:root{
  --green:#87ff71;
  --yellow:#ffce5c;
  --ink:#192617;
  --panel:#1f2f1c;
  --text:#e4f2df;
  --muted:rgba(228,242,223,.66);
  --line:rgba(135,255,113,.3);
  --pad:clamp(14px,4vw,32px);
}

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

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

body{
  margin:0;
  font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.7;
  color:var(--text);
  background-color:var(--ink);
  background-image:radial-gradient(rgba(135,255,113,.12) 1px,transparent 1px);
  background-size:22px 22px;
  overflow-x:hidden;
}

img{max-width:100%;display:block;height:auto}
menu{margin:0;padding:0;list-style:none}
a{color:var(--green)}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid var(--yellow);outline-offset:2px}

/* ---------- 顶部：品牌居中，菜单分列两侧 ---------- */
.site-head{
  position:sticky;
  top:0;
  z-index:80;
  display:grid;
  grid-template-columns:auto 1fr auto;
  grid-template-areas:"brand brand brand" "left search right";
  gap:8px 10px;
  padding:10px var(--pad);
  background:rgba(21,33,19,.95);
  backdrop-filter:blur(10px);
  border-bottom:3px dashed rgba(255,206,92,.55);
}
.head-left{grid-area:left;display:flex;justify-content:flex-start}
.head-right{grid-area:right;display:flex;justify-content:flex-end;gap:8px}

.brand{
  grid-area:brand;
  justify-self:center;
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  text-decoration:none;
  color:var(--green);
  font-family:"Playfair Display",Georgia,serif;
  font-size:20px;
  font-weight:700;
  letter-spacing:.04em;
}
.brand img{width:34px;height:34px;border-radius:4px;border:2px solid var(--green)}
.brand-dot{width:12px;height:12px;flex:none;background:var(--yellow);transform:rotate(45deg)}

.search{
  grid-area:search;
  display:flex;
  align-items:stretch;
  background:#12200f;
  border:2px solid var(--yellow);
  border-radius:4px;
  overflow:hidden;
}
.search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  color:var(--text);
  font:inherit;
  font-size:16px;
  padding:0 12px;
  min-height:44px;
}
.search input::placeholder{color:rgba(228,242,223,.55)}
.search button{
  border:0;
  background:var(--yellow);
  color:var(--ink);
  font:inherit;
  font-size:16px;
  font-weight:600;
  padding:0 14px;
  min-height:44px;
  cursor:pointer;
}
.search button:hover{background:var(--green)}

/* ---------- 折叠菜单 ---------- */
.menu{position:relative}
.menu summary{
  list-style:none;
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  gap:7px;
  min-height:44px;
  padding:0 13px;
  border:2px solid var(--green);
  border-radius:4px;
  background:rgba(135,255,113,.08);
  color:var(--text);
  font-size:16px;
  font-weight:500;
}
.menu summary::-webkit-details-marker{display:none}
.menu summary::after{
  content:"";
  width:0;height:0;
  border-left:5px solid transparent;
  border-right:5px solid transparent;
  border-top:6px solid var(--green);
}
.menu[open] summary{background:var(--green);color:var(--ink);border-color:var(--green)}
.menu[open] summary::after{border-top-color:var(--ink);transform:rotate(180deg)}

.menu > menu{
  position:absolute;
  top:calc(100% + 10px);
  left:0;
  z-index:90;
  display:grid;
  gap:2px;
  min-width:184px;
  max-height:70vh;
  overflow:auto;
  padding:8px;
  background:var(--panel);
  border:2px solid var(--green);
  border-radius:4px;
  box-shadow:7px 7px 0 rgba(255,206,92,.85);
}
.head-right .menu > menu{left:auto;right:0}
.menu > menu a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:0 12px;
  border-radius:4px;
  color:var(--text);
  font-size:16px;
  text-decoration:none;
}
.menu > menu a:hover{background:var(--green);color:var(--ink)}

/* ---------- 主体 ---------- */
main{
  max-width:1240px;
  margin:0 auto;
  padding:0 var(--pad) 48px;
}

