/* CalcSolver homepage product design refresh */

:root {
    --home-bg: #cbd9ea;
    --home-surface: rgba(242, 247, 255, 0.9);
    --home-surface-solid: #f2f7ff;
    --home-ink: #172033;
    --home-muted: #5d6b82;
    --home-soft: #d8e4f2;
    --home-line: rgba(31, 68, 120, 0.16);
    --home-accent: #2f6fbd;
    --home-accent-strong: #1e4f91;
    --home-success: #27756f;
    --home-shadow: rgba(38, 65, 105, 0.17);
    --home-motion: 420ms cubic-bezier(0.32, 0.72, 0, 1);
}

[data-theme="dark"] {
    --home-bg: #0e1726;
    --home-surface: rgba(19, 31, 51, 0.84);
    --home-surface-solid: #131f33;
    --home-ink: #f2f7ff;
    --home-muted: #a9b8cf;
    --home-soft: #1d2d47;
    --home-line: rgba(218, 231, 255, 0.15);
    --home-accent: #74a8f5;
    --home-accent-strong: #9fc2ff;
    --home-success: #6ed0c4;
    --home-shadow: rgba(0, 0, 0, 0.36);
}

body {
    background:
        linear-gradient(135deg, rgba(222, 232, 247, 0.86), rgba(190, 207, 227, 0.9)),
        var(--home-bg);
    color: var(--home-ink);
    font-family: Aptos, "Segoe UI", system-ui, sans-serif;
}

[data-theme="dark"] body {
    background:
        linear-gradient(135deg, rgba(19, 31, 51, 0.94), rgba(9, 17, 31, 0.96)),
        var(--home-bg);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: 0.24;
    background-image:
        linear-gradient(rgba(31, 68, 120, 0.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(31, 68, 120, 0.045) 1px, transparent 1px);
    background-size: 36px 36px;
}

[data-theme="dark"] body::before {
    opacity: 0.13;
    background-image:
        linear-gradient(rgba(245, 247, 239, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245, 247, 239, 0.06) 1px, transparent 1px);
}

.navbar {
    top: 12px;
    width: calc(100% - 32px);
    max-width: 1180px;
    margin: 0 auto;
    border: 1px solid var(--home-line);
    border-radius: 8px;
    background: rgba(242, 247, 255, 0.88);
    box-shadow: 0 18px 50px rgba(38, 65, 105, 0.13);
    backdrop-filter: blur(18px);
}

[data-theme="dark"] .navbar {
    background: rgba(21, 23, 19, 0.82);
}

.navbar-container {
    height: 62px;
    max-width: none;
    padding: 0 16px 0 20px;
}

.navbar-brand,
.hero-title {
    letter-spacing: 0;
}

.navbar-brand {
    color: var(--home-ink);
}

.navbar-brand .brand-solver {
    color: var(--home-accent);
    background: none;
    -webkit-text-fill-color: currentColor;
}

.nav-item > a {
    color: var(--home-muted);
    height: 62px;
}

.nav-item > a:hover,
.dropdown-menu a:hover {
    color: var(--home-accent-strong);
}

.dropdown-menu {
    border: 1px solid var(--home-line);
    border-radius: 8px;
    background: var(--home-surface-solid);
    box-shadow: 0 22px 52px var(--home-shadow);
}

.icon-btn {
    border: 1px solid var(--home-line);
    border-radius: 8px;
    background: var(--home-soft);
    color: var(--home-ink);
    transition: transform var(--home-motion), background var(--home-motion), color var(--home-motion);
}

.icon-btn:hover,
.icon-btn:focus-visible {
    background: var(--home-ink);
    color: var(--home-surface-solid);
    transform: translateY(-1px);
}

.home-page {
    width: 100%;
    align-items: stretch;
    padding: 48px 24px 72px;
}

.home-hero-section,
.calculator-info-section,
.usage-guide-section,
.seo-articles-section,
.faq-section,
.solve-map-section,
.worked-examples-section,
.comparison-section,
.topic-browse-section,
.function-reference-section,
.learning-path-section,
.mistakes-section,
.glossary-section {
    width: min(1180px, 100%);
    margin-left: auto;
    margin-right: auto;
}

.home-hero-section {
    width: calc(100% + 48px);
    margin-left: -24px;
    margin-right: -24px;
}

.home-hero-section {
    min-height: 0;
    display: grid;
    align-items: stretch;
    padding: 18px 0 56px;
}

.home-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
    align-items: start;
    justify-items: center;
}

.home-hero-copy {
    display: grid;
    justify-items: center;
    gap: 18px;
    max-width: 1060px;
    text-align: center;
}

.home-eyebrow,
.home-hero-actions,
.home-proof-grid,
.calculator-stage-header {
    display: none;
}

.home-eyebrow,
.section-kicker,
.calculator-stage-header {
    color: var(--home-accent-strong);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

.hero-title {
    max-width: none;
    margin: 0;
    color: var(--home-ink);
    font-size: 2.55rem;
    line-height: 1.12;
    text-wrap: balance;
}

.hero-description {
    max-width: 1040px;
    margin: 0;
    color: var(--home-muted);
    font-size: 1.08rem;
    line-height: 1.72;
}

.hero-description .highlight {
    color: var(--home-accent);
    font-weight: 800;
}

.home-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.home-primary-link,
.home-secondary-link {
    min-height: 46px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    transition: transform var(--home-motion), background var(--home-motion), color var(--home-motion), border-color var(--home-motion);
}

.home-primary-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 8px 8px 8px 18px;
    background: var(--home-ink);
    color: var(--home-surface-solid);
}

.home-primary-link span:last-child {
    display: grid;
    width: 30px;
    height: 30px;
    place-items: center;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.13);
}

.home-secondary-link {
    display: inline-flex;
    align-items: center;
    padding: 0 18px;
    border: 1px solid var(--home-line);
    color: var(--home-ink);
    background: rgba(255, 255, 255, 0.38);
}

.home-primary-link:hover,
.home-secondary-link:hover,
.home-primary-link:focus-visible,
.home-secondary-link:focus-visible {
    transform: translateY(-2px);
}

.home-secondary-link:hover,
.home-secondary-link:focus-visible {
    border-color: rgba(47, 111, 189, 0.5);
    color: var(--home-accent-strong);
}

.home-proof-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 4px;
}

.home-proof-grid div {
    min-width: 0;
    padding: 16px;
    border: 1px solid var(--home-line);
    border-radius: 8px;
    background: rgba(242, 247, 255, 0.7);
}

[data-theme="dark"] .home-proof-grid div,
[data-theme="dark"] .home-secondary-link {
    background: rgba(255, 255, 255, 0.05);
}

.home-proof-grid strong,
.home-proof-grid span {
    display: block;
}

.home-proof-grid strong {
    margin-bottom: 8px;
    color: var(--home-ink);
    font-size: 0.92rem;
}

.home-proof-grid span {
    color: var(--home-muted);
    font-size: 0.82rem;
    line-height: 1.55;
}

.ask-calcsolver-layout {
    display: grid;
    grid-template-columns: minmax(300px, 1fr) minmax(500px, 560px) minmax(300px, 1fr);
    gap: 0;
    width: 100%;
    height: min(760px, calc(100vh - 120px));
    min-height: 620px;
    align-items: start;
    background: var(--home-surface);
    box-shadow: none;
    backdrop-filter: none;
    overflow: hidden;
}

.ask-calcsolver-panel,
.ask-workspace,
.ask-side-panel {
    min-width: 0;
    height: 100%;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
}

[data-theme="dark"] .ask-calcsolver-layout {
    background: rgba(19, 31, 51, 0.82);
}

.ask-calcsolver-panel {
    display: grid;
    grid-template-rows: auto auto minmax(220px, 1fr) auto auto auto;
    gap: 16px;
    padding: 18px;
    min-height: 0;
    align-content: start;
    align-self: stretch;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.ask-workspace,
.ask-side-panel {
    border-left: 1px solid var(--home-line);
}

.ask-calcsolver-header {
    display: grid;
    gap: 5px;
}

.ask-calcsolver-kicker {
    margin: 0;
    color: var(--home-accent-strong);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

.ask-calcsolver-header h2,
.ask-workspace-header h2 {
    margin: 0;
    color: var(--home-ink);
    font-size: 1.18rem;
    line-height: 1.2;
}

.ask-calcsolver-header p:not(.ask-calcsolver-kicker) {
    margin: 0;
    color: var(--home-muted);
    font-size: 0.92rem;
    line-height: 1.55;
}

.ask-conversation {
    display: grid;
    align-content: start;
    gap: 10px;
    min-height: 180px;
    max-height: 320px;
    overflow-y: auto;
    padding: 2px 4px 2px 0;
}

.ask-message {
    max-width: 92%;
    padding: 10px 12px;
    border: 1px solid var(--home-line);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.45);
}

[data-theme="dark"] .ask-message {
    background: rgba(255, 255, 255, 0.05);
}

.ask-message p {
    margin: 0;
    color: var(--home-ink);
    font-size: 0.9rem;
    line-height: 1.48;
}

