/* ===== KAIYUN体育官方品牌站 全站共享样式 ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;overflow-x:hidden}
h1,h2,h3,h4,h5,h6,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0;margin:0;padding:0}
[hidden]{display:none!important}

:root{
  --color-deep:#0B1D33;
  --color-deep-l:#102945;
  --color-carbon:#071120;
  --color-neon:#B4F342;
  --color-alert:#F23B32;
  --color-cream:#F5F0E4;
  --color-ink:#101722;
  --color-steel:#64788C;
  --color-line:#D9D2C4;
  --font-head:"Arial Black",Arial,"Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-data:"SF Mono","IBM Plex Mono",Consolas,"Liberation Mono","Courier New",monospace;
  --shadow-card:10px 10px 0 var(--color-deep);
  --shadow-sm:6px 6px 0 var(--color-deep);
  --radius:2px;
  --site-pad:24px;
}

body{
  font:16px/1.75 var(--font-body);
  color:var(--color-ink);
  background-color:var(--color-cream);
  background-image:
    linear-gradient(rgba(11,29,51,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(11,29,51,.035) 1px,transparent 1px);
  background-size:44px 44px;
}
#main-content{display:block;min-height:60vh}
.container{max-width:1240px;margin:0 auto;padding:0 var(--site-pad);width:100%}
h1,h2,h3,h4,h5,h6{line-height:1.15;color:var(--color-deep)}
a{color:var(--color-deep);text-decoration-thickness:2px;text-underline-offset:2px}
a:hover{color:var(--color-alert)}
::selection{background:var(--color-neon);color:var(--color-deep)}
:focus-visible{outline:3px solid var(--color-neon);outline-offset:2px}

/* ===== 页头标题组件 ===== */
.page-hero{position:relative;padding:56px 0 40px}
.page-hero-title{font:900 clamp(42px,9vw,96px)/0.95 var(--font-head);text-transform:uppercase;letter-spacing:-.01em;color:var(--color-deep);max-width:10ch;margin:0}
.page-hero-lead{margin-top:20px;font-size:18px;line-height:1.7;color:var(--color-steel);max-width:46ch}
.page-title{font:900 clamp(38px,8vw,84px)/0.98 var(--font-head);letter-spacing:.005em;color:var(--color-deep);text-transform:uppercase;margin:16px 0 12px}
.lead{font-size:18px;line-height:1.7;color:var(--color-steel);max-width:54ch;margin-bottom:0}

/* ===== 章节标题 ===== */
.section-head{margin:0 0 32px;padding-left:18px;border-left:4px solid var(--color-neon)}
.section-index{display:block;font:600 12px/1.4 var(--font-data);letter-spacing:.2em;text-transform:uppercase;color:var(--color-steel);margin-bottom:8px}
.section-title{font:900 clamp(28px,4vw,40px)/1.08 var(--font-head);color:var(--color-deep)}
.section-desc{margin-top:10px;font-size:15px;line-height:1.7;color:var(--color-steel);max-width:60ch}
.section-head.is-dark .section-index{color:var(--color-neon)}
.section-head.is-dark .section-title{color:var(--color-cream)}

/* ===== 面包屑 ===== */
.crumb{margin:20px 0 28px}
.crumb ol{display:flex;flex-wrap:wrap;gap:4px;font:600 13px var(--font-data)}
.crumb li{display:inline-flex;align-items:center;color:var(--color-steel)}
.crumb li+li::before{content:"/";margin:0 8px;color:var(--color-steel);opacity:.6}
.crumb a{color:var(--color-steel);text-decoration:none}
.crumb a:hover{color:var(--color-deep);background:var(--color-neon)}
.crumb [aria-current="page"]{color:var(--color-deep);font-weight:700}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border:2px solid var(--color-deep);border-radius:var(--radius);background:var(--color-cream);color:var(--color-deep);font:700 15px var(--font-body);text-decoration:none;box-shadow:var(--shadow-sm);cursor:pointer;transition:background-color .16s,color .16s,border-color .16s,box-shadow .16s,transform .16s}
.btn:hover{background:var(--color-neon);color:var(--color-deep);border-color:var(--color-deep);box-shadow:3px 3px 0 var(--color-deep);transform:translate(3px,3px)}
.btn:active{transform:translate(6px,6px);box-shadow:0 0 0 var(--color-deep)}
.btn--primary{background:var(--color-neon)}
.btn--alert{background:var(--color-alert);color:var(--color-cream);border-color:var(--color-ink)}
.btn--alert:hover{background:var(--color-deep);color:var(--color-neon)}
.btn--ghost{background:transparent;color:var(--color-cream);border-color:rgba(245,240,228,.7);box-shadow:6px 6px 0 rgba(0,0,0,.3)}
.btn--ghost:hover{background:var(--color-neon);color:var(--color-deep);border-color:var(--color-neon)}

