/* ==========================================================
   乐鱼体育 · 共享样式表 /assets/site.css
   语言：夜间赛场冷光 + 数据屏；侧边轨道构成页面视觉边框
   ========================================================== */

:root{
  --deep:#071C2E;
  --deep-2:#0E2C44;
  --deep-3:#0B2338;
  --slate:#16394F;
  --cyan:#22D3EE;
  --cyan-soft:#7FE7F5;
  --coral:#FF6B4A;
  --amber:#FFC24B;
  --violet:#6C6CE5;
  --fog:#E8F1F7;
  --mute:#9FB6C6;
  --line:rgba(159,182,198,.16);
  --line-strong:rgba(34,211,238,.34);
  --rail-w:88px;
  --topbar-h:46px;
  --maxw:1180px;
  --radius:18px;
  --radius-sm:12px;
  --ease:cubic-bezier(.22,.68,.3,1);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* ---------- base ---------- */
body{
  min-height:100vh;
  padding-left:var(--rail-w);
  background-color:var(--deep);
  background-image:
    radial-gradient(1100px 620px at 84% -12%, rgba(34,211,238,.13), transparent 60%),
    radial-gradient(700px 500px at 2% 104%, rgba(108,108,229,.16), transparent 64%);
  background-attachment:fixed;
  color:var(--fog);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(159,182,198,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(159,182,198,.05) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 46% 26%,#000 12%,transparent 76%);
  mask-image:radial-gradient(circle at 46% 26%,#000 12%,transparent 76%);
}

/* ---------- typography ---------- */
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.2;color:var(--fog)}
h1{font-size:clamp(34px,5.6vw,74px)}
h2{font-size:clamp(24px,3.2vw,40px)}
h3{font-size:clamp(18px,1.9vw,24px)}
h4{font-size:clamp(16px,1.4vw,19px)}
.display{font-size:clamp(38px,7vw,88px);line-height:1.08;letter-spacing:-.03em}
.num,.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- layout utils ---------- */
main{
  position:relative;
  z-index:1;
  display:block;
  padding-top:var(--topbar-h);
  padding-bottom:clamp(48px,7vw,110px);
  scroll-margin-top:calc(var(--topbar-h) + 14px);
}
.wrap{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:clamp(18px,3.4vw,46px);
}
.wrap--wide{max-width:1420px}
.grid{display:grid;gap:clamp(16px,2vw,26px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(238px,1fr))}
.rule{height:1px;border:0;background:linear-gradient(90deg,transparent,var(--line),transparent)}
.prose{max-width:34em;font-size:16.5px;line-height:1.85;color:rgba(232,241,247,.86)}
.prose p+p{margin-top:1.1em}
.lede{max-width:30em;font-size:clamp(17px,1.6vw,20px);line-height:1.8;color:rgba(232,241,247,.92)}
.muted{color:var(--mute)}
.accent{color:var(--cyan)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  letter-spacing:.04em;
  cursor:pointer;
  transition:transform .25s var(--ease),background-color .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.btn--primary{
  background:linear-gradient(120deg,var(--cyan),#1CB6D6);
  color:#04131F;
  box-shadow:0 10px 30px -12px rgba(34,211,238,.6);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px -14px rgba(34,211,238,.78)}
.btn--ghost{
  background:transparent;
  color:var(--fog);
  border-color:rgba(159,182,198,.4);
}
.btn--ghost:hover{color:var(--cyan-soft);border-color:var(--cyan);background:rgba(34,211,238,.08)}
.btn--warn{background:var(--coral);color:#1B0700;box-shadow:0 10px 30px -14px rgba(255,107,74,.7)}
.btn--warn:hover{transform:translateY(-2px)}

/* ---------- tags / panels / cards ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--cyan-soft);
}
.tag::before{content:"";width:22px;height:1px;background:currentColor;opacity:.72;flex:0 0 auto}
.tag--amber{color:var(--amber)}
.tag--coral{color:var(--coral)}

