/* ============================================================
   玩球体育 · /assets/site.css
   共享层：reset ｜ 变量 ｜ 中文排版 ｜ 页头 ｜ 页脚 ｜ 通用组件
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root{
  --bg:#0A1836;
  --bg-panel:#0F2249;
  --bg-night:#050B1A;
  --ridge:#1E3A6E;
  --ink:#F4F7FF;
  --mute:#9FB3D9;
  --green:#35F2A0;
  --green-deep:#0FD98A;
  --gold:#FFC663;
  --coral:#FF6B57;

  --line:rgba(159,179,217,.16);
  --line-strong:rgba(159,179,217,.32);
  --green-soft:rgba(53,242,160,.12);

  --rail:1240px;
  --gutter:clamp(18px,4vw,56px);
  --header-space:clamp(86px,7.6vw,106px);
  --header-h:74px;

  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --ease:cubic-bezier(.2,.7,.3,1);
  --cut:20px;
  --scroll-progress:0;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-space) + 12px);
}
body{
  margin:0;
  padding-top:var(--header-space);
  background:
    radial-gradient(1180px 620px at 80% -6%, rgba(53,242,160,.10), transparent 62%),
    radial-gradient(980px 560px at 6% 10%, rgba(30,58,110,.55), transparent 70%),
    var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,svg,video,canvas{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;padding:0;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--green);outline-offset:3px;border-radius:4px;}
::selection{background:var(--green);color:#04160E;}

/* ---------- 3. 中文排版与文字组件 ---------- */
.display{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(40px,7vw,104px);
  line-height:1.05;
  letter-spacing:-.02em;
  color:var(--ink);
}
.display--mid{font-size:clamp(30px,4.4vw,58px);line-height:1.12;letter-spacing:-.01em;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--green);
  font-weight:700;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--green);}
.eyebrow--gold{color:var(--gold);}
.eyebrow--gold::before{background:var(--gold);}
.prose{
  max-width:68ch;
  line-height:1.8;
  color:var(--mute);
  font-size:16.5px;
}
.prose p + p{margin-top:1em;}
.prose strong{color:var(--ink);font-weight:700;}
.prose a{color:var(--green);border-bottom:1px solid rgba(53,242,160,.4);}
.note-vertical{
  writing-mode:vertical-rl;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--mute);
  line-height:1;
}
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  letter-spacing:-.01em;
  font-weight:700;
}
.skip-link{
  position:fixed;
  top:8px;
  left:8px;
  z-index:200;
  padding:10px 18px;
  border-radius:999px;
  background:var(--green);
  color:#04160E;
  font-size:14px;
  font-weight:700;
  transform:translateY(-160%);
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0);}

/* ---------- 4. 布局容器 ---------- */
.shell{
  width:100%;
  max-width:calc(var(--rail) + var(--gutter) * 2);
  margin:0 auto;
  padding:0 var(--gutter);
}
.section{padding:clamp(48px,7vw,110px) 0;position:relative;}
.section--tight{padding:clamp(30px,4vw,64px) 0;}
.grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2vw,28px);
}
.col-3{grid-column:span 3;}
.col-4{grid-column:span 4;}
.col-5{grid-column:span 5;}
.col-6{grid-column:span 6;}
.col-7{grid-column:span 7;}
.col-8{grid-column:span 8;}
.col-9{grid-column:span 9;}
.col-12{grid-column:span 12;}

/* ---------- 5. 基础组件 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 24px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--green),var(--green-deep));
  color:#04160E;
}
.btn-primary:hover{transform:translateY(-2px);}
.btn-ghost{
  border:1px solid var(--line-strong);
  color:var(--ink);
}
.btn-ghost:hover{border-color:var(--green);color:var(--green);}

.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--mute);
}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li + li::before{content:"/";color:rgba(159,179,217,.45);}
.crumbs a:hover{color:var(--green);}
.crumbs [aria-current="page"]{color:var(--ink);}

.panel-cut{
  position:relative;
  padding:clamp(18px,2.4vw,30px);
  background:linear-gradient(155deg,rgba(15,34,73,.94),rgba(10,24,54,.86));
  border:1px solid var(--line);
  clip-path:polygon(20px 0,100% 0,100% calc(100% - 20px),calc(100% - 20px) 100%,0 100%,0 20px);
}

