/* 8868体育赛场 · 共享样式 /assets/site.css */

:root{
  --void:#070E24;
  --indigo:#101A44;
  --paper:#F2E9D8;
  --brown:#1B1410;
  --cyan:#2CE8D8;
  --violet:#7B4DFF;
  --orange:#FF6A2B;
  --slate:#8C97B8;
  --line:#2A3556;
  --alert:#E2453C;
  --mute:#5C6A93;
  --wrap:1280px;
  --gutter:clamp(16px,4vw,44px);
  --radius:2px;
  --font-display:"Archivo Black","Inter Tight","PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-heading:"Inter Tight","PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-body:"Inter","PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:150px;
}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}

body{
  background-color:var(--void);
  background-image:
    linear-gradient(to right,rgba(140,151,184,.055) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(140,151,184,.045) 1px,transparent 1px);
  background-size:72px 72px;
  background-attachment:fixed;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--font-heading);font-weight:800;line-height:1.18;color:var(--paper)}
p{max-width:42em}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 容器与栅格 ---------- */
.wrap{width:min(calc(100% - var(--gutter) * 2),var(--wrap));margin-inline:auto}
.page-main{display:block;position:relative;z-index:1}
.section{padding:64px 0}
.section--tight{padding:34px 0}
.grid{display:grid;gap:var(--gap,24px)}
.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.split{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,6fr);gap:var(--gap,40px)}
.split--reverse{grid-template-columns:minmax(0,6fr) minmax(0,4fr)}

/* ---------- 通用文字 ---------- */
.lead{font-size:clamp(16px,1.4vw,18px);line-height:1.85;color:#C6CFE6;max-width:62ch}
.muted{color:var(--slate)}
.mono,.mono-text,.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.num{text-align:right}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:9px 16px;border-radius:var(--radius);
  font-family:var(--font-heading);font-weight:700;font-size:14px;letter-spacing:.04em;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--orange);color:var(--void);box-shadow:0 6px 18px rgba(255,106,43,.22)}
.btn-primary:hover{box-shadow:0 12px 26px rgba(255,106,43,.34)}
.btn-cyan{border-color:var(--cyan);color:var(--cyan);background:rgba(44,232,216,.06)}
.btn-cyan:hover{background:rgba(44,232,216,.16)}
.btn-ghost{border-color:var(--line);color:var(--paper);background:rgba(242,233,216,.04)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-cta{padding:8px 14px;font-size:13px}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;left:16px;top:-64px;z-index:120;
  padding:10px 16px;background:var(--cyan);color:var(--void);
  font-family:var(--font-heading);font-weight:700;font-size:14px;border-radius:var(--radius);
  transition:top .2s ease;
}
.skip-link:focus{top:10px}

/* ---------- 页面头部外壳 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,rgba(7,14,36,.985),rgba(7,14,36,.94));
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:box-shadow .3s ease;
}
.site-header[data-scrolled="true"]{box-shadow:0 14px 34px rgba(0,0,0,.55)}

.read-progress{position:absolute;left:0;top:0;width:100%;height:2px;background:rgba(140,151,184,.14);overflow:hidden}
.read-progress-bar{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--violet),var(--cyan));box-shadow:0 0 12px rgba(44,232,216,.75)}

/* 实时状态轨 */
.header-rail{
  overflow:hidden;max-height:56px;
  border-bottom:1px solid rgba(42,53,86,.75);
  background:linear-gradient(90deg,rgba(16,26,68,.72),rgba(7,14,36,.3));
  transition:max-height .38s ease,opacity .3s ease;
}
.site-header[data-scrolled="true"] .header-rail{max-height:0;opacity:0;border-bottom-color:transparent}
.rail-inner{display:flex;align-items:center;gap:20px;min-height:34px;padding:4px 0;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--mute)}
.rail-item{white-space:nowrap}
.rail-item--end{margin-left:auto}
.rail-status{display:inline-flex;align-items:center;gap:8px;color:var(--slate)}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--alert);animation:pulse 2.4s ease-out infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(226,69,60,.55)}
  70%{box-shadow:0 0 0 10px rgba(226,69,60,0)}
  100%{box-shadow:0 0 0 0 rgba(226,69,60,0)}
}

/* 报头 */
.masthead{padding:20px 0 16px;transition:padding .3s ease}
.site-header[data-scrolled="true"] .masthead{padding:9px 0 8px}
.masthead-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px}
.edition{display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;color:var(--mute);
  transition:opacity .25s ease,visibility .25s ease}
.edition-rule{width:34px;height:1px;background:var(--line)}
.site-header[data-scrolled="true"] .edition{opacity:0;visibility:hidden}

