:root {
    --bg-a: #0b1220;
    --bg-b: #172033;
    --card: rgba(255,255,255,0.08);
    --card-border: rgba(255,255,255,0.14);
    --text: #e8eefc;
    --muted: #9fb0d1;
    --accent: #5aa8ff;
    --accent-2: #7c5cff;
    --ok: #7ee787;
    --warn: #f2cc60;
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    min-height: 100vh;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    color: var(--text);
    background:
      radial-gradient(circle at 15% 20%, rgba(90,168,255,.22), transparent 30%),
      radial-gradient(circle at 85% 80%, rgba(124,92,255,.18), transparent 28%),
      linear-gradient(135deg, var(--bg-a), var(--bg-b));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
  }

  .shell {
    width: 100%;
    max-width: 980px;
    display: grid;
    grid-template-columns: 1.2fr 0.9fr;
    gap: 24px;
  }

  .panel, .side {
    background: var(--card);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 24px;
    box-shadow: 0 24px 80px rgba(0,0,0,.35);
  }

  .panel {
    padding: 34px;
  }

  .side {
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }

  .badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 13px;
    color: #dbe7ff;
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.1);
    margin-bottom: 18px;
  }

  .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--ok);
    box-shadow: 0 0 10px rgba(126,231,135,.8);
  }

  h1 {
    margin: 0 0 14px;
    font-size: 42px;
    line-height: 1.05;
    letter-spacing: -0.03em;
  }

  .lead {
    margin: 0 0 28px;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.65;
    max-width: 58ch;
  }

  .grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 18px;
  }

  .card {
    padding: 18px;
    border-radius: 18px;
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.08);
  }

  .card strong {
    display: block;
    font-size: 14px;
    margin-bottom: 8px;
  }

  .card span {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
  }

  .loginbox {
    padding: 18px;
    border-radius: 18px;
    background: rgba(8,14,26,.42);
    border: 1px solid rgba(255,255,255,.08);
  }

  .loginbox h2 {
    margin: 0 0 8px;
    font-size: 20px;
  }

  .loginbox p {
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.6;
  }

  label {
    display: block;
    margin: 0 0 8px;
    font-size: 13px;
    color: #c7d5f2;
  }

  input {
    width: 100%;
    margin-bottom: 14px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,.08);
    background: rgba(255,255,255,.045);
    color: #dbe7ff;
    padding: 13px 14px;
    font-size: 14px;
    outline: none;
  }

  input[disabled] {
    opacity: .72;
    cursor: not-allowed;
  }

  .btn {
    width: 100%;
    border: 0;
    border-radius: 14px;
    padding: 13px 16px;
    font-size: 14px;
    font-weight: 700;
    color: white;
    cursor: pointer;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: 0 14px 28px rgba(55, 102, 255, .28);
  }

  .btn.secondary {
    margin-top: 10px;
    background: rgba(255,255,255,.07);
    color: #dbe7ff;
    box-shadow: none;
    border: 1px solid rgba(255,255,255,.08);
  }

  .notice {
    margin-top: 14px;
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(242,204,96,.09);
    border: 1px solid rgba(242,204,96,.18);
    color: #f9e7a1;
    font-size: 13px;
    line-height: 1.5;
  }

  .meta {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    color: var(--muted);
    font-size: 12px;
    margin-top: 18px;
  }

  .brand {
    font-size: 13px;
    color: var(--muted);
  }

  @media (max-width: 900px) {
    .shell {
      grid-template-columns: 1fr;
    }
    h1 {
      font-size: 34px;
    }
    .grid {
      grid-template-columns: 1fr;
    }
  }