#brs-widget, #brs-widget * { box-sizing: border-box; }
  #brs-widget {
    --brs-violet: #7352FC;
    --brs-violet-dark: #6435EE;
    --brs-ink: #1D124B;
    --brs-body: #4F4F4F;
    --brs-muted: #737373;
    --brs-border: #DEDEDE;
    --brs-card: #FFFFFF;
    --brs-shadow: 0 4px 24px rgba(29, 18, 75, 0.06);
    --brs-yellow-bg: #FFFBE2; --brs-yellow: #D49900;
    --brs-green-bg: #F6FCF6; --brs-green: #009F3E;
    --brs-sky-bg: #F6FBFE; --brs-sky: #01A1D0;
    --brs-orange-bg: #FFF8F6; --brs-orange: #E5560F;
    font-family: 'Inter', Arial, sans-serif;
    color: var(--brs-body);
    max-width: 720px;
    margin: 0 auto;
    padding: 8px;
  }
  #brs-widget h2, #brs-widget h3, #brs-widget h4 {
    font-family: 'Mona Sans', Arial, sans-serif;
    color: var(--brs-ink);
    margin: 0;
  }
  #brs-widget .brs-card {
    background: var(--brs-card);
    border-radius: 24px;
    box-shadow: var(--brs-shadow);
    padding: 36px;
  }
  @media (max-width: 560px) {
    #brs-widget .brs-card { padding: 24px 20px; }
  }

  /* Progress steps */
  #brs-widget .brs-progress {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 20px;
    padding: 0 4px;
  }
  #brs-widget .brs-progress-step {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--brs-muted);
  }
  #brs-widget .brs-progress-dot {
    width: 22px; height: 22px;
    border-radius: 50%;
    border: 2px solid var(--brs-border);
    display: flex; align-items: center; justify-content: center;
    font-size: 11px;
    flex-shrink: 0;
    transition: background-color .2s, border-color .2s, color .2s;
  }
  #brs-widget .brs-progress-line {
    flex: 1;
    height: 2px;
    background: var(--brs-border);
    transition: background-color .2s;
  }
  #brs-widget .brs-progress-step.is-active .brs-progress-dot,
  #brs-widget .brs-progress-step.is-done .brs-progress-dot {
    border-color: var(--brs-violet);
    background: var(--brs-violet);
    color: #fff;
  }
  #brs-widget .brs-progress-step.is-active { color: var(--brs-ink); }
  #brs-widget .brs-progress-step.is-done .brs-progress-line,
  #brs-widget .brs-progress-line.is-done { background: var(--brs-violet); }
  #brs-widget .brs-progress-label { display: none; }
  @media (min-width: 480px) {
    #brs-widget .brs-progress-label { display: inline; }
  }

  /* Screens */
  #brs-widget .brs-screen { display: none; }
  #brs-widget .brs-screen.is-active {
    display: block;
    animation: brsFade .25s ease;
  }
  @media (prefers-reduced-motion: reduce) {
    #brs-widget .brs-screen.is-active { animation: none; }
  }
  @keyframes brsFade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

  #brs-widget .brs-title { font-size: 28px; line-height: 1.25; font-weight: 800; margin-bottom: 10px; }
  #brs-widget .brs-intro { font-size: 17px; line-height: 1.6; margin-bottom: 28px; }
  #brs-widget .brs-section-heading { font-size: 18px; font-weight: 800; margin: 0 0 14px; }

  /* How it works */
  #brs-widget .brs-steps { display: grid; gap: 14px; margin-bottom: 28px; }
  #brs-widget .brs-step { display: flex; gap: 14px; }
  #brs-widget .brs-step-num {
    flex-shrink: 0;
    width: 30px; height: 30px;
    border-radius: 50%;
    background: #EFEFFF;
    color: var(--brs-violet-dark);
    font-weight: 800;
    font-size: 14px;
    display: flex; align-items: center; justify-content: center;
  }
  #brs-widget .brs-step-title { font-weight: 700; color: var(--brs-ink); font-size: 15px; margin: 0 0 2px; }
  #brs-widget .brs-step-text { font-size: 15px; line-height: 1.5; margin: 0; color: var(--brs-body); }

