/* ============================================================
   DOU赛场 / dousports-ledong.com.cn
   共享样式：reset · 变量 · 中文排版 · 侧边轨道 header · footer
   通用按钮 / 面包屑 / 正文容器 / 栅格 / 基础组件
   ============================================================ */

/* ── 1. Reset ───────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,dl,dt,dd,figure,blockquote{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
img,svg,video,picture{max-width:100%}
img{display:block;height:auto}
button{font:inherit;color:inherit;background:none;border:0;padding:0}
table{border-collapse:collapse;border-spacing:0}
[hidden]{display:none!important}

/* ── 2. Tokens ──────────────────────────────────────────── */
:root{
  --night:#061C18;
  --pitch:#0E2A24;
  --cyan:#17E6C3;
  --orange:#FF6A13;
  --wine:#7C1F3E;
  --indigo:#3A2A6E;
  --white:#EDF6F2;
  --mist:#9BB6AF;
  --gold:#C7A227;
  --stroke:#2C5A50;
  --stroke-soft:rgba(44,90,80,.55);
  --glass:rgba(14,42,36,.55);

  --rail-w:264px;
  --topbar-h:62px;
  --pad-x:clamp(20px,4vw,48px);
  --maxw:1200px;

  --font-display:"Songti SC","Source Han Serif SC","Noto Serif SC",Georgia,"Times New Roman",serif;
  --font-body:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --fs-body:17px;
  --fs-1:clamp(34px,6.2vw,56px);
  --fs-2:clamp(26px,3.4vw,40px);
  --fs-3:clamp(20px,2.2vw,28px);

  --dur:160ms;
  --ease:cubic-bezier(.32,.72,.28,1);
}

/* ── 3. Base / 中文排版 ─────────────────────────────────── */
body{
  min-height:100vh;
  font-family:var(--font-body);
  font-size:var(--fs-body);
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--white);
  background-color:var(--night);
  background-image:
    linear-gradient(to right,rgba(44,90,80,.20) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(44,90,80,.15) 1px,transparent 1px);
  background-size:96px 96px;
  padding-left:var(--rail-w);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5{font-weight:600;line-height:1.24;letter-spacing:.02em}
p,li,dd{text-wrap:pretty}
strong,b{font-weight:600;color:var(--white)}
a{color:var(--cyan);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--white)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px}
::selection{background:rgba(23,230,195,.28);color:var(--white)}

.skip-link{
  position:fixed;top:14px;left:14px;z-index:400;
  padding:10px 16px;background:var(--cyan);color:#04140F;
  font-size:13px;font-weight:600;letter-spacing:.08em;border-radius:2px;
  transform:translateY(-190%);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus{transform:none;color:#04140F}

/* ── 4. 工具类 / 文字层 ─────────────────────────────────── */
.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}
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--pad-x)}
.section{padding-block:clamp(48px,7vw,96px)}
.section--tight{padding-block:clamp(28px,4vw,52px)}

.grid{display:grid;gap:clamp(18px,2.4vw,32px)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.grid--split{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}

.t-display{font-family:var(--font-display);font-size:var(--fs-1);line-height:1.05;letter-spacing:.06em;text-transform:uppercase;font-weight:600}
.t-h2{font-family:var(--font-display);font-size:var(--fs-2);line-height:1.14;letter-spacing:.05em;text-transform:uppercase;font-weight:600}
.t-h3{font-family:var(--font-display);font-size:var(--fs-3);line-height:1.22;letter-spacing:.04em;font-weight:600}
.t-lead{font-size:clamp(16px,1.5vw,19px);line-height:1.8}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;letter-spacing:.01em}
.unit{font-family:var(--font-body);font-size:.7em;color:var(--mist);margin-left:.4em;letter-spacing:.08em}
.coord{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--mist)}
.eyebrow{font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--cyan)}
.muted{color:var(--mist)}
.note{font-size:13px;line-height:1.7;color:var(--mist)}

