:root{
  --ink:#05121E;
  --panel:#0B2334;
  --panel-2:#143A50;
  --line:#20566F;
  --cyan:#22E3CE;
  --cyan-soft:#8BF4E7;
  --coral:#FF6A45;
  --coral-soft:#FFB49B;
  --text:#E6F1F6;
  --muted:#8DA9B8;
  --font-display:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Sarasa Mono SC","SFMono-Regular",ui-monospace,Menlo,Consolas,"Courier New",monospace;
  --gutter:clamp(16px,4vw,40px);
  --max:1200px;
  --radius-organic:22px 4px 22px 4px;
  --dur:220ms;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
html.is-nav-open{overflow:hidden;}
body,h1,h2,h3,h4,h5,p,ul,ol,dl,dd,figure,blockquote,fieldset{margin:0;padding:0;}
ul,ol{list-style:none;}
img,svg,video,canvas{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
table{border-collapse:collapse;width:100%;}

body{
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-body);
  font-size:1rem;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:clip;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(58vw 58vw at 6% -4%, rgba(34,227,206,.13), transparent 62%),
    radial-gradient(52vw 52vw at 98% 8%, rgba(255,106,69,.11), transparent 60%),
    repeating-linear-gradient(90deg, rgba(32,86,111,.15) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(32,86,111,.09) 0 1px, transparent 1px 96px);
}

h1,h2,h3,h4,h5{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.16;
  color:#F2FAFD;
}
p{max-width:none;}

:focus-visible{outline:2px solid var(--cyan-soft);outline-offset:3px;}
::selection{background:rgba(34,227,206,.32);color:#fff;}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.06em;}
.visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

.container{
  width:100%;
  max-width:var(--max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
#main-content{display:block;scroll-margin-top:140px;}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:.7rem;
  left:.7rem;
  z-index:300;
  padding:.62rem 1rem;
  background:var(--cyan);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.12em;
  border-radius:3px 12px 3px 12px;
  transform:translateY(-180%);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0);outline:2px solid var(--coral);outline-offset:3px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.62rem 1.15rem;
  font-family:var(--font-mono);
  font-size:.8rem;
  letter-spacing:.14em;
  line-height:1.3;
  color:var(--text);
  background:transparent;
  border:1px solid var(--line);
  border-radius:3px 14px 3px 14px;
  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(--coral);
  border-color:var(--coral);
  color:#1A0700;
  font-weight:700;
}
.btn--primary:hover,.btn--primary:focus-visible{background:var(--coral-soft);border-color:var(--coral-soft);transform:translateY(-1px);}
.btn--ghost{
  color:var(--cyan-soft);
  border-color:rgba(34,227,206,.5);
}
.btn--ghost:hover,.btn--ghost:focus-visible{background:rgba(34,227,206,.12);color:#EAFEFA;transform:translateY(-1px);}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg, rgba(5,18,30,.985), rgba(5,18,30,.92));
  border-bottom:1px solid rgba(32,86,111,.6);
  backdrop-filter:blur(10px);
}
.header-strip{
  position:relative;
  background:
    linear-gradient(112deg, rgba(34,227,206,.12) 0%, transparent 40%, transparent 64%, rgba(255,106,69,.12) 100%),
    var(--panel);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  min-height:66px;
  padding-block:.65rem;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:.7rem;
  padding:.2rem 0;
  flex:none;
}
.brand-mark{
  position:relative;
  width:34px;
  height:34px;
  flex:none;
  border-radius:52% 48% 50% 8px;
  background:linear-gradient(140deg, var(--cyan) 0%, rgba(34,227,206,.18) 56%, var(--coral) 100%);
  box-shadow:0 0 0 1px rgba(34,227,206,.4), 0 0 18px rgba(34,227,206,.28);
}
.brand-mark-core{
  position:absolute;
  inset:0;
  margin:auto;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--ink);
  box-shadow:inset 0 0 0 2px rgba(5,18,30,.85);
}
.brand-text{display:flex;flex-direction:column;gap:.15rem;}
.brand-name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.06rem;
  letter-spacing:.12em;
  line-height:1.15;
  color:#FFFFFF;
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:.6rem;
  letter-spacing:.2em;
  line-height:1.3;
  color:var(--muted);
  text-transform:uppercase;
}
.header-status{
  display:flex;
  align-items:center;
  gap:1.3rem;
  margin-inline:auto;
  padding-left:1.4rem;
}
.header-status::before{
  content:"";
  width:7px;
  height:7px;
  border-radius:50%;
  flex:none;
  background:var(--coral);
  box-shadow:0 0 0 3px rgba(255,106,69,.18);
  animation:ly-pulse 2.6s var(--ease) infinite;
}
@keyframes ly-pulse{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:.55;transform:scale(.82);}
}
.status-item{display:inline-flex;align-items:baseline;gap:.45rem;}
.status-key{
  font-family:var(--font-mono);
  font-size:.58rem;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--muted);
  padding-left:.55rem;
  border-left:1px solid var(--line);
}
.status-val{font-size:.78rem;color:var(--cyan-soft);letter-spacing:.04em;}

