/* ============================================================
   竞博中心 · 共享样式 /assets/site.css
   版本控制室视觉母题 · 赛季制双色体系
   ============================================================ */

/* ---------- 1 · reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dd,table,th,td{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;border-spacing:0}
h1,h2,h3,h4,h5{font-size:inherit;font-weight:inherit}

/* ---------- 2 · tokens ---------- */
:root{
  --ink-900:#0A1A2F;
  --ink-700:#143758;
  --ink-500:#35618C;
  --paper-050:#F5F7F9;
  --paper-100:#E6EBF1;
  --signal:#FF6A2B;
  --signal-deep:#E8571A;
  --orange-100:#FFDCCB;
  --mint:#1FBF96;
  --mint-050:#D9F4EC;
  --sand:#C2AE92;
  --amber:#E8A33D;
  --slate:#6B7C8F;

  --line:rgba(10,26,47,.14);
  --line-strong:rgba(10,26,47,.30);
  --line-dark:rgba(230,235,241,.18);

  --font-display:"Helvetica Neue","Arial Narrow",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --shell:1240px;
  --gutter:clamp(18px,4vw,56px);
  --section-gap:clamp(56px,8vw,104px);
  --radius:2px;
  --shadow-1:0 1px 0 rgba(10,26,47,.04),0 10px 28px -20px rgba(10,26,47,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 3 · base ---------- */
body{
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  color:var(--ink-900);
  background:var(--paper-050);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
::selection{background:var(--orange-100);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px;border-radius:var(--radius)}
#main-content{display:block;scroll-margin-top:118px}
.mono{font-family:var(--font-mono);font-weight:500;letter-spacing:.02em;font-variant-numeric:tabular-nums}
p{max-width:72ch}

.skip-link{
  position:absolute;left:var(--gutter);top:-60px;z-index:200;
  display:inline-block;padding:10px 16px;
  background:var(--ink-900);color:#fff;
  font-size:13px;letter-spacing:.1em;border-radius:var(--radius);
  transition:top .18s var(--ease);
}
.skip-link:focus{top:10px}

/* ---------- 4 · shell ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}

/* ---------- 5 · 赛季状态条 ---------- */
.season-rail{height:4px;width:100%;background:var(--signal)}
.season-rail[data-season="prepare"]{background:var(--sand)}
.season-rail[data-season="open"]{background:var(--signal)}
.season-rail[data-season="review"]{background:var(--mint)}
.season-rail[data-season="archive"]{background:var(--ink-900)}

/* ---------- 6 · header ---------- */
.site-header{position:sticky;top:0;z-index:60}

.brand-layer{
  background:rgba(245,247,249,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(150%) blur(8px);
}
.brand-layer__inner{display:flex;align-items:center;gap:clamp(12px,2vw,28px);min-height:66px}

.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink-900)}
.brand__mark{
  position:relative;flex:none;
  width:34px;height:34px;display:grid;place-items:center;
  background:var(--ink-900);color:var(--paper-050);
  font-family:var(--font-display);font-size:16px;font-weight:800;letter-spacing:.02em;
  border-radius:var(--radius);
}
.brand__mark::after{content:"";position:absolute;right:-4px;bottom:-4px;width:6px;height:6px;background:var(--signal)}
.brand__text{display:flex;flex-direction:column;line-height:1.25}
.brand__name{font-family:var(--font-display);font-size:19px;font-weight:800;letter-spacing:.08em}
.brand__tagline{font-size:11px;letter-spacing:.14em;color:var(--slate)}

