/* =========================================================
   UNIBET赛场 · 中文站 V2.0 — 共享外壳样式 /assets/site.css
   数据画册 + 数字仪表盘：切角面板、斜向轨迹、珠宝色分区
   ========================================================= */

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

/* 2 · Tokens ----------------------------------------------- */
:root{
  --ink:#0A1A33;
  --ink-2:#08152A;
  --panel:#10315C;
  --lime:#8BFF3C;
  --cyan:#3DE0C8;
  --gold:#E0A93A;
  --snow:#F4F7FB;
  --frost:#C7D2E0;
  --slate:#3A4757;
  --pine:#0E323A;
  --wine:#6C1F3C;
  --indigo:#3B2168;
  --line:rgba(199,210,224,.16);
  --line-strong:rgba(199,210,224,.34);

  --font-sans:'Noto Sans SC','PingFang SC','Source Han Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --font-mono:'JetBrains Mono','Roboto Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shell:1240px;
  --pad:clamp(1rem,4vw,2rem);
  --rail-h:36px;
  --main-h:74px;
  --cut:18px;
  --cut-sm:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  --cut-panel:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,18px 100%,0 calc(100% - 18px));
  --cut-tag:polygon(0 0,calc(100% - 6px) 0,100% 6px,100% 100%,6px 100%,0 calc(100% - 6px));
}
@media (max-width:600px){
  :root{--rail-h:32px;--main-h:64px;--cut:14px;--cut-panel:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,14px 100%,0 calc(100% - 14px))}
}

/* 3 · Base ------------------------------------------------- */
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--snow);
  background-color:var(--ink);
  background-image:
    repeating-linear-gradient(115deg, rgba(199,210,224,.035) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(-115deg, rgba(199,210,224,.025) 0 1px, transparent 1px 96px);
  padding-top:calc(var(--rail-h) + var(--main-h));
  overflow-x:hidden;
}
::selection{background:var(--lime);color:var(--ink)}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
.ub-section--light :focus-visible{outline-color:var(--indigo)}

.ub-shell{width:min(calc(100% - (var(--pad) * 2)),var(--shell));margin-inline:auto}

/* 4 · 跳链 ------------------------------------------------ */
.ub-skip{
  position:fixed;top:.7rem;left:.7rem;z-index:140;
  padding:.7em 1.2em;background:var(--lime);color:var(--ink);
  font-weight:700;font-size:.85rem;letter-spacing:.02em;
  clip-path:var(--cut-sm);
  transform:translateY(-200%);
  transition:transform .22s ease;
}
.ub-skip:focus{transform:translateY(0)}

/* 5 · 双层头部 -------------------------------------------- */
.ub-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.ub-header__rail{
  height:var(--rail-h);
  display:flex;align-items:center;
  overflow:hidden;
  background:linear-gradient(100deg,var(--pine) 0%,var(--panel) 46%,var(--indigo) 100%);
  border-bottom:1px solid rgba(139,255,60,.16);
  transition:height .3s ease;
}
.ub-rail{display:flex;align-items:center;justify-content:space-between;gap:1rem;width:min(calc(100% - (var(--pad) * 2)),var(--shell));margin-inline:auto}
.ub-rail__brand{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.16em;
  color:var(--frost);white-space:nowrap;
  transition:font-size .3s ease;
}
.ub-rail__right{display:flex;align-items:center;gap:clamp(10px,2vw,22px);min-width:0}
.ub-rail__entry{
  display:flex;align-items:center;gap:.55em;
  font-size:.72rem;letter-spacing:.08em;color:var(--cyan);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.ub-rail__dot{width:6px;height:6px;flex:0 0 auto;background:var(--lime);transform:rotate(45deg)}
.ub-rail__cta{
  flex:0 0 auto;
  font-family:var(--font-mono);font-size:.72rem;font-weight:700;letter-spacing:.06em;
  padding:.42em .9em;background:var(--lime);color:var(--ink);
  clip-path:var(--cut-sm);
  transition:background .2s ease,color .2s ease;
}
.ub-rail__cta:hover{background:var(--cyan);color:var(--ink)}

