/* ============================================================
   ABG游艺 · happy-abg.com.cn · 共享样式 /assets/site.css
   游乐场霓虹 × 像素游戏厅
   ============================================================ */

:root{
  --orange:#FF6A1A;
  --purple:#6C2BD9;
  --lime:#B7F53A;
  --yellow:#FFD84D;
  --cyan:#17C6C6;
  --pink:#FF8FB1;
  --neon:#14102B;
  --mist:#F5F2FF;
  --ink:#241C3A;
  --white:#FFFFFF;

  --line:rgba(36,28,58,.10);
  --line-strong:rgba(36,28,58,.18);

  --font-display:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-body:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --r-card:18px 6px 18px 6px;
  --r-btn:14px 4px 14px 4px;
  --r-chip:10px 3px 10px 3px;

  --ease:cubic-bezier(.22,.68,.36,1);
  --shell:1240px;
  --gutter:20px;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background:
    radial-gradient(900px 520px at 102% -6%, rgba(108,43,217,.10), transparent 62%),
    radial-gradient(760px 460px at -8% 10%, rgba(255,106,26,.10), transparent 60%),
    var(--white);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img,svg,video{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
p,h1,h2,h3,h4{margin:0;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
::selection{background:var(--yellow);color:var(--ink);}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px;border-radius:6px;}

.skip-link{
  position:absolute;left:12px;top:-70px;z-index:200;
  padding:11px 18px;
  background:var(--neon);color:#fff;
  border-radius:0 0 14px 4px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:0;}

/* ---------- 排版 ---------- */
h1,h2,h3,.display{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.01em;
  line-height:1.18;
  text-wrap:balance;
}
h1{font-size:clamp(34px,6vw,68px);}
h2{font-size:clamp(26px,3.6vw,42px);}
h3{font-size:clamp(20px,2.2vw,28px);}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--purple);
}
.kicker::before{
  content:"";width:18px;height:3px;background:var(--orange);
  transform:skewX(-24deg);border-radius:2px;
}
.prose{max-width:38em;font-size:17px;line-height:1.8;color:var(--ink);}
.prose p + p{margin-top:1.2em;}
.prose h2{margin:1.6em 0 .6em;font-size:clamp(22px,2.6vw,30px);}
.prose h3{margin:1.4em 0 .5em;}
.prose ul,.prose ol{margin:1em 0;padding-left:0;display:grid;gap:.55em;}
.prose li{position:relative;padding-left:22px;}
.prose li::before{
  content:"";position:absolute;left:0;top:.66em;
  width:10px;height:10px;background:var(--lime);
  transform:rotate(45deg);border-radius:2px;
}
.prose strong{color:var(--purple);}
.site-footer .prose,.section--dark .prose{color:rgba(255,255,255,.86);}

/* ---------- 骨架 ---------- */
.wrap{width:100%;max-width:var(--shell);margin:0 auto;padding:0 var(--gutter);}
.wrap--narrow{max-width:860px;}
.section{padding:clamp(48px,7vw,96px) 0;}
.section--mist{background:linear-gradient(180deg,#FBF9FF,var(--mist));}
.section--dark{
  background:linear-gradient(158deg,#14102B 0%,#221550 54%,#3A1B7A 100%);
  color:#fff;
}
.divider-slash{
  height:8px;
  background:repeating-linear-gradient(115deg,
    var(--orange) 0 20px, transparent 20px 32px,
    var(--purple) 32px 52px, transparent 52px 66px,
    var(--lime) 66px 78px, transparent 78px 96px);
  opacity:.6;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;
  font-weight:700;font-size:15px;letter-spacing:.02em;line-height:1.2;
  border:2px solid transparent;
  border-radius:var(--r-btn);
  transition:transform .12s var(--ease),box-shadow .12s var(--ease),background-color .12s var(--ease),color .12s var(--ease);
}
.btn:hover{transform:translateY(-2px);}
.btn-primary{
  background:linear-gradient(122deg,var(--orange),#FF8A3D);
  color:#fff;
  box-shadow:0 12px 24px -12px rgba(255,106,26,.9);
}
.btn-primary:hover{box-shadow:0 18px 30px -12px rgba(255,106,26,.95);}
.btn-ghost{background:#fff;color:var(--purple);border-color:rgba(108,43,217,.34);}
.btn-ghost:hover{background:var(--mist);}
.btn-lime{background:var(--lime);color:#1C2606;box-shadow:0 12px 24px -14px rgba(183,245,58,.9);}
.section--dark .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4);}
.section--dark .btn-ghost:hover{background:rgba(255,255,255,.12);}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--7-5{grid-template-columns:7fr 5fr;}
.grid--8-4{grid-template-columns:8fr 4fr;}
.grid--5-7{grid-template-columns:5fr 7fr;}

