/* =====================================================================
   爱游戏体育 · 看台档案室  /assets/site.css
   共享层：reset / 设计令牌 / 中文排版 / 头部 / 页脚 /
   通用按钮 / 面包屑 / 正文容器 / 网格 / 基础组件
   ===================================================================== */

/* ---------- 1. 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,dt,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video,picture{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid #35E0B0;outline-offset:2px}

/* ---------- 2. 设计令牌 ---------- */
:root{
  --abyss:#040F0C;
  --night:#071A15;
  --grass:#0E3A2C;
  --panel:#14493A;
  --cyan:#35E0B0;
  --blue:#3B9BFF;
  --orange:#FF7A2F;
  --amber:#FFC857;
  --fog:#F1F6F2;
  --sage:#9FB8AE;

  --line:rgba(159,184,174,.22);
  --line-soft:rgba(159,184,174,.13);
  --line-cyan:rgba(53,224,176,.45);
  --grid-line:rgba(159,184,174,.06);

  --font-display:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Songti SC","Source Han Serif SC","Noto Serif SC",Georgia,"SimSun",serif;
  --font-mono:ui-monospace,"JetBrains Mono","IBM Plex Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;

  --shell-w:1280px;
  --gutter:clamp(16px,3.4vw,44px);
  --ease:cubic-bezier(.22,.61,.36,1);
  --tilt:skewX(-6deg);
}

/* ---------- 3. 中文排版基底 ---------- */
body{
  min-height:100vh;
  background-color:var(--night);
  background-image:
    radial-gradient(120% 52% at 50% -8%, rgba(20,73,58,.78), rgba(7,26,21,0) 72%),
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size:auto, 100% 76px, 76px 100%;
  background-repeat:no-repeat, repeat, repeat;
  color:var(--fog);
  font-family:var(--font-display);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{font-weight:900;line-height:1.16;letter-spacing:-.005em}
strong,b{font-weight:700;color:var(--fog)}
::selection{background:rgba(53,224,176,.28);color:#fff}

.display{
  font-size:clamp(2.4rem,6vw,5.5rem);
  font-weight:900;
  line-height:1.02;
  letter-spacing:-.02em;
  transform:var(--tilt);
  transform-origin:left center;
}
.label{
  display:block;
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--sage);
}
.serif{font-family:var(--font-serif);font-weight:500}
.mono{font-family:var(--font-mono)}

/* ---------- 4. 布局骨架 ---------- */
.shell{
  width:100%;
  max-width:var(--shell-w);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:clamp(14px,1.8vw,26px);
}
.page{
  padding-block:clamp(26px,3.6vw,52px) clamp(60px,9vw,120px);
}
.page-head{
  display:grid;
  gap:14px;
  padding-bottom:clamp(18px,2.4vw,30px);
  border-bottom:1px solid var(--line);
  margin-bottom:clamp(26px,3.4vw,48px);
}
.page-head__title{
  font-size:clamp(1.9rem,4vw,3rem);
  font-weight:900;
  transform:var(--tilt);
  transform-origin:left center;
}
.page-head__lead{
  font-family:var(--font-serif);
  font-size:clamp(1rem,1.5vw,1.15rem);
  line-height:1.8;
  color:var(--sage);
  max-width:60ch;
}

/* ---------- 5. 正文容器 ---------- */
.prose{
  max-width:68ch;
  font-size:1.02rem;
  line-height:1.85;
  color:var(--fog);
}
.prose p+p{margin-top:1.05em}
.prose h2{font-size:clamp(1.4rem,2.4vw,2rem);margin:2em 0 .7em}
.prose h3{font-size:1.14rem;margin:1.7em 0 .5em;color:var(--cyan)}
.prose ul,.prose ol{margin:1em 0;padding-left:1.4em;list-style:disc}
.prose ol{list-style:decimal}
.prose li+li{margin-top:.45em}
.prose a{color:var(--blue);border-bottom:1px solid rgba(59,155,255,.45)}
.prose a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.prose blockquote{
  margin:1.6em 0;
  padding:14px 0 14px 20px;
  border-left:2px solid var(--cyan);
  font-family:var(--font-serif);
  color:var(--sage);
}
.prose code{
  font-family:var(--font-mono);
  font-size:.9em;
  background:rgba(20,73,58,.7);
  border:1px solid var(--line-soft);
  padding:1px 6px;
}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.7em 1.15em;
  border:1px solid var(--line-cyan);
  background:transparent;
  color:var(--fog);
  font-size:.9rem;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.2;
  cursor:pointer;
  transition:background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), filter .2s var(--ease);
}
.btn:hover{filter:brightness(1.12)}
.btn--primary{
  background:var(--orange);
  border-color:var(--orange);
  color:var(--abyss);
}
.btn--primary:hover{background:#ff8f4d;border-color:#ff8f4d;filter:none}
.btn--ghost{
  border-color:var(--line-cyan);
  color:var(--cyan);
}
.btn--ghost:hover{background:rgba(53,224,176,.12);border-color:var(--cyan);filter:none}
.btn--quiet{
  padding:.42em .8em;
  border-color:var(--line);
  color:var(--sage);
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.12em;
  text-transform:uppercase;
}
.btn--quiet:hover{color:var(--cyan);border-color:var(--line-cyan);filter:none}

