/* ============ 球会体育 · 共享样式 /assets/site.css ============ */

/* --- reset --- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;display:block;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
button{background:none;border:0;cursor:pointer}

/* --- variables --- */
:root{
  --ink-bg:#05070E;
  --ink-2:#0C1526;
  --ink-3:#1A2233;
  --lime:#C6F432;
  --orange:#FF6A1A;
  --ice:#7FE3FF;
  --white:#EDF2F8;
  --grey:#93A0B4;
  --lime-veil:#1E3320;
  --orange-veil:#3A1D0E;
  --line:rgba(237,242,248,.10);
  --line-strong:rgba(237,242,248,.20);
  --radius-s:14px;
  --radius-m:20px;
  --radius-l:28px;
  --pill:999px;
  --wrap:1280px;
  --header-h:88px;
  --header-h-shrink:64px;
  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:var(--font-display);
  --font-mono:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",Consolas,"Courier New",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* --- 中文排版基线 --- */
body{
  background:var(--ink-bg);
  color:var(--white);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.85;
  letter-spacing:.01em;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.12;font-weight:900;letter-spacing:-.03em}
p{max-width:64ch}
code,kbd,samp,.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* --- 焦点环 --- */
:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:3px;
  border-radius:4px;
}

/* --- 布局容器 --- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:24px}
.page-shell{display:block;padding-block:0}
.section{padding-block:96px}
.section-tight{padding-block:64px}
@media (max-width:900px){
  .section{padding-block:64px}
  .section-tight{padding-block:44px}
}

/* --- skip link --- */
.skip-link{
  position:absolute;left:16px;top:-80px;z-index:200;
  background:var(--lime);color:var(--ink-bg);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;
  padding:10px 18px;border-radius:var(--pill);
  transition:top .25s var(--ease);
}
.skip-link:focus{top:16px}

/* --- 阅读进度线 --- */
.read-progress{
  position:fixed;top:0;left:0;right:0;height:2px;
  background:var(--lime);
  transform:scaleX(0);transform-origin:0 50%;
  z-index:120;pointer-events:none;
}

/* ================= HEADER ================= */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .35s var(--ease),height .35s var(--ease),border-color .35s var(--ease),backdrop-filter .35s var(--ease);
  height:var(--header-h);
}
.site-header[data-scrolled]{
  background:rgba(12,21,38,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
  height:var(--header-h-shrink);
}
.header-inner{
  height:100%;display:flex;align-items:center;gap:24px;
}
.brand{
  display:flex;align-items:baseline;gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  font-family:var(--font-display);font-weight:900;
  font-size:20px;letter-spacing:-.02em;color:var(--white);
}
.brand-sub{
  font-family:var(--font-mono);font-size:11px;
  letter-spacing:.18em;text-transform:uppercase;color:var(--grey);
}
.brand:hover .brand-sub{color:var(--lime)}

.nav{flex:1 1 auto;display:flex;justify-content:center}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;display:block;
  padding:8px 14px;border-radius:var(--pill);
  font-size:14px;font-weight:500;color:var(--grey);
  transition:color .22s var(--ease),background .22s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--lime);border-radius:2px;
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .28s var(--ease);
}
.nav-link:hover{color:var(--white)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--white);background:rgba(198,244,50,.10)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

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

/* --- 通用按钮 --- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-body);font-size:14px;font-weight:600;
  padding:11px 22px;border-radius:var(--pill);
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  line-height:1.2;
}
.btn-primary{background:var(--lime);color:var(--ink-bg)}
.btn-primary:hover{transform:translateY(-2px);background:#d6ff4d}
.btn-ghost{background:transparent;color:var(--ice);border-color:rgba(127,227,255,.45)}
.btn-ghost:hover{background:rgba(127,227,255,.12);transform:translateY(-2px)}
.btn-orange{background:var(--orange);color:#150800}
.btn-orange:hover{background:#ff8347;transform:translateY(-2px)}
.btn-block{width:100%}

/* --- 移动端汉堡 --- */
.nav-toggle{
  display:none;width:44px;height:44px;flex:0 0 auto;
  border-radius:var(--pill);border:1px solid var(--line-strong);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle-bar{
  display:block;width:18px;height:2px;background:var(--white);border-radius:2px;
  transition:transform .28s var(--ease),opacity .２s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(7px) 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(-7px) rotate(-45deg)}

