* {
    box-sizing: border-box;
}

:root {
    /* Objects */
    --primary-900: hsl(207 72% 5%);
    --primary-850: hsl(202 66% 7%);
    --primary-800: hsl(202 62% 10%);
    --primary-700: hsl(196 65% 13%);
    --primary-600: hsl(195 77% 19%);
    --primary-500: hsl(196 71% 27%);
    --primary-400: hsl(197 66% 36%);
    --primary-300: hsl(197 55% 49%);
    --primary-200: hsl(197 68% 64%);
    --primary-100: hsl(197 70% 79%);

    /* Text */
    --text:       hsl(45 20% 95%);
    --text-muted: hsl(215 15% 72%);

    /* Accent */
    --accent-900: hsl(24 95% 7%);
    --accent-800: hsl(24 90% 13%);
    --accent-700: hsl(23 82% 23%);
    --accent-600: hsl(22 84% 34%);
    --accent-500: hsl(21 93% 45%);
    --accent-400: hsl(24 94% 52%);
    --accent-300: hsl(29 76% 60%);
    --accent-200: hsl(32 80% 77%);
    --accent-100: hsl(35 88% 90%);

    /* Greys */
    --grey-900: hsl(220 6% 5%);
    --grey-800: hsl(220 6% 9%);
    --grey-700: hsl(220 6% 14%);
    --grey-600: hsl(220 5% 22%);
    --grey-500: hsl(220 4% 35%);
    --grey-400: hsl(220 4% 50%);
    --grey-300: hsl(220 5% 65%);
    --grey-200: hsl(220 5% 80%);
    --grey-100: hsl(220 6% 94%);

    /* Shared / overlap */
    --overlap-700: hsl(42 70% 19%);
    --overlap-600: hsl(42 75% 29%);
    --overlap-500: hsl(43 85% 42%);
    --overlap-400: hsl(45 100% 58%);
    --overlap-300: hsl(47 100% 75%);

    --filter-all: hsl(216 48% 62%);
    --filter-all-selected: hsl(216 66% 76%);
    --issue-all: hsl(216 56% 68%);

    --font-body:
        Inter,
        "Segoe UI",
        Roboto,
        Helvetica,
        Arial,
        sans-serif,
        "Apple Color Emoji",
        "Segoe UI Emoji",
        "Segoe UI Symbol";

    --font-heading:
        "Red Hat Display",
        Inter,
        "Segoe UI",
        Roboto,
        Helvetica,
        Arial,
        sans-serif;

    --font-logo:
        "Barlow Semi Condensed",
        "Arial Narrow",
        "Roboto Condensed",
        sans-serif;

    --reading-measure: 70ch;
    
    /* Font Scale */
    --font-xs:   0.75rem;   /* 12px */
    --font-sm:   0.875rem;  /* 14px */
    --font-base: 1rem;      /* 16px */
    --font-md:   1.125rem;  /* 18px */
    --font-lg:   1.25rem;   /* 20px */
    --font-xl:   1.5rem;    /* 24px */
    --font-2xl:  1.875rem;  /* 30px */
    --font-3xl:  2.25rem;   /* 36px */
    --font-4xl:  2.75rem;    /* 44px */

    /* Font weights */
    --weight-normal: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold: 700;
    --weight-extrabold: 800;

    /* Spacing */
    --space-1: 0.25rem; /* 4px */
    --space-2: 0.5rem;  /* 8px */
    --space-3: 0.75rem; /* 12px */
    --space-4: 1rem;    /* 16px */
    --space-6: 1.5rem;  /* 24px */
    --space-8: 2rem;    /* 32px */
    --space-12: 3rem;   /* 48px */
    --space-16: 4rem;   /* 64px */
    --space-24: 6rem;   /* 96px */
    --space-32: 8rem;   /* 128px */
    
    /* Borders */
    --border-width: 1px;
    --border-width-med: 2px;
    --border-width-thick: 3px;
    --border-radius: 6px;
    --border-radius-curved: 14px;