.masthead{margin-inline:calc(-1 * var(--pad))}

.hero{
  position:relative;
  margin:0;
  min-height:min(68vh,560px);
  display:grid;
  place-items:center;
  overflow:hidden;
  background:linear-gradient(150deg,#26401f,#192617 66%);
  border-bottom:3px solid var(--green);
}
.hero::before{
  content:"";
  position:absolute;
  inset:-10% -6%;
  z-index:1;
  pointer-events:none;
  mix-blend-mode:screen;
  background:
    radial-gradient(circle at 15% 24%,rgba(255,206,92,.62) 0 52px,transparent 53px),
    radial-gradient(circle at 78% 16%,rgba(135,255,113,.5) 0 28px,transparent 29px),
    radial-gradient(circle at 88% 76%,rgba(255,206,92,.34) 0 86px,transparent 87px),
    repeating-linear-gradient(45deg,rgba(135,255,113,.16) 0 10px,transparent 10px 22px);
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:2;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(25,38,23,.32),rgba(25,38,23,.84));
}
.hero-img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.62;
  z-index:0;
}
.hero-band{
  position:absolute;
  left:-8%;
  right:-8%;
  bottom:-28px;
  height:66px;
  z-index:3;
  background:var(--yellow);
  opacity:.92;
  transform:rotate(-1.6deg);
  clip-path:polygon(0 42%,100% 0,100% 62%,0 100%);
}
.hero-band::after{
  content:"";
  position:absolute;
  left:-4%;
  right:-4%;
  top:22px;
  height:34px;
  background:var(--green);
  clip-path:polygon(0 40%,100% 0,100% 60%,0 100%);
}

.hero-copy{
  position:relative;
  z-index:4;
  width:100%;
  max-width:820px;
  margin:0;
  padding:38px 20px 68px;
  text-align:center;
}
.hero-copy h1{
  margin:0 0 14px;
  font-family:"Playfair Display",Georgia,serif;
  font-size:clamp(28px,6.4vw,56px);
  line-height:1.16;
  color:#fff;
  letter-spacing:.01em;
  text-shadow:0 4px 0 rgba(25,38,23,.55);
}
.hero-copy h1::after{
  content:"";
  display:block;
  width:74px;
  height:8px;
  margin:16px auto 0;
  background:var(--green);
  transform:rotate(-2deg);
}
.hero-sub{margin:0;color:rgba(255,255,255,.9);font-size:17px}

/* ---------- 正文区块 ---------- */
main > :not(.masthead):not(.rail){
  max-width:860px;
  padding-block:clamp(28px,4.5vw,52px);
  border-top:2px dashed var(--line);
  scroll-margin-top:132px;
}

main h2{
  margin:0 0 8px;
  font-family:"Playfair Display",Georgia,serif;
  font-size:clamp(23px,3.6vw,33px);
  line-height:1.28;
  color:var(--yellow);
}
main h2::before{
  content:"";
  display:inline-block;
  width:13px;
  height:13px;
  margin-right:10px;
  background:var(--green);
  transform:rotate(45deg);
}
main h3{font-size:20px;color:var(--green);margin:22px 0 8px}
main p{margin:0 0 14px}
main p.subtitle{color:var(--muted);font-size:16px;margin:0 0 18px}
main ul,main ol{margin:0 0 16px;padding-left:22px}
main li{margin-bottom:8px}
main strong{color:var(--yellow)}
main figure{margin:22px 0}
main figure img{border-radius:4px;border:2px solid var(--line)}
main blockquote{
  margin:20px 0;
  padding:12px 16px;
  border-left:5px solid var(--green);
  background:rgba(135,255,113,.07);
  color:var(--muted);
}
main table{width:100%;border-collapse:collapse;font-size:16px}
main th,main td{border:1px dashed var(--line);padding:8px 10px;text-align:left}
main a{color:var(--green);text-underline-offset:3px}
main a:hover{color:var(--yellow)}