/* ---------- 7. 徽章 / 指标 / 面板 ---------- */
.chip{
  display:inline-block;
  padding:3px 9px;
  border:1px solid var(--line);
  color:var(--sage);
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  white-space:nowrap;
}
.chip--amber{color:var(--amber);border-color:rgba(255,200,87,.5)}
.chip--orange{color:var(--orange);border-color:rgba(255,122,47,.5)}
.chip--cyan{color:var(--cyan);border-color:var(--line-cyan)}

.panel{
  background:var(--panel);
  border:1px solid var(--line);
  padding:clamp(16px,2vw,24px);
}
.panel__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:10px;
  padding-bottom:12px;
  margin-bottom:14px;
  border-bottom:1px solid var(--line);
}
.panel__title{font-size:1.05rem;font-weight:900}

.metric{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:14px 16px;
  background:var(--panel);
  border:1px solid var(--line);
}
.metric__value{
  font-family:var(--font-mono);
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  line-height:1.05;
  color:var(--cyan);
}
.metric__label{
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--sage);
}
.metric--alert .metric__value{color:var(--orange)}

/* ---------- 8. 图片容器（供页面阶段放置图片） ---------- */
.media{
  position:relative;
  overflow:hidden;
  background:var(--grass);
  border:1px solid var(--line);
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(53,224,176,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(53,224,176,.07) 1px, transparent 1px);
  background-size:36px 36px;
  pointer-events:none;
}
.media img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:16/9;
}
.media--wide img{aspect-ratio:21/9}
.media--tall img{aspect-ratio:3/4}
.media--square img{aspect-ratio:1/1}
.media__cap{
  display:block;
  padding:10px 14px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.1em;
  color:var(--sage);
  background:var(--abyss);
}

/* ---------- 9. 章节侧栏 ---------- */
.chapter-nav{display:flex;flex-direction:column;gap:2px}
.chapter-nav__link{
  display:block;
  padding:7px 0 7px 12px;
  border-left:1px solid var(--line);
  color:var(--sage);
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.1em;
  transition:color .2s var(--ease), border-color .2s var(--ease);
}
.chapter-nav__link:hover{color:var(--fog)}
.chapter-nav__link[aria-current="true"]{color:var(--cyan);border-left-color:var(--cyan)}
.chapter-nav__num{color:var(--blue);margin-right:8px}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.1em;
  margin-bottom:18px;
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:var(--sage);opacity:.6}
.breadcrumb a{color:var(--sage)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb [aria-current="page"]{color:var(--fog)}

/* ---------- 11. 显现 ---------- */
.has-js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .32s var(--ease), transform .32s var(--ease);
}
.has-js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 12. 跳至主要内容 ---------- */
.skip-link{
  position:fixed;
  top:-120px;
  left:16px;
  z-index:200;
  padding:10px 18px;
  background:var(--cyan);
  color:var(--abyss);
  font-size:.85rem;
  font-weight:700;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:14px}

/* ---------- 13. 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  --mast-pad:26px;
  --brand-size:clamp(1.9rem,3.5vw,2.9rem);
  background:linear-gradient(180deg, rgba(4,15,12,.97), rgba(7,26,21,.94));
  border-bottom:1px solid var(--line);
  color:var(--fog);
}