    --border-color: hsl(197 30% 24%);
    --border-subtle: var(--grey-700);
    --border-secondary: color-mix(
        in srgb,
        var(--grey-700) 60%,
        var(--primary-800)
    );
    --border-default: var(--border-color);
    --border-divider: color-mix(
        in srgb,
        var(--primary-400) 35%,
        var(--border-subtle)
    );

    --action-highlight: hsl(35 88% 90% / 0.18);
    --action-shadow: hsl(24 95% 5% / 0.48);

    /* Shadows */
    --shadow-sm:
        0 0.2rem 0.5rem
        color-mix(in srgb, var(--primary-900) 35%, transparent);

    --shadow-md:
        0 0.5rem 1.25rem
        color-mix(in srgb, var(--primary-900) 45%, transparent);

    --shadow-lg:
        0 1.5rem 4rem
        color-mix(in srgb, var(--primary-900) 65%, transparent);

    --shadow-inset-highlight:
        inset 0 1px 0
        color-mix(in srgb, var(--text) 7%, transparent);

}

html {
    scrollbar-gutter: auto;
    color-scheme: dark;
}

[hidden] {
    display: none !important;
}

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 1rem;

    background: linear-gradient(
        135deg,
        var(--primary-850),
        var(--primary-900) 48%,
        var(--primary-850)
    );

    color: var(--text);
}

/* Override browser defaults */
h1, h2, h3, p {
    margin: 0;
}

h1 {
    font-family: var(--font-heading);
    font-size: clamp(var(--font-xl), 3vw, var(--font-4xl));
    font-weight: var(--weight-extrabold);
    letter-spacing: -0.04em;
    line-height: 1.1;
    text-transform: uppercase;
}

h2 {
    font-family: var(--font-heading);
    font-size: clamp(var(--font-lg), 2.25vw, var(--font-xl));
    font-weight: var(--weight-bold);
    letter-spacing: -0.02em;
    line-height: 1.05;
}

h3 {
    font-family: var(--font-heading);
    font-size: clamp(var(--font-base), 1.75vw, var(--font-lg));
    font-weight: var(--weight-bold);
}

p {
    font-size: var(--font-base);
    font-weight: var(--weight-normal);
    color: var(--text-muted);
}

:where(a, button, input):focus-visible {
    outline: var(--border-width-med) solid var(--primary-200);
    outline-offset: var(--space-1);
}


/* =========================
   Layout
   ========================= */

.app-shell {
    width: 100%;
    min-height: 100vh;
    min-height: 100dvh;

    display: flex;
    flex-direction: column;
}

/* =========================
   Header
   ========================= */
.site-header {
    background: linear-gradient(
        90deg,
        hsl(207 89% 3%),
        var(--primary-900) 55%,
        hsl(202 80% 5%)
    );
    border-bottom: var(--border-width) solid var(--border-color);
}

.header-monogram {
    position: static;
    flex: 0 0 auto;

    display: flex;
    flex-direction: column;
    align-items: center;

    color: inherit;
    font-family: var(--font-logo);
    text-decoration: none;
    font-weight: var(--weight-bold);
    user-select: none;
}

.monogram-d,
.monogram-c1 {
    color: var(--text);
}

.monogram-c2 {
    color: var(--accent-500);
}

.monogram-letters {
    display: flex;
    align-items: baseline;

    font-size: 3.50rem;
    letter-spacing: -0.04em;
    line-height: 1;
}

.monogram-name {
    margin-top: var(--space-2);

    color: var(--text-muted);
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    padding-bottom: var(--space-2);
    transform: translateX(0.13rem);
   
}

.header-strip {
    display: flex;
    align-items: center;
    height: 6rem;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-8);
}

.header-tagline {
    margin-left: var(--space-6);

    color: var(--text-muted);
    font-size: var(--font-sm);
    white-space: nowrap;
}

.header-tagline span {
    color: var(--primary-200);
    font-weight: var(--weight-semibold);
}

