/* =========================================================
   云开赛场 · 共享外壳样式 /assets/site.css
   夜场球场数据板：深墨绿底 + 荧光青轨道 + 等宽数字
   ========================================================= */

/* ---------- 01 变量 ---------- */
:root{
  --night-pitch:#05100D;
  --deep-panel:#0A1E19;
  --hairline:#16342C;
  --fluoro-cyan:#29F0C4;
  --mist-cyan:#8CFFE4;
  --signal-orange:#FF6A2B;
  --card-yellow:#FFD440;
  --card-red:#FF4757;
  --text-primary:#E8F6F1;
  --text-secondary:#7E9C94;
  --on-cyan:#05100D;

  --rail-w:88px;
  --topbar-h:56px;
  --gutter:clamp(16px,4vw,40px);
  --maxw:1180px;
  --r-sm:2px;
  --radius:3px;
  --dur:220ms;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* ---------- 02 reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;background:var(--night-pitch)}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video,canvas{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;border-spacing:0;width:100%}
th,td{text-align:left;font-weight:inherit}
hr{border:0;border-top:1px solid var(--hairline);margin:0}
[hidden]{display:none !important}

/* ---------- 03 中文排版与基础 ---------- */
body{
  min-height:100vh;
  color:var(--text-primary);
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-weight:900;letter-spacing:.005em;text-wrap:balance}
h1{font-size:clamp(30px,5vw,52px);line-height:1.08}
h2{font-size:clamp(23px,3.4vw,34px);line-height:1.16}
h3{font-size:clamp(17px,2.1vw,21px);line-height:1.32;font-weight:700}
p{text-wrap:pretty}
strong{font-weight:700;color:var(--mist-cyan)}

/* 夜间光晕 + 细网格 / 扫描线底纹 */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(760px 460px at 8% -8%, rgba(41,240,196,.16), transparent 70%),
    radial-gradient(620px 420px at 98% 2%, rgba(255,106,43,.11), transparent 72%),
    radial-gradient(980px 640px at 50% 112%, rgba(41,240,196,.08), transparent 74%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.55;
  background-image:
    repeating-linear-gradient(0deg, rgba(140,255,228,.045) 0 1px, transparent 1px 4px),
    repeating-linear-gradient(90deg, rgba(22,52,44,.5) 0 1px, transparent 1px 96px);
}
main{display:block;position:relative;z-index:1}

/* ---------- 04 通用工具 ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.container--tight{max-width:820px}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.rule{height:1px;background:var(--hairline)}
.digits{font-family:var(--font-mono);font-weight:600;letter-spacing:.02em;font-variant-numeric:tabular-nums}
.lede{max-width:62ch;font-size:clamp(16px,1.6vw,17.5px);line-height:1.8;color:var(--text-primary)}
.glow{position:absolute;border-radius:50%;filter:blur(60px);pointer-events:none;z-index:0}
.glow--cyan{background:radial-gradient(circle,rgba(41,240,196,.5),transparent 68%)}
.glow--orange{background:radial-gradient(circle,rgba(255,106,43,.42),transparent 68%)}

/* ---------- 05 按钮 / 链接 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;border:1px solid transparent;border-radius:var(--r-sm);
  font-size:14px;font-weight:700;letter-spacing:.04em;line-height:1.2;white-space:nowrap;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),
             transform var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--fluoro-cyan);color:var(--on-cyan)}
.btn--primary:hover{background:var(--mist-cyan);box-shadow:0 8px 26px -10px rgba(41,240,196,.8)}
.btn--ghost{background:transparent;color:var(--text-primary);border-color:var(--hairline)}
.btn--ghost:hover{border-color:var(--fluoro-cyan);color:var(--mist-cyan)}
.btn--sm{padding:7px 13px;font-size:13px}
.btn--block{width:100%}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:700;letter-spacing:.03em;color:var(--fluoro-cyan);
  border-bottom:1px solid rgba(41,240,196,.4);padding-bottom:1px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.link-more::after{content:"→";font-family:var(--font-mono)}
.link-more:hover{color:var(--mist-cyan);border-color:var(--mist-cyan)}

