#rc-breathing-app {
    --rcb-navy: #003b5d;
    --rcb-navy-dark: #002c46;
    --rcb-navy-soft: #e9f1f5;
    --rcb-ink: #17303f;
    --rcb-muted: #5f7280;
    --rcb-line: #d7e2e8;
    --rcb-surface: #ffffff;
    --rcb-canvas: #f4f8fa;
    --rcb-teal: #2b8990;
    --rcb-gold: #b88635;
    --rcb-danger: #9d3b3b;
    --rcb-radius-xl: 28px;
    --rcb-radius-lg: 20px;
    --rcb-radius-md: 14px;
    --rcb-shadow: 0 18px 48px rgba(0, 59, 93, 0.12);
    width: 100%;
    max-width: 1180px;
    margin: 24px auto;
    color: var(--rcb-ink);
    font-family: inherit;
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
  }

  #rc-breathing-app,
  #rc-breathing-app *,
  #rc-breathing-app *::before,
  #rc-breathing-app *::after {
    box-sizing: border-box;
  }

  #rc-breathing-app button,
  #rc-breathing-app input {
    font: inherit;
  }

  #rc-breathing-app button {
    -webkit-tap-highlight-color: transparent;
  }

  #rc-breathing-app .rcb-shell {
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 59, 93, 0.12);
    border-radius: var(--rcb-radius-xl);
    background:
      radial-gradient(circle at 100% 0%, rgba(43, 137, 144, 0.12), transparent 32%),
      linear-gradient(145deg, #ffffff 0%, var(--rcb-canvas) 100%);
    box-shadow: var(--rcb-shadow);
  }

  #rc-breathing-app .rcb-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    padding: 34px 38px 28px;
    border-bottom: 1px solid var(--rcb-line);
  }

  #rc-breathing-app .rcb-eyebrow {
    margin: 0 0 8px;
    color: var(--rcb-teal);
    font-size: 0.72rem;
    font-weight: 750;
    letter-spacing: 0.16em;
  }

  #rc-breathing-app .rcb-title {
    margin: 0;
    color: var(--rcb-navy);
    font-size: clamp(1.75rem, 4vw, 2.65rem);
    line-height: 1.08;
    letter-spacing: -0.025em;
  }

  #rc-breathing-app .rcb-intro {
    max-width: 700px;
    margin: 12px 0 0;
    color: var(--rcb-muted);
    font-size: 1rem;
  }

  #rc-breathing-app .rcb-icon-button {
    display: inline-grid;
    flex: 0 0 auto;
    place-items: center;
    width: 48px;
    height: 48px;
    padding: 0;
    border: 1px solid var(--rcb-line);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.84);
    color: var(--rcb-navy);
    cursor: pointer;
  }

  #rc-breathing-app .rcb-icon-button:hover {
    border-color: var(--rcb-navy);
    background: var(--rcb-navy-soft);
  }

  #rc-breathing-app .rcb-icon-button svg {
    width: 24px;
    height: 24px;
    overflow: visible;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
  }

  #rc-breathing-app .rcb-icon-button .rcb-icon-dot {
    fill: currentColor;
    stroke: none;
  }

  #rc-breathing-app .rcb-icon-button--small {
    width: 42px;
    height: 42px;
  }

  #rc-breathing-app :where(button, input, summary):focus-visible {
    outline: 3px solid rgba(43, 137, 144, 0.45);
    outline-offset: 3px;
  }

  #rc-breathing-app .rcb-view {
    min-height: 430px;
    padding: 32px 38px 38px;
  }

  #rc-breathing-app .rcb-section + .rcb-section {
    margin-top: 34px;
    padding-top: 30px;
    border-top: 1px solid var(--rcb-line);
  }

  #rc-breathing-app .rcb-step-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 8px;
    color: var(--rcb-teal);
    font-size: 0.76rem;
    font-weight: 750;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  #rc-breathing-app .rcb-step-number {
    display: inline-grid;
    place-items: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--rcb-navy-soft);
    color: var(--rcb-navy);
    letter-spacing: 0;
  }

  #rc-breathing-app .rcb-section-title,
  #rc-breathing-app .rcb-group-title,
  #rc-breathing-app .rcb-session-title {
    margin: 0;
    color: var(--rcb-navy);
    line-height: 1.2;
    letter-spacing: -0.015em;
  }

  #rc-breathing-app .rcb-section-title {
    font-size: clamp(1.25rem, 3vw, 1.65rem);
  }

