/* ==========================================================
   亚星体育看台 · 共享样式 /assets/site.css
   深蓝夜色 + 亮橙灯带 + 荧光绿数据 · 侧边轨道导航 + 专题研究板
   ========================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink-900:#050B14;
  --ink:#0A1A2F;
  --ink-2:#132A4A;
  --orange:#FF6A00;
  --orange-2:#FFA45C;
  --neon:#9BFF3B;
  --ice:#E8F1FF;
  --muted:#AAB8CC;
  --white:#FFFFFF;
  --glass:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.12);
  --line-2:rgba(255,255,255,.24);
  --rail-w:240px;
  --rail-w-min:88px;
  --maxw:1180px;
  --gutter:clamp(16px,4vw,40px);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --dur:220ms;
  --ease:cubic-bezier(.22,.7,.3,1);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* ---------- 2. 重置与中文排版 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-sans);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--ice);
  background:var(--ink);
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(58% 46% at 86% 2%,rgba(255,106,0,.18),transparent 62%),
    radial-gradient(48% 42% at 4% 90%,rgba(155,255,59,.10),transparent 62%),
    linear-gradient(165deg,#091627 0%,#0A1A2F 45%,#0b1d33 100%);
}
img,svg,video{max-width:100%;display:block}
h1,h2,h3,h4,h5{font-weight:900;line-height:1.12;letter-spacing:-.015em;color:var(--white);margin:0 0 .6em}
h1{font-size:clamp(2.25rem,5.4vw,4rem)}
h2{font-size:clamp(1.6rem,3.2vw,2.5rem)}
h3{font-size:clamp(1.15rem,1.9vw,1.5rem);letter-spacing:-.01em}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.2em}
a{color:var(--orange-2);text-underline-offset:3px}
a:hover{color:var(--white)}
::selection{background:var(--orange);color:#08111f}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px;box-shadow:0 0 0 4px rgba(155,255,59,.25);border-radius:6px}

/* ---------- 3. 通用排版工具 ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.display-1{font-size:clamp(2.75rem,7.2vw,5.5rem);line-height:.98;letter-spacing:-.03em;font-weight:900;margin:0 0 .4em;color:var(--white)}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--orange-2);
  margin:0 0 14px;
}
.lede{font-size:clamp(1.05rem,1.5vw,1.22rem);line-height:1.7;color:rgba(232,241,255,.88);max-width:64ch}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 13px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line-2);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.04em;
  color:var(--ice);
}
.chip--orange{border-color:rgba(255,106,0,.5);color:var(--orange-2)}
.chip--neon{border-color:rgba(155,255,59,.45);color:var(--neon)}

/* ---------- 4. 布局与网格 ---------- */
.section{position:relative;padding-block:clamp(48px,7vw,96px)}
.section--tight{padding-block:clamp(32px,4vw,56px)}
.section--dark{background:linear-gradient(150deg,#0A1A2F,#0f2440 58%,#0A1A2F)}
.section--ice{background:var(--ice);color:var(--ink)}
.section--ice h1,.section--ice h2,.section--ice h3{color:#0A1A2F}
.section--ice .eyebrow{color:#B84600}
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.2vw,26px)}
.col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9,.col-12{grid-column:span 12}
@media (min-width:768px){
  .col-3{grid-column:span 3}
  .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-9{grid-column:span 9}
  .col-12{grid-column:span 12}
}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 22px;
  border-radius:999px;
  border:1px solid transparent;
  font:inherit;
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  text-decoration:none;
  cursor:pointer;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn--primary{background:linear-gradient(120deg,var(--orange),#ff8a33);color:#08111f;box-shadow:0 10px 26px rgba(255,106,0,.32)}
.btn--primary:hover{color:#08111f;transform:translateY(-2px);box-shadow:0 15px 34px rgba(255,106,0,.44)}
.btn--ghost{background:var(--glass);color:var(--white);border-color:var(--line-2);backdrop-filter:blur(12px) saturate(130%)}
.btn--ghost:hover{color:var(--white);border-color:var(--orange);transform:translateY(-2px)}
.btn--quiet{background:transparent;color:var(--neon);border-color:rgba(155,255,59,.45)}
.btn--quiet:hover{color:var(--neon);background:rgba(155,255,59,.12)}
.btn--sm{padding:9px 16px;font-size:13.5px}