/* 图片容器基础规则（页面阶段放入 <img> 即可） */
.media{
  position:relative;
  overflow:hidden;
  aspect-ratio:var(--ratio,16/9);
  background:var(--bg-panel);
  clip-path:polygon(22px 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%,0 22px);
}
.media > img{width:100%;height:100%;object-fit:cover;}
.media--pitch{
  background:
    linear-gradient(180deg,rgba(10,24,54,.15),rgba(5,11,26,.78)),
    repeating-linear-gradient(90deg,rgba(53,242,160,.09) 0 1px,transparent 1px 12.5%),
    radial-gradient(120% 80% at 50% 112%,rgba(53,242,160,.18),transparent 62%),
    var(--bg-panel);
}
.media--star{
  background:
    radial-gradient(circle at 18% 26%,rgba(244,247,255,.85) 0 1.4px,transparent 1.7px),
    radial-gradient(circle at 62% 14%,rgba(244,247,255,.62) 0 1.2px,transparent 1.5px),
    radial-gradient(circle at 82% 46%,rgba(255,198,99,.85) 0 1.5px,transparent 1.8px),
    radial-gradient(circle at 36% 74%,rgba(244,247,255,.55) 0 1.2px,transparent 1.5px),
    radial-gradient(circle at 74% 84%,rgba(53,242,160,.85) 0 1.6px,transparent 1.9px),
    radial-gradient(120% 90% at 50% 120%,rgba(30,58,110,.9),transparent 66%),
    var(--bg-night);
  background-size:220px 220px,180px 180px,260px 260px,200px 200px,240px 240px,100% 100%,100% 100%;
}
.media--motion{
  background:
    linear-gradient(115deg,transparent 0 45%,rgba(53,242,160,.55) 45% 46.2%,transparent 46.2%),
    linear-gradient(115deg,transparent 0 58%,rgba(255,198,99,.42) 58% 59%,transparent 59%),
    linear-gradient(115deg,transparent 0 36%,rgba(159,179,217,.22) 36% 36.5%,transparent 36.5%),
    linear-gradient(155deg,rgba(30,58,110,.88),rgba(5,11,26,.95));
}

/* 入场动效协议 */
[data-reveal]{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
[data-reveal][data-revealed="true"]{opacity:1;transform:none;}

/* ---------- 6. 页头：悬浮胶囊浮岛 ---------- */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:90;
  padding:clamp(10px,1.4vw,18px) var(--gutter) 0;
  pointer-events:none;
  transition:padding .22s var(--ease);
}
.header-rail{
  pointer-events:auto;
  position:relative;
  max-width:var(--rail);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,24px);
  padding:9px 16px;
  background:linear-gradient(120deg,rgba(15,34,73,.95),rgba(10,24,54,.90));
  border:1px solid var(--line);
  clip-path:polygon(20px 0,100% 0,100% calc(100% - 20px),calc(100% - 20px) 100%,0 100%,0 20px);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  box-shadow:inset 0 1px 0 rgba(244,247,255,.06);
  transition:padding .22s var(--ease),background .22s var(--ease);
}
.site-header[data-collapsed="true"] .header-rail{padding:5px 14px;}
.site-header[data-collapsed="true"] .brand-line{display:none;}
.site-header[data-collapsed="true"] .brand-mark{width:26px;height:26px;}

.brand{
  display:flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
}
.brand-mark{
  position:relative;
  width:32px;
  height:32px;
  flex:0 0 auto;
  display:grid;
  place-items:center;
  border-radius:9px 2px 9px 2px;
  background:linear-gradient(140deg,var(--green),var(--green-deep));
  overflow:hidden;
  transition:width .22s var(--ease),height .22s var(--ease);
}
.brand-mark::before{
  content:"";
  position:absolute;
  left:50%;
  top:0;
  bottom:0;
  width:1px;
  background:rgba(5,11,26,.45);
}
.brand-mark-core{
  position:relative;
  z-index:1;
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--bg-night);
  box-shadow:0 0 0 2px rgba(255,198,99,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:16px;font-weight:900;letter-spacing:.02em;color:var(--ink);}
.brand-line{font-size:10.5px;letter-spacing:.16em;color:var(--mute);}

.nav-capsule{
  flex:1 1 auto;
  display:flex;
  justify-content:center;
  align-items:center;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
  padding:4px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(30,58,110,.30);
}
.nav-list a{
  display:block;
  padding:7px clamp(10px,1.1vw,15px);
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  color:var(--mute);
  white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-list a:hover{color:var(--ink);background:var(--green-soft);}
.nav-list a[aria-current="page"]{
  color:#04160E;
  font-weight:700;
  background:var(--green);
  box-shadow:0 0 0 1px rgba(53,242,160,.5),0 8px 20px rgba(53,242,160,.22);
}
.nav-foot{display:none;}
.nav-foot-link{
  display:block;
  padding:12px 14px;
  border-radius:10px;
  font-size:15px;
  color:var(--mute);
  background:rgba(30,58,110,.34);
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-foot-link:hover{color:var(--ink);background:rgba(30,58,110,.6);}
.nav-foot-link--cta{
  color:#04160E;
  font-weight:700;
  background:linear-gradient(135deg,var(--green),var(--green-deep));
}

.header-actions{
  display:flex;
  align-items:center;
  gap:6px;
  flex:0 0 auto;
}
.action-link{
  padding:7px 10px;
  border-radius:8px;
  font-size:14px;
  color:var(--mute);
  transition:color .18s var(--ease);
}
.action-link:hover{color:var(--ink);}
.action-cta{
  padding:9px 17px;
  border-radius:999px;
  font-size:14px;
  font-weight:700;
  color:#04160E;
  white-space:nowrap;
  background:linear-gradient(135deg,var(--green),var(--green-deep));
  transition:transform .18s var(--ease),filter .18s var(--ease);
}
.action-cta:hover{transform:translateY(-1px);filter:brightness(1.08);}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:8px 14px 8px 13px;
  border:1px solid var(--line-strong);
  border-radius:999px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--ink);
  background:rgba(30,58,110,.5);
  flex:0 0 auto;
  transition:border-color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--green);}
.nav-toggle-box{width:18px;display:grid;gap:5px;}
.nav-toggle-box span{
  display:block;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .22s var(--ease),opacity .18s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(1){transform:translateY(3.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg);}
.nav-toggle-text{line-height:1;}