.link-u{position:relative;display:inline-block;color:var(--white);padding-bottom:2px}
.link-u::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:16px;background:rgba(23,230,195,.5);transition:width var(--dur) var(--ease),background-color var(--dur) var(--ease)}
.link-u:hover{color:var(--cyan)}
.link-u:hover::after{width:100%;background:var(--cyan)}

/* ── 5. 按钮 ────────────────────────────────────────────── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:11px 18px;border:1px solid var(--stroke-soft);border-radius:2px;
  background:rgba(237,246,242,.03);color:var(--white);
  font-size:14px;letter-spacing:.08em;cursor:pointer;
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn:hover{border-color:var(--cyan);background:rgba(23,230,195,.1);color:var(--white)}
.btn:active{transform:translateY(1px)}
.btn--solid{background:var(--cyan);border-color:var(--cyan);color:#031714;font-weight:600}
.btn--solid:hover{background:#0FD3B3;border-color:#0FD3B3;color:#031714}
.btn--ghost{background:transparent;border-color:var(--stroke);color:var(--mist)}
.btn--ghost:hover{color:var(--white);border-color:var(--cyan)}

/* ── 6. 面包屑 ──────────────────────────────────────────── */
.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;color:var(--mist)}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:10px}
.breadcrumbs__link{color:var(--mist)}
.breadcrumbs__link:hover{color:var(--cyan)}
.breadcrumbs__sep{color:var(--stroke)}
.breadcrumbs__current{color:var(--white)}

/* ── 7. 正文容器 ────────────────────────────────────────── */
.prose{max-width:68ch;font-size:17px;line-height:1.8}
.prose > * + *{margin-top:1.1em}
.prose h2{font-family:var(--font-display);font-size:clamp(22px,2.4vw,28px);letter-spacing:.04em;margin-top:1.8em}
.prose h3{font-size:20px;letter-spacing:.02em;margin-top:1.5em}
.prose ul{display:grid;gap:.55em}
.prose ul li{position:relative;padding-left:1.2em}
.prose ul li::before{content:"";position:absolute;left:0;top:.78em;width:8px;height:1px;background:var(--cyan)}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(23,230,195,.35)}
.prose a:hover{border-bottom-color:var(--cyan)}
.prose code{font-family:var(--font-mono);font-size:.92em;color:var(--cyan);background:rgba(23,230,195,.08);padding:.1em .4em}

/* ── 8. 基础组件 ────────────────────────────────────────── */
.card{
  position:relative;padding:clamp(20px,2.4vw,28px);
  border:1px solid var(--stroke-soft);background:var(--glass);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.card--solid{background:var(--pitch);backdrop-filter:none;-webkit-backdrop-filter:none}
.card--night{background:rgba(6,28,24,.78)}
.card--wine{background:linear-gradient(180deg,rgba(124,31,62,.88),rgba(124,31,62,.58));border-color:rgba(237,246,242,.14)}
.card--indigo{background:linear-gradient(180deg,rgba(58,42,110,.88),rgba(58,42,110,.58));border-color:rgba(237,246,242,.14)}
.card__head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:14px}
.card__title{font-family:var(--font-display);font-size:20px;letter-spacing:.08em}
.card__coord{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--mist)}
.card__meta{margin-top:14px;font-size:12px;color:var(--mist)}

.panel{
  position:relative;padding:clamp(20px,2.6vw,34px);
  border:1px solid var(--stroke-soft);background:rgba(14,42,36,.5);
}
.panel__head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:14px;margin-bottom:18px;border-bottom:1px solid var(--stroke-soft)}
.panel__title{font-family:var(--font-display);font-size:20px;letter-spacing:.08em}
.panel__coord{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--mist)}

.notice{border-left:2px solid var(--cyan);background:rgba(23,230,195,.06);padding:14px 18px;font-size:14px;line-height:1.7}

.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 9px;border:1px solid var(--stroke-soft);color:var(--mist);font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase}
.tag--cyan{border-color:rgba(23,230,195,.5);color:var(--cyan)}
.tag--orange{border-color:rgba(255,106,19,.5);color:var(--orange)}
.tag--gold{border-color:rgba(199,162,39,.55);color:var(--gold)}
.tag--wine{border-color:rgba(124,31,62,.85);color:#F0C7D6}

