/* ==========================================================================
   FB看台 · 共享站点样式 /assets/site.css
   夜赛底蓝黑 + 荧光青柠绿 · 左侧索引轨即页面边框
   ========================================================================== */

:root{
  --ink-950:#060A12;
  --ink-900:#0F1A2A;
  --ink-800:#0B2B2E;

  --glass:#DCE9EC;
  --glass-08:rgba(220,233,236,.08);
  --glass-12:rgba(220,233,236,.12);
  --glass-14:rgba(220,233,236,.14);

  --text:#E8F1F0;
  --text-dim:#93A7AE;
  --lime:#B7FF3B;
  --aqua:#24E0C8;
  --violet:#6E5BFF;
  --violet-soft:#9A8CFF;
  --alert:#FF5A2B;
  --white:#FFFFFF;

  --rail-w:72px;
  --bar-h:64px;
  --edge:1280px;

  --font-sans:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;

  --track-title:.08em;
  --track-anno:.3em;
  --ease:cubic-bezier(.22,.7,.2,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-left:var(--rail-w);
  min-height:100vh;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background-color:var(--ink-950);
  background-image:
    radial-gradient(62% 42% at 16% -6%, rgba(36,224,200,.11), transparent 70%),
    radial-gradient(54% 38% at 90% 3%, rgba(110,91,255,.10), transparent 72%),
    radial-gradient(48% 34% at 52% 106%, rgba(183,255,59,.06), transparent 72%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;height:auto;display:block}
h1,h2,h3,h4,p,ul,ol,figure,address{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--aqua);text-decoration:none}
a:hover{color:var(--lime)}
button{font:inherit;color:inherit}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--aqua);outline-offset:3px;border-radius:0}
::selection{background:var(--lime);color:var(--ink-950)}

/* ---------- 中文排版 ---------- */
h1,h2,h3{
  font-weight:800;
  letter-spacing:var(--track-title);
  line-height:1.24;
  color:var(--white);
}
h1{font-size:clamp(2.2rem,6vw,4.6rem)}
h2{font-size:clamp(1.5rem,3.2vw,2.4rem)}
h3{font-size:clamp(1.12rem,1.8vw,1.4rem)}
p{max-width:68ch}
strong{color:var(--white)}
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  letter-spacing:.02em;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;top:8px;left:8px;z-index:200;
  padding:10px 18px;
  background:var(--lime);color:var(--ink-950);
  font-size:13px;font-weight:700;letter-spacing:.12em;
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0);color:var(--ink-950)}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:40;
  background:linear-gradient(180deg, rgba(6,10,18,.96), rgba(6,10,18,.80));
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--glass-12);
}
.site-header__bar{
  position:relative;
  display:flex;align-items:center;gap:clamp(10px,2.4vw,28px);
  min-height:var(--bar-h);
  padding:9px clamp(14px,3.6vw,40px);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--text);text-decoration:none;flex:none;
}
.brand:hover{color:var(--text)}
.brand__mark{
  display:grid;place-items:center;
  width:34px;height:34px;flex:none;
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  color:var(--ink-950);background:var(--lime);
  clip-path:polygon(0 0,100% 0,100% 72%,74% 100%,0 100%);
}
.brand__name{
  font-size:19px;font-weight:800;letter-spacing:.14em;white-space:nowrap;
}
.brand__tagline{
  font-size:12px;letter-spacing:.12em;color:var(--text-dim);
  padding-left:clamp(10px,2vw,20px);
  border-left:1px solid var(--glass-12);
  white-space:nowrap;
}
.site-header__tools{
  display:flex;align-items:center;gap:10px;margin-left:auto;
}