.header-actions{display:flex;align-items:center;gap:.55rem;flex:none;}
.nav-toggle{
  display:none;
  align-items:center;
  gap:.5rem;
  padding:.6rem .78rem;
  border:1px solid rgba(34,227,206,.45);
  border-radius:3px 14px 3px 14px;
  color:var(--cyan-soft);
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.16em;
}
.nav-toggle-box{display:grid;gap:3px;width:16px;}
.nav-toggle-bar{display:block;height:2px;background:currentColor;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);}
.nav-toggle-text{font-family:var(--font-mono);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

.scroll-meter{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:rgba(32,86,111,.55);
  overflow:hidden;
  pointer-events:none;
}
.scroll-meter-fill{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),var(--cyan-soft) 55%,var(--coral));
}

/* ---------- 导航 ---------- */
.site-nav{
  background:rgba(11,35,52,.72);
  border-top:1px solid rgba(32,86,111,.5);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
}
.nav-list{display:flex;align-items:stretch;flex-wrap:wrap;gap:.1rem;}
.nav-item{display:flex;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:.45rem;
  padding:.85rem 1.05rem;
  font-size:.94rem;
  letter-spacing:.06em;
  color:var(--muted);
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:1.05rem;
  right:1.05rem;
  bottom:.42rem;
  height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--cyan-soft));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.nav-link:hover,.nav-link:focus-visible{
  color:var(--text);
  background:rgba(34,227,206,.08);
}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1);}
.nav-link[aria-current="page"]{
  color:var(--cyan-soft);
  background:linear-gradient(180deg, rgba(34,227,206,.16), rgba(34,227,206,0));
}
.nav-link[aria-current="page"]::after{transform:scaleX(1);}
.nav-link[aria-current="page"] .nav-index{color:var(--coral);}
.nav-index{
  font-size:.6rem;
  letter-spacing:.16em;
  color:rgba(141,169,184,.75);
  transition:color var(--dur) var(--ease);
}
.nav-label{display:inline-block;}
.nav-note{
  font-size:.62rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--muted);
  white-space:nowrap;
}

/* ---------- 通用章节组件 ---------- */
.section-head{display:grid;gap:.55rem;margin-bottom:clamp(20px,3vw,36px);}
.section-kicker{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--cyan);
}
.section-kicker::before{content:"";width:24px;height:1px;background:var(--coral);}
.section-index{
  font-family:var(--font-mono);
  font-size:clamp(1.6rem,3vw,2.4rem);
  line-height:1;
  letter-spacing:.02em;
  color:rgba(32,86,111,.95);
}
.section-title{font-size:clamp(1.7rem,3.6vw,2.55rem);}
.section-meta{
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.16em;
  color:var(--muted);
}

.card{
  position:relative;
  background:var(--panel);
  border:1px solid rgba(32,86,111,.6);
  border-radius:var(--radius-organic);
  padding:clamp(16px,2.4vw,28px);
  overflow:hidden;
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.card--accent{
  border-color:rgba(255,106,69,.6);
  box-shadow:inset 0 0 0 1px rgba(255,106,69,.14), 0 18px 44px -28px rgba(255,106,69,.6);
}
.card--flat{background:var(--panel-2);border-radius:6px;}

.tag{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  padding:.16rem .5rem;
  font-family:var(--font-mono);
  font-size:.62rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--cyan-soft);
  border:1px solid rgba(34,227,206,.45);
  border-radius:2px;
  white-space:nowrap;
}
.tag--cyan{color:var(--cyan-soft);border-color:rgba(34,227,206,.45);}
.tag--coral{color:var(--coral-soft);border-color:rgba(255,106,69,.6);}

.data-label{
  font-family:var(--font-mono);
  font-size:.62rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--muted);
}

/* ---------- 图片容器 ---------- */
.img-frame{
  position:relative;
  display:block;
  overflow:hidden;
  background:linear-gradient(150deg,var(--panel-2),var(--panel) 70%);
  border:1px solid rgba(32,86,111,.65);
  border-radius:var(--radius-organic);
  margin:0;
}
.img-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
  filter:saturate(1.06) contrast(1.03);
}
.img-frame figcaption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:.7rem .9rem .6rem;
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.12em;
  color:var(--text);
  background:linear-gradient(0deg, rgba(5,18,30,.94), rgba(5,18,30,0));
}
.img-frame--wide{aspect-ratio:16/9;}
.img-frame--tall{aspect-ratio:3/4;}
.img-frame--square{aspect-ratio:1/1;}
.img-frame--blob{border-radius:44% 6% 44% 6%;}

