/* ===== 乐思体育安装 / site.css ===== */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;background-color:#0A1626}
body,figure,blockquote,dl,dd,h1,h2,h3,h4,p{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
[hidden]{display:none !important}

:root{
  --ink:#0A1626;
  --ink-2:#10233A;
  --line:#14304D;
  --edge:#1E3A57;
  --cyan:#22D3EE;
  --cyan-soft:#7FF3FF;
  --flare:#FF4D2E;
  --mint:#39FF88;
  --paper:#F4F8FB;
  --mist:#8FA6BF;
  --body-text:#CFDCEA;

  --font-head:"PingFang SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-data:ui-monospace,"JetBrains Mono","Roboto Mono",SFMono-Regular,Menlo,Consolas,monospace;

  --shell:1280px;
  --gutter:clamp(18px,4vw,48px);
  --bw:2px;
  --shadow:4px 4px 0 var(--edge);
  --shadow-lift:8px 8px 0 var(--edge);
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:76px;
}

@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}

body{
  min-height:100vh;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--paper);
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 640px at 84% -8%, rgba(34,211,238,.16), transparent 62%),
    radial-gradient(820px 520px at 2% 6%, rgba(255,77,46,.09), transparent 60%),
    repeating-linear-gradient(90deg, rgba(20,48,77,.30) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(20,48,77,.30) 0 1px, transparent 1px 96px);
  background-attachment:fixed;
  overflow-x:hidden;
}

::selection{background:var(--cyan);color:var(--ink)}

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

body.is-nav-open{overflow:hidden}

/* ---------- 跳转链 ---------- */
.ls-skip{
  position:absolute;
  left:var(--gutter);
  top:-120px;
  z-index:300;
  padding:10px 16px;
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.08em;
  background:var(--cyan);
  color:var(--ink);
  border:var(--bw) solid var(--ink);
  transition:top .16s var(--ease);
}
.ls-skip:focus{top:12px}

/* ---------- 头部 ---------- */
.ls-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(10,22,38,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:var(--bw) solid transparent;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.ls-header[data-stuck]{
  border-bottom-color:var(--edge);
  background:rgba(10,22,38,.96);
}

.ls-header__bar{
  display:flex;
  align-items:center;
  gap:clamp(16px,3vw,40px);
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--gutter);
  min-height:var(--header-h);
  transition:min-height .2s var(--ease);
}
.ls-header[data-stuck] .ls-header__bar{min-height:60px}

.ls-progress{
  position:absolute;
  left:0;
  bottom:-2px;
  width:100%;
  height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--flare));
  pointer-events:none;
}

.ls-brand{
  display:inline-flex;
  align-items:baseline;
  gap:10px;
  flex:0 0 auto;
  padding:6px 0;
}
.ls-brand__mark{
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(20px,2.4vw,26px);
  line-height:1;
  letter-spacing:-.02em;
  font-stretch:condensed;
  color:var(--paper);
  transition:color .16s var(--ease);
}
.ls-brand:hover .ls-brand__mark{color:var(--cyan-soft)}
.ls-brand__suffix{
  padding-left:10px;
  border-left:var(--bw) solid var(--edge);
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--cyan);
}
.ls-brand--footer{align-items:baseline;padding:0}

.ls-nav{
  flex:1 1 auto;
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:clamp(12px,2vw,28px);
  min-width:0;
}
.ls-nav__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:flex-end;
  gap:clamp(2px,.9vw,14px);
}
.ls-nav__link{
  display:inline-block;
  padding:8px 6px;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--mist);
  border-bottom:var(--bw) solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease),background .16s var(--ease);
}
.ls-nav__link:hover{color:var(--paper)}
.ls-nav__link[aria-current="page"]{
  color:var(--cyan);
  border-bottom-color:var(--cyan);
}
.ls-nav__link:focus-visible{
  background:var(--paper);
  color:var(--ink);
  outline:var(--bw) solid var(--cyan);
  outline-offset:2px;
}

