@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root{
  --lime:#80ff00;
  --neon:#00ff00;
  --ink:#1f2617;
  --paper:#f2ffe6;
  --line:#c8e6a0;
  --r:28px;
}

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

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

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Plus Jakarta Sans',system-ui,-apple-system,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.7;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.5;
  mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.28'/%3E%3C/svg%3E");
}

img{max-width:100%;height:auto}
a{color:inherit}
.vh{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}

.shell{
  display:grid;
  grid-template-columns:184px minmax(0,1fr);
  min-height:100vh;
  position:relative;
  z-index:1;
}

/* ---------- 左侧固定竖排导航 ---------- */
.rail{
  align-self:start;
  position:sticky;
  top:0;
  height:100vh;
  overflow-y:auto;
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:18px 14px 22px;
  background:var(--ink);
  color:var(--lime);
  border-right:4px solid var(--ink);
  z-index:4;
}
.rail-top{flex:1 1 auto;display:flex;flex-direction:column;gap:9px}
.rail-bot{flex:1 1 auto;display:flex;flex-direction:column;justify-content:flex-end;gap:9px}
.rail-mid{
  margin:auto 0;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
}

.pill{
  display:block;
  padding:9px 12px;
  border:2px solid var(--lime);
  border-radius:999px;
  color:var(--lime);
  text-decoration:none;
  font-size:15px;
  font-weight:700;
  line-height:1.5;
  text-align:center;
  transition:background .16s ease,color .16s ease,transform .16s ease;
}
.pill:nth-child(odd){transform:rotate(-1.6deg)}
.pill:nth-child(even){transform:rotate(1.3deg)}
.pill:hover,.pill:focus-visible{background:var(--lime);color:var(--ink);transform:rotate(0deg)}

.brand{display:inline-flex;align-items:center;justify-content:center;text-decoration:none}
.brand-txt{
  display:inline-block;
  padding:8px 13px;
  background:var(--lime);
  color:var(--ink);
  border-radius:14px;
  font-weight:800;
  font-size:16px;
  line-height:1.4;
  transform:rotate(-3deg);
}
.brand-img{
  display:block;
  width:42px;
  height:42px;
  border-radius:12px;
  border:2px solid var(--lime);
  background:var(--lime);
}

.search{width:100%}
.search input{
  width:100%;
  padding:9px 11px;
  font:inherit;
  font-size:15px;
  line-height:1.5;
  color:var(--lime);
  background:transparent;
  border:2px dashed rgba(128,255,0,.6);
  border-radius:999px;
  outline:none;
}
.search input::placeholder{color:rgba(128,255,0,.7)}
.search input:focus{border-style:solid;border-color:var(--lime)}

/* ---------- 主体 ---------- */
main{
  position:relative;
  z-index:1;
  padding:28px clamp(14px,3vw,46px) 64px;
}

.wrap{
  display:grid;
  grid-template-columns:190px minmax(0,1fr);
  gap:clamp(18px,2.6vw,40px);
  align-items:start;
  max-width:1180px;
}

/* ---------- 左侧便签 ---------- */
.side{
  grid-row:1 / span 2;
  align-self:start;
  position:sticky;
  top:28px;
  padding:16px 14px 18px;
  background:var(--lime);
  border:4px solid var(--ink);
  border-radius:var(--r);
  transform:rotate(-1.5deg);
  box-shadow:7px 7px 0 var(--ink);
}
.side h2{
  font-size:21px;
  line-height:1.25;
  margin:2px 0 13px;
  letter-spacing:-.01em;
}
.side-links{display:flex;flex-direction:column;gap:9px}
.side-links .pill{
  border-color:var(--ink);
  color:var(--ink);
  background:var(--paper);
  font-size:15px;
  transform:none;
}
.side-links .pill:hover{background:var(--ink);color:var(--lime)}

/* ---------- 首屏 ---------- */
.hero{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.06fr);
  gap:clamp(16px,3vw,42px);
  align-items:center;
  min-height:70vh;
  padding-bottom:14px;
}
.hero-media{position:relative}
.hero-img{
  display:block;
  width:100%;
  border:4px solid var(--ink);
  border-radius:var(--r);
  transform:rotate(-2deg);
  filter:saturate(150%);
}
.hero-ph{
  aspect-ratio:4 / 5;
  display:flex;
  align-items:center;
  justify-content:center;
  border:4px solid var(--ink);
  border-radius:var(--r);
  background:
    repeating-linear-gradient(135deg,rgba(31,38,23,.12) 0 12px,transparent 12px 24px),
    var(--lime);
  transform:rotate(-2deg);
}
.hero-ph b{
  font-size:clamp(64px,14vw,132px);
  line-height:1;
  font-weight:800;
  color:var(--ink);
}

.hero-text{position:relative;text-align:right}
.badge{
  position:absolute;
  top:-16px;
  right:2px;
  display:inline-block;
  padding:6px 14px;
  background:var(--neon);
  border:3px solid var(--ink);
  border-radius:999px;
  font-size:15px;
  font-weight:800;
  line-height:1.5;
  animation:jitter 5s ease-in-out infinite;
}
@keyframes jitter{
  0%,100%{transform:rotate(-6deg)}
  50%{transform:rotate(-1deg) translateY(-4px)}
}
h1{
  margin:0 0 16px;
  font-size:clamp(32px,5vw,66px);
  line-height:1.1;
  font-weight:800;
  letter-spacing:-.035em;
  text-wrap:balance;
}
.lede{
  margin:0 0 22px;
  font-size:17px;
  line-height:1.75;
  color:#334022;
}
.cta{
  display:inline-block;
  padding:12px 26px;
  background:var(--ink);
  color:var(--lime);
  border:3px solid var(--ink);
  border-radius:999px;
  font-weight:800;
  font-size:16px;
  line-height:1.5;
  text-decoration:none;
  transform:rotate(1.5deg);
}
.cta:hover{background:var(--lime);color:var(--ink)}

