/* =========================================================
   LM体育中文站 — 共享外壳样式 /assets/site.css
   ========================================================= */

:root{
  --ink:#0B1F17;
  --carbon:#111514;
  --moss:#17352A;
  --lime:#C8FF3D;
  --signal:#FF6B2C;
  --steel:#9DB4C4;
  --bone:#F3F0E4;
  --slate:#3C4742;
  --clay:#B97152;
  --deep:#07110D;

  --line:rgba(157,180,196,.22);
  --line-soft:rgba(157,180,196,.12);

  --rail-w:192px;
  --bar-h:60px;
  --gutter:clamp(16px,3vw,40px);
  --maxw:1360px;

  --font-display:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  --font-serif:"Noto Serif SC",Georgia,"Songti SC",serif;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding-top:var(--bar-h);
  padding-left:var(--rail-w);
  background:var(--ink);
  color:var(--bone);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.7;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.06;
  letter-spacing:-.015em;
}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img,svg,video{display:block;max-width:100%;}
img{height:auto;}
button{font:inherit;color:inherit;}
table{border-collapse:collapse;width:100%;}
a{color:var(--lime);}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:2px;}

/* ---------- 排版基础 ---------- */
.prose{max-width:68ch;}
.prose p{margin:0 0 1.15em;}
.prose h2,.prose h3{margin:1.6em 0 .6em;color:var(--bone);}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;
  color:var(--steel);margin:0 0 14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--clay);}
.lede{
  font-size:clamp(16px,1.35vw,19px);
  line-height:1.78;
  color:rgba(243,240,228,.86);
  max-width:62ch;
}
.tag{
  display:inline-block;padding:4px 9px;border-radius:2px;
  border:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:10px;font-weight:600;
  letter-spacing:.13em;text-transform:uppercase;color:var(--steel);
}
.tag--signal{border-color:rgba(255,107,44,.5);color:var(--signal);}
.tag--clay{border-color:rgba(185,113,82,.55);color:var(--clay);}

/* ---------- 容器与网格 ---------- */
.container{
  width:100%;max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.container--wide{max-width:1600px;}
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gutter);
}
@media (max-width:899px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));}
}
@media (max-width:599px){
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr));}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 14px;border:1px solid transparent;border-radius:2px;
  font-family:var(--font-body);font-size:13px;font-weight:600;
  line-height:1;letter-spacing:.02em;text-decoration:none;
  white-space:nowrap;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn--lime{background:var(--lime);color:var(--deep);}
.btn--lime:hover{background:#d9ff72;}
.btn--ghost{background:transparent;color:var(--steel);border-color:var(--line);}
.btn--ghost:hover{color:var(--bone);border-color:var(--steel);background:rgba(23,53,42,.6);}
.btn--signal{background:var(--signal);color:#170900;}
.btn--signal:hover{background:#ff824d;}
.btn--lg{font-size:15px;padding:14px 22px;}

.chip{
  display:inline-flex;align-items:center;
  padding:7px 12px;border-radius:999px;
  border:1px solid var(--line);
  font-size:12px;font-weight:500;color:var(--steel);
  text-decoration:none;
  transition:color .16s ease,border-color .16s ease;
}
.chip:hover{color:var(--bone);border-color:var(--steel);}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;top:10px;left:50%;z-index:999;
  transform:translate(-50%,-240%);
  padding:11px 20px;border-radius:2px;
  background:var(--lime);color:var(--deep);
  font-size:13px;font-weight:700;text-decoration:none;
  transition:transform .16s ease;
}
.skip-link:focus{transform:translate(-50%,0);}

/* =========================================================
   页头：L 形框架
   ========================================================= */
.site-header{position:relative;z-index:120;}

