@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500&family=Orbitron:wght@700;900&display=swap');

:root{
  --ink:#001e3c;
  --ink-deep:#00132a;
  --mint:#99ffcc;
  --neon:#00ff41;
  --text:#d9f7ea;
  --line:rgba(153,255,204,.24);
  --line-soft:rgba(153,255,204,.14);
  --dim:rgba(191,255,226,.66);
  --max:1080px;
  --cut:20px;
}

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

html{
  scroll-behavior:smooth;
  background:var(--ink);
  -webkit-text-size-adjust:100%;
}
html.is-locked,html.is-locked body{overflow:hidden}

body{
  margin:0;
  padding:0 0 124px;
  font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:17px;
  line-height:1.78;
  color:var(--text);
  background:
    radial-gradient(70vw 62vw at 6% 2%,rgba(0,255,65,.16),transparent 62%),
    radial-gradient(56vw 56vw at 94% 24%,rgba(153,255,204,.14),transparent 64%),
    radial-gradient(84vw 64vw at 48% 102%,rgba(0,255,65,.13),transparent 70%),
    var(--ink);
  overflow-x:hidden;
}

body::before{
  content:'';
  position:fixed;
  inset:-12vh -12vw;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(26vw 26vw at 22% 28%,rgba(0,255,65,.22),transparent 68%),
    radial-gradient(22vw 22vw at 76% 66%,rgba(153,255,204,.2),transparent 70%);
  filter:blur(34px);
  animation:breathe 16s ease-in-out infinite alternate;
}

@keyframes breathe{
  from{transform:scale(1) translateY(0);opacity:.68}
  to{transform:scale(1.14) translateY(-2.5%);opacity:1}
}

main,footer,.dock{position:relative;z-index:1}

h1,h2,h3,.dock__brand,.overlay__brand,.foot__brand{
  font-family:'Orbitron','JetBrains Mono',ui-monospace,monospace;
  font-weight:900;
  letter-spacing:.05em;
  color:#f0fff8;
}

h2{
  font-size:clamp(21px,2.6vw,28px);
  line-height:1.28;
  margin:.15em 0 .7em;
  text-shadow:0 0 18px rgba(0,255,65,.35);
}

h3{
  font-size:clamp(18px,2.1vw,21px);
  line-height:1.35;
  margin:1.1em 0 .5em;
}

p{margin:0 0 1em}
a{color:var(--mint)}
a:hover{color:var(--neon)}
img{max-width:100%;height:auto;display:block}

main a{
  text-decoration:none;
  border-bottom:1px solid rgba(0,255,65,.55);
  padding-bottom:1px;
}
main a:hover{border-bottom-color:var(--neon);text-shadow:0 0 12px rgba(0,255,65,.55)}

main ul,main ol{padding-left:1.25em;margin:0 0 1em}
main li{margin:.4em 0}
main li::marker{color:var(--neon)}

/* ===== 底部固定导航条 ===== */
.dock{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:50;
  display:grid;
  grid-template-columns:auto 1fr auto 1fr auto;
  align-items:center;
  gap:6px;
  padding:9px clamp(10px,2vw,20px);
  background:linear-gradient(180deg,rgba(0,19,42,.86),rgba(0,19,42,.98));
  border-top:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}

.dock__brand{
  justify-self:center;
  font-size:15px;
  letter-spacing:.16em;
  color:var(--mint);
  text-shadow:0 0 14px rgba(0,255,65,.7);
  white-space:nowrap;
  padding:0 6px;
}

.dock__list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  gap:2px;
  align-items:center;
}
.dock__list--left{justify-self:start}
.dock__list--right{justify-self:end}

.dock__link{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:10px 9px;
  font-size:13px;
  color:var(--dim);
  text-decoration:none;
  border-bottom:2px solid transparent;
  white-space:nowrap;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.dock__link:hover,.dock__link:focus-visible{
  color:var(--mint);
  border-bottom-color:var(--neon);
  background:rgba(0,255,65,.07);
}