.brand{display:flex;flex-direction:column;align-items:center;gap:5px;text-align:center}
.brand-name{display:flex;align-items:baseline;gap:.26em;font-family:var(--font-display);font-weight:900;
  font-size:clamp(26px,3.3vw,44px);line-height:1;letter-spacing:.01em;color:var(--paper);
  transition:font-size .3s ease}
.brand-mark{color:var(--cyan);text-shadow:0 0 24px rgba(44,232,216,.38)}
.site-header[data-scrolled="true"] .brand-name{font-size:clamp(20px,2.1vw,26px)}
.brand-sub{font-family:var(--font-mono);font-size:11px;letter-spacing:.3em;color:var(--mute);
  max-height:22px;transition:opacity .25s ease,max-height .25s ease}
.site-header[data-scrolled="true"] .brand-sub{opacity:0;max-height:0;overflow:hidden}
.brand:hover .brand-mark{text-shadow:0 0 30px rgba(44,232,216,.7)}

.masthead-utility{display:flex;align-items:center;justify-content:flex-end;gap:14px}
.lang-tag{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--slate);
  border:1px solid var(--line);border-radius:var(--radius);padding:3px 8px}
.icon-btn{display:grid;place-items:center;width:34px;height:34px;border:1px solid var(--line);
  border-radius:var(--radius);color:var(--slate);
  transition:color .2s ease,border-color .2s ease,box-shadow .2s ease}
.icon-btn:hover{color:var(--cyan);border-color:var(--cyan);box-shadow:0 0 0 1px rgba(44,232,216,.25)}

/* 栏目行 */
.nav-row{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(16,26,68,.6),rgba(7,14,36,.15))}
.nav-inner{display:flex;align-items:center;justify-content:center;min-height:46px;gap:12px}
.site-nav{width:100%}
.nav-list{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;counter-reset:nav}
.nav-list>li{display:flex}
.nav-list>li+li{border-left:1px solid rgba(42,53,86,.65)}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:7px;padding:13px 18px;
  font-family:var(--font-heading);font-weight:700;font-size:15px;letter-spacing:.06em;color:var(--slate);
  transition:color .2s ease,background-color .2s ease}
.nav-link::before{counter-increment:nav;content:counter(nav,decimal-leading-zero);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:#3E4A73;transition:color .2s ease}
.nav-link:hover{color:var(--paper);background:rgba(44,232,216,.06)}
.nav-link:hover::before{color:var(--slate)}
.nav-link[aria-current="page"]{color:var(--cyan)}
.nav-link[aria-current="page"]::before{color:var(--violet)}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:16px;right:16px;bottom:0;height:2px;
  background:var(--cyan);box-shadow:0 0 10px rgba(44,232,216,.75)}

.nav-toggle{display:none;align-items:center;gap:8px;padding:8px 12px;border:1px solid var(--line);
  border-radius:var(--radius);color:var(--slate);font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  transition:color .2s ease,border-color .2s ease}
.nav-toggle:hover{color:var(--paper);border-color:var(--slate)}
.nav-toggle[aria-expanded="true"]{color:var(--cyan);border-color:var(--cyan)}
.nav-toggle-bars{position:relative;display:block;width:16px;height:9px}
.nav-toggle-bars::before,.nav-toggle-bars::after{content:"";position:absolute;left:0;width:100%;height:1.5px;
  background:currentColor;transition:transform .25s ease}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(3.75px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-3.75px) rotate(-45deg)}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:9px;padding:18px 0;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--mute)}
.crumbs li{display:flex;align-items:center;gap:9px}
.crumbs li+li::before{content:"/";color:var(--line)}
.crumbs a{color:var(--slate);transition:color .2s ease}
.crumbs a:hover{color:var(--cyan)}
.crumbs [aria-current="page"]{color:var(--paper)}

/* ---------- 章节与框景 ---------- */
.chapter{position:relative;padding:64px 0}
.chapter-head{display:flex;align-items:baseline;gap:18px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding-top:18px;margin-bottom:30px;
  transition:border-color .4s ease}
.chapter-num{font-family:var(--font-mono);font-size:13px;letter-spacing:.22em;color:var(--mute);
  transition:color .4s ease,transform .4s ease}
.chapter-title{font-family:var(--font-display);font-weight:900;font-size:clamp(28px,4.2vw,48px);
  line-height:1.05;letter-spacing:-.01em}
.chapter-sub{margin-top:12px;font-size:15px;color:var(--slate);max-width:62ch}
.chapter.is-active .chapter-head{border-top-color:var(--cyan)}
.chapter.is-active .chapter-num{color:var(--cyan);transform:translateX(-4px)}