.ub-header__main{
  height:var(--main-h);display:flex;align-items:center;
  background:var(--ink);
  transition:box-shadow .3s ease;
}
.ub-barnav{display:flex;align-items:center;gap:clamp(14px,2.4vw,40px)}

.ub-brand{display:inline-flex;align-items:center;gap:.72rem;flex:0 0 auto}
.ub-brand__mark{
  width:38px;height:38px;display:grid;place-items:center;
  background:var(--lime);color:var(--ink);
  font-family:var(--font-mono);font-weight:700;font-size:1.05rem;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 11px),calc(100% - 11px) 100%,0 100%);
}
.ub-brand__text{display:flex;flex-direction:column;line-height:1.2}
.ub-brand__name{font-weight:800;font-size:1.02rem;letter-spacing:-.02em;color:var(--snow)}
.ub-brand__sub{font-family:var(--font-mono);font-size:.64rem;letter-spacing:.18em;color:var(--gold)}
.ub-brand--ghost .ub-brand__mark{background:transparent;color:var(--lime);box-shadow:inset 0 0 0 2px var(--lime)}

.ub-nav{flex:1 1 auto}
.ub-nav__list{display:flex;align-items:center;justify-content:flex-end;gap:clamp(4px,1.3vw,18px)}
.ub-nav__link{
  position:relative;display:inline-block;padding:.55em .25em;
  font-size:.95rem;color:var(--frost);
  transition:color .2s ease;
}
.ub-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:.15em;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;
  transition:transform .28s cubic-bezier(.22,.7,.2,1);
}
.ub-nav__link:hover{color:var(--snow)}
.ub-nav__link:hover::after{transform:scaleX(1)}
.ub-nav__link[aria-current="page"]{color:var(--lime);font-weight:700}
.ub-nav__link[aria-current="page"]::after{transform:scaleX(1);background:var(--cyan)}

.ub-burger{
  display:none;align-items:center;gap:.65rem;
  padding:.55em .85em;border:1px solid var(--line-strong);
  color:var(--snow);font-size:.85rem;font-weight:600;letter-spacing:.04em;
  clip-path:var(--cut-sm);
}
.ub-burger__bars{display:inline-flex;flex-direction:column;gap:4px;width:20px}
.ub-burger__bar{display:block;height:2px;background:currentColor;transition:transform .24s ease,opacity .2s ease}
.ub-burger[aria-expanded="true"] .ub-burger__bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.ub-burger[aria-expanded="true"] .ub-burger__bar:nth-child(2){opacity:0}
.ub-burger[aria-expanded="true"] .ub-burger__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.ub-progress{position:absolute;left:0;right:0;bottom:0;height:2px;background:rgba(199,210,224,.14);pointer-events:none}
.ub-progress__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--lime));
  transition:transform .12s linear;
}

.ub-header[data-scrolled] .ub-header__rail{height:26px}
.ub-header[data-scrolled] .ub-rail__brand{font-size:.66rem}
.ub-header[data-scrolled] .ub-header__main{box-shadow:0 14px 34px rgba(4,10,22,.55)}

/* 6 · 页脚归档栏 ------------------------------------------ */
.ub-footer{
  position:relative;
  margin-top:clamp(3rem,6vw,6rem);
  background:linear-gradient(178deg,var(--ink) 0%,var(--pine) 44%,var(--ink-2) 100%);
  color:var(--frost);
  border-top:1px solid var(--line);
  overflow:hidden;
}
.ub-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:clamp(26px,4vw,58px);
  background:linear-gradient(100deg,var(--wine),var(--indigo) 48%,var(--pine) 100%);
  clip-path:polygon(0 0,100% 0,0 100%);
  opacity:.85;pointer-events:none;
}
.ub-footer__grid{
  position:relative;
  display:grid;
  grid-template-columns:minmax(220px,1.45fr) minmax(110px,.72fr) minmax(110px,.72fr) minmax(110px,.72fr) minmax(230px,1.35fr);
  gap:clamp(1.4rem,3vw,3rem);
  padding:clamp(3rem,6vw,4.8rem) 0 0;
}
.ub-footer__brandcol{display:flex;flex-direction:column;align-items:flex-start}
.ub-footer__line{margin-top:1.1rem;font-size:.95rem;line-height:1.8;color:var(--snow);max-width:34ch}
.ub-footer__region{margin-top:.6rem;font-size:.8rem;line-height:1.7;color:var(--cyan);max-width:34ch}
.ub-footer__brandcol .ub-btn{margin-top:1.3rem}