.dock__contact{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:8px 14px;
  font-size:13px;
  color:var(--mint);
  text-decoration:none;
  border:1px solid rgba(0,255,65,.5);
  background:rgba(0,255,65,.07);
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  transition:background .2s ease,color .2s ease;
}
.dock__contact:hover{background:rgba(0,255,65,.2);color:#eafff4}

.dock__burger{
  width:44px;
  height:44px;
  display:grid;
  place-content:center;
  gap:5px;
  padding:0;
  background:rgba(0,255,65,.06);
  border:1px solid rgba(0,255,65,.5);
  cursor:pointer;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
}
.dock__burger span{
  display:block;
  width:20px;
  height:2px;
  background:var(--mint);
  transition:transform .25s ease,opacity .2s ease;
}
.dock__burger:hover span{background:var(--neon)}

/* ===== 全屏遮罩菜单 ===== */
.overlay{
  position:fixed;
  inset:0;
  z-index:80;
  display:flex;
  flex-direction:column;
  padding:20px clamp(16px,5vw,44px) 40px;
  background:
    radial-gradient(70vw 60vw at 80% 8%,rgba(0,255,65,.2),transparent 62%),
    rgba(0,14,30,.985);
  transform:translateY(101%);
  visibility:hidden;
  transition:transform .48s cubic-bezier(.2,.85,.2,1),visibility .48s;
  overflow-y:auto;
}
.overlay.is-open{transform:none;visibility:visible}

.overlay__top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.overlay__brand{
  font-size:16px;
  letter-spacing:.16em;
  color:var(--mint);
}
.overlay__close{
  width:44px;
  height:44px;
  font-size:24px;
  line-height:1;
  color:var(--mint);
  background:none;
  border:1px solid rgba(0,255,65,.5);
  cursor:pointer;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
}
.overlay__close:hover{color:var(--neon);background:rgba(0,255,65,.14)}

.overlay__list{
  list-style:none;
  margin:0;
  padding:10px 0 0;
  counter-reset:none;
}
.overlay__list li{border-bottom:1px dashed var(--line-soft)}
.overlay__link{
  display:flex;
  align-items:center;
  min-height:56px;
  padding:12px 4px;
  font-family:'Orbitron','JetBrains Mono',monospace;
  font-size:clamp(17px,3.4vw,22px);
  letter-spacing:.08em;
  color:#e6fff4;
  text-decoration:none;
  transition:color .18s ease,transform .18s ease,padding-left .18s ease;
}
.overlay__link:hover{color:var(--neon);padding-left:12px}

/* ===== 首屏 ===== */
.hero{
  position:relative;
  display:grid;
  grid-template-columns:1.05fr 1fr;
  align-items:center;
  gap:clamp(16px,3vw,44px);
  min-height:100svh;
  padding:clamp(22px,4vw,60px) clamp(16px,4vw,56px) clamp(28px,5vw,64px);
  max-width:1240px;
  margin:0 auto;
}

.hero__figure{
  margin:0;
  min-height:min(52vh,380px);
  border:1px solid var(--line);
  background:
    radial-gradient(60% 60% at 30% 20%,rgba(0,255,65,.2),transparent 70%),
    rgba(0,255,65,.05);
  overflow:hidden;
  clip-path:polygon(0 0,calc(100% - 28px) 0,100% 28px,100% 100%,28px 100%,0 calc(100% - 28px));
  animation:pulseCell 9s ease-in-out infinite alternate;
}
@keyframes pulseCell{
  from{box-shadow:0 0 0 rgba(0,255,65,0)}
  to{box-shadow:0 0 46px rgba(0,255,65,.22)}
}

.hero__img{
  width:100%;
  height:100%;
  min-height:inherit;
  object-fit:cover;
  filter:saturate(.86) contrast(1.06);
}

.hero__copy{text-align:right}

.hero__eyebrow{
  display:block;
  font-size:12px;
  letter-spacing:.24em;
  color:var(--neon);
  margin-bottom:.9em;
  word-break:break-word;
}

