:root{
  --lime:#80ff00;
  --green:#00ff00;
  --ink:#1f2617;
  --paper:#f1ffe0;
  --dim:#c9e6a9;
}

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

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

body{
  margin:0;
  background:var(--ink);
  color:#e9ffd8;
  font-family:'DM Sans',system-ui,-apple-system,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.7;
  overflow-x:hidden;
}

img{max-width:100%;height:auto}
a{color:inherit}

main [id]{scroll-margin-top:126px}

/* ---------- 顶部细条 ---------- */
.topline{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:14px;
  background:var(--green);
  color:var(--ink);
  font-size:16px;
  font-weight:700;
  letter-spacing:.16em;
  padding:7px 12px;
  border-bottom:3px solid var(--ink);
  text-transform:uppercase;
  overflow:hidden;
  white-space:nowrap;
}
.topline b{font-weight:700;opacity:.75}

/* ---------- 头部 ---------- */
.hd{
  position:sticky;
  top:0;
  z-index:70;
  background:var(--ink);
  border-bottom:4px solid var(--lime);
}

.hd-row{
  position:relative;
  z-index:12;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:10px 16px;
  background:var(--ink);
}

.mtoggle{
  position:absolute;
  width:1px;height:1px;
  opacity:0;
  pointer-events:none;
}

.mark{
  display:flex;
  align-items:center;
  justify-content:center;
  width:52px;
  height:52px;
  background:var(--lime);
  border:3px solid var(--lime);
  text-decoration:none;
  transform:rotate(-4deg);
  transition:transform .2s ease,background .2s ease;
}
.mark:hover,.mark:focus-visible{transform:rotate(3deg) scale(1.05);background:var(--green)}
.mark-t{
  color:var(--ink);
  font-weight:700;
  font-size:24px;
  line-height:1;
}
.mark-img{width:100%;height:100%;object-fit:cover;display:block}

.burger{
  display:inline-block;
  padding:11px 20px;
  min-height:46px;
  background:transparent;
  color:var(--lime);
  border:3px solid var(--lime);
  font-size:16px;
  font-weight:700;
  letter-spacing:.22em;
  cursor:pointer;
  user-select:none;
  transition:background .18s ease,color .18s ease;
}
.burger:hover,.burger:focus-visible{background:var(--lime);color:var(--ink)}
.mtoggle:focus-visible + .mark{outline:3px dashed var(--green);outline-offset:4px}
.mtoggle:checked ~ .burger{background:var(--green);border-color:var(--green);color:var(--ink)}

/* ---------- 全屏菜单 ---------- */
.menu{
  position:fixed;
  inset:0;
  z-index:8;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:120px 18px 40px;
  background:rgba(20,25,15,.98);
  background-image:radial-gradient(circle,rgba(128,255,0,.28) 1.2px,transparent 1.3px);
  background-size:24px 24px;
  transform:translateY(-104%);
  transition:transform .38s cubic-bezier(.6,.05,.35,1);
  overflow-y:auto;
}
.mtoggle:checked ~ .menu{transform:translateY(0)}

.menu p{
  margin:0;
  max-width:960px;
  text-align:right;
  font-size:clamp(1.5rem,5vw,3.2rem);
  line-height:1.15;
  font-weight:700;
}
.menu a{
  display:inline-block;
  padding:10px 16px;
  margin:5px 4px;
  border:3px solid var(--lime);
  color:var(--lime);
  text-decoration:none;
  letter-spacing:-.02em;
  transition:background .16s ease,color .16s ease,transform .16s ease;
}
.menu a:hover,.menu a:focus-visible{
  background:var(--lime);
  color:var(--ink);
  transform:rotate(-1.6deg);
}

/* ---------- 主视觉 ---------- */
.hero{
  position:relative;
  min-height:calc(100svh - 118px);
  display:flex;
  align-items:flex-end;
  justify-content:flex-end;
  padding:56px 20px 48px;
  overflow:hidden;
  border-bottom:4px solid var(--lime);
}

.dots{
  position:absolute;
  inset:0;
  background-image:radial-gradient(circle,rgba(128,255,0,.5) 1.4px,transparent 1.5px);
  background-size:26px 26px;
  opacity:.55;
  -webkit-mask-image:linear-gradient(to top,#000 10%,transparent 92%);
  mask-image:linear-gradient(to top,#000 10%,transparent 92%);
  pointer-events:none;
}

