/* =========================================================
   安博地址主站 · site.css
   夜间球场记分牌：深墨绿控制室 + 荧光青柠 + 暖橙
   ========================================================= */

/* ---------- 1. 变量 ---------- */
:root{
  --ink-900:#071A15;
  --ink-800:#0F2C24;
  --ink-850:#0B231C;
  --ink-700:#163A31;
  --lime:#C8FF4D;
  --lime-hi:#DAFF84;
  --lime-soft:rgba(200,255,77,.12);
  --orange:#FF8A3D;
  --home-red:#E23B4E;
  --link:#6FE3C4;
  --text:#EAF6F0;
  --muted:#9DBBB0;
  --dim:#4A6B60;

  --font-cjk:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC","Heiti SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"SF Mono","DIN Alternate","Helvetica Neue",Arial,"PingFang SC",sans-serif;

  --rail-w:272px;
  --topbar-h:64px;
  --container:1280px;
  --gap:22px;
  --cut:20px;
  --cut-sm:12px;
  --ease:cubic-bezier(.4,0,.2,1);
  --edge:1px solid var(--ink-700);
  --shadow:0 18px 40px rgba(0,0,0,.38);
}

/* ---------- 2. Reset 与中文排版 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}
body{
  margin:0;
  font-family:var(--font-cjk);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.01em;
  color:var(--text);
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1100px 620px at 88% -12%, rgba(200,255,77,.07), transparent 62%),
    radial-gradient(900px 520px at 4% 108%, rgba(255,138,61,.06), transparent 60%),
    repeating-linear-gradient(115deg, rgba(22,58,49,.32) 0 1px, transparent 1px 88px);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,blockquote,dl,dd,address{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
address{font-style:normal}
::selection{background:var(--lime);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:2px}
html.nav-open,html.nav-open body{overflow:hidden}

/* ---------- 3. 布局基础 ---------- */
.container{
  width:min(var(--container), 100% - 32px);
  margin-inline:auto;
}
.page-main{
  display:block;
  padding:calc(var(--topbar-h) + 22px) 0 72px;
}
.grid{display:grid;gap:var(--gap)}
.grid--2{grid-template-columns:1fr}
.grid--3{grid-template-columns:1fr}
.grid--rail{grid-template-columns:1fr}

/* ---------- 4. 跳过链接 ---------- */
.skip-link{
  position:fixed;
  top:-70px;left:16px;
  z-index:200;
  padding:11px 20px;
  background:var(--lime);
  color:var(--ink-900);
  font-size:14px;font-weight:700;
  clip-path:polygon(0 0,100% 0,100% 100%,var(--cut-sm) 100%,0 calc(100% - var(--cut-sm)));
  transition:top .18s var(--ease);
}
.skip-link:focus{top:0}

/* ---------- 5. 品牌 ---------- */
.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  color:var(--text);
  min-width:0;
}
.brand__mark{
  position:relative;
  flex:none;
  width:34px;height:34px;
  display:grid;place-items:center;
  background:var(--lime);
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
  transition:background .2s var(--ease);
}
.brand__pulse{
  width:11px;height:11px;
  background:var(--ink-900);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
}
.brand:hover .brand__mark{background:var(--lime-hi)}
.brand__text{display:block;min-width:0}
.brand__name{
  display:block;
  font-size:17px;
  font-weight:800;
  letter-spacing:.08em;
  line-height:1.25;
}
.brand__tag{
  display:block;
  font-size:10px;
  letter-spacing:.2em;
  color:var(--muted);
  line-height:1.4;
}

/* ---------- 6. 头部：侧边轨道 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  background:linear-gradient(180deg,var(--ink-800),var(--ink-850));
  border-bottom:var(--edge);
  box-shadow:0 12px 30px rgba(0,0,0,.42);
  color:var(--text);
}
.scroll-progress{
  position:fixed;
  top:0;left:0;right:0;
  height:3px;
  z-index:120;
  pointer-events:none;
  background:transparent;
}
.scroll-progress__bar{
  display:block;
  width:0%;
  height:100%;
  background:linear-gradient(90deg,var(--lime),var(--orange));
}

