:root {
      --bg: #050509;
      --card-bg: rgba(10, 10, 18, 0.92);
      --accent: #f5b342;
      --accent-soft: rgba(245, 179, 66, 0.18);
      --accent-strong: rgba(245, 179, 66, 0.45);
      --text-main: #f5f5f7;
      --text-soft: #b8bac6;
      --error: #ff5c7a;
      --success: #66ffb6;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      min-height: 100vh;
      background: radial-gradient(circle at top, #18182a 0, #050509 45%, #000 100%);
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 24px;
      overflow-x: hidden;
    }

    .glow-orbit {
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: -1;
      background:
        radial-gradient(circle at 10% 20%, rgba(245, 179, 66, 0.08), transparent 55%),
        radial-gradient(circle at 90% 80%, rgba(245, 179, 66, 0.12), transparent 55%),
        radial-gradient(circle at 50% 120%, rgba(0, 0, 0, 1), transparent 60%);
      filter: blur(2px);
    }

    .card {
      width: 100%;
      max-width: 960px;
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.01), rgba(245, 179, 66, 0.02)),
                  var(--card-bg);
      border-radius: 24px;
      border: 1px solid rgba(245, 179, 66, 0.25);
      box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.03),
        0 32px 80px rgba(0, 0, 0, 0.85),
        0 0 60px rgba(245, 179, 66, 0.08);
      padding: 28px 24px 24px;
      position: relative;
      overflow: hidden;
      backdrop-filter: blur(18px);
      animation: cardIn 0.9s ease-out forwards;
    }

    @keyframes cardIn {
      from {
        opacity: 0;
        transform: translateY(22px) scale(0.98);
      }
      to {
        opacity: 1;
        transform: translateY(0) scale(1);
      }
    }

    .card::before {
      content: "";
      position: absolute;
      inset: -120px;
      background:
        radial-gradient(circle at 10% -10%, var(--accent-soft), transparent 55%),
        radial-gradient(circle at 110% 110%, var(--accent-soft), transparent 55%);
      opacity: 0.25;
      z-index: -1;
    }

    header {
      margin-bottom: 16px;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      align-items: flex-start;
      flex-wrap: wrap;
    }

    .badge {
      font-size: 11px;
      letter-spacing: 0.22em;
      text-transform: uppercase;
      color: var(--accent);
      padding: 4px 10px;
      border-radius: 999px;
      border: 1px solid rgba(245, 179, 66, 0.6);
      background: radial-gradient(circle at top, rgba(245, 179, 66, 0.25), transparent 60%);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .badge-dot {
      width: 6px;
      height: 6px;
      border-radius: 999px;
      background: var(--accent);
      box-shadow: 0 0 8px rgba(245, 179, 66, 0.8);
    }

    h1 {
      font-size: clamp(22px, 3vw, 26px);
      line-height: 1.15;
      font-weight: 620;
      margin-bottom: 8px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      align-items: center;
    }

    h1 span.accent {
      color: var(--accent);
      text-shadow: 0 0 18px rgba(245, 179, 66, 0.65);
    }

    .subtitle {
      font-size: 14px;
      color: var(--text-soft);
      max-width: 520px;
    }

    .meta {
      text-align: right;
      font-size: 11px;
      color: var(--text-soft);
      display: flex;
      flex-direction: column;
      gap: 4px;
      align-items: flex-end;
    }

    .meta strong {
      color: var(--accent);
      font-weight: 600;
    }

    main {
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.05fr);
      gap: 32px;
      align-items: flex-start;
      margin-top: 12px;
    }

    @media (max-width: 820px) {
      main {
        grid-template-columns: minmax(0, 1fr);
      }
      .meta {
        text-align: left;
        align-items: flex-start;
      }
    }

    .intro {
      font-size: 14px;
      line-height: 1.6;
      color: var(--text-soft);
      display: flex;
      flex-direction: column;
      gap: 10px;
      padding-right: 6px;
    }