  #rc-breathing-app .rcb-section-help {
    margin: 8px 0 18px;
    color: var(--rcb-muted);
  }

  #rc-breathing-app .rcb-family-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  /* Mesmerize Pro injecte parfois des pseudo-éléments de clearfix dans les
     conteneurs dont le nom contient "grid". Sans ce reset, ils occupent une
     case invisible et décalent tous les éléments suivants. */
  #rc-breathing-app .rcb-family-grid::before,
  #rc-breathing-app .rcb-family-grid::after,
  #rc-breathing-app .rcb-exercise-grid::before,
  #rc-breathing-app .rcb-exercise-grid::after,
  #rc-breathing-app .rcb-config-layout::before,
  #rc-breathing-app .rcb-config-layout::after,
  #rc-breathing-app .rcb-duration-grid::before,
  #rc-breathing-app .rcb-duration-grid::after,
  #rc-breathing-app .rcb-custom-grid::before,
  #rc-breathing-app .rcb-custom-grid::after,
  #rc-breathing-app .rcb-metrics::before,
  #rc-breathing-app .rcb-metrics::after {
    content: none !important;
    display: none !important;
  }

  #rc-breathing-app .rcb-family-button {
    width: 100% !important;
    max-width: none !important;
    min-width: 0;
    min-height: 118px;
    padding: 18px 12px;
    border: 1px solid var(--rcb-line);
    border-radius: var(--rcb-radius-lg);
    background: rgba(255, 255, 255, 0.86);
    color: var(--rcb-navy);
    cursor: pointer;
    transition: border-color 160ms ease, background-color 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
  }

  #rc-breathing-app .rcb-family-button:hover {
    border-color: rgba(0, 59, 93, 0.45);
    transform: translateY(-2px);
  }

  #rc-breathing-app .rcb-family-button[aria-pressed="true"] {
    border-color: var(--rcb-navy);
    background: var(--rcb-navy);
    color: #ffffff;
    box-shadow: 0 12px 28px rgba(0, 59, 93, 0.2);
  }

  #rc-breathing-app .rcb-family-icon {
    display: block;
    width: 44px;
    height: 44px;
    margin: 0 auto 9px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.6;
    vector-effect: non-scaling-stroke;
  }

  #rc-breathing-app .rcb-family-name {
    display: block;
    font-size: 0.95rem;
    font-weight: 750;
  }

  #rc-breathing-app .rcb-group + .rcb-group {
    margin-top: 28px;
  }

  #rc-breathing-app .rcb-group-title {
    margin-bottom: 14px;
    font-size: 1.08rem;
  }

  #rc-breathing-app .rcb-exercise-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  #rc-breathing-app .rcb-exercise-card {
    position: relative;
    width: 100%;
    min-height: 176px;
    padding: 18px;
    border: 1px solid var(--rcb-line);
    border-radius: var(--rcb-radius-lg);
    background: rgba(255, 255, 255, 0.92);
    color: var(--rcb-ink);
    text-align: left;
    cursor: pointer;
    transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
  }

  #rc-breathing-app .rcb-exercise-card:hover {
    border-color: rgba(0, 59, 93, 0.45);
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(0, 59, 93, 0.09);
  }

  #rc-breathing-app .rcb-exercise-card[aria-pressed="true"] {
    border: 2px solid var(--rcb-navy);
    padding: 17px;
    background: linear-gradient(145deg, #ffffff, #edf5f7);
    box-shadow: 0 12px 28px rgba(0, 59, 93, 0.13);
  }

  #rc-breathing-app .rcb-exercise-card[aria-pressed="true"]::after {
    content: "";
    position: absolute;
    top: 16px;
    right: 16px;
    width: 12px;
    height: 12px;
    border: 3px solid #ffffff;
    border-radius: 50%;
    background: var(--rcb-teal);
    box-shadow: 0 0 0 2px var(--rcb-teal);
  }

  #rc-breathing-app .rcb-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin: 0 30px 13px 0;
  }

  #rc-breathing-app .rcb-badge,
  #rc-breathing-app .rcb-level {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 4px 9px;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 750;
    line-height: 1.15;
  }

  #rc-breathing-app .rcb-badge {
    background: var(--rcb-navy-soft);
    color: var(--rcb-navy);
  }

  #rc-breathing-app .rcb-level {
    border: 1px solid var(--rcb-line);
    background: #ffffff;
    color: var(--rcb-muted);
  }