/* ---------- 右侧栏 ---------- */
.rail{
  padding-block:clamp(26px,4.5vw,48px);
  border-top:2px dashed var(--line);
}
.rail aside{
  background:var(--panel);
  border:2px solid var(--green);
  border-radius:4px;
  padding:16px 14px;
  box-shadow:7px 7px 0 rgba(255,206,92,.85);
}
.rail h2{
  margin:0 0 4px;
  font-family:"Playfair Display",Georgia,serif;
  font-size:19px;
  color:var(--green);
}
.rail h2::before{display:none}
.rail p.subtitle{margin:0 0 12px;font-size:16px;color:var(--muted)}
.rail-menu{display:grid;gap:2px}
.rail-menu li{border-bottom:1px dashed rgba(135,255,113,.2)}
.rail-menu a{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:0 10px;
  border-radius:4px;
  color:var(--text);
  font-size:16px;
  text-decoration:none;
}
.rail-menu a:hover{background:var(--green);color:var(--ink)}

/* ---------- 页脚 ---------- */
.site-foot{
  margin-top:24px;
  border-top:3px solid var(--green);
  background:#12200f;
}
.f-cta{
  display:flex;
  justify-content:center;
  padding:clamp(26px,5vw,46px) 20px;
  background:repeating-linear-gradient(135deg,rgba(135,255,113,.1) 0 12px,transparent 12px 24px);
}
.f-cta a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-family:"Playfair Display",Georgia,serif;
  font-size:clamp(24px,5.4vw,40px);
  color:var(--yellow);
  text-decoration:none;
  border-bottom:3px dashed var(--green);
  padding-bottom:2px;
}
.f-cta a:hover{color:var(--green)}

.f-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:6px 18px;
  padding:14px 20px 30px;
  border-top:2px dashed rgba(135,255,113,.25);
}
.f-brand{font-size:16px;font-weight:600;color:var(--green)}
.f-nav menu{display:flex;flex-wrap:wrap;justify-content:center;gap:2px 14px}
.f-nav a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  color:var(--text);
  font-size:16px;
  text-decoration:none;
}
.f-nav a:hover{color:var(--yellow)}
.f-copy{flex-basis:100%;margin:0;text-align:center;font-size:16px;color:var(--muted)}

/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s cubic-bezier(.2,.7,.3,1)}
.js .reveal.in{opacity:1;transform:none}

.js .rail aside .rail-menu li{opacity:0;transform:translateX(8px);transition:opacity .4s ease,transform .4s ease}
.js .rail aside.in .rail-menu li{opacity:1;transform:none}
.js .rail aside.in .rail-menu li:nth-child(2){transition-delay:.05s}
.js .rail aside.in .rail-menu li:nth-child(3){transition-delay:.1s}
.js .rail aside.in .rail-menu li:nth-child(4){transition-delay:.15s}
.js .rail aside.in .rail-menu li:nth-child(5){transition-delay:.2s}
.js .rail aside.in .rail-menu li:nth-child(6){transition-delay:.25s}
.js .rail aside.in .rail-menu li:nth-child(7){transition-delay:.3s}

/* ---------- 断点 ---------- */
@media (min-width:900px){
  .site-head{
    grid-template-columns:1fr auto 1fr auto;
    grid-template-areas:"left brand right search";
    align-items:center;
    gap:14px;
    padding-block:12px;
  }
  .search{grid-area:search;width:230px}
  main{
    display:grid;
    grid-template-columns:minmax(0,1fr) 300px;
    column-gap:46px;
    align-items:start;
  }
  .masthead{grid-column:1 / -1}
  main > :not(.masthead):not(.rail){grid-column:1}
  .rail{
    grid-column:2;
    grid-row:2 / span 50;
    align-self:start;
    position:sticky;
    top:124px;
    border-top:0;
    padding-top:clamp(30px,5vw,54px);
  }
  .hero{min-height:min(72vh,620px)}
  .f-copy{flex-basis:auto;margin-left:auto}
  .f-row{justify-content:flex-start;padding-inline:var(--pad)}
}

@media (max-width:600px){
  .hero{min-height:58vh}
  .hero-copy{padding:30px 18px 60px}
  .brand{font-size:18px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal,.js .rail aside .rail-menu li{transition:none}
  .js .rail aside .rail-menu li{transition-delay:0s}
}

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