@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&family=VT323&display=swap');

*,*::before,*::after{box-sizing:border-box;border-radius:0}

html{background:#000;scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:#000;
  color:#eafff3;
  font-family:'VT323',ui-monospace,'Courier New','PingFang SC','Hiragino Sans GB','Microsoft YaHei',monospace;
  font-size:19px;
  line-height:1.7;
  overflow-x:hidden;
}

img{display:block;max-width:100%;height:auto;border:3px solid #00ff80}

a{color:#00ff80;text-decoration:none}
a:focus-visible{outline:3px solid #00ff80;outline-offset:3px}

h1,h2,h3,h4{
  font-family:'Press Start 2P','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  font-weight:700;
  letter-spacing:.02em;
}

p{margin:0 0 1.05em}

.skip{
  position:absolute;left:-9999px;top:0;z-index:99;
  background:#00ff80;color:#000;padding:12px 16px;border:3px solid #0000ff;
}
.skip:focus{left:8px;top:8px}

/* ---------- 左侧固定导航 ---------- */
.rail{
  position:sticky;top:0;z-index:40;
  background:#000;
  border-bottom:4px solid #00ff80;
}

.rail-top{
  display:flex;align-items:center;gap:10px;
  padding:8px 12px;border-bottom:3px solid #0000ff;
}

.rail-brand{
  margin:0;flex:1 1 auto;min-width:0;
  font-family:'Press Start 2P','PingFang SC',sans-serif;
  font-size:13px;line-height:1.5;color:#00ff80;
}
.rail-brand a{display:flex;align-items:center;min-height:44px;padding:2px 0}
.rail-brand a:hover{background:none;color:#fff}

.rail-contact{
  flex:0 0 auto;display:flex;align-items:center;min-height:44px;
  padding:0 16px;font-size:16px;
  background:#0000ff;color:#fff;border:3px solid #00ff80;border-radius:999px;
}
.rail-contact:hover{background:#00ff80;color:#000}

.rail-list{
  list-style:none;margin:0;padding:8px 10px;
  display:flex;gap:8px;overflow-x:auto;-webkit-overflow-scrolling:touch;
}
.rail-list li{flex:0 0 auto}
.rail-list a{
  display:flex;align-items:center;min-height:44px;
  padding:0 15px;font-size:16px;white-space:nowrap;
  color:#00ff80;border:2px solid #00ff80;border-radius:999px;
}
.rail-list a:hover,.rail-list a.is-now{background:#00ff80;color:#000}

/* ---------- 头部 ---------- */
.hero{
  min-height:45vh;
  display:flex;align-items:center;justify-content:center;
  gap:20px;padding:36px 16px 42px;
  border-bottom:5px solid #00ff80;
  background-color:#000;
  background-image:
    repeating-linear-gradient(90deg,rgba(0,255,128,.13) 0 1px,transparent 1px 34px),
    repeating-linear-gradient(0deg,rgba(0,255,128,.13) 0 1px,transparent 1px 34px);
  background-attachment:fixed;
}

.hero-txt{max-width:26ch;text-align:center}

.hero-brand{
  margin:0 0 12px;font-size:16px;line-height:1.5;
  letter-spacing:.28em;color:#00ff80;
}

.hero h1{
  margin:0;
  font-size:clamp(23px,5.6vw,50px);
  line-height:1.28;
  color:#fff;
}

.px-icon{
  flex:0 0 auto;
  width:52px;height:52px;
  display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);
  gap:3px;padding:3px;
  background:#000;border:3px solid #00ff80;box-shadow:8px 8px 0 #0000ff;
}
.px-icon span{display:block;background:#00ff80}
.px-icon span:nth-child(2),.px-icon span:nth-child(4),
.px-icon span:nth-child(6),.px-icon span:nth-child(8){background:#0000ff}
.px-icon span:nth-child(5){background:#fff}

/* ---------- 主区 ---------- */
main{min-width:0}

.wrap{
  display:grid;grid-template-columns:1fr;
  background-image:repeating-linear-gradient(0deg,rgba(0,0,255,.14) 0 1px,transparent 1px 44px);
}

/* ---------- 侧栏 ---------- */
.toc{
  border-bottom:4px solid #0000ff;
  background:#000;padding:18px 14px;
}

.toc-h{
  margin:0 0 12px;font-size:15px;line-height:1.5;
  color:#00ff80;border-left:8px solid #0000ff;padding-left:10px;
}
.toc-h span{display:inline-block}

.toc-list{
  list-style:none;margin:0;padding:0;
  display:flex;flex-wrap:wrap;gap:8px;
}
.toc-list a{
  display:flex;align-items:center;min-height:40px;
  padding:0 12px;font-size:16px;
  color:#00ff80;border:2px dashed #00ff80;
}
.toc-list a:hover,.toc-list a.is-now{background:#00ff80;color:#000;border-style:solid}

/* ---------- 正文 ---------- */
.stage{border-top:4px solid #0000ff;background:#000;min-width:0}

.prose{
  counter-reset:sec;
  max-width:68ch;
  margin:0 auto;
  padding:26px 16px 64px;
}

.prose a{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}

.prose div{
  counter-increment:sec;
  position:relative;
  margin:0 0 30px;
  padding:20px 16px 8px;
  border:3px solid #00ff80;
  border-left:12px solid #0000ff;
  background:#000;
  box-shadow:10px 10px 0 rgba(0,0,255,.4);
  scroll-margin-top:136px;
  animation:ink .18s steps(4) both;
}
.prose div:last-child{margin-bottom:0}