/* ---------- 06 头部：阅读进度 + 顶部状态条 ---------- */
.site-header{position:relative;z-index:60}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  padding:10px 16px;background:var(--fluoro-cyan);color:var(--on-cyan);
  font-weight:700;font-size:14px;border-radius:0 0 var(--r-sm) 0;
}
.skip-link:focus{left:0}

.read-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:120;
  background:rgba(22,52,44,.75);pointer-events:none;
}
.read-progress__bar{
  display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--fluoro-cyan),var(--mist-cyan));
  transition:transform 120ms linear;
}

.topbar{
  position:sticky;top:0;z-index:90;
  background:rgba(5,16,13,.88);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--hairline);
}
.topbar__inner{
  display:flex;align-items:center;gap:clamp(12px,2vw,28px);
  width:100%;max-width:1600px;margin-inline:auto;
  min-height:var(--topbar-h);padding-inline:var(--gutter);
}
.topbar__brand{
  display:flex;align-items:center;white-space:nowrap;
  font-size:15px;font-weight:700;letter-spacing:.02em;color:var(--text-primary);
}
.topbar__dot{margin:0 6px;color:var(--fluoro-cyan)}
.topbar__status{
  display:flex;align-items:center;gap:8px;min-width:0;
  font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.02em;
  color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.status-dot{
  flex:none;width:7px;height:7px;border-radius:50%;background:var(--signal-orange);
  box-shadow:0 0 0 4px rgba(255,106,43,.16);
}
.topbar__actions{display:flex;align-items:center;gap:10px;margin-left:auto}

.nav-toggle{
  display:inline-flex;align-items:center;gap:10px;margin-left:auto;
  padding:9px 12px;border:1px solid var(--hairline);border-radius:var(--r-sm);
  background:rgba(10,30,25,.9);color:var(--text-primary);
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--fluoro-cyan)}
.nav-toggle__box{display:grid;gap:4px;width:18px}
.nav-toggle__bar{
  display:block;height:2px;width:100%;border-radius:1px;background:var(--mist-cyan);
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.site-header[data-open] .nav-toggle__bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bar:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 07 侧边轨道导航（移动端为抽屉） ---------- */
.rail{
  position:fixed;top:0;left:0;z-index:80;
  width:min(84vw,320px);height:100%;
  display:grid;
  grid-template-columns:1fr;
  grid-template-rows:auto 1fr auto auto;
  grid-template-areas:"brand" "nav" "map" "foot";
  gap:12px;
  padding:70px 14px 18px;
  background:linear-gradient(180deg,#071612,#05100D 62%);
  border-right:1px solid var(--hairline);
  overflow-y:auto;overscroll-behavior:contain;
  transform:translateX(-102%);
  transition:transform 260ms var(--ease);
}
.site-header[data-open] .rail{transform:translateX(0)}

.rail__brand{
  grid-area:brand;display:flex;align-items:center;gap:12px;
  padding:2px 4px 12px;border-bottom:1px solid var(--hairline);
}
.rail__mark{
  flex:none;display:grid;place-items:center;width:34px;height:34px;border-radius:var(--r-sm);
  background:linear-gradient(150deg,var(--fluoro-cyan),#0F8F78);
  color:var(--on-cyan);font-size:18px;font-weight:900;line-height:1;
}
.rail__word{
  font-size:13px;font-weight:700;letter-spacing:.26em;color:var(--mist-cyan);
  writing-mode:vertical-rl;text-orientation:upright;
}

.rail__nav{
  grid-area:nav;display:flex;flex-direction:column;gap:12px;
  min-height:0;overflow-y:auto;scrollbar-width:none;
}
.rail__nav::-webkit-scrollbar{display:none}
.rail__list{display:flex;flex-direction:column;gap:2px}
.rail__link{
  display:flex;align-items:center;gap:10px;padding:10px 12px;
  border-left:2px solid transparent;border-radius:var(--r-sm);
  font-size:14px;font-weight:500;color:var(--text-secondary);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rail__link:hover{color:var(--mist-cyan);background:rgba(41,240,196,.05)}
.rail__link[aria-current="page"]{
  color:var(--fluoro-cyan);border-left-color:var(--fluoro-cyan);
  background:rgba(41,240,196,.08);
}
.rail__num{
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.04em;
  color:var(--text-secondary);opacity:.9;
}
.rail__link[aria-current="page"] .rail__num{color:var(--fluoro-cyan);opacity:1}
.rail__label{white-space:nowrap}
.rail__actions{display:flex;flex-direction:column;gap:8px;margin-top:auto;padding:14px 4px 4px}