.hero h1{
  font-size:clamp(29px,5vw,54px);
  line-height:1.14;
  margin:0 0 .5em;
  text-shadow:0 0 26px rgba(0,255,65,.4),0 0 4px rgba(153,255,204,.8);
}

.hero__desc{
  color:var(--dim);
  font-size:16px;
  max-width:34em;
  margin:0 0 1.5em;
  margin-left:auto;
}

.hero__cta{
  display:inline-flex;
  align-items:center;
  min-height:48px;
  padding:12px 26px;
  font-family:'Orbitron','JetBrains Mono',monospace;
  font-size:14px;
  letter-spacing:.14em;
  color:#00182f;
  background:linear-gradient(120deg,var(--neon),var(--mint));
  text-decoration:none;
  clip-path:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,14px 100%,0 calc(100% - 14px));
  transition:transform .2s ease,box-shadow .2s ease;
}
.hero__cta:hover{
  color:#00182f;
  transform:translateY(-2px);
  box-shadow:0 10px 30px rgba(0,255,65,.35);
}

.hero__badge{
  position:absolute;
  right:clamp(16px,4vw,56px);
  bottom:clamp(16px,4vw,48px);
  display:flex;
  align-items:center;
  gap:9px;
  padding:9px 14px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--mint);
  border:1px solid rgba(0,255,65,.45);
  background:rgba(0,20,42,.72);
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}

.hero__dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--neon);
  box-shadow:0 0 12px var(--neon);
  animation:blink 2.6s ease-in-out infinite;
}
@keyframes blink{
  0%,100%{opacity:1}
  50%{opacity:.25}
}

/* ===== 正文区 ===== */
main > section:not(.hero){
  position:relative;
  max-width:var(--max);
  margin:0 auto 26px;
  padding:clamp(20px,3.2vw,34px);
  background:linear-gradient(180deg,rgba(0,30,60,.74),rgba(0,18,40,.92));
  border:1px solid var(--line);
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,0 100%);
  scroll-margin-top:26px;
  scroll-margin-bottom:140px;
  transition:border-color .25s ease,transform .25s ease;
}

main > section:not(.hero)::after{
  content:'';
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:3px;
  background:linear-gradient(90deg,var(--neon),var(--mint) 52%,transparent 88%);
  opacity:.55;
  transition:opacity .25s ease;
}

main > section:not(.hero):hover{
  border-color:rgba(0,255,65,.42);
  transform:translateY(-2px);
}
main > section:not(.hero):hover::after{opacity:1}

main small{
  display:block;
  font-size:12px;
  letter-spacing:.26em;
  color:var(--neon);
  margin-bottom:.5em;
}

main section p:last-child,main section ul:last-child,main section ol:last-child{margin-bottom:0}

main blockquote{
  margin:1.2em 0;
  padding:12px 18px;
  border-left:3px solid var(--neon);
  background:rgba(0,255,65,.06);
  color:#e8fff6;
}

main figure{
  margin:1.1em 0;
  border:1px solid var(--line-soft);
  padding:8px;
  background:rgba(0,255,65,.04);
}
main figure img{width:100%}
main figcaption{font-size:13px;color:var(--dim);padding-top:6px}

main table{
  width:100%;
  border-collapse:collapse;
  margin:1em 0;
  font-size:15px;
}
main th,main td{
  border:1px solid var(--line-soft);
  padding:9px 11px;
  text-align:left;
  vertical-align:top;
}
main th{background:rgba(0,255,65,.09);color:var(--mint)}

main code,main pre{
  font-family:'JetBrains Mono',monospace;
  background:rgba(0,255,65,.1);
  border:1px solid var(--line-soft);
}
main code{padding:1px 5px;font-size:15px}
main pre{padding:14px;overflow-x:auto;font-size:14px;line-height:1.6}

/* ===== 目录区 ===== */
.quick{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(14px,2.6vw,30px);
  align-items:start;
}