.scroll-track{
  display:block;
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:rgba(159,179,217,.10);
  overflow:hidden;
}
.scroll-track-bar{
  display:block;
  height:100%;
  transform-origin:0 50%;
  transform:scaleX(var(--scroll-progress));
  background:linear-gradient(90deg,var(--green),var(--gold));
  transition:transform .12s linear;
}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(64px,9vw,132px);
  background:linear-gradient(180deg,rgba(5,11,26,.5),var(--bg-night) 34%);
  border-top:1px solid var(--line);
  color:var(--mute);
  font-size:14px;
}
.footer-slash{
  height:clamp(36px,5vw,74px);
  background:linear-gradient(100deg,rgba(30,58,110,0) 0%,rgba(30,58,110,.7) 36%,rgba(53,242,160,.18) 62%,rgba(30,58,110,0) 100%);
  clip-path:polygon(0 100%,100% 0,100% 100%);
}
.footer-rail{
  max-width:calc(var(--rail) + var(--gutter) * 2);
  margin:0 auto;
  padding:clamp(36px,5vw,66px) var(--gutter) clamp(26px,3vw,42px);
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.5fr;
  gap:clamp(24px,3vw,48px);
}
.footer-brand{min-width:0;}
.footer-summary{
  margin-top:16px;
  max-width:36ch;
  line-height:1.8;
  color:var(--mute);
}
.footer-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  padding:5px 13px;
  border:1px solid rgba(255,198,99,.45);
  border-radius:999px;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--gold);
}
.footer-chip::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--gold);
  box-shadow:0 0 10px var(--gold);
}
.footer-col-title{
  margin-bottom:14px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--gold);
}
.footer-links li + li{margin-top:9px;}
.footer-links a{
  color:var(--mute);
  transition:color .18s var(--ease);
}
.footer-links a:hover{color:var(--green);}
.footer-links--plain li{
  font-size:13.5px;
  line-height:1.7;
  color:var(--mute);
}
.footer-note{
  margin-top:12px;
  font-size:12px;
  line-height:1.7;
  color:rgba(159,179,217,.72);
  max-width:32ch;
}
.footer-base{
  max-width:calc(var(--rail) + var(--gutter) * 2);
  margin:0 auto;
  padding:18px var(--gutter) 30px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:rgba(159,179,217,.8);
}
.footer-base-links{display:flex;flex-wrap:wrap;gap:16px;}
.footer-base-links a{transition:color .18s var(--ease);}
.footer-base-links a:hover{color:var(--green);}

/* ---------- 8. 响应式 ---------- */
@media (max-width:1140px){
  .nav-toggle{display:inline-flex;}
  .header-actions{display:none;}

  .nav-capsule{
    position:fixed;
    top:calc(var(--header-h,74px) + 6px);
    left:var(--gutter);
    right:var(--gutter);
    flex-direction:column;
    align-items:stretch;
    gap:12px;
    padding:14px;
    max-height:calc(100vh - var(--header-h,74px) - 28px);
    overflow-y:auto;
    background:linear-gradient(160deg,rgba(15,34,73,.99),rgba(10,24,54,.99));
    border:1px solid var(--line-strong);
    clip-path:polygon(22px 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%,0 22px);
    box-shadow:0 30px 70px rgba(3,8,20,.72);
    opacity:0;
    visibility:hidden;
    transform:translateY(-12px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
    pointer-events:auto;
  }
  .nav-capsule[data-open="true"]{opacity:1;visibility:visible;transform:none;}
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:0;
    border:0;
    border-radius:0;
    background:none;
  }
  .nav-list a{padding:13px 14px;font-size:16px;border-radius:10px;}
  .nav-list a[aria-current="page"]{border-radius:10px;box-shadow:none;}
  .nav-foot{
    display:grid;
    gap:8px;
    padding-top:12px;
    border-top:1px solid var(--line);
  }
}

@media (max-width:1024px){
  .footer-rail{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}

@media (max-width:900px){
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9{grid-column:span 12;}
  .brand-line{display:none;}
}

@media (max-width:640px){
  body{font-size:15.5px;}
  .footer-rail{grid-template-columns:1fr;gap:28px;}
  .footer-summary{max-width:none;}
  .footer-note{max-width:none;}
  .footer-base{justify-content:flex-start;}
  .nav-toggle-text{display:none;}
  .nav-toggle{padding:8px 12px;}
  .media{--cut:16px;}
}

/* ---------- 9. 可访问性与动效降级 ---------- */
@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 !important;transform:none !important;}
  .scroll-track-bar{transition:none;}
}