.ls-nav__quick{
  display:flex;
  align-items:center;
  gap:8px;
  padding-left:clamp(10px,1.6vw,20px);
  border-left:var(--bw) solid var(--edge);
}
.ls-quick{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--paper);
  background:var(--ink-2);
  border:var(--bw) solid var(--edge);
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),border-color .16s var(--ease),background .16s var(--ease),color .16s var(--ease);
}
.ls-quick:hover{
  transform:translate(-2px,-2px);
  box-shadow:var(--shadow);
  border-color:var(--cyan);
  color:var(--cyan-soft);
}
.ls-quick__arrow{
  font-family:var(--font-data);
  color:var(--cyan);
}
.ls-quick--cta{
  color:var(--ink);
  font-weight:700;
  background:var(--cyan);
  border-color:var(--cyan);
}
.ls-quick--cta:hover{
  background:var(--cyan-soft);
  border-color:var(--cyan-soft);
  color:var(--ink);
}
.ls-quick--cta .ls-quick__arrow{color:var(--ink)}

.ls-burger{
  display:none;
  position:relative;
  z-index:140;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  background:var(--ink-2);
  border:var(--bw) solid var(--edge);
  color:var(--paper);
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.1em;
}
.ls-burger__bars{
  position:relative;
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
}
.ls-burger__bars::before,
.ls-burger__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:currentColor;
  transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.ls-burger__bars::before{top:-6px}
.ls-burger__bars::after{top:6px}
.ls-burger[aria-expanded="true"] .ls-burger__bars{background:transparent}
.ls-burger[aria-expanded="true"] .ls-burger__bars::before{transform:translateY(6px) rotate(45deg)}
.ls-burger[aria-expanded="true"] .ls-burger__bars::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- 页脚 ---------- */
.ls-footer{
  margin-top:clamp(64px,10vw,140px);
  border-top:var(--bw) solid var(--cyan);
  background:linear-gradient(180deg,rgba(16,35,58,.9),rgba(10,22,38,.98));
}
.ls-footer__inner{
  display:grid;
  grid-template-columns:minmax(220px,1.1fr) minmax(0,2fr) minmax(240px,1.1fr);
  gap:clamp(24px,4vw,52px);
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:clamp(40px,6vw,72px) var(--gutter);
}
.ls-footer__brand{display:grid;gap:14px;align-content:start}
.ls-footer__note{
  max-width:34ch;
  padding-left:12px;
  border-left:var(--bw) solid var(--edge);
  font-size:13px;
  line-height:1.7;
  color:var(--mist);
}
.ls-footer__contact{
  display:grid;
  gap:6px;
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--mist);
}
.ls-footer__groups{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,3vw,36px);
}
.ls-footer__grouptitle{
  margin-bottom:14px;
  padding-bottom:8px;
  border-bottom:var(--bw) solid var(--line);
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--cyan);
}
.ls-footer__links{display:grid;gap:10px}
.ls-footer__link{
  font-size:14px;
  color:var(--mist);
  transition:color .16s var(--ease),transform .16s var(--ease);
}
.ls-footer__link:hover{color:var(--paper);transform:translateX(3px)}
.ls-footer__meta{
  display:grid;
  gap:12px;
  align-content:start;
  font-size:12px;
  line-height:1.8;
  color:var(--mist);
}
.ls-footer__addr{
  padding-left:12px;
  border-left:var(--bw) solid var(--edge);
}
.ls-footer__icp{
  font-family:var(--font-data);
  letter-spacing:.06em;
  color:var(--paper);
}
.ls-footer__base{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 24px;
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:20px var(--gutter) 30px;
  border-top:1px solid var(--line);
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--mist);
}

/* ---------- 容器与排版 ---------- */
.ls-shell{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding-inline:var(--gutter);
}
.ls-shell--narrow{max-width:880px}

.ls-h1{
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(2.6rem,6vw,5.5rem);
  line-height:.94;
  letter-spacing:-.02em;
  font-stretch:condensed;
  text-wrap:balance;
}
.ls-h2{
  font-family:var(--font-head);
  font-weight:800;
  font-size:clamp(1.5rem,2.6vw,2.6rem);
  line-height:1.08;
  letter-spacing:-.02em;
  font-stretch:condensed;
}
.ls-h3{
  font-family:var(--font-head);
  font-weight:800;
  font-size:clamp(1.05rem,1.5vw,1.3rem);
  line-height:1.3;
  letter-spacing:-.01em;
}
.ls-lede{
  max-width:62ch;
  font-size:clamp(1rem,1.4vw,1.15rem);
  line-height:1.7;
  color:var(--mist);
}
.ls-p{
  max-width:62ch;
  color:var(--body-text);
}
.ls-label{
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--mist);
}
.ls-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--cyan);
}
.ls-num{
  font-family:var(--font-data);
  font-weight:600;
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
}
.ls-code{
  font-family:var(--font-data);
  font-size:.9em;
  padding:2px 6px;
  background:var(--ink-2);
  border:1px solid var(--line);
  color:var(--cyan-soft);
}