.prose div::before{
  content:counter(sec,decimal-leading-zero);
  display:block;width:max-content;
  margin:0 0 12px;padding:3px 7px;
  font-family:'Press Start 2P',monospace;font-size:11px;line-height:1.4;
  background:#0000ff;color:#fff;letter-spacing:.1em;
}

@keyframes ink{
  from{opacity:0;transform:translateY(12px)}
  to{opacity:1;transform:none}
}
.prose div:nth-child(2){animation-delay:.05s}
.prose div:nth-child(3){animation-delay:.1s}
.prose div:nth-child(4){animation-delay:.15s}
.prose div:nth-child(5){animation-delay:.2s}
.prose div:nth-child(6){animation-delay:.25s}
.prose div:nth-child(7){animation-delay:.3s}

.prose h2{
  margin:0 0 16px;
  font-size:clamp(19px,3.2vw,25px);
  line-height:1.42;
  color:#00ff80;
}
.prose h2 span{
  display:inline-block;
  background:#00ff80;color:#000;
  padding:5px 11px;
  box-shadow:6px 6px 0 #0000ff;
}

.prose h3{
  margin:22px 0 12px;
  font-size:clamp(17px,2.6vw,20px);
  line-height:1.45;color:#fff;
}
.prose h3 span{
  display:inline-block;
  padding:3px 9px;
  border-left:7px solid #0000ff;
  background:#00002a;
}

.prose h4{margin:18px 0 10px;font-size:17px;line-height:1.5;color:#00ff80}

.prose strong{color:#fff;border-bottom:3px solid #00ff80}
.prose em{color:#9dffcd;font-style:normal;border-bottom:2px dotted #0000ff}

.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.1em}
.prose li{margin:0 0 .5em}
.prose ul li::marker{color:#00ff80}

.prose blockquote{
  margin:0 0 1.2em;padding:12px 16px;
  border-left:8px solid #0000ff;background:#00002a;color:#d9ffe9;
}

.prose table{width:100%;border-collapse:collapse;margin:0 0 1.2em;font-size:17px}
.prose th,.prose td{border:2px solid #00ff80;padding:8px 10px;text-align:left}
.prose th{background:#0000ff;color:#fff}

.prose code{
  font-family:'VT323',ui-monospace,monospace;
  background:#00002a;color:#00ff80;padding:1px 5px;
}

.prose hr{border:0;border-top:4px solid #0000ff;margin:26px 0}

.prose figure{margin:0 0 1.2em}
.prose figcaption{font-size:16px;line-height:1.5;color:#9dffcd;margin-top:6px}

/* ---------- 页脚 ---------- */
.foot{
  border-top:6px solid #00ff80;
  background:#000;
  padding:24px 16px 30px;
  display:grid;grid-template-columns:1fr;gap:20px;
}

.foot-brand a{
  display:block;padding:4px 0;
  font-family:'Press Start 2P','PingFang SC',sans-serif;
  font-size:clamp(20px,5vw,28px);line-height:1.3;
  color:#00ff80;word-break:break-word;
}
.foot-brand a:hover{background:#00ff80;color:#000}

.foot-list{list-style:none;margin:0;padding:0}
.foot-list a{
  display:flex;align-items:center;min-height:40px;
  font-size:16px;color:#9dffcd;border-bottom:2px dashed #0000ff;
}
.foot-list a:hover{background:#00ff80;color:#000}

.foot-h{margin:0 0 10px;font-size:14px;line-height:1.5;color:#fff}
.foot-h span{display:inline-block;padding:3px 8px;background:#0000ff;color:#fff}

.to-top{
  display:inline-flex;align-items:center;min-height:40px;padding:0 14px;
  font-size:16px;border:2px solid #00ff80;border-radius:999px;color:#00ff80;
}
.to-top:hover{background:#00ff80;color:#000}

.foot-legal{
  font-size:16px;line-height:1.6;color:#8fe6bb;
  border-top:3px solid #0000ff;padding-top:12px;
}

/* ---------- 宽屏 ---------- */
@media (min-width:760px){
  .foot{grid-template-columns:1.5fr 1fr 1fr 1fr;align-items:start}
  .foot-legal{border-top:0;padding-top:0}
}

@media (min-width:900px){
  .rail{
    position:fixed;inset:0 auto 0 0;width:232px;
    display:flex;flex-direction:column;
    border-bottom:0;border-right:4px solid #00ff80;
    overflow-y:auto;
  }
  .rail-list{
    flex-direction:column;overflow:visible;gap:7px;
    padding:10px 12px;flex:1 1 auto;
  }
  .rail-list a{width:100%;padding:0 16px}
  .rail-contact{margin-bottom:12px}

  main{margin-left:232px}

  .wrap{grid-template-columns:248px minmax(0,1fr)}

  .toc{
    position:sticky;top:0;align-self:start;
    border-bottom:0;border-right:4px solid #0000ff;
    padding:26px 16px;max-height:100vh;overflow:auto;
  }
  .toc-list{flex-direction:column;flex-wrap:nowrap}
  .toc-list a{width:100%}

  .hero{padding:56px 24px 60px;gap:28px}
  .px-icon{width:72px;height:72px}

  .prose{padding:34px 24px 80px}
  .prose div{scroll-margin-top:24px;padding:24px 22px 10px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .prose div{animation:none}
  .px-icon{transform:none !important}
  .hero{background-attachment:scroll}
}
</｜DSML｜ parameter>
</｜DSML｜ invoke>
</｜DSML｜ calls>

button[aria-expanded]{min-width:44px;min-height:44px}