.site-header__bar{
  position:fixed;
  top:0;right:0;bottom:auto;left:var(--rail-w);
  height:var(--bar-h);
  display:flex;align-items:center;gap:14px;
  padding:0 var(--gutter);
  background:rgba(7,17,13,.96);
  border-bottom:1px solid var(--line);
  z-index:120;
}
.brand{
  display:flex;align-items:center;gap:10px;
  text-decoration:none;color:var(--bone);
  flex:0 0 auto;
}
.brand__mark{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:34px;padding:6px 7px;border-radius:2px;
  background:var(--lime);color:var(--deep);
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  letter-spacing:.04em;line-height:1;
}
.brand__text{display:flex;flex-direction:column;gap:2px;}
.brand__name{
  font-family:var(--font-display);font-size:19px;font-weight:700;
  line-height:1;letter-spacing:.02em;color:var(--bone);
}
.brand__sub{
  font-family:var(--font-mono);font-size:10px;font-weight:500;
  letter-spacing:.13em;color:var(--steel);line-height:1.2;
}
.site-header__stat{
  display:inline-flex;align-items:center;gap:8px;
  margin:0 0 0 6px;padding-left:16px;
  border-left:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.09em;color:var(--steel);white-space:nowrap;
}
.site-header__dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 3px rgba(200,255,61,.16);
  flex:0 0 auto;
}
.quick-actions{
  display:flex;align-items:center;gap:8px;
  margin-left:auto;
}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:8px 12px;border-radius:2px;
  background:transparent;border:1px solid var(--line);
  color:var(--bone);cursor:pointer;
}
.nav-toggle__bars{
  position:relative;display:block;width:16px;height:10px;flex:0 0 auto;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;
  background:currentColor;
  transition:transform .2s ease;
}
.nav-toggle__bars::before{top:0;}
.nav-toggle__bars::after{bottom:0;}
.nav-toggle__label{
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.14em;
}
.site-header[data-open] .nav-toggle__bars::before{transform:translateY(4px) rotate(45deg);}
.site-header[data-open] .nav-toggle__bars::after{transform:translateY(-4px) rotate(-45deg);}

/* 左侧通高窄轨 */
.site-nav{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--rail-w);
  display:flex;flex-direction:column;justify-content:space-between;
  padding:calc(var(--bar-h) + 26px) 14px 22px;
  background:linear-gradient(180deg,var(--deep) 0%,var(--ink) 52%,var(--ink) 100%);
  border-right:1px solid var(--line);
  overflow-y:auto;
  z-index:130;
}
.site-nav__title{
  margin:0 0 14px 10px;
  font-family:var(--font-mono);font-size:10px;font-weight:600;
  letter-spacing:.22em;text-transform:uppercase;
  color:rgba(157,180,196,.6);
}
.site-nav__list{display:flex;flex-direction:column;gap:2px;}
.site-nav__link{
  display:flex;align-items:baseline;gap:10px;
  padding:11px 10px;border-radius:2px;
  border-left:2px solid transparent;
  color:rgba(243,240,228,.74);
  font-size:14px;font-weight:500;line-height:1.35;
  text-decoration:none;
  transition:color .16s ease,background-color .16s ease,border-color .16s ease;
}
.site-nav__idx{
  font-family:var(--font-mono);font-size:10px;font-weight:500;
  letter-spacing:.06em;color:rgba(157,180,196,.55);
}
.site-nav__label{flex:1 1 auto;}
.site-nav__link:hover{
  color:var(--bone);
  background:rgba(23,53,42,.85);
  border-left-color:rgba(200,255,61,.45);
}
.site-nav__link[aria-current="page"]{
  background:var(--lime);
  color:var(--deep);
  border-left-color:var(--lime);
  font-weight:700;
}
.site-nav__link[aria-current="page"] .site-nav__idx{color:rgba(7,17,13,.62);}