.header-nav {
    display: flex;
    align-self: stretch;
    align-items: flex-end;
    gap: clamp(var(--space-2), 1.5vw, var(--space-4));
    margin-left: auto;
}

@media (max-width: 60rem) {
    .header-tagline {
        display: none;
    }
}

@media (max-width: 52rem) {
    .header-nav {
        display: grid;
        grid-template-columns: repeat(2, max-content);
        column-gap: var(--space-2);
        row-gap: 0;
        align-content: center;
    }

    .header-nav a {
        justify-self: start;
    }
}

.header-nav a {
    position: relative;
    padding: var(--space-2);

    color: var(--text);
    font-family: var(--font-heading);
    font-size: var(--font-sm);
    font-weight: var(--weight-bold);
    letter-spacing: 0.04em;
    text-decoration: none;
    text-transform: uppercase;
}

.header-nav a::after {
    content: "";
    position: absolute;
    right: var(--space-2);
    bottom: calc(-1 * var(--border-width));
    left: var(--space-2);

    height: var(--border-width-med);
    background: var(--accent-400);
    transform: scaleX(0);
    transition: transform 150ms ease;
}

.header-nav a:is(:hover, [aria-current="page"])::after {
    transform: scaleX(1);
}

@media (max-width: 40rem) {
    .header-strip {
        min-height: 5rem;
        height: auto;
        padding: 0 var(--space-4) 0 var(--space-6);
    }

    .header-monogram {
        transform: translateX(var(--space-2));
    }

    .monogram-letters {
        font-size: 2.5rem;
        letter-spacing: -0.04em;
    }

    .monogram-name {        
        font-size: 0.5rem;
        letter-spacing: 0.08em;
    }

    .header-nav {
        display: grid;
        grid-template-columns: repeat(2, max-content);
        column-gap: var(--space-2);
        row-gap: 0;
        align-content: center;
    }

    .header-nav a {
        justify-self: start;
        font-size: 0.6875rem;
        letter-spacing: 0.02em;
    }
}
/* =========================
   Main
   ========================= */

.main-content {
    position: relative;
    isolation: isolate;

    flex: 1 0 auto;

    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-6) var(--space-8) 0;
    container-type: inline-size;
}

.main-content h1 {
    font-size: clamp(var(--font-xl), 3.95cqi, var(--font-4xl));
}

/* =========================
   Page panel generics
   ========================= */

.stage-panel {
    position: relative;
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
}

.section-heading {
    position: relative;
    margin: 0 0 var(--space-8);
    padding: var(--space-4) 0 var(--space-4) 0;
    
}

/* Align the subtitle optically with the curved display typeface used for the heading. */
.selection-box .section-heading p {
    transform: translateX(1px);
}

.section-heading--compact {
    margin-bottom: var(--space-4);
    padding-bottom: 0;
}


.primary-panel {
    background: linear-gradient(
        145deg,
        color-mix(in srgb, var(--primary-800) 80%, var(--primary-700)),
        color-mix(in srgb, var(--primary-800) 65%, var(--primary-850))
    );
    border: var(--border-width) solid var(--border-subtle);
    border-top-color: color-mix(
        in srgb,
        var(--primary-300) 35%,
        var(--border-subtle)
    );
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-inset-highlight);
}

.secondary-panel {
    background: var(--primary-800);
    border: 0;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-inset-highlight), var(--shadow-sm);
}

.text-panel {
    width: min(100%, calc(var(--reading-measure) + var(--space-16)));
    padding: var(--space-6) var(--space-8);
}

.text-page-panel {
    padding: var(--space-4) var(--space-8) var(--space-6);
}

.prose-copy {
    display: grid;
    gap: var(--space-4);
    max-width: var(--reading-measure);

    color: var(--text-muted);
    line-height: 1.6;
}

.prose-copy--spacious {
    gap: var(--space-6);
}

.prose-copy--relaxed {
    line-height: 1.7;
}

.prose-copy a:not(.support-callout-link) {
    color: var(--primary-200);
}

.prose-copy a:not(.support-callout-link):hover {
    color: var(--text);
}

.prose-section-heading {
    color: var(--text);
    font-size: var(--font-md);
    letter-spacing: -0.02em;
}