.rail__map{
  grid-area:map;position:relative;
  display:flex;flex-direction:column;justify-content:center;align-items:flex-end;
  gap:10px;padding:4px 4px 4px 0;
}
.rail__map:empty{display:none}
.rail__map::before{
  content:"";position:absolute;top:0;bottom:0;right:5px;width:1px;background:var(--hairline);
}
.rail__tick{
  position:relative;display:block;width:14px;height:2px;border-radius:1px;
  background:var(--hairline);
  transition:width var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.rail__tick:hover{width:20px;background:var(--mist-cyan)}
.rail__tick[aria-current="true"]{
  width:24px;background:var(--fluoro-cyan);box-shadow:0 0 10px rgba(41,240,196,.55);
}

.rail__foot{
  grid-area:foot;display:flex;flex-direction:column;align-items:flex-start;gap:12px;
  padding:14px 4px 0;border-top:1px solid var(--hairline);
}
.rail__progress{
  position:relative;width:2px;height:40px;background:var(--hairline);overflow:hidden;
}
.rail__progress-bar{
  display:block;width:100%;height:100%;transform:scaleY(0);transform-origin:50% 0;
  background:linear-gradient(180deg,var(--fluoro-cyan),var(--mist-cyan));
  transition:transform 120ms linear;
}
.rail__percent{
  font-family:var(--font-mono);font-size:11.5px;font-weight:600;
  letter-spacing:.06em;color:var(--mist-cyan);
}
.rail__hint{
  font-size:11.5px;letter-spacing:.1em;line-height:1.7;color:var(--text-secondary);
}

.rail__scrim{
  position:fixed;inset:0;z-index:70;background:rgba(3,9,7,.72);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;
  transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.site-header[data-open] .rail__scrim{opacity:1;visibility:visible}
body.is-locked{overflow:hidden}

/* ---------- 08 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;
  margin-top:clamp(64px,10vw,120px);
  border-top:1px solid var(--hairline);
  background:linear-gradient(180deg,rgba(10,30,25,.6),rgba(5,16,13,.96) 70%);
}
.footer__inner{padding-block:clamp(40px,6vw,68px) 26px}
.footer__top{
  display:grid;grid-template-columns:1fr;gap:34px;
  padding-bottom:32px;border-bottom:1px solid var(--hairline);
}
.footer__brand{display:flex;flex-direction:column;gap:10px}
.footer__logo{
  display:flex;align-items:center;gap:10px;
  font-size:22px;font-weight:900;letter-spacing:.04em;color:var(--text-primary);
}
.footer__logo-mark{
  display:grid;place-items:center;width:30px;height:30px;border-radius:var(--r-sm);
  background:linear-gradient(150deg,var(--fluoro-cyan),#0F8F78);
  color:var(--on-cyan);font-size:16px;font-weight:900;line-height:1;
}
.footer__tagline{font-size:13px;letter-spacing:.08em;color:var(--text-secondary)}
.footer__contact{
  margin-top:6px;font-family:var(--font-mono);font-size:12.5px;font-weight:600;
  letter-spacing:.02em;line-height:2;color:var(--text-secondary);word-break:break-word;
}
.footer__cols{display:grid;gap:28px 24px;grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.footer__col{min-width:0}
.footer__col-title{
  display:flex;align-items:baseline;gap:8px;
  padding-bottom:8px;margin-bottom:12px;border-bottom:1px solid var(--hairline);
  font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--mist-cyan);
}
.footer__num{font-family:var(--font-mono);font-size:11px;font-weight:600;color:var(--fluoro-cyan)}
.footer__list{display:flex;flex-direction:column;gap:8px}
.footer__list a{
  font-size:14px;color:var(--text-secondary);
  transition:color var(--dur) var(--ease),padding var(--dur) var(--ease);
}
.footer__list a:hover{color:var(--fluoro-cyan);padding-left:4px}
.footer__text{font-size:14px;line-height:1.8;color:var(--text-secondary)}
.footer__bottom{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;padding-top:20px;
}
.footer__footnote{flex:1 1 320px;font-size:12.5px;line-height:1.75;color:var(--text-secondary)}
.footer__icp{
  font-family:var(--font-mono);font-size:12px;font-weight:600;
  letter-spacing:.03em;color:var(--text-secondary);
}