.rail-top{
  display:flex;
  align-items:center;
  gap:12px;
  height:var(--topbar-h);
  padding:0 16px;
}

.cert{
  display:none;
  align-items:center;
  gap:8px;
  font-size:11px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--muted);
  text-transform:uppercase;
}
.cert__dot{
  flex:none;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 4px rgba(200,255,77,.16);
}

.nav-toggle{
  flex:none;
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:9px 13px;
  border:1px solid var(--ink-700);
  background:rgba(7,26,21,.55);
  color:var(--text);
  font-size:13px;
  font-weight:700;
  letter-spacing:.12em;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bars span{
  display:block;height:2px;width:18px;
  background:var(--lime);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.site-header[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars span:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-toggle__label{white-space:nowrap}

/* 抽屉 / 轨道主体 */
.rail-body{
  position:fixed;
  top:calc(var(--topbar-h) + 1px);
  left:0;right:0;bottom:0;
  display:block;
  padding:20px 16px 30px;
  overflow-y:auto;
  overscroll-behavior:contain;
  background:linear-gradient(180deg,var(--ink-850),var(--ink-900) 84%);
  transform:translateX(-102%);
  visibility:hidden;
  transition:transform .28s var(--ease),visibility .28s var(--ease);
  box-shadow:var(--shadow);
}
.site-header[data-open] .rail-body{
  transform:translateX(0);
  visibility:visible;
}

.rail-nav{display:block}
.rail-nav__caption{
  margin:0 0 12px;
  padding-left:14px;
  font-size:11px;
  font-weight:600;
  letter-spacing:.24em;
  color:var(--dim);
  text-transform:uppercase;
}
.rail-nav__list{display:grid;gap:4px}
.rail-nav__item{display:block}
.rail-nav__link{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px 14px 12px 18px;
  color:var(--muted);
  font-size:15px;
  font-weight:600;
  letter-spacing:.06em;
  background:transparent;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.rail-nav__link::before{
  content:"";
  position:absolute;
  left:0;top:14%;bottom:14%;
  width:3px;
  background:var(--lime);
  transform:scaleY(0);
  transform-origin:top center;
  transition:transform .22s var(--ease);
}
.rail-nav__link:hover{
  color:var(--text);
  background:var(--lime-soft);
}
.rail-nav__link:hover::before{transform:scaleY(.55)}
.rail-nav__link[aria-current="page"]{
  color:var(--lime);
  background:linear-gradient(90deg,var(--lime-soft),transparent 88%);
}
.rail-nav__link[aria-current="page"]::before{transform:scaleY(1)}
.rail-nav__idx{
  font-family:var(--font-num);
  font-size:11px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--dim);
  font-variant-numeric:tabular-nums;
  transition:color .2s var(--ease);
}
.rail-nav__link:hover .rail-nav__idx,
.rail-nav__link[aria-current="page"] .rail-nav__idx{color:var(--lime)}
.rail-nav__label{display:block}

.rail-nav__foot{
  margin-top:24px;
  padding-top:16px;
  border-top:var(--edge);
}
.rail-nav__meta{
  margin-bottom:12px;
  font-size:12px;
  line-height:1.7;
  color:var(--dim);
}
.rail-nav__cta{
  display:block;
  text-align:center;
  padding:12px 14px;
  background:var(--lime);
  color:var(--ink-900);
  font-size:14px;
  font-weight:800;
  letter-spacing:.08em;
  clip-path:polygon(0 0,calc(100% - var(--cut-sm)) 0,100% var(--cut-sm),100% 100%,var(--cut-sm) 100%,0 calc(100% - var(--cut-sm)));
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.rail-nav__cta:hover{background:var(--lime-hi);transform:translateY(-2px)}

