@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&display=swap');

:root{
  --ink:#192617;
  --ink-2:#1e2e1b;
  --neon:#87ff71;
  --gold:#ffce5c;
  --paper:#eaf6e4;
  --pad:clamp(16px,4vw,40px);
  --maxw:1180px;
}

*,*::before,*::after{box-sizing:border-box}

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

body{
  margin:0;
  background-color:var(--ink);
  background-image:radial-gradient(rgba(135,255,113,.13) 1px,transparent 1px);
  background-size:22px 22px;
  color:var(--paper);
  font-family:"Space Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:16px;
  line-height:1.7;
}

::selection{background:var(--gold);color:var(--ink)}
a{color:var(--neon)}
:focus-visible{outline:3px dashed var(--gold);outline-offset:3px}

.brand{
  display:inline-block;
  font-weight:700;
  font-size:18px;
  letter-spacing:.14em;
  color:var(--gold);
  text-decoration:none;
  border:2px solid var(--neon);
  padding:6px 10px;
  transform:rotate(-2deg);
  background:rgba(25,38,23,.9);
  white-space:nowrap;
}
.brand:hover{color:var(--ink);background:var(--neon);border-color:var(--gold)}

/* ---------- 顶栏 ---------- */
.masthead{
  position:sticky;
  top:0;
  z-index:60;
  display:flex;
  align-items:center;
  gap:8px;
  padding:10px var(--pad);
  background:var(--ink);
  border-bottom:2px dashed rgba(255,206,92,.55);
}
.brand-slot{flex:1;display:flex;justify-content:center;min-width:0}

.menu-panel{flex:0 0 auto}
.menu-panel > summary{
  list-style:none;
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:0 12px;
  font-size:16px;
  letter-spacing:.1em;
  color:var(--neon);
  border:2px solid var(--neon);
  background:transparent;
  user-select:none;
}
.menu-panel > summary::-webkit-details-marker{display:none}
.menu-panel > summary::before{
  content:"";
  width:12px;height:12px;
  background:var(--gold);
  clip-path:polygon(0 0,100% 0,50% 100%);
  transition:transform .2s ease;
}
.menu-panel[open] > summary::before{transform:rotate(180deg)}
.menu-panel[open] > summary{background:var(--neon);color:var(--ink)}

.nav-list{
  list-style:none;
  margin:8px 0 0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:4px;
}
.nav-list a{
  display:inline-flex;
  align-items:center;
  gap:9px;
  min-height:44px;
  padding:0 12px;
  font-size:16px;
  color:var(--paper);
  text-decoration:none;
  border:2px solid transparent;
}
.nav-list a:hover,
.nav-list a:focus-visible{color:var(--ink);background:var(--neon);border-color:var(--gold)}
.nav-list .ico{
  flex:0 0 auto;
  width:10px;height:10px;
  background:var(--gold);
  transform:rotate(45deg);
}
.nav-list li:nth-child(2n) .ico{border-radius:50%;background:var(--neon);transform:none}
.nav-list li:nth-child(3n) .ico{clip-path:polygon(50% 0,100% 100%,0 100%);transform:none;background:var(--gold)}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;
  overflow:hidden;
  min-height:100vh;
  min-height:100svh;
  display:grid;
  place-items:center;
  padding:clamp(48px,12vw,120px) var(--pad);
  text-align:center;
  border-bottom:6px solid var(--neon);
}
.hero-band{
  position:absolute;
  left:-12%;
  right:-12%;
  top:34%;
  height:32%;
  background:var(--neon);
  clip-path:polygon(0 20%,100% 0,100% 78%,0 100%);
  transform:rotate(-3deg);
  opacity:.92;
  z-index:0;
}
.hero-shapes{position:absolute;inset:0;z-index:1;pointer-events:none}
.hero-shapes span{position:absolute;display:block}
.sh-a{top:11%;left:7%;width:54px;height:54px;background:var(--gold);clip-path:polygon(50% 0,100% 100%,0 100%);transform:rotate(14deg)}
.sh-b{top:20%;right:9%;width:66px;height:66px;border:6px dotted var(--neon);border-radius:50%}
.sh-c{bottom:14%;left:12%;width:92px;height:20px;background:var(--gold);transform:rotate(-18deg)}
.sh-d{bottom:24%;right:7%;width:46px;height:46px;background:var(--neon);clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);transform:rotate(18deg)}

.hero-h1{
  position:relative;
  z-index:2;
  margin:0;
  max-width:16em;
  font-size:clamp(2.1rem,10.5vw,6.4rem);
  line-height:1.06;
  letter-spacing:-.02em;
  font-weight:700;
  color:#fff;
  mix-blend-mode:difference;
  transform:rotate(-1.5deg);
}

/* ---------- 正文骨架 ---------- */
main{padding:clamp(26px,5vw,64px) var(--pad)}

.wrap{
  max-width:var(--maxw);
  margin:0 auto;
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(18px,3vw,36px);
}

/* ---------- 侧栏 ---------- */
.rail{display:grid;gap:14px;align-content:start;min-width:0}
.rail-block{padding:12px;border:2px dashed rgba(255,206,92,.5)}
.rail-h{
  margin:0 0 10px;
  font-size:16px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--gold);
  line-height:1.4;
}
.rail-h > span{display:inline-block;border-bottom:3px solid var(--neon);padding-bottom:2px}

.rail-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:2px 6px;
}
.rail-list a{
  display:flex;
  align-items:center;
  gap:8px;
  min-height:40px;
  padding:2px 6px;
  font-size:16px;
  color:var(--paper);
  text-decoration:none;
  border-left:3px solid transparent;
}
.rail-list a:hover,
.rail-list a:focus-visible{color:var(--neon);border-left-color:var(--neon)}
.rail-num{color:var(--gold);font-size:14px;letter-spacing:.06em}