.prose-subsection-heading {
    color: var(--primary-100);
    font-family: var(--font-body);
    font-size: var(--font-base);
    font-weight: var(--weight-semibold);
    letter-spacing: 0.01em;
}

.panel-header {
    margin-bottom: var(--space-4);
}

.panel-header p {
    margin-top: var(--space-1);
    color: var(--text-muted);
    font-size: var(--font-sm);
}

.omnibus-panel--a {
    color: var(--primary-200);
}

.omnibus-panel--b {
    color: var(--accent-400);
}


/* =========================
   Omnibus selection
   ========================= */

.selection-box {
    container-type: inline-size;
    container-name: selection-box;
    padding: var(--space-4) 0 0;
}

.selection-box .section-heading {
    margin-bottom: var(--space-2);
    padding-inline: var(--space-4);
}

.omnibus-picker {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    column-gap: var(--space-6);
    row-gap: var(--space-2);
    margin: 0;
    padding: var(--space-4) var(--space-8) var(--space-8);
}

.omnibus-picker-main {
    --vs-width: clamp(6rem, calc(6.25cqi + 2.25rem), 7rem);
    --vs-line-width: clamp(1.5rem, calc(3.125cqi - 0.375rem), 2rem);

    width: 100%;
    min-width: 0;
    display: grid;
    grid-template-columns:
        minmax(0, 1fr)
        var(--vs-width)
        minmax(0, 1fr);
    align-items: end;
    column-gap: clamp(
        var(--space-2),
        calc(3.125cqi - 1.375rem),
        var(--space-4)
    );
    row-gap: var(--space-2);
}

.omnibus-picker:not(.omnibus-picker--single) .search-panel {
    min-width: 0;
    width: 100%;
}

.omnibus-picker:not(.omnibus-picker--single) .selection-action {
    grid-column: 1 / -1;
}

.search-panel {
    flex: 1 1 400px;
    padding: var(--space-4) 0 var(--space-6);
}

.tool-switch-callout {
    margin: 0;
    padding: var(--space-3) 0;
    color: var(--text-muted);
    font-size: var(--font-sm);
    text-align: center;
}

.tool-switch-callout p {
    margin: 0;
}

.tool-switch-button {
    color: var(--primary-200);
    font-weight: var(--weight-semibold);
    text-decoration: none;
}

.tool-switch-button:hover {
    color: var(--primary-100);
    text-decoration: underline;
}

.tool-switch-button:focus-visible {
    outline: var(--border-width-med) solid var(--primary-300);
    outline-offset: var(--space-1);
}

@container selection-box (width > 52rem) {
    .tool-layout {
        --tool-layout-spacing: clamp(var(--space-4), 2cqi, var(--space-8));

        display: grid;
        grid-template-columns: minmax(0, 1fr) 16rem;
        gap: var(--tool-layout-spacing);
        align-items: stretch;
        padding: var(--space-6) var(--tool-layout-spacing);
    }

    .omnibus-picker--single .omnibus-picker-main {
        display: flex;
        flex-wrap: nowrap;
        align-items: flex-end;
        justify-content: flex-start;
        gap: var(--space-4);
    }

    .tool-layout > .omnibus-picker {
        grid-column: 1 / -1;
        display: grid;
        grid-template-columns: minmax(0, 1fr) 16rem;
        gap: var(--tool-layout-spacing);
        align-items: stretch;
    }

    .tool-layout > .omnibus-picker .omnibus-picker-main {
        grid-column: 1;
    }

    .tool-layout > .omnibus-picker .tool-switch-callout {
        grid-column: 2;
        grid-row: 1;
    }

    .omnibus-picker--single .search-panel {
        flex: 1 1 0;
        min-width: 0;
        width: auto;
        padding-bottom: 0;
    }

    .omnibus-picker--single .selection-action {
        flex: 0 0 auto;
        width: auto;
    }