/* ---------- 6. 研究板 / 卡片 / 数据 / 图片容器 ---------- */
.board{
  position:relative;
  border-radius:var(--r-lg);
  padding:clamp(20px,3vw,34px);
  background:linear-gradient(140deg,rgba(255,255,255,.10),rgba(255,255,255,.025));
  border:1px solid var(--line-2);
  backdrop-filter:blur(16px) saturate(130%);
}
.board__meta{
  margin:0 0 10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--neon);
}
.card{
  position:relative;
  padding:clamp(18px,2.4vw,26px);
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--ink-2);
  color:var(--ice);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:rgba(255,164,92,.55);box-shadow:0 14px 34px rgba(5,11,20,.5)}
.card--glass{background:var(--glass);backdrop-filter:blur(14px) saturate(130%);border-color:var(--line-2)}
.card--accent{border-color:rgba(255,106,0,.5);background:linear-gradient(135deg,rgba(255,106,0,.16),rgba(19,42,74,.92))}
.stat{display:flex;flex-direction:column;gap:4px}
.stat__value{font-family:var(--font-mono);font-weight:700;font-size:clamp(1.6rem,3.4vw,2.6rem);line-height:1;color:var(--neon)}
.stat__label{font-size:13px;color:var(--muted)}
.media{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(140deg,#132A4A,#0A1A2F);
}
.media > img,.media > picture > img{width:100%;height:100%;object-fit:cover}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media__caption{
  position:absolute;
  inset:auto 0 0 0;
  padding:14px 16px;
  font-size:13px;
  color:var(--ice);
  background:linear-gradient(0deg,rgba(5,11,20,.88),transparent);
}
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 18px;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--muted);
}
.breadcrumbs a{color:var(--muted);text-decoration:none}
.breadcrumbs a:hover{color:var(--orange-2)}
.breadcrumbs [aria-current="page"]{color:var(--ice)}

/* ---------- 7. 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:130;
  padding:10px 18px;
  border-radius:var(--r-sm);
  background:var(--orange);
  color:#08111f;
  font-weight:700;
  text-decoration:none;
  transform:translateY(-220%);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus{transform:translateY(0);color:#08111f}

/* ---------- 8. 头部：进度条 ---------- */
.site-header{position:relative;z-index:70}
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:3px;
  z-index:95;
  background:rgba(255,255,255,.06);
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--orange),var(--neon));
  transition:width .12s linear;
}

/* ---------- 9. 头部：移动端吸顶条 ---------- */
.topbar{
  position:sticky;
  top:0;
  z-index:78;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:12px var(--gutter);
  background:rgba(10,26,47,.88);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  min-width:0;
  text-decoration:none;
  color:var(--white);
}
.brand__glyph{
  flex:0 0 auto;
  width:38px;
  height:38px;
  display:grid;
  place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--orange),#ff8a33 55%,var(--orange-2));
  color:#08111f;
  font-weight:900;
  font-size:17px;
  box-shadow:0 6px 18px rgba(255,106,0,.35);
}
.brand__text{display:flex;flex-direction:column;min-width:0;line-height:1.2}
.brand__name{font-size:17px;font-weight:900;letter-spacing:.02em;white-space:nowrap}
.brand__tagline{font-size:11.5px;color:var(--muted);white-space:nowrap}
.brand--footer .brand__glyph{width:44px;height:44px;font-size:19px}
.brand--footer .brand__name{font-size:19px}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:9px 16px;
  border-radius:999px;
  border:1px solid var(--line-2);
  background:var(--glass);
  color:var(--white);
  font:inherit;
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease)
}
.nav-toggle:hover{border-color:var(--orange)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle__bars span{display:block;height:2px;border-radius:2px;background:var(--orange);transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.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)}