.ls-sec{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:14px;
  padding-bottom:14px;
  border-bottom:var(--bw) solid var(--edge);
}
.ls-sec__idx{
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--cyan);
}
.ls-rule{
  height:var(--bw);
  border:0;
  margin:0;
  background:var(--edge);
}

.ls-stack > * + *{margin-top:var(--gap,1rem)}
.ls-inline{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
}
.ls-cta-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:clamp(18px,2.6vw,30px);
}

/* ---------- 栅格与侧栏轴 ---------- */
.ls-grid{display:grid;gap:clamp(18px,2.4vw,32px)}
.ls-grid--split{grid-template-columns:minmax(240px,4fr) minmax(0,8fr)}
.ls-grid--cards{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.ls-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

.ls-rail{
  position:sticky;
  top:calc(var(--header-h) + 16px);
  align-self:start;
  padding-top:14px;
  border-top:var(--bw) solid var(--cyan);
}
.ls-rail__item{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding:10px 0;
  border-bottom:1px solid var(--line);
  font-size:14px;
  color:var(--mist);
  transition:color .16s var(--ease),padding-left .16s var(--ease);
}
.ls-rail__item:hover,
.ls-rail__item[aria-current="page"]{color:var(--paper);padding-left:6px}

/* ---------- 卡片 ---------- */
.ls-card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:clamp(16px,2vw,22px);
  background:var(--ink-2);
  border:var(--bw) solid var(--edge);
  box-shadow:var(--shadow);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.ls-card:hover,
.ls-card:focus-within{
  transform:translate(-4px,-4px);
  box-shadow:var(--shadow-lift);
  border-color:var(--cyan);
}
.ls-card__meta{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  opacity:0;
  transform:translateY(6px);
  transition:opacity .18s var(--ease),transform .18s var(--ease);
}
.ls-card:hover .ls-card__meta,
.ls-card:focus-within .ls-card__meta{opacity:1;transform:none}

.ls-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 8px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist);
  background:var(--ink-2);
  border:1px solid var(--line);
}
.ls-tag--cyan{color:var(--cyan);border-color:rgba(34,211,238,.42)}
.ls-tag--flare{color:var(--flare);border-color:rgba(255,77,46,.44)}
.ls-tag--mint{color:var(--mint);border-color:rgba(57,255,136,.42)}

/* ---------- 按钮 ---------- */
.ls-btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 22px;
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--ink);
  background:var(--cyan);
  border:var(--bw) solid var(--cyan);
  box-shadow:var(--shadow);
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.ls-btn:hover{
  transform:translate(2px,2px);
  box-shadow:0 0 0 var(--edge);
}
.ls-btn--ghost{
  color:var(--paper);
  background:transparent;
  border-color:var(--edge);
  box-shadow:var(--shadow);
}
.ls-btn--ghost:hover{
  background:var(--ink-2);
  border-color:var(--cyan);
  color:var(--cyan-soft);
  box-shadow:2px 2px 0 var(--edge);
}
.ls-btn--flare{
  color:#FFFFFF;
  background:var(--flare);
  border-color:var(--flare);
}

/* ---------- 面包屑与旁注 ---------- */
.ls-crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist);
}
.ls-crumbs a{transition:color .16s var(--ease)}
.ls-crumbs a:hover{color:var(--cyan)}
.ls-crumbs__sep{color:var(--line)}
.ls-crumbs [aria-current="page"]{color:var(--paper)}

.ls-note{
  max-width:34ch;
  padding:2px 0 2px 14px;
  border-left:var(--bw) solid var(--edge);
  font-size:13px;
  line-height:1.7;
  color:var(--mist);
}

/* ---------- 刷新状态点 ---------- */
.ls-pulse{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 10px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist);
  background:var(--ink-2);
  border:1px solid var(--line);
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.ls-pulse:hover{border-color:var(--mint);color:var(--paper)}
.ls-pulse__dot{
  flex:0 0 auto;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--mint);
  animation:ls-breath 1.6s ease-out infinite;
}
.ls-pulse__text{white-space:nowrap}
.ls-pulse__log{
  display:block;
  margin-top:8px;
  padding-left:12px;
  border-left:var(--bw) solid var(--edge);
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--mist);
}
@keyframes ls-breath{
  0%{box-shadow:0 0 0 0 rgba(57,255,136,.55)}
  70%{box-shadow:0 0 0 10px rgba(57,255,136,0)}
  100%{box-shadow:0 0 0 0 rgba(57,255,136,0)}
}

