/* ==========================================================================
   南宫赛事官网 · 共享样式 /assets/site.css
   骨架：夜间赛场 Bento 面板 + 紧凑命令栏 + 编号章节
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --ink-900:#050B1F;
  --ink-800:#0B1533;
  --ink-700:#142247;
  --line:#1E2F5C;
  --line-soft:rgba(30,47,92,.6);
  --violet:#7C4DFF;
  --violet-dim:rgba(124,77,255,.14);
  --cyan:#3EE8FF;
  --gold:#FFC978;
  --green:#2AE39A;
  --text:#E8EEFF;
  --text-dim:#9AA9CC;
  --text-faint:#6C7BA0;

  --font-head:'Barlow Condensed','Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --font-mono:'JetBrains Mono','IBM Plex Mono',ui-monospace,'SFMono-Regular',monospace;

  --gutter:48px;
  --gap:24px;
  --gap-s:16px;
  --radius:12px;
  --page-max:1440px;
  --header-h:63px;

  --shadow-plate:0 1px 0 rgba(255,255,255,.04),0 18px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:380ms;
  --dur-fast:160ms;
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
*{margin:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html.nav-open{overflow:hidden}
body{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  color:var(--text);
  background-color:var(--ink-900);
  background-image:
    linear-gradient(to right,rgba(30,47,92,.34) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(30,47,92,.34) 1px,transparent 1px),
    radial-gradient(1100px 560px at 80% -12%,rgba(124,77,255,.20),transparent 70%);
  background-size:96px 96px,96px 96px,100% 100%;
  overflow-x:hidden;
}
img,svg,video,canvas{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;padding:0}
b,strong{font-weight:600;color:var(--text)}
hr{border:0}
figure{margin:0}

/* ---------- 3. 排版 ---------- */
h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.01em;
  color:var(--text);
}
h1{font-size:clamp(30px,4vw,52px);line-height:1.15}
h2{font-size:clamp(22px,2.6vw,34px);line-height:1.25}
h3{font-size:18px;line-height:1.4;font-weight:600}
p{max-width:72ch}
.mono{font-family:var(--font-mono);letter-spacing:.04em}
.lede{font-size:17px;color:var(--text-dim);max-width:62ch}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
#main-content{outline:none}

.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:300;
  padding:10px 16px;
  border-radius:999px;
  background:var(--violet);
  color:#fff;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  transform:translateY(-180%);
  transition:transform var(--dur-fast) var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 4. 布局容器与章节 ---------- */
.container{
  width:100%;
  max-width:var(--page-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(44px,6vw,96px)}
.section-head{display:flex;flex-direction:column;gap:8px;margin-bottom:var(--gap)}
.section-index{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--violet);
}
.section-title{font-family:var(--font-head);font-size:clamp(22px,2.6vw,34px);line-height:1.25;font-weight:700}
.stack{display:flex;flex-direction:column;gap:var(--gap-s)}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.divider{height:1px;background:var(--line);width:100%}

/* ---------- 5. Bento 网格 ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gap-s)}
.bento > .span-3,
.bento > .span-4,
.bento > .span-6,
.bento > .span-8,
.bento > .span-12{grid-column:span 12}
@media (min-width:760px){
  .bento{gap:var(--gap)}
  .bento > .span-3{grid-column:span 6}
  .bento > .span-4{grid-column:span 6}
  .bento > .span-6{grid-column:span 12}
  .bento > .span-8{grid-column:span 12}
}
@media (min-width:1080px){
  .bento > .span-3{grid-column:span 3}
  .bento > .span-4{grid-column:span 4}
  .bento > .span-6{grid-column:span 6}
  .bento > .span-8{grid-column:span 8}
}

