:root {
    --schema-canvas: #f7f8fa;
    --schema-surface: #ffffff;
    --schema-soft: #f2f5f7;
    --schema-selected: #eef6f6;
    --schema-selected-border: #6f98a7;
    --schema-warm: #faf7f1;
    --schema-border: #d7e0e6;
    --schema-muted: #5b6873;
}

@media (prefers-color-scheme: dark) {
    body.schema-chemistry-page {
        --schema-canvas: var(--color-background);
        --schema-surface: var(--color-surface);
        --schema-soft: var(--color-primary-lighter);
        --schema-selected: #243747;
        --schema-selected-border: var(--color-primary);
        --schema-warm: #292820;
        --schema-border: var(--color-border);
        --schema-muted: var(--color-text-light);
    }
}

body.schema-chemistry-page {
    padding-top: calc(var(--header-height, 4.0625rem) + env(safe-area-inset-top, 0px));
    padding-bottom: calc(4.5rem + env(safe-area-inset-bottom, 0px));
    background: var(--schema-canvas);
}

.schema-chemistry-page .container {
    width: min(100% - 2rem, var(--width-tool-container, 48rem));
    margin-inline: auto;
    padding: 0 0 5rem;
}

.schema-chemistry-page .page-header {
    width: min(100% - 2rem, var(--width-tool-container, 48rem));
    margin: clamp(1.25rem, 3vw, 2rem) auto 1.25rem;
    padding: 0;
    text-align: center;
}

body.site-tools-page.schema-chemistry-page > .page-header {
    width: 100%;
}

.schema-chemistry-page .page-header h1 {
    margin: 0;
    color: var(--color-primary-dark);
    font-size: clamp(1.65rem, 5vw, 2.25rem);
    line-height: 1.3;
    word-break: keep-all;
}

.schema-chemistry-page .page-header p {
    margin: 0.55rem 0 0;
    color: var(--color-text-light);
    font-size: clamp(0.94rem, 2.5vw, 1.05rem);
    line-height: 1.65;
    word-break: keep-all;
}

.schema-chemistry-page .page-header p strong {
    display: block;
    margin-bottom: 0.18rem;
    color: var(--color-primary-dark);
}

.schema-chemistry-page .card {
    overflow: visible;
    border: 1px solid var(--schema-border);
    border-radius: 1.1rem;
    background: var(--schema-surface);
    box-shadow: none;
}

.schema-chemistry-page .card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: clamp(1.15rem, 3vw, 1.5rem) clamp(1rem, 3.5vw, 1.5rem);
    border: 0;
    background: transparent;
}

.schema-chemistry-page .card-title {
    margin: 0;
    color: var(--color-primary-dark);
    font-size: clamp(1.12rem, 3vw, 1.35rem);
    line-height: 1.45;
    word-break: keep-all;
}

.schema-chemistry-page .card-body {
    padding: 0 clamp(1rem, 3.5vw, 1.5rem) clamp(1.25rem, 4vw, 1.75rem);
}

.schema-chemistry-page .inline-emoji {
    display: inline-block;
    margin-right: 0.28rem;
    font-size: 1.35em;
    line-height: 1;
    vertical-align: -0.1em;
}

.schema-chemistry-page .intro-card__header {
    align-items: flex-start;
}

body.tool-standard-ui.schema-chemistry-page #intro-card > .intro-card__header {
    display: flex !important;
}

.schema-chemistry-page .intro-lead {
    margin: 0;
    color: var(--color-text-dark);
    font-size: clamp(1.05rem, 2.8vw, 1.2rem);
    font-weight: 700;
    line-height: 1.65;
    word-break: keep-all;
}

.schema-chemistry-page .intro-copy,
.schema-chemistry-page .intro-definition {
    margin: 0.65rem 0 0;
    color: var(--color-text-light);
    line-height: 1.75;
    word-break: keep-all;
}

.schema-chemistry-page .intro-points {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin: 1.25rem 0;
    padding: 0;
    list-style: none;
}

.schema-chemistry-page .intro-points li {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: start;
    gap: 0.2rem 0.65rem;
    min-width: 0;
    padding: 1rem;
    border: 0;
    border-radius: 0.85rem;
    background: var(--schema-soft);
}

