/* ==========================================================================
   开心体育网 · 共享站点样式 /assets/site.css
   框架式导航 + 连续画布 + 堆叠面板
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --c-orange:#F0442E;
  --c-orange-deep:#B72A18;
  --c-cyan:#16C6D0;
  --c-cool:#5FA8BF;
  --c-gold:#F0A93C;
  --c-ink:#0C1A2B;
  --c-slate:#2C3A46;
  --c-moss:#4E7A5A;
  --c-canvas:#F7F2E6;
  --c-grid:#C6D0D6;
  --c-paper:#FFFFFF;
  --c-clay:#8C5B44;

  --rail-w:264px;
  --top-h:46px;
  --wrap:1180px;
  --gap:24px;

  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --dur-fast:120ms;
  --dur:240ms;
  --ease:cubic-bezier(0.22,1,0.36,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}
body,h1,h2,h3,h4,h5,p,ul,ol,dl,dd,figure,blockquote{margin:0}
ul,ol{list-style:none;padding:0}
img,picture,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit}
table{border-collapse:collapse}

/* ---------- 3. 基础排版 ---------- */
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background-color:var(--c-canvas);
  background-image:linear-gradient(90deg,rgba(198,208,214,.28) 1px,transparent 1px);
  background-size:80px 100%;
  padding-left:var(--rail-w);
  padding-top:var(--top-h);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{line-height:1.15;font-weight:800;letter-spacing:-.02em}
h1{font-size:clamp(36px,5.4vw,72px);letter-spacing:-.03em}
h2{font-size:clamp(26px,3.4vw,36px)}
h3{font-size:clamp(19px,2.2vw,24px)}
p{max-width:74ch}

.num,[data-num]{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  letter-spacing:-.01em;
}

.v-label{
  writing-mode:vertical-rl;
  font-size:12px;
  letter-spacing:.34em;
  color:var(--c-clay);
  font-weight:700;
}

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

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

.skip-link{
  position:fixed;
  top:10px;left:50%;
  z-index:200;
  transform:translate(-50%,-220%);
  padding:10px 18px;
  background:var(--c-cyan);
  color:var(--c-ink);
  font-size:14px;font-weight:800;
  text-decoration:none;
  transition:transform var(--dur-fast) var(--ease);
}
.skip-link:focus{transform:translate(-50%,0)}

/* ---------- 4. 容器与网格 ---------- */
.wrap{width:min(var(--wrap),100% - 48px);margin-inline:auto}
.section{padding:64px 0}
.section--tight{padding:40px 0}

.grid{display:grid;gap:var(--gap)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}

#main-content{
  display:block;
  min-height:60vh;
  position:relative;
  background:transparent;
  outline-offset:-4px;
}

/* ---------- 5. 框架式页头 ---------- */
.site-header{position:static;z-index:80}

.header-rail{
  position:fixed;
  inset:0 auto 0 0;
  z-index:86;
  width:var(--rail-w);
  display:flex;
  flex-direction:column;
  gap:26px;
  padding:22px 20px 26px;
  background:var(--c-ink);
  color:var(--c-canvas);
  border-right:1px solid rgba(198,208,214,.22);
  overflow-y:auto;
  overflow-x:hidden;
}
.header-rail::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(90deg,rgba(198,208,214,.06) 1px,transparent 1px);
  background-size:24px 100%;
}
.header-rail::after{
  content:"";
  position:absolute;
  top:0;left:0;
  width:4px;height:96px;
  background:linear-gradient(180deg,var(--c-orange),var(--c-cyan));
  pointer-events:none;
}
.header-rail > *{position:relative;z-index:1}

/* 品牌 */
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  color:inherit;
}
.brand__glyph{
  flex:none;
  width:40px;height:40px;
  display:grid;place-items:center;
  background:var(--c-orange);
  color:#fff;
  font-size:20px;font-weight:900;
  letter-spacing:-.02em;
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
}
.brand__text{display:block;min-width:0}
.brand__name{display:block;font-size:17px;font-weight:800;letter-spacing:.02em;line-height:1.3}
.brand__tag{display:block;font-size:11px;letter-spacing:.18em;color:rgba(247,242,230,.6);font-family:var(--font-mono)}

