/* ============ K体育赛事 共享样式 /assets/site.css ============ */

/* ---- reset ---- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;background:#05070F}
body{margin:0;background:var(--ink);color:var(--text);font-family:var(--font-sans);font-size:15.5px;line-height:1.75;font-weight:400;letter-spacing:.01em;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img,svg,video,canvas{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit}
[hidden]{display:none!important}
::selection{background:var(--signal);color:#04140D}

/* ---- 变量 ---- */
:root{
  --ink:#05070F;
  --ink-2:#0B1226;
  --panel:#101B36;
  --line:#22305A;
  --signal:#3DF2A4;
  --mint:#A6FFDA;
  --green-deep:#0F5C42;
  --orange:#FF7A2F;
  --cyan-a:#23D3FF;
  --cyan-b:#1B5BFF;
  --text:#EAF0FA;
  --muted:#8C9AB8;
  --idle:#2A3760;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
  --shell-max:1320px;
  --gutter:clamp(1rem,4vw,3rem);
  --radius-card:14px;
}

/* ---- 焦点 ---- */
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:6px}

/* ---- 跳转链接 ---- */
.skip-link{position:absolute;left:1rem;top:-3.6rem;z-index:200;background:var(--signal);color:#04140D;padding:.6rem 1rem;font-size:13px;letter-spacing:.06em;text-decoration:none;border-radius:0 0 12px 12px;transition:top .22s var(--ease)}
.skip-link:focus{top:0}

/* ---- 排版基底 ---- */
.display-title{font-size:clamp(44px,7vw,104px);line-height:.95;letter-spacing:.02em;font-weight:600;color:var(--text)}
.prose{max-width:34em}
.prose p+p{margin-top:.9em}
.eyebrow{font-size:12px;line-height:1.6;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.index-num{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--muted);font-variant-numeric:tabular-nums}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ---- 容器与网格 ---- */
.wrap{width:100%;max-width:var(--shell-max);margin-inline:auto;padding-inline:var(--gutter)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(1rem,2.4vw,2rem)}

/* ---- 章节头 ---- */
.section-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:.6rem 1.25rem;border-top:1px solid var(--line);padding-top:1rem;margin-bottom:clamp(1.2rem,3vw,2rem)}
.section-head__title{font-size:clamp(22px,2.6vw,34px);font-weight:500;letter-spacing:.01em;line-height:1.2;margin:0}
.section-head__note{margin-left:auto;font-size:12px;letter-spacing:.08em;color:var(--muted)}

/* ---- 按钮 ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;padding:.58rem 1.15rem;border:1px solid var(--line);border-radius:999px;background:rgba(16,27,54,.65);color:var(--text);font-size:13px;line-height:1.4;letter-spacing:.08em;text-decoration:none;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .24s var(--ease)}
.btn--signal{background:var(--signal);border-color:var(--signal);color:#04140D;font-weight:600}
.btn--signal:hover{background:var(--mint);border-color:var(--mint);transform:translateY(-1px);box-shadow:0 10px 26px rgba(61,242,164,.22)}
.btn--ghost{background:transparent;color:var(--muted)}
.btn--ghost:hover{color:var(--mint);border-color:var(--signal);background:rgba(15,92,66,.18)}

/* ============ 头部 ============ */
.site-header{position:sticky;top:0;z-index:80;background:rgba(5,7,15,.9);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.head-band{overflow:hidden;max-height:92px;border-bottom:1px solid var(--line);transition:max-height .3s var(--ease),opacity .22s linear,border-color .3s var(--ease)}
.head-band__inner{display:flex;align-items:center;gap:1.25rem;padding:.62rem 0}
.head-band__brand{display:inline-flex;align-items:baseline;gap:.55rem;font-size:13px;letter-spacing:.1em;color:var(--text);text-decoration:none;white-space:nowrap}
.head-band__brand-mark{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--signal)}
.head-band__note{flex:1;min-width:0;font-size:12px;line-height:1.6;letter-spacing:.06em;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.head-band__cta{flex:none}
.site-header[data-scrolled="true"] .head-band{max-height:0;opacity:0;border-color:transparent}