.frame{position:relative;border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(16,26,68,.62),rgba(7,14,36,.2))}
.frame::before,.frame::after{content:"";position:absolute;width:14px;height:14px;border:1px solid var(--cyan);opacity:.85}
.frame::before{top:-1px;left:-1px;border-right:0;border-bottom:0}
.frame::after{bottom:-1px;right:-1px;border-left:0;border-top:0}
.frame-inner{padding:clamp(20px,3vw,42px)}
.tick-strip{height:10px;border-bottom:1px solid var(--line);
  background-image:repeating-linear-gradient(90deg,var(--line) 0 1px,transparent 1px 12px)}

/* ---------- 卡片与面板 ---------- */
.panel{background:var(--indigo);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.panel:hover{transform:translateY(-4px);border-color:rgba(44,232,216,.55);
  box-shadow:0 14px 34px rgba(0,0,0,.5),0 0 0 1px rgba(44,232,216,.18)}
.panel-title{font-family:var(--font-heading);font-weight:800;font-size:19px;color:var(--paper)}
.panel-text{margin-top:8px;font-size:15px;color:var(--slate)}

/* ---------- 图片容器 ---------- */
.media{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(140deg,#0C1636,#131E4B 46%,#070E24)}
.media::after{content:"";position:absolute;inset:0;pointer-events:none;mix-blend-mode:screen;
  background:
    radial-gradient(120% 90% at 78% 10%,rgba(44,232,216,.22),transparent 56%),
    radial-gradient(90% 80% at 8% 92%,rgba(123,77,255,.24),transparent 60%)}
.media img,.media svg,.media video{width:100%;height:100%;object-fit:cover}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--3x2{aspect-ratio:3/2}
.media--1x1{aspect-ratio:1/1}
.media--21x9{aspect-ratio:21/9}
.media--slant{clip-path:polygon(0 0,100% 0,100% 86%,0 100%)}
.media-stack{display:grid;gap:18px}
.media-caption{margin-top:10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--mute)}

/* ---------- 奶油纸索引表 ---------- */
.paper{background:var(--paper);color:var(--brown);border:1px solid #D8CBB2;border-radius:var(--radius);
  padding:14px 0;overflow-x:auto}
.paper-table{min-width:520px;font-size:14px}
.paper-table th{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:#6B5B49;text-align:left;padding:10px 16px;border-bottom:1px solid #D8CBB2;white-space:nowrap}
.paper-table td{padding:10px 16px;border-bottom:1px solid #E7DCC8;color:var(--brown)}
.paper-table tbody tr:last-child td{border-bottom:0}
.paper-table tbody tr:hover{background:#EDE1CC}
.paper-table .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 筛选芯片 ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border:1px solid var(--line);
  border-radius:var(--radius);background:rgba(16,26,68,.55);color:var(--slate);font-size:13px;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease}
.chip:hover{border-color:var(--cyan);color:var(--paper)}
.chip[aria-pressed="true"]{border-color:var(--violet);color:var(--paper);background:rgba(123,77,255,.16);
  box-shadow:inset 0 0 0 1px rgba(123,77,255,.35)}

/* ---------- 数字统计 ---------- */
.stat{display:flex;flex-direction:column;gap:6px}
.stat-value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(24px,3vw,34px);color:var(--cyan);line-height:1.1}
.stat-label{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--mute)}

/* ---------- 可展开节点 / 技能树 ---------- */
.collapse,.tree-node{padding:12px 0;border-bottom:1px solid var(--line)}
.collapse-panel,.tree-panel{display:none;padding-top:10px}
.collapse[data-open] .collapse-panel,.tree-node[data-open] .tree-panel{display:block}
.tree{position:relative;padding-left:26px;border-left:1px solid var(--line)}
.tree-node{position:relative;border-bottom:1px solid rgba(42,53,86,.7)}
.tree-node::before{content:"";position:absolute;left:-32px;top:20px;width:11px;height:11px;
  border:1px solid var(--violet);background:var(--void);transform:rotate(45deg);transition:.25s ease}
.tree-node[data-open]::before{background:var(--cyan);border-color:var(--cyan);box-shadow:0 0 14px rgba(44,232,216,.6)}
.tree-btn,.collapse-trigger{display:flex;width:100%;align-items:center;justify-content:space-between;gap:14px;
  text-align:left;font-family:var(--font-heading);font-weight:700;font-size:17px;color:var(--paper)}
.tree-btn:hover,.collapse-trigger:hover{color:var(--cyan)}
.collapse-trigger::after,.tree-btn::after{content:"+";font-family:var(--font-mono);font-size:15px;color:var(--cyan)}
[aria-expanded="true"].collapse-trigger::after,[aria-expanded="true"].tree-btn::after{content:"–"}