/* ================= FOOTER ================= */
.site-footer{
  margin-top:96px;
  background:var(--ink-2);
  border-top:1px solid var(--line);
  padding-block:64px 0;
}
.footer-grid{
  display:grid;gap:40px 32px;
  grid-template-columns:1.4fr repeat(4,minmax(0,1fr));
  padding-bottom:48px;
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.footer-brand .brand-mark{font-size:24px}
.footer-note{font-size:14px;color:var(--grey);line-height:1.8;max-width:34ch}
.footer-title{
  font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--white);margin-bottom:14px;
}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{
  font-size:14px;color:var(--grey);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-list a:hover{color:var(--lime);padding-left:4px}
.footer-legal{
  border-top:1px solid var(--line);
  padding-block:22px 28px;
  display:flex;flex-direction:column;gap:8px;
}
.footer-legal-line{font-size:12.5px;color:var(--grey);line-height:1.8;max-width:100%}
.footer-legal-meta{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  color:rgba(147,160,180,.7);text-transform:uppercase;
}

/* ================= 通用排版组件 ================= */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12.5px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--lime);
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";display:block;width:22px;height:2px;background:var(--lime);border-radius:2px;
}
.display-xl{font-size:clamp(48px,7.5vw,96px);line-height:1.02}
.display-lg{font-size:clamp(34px,4.6vw,64px);line-height:1.06}
.display-md{font-size:clamp(24px,2.6vw,40px);line-height:1.14}
.lead{font-size:17px;color:var(--grey);line-height:1.85}
.text-lime{color:var(--lime)}
.text-orange{color:var(--orange)}
.text-ice{color:var(--ice)}
.text-grey{color:var(--grey)}

/* --- 面包屑 --- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--grey);
  padding-block:20px 0;
}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:rgba(147,160,180,.5)}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb [aria-current="page"]{color:var(--white)}

/* --- 卡片 --- */
.card{
  background:var(--ink-3);
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  padding:28px;
  transition:border-color .25s var(--ease),transform .25s var(--ease),background .25s var(--ease);
}
.card:hover{border-color:var(--line-strong)}
.card-flat{background:var(--ink-2);border-radius:var(--radius-m);border:1px solid var(--line);padding:22px}
.card-accent{
  background:linear-gradient(160deg,rgba(198,244,50,.16),rgba(12,21,38,.9) 62%);
  border-color:rgba(198,244,50,.35);
}
.card[data-highlight]{border-color:var(--lime);box-shadow:0 0 0 1px var(--lime) inset}

/* --- 胶囊标签 --- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11.5px;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;
  padding:6px 13px;border-radius:var(--pill);
  background:var(--ink-3);color:var(--grey);border:1px solid var(--line);
}
.chip-lime{background:var(--lime-veil);color:var(--lime);border-color:rgba(198,244,50,.35)}
.chip-orange{background:var(--orange-veil);color:var(--orange);border-color:rgba(255,106,26,.35)}
.chip-ice{background:rgba(127,227,255,.10);color:var(--ice);border-color:rgba(127,227,255,.35)}

/* --- 统计数字 --- */
.stat{display:flex;flex-direction:column;gap:6px}
.stat-value{
  font-family:var(--font-mono);font-weight:600;font-size:clamp(28px,3.4vw,44px);
  line-height:1;color:var(--lime);font-variant-numeric:tabular-nums;
}
.stat-label{font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--grey);font-family:var(--font-mono)}

/* --- 表格 --- */
.data-table{width:100%;border-collapse:collapse;font-size:14px}
.data-table caption{
  text-align:left;font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--grey);padding-bottom:12px;
}
.data-table th,.data-table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.data-table th{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--grey);font-weight:600;
}
.data-table td{font-variant-numeric:tabular-nums;color:var(--white)}
.data-table tbody tr:nth-child(even){background:rgba(127,227,255,.045)}

/* --- 栅格 --- */
.stack{display:flex;flex-direction:column;gap:24px}
.grid-2{display:grid;gap:32px;grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{display:grid;gap:28px;grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-asym{display:grid;gap:40px;grid-template-columns:340px minmax(0,1fr)}
@media (max-width:1024px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-asym{grid-template-columns:1fr}
}
@media (max-width:720px){
  .grid-2,.grid-3{grid-template-columns:1fr}
}