.schema-chemistry-page .intro-points li > span:first-child {
    grid-row: 1 / span 2;
    font-size: 1.55rem;
    line-height: 1.2;
}

.schema-chemistry-page .intro-points strong {
    color: var(--color-primary-dark);
    line-height: 1.45;
}

.schema-chemistry-page .intro-points strong + span {
    color: var(--schema-muted);
    font-size: 0.9rem;
    line-height: 1.55;
    word-break: keep-all;
}

.schema-chemistry-page .intro-definition {
    padding: 1rem;
    border-radius: 0.85rem;
    background: var(--schema-warm);
    color: var(--color-text);
}

.schema-chemistry-page .intro-start-row {
    display: flex;
    justify-content: center;
    margin-top: 1.25rem;
}

.schema-chemistry-page .intro-start-button {
    min-width: min(100%, 13rem);
    min-height: 3rem;
}

.schema-chemistry-page .evidence-note {
    margin-top: 1.25rem;
    padding: 0;
    border: 0;
    background: transparent;
}

.schema-chemistry-page .evidence-note summary {
    display: flex;
    align-items: center;
    min-height: 2.75rem;
    padding-inline: 1rem;
    color: var(--color-primary-dark);
    font-weight: 700;
    cursor: pointer;
}

.schema-chemistry-page .evidence-note__text {
    padding: 0.85rem 1rem;
    border-radius: 0.8rem;
    background: var(--schema-soft);
    color: var(--schema-muted);
    font-size: 0.86rem;
    line-height: 1.7;
}

.schema-chemistry-page .evidence-note__text p + p {
    margin-top: 0.65rem;
}

.schema-chemistry-page .evidence-note a {
    display: inline;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: none;
    color: var(--color-primary-dark);
    font-weight: 600;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.16em;
}

.schema-chemistry-page .tool-progress {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.schema-chemistry-page .tool-progress__item {
    min-width: 0;
    word-break: keep-all;
}

.schema-chemistry-page .domain-fieldset {
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
}

.schema-chemistry-page .domain-instruction {
    width: 100%;
    margin: 0 0 1rem;
    padding: 0;
    color: var(--color-text-light);
    line-height: 1.65;
}

.schema-chemistry-page .domain-selection-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
}

.schema-chemistry-page .domain-option,
.schema-chemistry-page .rating-option {
    position: relative;
    min-width: 0;
}

.schema-chemistry-page .domain-option > input,
.schema-chemistry-page .rating-option > input {
    position: absolute !important;
    z-index: 2;
    inset: 0;
    inline-size: 100% !important;
    block-size: 100% !important;
    min-inline-size: 100% !important;
    min-block-size: 100% !important;
    margin: 0 !important;
    opacity: 0 !important;
    cursor: pointer;
}

.schema-chemistry-page .domain-btn {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    min-height: 8.25rem;
    padding: 1rem 2rem 1rem 1rem;
    border: 1px solid var(--schema-border);
    border-radius: 0.85rem;
    background: var(--schema-surface);
    color: var(--color-text-dark);
    text-align: center;
    transition: border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
}

.schema-chemistry-page .domain-icon {
    font-size: 2.35rem;
    line-height: 1.1;
}

.schema-chemistry-page .domain-btn strong {
    line-height: 1.4;
    word-break: keep-all;
}

.schema-chemistry-page .domain-btn::after {
    content: "";
    position: absolute;
    top: 0.72rem;
    right: 0.92rem;
    width: 0.55rem;
    height: 0.9rem;
    border: 0 solid currentColor;
    border-right-width: 0.16rem;
    border-bottom-width: 0.16rem;
    color: var(--color-primary-dark);
    opacity: 0;
    transform: rotate(45deg);
}

.schema-chemistry-page .domain-option:has(input:checked) .domain-btn {
    border-color: var(--schema-selected-border);
    background: var(--schema-selected);
    color: var(--color-primary-dark);
    box-shadow: inset 0 0 0 1px var(--schema-selected-border);
}

.schema-chemistry-page .domain-option:has(input:checked) .domain-btn::after {
    opacity: 1;
}

.schema-chemistry-page .domain-option:has(input:focus-visible) .domain-btn,
.schema-chemistry-page .rating-option:has(input:focus-visible) .rating-label {
    outline: 3px solid var(--focus-ring-color, #8fb5ce);
    outline-offset: 3px;
}