.ub-footer__coltitle{
  position:relative;padding-top:1rem;margin-bottom:1rem;
  font-family:var(--font-mono);font-size:.74rem;font-weight:400;
  letter-spacing:.2em;color:var(--gold);
}
.ub-footer__coltitle::before{content:"";position:absolute;top:0;left:0;width:26px;height:2px;background:var(--lime)}
.ub-footer__links{display:flex;flex-direction:column;gap:.6rem}
.ub-footer__link{
  display:inline-block;font-size:.92rem;color:var(--frost);
  transition:color .2s ease,padding-left .22s ease;
}
.ub-footer__link:hover{color:var(--lime);padding-left:.35rem}

.ub-contact{display:flex;flex-direction:column;gap:.8rem}
.ub-contact__row{display:flex;flex-direction:column;gap:.15rem}
.ub-contact__label{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.16em;color:var(--gold)}
.ub-contact__val{font-size:.9rem;line-height:1.7;color:var(--snow);word-break:break-word}
.ub-footer__note{
  margin-top:1.1rem;padding-left:.9rem;
  border-left:1px solid var(--line-strong);
  font-size:.78rem;line-height:1.75;color:var(--frost);
}
.ub-footer__bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:.6rem 1.6rem;
  margin-top:clamp(2rem,4vw,3.4rem);
  padding:1.3rem 0 1.8rem;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:.76rem;letter-spacing:.08em;color:var(--frost);
}
.ub-footer__legal{color:var(--snow)}
.ub-footer__icp{color:var(--gold)}
.ub-footer__meta{color:var(--frost)}

/* 7 · 通用按钮 / 标签 / 文本 ------------------------------ */
.ub-btn{
  display:inline-flex;align-items:center;gap:.6em;
  padding:.85em 1.5em;font-size:.95rem;font-weight:700;letter-spacing:-.01em;
  background:var(--lime);color:var(--ink);
  clip-path:var(--cut-sm);
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.ub-btn:hover{background:var(--cyan);transform:translateY(-2px)}
.ub-btn--lime{background:var(--lime);color:var(--ink)}
.ub-btn--ghost{background:transparent;color:var(--snow);box-shadow:inset 0 0 0 1px var(--line-strong)}
.ub-btn--ghost:hover{background:rgba(139,255,60,.1);color:var(--lime)}

.ub-kicker{
  display:inline-flex;align-items:center;gap:.7em;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.22em;
  color:var(--gold);
}
.ub-kicker::before{content:"";width:24px;height:1px;background:currentColor;flex:0 0 auto}

.ub-h1{font-size:clamp(2.6rem,6vw,5.4rem);font-weight:300;line-height:1.04;letter-spacing:-.03em;color:var(--snow)}
.ub-h2{font-size:clamp(1.6rem,3vw,2.6rem);font-weight:800;line-height:1.2;letter-spacing:-.02em;color:var(--snow)}
.ub-h3{font-size:clamp(1.05rem,1.6vw,1.3rem);font-weight:700;line-height:1.45;letter-spacing:-.01em;color:var(--snow)}
.ub-lead{max-width:46ch;font-size:clamp(1rem,1.4vw,1.15rem);line-height:1.85;color:var(--frost)}
.ub-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.ub-prose{max-width:68ch}
.ub-prose p{margin-bottom:1.1em;color:var(--frost)}
.ub-prose p:last-child{margin-bottom:0}