.status-cluster{margin-left:auto;display:flex;align-items:center;gap:12px}
.status-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 11px;border:1px solid var(--line);border-radius:999px;
  background:#fff;color:var(--ink-700);
  font-size:12px;letter-spacing:.08em;white-space:nowrap;
}
.status-chip__dot{width:7px;height:7px;border-radius:50%;background:var(--signal);box-shadow:0 0 0 3px var(--orange-100)}
.status-chip--prepare .status-chip__dot{background:var(--sand);box-shadow:0 0 0 3px rgba(194,174,146,.28)}
.status-chip--open .status-chip__dot{background:var(--signal);box-shadow:0 0 0 3px var(--orange-100)}
.status-chip--review .status-chip__dot{background:var(--mint);box-shadow:0 0 0 3px var(--mint-050)}
.status-chip--archive .status-chip__dot{background:var(--ink-900);box-shadow:0 0 0 3px var(--paper-100)}
.status-meta{font-size:11.5px;letter-spacing:.1em;color:var(--slate);white-space:nowrap}

/* 通用按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;border:1px solid transparent;border-radius:var(--radius);
  font-size:13px;font-weight:500;letter-spacing:.08em;white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn--signal{background:var(--signal);color:#fff}
.btn--signal:hover{background:var(--signal-deep)}
.btn--signal:active{transform:translateY(1px)}
.btn--ghost{border-color:var(--line-strong);color:var(--ink-900);background:transparent}
.btn--ghost:hover{border-color:var(--signal);color:var(--signal);background:var(--orange-100)}
.header-cta{flex:none}

/* 移动端栏目按钮 */
.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:8px 11px;border:1px solid var(--line-strong);border-radius:var(--radius);
  font-size:12px;letter-spacing:.12em;color:var(--ink-700);
}
.nav-toggle__bars{display:grid;gap:4px;width:16px;flex:none}
.nav-toggle__bars span{display:block;height:1.5px;background:currentColor;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"]{border-color:var(--signal);color:var(--signal)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child{transform:translateY(2.75px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child{transform:translateY(-2.75px) rotate(-45deg)}

/* 栏目甲板 */
.nav-layer{background:var(--ink-700);color:var(--paper-050);border-bottom:1px solid rgba(0,0,0,.3)}
.nav-layer__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:48px}
.nav-list{display:flex;align-items:center;gap:clamp(14px,2.4vw,34px);flex-wrap:wrap}
.nav-list a{
  position:relative;display:inline-block;padding:14px 2px;
  font-size:13px;letter-spacing:.14em;color:rgba(245,247,249,.78);
  transition:color .2s var(--ease);
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:8px;height:2px;
  background:var(--signal);transform:scaleX(0);transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-list a:hover{color:#fff}
.nav-list a:hover::after{transform:scaleX(1)}
.nav-list a[aria-current="page"]{color:#fff}
.nav-list a[aria-current="page"]::after{transform:scaleX(1)}
.nav-coord{font-size:11px;letter-spacing:.14em;color:rgba(245,247,249,.5);white-space:nowrap}

/* ---------- 7 · 正文容器与页头 ---------- */
main{display:block}
.page-head{padding-block:clamp(40px,6vw,80px) clamp(28px,4vw,48px);border-bottom:1px solid var(--line)}
.page-head__kicker{
  display:inline-flex;align-items:center;gap:10px;
  margin-bottom:18px;font-size:12px;letter-spacing:.16em;color:var(--slate);
}
.page-head__kicker::before{content:"";width:26px;height:1px;background:var(--signal)}
.page-head__title{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(2.4rem,6vw,5.2rem);line-height:.98;letter-spacing:-.02em;
  color:var(--ink-900);max-width:20ch;
}
.page-head__lede{margin-top:22px;font-size:17px;color:var(--ink-700);max-width:70ch}

.section{padding-block:var(--section-gap)}
.section--paper{background:var(--paper-050)}
.section--paper-100{background:var(--paper-100)}
.section--ink{background:var(--ink-900);color:var(--paper-050)}
.section--ink h2,.section--ink h3,.section--ink h4{color:#fff}
.section--ink .page-head__lede,.section--ink p{color:rgba(245,247,249,.78)}

.breadcrumb{padding-block:14px;border-bottom:1px solid var(--line);font-size:12px;letter-spacing:.1em;color:var(--slate)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb__sep{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--signal)}