/* ---------- 10. 头部：侧边轨道导航（兼移动抽屉） ---------- */
.rail{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  z-index:85;
  width:var(--rail-w);
  display:flex;
  flex-direction:column;
  gap:16px;
  padding:26px 18px 22px;
  overflow-y:auto;
  background:linear-gradient(180deg,#08152a,#0d2138 55%,#102542);
  border-right:1px solid var(--line);
  transform:translateX(-104%);
  transition:transform var(--dur) var(--ease),width var(--dur) var(--ease);
}
.rail::after{
  content:"";
  position:absolute;
  top:0;
  right:-1px;
  width:3px;
  height:36%;
  background:linear-gradient(180deg,var(--orange),rgba(255,106,0,0));
  pointer-events:none;
}
.rail[data-open]{transform:translateX(0)}
.rail-scrim{
  position:fixed;
  inset:0;
  z-index:80;
  background:rgba(4,10,20,.62);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.rail-scrim[data-open]{opacity:1;visibility:visible}
.rail__head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.rail__brand{display:inline-flex;align-items:center;gap:12px;min-width:0;text-decoration:none;color:var(--white)}
.rail__caption{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:rgba(170,184,204,.7);
}
.rail__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.rail__link{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 12px;
  border-radius:10px;
  border-left:3px solid transparent;
  color:var(--muted);
  font-size:15.5px;
  font-weight:500;
  text-decoration:none;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.rail__link:hover{background:var(--glass);color:var(--white);transform:translateX(3px)}
.rail__idx{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:rgba(170,184,204,.65);min-width:20px}
.rail__label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rail__link[aria-current="page"]{
  color:var(--white);
  background:linear-gradient(90deg,rgba(255,106,0,.24),rgba(255,106,0,.03));
  border-left-color:var(--orange);
}
.rail__link[aria-current="page"] .rail__idx{color:var(--neon)}
.rail__foot{
  margin-top:auto;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding-top:18px;
  border-top:1px solid var(--line);
}
.rail__cta{width:100%}
.rail__region{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--muted);
  font:inherit;
  font-size:13px;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.rail__region:hover{border-color:var(--orange-2);color:var(--white);background:rgba(255,255,255,.05)}
.rail__region-key{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:rgba(170,184,204,.7)}
.rail__region-value{color:var(--neon);font-family:var(--font-mono);font-size:12.5px}
.rail__collapse{
  display:none;
  align-items:center;
  gap:8px;
  padding:7px 11px;
  border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--muted);
  font:inherit;
  font-size:12.5px;
  cursor:pointer;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rail__collapse:hover{color:var(--white);border-color:var(--orange)}
.rail__collapse-icon{
  width:8px;height:8px;
  border-left:2px solid currentColor;
  border-bottom:2px solid currentColor;
  transform:rotate(45deg);
  transition:transform var(--dur) var(--ease);
}

/* ---------- 11. 桌面端：轨道常驻 / 折叠 / 主体让位 ---------- */
@media (min-width:1024px){
  body{
    padding-left:var(--rail-w);
    transition:padding-left var(--dur) var(--ease);
  }
  .topbar{display:none}
  .rail-scrim{display:none}
  .rail{transform:translateX(0)}
  .rail__collapse{display:inline-flex}
  .scroll-progress{left:var(--rail-w)}
  html.rail-collapsed body{padding-left:var(--rail-w-min)}
  html.rail-collapsed .scroll-progress{left:var(--rail-w-min)}
  html.rail-collapsed .rail{width:var(--rail-w-min);align-items:center;padding-inline:12px}
  html.rail-collapsed .brand__text,
  html.rail-collapsed .rail__label,
  html.rail-collapsed .rail__caption,
  html.rail-collapsed .rail__collapse-label,
  html.rail-collapsed .rail__region-key{display:none}
  html.rail-collapsed .rail__head{justify-content:center}
  html.rail-collapsed .rail__list{width:100%;align-items:center}
  html.rail-collapsed .rail__link{justify-content:center;width:46px;padding:11px 0;border-left-width:0;border-bottom:3px solid transparent}
  html.rail-collapsed .rail__link[aria-current="page"]{border-bottom-color:var(--orange)}
  html.rail-collapsed .rail__idx{min-width:auto;font-size:12px}
  html.rail-collapsed .rail__foot{width:100%;align-items:center}
  html.rail-collapsed .rail__cta{padding:9px 0;font-size:12px;width:56px}
  html.rail-collapsed .rail__region{width:56px;padding:8px 0}
  html.rail-collapsed .rail__collapse-icon{transform:rotate(-135deg)}
}
@media (max-width:1023px){
  body.nav-open{overflow:hidden}
}