    .tool-layout .omnibus-picker {
        padding: 0;
        background: none;
        border: 0;
        box-shadow: none;
    }

    .tool-layout .omnibus-picker .search-panel {
        padding-top: var(--space-2);
    }

    .tool-layout .omnibus-picker:not(.omnibus-picker--single) .search-panel {
        padding-bottom: 0;
    }

    .tool-layout .omnibus-picker .omnibus-picker-main {
        padding-bottom: var(--space-2);
    }

    .tool-layout .omnibus-picker:not(.omnibus-picker--single) .omnibus-picker-main {
        row-gap: var(--space-6);
    }

    .tool-layout .tool-switch-callout {
        display: grid;
        grid-template-columns: var(--border-width) minmax(0, 1fr);
        column-gap: var(--tool-layout-spacing);
        align-items: center;
        padding: 0;
        text-align: left;
    }

    .tool-layout .tool-switch-callout::before {
        content: "";
        align-self: stretch;
        background: var(--border-color);
    }

    .tool-layout .tool-switch-button {
        display: block;
        margin-top: var(--space-1);
    }

}

.search-suggestions {
    max-height: 20rem;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    touch-action: pan-y;

    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 100;

    background: var(--primary-900);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: 0 8px 20px hsl(207 89% 2% / 0.55);
}

.search-suggestion {
    display: flex;
    align-items: center;
    width: 100%;
    padding: var(--space-3) var(--space-4);

    background: transparent;
    border: 0;

    color: var(--text-muted);
    font: inherit;
    font-size: var(--font-sm);
    text-align: left;
    cursor: pointer;
    transition:
        background-color 150ms ease,
        color 150ms ease;
}

.search-suggestion:hover {
    background: var(--primary-700);
    color: var(--text);
}

.search-suggestion img {
    width: 40px;
    height: 60px;
    object-fit: cover;
    flex-shrink: 0;
    margin-right: var(--space-3);
}

.search-status {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin: 0;
    padding: var(--space-3) var(--space-4);

    color: var(--text-muted);
    font-size: var(--font-sm);
    line-height: 1.4;
}

.search-status--error {
    color: var(--accent-300);
}

.search-status-spinner {
    width: 1rem;
    aspect-ratio: 1;
    flex: 0 0 auto;

    border: var(--border-width-med) solid var(--primary-500);
    border-top-color: var(--primary-200);
    border-radius: 50%;
    animation: search-status-spin 700ms linear infinite;
}

@keyframes search-status-spin {
    to {
        transform: rotate(1turn);
    }
}

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

.search-panel-hint {
    margin-top: var(--space-1);
    color: var(--text-muted);
    font-size: var(--font-xs);
}

/* =========================
   Comparison VS
   ========================= */

.vs-center {
    width: 100%;
    height: 2.5rem;

    display: grid;
    grid-template-columns:
        var(--vs-line-width)
        auto
        var(--vs-line-width);
    align-items: center;
    align-self: end;
    justify-content: center;
    gap: var(--space-1);
}

.vs-center::before,
.vs-center::after {
    content: "";
    width: auto;
    height: 1px;

    background: var(--grey-600);
}

.vs-text {
    color: var(--text);
    font-size: clamp(var(--font-lg), 2cqi, var(--font-xl));
    font-weight: var(--weight-bold);
    letter-spacing: -0.04em;
    line-height: 1;
}

@container selection-box (width <= 52rem) {
    .tool-layout.primary-panel {
        background: transparent;
        border: 0;
        box-shadow: none;
    }

    .omnibus-picker-main {
        display: flex;
        flex-direction: column;
        flex-wrap: nowrap;
        align-items: stretch;
        gap: var(--space-2);
    }

    .search-panel {
        flex: none;
        width: 100%;
        padding-bottom: 0;
    }

    .search-panel--b {
        padding-top: 0;
    }

    .search-panel-hint {
        display: none;
    }

    .selection-action {
        flex: none;
        width: 100%;
        margin-top: var(--space-1);
    }