.stat{display:grid;gap:6px}
.stat__value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(24px,3vw,32px);line-height:1;color:var(--white)}
.stat__unit{font-size:12px;color:var(--mist);letter-spacing:.08em}
.stat__label{font-size:13px;color:var(--mist);letter-spacing:.08em}

/* 数据表 */
.table-wrap{overflow-x:auto;border:1px solid var(--stroke-soft);background:rgba(6,28,24,.5);-webkit-overflow-scrolling:touch}
.data-table{width:100%;min-width:560px;font-size:14px}
.data-table caption{padding:14px 16px;text-align:left;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--mist);border-bottom:1px solid var(--stroke-soft)}
.data-table th,.data-table td{padding:11px 14px;text-align:left;vertical-align:top;border-bottom:1px solid rgba(44,90,80,.4)}
.data-table thead th{font-family:var(--font-mono);font-size:11px;font-weight:400;letter-spacing:.16em;text-transform:uppercase;color:var(--mist);background:rgba(14,42,36,.72)}
.data-table tbody tr{transition:background-color var(--dur) var(--ease)}
.data-table tbody tr:hover,.data-table tbody tr:focus-within{background:rgba(23,230,195,.07)}
.data-table .num-cell{font-family:var(--font-mono);font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}
.data-table td[data-emphasis]{color:var(--cyan)}
.row-note{display:block;margin-top:4px;font-size:12px;line-height:1.6;color:var(--mist);opacity:0;transform:translateY(-2px);transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease)}
.data-table tbody tr:hover .row-note,.data-table tbody tr:focus-within .row-note{opacity:1;transform:none}

.delta{display:inline-flex;align-items:center;gap:4px;font-family:var(--font-mono);font-size:13px;font-variant-numeric:tabular-nums;transition:transform var(--dur) var(--ease)}
.data-table tbody tr:hover .delta{transform:translateY(-1px)}
.delta--up{color:var(--orange)}
.delta--down{color:var(--mist)}
.delta--flat{color:rgba(155,182,175,.7)}

[data-mark]{transition:opacity var(--dur) var(--ease)}
body[data-mark-filter="up"] [data-mark]:not([data-mark="up"]),
body[data-mark-filter="down"] [data-mark]:not([data-mark="down"]),
body[data-mark-filter="flat"] [data-mark]:not([data-mark="flat"]){opacity:.22}

/* ── 9. 图片容器基础规则（页面阶段使用） ────────────────── */
.media-frame{
  position:relative;overflow:hidden;aspect-ratio:16/9;
  border:1px solid var(--stroke-soft);
  background:linear-gradient(180deg,var(--pitch),var(--night));
}
.media-frame > img,.media-frame > picture > img{width:100%;height:100%;object-fit:cover;filter:saturate(.82) contrast(1.06)}
.media-frame::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,rgba(6,28,24,.05) 30%,rgba(6,28,24,.78))}
.media-frame__coord{position:absolute;top:12px;left:12px;z-index:2;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--cyan)}
.media-frame__caption{position:absolute;left:14px;right:14px;bottom:12px;z-index:2;font-size:13px;line-height:1.6;color:var(--white)}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-frame--empty{background-image:linear-gradient(135deg,rgba(14,42,36,.92),rgba(6,28,24,.92)),repeating-linear-gradient(90deg,rgba(44,90,80,.4) 0 1px,transparent 1px 40px)}

/* ── 10. 侧边轨道（共享 header） ────────────────────────── */
.site-rail{
  position:fixed;top:0;left:0;bottom:0;z-index:80;
  width:var(--rail-w);display:flex;flex-direction:column;
  background:linear-gradient(180deg,#08221D 0%,#061C18 42%,#08221D 100%);
  border-right:1px solid var(--stroke-soft);
}
.site-rail::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(to bottom,rgba(44,90,80,.35) 1px,transparent 1px);
  background-size:100% 32px;
}
.site-rail::after{
  content:"";position:absolute;top:0;left:0;width:2px;height:100%;opacity:.9;
  background:linear-gradient(180deg,var(--cyan),rgba(23,230,195,0) 42%,rgba(23,230,195,0) 58%,var(--stroke));
}
.rail__frame{position:relative;z-index:1;display:flex;flex-direction:column;min-height:0;height:100%;padding:26px 22px 22px}