/* ---------- 8 · 栅格与分屏 ---------- */
.split{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,9fr);gap:clamp(24px,4vw,56px);align-items:start}
.split--aside{grid-template-columns:minmax(0,4fr) minmax(0,8fr)}
.split--even{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.stack{display:grid;gap:clamp(16px,2.4vw,32px);align-content:start}
.ticks{height:8px;border-bottom:1px solid var(--line);background-image:repeating-linear-gradient(90deg,var(--line-strong) 0 1px,transparent 1px 8px)}

/* ---------- 9 · 面板 / 抽屉 ---------- */
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1)}
.panel__head{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:15px 20px;border-bottom:1px solid var(--line);background:var(--paper-100);
  font-size:12px;letter-spacing:.14em;color:var(--ink-700);
}
.panel__body{padding:20px}
.panel__body > * + *{margin-top:14px}

/* ---------- 10 · 图例 / 标签 ---------- */
.legend{display:flex;flex-wrap:wrap;gap:12px 20px}
.legend__item{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.1em;color:var(--slate)}
.legend__swatch{width:12px;height:12px;flex:none;border:1px solid var(--line-strong);background:var(--paper-100)}
.legend__swatch--signal{background:var(--signal);border-color:var(--signal)}
.legend__swatch--mint{background:var(--mint);border-color:var(--mint)}
.legend__swatch--sand{background:var(--sand);border-color:var(--sand)}
.legend__swatch--amber{background:var(--amber);border-color:var(--amber)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--paper-100);color:var(--ink-700);
  font-size:11.5px;letter-spacing:.1em;white-space:nowrap;
}
.tag--signal{background:var(--orange-100);border-color:rgba(255,106,43,.42);color:#96390F}
.tag--mint{background:var(--mint-050);border-color:rgba(31,191,150,.42);color:#0C6349}
.tag--sand{background:rgba(194,174,146,.22);border-color:rgba(194,174,146,.65);color:#6B5A40}
.tag--amber{background:rgba(232,163,61,.18);border-color:rgba(232,163,61,.6);color:#87590F}

/* ---------- 11 · 图像容器基础规则 ---------- */
.media-frame{margin:0;border:1px solid var(--line);background:var(--paper-100);overflow:hidden}
.media-frame__inner{
  position:relative;width:100%;padding-top:56.25%;
  background:
    repeating-linear-gradient(135deg,rgba(53,97,140,.14) 0 1px,transparent 1px 9px),
    linear-gradient(160deg,var(--ink-700),var(--ink-900));
}
.media-frame__inner > img,
.media-frame__inner > svg,
.media-frame__inner > picture{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.media-frame__caption{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding:10px 14px;border-top:1px solid var(--line);background:#fff;
  font-size:11.5px;letter-spacing:.1em;color:var(--slate);
}
.media-frame--21x9 .media-frame__inner{padding-top:42.86%}
.media-frame--4x3 .media-frame__inner{padding-top:75%}
.media-frame--1x1 .media-frame__inner{padding-top:100%}

/* ---------- 12 · 表格 ---------- */
.table-wrap{
  position:relative;overflow-x:auto;-webkit-overflow-scrolling:touch;
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-1);
  scrollbar-width:thin;scrollbar-color:var(--ink-500) transparent;
}
.data-table{width:100%;min-width:640px;font-size:14.5px}
.data-table th,.data-table td{padding:12px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.data-table thead th{
  background:var(--ink-700);color:var(--paper-050);
  font-size:12px;font-weight:500;letter-spacing:.12em;white-space:nowrap;
}
.data-table tbody tr:nth-child(even){background:var(--paper-050)}
.data-table tbody tr:hover{background:var(--orange-100)}
.data-table td .mono{color:var(--ink-900)}
.data-table caption{padding:12px 16px;text-align:left;font-size:12px;letter-spacing:.14em;color:var(--slate)}

/* ---------- 13 · 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s var(--ease),transform .24s var(--ease)}
.reveal.is-revealed{opacity:1;transform:none}
html:not(.js) .reveal{opacity:1;transform:none}