.stick{position:absolute;inset:0;pointer-events:none}
.stick i{position:absolute;display:block;border:4px solid var(--lime)}
.stick i:nth-child(1){top:20%;left:11%;width:46px;height:46px;background:var(--green);border-color:var(--ink);transform:rotate(13deg);animation:jit 3.4s ease-in-out infinite}
.stick i:nth-child(2){top:33%;left:29%;width:24px;height:24px;border-color:var(--green);transform:rotate(-9deg);animation:jit 2.6s ease-in-out infinite reverse}
.stick i:nth-child(3){bottom:26%;right:9%;width:64px;height:64px;background:var(--lime);border-color:var(--ink);transform:rotate(8deg);animation:jit 4.1s ease-in-out infinite}
.stick i:nth-child(4){top:16%;right:22%;width:18px;height:58px;background:var(--green);border-color:var(--ink);transform:rotate(-22deg);animation:jit 3s ease-in-out infinite reverse}

@keyframes jit{
  0%,100%{transform:translate(0,0) rotate(0deg)}
  33%{transform:translate(4px,-5px) rotate(4deg)}
  66%{transform:translate(-3px,4px) rotate(-3deg)}
}

.hero-in{
  position:relative;
  z-index:2;
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:16px;
  width:100%;
  max-width:1160px;
  margin:0 auto;
}

.hero-b{
  margin:0;
  display:inline-block;
  background:var(--green);
  color:var(--ink);
  border:3px solid var(--ink);
  font-weight:700;
  font-size:16px;
  letter-spacing:.12em;
  padding:6px 14px;
  transform:rotate(-2.6deg);
  box-shadow:5px 5px 0 var(--lime);
}

.hero-t{
  margin:0;
  font-size:clamp(2.3rem,9.2vw,7rem);
  line-height:.94;
  letter-spacing:-.045em;
  text-align:right;
  color:var(--lime);
  font-weight:700;
  overflow-wrap:break-word;
  text-shadow:6px 6px 0 rgba(0,255,0,.16);
}

/* ---------- 跑马灯 ---------- */
.tape{
  overflow:hidden;
  background:var(--lime);
  color:var(--ink);
  border-bottom:4px solid var(--lime);
}
.tape-run{
  display:inline-block;
  white-space:nowrap;
  font-weight:700;
  font-size:16px;
  letter-spacing:.2em;
  padding:9px 0;
  animation:tape 30s linear infinite;
}
@keyframes tape{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- 布局骨架 ---------- */
.wrap{
  max-width:1180px;
  margin:0 auto;
  padding:clamp(22px,3.4vw,48px) 18px 0;
  display:grid;
  grid-template-columns:minmax(0,1fr) 258px;
  gap:clamp(18px,2.6vw,36px);
  align-items:start;
}

/* ---------- 正文 ---------- */
.prose{
  background:var(--paper);
  color:var(--ink);
  border:4px solid var(--lime);
  padding:clamp(18px,3.4vw,46px);
  font-size:17px;
  line-height:1.78;
  box-shadow:10px 10px 0 rgba(128,255,0,.2);
  overflow-wrap:break-word;
}
.prose > :first-child{margin-top:0}
.prose > :last-child{margin-bottom:0}

.prose h2{
  font-size:clamp(1.4rem,3.6vw,2rem);
  line-height:1.28;
  letter-spacing:-.02em;
  margin:1.5em 0 .55em;
  padding-top:.5em;
  border-top:4px solid var(--ink);
  font-weight:700;
}
.prose h2 span{background:var(--lime);padding:0 .12em}
.prose h3{
  font-size:clamp(1.15rem,2.6vw,1.4rem);
  line-height:1.35;
  margin:1.3em 0 .5em;
  font-weight:700;
}
.prose h3 span{background:rgba(128,255,0,.55);padding:0 .1em}

