/* ===== 乐鱼赛场 · 共享样式 /assets/site.css ===== */

/* 1. 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;padding:0;}
ul,ol{list-style:none;}
img,svg,video{display:block;max-width:100%;}
button{background:none;border:0;cursor:pointer;font:inherit;color:inherit;}
a{color:inherit;text-decoration:none;}
[hidden]{display:none !important;}

/* 2. 变量 */
:root{
  --ink-900:#041521;
  --ink-800:#0A2236;
  --ink-700:#102F47;
  --cyan:#33E6E6;
  --cyan-soft:#9BF7F7;
  --coral:#FF6A4D;
  --lime:#C9FF3D;
  --paper:#F0E6D2;
  --text:#E8F4F6;
  --muted:#8FB0BD;
  --line:rgba(143,176,189,.18);
  --line-strong:rgba(51,230,230,.32);
  --max:1280px;
  --gutter:clamp(16px,4vw,48px);
  --font-sans:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --radius:3px;
}

body{
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1200px 620px at 88% -12%, rgba(51,230,230,.10), transparent 70%),
    radial-gradient(900px 520px at -12% 18%, rgba(255,106,77,.07), transparent 70%);
  background-repeat:no-repeat;
  color:var(--text);
  font-family:var(--font-sans);
  font-size:clamp(15px,1.6vw,17px);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px;}

/* 3. 排版与工具类 */
h1,h2,h3,h4{font-weight:800;line-height:1.15;letter-spacing:-.01em;}
.ly-mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.03em;}
.ly-rule{height:1px;border:0;background:var(--line);}
.ly-wrap{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter);}
.ly-section{padding-block:clamp(48px,7vw,96px);}
.ly-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--cyan);
}
.ly-chapter{
  display:flex;align-items:baseline;gap:clamp(10px,2vw,18px);
  padding-bottom:12px;border-bottom:1px solid var(--line);flex-wrap:wrap;
}
.ly-chapter__num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1;
  letter-spacing:-.02em;color:var(--paper);
}
.ly-chapter__label{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--cyan);
}

/* 4. 按钮 */
.ly-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:40px;padding:9px 18px;border-radius:var(--radius);
  font-family:var(--font-sans);font-size:14px;font-weight:700;letter-spacing:.04em;
  border:1px solid transparent;transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease;
}
.ly-btn--coral{background:var(--coral);color:#08131C;border-color:var(--coral);}
.ly-btn--coral:hover{background:#FF866D;border-color:#FF866D;}
.ly-btn--ghost{border-color:var(--line-strong);color:var(--cyan-soft);background:rgba(16,47,71,.5);}
.ly-btn--ghost:hover{background:rgba(51,230,230,.14);color:var(--cyan);}
.ly-btn:active{transform:translateY(1px);}

/* 5. 跳过链接 */
.ly-skip{
  position:fixed;top:8px;left:8px;z-index:300;
  padding:10px 16px;border-radius:var(--radius);
  background:var(--cyan);color:#04121B;font-weight:700;font-size:14px;
  transform:translateY(-160%);transition:transform .18s ease;
}
.ly-skip:focus{transform:translateY(0);}

/* 6. 头部 */
.ly-beam{
  display:block;position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--cyan) 30%,var(--coral) 70%,transparent);
  opacity:.9;pointer-events:none;
}
.ly-header{
  position:relative;z-index:80;
  background:linear-gradient(180deg,#061B2B 0%,#041521 78%);
  border-bottom:1px solid rgba(51,230,230,.18);
}
.ly-utility{background:rgba(4,21,33,.62);border-bottom:1px solid rgba(143,176,189,.14);}
.ly-utility__inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:46px;padding-block:6px;
}
.ly-utility__status{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);
}
.ly-nightlight{
  width:8px;height:8px;border-radius:50%;background:var(--lime);
  box-shadow:0 0 0 3px rgba(201,255,61,.16),0 0 12px rgba(201,255,61,.55);
  animation:ly-pulse 2.4s ease-in-out infinite;
}
@keyframes ly-pulse{0%,100%{opacity:1;}50%{opacity:.45;}}
.ly-utility__actions{display:flex;align-items:center;gap:10px;}
.ly-league-switch{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 13px;border:1px solid var(--line-strong);border-radius:999px;
  font-size:13px;font-weight:600;color:var(--cyan-soft);
  background:rgba(16,47,71,.55);transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.ly-league-switch:hover{background:rgba(51,230,230,.16);color:var(--cyan);border-color:var(--cyan);}
.ly-league-switch__dot{
  width:7px;height:7px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 0 2px rgba(51,230,230,.2);
}