/* 竖栏导航 */
.site-nav{flex:1 1 auto}
.site-nav__list{
  counter-reset:navidx;
  display:flex;
  flex-direction:column;
  border-top:1px solid rgba(198,208,214,.18);
}
.site-nav__list li{border-bottom:1px solid rgba(198,208,214,.12)}
.site-nav__list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 12px;
  font-size:15px;
  font-weight:700;
  color:rgba(247,242,230,.78);
  text-decoration:none;
  border-left:2px solid transparent;
  transition:background var(--dur-fast) linear,color var(--dur-fast) linear,transform var(--dur-fast) var(--ease),border-color var(--dur-fast) linear;
}
.site-nav__list a::before{
  counter-increment:navidx;
  content:counter(navidx,decimal-leading-zero);
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--c-clay);
  letter-spacing:.08em;
}
.site-nav__list a:hover{
  background:rgba(22,198,208,.14);
  color:#fff;
  transform:translateX(4px);
  border-left-color:var(--c-cyan);
}
.site-nav__list a[aria-current="page"]{
  background:linear-gradient(90deg,rgba(240,68,46,.92),rgba(183,42,24,.28));
  color:#fff;
  border-left-color:var(--c-cyan);
}
.site-nav__list a[aria-current="page"]::before{color:var(--c-gold)}

.rail-note{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--c-cool);
  border-top:1px dashed rgba(198,208,214,.28);
  padding-top:14px;
}
.rail-tail{display:flex;flex-direction:column;gap:10px}

/* 顶部状态条 */
.header-topbar{
  position:fixed;
  top:0;left:var(--rail-w);right:0;
  z-index:88;
  height:var(--top-h);
  display:flex;
  align-items:center;
  gap:16px;
  padding:0 18px;
  background:var(--c-slate);
  color:var(--c-canvas);
  border-bottom:1px solid var(--c-ink);
  overflow:hidden;
}
.topbar__lead{
  flex:none;
  font-size:13px;
  font-weight:800;
  letter-spacing:.04em;
  white-space:nowrap;
}
.status-strip{
  flex:1 1 auto;
  display:flex;
  align-items:center;
  min-width:0;
  overflow-x:auto;
  scrollbar-width:none;
}
.status-strip::-webkit-scrollbar{display:none}
.status-strip li{
  flex:none;
  font-family:var(--font-mono);
  font-size:12px;
  color:rgba(247,242,230,.74);
  padding:0 14px;
  border-left:1px solid rgba(198,208,214,.22);
  white-space:nowrap;
}
.status-strip li::before{content:"◆";color:var(--c-cyan);font-size:9px;margin-right:7px;vertical-align:2px}

.brand--compact{display:none}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:7px 11px;
  border:1px solid rgba(198,208,214,.42);
  color:var(--c-canvas);
  font-size:13px;
  font-weight:800;
  letter-spacing:.08em;
  cursor:pointer;
  transition:border-color var(--dur-fast) linear,color var(--dur-fast) linear;
}
.nav-toggle:hover{border-color:var(--c-cyan);color:var(--c-cyan)}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;height:10px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;left:0;right:0;
  height:2px;
  background:var(--c-cyan);
  transition:transform var(--dur) var(--ease),top var(--dur) var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{top:8px}
.site-header[data-open] .nav-toggle__bars::before{top:4px;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle__bars::after{top:4px;transform:rotate(-45deg)}

.scroll-progress{
  position:absolute;
  left:0;bottom:0;
  width:100%;height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--c-orange),var(--c-gold),var(--c-cyan));
  pointer-events:none;
}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 18px;
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:800;
  letter-spacing:.02em;
  line-height:1.2;
  text-decoration:none;
  border:1px solid transparent;
  border-radius:0;
  cursor:pointer;
  transition:background var(--dur-fast) linear,color var(--dur-fast) linear,border-color var(--dur-fast) linear,transform var(--dur-fast) var(--ease);
}
.btn--primary{background:var(--c-orange);color:#fff}
.btn--primary:hover{background:var(--c-orange-deep);transform:translateY(-2px)}
.btn--gold{background:var(--c-gold);color:var(--c-ink)}
.btn--gold:hover{background:#d9912b;transform:translateY(-2px)}
.btn--cyan{background:var(--c-cyan);color:var(--c-ink)}
.btn--cyan:hover{background:#0fa9b2;transform:translateY(-2px)}
.btn--ghost{background:transparent;border-color:rgba(198,208,214,.45);color:var(--c-canvas)}
.btn--ghost:hover{border-color:var(--c-cyan);color:var(--c-cyan);transform:translateY(-2px)}
.btn--block{width:100%}