.panel{
  position:relative;
  padding:clamp(18px,2.4vw,30px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(14,44,68,.92),rgba(9,30,47,.92));
}
.panel--cyan{border-color:var(--line-strong)}

.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:clamp(16px,2vw,26px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(14,44,68,.86),rgba(8,26,41,.92));
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 22px 46px -26px rgba(34,211,238,.55);
}

/* ---------- breadcrumb ---------- */
.breadcrumb{font-size:12.5px;letter-spacing:.06em;color:var(--mute)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.breadcrumb li{display:inline-flex;align-items:center;gap:10px}
.breadcrumb li+li::before{content:"/";color:rgba(159,182,198,.45)}
.breadcrumb a{transition:color .22s var(--ease)}
.breadcrumb a:hover{color:var(--cyan)}

/* ---------- figure ---------- */
.figure{
  position:relative;
  display:block;
  width:100%;
  overflow:hidden;
  border-radius:var(--radius);
  border:1px solid var(--line);
  isolation:isolate;
  background:
    linear-gradient(140deg,rgba(34,211,238,.16),rgba(14,44,68,.92) 46%,rgba(7,28,46,1));
}
.figure::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(34,211,238,.14) 0 1px,transparent 1px 34px);
  opacity:.45;
}
.figure > img{width:100%;height:100%;object-fit:cover}
.figure--21x9{aspect-ratio:21/9}
.figure--16x9{aspect-ratio:16/9}
.figure--4x3{aspect-ratio:4/3}
.figure--1x1{aspect-ratio:1/1}
.figure--tall{aspect-ratio:3/4}
.figure__cap{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:14px 16px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--cyan-soft);
  background:linear-gradient(180deg,transparent,rgba(4,16,26,.9));
}

/* ==========================================================
   头部：轨道 + 状态条
   ========================================================== */
.site-header{position:relative;z-index:50}

.skip-link{
  position:fixed;
  top:10px;
  left:calc(var(--rail-w) + 14px);
  z-index:90;
  padding:10px 18px;
  border-radius:999px;
  background:var(--cyan);
  color:#04131F;
  font-size:14px;
  font-weight:700;
  transform:translateY(-190%);
  transition:transform .22s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

.topbar{
  position:fixed;
  top:0;
  left:var(--rail-w);
  right:0;
  z-index:40;
  height:var(--topbar-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:0 clamp(16px,3vw,34px);
  background:rgba(11,35,56,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--mute);
}
.topbar__status{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.topbar__dot{
  flex:0 0 auto;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--cyan);
  animation:leyu-pulse 2.4s var(--ease) infinite;
}
@keyframes leyu-pulse{
  0%{box-shadow:0 0 0 0 rgba(34,211,238,.5)}
  70%{box-shadow:0 0 0 10px rgba(34,211,238,0)}
  100%{box-shadow:0 0 0 0 rgba(34,211,238,0)}
}
.topbar__actions{display:flex;align-items:center;gap:14px;min-width:0}
.topbar__cta{
  display:inline-flex;
  align-items:center;
  padding:6px 15px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(34,211,238,.12);
  color:var(--cyan-soft);
  font-weight:700;
  white-space:nowrap;
  transition:background-color .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.topbar__cta:hover{background:rgba(34,211,238,.24);color:#fff;transform:translateY(-1px)}
.topbar__link{
  color:var(--mute);
  white-space:nowrap;
  border-bottom:1px solid transparent;
  transition:color .25s var(--ease),border-color .25s var(--ease);
}
.topbar__link:hover{color:var(--fog);border-bottom-color:var(--cyan)}
.topbar__progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  transform:scaleX(0);
  transform-origin:0 50%;
  pointer-events:none;
}