/* ---------- 面包屑 ---------- */
.breadcrumb{margin-bottom:1.25rem;}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;}
.breadcrumb-item{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.14em;
  color:var(--muted);
}
.breadcrumb-item+.breadcrumb-item::before{content:"/";color:var(--line);}
.breadcrumb-link{color:var(--muted);transition:color var(--dur) var(--ease);}
.breadcrumb-link:hover,.breadcrumb-link:focus-visible{color:var(--cyan-soft);}
.breadcrumb-item [aria-current="page"]{color:var(--cyan);}

/* ---------- 网格与正文 ---------- */
.grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2.4vw,24px);
}
.span-4{grid-column:span 4;}
.span-6{grid-column:span 6;}
.span-8{grid-column:span 8;}
.span-12{grid-column:span 12;}

.prose{
  max-width:38em;
  font-size:1.02rem;
  line-height:1.8;
  color:var(--text);
}
.prose p+p{margin-top:1em;}
.prose strong{color:var(--cyan-soft);font-weight:700;}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(34,227,206,.4);}

/* ---------- 滚动显现 ---------- */
[data-reveal]{
  transition:opacity .55s var(--ease),transform .55s var(--ease);
  transition-delay:calc(var(--reveal-i,0) * 80ms);
}
[data-reveal].is-reveal-pending{opacity:0;transform:translateY(16px);}
[data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  overflow:hidden;
  margin-top:clamp(48px,8vw,96px);
  padding-block:clamp(40px,6vw,72px) 26px;
  background:linear-gradient(180deg,var(--ink) 0%, #030B13 100%);
  border-top:1px solid rgba(32,86,111,.65);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:2px;
  background:linear-gradient(90deg,var(--coral) 0%,rgba(255,106,69,0) 42%,rgba(34,227,206,0) 60%,var(--cyan) 100%);
  opacity:.8;
}
.footer-glow{
  position:absolute;
  top:-42%;
  right:-14%;
  width:min(70vw,640px);
  height:min(70vw,640px);
  border-radius:50%;
  pointer-events:none;
  background:radial-gradient(circle, rgba(34,227,206,.18), rgba(34,227,206,0) 66%);
  filter:blur(2px);
}
.footer-inner{position:relative;z-index:1;}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.25fr;
  gap:clamp(24px,4vw,48px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;}
.brand--footer{align-items:center;}
.brand--footer .brand-mark{width:38px;height:38px;}
.brand--footer .brand-name{font-size:1.16rem;letter-spacing:.14em;}
.brand--footer .brand-sub{letter-spacing:.14em;}
.footer-blurb{
  margin-top:1rem;
  max-width:30ch;
  font-size:.9rem;
  line-height:1.75;
  color:var(--muted);
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  margin-top:1.3rem;
  padding:.5rem .85rem;
  color:var(--cyan-soft);
  font-size:.72rem;
  letter-spacing:.16em;
  border:1px solid rgba(34,227,206,.45);
  border-radius:3px 14px 3px 14px;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.to-top:hover,.to-top:focus-visible{background:rgba(34,227,206,.14);border-color:var(--cyan);transform:translateY(-2px);}
.to-top-arrow{font-size:.92rem;line-height:1;}
.to-top-text{font-family:var(--font-mono);}

.footer-col{min-width:0;}
.footer-col--contact{min-width:0;}
.footer-col-title{
  display:flex;
  align-items:center;
  gap:.55rem;
  margin-bottom:.9rem;
  font-family:var(--font-mono);
  font-size:.64rem;
  font-weight:400;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-col-title::before{content:"";width:14px;height:1px;background:var(--coral);flex:none;}
.footer-col-title--second{margin-top:1.9rem;}
.footer-nav{display:grid;gap:.1rem;}
.footer-link{
  display:inline-block;
  padding:.24rem 0;
  font-size:.9rem;
  letter-spacing:.02em;
  color:var(--text);
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer-link:hover,.footer-link:focus-visible{color:var(--cyan-soft);transform:translateX(3px);}
.footer-link--inline{padding:0;font-size:.76rem;color:var(--muted);}
.footer-link--inline:hover,.footer-link--inline:focus-visible{color:var(--cyan-soft);transform:none;}