.ask-message-user {
    justify-self: end;
    border-color: rgba(47, 111, 189, 0.28);
    background: rgba(47, 111, 189, 0.12);
}

.ask-message-system {
    justify-self: start;
}

.ask-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    align-items: end;
}

.ask-form textarea {
    width: 100%;
    min-height: 74px;
    resize: vertical;
    border: 1px solid var(--home-line);
    border-radius: 8px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.7);
    color: var(--home-ink);
    font: inherit;
    line-height: 1.45;
    outline: none;
    transition: border-color var(--home-motion), box-shadow var(--home-motion), background var(--home-motion);
}

[data-theme="dark"] .ask-form textarea {
    background: rgba(255, 255, 255, 0.06);
}

.ask-form textarea:focus {
    border-color: rgba(47, 111, 189, 0.55);
    box-shadow: 0 0 0 3px rgba(47, 111, 189, 0.12);
}

.ask-form button,
.ask-clear-btn,
.ask-suggestions button,
.workspace-tab,
.ask-open-page,
.ask-inline-link,
.ask-calculator-card-header a,
.ask-alternative-list button {
    min-height: 38px;
    border: 1px solid var(--home-line);
    border-radius: 8px;
    font: inherit;
    font-weight: 800;
    letter-spacing: 0;
    text-decoration: none;
    transition: transform var(--home-motion), background var(--home-motion), color var(--home-motion), border-color var(--home-motion);
}

.ask-form button {
    padding: 0 14px;
    background: var(--home-ink);
    color: var(--home-surface-solid);
}

.ask-form button:hover,
.ask-form button:focus-visible,
.ask-clear-btn:hover,
.ask-clear-btn:focus-visible,
.ask-suggestions button:hover,
.ask-suggestions button:focus-visible,
.workspace-tab:hover,
.workspace-tab:focus-visible,
.ask-open-page:hover,
.ask-open-page:focus-visible,
.ask-inline-link:hover,
.ask-inline-link:focus-visible,
.ask-calculator-card-header a:hover,
.ask-calculator-card-header a:focus-visible,
.ask-alternative-list button:hover,
.ask-alternative-list button:focus-visible {
    transform: translateY(-1px);
}

.ask-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    color: var(--home-muted);
    font-size: 0.82rem;
}

.ask-suggestions span {
    font-weight: 800;
}

.ask-suggestions button,
.ask-clear-btn,
.workspace-tab,
.ask-open-page,
.ask-inline-link,
.ask-calculator-card-header a,
.ask-alternative-list button {
    background: rgba(255, 255, 255, 0.48);
    color: var(--home-ink);
}

[data-theme="dark"] .ask-suggestions button,
[data-theme="dark"] .ask-clear-btn,
[data-theme="dark"] .workspace-tab,
[data-theme="dark"] .ask-open-page,
[data-theme="dark"] .ask-inline-link,
[data-theme="dark"] .ask-calculator-card-header a,
[data-theme="dark"] .ask-alternative-list button {
    background: rgba(255, 255, 255, 0.06);
}

.ask-suggestions button {
    min-height: 32px;
    padding: 0 10px;
    font-size: 0.78rem;
}

.ask-clear-btn {
    justify-self: start;
    padding: 0 12px;
}

.ask-workspace {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    gap: 0;
    overflow: hidden;
}

.ask-workspace.home-calculator-stage {
    width: 100%;
    max-width: 560px;
    justify-self: center;
}

.ask-side-panel {
    display: grid;
    grid-template-rows: auto auto auto minmax(0, 1fr);
    gap: 0;
    overflow: hidden;
}

.ask-side-panel .workspace-panels {
    min-height: 0;
    overflow: hidden;
}

.ask-side-panel .workspace-panel {
    height: 100%;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.ask-workspace-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    padding: 18px 18px 12px;
}

.ask-open-page,
.ask-inline-link,
.ask-calculator-card-header a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 12px;
    color: var(--home-accent-strong);
}

.workspace-tabs {
    display: flex;
    gap: 8px;
    padding: 0 18px 14px;
    border-bottom: 1px solid var(--home-line);
}

.workspace-tab {
    padding: 0 13px;
    color: var(--home-muted);
}

.workspace-tab.active {
    border-color: rgba(47, 111, 189, 0.38);
    background: var(--home-ink);
    color: var(--home-surface-solid);
}

.workspace-panels {
    min-width: 0;
}

.ask-workspace .workspace-panels {
    min-height: 0;
    height: 100%;
    overflow: hidden;
}

.workspace-panel {
    min-width: 0;
    padding: 18px;
}

.ask-workspace .workspace-panel {
    height: 100%;
}

.ask-scientific-calculator {
    display: flex;
    justify-content: center;
    align-items: stretch;
    min-height: 0;
    height: 100%;
}

.ask-scientific-calculator .calculator-shell-frame {
    display: flex;
    flex-direction: column;
    max-width: 430px;
    width: 100%;
    height: 100%;
    margin: 0 auto;
}

.ask-dynamic-calculator.hidden,
.ask-scientific-calculator.hidden {
    display: none;
}

.ask-calculator-card,
.ask-empty-workspace,
.ask-side-content {
    display: grid;
    gap: 16px;
}

.ask-calculator-card-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: start;
}

.ask-calculator-card-header span {
    color: var(--home-accent-strong);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
}

.ask-calculator-card h3,
.ask-empty-workspace h3,
.ask-side-content h3 {
    margin: 0;
    color: var(--home-ink);
    font-size: 1.35rem;
    line-height: 1.2;
}

.ask-empty-workspace p,
.ask-side-content p {
    margin: 0;
    color: var(--home-muted);
    line-height: 1.65;
}

.ask-calculator-form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.ask-field {
    position: relative;
    display: grid;
    gap: 7px;
    color: var(--home-ink);
    font-weight: 800;
}

.ask-field span {
    font-size: 0.86rem;
}

.ask-field input {
    width: 100%;
    min-height: 46px;
    border: 1px solid var(--home-line);
    border-radius: 8px;
    padding: 10px 42px 10px 12px;
    background: rgba(255, 255, 255, 0.66);
    color: var(--home-ink);
    font: inherit;
    font-variant-numeric: tabular-nums;
    outline: none;
}

[data-theme="dark"] .ask-field input {
    background: rgba(255, 255, 255, 0.06);
}

.ask-field input:focus {
    border-color: rgba(47, 111, 189, 0.55);
    box-shadow: 0 0 0 3px rgba(47, 111, 189, 0.12);
}

.ask-field small {
    position: absolute;
    right: 12px;
    bottom: 13px;
    color: var(--home-muted);
    font-size: 0.76rem;
    font-weight: 800;
    pointer-events: none;
}

.ask-calculator-output {
    display: grid;
    gap: 14px;
}

.ask-result-card,
.ask-result-empty,
.ask-formula-card {
    border: 1px solid var(--home-line);
    border-radius: 10px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.5);
}

[data-theme="dark"] .ask-result-card,
[data-theme="dark"] .ask-result-empty,
[data-theme="dark"] .ask-formula-card {
    background: rgba(255, 255, 255, 0.05);
}

.ask-result-card {
    display: grid;
    gap: 6px;
}

.ask-result-label,
.ask-formula-card span {
    color: var(--home-muted);
    font-size: 0.78rem;
    font-weight: 800;
    text-transform: uppercase;
}

.ask-result-number {
    color: var(--home-accent-strong);
    font-size: 2rem;
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
}

.ask-result-card p,
.ask-result-empty p {
    margin: 0;
    color: var(--home-muted);
    line-height: 1.55;
}

.ask-breakdown {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin: 0;
}

.ask-breakdown div {
    min-width: 0;
    border-top: 1px solid var(--home-line);
    padding-top: 10px;
}

.ask-breakdown dt {
    color: var(--home-muted);
    font-size: 0.78rem;
}

.ask-breakdown dd {
    margin: 2px 0 0;
    color: var(--home-ink);
    font-weight: 900;
    font-variant-numeric: tabular-nums;
}

.ask-formula-card {
    display: grid;
    gap: 7px;
}

.ask-formula-card code {
    white-space: normal;
    color: var(--home-ink);
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    font-size: 0.9rem;
}

.ask-side-content h4 {
    margin: 2px 0 0;
    color: var(--home-ink);
    font-size: 0.95rem;
}

.ask-side-content section {
    display: grid;
    gap: 8px;
}

.ask-step-list {
    display: grid;
    gap: 9px;
    margin: 0;
    padding-left: 22px;
    color: var(--home-ink);
}

.ask-step-list li {
    padding-left: 4px;
    line-height: 1.55;
}

.ask-result-card.compact .ask-result-number {
    font-size: 1.45rem;
}

.ask-alternative-list {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
}

.ask-alternative-list button {
    padding: 0 12px;
    color: var(--home-accent-strong);
}

.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;
}

.home-eyebrow,
.home-hero-actions,
.home-proof-grid {
    display: none;
}

.home-calculator-stage {
    align-self: start;
    width: 100%;
    max-width: 480px;
}