  #rc-breathing-app .rcb-card-name {
    display: block;
    margin-bottom: 5px;
    color: var(--rcb-navy);
    font-size: 1.06rem;
    font-weight: 780;
  }

  #rc-breathing-app .rcb-card-rhythm {
    display: block;
    margin-bottom: 9px;
    color: var(--rcb-teal);
    font-size: 1.2rem;
    font-weight: 780;
    letter-spacing: 0.04em;
  }

  #rc-breathing-app .rcb-card-description {
    display: block;
    color: var(--rcb-muted);
    font-size: 0.88rem;
    line-height: 1.55;
  }

  #rc-breathing-app .rcb-advanced {
    margin-top: 16px;
    border: 1px solid var(--rcb-line);
    border-radius: var(--rcb-radius-lg);
    background: rgba(255, 255, 255, 0.6);
  }

  #rc-breathing-app .rcb-advanced > summary {
    min-height: 54px;
    padding: 15px 18px;
    color: var(--rcb-navy);
    font-weight: 750;
    cursor: pointer;
  }

  #rc-breathing-app .rcb-advanced-inner {
    padding: 0 14px 14px;
  }

  #rc-breathing-app .rcb-config-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.92fr);
    gap: 20px;
    align-items: start;
  }

  #rc-breathing-app .rcb-panel {
    border: 1px solid var(--rcb-line);
    border-radius: var(--rcb-radius-lg);
    background: rgba(255, 255, 255, 0.9);
    padding: 20px;
  }

  #rc-breathing-app .rcb-panel-title {
    margin: 0 0 13px;
    color: var(--rcb-navy);
    font-size: 1rem;
  }

  #rc-breathing-app .rcb-duration-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  #rc-breathing-app .rcb-duration-button {
    min-height: 64px;
    padding: 10px;
    border: 1px solid var(--rcb-line);
    border-radius: var(--rcb-radius-md);
    background: #ffffff;
    color: var(--rcb-navy);
    cursor: pointer;
  }

  #rc-breathing-app .rcb-duration-button[aria-pressed="true"] {
    border-color: var(--rcb-navy);
    background: var(--rcb-navy);
    color: #ffffff;
  }

  #rc-breathing-app .rcb-duration-time {
    display: block;
    font-weight: 780;
  }

  #rc-breathing-app .rcb-duration-name {
    display: block;
    margin-top: 2px;
    font-size: 0.75rem;
    opacity: 0.8;
  }

  #rc-breathing-app .rcb-custom-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 16px;
  }

  #rc-breathing-app .rcb-field {
    display: block;
  }

  #rc-breathing-app .rcb-field-label {
    display: block;
    min-height: 38px;
    margin-bottom: 6px;
    color: var(--rcb-muted);
    font-size: 0.78rem;
    font-weight: 700;
  }

  #rc-breathing-app .rcb-number-wrap {
    position: relative;
  }

  #rc-breathing-app .rcb-number-input {
    width: 100%;
    min-height: 50px;
    padding: 10px 34px 10px 12px;
    border: 1px solid var(--rcb-line);
    border-radius: var(--rcb-radius-md);
    background: #ffffff;
    color: var(--rcb-ink);
    font-size: 1rem;
    font-weight: 750;
  }

  #rc-breathing-app .rcb-number-input[aria-invalid="true"] {
    border-color: var(--rcb-danger);
  }

  #rc-breathing-app .rcb-number-unit {
    position: absolute;
    top: 50%;
    right: 12px;
    color: var(--rcb-muted);
    transform: translateY(-50%);
    pointer-events: none;
  }

  #rc-breathing-app .rcb-live-summary {
    min-height: 80px;
    padding: 14px;
    border-radius: var(--rcb-radius-md);
    background: var(--rcb-canvas);
    color: var(--rcb-muted);
    font-size: 0.86rem;
  }

  #rc-breathing-app .rcb-live-summary strong {
    color: var(--rcb-navy);
  }

  #rc-breathing-app .rcb-advanced-flag {
    display: inline-flex;
    margin-top: 8px;
    padding: 5px 9px;
    border-radius: 999px;
    background: #f7eddd;
    color: #77531d;
    font-size: 0.72rem;
    font-weight: 780;
  }

  #rc-breathing-app .rcb-recap {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
  }

  #rc-breathing-app .rcb-phase-chip {
    padding: 8px 10px;
    border: 1px solid var(--rcb-line);
    border-radius: 999px;
    background: #ffffff;
    color: var(--rcb-muted);
    font-size: 0.8rem;
  }