/* ---------- 面板 / 卡片 ---------- */
.panel{
  position:relative;
  background:#fff;
  border:2px solid var(--line);
  border-radius:var(--r-card);
  padding:clamp(18px,2.4vw,26px);
  box-shadow:0 20px 42px -30px rgba(36,28,58,.6);
  transition:transform .12s var(--ease),box-shadow .12s var(--ease),border-color .12s var(--ease);
}
.panel:hover{
  transform:translateY(-4px);
  border-color:rgba(255,106,26,.4);
  box-shadow:0 30px 52px -30px rgba(36,28,58,.55);
}
.panel::after{
  content:"";position:absolute;top:-2px;right:-2px;
  width:26px;height:26px;
  background:linear-gradient(135deg,var(--orange),var(--purple));
  clip-path:polygon(100% 0,0 0,100% 100%);
  border-top-right-radius:7px;
  pointer-events:none;
}
.section--dark .panel{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.16);}
.panel-head{display:flex;align-items:baseline;gap:10px;margin-bottom:12px;flex-wrap:wrap;}
.panel-title{font-family:var(--font-display);font-weight:900;font-size:clamp(19px,2.2vw,25px);line-height:1.3;}
.index-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  background:var(--yellow);color:var(--ink);
  border-radius:var(--r-chip);
}
.index-tag--cyan{background:var(--cyan);color:#08201F;}
.index-tag--lime{background:var(--lime);color:#1C2606;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  width:100%;max-width:var(--shell);margin:0 auto;
  padding:24px var(--gutter) 0;
}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb-item{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:rgba(36,28,58,.56);
}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--orange);font-weight:700;}
.breadcrumb-item a{color:var(--purple);transition:color .12s var(--ease);}
.breadcrumb-item a:hover{color:var(--orange);}
.breadcrumb-item[aria-current="page"]{color:var(--ink);}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;overflow:hidden;
  border-radius:20px 6px 20px 6px;
  background:linear-gradient(140deg,var(--mist) 0%,#FFEFE2 55%,rgba(183,245,58,.35) 100%);
  aspect-ratio:16 / 10;
  box-shadow:0 24px 48px -32px rgba(36,28,58,.7);
}
.media-frame > img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s var(--ease);
}
.media-frame:hover > img{transform:scale(1.04);}
.media-frame::after{
  content:"";position:absolute;top:0;right:0;
  width:52px;height:52px;
  background:linear-gradient(135deg,var(--orange),rgba(108,43,217,.9));
  clip-path:polygon(100% 0,0 0,100% 100%);
  pointer-events:none;
}
.media-frame--wide{aspect-ratio:21 / 9;}
.media-frame--tall{aspect-ratio:4 / 5;}

/* ---------- 可展开内容组 ---------- */
.expand-group{display:grid;gap:12px;}
.expand-item{
  background:#fff;
  border:2px solid var(--line);
  border-radius:16px 4px 16px 4px;
  overflow:hidden;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.expand-item[data-open="true"]{
  border-color:rgba(108,43,217,.45);
  box-shadow:0 18px 38px -30px rgba(108,43,217,.9);
}
.expand-trigger{
  width:100%;display:flex;align-items:center;gap:12px;
  padding:16px 18px;text-align:left;
  font-weight:700;font-size:16px;line-height:1.5;
}
.expand-trigger:hover{background:var(--mist);}
.expand-icon{
  margin-left:auto;flex:0 0 auto;
  width:22px;height:22px;display:grid;place-items:center;
  font-family:var(--font-mono);font-size:15px;font-weight:700;
  color:#fff;background:var(--purple);
  border-radius:8px 2px 8px 2px;
  transition:transform .2s var(--ease),background-color .2s var(--ease);
}
.expand-item[data-open="true"] .expand-icon{transform:rotate(45deg);background:var(--orange);}
.expand-panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows .32s var(--ease);}
.expand-panel > .expand-inner{overflow:hidden;}
.expand-panel > .expand-inner > *{padding:0 18px 18px;margin:0;}
.expand-item[data-open="true"] .expand-panel{grid-template-rows:1fr;}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;transform:translateY(16px);
  transition:opacity .32s var(--ease),transform .32s var(--ease);
}
.reveal.is-visible{opacity:1;transform:none;}
.reveal--wipe{
  opacity:1;transform:none;
  clip-path:inset(0 100% 0 0);
  transition:clip-path .5s var(--ease),opacity .32s var(--ease);
}
.reveal--wipe.is-visible{clip-path:inset(0 0 0 0);}

