/* =========================================================
   boma-arena.com.cn — 共享样式 /assets/site.css
   夜间赛场数据舱 · 侧轨导航 · Bento 底板
   ========================================================= */

/* ---- 1. 重置 ---- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}

/* ---- 2. 设计令牌 ---- */
:root{
  --carbon:#0B0E0F;
  --graphite:#14181A;
  --raised:#1E2A2F;
  --silver:#9AA5AB;
  --ink:#C9D6DE;
  --white:#F4F7F8;
  --green:#2BE08A;
  --green-deep:#0E7A4A;
  --orange:#FF7A2F;
  --orange-deep:#8A3B12;

  --line:rgba(154,165,171,.20);
  --line-strong:rgba(154,165,171,.42);
  --grid-line:rgba(154,165,171,.045);

  --rail-w:96px;
  --status-h:44px;
  --gutter:clamp(16px,3vw,40px);
  --maxw:1280px;

  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;

  --ease:cubic-bezier(.2,.8,.2,1);
  --dur:.2s;

  --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",ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}

/* ---- 3. 基础排版与页面底色 ---- */
body{
  min-height:100vh;
  background:var(--carbon);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  padding-left:var(--rail-w);
  padding-top:var(--status-h);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(var(--grid-line) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:radial-gradient(120% 90% at 78% 68%,#000 0%,transparent 72%);
  mask-image:radial-gradient(120% 90% at 78% 68%,#000 0%,transparent 72%);
}
body>header,body>main,body>footer,body>div,body>section{position:relative;z-index:1}

h1,h2,h3,h4{
  color:var(--white);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.18;
  text-wrap:balance;
}
h1{font-size:clamp(2.4rem,6vw,4.5rem)}
h2{font-size:clamp(1.7rem,3.4vw,2.6rem)}
h3{font-size:clamp(1.15rem,2vw,1.5rem);font-weight:700}
h4{font-size:1.02rem;font-weight:700;letter-spacing:0}
p{text-wrap:pretty}
strong{color:var(--white);font-weight:700}
::selection{background:var(--green);color:#04150D}

/* ---- 4. 通用工具 ---- */
.wrap{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  letter-spacing:.02em;
}
.prose{max-width:70ch}
.prose p+p{margin-top:1.05em}
.prose ul{margin-top:1em;display:grid;gap:.55em}
.prose li{position:relative;padding-left:1.15em}
.prose li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--green);
}
.section{padding-block:clamp(40px,6vw,88px)}
.section__head{
  display:grid;
  gap:12px;
  margin-bottom:clamp(24px,3vw,44px);
  max-width:70ch;
}
.section__lead{color:var(--silver);font-size:1.02rem}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--green);
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:currentColor;
  opacity:.7;
}

/* ---- 5. 按钮 ---- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:.94rem;
  font-weight:700;
  line-height:1.3;
  letter-spacing:0;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn--primary{background:var(--green);color:#04150D}
.btn--primary:hover{background:#4BEB9D;transform:translateY(-1px)}
.btn--primary:active{background:var(--green-deep);color:var(--white);transform:none}
.btn--ghost{border-color:var(--line-strong);color:var(--white);background:rgba(244,247,248,.02)}
.btn--ghost:hover{border-color:var(--green);color:var(--green);transform:translateY(-1px)}
.btn--ghost:active{background:var(--raised);transform:none}
.btn--legacy{border-color:rgba(255,122,47,.55);color:var(--orange);background:rgba(255,122,47,.06)}
.btn--legacy:hover{background:var(--orange-deep);border-color:var(--orange);color:var(--white)}
.btn--legacy:active{background:#6E2E0D;color:var(--white)}

/* ---- 6. 状态胶囊 ---- */
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--graphite);
  font-family:var(--font-mono);
  font-size:.72rem;
  line-height:1.5;
  letter-spacing:.04em;
  color:var(--silver);
  white-space:nowrap;
}
.chip--green{color:var(--green);border-color:rgba(43,224,138,.42);background:rgba(43,224,138,.08)}
.chip--orange{color:var(--orange);border-color:rgba(255,122,47,.45);background:rgba(255,122,47,.08)}

/* ---- 7. 面包屑 ---- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.04em;
  color:var(--silver);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:10px}
.breadcrumb li+li::before{content:"/";color:var(--line-strong)}
.breadcrumb a{transition:color var(--dur) var(--ease)}
.breadcrumb a:hover{color:var(--green)}
.breadcrumb [aria-current="page"]{color:var(--white)}