.calculator-stage-header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin: 0 0 10px;
    color: var(--home-muted);
}

.calculator-stage-header span:last-child {
    color: var(--home-accent-strong);
    text-transform: none;
}

.calculator-stage-header {
    display: none;
}

.calculator-shell-frame {
    padding: 0;
    border: 0;
    border-radius: 24px;
    background: transparent;
    box-shadow:
        0 28px 76px rgba(38, 65, 105, 0.2),
        0 10px 34px rgba(38, 65, 105, 0.14);
}

[data-theme="dark"] .calculator-shell-frame {
    background:
        linear-gradient(145deg, rgba(31, 48, 78, 0.82), rgba(9, 17, 31, 0.88)),
        var(--home-surface);
    box-shadow:
        0 38px 80px var(--home-shadow),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.calculator-container {
    max-width: none;
    min-width: 0;
    border: 0;
    border-radius: 24px;
    background: #f5f5f7;
    box-shadow: none;
}

.ask-scientific-calculator .calculator-container {
    display: grid;
    grid-template-rows: minmax(132px, 0.34fr) auto minmax(0, 1fr);
    width: 100%;
    height: 100%;
    overflow: hidden;
}

[data-theme="dark"] .calculator-container {
    border-color: rgba(255, 255, 255, 0.08);
    background: #171914;
}

.display-area {
    min-height: 160px;
    padding: 56px 16px 22px;
    background: #1c1c1e;
}

.code-mode-btn {
    top: 14px;
    right: 16px;
    min-width: 150px;
    border: 0;
    background: transparent;
}

.expression-display,
.result-display {
    font-variant-numeric: tabular-nums;
}

.result-display {
    color: #7bd99f;
}

.mode-toggle {
    gap: 8px;
    padding: 8px 16px;
    background: #d8d8dc;
    border-bottom: 1px solid #c0c0c5;
}

.mode-btn,
.angle-btn {
    border-radius: 8px;
    color: var(--home-muted);
    transition: transform var(--home-motion), background var(--home-motion), color var(--home-motion);
}

.mode-btn.active,
.mode-btn:hover {
    background: #f5f5f7;
    color: #1d1d1f;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.angle-toggle {
    border: 0;
    border-radius: 12px;
    background: #f5f5f7;
}

[data-theme="dark"] .angle-toggle {
    background: rgba(255, 255, 255, 0.05);
}

.button-panel {
    padding: 16px;
}

.ask-scientific-calculator .button-panel {
    display: grid;
    min-height: 0;
}

.button-grid {
    gap: 8px;
}

.ask-scientific-calculator .button-grid {
    height: 100%;
    grid-template-rows: repeat(5, minmax(44px, 1fr));
}

.ask-scientific-calculator .scientific-grid {
    grid-template-rows: repeat(9, minmax(34px, 1fr));
}

.btn {
    height: 70px;
    border: 0;
    border-radius: 12px;
    font-weight: 500;
    transition: transform var(--home-motion), background var(--home-motion), box-shadow var(--home-motion), color var(--home-motion);
}

.ask-scientific-calculator .btn {
    height: 100%;
    min-height: 44px;
}

.btn-number {
    background: #f0f0f3;
    color: #1d1d1f;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.12);
}

.btn-number:hover,
.btn-function:hover,
.btn-constant:hover,
.btn-operator:hover,
.btn-equals:hover,
.btn-clear:hover {
    transform: translateY(-2px);
}

.btn-function {
    background: #a5a5a5;
    color: #ffffff;
}

.btn-operator {
    background: #ff9500;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(255, 149, 0, 0.3);
}

.btn-clear {
    background: #ff3b30;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(255, 59, 48, 0.3);
}

.btn-equals {
    background: #4cd964;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(76, 217, 100, 0.3);
}

.btn-constant,
.angle-btn.active {
    background: #ff9500;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(255, 149, 0, 0.26);
}

[data-theme="dark"] .btn-number {
    border-color: rgba(255, 255, 255, 0.08);
    background: #23271f;
    color: var(--home-ink);
}

[data-theme="dark"] .btn-function {
    background: #2d3329;
    color: #dce5d4;
}

.scientific-grid .btn {
    height: 52px;
    font-size: 0.86rem;
}

.calculator-info-section,
.usage-guide-section,
.seo-articles-section,
.faq-section,
.solve-map-section,
.worked-examples-section,
.comparison-section,
.topic-browse-section,
.function-reference-section,
.learning-path-section,
.mistakes-section,
.glossary-section {
    margin-top: 72px;
    padding: 0;
}

.calculator-info-section {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 10px;
}

.section-intro {
    display: grid;
    gap: 10px;
    max-width: 760px;
}

.section-intro,
.usage-guide-section .section-intro,
.seo-articles-section .section-intro,
.faq-section .section-intro,
.solve-map-section .section-intro,
.worked-examples-section .section-intro,
.topic-browse-section .section-intro,
.function-reference-section .section-intro,
.learning-path-section .section-intro,
.mistakes-section .section-intro,
.glossary-section .section-intro {
    margin-bottom: 20px;
}

.calculator-info-section .section-intro {
    grid-column: 1 / -1;
    max-width: 860px;
}

.section-title {
    margin: 0;
    color: var(--home-ink);
    font-size: 2.15rem;
    line-height: 1.14;
    letter-spacing: 0;
    text-wrap: balance;
}

.section-lead {
    margin: 0;
    color: var(--home-muted);
    font-size: 1rem;
    line-height: 1.74;
}

.info-block,
.usage-item,
.seo-column,
.formula-card,
.faq-item,
.how-to-steps li,
.what-is-visual-panel,
.solve-table-wrap,
.solve-visual-card,
.example-card,
.comparison-section,
.topic-cloud,
.function-card,
.learning-path-card,
.mistake-card,
.glossary-grid div {
    border: 1px solid var(--home-line);
    border-radius: 8px;
    background: linear-gradient(145deg, rgba(247, 250, 255, 0.93), rgba(232, 241, 253, 0.92));
    box-shadow: 0 18px 46px rgba(38, 65, 105, 0.09);
}

.what-is-visual-panel {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
    gap: 18px;
    align-items: center;
    padding: 24px;
    overflow: hidden;
}

.math-illustration {
    display: block;
    width: 100%;
    height: auto;
    min-height: 220px;
}

.math-illustration.compact {
    min-height: 0;
}

.svg-window,
.svg-card,
.svg-node {
    fill: rgba(242, 247, 255, 0.95);
    stroke: rgba(47, 111, 189, 0.22);
    stroke-width: 2;
}

.svg-card-soft,
.svg-node {
    fill: rgba(216, 228, 242, 0.88);
}

.svg-bar {
    fill: rgba(47, 111, 189, 0.12);
}

.svg-dot-red {
    fill: #ff8a80;
}

.svg-dot-yellow {
    fill: #ffd166;
}

.svg-dot-green {
    fill: #6ed0c4;
}

.svg-grid-line,
.svg-spoke {
    fill: none;
    stroke: rgba(47, 111, 189, 0.22);
    stroke-width: 2;
}

.svg-curve {
    fill: none;
    stroke: var(--home-accent);
    stroke-width: 6;
    stroke-linecap: round;
}

.svg-small,
.svg-big,
.svg-node-text {
    fill: var(--home-accent-strong);
    font-family: Aptos, "Segoe UI", system-ui, sans-serif;
    font-weight: 800;
}

.svg-small {
    font-size: 18px;
}

.svg-big {
    font-size: 26px;
}

.svg-node-main {
    fill: var(--home-ink);
}

.svg-node-text {
    font-size: 22px;
    text-anchor: middle;
}

.svg-node-text.main {
    fill: var(--home-surface-solid);
    font-size: 24px;
}

.quick-facts {
    display: grid;
    gap: 10px;
}

.quick-facts div {
    padding: 14px;
    border: 1px solid rgba(47, 111, 189, 0.15);
    border-radius: 8px;
    background: rgba(47, 111, 189, 0.07);
}

.quick-facts strong,
.quick-facts span {
    display: block;
}

.quick-facts strong {
    color: var(--home-ink);
    font-size: 0.94rem;
}

.quick-facts span {
    margin-top: 4px;
    color: var(--home-muted);
    font-size: 0.84rem;
    line-height: 1.42;
}

.info-block {
    position: relative;
    overflow: hidden;
    padding: 22px;
}

.info-block::after,
.formula-card::after {
    content: "";
    position: absolute;
    right: -36px;
    bottom: -48px;
    width: 128px;
    height: 128px;
    border: 1px solid rgba(47, 111, 189, 0.12);
    border-radius: 50%;
    background:
        linear-gradient(135deg, rgba(47, 111, 189, 0.1), rgba(255, 255, 255, 0));
    pointer-events: none;
}