/* ===== 卡片/标签/数据组件 ===== */
.k-card{background:var(--color-cream);border:2px solid var(--color-deep);border-radius:var(--radius);box-shadow:var(--shadow-card);transition:box-shadow .16s,transform .16s}
.k-card:hover{box-shadow:8px 8px 0 var(--color-neon)}
.k-card-head{padding:14px 18px;border-bottom:2px solid var(--color-deep);display:flex;align-items:center;justify-content:space-between;gap:12px}
.card-title{font:800 16px var(--font-head);color:var(--color-deep)}
.k-card-body{padding:18px}
.k-tag{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border:1.5px solid var(--color-deep);border-radius:var(--radius);background:var(--color-cream);color:var(--color-deep);font:600 12px var(--font-data);letter-spacing:.06em;text-decoration:none;transition:background-color .16s,color .16s,border-color .16s}
.k-tag::before{content:"#";color:var(--color-alert);font-weight:900}
.k-tag:hover{background:var(--color-neon)}
.k-tag--alert{border-color:var(--color-alert);color:var(--color-alert)}
.k-tag--alert::before{content:"!"}
.k-tag--alert:hover{background:var(--color-alert);color:var(--color-cream)}
.k-tag--dark{background:var(--color-deep);color:var(--color-neon);border-color:var(--color-deep)}
.k-tag--dark:hover{background:var(--color-carbon);color:var(--color-neon)}
.data-num{font:700 clamp(20px,3vw,28px)/1 var(--font-data);color:var(--color-deep);letter-spacing:.02em}
.data-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;background:var(--color-neon);color:var(--color-deep);border:1.5px solid var(--color-deep);border-radius:var(--radius);font:700 12px var(--font-data)}
.data-badge::before{content:"";width:6px;height:6px;background:var(--color-deep);border-radius:50%}
.data-badge--alert{background:var(--color-alert);color:var(--color-cream);border-color:var(--color-deep)}
.data-badge--dark{background:var(--color-deep);color:var(--color-neon);border-color:var(--color-carbon)}
.data-list{border:2px solid var(--color-deep);border-radius:var(--radius);background:var(--color-cream)}
.data-list li{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:12px 16px;border-bottom:1px solid var(--color-line)}
.data-list li:last-child{border-bottom:0}
.data-list-k{font:600 12px var(--font-data);letter-spacing:.1em;text-transform:uppercase;color:var(--color-steel)}
.data-list-v{font:700 15px var(--font-data);color:var(--color-deep)}

/* ===== 条带/网格/图片 ===== */
.band-dark{background:var(--color-deep);color:var(--color-cream);border:2px solid var(--color-deep);border-radius:var(--radius);box-shadow:var(--shadow-card);padding:28px}
.band-dark .section-title{color:var(--color-cream)}
.band-dark .section-index{color:var(--color-neon)}
.band-alert{background:var(--color-alert);color:var(--color-cream);border:2px solid var(--color-deep);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:14px 18px;display:flex;align-items:center;gap:12px;font:700 14px var(--font-body)}
.band-alert::before{content:"!";font:900 20px/1 var(--font-data);background:var(--color-cream);color:var(--color-alert);padding:4px 8px;border:2px solid var(--color-deep)}
.data-line{border:0;height:4px;margin:36px 0;background:linear-gradient(90deg,var(--color-deep) 0 18%,var(--color-neon) 18% 58%,var(--color-alert) 58% 78%,transparent 78% 100%)}
.grid-split{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:40px;align-items:start}
.rail{border:2px solid var(--color-deep);border-radius:var(--radius);box-shadow:var(--shadow-card);background:var(--color-cream)}
.rail-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 16px;background:var(--color-deep);color:var(--color-cream);font:700 13px var(--font-data);letter-spacing:.12em}
.rail-count{font-family:var(--font-data);font-weight:700;color:var(--color-neon)}
.rail-list li{border-bottom:1px solid var(--color-line)}
.rail-list li:last-child{border-bottom:0}
.rail-list a{display:flex;align-items:baseline;justify-content:space-between;gap:10px;padding:12px 16px;text-decoration:none;color:var(--color-ink);font:500 14px var(--font-body);transition:background-color .16s,color .16s}
.rail-list a:hover{background:var(--color-neon);color:var(--color-deep)}
.rail-list .data-num{font-size:15px}
.img-frame{position:relative;overflow:hidden;border:2px solid var(--color-deep);border-radius:var(--radius);box-shadow:var(--shadow-sm);background:repeating-linear-gradient(135deg,var(--color-deep-l) 0 14px,var(--color-deep) 14px 28px);min-height:120px}
.img-frame::after{content:attr(data-img-label);position:absolute;right:10px;bottom:8px;font:700 11px/1 var(--font-data);letter-spacing:.16em;color:var(--color-neon);background:var(--color-carbon);border:1px solid rgba(180,243,66,.45);padding:5px 8px}
.img-frame--hero{aspect-ratio:16/7}
.img-frame--wide{aspect-ratio:16/9}
.img-frame--square{aspect-ratio:4/3}
.img-frame--tall{aspect-ratio:3/4}