.schema-chemistry-page .question-card__header {
    padding-bottom: 0.65rem;
}

.schema-chemistry-page .question-progress {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.8rem;
    margin: 1rem 0;
}

.schema-chemistry-page .question-timeframe-note {
    margin: 1rem 0 0;
    padding: 0.85rem 1rem;
    border-radius: 0.8rem;
    background: var(--schema-soft);
    color: var(--schema-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    word-break: keep-all;
}

.schema-chemistry-page .question-progress__track {
    height: 0.55rem;
    overflow: hidden;
    border-radius: 999px;
    background: var(--schema-soft);
}

.schema-chemistry-page #question-progress-bar {
    display: block;
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: var(--color-primary);
    transition: width 0.25s ease;
}

.schema-chemistry-page .question-progress__text {
    color: var(--color-primary-dark);
    font-size: 0.9rem;
    font-weight: 700;
}

.schema-chemistry-page .question-support-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 0.75rem;
}

html body.tool-standard-ui.schema-chemistry-page main #question-card .question-support-actions:has(#back-to-domain-btn) {
    display: flex !important;
    min-height: auto !important;
    margin: 0 0 0.75rem !important;
    padding: 0 !important;
}

html body.tool-standard-ui.schema-chemistry-page main #question-card #back-to-domain-btn {
    display: inline-flex !important;
}

.schema-chemistry-page #back-to-domain-btn {
    min-height: 2.75rem;
}

.schema-chemistry-page .question {
    padding: clamp(1rem, 3vw, 1.35rem);
    border: 0;
    border-radius: 1rem;
    background: var(--schema-soft);
}

.schema-chemistry-page .question-header {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: start;
    gap: 0.85rem;
}

.schema-chemistry-page .question-category-emoji {
    font-size: 2.25rem;
    line-height: 1.1;
}

.schema-chemistry-page .question-title-text-container {
    min-width: 0;
}

.schema-chemistry-page .question-category-title {
    display: block;
    margin-bottom: 0.35rem;
    color: var(--color-primary-dark);
    font-size: 0.84rem;
    font-weight: 800;
}

.schema-chemistry-page .question-title-text {
    margin: 0;
    color: var(--color-text-dark);
    font-size: clamp(1.02rem, 2.8vw, 1.16rem);
    line-height: 1.75;
    word-break: keep-all;
}

.schema-chemistry-page .question-title-text strong {
    color: var(--color-primary-dark);
    font-weight: 800;
}

.schema-chemistry-page .rating-options {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.55rem;
    margin-top: 1.25rem;
}

.schema-chemistry-page .rating-label {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 0.45rem;
    min-height: 4.75rem;
    padding: 0.75rem 0.9rem;
    border: 1px solid var(--schema-border);
    border-radius: 0.75rem;
    background: var(--schema-surface);
    color: var(--color-text);
    text-align: left;
    transition: border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
}

.schema-chemistry-page .rating-marker {
    color: var(--color-primary);
    font-size: 1.7rem;
    font-weight: 800;
    line-height: 1;
}

.schema-chemistry-page .rating-text {
    font-size: 1rem;
    font-weight: 650;
    line-height: 1.4;
    word-break: keep-all;
}

.schema-chemistry-page .rating-option:has(input:checked) .rating-label {
    border-color: var(--schema-selected-border);
    background: var(--schema-selected);
    color: var(--color-primary-dark);
    font-weight: 800;
    box-shadow: inset 0 0 0 1px var(--schema-selected-border);
}

.schema-chemistry-page .rating-option:has(input:checked) .rating-marker {
    color: var(--color-primary-dark);
    transform: scale(1.12);
}

.schema-chemistry-page .nav-buttons-container {
    position: static;
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 1.25rem;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
}

.schema-chemistry-page .nav-buttons-container .btn {
    min-width: min(45%, 9rem);
    min-height: 2.9rem;
}

body.schema-chemistry-page #result-card {
    overflow: visible;
    border: 0 !important;
    border-radius: 0;
    background: transparent !important;
    box-shadow: none !important;
}

.schema-chemistry-page .result-card__header,
.schema-chemistry-page .result-card__body,
.schema-chemistry-page .result-restart-actions {
    padding-inline: 0;
}

