:root{
  --lime:#87ff71;
  --sun:#ffce5c;
  --ink:#192617;
  --paper:#f3f6ea;
  --sheet:#ffffff;
  --r:4px;
  --shadow:6px 6px 0 var(--ink);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'Outfit','Work Sans',-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(25,38,23,.17) 1.2px,transparent 1.2px);
  background-size:20px 20px;
}
:focus-visible{outline:3px solid var(--sun);outline-offset:3px;border-radius:3px}
.masthead,.hero,.main,.foot{position:relative;z-index:1}

/* ---------- 顶栏 ---------- */
.masthead{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--lime);
  border-bottom:3px solid var(--ink);
}
.masthead__inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:12px;
  max-width:1320px;
  margin:0 auto;
  padding:10px 18px;
}
.masthead__wing{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.masthead__wing--right{justify-content:flex-end}
.pill{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:8px 14px;
  border:2px solid var(--ink);
  border-radius:999px;
  background:#fff;
  color:var(--ink);
  font-size:16px;
  font-weight:600;
  text-decoration:none;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease;
}
.pill:hover{background:var(--sun);transform:rotate(-2.5deg) translateY(-2px);box-shadow:3px 3px 0 var(--ink)}
.pill--cta{background:var(--sun);font-weight:700;box-shadow:3px 3px 0 var(--ink)}
.pill--cta:hover{background:var(--lime)}
.brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 10px;
  color:var(--ink);
  font-size:22px;
  font-weight:700;
  letter-spacing:.02em;
  text-decoration:none;
  transform:rotate(-1.5deg);
}
.brand__logo{width:30px;height:30px;object-fit:contain;display:block}
.brand__name{border-bottom:3px solid var(--ink);line-height:1.2}
.burger{
  display:none;
  width:46px;
  height:46px;
  padding:0;
  border:2px solid var(--ink);
  border-radius:12px;
  background:var(--sun);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.burger span{display:block;width:20px;height:3px;background:var(--ink);border-radius:2px}
.drawer{display:none}
.drawer__link{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:10px 14px;
  border:2px solid var(--ink);
  border-radius:999px;
  background:#fff;
  color:var(--ink);
  font-weight:600;
  text-decoration:none;
}

/* ---------- hero ---------- */
.hero{
  isolation:isolate;
  overflow:hidden;
  display:flex;
  align-items:flex-end;
  min-height:45vh;
  background:var(--ink);
  border-bottom:4px solid var(--ink);
}
.hero__media{position:absolute;inset:0;z-index:-2}
.hero__media img{width:100%;height:100%;object-fit:cover;display:block;opacity:.6;filter:saturate(1.15)}
.hero__dots{
  position:absolute;
  inset:0;
  z-index:-1;
  background-image:radial-gradient(rgba(135,255,113,.6) 1.5px,transparent 1.5px);
  background-size:18px 18px;
  mix-blend-mode:screen;
  opacity:.5;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:linear-gradient(100deg,rgba(25,38,23,.94) 0%,rgba(25,38,23,.62) 55%,rgba(25,38,23,.14) 100%);
}
.hero__squiggle{
  position:absolute;
  right:6%;
  top:13%;
  width:150px;
  height:auto;
  z-index:2;
  color:var(--sun);
  transform:rotate(-6deg);
}
.hero__inner{
  position:relative;
  z-index:2;
  width:100%;
  max-width:1320px;
  margin:0 auto;
  padding:34px 18px 32px;
}
.hero__title{
  margin:0;
  max-width:20ch;
  padding-left:16px;
  border-left:8px solid var(--sun);
  color:#fff;
  font-size:clamp(2rem,5.4vw,3.55rem);
  line-height:1.06;
  letter-spacing:-.02em;
  text-shadow:3px 3px 0 rgba(25,38,23,.8);
}

