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

:root{
  --g:#00ff80;
  --b:#0000ff;
  --ink:#e9fff5;
  --dim:#7fdcb4;
  --line:rgba(0,255,128,.36);
  --glass:rgba(0,255,128,.06);
  --bar:64px;
  --dock:64px;
}

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

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

body{
  margin:0;
  background-color:#000;
  background-image:radial-gradient(rgba(0,255,128,.10) 1px,transparent 1px);
  background-size:22px 22px;
  color:var(--ink);
  font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:17px;
  line-height:1.7;
  letter-spacing:.01em;
  overflow-x:hidden;
  padding-bottom:calc(var(--dock) + 16px);
}

h1,h2,h3{
  font-family:Orbitron,'JetBrains Mono',ui-monospace,monospace;
  line-height:1.14;
  letter-spacing:.02em;
  margin:0 0 .5em;
  color:#fff;
}
h1{font-size:clamp(1.9rem,6.6vw,3.5rem);font-weight:900}
h2{font-size:clamp(1.35rem,3.4vw,2rem);font-weight:700}
h3{font-size:1.12rem;font-weight:700}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}

a{color:var(--g);text-decoration:none}
a:hover{background:var(--g);color:#000}

:focus-visible{outline:3px solid var(--g);outline-offset:2px}

small{
  display:block;
  font-size:16px;
  letter-spacing:.2em;
  color:var(--g);
  margin-bottom:6px;
  font-weight:500;
}

img{max-width:100%}

/* ---------- 顶栏 ---------- */
.bar{
  position:fixed;
  top:0;left:0;right:0;
  height:var(--bar);
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 12px;
  background:#000;
  border-bottom:3px solid var(--g);
  z-index:60;
}

.brand{
  display:flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:8px 10px;
  border:2px solid var(--g);
  border-radius:10px;
  color:var(--g);
  font-family:Orbitron,'JetBrains Mono',monospace;
  font-weight:900;
  font-size:16px;
  flex:0 0 auto;
  max-width:46vw;
  overflow:hidden;
  white-space:nowrap;
}
.brand span{overflow:hidden;text-overflow:ellipsis}
.logo{display:block;width:22px;height:22px;flex:0 0 auto}

.sbox{
  flex:1 1 70px;
  min-width:0;
  display:flex;
  align-items:stretch;
  border:2px solid var(--line);
  border-radius:10px;
  background:var(--glass);
  overflow:hidden;
}
.sbox input{
  flex:1 1 auto;
  min-width:0;
  border:0;
  background:transparent;
  color:var(--ink);
  font:inherit;
  font-size:16px;
  padding:0 10px;
  min-height:44px;
}
.sbox input::placeholder{color:var(--dim)}
.sbox button{
  flex:0 0 auto;
  border:0;
  border-left:2px solid var(--line);
  background:var(--b);
  color:#fff;
  font:inherit;
  font-size:16px;
  font-weight:700;
  padding:0 12px;
  min-height:44px;
  cursor:pointer;
}
.sbox button:hover{background:var(--g);color:#000}

.menu-btn{
  flex:0 0 auto;
  min-height:44px;
  padding:0 14px;
  background:var(--g);
  color:#000;
  border:2px solid var(--g);
  border-radius:10px;
  font:inherit;
  font-size:16px;
  font-weight:700;
  cursor:pointer;
}
.menu-btn:hover{background:var(--b);border-color:var(--b);color:#fff}

/* ---------- 底部导航条 ---------- */
.dock{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  background:#000;
  border-top:3px solid var(--g);
}
.dock ol{
  display:flex;
  list-style:none;
  margin:0;
  padding:0;
  overflow-x:auto;
  overflow-y:hidden;
  scrollbar-width:thin;
}
.dock li{flex:0 0 auto}
.dock a{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:var(--dock);
  padding:0 14px;
  font-size:16px;
  color:var(--ink);
  border-right:2px solid rgba(0,255,128,.18);
  white-space:nowrap;
}
.dock a:hover,.dock a.active{background:var(--g);color:#000}

body.menu-open{overflow:hidden}
body.menu-open .dock{
  top:var(--bar);
  bottom:0;
  display:block;
  overflow-y:auto;
  padding:22px 14px 40px;
  background:rgba(0,0,0,.97);
  border-top:0;
}
body.menu-open .dock ol{
  flex-direction:column;
  max-width:540px;
  margin:0 auto;
  overflow:visible;
}
body.menu-open .dock a{
  justify-content:flex-start;
  min-height:62px;
  padding:0 10px;
  border-right:0;
  border-bottom:2px solid rgba(0,255,128,.22);
  font-family:Orbitron,'JetBrains Mono',monospace;
  font-size:clamp(1.15rem,5.4vw,1.6rem);
  font-weight:700;
}
body.menu-open .dock li{opacity:0;animation:drop .24s steps(3,end) forwards}
body.menu-open .dock li:nth-child(1){animation-delay:.02s}
body.menu-open .dock li:nth-child(2){animation-delay:.05s}
body.menu-open .dock li:nth-child(3){animation-delay:.08s}
body.menu-open .dock li:nth-child(4){animation-delay:.11s}
body.menu-open .dock li:nth-child(5){animation-delay:.14s}
body.menu-open .dock li:nth-child(6){animation-delay:.17s}
body.menu-open .dock li:nth-child(7){animation-delay:.2s}

@keyframes drop{
  from{opacity:0;transform:translateX(-16px)}
  to{opacity:1;transform:none}
}