.schema-chemistry-page .result-card__header {
    padding-top: 0;
}

.schema-chemistry-page .result-card__body {
    padding-bottom: 0;
}

.schema-chemistry-page .result-hero {
    padding: clamp(1.25rem, 4vw, 1.8rem);
    border: 0;
    border-radius: 1.1rem;
    background: var(--schema-surface);
    text-align: center;
}

.schema-chemistry-page .result-hero__icon {
    font-size: clamp(3rem, 10vw, 4.25rem);
    line-height: 1.1;
}

.schema-chemistry-page .result-domain-label {
    margin: 0.7rem 0 0;
    color: var(--color-primary-dark);
    font-size: 0.88rem;
    font-weight: 800;
}

.schema-chemistry-page .result-hero h3 {
    margin: 0.35rem 0 0;
    color: var(--color-text-dark);
    font-size: clamp(1.35rem, 4vw, 1.75rem);
    line-height: 1.45;
    word-break: keep-all;
}

.schema-chemistry-page #result-summary-text,
.schema-chemistry-page .result-limit-note {
    max-width: 38rem;
    margin: 0.65rem auto 0;
    line-height: 1.75;
    word-break: keep-all;
}

.schema-chemistry-page #result-summary-text {
    color: var(--color-text);
}

.schema-chemistry-page .result-formula {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 0.85rem 0 0;
    padding: 0.7rem 1rem;
    border-radius: 999px;
    background: var(--schema-warm);
    font-size: clamp(0.95rem, 3vw, 1.05rem);
    font-weight: 700;
    color: var(--color-text-dark);
}

.schema-chemistry-page .result-formula__term {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.schema-chemistry-page .result-formula__icon {
    font-size: 1.15em;
}

.schema-chemistry-page .result-formula__op {
    color: var(--schema-muted);
    font-weight: 400;
}

.schema-chemistry-page .result-formula__label {
    color: var(--color-primary-dark);
}

.schema-chemistry-page .result-limit-note {
    color: var(--schema-muted);
    font-size: 0.95rem;
}

.schema-chemistry-page .top-pattern-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin-top: 1.2rem;
    text-align: left;
}

.schema-chemistry-page .top-pattern-card {
    min-width: 0;
    padding: 1rem;
    border: 0;
    border-radius: 0.85rem;
    background: var(--schema-selected);
}

.schema-chemistry-page .top-pattern-card__heading,
.schema-chemistry-page .all-pattern-row__heading {
    display: grid;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-primary-dark);
}

.schema-chemistry-page .top-pattern-card__heading {
    grid-template-columns: auto minmax(0, 1fr);
}

.schema-chemistry-page .top-pattern-card__heading > span:last-child {
    grid-column: 2 / -1;
    justify-self: start;
}

.schema-chemistry-page .top-pattern-card__heading > span:first-child {
    font-size: 1.45rem;
}

.schema-chemistry-page .top-pattern-card__heading > span:last-child,
.schema-chemistry-page .all-pattern-row__heading > span {
    font-size: 0.86rem;
    font-weight: 800;
}

.schema-chemistry-page .additional-tie-note {
    grid-column: 1 / -1;
    margin: 0;
    color: var(--schema-muted);
    font-size: 0.88rem;
    text-align: center;
}

.schema-chemistry-page .response-summary {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.55rem;
    margin-top: 1.2rem;
    padding: 0;
}

.schema-chemistry-page .response-summary > div {
    min-width: 0;
    padding: 0.7rem 0.55rem;
    border-radius: 0.75rem;
    background: var(--schema-soft);
}

.schema-chemistry-page .response-summary dt {
    color: var(--schema-muted);
    font-size: 0.82rem;
    line-height: 1.4;
    word-break: keep-all;
}

.schema-chemistry-page .response-summary dd {
    margin: 0.25rem 0 0;
    color: var(--color-primary-dark);
    font-size: 1.15rem;
    font-weight: 800;
}

.schema-chemistry-page .today-action,
.schema-chemistry-page .result-section,
.schema-chemistry-page .result-details,
.schema-chemistry-page .next-tools-section {
    margin-top: 1rem;
    padding: clamp(1.1rem, 3.5vw, 1.5rem);
    border: 0;
    border-radius: 1rem;
    background: var(--schema-surface);
    box-shadow: none;
}