  /* Reading speed scale legend */
  #brs-widget .brs-scale { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 20px; }
  @media (max-width: 480px) { #brs-widget .brs-scale { grid-template-columns: 1fr; } }
  #brs-widget .brs-scale-item {
    border-radius: 14px;
    padding: 14px 16px;
    border-left: 4px solid var(--brs-border);
    background: #FAFAFA;
  }
  #brs-widget .brs-scale-item.brs-tier-developing { border-left-color: var(--brs-yellow); background: var(--brs-yellow-bg); }
  #brs-widget .brs-scale-item.brs-tier-typical { border-left-color: var(--brs-violet); background: #F9F9FF; }
  #brs-widget .brs-scale-item.brs-tier-strong { border-left-color: var(--brs-sky); background: var(--brs-sky-bg); }
  #brs-widget .brs-scale-item.brs-tier-exceptional { border-left-color: var(--brs-green); background: var(--brs-green-bg); }
  #brs-widget .brs-scale-name { font-weight: 800; color: var(--brs-ink); font-size: 14px; margin: 0 0 3px; }
  #brs-widget .brs-scale-desc { font-size: 13px; color: var(--brs-body); margin: 0; line-height: 1.4; }

  /* Note callout */
  #brs-widget .brs-note {
    background: #F9F9FF;
    border-left: 5px solid var(--brs-violet);
    border-radius: 14px;
    padding: 16px 20px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--brs-body);
    margin-bottom: 28px;
  }
  #brs-widget .brs-note strong { color: var(--brs-ink); }

  /* Grade select */
  #brs-widget .brs-label { display: block; font-weight: 800; color: var(--brs-ink); font-size: 15px; margin-bottom: 12px; }
  #brs-widget .brs-grade-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 28px;
  }
  @media (max-width: 560px) { #brs-widget .brs-grade-grid { grid-template-columns: repeat(3, 1fr); } }
  @media (max-width: 400px) { #brs-widget .brs-grade-grid { grid-template-columns: repeat(2, 1fr); } }
  #brs-widget .brs-grade-btn {
    font-family: 'Inter', Arial, sans-serif;
    border: 1.5px solid var(--brs-border);
    background: #fff;
    border-radius: 14px;
    padding: 10px 6px;
    text-align: center;
    cursor: pointer;
    transition: border-color .15s, background-color .15s, transform .1s;
  }
  #brs-widget .brs-grade-btn:hover { border-color: var(--brs-violet); }
  #brs-widget .brs-grade-btn:active { transform: scale(0.98); }
  #brs-widget .brs-grade-btn[aria-checked="true"] {
    border-color: var(--brs-violet);
    background: #F9F9FF;
    box-shadow: 0 0 0 1.5px var(--brs-violet) inset;
  }
  #brs-widget .brs-grade-num { display: block; font-weight: 800; color: var(--brs-ink); font-size: 13px; }
  #brs-widget .brs-grade-age { display: block; font-size: 10.5px; color: var(--brs-muted); margin-top: 2px; }

