:root{
  --ay-night:#071A2F;
  --ay-deep:#0D2742;
  --ay-cyan:#2EF2D0;
  --ay-signal:#FF7A1A;
  --ay-paper:#E8DCC3;
  --ay-cream:#F5F0E4;
  --ay-slate:#8B949E;
  --ay-moss:#6F8F6D;
  --ay-clay:#B96E4E;
  --ay-ink:#02070D;
  --ay-cream-90:rgba(245,240,228,.9);
  --ay-cream-70:rgba(245,240,228,.7);
  --ay-cream-16:rgba(245,240,228,.16);
  --ay-cream-10:rgba(245,240,228,.1);
  --ay-cyan-30:rgba(46,242,208,.3);
  --ay-cyan-12:rgba(46,242,208,.12);
  --ay-line:rgba(46,242,208,.24);
  --ay-grid-line:rgba(46,242,208,.055);
  --ay-shadow-hard:6px 6px 0 rgba(2,7,13,.85);
  --ay-shadow-glow:6px 6px 0 rgba(46,242,208,.28);
  --ay-font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ay-font-data:ui-monospace,"SF Mono","SFMono-Regular",Menlo,Consolas,"Roboto Mono","Courier New",monospace;
  --ay-shell-max:1240px;
  --ay-gutter:clamp(1rem,4vw,2.5rem);
}

*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  background-color:var(--ay-night);
}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,picture,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
hr{border:0}

body{
  min-height:100vh;
  background-color:var(--ay-night);
  background-image:
    linear-gradient(var(--ay-grid-line) 1px,transparent 1px),
    linear-gradient(90deg,var(--ay-grid-line) 1px,transparent 1px);
  background-size:88px 88px;
  color:var(--ay-cream);
  font-family:var(--ay-font-sans);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  overflow-x:hidden;
}

h1,h2,h3,h4,h5,h6{
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.02em;
  color:var(--ay-cream);
}
h1{font-size:clamp(2.2rem,5.6vw,4rem)}
h2{font-size:clamp(1.55rem,3.1vw,2.5rem)}
h3{font-size:clamp(1.15rem,1.8vw,1.45rem)}
h4{font-size:1.05rem}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible,
input:focus-visible,
summary:focus-visible{
  outline:3px solid var(--ay-cyan);
  outline-offset:3px;
}

#main-content{display:block;scroll-margin-top:1rem}
.ay-main{display:block}

.ay-shell{
  width:100%;
  max-width:var(--ay-shell-max);
  margin-inline:auto;
  padding-inline:var(--ay-gutter);
}

/* ================= 跳转链接 ================= */
.ay-skip{
  position:fixed;
  top:-140px;
  left:clamp(.5rem,3vw,1.5rem);
  z-index:200;
  display:inline-block;
  padding:.7rem 1.15rem;
  background:var(--ay-cyan);
  color:var(--ay-ink);
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  border:2px solid var(--ay-ink);
  box-shadow:4px 4px 0 rgba(2,7,13,.9);
  transition:top .18s ease;
}
.ay-skip:focus,
.ay-skip:focus-visible{
  top:clamp(.5rem,3vw,1.5rem);
}

/* ================= 阅读进度 ================= */
.ay-progress{
  position:fixed;
  inset:0 0 auto 0;
  height:3px;
  z-index:120;
  background:rgba(245,240,228,.08);
  pointer-events:none;
}
.ay-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--ay-cyan) 0%,var(--ay-cyan) 55%,var(--ay-signal) 100%);
  transition:width .12s linear;
}

/* ================= 头部 ================= */
.ay-header{
  position:relative;
  z-index:60;
  background:var(--ay-night);
}

.ay-topbar{
  background:var(--ay-ink);
  border-bottom:1px solid var(--ay-line);
}
.ay-topbar__inner{
  display:flex;
  align-items:center;
  gap:clamp(.6rem,2vw,1.75rem);
  min-height:52px;
  padding-block:.45rem;
}
.ay-brand{
  display:inline-flex;
  align-items:baseline;
  gap:.6rem;
  flex-wrap:wrap;
  flex:0 0 auto;
}
.ay-brand__name{
  font-size:1.02rem;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--ay-cream);
  white-space:nowrap;
}
.ay-brand__mark{
  font-family:var(--ay-font-data);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--ay-cyan);
  white-space:nowrap;
}
.ay-topbar__note{
  margin-left:auto;
  min-width:0;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--ay-slate);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.ay-utility{
  display:flex;
  align-items:center;
  gap:.4rem;
  flex:0 0 auto;
}
.ay-utility__link{
  display:inline-block;
  padding:.3rem .65rem;
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--ay-cream-70);
  border:1px solid var(--ay-cream-16);
  transition:color .2s ease,background-color .2s ease,border-color .2s ease;
}
.ay-utility__link:hover,
.ay-utility__link:focus-visible{
  color:var(--ay-ink);
  background:var(--ay-cyan);
  border-color:var(--ay-cyan);
}