.info-visual {
    display: inline-grid;
    min-height: 44px;
    width: fit-content;
    min-width: 74px;
    place-items: center;
    margin-bottom: 18px;
    padding: 0 12px;
    border: 1px solid rgba(47, 111, 189, 0.2);
    border-radius: 8px;
    background: rgba(47, 111, 189, 0.09);
    color: var(--home-accent-strong);
    font-size: 0.88rem;
    font-weight: 900;
    line-height: 1;
}

.info-title {
    display: block;
    margin: 8px 0 12px;
    padding: 0;
    border: 0;
    color: var(--home-ink);
    font-size: 1.12rem;
    line-height: 1.28;
    text-wrap: balance;
}

.info-text {
    color: var(--home-muted);
    font-size: 0.92rem;
    line-height: 1.72;
}

.feature-list {
    gap: 8px;
}

.feature-item {
    border: 1px solid rgba(47, 111, 189, 0.22);
    border-radius: 8px;
    background: rgba(47, 111, 189, 0.09);
    color: var(--home-accent-strong);
}

.audience-list {
    gap: 10px;
}

.audience-item {
    align-items: flex-start;
    color: var(--home-muted);
    line-height: 1.42;
}

.audience-icon {
    min-width: 32px;
    height: 24px;
    display: inline-grid;
    place-items: center;
    border-radius: 8px;
    background: var(--home-soft);
    color: var(--home-accent-strong);
    font-size: 0.72rem;
    font-weight: 800;
}

.usage-guide-title {
    margin: 0;
    color: var(--home-ink);
    text-align: left;
    font-size: 2.15rem;
    letter-spacing: 0;
    text-wrap: balance;
}

.how-to-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
    gap: 18px;
    align-items: stretch;
}

.how-to-steps {
    display: grid;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.how-to-steps li {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
    padding: 20px;
}

.step-number {
    display: inline-grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border-radius: 8px;
    background: var(--home-ink);
    color: var(--home-surface-solid);
    font-size: 0.78rem;
    font-weight: 900;
}

.how-to-steps h3,
.faq-item h3 {
    margin: 0;
    color: var(--home-ink);
    font-size: 1rem;
    line-height: 1.32;
}

.how-to-steps p,
.faq-item p,
.formula-card p {
    margin: 8px 0 0;
    color: var(--home-muted);
    font-size: 0.92rem;
    line-height: 1.64;
}

.formula-gallery {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.formula-card {
    position: relative;
    overflow: hidden;
    min-height: 166px;
    padding: 20px;
}

.formula-label {
    display: block;
    margin-bottom: 18px;
    color: var(--home-accent-strong);
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

.formula-card strong {
    display: block;
    color: var(--home-ink);
    font-size: 1.5rem;
    line-height: 1.12;
}

.solve-map-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
    gap: 16px;
    align-items: stretch;
}

.solve-table-wrap {
    overflow: hidden;
}

.solve-table {
    width: 100%;
    border-collapse: collapse;
    color: var(--home-muted);
    font-size: 0.92rem;
}

.solve-table th,
.solve-table td {
    padding: 16px;
    border-bottom: 1px solid var(--home-line);
    text-align: left;
    vertical-align: top;
}

.solve-table th {
    color: var(--home-ink);
    font-size: 0.78rem;
    font-weight: 900;
    text-transform: uppercase;
}

.solve-table tr:last-child td {
    border-bottom: 0;
}

.solve-table a,
.example-card a,
.topic-cloud a {
    color: var(--home-accent-strong);
    font-weight: 800;
    text-decoration: none;
}

.solve-table a:hover,
.solve-table a:focus-visible,
.example-card a:hover,
.example-card a:focus-visible,
.topic-cloud a:hover,
.topic-cloud a:focus-visible {
    text-decoration: underline;
}

.solve-visual-card {
    display: grid;
    gap: 16px;
    align-content: center;
    padding: 22px;
}

.solve-visual-card p {
    margin: 0;
    color: var(--home-muted);
    font-size: 0.92rem;
    line-height: 1.68;
}

.example-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.example-card {
    display: grid;
    align-content: start;
    gap: 12px;
    min-height: 360px;
    padding: 22px;
}

.example-card h3 {
    margin: 0;
    color: var(--home-ink);
    font-size: 1.05rem;
    line-height: 1.3;
}

.example-card p,
.example-card li {
    color: var(--home-muted);
    font-size: 0.9rem;
    line-height: 1.58;
}

.example-card p,
.example-card ol {
    margin: 0;
}

.example-card ol {
    display: grid;
    gap: 6px;
    padding-left: 20px;
}

.example-visual {
    position: relative;
    display: grid;
    height: 112px;
    place-items: center;
    overflow: hidden;
    border: 1px solid rgba(47, 111, 189, 0.18);
    border-radius: 8px;
    background:
        linear-gradient(135deg, rgba(47, 111, 189, 0.12), rgba(255, 255, 255, 0.35));
    color: var(--home-accent-strong);
    font-weight: 900;
}

.percent-ring::before {
    content: "";
    position: absolute;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: conic-gradient(var(--home-accent) 0 54deg, rgba(47, 111, 189, 0.15) 54deg 360deg);
}

.percent-ring span {
    position: relative;
    display: grid;
    width: 48px;
    height: 48px;
    place-items: center;
    border-radius: 50%;
    background: var(--home-surface-solid);
}

.fraction-bars {
    align-content: center;
    gap: 8px;
}

.fraction-bars span {
    display: block;
    width: 74%;
    height: 14px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--home-accent) 0 62%, rgba(47, 111, 189, 0.16) 62% 100%);
}

.fraction-bars span:nth-child(2) {
    width: 58%;
}

.fraction-bars span:nth-child(3) {
    width: 82%;
}

.equation-balance {
    grid-template-columns: 1fr auto 1fr;
    gap: 10px;
    padding: 16px;
}

.equation-balance span {
    display: grid;
    min-height: 46px;
    place-items: center;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.42);
}

.angle-sketch::before {
    content: "";
    position: absolute;
    bottom: 22px;
    left: 34px;
    width: 96px;
    height: 2px;
    background: var(--home-accent);
    transform-origin: left center;
}

.angle-sketch::after {
    content: "";
    position: absolute;
    bottom: 22px;
    left: 34px;
    width: 96px;
    height: 2px;
    background: var(--home-accent);
    transform: rotate(-42deg);
    transform-origin: left center;
}

.angle-sketch span {
    margin-left: 70px;
    margin-top: 18px;
}

.power-grid {
    grid-template-columns: repeat(2, 34px);
    gap: 8px;
}

.power-grid span {
    display: block;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--home-accent);
    box-shadow: 42px 0 0 rgba(47, 111, 189, 0.18);
}

.money-stack {
    align-content: center;
    gap: 8px;
}

.money-stack span {
    display: grid;
    width: 118px;
    height: 28px;
    place-items: center;
    border-radius: 999px;
    background: rgba(39, 117, 111, 0.16);
    color: var(--home-success);
}

.money-stack span:nth-child(2) {
    transform: translateX(12px);
}

.money-stack span:nth-child(3) {
    transform: translateX(24px);
}

.comparison-section {
    display: grid;
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    gap: 22px;
    align-items: start;
    padding: 26px;
}

.comparison-copy .section-lead {
    margin-top: 10px;
}

.comparison-grid {
    display: grid;
    overflow: hidden;
    border: 1px solid var(--home-line);
    border-radius: 8px;
}

.comparison-row {
    display: grid;
    grid-template-columns: 0.85fr 1fr 1fr;
}

.comparison-row span {
    min-width: 0;
    padding: 14px;
    border-right: 1px solid var(--home-line);
    border-bottom: 1px solid var(--home-line);
    color: var(--home-muted);
    font-size: 0.88rem;
    line-height: 1.42;
}

.comparison-row span:last-child {
    border-right: 0;
}

.comparison-row:last-child span {
    border-bottom: 0;
}

.comparison-head span {
    background: rgba(47, 111, 189, 0.09);
    color: var(--home-ink);
    font-size: 0.78rem;
    font-weight: 900;
    text-transform: uppercase;
}

.topic-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 22px;
}

.topic-cloud a {
    display: inline-flex;
    min-height: 38px;
    align-items: center;
    padding: 0 13px;
    border: 1px solid rgba(47, 111, 189, 0.18);
    border-radius: 8px;
    background: rgba(47, 111, 189, 0.07);
    font-size: 0.9rem;
}

.function-grid,
.learning-path-grid,
.mistake-grid,
.glossary-grid {
    display: grid;
    gap: 14px;
}

.function-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.learning-path-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.mistake-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.glossary-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.function-card,
.learning-path-card,
.mistake-card,
.glossary-grid div {
    display: grid;
    align-content: start;
    gap: 10px;
    min-width: 0;
    padding: 20px;
}

.function-card h3,
.learning-path-card h3,
.mistake-card h3 {
    margin: 0;
    color: var(--home-ink);
    font-size: 1rem;
    line-height: 1.28;
}

.function-card p,
.learning-path-card p,
.mistake-card p,
.glossary-grid span {
    margin: 0;
    color: var(--home-muted);
    font-size: 0.88rem;
    line-height: 1.58;
}