/* ---------- 09 通用页面组件 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  padding-top:16px;font-family:var(--font-mono);font-size:11.5px;
  font-weight:600;letter-spacing:.06em;color:var(--text-secondary);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:6px}
.breadcrumb a{transition:color var(--dur) var(--ease)}
.breadcrumb a:hover{color:var(--fluoro-cyan)}
.breadcrumb__sep{color:var(--hairline)}
.breadcrumb [aria-current="page"]{color:var(--mist-cyan)}

.section{position:relative;margin-top:clamp(48px,7vw,88px)}
.section:first-of-type{margin-top:clamp(24px,4vw,40px)}

.route-head{
  position:relative;display:flex;flex-wrap:wrap;align-items:flex-end;gap:10px 20px;
  padding:18px 0 16px;margin-bottom:26px;
  border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline);
}
.route-head::before{
  content:"";position:absolute;top:-1px;left:0;width:76px;height:2px;
  background:linear-gradient(90deg,var(--fluoro-cyan),transparent);
}
.route-head__num{
  font-family:var(--font-mono);font-size:12px;font-weight:600;
  letter-spacing:.12em;color:var(--fluoro-cyan);
}
.route-head__title{flex:1 1 auto;font-size:clamp(21px,3vw,29px);font-weight:900;line-height:1.16}
.route-head__meta{
  font-family:var(--font-mono);font-size:11.5px;font-weight:600;
  letter-spacing:.05em;color:var(--text-secondary);
}

.duo{display:grid;grid-template-columns:1fr;gap:26px}
.panel{
  padding:18px 18px 20px;border:1px solid var(--hairline);border-radius:var(--r-sm);
  background:linear-gradient(180deg,rgba(10,30,25,.86),rgba(5,16,13,.6));
}
.panel__head{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px 16px;
  padding-bottom:12px;margin-bottom:14px;border-bottom:1px solid var(--hairline);
}
.panel__title{font-size:15px;font-weight:700;letter-spacing:.06em;color:var(--text-primary)}
.panel__note{font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;color:var(--text-secondary)}
.panel__body{font-size:14.5px;color:var(--text-secondary)}

.table-wrap{
  width:100%;overflow-x:auto;border:1px solid var(--hairline);
  border-radius:var(--r-sm);background:rgba(10,30,25,.6);
}
.data-table{min-width:560px;font-size:14px}
.data-table thead th{
  position:sticky;top:0;z-index:1;white-space:nowrap;
  padding:10px 14px;background:#0B221C;border-bottom:1px solid var(--hairline);
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.1em;color:var(--text-secondary);
}
.data-table td{
  padding:11px 14px;border-bottom:1px solid rgba(22,52,44,.72);
  color:var(--text-primary);vertical-align:middle;
}
.data-table tbody tr{transition:background var(--dur) var(--ease)}
.data-table tbody tr:hover{background:rgba(41,240,196,.055)}
.data-table tbody tr:last-child td{border-bottom:0}

.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:1px 7px;border:1px solid currentColor;border-radius:var(--r-sm);
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.04em;line-height:1.7;
}
.badge--cyan{color:var(--fluoro-cyan);background:rgba(41,240,196,.1)}
.badge--orange{color:var(--signal-orange);background:rgba(255,106,43,.12)}
.badge--yellow{color:var(--card-yellow);background:rgba(255,212,64,.12)}
.badge--red{color:var(--card-red);background:rgba(255,71,87,.12)}