  #rc-breathing-app .rcb-phase-chip strong {
    color: var(--rcb-navy);
  }

  #rc-breathing-app .rcb-metrics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin: 16px 0;
  }

  #rc-breathing-app .rcb-metric {
    padding: 12px;
    border-radius: var(--rcb-radius-md);
    background: var(--rcb-canvas);
  }

  #rc-breathing-app .rcb-metric-label {
    display: block;
    color: var(--rcb-muted);
    font-size: 0.72rem;
  }

  #rc-breathing-app .rcb-metric-value {
    display: block;
    margin-top: 2px;
    color: var(--rcb-navy);
    font-weight: 780;
  }

  #rc-breathing-app .rcb-guidance,
  #rc-breathing-app .rcb-protocol,
  #rc-breathing-app .rcb-safety-inline {
    margin-top: 14px;
    padding: 14px 15px;
    border-radius: var(--rcb-radius-md);
    font-size: 0.86rem;
  }

  #rc-breathing-app .rcb-guidance {
    border-left: 4px solid var(--rcb-teal);
    background: #edf6f6;
    color: #345f62;
  }

  #rc-breathing-app .rcb-guidance p,
  #rc-breathing-app .rcb-protocol p,
  #rc-breathing-app .rcb-safety-inline p {
    margin: 0;
  }

  #rc-breathing-app .rcb-guidance p + p {
    margin-top: 7px;
  }

  #rc-breathing-app .rcb-protocol {
    background: var(--rcb-navy-soft);
    color: var(--rcb-navy);
  }

  #rc-breathing-app .rcb-safety-inline {
    border: 1px solid #ead8b9;
    background: #fffaf0;
    color: #6b5430;
  }

  #rc-breathing-app .rcb-safety-inline strong {
    display: block;
    margin-bottom: 5px;
  }

  #rc-breathing-app .rcb-action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
  }

  #rc-breathing-app .rcb-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 12px 20px;
    border: 1px solid transparent;
    border-radius: var(--rcb-radius-md);
    font-weight: 750;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
  }

  #rc-breathing-app .rcb-button--primary {
    background: var(--rcb-navy);
    color: #ffffff;
    box-shadow: 0 10px 24px rgba(0, 59, 93, 0.18);
  }

  #rc-breathing-app .rcb-button--primary:hover {
    background: var(--rcb-navy-dark);
  }

  #rc-breathing-app .rcb-button--secondary {
    border-color: var(--rcb-line);
    background: #ffffff;
    color: var(--rcb-navy);
  }

  #rc-breathing-app .rcb-button--quiet {
    border-color: transparent;
    background: transparent;
    color: var(--rcb-muted);
  }

  #rc-breathing-app .rcb-button--natural {
    border-color: rgba(157, 59, 59, 0.22);
    background: #fff8f8;
    color: #843232;
  }

  #rc-breathing-app .rcb-button:disabled {
    background: #d8e0e4;
    color: #75838c;
    box-shadow: none;
    cursor: not-allowed;
  }

  #rc-breathing-app .rcb-session-screen {
    max-width: 840px;
    margin: 0 auto;
  }

  #rc-breathing-app .rcb-session-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 18px;
  }

  #rc-breathing-app .rcb-back-button {
    min-height: 44px;
    padding: 8px 0;
    border: 0;
    background: transparent;
    color: var(--rcb-muted);
    font-weight: 700;
    cursor: pointer;
  }

  #rc-breathing-app .rcb-session-name {
    color: var(--rcb-navy);
    font-size: 0.9rem;
    font-weight: 750;
    text-align: right;
  }

  #rc-breathing-app .rcb-session-card {
    --rcb-phase-color: var(--rcb-teal);
    position: relative;
    overflow: hidden;
    padding: 28px;
    border: 1px solid var(--rcb-line);
    border-radius: var(--rcb-radius-xl);
    background: rgba(255, 255, 255, 0.94);
    text-align: center;
  }

  #rc-breathing-app .rcb-session-card[data-rcb-phase="inhale"] { --rcb-phase-color: #2b8990; }
  #rc-breathing-app .rcb-session-card[data-rcb-phase="hold-full"] { --rcb-phase-color: #6e7f91; }
  #rc-breathing-app .rcb-session-card[data-rcb-phase="exhale"] { --rcb-phase-color: #003b5d; }
  #rc-breathing-app .rcb-session-card[data-rcb-phase="hold-empty"] { --rcb-phase-color: #b07b2e; }