/* ---------- 主体 ---------- */
.wrap{
  display:grid;
  grid-template-columns:248px minmax(0,1fr);
  gap:28px;
  align-items:start;
  max-width:1320px;
  margin:0 auto;
  padding:34px 18px 70px;
}
.rail{
  position:sticky;
  top:96px;
  padding:14px;
  border:3px solid var(--ink);
  border-radius:var(--r);
  background:var(--lime);
  box-shadow:var(--shadow);
  transform:rotate(-.7deg);
}
.rail__title{margin:0 0 12px;font-size:14px;font-weight:700;letter-spacing:.22em}
.rail__title span{display:inline-block;padding:2px 8px;border-radius:2px;background:var(--sun)}
.rail__list{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.rail__list a{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:8px 12px;
  border:2px solid var(--ink);
  border-radius:var(--r);
  background:#fff;
  color:var(--ink);
  font-size:16px;
  font-weight:600;
  text-decoration:none;
  transition:transform .16s ease,background .16s ease;
}
.rail__list a:hover{background:var(--sun);transform:translateX(4px)}
.rail__dot{
  display:block;
  height:10px;
  margin-top:14px;
  background-image:radial-gradient(var(--ink) 2px,transparent 2px);
  background-size:10px 10px;
}
.sheet{
  position:relative;
  padding:26px 26px 34px;
  border-radius:var(--r);
  background:var(--sheet);
}
.sheet::before{
  content:"";
  position:absolute;
  top:-12px;
  right:22px;
  width:54px;
  height:44px;
  background:var(--sun);
  clip-path:polygon(50% 0,100% 100%,0 100%);
  transform:rotate(8deg);
}

/* ---------- 正文 ---------- */
.prose{font-size:17px}
.prose>*:first-child{margin-top:0}
.prose [id]{scroll-margin-top:96px}
.prose div{
  padding-top:28px;
  margin-top:34px;
  border-top:2px dashed rgba(25,38,23,.32);
}
.prose div:first-child{padding-top:0;margin-top:0;border-top:0}
.prose h2{
  margin:0 0 14px;
  font-size:clamp(1.35rem,2.6vw,1.8rem);
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.01em;
}
.prose h2 span{background:linear-gradient(transparent 62%,var(--sun) 62%);padding:0 2px;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.prose h3{margin:26px 0 10px;font-size:1.15rem;font-weight:700;line-height:1.35}
.prose h3 span{background:linear-gradient(transparent 62%,var(--lime) 62%);padding:0 2px;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.prose h2:has(span)::before{
  content:"";
  display:inline-block;
  width:12px;
  height:12px;
  margin-right:10px;
  background:var(--lime);
  border:2px solid var(--ink);
  border-radius:50%;
  vertical-align:1px;
}
.prose p{margin:0 0 16px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:22px}
.prose li{margin:6px 0}
.prose a{color:#0f5a2b;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;text-decoration-color:var(--sun)}
.prose a:hover{background:var(--sun)}
.prose strong{background:linear-gradient(transparent 60%,var(--lime) 60%)}
.prose blockquote{
  margin:0 0 18px;
  padding:14px 18px;
  border-left:6px solid var(--lime);
  border-radius:0 var(--r) var(--r) 0;
  background:var(--paper);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{display:block;max-width:100%;height:auto;margin:0 0 16px;border-radius:var(--r)}
.prose figure{margin:0 0 18px}
.prose figcaption{font-size:16px;color:#41543a}
.prose table{display:block;width:100%;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:0 0 18px;font-size:16px}
.prose th,.prose td{padding:8px 10px;border:1px dashed rgba(25,38,23,.38);text-align:left}
.prose th{background:var(--lime)}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.94em;padding:1px 5px;border-radius:3px;background:var(--paper)}
.prose hr{margin:26px 0;border:0;border-top:3px dotted var(--ink)}