.schema-chemistry-page .today-action {
    background: var(--schema-warm);
}

.schema-chemistry-page .today-action h3,
.schema-chemistry-page .result-section h3,
.schema-chemistry-page .next-tools-section h3 {
    margin: 0;
    color: var(--color-primary-dark);
    font-size: clamp(1.05rem, 3vw, 1.2rem);
    line-height: 1.5;
    word-break: keep-all;
}

.schema-chemistry-page .today-action p,
.schema-chemistry-page .result-section > p {
    margin: 0.65rem 0 0;
    line-height: 1.75;
    word-break: keep-all;
}

.schema-chemistry-page .today-action-list {
    display: grid;
    gap: 0.65rem;
    margin: 0.7rem 0 0;
    padding-left: 1.25rem;
    line-height: 1.75;
}

.schema-chemistry-page .strong-scenes-list {
    display: grid;
    gap: 0.65rem;
    margin: 0.85rem 0 0;
    padding: 0;
    list-style: none;
}

.schema-chemistry-page .strong-scenes-list li {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0.7rem;
    padding: 0.85rem;
    border: 0;
    border-radius: 0.75rem;
    background: var(--schema-soft);
    line-height: 1.7;
    word-break: keep-all;
}

.schema-chemistry-page .strong-scenes-list li > span:first-child {
    font-size: 1.4rem;
}

.schema-chemistry-page .strong-scenes-empty {
    display: block !important;
    color: var(--schema-muted);
}

.schema-chemistry-page .result-details summary {
    display: flex;
    align-items: center;
    min-height: 2.75rem;
    color: var(--color-primary-dark);
    font-weight: 800;
    cursor: pointer;
}

.schema-chemistry-page .all-pattern-list {
    display: grid;
    gap: 0.65rem;
    margin-top: 0.8rem;
}

.schema-chemistry-page .all-pattern-row {
    padding: 0.9rem;
    border: 0;
    border-radius: 0.75rem;
    background: var(--schema-soft);
}

.schema-chemistry-page .all-pattern-row__heading {
    grid-template-columns: minmax(0, 1fr) auto;
}

.schema-chemistry-page .response-distribution {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.45rem;
    margin: 0.75rem 0 0;
}

.schema-chemistry-page .response-distribution > div {
    min-width: 0;
    padding: 0.55rem 0.45rem;
    border-radius: 0.6rem;
    background: var(--schema-surface);
    text-align: center;
}

.schema-chemistry-page .response-distribution dt {
    color: var(--schema-muted);
    font-size: 0.78rem;
    line-height: 1.35;
    word-break: keep-all;
}

.schema-chemistry-page .response-distribution dd {
    margin: 0.2rem 0 0;
    color: var(--color-primary-dark);
    font-weight: 800;
}

.schema-chemistry-page .all-pattern-row p {
    margin: 0.55rem 0 0;
    color: var(--schema-muted);
    font-size: 0.88rem;
    line-height: 1.65;
    word-break: keep-all;
}

.schema-chemistry-page .response-map__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
    margin-top: 0.9rem;
}

.schema-chemistry-page .response-map article {
    min-width: 0;
    padding: 1rem;
    border: 0;
    border-radius: 0.8rem;
    background: var(--schema-soft);
}

.schema-chemistry-page .response-map article.today-standard {
    border-top: 0;
    border-left: 0;
    background: var(--schema-warm);
}

.schema-chemistry-page .response-map h4 {
    margin: 0;
    color: var(--color-primary-dark);
    font-size: 0.95rem;
    line-height: 1.5;
}

.schema-chemistry-page .response-map p,
.schema-chemistry-page .response-map ul {
    margin: 0.6rem 0 0;
    color: var(--color-text);
    font-size: 0.88rem;
    line-height: 1.7;
    word-break: keep-all;
}

.schema-chemistry-page .response-map ul {
    padding-left: 1.1rem;
}

.schema-chemistry-page .response-map li + li {
    margin-top: 0.4rem;
}

.schema-chemistry-page .response-map .response-map__note {
    color: var(--schema-muted);
    font-size: 0.95rem;
}

.schema-chemistry-page .result-safety-note {
    margin-top: 1rem;
    padding: clamp(1.1rem, 3.5vw, 1.5rem);
    border-radius: 1rem;
    background: var(--schema-warm);
}

