/* ============================================================
   米乐赛场 / assets/site.css
   共享层：reset、变量、中文排版、头部轨道、页脚、按钮、网格、基础组件
   ============================================================ */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;background:#0A1F1A}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
[hidden]{display:none!important}

/* ---------- 2. 设计令牌 ---------- */
:root{
  --ink:#0A1F1A;
  --charcoal:#0E1013;
  --layer:#14312A;
  --cyan:#34E5C8;
  --mist:#7FF3E0;
  --amber:#F0B429;
  --gold:#FFD166;
  --paper:#E8F1EE;
  --muted:#8FA9A2;
  --line:#1F4A42;
  --deep:#06231D;

  --rail-w:88px;
  --topbar-h:62px;
  --maxw:1180px;
  --maxw-wide:1360px;
  --maxw-narrow:760px;
  --gap:clamp(16px,2.4vw,32px);
  --sect-y:clamp(64px,9vw,132px);
  --pad-x:clamp(18px,4vw,48px);

  --shadow-hard:8px 8px 0 var(--line);
  --shadow-soft:4px 4px 0 var(--line);
  --radius:2px;

  --font-sans:"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.68,.28,1);
}

/* ---------- 3. 基础排版（中文优先） ---------- */
body{
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--paper);
  background:var(--ink);
  min-height:100vh;
  padding-left:var(--rail-w);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-weight:800;line-height:1.12;letter-spacing:-0.02em;color:var(--paper)}
strong,b{font-weight:800;color:var(--paper)}
::selection{background:var(--amber);color:var(--deep)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
:focus:not(:focus-visible){outline:none}

.display{font-size:clamp(3rem,9vw,8rem);font-weight:900;line-height:.92;letter-spacing:-0.04em}
.display--skew{transform:skewX(-3deg);transform-origin:left bottom}
.h1{font-size:clamp(2.4rem,6vw,4.5rem);font-weight:900;line-height:1;letter-spacing:-0.03em}
.h2{font-size:clamp(1.75rem,4vw,3rem);font-weight:800;letter-spacing:-0.025em}
.h3{font-size:clamp(1.25rem,2.2vw,1.6rem);font-weight:800;letter-spacing:-0.015em}
.lede{font-size:clamp(1.05rem,1.6vw,1.3rem);line-height:1.7;color:var(--mist);max-width:32em}
.muted{color:var(--muted)}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;letter-spacing:-0.01em}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}
.prose{display:grid;gap:1em}
.prose p{max-width:34em;color:var(--paper)}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.prose ul{display:grid;gap:.6em;max-width:34em}
.prose li{padding-left:1.1em;position:relative}
.prose li::before{content:"";position:absolute;left:0;top:.75em;width:8px;height:2px;background:var(--cyan)}

/* ---------- 4. 布局容器 ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--pad-x)}
.container--wide{max-width:var(--maxw-wide)}
.container--narrow{max-width:var(--maxw-narrow)}
.section{position:relative;padding-block:var(--sect-y)}
.section--tint{background:var(--charcoal);border-top:2px solid var(--line);border-bottom:2px solid var(--line)}
.section--layer{background:var(--layer)}
.section__head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:clamp(24px,4vw,48px)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.grid-12>*{min-width:0}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-9{grid-column:span 9}
.col-12{grid-column:span 12}
.page-head{position:relative;padding-block:clamp(48px,7vw,104px) clamp(28px,4vw,56px);border-bottom:2px solid var(--line);overflow:hidden}
.page-head__title{margin-bottom:18px}
.page-head__lede{margin-top:6px}
.skew-band{position:absolute;left:-8%;right:-8%;height:150px;top:10%;background:linear-gradient(100deg,rgba(52,229,200,.10),rgba(240,180,41,.06) 58%,transparent);transform:skewY(-3deg);pointer-events:none;z-index:0}

/* ---------- 5. 展签 / 面包屑 ---------- */
.exhibit-label{display:inline-flex;align-items:center;gap:10px;padding-top:8px;border-top:1px solid var(--line);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.exhibit-label__num{font-family:var(--font-mono);font-size:12px;color:var(--cyan)}
.exhibit-label__dash{display:inline-block;width:28px;height:2px;background:var(--cyan)}
.exhibit-label__name{font-weight:700;color:var(--mist);letter-spacing:.16em}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding-block:18px;font-size:13px;color:var(--muted)}
.crumbs a:hover{color:var(--cyan)}
.crumbs [aria-current="page"]{color:var(--paper)}
.crumbs__sep{color:var(--line)}