/* ---------- 12. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,90px);
  padding:clamp(44px,6vw,72px) 0 26px;
  color:var(--muted);
  background:
    radial-gradient(120% 90% at 88% 0%,rgba(255,106,0,.16),transparent 60%),
    radial-gradient(90% 70% at 4% 100%,rgba(155,255,59,.10),transparent 62%),
    var(--ink-900);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:linear-gradient(90deg,var(--orange),var(--neon) 52%,rgba(155,255,59,0));
}
.footer-inner{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1.15fr);
  gap:clamp(28px,4vw,56px);
}
.footer-brand{min-width:0}
.footer-summary{margin:18px 0 0;font-size:14.5px;line-height:1.8;color:rgba(232,241,255,.82);max-width:44ch}
.footer-h{
  margin:0 0 16px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--orange-2);
}
.footer-nav{padding-top:4px;min-width:0}
.footer-links{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px 18px;
}
.footer-links a{
  display:inline-block;
  padding-bottom:2px;
  font-size:14.5px;
  color:var(--muted);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-links a:hover{color:var(--white);border-bottom-color:var(--orange)}
.footer-contact{padding-top:4px;min-width:0}
.contact-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.contact-list li{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px}
.contact-list__key{
  min-width:64px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--orange-2);
}
.contact-list__val{font-size:14.5px;color:var(--ice);word-break:break-all}
.footer-note{margin:16px 0 0;max-width:42ch;font-size:12.5px;line-height:1.75;color:rgba(170,184,204,.78)}
.footer-region{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:20px}
.footer-region__title{font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:rgba(170,184,204,.8)}
.region-btn{
  padding:7px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--muted);
  font:inherit;
  font-size:13px;
  cursor:pointer;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.region-btn:hover{color:var(--white);border-color:var(--orange-2)}
.region-btn[aria-pressed="true"]{background:rgba(255,106,0,.18);border-color:var(--orange);color:var(--white)}
.footer-region__note{margin:12px 0 0;font-size:12.5px;line-height:1.7;color:var(--neon)}
.copy-btn{
  padding:4px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:12px;
  cursor:pointer;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.copy-btn:hover{color:var(--white);border-color:var(--orange)}
.copy-btn[data-copied="true"]{color:var(--neon);border-color:rgba(155,255,59,.5)}
.footer-bottom{margin-top:clamp(28px,4vw,50px);border-top:1px solid var(--line)}
.footer-legal{
  max-width:var(--maxw);
  margin-inline:auto;
  padding:18px var(--gutter) 0;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 24px;
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:1.7;
  color:rgba(170,184,204,.78);
}
.footer-legal p{margin:0}
.footer-legal a{color:inherit;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.22)}
.footer-legal a:hover{color:var(--orange-2);border-bottom-color:var(--orange-2)}
@media (max-width:900px){
  .footer-inner{grid-template-columns:1fr}
}

/* ---------- 13. 进场显现与无障碍 ---------- */
html.js [data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
html.js [data-reveal].is-visible{opacity:1;transform:none}

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

/* ---------- 14. 平板微调 ---------- */
@media (min-width:640px) and (max-width:1023px){
  .rail{width:min(320px,86vw)}
  .section{padding-block:clamp(44px,6vw,72px)}
}