.timeline{position:relative;display:flex;flex-direction:column;padding-left:20px}
.timeline::before{
  content:"";position:absolute;left:4px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,var(--fluoro-cyan),var(--hairline) 42%,var(--hairline));
}
.timeline__item{position:relative;padding:12px 0}
.timeline__item::before{
  content:"";position:absolute;left:-20px;top:20px;width:9px;height:9px;border-radius:50%;
  background:var(--night-pitch);border:1px solid var(--fluoro-cyan);
}
.timeline__item--live::before{
  background:var(--signal-orange);border-color:var(--signal-orange);
  box-shadow:0 0 0 4px rgba(255,106,43,.14);
}
.timeline__time{
  font-family:var(--font-mono);font-size:12px;font-weight:600;
  letter-spacing:.04em;color:var(--mist-cyan);
}
.timeline__title{margin-top:2px;font-size:15px;font-weight:700;color:var(--text-primary)}
.timeline__meta{margin-top:2px;font-size:13px;color:var(--text-secondary)}

.stat-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:1px;background:var(--hairline);border:1px solid var(--hairline);border-radius:var(--r-sm);
  overflow:hidden;
}
.stat{padding:16px;background:var(--night-pitch)}
.stat__value{
  font-family:var(--font-mono);font-size:26px;font-weight:600;
  line-height:1.1;color:var(--mist-cyan);
}
.stat__label{margin-top:6px;font-size:12px;letter-spacing:.08em;color:var(--text-secondary)}

.chip-list{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border:1px solid var(--hairline);border-radius:999px;
  font-size:12.5px;color:var(--text-secondary);background:rgba(10,30,25,.6);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.chip:hover{color:var(--mist-cyan);border-color:var(--fluoro-cyan)}
.chip--on{color:var(--fluoro-cyan);border-color:var(--fluoro-cyan);background:rgba(41,240,196,.09)}

.tabs{display:flex;gap:4px;overflow-x:auto;border-bottom:1px solid var(--hairline)}
.tab{
  padding:10px 14px;border-bottom:2px solid transparent;white-space:nowrap;
  font-size:14px;font-weight:700;color:var(--text-secondary);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.tab:hover{color:var(--mist-cyan)}
.tab[aria-selected="true"]{color:var(--fluoro-cyan);border-bottom-color:var(--fluoro-cyan)}
.tabpanel{padding-top:20px}

.accordion{border-top:1px solid var(--hairline)}
.accordion__item{border-bottom:1px solid var(--hairline)}
.accordion__trigger{
  display:flex;align-items:center;gap:14px;width:100%;
  padding:16px 2px;text-align:left;
  font-size:16px;font-weight:700;color:var(--text-primary);
  transition:color var(--dur) var(--ease);
}
.accordion__trigger:hover{color:var(--mist-cyan)}
.accordion__icon{position:relative;flex:none;width:14px;height:14px;margin-left:auto}
.accordion__icon::before,.accordion__icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--fluoro-cyan);
  transform:translate(-50%,-50%);
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.accordion__icon::before{width:14px;height:1px}
.accordion__icon::after{width:1px;height:14px}
.accordion__trigger[aria-expanded="true"] .accordion__icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.accordion__panel{padding:0 2px 18px;font-size:15px;color:var(--text-secondary)}

.media{
  position:relative;display:block;width:100%;overflow:hidden;
  aspect-ratio:16/9;border:1px solid var(--hairline);border-radius:var(--r-sm);
  background:
    linear-gradient(140deg, rgba(41,240,196,.1), rgba(255,106,43,.08) 58%, transparent),
    repeating-linear-gradient(135deg, rgba(140,255,228,.05) 0 2px, transparent 2px 8px),
    var(--deep-panel);
}
.media--wide{aspect-ratio:21/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:4/5}
.media__img{width:100%;height:100%;object-fit:cover}
.media__overlay{
  position:absolute;inset:auto 0 0 0;padding:16px;
  background:linear-gradient(180deg,transparent,rgba(5,16,13,.92));
}
.media__caption{
  position:absolute;left:14px;bottom:12px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.06em;color:var(--mist-cyan);
}

.reveal{opacity:0;transform:translateY(8px);transition:opacity 480ms var(--ease),transform 480ms var(--ease);transition-delay:var(--reveal-delay,0ms)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 10 焦点可见 ---------- */
:focus-visible{outline:2px solid var(--fluoro-cyan);outline-offset:2px;border-radius:2px}
a:focus-visible,button:focus-visible{outline:2px solid var(--fluoro-cyan);outline-offset:3px}