    .omnibus-picker {
        padding-bottom: var(--space-4);
    }

    .omnibus-picker .tool-switch-callout {
        flex: 0 0 100%;
        width: 100%;
        margin-top: var(--space-4);
        padding-top: var(--space-3);
        padding-bottom: 0;
        position: relative;
        text-align: center;
    }

    .omnibus-picker .tool-switch-callout::before {
        position: absolute;
        top: 0;
        left: 50%;
        width: 75%;
        height: var(--border-width);
        background: var(--border-color);
        content: "";
        transform: translateX(-50%);
    }

    .vs-center {
        width: 100%;
        height: 2.5rem;
        align-self: auto;
        margin-block-start: var(--space-4);
        margin-block-end: calc(-1 * var(--space-4));
        grid-template-columns:
            calc(var(--vs-line-width) + var(--vs-line-width))
            auto
            calc(var(--vs-line-width) + var(--vs-line-width));
        gap: var(--space-2);
    }

    .vs-center::before {
        display: block;
        background: linear-gradient(90deg, transparent, var(--grey-600));
    }

    .vs-center::after {
        display: block;
        background: linear-gradient(270deg, transparent, var(--grey-600));
    }

    .vs-text {
        font-size: var(--font-2xl);
    }

}

/* =========================
   Search
   ========================= */

.search-control {
    position: relative;
    margin-top: var(--space-3);   
    background: var(--primary-900);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--border-radius); 
}

.search-panel--a .search-control {
    border: var(--border-width) solid var(--primary-200);
}

.search-panel--b .search-control {
    border: var(--border-width) solid var(--accent-500);
}

.search-control:has(input[aria-invalid="true"]) {
    border-color: var(--accent-300);
}

.search-input-wrapper {
    display: flex;
    align-items: center;
}

.search-input-wrapper input {
    flex: 1;
    min-width: 0;
    background: transparent;
    border: none;     
    outline: none;
    font: inherit;
    color: var(--text);
    padding: var(--space-2);
}

.search-icon {
    width: 1.25rem;
    height: 1.25rem;
    margin-left: var(--space-2);
    color: var(--text);
    flex-shrink: 0;
}

/* =========================
   Selection action
   ========================= */

.selection-action {
    flex: 1 0 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.selection-error {
    margin: var(--space-2) 0 0;
    color: var(--accent-300);
    font-size: var(--font-sm);
    text-align: center;
}

.compare-button {  
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: 2.5rem;
    min-height: 2.5rem;
    padding: var(--space-2) var(--space-8);
    white-space: nowrap;
    background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
    color: var(--text);
    border: var(--border-width) solid var(--accent-300);
    border-radius: var(--border-radius);
    box-shadow:
        inset 0 1px 0 var(--action-highlight),
        0 0.75rem 1.5rem var(--action-shadow);

    font: inherit;
    font-weight: var(--weight-semibold);

    cursor: pointer;
    transition:
        background 150ms ease,
        border-color 150ms ease,
        box-shadow 150ms ease;
}

.compare-button:hover {
    background: linear-gradient(135deg, var(--accent-400), var(--accent-500));
    border-color: var(--accent-200);
    box-shadow:
        inset 0 1px 0 hsl(35 88% 90% / 0.24),
        0 1rem 2rem hsl(24 95% 5% / 0.62);
}

.compare-button:focus-visible {
    outline: var(--border-width-med) solid var(--text);
    outline-offset: var(--space-2);
}

.search-icon-button {
    width: 1.5rem;
    height: 1.25rem;
    color: var(--text);
}

/* Issue-count note */
.issue-counts-note {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin: var(--space-2) 0 0;
    padding: var(--space-3) var(--space-4);
    color: var(--text-muted);
    background: color-mix(in srgb, var(--primary-850) 88%, var(--primary-800));
    border: var(--border-width) solid
        color-mix(in srgb, var(--primary-400) 22%, var(--border-subtle));
    border-radius: var(--border-radius);
}