.rail__head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex:0 0 auto}
.brand{display:inline-flex;align-items:center;gap:12px;min-width:0;color:var(--white)}
.brand:hover{color:var(--white)}
.brand__mark{
  position:relative;flex:0 0 auto;display:grid;place-items:center;
  width:34px;height:34px;border:1px solid rgba(23,230,195,.6);background:rgba(23,230,195,.08);
}
.brand__mark::before{content:"";position:absolute;top:-1px;left:-1px;width:10px;height:10px;border-top:2px solid var(--cyan);border-left:2px solid var(--cyan)}
.brand__mark::after{content:"";position:absolute;right:-1px;bottom:-1px;width:10px;height:10px;border-right:2px solid var(--cyan);border-bottom:2px solid var(--cyan)}
.brand__dot{display:block;width:8px;height:8px;background:var(--cyan)}
.brand__text{display:flex;flex-direction:column;min-width:0}
.brand__name{font-family:var(--font-display);font-size:19px;line-height:1.2;letter-spacing:.14em;color:var(--white)}
.brand__line{margin-top:3px;font-size:10px;letter-spacing:.2em;color:var(--mist);white-space:nowrap}

.rail__toggle{
  display:none;align-items:center;gap:9px;padding:9px 12px;
  border:1px solid var(--stroke-soft);color:var(--white);
  font-size:12px;letter-spacing:.14em;cursor:pointer;
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.rail__toggle:hover{border-color:var(--cyan);background:rgba(23,230,195,.08)}
.rail__toggle-icon{display:block;width:15px}
.rail__toggle-bar{display:block;width:15px;height:1px;background:var(--white);transition:transform var(--dur) var(--ease)}
.rail__toggle-bar + .rail__toggle-bar{margin-top:5px}
.rail__toggle[aria-expanded="true"] .rail__toggle-bar:first-child{transform:translateY(3px) rotate(45deg)}
.rail__toggle[aria-expanded="true"] .rail__toggle-bar:last-child{transform:translateY(-3px) rotate(-45deg)}
.rail__toggle-label{color:var(--mist);transition:color var(--dur) var(--ease)}
.rail__toggle:hover .rail__toggle-label{color:var(--white)}

.rail__nav{
  position:relative;display:flex;flex-direction:column;flex:1 1 auto;min-height:0;
  margin-top:24px;padding-top:18px;border-top:1px solid var(--stroke-soft);
  overflow-y:auto;overscroll-behavior:contain;
}
.rail__caption{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:12px;font-family:var(--font-mono);font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--mist)}
.rail__coord{color:rgba(23,230,195,.6)}
.rail__list{display:grid;gap:1px}
.rail__item{min-width:0}
.rail__link{
  position:relative;display:flex;align-items:baseline;gap:12px;padding:9px 10px;
  color:var(--mist);border-left:1px solid transparent;
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.rail__link:hover{color:var(--white);background:rgba(23,230,195,.07);border-left-color:var(--cyan);padding-left:14px}
.rail__no{font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;color:var(--stroke);transition:color var(--dur) var(--ease)}
.rail__link:hover .rail__no{color:var(--cyan)}
.rail__label{font-size:15px;letter-spacing:.05em}
.rail__link[aria-current="page"]{color:var(--white);background:rgba(23,230,195,.1);border-left-color:var(--cyan)}
.rail__link[aria-current="page"] .rail__no{color:var(--cyan)}
.rail__link[aria-current="page"] .rail__label::after{content:"";display:inline-block;width:6px;height:6px;margin-left:8px;background:var(--cyan);vertical-align:middle}

