/* ==========================================================================
   乐竞体育 · 共享样式 /assets/site.css
   雪山白留白 + 岩黑结构 + 藏红锚点 + 经幡蓝交互 + 绿茵/琥珀状态
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --snow:#F7F8F5;
  --ink:#101314;
  --red:#C2301F;
  --red-deep:#A82818;
  --blue:#1D5FD0;
  --blue-deep:#0E3A82;
  --green:#2E9E5B;
  --amber:#E5A31B;
  --mist:#DDE4EC;
  --stone:#6B7176;

  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"JetBrains Mono","SF Mono","Cascadia Mono",Menlo,Consolas,monospace;

  --radius-s:12px;
  --radius-m:20px;
  --radius-l:28px;

  --shadow-soft:0 18px 40px -28px rgba(16,19,20,.42);
  --shadow-lift:0 26px 52px -30px rgba(16,19,20,.55);

  --container:1240px;
  --gutter:clamp(18px,4vw,40px);

  --ribbon:linear-gradient(90deg,var(--blue) 0 25%,var(--red) 25% 50%,var(--green) 50% 75%,var(--amber) 75% 100%);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote,dl,dd,address{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}
input,select,textarea{font:inherit;color:inherit}
address{font-style:normal}
summary{list-style:none}

/* ---------- 3. 基础排版 ---------- */
body{
  background:var(--snow);
  color:var(--ink);
  font-family:var(--sans);
  font-size:clamp(16px,.5vw + 14.5px,17px);
  line-height:1.75;
  font-weight:400;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.18;text-wrap:balance}
h1{font-size:clamp(38px,7vw,78px)}
h2{font-size:clamp(26px,3.4vw,42px)}
h3{font-size:clamp(19px,2vw,23px)}
p{text-wrap:pretty}
::selection{background:var(--red);color:var(--snow)}
main#main-content{display:block;padding-bottom:clamp(40px,6vw,80px);scroll-margin-top:140px}
#main-content:focus{outline:none}

/* ---------- 4. 键盘焦点与无障碍工具 ---------- */
:where(a,button,summary,[tabindex]):focus-visible{
  outline:2px solid var(--red);
  outline-offset:3px;
  border-radius:8px;
}
.skip-link{
  position:fixed;top:10px;left:50%;z-index:200;
  transform:translate(-50%,-180%);
  padding:11px 22px;border-radius:999px;
  background:var(--ink);color:var(--snow);
  font-size:.86rem;font-weight:700;letter-spacing:.02em;
  box-shadow:var(--shadow-lift);
  transition:transform .2s ease;
}
.skip-link:focus{transform:translate(-50%,0)}
.visually-hidden{
  position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 5. 布局工具 ---------- */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(56px,8vw,96px)}
.section--tight{padding-block:clamp(34px,5vw,60px)}
.grid{display:grid;gap:clamp(18px,3vw,32px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.grid--4-8{grid-template-columns:minmax(0,4fr) minmax(0,8fr)}
.ribbon{height:6px;border-radius:999px;background:var(--ribbon)}
.contour{position:relative;isolation:isolate}
.contour::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:repeating-radial-gradient(120% 130% at 0% 0%,transparent 0 42px,rgba(221,228,236,.85) 42px 43px);
  opacity:.55;
}

/* ---------- 6. 章节头 / 文本 ---------- */
.section-head{
  display:grid;grid-template-columns:auto minmax(0,1fr);
  gap:clamp(14px,3vw,32px);align-items:start;
  margin-bottom:clamp(26px,4vw,48px);
}
.section-head__index{
  font-family:var(--mono);font-size:.78rem;letter-spacing:.18em;
  color:var(--red);padding-top:.65em;font-variant-numeric:tabular-nums;
}
.section-head__title{font-size:clamp(26px,3.4vw,42px)}
.section-head__desc{margin-top:12px;color:var(--stone);max-width:38ch;font-size:.97rem}
.lede{font-size:clamp(1.02rem,1.3vw,1.18rem);line-height:1.82;color:#2B3235;max-width:34em}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.prose{max-width:38em}
.prose > * + *{margin-top:1.1em}
.prose h2{font-size:clamp(22px,2.6vw,30px);margin-top:1.9em}
.prose h3{font-size:1.14rem;margin-top:1.7em}
.prose p{color:#252C2E}
.prose ul{list-style:disc;padding-left:1.25em}
.prose li{padding-left:.2em;margin-top:.35em}
.prose a{color:var(--blue);border-bottom:1px solid rgba(29,95,208,.35)}
.prose a:hover{border-bottom-color:var(--blue)}