.ay-navbar{
  background:var(--ay-deep);
  border-bottom:2px solid var(--ay-ink);
  box-shadow:0 1px 0 var(--ay-cyan-30),inset 0 1px 0 rgba(245,240,228,.06);
}
.ay-navbar__inner{
  display:flex;
  align-items:stretch;
  gap:.75rem;
}

.ay-nav{
  flex:1 1 auto;
  min-width:0;
}
.ay-nav__list{
  display:flex;
  align-items:stretch;
  overflow-x:auto;
  overflow-y:hidden;
  counter-reset:aynav;
  scrollbar-width:thin;
  scrollbar-color:var(--ay-cyan-30) transparent;
}
.ay-nav__list::-webkit-scrollbar{height:3px}
.ay-nav__list::-webkit-scrollbar-track{background:transparent}
.ay-nav__list::-webkit-scrollbar-thumb{background:var(--ay-cyan-30)}
.ay-nav__list > li{
  display:flex;
  flex:0 0 auto;
}
.ay-nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  padding:1rem .9rem;
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--ay-cream-90);
  white-space:nowrap;
  border-bottom:3px solid transparent;
  transition:color .2s ease,background-color .2s ease,border-color .2s ease;
}
.ay-nav__link::before{
  counter-increment:aynav;
  content:counter(aynav,decimal-leading-zero);
  font-family:var(--ay-font-data);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--ay-slate);
  transition:color .2s ease;
}
.ay-nav__link:hover,
.ay-nav__link:focus-visible{
  color:var(--ay-cyan);
  background:rgba(46,242,208,.07);
  border-bottom-color:var(--ay-cyan);
}
.ay-nav__link:hover::before,
.ay-nav__link:focus-visible::before{color:var(--ay-cyan)}
.ay-nav__link[aria-current="page"]{
  color:var(--ay-ink);
  background:var(--ay-cyan);
  border-bottom-color:var(--ay-signal);
}
.ay-nav__link[aria-current="page"]::before{color:rgba(2,7,13,.55)}
.ay-nav__link[aria-current="page"]:hover{
  color:var(--ay-ink);
  background:var(--ay-cyan);
}

.ay-navbar__coord{
  display:flex;
  align-items:center;
  flex:0 0 auto;
  padding-left:1rem;
  border-left:1px solid var(--ay-cream-16);
  font-family:var(--ay-font-data);
  font-size:11px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--ay-slate);
  white-space:nowrap;
}

.ay-nav-toggle{
  display:none;
  align-items:center;
  gap:.55rem;
  flex:0 0 auto;
  align-self:center;
  padding:.5rem .8rem;
  border:2px solid var(--ay-cyan);
  color:var(--ay-cyan);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.1em;
  transition:background-color .2s ease,color .2s ease;
}
.ay-nav-toggle:hover{background:var(--ay-cyan-12)}
.ay-nav-toggle__bars{
  display:inline-flex;
  flex-direction:column;
  justify-content:space-between;
  width:16px;
  height:12px;
}
.ay-nav-toggle__bars i{
  display:block;
  height:2px;
  width:100%;
  background:currentColor;
  transition:transform .2s ease,opacity .2s ease;
}
.ay-nav-toggle[aria-expanded="true"] .ay-nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.ay-nav-toggle[aria-expanded="true"] .ay-nav-toggle__bars i:nth-child(2){opacity:0}
.ay-nav-toggle[aria-expanded="true"] .ay-nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.ay-nav-toggle__text{line-height:1;letter-spacing:.1em}