/* ---------- 正文纸片 ---------- */
.paper{
  background:#fff;
  border:4px solid var(--ink);
  border-radius:var(--r);
  padding:clamp(18px,3vw,46px);
}
.prose{max-width:70ch}
.prose small{
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.2em;
  color:#5c7a36;
  margin-bottom:6px;
}
.prose h2{
  font-size:clamp(23px,3vw,34px);
  line-height:1.22;
  letter-spacing:-.02em;
  margin:0 0 14px;
}
.prose h3{font-size:20px;line-height:1.35;margin:22px 0 10px}
.prose p{margin:0 0 1.05em;font-size:17px;line-height:1.85;color:#252d1b}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.05em}
.prose li{margin-bottom:.45em;line-height:1.8}
.prose a{
  color:var(--ink);
  text-decoration:none;
  background:linear-gradient(transparent 62%,var(--lime) 62%);
  padding:0 1px;
}
.prose a:hover{background:var(--lime)}
.prose img{
  display:block;
  margin:18px 0;
  border:3px solid var(--ink);
  border-radius:20px;
}
.prose div{
  margin-top:28px;
  padding-top:24px;
  border-top:3px dashed var(--line);
  scroll-margin-top:120px;
  animation:rise .55s ease both;
}
.prose div:first-child{margin-top:0;padding-top:0;border-top:0}
.prose div:nth-child(2){animation-delay:.06s}
.prose div:nth-child(3){animation-delay:.12s}
.prose div:nth-child(4){animation-delay:.18s}
.prose div:nth-child(5){animation-delay:.24s}
.prose div:nth-child(6){animation-delay:.3s}
.prose div:nth-child(7){animation-delay:.36s}
@keyframes rise{
  from{opacity:0;transform:translateY(16px)}
  to{opacity:1;transform:none}
}

/* ---------- 页脚 ---------- */
footer{
  position:relative;
  z-index:1;
  margin-top:44px;
  background:var(--ink);
  color:var(--paper);
  border-top:4px solid var(--ink);
}
.marquee{
  overflow:hidden;
  border-bottom:3px solid var(--lime);
  background:var(--lime);
  color:var(--ink);
}
.marquee-track{display:flex;width:max-content;animation:slide 26s linear infinite}
.marquee-track span{
  display:flex;
  align-items:center;
  gap:20px;
  padding:2px 20px;
  font-size:clamp(30px,6vw,62px);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.03em;
}
.marquee-track i{font-style:normal;font-size:.55em;opacity:.75}
@keyframes slide{
  from{transform:translateX(0)}
  to{transform:translateX(-50%)}
}

.foot-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 18px;
  padding:16px clamp(14px,3vw,40px);
}
.foot-brand .brand-txt{font-size:15px;transform:rotate(-2deg)}
.foot-nav dl{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:2px 12px;
  margin:0;
}
.foot-nav dt{font-size:12px;font-weight:700;color:var(--lime);letter-spacing:.1em}
.foot-nav dd{margin:0}
.foot-nav dd a{
  display:inline-block;
  padding:10px 4px;
  color:var(--paper);
  font-size:15px;
  line-height:1.5;
  text-decoration:none;
}
.foot-nav dd a:hover{color:var(--lime);text-decoration:underline}
.foot-copy{
  display:flex;
  align-items:center;
  gap:14px;
  font-size:14px;
  color:#cfe0bb;
}
.totop{
  display:inline-block;
  padding:10px 8px;
  color:var(--lime);
  font-size:15px;
  line-height:1.5;
  text-decoration:none;
}

/* ---------- 窄屏 ---------- */
@media (max-width:900px){
  .shell{grid-template-columns:minmax(0,1fr)}
  .rail{
    align-self:stretch;
    position:sticky;
    top:0;
    height:auto;
    overflow:visible;
    padding:10px 12px 12px;
    gap:8px;
    border-right:0;
    border-bottom:4px solid var(--ink);
  }
  .rail-mid{
    order:0;
    margin:0;
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    width:100%;
    gap:10px;
  }
  .rail-top,.rail-bot{
    order:1;
    flex:0 0 auto;
    flex-direction:row;
    justify-content:flex-start;
    gap:8px;
    overflow-x:auto;
    padding-bottom:2px;
  }
  .rail-bot{order:2}
  .rail-top .pill,.rail-bot .pill{flex:0 0 auto;white-space:nowrap}
  .search{flex:1 1 auto;max-width:180px}

  main{padding:16px 14px 44px}
  .wrap{grid-template-columns:minmax(0,1fr);gap:18px}
  .side{grid-row:auto;position:static;transform:none;box-shadow:5px 5px 0 var(--ink)}
  .side-links{flex-direction:row;flex-wrap:wrap}
  .side-links .pill{flex:1 1 auto}

  .hero{grid-template-columns:minmax(0,1fr);min-height:0;gap:22px}
  .hero-text{order:-1;text-align:left}
  .badge{position:static;display:inline-block;margin-bottom:10px}
  .hero-img,.hero-ph{transform:rotate(-1.2deg)}
  .hero-ph{aspect-ratio:16 / 11}
  h1{font-size:clamp(30px,8vw,44px)}
  .prose div{scroll-margin-top:150px}
}

@media (max-width:420px){
  .prose{max-width:none}
  .foot-line{flex-direction:column;align-items:flex-start}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none !important;transition:none !important}
}

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