@import url('https://fonts.googleapis.com/css2?family=Calistoga:ital@0;1&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root{
  --acid:#80ff00;
  --lime:#00ff00;
  --ink:#1f2617;
  --deep:#141a10;
  --text:#e8f9d6;
  --muted:#a9c98c;
  --line:rgba(128,255,0,.30);
  --glass:rgba(128,255,0,.06);
  --rail:236px;
  --serif:Calistoga,Georgia,"Songti SC",serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

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

html{
  scroll-behavior:smooth;
  scroll-padding-top:64px;
  -webkit-text-size-adjust:100%;
  overflow-x:hidden;
}

body{
  margin:0;
  padding-left:var(--rail);
  padding-top:36px;
  max-width:100%;
  background:
    radial-gradient(760px 420px at 96% -6%, rgba(0,255,0,.18), transparent 68%),
    radial-gradient(620px 380px at -6% 96%, rgba(128,255,0,.14), transparent 66%),
    var(--ink);
  color:var(--text);
  font-family:Inter,system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.72;
  overflow-x:hidden;
  overflow-wrap:break-word;
  filter:saturate(112%);
}

img{max-width:100%;height:auto;display:block}
a{color:var(--acid)}
p{margin:0 0 1.05em}
:focus-visible{outline:3px solid var(--lime);outline-offset:2px}

/* 顶部跑马灯 */
.marquee{
  position:fixed;
  top:0;left:0;right:0;
  width:100%;
  max-width:100%;
  height:36px;
  display:flex;
  align-items:center;
  overflow:hidden;
  background:var(--acid);
  color:var(--ink);
  border-bottom:2px solid var(--ink);
  z-index:40;
}
.marquee-in{
  display:flex;
  white-space:nowrap;
  font-family:var(--serif);
  font-size:15px;
  letter-spacing:.14em;
  animation:slide 26s linear infinite;
}
.marquee-in span{padding-right:2.6rem}
@keyframes slide{
  from{transform:translateX(0)}
  to{transform:translateX(-50%)}
}

/* 左侧导航 */
.rail{
  position:fixed;
  top:36px;left:0;bottom:0;
  width:var(--rail);
  padding:22px 16px 30px;
  display:flex;
  flex-direction:column;
  gap:16px;
  overflow-y:auto;
  overflow-x:hidden;
  background:linear-gradient(180deg, rgba(0,255,0,.13), rgba(20,26,16,.9) 58%);
  border-right:2px solid var(--line);
  backdrop-filter:blur(9px);
  z-index:20;
}
.brand{
  display:block;
  padding:6px 2px;
  font-family:var(--serif);
  font-size:26px;
  line-height:1.18;
  color:var(--acid);
  text-decoration:none;
  letter-spacing:.5px;
  transform:rotate(-1.6deg);
  text-shadow:2px 2px 0 rgba(0,255,0,.35);
}
.rail-nav{display:flex;flex-direction:column}
.rail-nav a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:10px 10px;
  font-size:16px;
  font-weight:500;
  color:var(--text);
  text-decoration:none;
  border-bottom:1px dashed rgba(128,255,0,.20);
  transition:background .16s ease,color .16s ease,transform .16s ease;
}
.rail-nav a:hover,
.rail-nav a:focus-visible{
  background:var(--acid);
  color:var(--ink);
  transform:translateX(4px) rotate(-1deg);
}

/* 主栅格 */
.stream{
  display:grid;
  grid-template-columns:196px minmax(0,1fr);
  gap:26px 38px;
  align-items:start;
  max-width:1180px;
  margin:0 auto;
  padding:38px 38px 72px 24px;
}
.stream > *{
  grid-column:2;
  min-width:0;
  max-width:100%;
}
.stream > aside{grid-column:1;grid-row:1}