    .intro p strong {
      color: var(--text-main);
      font-weight: 500;
    }

    .divider {
      height: 1px;
      background: linear-gradient(
        to right,
        transparent,
        rgba(245, 179, 66, 0.75),
        transparent
      );
      margin: 12px 0 10px;
      opacity: 0.9;
    }

    .bullets {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 6px;
      margin-top: 4px;
    }

    .bullets li {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      font-size: 13px;
      color: var(--text-soft);
    }

    .bullets span.bullet-mark {
      width: 6px;
      height: 6px;
      border-radius: 999px;
      margin-top: 5px;
      background: var(--accent);
      box-shadow: 0 0 10px rgba(245, 179, 66, 0.9);
      flex-shrink: 0;
    }

    .panel {
      border-radius: 18px;
      padding: 16px 16px 14px;
      background:
        radial-gradient(circle at top, rgba(245, 179, 66, 0.18), transparent 65%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.02), rgba(245, 179, 66, 0.02)),
        rgba(4, 4, 10, 0.9);
      border: 1px solid rgba(245, 179, 66, 0.45);
      box-shadow:
        0 18px 40px rgba(0, 0, 0, 0.9),
        0 0 24px rgba(245, 179, 66, 0.3);
      position: relative;
      overflow: hidden;
    }

    .panel::before {
      content: "PORTAL";
      position: absolute;
      font-size: 80px;
      font-weight: 700;
      letter-spacing: 0.3em;
      color: rgba(0, 0, 0, 0.5);
      inset: 6px -40px auto auto;
      text-align: right;
      opacity: 0.35;
      mix-blend-mode: soft-light;
      pointer-events: none;
    }

    .panel-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
    }

    .panel-title {
      font-size: 13px;
      color: var(--accent);
      text-transform: uppercase;
      letter-spacing: 0.18em;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .panel-title-line {
      flex: 1;
      height: 1px;
      background: linear-gradient(
        to right,
        rgba(245, 179, 66, 0.2),
        rgba(245, 179, 66, 0.8)
      );
    }

    .hint {
      font-size: 11px;
      color: var(--text-soft);
      text-align: right;
    }

    .input-row {
      display: flex;
      flex-wrap: nowrap;
      gap: 8px;
      margin-bottom: 10px;
    }

    input[type="number"] {
      flex: 1;
      min-width: 0;
      padding: 10px 12px;
      border-radius: 999px;
      border: 1px solid rgba(245, 179, 66, 0.65);
      background: rgba(5, 5, 12, 0.95);
      color: var(--text-main);
      font-size: 14px;
      outline: none;
      transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease,
        transform 0.05s ease;
    }

    input[type="number"]::placeholder {
      color: rgba(184, 186, 198, 0.7);
    }

    input[type="number"]:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 1px rgba(245, 179, 66, 0.7),
                  0 0 22px rgba(245, 179, 66, 0.35);
      background: rgba(7, 7, 18, 0.98);
      transform: translateY(-1px);
    }

    button {
      padding: 10px 16px;
      border-radius: 999px;
      border: none;
      font-size: 13px;
      font-weight: 500;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      cursor: pointer;
      background: radial-gradient(circle at top, #ffd891, #f5b342);
      color: #201106;
      box-shadow:
        0 10px 28px rgba(245, 179, 66, 0.65),
        0 0 20px rgba(245, 179, 66, 0.9);
      white-space: nowrap;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
    }

    button span.icon {
      font-size: 15px;
    }

    button:hover {
      transform: translateY(-1px) translateZ(0);
      box-shadow:
        0 14px 32px rgba(245, 179, 66, 0.8),
        0 0 26px rgba(245, 179, 66, 1);
      filter: brightness(1.05);
    }

    button:active {
      transform: translateY(0);
      box-shadow:
        0 4px 14px rgba(245, 179, 66, 0.8),
        0 0 18px rgba(245, 179, 66, 1);
      filter: brightness(0.98);
    }