.function-card a,
.path-links a {
    color: var(--home-accent-strong);
    font-size: 0.86rem;
    font-weight: 800;
    text-decoration: none;
}

.function-card a:hover,
.function-card a:focus-visible,
.path-links a:hover,
.path-links a:focus-visible {
    text-decoration: underline;
}

.function-visual,
.path-visual {
    position: relative;
    display: grid;
    min-height: 108px;
    align-items: center;
    justify-items: center;
    overflow: hidden;
    border: 1px solid rgba(47, 111, 189, 0.18);
    border-radius: 8px;
    background:
        linear-gradient(135deg, rgba(47, 111, 189, 0.11), rgba(255, 255, 255, 0.38));
    color: var(--home-accent-strong);
    font-weight: 900;
}

.function-visual::before,
.path-visual::before {
    content: "";
    position: absolute;
    inset: 12px;
    border-radius: 8px;
    background-image:
        linear-gradient(rgba(47, 111, 189, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(47, 111, 189, 0.1) 1px, transparent 1px);
    background-size: 22px 22px;
    opacity: 0.65;
}

.function-visual span,
.path-visual span {
    position: relative;
}

.arithmetic-visual {
    grid-template-columns: repeat(4, 34px);
    gap: 7px;
}

.arithmetic-visual span,
.parentheses-visual span,
.wave-visual span,
.path-visual span {
    display: grid;
    min-width: 34px;
    height: 34px;
    place-items: center;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.52);
}

.parentheses-visual {
    grid-template-columns: auto 1fr auto;
    gap: 8px;
    padding: 0 12px;
}

.percent-visual span {
    display: grid;
    width: 78px;
    height: 78px;
    place-items: center;
    border-radius: 50%;
    background: conic-gradient(var(--home-accent) 0 90deg, rgba(47, 111, 189, 0.14) 90deg 360deg);
    color: var(--home-surface-solid);
}

.wave-visual {
    grid-template-columns: repeat(3, auto);
    gap: 7px;
}

.wave-visual::after,
.log-visual::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 18px;
    height: 34px;
    border: solid var(--home-accent);
    border-width: 0 0 3px 0;
    border-radius: 50%;
}

.inverse-visual span,
.log-visual span,
.exponent-visual span,
.root-visual span,
.factorial-visual span,
.constants-visual span {
    display: grid;
    min-width: 70px;
    min-height: 42px;
    place-items: center;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.52);
}

.log-visual,
.constants-visual {
    grid-template-columns: repeat(2, auto);
    gap: 8px;
}

.exponent-visual span {
    transform: translateY(-8px);
    box-shadow: 18px 18px 0 rgba(47, 111, 189, 0.16);
}

.root-visual span {
    width: 82px;
    clip-path: polygon(0 54%, 22% 54%, 36% 76%, 54% 24%, 100% 24%, 100% 40%, 64% 40%, 42% 92%, 18% 66%, 0 66%);
    background: var(--home-accent);
    color: transparent;
}

.factorial-visual span {
    font-size: 1.6rem;
}

.path-visual {
    grid-template-columns: repeat(3, auto);
    gap: 10px;
}

.path-algebra span:nth-child(1),
.path-science span:nth-child(2),
.path-money span:nth-child(3) {
    background: var(--home-ink);
    color: var(--home-surface-solid);
}

.path-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 4px;
}

.path-links a {
    display: inline-flex;
    min-height: 32px;
    align-items: center;
    padding: 0 10px;
    border: 1px solid rgba(47, 111, 189, 0.18);
    border-radius: 8px;
    background: rgba(47, 111, 189, 0.07);
}

.mistake-card {
    position: relative;
    overflow: hidden;
}

.mistake-card::after {
    content: "";
    position: absolute;
    right: -22px;
    top: -22px;
    width: 84px;
    height: 84px;
    border-radius: 50%;
    background: rgba(47, 111, 189, 0.08);
}

.mistake-badge {
    display: inline-grid;
    width: fit-content;
    min-height: 32px;
    place-items: center;
    padding: 0 10px;
    border-radius: 8px;
    background: var(--home-ink);
    color: var(--home-surface-solid);
    font-size: 0.74rem;
    font-weight: 900;
}

.glossary-grid strong {
    display: block;
    color: var(--home-ink);
    font-size: 0.96rem;
}

.usage-guide-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.usage-item {
    min-height: 112px;
    align-items: flex-start;
    padding: 18px;
    color: var(--home-ink);
}

.usage-item:hover,
.usage-item:focus-visible {
    border-color: rgba(47, 111, 189, 0.48);
    box-shadow: 0 22px 52px rgba(38, 65, 105, 0.15);
    transform: translateY(-3px);
}

.usage-icon {
    min-width: 46px;
    height: 46px;
    border: 1px solid rgba(47, 111, 189, 0.2);
    border-radius: 8px;
    background: rgba(47, 111, 189, 0.09);
    color: var(--home-accent-strong);
    font-size: 0.86rem;
    font-weight: 800;
}

.usage-name {
    color: var(--home-ink);
    line-height: 1.25;
}

.usage-desc {
    margin-top: 4px;
    color: var(--home-muted);
    white-space: normal;
    line-height: 1.45;
}

.usage-arrow {
    color: var(--home-accent-strong);
}

.seo-columns-wrapper {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.calculator-hub-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.seo-column {
    padding: 24px;
}

.seo-column-title {
    border-bottom-color: var(--home-accent);
    color: var(--home-ink);
    font-size: 1.18rem;
    letter-spacing: 0;
}

.seo-article-list {
    display: grid;
    gap: 10px;
    margin-top: 16px;
}

.seo-article-list a {
    color: var(--home-muted);
    text-decoration: none;
    transition: color var(--home-motion), transform var(--home-motion);
}

.seo-article-list a:hover,
.seo-article-list a:focus-visible {
    color: var(--home-accent-strong);
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.faq-item {
    display: grid;
    grid-template-columns: minmax(220px, 0.34fr) minmax(0, 1fr);
    gap: 22px;
    align-items: start;
    padding: 18px 22px;
}

[data-theme="dark"] .info-block,
[data-theme="dark"] .usage-item,
[data-theme="dark"] .seo-column,
[data-theme="dark"] .formula-card,
[data-theme="dark"] .faq-item,
[data-theme="dark"] .how-to-steps li,
[data-theme="dark"] .what-is-visual-panel,
[data-theme="dark"] .solve-table-wrap,
[data-theme="dark"] .solve-visual-card,
[data-theme="dark"] .example-card,
[data-theme="dark"] .comparison-section,
[data-theme="dark"] .topic-cloud,
[data-theme="dark"] .function-card,
[data-theme="dark"] .learning-path-card,
[data-theme="dark"] .mistake-card,
[data-theme="dark"] .glossary-grid div {
    background: linear-gradient(145deg, rgba(19, 31, 51, 0.94), rgba(13, 24, 42, 0.92));
}

[data-theme="dark"] .svg-window,
[data-theme="dark"] .svg-card,
[data-theme="dark"] .svg-node {
    fill: rgba(19, 31, 51, 0.92);
}

[data-theme="dark"] .svg-card-soft,
[data-theme="dark"] .svg-node {
    fill: rgba(29, 45, 71, 0.9);
}

.site-footer {
    border-top: 1px solid var(--home-line);
    background: rgba(242, 247, 255, 0.54);
}

[data-theme="dark"] .site-footer {
    background: rgba(9, 17, 31, 0.7);
}

.footer-content {
    max-width: 1180px;
}

.footer-brand .brand-solver {
    color: var(--home-accent);
    background: none;
    -webkit-text-fill-color: currentColor;
}

@media (max-width: 1180px) {
    .ask-calcsolver-layout {
        grid-template-columns: 1fr;
        max-width: 720px;
        height: auto;
        min-height: 0;
        justify-self: center;
    }

    .ask-workspace,
    .ask-side-panel {
        border-top: 1px solid var(--home-line);
        border-left: 0;
    }

    .ask-calcsolver-panel {
        position: static;
    }

    .ask-workspace.home-calculator-stage {
        width: 100%;
        max-width: none;
        justify-self: stretch;
    }

    .ask-calcsolver-panel,
    .ask-workspace,
    .ask-side-panel {
        height: auto;
    }

    .ask-side-panel .workspace-panel {
        max-height: min(560px, 70vh);
    }
}

@media (max-width: 1024px) {
    .nav-menu {
        top: 82px;
        left: 16px;
        right: 16px;
        bottom: auto;
        width: calc(100% - 32px);
        max-height: calc(100dvh - 104px);
        border: 1px solid var(--home-line);
        border-radius: 8px;
        background: var(--home-surface-solid);
        box-shadow: 0 30px 72px var(--home-shadow);
        transform: translateX(calc(-100% - 48px));
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .home-hero-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .hero-title {
        max-width: 18ch;
        font-size: 3rem;
    }

    .home-calculator-stage {
        max-width: 560px;
        justify-self: center;
    }