.contact-list{display:grid;gap:.75rem;}
.contact-row{display:grid;grid-template-columns:auto 1fr;gap:.7rem;align-items:start;font-size:.86rem;}
.contact-key{
  font-size:.58rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--muted);
  border:1px solid rgba(32,86,111,.9);
  border-radius:2px;
  padding:.06rem .34rem;
  line-height:1.7;
  white-space:nowrap;
}
.contact-val{color:var(--text);line-height:1.7;word-break:break-word;min-width:0;}
.contact-note{
  margin-top:1rem;
  padding-left:.75rem;
  border-left:2px solid rgba(255,106,69,.65);
  font-size:.76rem;
  line-height:1.75;
  color:var(--muted);
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.6rem 1.2rem;
  margin-top:clamp(32px,5vw,56px);
  padding-top:1.15rem;
  border-top:1px dashed rgba(32,86,111,.8);
}
.footer-signoff{
  font-size:.72rem;
  letter-spacing:.14em;
  color:var(--muted);
}
.footer-legal{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;margin-left:auto;}
.footer-dot{color:var(--line);}
.footer-icp{font-size:.72rem;letter-spacing:.1em;color:var(--muted);}
.footer-copy{
  margin-top:.9rem;
  font-size:.64rem;
  letter-spacing:.18em;
  color:rgba(141,169,184,.72);
}

/* ---------- 平板 ---------- */
@media (max-width:1080px){
  .header-status{display:none;}
  .footer-top{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}

/* ---------- 移动端 ---------- */
@media (max-width:900px){
  body{padding-bottom:calc(74px + env(safe-area-inset-bottom));}
  .header-inner{min-height:60px;}
  .nav-toggle{display:inline-flex;}
  .header-actions{
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    z-index:120;
    display:grid;
    grid-template-columns:1fr 1fr auto;
    align-items:center;
    gap:.5rem;
    padding:.55rem var(--gutter) calc(.55rem + env(safe-area-inset-bottom));
    background:linear-gradient(180deg, rgba(11,35,52,.97), rgba(5,18,30,.995));
    border-top:1px solid var(--line);
    backdrop-filter:blur(12px);
  }
  .header-actions .btn{width:100%;padding:.72rem .4rem;font-size:.74rem;letter-spacing:.1em;}
  .nav-toggle{padding:.62rem .7rem;}

  .site-nav{
    position:fixed;
    inset:0;
    z-index:110;
    display:flex;
    align-items:stretch;
    border-top:0;
    background:
      radial-gradient(90vw 60vw at 92% -6%, rgba(255,106,69,.16), transparent 62%),
      radial-gradient(90vw 70vw at -6% 104%, rgba(34,227,206,.16), transparent 62%),
      var(--ink);
    transform:translateY(-101%);
    visibility:hidden;
    overflow-y:auto;
    transition:transform .34s var(--ease), visibility 0s linear .34s;
  }
  .site-header[data-open] .site-nav{
    transform:translateY(0);
    visibility:visible;
    transition:transform .34s var(--ease), visibility 0s linear 0s;
  }
  .nav-inner{
    flex:1;
    flex-direction:column;
    align-items:stretch;
    justify-content:center;
    gap:1rem;
    min-height:100vh;
    min-height:100dvh;
    padding-block:5.5rem 7.5rem;
  }
  .nav-list{flex-direction:column;gap:0;width:100%;}
  .nav-item{border-bottom:1px solid rgba(32,86,111,.45);}
  .nav-item:first-child{border-top:1px solid rgba(32,86,111,.45);}
  .nav-link{
    width:100%;
    padding:1.05rem .2rem;
    font-size:1.24rem;
    letter-spacing:.08em;
    color:var(--text);
  }
  .nav-link::after{display:none;}
  .nav-link[aria-current="page"]{
    color:var(--cyan);
    padding-left:.85rem;
    border-left:3px solid var(--cyan);
    background:linear-gradient(90deg, rgba(34,227,206,.14), rgba(34,227,206,0));
  }
  .nav-index{font-size:.7rem;}
  .nav-note{display:none;}

  .footer-top{grid-template-columns:1fr;}
  .footer-brand{grid-column:auto;}
  .site-footer{padding-bottom:calc(96px + env(safe-area-inset-bottom));}
  .footer-legal{margin-left:0;}
}

@media (max-width:640px){
  .grid{grid-template-columns:repeat(6,minmax(0,1fr));}
  .span-4,.span-6,.span-8,.span-12{grid-column:span 6;}
  .brand-name{font-size:.98rem;}
  .brand-sub{font-size:.55rem;letter-spacing:.16em;}
  .section-title{font-size:clamp(1.5rem,6vw,2rem);}
  .footer-bottom{gap:.5rem .8rem;}
}

/* ---------- 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;
    scroll-behavior:auto!important;
  }
  .site-nav{transition:none!important;}
  [data-reveal],[data-reveal].is-reveal-pending{opacity:1!important;transform:none!important;}
  .header-status::before{animation:none!important;}
  .to-top:hover,.to-top:focus-visible,.footer-link:hover,.footer-link:focus-visible,.btn:hover,.btn:focus-visible{transform:none!important;}
}