.rail-tools{
  margin-top:auto;
  display:grid;
  gap:8px;
  padding-top:22px;
}
.rail-search{
  display:flex;
  align-items:center;
  gap:11px;
  padding:12px 14px;
  border:1px dashed var(--ink-700);
  background:rgba(7,26,21,.55);
  color:var(--muted);
  font-size:13px;
  letter-spacing:.06em;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.rail-search:hover{
  border-color:var(--lime);
  color:var(--text);
  background:rgba(200,255,77,.06);
}
.rail-search__icon{
  position:relative;
  flex:none;
  width:13px;height:13px;
  border:2px solid currentColor;
  border-radius:50%;
}
.rail-search__icon::after{
  content:"";
  position:absolute;
  right:-5px;bottom:-4px;
  width:7px;height:2px;
  background:currentColor;
  transform:rotate(45deg);
}
.rail-search__text{display:block}

.rail-fav{
  display:flex;
  align-items:center;
  gap:11px;
  padding:12px 14px;
  border:1px dashed var(--ink-700);
  background:rgba(7,26,21,.55);
  color:var(--muted);
  font-size:13px;
  letter-spacing:.06em;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.rail-fav:hover{border-color:var(--orange);color:var(--text);background:rgba(255,138,61,.08)}
.rail-fav__star{
  flex:none;
  width:14px;height:14px;
  background:var(--orange);
  clip-path:polygon(50% 0%,61% 35%,98% 35%,68% 57%,79% 91%,50% 70%,21% 91%,32% 57%,2% 35%,39% 35%);
}
.rail-fav__text{display:block}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  padding:52px 16px 26px;
  background:linear-gradient(180deg,var(--ink-900),#050F0C);
}
.footer-panel{
  width:min(var(--container),100%);
  margin-inline:auto;
  padding:34px 22px 20px;
  background:linear-gradient(160deg,var(--ink-800),var(--ink-850));
  border:var(--edge);
  clip-path:polygon(0 0,calc(100% - 28px) 0,100% 28px,100% 100%,28px 100%,0 calc(100% - 28px));
}
.footer-grid{display:grid;gap:30px}
.footer-col{min-width:0}
.footer-col--brand{display:grid;gap:14px;align-content:start}
.brand--footer .brand__name{font-size:18px}
.footer-note{
  font-size:14px;
  line-height:1.8;
  color:var(--muted);
  max-width:34ch;
}
.footer-cert{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:11px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--dim);
  text-transform:uppercase;
}
.footer-title{
  margin-bottom:14px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.24em;
  color:var(--lime);
  text-transform:uppercase;
}
.footer-list{display:grid;gap:10px}
.footer-link{
  position:relative;
  display:inline-block;
  font-size:15px;
  color:var(--muted);
  transition:color .2s var(--ease);
}
.footer-link::after{
  content:"";
  position:absolute;
  left:0;bottom:-2px;
  width:100%;height:1px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.footer-link:hover{color:var(--text)}
.footer-link:hover::after{transform:scaleX(1)}
.footer-contact{
  display:grid;
  gap:7px;
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--ink-700);
  font-size:13px;
  line-height:1.7;
  color:var(--muted);
  word-break:break-all;
}
.footer-contact__row{display:block}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
  justify-content:space-between;
  align-items:center;
  margin-top:28px;
  padding-top:16px;
  border-top:1px solid var(--ink-700);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--dim);
}
.footer-base__copy,.footer-base__icp{margin:0}

.to-top{
  position:fixed;
  right:18px;bottom:18px;
  z-index:95;
  width:46px;height:46px;
  display:grid;place-items:center;
  background:var(--lime);
  color:var(--ink-900);
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease),background .2s var(--ease);
}
.to-top[data-visible="true"]{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--lime-hi)}
.to-top__glyph{
  width:0;height:0;
  border-left:7px solid transparent;
  border-right:7px solid transparent;
  border-bottom:10px solid currentColor;
}

/* ---------- 8. 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 24px;
  font-size:15px;
  font-weight:800;
  letter-spacing:.05em;
  border:1px solid transparent;
  cursor:pointer;
  clip-path:polygon(0 0,calc(100% - var(--cut-sm)) 0,100% var(--cut-sm),100% 100%,var(--cut-sm) 100%,0 calc(100% - var(--cut-sm)));
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(200,255,77,.55)}
.btn--primary{background:var(--lime);color:var(--ink-900)}
.btn--primary:hover{background:var(--lime-hi);transform:translateY(-2px)}
.btn--ghost{background:transparent;border-color:var(--ink-700);color:var(--text)}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}
.btn--accent{background:var(--orange);color:#20100A}
.btn--accent:hover{background:#FFA25F;transform:translateY(-2px)}