/* --- 左侧赛程轨道 --- */
.track-rail{
  position:sticky;top:calc(var(--header-h-shrink) + 16px);
  align-self:start;
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  padding:22px 20px;
}
.track-rail-title{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--grey);margin-bottom:16px;
}
.track-list{display:flex;flex-direction:column;gap:4px}
.track-item{
  display:flex;align-items:center;gap:12px;
  padding:10px 12px;border-radius:var(--radius-s);
  font-size:14px;color:var(--grey);cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease);
  text-align:left;width:100%;
}
.track-item:hover{background:rgba(198,244,50,.10);color:var(--white)}
.track-item[data-active]{background:rgba(198,244,50,.14);color:var(--white)}
.track-dot{
  width:8px;height:8px;border-radius:50%;flex:0 0 auto;
  background:var(--ink-3);border:1px solid var(--line-strong);
}
.track-item[data-active] .track-dot,.track-item:hover .track-dot{background:var(--lime);border-color:var(--lime)}
.track-meta{margin-left:auto;font-family:var(--font-mono);font-size:12px;color:var(--grey)}
@media (max-width:1024px){
  .track-rail{position:static;border-radius:var(--radius-m);padding:16px}
  .track-list{flex-direction:row;flex-wrap:wrap;gap:8px}
  .track-item{width:auto;border:1px solid var(--line);padding:8px 14px;border-radius:var(--pill)}
}

/* --- 图片容器基础规则 --- */
.media-frame{
  position:relative;overflow:hidden;
  border-radius:var(--radius-l);
  background:var(--ink-3);
  aspect-ratio:4/3;
  border:1px solid var(--line);
}
.media-frame img,.media-frame svg{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--cut{
  border-radius:var(--radius-m);
  clip-path:polygon(0 0,100% 8%,100% 100%,0 92%);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(200deg,rgba(5,7,14,0) 40%,rgba(5,7,14,.55));
}
.media-caption{
  margin-top:10px;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.08em;color:var(--grey);
}

/* --- 显现动效 --- */
.reveal,[data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
.reveal.is-visible,[data-reveal].is-visible{opacity:1;transform:none}

/* --- 折叠卡片 --- */
.accordion{display:flex;flex-direction:column;gap:12px}
.accordion-item{
  background:var(--ink-2);border:1px solid var(--line);
  border-radius:var(--radius-m);overflow:hidden;
}
.accordion-trigger{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--white);
}
.accordion-trigger:hover{color:var(--lime)}
.accordion-icon{
  width:22px;height:22px;flex:0 0 auto;border-radius:50%;
  border:1px solid var(--line-strong);position:relative;
}
.accordion-icon::before,.accordion-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--lime);
  transform:translate(-50%,-50%);transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.accordion-icon::before{width:10px;height:2px}
.accordion-icon::after{width:2px;height:10px}
.accordion-item[data-open] .accordion-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.accordion-panel{
  overflow:hidden;max-height:0;
  transition:max-height .3s var(--ease);
}
.accordion-panel-inner{padding:0 22px 20px;font-size:15px;color:var(--grey);line-height:1.85}

/* ================= 移动端 ================= */
@media (max-width:1080px){
  .header-actions .btn-ghost{display:none}
}
@media (max-width:900px){
  :root{--header-h:72px;--header-h-shrink:60px}
  .nav-toggle{display:inline-flex}
  .header-actions{display:none}
  .nav{
    position:fixed;top:0;right:0;bottom:0;width:min(82vw,340px);
    background:rgba(12,21,38,.98);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    padding:96px 26px 40px;
    display:flex;flex-direction:column;justify-content:flex-start;
    transform:translateX(102%);
    transition:transform .34s var(--ease);
    z-index:110;
  }
  .nav[data-open]{transform:translateX(0)}
  .nav-list{flex-direction:column;align-items:stretch;gap:4px;counter-reset:navidx}
  .nav-list li{counter-increment:navidx}
  .nav-link{
    padding:15px 14px;border-radius:var(--radius-s);
    font-size:16px;color:var(--white);
    display:flex;align-items:center;gap:14px;
  }
  .nav-link::before{
    content:"0" counter(navidx);
    font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
    color:var(--lime);opacity:.85;
  }
  .nav-link::after{left:0;right:auto;bottom:auto;top:50%;width:3px;height:0;transform:none}
  .nav-link[aria-current="page"]::after{height:24px;transform:translateY(-50%);width:3px}
  .nav-link[aria-current="page"]{background:rgba(198,244,50,.10)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:600px){
  .wrap{padding-inline:18px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .site-footer{padding-block:48px 0}
}

/* --- 无障碍动效 --- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
  .reveal,[data-reveal]{opacity:1;transform:none}
}

/* --- 首屏占位（页面专属 CSS 会继续覆盖） --- */
.stage{position:relative;isolation:isolate}
.stage-glow{
  position:absolute;inset:-10% -20% auto -20%;height:120%;
  background:
    radial-gradient(48% 44% at 18% 26%,rgba(198,244,50,.20),transparent 70%),
    radial-gradient(42% 40% at 82% 12%,rgba(255,106,26,.16),transparent 70%),
    radial-gradient(52% 48% at 60% 88%,rgba(127,227,255,.13),transparent 72%);
  filter:blur(10px);z-index:-1;pointer-events:none;
}