/* ================= 页脚 ================= */
.ay-footer{
  margin-top:clamp(2.5rem,7vw,5rem);
  background:var(--ay-deep);
  border-top:3px solid var(--ay-cyan);
  color:var(--ay-cream);
}
.ay-footer__inner{
  display:grid;
  grid-template-columns:1.15fr .95fr 1.15fr;
  gap:clamp(1.5rem,4vw,3.5rem);
  padding-block:clamp(2.25rem,5vw,3.75rem);
}
.ay-footer__brand{min-width:0}
.ay-footer__logo{
  display:inline-block;
  font-size:clamp(1.35rem,2.6vw,1.9rem);
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--ay-cream);
  border-bottom:2px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.ay-footer__logo:hover,
.ay-footer__logo:focus-visible{
  color:var(--ay-cyan);
  border-bottom-color:var(--ay-cyan);
}
.ay-footer__mark{
  margin-top:.45rem;
  font-family:var(--ay-font-data);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--ay-cyan);
}
.ay-footer__desc{
  margin-top:1rem;
  max-width:26ch;
  font-size:14.5px;
  line-height:1.7;
  color:var(--ay-slate);
}
.ay-footer__heading{
  margin-bottom:1rem;
  padding-bottom:.5rem;
  border-bottom:1px solid var(--ay-cream-16);
  font-size:12px;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--ay-cyan);
}
.ay-footer__links{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:.5rem 1rem;
}
.ay-footer__link{
  display:inline-block;
  font-size:14.5px;
  color:var(--ay-cream-70);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.ay-footer__link:hover,
.ay-footer__link:focus-visible{
  color:var(--ay-cyan);
  border-bottom-color:var(--ay-cyan);
}
.ay-footer__contacts{
  display:grid;
  gap:.55rem;
}
.ay-footer__contact-item{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:.65rem;
  align-items:start;
  font-size:14px;
  line-height:1.65;
  color:var(--ay-cream-90);
}
.ay-footer__contact-key{
  padding-top:.2rem;
  font-family:var(--ay-font-data);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--ay-slate);
  white-space:nowrap;
}
.ay-footer__contact-value{word-break:break-word}
.ay-footer__note{
  margin-top:1.1rem;
  padding-left:.8rem;
  border-left:2px solid var(--ay-clay);
  font-size:12.5px;
  line-height:1.7;
  color:var(--ay-slate);
}
.ay-footer__base{
  background:var(--ay-ink);
  border-top:1px solid rgba(245,240,228,.12);
}
.ay-footer__base-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.4rem 1.5rem;
  padding-block:1rem;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--ay-slate);
}
.ay-footer__copy,
.ay-footer__icp{
  margin:0;
}
.ay-footer__icp{font-family:var(--ay-font-data);letter-spacing:.08em}

/* ================= 通用内容组件 ================= */
.ay-section{
  position:relative;
  padding-block:clamp(2.25rem,5.5vw,4.5rem);
}
.ay-section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:.4rem 1.25rem;
  margin-bottom:clamp(1.25rem,3vw,2rem);
  padding-bottom:.85rem;
  border-bottom:2px solid var(--ay-cream-16);
}
.ay-section__index{
  font-family:var(--ay-font-data);
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--ay-cyan);
}
.ay-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(.9rem,2.2vw,1.75rem);
}
.ay-card{
  position:relative;
  min-width:0;
  padding:clamp(1rem,2.4vw,1.75rem);
  background:var(--ay-deep);
  border:2px solid var(--ay-cream-16);
  box-shadow:var(--ay-shadow-hard);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.ay-card:hover,
.ay-card:focus-within{
  border-color:var(--ay-cyan);
  box-shadow:var(--ay-shadow-glow);
  transform:translate(-2px,-2px);
}

.ay-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.78rem 1.3rem;
  border:2px solid var(--ay-cyan);
  background:transparent;
  color:var(--ay-cyan);
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  line-height:1.4;
  box-shadow:4px 4px 0 rgba(2,7,13,.85);
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.ay-btn:hover,
.ay-btn:focus-visible{
  background:var(--ay-cyan);
  color:var(--ay-ink);
  transform:translate(-2px,-2px);
  box-shadow:6px 6px 0 rgba(2,7,13,.9);
}
.ay-btn--solid{
  background:var(--ay-cyan);
  border-color:var(--ay-cyan);
  color:var(--ay-ink);
}
.ay-btn--solid:hover,
.ay-btn--solid:focus-visible{
  background:var(--ay-cream);
  border-color:var(--ay-cream);
  color:var(--ay-ink);
}
.ay-btn--signal{
  border-color:var(--ay-signal);
  color:var(--ay-signal);
}
.ay-btn--signal:hover,
.ay-btn--signal:focus-visible{
  background:var(--ay-signal);
  border-color:var(--ay-signal);
  color:var(--ay-ink);
}

.ay-tag{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  padding:.15rem .5rem;
  border:1px solid var(--ay-cream-16);
  color:var(--ay-slate);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.1em;
  line-height:1.7;
  white-space:nowrap;
}
.ay-tag--new{
  color:var(--ay-cyan);
  border-color:var(--ay-cyan-30);
  background:rgba(46,242,208,.09);
}
.ay-tag--old{
  color:var(--ay-paper);
  border-color:rgba(232,220,195,.42);
  background:rgba(232,220,195,.08);
}
.ay-tag--live{
  color:var(--ay-signal);
  border-color:rgba(255,122,26,.42);
  background:rgba(255,122,26,.1);
}
.ay-tag--done{
  color:var(--ay-moss);
  border-color:rgba(111,143,109,.5);
  background:rgba(111,143,109,.14);
}