/* 搜索 */
.search{position:relative}
.search__trigger{
  display:inline-flex;align-items:center;gap:10px;
  max-width:330px;
  padding:9px 13px;
  background:rgba(220,233,236,.06);
  border:1px solid var(--glass-12);
  color:var(--text-dim);
  font-size:13px;letter-spacing:.06em;
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
  clip-path:polygon(10px 0,100% 0,100% 100%,0 100%,0 10px);
}
.search__trigger:hover{border-color:var(--aqua);color:var(--text)}
.search__hint{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.search__icon{font-size:16px;color:var(--aqua);line-height:1}
.search__panel{
  position:absolute;top:calc(100% + 10px);right:0;z-index:70;
  width:min(360px,86vw);
  padding:16px;
  background:var(--ink-900);
  border:1px solid var(--glass-14);
  filter:drop-shadow(0 26px 50px rgba(0,0,0,.6));
  clip-path:polygon(0 0,100% 0,100% 100%,18px 100%,0 calc(100% - 18px));
}
.search__label{
  display:block;
  font-size:11px;letter-spacing:var(--track-anno);color:var(--text-dim);
  margin-bottom:8px;
}
.search__input{
  width:100%;
  padding:10px 12px;
  background:rgba(6,10,18,.85);
  border:1px solid var(--glass-12);
  color:var(--text);
  font-family:var(--font-sans);font-size:15px;
}
.search__input::placeholder{color:#5E7079}
.search__meta{
  margin:14px 0 8px;
  font-size:11px;letter-spacing:var(--track-anno);color:var(--text-dim);
}
.search__list{display:flex;flex-direction:column;gap:2px}
.search__item{
  display:block;
  padding:9px 10px 9px 16px;
  font-size:14px;letter-spacing:.04em;color:var(--text);
  border-left:2px solid var(--glass-12);
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.search__item:hover{
  border-left-color:var(--lime);
  background:rgba(183,255,59,.08);
  color:var(--text);
}
.search__empty{font-size:13px;color:var(--text-dim);padding:8px 2px}

/* 常驻变更入口 */
.flag-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;
  font-size:13px;font-weight:700;letter-spacing:.1em;
  color:var(--alert);
  border:1px solid rgba(255,90,43,.42);
  background:rgba(255,90,43,.08);
  white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease);
  clip-path:polygon(0 0,100% 0,100% 100%,10px 100%,0 calc(100% - 10px));
}
.flag-link:hover{background:rgba(255,90,43,.2);color:#FFD9CB}
.flag-link__dot{
  width:7px;height:7px;flex:none;border-radius:50%;
  background:var(--alert);
  box-shadow:0 0 0 4px rgba(255,90,43,.16);
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 12px;
  background:transparent;
  border:1px solid var(--glass-14);
  color:var(--text);
  font-size:13px;letter-spacing:.12em;
  cursor:pointer;
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:1.5px;background:currentColor}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:.3}

/* 滚动进度 */
.scroll-meter{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:linear-gradient(90deg,var(--aqua),var(--lime));
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .12s linear;
}