.ly-masthead__inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:16px;padding-block:clamp(12px,2vw,20px);
}
.ly-masthead__meta{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--muted);justify-self:start;
}
.ly-masthead__brand{
  display:flex;flex-direction:column;align-items:center;gap:2px;
  justify-self:center;text-align:center;
}
.ly-masthead__name{
  font-size:clamp(24px,3.4vw,36px);font-weight:900;letter-spacing:.06em;line-height:1.1;
  color:var(--text);
}
.ly-masthead__tag{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.32em;
  text-transform:uppercase;color:var(--cyan);
}
.ly-masthead__brand:hover .ly-masthead__name{color:var(--cyan-soft);}

.ly-burger{
  display:none;flex-direction:column;align-items:center;justify-content:center;
  justify-self:end;width:44px;height:44px;padding:0;
  border:1px solid var(--line-strong);border-radius:var(--radius);
  background:var(--ink-800);
}
.ly-burger__bar{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--cyan);
  transition:transform .2s ease,opacity .2s ease;
}
.ly-burger__bar + .ly-burger__bar{margin-top:4px;}
.ly-header[data-open] .ly-burger__bar:nth-child(1){transform:translateY(6px) rotate(45deg);}
.ly-header[data-open] .ly-burger__bar:nth-child(2){opacity:0;}
.ly-header[data-open] .ly-burger__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.ly-nav{border-top:1px solid rgba(143,176,189,.12);}
.ly-nav__list{
  display:flex;flex-wrap:wrap;justify-content:center;
  gap:clamp(14px,3vw,38px);padding-block:10px;
}
.ly-nav__item{list-style:none;}
.ly-nav__link{
  position:relative;display:inline-block;padding:6px 2px;
  font-size:15px;font-weight:500;letter-spacing:.02em;color:var(--muted);
  transition:color .16s ease;
}
.ly-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left center;
  transition:transform .18s ease;
}
.ly-nav__link:hover{color:var(--text);}
.ly-nav__link:hover::after{transform:scaleX(.42);}
.ly-nav__link[aria-current="page"]{color:var(--text);font-weight:700;}
.ly-nav__link[aria-current="page"]::after{transform:scaleX(1);}

/* 7. 页脚 */
.ly-footer{
  position:relative;
  background:linear-gradient(180deg,#03101A 0%,#020B12 100%);
  border-top:1px solid rgba(51,230,230,.16);
  margin-top:clamp(48px,8vw,96px);
}
.ly-footer__signal{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px max(var(--gutter), calc((100% - var(--max)) / 2 + var(--gutter)));
  background:
    repeating-linear-gradient(90deg, rgba(51,230,230,.07) 0 10px, rgba(4,21,33,0) 10px 20px),
    var(--ink-800);
  border-bottom:1px solid rgba(51,230,230,.14);
  font-size:14px;font-weight:600;color:var(--cyan-soft);
  transition:background-color .18s ease,color .18s ease;
}
.ly-footer__signal:hover{color:var(--cyan);background-color:var(--ink-700);}
.ly-footer__signal-text{display:inline-flex;align-items:center;gap:10px;}
.ly-footer__signal-cta{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.12em;
  color:var(--coral);white-space:nowrap;
}
.ly-footer__signal:hover .ly-footer__signal-cta{color:var(--cyan);}