/* ---------- 主区 ---------- */
main{
  display:grid;
  grid-template-columns:minmax(0,1fr) 296px;
  gap:0 28px;
  max-width:1180px;
  margin:0 auto;
  padding:calc(var(--bar) + 26px) 16px 44px;
}

main > div.hero{
  grid-column:1 / -1;
  margin-bottom:34px;
}
main > div:not(.hero){
  grid-column:1;
  scroll-margin-top:calc(var(--bar) + 18px);
  position:relative;
  border:2px solid var(--line);
  border-left:7px solid var(--g);
  border-radius:10px;
  background:var(--glass);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  padding:22px 20px;
  margin:0 0 22px;
}
main > div:not(.hero):nth-of-type(even){
  border-left-color:var(--b);
  border-color:rgba(0,0,255,.5);
  background:rgba(0,0,255,.15);
}
main > div:not(.hero) > small{color:var(--g)}
main > div:not(.hero) > :last-child{margin-bottom:0}
main > div ul,main > div ol{padding-left:1.2em}
main > div li{margin:.35em 0}

/* ---------- 首屏 ---------- */
.hero{
  display:grid;
  grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);
  gap:26px;
  align-items:center;
  min-height:calc(100svh - var(--bar) - 40px);
  padding:8px 0 12px;
}
.hero-art{
  position:relative;
  margin:0;
  display:flex;
  align-items:center;
  justify-content:center;
  aspect-ratio:4 / 5;
  overflow:hidden;
  border:3px solid var(--g);
  border-radius:10px;
  background:#000;
}
.dotmat{
  position:absolute;
  inset:0;
  background-image:radial-gradient(var(--g) 1.6px,transparent 1.6px);
  background-size:15px 15px;
  opacity:.5;
}
.dotmat::after{
  content:"";
  position:absolute;
  inset:24%;
  border:3px solid var(--b);
}
.hero-img{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.hero-txt{text-align:center;padding:0 4px}
.hero-txt h1{margin:0 0 16px}
.lead{
  color:var(--dim);
  font-size:17px;
  max-width:32ch;
  margin:0 auto 22px;
}
.cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:50px;
  padding:0 24px;
  border:3px solid var(--g);
  border-radius:10px;
  background:var(--g);
  color:#000;
  font-weight:700;
  letter-spacing:.1em;
}
.cta:hover{background:var(--b);border-color:var(--b);color:#fff}

/* ---------- 侧栏 ---------- */
.rail{
  grid-column:2;
  grid-row:2 / span 12;
  align-self:start;
  position:sticky;
  top:calc(var(--bar) + 18px);
  border:2px solid var(--b);
  border-radius:10px;
  background:rgba(0,0,255,.18);
  padding:18px 16px;
}
.rail ol{list-style:none;margin:0;padding:0}
.rail a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:0 8px;
  font-size:16px;
  color:var(--ink);
  border-bottom:1px solid rgba(0,255,128,.2);
}
.rail a:hover{background:var(--b);color:#fff}

/* ---------- 页脚 ---------- */
.foot{
  border-top:4px solid var(--g);
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:26px;
  padding:36px max(16px,calc((100% - 1148px) / 2)) 26px;
  margin-top:44px;
}
.foot ol{list-style:none;margin:0;padding:0}
.foot a{
  display:flex;
  align-items:center;
  min-height:42px;
  padding:0 4px;
  font-size:16px;
  color:var(--ink);
  border-bottom:1px solid rgba(0,255,128,.18);
}
.foot a:hover{background:var(--g);color:#000}
.foot .mega{
  font-size:clamp(2rem,8vw,4.2rem);
  color:var(--g);
  letter-spacing:-.02em;
  margin-bottom:12px;
  word-break:break-word;
}
.fdesc{color:var(--dim);font-size:16px}
.legal{
  grid-column:1 / -1;
  display:flex;
  flex-wrap:wrap;
  gap:10px 18px;
  align-items:center;
  justify-content:space-between;
  border-top:2px solid rgba(0,255,128,.32);
  padding-top:14px;
  margin-top:6px;
  font-size:16px;
}
.legal p{margin:0}

/* ---------- 动效 ---------- */
.rv{opacity:0;transform:translateY(14px)}
.rv.on{
  opacity:1;
  transform:none;
  transition:opacity .2s steps(3,end),transform .2s steps(3,end);
}
.hit{background:var(--b) !important;color:#fff !important}

/* ---------- 断点 ---------- */
@media (max-width:900px){
  main{display:block;padding:calc(var(--bar) + 20px) 14px 34px}
  main > div.hero{margin-bottom:26px}
  .rail{position:static;margin-top:6px}
  .foot{grid-template-columns:1fr 1fr;gap:22px}
}

@media (max-width:860px){
  .hero{
    grid-template-columns:1fr;
    min-height:0;
    gap:18px;
  }
  .hero-txt{order:-1;text-align:left;padding:0}
  .lead{margin-left:0;margin-right:0;max-width:none}
  .hero-art{aspect-ratio:16 / 10}
}

@media (max-width:600px){
  .bar{gap:8px;padding:0 10px}
  .brand{font-size:16px;max-width:40vw}
  .sbox input{padding:0 8px}
  .sbox button{padding:0 10px}
  .menu-btn{padding:0 12px}
  .foot{grid-template-columns:1fr}
  .foot .mega{font-size:clamp(1.8rem,11vw,2.8rem)}
  main{padding-left:12px;padding-right:12px}
  main > div:not(.hero){padding:18px 16px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rv,.rv.on{opacity:1;transform:none;transition:none}
  body.menu-open .dock li{opacity:1;animation:none}
}

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