/* ---------- 竖向索引轨导航 ---------- */
.nav-rail{
  position:fixed;top:0;left:0;bottom:0;z-index:60;
  width:var(--rail-w);
  display:flex;flex-direction:column;align-items:center;
  padding:16px 0 20px;
  background:linear-gradient(180deg, rgba(15,26,42,.94), rgba(6,10,18,.96));
  border-right:1px solid var(--glass-12);
  backdrop-filter:blur(14px);
  overflow-y:auto;
  overscroll-behavior:contain;
  scrollbar-width:thin;
}
.nav-rail__list{
  margin:auto 0;
  width:100%;
  display:flex;flex-direction:column;align-items:center;gap:2px;
}
.nav-rail__item{width:100%}
.nav-rail__link{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:8px;
  min-height:76px;
  padding:10px 3px;
  color:var(--text-dim);
  border-left:2px solid transparent;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav-rail__link:hover{color:var(--text);background:rgba(220,233,236,.06)}
.nav-rail__link[aria-current="page"]{
  color:var(--lime);
  border-left-color:var(--lime);
  background:linear-gradient(90deg, rgba(183,255,59,.16), transparent 90%);
}
.nav-rail__index{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.12em;
  opacity:.72;
}
.nav-rail__label{
  writing-mode:vertical-rl;
  text-orientation:upright;
  font-size:13px;font-weight:700;
  letter-spacing:.22em;
}
.nav-rail__alert{
  display:flex;flex-direction:column;align-items:center;gap:9px;
  padding:14px 0 4px;
  color:var(--alert);
  border-top:1px solid rgba(255,90,43,.28);
  transition:color .18s var(--ease);
}
.nav-rail__alert:hover{color:#FFD9CB}
.nav-rail__alert-dot{
  width:8px;height:8px;border-radius:50%;background:var(--alert);
  box-shadow:0 0 0 4px rgba(255,90,43,.16);
}
.nav-rail__alert-text{
  writing-mode:vertical-rl;text-orientation:upright;
  font-size:11px;letter-spacing:.24em;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,10vw,120px);
  background:linear-gradient(180deg,var(--ink-900),var(--ink-950));
  border-top:1px solid var(--glass-12);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--lime),transparent 40%,var(--aqua) 76%,transparent);
  opacity:.65;
}
.site-footer::after{
  content:"";
  position:absolute;right:-12%;top:-30%;width:52%;height:150%;
  background:linear-gradient(118deg, transparent 46%, rgba(36,224,200,.05) 47%, transparent 62%);
  pointer-events:none;
}
.site-footer__inner{
  position:relative;z-index:1;
  display:grid;
  grid-template-columns:minmax(220px,1.25fr) repeat(3,minmax(0,1fr));
  gap:clamp(22px,3vw,44px);
  max-width:var(--edge);
  margin:0 auto;
  padding:clamp(40px,6vw,76px) clamp(18px,4vw,48px) clamp(24px,3vw,36px);
}
.site-footer__brand{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.site-footer__tagline{
  font-size:14px;letter-spacing:.1em;color:var(--text);
  max-width:22ch;
}
.site-footer__note{
  font-size:12px;line-height:1.9;letter-spacing:.04em;color:var(--text-dim);
  max-width:26ch;
}
.footer-col{display:flex;flex-direction:column;gap:14px}
.footer-col__title{
  font-size:11px;font-weight:700;letter-spacing:var(--track-anno);
  color:var(--text-dim);text-transform:uppercase;
}
.footer-col__list{display:flex;flex-direction:column;gap:9px}
.footer-col__list a{
  font-size:14px;letter-spacing:.06em;color:var(--text);
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.footer-col__list a:hover{color:var(--lime);padding-left:5px}
.site-footer__contact{
  grid-column:1 / -1;
  margin-top:clamp(14px,2vw,26px);
  padding-top:clamp(18px,2.4vw,28px);
  border-top:1px solid var(--glass-08);
  display:flex;flex-direction:column;gap:14px;
}
.footer-col__list--contact{
  flex-direction:row;flex-wrap:wrap;gap:8px clamp(18px,3vw,44px);
  font-size:13px;letter-spacing:.04em;color:var(--text);
}
.footer-col__list--contact address{font-style:normal;max-width:46ch;color:var(--text)}
.site-footer__base{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;align-items:center;gap:12px clamp(16px,3vw,36px);
  max-width:var(--edge);
  margin:0 auto;
  padding:18px clamp(18px,4vw,48px) clamp(28px,4vw,44px);
  border-top:1px solid var(--glass-08);
  font-size:12px;letter-spacing:.08em;color:var(--text-dim);
}
.site-footer__icp{color:var(--text-dim)}
.site-footer__change{
  margin-left:auto;
  color:var(--alert);
  border-left:1px solid rgba(255,90,43,.34);
  padding-left:16px;
}
.site-footer__change:hover{color:#FFD9CB}

/* ---------- 容器与栅格 ---------- */
.shell{
  width:100%;max-width:var(--edge);
  margin:0 auto;
  padding-inline:clamp(18px,4vw,48px);
}
.shell--wide{max-width:1520px}
.stack{display:flex;flex-direction:column;gap:var(--stack-gap,24px)}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.1em;color:var(--text-dim);
}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--glass-12)}
.breadcrumb a{color:var(--text-dim)}
.breadcrumb a:hover{color:var(--aqua)}
.breadcrumb [aria-current="page"]{color:var(--text)}

/* ---------- 章节标记 / 竖排注释 ---------- */
.section-marker{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.section-marker__index{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.2em;
  color:var(--lime);
}
.anno{
  writing-mode:vertical-rl;text-orientation:upright;
  font-size:12px;letter-spacing:var(--track-anno);
  color:var(--text-dim);
}

/* ---------- 卡片 ---------- */
.card{
  position:relative;
  display:block;
  padding:clamp(18px,2.4vw,28px);
  background:var(--ink-900);
  border:1px solid var(--glass-08);
  color:var(--text);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{
  transform:translateY(-6px);
  border-color:var(--glass-14);
  box-shadow:0 22px 46px rgba(0,0,0,.45);
}
.card--glass{
  background:rgba(220,233,236,.06);
  backdrop-filter:blur(10px);
  border-color:var(--glass-12);
}
.card--slab{background:var(--ink-800)}

/* ---------- 记分牌数据块 ---------- */
.readout{
  position:relative;
  padding:16px 20px;
  background:var(--ink-800);
  border-left:2px solid var(--lime);
}
.readout__value{
  display:block;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(2rem,5vw,3.4rem);
  line-height:1.05;
  color:var(--white);
}
.readout__label{
  display:block;
  margin-top:8px;
  font-size:12px;letter-spacing:.2em;color:var(--text-dim);
}