/* ---------- 左侧品牌轨道 ---------- */
.rail{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  z-index:50;
  width:var(--rail-w);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
  padding:16px 0 18px;
  background:linear-gradient(180deg,#0B2338 0%,#0E2C44 52%,#0A1F32 100%);
  border-right:1px solid var(--line);
}
.rail::after{
  content:"";
  position:absolute;
  top:7%;
  bottom:7%;
  right:0;
  width:1px;
  pointer-events:none;
  background:linear-gradient(180deg,transparent,var(--cyan) 28%,rgba(108,108,229,.7) 74%,transparent);
  opacity:.55;
}
.rail__brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  padding:6px;
  border-radius:14px;
  transition:background-color .25s var(--ease);
}
.rail__brand:hover{background:rgba(34,211,238,.09)}
.rail__mark{
  width:38px;
  height:38px;
  display:grid;
  place-items:center;
  border-radius:12px;
  background:linear-gradient(140deg,var(--cyan),#1B98B6 72%);
  color:#04131F;
  font-size:18px;
  font-weight:800;
  box-shadow:0 8px 24px -10px rgba(34,211,238,.7);
}
.rail__name{
  writing-mode:vertical-rl;
  text-orientation:upright;
  font-size:12px;
  font-weight:600;
  letter-spacing:.24em;
  color:var(--mute);
}

/* ---------- 移动菜单按钮 ---------- */
.nav-toggle{
  display:none;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:rgba(34,211,238,.1);
  color:var(--cyan-soft);
  cursor:pointer;
  transition:background-color .25s var(--ease),border-color .25s var(--ease);
}
.nav-toggle:hover{background:rgba(34,211,238,.2)}
.nav-toggle__bar{
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .26s var(--ease),opacity .2s var(--ease);
}
.nav-toggle__text{font-size:9px;font-weight:700;letter-spacing:.16em}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){transform:translateY(-3px) rotate(-45deg)}

/* ---------- 导航 ---------- */
.rail__nav{
  flex:1 1 auto;
  min-height:0;
  width:100%;
  overflow-y:auto;
  overscroll-behavior:contain;
  padding:6px 0;
  scrollbar-width:thin;
}
.rail__list{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:4px;
}
.rail__link{
  position:relative;
  display:block;
  writing-mode:vertical-rl;
  text-orientation:upright;
  padding:12px 6px;
  border-radius:10px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--mute);
  transition:color .25s var(--ease),background-color .25s var(--ease);
}
.rail__link:hover{color:var(--fog);background:rgba(34,211,238,.08)}
.rail__link[aria-current="page"]{color:var(--cyan)}
.rail__link[aria-current="page"]::before{
  content:"";
  position:absolute;
  left:-6px;
  top:8px;
  bottom:8px;
  width:2px;
  border-radius:2px;
  background:var(--cyan);
  box-shadow:0 0 12px rgba(34,211,238,.8);
}

.rail__meta{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.06em;
  color:var(--mute);
}
.rail__dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 10px rgba(34,211,238,.9);
}
.rail__meta-text{font-variant-numeric:tabular-nums}

.nav-scrim{
  position:fixed;
  inset:0;
  z-index:45;
  border:0;
  padding:0;
  background:rgba(4,16,26,.74);
  -webkit-backdrop-filter:blur(3px);
  backdrop-filter:blur(3px);
  opacity:0;
  visibility:hidden;
  cursor:pointer;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.nav-scrim[data-open]{opacity:1;visibility:visible}
html[data-nav-locked]{overflow:hidden}

