/* =========================================================
   华体会赛事 · 共享站点套件  /assets/site.css
   视觉基调：深夜赛场指挥台
   深墨绿基底 · 荧光青交互 · 琥珀金索引 · 珊瑚红提示
   ========================================================= */

/* ---------- 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,figure,blockquote,dl,dd,address{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:var(--cyan)}
:focus-visible{outline:3px solid var(--amber);outline-offset:3px}

/* ---------- 2. Tokens ---------- */
:root{
  --ink-900:#06120F;
  --ink-850:#091A15;
  --ink-800:#0B1F1A;
  --ink-700:#12332B;
  --cyan:#35F2D0;
  --cyan-soft:rgba(53,242,208,.14);
  --amber:#F2B544;
  --coral:#FF6B5A;
  --stone:#6F7D78;
  --moss:#5C7A5E;
  --clay:#B86B4B;
  --paper:#F2E9D8;
  --line:rgba(242,233,216,.13);
  --line-soft:rgba(242,233,216,.09);
  --line-strong:rgba(53,242,208,.30);
  --shadow-hard:6px 6px 0 rgba(6,18,15,.85);
  --shadow-soft:0 16px 34px rgba(0,0,0,.38);
  --radius:2px;
  --wrap:1320px;
  --gutter:clamp(16px,4vw,40px);
  --font-display:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-body:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}

/* ---------- 3. Base typography ---------- */
body{
  min-height:100vh;
  background-color:var(--ink-800);
  background-image:
    linear-gradient(rgba(53,242,208,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(53,242,208,.05) 1px,transparent 1px);
  background-size:72px 72px,72px 72px;
  color:rgba(242,233,216,.86);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.12;letter-spacing:-.02em;color:var(--paper);text-wrap:balance}
h1{font-size:clamp(2rem,6vw,3.6rem)}
h2{font-size:clamp(1.6rem,4vw,2.6rem)}
h3{font-size:clamp(1.2rem,2.4vw,1.6rem);letter-spacing:-.01em}
h4{font-size:clamp(1.05rem,1.8vw,1.2rem)}
p{text-wrap:pretty}
strong{color:var(--paper);font-weight:800}
::selection{background:var(--cyan);color:var(--ink-900)}
#main-content{display:block;scroll-margin-top:132px}

/* ---------- 4. Utilities ---------- */
.container{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.mono{font-family:var(--font-mono);letter-spacing:.06em}
.numeral{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.22em;color:var(--amber)}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--amber)}
.stack > * + *{margin-top:clamp(14px,2vw,22px)}
.grid-auto{display:grid;gap:clamp(16px,2.4vw,26px);grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}
.skip-link{
  position:fixed;top:8px;left:8px;z-index:300;
  transform:translateY(-260%);
  padding:12px 18px;
  background:var(--cyan);color:var(--ink-900);
  font-weight:800;font-size:14px;text-decoration:none;
  border:2px solid var(--ink-900);
  box-shadow:var(--shadow-hard);
  transition:transform .2s ease;
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 5. Header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--ink-800);
  border-bottom:2px solid var(--ink-900);
  transition:box-shadow .2s ease;
}
.site-header[data-scrolled="true"]{box-shadow:0 14px 30px rgba(0,0,0,.48)}

.header-rail{background:var(--ink-900);border-bottom:1px solid var(--line-soft)}
.header-rail__inner{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  min-height:34px;
  width:100%;max-width:var(--wrap);margin-inline:auto;
  padding-inline:var(--gutter);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  color:var(--stone);
}
.header-rail__tag{display:inline-flex;align-items:center;gap:9px;color:rgba(242,233,216,.72)}
.header-rail__signal{
  width:7px;height:7px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(53,242,208,.18);
  animation:rail-pulse 2.6s ease-in-out infinite;
}
@keyframes rail-pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 3px rgba(53,242,208,.18)}
  50%{opacity:.5;box-shadow:0 0 0 6px rgba(53,242,208,.05)}
}
.header-rail__cta{
  color:var(--amber);text-decoration:none;
  border-bottom:1px solid rgba(242,181,68,.5);
  padding-bottom:1px;
  transition:color .18s ease,border-color .18s ease;
}
.header-rail__cta:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

