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

    body {
      background: #f4f7fb;
      font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
      padding: 2rem 1.5rem;
      color: #1a2639;
    }

    .container {
      max-width: 1600px;
      margin: 0 auto;
    }

    h1 {
      font-size: 2.4rem;
      font-weight: 600;
      letter-spacing: -0.02em;
      margin-bottom: 0.3rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      flex-wrap: wrap;
    }

    .subhead {
      font-size: 1.1rem;
      color: #3e4a5e;
      margin-bottom: 2rem;
      border-left: 4px solid #b0c4de;
      padding-left: 1rem;
      font-weight: 400;
    }

    /* DOMAIN CARDS */
    .domain-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
      gap: 2rem;
      margin-bottom: 2.5rem;
    }

    .domain-card {
      background: white;
      border-radius: 24px;
      box-shadow: 0 8px 24px rgba(0,20,40,0.06);
      padding: 1.5rem 1.2rem 1.8rem;
      transition: 0.2s ease;
      border: 1px solid #e9edf4;
    }

    .domain-card:hover {
      box-shadow: 0 12px 32px rgba(0,20,40,0.10);
    }

    .domain-title {
      font-size: 1.6rem;
      font-weight: 600;
      margin-bottom: 0.2rem;
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      border-bottom: 2px solid #dce3ef;
      padding-bottom: 0.4rem;
    }

    .domain-sub {
      font-size: 0.9rem;
      font-weight: 400;
      color: #4c5b73;
      margin-bottom: 1.4rem;
      margin-top: -0.1rem;
      font-style: italic;
    }

    /* COMPETENCY ROWS */
    .competency {
      margin-bottom: 1.6rem;
    }

    .comp-header {
      display: flex;
      justify-content: space-between;
      font-weight: 600;
      font-size: 0.95rem;
      margin-bottom: 0.25rem;
      color: #1f2a3f;
      letter-spacing: -0.01em;
    }

    .comp-levels {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr 1fr;
      gap: 0.4rem;
    }

    .level-box {
      background: #f0f3f9;
      border-radius: 12px;
      padding: 0.4rem 0.3rem 0.4rem 0.5rem;
      font-size: 0.68rem;
      line-height: 1.3;
      color: #1f2a3f;
      border-left: 3px solid #b8c9e0;
      transition: background 0.1s;
      min-height: 58px;
      display: flex;
      flex-direction: column;
    }

    .level-box strong {
      font-size: 0.65rem;
      text-transform: uppercase;
      letter-spacing: 0.02em;
      color: #3d506e;
      margin-bottom: 0.15rem;
    }

    .level-box .level-label {
      font-weight: 600;
      color: #16202e;
      display: block;
      margin-bottom: 0.1rem;
    }

    .level-box .desc {
      font-weight: 400;
      color: #28344a;
      word-break: break-word;
    }

    /* SPECIALIZED BRANCH (percussionist) */
    .specialized-section {
      background: white;
      border-radius: 24px;
      box-shadow: 0 8px 24px rgba(0,20,40,0.06);
      padding: 1.8rem 1.8rem 2rem;
      margin-top: 2.2rem;
      border: 1px solid #e9edf4;
    }

    .specialized-section h2 {
      font-size: 1.8rem;
      font-weight: 600;
      margin-bottom: 0.2rem;
    }

    .specialized-section .sub {
      color: #3e4a5e;
      margin-bottom: 1.5rem;
      border-left: 4px solid #b0c4de;
      padding-left: 1rem;
      font-weight: 400;
    }

    .spec-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 1.2rem;
    }

    .spec-item {
      background: #f5f8fe;
      border-radius: 18px;
      padding: 0.9rem 1rem;
      border-left: 5px solid #8aa3c9;
    }

    .spec-item h4 {
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 0.3rem;
      color: #1d2b42;
    }

    .spec-item p {
      font-size: 0.8rem;
      line-height: 1.4;
      color: #2f3e58;
      margin: 0;
    }

    /* how to use */
    .howto {
      background: #eaf0fa;
      border-radius: 20px;
      padding: 1.6rem 2rem;
      margin-top: 2.5rem;
      border-left: 6px solid #3f6a9b;
    }

    .howto h3 {
      font-size: 1.3rem;
      font-weight: 600;
      margin-bottom: 0.6rem;
    }

    .howto ul {
      list-style: none;
      display: flex;
      flex-wrap: wrap;
      gap: 1.8rem 2.5rem;
    }

    .howto li {
      font-size: 0.95rem;
      display: flex;
      align-items: baseline;
      gap: 0.5rem;
    }

    .howto li::before {
      content: "▹";
      color: #1f4a7a;
      font-weight: bold;
    }

    .badge {
      background: #1f2a3f;
      color: white;
      font-size: 0.6rem;
      padding: 0.15rem 0.6rem;
      border-radius: 30px;
      font-weight: 600;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

    .footer-note {
      margin-top: 2rem;
      text-align: right;
      color: #4b5d79;
      font-size: 0.85rem;
      opacity: 0.7;
    }

    @media (max-width: 700px) {
      body { padding: 1rem 0.8rem; }
      h1 { font-size: 1.8rem; }
      .domain-grid { grid-template-columns: 1fr; }
      .comp-levels { grid-template-columns: 1fr 1fr; }
      .level-box { min-height: 68px; }
      .spec-grid { grid-template-columns: 1fr; }
      .howto ul { flex-direction: column; gap: 0.6rem; }
    }