.prose p{margin:0 0 1.05em}
.prose strong{background:rgba(0,255,0,.35);padding:0 .12em}
.prose a{color:var(--ink);background:var(--lime);text-decoration:none;border-bottom:2px solid var(--ink);padding:0 .12em}
.prose a:hover{background:var(--green)}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.35em}
.prose li{margin:.35em 0}
.prose li::marker{color:#3f7a12;font-weight:700}
.prose blockquote{
  margin:1.2em 0;
  padding:.2em 0 .2em 1em;
  border-left:7px solid var(--lime);
  font-weight:500;
}
.prose img{
  display:block;
  max-width:100%;
  margin:1.2em 0;
  border:3px solid var(--ink);
}
.prose table{width:100%;border-collapse:collapse;font-size:16px;margin:1em 0}
.prose th,.prose td{border:2px solid var(--ink);padding:8px 10px;text-align:left}
.prose th{background:rgba(128,255,0,.4)}
.prose code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  background:rgba(31,38,23,.1);
  padding:.1em .35em;
  font-size:.94em;
}
.prose pre{
  background:var(--ink);
  color:var(--lime);
  padding:14px 16px;
  overflow-x:auto;
  border:3px solid var(--ink);
  font-size:15px;
  line-height:1.6;
}
.prose pre code{background:none;padding:0;color:inherit}
.prose hr{border:0;border-top:3px dashed rgba(31,38,23,.3);margin:1.8em 0}
.prose article + article{
  margin-top:2.2em;
  border-top:3px dashed rgba(31,38,23,.28);
  padding-top:1.2em;
}

/* ---------- 侧栏 ---------- */
.side{
  position:sticky;
  top:132px;
  align-self:start;
}
.side-h{
  margin:0 0 10px;
  font-size:16px;
  letter-spacing:.18em;
  color:var(--lime);
  border-left:7px solid var(--green);
  padding-left:10px;
  line-height:1.4;
}
.side-h span{display:inline-block}
.side-nav{margin:0 0 22px}
.side-nav a{
  display:block;
  padding:11px 12px;
  min-height:44px;
  margin-bottom:8px;
  border:2px solid rgba(128,255,0,.45);
  color:#e9ffd8;
  text-decoration:none;
  font-size:16px;
  line-height:1.4;
  transition:border-color .16s ease,color .16s ease,transform .16s ease;
}
.side-nav a:hover,.side-nav a:focus-visible{
  border-color:var(--lime);
  color:var(--lime);
  transform:translateX(4px);
}
.side-top{margin:0}
.side-top a{
  display:inline-block;
  padding:11px 14px;
  min-height:44px;
  border:2px dashed var(--lime);
  color:var(--lime);
  text-decoration:none;
  font-size:16px;
}
.side-top a:hover{background:var(--lime);color:var(--ink)}

/* ---------- 页脚 ---------- */
.ft{
  margin-top:64px;
  padding:34px 18px 22px;
  background:#151a0f;
  border-top:4px solid var(--lime);
  overflow:hidden;
}
.ft-brand{
  margin:0 0 26px;
  font-size:clamp(2.2rem,12.5vw,8.5rem);
  line-height:.92;
  font-weight:700;
  letter-spacing:-.05em;
  text-align:center;
  color:var(--lime);
  transform:rotate(-1.4deg);
  opacity:.95;
}
.ft-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
  max-width:880px;
  margin:0 auto;
}
.ft dl{margin:0}
.ft dt{
  font-size:16px;
  letter-spacing:.16em;
  color:var(--green);
  border-bottom:2px solid rgba(128,255,0,.4);
  padding-bottom:6px;
  margin-bottom:8px;
  overflow-wrap:break-word;
}
.ft dd{margin:0}
.ft dd a{
  display:inline-block;
  padding:10px 0;
  min-height:42px;
  color:var(--dim);
  text-decoration:none;
  font-size:16px;
  line-height:1.4;
}
.ft dd a:hover,.ft dd a:focus-visible{color:var(--lime);text-decoration:underline;text-underline-offset:4px}
.ft-copy{
  margin:30px auto 0;
  padding-top:16px;
  max-width:880px;
  border-top:2px dashed rgba(128,255,0,.35);
  text-align:center;
  font-size:16px;
  color:#a9c58d;
}

/* ---------- 断点 ---------- */
@media (max-width:900px){
  .wrap{grid-template-columns:minmax(0,1fr)}
  .side{position:static;padding-top:8px}
}

@media (max-width:620px){
  body{font-size:16px}
  .hero{min-height:auto;padding:44px 16px 40px}
  .hero-in{align-items:flex-start}
  .hero-t{text-align:left}
  .stick i:nth-child(3){width:44px;height:44px}
  .ft-cols{grid-template-columns:minmax(0,1fr);gap:22px}
  .ft-brand{transform:none;text-align:left}
  .ft-copy{text-align:left}
  .menu p{text-align:left}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .stick i,.tape-run{animation:none}
  .menu{transition:none}
  .mark,.burger,.menu a,.side-nav a{transition:none}
}

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