.head-nav{position:relative}
.head-nav__inner{display:flex;align-items:center;gap:.75rem;padding:.5rem 0}
.nav{flex:1;min-width:0}
.nav__list{display:flex;align-items:center;gap:.2rem;padding:.24rem;border:1px solid var(--line);border-radius:999px;background:rgba(11,18,38,.72);overflow-x:auto;scrollbar-width:none}
.nav__list::-webkit-scrollbar{display:none}
.nav__item{flex:none}
.nav__link{display:inline-block;padding:.42rem .92rem;border:1px solid transparent;border-radius:999px;font-size:13.5px;letter-spacing:.06em;color:var(--muted);text-decoration:none;white-space:nowrap;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease)}
.nav__link:hover{color:var(--text);background:rgba(16,27,54,.92);border-color:var(--idle)}
.nav__link[aria-current="page"]{color:var(--mint);border-color:var(--signal);background:rgba(15,92,66,.3);box-shadow:0 0 0 1px rgba(61,242,164,.08)}
.head-nav__progress{position:absolute;left:0;right:0;bottom:0;height:2px;transform-origin:0 50%;transform:scaleX(var(--progress,0));background:linear-gradient(90deg,var(--cyan-a),var(--cyan-b) 55%,var(--signal));transition:transform .1s linear;pointer-events:none}

.nav-toggle{display:none;align-items:center;gap:.55rem;flex:none;padding:.5rem .95rem;background:rgba(16,27,54,.75);border:1px solid var(--line);border-radius:999px;color:var(--text);font-size:13px;letter-spacing:.08em;cursor:pointer;transition:border-color .2s var(--ease),color .2s var(--ease)}
.nav-toggle:hover{border-color:var(--signal);color:var(--mint)}
.nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle__bar{display:block;height:1.5px;background:var(--signal);border-radius:2px;transition:transform .24s var(--ease),opacity .2s var(--ease)}
.site-header[data-open="true"] .nav-toggle__bar:first-child{transform:translateY(2.75px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bar:last-child{transform:translateY(-2.75px) rotate(-45deg)}

/* ---- 侧边快捷入口 ---- */
.side-rail{position:fixed;right:0;top:50%;transform:translateY(-50%);z-index:70}
.side-rail__list{display:flex;flex-direction:column;gap:.3rem;padding:.5rem .4rem;background:rgba(11,18,38,.86);border:1px solid var(--line);border-right:0;border-radius:16px 0 0 16px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.side-rail__item{display:flex}
.side-rail__link{writing-mode:vertical-rl;letter-spacing:.3em;font-size:12px;color:var(--muted);text-decoration:none;padding:.85rem .4rem;border:1px solid transparent;border-radius:10px;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease)}
.side-rail__link:hover{color:var(--mint);background:rgba(16,27,54,.95);border-color:var(--idle)}

/* ============ 页脚 ============ */
.site-footer{position:relative;margin-top:clamp(3rem,8vw,6.5rem);background:var(--ink-2);border-top:1px solid var(--line)}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--signal) 22%,var(--cyan-b) 78%,transparent);opacity:.55}
.footer__inner{padding-block:clamp(2.2rem,5vw,3.6rem) 1.5rem}
.footer__top{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.7fr);gap:clamp(1.6rem,4vw,3.5rem);padding-bottom:clamp(1.6rem,4vw,2.6rem);border-bottom:1px solid var(--line)}
.footer__brand-line{font-size:clamp(15px,1.5vw,17px);line-height:1.6;letter-spacing:.02em;color:var(--text);max-width:20em}
.footer__service{margin-top:.7rem;font-size:12px;line-height:1.7;letter-spacing:.06em;color:var(--muted);max-width:24em}
.footer__cta{margin-top:1.1rem}
.footer__columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.4rem}
.footer__col-title{margin-bottom:.75rem;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--signal)}
.footer__list{display:flex;flex-direction:column;gap:.45rem}
.footer__item{min-width:0}
.footer__link{font-size:13.5px;letter-spacing:.04em;color:var(--muted);text-decoration:none;transition:color .2s var(--ease)}
.footer__link:hover{color:var(--mint)}
.footer__meta{font-size:12.5px;line-height:1.75;letter-spacing:.03em;color:var(--muted)}
.footer__base{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem 1.5rem;padding-top:1.4rem}
.footer__legal{display:flex;flex-wrap:wrap;gap:1.1rem}
.footer__copyright{font-size:12px;letter-spacing:.06em;color:var(--muted)}
.footer__icp{color:var(--muted)}

/* ============ 通用内容组件 ============ */
/* 面包屑 */
.breadcrumb{font-size:12px;letter-spacing:.08em;color:var(--muted)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem}
.breadcrumb__item{display:flex;align-items:center;gap:.45rem;color:var(--muted)}
.breadcrumb__item+.breadcrumb__item::before{content:"/";color:var(--idle)}
.breadcrumb__link{color:var(--muted);text-decoration:none;transition:color .2s var(--ease)}
.breadcrumb__link:hover{color:var(--mint)}