/* ============================================================
   头部 · 紧凑命令栏
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.9);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:2px solid rgba(36,28,58,.08);
  transition:box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.site-header[data-scrolled="true"]{
  background:rgba(255,255,255,.97);
  box-shadow:0 16px 32px -24px rgba(36,28,58,.85);
}
.header-rail{
  position:relative;z-index:100;
  width:100%;max-width:var(--shell);margin:0 auto;
  padding:12px var(--gutter);
  display:flex;align-items:center;gap:16px;
  transition:padding .2s var(--ease);
}
.site-header[data-scrolled="true"] .header-rail{padding-top:7px;padding-bottom:7px;}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  display:grid;place-items:center;
  width:42px;height:42px;
  font-family:var(--font-display);font-weight:900;font-size:15px;letter-spacing:.01em;
  color:#fff;
  background:linear-gradient(135deg,var(--orange),var(--purple) 94%);
  border-radius:14px 4px 14px 4px;
  box-shadow:0 10px 20px -12px rgba(108,43,217,.95);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-family:var(--font-display);font-weight:900;font-size:17px;color:var(--ink);}
.brand-line{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;color:var(--purple);}

.nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-list{display:flex;align-items:center;gap:2px;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:6px;
  padding:9px 12px;
  font-size:15px;font-weight:600;color:var(--ink);
  border-radius:12px 4px 12px 4px;
  transition:background-color .12s var(--ease),color .12s var(--ease),transform .12s var(--ease);
}
.nav-link:hover{background:var(--mist);color:var(--purple);transform:translateY(-1px);}
.nav-index{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:var(--purple);opacity:.66;}
.nav-link[aria-current="page"]{color:var(--orange);background:rgba(255,106,26,.1);}
.nav-link[aria-current="page"] .nav-index{color:var(--orange);opacity:1;}
.nav-link[aria-current="page"]::before{
  content:"";position:absolute;top:7px;right:7px;
  width:6px;height:6px;border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 0 3px rgba(255,106,26,.18);
}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:3px;
  background:var(--orange);
  transform:skewX(-24deg);border-radius:2px;
}
.nav-foot{display:none;}
.nav-note{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:rgba(255,255,255,.72);
}
.nav-cta{width:100%;justify-content:center;}

.header-actions{display:flex;align-items:center;gap:10px;margin-left:14px;}
.mail-chip{
  display:flex;flex-direction:column;line-height:1.25;
  padding:5px 10px 5px 12px;
  border-left:3px solid var(--lime);
  transition:border-color .12s var(--ease);
}
.mail-chip:hover{border-color:var(--orange);}
.mail-chip-label{font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;color:var(--purple);}
.mail-chip-value{font-family:var(--font-mono);font-size:12px;color:var(--ink);}
.mail-chip:hover .mail-chip-value{color:var(--orange);}
.header-cta{padding:10px 16px;font-size:14px;}

.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:9px 14px;
  background:var(--ink);color:#fff;
  font-weight:700;font-size:14px;
  border-radius:var(--r-btn);
}
.nav-toggle-bars{display:grid;gap:3px;width:16px;}
.nav-toggle-bars span{
  display:block;height:2px;background:var(--lime);border-radius:2px;
  transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}
.nav-toggle-text{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;}

.header-status{
  display:flex;align-items:center;gap:8px;
  max-width:var(--shell);margin:0 auto;
  padding:0 var(--gutter) 8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:rgba(36,28,58,.6);
  overflow:hidden;
  transition:opacity .2s var(--ease),max-height .2s var(--ease),padding .2s var(--ease);
}
.site-header[data-scrolled="true"] .header-status{opacity:0;max-height:0;padding-top:0;padding-bottom:0;}
.status-dot{
  flex:0 0 auto;width:7px;height:7px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(23,198,198,.2);
  animation:abg-pulse 2.4s var(--ease) infinite;
}
@keyframes abg-pulse{
  0%,100%{transform:scale(1);opacity:1;}
  50%{transform:scale(1.3);opacity:.7;}
}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-2px;height:3px;
  overflow:hidden;pointer-events:none;
}
.scroll-progress > span{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--orange),var(--yellow),var(--lime),var(--cyan));
  transition:width .1s linear;
}