/* ---------- 7. 标签 / 圆点 / 面板 / 索引 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 9px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
  line-height:1.5;
  border:1px solid var(--c-grid);
  background:var(--c-canvas);
  color:var(--c-slate);
}
.tag--cyan{border-color:var(--c-cyan);background:rgba(22,198,208,.12);color:#0b6d74}
.tag--gold{border-color:var(--c-gold);background:rgba(240,169,60,.16);color:#8a5c10}
.tag--cool{border-color:var(--c-cool);background:rgba(95,168,191,.16);color:#2f5c6b}
.tag--moss{border-color:var(--c-moss);background:rgba(78,122,90,.14);color:#2f4d38}

.dot{
  display:inline-block;
  flex:none;
  width:8px;height:8px;
  background:var(--c-moss);
}
.dot--gold{background:var(--c-gold)}
.dot--cool{background:var(--c-cool)}
.dot--orange{background:var(--c-orange)}

.panel{
  position:relative;
  background:var(--c-paper);
  border-top:2px solid var(--c-ink);
  padding:24px;
}
.panel--canvas{background:var(--c-canvas)}
.panel--slate{background:var(--c-slate);color:var(--c-canvas);border-top-color:var(--c-cyan)}
.panel--ink{background:var(--c-ink);color:var(--c-canvas);border-top-color:var(--c-orange)}
.panel__head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  margin-bottom:16px;
}
.panel__title{font-size:clamp(22px,2.6vw,28px)}
.panel__meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--c-clay);
}
.panel--slate .panel__meta,.panel--ink .panel__meta{color:var(--c-gold)}

.sec-head{
  display:flex;
  align-items:flex-end;
  flex-wrap:wrap;
  gap:12px 20px;
  padding-bottom:14px;
  margin-bottom:28px;
  border-bottom:1px solid var(--c-grid);
}
.sec-head__idx{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.24em;
  color:var(--c-clay);
}
.sec-head__title{font-size:clamp(28px,4vw,40px)}
.sec-head__note{
  margin-left:auto;
  font-size:13px;
  color:var(--c-slate);
  max-width:38ch;
}

.ledger{display:flex;flex-direction:column}
.ledger__row{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:16px;
  align-items:baseline;
  padding:14px 2px;
  border-bottom:1px solid var(--c-grid);
}
.ledger__row:first-child{border-top:1px solid var(--c-grid)}

.meter{position:relative;height:6px;background:var(--c-grid);overflow:hidden}
.meter__fill{position:absolute;top:0;bottom:0;left:0;background:var(--c-orange)}
.meter__fill--gold{background:var(--c-gold)}
.meter__fill--cool{background:var(--c-cool)}

/* 可展开内容组（原生 details） */
.accordion{border-top:1px solid var(--c-grid)}
.accordion__item{border-bottom:1px solid var(--c-grid)}
.accordion__q{
  display:flex;
  align-items:center;
  gap:12px;
  padding:16px 4px;
  font-size:16px;
  font-weight:700;
  cursor:pointer;
  list-style:none;
}
.accordion__q::-webkit-details-marker{display:none}
.accordion__q::after{
  content:"+";
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:18px;
  color:var(--c-orange);
}
.accordion__item[open] .accordion__q::after{content:"−";color:var(--c-cyan)}
.accordion__body{padding:0 4px 18px;font-size:15px;color:var(--c-slate)}

/* 面包屑 */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:18px 0;
  font-size:13px;
  color:var(--c-slate);
}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li + li::before{content:"/";color:var(--c-grid)}
.crumb a{text-decoration:none;border-bottom:1px solid transparent}
.crumb a:hover{border-bottom-color:var(--c-cyan)}
.crumb [aria-current="page"]{color:var(--c-orange);font-weight:700}

/* ---------- 8. 图片容器基础规则 ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  background:var(--c-slate);
}
.media img,
.media picture,
.media svg{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.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--slant{clip-path:polygon(0 0,100% 0,100% 86%,0 100%)}
.media--slant-rev{clip-path:polygon(0 6%,100% 0,100% 100%,0 100%)}
.media__cap{
  position:absolute;
  left:0;bottom:0;
  padding:9px 14px;
  background:rgba(12,26,43,.86);
  color:var(--c-canvas);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
}
.media--ph{
  background-color:var(--c-slate);
  background-image:
    linear-gradient(135deg,rgba(198,208,214,.20) 25%,transparent 25%,transparent 50%,rgba(198,208,214,.20) 50%,rgba(198,208,214,.20) 75%,transparent 75%);
  background-size:22px 22px;
}