.issue-counts-note-icon {
    flex: 0 0 auto;
    width: 1.5rem;
    height: 1.5rem;
    color: var(--primary-200);
}

.issue-counts-note-content {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    align-items: baseline;
    gap: var(--space-1);
    flex: 1;
    min-width: 0;
    padding-left: var(--space-3);
    border-left: var(--border-width) solid
        color-mix(in srgb, var(--primary-400) 35%, var(--border-subtle));
}

.issue-counts-note h2 {
    color: var(--primary-200);
    font-family: var(--font-body);
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
    text-transform: none;
}

.issue-counts-note p {
    display: flex;
    align-items: baseline;
    gap: var(--space-3);
    font-size: var(--font-sm);
    line-height: 1.5;
}

.issue-counts-note-copy {
    flex: 1;
}

.issue-counts-note-copy-compact {
    display: none;
}

.issue-counts-note a {
    color: var(--primary-200);
    font-weight: var(--weight-medium);
    white-space: nowrap;
}

.issue-counts-note a:hover {
    color: var(--text);
}

@container selection-box (width <= 52rem) {
    .issue-counts-note-content {
        display: block;
    }

    .issue-counts-note h2 {
        display: none;
    }

    .issue-counts-note p {
        display: block;
    }

    .issue-counts-note-detail {
        display: none;
    }

    .issue-counts-note-copy-full {
        display: none;
    }

    .issue-counts-note-copy-compact {
        display: inline;
    }
}

/* =========================
   Shared List Panels
   ========================= */

.comparison-list-panel {
    margin: var(--space-6) 0 0;
    padding: var(--space-3) 0 0;
}

.comparison-list-panel .panel-header {
    padding-inline: var(--space-4);
}

.comparison-list-panel--recent .panel-header {
    margin-bottom: var(--space-2);
}

.example-comparisons-list,
.recent-comparisons-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    margin: 0;
    padding: 0;
    list-style: none;
}

/* Homepage: featured omnibuses */
.featured-omnibuses-list {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(var(--space-2), 1.25vw, var(--space-4));
    margin: 0;
    padding: 0;
    list-style: none;
}

.featured-omnibus-result-row {
    min-width: 0;
}

.featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.featured-omnibus-result-link {
    display: grid;
    grid-template-columns: 5rem minmax(0, 1fr);
    align-items: center;
    gap: var(--space-3);
    min-height: 9rem;
    padding: var(--space-3);
    color: inherit;
    text-decoration: none;
    border: var(--border-width) solid var(--border-subtle);
    transition: background-color 150ms ease, border-color 150ms ease;
}

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-link {
        flex: 0 0 auto;
        height: auto;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-link > .featured-omnibus-result-cover,
    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-link > .featured-omnibus-result-content,
    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-link > .featured-omnibus-result-metadata {
        transform: translateY(-2px);
    }

.featured-omnibus-result-link:hover {
    background: var(--primary-700);
    border-color: var(--primary-500);
}

.featured-omnibus-result-link:focus-visible {
    outline: var(--border-width-med) solid var(--primary-300);
    outline-offset: var(--space-1);
}

.featured-omnibus-result-cover {
    width: 5rem;
    aspect-ratio: 2 / 3;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.featured-omnibus-result-content {
    display: grid;
    align-self: start;
    align-content: start;
    gap: var(--space-2);
    min-width: 0;
}

.featured-omnibus-result-details {
    display: contents;
}

.featured-omnibus-result-metadata {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    grid-column: 2;
    align-items: center;
    gap: var(--space-2);
    min-width: 0;
    padding-top: 0;
}

.featured-omnibus-result-stats {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2);
    min-width: 0;
}

.featured-omnibus-result-name {
    color: var(--primary-100);
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
}

.featured-omnibus-result-relationship {
    color: var(--primary-200);
    font-size: var(--font-xs);
    font-weight: var(--weight-semibold);
    line-height: 1.35;
}

.featured-omnibus-result-stat.overlap-unique-stat-card {
    --featured-stat-inset: var(--space-3);
    min-height: 7rem;
    padding: var(--featured-stat-inset);
}