.rail-block--top{display:grid;gap:6px}
.rail-top{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;height:44px;
  font-size:20px;
  line-height:1;
  color:var(--neon);
  text-decoration:none;
  border:2px solid var(--neon);
}
.rail-top:hover{background:var(--neon);color:var(--ink)}

/* ---------- 正文容器 ---------- */
.content-shell{
  min-width:0;
  padding:clamp(18px,4vw,44px);
  background:var(--ink-2);
  border:2px solid rgba(135,255,113,.28);
  box-shadow:0 22px 50px rgba(0,0,0,.5);
}

.prose{font-size:17px;overflow-wrap:break-word}
.prose > *:first-child{margin-top:0}
.prose article{scroll-margin-top:96px}
.prose > article + article{
  margin-top:clamp(34px,6vw,64px);
  padding-top:clamp(22px,4vw,38px);
  border-top:2px dashed rgba(255,206,92,.32);
}
.prose h2{
  position:relative;
  margin:0 0 16px;
  font-size:clamp(1.4rem,3.6vw,2.1rem);
  line-height:1.25;
  letter-spacing:-.01em;
  color:var(--neon);
}
.prose h2::before{
  content:"";
  position:absolute;
  left:-13px;
  top:.42em;
  width:9px;height:9px;
  background:var(--gold);
  clip-path:polygon(50% 0,100% 100%,0 100%);
}
.prose h2 > span{
  display:inline-block;
  padding:0 .14em;
  background:linear-gradient(transparent 64%,rgba(255,206,92,.42) 0);
}
.prose h2 > span > span{display:inline-block;transform:rotate(-1.2deg)}
.prose h3{
  margin:24px 0 10px;
  font-size:1.18rem;
  line-height:1.4;
  color:var(--gold);
}
.prose h3 > span{border-bottom:3px dotted var(--neon);padding-bottom:2px}
.prose p{margin:0 0 1.05em}
.prose ul,.prose ol{margin:0 0 1.15em;padding-left:1.4em}
.prose li{margin:.35em 0}
.prose li::marker{color:var(--gold)}
.prose a{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}
.prose strong{color:var(--gold)}
.prose img{
  display:block;
  max-width:100%;
  height:auto;
  margin:18px 0;
  border:3px solid var(--neon);
  box-shadow:10px 10px 0 rgba(255,206,92,.3);
}
.prose blockquote{
  margin:18px 0;
  padding:12px 16px;
  border-left:6px solid var(--gold);
  background:rgba(135,255,113,.07);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose hr{border:0;border-top:2px dotted rgba(135,255,113,.4);margin:26px 0}
.prose table{width:100%;border-collapse:collapse;font-size:16px}
.prose th,.prose td{border:1px dashed rgba(255,206,92,.4);padding:8px 10px;text-align:left}

/* ---------- 页脚 ---------- */
.foot{
  margin-top:clamp(36px,7vw,88px);
  padding:clamp(26px,5vw,48px) var(--pad) 18px;
  border-top:6px solid var(--gold);
  background:#141f12;
}
.foot-top{
  max-width:var(--maxw);
  margin:0 auto;
  display:grid;
  grid-template-columns:1fr;
  gap:22px;
}
.foot-brand{display:flex;align-items:flex-start}
.brand--foot{transform:rotate(1.5deg)}
.foot-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.foot dl{margin:0;min-width:0}
.foot dt{
  margin-bottom:4px;
  font-size:14px;
  letter-spacing:.12em;
  color:var(--gold);
}
.foot dd{margin:0}
.foot dd a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:16px;
  color:var(--paper);
  text-decoration:none;
  border-bottom:2px dotted transparent;
}
.foot dd a:hover,
.foot dd a:focus-visible{color:var(--neon);border-bottom-color:var(--neon)}
.foot-bottom{
  max-width:var(--maxw);
  margin:24px auto 0;
  padding-top:14px;
  border-top:2px dotted rgba(135,255,113,.3);
  text-align:center;
  font-size:16px;
  color:rgba(234,246,228,.78);
}

/* ---------- 动效 ---------- */
.js .reveal{
  opacity:0;
  transform:translateY(20px) rotate(.3deg);
  transition:opacity .55s ease,transform .55s cubic-bezier(.2,.8,.25,1);
}
.js .reveal.is-in{opacity:1;transform:none}
.js .hero-h1.reveal.is-in{transform:rotate(-1.5deg)}

/* ---------- 手机排布 ---------- */
@media (max-width:939px){
  .masthead{flex-wrap:wrap}
  .menu-panel--l{order:1}
  .brand-slot{order:2}
  .menu-panel--r{order:3}
  .menu-panel[open]{order:4;flex-basis:100%}
  .menu-panel[open] .nav-list{display:grid;grid-template-columns:1fr 1fr}
  .sh-a,.sh-c{display:none}
}

@media (min-width:640px){
  .foot-top{grid-template-columns:1fr 2fr}
}

@media (min-width:940px){
  .masthead .menu-panel > summary{display:none}
  .masthead .menu-panel{display:flex}
  .menu-panel--l{justify-content:flex-end}
  .menu-panel--r{justify-content:flex-start}
  .masthead .menu-panel .nav-list{
    display:flex;
    flex-direction:row;
    align-items:center;
    gap:2px;
    margin:0;
  }
  .wrap{grid-template-columns:200px minmax(0,1fr);align-items:start}
  .rail{position:sticky;top:92px}
  .rail-list{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{transition:none;opacity:1;transform:none}
  .js .hero-h1.reveal{transform:rotate(-1.5deg)}
}

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