.schema-chemistry-page .result-safety-note h3 {
    margin: 0;
    color: var(--color-primary-dark);
    font-size: clamp(1.05rem, 3vw, 1.2rem);
    line-height: 1.5;
}

.schema-chemistry-page .result-safety-note p {
    margin: 0.65rem 0 0;
    line-height: 1.75;
    word-break: keep-all;
}

.schema-chemistry-page .result-safety-link {
    display: inline;
    min-height: 44px;
    margin-top: 0.35rem;
    padding: 0.55rem 0;
    border: 0;
    background: transparent;
    color: var(--color-primary-dark);
    font: inherit;
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 0.18em;
    cursor: pointer;
}

.schema-chemistry-page .result-safety-link:focus-visible {
    outline: 3px solid var(--focus-ring-color, #8fb5ce);
    outline-offset: 3px;
}

.schema-chemistry-page .next-tools-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.7rem;
    margin-top: 0.9rem;
}

.schema-chemistry-page .next-tool-card {
    display: grid;
    gap: 0.25rem;
    min-height: 4.75rem;
    padding: 1rem;
    border: 1px solid var(--schema-border);
    border-radius: 0.8rem;
    background: var(--schema-surface);
    color: var(--color-text);
    text-decoration: none;
    box-shadow: none;
    transition: border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
}

.schema-chemistry-page .next-tool-card strong {
    color: var(--color-primary-dark);
    line-height: 1.5;
}

.schema-chemistry-page .next-tool-card span {
    color: var(--schema-muted);
    font-size: 0.88rem;
    line-height: 1.6;
    word-break: keep-all;
}

.schema-chemistry-page .result-restart-actions {
    display: flex;
    justify-content: center;
    margin-top: 1.25rem;
}

.schema-chemistry-page #restart-btn {
    min-height: 3rem;
}

.schema-chemistry-page .toast-notification {
    position: fixed;
    z-index: var(--z-toast, 1400);
    left: 50%;
    bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
    max-width: min(calc(100% - 2rem), 28rem);
    padding: 0.8rem 1rem;
    border-radius: 0.75rem;
    background: var(--color-primary-dark);
    color: #fff;
    line-height: 1.5;
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, 0.5rem);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.schema-chemistry-page .toast-notification.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

@media (hover: hover) and (pointer: fine) {
    .schema-chemistry-page .domain-option:hover .domain-btn,
    .schema-chemistry-page .rating-option:hover .rating-label,
    .schema-chemistry-page .next-tool-card:hover {
        border-color: var(--schema-selected-border);
        background: var(--schema-selected);
        color: var(--color-primary-dark);
        box-shadow: none;
        transform: none;
    }

    .schema-chemistry-page .evidence-note a:hover {
        color: var(--color-primary);
    }
}

@media (max-width: 48rem) {
    .schema-chemistry-page .domain-selection-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    }

    .schema-chemistry-page .domain-btn {
        min-height: 7.5rem;
    }

    .schema-chemistry-page .rating-options {
        grid-template-columns: 1fr;
    }

    .schema-chemistry-page .rating-label {
        flex-direction: row;
        justify-content: flex-start;
        min-height: 3.5rem;
        padding: 0.65rem 0.9rem;
        text-align: left;
    }

    .schema-chemistry-page .rating-marker {
        flex: 0 0 2rem;
        text-align: center;
    }

    .schema-chemistry-page .rating-text {
        font-size: 0.9rem;
    }

    .schema-chemistry-page .response-map__grid {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 37.501rem) and (max-width: 48rem) {
    .schema-chemistry-page .rating-options {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    }

    .schema-chemistry-page .rating-label {
        flex-direction: row;
        justify-content: flex-start;
        min-height: 4.5rem;
        padding: 0.75rem 0.9rem;
        text-align: left;
    }

    .schema-chemistry-page .rating-text {
        font-size: 1rem;
    }
}

@media (max-width: 37.5rem) {
    body.schema-chemistry-page {
        padding-bottom: calc(4.5rem + env(safe-area-inset-bottom, 0px));
    }

    .schema-chemistry-page .container,
    .schema-chemistry-page .page-header {
        width: min(100% - 1.25rem, var(--width-tool-container, 48rem));
    }

    .schema-chemistry-page .intro-card__header {
        flex-direction: column;
    }