/* ---------- 时间线 ---------- */
.timeline{
  position:relative;
  padding-left:28px;
  border-left:1px solid var(--glass-12);
}
.timeline__item{position:relative;padding-bottom:26px}
.timeline__item:last-child{padding-bottom:0}
.timeline__item::before{
  content:"";
  position:absolute;left:-28px;top:.6em;
  width:9px;height:9px;margin-left:-5px;
  background:var(--ink-950);
  border:1px solid var(--aqua);
}
.timeline__item--alert::before{background:var(--alert);border-color:var(--alert)}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  font-size:11px;letter-spacing:.18em;
  color:var(--text-dim);
  border:1px solid var(--glass-12);
}
.tag--live{color:var(--lime);border-color:rgba(183,255,59,.42)}
.tag--alert{color:var(--alert);border-color:rgba(255,90,43,.42)}
.tag--violet{color:var(--violet-soft);border-color:rgba(110,91,255,.55)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 22px;
  font-size:14px;font-weight:700;letter-spacing:.12em;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
}
.btn--primary{background:var(--lime);color:var(--ink-950)}
.btn--primary:hover{background:#CDFF6E;color:var(--ink-950);transform:translateY(-2px)}
.btn--ghost{background:transparent;border-color:var(--glass-14);color:var(--text)}
.btn--ghost:hover{border-color:var(--aqua);color:var(--aqua);transform:translateY(-2px)}

/* ---------- 图片容器基础规则 ---------- */
.media-figure{margin:0;display:flex;flex-direction:column;gap:10px}
.media-frame{
  position:relative;display:block;
  overflow:hidden;
  background:var(--ink-800);
  border:1px solid var(--glass-12);
}
.media-frame img{
  width:100%;height:100%;
  object-fit:cover;object-position:center;
}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--plate{aspect-ratio:4/3}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--slash{clip-path:polygon(0 0,100% 0,100% 88%,0 100%)}
.media-figure__caption{
  font-size:12px;letter-spacing:.1em;color:var(--text-dim);
}

/* ---------- 显现 ---------- */
.js-reveal [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.js-reveal [data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 平板 ---------- */
@media (max-width:1100px){
  body{font-size:16px}
  .site-footer__inner{grid-template-columns:minmax(200px,1fr) repeat(3,minmax(0,1fr))}
}

/* ---------- 移动端 / 小屏 ---------- */
@media (max-width:900px){
  :root{--rail-w:0px}

  .site-header__bar{padding-inline:14px}
  .brand__tagline{display:none}
  .nav-toggle{display:inline-flex}

  .nav-rail{
    width:min(320px,86vw);
    align-items:stretch;
    padding:18px 0 24px;
    transform:translateX(-104%);
    transition:transform .3s var(--ease);
    box-shadow:60px 0 90px rgba(0,0,0,.55);
  }
  .nav-rail[data-open]{transform:translateX(0)}
  .nav-rail__list{margin:0;padding:0 12px;gap:2px;align-items:stretch}
  .nav-rail__link{
    flex-direction:row;align-items:center;justify-content:flex-start;
    gap:14px;min-height:0;padding:14px 12px;
  }
  .nav-rail__link[aria-current="page"]{background:linear-gradient(90deg, rgba(183,255,59,.18), transparent 88%)}
  .nav-rail__label{
    writing-mode:horizontal-tb;text-orientation:mixed;
    font-size:15px;letter-spacing:.14em;
  }
  .nav-rail__alert{
    flex-direction:row;align-items:center;gap:10px;
    margin:18px 12px 0;padding:14px 12px 0;
  }
  .nav-rail__alert-text{writing-mode:horizontal-tb;text-orientation:mixed;font-size:13px;letter-spacing:.16em}

  .site-footer__inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-footer__brand{grid-column:1 / -1}
  .site-footer__contact{grid-column:1 / -1}
}

@media (max-width:720px){
  .search__hint{display:none}
  .search__trigger{padding:9px 11px}
  .search__panel{
    position:fixed;
    top:calc(var(--bar-h) + 10px);
    left:14px;right:14px;width:auto;
  }
  .site-footer__inner{grid-template-columns:1fr}
  .site-footer__change{margin-left:0;border-left:0;padding-left:0}
}

@media (max-width:520px){
  .brand__name{display:none}
  .nav-toggle__text{display:none}
  .flag-link{padding:8px 11px;font-size:12px;letter-spacing:.06em}
  body{font-size:16px}
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .js-reveal [data-reveal]{opacity:1!important;transform:none!important}
  .card:hover,.btn:hover{transform:none}
  .scroll-meter{transition:none}
}