/* ---------- 6. 卡片与数据组件 ---------- */
.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:22px;
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-plate);
  transition:border-color var(--dur-fast) var(--ease),box-shadow var(--dur-fast) var(--ease);
}
.card:hover{border-color:var(--violet);box-shadow:0 1px 0 rgba(255,255,255,.06),0 22px 46px rgba(0,0,0,.5)}
.card--focus{
  background:linear-gradient(158deg,var(--ink-700),var(--ink-800) 58%);
  border-color:rgba(124,77,255,.5);
}
.card-index{font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--violet)}
.card-title{font-family:var(--font-head);font-size:20px;font-weight:700;line-height:1.3}
.card-text{font-size:15px;color:var(--text-dim)}
.card-link{
  margin-top:auto;
  align-self:flex-start;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--cyan);
}
.card-link::after{content:"→";transition:transform var(--dur-fast) var(--ease)}
.card-link:hover::after{transform:translateX(4px)}

.stat{display:flex;flex-direction:column;gap:6px}
.stat-num{
  font-family:var(--font-mono);
  font-size:clamp(28px,3.4vw,44px);
  line-height:1;
  letter-spacing:.04em;
  color:var(--cyan);
}
.stat-num--gold{color:var(--gold)}
.stat-label{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--text-dim)}

.data-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.data-row{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:12px 0;
  border-bottom:1px solid var(--line-soft);
}
.data-key{font-size:14px;color:var(--text-dim)}
.data-value{font-family:var(--font-mono);font-size:14px;letter-spacing:.04em;color:var(--text)}
.data-value--live{color:var(--green)}

.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 13px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--ink-700);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--text-dim);
  cursor:pointer;
  transition:border-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease),background-color var(--dur-fast) var(--ease),transform var(--dur-fast) var(--ease);
}
.chip:hover{border-color:var(--violet);color:var(--text)}
.chip:active{transform:scale(.97)}
.chip[aria-pressed="true"],
.chip.is-active{
  background:rgba(255,201,120,.12);
  border-color:var(--gold);
  color:var(--gold);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border:1px solid var(--line);
  border-radius:6px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--text-dim);
}
.tag--hot{border-color:rgba(255,201,120,.55);background:rgba(255,201,120,.08);color:var(--gold)}
.tag--live{border-color:rgba(42,227,154,.5);background:rgba(42,227,154,.08);color:var(--green)}

/* ---------- 7. 图片容器（页面阶段放图占位） ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  width:100%;
  aspect-ratio:16 / 9;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:
    radial-gradient(120% 90% at 18% 0%,rgba(124,77,255,.22),transparent 62%),
    linear-gradient(180deg,var(--ink-700),var(--ink-800));
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.85) contrast(1.05) brightness(.82);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(5,11,31,0) 42%,rgba(5,11,31,.78) 100%);
  pointer-events:none;
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame--tall{aspect-ratio:3 / 4}
.media-caption{
  position:absolute;
  left:16px;
  right:16px;
  bottom:14px;
  z-index:1;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--text-dim);
}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 18px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--ink-700);
  color:var(--text);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  cursor:pointer;
  white-space:nowrap;
  transition:border-color var(--dur-fast) var(--ease),background-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease),transform var(--dur-fast) var(--ease),box-shadow var(--dur-fast) var(--ease);
}
.btn:hover{border-color:var(--violet);transform:translateY(-1px)}
.btn:active{transform:translateY(0) scale(.99)}
.btn-primary{
  background:linear-gradient(135deg,var(--gold),#FFB25C);
  border-color:transparent;
  color:#22150B;
  font-weight:600;
}
.btn-primary:hover{border-color:transparent;box-shadow:0 10px 26px rgba(255,201,120,.22)}
.btn-ghost{background:transparent;color:var(--text-dim)}
.btn-ghost:hover{background:var(--violet-dim);border-color:var(--violet);color:var(--text)}

/* ---------- 9. 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--text-faint);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li + li::before{content:"/";color:var(--line)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb [aria-current="page"]{color:var(--text-dim)}

/* ---------- 10. 正文排版块 ---------- */
.prose{display:flex;flex-direction:column;gap:14px;max-width:68ch;color:var(--text-dim)}
.prose h2,.prose h3{color:var(--text)}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(62,232,255,.35)}
.prose ul{display:flex;flex-direction:column;gap:8px}
.prose li{padding-left:16px;position:relative}
.prose li::before{content:"";position:absolute;left:0;top:.7em;width:6px;height:1px;background:var(--violet)}