/* ==========================================================
   页脚
   ========================================================== */
.site-footer{
  position:relative;
  z-index:1;
  padding:clamp(44px,6vw,84px) 0 26px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,35,56,.62),rgba(6,23,38,.96));
}
.footer__inner{
  display:grid;
  grid-template-columns:minmax(240px,1.5fr) repeat(3,minmax(0,1fr));
  gap:clamp(26px,3.4vw,48px);
  align-items:start;
}
.footer__brand{min-width:0}
.footer__logo{display:inline-flex;align-items:center;gap:12px}
.footer__mark{
  width:36px;
  height:36px;
  display:grid;
  place-items:center;
  border-radius:11px;
  background:linear-gradient(140deg,var(--cyan),#1B98B6 72%);
  color:#04131F;
  font-size:17px;
  font-weight:800;
}
.footer__word{font-size:19px;font-weight:800;letter-spacing:.02em}
.footer__motto{
  margin-top:16px;
  font-size:clamp(17px,1.4vw,20px);
  font-weight:700;
  letter-spacing:.02em;
  color:var(--cyan-soft);
}
.footer__note{
  margin-top:12px;
  max-width:32em;
  font-size:13px;
  line-height:1.8;
  color:var(--mute);
}
.footer__col{min-width:0}
.footer__title{
  margin-bottom:16px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--mute);
}
.footer__list{display:flex;flex-direction:column;gap:11px;font-size:14.5px}
.footer__list a{
  color:rgba(232,241,247,.82);
  border-bottom:1px solid transparent;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.footer__list a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer__list--plain li{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.02em;
  color:var(--mute);
  word-break:break-word;
}
.footer__icp{
  margin-top:18px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--mute);
}
.footer__base{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 24px;
  margin-top:clamp(30px,4vw,54px);
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--mute);
}

/* ==========================================================
   动效
   ========================================================== */
[data-reveal]{transition:opacity .62s var(--ease),transform .62s var(--ease)}
html[data-reveal-ready] [data-reveal]:not([data-revealed]){
  opacity:0;
  transform:translateY(16px);
}

/* ==========================================================
   响应式
   ========================================================== */
@media (max-width:1100px){
  .footer__inner{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:900px){
  :root{--rail-w:60px;--topbar-h:44px}

  .rail{gap:10px;padding:12px 0 14px}
  .rail__mark{width:34px;height:34px;font-size:16px;border-radius:10px}
  .rail__name,.rail__meta{display:none}
  .nav-toggle{display:flex}

  .topbar{font-size:11.5px;padding:0 14px}
  .topbar__actions{gap:10px}

  .rail__nav{
    position:fixed;
    top:0;
    bottom:0;
    left:0;
    z-index:60;
    width:min(82vw,320px);
    flex:none;
    display:block;
    padding:calc(var(--topbar-h) + 22px) 20px 30px;
    overflow-y:auto;
    background:linear-gradient(180deg,#0B2338,#081F33);
    border-right:1px solid var(--line-strong);
    box-shadow:34px 0 70px -34px rgba(0,0,0,.9);
    transform:translateX(-103%);
    transition:transform .36s var(--ease);
  }
  .rail__nav[data-open]{transform:translateX(0)}
  .rail__list{align-items:stretch;gap:4px}
  .rail__link{
    writing-mode:horizontal-tb;
    text-orientation:mixed;
    padding:13px 16px;
    border-radius:12px;
    font-size:16px;
    letter-spacing:.06em;
  }
  .rail__link[aria-current="page"]{background:rgba(34,211,238,.12)}
  .rail__link[aria-current="page"]::before{left:3px;top:11px;bottom:11px;width:3px}

  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:640px){
  body{font-size:15.5px}
  .topbar__link{display:none}
  .topbar__cta{padding:5px 12px;font-size:11.5px}
  .grid--2,.grid--3,.grid--4,.grid--auto{grid-template-columns:1fr}
  .footer__inner{grid-template-columns:1fr}
  .footer__base{flex-direction:column;gap:8px}
}

@media (max-height:720px) and (min-width:901px){
  .rail__name{display:none}
  .rail__link{font-size:12px;padding:9px 5px;letter-spacing:.12em}
}

@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[data-reveal-ready] [data-reveal]:not([data-revealed]){
    opacity:1;
    transform:none;
  }
  .topbar__dot{animation:none}
}