.rail__legend{margin-top:20px;padding-top:16px;border-top:1px dashed var(--stroke-soft)}
.legend__title{margin-bottom:10px;font-family:var(--font-mono);font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--mist)}
.legend__items{display:flex;flex-wrap:wrap;gap:6px}
.legend__chip{
  display:inline-flex;align-items:center;gap:7px;padding:5px 10px;
  border:1px solid var(--stroke-soft);color:var(--mist);font-size:12px;letter-spacing:.06em;cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.legend__chip:hover{border-color:var(--cyan);color:var(--white)}
.legend__chip[aria-pressed="true"]{border-color:var(--cyan);background:rgba(23,230,195,.14);color:var(--white)}
.legend__swatch{display:block;width:9px;height:9px;background:var(--mist)}
.legend__swatch--up{background:var(--orange)}
.legend__swatch--down{background:var(--mist)}
.legend__swatch--flat{background:transparent;border:1px solid var(--stroke)}
.legend__text{font-size:11px;letter-spacing:.1em}

.rail__foot{flex:0 0 auto;margin-top:18px;padding-top:16px;border-top:1px solid var(--stroke-soft)}
.rail__stage{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--white)}
.rail__pulse{display:block;width:7px;height:7px;background:var(--cyan);box-shadow:0 0 0 3px rgba(23,230,195,.18)}
.rail__meta{margin-top:8px;font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:var(--mist)}
.rail__progress{position:relative;height:2px;margin-top:14px;background:rgba(44,90,80,.6);overflow:hidden}
.rail__progress-fill{display:block;height:100%;width:0;background:var(--cyan);transition:width 120ms linear}

/* ── 11. 页脚 ───────────────────────────────────────────── */
.site-foot{position:relative;border-top:1px solid var(--stroke-soft);background:linear-gradient(180deg,#061C18 0%,#08211C 100%);color:var(--mist)}
.site-foot::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.85;
  background-image:
    linear-gradient(to right,rgba(44,90,80,.22) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(44,90,80,.16) 1px,transparent 1px);
  background-size:96px 96px;
}
.foot__frame{position:relative;z-index:1;max-width:var(--maxw);margin-inline:auto;padding:clamp(40px,5vw,64px) var(--pad-x) 28px}

.foot__top-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;padding-bottom:26px;border-bottom:1px solid var(--stroke-soft)}
.foot__brand{display:flex;align-items:center;gap:14px}
.foot__mark{position:relative;flex:0 0 auto;width:34px;height:34px;border:1px solid rgba(23,230,195,.5);background:rgba(23,230,195,.07)}
.foot__mark::after{content:"";position:absolute;inset:9px;background:var(--cyan)}
.foot__name{font-family:var(--font-display);font-size:20px;line-height:1.2;letter-spacing:.16em;color:var(--white)}
.foot__tag{margin-top:4px;font-size:11px;letter-spacing:.2em;color:var(--mist)}
.foot__cta{flex:0 0 auto}

.foot__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(20px,3vw,40px);padding:clamp(28px,3.4vw,44px) 0}
.foot__col{min-width:0}
.foot__col-title{
  padding-bottom:10px;margin-bottom:14px;border-bottom:1px solid rgba(44,90,80,.45);
  font-family:var(--font-mono);font-size:11px;font-weight:400;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);
}
.foot__list{display:grid;gap:10px}
.foot__link{position:relative;display:inline-block;padding-bottom:2px;font-size:14px;color:var(--mist);transition:color var(--dur) var(--ease)}
.foot__link::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:16px;background:rgba(23,230,195,.5);transition:width var(--dur) var(--ease),background-color var(--dur) var(--ease)}
.foot__link:hover{color:var(--white)}
.foot__link:hover::after{width:100%;background:var(--cyan)}
.foot__list-note{font-size:13px;line-height:1.65;color:var(--mist);word-break:break-all}