/* ---------- 11 断点：≥1024px 桌面轨道 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  .read-progress{left:var(--rail-w)}

  .nav-toggle{display:none}
  .topbar__actions{margin-left:auto}

  .rail{
    width:var(--rail-w);height:100vh;
    grid-template-columns:1fr 16px;
    grid-template-rows:auto 1fr auto;
    grid-template-areas:"brand brand" "nav map" "foot foot";
    gap:16px 0;padding:20px 0 22px;
    background:linear-gradient(180deg,rgba(10,30,25,.94),rgba(5,16,13,.97));
    box-shadow:24px 0 60px -40px rgba(41,240,196,.5);
    transform:none;
  }
  .rail__brand{flex-direction:column;gap:10px;padding:0 0 14px;border-bottom:0}
  .rail__word{font-size:12.5px;letter-spacing:.24em}
  .rail__nav{padding:0 6px;overflow:visible}
  .rail__list{gap:0}
  .rail__link{
    flex-direction:column;align-items:center;gap:1px;
    padding:9px 2px;border-left:0;border-right:2px solid transparent;border-radius:0;
  }
  .rail__link:hover{background:rgba(41,240,196,.05)}
  .rail__link[aria-current="page"]{
    border-left:0;border-right-color:var(--fluoro-cyan);background:rgba(41,240,196,.07);
  }
  .rail__num{font-size:10px}
  .rail__label{font-size:11px;letter-spacing:.02em}
  .rail__actions{display:none}

  .rail__map{padding:0 0 0 4px}
  .rail__foot{
    align-items:center;gap:10px;padding:16px 0 0;
  }
  .rail__progress{height:72px}
  .rail__hint{
    writing-mode:vertical-rl;text-orientation:upright;
    font-size:10.5px;letter-spacing:.22em;color:var(--text-secondary);
    display:none;
  }
  .rail__scrim{display:none}

  .duo{grid-template-columns:1fr 1fr;gap:0}
  .duo--7-5{grid-template-columns:7fr 5fr}
  .duo--5-7{grid-template-columns:5fr 7fr}
  .duo__col{padding:0 26px;min-width:0}
  .duo__col:first-child{padding-left:0}
  .duo__col:last-child{padding-right:0;border-left:1px solid var(--hairline)}

  .footer__top{grid-template-columns:minmax(230px,1fr) 2.2fr;gap:48px;align-items:start}
}

@media (min-width:1024px) and (min-height:880px){
  .rail__hint{display:block}
}

/* ---------- 12 断点：平板/手机细节 ---------- */
@media (max-width:1023px){
  .topbar__actions .btn--ghost{display:none}
  .rail__word{writing-mode:horizontal-tb;text-orientation:mixed;font-size:14px;letter-spacing:.2em}
  .rail__map{
    flex-direction:row;flex-wrap:wrap;justify-content:flex-start;align-items:center;
    gap:8px;padding:12px 4px 0;border-top:1px solid var(--hairline);
  }
  .rail__map::before{display:none}
  .rail__tick{width:18px;height:2px}
  .rail__tick[aria-current="true"]{width:30px}
  .rail__foot{flex-direction:row;align-items:center;gap:12px}
  .rail__progress{height:36px;flex:none}
  .rail__hint{flex:1 1 auto;font-size:11.5px;letter-spacing:.08em}
}
@media (max-width:719px){
  .topbar__actions{display:none}
  .topbar__status{display:none}
  .topbar__brand{font-size:14px}
  .footer__logo{font-size:19px}
  .footer__list a{font-size:13.5px}
}
@media (min-width:720px) and (max-width:1023px){
  .topbar__status{font-size:11.5px}
}

/* ---------- 13 减少动态 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .btn:hover{transform:none}
  .reveal{opacity:1;transform:none}
  .read-progress__bar,.rail__progress-bar{transition:none}
}
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
  .status-dot{animation:pulse 2.4s var(--ease) infinite}
  @keyframes pulse{
    0%,100%{box-shadow:0 0 0 3px rgba(255,106,43,.16)}
    50%{box-shadow:0 0 0 8px rgba(255,106,43,.04)}
  }
}