/* ---------- 7. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;border:1px solid transparent;
  font-size:.92rem;font-weight:700;letter-spacing:.01em;line-height:1.3;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--red);color:var(--snow)}
.btn--primary:hover{background:var(--red-deep)}
.btn--blue{background:var(--blue);color:var(--snow)}
.btn--blue:hover{background:var(--blue-deep)}
.btn--ghost{background:transparent;color:var(--ink);border-color:rgba(16,19,20,.24)}
.btn--ghost:hover{background:var(--ink);border-color:var(--ink);color:var(--snow)}

/* ---------- 8. 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;
  border:1px solid var(--mist);background:rgba(221,228,236,.35);color:var(--ink);
  white-space:nowrap;
}
.tag--live{background:rgba(46,158,91,.12);border-color:rgba(46,158,91,.42);color:#1F7342}
.tag--live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green)}
.tag--data{background:rgba(229,163,27,.18);border-color:rgba(229,163,27,.52);color:#8A6108}
.tag--brand{background:rgba(194,48,31,.1);border-color:rgba(194,48,31,.36);color:#9D2517}

/* ---------- 9. 卡片 / 数据 / 披露 ---------- */
.card{
  position:relative;background:#fff;border:1px solid var(--mist);
  border-radius:var(--radius-l);padding:clamp(20px,3vw,30px);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift);border-color:rgba(29,95,208,.34)}
.card--ink{background:var(--ink);border-color:var(--ink);color:var(--snow)}
.card--ink:hover{border-color:var(--red)}
.card--canvas{background:rgba(221,228,236,.3)}
.card__head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:12px}
.card__title{font-size:1.05rem;font-weight:800;letter-spacing:-.01em}
.card__meta{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--stone);font-variant-numeric:tabular-nums}
.card--ink .card__meta{color:rgba(247,248,245,.62)}

.stat{display:flex;flex-direction:column;gap:6px}
.stat__num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1;letter-spacing:-.02em;
}
.stat__label{font-size:.8rem;color:var(--stone)}

.disclosure{
  border:1px solid var(--mist);border-radius:var(--radius-m);
  background:#fff;overflow:hidden;
}
.disclosure + .disclosure{margin-top:10px}
.disclosure summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 20px;font-size:.98rem;font-weight:700;cursor:pointer;
  transition:background .2s ease,color .2s ease;
}
.disclosure summary::-webkit-details-marker{display:none}
.disclosure summary::after{content:"+";font-family:var(--mono);font-size:1.15rem;line-height:1;color:var(--red)}
.disclosure[open] summary::after{content:"–"}
.disclosure summary:hover{background:rgba(221,228,236,.35)}
.disclosure[open] summary{border-bottom:1px solid var(--mist);background:rgba(221,228,236,.25)}
.disclosure__body{padding:16px 20px 20px;font-size:.95rem;color:#2B3235}

/* ---------- 10. 图片容器（页面阶段放占位） ---------- */
.media{
  position:relative;overflow:hidden;border-radius:var(--radius-l);
  border:1px solid rgba(16,19,20,.06);
  background:
    radial-gradient(120% 92% at 82% 6%,rgba(247,248,245,.95) 0%,rgba(221,228,236,.6) 36%,rgba(46,158,91,.26) 72%,rgba(14,58,130,.34) 100%),
    var(--mist);
}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background:repeating-radial-gradient(125% 125% at 12% 108%,transparent 0 22px,rgba(16,19,20,.06) 22px 23px);
}
.media--16x9{aspect-ratio:16/9}
.media--3x2{aspect-ratio:3/2}
.media--4x5{aspect-ratio:4/5}
.media--1x1{aspect-ratio:1/1}
.media__img{width:100%;height:100%;object-fit:cover}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:16px 20px;font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;
  color:var(--snow);background:linear-gradient(0deg,rgba(16,19,20,.74),rgba(16,19,20,0));
}

/* ---------- 11. 面包屑 ---------- */
.breadcrumbs{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--stone)}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:6px}
.breadcrumbs__item:not(:last-child)::after{content:"/";color:rgba(107,113,118,.45)}
.breadcrumbs__link{color:var(--blue)}
.breadcrumbs__link:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- 12. 显现动效 ---------- */
.js-reveal [data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.js-reveal [data-reveal].is-revealed{opacity:1;transform:none}