.ly-footer__grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:clamp(24px,4vw,48px);padding-block:clamp(32px,5vw,56px);
}
.ly-footer__brand{display:flex;flex-direction:column;gap:10px;}
.ly-footer__logo{font-size:clamp(20px,2.6vw,26px);font-weight:900;letter-spacing:.06em;color:var(--text);}
.ly-footer__logo:hover{color:var(--cyan);}
.ly-footer__tag{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--cyan);
}
.ly-footer__note{font-size:13px;line-height:1.7;color:var(--muted);max-width:32ch;}
.ly-footer__col{display:block;}
.ly-footer__title{
  font-family:var(--font-mono);font-size:12px;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;color:var(--muted);
  margin-bottom:14px;padding-bottom:8px;border-bottom:1px solid var(--line);
}
.ly-footer__list{display:flex;flex-direction:column;gap:9px;}
.ly-footer__link{
  font-size:15px;color:var(--text);opacity:.86;
  transition:color .16s ease,opacity .16s ease,transform .16s ease;
  display:inline-block;
}
.ly-footer__link:hover{color:var(--cyan);opacity:1;transform:translateX(3px);}
.ly-footer__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 28px;padding-block:22px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.ly-footer__contact{line-height:1.75;max-width:76ch;}
.ly-footer__contact .ly-mono{color:var(--cyan-soft);}
.ly-footer__legal{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  letter-spacing:.04em;color:rgba(143,176,189,.85);
}

/* 8. 通用组件 */
.ly-card{
  position:relative;
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(18px,2.6vw,28px);
}
.ly-card--accent{
  border-color:rgba(51,230,230,.45);
  box-shadow:inset 0 0 0 1px rgba(51,230,230,.12);
  background:linear-gradient(160deg,rgba(51,230,230,.08),rgba(10,34,54,.9) 55%);
}

.ly-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.4vw,28px);}
.ly-col{grid-column:span var(--span,12);min-width:0;}

.ly-crumbs{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);}
.ly-crumbs ol{display:flex;flex-wrap:wrap;gap:6px;list-style:none;}
.ly-crumbs li + li::before{content:"/";margin-right:6px;color:rgba(143,176,189,.5);}
.ly-crumbs a{color:var(--muted);transition:color .16s ease;}
.ly-crumbs a:hover{color:var(--cyan);}
.ly-crumbs [aria-current="page"]{color:var(--text);}

.ly-prose{max-width:68ch;}
.ly-prose > * + *{margin-top:1.05em;}
.ly-prose h2{font-size:clamp(22px,3vw,30px);margin-top:1.9em;color:var(--text);}
.ly-prose h3{font-size:clamp(18px,2.2vw,22px);margin-top:1.5em;color:var(--cyan-soft);}
.ly-prose p{color:var(--text);opacity:.92;}
.ly-prose a{color:var(--cyan);border-bottom:1px solid rgba(51,230,230,.45);}
.ly-prose a:hover{color:var(--cyan-soft);}
.ly-prose ul,.ly-prose ol{padding-left:1.2em;list-style:disc;}
.ly-prose li + li{margin-top:.5em;}
.ly-prose blockquote{
  padding:16px 20px;border-left:3px solid var(--coral);
  background:rgba(16,47,71,.6);color:var(--cyan-soft);border-radius:0 var(--radius) var(--radius) 0;
}

.ly-tabs{display:block;}
.ly-tabs__list{
  display:flex;flex-wrap:wrap;gap:8px;
  border-bottom:1px solid var(--line);padding-bottom:10px;
}
.ly-tabs__tab{
  padding:9px 16px;border:1px solid var(--line);border-radius:var(--radius);
  font-size:14px;font-weight:600;color:var(--muted);background:rgba(16,47,71,.4);
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.ly-tabs__tab:hover{color:var(--text);border-color:var(--line-strong);}
.ly-tabs__tab[aria-selected="true"]{
  background:var(--cyan);border-color:var(--cyan);color:#04121B;
}
.ly-tabs__panel{padding-top:20px;animation:ly-fade .16s ease both;}
@keyframes ly-fade{from{opacity:0;transform:translateY(4px);}to{opacity:1;transform:none;}}