/* ===== 头部命令栏 ===== */
.skip-link{position:fixed;top:-80px;left:16px;z-index:600;background:var(--color-neon);color:var(--color-deep);border:2px solid var(--color-deep);box-shadow:4px 4px 0 var(--color-alert);padding:10px 16px;font:700 14px var(--font-body);text-decoration:none;transition:top .18s}
.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:500;background:var(--color-deep);color:var(--color-cream)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:linear-gradient(90deg,var(--color-neon) 0 72%,var(--color-alert) 72% 84%,rgba(180,243,66,.15) 84% 100%)}
.header-bar{position:relative;display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--color-cream);flex-shrink:0}
.brand:hover{color:var(--color-neon)}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;background:var(--color-neon);color:var(--color-deep);border:2px solid var(--color-cream);box-shadow:3px 3px 0 var(--color-alert);font:900 20px/1 var(--font-data)}
.brand-text{display:flex;flex-direction:column;line-height:1.15;font:900 17px var(--font-head);letter-spacing:.02em}
.brand-text em{font:600 10px var(--font-data);font-style:normal;letter-spacing:.22em;text-transform:uppercase;color:var(--color-steel);margin-top:2px}
.site-nav{margin-left:0}
.nav-list{display:flex;align-items:stretch;gap:2px}
.nav-item{display:flex;align-items:stretch}
.nav-link{display:flex;align-items:baseline;gap:6px;padding:26px 12px 20px;color:rgba(245,240,228,.86);font:700 14px var(--font-body);text-decoration:none;border-bottom:3px solid transparent;transition:color .16s,border-color .16s,background-color .16s}
.nav-label{display:inline-block}
.nav-num{font:600 10px var(--font-data);color:var(--color-neon);opacity:.55}
.nav-link:hover{color:var(--color-neon);background:rgba(180,243,66,.06);border-bottom-color:var(--color-alert)}
.nav-link:hover .nav-num{opacity:1}
.nav-link[aria-current="page"]{color:var(--color-neon);border-bottom-color:var(--color-neon)}
.nav-link[aria-current="page"] .nav-num{opacity:1;color:var(--color-alert)}
.nav-toggle{display:none;align-items:center;gap:8px;padding:10px 12px;background:transparent;border:1.5px solid rgba(245,240,228,.45);border-radius:var(--radius);color:var(--color-cream);font:700 13px var(--font-body);cursor:pointer}
.nav-toggle:hover{border-color:var(--color-neon);color:var(--color-neon)}
.nav-toggle-box{display:flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle-box i{display:block;height:2px;background:currentColor;transition:transform .18s,opacity .18s}
.nav-toggle[aria-expanded="true"] .nav-toggle-box i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-box i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-box i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-toggle-text{font:700 13px var(--font-body)}
.header-actions{position:relative;display:flex;align-items:center;flex-shrink:0}
.status-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;background:transparent;border:1.5px solid rgba(245,240,228,.45);border-radius:var(--radius);color:var(--color-cream);font:700 13px var(--font-data);cursor:pointer;transition:border-color .16s,color .16s,background-color .16s}
.status-btn:hover{color:var(--color-neon);border-color:var(--color-neon);background:rgba(180,243,66,.08)}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--color-neon);box-shadow:0 0 0 1px rgba(180,243,66,.4);flex-shrink:0}
.status-text{font:700 13px var(--font-data);color:inherit}
.status-pop{position:absolute;top:calc(100% + 14px);right:0;width:250px;background:var(--color-deep-l);border:2px solid var(--color-neon);border-radius:var(--radius);box-shadow:10px 10px 0 rgba(0,0,0,.4);z-index:700}
.status-list{padding:10px 16px}
.status-list li{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px dashed rgba(245,240,228,.18)}
.status-list li:last-child{border-bottom:0}
.status-k{font:600 11px var(--font-data);letter-spacing:.12em;text-transform:uppercase;color:rgba(245,240,228,.6)}
.status-v{font:700 14px var(--font-data);color:var(--color-neon)}
.status-pop-foot{margin:0;padding:9px 16px;border-top:1px solid rgba(245,240,228,.18);font:500 11px var(--font-data);line-height:1.6;color:rgba(245,240,228,.55)}
.scroll-progress{position:fixed;top:0;left:0;width:100%;height:4px;background:var(--color-neon);transform:scaleX(0);transform-origin:0 50%;z-index:900;pointer-events:none}