.quick__intro h2{margin-bottom:0}
.quick__aside{border-left:1px solid var(--line-soft);padding-left:clamp(14px,2.4vw,24px)}
.quick__list{list-style:none;margin:0;padding:0}
.quick__list li{border-bottom:1px dashed var(--line-soft)}
.quick__link{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:9px 2px;
  font-size:15px;
  color:var(--dim);
  text-decoration:none;
  transition:color .18s ease,padding-left .18s ease;
}
.quick__link:hover{color:var(--neon);padding-left:8px}

/* ===== 页脚 ===== */
.foot{
  max-width:var(--max);
  margin:44px auto 0;
  padding:clamp(20px,3.2vw,34px) clamp(12px,3vw,22px) 8px;
  border-top:1px solid var(--line);
}

.foot__grid{
  display:grid;
  grid-template-columns:1.2fr 1.2fr 1fr;
  gap:clamp(16px,3vw,38px);
}

.foot__brand{
  font-size:17px;
  letter-spacing:.14em;
  color:var(--mint);
  margin:0 0 .4em;
  text-shadow:0 0 16px rgba(0,255,65,.5);
}

.foot__addr{
  font-style:normal;
  font-size:13px;
  color:var(--dim);
  letter-spacing:.08em;
}

.foot__label{
  display:block;
  font-size:12px;
  letter-spacing:.22em;
  color:var(--neon);
  margin-bottom:.55em;
}

.foot__form{display:flex;flex-wrap:wrap;gap:8px}

.foot__input{
  flex:1 1 140px;
  min-height:44px;
  padding:10px 12px;
  font-family:inherit;
  font-size:15px;
  color:var(--text);
  background:rgba(0,255,65,.06);
  border:1px solid var(--line);
  border-radius:0;
}
.foot__input::placeholder{color:rgba(191,255,226,.45)}
.foot__input:focus{outline:none;border-color:var(--neon);background:rgba(0,255,65,.12)}

.foot__submit{
  min-height:44px;
  padding:10px 20px;
  font-family:'Orbitron','JetBrains Mono',monospace;
  font-size:13px;
  letter-spacing:.14em;
  color:#00182f;
  background:linear-gradient(120deg,var(--neon),var(--mint));
  border:none;
  border-radius:0;
  cursor:pointer;
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));
}

.foot__list{list-style:none;margin:0;padding:0}
.foot__list li{border-bottom:1px dashed var(--line-soft)}
.foot__link{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:9px 2px;
  font-size:14px;
  color:var(--dim);
  text-decoration:none;
}
.foot__link:hover{color:var(--neon)}

.foot__bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-top:26px;
  padding-top:14px;
  border-top:1px solid var(--line-soft);
  font-size:13px;
  color:rgba(191,255,226,.5);
}
.foot__copy{margin:0;letter-spacing:.08em}

.foot__meta{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:4px;
  margin:0;
  padding:0;
}
.foot__metaLink{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:8px 10px;
  font-size:13px;
  color:var(--dim);
  text-decoration:none;
}
.foot__metaLink:hover{color:var(--neon)}

/* ===== 断点 ===== */
@media (max-width:900px){
  .dock{grid-template-columns:auto 1fr auto}
  .dock__list{display:none}
  .overlay{padding-bottom:110px}
}

@media (max-width:760px){
  body{padding-bottom:112px}
  .hero{
    grid-template-columns:1fr;
    min-height:100svh;
    align-content:center;
    padding-top:26px;
    gap:16px;
  }
  .hero__figure{min-height:min(32svh,260px)}
  .hero__copy{text-align:right}
  .hero__badge{position:static;justify-self:end;margin-top:4px}
  .quick{grid-template-columns:1fr}
  .quick__aside{border-left:0;padding-left:0;border-top:1px solid var(--line-soft);padding-top:12px}
  .foot__grid{grid-template-columns:1fr}
  .foot__bar{justify-content:flex-start}
  main > section:not(.hero){margin-left:10px;margin-right:10px}
  .foot{margin-left:10px;margin-right:10px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  body::before,.hero__figure,.hero__dot{animation:none}
  *{transition-duration:.01ms !important}
}

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