/* ---------- 图片容器 ---------- */
.ls-figure{
  position:relative;
  display:block;
  margin:0;
  overflow:hidden;
  background:var(--ink-2);
  border:var(--bw) solid var(--edge);
  box-shadow:var(--shadow);
}
.ls-figure img,
.ls-figure__img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:16/9;
}
.ls-figure--4x3 img,
.ls-figure--4x3 .ls-figure__img{aspect-ratio:4/3}
.ls-figure--1x1 img,
.ls-figure--1x1 .ls-figure__img{aspect-ratio:1/1}
.ls-figure--tilt{transform:rotate(-1.6deg)}
.ls-figure--wide{grid-column:1 / -1}
.ls-figure__cap{
  position:absolute;
  left:0;
  bottom:0;
  padding:8px 12px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--paper);
  background:rgba(10,22,38,.88);
  border-top:var(--bw) solid var(--cyan);
}
.ls-figure--ph{
  display:grid;
  place-items:center;
  aspect-ratio:16/9;
  color:var(--mist);
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.1em;
  background-image:
    linear-gradient(140deg,rgba(34,211,238,.20),rgba(10,22,38,.92) 58%),
    repeating-linear-gradient(135deg,rgba(30,58,87,.55) 0 2px,transparent 2px 10px);
}

/* ---------- 显现 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(10px);
  transition:opacity .4s var(--ease),transform .4s var(--ease);
}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .ls-grid--split{grid-template-columns:minmax(200px,3fr) minmax(0,7fr)}
  .ls-footer__inner{grid-template-columns:minmax(0,1fr) minmax(0,1.4fr)}
  .ls-footer__groups{grid-column:1 / -1;order:-1}
}

@media (max-width:980px){
  .ls-grid--split,
  .ls-grid--3{grid-template-columns:minmax(0,1fr)}
  .ls-rail{position:static;top:auto}
}

@media (max-width:900px){
  :root{--header-h:64px}

  .ls-burger{display:inline-flex}

  .ls-nav{
    position:fixed;
    inset:0;
    z-index:130;
    display:none;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    padding:calc(var(--header-h) + 24px) var(--gutter) 48px;
    overflow-y:auto;
    background:var(--ink);
    border-left:var(--bw) solid var(--edge);
  }
  .ls-nav[data-open]{display:flex}
  .ls-nav__list{
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    width:100%;
  }
  .ls-nav__list li{border-bottom:var(--bw) solid var(--line)}
  .ls-nav__link{
    display:block;
    padding:18px 0;
    font-family:var(--font-head);
    font-weight:800;
    font-size:clamp(24px,7vw,34px);
    line-height:1.1;
    letter-spacing:-.02em;
    color:var(--paper);
    border-bottom:0;
  }
  .ls-nav__link[aria-current="page"]{color:var(--cyan);border-bottom:0}
  .ls-nav__link:focus-visible{background:var(--paper);color:var(--ink)}
  .ls-nav__quick{
    flex-direction:column;
    align-items:stretch;
    gap:10px;
    margin-top:28px;
    padding-left:0;
    border-left:0;
  }
  .ls-quick{justify-content:center;padding:14px;font-size:12px}
}

@media (max-width:640px){
  body{
    background-image:
      radial-gradient(700px 480px at 88% -6%, rgba(34,211,238,.16), transparent 62%),
      radial-gradient(560px 420px at 0% 4%, rgba(255,77,46,.09), transparent 60%),
      repeating-linear-gradient(90deg, rgba(20,48,77,.28) 0 1px, transparent 1px 64px),
      repeating-linear-gradient(0deg, rgba(20,48,77,.28) 0 1px, transparent 1px 64px);
  }
  .ls-footer__inner{grid-template-columns:minmax(0,1fr)}
  .ls-footer__groups{grid-template-columns:minmax(0,1fr);gap:22px}
  .ls-footer__base{flex-direction:column;align-items:flex-start}
  .ls-figure--tilt{transform:none}
}

@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html{scroll-behavior:auto}
  [data-reveal]{opacity:1;transform:none}
  .ls-card__meta{opacity:1;transform:none}
  .ls-pulse__dot{animation:none}
  .ls-card:hover,
  .ls-card:focus-within{transform:none}
  .ls-btn:hover{transform:none}
  .ls-quick:hover{transform:none}
  .ls-footer__link:hover{transform:none}
}