.header-rail{
  max-height:72px;
  overflow:hidden;
  background:rgba(4,15,12,.9);
  border-bottom:1px solid var(--line-soft);
  opacity:1;
  transition:max-height .32s var(--ease), opacity .22s var(--ease), border-color .32s var(--ease);
}
.header-rail__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:34px;
}
.header-rail__tagline{
  font-family:var(--font-serif);
  font-size:.86rem;
  line-height:1.4;
  color:var(--sage);
}
.header-rail__links{display:flex;flex-wrap:wrap;gap:18px}
.header-rail__links a{
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--sage);
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease), border-color .2s var(--ease);
}
.header-rail__links a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

.masthead{padding-block:var(--mast-pad);transition:padding .3s var(--ease)}
.masthead__inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:18px;
}
.masthead__aside{
  justify-self:start;
  display:flex;
  flex-direction:column;
  gap:5px;
  transition:opacity .2s var(--ease), visibility .2s var(--ease);
}
.masthead__brand{justify-self:center;min-width:0}
.masthead__actions{
  justify-self:end;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:flex-end;
  gap:10px;
}

.brand{display:inline-flex;align-items:center;gap:.6em;color:var(--fog)}
.brand__mark{
  flex:0 0 auto;
  width:26px;
  height:26px;
  background:linear-gradient(165deg,var(--cyan),var(--blue) 62%,var(--orange));
  clip-path:polygon(0% 100%, 14% 42%, 36% 42%, 50% 0%, 64% 42%, 86% 42%, 100% 100%);
}
.brand__text{display:flex;flex-direction:column;align-items:flex-start}
.brand__name{
  display:inline-block;
  font-size:var(--brand-size);
  font-weight:900;
  line-height:1;
  letter-spacing:.02em;
  transform:var(--tilt);
  transform-origin:left center;
  transition:font-size .3s var(--ease);
}
.brand__sub{
  display:block;
  max-height:20px;
  overflow:hidden;
  margin-top:.4em;
  font-family:var(--font-mono);
  font-size:.62rem;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
  transition:max-height .3s var(--ease), opacity .2s var(--ease), margin-top .3s var(--ease);
}

.nav-bar{
  background:rgba(7,26,21,.88);
  border-top:1px solid var(--line);
}
.nav-bar__inner{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  min-height:54px;
}
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:9px 13px;
  border:1px solid var(--line);
  color:var(--fog);
  font-size:.8rem;
  font-weight:700;
  letter-spacing:.14em;
  transition:border-color .2s var(--ease), color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-cyan);color:var(--cyan)}
.nav-toggle__bars{position:relative;display:block;width:18px;height:12px}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:2px;
  background:var(--cyan);
  transition:transform .25s var(--ease), top .25s var(--ease);
}
.nav-toggle__bars::before{top:1px}
.nav-toggle__bars::after{top:9px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:5px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:5px;transform:rotate(-45deg)}

.primary-nav{flex:1 1 auto;display:flex;justify-content:center}
.primary-nav__list{display:flex;align-items:center;gap:clamp(10px,2.4vw,34px)}
.primary-nav__list a{
  display:inline-block;
  padding:15px 4px;
  border-bottom:2px solid transparent;
  color:var(--sage);
  font-size:.95rem;
  font-weight:700;
  letter-spacing:.06em;
  transition:color .2s var(--ease), border-color .2s var(--ease);
}
.primary-nav__list a:hover{color:var(--fog);border-bottom-color:var(--blue)}
.primary-nav__list a[aria-current="page"]{color:var(--cyan);border-bottom-color:var(--cyan)}

.read-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:rgba(159,184,174,.14);
  overflow:hidden;
}
.read-progress__bar{
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--blue),var(--cyan) 55%,var(--amber));
}

/* 滚动收窄态 */
.site-header.is-condensed{--mast-pad:9px;--brand-size:1.3rem}
.site-header.is-condensed .header-rail{max-height:0;opacity:0;border-color:transparent}
.site-header.is-condensed .masthead__aside{opacity:0;visibility:hidden}
.site-header.is-condensed .masthead__actions .btn{padding:.5em .9em;font-size:.8rem}

/* ---------- 14. 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--abyss);
  border-top:1px solid var(--line);
  color:var(--sage);
}
.site-footer::before{
  content:"";
  display:block;
  height:6px;
  background:repeating-linear-gradient(90deg, var(--cyan) 0 22px, transparent 22px 46px);
  opacity:.5;
}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:clamp(24px,3vw,44px) clamp(16px,2.4vw,32px);
  padding-block:clamp(34px,5vw,68px) clamp(24px,3vw,40px);
}
.footer-brand{grid-column:span 4;min-width:0}
.footer-nav{
  grid-column:span 5;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.footer-contact{grid-column:span 3;min-width:0}

