.hearing-tool {
    margin: 1.4rem 0 1.6rem;
    border: 1px solid var(--border);
    border-radius: 1rem;
    background: linear-gradient(165deg, var(--card-top), var(--card-bottom));
    box-shadow: var(--shadow);
    overflow: hidden;
}

.hearing-tool-head {
    padding: 1rem 1.1rem .75rem;
    border-bottom: 1px solid var(--border);
}

.hearing-tool-head h3 {
    margin: 0 0 .35rem;
    font-size: 1.15rem;
    color: var(--article-strong);
}

.hearing-tool-head p {
    margin: 0;
    color: var(--article-byline);
    font-size: .92rem;
    text-align: left;
}

.hearing-tool-body {
    padding: 1rem 1.1rem 1.2rem;
    display: grid;
    gap: 1rem;
}

.hearing-wave-wrap {
    position: relative;
    border: 1px solid var(--border);
    border-radius: .85rem;
    background: rgba(0, 0, 0, .22);
    overflow: hidden;
    min-height: 160px;
}

[data-theme="light"] .hearing-wave-wrap {
    background: rgba(18, 20, 32, .06);
}

.hearing-wave-wrap canvas {
    display: block;
    width: 100%;
    height: 160px;
}

.hearing-readouts {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: .65rem;
}

.hearing-stat {
    border: 1px solid var(--border);
    border-radius: .75rem;
    padding: .7rem .8rem;
    background: var(--table-surface);
    text-align: center;
}

.hearing-stat .label {
    display: block;
    font-size: .72rem;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--article-byline);
    margin-bottom: .25rem;
}

.hearing-stat .value {
    display: block;
    font-size: clamp(1.15rem, 3vw, 1.55rem);
    font-weight: 800;
    color: var(--article-strong);
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
}

.hearing-stat .unit {
    font-size: .78rem;
    font-weight: 600;
    color: var(--article-byline);
    margin-left: .15rem;
}

.hearing-controls {
    display: grid;
    gap: .85rem;
}

.hearing-control label {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: .5rem;
    color: var(--article-strong);
    font-weight: 700;
    font-size: .92rem;
    margin-bottom: .35rem;
}

.hearing-control input[type="range"] {
    width: 100%;
    accent-color: var(--accent-2, #30d5c8);
    cursor: pointer;
}

.hearing-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
    align-items: center;
}

.hearing-btn {
    border: 1px solid var(--border);
    border-radius: .75rem;
    padding: .7rem 1.05rem;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    color: var(--article-strong);
    background: var(--table-surface);
}

.hearing-btn-primary {
    background: var(--accent-2, #30d5c8);
    border-color: transparent;
    color: #0b1a1a;
}

.hearing-btn-primary:hover {
    filter: brightness(1.05);
}

.hearing-btn:disabled {
    opacity: .55;
    cursor: not-allowed;
}

.hearing-age-box {
    border: 1px solid var(--border);
    border-radius: .85rem;
    padding: .95rem 1rem;
    background: var(--table-title-bg);
}

.hearing-age-box h4 {
    margin: 0 0 .45rem;
    font-size: 1rem;
    color: var(--table-title-text);
}

.hearing-age-box p {
    margin: 0 0 .55rem;
    text-align: left;
    color: var(--article-text);
    font-size: .95rem;
}

.hearing-age-number {
    font-size: clamp(1.8rem, 5vw, 2.4rem);
    font-weight: 800;
    color: var(--article-strong);
    line-height: 1;
}

.hearing-age-number span {
    font-size: .95rem;
    font-weight: 600;
    color: var(--article-byline);
}

.hearing-warn {
    margin: 0;
    font-size: .86rem;
    color: var(--table-note);
    text-align: left;
}

.hearing-checklist {
    margin: 0;
    padding-left: 1.15rem;
    color: var(--article-text);
    font-size: .92rem;
}

.hearing-checklist li {
    margin-bottom: .35rem;
    text-align: left;
}

.hearing-age-box.is-hidden,
.hearing-btn.is-hidden {
    display: none !important;
}

.hearing-result-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .65rem;
    margin: .75rem 0;
}

.hearing-chart-wrap {
    margin: 1rem 0;
    border: 1px solid var(--border);
    border-radius: .85rem;
    padding: .75rem;
    background: var(--table-surface);
}

.hearing-chart-wrap canvas {
    display: block;
    width: 100%;
    height: 260px;
}

.hearing-share-modal {
    position: fixed;
    inset: 0;
    z-index: 80;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: rgba(0, 0, 0, .55);
}

.hearing-share-modal.is-open {
    display: flex;
}

.hearing-share-card {
    width: min(440px, 100%);
    border: 1px solid var(--border);
    border-radius: 1rem;
    background: var(--surface, #121420);
    padding: 1.15rem;
    box-shadow: 0 18px 50px rgba(0, 0, 0, .35);
}

.hearing-share-card h3 {
    margin: 0 0 .5rem;
    color: var(--article-strong);
}

.hearing-share-card label {
    display: block;
    margin: .75rem 0 .35rem;
    font-weight: 700;
    color: var(--article-strong);
    font-size: .92rem;
}

.hearing-share-card input,
.hearing-share-card textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: .7rem;
    padding: .7rem .8rem;
    font: inherit;
    color: var(--text);
    background: var(--table-surface);
}

.hearing-share-card textarea {
    min-height: 150px;
    resize: vertical;
}

.hearing-share-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .55rem;
    margin-top: .9rem;
}

@media (max-width: 640px) {
    .hearing-readouts {
        grid-template-columns: 1fr;
    }

    .hearing-result-grid {
        grid-template-columns: 1fr;
    }

    .hearing-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hearing-btn {
        width: 100%;
        text-align: center;
    }
}