:root {
  --bg: #000;
  --green: #00FF41;
  --dim: #4D8055;
  --border: #003B00;
  --border2: #0B2011;
  --amber: #FFB000;
  --red: #FF003C;
  --cyan: #00E5FF;
  --mono: 'Menlo', 'Consolas', 'Courier New', monospace;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: #E0F8E0;
  font-family: var(--mono);
  min-height: 100vh;
}
body { position: relative; overflow-x: hidden; }
#rain {
  position: fixed; inset: 0; z-index: 0; opacity: 0.12;
  background-image: repeating-linear-gradient(180deg, rgba(0,255,65,0.4), rgba(0,255,65,0.4) 2px, transparent 2px, transparent 14px);
  animation: rain 4s linear infinite;
  pointer-events: none;
}
@keyframes rain {
  from { background-position: 0 0; }
  to { background-position: 0 200px; }
}
main, header, footer { position: relative; z-index: 1; }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(0,0,0,0.85);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo { width: 42px; height: 42px; filter: drop-shadow(0 0 6px var(--green)); }
.brand .glow {
  color: var(--green);
  font-size: 22px; letter-spacing: 6px; font-weight: 900;
  text-shadow: 0 0 12px var(--green);
  line-height: 1;
}
.brand .sub { color: var(--dim); font-size: 10px; letter-spacing: 2px; }
.hero-logo {
  width: 160px; height: 160px;
  display: block; margin: 0 0 20px;
  filter: drop-shadow(0 0 20px rgba(0,255,65,0.5));
}
.topbar nav { display: flex; gap: 20px; }
.topbar nav a { color: var(--green); text-decoration: none; font-size: 12px; letter-spacing: 2px; }
.topbar nav a:hover { text-shadow: 0 0 8px var(--green); }

.hero { padding: 48px 24px; max-width: 1000px; margin: 0 auto; }
.hero h1 { font-size: 36px; letter-spacing: 3px; line-height: 1.3; margin: 0 0 12px; }
.hero .glow { color: var(--green); text-shadow: 0 0 12px var(--green); }
.hero .tagline { color: #A3D8B3; max-width: 720px; line-height: 1.7; font-size: 14px; }

.banner {
  margin-top: 16px; padding: 10px 14px; border: 1px solid var(--border);
  background: rgba(0,255,65,0.05); font-size: 12px; color: var(--dim);
}
.banner.ok { border-color: var(--green); color: var(--green); }
.banner.err { border-color: var(--red); color: var(--red); background: rgba(255,0,60,0.06); }

.panel { max-width: 1000px; margin: 0 auto 32px; border: 1px solid var(--border); background: rgba(5,16,8,0.7); }
.panel-head {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px; background: rgba(11,32,17,0.9); border-bottom: 1px solid var(--border);
}
.panel-head h2 { margin: 0; font-size: 12px; color: var(--green); letter-spacing: 2px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.r { background: var(--red); } .dot.y { background: var(--amber); } .dot.g { background: var(--green); }
.panel-body { padding: 20px; }

.row { display: flex; gap: 12px; align-items: center; margin-bottom: 12px; flex-wrap: wrap; }
.row label { color: var(--dim); font-size: 12px; letter-spacing: 1px; }
input[type="file"], select {
  background: #000; color: var(--green); font-family: var(--mono);
  border: 1px solid var(--border); padding: 8px 10px; font-size: 13px;
}
.btn {
  background: transparent; color: var(--green);
  border: 1px solid var(--green); padding: 10px 18px;
  font-family: var(--mono); letter-spacing: 2px; font-size: 12px; font-weight: 700;
  cursor: pointer; transition: all 0.15s;
}
.btn:hover:not(:disabled) { background: var(--green); color: #000; box-shadow: 0 0 12px var(--green); }
.btn:disabled { opacity: 0.35; cursor: not-allowed; }
.btn.primary { background: var(--green); color: #000; }
.btn.primary:hover:not(:disabled) { box-shadow: 0 0 20px var(--green); }
.btn.ghost { border-color: var(--border); color: var(--green); }

.device-info {
  padding: 10px 14px; border: 1px dashed var(--border);
  color: var(--dim); font-size: 12px; margin-bottom: 16px;
}
.device-info.ok { color: var(--green); border-color: var(--green); border-style: solid; }

.progress-wrap { border: 1px solid var(--border); height: 8px; margin-top: 12px; }
.progress { height: 100%; width: 0; background: var(--green); transition: width 0.3s; }

.log {
  margin-top: 12px; background: #000; border: 1px solid var(--border);
  color: var(--green); font-size: 12px; line-height: 1.6;
  padding: 14px; max-height: 320px; overflow-y: auto; white-space: pre-wrap;
}

.steps { padding-left: 22px; line-height: 1.8; font-size: 14px; color: #E0F8E0; }
.steps strong { color: var(--green); }
.steps a { color: var(--cyan); }
.warn {
  margin-top: 16px; padding: 12px 14px; border-left: 3px solid var(--amber);
  background: rgba(255,176,0,0.06); color: var(--amber); font-size: 13px;
}

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.dl {
  display: block; border: 1px solid var(--border); padding: 14px;
  color: var(--green); text-decoration: none; background: rgba(0,0,0,0.5);
  transition: all 0.15s;
}
.dl:hover { border-color: var(--green); box-shadow: 0 0 12px rgba(0,255,65,0.4); }
.dl h3 { margin: 0 0 6px; font-size: 13px; letter-spacing: 2px; }
.dl span { color: var(--dim); font-size: 11px; }

footer { text-align: center; padding: 24px; color: var(--dim); font-size: 11px; letter-spacing: 2px; }
footer .glow { color: var(--green); }

@media (max-width: 720px) {
  .hero h1 { font-size: 24px; letter-spacing: 2px; }
  .topbar nav { display: none; }
}