.foot__contact{display:grid;grid-template-columns:minmax(0,220px) minmax(0,1fr);gap:24px;padding:clamp(24px,3vw,36px) 0;border-top:1px solid var(--stroke-soft)}
.foot__contact-title{font-family:var(--font-display);font-size:18px;letter-spacing:.1em;color:var(--white)}
.foot__contact-list{display:grid;gap:10px;min-width:0}
.foot__contact-item{display:grid;grid-template-columns:96px minmax(0,1fr);gap:14px;align-items:baseline}
.foot__contact-label{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--cyan)}
.foot__contact-value{font-size:14px;line-height:1.65;color:var(--white);word-break:break-word}

.foot__base{display:flex;flex-wrap:wrap;align-items:center;gap:14px 20px;padding-top:22px;border-top:1px solid var(--stroke-soft)}
.foot__legal{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--mist)}
.foot__note{font-size:12px;color:var(--mist)}
.foot__top{
  display:inline-flex;align-items:center;gap:8px;margin-left:auto;padding:9px 14px;
  border:1px solid var(--stroke-soft);color:var(--mist);font-size:12px;letter-spacing:.14em;cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.foot__top::before{content:"";width:8px;height:8px;border-top:1px solid currentColor;border-left:1px solid currentColor;transform:rotate(45deg) translate(1px,1px)}
.foot__top:hover,.foot__top.is-active{border-color:var(--cyan);color:var(--white);background:rgba(23,230,195,.08)}

/* ── 12. 响应式 ─────────────────────────────────────────── */
@media (max-width:1279px){
  :root{--rail-w:236px}
}
@media (max-width:1023px){
  :root{--rail-w:0px;--topbar-h:62px}
  body{padding-left:0;padding-top:var(--topbar-h)}

  .site-rail{
    top:0;left:0;right:0;bottom:auto;width:auto;height:var(--topbar-h);
    flex-direction:row;border-right:0;border-bottom:1px solid var(--stroke-soft);
    background:linear-gradient(90deg,#08221D,#061C18);
  }
  .site-rail::before{background-size:64px 100%;opacity:.4}
  .site-rail::after{width:100%;height:1px;background:linear-gradient(90deg,var(--cyan),rgba(23,230,195,0) 55%,var(--stroke))}
  .rail__frame{flex-direction:row;align-items:center;gap:14px;height:100%;padding:0 var(--pad-x);overflow:visible}
  .rail__head{flex:1 1 auto}
  .brand__line{display:none}
  .rail__toggle{display:inline-flex}

  .rail__nav{
    position:fixed;top:var(--topbar-h);left:0;right:0;
    max-height:calc(100dvh - var(--topbar-h));margin:0;padding:20px var(--pad-x) 28px;
    background:linear-gradient(180deg,#0A231E,#061C18);
    border-top:1px solid var(--stroke-soft);border-bottom:1px solid var(--stroke-soft);
    border-left:0;overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease);
  }
  .site-rail[data-open] .rail__nav{opacity:1;visibility:visible;transform:none}
  .rail__caption{margin-bottom:10px}
  .rail__list{gap:0}
  .rail__link{padding:13px 12px;font-size:16px}
  .rail__link:hover{padding-left:16px}
  .rail__legend{margin-top:22px}

  .rail__foot{flex:0 0 auto;margin:0 0 0 auto;padding:0;border:0;text-align:right}
  .rail__stage{justify-content:flex-end;font-size:11px;letter-spacing:.06em}
  .rail__meta{display:none}
  .rail__progress{position:absolute;left:0;right:0;bottom:-1px;margin:0;height:2px}

  .foot__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .foot__contact{grid-template-columns:minmax(0,1fr);gap:16px}
  .foot__contact-item{grid-template-columns:minmax(0,1fr);gap:2px}
  .foot__contact-label{font-size:10px}
}
@media (max-width:560px){
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .grid--split{grid-template-columns:minmax(0,1fr)}
  .foot__grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .foot__top-row{flex-direction:column;align-items:flex-start}
  .foot__cta{width:100%}
  .foot__top{margin-left:0;width:100%;justify-content:center}
}

/* ── 13. 动效偏好 ───────────────────────────────────────── */
@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;
  }
}