:auto;}
  .footer-top{grid-template-columns:1fr;}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 20px;}
  .ledger-row{grid-template-columns:64px minmax(0,1fr) 88px;}
  .ledger-row .ledger-cell:nth-child(3){display:none;}
}
@media (max-width:560px){
  :root{--pad:18px;}
  body{font-size:16px;}
  .footer-cols{grid-template-columns:1fr;}
  .footer-shell{padding-block:48px 24px;}
  .brand-name{font-size:.98rem;}
  .footer-contact{margin-top:32px;}
}

/* ---------- 16 可访问性偏好 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  [data-reveal],.stagger-item{opacity:1 !important;transform:none !important;}
  .progress-bar{transition:none !important;}
}