  #rc-breathing-app .rcb-cycle-line {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    color: var(--rcb-muted);
    font-size: 0.78rem;
    font-weight: 700;
  }

  #rc-breathing-app .rcb-overall-track {
    width: 100%;
    height: 5px;
    margin: 10px 0 18px;
    overflow: hidden;
    border-radius: 999px;
    background: var(--rcb-navy-soft);
  }

  #rc-breathing-app .rcb-overall-fill {
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: var(--rcb-navy);
  }

  #rc-breathing-app .rcb-visual-wrap {
    position: relative;
    width: min(76vw, 390px);
    max-width: 100%;
    aspect-ratio: 1;
    margin: 2px auto 8px;
  }

  #rc-breathing-app .rcb-breathing-svg {
    display: block;
    width: 100%;
    height: 100%;
    overflow: visible;
  }

  #rc-breathing-app .rcb-geometry-track,
  #rc-breathing-app .rcb-geometry-progress {
    fill: none;
    stroke-width: 12;
    stroke-linecap: round;
    stroke-linejoin: round;
    vector-effect: non-scaling-stroke;
  }

  #rc-breathing-app .rcb-geometry-track {
    stroke: #dce8ed;
  }

  #rc-breathing-app .rcb-geometry-progress {
    stroke: var(--rcb-phase-color);
    filter: drop-shadow(0 7px 9px rgba(0, 59, 93, 0.16));
  }

  #rc-breathing-app .rcb-marker {
    fill: var(--rcb-phase-color);
    stroke: var(--rcb-phase-color);
    stroke-width: 2;
    vector-effect: non-scaling-stroke;
    filter: drop-shadow(0 4px 6px rgba(0, 59, 93, 0.22));
  }

  #rc-breathing-app .rcb-visual-center {
    position: absolute;
    inset: 0;
    display: grid;
    place-content: center;
    padding: 25%;
    pointer-events: none;
  }

  #rc-breathing-app .rcb-countdown {
    display: block;
    color: var(--rcb-navy);
    font-size: clamp(3.2rem, 13vw, 5.6rem);
    font-weight: 760;
    line-height: 0.95;
    letter-spacing: -0.06em;
  }

  #rc-breathing-app .rcb-seconds-label {
    display: block;
    margin-top: 7px;
    color: var(--rcb-muted);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  #rc-breathing-app .rcb-phase-label {
    margin: 0;
    color: var(--rcb-phase-color);
    font-size: clamp(1.55rem, 5vw, 2.15rem);
    line-height: 1.15;
  }

  #rc-breathing-app .rcb-phase-hint {
    min-height: 25px;
    margin: 8px 0 0;
    color: var(--rcb-muted);
    font-size: 0.9rem;
  }

  #rc-breathing-app .rcb-pause-notice {
    display: none;
    margin: 14px auto 0;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--rcb-navy-soft);
    color: var(--rcb-navy);
    font-size: 0.78rem;
    font-weight: 750;
  }

  #rc-breathing-app .rcb-session-card[data-rcb-status="paused"] .rcb-pause-notice {
    display: inline-flex;
  }

  #rc-breathing-app .rcb-session-controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
  }

  #rc-breathing-app .rcb-natural-row {
    display: flex;
    justify-content: center;
    margin-top: 12px;
  }

  #rc-breathing-app .rcb-finish {
    max-width: 650px;
    margin: 18px auto;
    padding: clamp(28px, 6vw, 54px);
    border: 1px solid var(--rcb-line);
    border-radius: var(--rcb-radius-xl);
    background: rgba(255, 255, 255, 0.94);
    text-align: center;
  }

  #rc-breathing-app .rcb-finish-icon {
    display: grid;
    place-items: center;
    width: 84px;
    height: 84px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: var(--rcb-navy-soft);
    color: var(--rcb-navy);
  }

  #rc-breathing-app .rcb-finish-icon svg {
    width: 46px;
    height: 46px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
  }

  #rc-breathing-app .rcb-finish h2 {
    margin: 0;
    color: var(--rcb-navy);
    font-size: clamp(1.7rem, 5vw, 2.25rem);
  }

  #rc-breathing-app .rcb-finish p {
    margin: 12px auto 0;
    color: var(--rcb-muted);
  }