/* ==========================================================================
   13. 悬浮胶囊页头
   ========================================================================== */
.site-header{
  position:sticky;top:0;z-index:60;
  padding:clamp(10px,1.4vw,16px) clamp(10px,3vw,28px) 0;
  background:linear-gradient(180deg,var(--snow) 0%,rgba(247,248,245,.95) 58%,rgba(247,248,245,.72) 100%);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:70;
  background:rgba(221,228,236,.55);pointer-events:none;
}
.scroll-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--blue) 0%,var(--red) 55%,var(--amber) 100%);
  transition:width .12s linear;
}
.header-shell{
  width:100%;max-width:var(--container);margin-inline:auto;
  display:flex;flex-direction:column;gap:8px;
}
.nav-island{
  display:flex;align-items:center;gap:clamp(8px,1.6vw,22px);
  padding:8px 10px 8px 16px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--mist);
  border-radius:999px;
  box-shadow:0 10px 30px -20px rgba(16,19,20,.5);
  transition:box-shadow .25s ease,background .25s ease,border-color .25s ease;
}
.site-header[data-scrolled="true"] .nav-island{
  background:#fff;
  border-color:rgba(16,19,20,.14);
  box-shadow:0 18px 40px -24px rgba(16,19,20,.62);
}

/* 品牌 */
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;border-radius:999px}
.brand-mark{width:30px;height:30px;flex:0 0 auto;color:var(--red)}
.brand-mark svg{width:100%;height:100%}
.brand-text{display:flex;flex-direction:column;line-height:1.06}
.brand-name{font-size:1.02rem;font-weight:800;letter-spacing:-.01em}
.brand-tagline{
  font-family:var(--mono);font-size:.6rem;letter-spacing:.24em;
  color:var(--stone);text-transform:uppercase;
}
.brand:hover .brand-tagline{color:var(--red)}

/* 主导航 */
.primary-nav{display:flex;flex:1 1 auto;justify-content:center;min-width:0}
.nav-list{display:flex;align-items:center;gap:2px;flex-wrap:nowrap}
.nav-link{
  display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:999px;
  font-size:.86rem;font-weight:600;letter-spacing:.01em;
  color:rgba(16,19,20,.72);white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease;
}
.nav-link:hover{background:rgba(221,228,236,.65);color:var(--blue)}
.nav-link[aria-current="page"]{
  background:var(--ink);color:var(--snow);
  box-shadow:0 8px 18px -12px rgba(16,19,20,.8);
}
.nav-link[aria-current="page"]:hover{background:var(--ink);color:var(--snow)}

/* 快捷入口胶囊 */
.header-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 15px;border-radius:999px;
  font-size:.82rem;font-weight:700;letter-spacing:.01em;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.pill:hover{transform:translateY(-1px)}
.pill--watch{background:var(--blue);color:var(--snow);box-shadow:0 10px 20px -14px var(--blue)}
.pill--watch:hover{background:var(--blue-deep);box-shadow:0 14px 26px -16px var(--blue-deep)}
.pill--board{background:transparent;color:var(--ink);border:1px solid rgba(194,48,31,.35)}
.pill--board::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--amber);flex:0 0 auto}
.pill--board:hover{background:var(--red);border-color:var(--red);color:var(--snow)}
.pill--board:hover::before{background:var(--snow)}

/* 移动端菜单按钮 */
.nav-toggle{
  display:none;flex:0 0 auto;
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--mist);background:var(--snow);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:rgba(221,228,236,.5)}
.nav-toggle-bar{
  display:block;width:16px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .22s ease,opacity .18s ease;
}
.nav-toggle[aria-expanded="true"]{background:var(--ink);border-color:var(--ink)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar{background:var(--snow)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 状态带 */
.status-band{
  position:relative;display:flex;align-items:center;gap:12px;overflow:hidden;
  margin:0 8px;padding:5px 16px 5px 18px;
  border-radius:999px;
  background:linear-gradient(90deg,rgba(221,228,236,.6),rgba(221,228,236,.12));
}
.status-band::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:6px;
  background:linear-gradient(180deg,var(--blue) 0 25%,var(--red) 25% 50%,var(--green) 50% 75%,var(--amber) 75% 100%);
}
.status-band__dot{
  width:6px;height:6px;border-radius:50%;flex:0 0 auto;
  background:var(--green);box-shadow:0 0 0 3px rgba(46,158,91,.18);
}
.status-band__text{
  font-size:.74rem;line-height:1.6;color:var(--stone);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.status-band__mono{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.04em;
  color:var(--ink);font-variant-numeric:tabular-nums;
}