/* ---- 8. Bento 底板与模块 ---- */
.bento{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:clamp(16px,2vw,24px);
}
.bento>*{grid-column:span 12;min-width:0}
@media (min-width:768px){
  .span-3{grid-column:span 3}
  .span-4{grid-column:span 4}
  .span-5{grid-column:span 5}
  .span-6{grid-column:span 6}
  .span-7{grid-column:span 7}
  .span-8{grid-column:span 8}
  .span-9{grid-column:span 9}
  .span-12{grid-column:span 12}
}
.panel{
  position:relative;
  overflow:hidden;
  background:var(--graphite);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:clamp(20px,2.6vw,32px);
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.panel--raised{background:var(--raised)}
.panel--focus{
  border-color:rgba(43,224,138,.42);
  box-shadow:0 0 0 1px rgba(43,224,138,.12),0 30px 70px -40px rgba(43,224,138,.45);
}
.panel--legacy{border-color:rgba(255,122,47,.34)}
a.panel:hover,a.panel:focus-visible{border-color:var(--line-strong);background:var(--raised);transform:translateY(-2px)}
.panel__title{margin-bottom:10px}
.panel__text{color:var(--silver);font-size:.96rem}

/* ---- 9. 数据块 ---- */
.stat{display:grid;gap:4px;text-align:right}
.stat__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  font-size:clamp(1.5rem,3.2vw,2.3rem);
  line-height:1.1;
  color:var(--white);
}
.stat__value--green{color:var(--green)}
.stat__value--orange{color:var(--orange)}
.stat__label{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.08em;color:var(--silver)}

/* ---- 10. 斜切主题带 ---- */
.slant-band{
  position:relative;
  padding-block:clamp(18px,3vw,30px);
  border-block:1px solid var(--line);
  background:linear-gradient(90deg,rgba(43,224,138,.07),rgba(20,24,26,.5) 55%,rgba(255,122,47,.05));
}
.slant-band::before{
  content:"";
  position:absolute;
  left:0;right:0;top:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--green) 18%,transparent 52%,var(--orange) 92%,transparent);
  opacity:.55;
}

/* ---- 11. 图片容器基础规则 ---- */
.media{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(135deg,var(--raised),#0D1113 80%);
  aspect-ratio:16/9;
  isolation:isolate;
}
.media--wide{aspect-ratio:21/9}
.media--portrait{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.92) contrast(1.06) brightness(.94);
}
.media__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:16px 20px 14px;
  background:linear-gradient(0deg,rgba(11,14,15,.92),rgba(11,14,15,0));
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.04em;
  color:var(--silver);
}

/* ---- 12. 显现动效 ---- */
.has-js [data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.has-js [data-reveal].is-revealed{opacity:1;transform:none}

/* ---- 13. 页头：状态条 ---- */
.site-header{position:relative;z-index:60}

.skip-link{
  position:fixed;
  left:12px;
  top:-70px;
  z-index:200;
  padding:11px 20px;
  border-radius:var(--r-pill);
  background:var(--green);
  color:#04150D;
  font-weight:700;
  font-size:.9rem;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:10px}

.status-bar{
  position:fixed;
  top:0;
  left:var(--rail-w);
  right:0;
  height:var(--status-h);
  z-index:70;
  display:flex;
  align-items:center;
  gap:clamp(10px,1.8vw,26px);
  padding:0 var(--gutter);
  background:rgba(11,14,15,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  font-size:.78rem;
  color:var(--silver);
  overflow:hidden;
}
.status-brand{display:none;align-items:center;gap:9px;color:var(--white);font-weight:800;letter-spacing:-.01em;flex:none}
.status-brand__text{white-space:nowrap}

.status-chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  border:1px solid rgba(43,224,138,.35);
  background:rgba(43,224,138,.07);
  color:var(--white);
  font-size:.74rem;
  letter-spacing:.02em;
  white-space:nowrap;
  flex:none;
}
.status-chip .mono{color:var(--green);font-weight:700}
.status-chip__dot{
  width:7px;height:7px;
  border-radius:50%;
  background:var(--green);
  box-shadow:0 0 0 0 rgba(43,224,138,.5);
  animation:pulse 2.4s var(--ease) infinite;
  flex:none;
}
@keyframes pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(43,224,138,.5)}
  50%{opacity:.65;box-shadow:0 0 0 6px rgba(43,224,138,0)}
}

.status-meta{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.06em;
  color:var(--silver);
  white-space:nowrap;
}
.status-meta .mono{color:var(--white)}

.status-links{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
  flex:none;
}
.status-link{
  display:inline-flex;
  align-items:center;
  padding:5px 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  color:var(--ink);
  font-size:.76rem;
  font-weight:600;
  white-space:nowrap;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.status-link:hover{border-color:var(--green);color:var(--green);background:rgba(43,224,138,.08)}
.status-link:active{background:var(--green-deep);color:var(--white);border-color:var(--green-deep)}
.status-link--legacy{border-color:rgba(255,122,47,.42);color:var(--orange)}
.status-link--legacy:hover{border-color:var(--orange);color:var(--white);background:var(--orange-deep)}

