:root {
      --bg-color: #050816;
      --bg-alt: #090b1f;
      --card-bg: #0b1022;
      --accent: #915eff;
      --accent-soft: rgba(145, 94, 255, 0.16);
      --accent-strong: #a485ff;
      --accent2: #2dd4ff;
      --accent2-soft: rgba(45, 212, 255, 0.12);
      --text-main: #e4e7f5;
      --text-muted: #9ca3af;
      --border-subtle: rgba(148, 163, 184, 0.3);
      --shadow-soft: 0 24px 60px rgba(15, 23, 42, 0.7);
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
        "Segoe UI", sans-serif;
      background:
        radial-gradient(circle at top left, rgba(145, 94, 255, 0.06), transparent 55%),
        radial-gradient(circle at bottom right, rgba(45, 212, 255, 0.04), transparent 55%),
        var(--bg-color);
      color: var(--text-main);
      padding: 24px 16px 40px;
      display: flex;
      justify-content: center;
    }

    .page {
      width: 100%;
      max-width: 1100px;
    }

    .hero {
      background:
        linear-gradient(135deg, rgba(145, 94, 255, 0.22), transparent 55%),
        radial-gradient(circle at top right, rgba(45, 212, 255, 0.18), transparent 55%),
        linear-gradient(to bottom right, #020617, #020617);
      border-radius: 24px;
      padding: 28px 24px 24px;
      box-shadow: var(--shadow-soft);
      border: 1px solid rgba(148, 163, 184, 0.55);
      position: relative;
      overflow: hidden;
      margin-bottom: 28px;
    }

    .hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 10% 0%, rgba(255, 255, 255, 0.12), transparent 55%),
        radial-gradient(circle at 90% 100%, rgba(145, 94, 255, 0.16), transparent 55%);
      mix-blend-mode: soft-light;
      opacity: 0.7;
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 1;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(15, 23, 42, 0.85);
      padding: 4px 12px 4px 4px;
      border-radius: 999px;
      border: 1px solid rgba(148, 163, 184, 0.55);
      backdrop-filter: blur(10px);
      margin-bottom: 14px;
    }

    .hero-chip {
      width: 22px;
      height: 22px;
      border-radius: 999px;
      background:
        conic-gradient(from 210deg, #2dd4ff, #915eff, #22c55e, #2dd4ff);
      padding: 2px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.75);
    }

    .hero-chip-inner {
      width: 100%;
      height: 100%;
      border-radius: 999px;
      background: #020617;
      border: 1px solid rgba(148, 163, 184, 0.9);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      color: var(--accent2);
      font-weight: 600;
    }

    .hero-tag span {
      font-size: 13px;
      color: var(--text-muted);
      letter-spacing: 0.03em;
      text-transform: uppercase;
    }

    .hero-title {
      font-size: clamp(1.9rem, 3vw, 2.3rem);
      line-height: 1.2;
      margin: 0 0 12px;
      letter-spacing: 0.03em;
    }

    .hero-title span.highlight {
      background: linear-gradient(120deg, #e5e7eb, #c4b5fd, #6ee7b7);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .hero-subtitle {
      margin: 0;
      max-width: 620px;
      font-size: 0.96rem;
      color: #d1d5db;
    }

    .section {
      background:
        radial-gradient(circle at top left, rgba(148, 163, 184, 0.1), transparent 60%),
        var(--card-bg);
      border-radius: 18px;
      padding: 20px 20px 18px;
      margin-bottom: 18px;
      border: 1px solid var(--border-subtle);
      box-shadow: 0 18px 40px rgba(15, 23, 42, 0.9);
    }

    .section-title {
      font-size: 1.1rem;
      margin: 0 0 10px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: #9ca3af;
    }

    .section-title span {
      color: var(--accent-strong);
    }

    .section p {
      margin: 0 0 10px;
      font-size: 0.92rem;
      line-height: 1.6;
      color: #d1d5db;
    }

    .section ul {
      margin: 8px 0;
      padding-left: 20px;
    }

    .section li {
      margin-bottom: 6px;
      font-size: 0.9rem;
      color: #d1d5db;
    }

    .quiz-section {
      background:
        radial-gradient(circle at top, rgba(145, 94, 255, 0.08), transparent 60%),
        var(--card-bg);
      border-radius: 18px;
      padding: 20px;
      margin-top: 28px;
      border: 1px solid var(--accent);
      box-shadow: 0 18px 40px rgba(145, 94, 255, 0.3);
    }

    .quiz-title {
      font-size: 1.2rem;
      margin: 0 0 16px;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--accent-strong);
      text-align: center;
    }

    .question-card {
      background: rgba(15, 23, 42, 0.7);
      border-radius: 12px;
      padding: 16px;
      margin-bottom: 16px;
      border: 1px solid rgba(148, 163, 184, 0.4);
    }

    .question-text {
      font-size: 0.95rem;
      font-weight: 600;
      color: #e5e7eb;
      margin-bottom: 12px;
    }

    .option {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 8px;
      margin-bottom: 6px;
      cursor: pointer;
      border-radius: 8px;
      transition: background 0.2s;
    }

    .option:hover {
      background: rgba(148, 163, 184, 0.1);
    }

    .option input[type="radio"] {
      cursor: pointer;
    }

    .option label {
      cursor: pointer;
      font-size: 0.88rem;
      color: #d1d5db;
    }

    .quiz-feedback {
      margin-top: 12px;
      padding: 12px;
      border-radius: 8px;
      font-size: 0.9rem;
      text-align: center;
      display: none;
    }

    .quiz-feedback.correct {
      background: rgba(34, 197, 94, 0.2);
      border: 1px solid #22c55e;
      color: #6ee7b7;
      display: block;
    }

    .quiz-feedback.incorrect {
      background: rgba(239, 68, 68, 0.2);
      border: 1px solid #ef4444;
      color: #fca5a5;
      display: block;
    }

    .check-btn {
      display: block;
      width: 100%;
      padding: 12px;
      margin-top: 16px;
      background: linear-gradient(135deg, var(--accent), var(--accent2));
      color: white;
      border: none;
      border-radius: 8px;
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      transition: transform 0.2s, box-shadow 0.2s;
    }

    .check-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(145, 94, 255, 0.4);
    }

    .next-btn {
      display: none;
      width: 100%;
      padding: 14px;
      margin-top: 20px;
      background: linear-gradient(135deg, #22c55e, #2dd4ff);
      color: white;
      border: none;
      border-radius: 8px;
      font-size: 1.1rem;
      font-weight: 600;
      cursor: pointer;
      transition: transform 0.2s, box-shadow 0.2s;
      text-align: center;
      text-decoration: none;
    }

    .next-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(34, 197, 94, 0.4);
    }

    .next-btn.unlocked {
      display: block;
    }
	
	.module-info {
  background: rgba(255, 255, 255, 0.05);
  border-left: 4px solid var(--accent, #8b5cf6);
  padding: 1rem 1.5rem;
  margin-bottom: 2rem;
  border-radius: 8px;
}

.module-info p {
  margin: 0.5rem 0;
  font-size: 0.95rem;
}

.module-info strong {
  color: var(--accent, #8b5cf6);
}