/* ---------- 6. 按钮 ---------- */
.btn{
  --btn-bg:transparent;--btn-fg:var(--paper);--btn-bd:var(--line);
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:44px;padding:12px 22px;border-radius:var(--radius);
  border:2px solid var(--btn-bd);background:var(--btn-bg);color:var(--btn-fg);
  font-size:15px;font-weight:700;letter-spacing:.04em;text-align:center;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:var(--shadow-soft)}
.btn:active{transform:none;box-shadow:none}
.btn--primary{--btn-bg:linear-gradient(135deg,var(--cyan),var(--mist) 55%,var(--gold));--btn-fg:var(--deep);--btn-bd:var(--cyan)}
.btn--amber{--btn-bg:linear-gradient(135deg,var(--gold),var(--amber));--btn-fg:#231A02;--btn-bd:var(--amber)}
.btn--ghost{--btn-bg:transparent;--btn-fg:var(--mist);--btn-bd:var(--line)}
.btn--ghost:hover{--btn-bg:var(--cyan);--btn-fg:var(--deep);--btn-bd:var(--cyan)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 7. 面板 / 数据组件 ---------- */
.panel{position:relative;background:var(--layer);border:2px solid var(--line);border-radius:var(--radius);padding:clamp(18px,2.4vw,30px)}
.panel--hard{box-shadow:var(--shadow-hard)}
.panel--tint{background:var(--charcoal)}
.panel__title{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-size:1.05rem;font-weight:800;letter-spacing:.02em}
.panel__title::before{content:"";flex:none;width:10px;height:10px;background:var(--cyan)}

.data-list{display:grid;gap:14px}
.data-row{display:grid;grid-template-columns:minmax(84px,1fr) 2.2fr auto;align-items:center;gap:14px;padding:10px 0;border-bottom:1px dashed var(--line)}
.data-row__label{font-size:14px;letter-spacing:.04em;color:var(--muted)}
.data-row__value{min-width:3.4em;text-align:right;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:1.15rem;color:var(--gold)}
.data-bar{position:relative;height:10px;background:rgba(232,241,238,.08);border:1px solid var(--line);overflow:hidden}
.data-bar__fill{position:absolute;top:0;bottom:0;left:0;width:0;background:linear-gradient(90deg,var(--cyan),var(--mist));transition:width .9s var(--ease)}
.data-bar--amber .data-bar__fill{background:linear-gradient(90deg,var(--amber),var(--gold))}

.metric{display:flex;flex-direction:column;gap:6px}
.metric__value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(2rem,5vw,3.4rem);font-weight:700;line-height:1;letter-spacing:-0.02em;color:var(--gold)}
.metric__label{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.metric--cyan .metric__value{color:var(--cyan)}

.badge-array{display:flex;flex-wrap:wrap;gap:10px}
.badge{display:grid;place-items:center;width:52px;height:52px;font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--mist);background:linear-gradient(140deg,var(--layer),var(--charcoal));border:2px solid var(--line);clip-path:polygon(12% 0,100% 0,88% 100%,0 100%)}
.badge--active{border-color:var(--cyan);color:var(--deep);background:linear-gradient(140deg,var(--cyan),var(--mist))}

.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{min-height:44px;padding:8px 18px;border:2px solid var(--line);border-radius:var(--radius);font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--muted);background:transparent;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease)}
.chip:hover{color:var(--paper);border-color:var(--cyan)}
.chip.is-active,.chip[aria-pressed="true"]{color:var(--deep);background:linear-gradient(135deg,var(--cyan),var(--mist));border-color:var(--cyan)}
.is-hidden{display:none!important}

.timeline{position:relative;display:grid;gap:26px;padding-left:26px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--cyan),var(--line))}
.timeline__item{position:relative}
.timeline__item::before{content:"";position:absolute;left:-26px;top:9px;width:12px;height:12px;background:var(--ink);border:2px solid var(--cyan);transform:rotate(45deg)}
.timeline__time{display:block;font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;color:var(--amber)}