    .calculator-info-section,
    .usage-guide-list,
    .calculator-hub-grid,
    .example-grid,
    .function-grid,
    .learning-path-grid,
    .mistake-grid,
    .glossary-grid {
        grid-template-columns: 1fr 1fr;
    }

    .how-to-layout,
    .what-is-visual-panel,
    .solve-map-layout,
    .comparison-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 767px) {
    .navbar {
        top: 8px;
        width: calc(100% - 20px);
    }

    .home-page {
        padding: 26px 14px 52px;
    }

    .home-hero-section {
        width: calc(100% + 28px);
        margin-left: -14px;
        margin-right: -14px;
    }

    .home-hero-section {
        min-height: 0;
        padding: 26px 0 34px;
    }

    .home-hero-copy {
        gap: 13px;
    }

    .hero-title {
        max-width: 13ch;
        font-size: 2.25rem;
        line-height: 1.04;
    }

    .hero-description {
        font-size: 1rem;
    }

    .calculator-info-section,
    .usage-guide-list,
    .seo-columns-wrapper,
    .faq-grid,
    .formula-gallery,
    .example-grid,
    .function-grid,
    .learning-path-grid,
    .mistake-grid,
    .glossary-grid {
        grid-template-columns: 1fr;
    }

    .home-proof-grid {
        display: none;
    }

    .ask-calcsolver-layout {
        gap: 16px;
    }

    .ask-calcsolver-panel,
    .ask-workspace,
    .ask-side-panel {
        border-radius: 10px;
    }

    .ask-calcsolver-panel,
    .workspace-panel {
        padding: 14px;
    }

    .ask-workspace-header {
        flex-direction: column;
        align-items: stretch;
        padding: 14px 14px 10px;
    }

    .ask-open-page {
        align-self: flex-start;
    }

    .workspace-tabs {
        overflow-x: auto;
        padding: 0 14px 12px;
    }

    .workspace-tab {
        flex: 0 0 auto;
    }

    .ask-form {
        grid-template-columns: 1fr;
    }

    .ask-form button {
        width: 100%;
    }

    .ask-conversation {
        min-height: 150px;
        max-height: 240px;
    }

    .ask-calculator-form,
    .ask-breakdown {
        grid-template-columns: 1fr;
    }

    .ask-result-number {
        font-size: 1.72rem;
    }

    .ask-scientific-calculator .calculator-shell-frame {
        max-width: 100%;
    }

    .calculator-stage-header {
        flex-direction: column;
        gap: 4px;
    }

    .calculator-shell-frame {
        padding: 6px;
    }

    .calculator-container {
        max-width: 100%;
        flex-direction: column;
        max-height: none;
        padding-bottom: 0;
    }

    .display-area {
        min-height: 130px;
        padding: 54px 16px 18px;
    }

    .code-mode-btn {
        min-width: 120px;
        height: 34px;
        font-size: 0.82rem;
    }

    .mode-toggle {
        flex-wrap: wrap;
    }

    .angle-toggle {
        width: 100%;
    }

    .angle-btn {
        flex: 1;
    }

    .btn {
        height: 52px;
    }

    .scientific-grid .btn {
        height: 42px;
        font-size: 0.78rem;
    }

    .calculator-info-section,
    .usage-guide-section,
    .seo-articles-section,
    .faq-section {
        margin-top: 46px;
    }

    .usage-guide-title,
    .section-title {
        font-size: 1.8rem;
    }

    .how-to-steps li {
        grid-template-columns: 44px minmax(0, 1fr);
        gap: 12px;
        padding: 18px;
    }

    .step-number {
        width: 38px;
        height: 38px;
    }

    .what-is-visual-panel,
    .comparison-section,
    .solve-visual-card {
        padding: 18px;
    }

    .math-illustration {
        min-height: 170px;
    }

    .solve-table {
        min-width: 620px;
    }

    .solve-table-wrap {
        overflow-x: auto;
    }

    .example-card {
        min-height: 0;
    }

    .comparison-row {
        grid-template-columns: 1fr;
    }

    .comparison-row span {
        border-right: 0;
    }

    .topic-cloud a {
        width: 100%;
    }

    .faq-item {
        grid-template-columns: 1fr;
        gap: 8px;
    }
}

@media (max-width: 380px) {
    .hero-title {
        font-size: 2.2rem;
    }

    .home-primary-link,
    .home-secondary-link {
        width: 100%;
        justify-content: center;
    }

    .result-display {
        font-size: 1.9rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .home-primary-link,
    .home-secondary-link,
    .usage-item,
    .example-card,
    .topic-cloud a,
    .btn,
    .mode-btn,
    .angle-btn,
    .icon-btn {
        transition: none;
    }
}

/* September paper-workbench homepage pass */
:root {
    --home-bg: #f3ead8;
    --home-paper: #fffaf0;
    --home-paper-strong: #fff4d6;
    --home-surface: rgba(255, 250, 240, 0.94);
    --home-surface-solid: #fffaf0;
    --home-ink: #22201c;
    --home-muted: #6e6255;
    --home-soft: #f5dfaf;
    --home-line: rgba(46, 38, 28, 0.2);
    --home-accent: #d97706;
    --home-accent-strong: #92400e;
    --home-success: #15803d;
    --home-rose: #e8b4b8;
    --home-mint: #bfe6d2;
    --home-blue: #bfd7f1;
    --home-shadow: rgba(82, 55, 24, 0.18);
    --home-sketch-font: "Comic Sans MS", "Comic Relief", "Bradley Hand ITC", cursive;
    --home-motion: 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

[data-theme="dark"] {
    --home-bg: #15130f;
    --home-paper: #242018;
    --home-paper-strong: #33291a;
    --home-surface: rgba(36, 32, 24, 0.94);
    --home-surface-solid: #242018;
    --home-ink: #fff7e7;
    --home-muted: #d7c7ac;
    --home-soft: #47371f;
    --home-line: rgba(255, 239, 207, 0.2);
    --home-accent: #fbbf24;
    --home-accent-strong: #fcd34d;
    --home-success: #86efac;
    --home-rose: #6b2c37;
    --home-mint: #1f5a43;
    --home-blue: #264968;
    --home-shadow: rgba(0, 0, 0, 0.42);
}

body {
    background:
        linear-gradient(rgba(255, 250, 240, 0.72) 0 0),
        repeating-linear-gradient(0deg, transparent 0 31px, rgba(54, 43, 30, 0.08) 32px),
        repeating-linear-gradient(90deg, transparent 0 31px, rgba(54, 43, 30, 0.045) 32px),
        var(--home-bg);
    color: var(--home-ink);
    font-family: "Trebuchet MS", Aptos, "Segoe UI", system-ui, sans-serif;
}

[data-theme="dark"] body {
    background:
        linear-gradient(rgba(21, 19, 15, 0.86) 0 0),
        repeating-linear-gradient(0deg, transparent 0 31px, rgba(255, 239, 207, 0.055) 32px),
        repeating-linear-gradient(90deg, transparent 0 31px, rgba(255, 239, 207, 0.035) 32px),
        var(--home-bg);
}

body::before {
    opacity: 0.32;
    background-image:
        linear-gradient(115deg, rgba(146, 64, 14, 0.12) 0 1px, transparent 1px 100%),
        linear-gradient(0deg, rgba(255, 255, 255, 0.38), rgba(255, 255, 255, 0));
    background-size: 160px 160px, 100% 100%;
}

.navbar {
    border: 2px solid var(--home-ink);
    border-radius: 6px;
    background: rgba(255, 250, 240, 0.9);
    box-shadow: 5px 5px 0 rgba(34, 32, 28, 0.13);
}

[data-theme="dark"] .navbar {
    background: rgba(36, 32, 24, 0.9);
}

.navbar-brand,
.hero-title,
.ask-calcsolver-header h2,
.ask-workspace-header h2,
.section-title,
.usage-guide-title {
    font-family: var(--home-sketch-font);
}

.navbar-brand .brand-solver {
    color: var(--home-accent-strong);
}

.nav-item > a:hover,
.dropdown-menu a:hover {
    background: rgba(245, 223, 175, 0.5);
}

.home-page {
    padding-top: 54px;
}

.home-hero-section {
    width: min(1228px, 100%);
    margin-left: auto;
    margin-right: auto;
    padding: 28px 0 54px;
}

.home-hero-grid {
    gap: 28px;
}

.home-hero-copy {
    position: relative;
    max-width: 980px;
    padding: 18px 18px 4px;
}

.home-hero-copy::before,
.home-hero-copy::after {
    position: absolute;
    color: var(--home-accent-strong);
    font-family: var(--home-sketch-font);
    font-weight: 700;
    opacity: 0.7;
    transform: rotate(-7deg);
    pointer-events: none;
}

.home-hero-copy::before {
    content: "show your work";
    left: 2%;
    top: 0;
}

.home-hero-copy::after {
    content: "no mystery math";
    right: 5%;
    bottom: 0;
    transform: rotate(5deg);
}