.header-main{background:var(--ink-800)}
.header-main__inner{
  display:flex;align-items:center;justify-content:space-between;gap:clamp(12px,2vw,24px);
  width:100%;max-width:var(--wrap);margin-inline:auto;
  padding:12px var(--gutter);
}

.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--paper);flex:0 0 auto}
.brand__mark{
  display:grid;place-items:center;
  width:40px;height:40px;flex:0 0 auto;
  background:var(--cyan);color:var(--ink-900);
  font-family:var(--font-display);font-weight:900;font-size:18px;line-height:1;
  border:2px solid var(--ink-900);
  box-shadow:4px 4px 0 rgba(6,18,15,.9);
  transition:background-color .18s ease,color .18s ease;
}
.brand:hover .brand__mark,.brand:focus-visible .brand__mark{background:var(--amber)}
.brand__text{display:flex;flex-direction:column;gap:3px}
.brand__name{font-family:var(--font-display);font-weight:900;font-size:clamp(17px,2.2vw,21px);line-height:1;letter-spacing:-.01em}
.brand__sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.22em;color:var(--stone)}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:10px 14px;
  border:2px solid rgba(242,233,216,.28);border-radius:var(--radius);
  background:var(--ink-700);color:var(--paper);
  font-weight:700;font-size:14px;
  box-shadow:3px 3px 0 rgba(6,18,15,.9);
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle__bars span{display:block;height:2px;width:100%;background:var(--cyan);transition:transform .22s ease,opacity .18s ease}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-toggle__text{font-family:var(--font-mono);font-size:12px;letter-spacing:.16em}

.site-nav{display:flex;align-items:center;min-width:0}
.site-nav__list{
  display:flex;align-items:stretch;
  border-left:1px solid var(--line-soft);
}
.site-nav__item{position:relative;display:flex}
.site-nav__item + .site-nav__item{border-left:1px solid var(--line-soft)}
.site-nav__link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:6px;
  padding:11px clamp(8px,1.3vw,15px);
  color:rgba(242,233,216,.78);
  font-weight:600;font-size:15px;line-height:1.4;
  text-decoration:none;
  transition:color .18s ease,background-color .18s ease;
}
.site-nav__index{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:var(--moss);transition:color .18s ease}
.site-nav__label{white-space:nowrap}
.site-nav__link:hover{color:var(--cyan);background:rgba(53,242,208,.07)}
.site-nav__link:hover .site-nav__index{color:var(--amber)}
.site-nav__link[aria-current="page"]{color:var(--cyan);background:rgba(53,242,208,.10)}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--amber)}
.site-nav__link[aria-current="page"]::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;background:var(--cyan);
}

.header-progress{
  position:absolute;left:0;right:0;bottom:0;height:3px;
  background:rgba(6,18,15,.6);
  pointer-events:none;
}
.header-progress__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--amber) 70%,var(--coral) 100%);
  transition:transform .12s linear;
}

/* ---------- 6. Footer ---------- */
.site-footer{
  background:var(--ink-900);
  border-top:2px solid rgba(53,242,208,.22);
  color:rgba(242,233,216,.78);
}
.footer-top{
  display:grid;gap:clamp(26px,4vw,44px);
  grid-template-columns:1fr;
  width:100%;max-width:var(--wrap);margin-inline:auto;
  padding:clamp(36px,5vw,64px) var(--gutter) clamp(28px,4vw,44px);
}
.footer-brand{
  display:block;
  padding-bottom:18px;
  border-bottom:1px solid var(--line-soft);
}
.footer-brand__mark{
  display:grid;place-items:center;
  width:38px;height:38px;
  background:var(--ink-700);color:var(--cyan);
  border:2px solid var(--cyan);
  font-family:var(--font-display);font-weight:900;font-size:17px;line-height:1;
  box-shadow:4px 4px 0 rgba(53,242,208,.16);
}
.footer-brand__name{
  margin-top:14px;
  font-family:var(--font-display);font-weight:900;font-size:20px;line-height:1.2;
  letter-spacing:-.01em;color:var(--paper);
}
.footer-brand__sub{
  margin-top:6px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--stone);
}
.footer-col__title{
  display:flex;align-items:center;gap:8px;
  padding-bottom:10px;margin-bottom:14px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  color:var(--amber);
}
.footer-col__title::before{content:"";width:6px;height:6px;background:var(--amber)}
.footer-list{display:grid;gap:10px}
.footer-link{
  display:inline-flex;align-items:center;gap:9px;
  min-height:28px;
  color:rgba(242,233,216,.78);
  font-size:15px;text-decoration:none;
  transition:color .16s ease;
}
.footer-link::before{
  content:"";width:10px;height:2px;background:var(--moss);
  transition:width .16s ease,background-color .16s ease;
}
.footer-link:hover,.footer-link:focus-visible{color:var(--cyan)}
.footer-link:hover::before,.footer-link:focus-visible::before{width:18px;background:var(--cyan)}

