/* =====================================================================
   博万体育赛事 · 共享样式 /assets/site.css
   母题：堆叠面板 + 侧边轨道 + 轮次刻度 + 珠宝色分区
   ===================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink:#0B1410;
  --ink-2:#080F0C;
  --panel:#0E2A22;
  --panel-2:#123A2E;
  --line:#1E5C46;
  --line-soft:rgba(30,92,70,.5);
  --lime:#C6F24E;
  --lime-soft:rgba(198,242,78,.14);
  --orange:#FF8A3D;
  --red:#E4353C;
  --yellow:#F2C744;
  --ivory:#EDEAE0;
  --muted:#8FA79B;
  --purple:#4C2E6B;
  --wine:#7A1E2B;

  --rail-w:88px;
  --maxw:1320px;
  --gap:24px;
  --radius:28px;
  --radius-sm:18px;
  --pill:999px;

  --font-display:"Archivo Narrow","Arial Narrow","Helvetica Neue Condensed",
    "PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-body:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Source Han Sans SC",
    "Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-data:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Roboto Mono",
    "Liberation Mono",monospace;

  --shadow:0 24px 60px rgba(0,0,0,.45);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
*{margin:0;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px;}
img,svg,video{display:block;max-width:100%;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{list-style:none;padding:0;}
a{color:inherit;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px;}

/* ---------- 3. 中文排版与页面底座 ---------- */
body{
  background:var(--ink);
  color:var(--ivory);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:500;line-height:1.14;letter-spacing:-.01em;}
h1{font-size:clamp(34px,6.4vw,72px);font-weight:400;}
h2{font-size:clamp(26px,3.6vw,44px);}
h3{font-size:clamp(20px,2.4vw,28px);}
p{text-wrap:pretty;}
strong{color:#fff;font-weight:600;}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  display:inline-block;
  padding:11px 20px;border-radius:var(--pill);
  background:var(--lime);color:#0B1410;
  font-size:14px;font-weight:600;text-decoration:none;
  transform:translateY(-200%);
  transition:transform .22s ease;
}
.skip-link:focus{transform:translateY(0);}

/* ---------- 4. 页头：移动吸顶条 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  min-height:64px;padding:10px 16px;
}

.brand{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  grid-template-rows:auto auto;
  column-gap:10px;row-gap:1px;
  align-items:center;
  text-decoration:none;color:var(--ivory);
}
.brand__mark{
  grid-row:1 / span 2;
  width:40px;height:40px;border-radius:15px;
  display:grid;place-items:center;
  background:var(--lime);color:#0B1410;
  font-family:var(--font-display);
  font-size:19px;font-weight:700;letter-spacing:0;
}
.brand__text{
  font-family:var(--font-display);
  font-size:17px;font-weight:600;letter-spacing:.06em;line-height:1.2;
}
.brand__tagline{
  font-size:11px;letter-spacing:.1em;line-height:1.3;color:var(--muted);
}

.nav-toggle{
  display:inline-flex;align-items:center;gap:10px;
  padding:9px 16px;border-radius:var(--pill);
  border:1px solid var(--line);background:rgba(18,58,46,.72);
  color:var(--ivory);font-size:13px;letter-spacing:.1em;
  cursor:pointer;
  transition:border-color .25s ease,color .25s ease,background .25s ease;
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime);}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px;}
.nav-toggle__bars i{
  display:block;height:2px;border-radius:2px;background:currentColor;
  transition:transform .3s ease,width .3s ease;
}
.nav-toggle__bars i:last-child{width:70%;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:first-child{transform:translateY(3px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:last-child{width:100%;transform:translateY(-3px) rotate(-45deg);}
.nav-toggle__label{white-space:nowrap;}

.nav-scrim{
  position:fixed;inset:0;z-index:2;
  background:rgba(4,10,8,.68);
  opacity:0;pointer-events:none;
  transition:opacity .3s ease;
}
.nav-scrim.is-active{opacity:1;pointer-events:auto;}