.hero-title {
    max-width: 15ch;
    font-size: clamp(2.7rem, 7vw, 6.35rem);
    line-height: 0.98;
}

.hero-description {
    max-width: 720px;
    font-size: 1.06rem;
}

.hero-doodle-strip {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    width: min(900px, 100%);
    margin-top: 4px;
}

.hero-doodle-strip a {
    display: grid;
    gap: 4px;
    min-height: 72px;
    align-content: center;
    border: 2px solid var(--home-ink);
    border-radius: 6px;
    padding: 10px 12px;
    color: var(--home-ink);
    text-decoration: none;
    background: var(--home-paper);
    box-shadow: 4px 4px 0 rgba(34, 32, 28, 0.13);
    transform: rotate(-1deg);
    transition: transform var(--home-motion), box-shadow var(--home-motion), background var(--home-motion);
}

.hero-doodle-strip a:nth-child(2) {
    background: var(--home-mint);
    transform: rotate(1.3deg);
}

.hero-doodle-strip a:nth-child(3) {
    background: var(--home-rose);
    transform: rotate(-0.8deg);
}

.hero-doodle-strip a:nth-child(4) {
    background: var(--home-blue);
    transform: rotate(1deg);
}

.hero-doodle-strip a:hover,
.hero-doodle-strip a:focus-visible {
    box-shadow: 2px 2px 0 rgba(34, 32, 28, 0.22);
    transform: translateY(2px) rotate(0deg);
}

.hero-doodle-strip strong {
    font-variant-numeric: tabular-nums;
}

.hero-doodle-strip span {
    color: var(--home-muted);
    font-size: 0.8rem;
    font-weight: 800;
}

.ask-calcsolver-layout {
    position: relative;
    grid-template-columns: minmax(280px, 0.84fr) minmax(560px, 680px) minmax(280px, 0.84fr);
    gap: 0;
    width: min(1280px, calc(100vw - 32px));
    min-height: 690px;
    border: 3px solid var(--home-ink);
    border-radius: 16px;
    background:
        linear-gradient(90deg, rgba(245, 223, 175, 0.34), transparent 28%, transparent 72%, rgba(191, 215, 241, 0.24)),
        var(--home-surface);
    box-shadow: 10px 10px 0 rgba(34, 32, 28, 0.12), 0 28px 70px var(--home-shadow);
    overflow: hidden;
}

.ask-workspace.home-calculator-stage {
    width: 100%;
    max-width: none;
    justify-self: stretch;
}

.ask-calcsolver-layout::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        repeating-linear-gradient(0deg, transparent 0 27px, rgba(46, 38, 28, 0.045) 28px),
        linear-gradient(90deg, rgba(217, 119, 6, 0.12), transparent 18%);
    opacity: 0.76;
}

.ask-calcsolver-panel,
.ask-workspace,
.ask-side-panel {
    position: relative;
    z-index: 1;
}

.ask-calcsolver-panel {
    grid-template-rows: auto auto minmax(260px, 1fr) auto auto auto;
    gap: 14px;
    padding: 18px 20px 16px;
}

.ask-side-panel {
    grid-template-rows: auto auto auto minmax(0, 1fr);
}

.ask-side-panel .workspace-tabs {
    align-items: center;
    justify-content: flex-start;
}

.ask-side-panel .workspace-tab {
    flex: 0 0 auto;
    min-height: 40px;
    height: 40px;
    padding: 0 16px;
}

.ask-workspace,
.ask-side-panel {
    border-left: 2px dashed rgba(46, 38, 28, 0.25);
}

.ask-calcsolver-kicker,
.section-kicker,
.ask-calculator-card-header span,
.ask-result-label,
.ask-formula-card span {
    color: var(--home-accent-strong);
    font-family: var(--home-sketch-font);
    text-transform: none;
}

.ask-calcsolver-header h2,
.ask-workspace-header h2 {
    font-size: 1.35rem;
}

.ask-panel-note {
    display: grid;
    gap: 7px;
    padding: 12px;
    border: 2px solid var(--home-ink);
    border-radius: 6px;
    background: var(--home-paper-strong);
    box-shadow: 4px 4px 0 rgba(34, 32, 28, 0.1);
    transform: rotate(-0.7deg);
}

.ask-panel-note span {
    color: var(--home-ink);
    font-size: 0.82rem;
    font-weight: 800;
}

.ask-message {
    border: 2px solid var(--home-ink);
    border-radius: 14px 14px 14px 4px;
    background: rgba(255, 250, 240, 0.88);
    box-shadow: 3px 3px 0 rgba(34, 32, 28, 0.09);
    animation: ask-pop 180ms ease-out both;
}

.ask-message-user {
    border-radius: 14px 14px 4px 14px;
    background: var(--home-blue);
}

.ask-message-system {
    background: var(--home-paper);
}

.ask-form textarea,
.ask-field input {
    border: 2px solid var(--home-ink);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: inset 0 2px 0 rgba(34, 32, 28, 0.06);
}

.ask-form textarea:focus,
.ask-field input:focus {
    border-color: var(--home-accent-strong);
    box-shadow: 0 0 0 4px rgba(217, 119, 6, 0.18);
}

.ask-form button,
.ask-clear-btn,
.ask-suggestions button,
.workspace-tab,
.ask-open-page,
.ask-inline-link,
.ask-calculator-card-header a,
.ask-alternative-list button {
    border: 2px solid var(--home-ink);
    border-radius: 6px;
    box-shadow: 3px 3px 0 rgba(34, 32, 28, 0.12);
}

.ask-form button {
    background: var(--home-ink);
}

.ask-suggestions button:nth-of-type(1),
.workspace-tab.active {
    background: var(--home-soft);
}

.ask-suggestions button:nth-of-type(2),
.ask-result-card {
    background: var(--home-mint);
}

.ask-suggestions button:nth-of-type(3),
.ask-formula-card {
    background: var(--home-blue);
}

.ask-suggestions button:nth-of-type(4),
.ask-result-empty {
    background: var(--home-paper-strong);
}

.ask-suggestions button:nth-of-type(5) {
    background: var(--home-rose);
}

.ask-suggestions button:hover,
.ask-clear-btn:hover,
.workspace-tab:hover,
.ask-open-page:hover,
.ask-inline-link:hover,
.ask-alternative-list button:hover,
.ask-form button:hover,
.ask-suggestions button:focus-visible,
.ask-clear-btn:focus-visible,
.workspace-tab:focus-visible,
.ask-open-page:focus-visible,
.ask-inline-link:focus-visible,
.ask-alternative-list button:focus-visible,
.ask-form button:focus-visible {
    box-shadow: 1px 1px 0 rgba(34, 32, 28, 0.22);
    transform: translate(2px, 2px);
}

.ask-workspace-header {
    position: relative;
    align-items: start;
}

.workspace-doodle-note {
    position: absolute;
    left: 50%;
    top: 12px;
    border: 2px solid var(--home-ink);
    border-radius: 6px;
    padding: 5px 9px;
    background: var(--home-paper-strong);
    color: var(--home-accent-strong);
    font-family: var(--home-sketch-font);
    font-size: 0.78rem;
    font-weight: 700;
    transform: translateX(-50%) rotate(-4deg);
}

.side-easter-note {
    display: grid;
    gap: 4px;
    margin: 0 18px 12px;
    border: 2px dashed rgba(46, 38, 28, 0.35);
    border-radius: 6px;
    padding: 10px 12px;
    background: rgba(232, 180, 184, 0.34);
}

.side-easter-note strong {
    color: var(--home-ink);
    font-family: var(--home-sketch-font);
}

.side-easter-note span {
    color: var(--home-muted);
    font-size: 0.82rem;
    line-height: 1.4;
}

.calculator-shell-frame {
    border: 3px solid #25211b;
    border-radius: 18px;
    padding: 8px;
    background: #3b3a35;
    box-shadow: 7px 7px 0 rgba(34, 32, 28, 0.16), 0 24px 58px rgba(82, 55, 24, 0.25);
}

.calculator-container {
    border-radius: 12px;
    background: #ece6d8;
}

.display-area {
    border-radius: 10px 10px 0 0;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent),
        #202420;
}

.result-display {
    color: #98f2a8;
}

.mode-toggle {
    background: #d8ceb9;
}

.btn {
    border: 2px solid rgba(37, 33, 27, 0.72);
    border-radius: 7px;
    box-shadow: 0 4px 0 rgba(37, 33, 27, 0.22);
    font-weight: 800;
}

.btn:hover,
.btn:focus-visible {
    box-shadow: 0 2px 0 rgba(37, 33, 27, 0.28);
    transform: translateY(2px);
}

.btn-number {
    background: #fff8e8;
}

.btn-function {
    background: #7d8175;
}

.btn-operator,
.btn-constant,
.angle-btn.active {
    background: #d97706;
}

.btn-equals {
    background: #15803d;
}

.info-block,
.usage-item,
.seo-column,
.formula-card,
.faq-item,
.how-to-steps li,
.what-is-visual-panel,
.solve-table-wrap,
.solve-visual-card,
.example-card,
.comparison-section,
.topic-cloud,
.function-card,
.learning-path-card,
.mistake-card,
.glossary-grid div {
    border: 2px solid rgba(46, 38, 28, 0.78);
    border-radius: 7px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.42), rgba(255, 250, 240, 0.56)),
        var(--home-paper);
    box-shadow: 5px 5px 0 rgba(34, 32, 28, 0.1);
}