/* ---------- 8. 图片容器（页面阶段放占位） ---------- */
.media-frame{position:relative;overflow:hidden;border:2px solid var(--line);background:linear-gradient(150deg,var(--layer),var(--charcoal) 72%);box-shadow:var(--shadow-hard)}
.media-frame__img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover}
.media-frame--wide .media-frame__img{aspect-ratio:21/9}
.media-frame--square .media-frame__img{aspect-ratio:1/1}
.media-frame__ph{display:grid;place-items:center;aspect-ratio:16/10;font-size:12px;letter-spacing:.18em;color:var(--muted);background:repeating-linear-gradient(135deg,transparent 0 14px,rgba(52,229,200,.055) 14px 28px)}
.media-frame__cap{position:absolute;left:0;bottom:0;padding:8px 14px;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--mist);background:var(--charcoal);border-top:2px solid var(--line);border-right:2px solid var(--line)}

/* ---------- 9. 滚动显现 ---------- */
html.reveal-ready [data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .34s var(--ease),transform .34s var(--ease)}
html.reveal-ready [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 10. 头部：侧边轨道 ---------- */
.skip-link{position:fixed;top:10px;left:calc(var(--rail-w) + 10px);z-index:120;padding:10px 16px;font-size:14px;font-weight:700;color:var(--deep);background:var(--cyan);border:2px solid var(--ink);transform:translateY(-180%);transition:transform .2s var(--ease)}
.skip-link:focus{transform:none}

.site-header{position:fixed;top:0;bottom:0;left:0;width:var(--rail-w);z-index:80;background:var(--charcoal);border-right:2px solid var(--line)}
.rail{position:relative;display:flex;flex-direction:column;align-items:center;gap:14px;height:100%;padding:18px 0 14px}

.brand{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center}
.brand__mark{display:grid;place-items:center;width:44px;height:44px;font-family:var(--font-mono);font-size:15px;font-weight:700;color:var(--deep);background:linear-gradient(135deg,var(--cyan),var(--mist));border:2px solid var(--cyan)}
.brand__name{writing-mode:vertical-rl;font-size:14px;font-weight:800;letter-spacing:.3em;color:var(--paper)}

.nav-toggle{display:none}

.rail-nav{width:100%;flex:1 1 auto;min-height:0;overflow-y:auto;overflow-x:hidden;padding:6px 0}
.rail-nav__list{display:flex;flex-direction:column;align-items:center;gap:4px}
.rail-nav__item{width:100%}
.rail-nav__link{display:flex;flex-direction:column;align-items:center;gap:8px;min-height:44px;padding:14px 4px;font-size:13px;letter-spacing:.2em;color:var(--muted);border-left:3px solid transparent;transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease)}
.rail-nav__link:hover{color:var(--paper);background:rgba(52,229,200,.07)}
.rail-nav__link[aria-current="page"]{color:var(--deep);background:linear-gradient(160deg,var(--cyan),var(--mist));border-left-color:var(--amber)}
.rail-nav__idx{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:var(--cyan)}
.rail-nav__link[aria-current="page"] .rail-nav__idx{color:var(--deep)}
.rail-nav__label{writing-mode:vertical-rl;font-weight:700}

.rail__meta{writing-mode:vertical-rl;font-size:10px;letter-spacing:.24em;color:var(--muted);padding-bottom:10px;text-align:center}
.rail__progress{position:absolute;top:0;right:0;width:3px;height:100%;background:rgba(52,229,200,.12)}
.rail__progress-fill{display:block;width:100%;height:100%;background:linear-gradient(180deg,var(--cyan),var(--gold));transform:scaleY(var(--p,0));transform-origin:top}

/* ---------- 11. 页脚 ---------- */
.site-footer{position:relative;overflow:hidden;background:var(--charcoal);border-top:2px solid var(--line)}
.site-footer::before{content:"";position:absolute;top:-70px;right:-10%;width:60%;height:220px;background:linear-gradient(100deg,rgba(52,229,200,.10),rgba(240,180,41,.05) 55%,transparent);transform:skewY(-3deg);pointer-events:none}
.footer-inner{position:relative;display:grid;grid-template-columns:1.1fr 2fr;gap:clamp(28px,4vw,60px);width:100%;max-width:var(--maxw);margin-inline:auto;padding:clamp(44px,6vw,80px) var(--pad-x) clamp(28px,4vw,48px)}
.footer-brand__mark{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:900;letter-spacing:-0.02em;color:var(--paper)}
.footer-brand__tag{margin-top:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan)}
.footer-brand__note{margin-top:16px;max-width:34em;font-size:15px;line-height:1.7;color:var(--muted)}
.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px)}
.footer-col__title{margin-bottom:14px;padding-top:10px;border-top:1px solid var(--line);font-size:11px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--mist)}
.footer-list{display:grid;gap:10px}
.footer-link{font-size:15px;color:var(--muted);transition:color .18s var(--ease)}
.footer-link:hover{color:var(--cyan)}
.footer-link[aria-current="page"]{color:var(--paper)}
.footer-contact{display:grid;gap:10px}
.footer-contact__item{font-size:15px;line-height:1.7;color:var(--muted)}
.footer-contact__item .num{font-size:13px;color:var(--mist);word-break:break-all}
.footer-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:16px var(--pad-x);background:var(--ink);border-top:2px solid var(--line);font-size:13px;color:var(--muted)}
.footer-bar__copy{margin:0}
.footer-bar__meta{display:flex;flex-wrap:wrap;gap:16px;margin:0;font-family:var(--font-mono);letter-spacing:.06em}