.footer-contact{display:grid;gap:12px;margin-top:18px;font-style:normal}
.footer-contact__row{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;align-items:baseline;font-size:14px}
.footer-contact__label{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:var(--stone)}
.footer-contact__value{color:var(--paper);word-break:break-word;line-height:1.6}
.footer-note{
  margin-top:16px;padding-left:12px;
  border-left:2px solid var(--clay);
  font-size:13px;line-height:1.75;color:var(--stone);max-width:36em;
}

.footer-bottom{border-top:1px solid var(--line);background:var(--ink-900)}
.footer-bottom__inner{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px 24px;
  width:100%;max-width:var(--wrap);margin-inline:auto;
  padding:16px var(--gutter);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--stone);
}
.footer-legal{color:rgba(242,233,216,.6)}
.footer-icp{color:rgba(242,233,216,.72)}
.footer-version{color:var(--amber)}

/* ---------- 7. Shared page components ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  min-height:48px;padding:0 22px;
  border:2px solid var(--ink-900);border-radius:var(--radius);
  font-family:var(--font-display);font-weight:800;font-size:15px;letter-spacing:.02em;
  text-decoration:none;color:var(--ink-900);
  box-shadow:6px 6px 0 rgba(6,18,15,.9);
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn--primary{background:var(--cyan);color:var(--ink-900)}
.btn--primary:hover,.btn--primary:focus-visible{background:#5cf7db;transform:translate(-2px,-2px);box-shadow:9px 9px 0 rgba(6,18,15,.9)}
.btn--amber{background:var(--amber);color:var(--ink-900)}
.btn--amber:hover,.btn--amber:focus-visible{background:#ffc760;transform:translate(-2px,-2px);box-shadow:9px 9px 0 rgba(6,18,15,.9)}
.btn--ghost{background:transparent;color:var(--paper);border-color:rgba(242,233,216,.32);box-shadow:6px 6px 0 rgba(6,18,15,.7)}
.btn--ghost:hover,.btn--ghost:focus-visible{border-color:var(--cyan);color:var(--cyan);transform:translate(-2px,-2px);box-shadow:9px 9px 0 rgba(6,18,15,.7)}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;
  padding-block:16px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--stone);
}
.breadcrumb a{color:rgba(242,233,216,.72);text-decoration:none;border-bottom:1px solid rgba(242,233,216,.24);transition:color .16s ease,border-color .16s ease}
.breadcrumb a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.breadcrumb [aria-current="page"]{color:var(--amber)}
.breadcrumb__sep{color:var(--moss)}

.chapter{
  display:grid;grid-template-columns:auto minmax(0,1fr);
  gap:clamp(14px,2.4vw,28px);align-items:start;
  padding-block:clamp(28px,5vw,56px);
  border-top:1px solid var(--line);
}
.chapter__index{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(2.4rem,7vw,4.5rem);line-height:.86;letter-spacing:-.04em;
  color:var(--amber);font-variant-numeric:tabular-nums;
}
.chapter__title{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(1.5rem,3.2vw,2.4rem);line-height:1.15;letter-spacing:-.02em;
  color:var(--paper);
}