/* ---------- 9. 页面级动效协议 ---------- */
html.js [data-reveal]{
  opacity:0;
  transform:translateY(24px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
  will-change:opacity,transform;
}
html.js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 10. 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--c-ink);
  color:rgba(247,242,230,.76);
  font-size:14px;
  border-top:3px solid var(--c-orange);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(90deg,rgba(198,208,214,.05) 1px,transparent 1px);
  background-size:32px 100%;
}
.footer-inner{
  position:relative;
  width:min(var(--wrap),100% - 48px);
  margin-inline:auto;
  padding:56px 0 36px;
  display:grid;
  grid-template-columns:1.6fr .8fr .8fr .8fr 1.5fr;
  gap:38px 28px;
}
.footer-brand{display:flex;flex-direction:column;gap:14px}
.brand--footer{color:var(--c-canvas)}
.brand--footer .brand__tag{color:rgba(247,242,230,.5)}
.footer-lead{
  font-size:14px;
  color:rgba(247,242,230,.7);
  max-width:32ch;
  border-left:2px solid var(--c-cyan);
  padding-left:12px;
}
.footer-meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(247,242,230,.46);
}
.footer-col{display:flex;flex-direction:column;gap:14px}
.footer-title{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.24em;
  color:var(--c-cyan);
}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{
  text-decoration:none;
  color:rgba(247,242,230,.78);
  border-bottom:1px solid transparent;
  transition:color var(--dur-fast) linear,border-color var(--dur-fast) linear;
}
.footer-list a:hover{color:#fff;border-bottom-color:var(--c-orange)}

.footer-contact{display:flex;flex-direction:column;gap:14px}
.footer-contact__list{display:flex;flex-direction:column;gap:10px}
.footer-contact__list > div{display:grid;grid-template-columns:64px minmax(0,1fr);gap:10px}
.footer-contact__list dt{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--c-clay);
  padding-top:3px;
}
.footer-contact__list dd{
  font-size:13.5px;
  color:rgba(247,242,230,.82);
  word-break:break-word;
}

.footer-base{
  position:relative;
  width:min(var(--wrap),100% - 48px);
  margin-inline:auto;
  padding:18px 0 28px;
  border-top:1px solid rgba(198,208,214,.18);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:8px 24px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(247,242,230,.5);
}
.footer-icp{color:rgba(247,242,230,.68)}
.footer-region{text-align:right}

/* ---------- 11. 响应式 ---------- */
@media (max-width:1180px){
  .footer-inner{grid-template-columns:1.4fr .9fr .9fr 1.2fr;}
  .footer-contact{grid-column:1 / -1;}
}

@media (max-width:1023px){
  :root{--rail-w:0px;--top-h:58px}

  body{background-size:64px 100%}

  .site-header{position:sticky;top:0}

  .header-rail{
    inset:var(--top-h) 0 auto 0;
    width:100%;
    max-height:calc(100vh - var(--top-h));
    padding:20px 18px 26px;
    border-right:0;
    border-bottom:1px solid rgba(198,208,214,.22);
  }
  .header-rail::after{height:64px}
  .site-header[data-nav-ready] .header-rail{
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    pointer-events:none;
    transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility 0s linear var(--dur);
  }
  .site-header[data-nav-ready][data-open] .header-rail{
    opacity:1;
    visibility:visible;
    transform:none;
    pointer-events:auto;
    transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
  }
  .site-nav__list a{padding:14px 10px;font-size:16px}

  .header-topbar{padding:0 14px;gap:10px}
  .brand--compact{display:flex}
  .brand--compact .brand__glyph{width:30px;height:30px;font-size:16px}
  .brand--compact .brand__name{font-size:15px}
  .topbar__lead{display:none}
  .status-strip{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}

  .footer-inner{grid-template-columns:repeat(2,minmax(0,1fr));padding:44px 0 30px}
  .footer-brand{grid-column:1 / -1}
  .footer-contact{grid-column:1 / -1}
  .footer-region{text-align:left}
}

@media (max-width:640px){
  .wrap{width:min(var(--wrap),100% - 32px)}
  .footer-inner{width:min(var(--wrap),100% - 32px);grid-template-columns:1fr;gap:30px}
  .footer-base{width:min(var(--wrap),100% - 32px);flex-direction:column}
  .section{padding:44px 0}
  .section--tight{padding:30px 0}
  .panel{padding:18px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .sec-head__note{margin-left:0}
}

@media (min-width:641px) and (max-width:900px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- 12. 无障碍与减弱动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  html.js [data-reveal]{opacity:1;transform:none}
  .scroll-progress{transition:none}
  .btn:hover{transform:none}
  .site-nav__list a:hover{transform:none}
}