.ub-rule{height:1px;border:0;background:var(--line);margin:clamp(1.4rem,3vw,2.6rem) 0}
.ub-slant{
  height:clamp(18px,3vw,40px);
  background:linear-gradient(100deg,var(--wine),var(--indigo) 58%,transparent 100%);
  clip-path:polygon(0 0,100% 0,0 100%);
  opacity:.9;
}

/* 8 · 分区与网格 ------------------------------------------ */
.ub-section{position:relative;padding:clamp(3rem,7vw,6.5rem) 0}
.ub-section--light{background:var(--snow);color:var(--slate)}
.ub-section--light .ub-h1,.ub-section--light .ub-h2,.ub-section--light .ub-h3{color:var(--ink)}
.ub-section--light .ub-lead,.ub-section--light .ub-prose p{color:var(--slate)}
.ub-section--pine{background:var(--pine)}
.ub-section--wine{background:var(--wine)}
.ub-section--indigo{background:var(--indigo)}

.ub-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:clamp(16px,2vw,28px)}
.ub-col-3{grid-column:span 3}
.ub-col-4{grid-column:span 4}
.ub-col-5{grid-column:span 5}
.ub-col-6{grid-column:span 6}
.ub-col-7{grid-column:span 7}
.ub-col-8{grid-column:span 8}

/* 9 · 组件 ------------------------------------------------ */
.ub-panel{
  position:relative;
  padding:clamp(1.2rem,2.4vw,2rem);
  background:var(--panel);color:var(--snow);
  clip-path:var(--cut-panel);
}
.ub-panel--pine{background:var(--pine)}
.ub-panel--wine{background:var(--wine)}
.ub-panel--snow{background:var(--snow);color:var(--slate)}
.ub-panel--snow .ub-h3,.ub-panel--snow .ub-h2{color:var(--ink)}

.ub-card{
  position:relative;display:flex;flex-direction:column;gap:.8rem;
  padding:clamp(1rem,2vw,1.6rem);
  background:var(--panel);
  clip-path:var(--cut-panel);
  transition:transform .3s ease,background .3s ease;
}
.ub-card:hover{transform:translateY(-4px);background:#14396A}
.ub-card__meta{display:flex;flex-wrap:wrap;gap:.9rem;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.14em;color:var(--gold)}
.ub-card__title{font-size:1.15rem;font-weight:700;line-height:1.45;letter-spacing:-.01em;color:var(--snow)}
.ub-card__text{font-size:.92rem;line-height:1.8;color:var(--frost)}
.ub-card__foot{margin-top:auto;display:flex;align-items:center;gap:.6rem;font-family:var(--font-mono);font-size:.75rem;color:var(--cyan)}

.ub-steps{display:grid;gap:clamp(14px,2vw,22px);grid-template-columns:repeat(auto-fit,minmax(210px,1fr));counter-reset:step}
.ub-step{
  position:relative;
  padding:1.3rem 1.2rem 1.2rem;
  background:var(--panel);color:var(--frost);
  clip-path:var(--cut-panel);
  font-size:.92rem;line-height:1.8;
}
.ub-step::before{
  display:block;margin-bottom:.7rem;
  counter-increment:step;content:counter(step,decimal-leading-zero);
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.2em;color:var(--gold);
}

.ub-toc{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.ub-toc__row{
  display:flex;align-items:baseline;gap:1rem;
  padding:.9rem .2rem;border-bottom:1px solid var(--line);
  transition:background .22s ease,padding-left .22s ease;
}
.ub-toc__row:hover{background:rgba(139,255,60,.06);padding-left:.7rem}
.ub-toc__num{flex:0 0 auto;font-family:var(--font-mono);font-size:.76rem;color:var(--gold)}
.ub-toc__label{font-size:1rem;font-weight:600;color:var(--snow)}
.ub-toc__lead{flex:1 1 auto;border-bottom:1px dashed var(--line-strong);transform:translateY(-.28em)}
.ub-toc__meta{flex:0 0 auto;font-family:var(--font-mono);font-size:.74rem;color:var(--frost)}
.ub-section--light .ub-toc{border-top-color:rgba(58,71,87,.22)}
.ub-section--light .ub-toc__row{border-bottom-color:rgba(58,71,87,.22)}
.ub-section--light .ub-toc__label{color:var(--ink)}