.ly-media{
  position:relative;overflow:hidden;border-radius:var(--radius);
  aspect-ratio:16/9;border:1px solid var(--line-strong);
  background:linear-gradient(135deg,var(--ink-800) 0%,var(--ink-700) 55%,var(--ink-900) 100%);
}
.ly-media--wide{aspect-ratio:21/9;}
.ly-media--tall{aspect-ratio:4/5;}
.ly-media__img{
  width:100%;height:100%;object-fit:cover;
  filter:saturate(.95) contrast(1.06);
}
.ly-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(4,21,33,.28) 0 1px,rgba(4,21,33,0) 1px 3px);
  opacity:.4;
}
.ly-media__tag{
  position:absolute;left:12px;bottom:12px;z-index:2;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan-soft);background:rgba(4,21,33,.78);
  border:1px solid rgba(51,230,230,.34);padding:4px 9px;border-radius:2px;
}

.ly-lamp{
  display:inline-block;width:8px;height:8px;border-radius:50%;
  background:var(--muted);box-shadow:0 0 0 3px rgba(143,176,189,.16);
  vertical-align:middle;
}
.ly-lamp--live{background:var(--lime);box-shadow:0 0 0 3px rgba(201,255,61,.18);}
.ly-lamp--warn{background:var(--coral);box-shadow:0 0 0 3px rgba(255,106,77,.18);}
.ly-lamp--info{background:var(--cyan);box-shadow:0 0 0 3px rgba(51,230,230,.18);}

[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease;}
[data-reveal].is-in{opacity:1;transform:none;}

.ly-progress{
  position:fixed;top:0;left:0;width:100%;height:2px;z-index:200;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--coral));
  pointer-events:none;
}

/* 9. 响应式 */
@media (max-width:1024px){
  .ly-footer__grid{grid-template-columns:1.4fr 1fr 1fr;}
  .ly-footer__brand{grid-column:1 / -1;}
  .ly-footer__note{max-width:60ch;}
}
@media (max-width:900px){
  .ly-grid{gap:18px;}
}
@media (max-width:860px){
  .ly-masthead__inner{grid-template-columns:1fr auto 1fr;padding-block:12px;}
  .ly-masthead__meta{display:none;}
  .ly-burger{display:flex;}
  .ly-nav{display:none;background:var(--ink-800);border-top:1px solid var(--line-strong);}
  .ly-header[data-open] .ly-nav{display:block;}
  .ly-nav__list{flex-direction:column;align-items:stretch;gap:0;padding-block:6px;}
  .ly-nav__link{
    display:block;padding:14px var(--gutter);font-size:17px;
    border-bottom:1px solid rgba(143,176,189,.1);
  }
  .ly-nav__link::after{display:none;}
  .ly-nav__link[aria-current="page"]{
    color:var(--cyan);box-shadow:inset 3px 0 0 var(--cyan);
    background:rgba(51,230,230,.07);
  }
  .ly-utility__inner{flex-wrap:wrap;row-gap:8px;}
  .ly-utility__status{font-size:11px;letter-spacing:.1em;}
  .ly-btn{font-size:13px;min-height:36px;padding:7px 13px;}
  .ly-league-switch{font-size:12px;padding:6px 11px;}
  .ly-footer__grid{grid-template-columns:1fr 1fr;}
  .ly-footer__base{flex-direction:column;align-items:flex-start;}
}
@media (max-width:760px){
  .ly-col{grid-column:span 12;}
}
@media (max-width:560px){
  .ly-footer__grid{grid-template-columns:1fr;gap:26px;}
  .ly-footer__title{margin-bottom:10px;}
  .ly-footer__signal{font-size:13px;padding-block:14px;}
  .ly-footer__signal-cta{font-size:12px;}
}

/* 10. 可访问性动效降级 */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none;}
  .ly-nightlight{animation:none;}
}