/* =========================================================
   博万体育主站 · 共享样式 /assets/site.css
   深空蓝底色 + 荧光青 / 活力橙双色数据语义
   ========================================================= */

:root{
  --ink-900:#070B1A;
  --ink-850:#0A1024;
  --ink-800:#0E1630;
  --ink-700:#1D2A4A;
  --cyan:#21E6C1;
  --cyan-soft:#7FF3DE;
  --orange:#FF7A2F;
  --orange-soft:#FFB347;
  --coral:#FF4D6D;
  --peak:#FFFFFF;
  --text:#C6CEDD;
  --text-dim:#8792A8;

  --home-grad:linear-gradient(135deg,#FFB347 0%,#FF7A2F 100%);
  --away-grad:linear-gradient(135deg,#7FF3DE 0%,#21E6C1 100%);

  --font-display:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-data:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,"Courier New",monospace;

  --bar-h:68px;
  --rail-w:208px;
  --shell:1240px;
  --gap:clamp(18px,3vw,28px);
  --pad:clamp(18px,4vw,40px);
  --cut:16px;
  --slant:-8deg;
  --ease:cubic-bezier(.22,.72,.28,1);
  --shadow:0 24px 50px -30px rgba(0,0,0,.92);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--bar-h) + 20px);
  scrollbar-color:var(--ink-700) var(--ink-900);
}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit}
button{font:inherit;color:inherit;border:0;background:none}
table{border-collapse:collapse;width:100%}
::selection{background:rgba(33,230,193,.3);color:var(--peak)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:1px}
html.nav-open,html.nav-open body{overflow:hidden}

body{
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.24;color:var(--peak)}
h1{font-size:clamp(30px,5.4vw,56px);letter-spacing:-.015em}
h2{font-size:clamp(24px,3.4vw,38px);letter-spacing:-.01em}
h3{font-size:clamp(18px,2.2vw,24px)}
p{max-width:72ch}
strong{color:var(--peak);font-weight:700}
a{text-decoration-thickness:1px;text-underline-offset:3px}

/* ---------- 主内容区（配合固定头部与左侧轨道） ---------- */
main{display:block;padding-top:var(--bar-h)}
@media (min-width:1180px){
  main{padding-left:var(--rail-w)}
}
section[id]{scroll-margin-top:calc(var(--bar-h) + 24px)}

/* ---------- 通用排版工具 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--pad);
}
.sr-only{
  position:absolute;width:1px;height:1px;margin:-1px;padding:0;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;
}
.stack > * + *{margin-top:clamp(16px,2.4vw,28px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-data);font-size:11px;font-weight:600;
  letter-spacing:.24em;text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--orange);flex:0 0 auto}
.lede{
  font-size:clamp(17px,2vw,20px);line-height:1.7;color:var(--text);max-width:62ch;
}
.stat{display:flex;flex-direction:column;gap:2px}
.stat-num{
  font-family:var(--font-data);font-weight:600;font-variant-numeric:tabular-nums;
  font-size:clamp(26px,4vw,42px);line-height:1.1;color:var(--peak);letter-spacing:-.02em;
}
.stat-key{font-size:12px;letter-spacing:.16em;color:var(--text-dim)}

.section-head{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.7fr);
  gap:var(--gap);align-items:end;
  margin-bottom:clamp(24px,4vw,44px);
}
@media (max-width:860px){
  .section-head{grid-template-columns:1fr;align-items:start}
}

/* ---------- 网格 ---------- */
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.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-9{grid-column:span 9}
.span-12{grid-column:span 12}
@media (max-width:940px){
  .grid-12{grid-template-columns:repeat(4,minmax(0,1fr))}
  .span-4,.span-5,.span-6,.span-7,.span-8,.span-9,.span-12{grid-column:span 4}
}