/* ---------- 12. 响应式 ---------- */
@media (max-width:1080px){
  .col-3,.col-4{grid-column:span 6}
  .col-5,.col-7,.col-8,.col-9{grid-column:span 12}
}
@media (max-width:900px){
  body{padding-left:0;padding-top:var(--topbar-h)}
  .skip-link{left:10px}
  .site-header{top:0;bottom:auto;right:0;width:100%;height:var(--topbar-h);border-right:0;border-bottom:2px solid var(--line)}
  .rail{flex-direction:row;align-items:center;justify-content:space-between;gap:12px;height:100%;padding:0 16px}
  .brand{flex-direction:row;gap:10px}
  .brand__mark{width:36px;height:36px;font-size:13px}
  .brand__name{writing-mode:horizontal-tb;font-size:13px;letter-spacing:.22em}
  .rail__meta{display:none}
  .nav-toggle{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 14px;border:2px solid var(--line);border-radius:var(--radius);font-size:14px;font-weight:700;letter-spacing:.12em;color:var(--paper);transition:color .18s var(--ease),border-color .18s var(--ease)}
  .nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
  .nav-toggle__bars{position:relative;display:block;width:18px;height:2px;background:currentColor}
  .nav-toggle__bars::before,.nav-toggle__bars::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;transition:transform .2s var(--ease)}
  .nav-toggle__bars::before{top:-6px}
  .nav-toggle__bars::after{top:6px}
  .site-header[data-open="true"] .nav-toggle{border-color:var(--cyan);color:var(--cyan)}
  .site-header[data-open="true"] .nav-toggle__bars{background:transparent}
  .site-header[data-open="true"] .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg)}
  .site-header[data-open="true"] .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg)}
  .site-header[data-open="true"]::after{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(10,31,26,.74);z-index:-1}

  .rail-nav{position:fixed;top:var(--topbar-h);bottom:0;left:0;width:min(340px,86vw);flex:none;padding:18px 0 40px;background:var(--charcoal);border-right:2px solid var(--line);overflow-y:auto;transform:translateX(-104%);visibility:hidden;transition:transform .28s var(--ease),visibility .28s var(--ease)}
  .site-header[data-open="true"] .rail-nav{transform:translateX(0);visibility:visible}
  .rail-nav__list{gap:0;align-items:stretch}
  .rail-nav__item{width:100%}
  .rail-nav__link{flex-direction:row;justify-content:flex-start;gap:14px;padding:16px 22px;font-size:17px;letter-spacing:.06em;border-left:0;border-top:1px solid var(--line)}
  .rail-nav__label{writing-mode:horizontal-tb;letter-spacing:.06em}
  .rail-nav__idx{font-size:11px}
  .rail-nav__link[aria-current="page"]{background:linear-gradient(100deg,var(--cyan),var(--mist) 70%,transparent);border-left:0}

  .rail__progress{top:auto;right:0;bottom:0;left:0;width:100%;height:3px}
  .rail__progress-fill{transform:scaleX(var(--p,0));transform-origin:left;background:linear-gradient(90deg,var(--cyan),var(--gold))}

  .footer-inner{grid-template-columns:1fr}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:720px){
  body{font-size:16px}
  .col-3,.col-4,.col-5,.col-6{grid-column:span 12}
  .data-row{grid-template-columns:1fr auto;row-gap:8px}
  .data-row__label{grid-column:1 / -1}
  .footer-nav{grid-template-columns:1fr}
  .footer-bar{flex-direction:column;align-items:flex-start}
}
@media (max-width:420px){
  .display{font-size:clamp(2.4rem,13vw,3rem)}
}

/* ---------- 13. 动效降级 ---------- */
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}
  html.reveal-ready [data-reveal]{opacity:1;transform:none}
  .btn:hover{transform:none;box-shadow:none}
}