.progress-rail{
  position:fixed;top:0;right:0;z-index:70;
  width:3px;height:100vh;pointer-events:none;
  background:rgba(10,26,47,.07);
}
.progress-rail__bar{width:100%;height:0;background:var(--signal)}

/* ---------- 14 · footer ---------- */
.site-footer{
  margin-top:var(--section-gap);
  background:var(--ink-900);color:var(--paper-050);
  padding-top:clamp(46px,6vw,76px);
  border-top:4px solid var(--ink-700);
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,3fr) minmax(0,5fr);
  gap:clamp(28px,4vw,64px);
  padding-bottom:clamp(30px,4vw,54px);
  border-bottom:1px solid var(--line-dark);
}
.footer-brand{display:grid;gap:16px;align-content:start}
.brand--footer{color:var(--paper-050)}
.brand--footer .brand__mark{background:var(--signal);color:var(--ink-900)}
.brand--footer .brand__mark::after{background:var(--mint)}
.brand--footer .brand__tagline{color:rgba(230,235,241,.62)}
.footer-note{font-size:13.5px;line-height:1.7;color:rgba(230,235,241,.68);max-width:40ch}
.footer-icp{font-size:11.5px;letter-spacing:.1em;color:rgba(230,235,241,.5)}
.footer-col__title{
  position:relative;margin-bottom:18px;padding-bottom:10px;
  font-size:12px;font-weight:500;letter-spacing:.16em;color:rgba(245,247,249,.55);
}
.footer-col__title::after{content:"";position:absolute;left:0;bottom:0;width:22px;height:1px;background:var(--signal)}
.footer-links{display:grid;gap:10px}
.footer-links a,.footer-links span{font-size:14px;color:rgba(230,235,241,.84)}
.footer-links a{transition:color .2s var(--ease)}
.footer-links a:hover{color:var(--signal)}
.footer-contact .footer-note{margin-top:16px}
.footer-cta{margin-top:18px}
.site-footer .btn--ghost{color:var(--paper-050);border-color:var(--line-dark)}
.site-footer .btn--ghost:hover{color:var(--signal);border-color:var(--signal);background:rgba(255,106,43,.12)}

.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding-block:20px;border-bottom:1px solid var(--line-dark);
}
.legal-links{display:flex;flex-wrap:wrap;gap:24px;font-size:12.5px;letter-spacing:.1em}
.legal-links a{color:rgba(230,235,241,.72);transition:color .2s var(--ease)}
.legal-links a:hover{color:var(--signal)}
.footer-season{padding-block:18px 28px;font-size:11.5px;letter-spacing:.12em;color:rgba(230,235,241,.45)}

/* ---------- 15 · 响应式 ---------- */
@media (max-width:1080px){
  .footer-grid{grid-template-columns:minmax(0,5fr) minmax(0,4fr);}
  .footer-contact{grid-column:1 / -1}
}
@media (max-width:920px){
  .nav-toggle{display:inline-flex}
  .header-cta{display:none}
  .status-meta{display:none}
  .nav-layer{display:none}
  .nav-layer[data-open]{display:block}
  .nav-layer__inner{flex-direction:column;align-items:stretch;gap:0;padding-block:6px 18px;min-height:0}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li + li{border-top:1px solid var(--line-dark)}
  .nav-list a{padding:14px 2px;font-size:15px;letter-spacing:.1em}
  .nav-list a::after{right:auto;width:26px;bottom:7px}
  .nav-coord{display:none}
  .split,.split--aside,.split--even{grid-template-columns:minmax(0,1fr)}
  .progress-rail{display:none}
}
@media (max-width:620px){
  body{font-size:16px}
  .brand__tagline{display:none}
  .brand-layer__inner{min-height:60px}
  .status-chip{font-size:11px;padding:4px 9px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:34px}
  .footer-legal{flex-direction:column;align-items:flex-start;gap:12px}
  .legal-links{gap:18px}
  .page-head__title{max-width:100%}
}

/* ---------- 16 · 无障碍动效降级 ---------- */
@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{opacity:1;transform:none}
  .progress-rail__bar{transition:none}
}