/* ---------- 5. 导航：移动抽屉 ---------- */
.site-nav{
  position:fixed;top:0;right:0;bottom:0;z-index:3;
  width:min(360px,88vw);
  display:flex;flex-direction:column;gap:4px;
  padding:84px 22px calc(28px + env(safe-area-inset-bottom));
  background:linear-gradient(180deg,#123A2E 0%,#0B1410 62%);
  border-left:1px solid var(--line);
  overflow-y:auto;overscroll-behavior:contain;
  transform:translateX(102%);
  visibility:hidden;
  transition:transform .42s cubic-bezier(.22,.7,.2,1),visibility .42s linear;
}
.site-nav[data-open]{transform:translateX(0);visibility:visible;}
.site-nav__title{
  font-family:var(--font-data);font-size:11px;font-weight:500;
  letter-spacing:.3em;color:var(--muted);text-transform:uppercase;
  margin-bottom:12px;
}
.site-nav__list{display:flex;flex-direction:column;gap:2px;}
.site-nav__link{
  display:flex;align-items:center;gap:12px;
  padding:12px 16px;border-radius:var(--pill);
  color:var(--ivory);font-size:16px;font-weight:500;text-decoration:none;
  transition:background .25s ease,color .25s ease;
}
.site-nav__link:hover{background:var(--lime-soft);color:var(--lime);}
.site-nav__idx{
  font-family:var(--font-data);font-size:11px;
  letter-spacing:.06em;color:var(--muted);
}
.site-nav__label{white-space:nowrap;}
.site-nav__link[aria-current="page"]{background:var(--lime);color:#0B1410;}
.site-nav__link[aria-current="page"] .site-nav__idx{color:rgba(11,20,16,.65);}

.header-actions{
  margin-top:auto;
  display:flex;flex-direction:column;gap:10px;
  padding-top:24px;
}
.header-actions .btn{width:100%;}

.rail-foot{display:none;}

/* 抽屉打开时锁滚动（仅移动端） */
@media (max-width:1023px){
  html.nav-lock,html.nav-lock body{overflow:hidden;}
}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--pill);
  border:1px solid transparent;
  font-family:var(--font-body);font-size:14px;font-weight:600;
  letter-spacing:.03em;line-height:1.2;text-decoration:none;cursor:pointer;
  transition:background .25s ease,color .25s ease,border-color .25s ease,transform .25s ease;
}
.btn--lime{background:var(--lime);color:#0B1410;}
.btn--lime:hover{background:#D8FF6B;transform:translateY(-1px);}
.btn--ghost{border-color:var(--line);color:var(--ivory);background:rgba(237,234,224,.03);}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime);}
.btn--sm{padding:9px 16px;font-size:13px;}
.btn--block{width:100%;}

/* ---------- 7. 布局基元 ---------- */
.container{
  width:100%;max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:clamp(16px,4vw,40px);
}
.container--narrow{max-width:800px;}
.section{padding-block:clamp(40px,6vw,88px);}
.stack{display:flex;flex-direction:column;gap:var(--stack-gap,18px);}
.grid{display:grid;gap:var(--gap);grid-template-columns:1fr;}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));}
.grid--split{grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr));}

.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;
  gap:10px 20px;margin-bottom:clamp(20px,3vw,34px);
}
.section-head__title{font-family:var(--font-display);font-weight:500;}
.eyebrow{
  display:inline-block;
  font-family:var(--font-data);font-size:11px;font-weight:500;
  letter-spacing:.3em;text-transform:uppercase;color:var(--lime);
}
.chapter-num{
  display:block;
  font-family:var(--font-data);font-weight:300;
  font-size:clamp(44px,9vw,112px);line-height:.82;letter-spacing:-.05em;
  color:var(--lime-soft);
}
.lede{font-size:clamp(18px,2vw,21px);line-height:1.7;color:#DCE3DC;max-width:36em;}
.prose{max-width:38em;}
.prose p + p{margin-top:1.05em;}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.5em;}
.mono{font-family:var(--font-data);font-variant-numeric:tabular-nums;}

/* ---------- 8. 堆叠面板 ---------- */
.panel{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(20px,3vw,36px);
}
.panel--2{background:var(--panel-2);}
.panel--flush{padding:0;overflow:hidden;}
.panel--wine{
  background:linear-gradient(180deg,rgba(122,30,43,.55),rgba(11,20,16,.92));
  border-color:rgba(228,53,60,.35);
}
.panel--purple{
  background:linear-gradient(180deg,rgba(76,46,107,.6),rgba(11,20,16,.92));
  border-color:rgba(140,96,190,.4);
}
.panel--orange{
  background:linear-gradient(180deg,rgba(255,138,61,.16),rgba(11,20,16,.94));
  border-color:rgba(255,138,61,.4);
}
@media (min-width:768px){
  .panel--offset{margin-inline-start:24px;}
  .panel--offset-r{margin-inline-end:24px;}
}

/* ---------- 9. 数据母题 ---------- */
.data-band{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px 24px;
  min-height:96px;padding:18px 22px;
  background:var(--panel-2);
  border:1px solid var(--line);border-radius:var(--radius-sm);
}
.data-band--tall{min-height:144px;}
.axis{width:72px;flex:none;}

.stat{display:flex;flex-direction:column;gap:4px;}
.stat__value{
  font-family:var(--font-data);font-variant-numeric:tabular-nums;
  font-size:clamp(28px,5vw,56px);font-weight:500;
  line-height:1;letter-spacing:-.02em;color:var(--lime);
}
.stat__label{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);}

