:root {
  color-scheme: dark;
  --bg: #0d1823;
  --panel: #142536;
  --panel-soft: #1b3043;
  --line: #2c455a;
  --text: #edf3f8;
  --muted: #a9bac8;
  --accent: #53b7c8;
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; background: var(--bg); color: var(--text);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
}
.topbar {
  min-height: 76px; padding: 14px 5vw; display: flex; align-items: center;
  justify-content: space-between; border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; letter-spacing: .08em; }
.brand-mark {
  display: grid; place-items: center; width: 42px; height: 42px;
  border: 1px solid var(--accent); color: var(--accent); font-weight: 800;
}
.brand strong, .brand small { display: block; }
.brand small { margin-top: 4px; color: var(--muted); font-size: 9px; }
.status { color: var(--muted); font-size: 12px; }
.layout {
  width: min(1120px, 90vw); min-height: calc(100vh - 130px); margin: auto;
  padding: 7vh 0; display: grid; grid-template-columns: 1.1fr .9fr;
  align-items: center; gap: 8%;
}
.eyebrow { color: var(--accent); font-size: 11px; letter-spacing: .2em; font-weight: 700; }
h1 { margin: 18px 0; font-size: clamp(36px, 5vw, 58px); line-height: 1.08; }
.intro { max-width: 440px; color: var(--muted); line-height: 1.7; }
.login-card {
  max-width: 420px; margin-top: 34px; padding: 24px; display: grid; gap: 11px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
}
label { margin-top: 5px; color: var(--muted); font-size: 13px; }
input {
  width: 100%; padding: 13px; color: var(--text); background: #0d1b28;
  border: 1px solid var(--line); border-radius: 7px; font: inherit;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
button {
  margin-top: 10px; padding: 13px; border: 0; border-radius: 7px;
  background: var(--accent); color: #09202a; font-weight: 800; cursor: pointer;
}
button:hover { filter: brightness(1.08); }
.message { min-height: 18px; margin: 2px 0 0; color: var(--muted); font-size: 12px; }
.info-panel {
  padding: 30px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 14px;
}
.blueprint {
  height: 210px; position: relative; display: grid; place-items: center;
  overflow: hidden; border: 1px solid #356078;
  background: linear-gradient(rgba(83,183,200,.08) 1px, transparent 1px),
              linear-gradient(90deg, rgba(83,183,200,.08) 1px, transparent 1px);
  background-size: 22px 22px; color: var(--accent); font-size: 42px; font-weight: 800;
}
.blueprint i, .blueprint b { position: absolute; border: 1px solid var(--accent); opacity: .65; }
.blueprint i { width: 58%; height: 55%; transform: rotate(-12deg); }
.blueprint b { width: 35%; height: 75%; transform: rotate(18deg); }
.info-panel h2 { margin: 25px 0 8px; font-size: 20px; }
.info-panel p { color: var(--muted); line-height: 1.6; font-size: 14px; }
.features { display: grid; gap: 12px; margin-top: 25px; color: var(--accent); font-size: 12px; }
footer { padding: 20px 5vw; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; padding: 48px 0; gap: 35px; }
  .info-panel { padding: 22px; }
  .blueprint { height: 150px; }
  .status { font-size: 10px; }
}