/* ---------- 9. 面板 / 标签 / 数据块 ---------- */
.panel{
  position:relative;
  padding:22px;
  background:var(--ink-800);
  border:var(--edge);
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
  transition:border-color .22s var(--ease),transform .22s var(--ease),background .22s var(--ease);
}
.panel--interactive:hover{
  border-color:var(--lime);
  background:#113026;
  transform:translateY(-3px);
}
.panel__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:16px;
  padding-bottom:12px;
  border-bottom:1px solid var(--ink-700);
}
.panel__title{font-size:18px;font-weight:700;letter-spacing:.02em;line-height:1.4}
.panel__meta{
  flex:none;
  font-size:11px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--dim);
  text-transform:uppercase;
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 10px;
  border:1px solid var(--ink-700);
  color:var(--muted);
  font-size:11px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  white-space:nowrap;
}
.tag--live{
  color:var(--home-red);
  border-color:rgba(226,59,78,.5);
  background:rgba(226,59,78,.1);
}
.tag--time{
  color:var(--orange);
  border-color:rgba(255,138,61,.45);
  background:rgba(255,138,61,.08);
}
.tag--round{
  color:var(--link);
  border-color:rgba(111,227,196,.4);
  background:rgba(111,227,196,.08);
}

.stat{
  display:grid;
  gap:6px;
  padding:16px 18px;
  background:var(--ink-800);
  border-left:3px solid var(--lime);
}
.stat__num{
  font-family:var(--font-num);
  font-size:clamp(34px,6vw,54px);
  font-weight:800;
  line-height:1;
  letter-spacing:-.04em;
  font-variant-numeric:tabular-nums;
  color:var(--lime);
}
.stat__label{
  font-size:11px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--muted);
  text-transform:uppercase;
}
.num{
  font-family:var(--font-num);
  font-weight:800;
  line-height:1;
  letter-spacing:-.04em;
  font-variant-numeric:tabular-nums;
}

/* ---------- 10. 标题行 / 正文 / 面包屑 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--lime);
}
.eyebrow::before{
  content:"";
  display:block;
  width:26px;
  height:2px;
  background:var(--lime);
}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:14px;
  margin-bottom:20px;
}
.section-head__title{
  font-size:clamp(24px,3.6vw,34px);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.01em;
}
.section-head__meta{
  font-size:13px;
  color:var(--muted);
}

.prose{
  max-width:70ch;
  font-size:17px;
  line-height:1.8;
  color:var(--text);
}
.prose p{margin:0 0 1.1em}
.prose h2{
  margin:1.7em 0 .6em;
  font-size:clamp(22px,3vw,28px);
  font-weight:800;
  line-height:1.35;
}
.prose h3{
  margin:1.4em 0 .5em;
  font-size:19px;
  font-weight:700;
  color:var(--text);
}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.15em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin-bottom:.45em}
.prose li::marker{color:var(--lime)}
.prose a{
  color:var(--link);
  border-bottom:1px solid rgba(111,227,196,.4);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.prose a:hover{color:var(--lime);border-color:var(--lime)}
.prose strong{color:var(--lime);font-weight:700}
.prose blockquote{
  margin:1.4em 0;
  padding:14px 18px;
  background:var(--ink-800);
  border-left:3px solid var(--orange);
  color:var(--muted);
}

.link-underline{
  position:relative;
  color:var(--link);
  display:inline-block;
  transition:color .2s var(--ease);
}
.link-underline::after{
  content:"";
  position:absolute;
  left:0;bottom:-2px;
  width:100%;height:1px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.link-underline:hover{color:var(--lime)}
.link-underline:hover::after{transform:scaleX(1)}