.site-nav__quick{display:none;flex-wrap:wrap;gap:8px;margin-top:18px;}

.site-nav__side{margin-top:24px;padding-top:16px;border-top:1px solid var(--line-soft);}
.site-nav__note{
  margin:0 0 10px 10px;
  font-size:11px;line-height:1.65;
  color:rgba(157,180,196,.72);
}
.site-nav__cta{
  display:block;padding:10px;
  border:1px solid var(--line);border-radius:2px;
  text-align:center;text-decoration:none;
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.12em;color:var(--lime);
  transition:background-color .16s ease,border-color .16s ease;
}
.site-nav__cta:hover{background:rgba(200,255,61,.1);border-color:var(--lime);}

@media (max-width:1279px) and (min-width:1080px){
  :root{--rail-w:168px;--gutter:clamp(14px,2vw,26px);}
  .site-nav__link{font-size:13px;padding:10px 8px;}
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  padding:clamp(40px,6vw,72px) var(--gutter) 26px;
  background:var(--carbon);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:var(--gutter);
  width:76px;height:2px;background:var(--lime);
}
.site-footer__main{
  display:grid;
  grid-template-columns:minmax(220px,1.05fr) minmax(0,2fr) minmax(200px,1fr);
  gap:clamp(24px,4vw,56px);
  max-width:var(--maxw);
  margin-inline:auto;
  align-items:start;
}
.site-footer__kicker{
  margin:0;
  font-family:var(--font-display);font-size:clamp(26px,2.6vw,34px);
  font-weight:700;line-height:1.08;letter-spacing:.01em;color:var(--bone);
}
.site-footer__tagline{
  margin:8px 0 0;
  font-family:var(--font-serif);font-style:italic;font-size:13px;
  letter-spacing:.02em;color:var(--clay);
}
.site-footer__note{
  margin:16px 0 0;max-width:34ch;
  font-size:12px;line-height:1.75;
  color:rgba(157,180,196,.72);
}
.site-footer__cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.footer-col__title{
  margin:0 0 14px;
  font-family:var(--font-mono);font-size:10px;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;
  color:var(--steel);
}
.footer-col__list{display:flex;flex-direction:column;gap:9px;}
.footer-col__list a{
  display:inline-block;
  color:rgba(243,240,228,.78);
  font-size:13px;line-height:1.5;text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.footer-col__list a:hover{color:var(--lime);border-bottom-color:var(--lime);}
.site-footer__contact .contact-item{
  display:flex;gap:10px;
  margin:0 0 10px;
  font-size:12.5px;line-height:1.6;
}
.contact-key{
  flex:0 0 34px;
  font-family:var(--font-mono);font-size:10px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;
  color:var(--steel);padding-top:2px;
}
.contact-val{color:rgba(243,240,228,.86);word-break:break-word;}
.site-footer__cta{margin-top:14px;}
.site-footer__base{
  display:flex;flex-wrap:wrap;justify-content:space-between;
  gap:10px 24px;
  max-width:var(--maxw);
  margin:clamp(32px,5vw,56px) auto 0;
  padding-top:20px;
  border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.07em;color:rgba(157,180,196,.62);
}
.site-footer__base p{margin:0;}
.site-footer__base a{color:inherit;text-decoration:none;}
.site-footer__base a:hover{color:var(--lime);}

/* =========================================================
   通用组件
   ========================================================= */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:0;margin:0 0 clamp(18px,3vw,30px);
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.08em;color:rgba(157,180,196,.7);
}
.breadcrumbs li{display:flex;align-items:center;gap:8px;}
.breadcrumbs li + li::before{content:"/";color:var(--slate);}
.breadcrumbs a{color:inherit;text-decoration:none;}
.breadcrumbs a:hover{color:var(--lime);}