/* ---------- 面板与装饰 ---------- */
.cut-panel{
  position:relative;
  background:linear-gradient(158deg,rgba(14,22,48,.97) 0%,rgba(9,15,36,.97) 100%);
  border:1px solid var(--ink-700);
  padding:clamp(20px,3vw,30px);
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
  box-shadow:var(--shadow);
}
.panel-head{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;
  gap:10px 18px;margin-bottom:18px;
}
.panel-title{
  font-family:var(--font-display);font-size:clamp(17px,2.2vw,22px);
  font-weight:800;color:var(--peak);letter-spacing:.01em;
}
.panel-meta{font-family:var(--font-data);font-size:12px;color:var(--text-dim);letter-spacing:.06em}

.slant-band{
  height:14px;width:100%;
  background:linear-gradient(90deg,var(--orange-soft) 0%,var(--orange) 28%,var(--cyan) 72%,var(--cyan-soft) 100%);
  opacity:.75;
  transform:skewY(var(--slant));
  transform-origin:left center;
}
.mesh{
  background-image:radial-gradient(rgba(29,42,74,.9) 1.2px,transparent 1.2px);
  background-size:22px 22px;
  background-position:0 0;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-body);font-size:14px;font-weight:600;letter-spacing:.04em;
  white-space:nowrap;text-decoration:none;cursor:pointer;
  padding:10px 20px;border:1px solid transparent;background:transparent;color:var(--text);
  transition:color .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease),filter .25s var(--ease);
}
.btn-ghost{
  color:var(--cyan);border-color:rgba(33,230,193,.5);background:rgba(33,230,193,.06);
}
.btn-ghost:hover{background:rgba(33,230,193,.16);border-color:var(--cyan);color:var(--cyan-soft)}
.btn-solid{
  background:var(--home-grad);color:#26100A;font-weight:700;
  clip-path:polygon(10px 0,100% 0,calc(100% - 10px) 100%,0 100%);
  padding:11px 24px;
}
.btn-solid:hover{filter:brightness(1.1)}
.btn-line{
  color:var(--cyan-soft);padding:4px 0;border-bottom:1px solid rgba(33,230,193,.4);
}
.btn-line:hover{border-bottom-color:var(--cyan);color:var(--cyan)}

/* ---------- 标签筛选 ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.08em;padding:7px 14px;text-decoration:none;cursor:pointer;
  border:1px solid var(--ink-700);background:rgba(14,22,48,.72);color:var(--text-dim);
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.chip:hover{border-color:var(--cyan);color:var(--cyan-soft)}
.chip[aria-pressed="true"],.chip[data-active]{
  border-color:rgba(255,122,47,.7);color:var(--orange-soft);background:rgba(255,122,47,.12);
}

/* ---------- 面包屑 ---------- */
.crumbs{padding-top:clamp(20px,3vw,34px)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:12px;color:var(--text-dim)}
.crumbs li{display:inline-flex;align-items:center;gap:9px}
.crumbs li + li::before{content:"/";color:var(--ink-700)}
.crumbs a{color:var(--text-dim);text-decoration:none}
.crumbs a:hover{color:var(--cyan)}
.crumbs [aria-current="page"]{color:var(--cyan-soft)}

/* ---------- 图片容器（供页面阶段放置视觉素材） ---------- */
.fig{
  position:relative;display:block;overflow:hidden;margin:0;
  background:linear-gradient(150deg,#0E1630 0%,#070B1A 72%);
  border:1px solid var(--ink-700);
}
.fig > img{width:100%;height:100%;object-fit:cover}
.fig::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,11,26,0) 42%,rgba(7,11,26,.8) 100%);
}
.fig-wide{aspect-ratio:21/9}
.fig-16x9{aspect-ratio:16/9}
.fig-4x3{aspect-ratio:4/3}
.fig-1x1{aspect-ratio:1/1}
.fig-cap{
  position:absolute;left:16px;bottom:14px;z-index:2;margin:0;
  font-family:var(--font-data);font-size:12px;letter-spacing:.1em;color:var(--cyan-soft);
}
@media (max-width:600px){
  .fig-wide{aspect-ratio:16/9}
  .fig-cap{left:12px;bottom:10px;font-size:11px}
}

/* ---------- 显现动画 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
[data-reveal].is-in{opacity:1;transform:none}