/* ===== 页脚档案区 ===== */
.site-footer{position:relative;background:var(--color-deep);color:var(--color-cream);margin-top:88px;border-top:3px solid var(--color-alert);clip-path:polygon(0 0,calc(100% - 44px) 0,100% 44px,100% 100%,0 100%)}
.foot-grid{display:grid;grid-template-columns:1.25fr .9fr 1.1fr;gap:44px;padding:60px 0 44px}
.foot-col{min-width:0}
.foot-col--contact{display:flex;flex-direction:column;align-items:flex-start}
.foot-title{font:700 13px var(--font-data);letter-spacing:.2em;text-transform:uppercase;color:var(--color-neon);margin:0 0 16px;padding-bottom:10px;border-bottom:1px solid rgba(245,240,228,.18)}
.brand-footer{margin-bottom:4px}
.foot-icp{font:600 12px var(--font-data);letter-spacing:.1em;color:rgba(245,240,228,.5);margin:14px 0 0}
.foot-statement{font-size:13px;line-height:1.8;color:rgba(245,240,228,.6);max-width:44ch;margin:10px 0 0}
.foot-links{display:grid;grid-template-columns:1fr 1fr;gap:4px 20px}
.foot-links a{display:inline-block;padding:4px 0;color:rgba(245,240,228,.78);font-size:14px;text-decoration:none;transition:color .16s,transform .16s}
.foot-links a::before{content:"▸";color:var(--color-neon);margin-right:6px;font-family:var(--font-data)}
.foot-links a:hover{color:var(--color-neon);transform:translateX(3px)}
.foot-contact{display:grid;gap:12px}
.foot-contact li{font-size:14px;line-height:1.6;color:rgba(245,240,228,.82)}
.foot-k{display:block;font:600 10px var(--font-data);letter-spacing:.18em;text-transform:uppercase;color:rgba(245,240,228,.42);margin-bottom:2px}
.foot-v{font:500 14px var(--font-data);color:rgba(245,240,228,.88)}
.foot-cta{margin-top:18px}
.foot-note-tip{margin:14px 0 0;font:500 11px var(--font-data);line-height:1.6;color:rgba(245,240,228,.4)}
.foot-bar{background:var(--color-carbon);border-top:1px solid rgba(245,240,228,.12)}
.foot-note{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;padding:16px 0;font:500 12px var(--font-data);color:rgba(245,240,228,.5)}
.foot-copy{color:rgba(245,240,228,.38)}

/* ===== 响应式 ===== */
@media (max-width:980px){
  .header-bar{min-height:64px}
  .nav-toggle{display:inline-flex}
  .site-nav{position:absolute;top:100%;left:50%;width:100vw;margin-left:-50vw;background:var(--color-carbon);border-bottom:2px solid var(--color-neon);max-height:0;overflow:hidden;opacity:0;transition:max-height .24s ease,opacity .2s ease}
  .site-nav[data-open]{max-height:calc(100vh - 64px);overflow:auto;opacity:1}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 20px;max-width:1240px;margin:0 auto}
  .nav-item{display:block}
  .nav-link{justify-content:flex-start;padding:13px 10px;border-bottom:1px solid rgba(245,240,228,.12);border-left:3px solid transparent}
  .nav-link:hover{border-bottom-color:rgba(245,240,228,.12);border-left-color:var(--color-neon)}
  .nav-link[aria-current="page"]{border-left-color:var(--color-neon);border-bottom-color:rgba(245,240,228,.12)}
  .grid-split{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-brand{grid-column:1 / -1}
  .img-frame--hero{aspect-ratio:16/9}
}
@media (max-width:600px){
  :root{--site-pad:16px}
  .brand-text{font-size:15px}
  .brand-mark{width:32px;height:32px;font-size:17px}
  .status-text{display:none}
  .nav-toggle-text{display:none}
  .status-btn{padding:9px 10px}
  .header-bar{gap:8px}
  .foot-grid{grid-template-columns:1fr}
  .foot-brand{grid-column:auto}
  .foot-note{flex-direction:column;gap:6px}
  .data-list li{flex-direction:column;gap:4px}
  .img-frame--hero{aspect-ratio:4/3}
}

/* ===== 静态与可访问性 ===== */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .scroll-progress{display:none}
}