.crumbs{
  font-size:13px;
  color:var(--muted);
  margin-bottom:18px;
}
.crumbs ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li + li::before{content:"/";color:var(--dim)}
.crumbs a{color:var(--muted);transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--lime)}
.crumbs [aria-current="page"]{color:var(--text)}

.divider-slant{
  height:1px;
  margin:34px 0;
  background:linear-gradient(90deg,var(--lime) 0%,rgba(200,255,77,.16) 40%,transparent 80%);
  transform:skewY(-1.2deg);
}

/* ---------- 11. 图像容器（供页面阶段使用） ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  width:100%;
  aspect-ratio:16 / 9;
  background:linear-gradient(155deg,var(--ink-800),var(--ink-900) 74%);
  border:var(--edge);
  clip-path:polygon(0 0,calc(100% - 22px) 0,100% 22px,100% 100%,0 100%);
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:4 / 5}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame img{
  width:100%;height:100%;
  object-fit:cover;
  display:block;
}
.media-frame--placeholder::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(60% 60% at 78% 18%, rgba(200,255,77,.14), transparent 70%),
    repeating-linear-gradient(135deg, rgba(22,58,49,.55) 0 2px, transparent 2px 16px);
}
.media-frame__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:14px 16px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--text);
  background:linear-gradient(180deg,rgba(7,26,21,0),rgba(7,26,21,.9));
}

/* ---------- 12. 入场显现协议 ---------- */
.reveal{transition:opacity .5s var(--ease),transform .5s var(--ease)}
html.js .reveal{opacity:0;transform:translateY(16px)}
html.js .reveal[data-visible="true"]{opacity:1;transform:none}

/* ---------- 13. 平板 ---------- */
@media (min-width:760px){
  .container{width:min(var(--container), 100% - 48px)}
  .page-main{padding-bottom:88px}
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rail-body{padding:24px 22px 34px}
  .footer-panel{padding:38px 30px 22px}
  .footer-grid{grid-template-columns:1.5fr 1fr}
  .footer-base{font-size:12.5px}
}

/* ---------- 14. 桌面：侧边轨道常驻 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  html{scroll-padding-top:24px}

  .site-header{
    right:auto;
    bottom:0;
    width:var(--rail-w);
    display:flex;
    flex-direction:column;
    border-bottom:0;
    border-right:var(--edge);
    background:linear-gradient(180deg,var(--ink-800) 0%,var(--ink-850) 58%,var(--ink-900) 100%);
    box-shadow:none;
  }
  .scroll-progress{left:var(--rail-w);right:0}

  .rail-top{
    flex-direction:column;
    align-items:flex-start;
    gap:16px;
    height:auto;
    padding:28px 22px 20px;
    border-bottom:var(--edge);
  }
  .brand__name{font-size:19px}
  .brand__tag{font-size:10.5px}
  .cert{display:inline-flex}
  .nav-toggle{display:none}

  .rail-body{
    position:static;
    inset:auto;
    transform:none;
    visibility:visible;
    flex:1 1 auto;
    min-height:0;
    display:flex;
    flex-direction:column;
    padding:20px 14px 22px;
    overflow-y:auto;
    overscroll-behavior:contain;
    background:transparent;
    box-shadow:none;
    scrollbar-width:thin;
    scrollbar-color:var(--ink-700) transparent;
  }
  .rail-nav{flex:0 0 auto}
  .rail-tools{margin-top:auto;padding-top:20px}

  .page-main{padding-top:42px}
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid--rail{grid-template-columns:minmax(210px,1fr) minmax(0,3fr)}
  .site-footer{padding:64px 32px 30px}
  .footer-grid{grid-template-columns:1.35fr .85fr 1.1fr;gap:36px}
  .to-top{right:26px;bottom:26px}
}

/* ---------- 15. 大屏 ---------- */
@media (min-width:1440px){
  :root{--rail-w:296px;--gap:26px}
  .panel{padding:26px}
}

/* ---------- 16. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.js .reveal{opacity:1;transform:none}
  .scroll-progress{display:none}
  .btn:hover,.panel--interactive:hover,.rail-nav__cta:hover,.to-top{transform:none}
}