/* ==========================================================================
   14. 页脚
   ========================================================================== */
.site-footer{
  position:relative;
  margin-top:clamp(64px,9vw,120px);
  background:var(--blue-deep);
  color:rgba(247,248,245,.86);
}
.site-footer::before{content:"";display:block;height:6px;background:var(--ribbon)}
.footer-shell{
  max-width:var(--container);margin-inline:auto;
  padding:clamp(38px,6vw,72px) var(--gutter) clamp(26px,4vw,44px);
  display:grid;
  grid-template-columns:1.3fr .7fr .8fr 1.3fr;
  gap:clamp(24px,4vw,48px);
}
.footer-brand{min-width:0}
.footer-logo{
  display:inline-block;font-size:1.34rem;font-weight:800;letter-spacing:-.01em;
  color:var(--snow);
}
.footer-logo:hover{color:var(--amber)}
.footer-slogan{
  margin-top:8px;font-family:var(--mono);font-size:.72rem;
  letter-spacing:.3em;color:var(--amber);
}
.footer-blurb{
  margin-top:16px;max-width:26ch;font-size:.88rem;line-height:1.85;
  color:rgba(247,248,245,.7);
}
.footer-col{min-width:0}
.footer-col__title{
  margin-bottom:14px;font-family:var(--mono);font-size:.72rem;
  font-weight:500;letter-spacing:.16em;color:rgba(247,248,245,.55);
}
.footer-list li + li{margin-top:9px}
.footer-list a{
  font-size:.9rem;color:rgba(247,248,245,.86);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-list a:hover{color:var(--snow);border-bottom-color:var(--amber)}
.footer-contact{font-size:.88rem;line-height:1.9;color:rgba(247,248,245,.85);word-break:break-word}
.footer-contact span{display:block}
.footer-contact__label{
  margin-top:10px;font-family:var(--mono);font-size:.68rem;
  letter-spacing:.14em;color:rgba(247,248,245,.48);
}
.footer-contact__label:first-child{margin-top:0}
.footer-contact__note{
  margin-top:14px;font-size:.78rem;line-height:1.8;color:rgba(247,248,245,.58);
  max-width:30ch;
}
.footer-base{border-top:1px solid rgba(247,248,245,.16)}
.footer-base__inner{
  max-width:var(--container);margin-inline:auto;
  padding:18px var(--gutter) 26px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;
  font-size:.78rem;color:rgba(247,248,245,.6);
}
.footer-meta{font-family:var(--mono);letter-spacing:.02em;font-variant-numeric:tabular-nums}
.footer-legal{display:flex;flex-wrap:wrap;gap:8px 20px}
.footer-legal a{color:rgba(247,248,245,.78);border-bottom:1px solid transparent}
.footer-legal a:hover{color:var(--snow);border-bottom-color:rgba(247,248,245,.6)}

/* ==========================================================================
   15. 响应式
   ========================================================================== */
@media (max-width:1080px){
  .nav-link{padding:7px 11px;font-size:.82rem}
  .pill{padding:7px 13px;font-size:.79rem}
  .footer-shell{grid-template-columns:1.2fr .8fr .8fr 1.2fr}
}

@media (max-width:980px){
  .nav-island{flex-wrap:wrap;border-radius:26px;row-gap:6px}
  .nav-toggle{display:inline-flex;order:2;margin-left:auto}
  .header-actions{order:1;margin-left:auto}
  .brand{order:0}
  .primary-nav{
    order:3;flex:1 0 100%;display:none;justify-content:flex-start;
    margin-top:6px;padding-top:10px;border-top:1px solid var(--mist);
  }
  .primary-nav[data-open]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:4px}
  .nav-link{
    width:100%;justify-content:flex-start;
    padding:11px 16px;border-radius:14px;font-size:.95rem;
  }
  .footer-shell{grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(22px,4vw,36px)}
  .footer-brand{grid-column:1 / -1}
  .footer-blurb{max-width:44ch}
}

@media (max-width:860px){
  .grid--2,.grid--3,.grid--7-5,.grid--5-7,.grid--4-8{grid-template-columns:minmax(0,1fr)}
  .section-head{grid-template-columns:minmax(0,1fr);gap:6px}
  .section-head__index{padding-top:0}
}

@media (max-width:640px){
  .status-band{margin:0 4px;padding:4px 12px 4px 16px;gap:8px}
  .status-band__text{font-size:.68rem}
  .status-band__mono{font-size:.66rem}
  .brand-mark{width:26px;height:26px}
  .brand-name{font-size:.94rem}
  .brand-tagline{font-size:.54rem;letter-spacing:.18em}
  .pill{padding:7px 11px;font-size:.74rem}
  .nav-toggle{width:36px;height:36px}
  .footer-shell{grid-template-columns:minmax(0,1fr)}
  .footer-base__inner{flex-direction:column;align-items:flex-start}
}

@media (max-width:400px){
  .brand-tagline{display:none}
  .header-actions{gap:6px}
  .pill--board{padding:7px 9px}
}

/* ==========================================================================
   16. 降低动效偏好
   ========================================================================== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .js-reveal [data-reveal]{opacity:1;transform:none}
  .card:hover,.btn:hover,.pill:hover{transform:none}
}