.status-bar__progress{
  position:absolute;
  left:0;bottom:0;
  width:100%;
  height:2px;
  background:linear-gradient(90deg,var(--green-deep),var(--green));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .12s linear;
  pointer-events:none;
}

/* ---- 14. 页头：侧轨导航 ---- */
.rail-nav{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  width:var(--rail-w);
  z-index:80;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:14px 8px 18px;
  background:linear-gradient(180deg,#111617 0%,#0B0E0F 62%,#0B0E0F 100%);
  border-right:1px solid var(--line);
  overflow-y:auto;
  overscroll-behavior:contain;
  transition:transform .28s var(--ease);
}
.rail-nav::-webkit-scrollbar{width:0}

.brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:7px;
  padding:10px 4px 16px;
  border-bottom:1px solid var(--line);
  text-align:center;
}
.brand__mark{
  width:30px;height:30px;
  border-radius:9px;
  background:
    repeating-linear-gradient(115deg,var(--green) 0 3px,rgba(43,224,138,0) 3px 9px),
    var(--raised);
  border:1px solid rgba(43,224,138,.35);
  flex:none;
}
.brand__name{
  font-size:.98rem;
  font-weight:900;
  letter-spacing:.02em;
  color:var(--white);
}
.brand__meta{
  font-family:var(--font-mono);
  font-size:.6rem;
  letter-spacing:.1em;
  color:var(--silver);
}

.rail-nav__list{
  display:flex;
  flex-direction:column;
  gap:2px;
  padding-top:6px;
}
.rail-nav__link{
  display:block;
  padding:10px 8px 10px 12px;
  border-left:2px solid transparent;
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--silver);
  font-size:.78rem;
  font-weight:600;
  line-height:1.35;
  word-break:break-word;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.rail-nav__link:hover{
  color:var(--white);
  background:rgba(244,247,248,.04);
  border-left-color:var(--line-strong);
}
.rail-nav__link:active{background:var(--raised)}
.rail-nav__link[aria-current="page"]{
  color:var(--white);
  font-weight:800;
  border-left-color:var(--green);
  background:linear-gradient(90deg,rgba(43,224,138,.16),rgba(43,224,138,0));
}

.rail-nav__foot{
  margin-top:auto;
  display:flex;
  flex-direction:column;
  gap:8px;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.rail-nav__foot-link{
  display:none;
  padding:9px 8px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--graphite);
  color:var(--ink);
  font-size:.74rem;
  font-weight:700;
  line-height:1.3;
  text-align:center;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.rail-nav__foot-link:first-child{display:block}
.rail-nav__foot-link:hover{border-color:var(--green);color:var(--green);background:rgba(43,224,138,.08)}
.rail-nav__foot-link:active{background:var(--green-deep);color:var(--white);border-color:var(--green-deep)}
.rail-nav__foot-sub{
  display:block;
  font-family:var(--font-mono);
  font-size:.6rem;
  letter-spacing:.06em;
  color:var(--silver);
  margin-top:2px;
}
.rail-nav__foot-link--legacy{border-color:rgba(255,122,47,.42);color:var(--orange)}
.rail-nav__foot-link--legacy:hover{border-color:var(--orange);background:var(--orange-deep);color:var(--white)}

/* ---- 15. 页头：移动导航按钮与遮罩 ---- */
.nav-toggle{
  display:none;
  position:fixed;
  top:11px;
  right:14px;
  z-index:130;
  align-items:center;
  gap:8px;
  padding:9px 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:rgba(20,24,26,.94);
  color:var(--white);
  font-size:.8rem;
  font-weight:700;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--green);color:var(--green)}
.nav-toggle:active{background:var(--raised)}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:background-color var(--dur) var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform var(--dur) var(--ease);
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}

.nav-scrim{
  position:fixed;
  inset:0;
  z-index:110;
  background:rgba(5,7,8,.74);
  -webkit-backdrop-filter:blur(3px);
  backdrop-filter:blur(3px);
  opacity:0;
  pointer-events:none;
  transition:opacity .24s var(--ease);
}
.nav-scrim[data-open]{opacity:1;pointer-events:auto}
body.is-nav-open{overflow:hidden}