/* 目录侧栏 */
.toc{
  position:sticky;
  top:60px;
  padding:16px 14px;
  min-width:0;
  border:1px solid var(--line);
  border-left:5px solid var(--lime);
  border-radius:4px;
  background:var(--glass);
  backdrop-filter:blur(8px);
}
.toc-h{
  margin:0 0 8px;
  font-family:var(--serif);
  font-size:19px;
  color:var(--acid);
  letter-spacing:.04em;
}
.toc hr{
  border:0;
  border-top:2px dashed var(--line);
  margin:0 0 10px;
}
.toc-list{
  list-style:none;
  margin:0;
  padding:0;
  counter-reset:toc;
}
.toc-list li{counter-increment:toc;min-width:0}
.toc-list a{
  display:flex;
  gap:8px;
  align-items:baseline;
  min-height:40px;
  padding:7px 4px;
  font-size:16px;
  line-height:1.45;
  color:var(--muted);
  text-decoration:none;
  border-bottom:1px dotted rgba(128,255,0,.18);
  transition:color .16s ease,padding-left .16s ease;
}
.toc-list a::before{
  content:counter(toc,decimal-leading-zero);
  font-family:var(--mono);
  font-size:12px;
  color:var(--acid);
  opacity:.85;
}
.toc-list a:hover,
.toc-list a:focus-visible{color:var(--acid);padding-left:8px}

/* 头图 */
.hero{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:26px;
  min-height:70vh;
  padding:34px 32px;
  border-radius:4px;
  background:linear-gradient(135deg, var(--acid), #b8ff54 58%, var(--lime));
  color:var(--ink);
  transform:rotate(-.55deg);
  box-shadow:10px 10px 0 rgba(0,255,0,.28);
  overflow:hidden;
}
.hero-copy{position:relative;z-index:2;text-align:right;max-width:34ch;min-width:0}
.hero h1{
  margin:0 0 14px;
  font-family:var(--serif);
  font-size:clamp(30px,4.6vw,58px);
  line-height:1.06;
  letter-spacing:-.015em;
  color:var(--ink);
  overflow-wrap:break-word;
}
.hero-desc{
  margin:0;
  font-size:17px;
  line-height:1.62;
  font-weight:500;
  color:#25301a;
}
.hero-fig{position:relative;z-index:1;margin:0;flex:0 0 auto;max-width:100%}
.hero-fig img{
  width:178px;
  max-width:100%;
  border:3px solid var(--ink);
  border-radius:4px;
  transform:rotate(5deg);
  box-shadow:7px 7px 0 rgba(31,38,23,.35);
}
.sticker{
  width:118px;
  height:118px;
  display:grid;
  place-items:center;
  font-family:var(--serif);
  font-size:56px;
  color:var(--acid);
  background:var(--ink);
  border-radius:50%;
  transform:rotate(8deg);
  box-shadow:0 0 0 7px rgba(31,38,23,.22);
  animation:jitter 3.4s ease-in-out infinite;
}
@keyframes jitter{
  0%,100%{transform:rotate(8deg) translate(0,0)}
  50%{transform:rotate(4deg) translate(2px,-4px)}
}

/* 正文块 */
.stream > section:not(.hero){
  position:relative;
  min-width:0;
  max-width:100%;
  padding:30px 32px 34px;
  border:1px solid var(--line);
  border-left:6px solid rgba(128,255,0,.55);
  border-radius:4px;
  background:var(--glass);
  backdrop-filter:blur(10px);
  scroll-margin-top:64px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.stream > section:not(.hero):hover{
  border-color:rgba(128,255,0,.7);
  box-shadow:0 0 0 3px rgba(0,255,0,.10);
}
.stream > section:not(.hero) + section{margin-top:0}