.brand--footer{margin-bottom:14px}
.brand--footer .brand__name{font-size:1.5rem}
.brand--footer .brand__sub{color:var(--sage);letter-spacing:.2em}
.footer-brand__tagline{
  font-family:var(--font-serif);
  font-size:1rem;
  line-height:1.75;
  color:var(--fog);
}
.footer-brand__note{font-size:.8rem;line-height:1.75;margin-top:10px;color:var(--sage)}

.footer-col__title{
  padding-bottom:9px;
  margin-bottom:14px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:.7rem;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-list li+li{margin-top:10px}
.footer-list a{
  font-size:.92rem;
  color:var(--sage);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease), border-color .2s var(--ease);
}
.footer-list a:hover{color:var(--fog);border-bottom-color:var(--blue)}

.footer-contact__row{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:10px;
  padding:9px 0;
  border-bottom:1px solid var(--line-soft);
}
.footer-contact__key{
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--sage);
}
.footer-contact__value{
  font-family:var(--font-mono);
  font-size:.82rem;
  line-height:1.5;
  color:var(--fog);
  word-break:break-all;
}
.footer-contact__note{font-size:.78rem;line-height:1.75;margin-top:12px;color:var(--sage)}

.copy-btn{
  padding:3px 8px;
  border:1px solid var(--line);
  color:var(--sage);
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  white-space:nowrap;
  transition:color .2s var(--ease), border-color .2s var(--ease);
}
.copy-btn:hover{color:var(--cyan);border-color:var(--line-cyan)}
.copy-btn[data-copied="true"]{color:var(--amber);border-color:var(--amber)}
.copy-btn[data-copied="false"]{color:var(--orange);border-color:var(--orange)}

.footer-legal{border-top:1px solid var(--line-soft)}
.footer-legal__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding-block:16px 20px;
  font-size:.78rem;
}
.footer-legal__copy{color:var(--sage)}
.footer-legal__links{display:flex;flex-wrap:wrap;gap:16px}
.footer-legal__links a{color:var(--sage);border-bottom:1px solid transparent;transition:color .2s var(--ease), border-color .2s var(--ease)}
.footer-legal__links a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer-legal__icp{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.06em;color:var(--sage)}

/* ---------- 15. 响应式 ---------- */
@media (max-width:1024px){
  .footer-grid{grid-template-columns:repeat(6,1fr)}
  .footer-brand{grid-column:span 6}
  .footer-nav{grid-column:span 6}
  .footer-contact{grid-column:span 6}
  .grid{grid-template-columns:repeat(6,1fr)}
}

@media (max-width:900px){
  body{font-size:16px}
  .masthead__inner{grid-template-columns:minmax(0,1fr) auto;gap:12px}
  .masthead__aside{display:none}
  .masthead__brand{justify-self:start}
  .masthead__actions{justify-self:end}

  .nav-toggle{display:inline-flex}
  .primary-nav{
    flex-basis:100%;
    display:none;
    padding-block:6px 12px;
    border-top:1px solid var(--line);
    margin-top:4px;
  }
  .primary-nav[data-open="true"]{display:block;animation:navDrawer .3s var(--ease) both}
  .primary-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .primary-nav__list a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:14px 2px;
    border-bottom:1px solid var(--line-soft);
    letter-spacing:.1em;
  }
  .primary-nav__list a:hover{border-bottom-color:var(--blue)}
  .primary-nav__list a[aria-current="page"]{border-bottom-color:var(--cyan)}
  html:not(.has-js) .primary-nav{display:block}
}

@media (max-width:760px){
  .header-rail__inner{justify-content:center}
  .header-rail__tagline{display:none}
  .masthead__actions .btn--ghost{display:none}
  .site-header.is-condensed .masthead__actions .btn--ghost{display:none}
}

@media (max-width:620px){
  .brand__mark{width:22px;height:22px}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid{grid-template-columns:repeat(2,1fr)}
  .footer-legal__inner{flex-direction:column;align-items:flex-start}
  .page-head__title{transform:none}
}

@keyframes navDrawer{
  from{opacity:0;transform:translateY(-10px)}
  to{opacity:1;transform:none}
}

/* ---------- 16. 可访问性与降级 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .has-js [data-reveal]{opacity:1;transform:none}
  .primary-nav[data-open="true"]{animation:none}
}