/* ---------- 显现 ---------- */
html.js [data-reveal]{opacity:0;transform:translateY(14px);
  transition:opacity .6s ease,transform .6s ease}
html.js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;margin-top:72px;padding-top:56px;
  background:linear-gradient(180deg,#0A1230,var(--void) 62%);
  border-top:1px solid var(--line);
  color:var(--slate);
}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan),transparent);opacity:.6}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:34px;padding-bottom:40px}
.footer-col{min-width:0}
.footer-brand{font-family:var(--font-display);font-weight:900;font-size:23px;letter-spacing:.02em;color:var(--paper)}
.footer-tagline{margin-top:12px;font-size:14px;line-height:1.8;color:var(--slate);max-width:30ch}
.footer-meta{margin-top:14px;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--mute)}
.footer-heading{font-family:var(--font-mono);font-size:11px;font-weight:400;letter-spacing:.26em;
  color:var(--cyan);padding-bottom:10px;border-bottom:1px solid var(--line);margin-bottom:16px}
.footer-list li+li{margin-top:9px}
.footer-link{font-size:14px;color:var(--slate);transition:color .2s ease}
.footer-link:hover{color:var(--cyan)}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;line-height:1.7}
.footer-contact li+li{margin-top:10px}
.footer-label{flex:0 0 34px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--mute);padding-top:4px}
.footer-value{color:var(--slate);word-break:break-word}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  border-top:1px solid var(--line);padding:18px 0 30px}
.footer-copy{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--mute)}
.footer-legal{display:flex;gap:20px}
.footer-legal a{font-size:12px;font-family:var(--font-mono);letter-spacing:.1em;color:var(--mute);
  transition:color .2s ease}
.footer-legal a:hover{color:var(--cyan)}

/* ---------- 响应式 ---------- */
@media (max-width:1120px){
  .nav-link{padding:12px 13px;font-size:14px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cols-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split,.split--reverse{grid-template-columns:minmax(0,1fr);gap:28px}
}

@media (max-width:900px){
  .edition{display:none}
  .masthead-inner{grid-template-columns:minmax(0,1fr) auto;gap:12px}
  .brand{align-items:flex-start;text-align:left}
  .brand-name{font-size:clamp(22px,5vw,30px)}
  .masthead-utility{justify-content:flex-end}
  .nav-toggle{display:inline-flex}
  .nav-inner{justify-content:flex-start;min-height:44px;gap:10px}
  .site-nav{overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .site-nav::-webkit-scrollbar{display:none}
  .nav-list{flex-wrap:nowrap;justify-content:flex-start}
  .nav-link{padding:11px 12px;font-size:13.5px;white-space:nowrap}
  .nav-link[aria-current="page"]::after{left:10px;right:10px}
  .site-nav[data-open]{overflow:visible}
  .site-nav[data-open] .nav-list{flex-direction:column;align-items:stretch;flex-wrap:wrap;
    justify-content:flex-start;padding:6px 0 10px}
  .site-nav[data-open] .nav-list>li{border-left:0}
  .site-nav[data-open] .nav-list>li+li{border-top:1px solid rgba(42,53,86,.6)}
  .site-nav[data-open] .nav-link{width:100%;justify-content:flex-start;padding:12px 6px}
  .site-nav[data-open] .nav-link[aria-current="page"]::after{
    left:0;right:auto;top:9px;bottom:9px;width:3px;height:auto}
}

@media (max-width:640px){
  html{scroll-padding-top:132px}
  .section{padding:44px 0}
  .chapter{padding:44px 0}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px}
  .cols-2,.cols-3,.cols-4{grid-template-columns:minmax(0,1fr)}
  .lang-tag{display:none}
  .brand-sub{font-size:10px;letter-spacing:.22em}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-copy{font-size:11px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important}
  .status-dot{animation:none;box-shadow:0 0 0 3px rgba(226,69,60,.25)}
  .panel:hover,.btn:hover{transform:none}
  html.js [data-reveal]{opacity:1;transform:none}
}