.ay-label{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  letter-spacing:.14em;
  line-height:1.6;
  color:var(--ay-slate);
}
.ay-data{
  font-family:var(--ay-font-data);
  font-weight:600;
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
}

.ay-breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45rem;
  padding-block:1.1rem;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--ay-slate);
}
.ay-breadcrumb__link{
  color:var(--ay-slate);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.ay-breadcrumb__link:hover,
.ay-breadcrumb__link:focus-visible{
  color:var(--ay-cyan);
  border-bottom-color:var(--ay-cyan);
}
.ay-breadcrumb__sep{
  color:rgba(245,240,228,.28);
  font-family:var(--ay-font-data);
}
.ay-breadcrumb__current{color:var(--ay-cream)}

.ay-media{
  position:relative;
  display:block;
  width:100%;
  overflow:hidden;
  aspect-ratio:16 / 10;
  border:2px solid var(--ay-cream-16);
  background:
    linear-gradient(135deg,rgba(13,39,66,.9),rgba(7,26,47,.9)),
    repeating-linear-gradient(90deg,transparent 0 22px,rgba(46,242,208,.07) 22px 23px);
}
.ay-media > img,
.ay-media > picture > img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.ay-media > svg{
  width:100%;
  height:100%;
  object-fit:cover;
}
.ay-media__cap{
  position:absolute;
  inset:auto 0 0 0;
  padding:.55rem .8rem;
  font-family:var(--ay-font-data);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--ay-cream);
  background:linear-gradient(to top,rgba(2,7,13,.94),rgba(2,7,13,0));
}
.ay-media--wide{aspect-ratio:21 / 9}
.ay-media--tall{aspect-ratio:4 / 5}
.ay-media--square{aspect-ratio:1 / 1}

.ay-js .ay-reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .42s ease,transform .42s ease;
}
.ay-js .ay-reveal.is-visible{
  opacity:1;
  transform:none;
}

/* ================= 响应式 ================= */
@media (max-width:1199px){
  .ay-nav__link{padding:1rem .72rem;font-size:14px}
}

@media (max-width:1023px){
  .ay-topbar__note{display:none}
  .ay-utility{margin-left:auto}
  .ay-footer__inner{grid-template-columns:1fr 1fr}
  .ay-footer__brand{grid-column:1 / -1}
}

@media (max-width:899px){
  body{font-size:16px;background-size:64px 64px}
  .ay-nav-toggle{display:inline-flex;order:1}
  .ay-navbar__inner{flex-wrap:wrap;gap:.55rem;padding-block:.6rem}
  .ay-navbar__coord{
    order:2;
    margin-left:auto;
    padding-left:0;
    border-left:0;
    font-size:10.5px;
  }
  .ay-nav{
    order:3;
    flex:1 1 100%;
    min-width:0;
    display:none;
  }
  .ay-nav[data-open="true"]{
    display:block;
    border-top:1px solid var(--ay-cream-16);
    margin-top:.35rem;
    padding-top:.35rem;
  }
  .ay-nav__list{
    flex-direction:column;
    overflow-x:visible;
  }
  .ay-nav__list > li{
    flex:1 1 auto;
    width:100%;
  }
  .ay-nav__link{
    width:100%;
    justify-content:flex-start;
    padding:.8rem .3rem;
    font-size:14.5px;
    border-bottom:1px solid var(--ay-cream-16);
    border-left:3px solid transparent;
  }
  .ay-nav__link:hover,
  .ay-nav__link:focus-visible{
    border-bottom-color:var(--ay-cream-16);
    border-left-color:var(--ay-cyan);
  }
  .ay-nav__link[aria-current="page"]{
    border-bottom-color:var(--ay-cream-16);
    border-left-color:var(--ay-signal);
  }
  .ay-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
}

@media (max-width:767px){
  .ay-footer__inner{grid-template-columns:1fr}
  .ay-footer__links{grid-template-columns:1fr 1fr}
  .ay-footer__base-inner{flex-direction:column;align-items:flex-start}
}

@media (max-width:479px){
  .ay-brand__mark{display:none}
  .ay-utility__link{padding:.28rem .5rem;font-size:11.5px;letter-spacing:.04em}
  .ay-footer__links{grid-template-columns:1fr}
  .ay-breadcrumb{font-size:11.5px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .ay-js .ay-reveal{
    opacity:1 !important;
    transform:none !important;
  }
  .ay-card:hover,
  .ay-card:focus-within,
  .ay-btn:hover,
  .ay-btn:focus-visible{
    transform:none;
  }
}