.ub-facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line)}
.ub-facts__cell{background:var(--ink);padding:1.1rem 1.2rem}
.ub-facts__label{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.16em;color:var(--gold)}
.ub-facts__value{font-family:var(--font-mono);font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.3;color:var(--snow)}

.ub-scale{position:relative;height:6px;background:rgba(199,210,224,.16)}
.ub-scale__bar{position:absolute;top:0;bottom:0;left:0;width:0;background:linear-gradient(90deg,var(--cyan),var(--lime))}
.ub-scale__ticks{display:flex;justify-content:space-between;margin-top:.45rem;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.08em;color:var(--frost)}

.ub-band{
  display:flex;gap:clamp(12px,1.6vw,20px);
  overflow-x:auto;scroll-snap-type:x proximity;
  padding:.4rem .2rem 1.2rem;
  scrollbar-width:thin;scrollbar-color:rgba(199,210,224,.35) transparent;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 26px,#000 calc(100% - 26px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 26px,#000 calc(100% - 26px),transparent 100%);
}
.ub-band > *{flex:0 0 clamp(240px,30vw,340px);scroll-snap-align:start}
.ub-band::-webkit-scrollbar{height:6px}
.ub-band::-webkit-scrollbar-track{background:transparent}
.ub-band::-webkit-scrollbar-thumb{background:rgba(199,210,224,.3)}

.ub-tag{
  display:inline-flex;align-items:center;gap:.4em;
  padding:.32em .72em;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;
  color:var(--cyan);box-shadow:inset 0 0 0 1px rgba(61,224,200,.45);
  clip-path:var(--cut-tag);
}
.ub-tag--lime{color:var(--lime);box-shadow:inset 0 0 0 1px rgba(139,255,60,.5)}
.ub-tag--gold{color:var(--gold);box-shadow:inset 0 0 0 1px rgba(224,169,58,.5)}

.ub-note{
  padding:.25rem 0 .25rem 1rem;
  border-left:2px solid var(--gold);
  font-size:.88rem;line-height:1.8;color:var(--frost);
}
.ub-section--light .ub-note{color:var(--slate)}

.ub-crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:.55em;
  padding:1.1rem 0;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;color:var(--frost);
}
.ub-crumbs a{color:var(--cyan)}
.ub-crumbs a:hover{color:var(--lime)}
.ub-crumbs li:not(:last-child)::after{content:"/";margin-left:.55em;color:var(--gold)}
.ub-crumbs__current{color:var(--snow)}

/* 10 · 媒体容器（页面阶段放置图片） ----------------------- */
.ub-media{
  position:relative;overflow:hidden;isolation:isolate;
  background-color:var(--panel);
  background-image:
    repeating-linear-gradient(135deg, rgba(139,255,60,.07) 0 2px, transparent 2px 13px),
    linear-gradient(160deg,var(--panel),var(--indigo));
  clip-path:var(--cut-panel);
}
.ub-media img,.ub-media video{width:100%;height:100%;object-fit:cover}
.ub-media::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    linear-gradient(180deg,rgba(10,26,51,.08) 0%,rgba(10,26,51,.74) 82%),
    linear-gradient(115deg,rgba(59,33,104,.4) 0%,transparent 58%);
}
.ub-media__cap{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:clamp(.8rem,1.6vw,1.3rem);
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.1em;color:var(--snow);
}
.ub-media--16x9{aspect-ratio:16/9}
.ub-media--21x9{aspect-ratio:21/9}
.ub-media--4x5{aspect-ratio:4/5}
.ub-media--1x1{aspect-ratio:1/1}