.band{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 14px;border-radius:var(--radius);
  background:var(--moss);color:var(--ink-900);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;
}
.band--cyan{background:var(--cyan)}
.band--amber{background:var(--amber)}
.band--clay{background:var(--clay);color:var(--paper)}

.panel-card{
  position:relative;
  padding:clamp(18px,3vw,26px);
  background:var(--ink-700);
  border:2px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-hard);
}
.panel-card--paper{
  background:var(--paper);color:var(--ink-800);
  border-color:var(--ink-900);
}
.panel-card--paper h2,.panel-card--paper h3,.panel-card--paper h4,.panel-card--paper strong{color:var(--ink-900)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;border-radius:var(--radius);
  border:1px solid var(--line-strong);
  background:var(--cyan-soft);color:var(--cyan);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
}
.tag--amber{color:var(--amber);background:rgba(242,181,68,.12);border-color:rgba(242,181,68,.36)}
.tag--coral{color:var(--coral);background:rgba(255,107,90,.12);border-color:rgba(255,107,90,.38)}
.tag--moss{color:#8FB292;background:rgba(92,122,94,.16);border-color:rgba(92,122,94,.42)}

.media-frame{
  position:relative;overflow:hidden;
  border:2px solid var(--line);
  border-radius:var(--radius);
  background:var(--ink-700);
  box-shadow:8px 8px 0 rgba(6,18,15,.7);
}
.media-frame--16x9{aspect-ratio:16/9}
.media-frame--4x3{aspect-ratio:4/3}
.media-frame--1x1{aspect-ratio:1/1}
.media-frame__img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s cubic-bezier(.22,.7,.2,1);
}
.media-frame:hover .media-frame__img{transform:scale(1.045)}
.media-frame__tag{
  position:absolute;top:10px;left:10px;z-index:2;
  padding:3px 9px;
  background:rgba(6,18,15,.72);
  border:1px solid var(--line-strong);
  color:var(--cyan);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
}
.media-frame__mark{
  position:absolute;right:6px;bottom:-.22em;z-index:1;
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(2rem,7vw,4.5rem);line-height:1;
  color:rgba(242,233,216,.10);
  pointer-events:none;
}

/* ---------- 8. Reveal motion ---------- */
.reveal-ready [data-reveal]{
  opacity:0;
  transform:translate3d(-16px,12px,0);
  transition:opacity .55s ease,transform .55s cubic-bezier(.22,.7,.2,1);
  will-change:opacity,transform;
}
.reveal-ready [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 9. Responsive ---------- */
@media (max-width:1100px){
  .site-nav__link{padding:10px 9px;font-size:14px}
  .site-nav__index{display:none}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .header-main__inner{flex-wrap:wrap;row-gap:8px}
  .site-nav{display:none;flex-basis:100%;order:3}
  .site-nav[data-open="true"]{display:block}
  .site-nav__list{flex-direction:column;border-left:0;border-top:1px solid var(--line);padding:4px 0 10px}
  .site-nav__item + .site-nav__item{border-left:0;border-top:1px solid var(--line-soft)}
  .site-nav__link{display:flex;align-items:center;gap:10px;width:100%;min-height:52px;padding:12px 6px;font-size:16px}
  .site-nav__index{display:inline-block;font-size:11px}
  .site-nav__link[aria-current="page"]::after{left:0;right:auto;top:12px;bottom:12px;width:3px;height:auto}
  .header-rail__inner{font-size:10px;letter-spacing:.14em}
  #main-content{scroll-margin-top:150px}
}
@media (min-width:640px){
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
}
@media (min-width:1024px){
  .footer-top{grid-template-columns:1.25fr .8fr .8fr 1.2fr}
  .footer-brand{grid-column:auto;border-bottom:0;padding-bottom:0}
}
@media (max-width:420px){
  .brand__sub{display:none}
  .nav-toggle__text{display:none}
  .footer-bottom__inner{font-size:11px}
}

/* ---------- 10. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal-ready [data-reveal]{opacity:1;transform:none;transition:none}
  .media-frame:hover .media-frame__img{transform:none}
  .header-progress__bar{transition:none}
}