.band{
  position:relative;height:10px;width:100%;
  border-radius:var(--pill);
  background:rgba(143,167,155,.18);
  overflow:hidden;
}
.band__fill{
  display:block;height:100%;width:var(--w,0%);
  border-radius:var(--pill);background:var(--lime);
  transition:width .9s cubic-bezier(.22,.7,.2,1);
}
.band--orange .band__fill{background:var(--orange);}
.band--thin{height:6px;}

.data-table{
  width:100%;font-family:var(--font-data);font-size:15px;
  font-variant-numeric:tabular-nums;
}
.data-table th{
  text-align:left;font-weight:500;font-size:12px;
  letter-spacing:.16em;color:var(--muted);
  padding:10px 12px;border-bottom:1px solid var(--line);
}
.data-table td{padding:12px;border-bottom:1px solid var(--line-soft);}
.data-table tbody tr:nth-child(even){background:rgba(18,58,46,.5);}

.flag{display:inline-block;width:10px;height:14px;border-radius:3px;background:var(--muted);}
.flag--red{background:var(--red);}
.flag--yellow{background:var(--yellow);}
.flag--lime{background:var(--lime);}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--pill);
  border:1px solid var(--line);background:rgba(18,58,46,.5);
  font-size:12px;letter-spacing:.08em;color:var(--muted);
}
.tag--lime{color:var(--lime);border-color:rgba(198,242,78,.45);}
.tag--orange{color:var(--orange);border-color:rgba(255,138,61,.45);}
.tag--red{color:#FF7C82;border-color:rgba(228,53,60,.5);}
.tag--yellow{color:var(--yellow);border-color:rgba(242,199,68,.5);}
.tag--purple{color:#C7A8E8;border-color:rgba(140,96,190,.5);}

/* ---------- 10. 图片容器（供页面阶段放置占位） ---------- */
.media-frame{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--panel-2);
  aspect-ratio:16 / 9;
  isolation:isolate;
}
.media-frame > img,
.media-frame > picture > img{
  width:100%;height:100%;object-fit:cover;
}
.media-frame--portrait{aspect-ratio:3 / 4;}
.media-frame--square{aspect-ratio:1 / 1;}
.media-frame--tall{aspect-ratio:4 / 5;}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(11,20,16,0) 42%,rgba(11,20,16,.78) 100%);
}
.media-frame--empty::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(
    115deg,
    rgba(30,92,70,.55) 0 14px,
    rgba(18,58,46,.35) 14px 28px
  );
}
.media-frame__caption{
  position:absolute;left:16px;right:16px;bottom:14px;z-index:1;
  font-family:var(--font-data);font-size:12px;
  letter-spacing:.08em;color:var(--ivory);
}

/* ---------- 11. 面包屑 ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:8px;font-size:13px;color:var(--muted);
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px;}
.breadcrumbs__item + .breadcrumbs__item::before{
  content:"/";color:var(--line);letter-spacing:0;
}
.breadcrumbs a{color:var(--muted);text-decoration:none;}
.breadcrumbs a:hover,.breadcrumbs a:focus-visible{color:var(--lime);}
.breadcrumbs [aria-current="page"]{color:var(--ivory);}

/* ---------- 12. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,120px);
  background:linear-gradient(180deg,var(--panel) 0%,var(--ink) 72%);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;
  width:clamp(80px,22vw,260px);height:3px;
  border-radius:var(--pill);
  background:linear-gradient(90deg,var(--lime),var(--orange));
}
.footer__inner{
  width:100%;max-width:var(--maxw);margin-inline:auto;
  padding:clamp(36px,5vw,72px) clamp(16px,4vw,40px) 28px;
}
.footer__top{display:grid;gap:clamp(28px,4vw,56px);}
.footer__brand{display:flex;flex-direction:column;gap:16px;align-items:flex-start;}
.brand--footer{grid-template-columns:auto minmax(0,1fr);}
.brand--footer .brand__tagline{font-size:12px;}
.footer__note{max-width:34em;font-size:14px;line-height:1.75;color:var(--muted);}
.footer__flags{display:flex;gap:6px;}

.footer__cols{
  display:grid;gap:clamp(20px,3vw,32px);
  grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
}
.footer__col-title{
  font-family:var(--font-data);font-size:11px;font-weight:500;
  letter-spacing:.28em;text-transform:uppercase;color:var(--muted);
  margin-bottom:14px;
}
.footer__links{display:flex;flex-direction:column;gap:10px;}
.footer__links a{
  font-size:15px;color:var(--ivory);opacity:.86;
  text-decoration:none;
  transition:color .2s ease,opacity .2s ease;
}
.footer__links a:hover,.footer__links a:focus-visible{color:var(--lime);opacity:1;}