/* ============================================================
   页脚 · 深霓虹
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,110px);
  overflow:hidden;
  color:#fff;
  background:linear-gradient(168deg,#14102B 0%,#1C1240 48%,#2E1660 100%);
}
.footer-glow{
  position:absolute;left:-10%;right:-10%;top:-32%;height:72%;
  pointer-events:none;
  background:
    radial-gradient(420px 240px at 14% 34%, rgba(255,106,26,.48), transparent 70%),
    radial-gradient(400px 250px at 76% 14%, rgba(108,43,217,.6), transparent 72%),
    radial-gradient(300px 190px at 52% 62%, rgba(183,245,58,.22), transparent 70%);
  filter:blur(8px);
}
.footer-inner{
  position:relative;z-index:1;
  max-width:var(--shell);margin:0 auto;
  padding:clamp(44px,6vw,76px) var(--gutter) 0;
  display:grid;grid-template-columns:1.05fr 2fr;
  gap:clamp(26px,4vw,60px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:14px;}
.site-footer .brand-name{color:#fff;}
.site-footer .brand-line{color:var(--lime);}
.footer-tagline{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(22px,3vw,32px);line-height:1.24;letter-spacing:-.01em;
  color:#fff;
}
.footer-note{max-width:32em;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);}
.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,3vw,36px);}
.footer-col-title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11.5px;font-weight:600;letter-spacing:.16em;
  color:var(--lime);
}
.footer-list{display:grid;gap:10px;}
.footer-list a{
  display:inline-block;
  padding-bottom:2px;
  font-size:15px;color:rgba(255,255,255,.84);
  border-bottom:1px solid transparent;
  transition:color .12s var(--ease),border-color .12s var(--ease),transform .12s var(--ease);
}
.footer-list a:hover{color:var(--yellow);border-color:var(--yellow);transform:translateX(3px);}

.footer-base{
  position:relative;z-index:1;
  max-width:var(--shell);margin:0 auto;
  padding:0 var(--gutter) clamp(28px,4vw,46px);
}
.footer-contact{
  margin-top:clamp(30px,4vw,52px);
  padding:18px 20px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.16);
  border-left:5px solid var(--orange);
  border-radius:0 16px 16px 0;
  font-family:var(--font-mono);font-size:12px;line-height:2;letter-spacing:.02em;
  color:rgba(255,255,255,.78);
}
.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;
  margin-top:22px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:rgba(255,255,255,.6);
}
.footer-icp{white-space:nowrap;}
.to-top{
  margin-left:auto;
  padding:10px 16px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.24);
  border-radius:var(--r-btn);
  color:#fff;font-weight:700;font-size:12px;letter-spacing:.06em;
  transition:background-color .14s var(--ease),color .14s var(--ease),transform .14s var(--ease),box-shadow .14s var(--ease);
}
.to-top:hover{transform:translateY(-2px);background:rgba(255,255,255,.18);}
.to-top[data-visible="true"]{
  background:var(--lime);color:#1C2606;border-color:transparent;
  box-shadow:0 14px 26px -14px rgba(183,245,58,.95);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1240px){
  .mail-chip{display:none;}
}
@media (max-width:1100px){
  .nav-link{padding:9px 10px;font-size:14.5px;}
  .header-cta{display:none;}
}
@media (max-width:1024px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid--7-5,.grid--8-4,.grid--5-7{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr;}
}
@media (max-width:1023px){
  .brand-line{display:none;}
  .nav-toggle{display:inline-flex;position:relative;z-index:110;}
  .header-status{display:none;}

  .nav{
    position:fixed;top:0;left:0;right:0;bottom:0;z-index:90;
    display:flex;flex-direction:column;gap:4px;
    margin:0;padding:96px 22px 40px;
    overflow-y:auto;
    background:linear-gradient(158deg,#14102B 0%,#2A1758 55%,#6C2BD9 100%);
    color:#fff;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
  }
  .nav[data-open="true"]{opacity:1;visibility:visible;transform:none;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-item{border-bottom:1px solid rgba(255,255,255,.13);}
  .nav-link{
    width:100%;padding:16px 6px;
    font-size:19px;color:#fff;border-radius:0;
  }
  .nav-link:hover{background:rgba(255,255,255,.08);color:#fff;transform:none;}
  .nav-index{color:var(--lime);opacity:.95;font-size:11px;}
  .nav-link[aria-current="page"]{background:rgba(255,216,77,.12);color:var(--yellow);}
  .nav-link[aria-current="page"] .nav-index{color:var(--yellow);}
  .nav-link[aria-current="page"]::after{left:6px;right:auto;width:56px;bottom:9px;background:var(--yellow);}
  .nav-link[aria-current="page"]::before{right:auto;left:2px;top:50%;margin-top:-3px;}
  .nav-foot{display:flex;flex-direction:column;gap:14px;margin-top:24px;}
  .nav-cta{background:var(--lime);color:#1C2606;border-color:transparent;}
  .nav-cta:hover{background:#C6FF57;}
}
@media (max-width:900px){
  .grid--2{grid-template-columns:1fr;}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:640px){
  body{font-size:16px;}
  :root{--gutter:16px;}
  .grid--3{grid-template-columns:1fr;}
  .footer-cols{grid-template-columns:1fr;}
  .footer-legal{flex-direction:column;align-items:flex-start;}
  .to-top{margin-left:0;}
  .brand-mark{width:38px;height:38px;font-size:14px;}
  h1{font-size:clamp(30px,9vw,40px);}
}

/* ---------- 无障碍与动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none;}
  .reveal--wipe{clip-path:none;}
  .status-dot{animation:none;}
  .panel:hover,.btn:hover,.to-top:hover{transform:none;}
}