/* 11 · 页面级筛选器 -------------------------------------- */
.ub-filter{
  position:relative;display:inline-flex;flex-wrap:wrap;gap:.3rem;
  padding:.35rem;
  background:rgba(16,49,92,.7);
  box-shadow:inset 0 0 0 1px var(--line);
  clip-path:var(--cut-sm);
}
.ub-filter__btn{
  position:relative;z-index:2;
  padding:.5em 1.05em;
  font-size:.85rem;font-weight:600;color:var(--frost);
  transition:color .22s ease;
}
.ub-filter__btn:hover{color:var(--snow)}
.ub-filter__btn[aria-pressed="true"]{color:var(--ink)}
.ub-filter__ind{
  position:absolute;top:.35rem;bottom:.35rem;left:0;width:0;z-index:1;
  background:var(--lime);
  clip-path:var(--cut-tag);
  transition:transform .3s cubic-bezier(.22,.7,.2,1),width .3s cubic-bezier(.22,.7,.2,1);
}
.ub-filter__count{
  display:inline-block;margin-left:.9rem;
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.1em;color:var(--frost);
}

/* 12 · 显现动效协议 -------------------------------------- */
.ub-js [data-reveal]{
  opacity:0;
  transform:translate3d(0,26px,0) rotate(.5deg);
  transition:opacity .6s ease,transform .75s cubic-bezier(.2,.7,.2,1);
  transition-delay:var(--reveal-delay,0ms);
}
.ub-js [data-reveal].is-in{opacity:1;transform:none}

/* 13 · 响应式 -------------------------------------------- */
@media (max-width:1080px){
  .ub-footer__grid{grid-template-columns:repeat(3,1fr)}
  .ub-footer__brandcol{grid-column:1/-1}
  .ub-footer__contact{grid-column:1/-1}
}
@media (max-width:960px){
  .ub-burger{display:inline-flex}
  .ub-barnav{gap:.8rem}
  .ub-nav{
    position:fixed;left:0;right:0;top:calc(var(--rail-h) + var(--main-h));
    max-height:calc(100vh - var(--rail-h) - var(--main-h));
    overflow-y:auto;
    padding:1.2rem var(--pad) 2rem;
    background:linear-gradient(180deg,var(--panel) 0%,var(--ink) 78%);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 50px rgba(4,10,22,.6);
    opacity:0;visibility:hidden;pointer-events:none;
    transform:translateY(-10px);
    transition:opacity .24s ease,transform .28s ease,visibility .28s;
  }
  .ub-nav[data-open]{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
  .ub-nav__list{flex-direction:column;align-items:stretch;gap:0;justify-content:flex-start}
  .ub-nav__item{counter-increment:nav;border-bottom:1px solid var(--line)}
  .ub-nav__list{counter-reset:nav}
  .ub-nav__link{display:block;padding:1rem .2rem;font-size:1.3rem;font-weight:600;letter-spacing:-.01em}
  .ub-nav__link::after{display:none}
  .ub-nav__link::before{
    display:inline-block;margin-right:.9em;
    content:counter(nav,decimal-leading-zero);
    font-family:var(--font-mono);font-size:.72rem;letter-spacing:.16em;color:var(--gold);
  }
  .ub-nav__link[aria-current="page"]::before{color:var(--lime)}
  .ub-grid{grid-template-columns:repeat(6,1fr)}
  .ub-col-7,.ub-col-8{grid-column:span 6}
}
@media (max-width:760px){
  .ub-rail__entry{font-size:.68rem;max-width:48vw}
  .ub-facts{grid-template-columns:repeat(auto-fit,minmax(130px,1fr))}
}
@media (max-width:620px){
  .ub-rail__entry{display:none}
  .ub-brand__mark{width:34px;height:34px;font-size:.95rem}
  .ub-burger__label{display:none}
  .ub-footer__grid{grid-template-columns:1fr 1fr}
  .ub-footer__brandcol,.ub-footer__contact{grid-column:1/-1}
  .ub-footer__bottom{flex-direction:column;align-items:flex-start}
  .ub-grid{grid-template-columns:1fr}
  .ub-grid > *{grid-column:1/-1 !important}
  .ub-band > *{flex:0 0 78vw}
}

/* 14 · 动效降级 ------------------------------------------ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .ub-js [data-reveal]{opacity:1;transform:none}
}