  /* Buttons */
  #brs-widget .brs-btn {
    display: inline-block;
    font-family: 'Inter', Arial, sans-serif;
    font-size: 16px;
    font-weight: 800;
    border-radius: 12px;
    padding: 15px 30px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background-color .15s, opacity .15s, transform .1s;
  }
  #brs-widget .brs-btn:active { transform: scale(0.98); }
  #brs-widget .brs-btn-primary { background: var(--brs-violet); color: #fff; }
  #brs-widget .brs-btn-primary:hover { background: var(--brs-violet-dark); }
  #brs-widget .brs-btn-primary:disabled { background: #C9C4EA; cursor: not-allowed; }
  #brs-widget .brs-btn-secondary { background: #fff; color: var(--brs-violet-dark); border: 1.5px solid var(--brs-border); }
  #brs-widget .brs-btn-secondary:hover { border-color: var(--brs-violet); }
  #brs-widget .brs-btn-block { display: block; width: 100%; text-align: center; }
  #brs-widget .brs-btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
  #brs-widget .brs-btn-row .brs-btn { flex: 1; min-width: 160px; text-align: center; }

  /* Screen 2: passage */
  #brs-widget .brs-instruction { font-size: 15px; color: var(--brs-muted); margin-bottom: 20px; }
  #brs-widget .brs-passage-title { font-size: 22px; margin-bottom: 14px; }
  #brs-widget .brs-passage p { font-size: 18px; line-height: 1.75; color: var(--brs-body); margin: 0 0 18px; }
  #brs-widget .brs-passage { margin-bottom: 28px; }

  /* Screen 3: results */
  #brs-widget .brs-result-eyebrow { font-size: 14px; font-weight: 700; color: var(--brs-muted); margin: 0 0 6px; text-align: center; }
  #brs-widget .brs-wpm-display { text-align: center; margin-bottom: 6px; }
  #brs-widget .brs-wpm-number { font-family: 'Mona Sans', Arial, sans-serif; font-size: 64px; font-weight: 800; color: var(--brs-violet); line-height: 1; }
  #brs-widget .brs-wpm-unit { font-size: 15px; color: var(--brs-muted); font-weight: 700; }
  #brs-widget .brs-stat-row {
    display: flex; justify-content: center; gap: 28px; flex-wrap: wrap;
    text-align: center; margin: 18px 0 28px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--brs-border);
  }
  #brs-widget .brs-stat-label { font-size: 12px; color: var(--brs-muted); font-weight: 700; text-transform: uppercase; letter-spacing: .03em; margin: 0 0 4px; }
  #brs-widget .brs-stat-value { font-size: 17px; font-weight: 800; color: var(--brs-ink); margin: 0; }

  #brs-widget .brs-result-panel {
    border-radius: 16px;
    padding: 24px 26px;
    margin-bottom: 24px;
    border-left: 5px solid var(--brs-border);
  }
  #brs-widget .brs-result-panel.brs-tier-developing { background: var(--brs-yellow-bg); border-left-color: var(--brs-yellow); }
  #brs-widget .brs-result-panel.brs-tier-typical { background: #F9F9FF; border-left-color: var(--brs-violet); }
  #brs-widget .brs-result-panel.brs-tier-strong { background: var(--brs-sky-bg); border-left-color: var(--brs-sky); }
  #brs-widget .brs-result-panel.brs-tier-exceptional { background: var(--brs-green-bg); border-left-color: var(--brs-green); }
  #brs-widget .brs-result-panel.brs-tier-invalid { background: var(--brs-orange-bg); border-left-color: var(--brs-orange); }
  #brs-widget .brs-result-heading { font-size: 19px; margin: 0 0 10px; }
  #brs-widget .brs-result-text { font-size: 15px; line-height: 1.6; margin: 0 0 12px; color: var(--brs-body); }
  #brs-widget .brs-result-tip { font-size: 14px; line-height: 1.6; margin: 0; color: var(--brs-body); }
  #brs-widget .brs-result-tip strong { color: var(--brs-ink); }

  /* Lesson CTA banner */
  #brs-widget .brs-cta-banner {
    margin-top: 20px;
    text-align: center;
    background: #F9F9FF;
    border-radius: 16px;
    padding: 20px 24px;
  }
  #brs-widget .brs-cta-text { font-size: 15px; font-weight: 700; color: var(--brs-ink); margin: 0 0 12px; }

  #brs-widget .brs-sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
  }