  #rc-breathing-app .rcb-finish .rcb-action-row {
    justify-content: center;
  }

  #rc-breathing-app .rcb-footer-note {
    margin: 0;
    padding: 16px 38px 19px;
    border-top: 1px solid var(--rcb-line);
    color: var(--rcb-muted);
    font-size: 0.74rem;
    text-align: center;
  }

  #rc-breathing-app .rcb-dialog {
    width: min(560px, calc(100% - 28px));
    max-height: min(720px, calc(100vh - 28px));
    padding: 24px;
    border: 0;
    border-radius: var(--rcb-radius-lg);
    background: #ffffff;
    color: var(--rcb-ink);
    box-shadow: 0 28px 80px rgba(0, 32, 51, 0.28);
  }

  #rc-breathing-app .rcb-dialog::backdrop {
    background: rgba(0, 36, 56, 0.62);
    backdrop-filter: blur(3px);
  }

  #rc-breathing-app .rcb-dialog-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
  }

  #rc-breathing-app .rcb-dialog h2 {
    margin: 0;
    color: var(--rcb-navy);
    font-size: 1.45rem;
  }

  #rc-breathing-app .rcb-dialog p {
    margin: 18px 0 0;
    color: var(--rcb-muted);
    line-height: 1.7;
  }

  #rc-breathing-app .rcb-dialog-close {
    width: 100%;
    margin-top: 22px;
  }

  #rc-breathing-app .rcb-sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
  }

  #rc-breathing-app .rcb-error {
    padding: 20px;
    border: 1px solid #e7c5c5;
    border-radius: var(--rcb-radius-lg);
    background: #fff7f7;
    color: #7b2e2e;
  }

  @media (max-width: 760px) {
    #rc-breathing-app {
      margin: 12px auto;
    }

    #rc-breathing-app .rcb-shell {
      border-radius: 22px;
    }

    #rc-breathing-app .rcb-header,
    #rc-breathing-app .rcb-view {
      padding-left: 20px;
      padding-right: 20px;
    }

    #rc-breathing-app .rcb-header {
      padding-top: 24px;
      padding-bottom: 22px;
    }

    #rc-breathing-app .rcb-view {
      padding-top: 24px;
      padding-bottom: 26px;
    }

    #rc-breathing-app .rcb-exercise-grid,
    #rc-breathing-app .rcb-config-layout {
      grid-template-columns: 1fr;
    }

    #rc-breathing-app .rcb-session-card {
      padding: 20px 16px;
    }

    #rc-breathing-app .rcb-footer-note {
      padding-left: 20px;
      padding-right: 20px;
    }
  }

  @media (max-width: 460px) {
    #rc-breathing-app .rcb-header {
      gap: 10px;
    }

    #rc-breathing-app .rcb-icon-button {
      width: 44px;
      height: 44px;
    }

    #rc-breathing-app .rcb-family-grid {
      gap: 8px;
    }

    #rc-breathing-app .rcb-family-button {
      min-height: 100px;
      padding: 13px 6px;
      border-radius: 16px;
    }

    #rc-breathing-app .rcb-family-icon {
      width: 36px;
      height: 36px;
    }

    #rc-breathing-app .rcb-family-name {
      font-size: 0.78rem;
    }

    #rc-breathing-app .rcb-custom-grid,
    #rc-breathing-app .rcb-metrics {
      grid-template-columns: 1fr;
    }

    #rc-breathing-app .rcb-field-label {
      min-height: auto;
    }

    #rc-breathing-app .rcb-session-top {
      align-items: flex-start;
    }

    #rc-breathing-app .rcb-session-name {
      max-width: 52%;
    }

    #rc-breathing-app .rcb-session-controls .rcb-button,
    #rc-breathing-app .rcb-natural-row .rcb-button {
      width: 100%;
    }

    #rc-breathing-app .rcb-finish .rcb-button {
      width: 100%;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    #rc-breathing-app *,
    #rc-breathing-app *::before,
    #rc-breathing-app *::after {
      scroll-behavior: auto !important;
      transition-duration: 0.001ms !important;
    }

    #rc-breathing-app .rcb-marker {
      display: none;
    }

    #rc-breathing-app .rcb-geometry-progress {
      filter: none;
    }
  }

  @media (forced-colors: active) {
    #rc-breathing-app .rcb-family-button[aria-pressed="true"],
    #rc-breathing-app .rcb-duration-button[aria-pressed="true"],
    #rc-breathing-app .rcb-exercise-card[aria-pressed="true"] {
      outline: 3px solid ButtonText;
    }
  }