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

:root{
  --lime:#80ff00;
  --neon:#00ff00;
  --ink:#1f2617;
  --deep:#151d10;
  --coal:#0b1007;
  --bone:#e9ffd8;
  --line:rgba(128,255,0,.3);
  --r:4px;
  --rail:264px;
}

*,*::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(circle at 9% 5%, rgba(0,255,0,.14), transparent 40%),
    radial-gradient(circle at 93% 16%, rgba(128,255,0,.12), transparent 36%),
    radial-gradient(circle at 58% 94%, rgba(0,255,0,.08), transparent 44%);
  background-attachment:fixed;
  color:var(--bone);
  font-family:'Inter',system-ui,-apple-system,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.7;
  overflow-x:hidden;
}

img{display:block;max-width:100%;height:auto}
a{color:var(--neon)}
:focus-visible{outline:3px solid var(--neon);outline-offset:3px}

.shell{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);align-items:start}

/* ---------- 左侧固定竖排 ---------- */
.rail{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--rail);height:100vh;
  display:flex;flex-direction:column;gap:14px;
  padding:20px 16px;
  overflow-y:auto;
  background:linear-gradient(170deg,var(--deep),#101710 58%,#090e07);
  border-right:2px dashed var(--line);
  z-index:50;
}

.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px;text-decoration:none;color:var(--bone)}
.brand-mark{width:30px;height:30px;border:2px solid var(--lime);border-radius:var(--r);flex:none}
.brand-text{
  display:inline-block;max-width:9ch;
  font-size:17px;font-weight:800;line-height:1.15;letter-spacing:-.02em;
  color:var(--lime);transform:rotate(-1.5deg);
}

.rail-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.rail-nav a{
  display:flex;align-items:center;min-height:44px;
  padding:9px 15px;
  border:2px solid rgba(128,255,0,.45);border-radius:999px;
  color:var(--bone);text-decoration:none;
  font-size:16px;font-weight:600;letter-spacing:-.01em;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.rail-nav a:hover,
.rail-nav a:focus-visible{
  background:var(--lime);color:var(--ink);border-color:var(--neon);
  transform:translateX(4px) rotate(-1.4deg);
}

.contact{
  align-self:flex-start;display:inline-flex;align-items:center;min-height:44px;
  padding:9px 16px;
  border:2px dashed var(--neon);border-radius:999px;
  color:var(--neon);text-decoration:none;font-size:16px;font-weight:700;
  transition:background .18s ease,color .18s ease;
}
.contact:hover,.contact:focus-visible{background:var(--neon);color:var(--ink)}

.sticker{
  position:absolute;width:74px;height:74px;
  border:3px dashed var(--neon);border-radius:var(--r);
  background:rgba(0,255,0,.08);
  pointer-events:none;
}
.rail-sticker{position:static;width:100%;height:52px;margin-top:auto;--r:-2deg;animation:jitter 4.2s ease-in-out infinite}

@keyframes jitter{
  0%,100%{transform:rotate(var(--r,0deg)) translate3d(0,0,0)}
  33%{transform:rotate(calc(var(--r,0deg) + 3deg)) translate3d(3px,-4px,0)}
  66%{transform:rotate(calc(var(--r,0deg) - 2deg)) translate3d(-2px,3px,0)}
}

/* ---------- 主体 ---------- */
main{grid-column:2;min-width:0;padding-bottom:64px}
main div[id],.prose div[id]{scroll-margin-top:26px}

.hero{
  position:relative;min-height:70vh;
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  align-items:center;gap:28px;
  padding:60px 40px 84px;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;left:-8%;right:-8%;bottom:-40px;height:80px;
  background:var(--lime);opacity:.92;
  transform:skewY(-5deg);transform-origin:left bottom;
  z-index:0;
}
.hero-copy{position:relative;z-index:2;min-width:0}
.kicker{display:inline-block;width:60px;height:10px;margin-bottom:18px;background:var(--neon);transform:skewX(-24deg)}

h1{
  margin:0 0 18px;
  font-size:clamp(34px,5vw,62px);
  line-height:1.04;letter-spacing:-.035em;font-weight:800;
  color:#f6ffe9;
}
.lead{margin:0;max-width:44ch;color:#cfeeb6}

.hero-collage{position:relative;z-index:2;min-height:340px;align-self:stretch}
.shot{
  position:absolute;margin:0;overflow:hidden;
  border:3px solid var(--lime);border-radius:var(--r);
  background:var(--coal);
  filter:saturate(145%);
}
.shot img{width:100%;height:100%;object-fit:cover}
.shot-a{width:66%;height:66%;top:0;left:0;transform:rotate(-6deg)}
.shot-b{width:58%;height:58%;right:0;bottom:0;transform:rotate(5deg);border-color:var(--neon);mix-blend-mode:screen}
.hero-sticker{right:6%;bottom:-10px;--r:9deg;animation:jitter 3.4s ease-in-out infinite}

.band{
  overflow:hidden;
  border-top:2px solid var(--lime);border-bottom:2px solid var(--lime);
  background:var(--coal);
  padding:9px 0;
}
.band-track{display:flex;align-items:center;gap:22px;width:max-content;animation:mq 26s linear infinite}
.band-word{font-size:15px;font-weight:800;letter-spacing:.16em;color:var(--lime);white-space:nowrap}
.band-dot{flex:none;width:10px;height:10px;background:var(--neon);transform:rotate(45deg)}