/* ---------- 11. 头部命令栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(5,11,31,.9);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  width:100%;
  max-width:var(--page-max);
  min-height:62px;
  margin-inline:auto;
  padding:10px var(--gutter);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:5px 9px;
  border-radius:8px;
  background:linear-gradient(135deg,rgba(124,77,255,.95),rgba(62,232,255,.45));
  color:#070C1C;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-family:var(--font-head);font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--text)}
.brand-sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:var(--text-faint)}
.brand-footer .brand-name{font-size:22px}

.site-nav{display:flex;align-items:center;flex:1 1 auto;min-width:0}
.nav-list{display:flex;align-items:center;gap:2px;flex-wrap:nowrap;overflow:hidden}
.nav-item{flex-shrink:0}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:8px 10px;
  border-radius:8px;
  color:var(--text-dim);
  font-size:14px;
  transition:color var(--dur-fast) var(--ease),background-color var(--dur-fast) var(--ease);
}
.nav-index{font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;color:var(--text-faint);transition:color var(--dur-fast) var(--ease)}
.nav-label{white-space:nowrap}
.nav-link::after{
  content:"";
  position:absolute;
  left:10px;
  right:10px;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--violet);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--dur-fast) var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(.4)}
.nav-link[aria-current="page"]{color:var(--text)}
.nav-link[aria-current="page"] .nav-index{color:var(--violet)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-foot{display:none}
.nav-foot-status{display:none;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--text-dim)}

.header-tools{display:flex;align-items:center;gap:10px;margin-left:auto;flex-shrink:0}
.status-hint{display:none;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--text-dim)}
.status-text{white-space:nowrap}
.status-dot{
  width:7px;
  height:7px;
  flex-shrink:0;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(62,232,255,.15);
  animation:pulse 2.8s var(--ease) infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(62,232,255,.15)}
  50%{box-shadow:0 0 0 6px rgba(62,232,255,.05)}
}
.status-num{font-family:var(--font-mono);color:var(--gold)}

.command-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--ink-800);
  color:var(--text-dim);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  cursor:pointer;
  transition:border-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease),background-color var(--dur-fast) var(--ease);
}
.command-toggle:hover{border-color:var(--violet);color:var(--text)}
.command-toggle[aria-expanded="true"]{border-color:var(--violet);background:var(--violet-dim);color:var(--text)}
.command-icon{position:relative;width:12px;height:12px;border:1.5px solid currentColor;border-radius:50%}
.command-icon::after{
  content:"";
  position:absolute;
  right:-5px;
  bottom:-4px;
  width:7px;
  height:1.5px;
  background:currentColor;
  transform:rotate(45deg);
}
.command-label{white-space:nowrap}

.command-panel{
  position:absolute;
  left:0;
  right:0;
  top:100%;
  background:rgba(11,21,51,.97);
  border-bottom:1px solid var(--line);
  box-shadow:0 24px 50px rgba(0,0,0,.55);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.command-panel[hidden]{display:none}
.command-panel-inner{
  display:flex;
  flex-direction:column;
  gap:12px;
  width:100%;
  max-width:var(--page-max);
  margin-inline:auto;
  padding:18px var(--gutter) 22px;
}
.command-hint{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--text-faint);max-width:none}
.command-list{display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.command-item{
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 14px;
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--ink-800);
  font-size:14px;
  color:var(--text-dim);
  transition:border-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease),transform var(--dur-fast) var(--ease);
}
.command-item:hover{border-color:var(--violet);color:var(--text);transform:translateX(2px)}
.command-key{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--violet)}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--ink-800);
  color:var(--text-dim);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  cursor:pointer;
  transition:border-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease);
}
.nav-toggle:hover{border-color:var(--violet);color:var(--text)}
.nav-toggle[aria-expanded="true"]{border-color:var(--violet);color:var(--text)}
.nav-toggle-icon{position:relative;width:14px;height:10px}
.nav-toggle-icon::before,
.nav-toggle-icon::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:1.5px;
  background:currentColor;
  transition:transform var(--dur-fast) var(--ease);
}
.nav-toggle-icon::before{top:0}
.nav-toggle-icon::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before{transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after{transform:translateY(-4px) rotate(-45deg)}
.nav-toggle-label{white-space:nowrap}