.stream h2{
  margin:0 0 6px;
  font-family:var(--serif);
  font-size:clamp(24px,2.9vw,36px);
  line-height:1.16;
  letter-spacing:-.01em;
  color:var(--acid);
  overflow-wrap:break-word;
}
.stream h3{
  margin:1.5em 0 .4em;
  font-family:var(--serif);
  font-size:21px;
  line-height:1.3;
  color:var(--lime);
  overflow-wrap:break-word;
}
.stream hr{
  border:0;
  border-top:3px dashed var(--line);
  margin:0 0 18px;
}
.stream p{max-width:64ch}
.stream ul,.stream ol{padding-left:1.35em;margin:0 0 1.1em;max-width:64ch}
.stream li{margin:.34em 0;overflow-wrap:break-word}
.stream li::marker{color:var(--acid)}
.stream blockquote{
  margin:1.2em 0;
  padding:14px 18px;
  border-left:6px solid var(--lime);
  border-radius:4px;
  background:rgba(0,255,0,.07);
  color:var(--text);
  max-width:100%;
}
.stream blockquote p:last-child{margin:0}
.stream strong{color:#fff;background:rgba(128,255,0,.16);padding:0 .2em;border-radius:2px}
.stream a{
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:2px;
  overflow-wrap:anywhere;
}
.stream a:hover{color:var(--lime);background:rgba(0,255,0,.12)}
.stream figure{
  margin:1.3em 0;
  max-width:100%;
  transform:rotate(-.7deg);
}
.stream figure img{border:2px solid var(--line);border-radius:4px}
.stream figcaption{
  font-size:16px;
  color:var(--muted);
  padding-top:8px;
}
.stream table{
  width:100%;
  max-width:100%;
  table-layout:fixed;
  border-collapse:collapse;
  margin:1.2em 0;
  font-size:16px;
}
.stream th,.stream td{
  border:1px solid var(--line);
  padding:9px 11px;
  text-align:left;
  overflow-wrap:break-word;
}
.stream th{background:rgba(128,255,0,.12);color:var(--acid)}
.stream code{
  font-family:var(--mono);
  font-size:.92em;
  background:rgba(0,0,0,.34);
  padding:.1em .38em;
  border-radius:3px;
  overflow-wrap:anywhere;
}
.stream pre{
  max-width:100%;
  overflow-x:auto;
  padding:14px 16px;
  border:1px solid var(--line);
  border-radius:4px;
  background:rgba(0,0,0,.4);
}
.stream pre code{background:none;padding:0}

/* 页脚 */
.foot{
  display:grid;
  grid-template-columns:1.25fr 1fr 1fr;
  gap:26px 30px;
  align-items:start;
  padding:44px 36px 26px;
  border-top:3px solid var(--acid);
  background:linear-gradient(180deg, rgba(0,255,0,.13), rgba(20,26,16,.96) 62%);
}
.foot > section{min-width:0;max-width:100%}
.foot h2{
  margin:0 0 6px;
  font-family:var(--serif);
  font-size:20px;
  color:var(--acid);
  letter-spacing:.03em;
}
.foot hr{
  border:0;
  border-top:2px dashed var(--line);
  margin:0 0 4px;
}
.foot-brand{grid-column:1;grid-row:1/span 2}
.foot-brand .brand{font-size:24px}
.foot-desc{margin:12px 0 0;font-size:16px;color:var(--muted);max-width:34ch}
.foot-nav{grid-column:2/span 2;grid-row:1}
.foot-sub{grid-column:2/span 2;grid-row:2}
.foot-legal{grid-column:1/-1;grid-row:3}

.foot-nav dl{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(142px,1fr));
  gap:6px 10px;
  margin:12px 0 0;
}
.foot-nav dt,.foot-nav dd{margin:0;min-width:0}
.foot-nav a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:7px 11px;
  font-size:16px;
  color:var(--text);
  text-decoration:none;
  border:1px solid rgba(128,255,0,.24);
  border-radius:4px;
  transition:background .16s ease,color .16s ease,transform .16s ease;
}
.foot-nav a:hover,
.foot-nav a:focus-visible{
  background:var(--acid);
  color:var(--ink);
  border-color:var(--acid);
  transform:rotate(-1.2deg);
}

.sub-form{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin:12px 0 0;
  min-width:0;
}
.sub-form label{font-weight:600;color:var(--muted)}
.sub-form input{
  flex:1 1 170px;
  min-width:0;
  max-width:100%;
  min-height:44px;
  padding:10px 12px;
  font-family:inherit;
  font-size:16px;
  color:var(--text);
  background:rgba(0,0,0,.3);
  border:2px solid var(--line);
  border-radius:4px;
}
.sub-form input::placeholder{color:var(--muted)}
.sub-form button{
  min-height:44px;
  padding:10px 22px;
  font-family:inherit;
  font-size:16px;
  font-weight:700;
  color:var(--ink);
  background:var(--acid);
  border:0;
  border-radius:4px;
  cursor:pointer;
  transition:background .16s ease,transform .16s ease;
}
.sub-form button:hover{background:var(--lime);transform:rotate(-1.6deg)}