.usage-item:nth-child(3n + 1),
.function-card:nth-child(4n + 1),
.learning-path-card:nth-child(4n + 1),
.seo-column:nth-child(4n + 1) {
    background-color: var(--home-paper-strong);
}

.usage-item:nth-child(3n + 2),
.function-card:nth-child(4n + 2),
.learning-path-card:nth-child(4n + 2),
.seo-column:nth-child(4n + 2) {
    background-color: rgba(191, 230, 210, 0.48);
}

.usage-item:nth-child(3n),
.function-card:nth-child(4n + 3),
.learning-path-card:nth-child(4n + 3),
.seo-column:nth-child(4n + 3) {
    background-color: rgba(191, 215, 241, 0.5);
}

.example-card:nth-child(2n),
.mistake-card:nth-child(2n) {
    background-color: rgba(232, 180, 184, 0.3);
}

.function-visual,
.path-visual,
.example-visual {
    border: 2px dashed rgba(46, 38, 28, 0.34);
    background:
        repeating-linear-gradient(0deg, transparent 0 19px, rgba(46, 38, 28, 0.055) 20px),
        rgba(255, 250, 240, 0.7);
}

.home-generated-visual {
    display: block;
    width: 100%;
    height: auto;
    border: 2px dashed rgba(46, 38, 28, 0.22);
    border-radius: 8px;
    background: var(--home-paper);
}

.generated-card-visual {
    display: block;
    height: auto;
    min-height: 0;
    padding: 0;
    aspect-ratio: 5 / 2;
    background: var(--home-paper);
}

.function-visual.generated-card-visual {
    aspect-ratio: 16 / 9;
}

.generated-card-visual::before,
.generated-card-visual::after {
    content: none;
}

.generated-card-visual img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@keyframes ask-pop {
    from {
        opacity: 0;
        transform: translateY(6px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@media (max-width: 1180px) {
    .ask-calcsolver-layout {
        grid-template-columns: 1fr;
        width: min(760px, calc(100vw - 28px));
        border-radius: 14px;
    }

    .ask-workspace,
    .ask-side-panel {
        border-left: 0;
        border-top: 2px dashed rgba(46, 38, 28, 0.25);
    }
}

@media (max-width: 900px) {
    .hero-doodle-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .home-hero-copy::before,
    .home-hero-copy::after {
        display: none;
    }
}

@media (min-width: 1181px) and (max-height: 1050px) {
    .navbar {
        top: 6px;
    }

    .navbar-container {
        height: 54px;
    }

    .nav-item > a {
        height: 54px;
    }

    .home-page {
        padding-top: 18px;
    }

    .home-hero-section {
        padding: 6px 0 16px;
    }

    .home-hero-grid {
        gap: 10px;
    }

    .home-hero-copy {
        gap: 7px;
        padding: 6px 18px 0;
    }

    .home-hero-copy::before {
        top: 2px;
        left: 9%;
    }

    .home-hero-copy::after {
        display: none;
    }

    .hero-title {
        max-width: none;
        font-size: clamp(2.35rem, 3.6vw, 3.45rem);
        line-height: 0.94;
    }

    .hero-description {
        max-width: 700px;
        font-size: 0.88rem;
        line-height: 1.36;
    }

    .hero-doodle-strip {
        width: min(760px, 100%);
        gap: 8px;
    }

    .hero-doodle-strip a {
        min-height: 44px;
        padding: 5px 10px;
    }

    .hero-doodle-strip span {
        font-size: 0.72rem;
    }

    .ask-calcsolver-layout {
        min-height: 620px;
        height: min(690px, calc(100vh - 138px));
    }

    .ask-calcsolver-panel {
        grid-template-rows: auto auto minmax(238px, 1fr) auto auto auto;
        gap: 8px;
        padding: 16px;
    }

    .ask-calcsolver-header {
        gap: 2px;
    }

    .ask-calcsolver-header h2 {
        font-size: 1.18rem;
    }

    .ask-panel-note {
        gap: 4px;
        padding: 8px 10px;
    }

    .ask-panel-note span,
    .ask-message p,
    .ask-calcsolver-header p:not(.ask-calcsolver-kicker) {
        font-size: 0.78rem;
    }

    .ask-conversation {
        min-height: 150px;
        max-height: none;
    }

    .ask-form textarea {
        min-height: 56px;
        padding: 9px 10px;
    }

    .ask-suggestions {
        gap: 6px;
        max-height: 72px;
        overflow-y: auto;
        padding-right: 2px;
    }

    .ask-suggestions button,
    .ask-clear-btn {
        min-height: 28px;
        padding: 0 8px;
        font-size: 0.72rem;
    }

    .ask-workspace-header {
        padding: 12px 16px 9px;
    }

    .workspace-doodle-note {
        top: 8px;
    }

    .side-easter-note {
        margin: 0 16px 10px;
        padding: 8px 10px;
    }

    .workspace-tabs {
        padding: 0 16px 10px;
    }

    .ask-side-panel .workspace-tabs {
        align-items: center;
    }

    .ask-side-panel .workspace-tab {
        min-height: 34px;
        height: 34px;
        padding: 0 12px;
    }

    .workspace-panel {
        padding: 12px 16px 16px;
    }

    .ask-scientific-calculator .calculator-shell-frame {
        max-width: 410px;
    }

    .ask-scientific-calculator .calculator-container {
        grid-template-rows: minmax(96px, 0.28fr) auto minmax(0, 1fr);
    }

    .calculator-shell-frame {
        padding: 6px;
    }

    .display-area {
        min-height: 96px;
        padding: 38px 12px 10px;
    }

    .code-mode-btn {
        top: 10px;
        right: 12px;
        min-width: 132px;
        height: 32px;
        font-size: 0.82rem;
    }

    .result-display {
        font-size: 2.05rem;
    }

    .mode-toggle {
        gap: 6px;
        padding: 5px 10px;
    }

    .mode-btn {
        padding: 6px 10px;
        font-size: 0.82rem;
    }

    .button-panel {
        padding: 8px 10px 10px;
    }

    .button-grid {
        gap: 6px;
    }

    .btn {
        height: 42px;
        border-radius: 6px;
        font-size: 1rem;
    }

    .ask-scientific-calculator .btn {
        min-height: 42px;
    }

    .scientific-grid .btn {
        height: 34px;
        font-size: 0.72rem;
    }

    .ask-scientific-calculator .scientific-grid .btn {
        min-height: 34px;
    }

    .calculator-container {
        border-radius: 10px;
    }
}

@media (min-width: 1181px) and (max-height: 860px) {
    .ask-calcsolver-panel {
        grid-template-rows: auto auto minmax(150px, 1fr) auto auto auto;
        gap: 8px;
    }

    .ask-conversation {
        min-height: 150px;
    }

    .ask-suggestions {
        max-height: 64px;
    }

    .ask-scientific-calculator,
    .ask-scientific-calculator .calculator-shell-frame,
    .ask-scientific-calculator .calculator-container {
        height: auto;
    }

    .ask-scientific-calculator .button-panel,
    .ask-scientific-calculator .button-grid {
        height: auto;
    }

    .ask-scientific-calculator .button-grid {
        grid-template-rows: repeat(5, minmax(42px, auto));
    }

    .ask-scientific-calculator .scientific-grid {
        grid-template-rows: repeat(9, minmax(34px, auto));
    }

    .ask-scientific-calculator .btn {
        height: 42px;
    }

    .ask-scientific-calculator .scientific-grid .btn {
        height: 34px;
    }
}

@media (max-width: 767px) {
    .home-page {
        padding: 28px 12px 52px;
    }

    .home-hero-section {
        width: 100%;
        padding: 24px 0 34px;
    }

    .hero-title {
        max-width: 11ch;
        font-size: 2.85rem;
    }

    .hero-doodle-strip {
        grid-template-columns: 1fr;
    }

    .hero-doodle-strip a {
        min-height: 58px;
        transform: none;
    }

    .ask-calcsolver-layout {
        width: 100%;
        min-height: 0;
        box-shadow: 5px 5px 0 rgba(34, 32, 28, 0.12);
    }

    .ask-calcsolver-panel,
    .workspace-panel {
        padding: 14px;
    }

    .workspace-doodle-note {
        position: static;
        width: fit-content;
        transform: rotate(-2deg);
    }

    .side-easter-note {
        margin: 0 14px 12px;
    }

    .calculator-shell-frame {
        padding: 5px;
        border-width: 2px;
        box-shadow: 4px 4px 0 rgba(34, 32, 28, 0.14);
    }
}

@media (prefers-reduced-motion: reduce) {
    .ask-message {
        animation: none;
    }
}