.btn-header{display:none}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  transform:scaleX(0);
  transform-origin:left;
  background:linear-gradient(90deg,var(--violet),var(--cyan));
  pointer-events:none;
}

/* ---------- 12. 头部响应式 ---------- */
@media (min-width:900px){
  .command-toggle{display:inline-flex}
  .btn-header.btn-primary{display:inline-flex}
}
@media (min-width:1200px){
  .status-hint{display:inline-flex}
}
@media (min-width:1340px){
  .btn-header.btn-ghost{display:inline-flex}
}
@media (max-width:1079px){
  :root{--header-h:57px;--gutter:32px}
  .header-inner{min-height:56px}
  .brand-name{font-size:16px}
  .site-nav{
    position:fixed;
    left:0;
    right:0;
    top:var(--header-h);
    height:60vh;
    z-index:70;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:18px var(--gutter) 26px;
    background:rgba(11,21,51,.99);
    border-bottom:1px solid var(--line);
    box-shadow:0 30px 60px rgba(0,0,0,.6);
    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-nav[data-open]{opacity:1;visibility:visible;transform:none}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px;overflow:visible}
  .nav-link{
    justify-content:flex-start;
    padding:12px 10px;
    border-bottom:1px solid var(--line-soft);
    border-radius:0;
    font-size:16px;
  }
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{background:var(--violet-dim)}
  .nav-foot{display:flex;flex-direction:column;gap:10px;margin-top:18px}
  .nav-foot-status{display:flex}
  .nav-toggle{display:inline-flex}
}
@media (max-width:640px){
  :root{--gutter:20px;--gap:16px}
  body{background-size:64px 64px,64px 64px,100% 100%}
  .brand-mark{font-size:11px;padding:4px 8px}
  .command-panel-inner{padding:16px var(--gutter) 20px}
}

/* ---------- 13. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:auto;
  padding-block:clamp(40px,5vw,72px) 28px;
  background:linear-gradient(180deg,var(--ink-900) 0%,#03071A 62%);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  width:180px;
  height:2px;
  background:linear-gradient(90deg,var(--violet),transparent);
}
.footer-inner{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(24px,4vw,56px);
  width:100%;
  max-width:var(--page-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
@media (min-width:900px){
  .footer-inner{grid-template-columns:minmax(280px,4fr) 8fr}
}
.footer-lede{display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.footer-summary{font-size:15px;color:var(--text-dim);max-width:46ch}
.footer-actions{display:flex;flex-wrap:wrap;gap:10px}
.footer-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(148px,1fr));gap:24px}
.footer-col{display:flex;flex-direction:column;gap:12px}
.footer-col-title{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--text-faint);
}
.footer-list{display:flex;flex-direction:column;gap:8px}
.footer-link{
  display:inline-block;
  font-size:14px;
  color:var(--text-dim);
  transition:color var(--dur-fast) var(--ease),padding-left var(--dur-fast) var(--ease);
}
.footer-link:hover{color:var(--text);padding-left:4px}
.footer-meta{
  grid-column:1 / -1;
  display:flex;
  flex-direction:column;
  gap:8px;
  margin-top:8px;
  padding-top:20px;
  border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.03em;
  color:var(--text-faint);
}
.footer-contact{max-width:none}
.footer-mail{color:var(--cyan);border-bottom:1px solid rgba(62,232,255,.35)}
.footer-mail:hover{color:var(--text);border-bottom-color:var(--violet)}
.footer-legal{color:var(--text-faint)}
.footer-copy{color:var(--text-faint)}
@media (min-width:900px){
  .footer-meta{
    flex-direction:row;
    flex-wrap:wrap;
    align-items:baseline;
    justify-content:space-between;
    gap:12px 24px;
  }
}

/* ---------- 14. 滚动显现 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
  transition-delay:var(--reveal-delay,0ms);
}
.js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 15. 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;
    transition-delay:0ms !important;
  }
  .js [data-reveal]{opacity:1 !important;transform:none !important}
  .status-dot{animation:none;box-shadow:0 0 0 3px rgba(62,232,255,.15)}
  .scroll-progress{transition:none}
}