/* =========================================================
   头部
   ========================================================= */
.skip-link{
  position:fixed;top:-120px;left:16px;z-index:120;
  padding:10px 18px;font-size:14px;font-weight:700;
  background:var(--cyan);color:#04201A;text-decoration:none;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:12px}

.read-rail{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:95;
  background:rgba(29,42,74,.65);pointer-events:none;
}
.read-rail-fill{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--cyan-soft) 42%,var(--orange-soft) 100%);
  transition:width .12s linear;
}

.header-bar{
  position:fixed;top:0;left:0;right:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  height:var(--bar-h);padding:0 var(--pad);
  background:rgba(8,12,28,.82);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--ink-700);
  transition:height .3s var(--ease),background .3s var(--ease);
}
.header-bar::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent 0%,rgba(33,230,193,.8) 24%,rgba(255,122,47,.85) 68%,transparent 100%);
  opacity:.6;
}
.site-header[data-stuck] .header-bar{
  height:56px;background:rgba(7,11,26,.96);
}

.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;flex:0 0 auto}
.brand-mark{
  position:relative;flex:0 0 auto;width:34px;height:34px;
  display:grid;place-items:center;
  background:var(--home-grad);
  clip-path:polygon(22% 0,100% 0,78% 100%,0 100%);
}
.brand-mark span{
  width:13px;height:13px;background:var(--ink-900);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{
  font-family:var(--font-display);font-size:17px;font-weight:800;
  letter-spacing:.08em;color:var(--peak);
}
.brand-line{font-size:11px;letter-spacing:.14em;color:var(--cyan)}

.header-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto}

.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:9px 13px;font-size:13px;letter-spacing:.08em;cursor:pointer;
  color:var(--cyan);background:rgba(33,230,193,.08);
  border:1px solid rgba(33,230,193,.45);
  transition:color .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease);
}
.nav-toggle-bars{
  display:inline-flex;flex-direction:column;justify-content:center;gap:3px;
  width:16px;height:14px;
}
.nav-toggle-bars i{
  display:block;height:2px;width:100%;background:currentColor;
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"]{
  color:var(--orange-soft);background:rgba(255,122,47,.14);border-color:var(--orange);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.nav-veil{
  position:fixed;inset:0;z-index:55;
  background:rgba(3,6,16,.68);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.nav-veil[data-open]{opacity:1;visibility:visible}

.track-nav{
  position:fixed;z-index:70;top:var(--bar-h);bottom:0;left:0;
  width:min(84vw,320px);
  display:flex;flex-direction:column;
  padding:22px 0 26px;
  overflow-y:auto;overscroll-behavior:contain;
  background:linear-gradient(180deg,#0A1128 0%,#0E1630 56%,#080D1F 100%);
  border-right:1px solid var(--ink-700);
  transform:translateX(-101%);
  transition:transform .36s var(--ease);
}
.track-nav[data-open]{transform:translateX(0)}
.track-nav::before{
  content:"";position:absolute;top:0;left:0;width:2px;height:100%;
  background:linear-gradient(180deg,var(--cyan) 0%,transparent 34%,transparent 66%,var(--orange) 100%);
  opacity:.5;
}

.track-label{
  margin:0 0 14px;padding:0 20px;
  font-family:var(--font-data);font-size:11px;letter-spacing:.24em;
  color:var(--text-dim);text-transform:uppercase;
}
.track-list{display:flex;flex-direction:column;gap:2px}
.track-link{
  display:grid;grid-template-columns:32px minmax(0,1fr);align-items:center;gap:10px;
  padding:12px 20px 12px 16px;
  font-size:15px;color:var(--text-dim);text-decoration:none;
  border-left:2px solid transparent;
  transition:color .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease);
}
.track-link:hover{color:var(--cyan-soft);background:rgba(33,230,193,.07)}
.track-num{
  font-family:var(--font-data);font-size:11px;letter-spacing:.06em;
  color:rgba(135,146,168,.62);transition:color .24s var(--ease);
}
.track-link:hover .track-num{color:var(--cyan)}
.track-link[aria-current="page"]{
  color:var(--peak);
  background:linear-gradient(90deg,rgba(33,230,193,.17) 0%,rgba(33,230,193,0) 78%);
  border-left-color:var(--cyan);
}
.track-link[aria-current="page"] .track-num{color:var(--cyan)}
.track-link[aria-current="page"] .track-name{font-weight:700}
.track-note{
  margin:auto 20px 0;padding-top:18px;
  font-size:12px;line-height:1.8;color:var(--text-dim);
  border-top:1px solid var(--ink-700);max-width:24ch;
}