@keyframes mq{
  from{transform:translate3d(0,0,0)}
  to{transform:translate3d(-50%,0,0)}
}

.wrap{max-width:948px;margin:0 auto;padding:0 30px}
.hull{padding-top:38px}

.prose{max-width:784px;margin:0}
.prose > div{position:relative;padding:34px 0 26px;border-top:2px dashed var(--line)}
.prose > div:first-child{border-top:0;padding-top:6px}
.prose > div::before{
  content:"";position:absolute;left:-20px;top:40px;
  width:9px;height:9px;background:var(--neon);transform:rotate(45deg);
}

.prose h2{
  margin:0 0 12px;
  font-size:clamp(23px,3.2vw,34px);line-height:1.18;
  letter-spacing:-.025em;font-weight:800;color:var(--lime);
}
.prose h3{
  margin:26px 0 10px;
  font-size:20px;line-height:1.3;font-weight:700;color:#d8ffb8;
  letter-spacing:-.01em;
}
.prose hr{
  border:0;height:8px;margin:0 0 22px;
  background:repeating-linear-gradient(-45deg,var(--lime) 0 6px,transparent 6px 14px);
  transform:skewX(-20deg);opacity:.55;
}
.prose p{margin:0 0 16px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:22px}
.prose li{margin:0 0 8px}
.prose li::marker{color:var(--neon)}
.prose a{
  color:var(--neon);text-decoration:underline;
  text-decoration-thickness:2px;text-underline-offset:3px;
}
.prose a:hover{background:var(--lime);color:var(--ink);text-decoration:none}
.prose strong{color:var(--lime);font-weight:700}
.prose blockquote{
  margin:0 0 18px;padding:12px 18px;
  border-left:5px solid var(--neon);border-radius:0 var(--r) var(--r) 0;
  background:rgba(0,255,0,.07);
}
.prose table{width:100%;border-collapse:collapse;margin:0 0 18px;font-size:16px}
.prose th,.prose td{border:2px solid var(--line);padding:9px 12px;text-align:left}
.prose figure{margin:0 0 18px}
.prose figcaption{font-size:15px;color:#a9c196}

.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 页脚 ---------- */
.foot{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:26px 24px;
  padding:52px 34px 30px calc(var(--rail) + 34px);
  border-top:6px solid var(--lime);
  background:var(--coal);
}
.foot-cta{margin:0;font-size:clamp(24px,3.2vw,38px);line-height:1.05;font-weight:800;letter-spacing:-.03em}
.foot-cta a{
  color:var(--lime);text-decoration:none;
  border-bottom:4px solid var(--neon);padding-bottom:3px;
  transition:background .18s ease,color .18s ease;
}
.foot-cta a:hover{background:var(--lime);color:var(--ink)}
.foot-col{margin:0;display:flex;flex-direction:column;gap:2px;font-size:16px}
.foot-col a{
  display:flex;align-items:center;min-height:40px;padding:6px 0;
  color:var(--bone);text-decoration:none;
  border-bottom:1px dashed transparent;
}
.foot-col a:hover{color:var(--lime);border-bottom-color:var(--lime)}
.foot-brand{font-weight:700;color:var(--lime);letter-spacing:.03em}
.foot small{grid-column:1 / 3;align-self:center;font-size:15px;color:#a9c196}
.foot-bottom{grid-column:3 / 5;margin:0;text-align:right}
.foot-bottom a{
  display:inline-flex;align-items:center;min-height:40px;padding:9px 16px;
  border:2px solid var(--line);border-radius:999px;
  color:var(--bone);text-decoration:none;
}
.foot-bottom a:hover{background:var(--lime);color:var(--ink);border-color:var(--lime)}

/* ---------- 断点 ---------- */
@media (max-width:980px){
  .shell{grid-template-columns:minmax(0,1fr)}
  main{grid-column:1;padding-bottom:48px}
  .rail{
    position:static;width:auto;height:auto;
    flex-direction:row;flex-wrap:wrap;align-items:center;gap:10px;
    padding:12px 16px;overflow:visible;
    border-right:0;border-bottom:2px dashed var(--line);
  }
  .rail-nav{order:3;width:100%;overflow:hidden}
  .rail-nav ul{flex-direction:row;gap:8px;overflow-x:auto;padding-bottom:2px}
  .rail-nav a{white-space:nowrap}
  .rail-nav a:hover{transform:rotate(-1.4deg)}
  .rail-sticker{display:none}

  .hero{grid-template-columns:minmax(0,1fr);min-height:0;padding:26px 20px 66px;gap:22px}
  .hero-collage{min-height:270px;order:2}
  .hero::after{height:58px;bottom:-28px}
  h1{font-size:clamp(30px,8vw,44px)}
  .wrap{padding:0 20px}
  .prose > div::before{left:-14px}

  .foot{grid-template-columns:1fr 1fr;padding:40px 20px 26px}
  .foot-cta{grid-column:1 / 3}
  .foot small{grid-column:1 / 3}
  .foot-bottom{grid-column:1 / 3;text-align:left}
}

@media (max-width:560px){
  body{font-size:16px}
  .hero{padding:20px 16px 58px}
  .hero-collage{min-height:228px}
  .shot-a{width:70%;height:64%}
  .shot-b{width:60%;height:56%}
  .wrap{padding:0 16px}
  .foot{grid-template-columns:1fr;gap:18px}
  .foot-cta,.foot small,.foot-bottom{grid-column:1}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

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