    .schema-chemistry-page .intro-points,
    .schema-chemistry-page .top-pattern-list {
        grid-template-columns: 1fr;
    }

    .schema-chemistry-page .tool-progress {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 0.35rem;
    }

    .schema-chemistry-page .tool-progress__item {
        min-height: 2.7rem;
        padding: 0.4rem 0.25rem;
        font-size: 0.82rem;
    }

    .schema-chemistry-page .domain-btn {
        min-height: 7rem;
        padding: 0.8rem 1.7rem 0.8rem 0.7rem;
    }

    .schema-chemistry-page .domain-icon {
        font-size: 2.05rem;
    }

    .schema-chemistry-page .question {
        padding: 0.95rem;
    }

    .schema-chemistry-page .question-category-emoji {
        font-size: 2rem;
    }

    .schema-chemistry-page .question-support-actions {
        justify-content: flex-start;
    }

    .schema-chemistry-page .nav-buttons-container {
        padding-inline-end: 3.5rem;
    }

    .schema-chemistry-page .nav-buttons-container .btn {
        min-width: 0;
        flex: 1 1 0;
    }

    .schema-chemistry-page .response-summary,
    .schema-chemistry-page .response-distribution {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 24.375rem) {
    .schema-chemistry-page .card-header,
    .schema-chemistry-page .card-body {
        padding-inline: 0.85rem;
    }

    .schema-chemistry-page .domain-selection-grid {
        gap: 0.6rem;
    }

    .schema-chemistry-page .domain-btn {
        min-height: 6.75rem;
        font-size: 0.9rem;
    }

    .schema-chemistry-page .result-hero,
    .schema-chemistry-page .today-action,
    .schema-chemistry-page .result-section,
    .schema-chemistry-page .result-details,
    .schema-chemistry-page .next-tools-section {
        padding: 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .schema-chemistry-page *,
    .schema-chemistry-page *::before,
    .schema-chemistry-page *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}

@media (forced-colors: active) {
    .schema-chemistry-page .domain-btn,
    .schema-chemistry-page .rating-label,
    .schema-chemistry-page .next-tool-card {
        border: 1px solid ButtonText;
    }

    .schema-chemistry-page .domain-option:has(input:checked) .domain-btn,
    .schema-chemistry-page .rating-option:has(input:checked) .rating-label {
        border: 3px solid Highlight;
        background: Canvas;
        color: CanvasText;
    }

    .schema-chemistry-page .question-progress__track,
    .schema-chemistry-page .pattern-gauge {
        border: 1px solid CanvasText;
    }

    .schema-chemistry-page #question-progress-bar,
    .schema-chemistry-page .pattern-gauge > span {
        background: Highlight;
    }
}

/* Keep the five-point radio scale, but present it with an easier-to-scan face cue. */
.schema-chemistry-page .rating-option:nth-child(1) { --rating-face: "🙂"; }
.schema-chemistry-page .rating-option:nth-child(2) { --rating-face: "😐"; }
.schema-chemistry-page .rating-option:nth-child(3) { --rating-face: "😕"; }
.schema-chemistry-page .rating-option:nth-child(4) { --rating-face: "😟"; }
.schema-chemistry-page .rating-option:nth-child(5) { --rating-face: "😣"; }
.schema-chemistry-page .rating-option:nth-child(6) { --rating-face: "🤔"; }

.schema-chemistry-page .rating-marker {
    display: block;
    width: 2.75rem;
    flex: 0 0 2.75rem;
    color: inherit;
    font-size: 0;
    line-height: 1;
    text-align: center;
}

.schema-chemistry-page .rating-marker::before {
    content: var(--rating-face);
    display: block;
    font-size: 2.35rem;
    line-height: 1;
}

.schema-chemistry-page .rating-option:has(input:checked) .rating-label {
    position: relative;
}

.schema-chemistry-page .rating-option:has(input:checked) .rating-label::after {
    content: "";
    position: absolute;
    top: 0.42rem;
    right: 0.72rem;
    width: 0.48rem;
    height: 0.78rem;
    border: 0 solid currentColor;
    border-right-width: 0.14rem;
    border-bottom-width: 0.14rem;
    transform: rotate(45deg);
}

.schema-chemistry-page .rating-option:has(input:checked) .rating-marker::before {
    transform: scale(1.08);
}