.footer__meta{
  margin-top:clamp(32px,5vw,56px);padding-top:22px;
  border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:space-between;
}
.footer__contact{
  font-family:var(--font-data);font-size:13px;
  letter-spacing:.02em;color:var(--muted);max-width:60ch;
}
.footer__legal{font-size:13px;color:var(--muted);}

/* ---------- 13. JS 注入组件 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;z-index:90;
  width:100%;height:3px;
  transform:scaleX(var(--p,0));transform-origin:0 50%;
  background:linear-gradient(90deg,var(--lime),var(--orange));
  pointer-events:none;
}
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 18px;border:0;border-radius:var(--pill);
  background:var(--lime);color:#0B1410;
  font-family:var(--font-body);font-size:14px;font-weight:600;letter-spacing:.02em;
  cursor:pointer;box-shadow:var(--shadow);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease,background .25s ease;
}
.to-top.is-visible{opacity:1;transform:none;pointer-events:auto;}
.to-top:hover{background:#D8FF6B;}
.to-top__arrow{font-family:var(--font-data);font-size:15px;line-height:1;}

/* ---------- 14. 显现动效 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .6s ease,transform .6s cubic-bezier(.22,.7,.2,1);
  transition-delay:var(--reveal-delay,0ms);
}
[data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 15. 平板 ---------- */
@media (min-width:768px){
  .grid--12{grid-template-columns:repeat(12,1fr);}
  .span-4{grid-column:span 4;}
  .span-5{grid-column:span 5;}
  .span-6{grid-column:span 6;}
  .span-7{grid-column:span 7;}
  .span-8{grid-column:span 8;}
  .span-12{grid-column:span 12;}
  .footer__top{grid-template-columns:minmax(0,5fr) minmax(0,7fr);}
}

/* ---------- 16. 桌面：侧边轨道导航 ---------- */
@media (min-width:1024px){
  html{scroll-padding-top:24px;}
  body{padding-left:var(--rail-w);}

  .site-header{
    position:fixed;top:0;left:0;bottom:0;
    width:var(--rail-w);height:100vh;height:100dvh;z-index:80;
    display:flex;flex-direction:column;align-items:stretch;
    padding:20px 0 16px;
    background:linear-gradient(180deg,#0E2A22 0%,#0B1410 78%);
    border-bottom:0;border-right:1px solid var(--line);
    overflow:hidden;
  }
  .topbar{
    display:flex;flex-direction:column;align-items:center;
    justify-content:flex-start;gap:0;min-height:0;padding:0 0 6px;
  }
  .site-header .brand{
    display:flex;flex-direction:column;align-items:center;gap:9px;
  }
  .site-header .brand__mark{width:44px;height:44px;border-radius:16px;font-size:20px;}
  .site-header .brand__text{
    writing-mode:vertical-rl;text-orientation:upright;
    font-size:14px;letter-spacing:.3em;line-height:1.1;
  }
  .site-header .brand__tagline{display:none;}
  .nav-toggle{display:none;}
  .nav-scrim{display:none;}

  .site-nav{
    position:static;transform:none;visibility:visible;
    width:100%;flex:1 1 auto;min-height:0;
    display:flex;flex-direction:column;align-items:center;gap:6px;
    margin-top:14px;padding:14px 0 0;
    background:none;border-left:0;border-top:1px solid var(--line-soft);
    overflow-y:auto;overflow-x:hidden;
    scrollbar-width:none;
  }
  .site-nav::-webkit-scrollbar{display:none;}
  .site-nav__title{display:none;}
  .site-nav__list{width:100%;align-items:center;gap:6px;}
  .site-nav__link{
    flex-direction:column;gap:0;
    padding:10px 8px;font-size:12px;
    min-width:46px;
  }
  .site-nav__label{
    writing-mode:vertical-rl;text-orientation:upright;
    letter-spacing:.18em;line-height:1.15;
  }
  .site-nav__idx{display:none;}

  .header-actions{
    margin-top:auto;width:100%;
    flex-direction:column;align-items:center;gap:8px;
    padding:14px 0 4px;
  }
  .header-actions .btn{width:auto;}
  .btn--rail{
    writing-mode:vertical-rl;text-orientation:upright;
    padding:16px 10px;font-size:12px;letter-spacing:.16em;
  }

  .rail-foot{
    display:flex;flex-direction:column;align-items:center;
    margin:12px 18px 0;padding:12px 0 2px;
    border-top:1px solid var(--line-soft);
  }
  .rail-foot__ticks{display:flex;flex-direction:column;align-items:center;gap:5px;}
  .rail-foot__ticks i{
    display:block;width:16px;height:3px;
    border-radius:var(--pill);background:rgba(143,167,155,.35);
  }
  .rail-foot__ticks i.is-current{width:34px;background:var(--lime);}

  .scroll-progress{left:var(--rail-w);width:calc(100% - var(--rail-w));}
}

/* ---------- 17. 减弱动效 ---------- */
@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;}
}