/* ---- 16. 页脚 ---- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,104px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,#0E1214 0%,#0B0E0F 72%);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:3px;
  background:linear-gradient(90deg,var(--green),transparent 38%,transparent 66%,var(--orange));
  opacity:.7;
}
.footer-inner{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:clamp(40px,6vw,76px) var(--gutter) 30px;
}
.footer-top{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:10px 22px;
  padding-bottom:26px;
  border-bottom:1px solid var(--line);
}
.footer-brand{
  font-size:clamp(1.5rem,3.2vw,2.1rem);
  font-weight:900;
  letter-spacing:-.02em;
  color:var(--white);
  line-height:1.1;
}
.footer-brand__cn{
  font-family:var(--font-mono);
  font-size:.5em;
  letter-spacing:.1em;
  color:var(--silver);
}
.footer-tag{
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.05em;
  color:var(--silver);
}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(22px,3vw,44px);
  padding:clamp(26px,4vw,42px) 0;
}
.footer-col{min-width:0}
.footer-col__title{
  font-size:.8rem;
  font-weight:800;
  letter-spacing:.06em;
  color:var(--white);
  margin-bottom:14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
}
.footer-list{
  display:grid;
  gap:9px;
  font-size:.88rem;
  color:var(--silver);
  line-height:1.6;
}
.footer-link{
  display:inline-block;
  color:var(--ink);
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer-link:hover{color:var(--green);transform:translateX(3px)}
.footer-link:active{color:var(--green-deep)}
.footer-link--legacy{color:var(--orange)}
.footer-link--legacy:hover{color:var(--orange);text-decoration:underline;text-underline-offset:4px}
.footer-col--legacy .footer-col__title{
  color:var(--orange);
  border-bottom-color:rgba(255,122,47,.34);
}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 24px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.04em;
  color:var(--silver);
}
.footer-base__copy{color:var(--ink)}
.footer-base__icp{color:var(--silver)}
.to-top{
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:8px 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--graphite);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:.78rem;
  font-weight:700;
  letter-spacing:0;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--green);color:var(--green)}
.to-top:active{background:var(--green-deep);color:var(--white);border-color:var(--green-deep)}
.to-top__arrow{font-family:var(--font-mono);line-height:1}

/* ---- 17. 焦点态 ---- */
:focus{outline:none}
:focus-visible{
  outline:2px solid var(--green);
  outline-offset:3px;
  border-radius:6px;
}
.status-link:focus-visible,
.rail-nav__link:focus-visible,
.rail-nav__foot-link:focus-visible,
.btn:focus-visible,
.nav-toggle:focus-visible,
.to-top:focus-visible{border-radius:var(--r-pill)}

/* ---- 18. 响应式 ---- */
@media (max-width:1180px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:959px){
  :root{
    --rail-w:0px;
    --status-h:56px;
  }
  body{
    font-size:16px;
    padding-left:0;
  }
  .status-bar{
    left:0;
    height:var(--status-h);
    gap:10px;
    padding:0 76px 0 16px;
  }
  .status-brand{display:inline-flex}
  .status-chip__tail{display:none}
  .status-meta{display:none}
  .status-links{display:none}

  .nav-toggle{display:inline-flex}

  .rail-nav{
    top:0;
    width:min(84vw,320px);
    padding:22px 18px 26px;
    padding-top:74px;
    background:linear-gradient(180deg,#151A1C 0%,#0B0E0F 70%);
    border-right:1px solid var(--line-strong);
    box-shadow:0 0 0 1px rgba(11,14,15,.6),0 30px 80px -30px rgba(0,0,0,.9);
    transform:translateX(-102%);
    z-index:120;
  }
  .rail-nav[data-open]{transform:none}

  .brand{
    flex-direction:row;
    justify-content:flex-start;
    gap:12px;
    padding:0 0 18px;
    text-align:left;
  }
  .brand__mark{width:34px;height:34px}
  .brand__name{font-size:1.1rem}
  .brand__meta{font-size:.66rem}

  .rail-nav__list{gap:4px;padding-top:14px}
  .rail-nav__link{
    padding:13px 14px;
    font-size:.98rem;
    border-left-width:3px;
  }
  .rail-nav__foot-link{display:block;padding:12px 14px;font-size:.85rem}
  .rail-nav__foot-link--extra{margin-top:0}
  .rail-nav__foot-sub{display:inline;margin:0 0 0 6px;font-size:.66rem}

  .section{padding-block:clamp(32px,7vw,56px)}
  .media{border-radius:var(--r-md)}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-base{flex-direction:column;align-items:flex-start}
  .to-top{margin-left:0}
}

@media (max-width:560px){
  .status-chip{font-size:.7rem;padding:4px 10px}
  .status-brand__text{font-size:.9rem}
  .footer-brand{font-size:1.6rem}
}

/* ---- 19. 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;
  }
  .has-js [data-reveal]{opacity:1;transform:none}
  .status-chip__dot{animation:none}
  .status-bar__progress{transition:none}
  .rail-nav__link:hover,
  .footer-link:hover,
  .btn:hover,
  a.panel:hover{transform:none}
}