.figure{
  position:relative;
  margin:0;
  overflow:hidden;
  border:1px solid var(--line-soft);
  border-radius:2px;
  background:var(--moss);
  aspect-ratio:16 / 9;
}
.figure--wide{aspect-ratio:21 / 9;}
.figure--tall{aspect-ratio:3 / 4;}
.figure--square{aspect-ratio:1 / 1;}
.figure > img{
  width:100%;height:100%;
  object-fit:cover;
  display:block;
}
.figure::after{
  content:"";
  position:absolute;inset:0;
  pointer-events:none;
  opacity:.42;
  background-image:
    linear-gradient(to right,rgba(157,180,196,.14) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(157,180,196,.14) 1px,transparent 1px);
  background-size:48px 48px;
}
.figure__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  margin:0;padding:12px 14px;
  background:linear-gradient(to top,rgba(7,17,13,.9),rgba(7,17,13,0));
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.06em;color:rgba(243,240,228,.88);
}

.tabs{display:block;}
.tablist{
  display:flex;flex-wrap:wrap;gap:4px;
  border-bottom:1px solid var(--line);
}
.tab{
  appearance:none;-webkit-appearance:none;
  padding:10px 14px;
  background:transparent;border:0;border-bottom:2px solid transparent;
  color:rgba(157,180,196,.86);
  font-family:var(--font-mono);font-size:12px;font-weight:600;
  letter-spacing:.09em;cursor:pointer;
  transition:color .16s ease,border-color .16s ease;
}
.tab:hover{color:var(--bone);}
.tab[aria-selected="true"]{color:var(--lime);border-bottom-color:var(--lime);}
.tabpanel{padding-top:22px;}
.tabpanel[hidden]{display:none;}

.scroll-progress{
  position:fixed;
  top:var(--bar-h);left:var(--rail-w);right:0;
  height:2px;z-index:125;pointer-events:none;
}
.scroll-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--lime) 0%,var(--lime) 62%,var(--signal) 100%);
}

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

/* =========================================================
   响应式：≤1079px 收起窄轨，改为抽拉目录
   ========================================================= */
@media (max-width:1079px){
  :root{--rail-w:0px;--bar-h:58px;}
  body{padding-left:0;}
  .site-header__bar{left:0;gap:10px;}
  .site-header__stat{display:none;}
  .quick-actions{display:none;}

  .nav-toggle{display:inline-flex;margin-left:auto;}

  .site-nav{
    top:var(--bar-h);right:0;bottom:0;left:0;
    width:auto;
    padding:24px var(--gutter) 40px;
    border-right:0;
    border-top:1px solid var(--line);
    background:linear-gradient(180deg,var(--deep) 0%,var(--ink) 60%);
    transform:translateY(-10px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .2s ease,transform .2s ease,visibility 0s linear .2s;
  }
  .site-header[data-open] .site-nav{
    transform:none;
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transition:opacity .2s ease,transform .2s ease,visibility 0s linear 0s;
  }
  .site-nav__title{margin-left:0;color:rgba(157,180,196,.7);}
  .site-nav__link{
    padding:14px 12px;
    font-size:16px;
    border-left-width:3px;
  }
  .site-nav__idx{font-size:11px;}
  .site-nav__quick{display:flex;}
  .site-nav__side{margin-top:28px;}
  .site-nav__note{margin-left:0;}
  .site-nav__cta{display:inline-block;padding:11px 20px;}

  body:has(.site-header[data-open]){overflow:hidden;}
}

@media (max-width:1000px){
  .site-footer__main{grid-template-columns:1fr;}
  .site-footer__note{max-width:52ch;}
  .site-footer__cols{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px 16px;}
}

@media (max-width:640px){
  .site-footer__cols{grid-template-columns:repeat(2,minmax(0,1fr));}
  .site-footer__base{flex-direction:column;gap:6px;}
  .site-header__bar{padding-inline:14px;}
  .brand__sub{display:none;}
  .brand__name{font-size:17px;}
}

@media (max-width:420px){
  .nav-toggle{padding:8px 10px;gap:7px;}
  .nav-toggle__label{font-size:10px;letter-spacing:.1em;}
}

/* ---------- 可访问性与减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html.js-enabled [data-reveal]{opacity:1;transform:none;}
  .site-nav{transition:none;}
}