@media (max-width:1179px){
  .nav-toggle{display:inline-flex}
}
@media (min-width:1180px){
  .header-bar{left:var(--rail-w)}
  .track-nav{
    top:0;width:var(--rail-w);transform:none;
    padding-top:calc(var(--bar-h) + 20px);
    box-shadow:inset -1px 0 0 rgba(33,230,193,.1);
  }
  .nav-veil{display:none}
}
@media (max-width:640px){
  .brand-line{display:none}
  .brand-name{font-size:16px;letter-spacing:.04em}
  .brand-mark{width:30px;height:30px}
  .btn{padding:8px 13px;font-size:13px}
  .btn-solid{padding:9px 15px}
  .header-tools{gap:7px}
}
@media (max-width:420px){
  .nav-toggle-text{display:none}
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  position:relative;
  margin-top:clamp(64px,10vw,120px);
  background:linear-gradient(180deg,#080D1F 0%,#0E1630 100%);
  border-top:1px solid var(--ink-700);
  color:var(--text-dim);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--orange) 0%,var(--orange-soft) 26%,var(--cyan) 64%,var(--cyan-soft) 100%);
  opacity:.85;
  transform:skewY(-.5deg);
  transform-origin:left center;
}
.footer-inner{
  width:100%;max-width:var(--shell);
  margin-inline:auto;
  padding:clamp(40px,6vw,72px) var(--pad) 30px;
}
.footer-top{
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,2.4fr);
  gap:clamp(28px,5vw,60px);
}
.footer-logo{
  font-family:var(--font-display);font-size:24px;font-weight:800;
  letter-spacing:.1em;color:var(--peak);text-decoration:none;
}
.footer-logo:hover{color:var(--cyan-soft)}
.footer-tag{
  margin-top:8px;font-family:var(--font-data);font-size:11px;
  letter-spacing:.22em;color:var(--cyan);
}
.footer-note{
  margin-top:16px;font-size:13px;line-height:1.85;color:var(--text-dim);max-width:30ch;
}
.footer-cols{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(18px,3vw,32px);
}
.footer-col-title{
  margin-bottom:14px;
  font-family:var(--font-body);font-size:12px;font-weight:600;
  letter-spacing:.18em;color:var(--cyan);
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  font-size:14px;color:var(--text);text-decoration:none;
  transition:color .22s var(--ease),padding-left .22s var(--ease);
}
.footer-links a:hover{color:var(--cyan-soft);padding-left:4px}

.footer-contact{
  display:flex;flex-wrap:wrap;gap:10px 30px;
  margin-top:clamp(30px,4vw,48px);padding-top:24px;
  border-top:1px solid var(--ink-700);
  font-size:13px;color:var(--text-dim);
}
.footer-contact p{margin:0;max-width:none}
.footer-key{
  display:inline-block;margin-right:8px;
  font-family:var(--font-data);font-size:11px;letter-spacing:.14em;color:var(--cyan);
}
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;margin-top:22px;padding-top:20px;
  border-top:1px solid var(--ink-700);
}
.footer-meta{margin:0;font-size:12px;letter-spacing:.04em;color:var(--text-dim);max-width:none}

@media (min-width:1180px){
  .footer-inner{padding-left:calc(var(--rail-w) + var(--pad))}
}
@media (max-width:860px){
  .footer-top{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .footer-note{max-width:46ch}
}
@media (max-width:460px){
  .footer-cols{grid-template-columns:1fr}
}

/* =========================================================
   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}
  .slant-band{transform:none}
}