.foot-legal p{
  margin:0;
  padding-top:14px;
  border-top:1px dashed var(--line);
  font-size:16px;
  color:var(--muted);
}

/* 入场微动效 */
@media (prefers-reduced-motion: no-preference){
  .stream > section:not(.hero){
    opacity:0;
    transform:translateY(14px);
    animation:rise .58s ease forwards;
  }
  .stream > section:nth-of-type(2){animation-delay:.05s}
  .stream > section:nth-of-type(3){animation-delay:.10s}
  .stream > section:nth-of-type(4){animation-delay:.15s}
  .stream > section:nth-of-type(5){animation-delay:.20s}
  .stream > section:nth-of-type(6){animation-delay:.25s}
  .stream > section:nth-of-type(7){animation-delay:.30s}
  .stream > section:nth-of-type(8){animation-delay:.35s}
  @keyframes rise{
    to{opacity:1;transform:translateY(0)}
  }
}
@media (prefers-reduced-motion: reduce){
  .marquee-in,.sticker{animation:none}
  html{scroll-behavior:auto}
}

/* 窄屏 */
@media (max-width:880px){
  body{padding-left:0;padding-top:30px;font-size:16px;width:100%;max-width:100%}
  .marquee{height:30px}
  .marquee-in{font-size:13px}

  .rail{
    position:static;
    width:auto;
    max-width:100%;
    padding:14px 16px 16px;
    gap:10px;
    border-right:0;
    border-bottom:2px solid var(--line);
    overflow:visible;
  }
  .brand{font-size:24px}
  .rail-nav{flex-direction:row;flex-wrap:wrap;gap:6px;min-width:0}
  .rail-nav a{padding:9px 11px;border:1px solid var(--line);border-radius:4px;min-width:0}

  .stream{
    display:flex;
    flex-direction:column;
    gap:18px;
    width:100%;
    max-width:100%;
    padding:22px 16px 52px;
  }
  .stream > *{min-width:0;max-width:100%}
  .stream > .hero{order:0}
  .stream > aside{order:1;position:static}
  .stream > section:not(.hero){order:2;padding:22px 18px 26px;border-left-width:5px}

  .hero{
    min-height:0;
    flex-direction:column;
    align-items:flex-end;
    gap:18px;
    padding:26px 20px;
    transform:none;
    box-shadow:6px 6px 0 rgba(0,255,0,.26);
  }
  .hero-copy{max-width:100%;text-align:right}
  .hero-fig img{width:128px}
  .sticker{width:88px;height:88px;font-size:42px}
  .hero h1{font-size:clamp(28px,8vw,40px)}

  .toc{padding:14px;max-width:100%;overflow:hidden}
  .toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;max-width:100%}
  .toc-list li{flex:0 0 auto}
  .toc-list a{
    border:1px solid var(--line);
    border-radius:4px;
    padding:8px 12px;
    min-height:44px;
    align-items:center;
    white-space:nowrap;
  }
  .toc-list a::before{font-size:11px}

  .stream h2{font-size:clamp(22px,6vw,30px)}
  .stream p,.stream ul,.stream ol,.stream blockquote,.stream figure{max-width:100%}
  .stream table{table-layout:fixed;width:100%;max-width:100%;font-size:15px}
  .stream th,.stream td{padding:7px 8px;overflow-wrap:break-word}
  .stream pre{max-width:100%}
  .stream img{max-width:100%;height:auto}

  .foot{
    grid-template-columns:1fr;
    gap:20px;
    padding:32px 16px 22px;
    max-width:100%;
  }
  .foot-brand,.foot-nav,.foot-sub,.foot-legal{grid-column:1;grid-row:auto}
  .foot-legal{margin-top:4px}
  .foot-nav dl{grid-template-columns:repeat(auto-fill,minmax(132px,1fr))}
  .sub-form input{flex:1 1 100%}
  .sub-form button{flex:1 1 100%}
}

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