/* ---------- 页脚 ---------- */
.foot{
  margin-top:16px;
  border-top:10px solid var(--lime);
  background:var(--ink);
  color:#e9f5d9;
}
.foot__top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:28px;
  max-width:1320px;
  margin:0 auto;
  padding:44px 18px 26px;
}
.foot__brand{margin:0 0 10px;font-size:22px;font-weight:700;color:var(--lime);letter-spacing:.02em}
.foot__desc{margin:0;max-width:34ch;font-size:16px;line-height:1.75;color:#cfe3bf}
.foot__h{margin:0 0 14px;font-size:14px;font-weight:700;letter-spacing:.22em;color:var(--sun)}
.foot__h span{display:inline-block;padding-bottom:3px;border-bottom:3px solid var(--lime)}
.foot__links{list-style:none;margin:0;padding:0}
.foot__links a{display:flex;align-items:center;min-height:40px;color:#e9f5d9;font-size:16px;text-decoration:none}
.foot__links a:hover{color:var(--sun);text-decoration:underline;text-underline-offset:3px}
.foot__addr{display:grid;gap:8px;font-style:normal;font-size:16px;color:#cfe3bf}
.sub{display:grid;gap:8px}
.sub__input{
  min-height:44px;
  padding:10px 12px;
  border:2px solid var(--lime);
  border-radius:var(--r);
  background:#0d1609;
  color:#eaf7dd;
  font:inherit;
  font-size:16px;
}
.sub__input::placeholder{color:#93a888}
.sub__btn{
  min-height:44px;
  padding:10px 16px;
  border:0;
  border-radius:999px;
  background:var(--lime);
  color:var(--ink);
  font:inherit;
  font-size:16px;
  font-weight:700;
  cursor:pointer;
  transition:transform .16s ease,background .16s ease;
}
.sub__btn:hover{background:var(--sun);transform:rotate(-2deg)}
.foot__bar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  align-items:center;
  justify-content:space-between;
  max-width:1320px;
  margin:0 auto;
  padding:16px 18px 28px;
  border-top:2px dashed rgba(135,255,113,.35);
}
.foot__copy{margin:0;font-size:16px;color:#a9c199}
.foot__top-link{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:6px 14px;
  border:2px solid var(--lime);
  border-radius:999px;
  color:var(--lime);
  font-size:16px;
  font-weight:600;
  text-decoration:none;
}
.foot__top-link:hover{background:var(--lime);color:var(--ink)}

/* ---------- 滚动显现 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 断点 ---------- */
@media (max-width:1080px){
  .masthead__inner{display:flex;justify-content:center;position:relative;padding:10px 18px}
  .masthead__wing{display:none}
  .burger{display:inline-flex;position:absolute;right:14px;top:50%;transform:translateY(-50%)}
  .drawer{padding:10px 18px 16px;border-top:2px dashed var(--ink);background:var(--lime)}
  .drawer.is-open{display:grid;grid-template-columns:1fr 1fr;gap:8px}
}
@media (max-width:900px){
  .wrap{grid-template-columns:minmax(0,1fr);gap:20px;padding:26px 16px 56px}
  .rail{position:static;transform:none;box-shadow:4px 4px 0 var(--ink)}
  .rail__list{grid-template-columns:repeat(auto-fill,minmax(122px,1fr))}
  .rail__dot{display:none}
  .hero__squiggle{display:none}
  .foot__top{grid-template-columns:1fr 1fr;gap:24px;padding:34px 16px 22px}
  .foot__col--brand{grid-column:1 / -1}
  .foot__bar{padding:16px 16px 26px}
}
@media (max-width:620px){
  body{font-size:16px}
  .prose{font-size:16px}
  .hero{min-height:0}
  .hero__inner{padding:26px 16px 24px}
  .hero__title{padding-left:12px;border-left-width:6px}
  .sheet{padding:20px 16px 28px}
  .sheet::before{right:14px;width:44px;height:36px}
  .foot__top{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .pill:hover,.rail__list a:hover,.sub__btn:hover{transform:none}
}

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