/* 图片容器 */
.frame{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius-card);background:linear-gradient(150deg,var(--panel),var(--ink-2));isolation:isolate}
.frame__media{width:100%;height:100%;object-fit:cover;display:block}
.frame::after{content:"";position:absolute;inset:0;z-index:2;pointer-events:none;background:linear-gradient(200deg,rgba(5,7,15,0) 38%,rgba(5,7,15,.78))}
.frame__caption{position:absolute;left:0;right:0;bottom:0;z-index:3;padding:1rem 1.1rem;font-size:12px;letter-spacing:.1em;color:var(--muted)}
.frame--portrait{aspect-ratio:3/4}
.frame--wide{aspect-ratio:16/9}
.frame--square{aspect-ratio:1/1}
.frame--tilt{clip-path:polygon(0 0,100% 3%,100% 100%,0 97%)}

/* 数据卡 */
.data-card{position:relative;overflow:hidden;padding:1rem 1.1rem;border:1px solid var(--line);border-radius:var(--radius-card);background:linear-gradient(160deg,rgba(16,27,54,.92),rgba(11,18,38,.82));box-shadow:0 12px 32px rgba(0,0,0,.32)}
.data-card::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:linear-gradient(90deg,var(--cyan-a),var(--cyan-b));opacity:.85}
.data-card__label{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.data-card__value{display:block;margin-top:.35rem;font-family:var(--font-mono);font-size:1.5em;line-height:1.2;letter-spacing:-.01em;color:var(--mint)}

/* chips 筛选 */
.chip-row{display:flex;flex-wrap:wrap;gap:.5rem}
.chip{appearance:none;cursor:pointer;padding:.42rem .95rem;border:1px solid var(--line);border-radius:999px;background:rgba(11,18,38,.6);color:var(--muted);font-size:12.5px;letter-spacing:.06em;transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease)}
.chip:hover{color:var(--text);border-color:var(--idle);transform:translateY(-1px)}
.chip[aria-pressed="true"]{color:var(--mint);border-color:var(--signal);background:rgba(15,92,66,.32)}

/* 可展开组 */
.fold{border-top:1px solid var(--line)}
.fold:last-of-type{border-bottom:1px solid var(--line)}
.fold__head{display:flex;align-items:center;gap:1rem;width:100%;padding:1.05rem 0;background:none;border:0;color:var(--text);font-size:15.5px;text-align:left;cursor:pointer;transition:color .2s var(--ease)}
.fold__head:hover{color:var(--mint)}
.fold__mark{margin-left:auto;font-family:var(--font-mono);font-size:16px;line-height:1;color:var(--signal);transition:transform .24s var(--ease)}
.fold[data-open="true"] .fold__mark{transform:rotate(45deg)}
.fold__body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s var(--ease)}
.fold__body>div{overflow:hidden;min-height:0}
.fold[data-open="true"] .fold__body{grid-template-rows:1fr}

/* 滚动显现 */
html.js [data-reveal]{opacity:0;transform:translateY(8px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
html.js [data-reveal].is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .nav-toggle{display:inline-flex}
  .head-band__note{display:none}
  .nav{position:absolute;left:var(--gutter);right:var(--gutter);top:100%;padding-top:.4rem;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s linear}
  .nav[data-open="true"]{opacity:1;visibility:visible;transform:none}
  .nav__list{flex-direction:column;align-items:stretch;gap:.2rem;padding:.5rem;border-radius:16px;max-height:min(70vh,520px);overflow-y:auto;box-shadow:0 20px 50px rgba(0,0,0,.5)}
  .nav__link{display:block;padding:.7rem .9rem;border-radius:12px;text-align:left}
}
@media (max-width:860px){
  body{padding-bottom:3.4rem}
  .side-rail{top:auto;bottom:0;left:0;right:0;transform:none}
  .side-rail__list{flex-direction:row;justify-content:space-around;gap:.25rem;padding:.35rem .5rem;border-radius:0;border-left:0;border-right:0;border-bottom:0}
  .side-rail__link{flex:1;writing-mode:horizontal-tb;text-align:center;letter-spacing:.08em;padding:.55rem .6rem}
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .head-band__cta{display:none}
  .head-band__inner{padding:.5rem 0}
  .footer__top{grid-template-columns:minmax(0,1fr)}
  .footer__columns{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__col--contact{grid-column:1/-1}
}
@media (max-width:560px){
  .footer__columns{grid-template-columns:minmax(0,1fr)}
  .site-footer{margin-top:3rem}
  .section-head__note{margin-left:0}
}

/* ============ 动效降级 ============ */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html.js [data-reveal]{opacity:1;transform:none}
  .head-nav__progress{transition:none}
}