.featured-omnibus-result-stat-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-width: 0;
    padding-bottom: var(--space-2);
    border-bottom: var(--border-width) solid var(--border-divider);
}

.featured-omnibus-result-stat .overlap-unique-stat-icon {
    position: static;
    flex: 0 0 auto;
    width: 1.5rem;
    height: 1.5rem;
    opacity: 1;
}

.featured-omnibus-result-stat .overlap-unique-stat-label {
    min-width: 0;
    padding: 0;
    font-size: 0.65rem;
    white-space: nowrap;
}

.featured-omnibus-result-stat-body {
    display: grid;
    grid-template-columns: max-content minmax(0, 1fr);
    align-items: center;
    gap: var(--space-4);
    min-width: 0;
    padding-top: var(--space-2);
}

.featured-omnibus-result-stat-compact-summary {
    display: none;
}

.featured-omnibus-result-stat.overlap-unique-stat-card strong {
    margin-top: 0;
    font-size: clamp(2rem, 4vw, 2.75rem);
}

.featured-omnibus-result-stat-relationship {
    min-width: 0;
    margin: 0;
    color: var(--text);
    font-size: var(--font-sm);
    line-height: 1.25;
}

.featured-omnibus-result-stat-relationship-prefix {
    display: block;
    color: var(--text-muted);
    font-size: 0.875em;
    font-weight: var(--weight-regular);
    line-height: 1.2;
}

.featured-omnibus-result-stat-relationship-name {
    display: block;
    font-weight: var(--weight-semibold);
}

.featured-omnibus-result-action {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 2.25rem;
    padding: var(--space-2) var(--space-3);
    color: var(--text);
    background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
    border: var(--border-width) solid var(--accent-300);
    border-radius: var(--border-radius);
    box-shadow: inset 0 1px 0 var(--action-highlight), 0 0.5rem 1rem var(--action-shadow);
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
    white-space: nowrap;
}

/* Shared recent-history lists */
.recent-comparisons-list {
    gap: 0;
}

.recent-overlap-search-covers {
    grid-template-columns: 1.75rem;
}

.example-comparisons-empty,
.recent-comparisons-empty {
    grid-column: 1 / -1;
    padding: var(--space-4);
    color: var(--text-muted);
    background: var(--primary-800);
    border: var(--border-width) solid var(--grey-700);
    border-radius: var(--border-radius);
    font-size: var(--font-sm);
    text-align: center;
}

.example-comparison-result-row,
.recent-comparison-row {
    min-width: 0;
}

/* Compare page: example comparisons */
.example-comparison-result-link {
    display: grid;
    grid-template-columns:
        1.625rem
        minmax(0, 1fr)
        1.625rem
        minmax(0, 1fr)
        auto;
    align-items: center;
    gap: var(--space-2);
    min-height: 3.625rem;
    padding: 0.625rem var(--space-3);
    color: inherit;
    text-decoration: none;
    transition:
        background-color 150ms ease,
        border-color 150ms ease;
}

/* Shared recent-history rows */
.recent-comparison-link {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) 7rem 8rem max-content;
    align-items: center;
    gap: var(--space-4);
    min-height: 3.75rem;
    padding: var(--space-1) var(--space-6);
    color: inherit;
    text-decoration: none;
    background: transparent;
    border: 0;
    border-bottom: var(--border-width) solid var(--border-subtle);
    transition:
        background-color 150ms ease,
        border-color 150ms ease;
}

.example-comparison-result-link:hover {
    background: var(--primary-700);
    border-color: var(--primary-500);
}

.recent-comparison-link:hover {
    background: color-mix(in srgb, var(--primary-700) 45%, transparent);
    border-bottom-color: var(--primary-500);
}

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

.example-comparison-result-link:focus-visible,
.recent-comparison-link:focus-visible {
    outline: var(--border-width-med) solid var(--text);
    outline-offset: var(--space-1);
}

.example-comparison-result-covers,
.example-comparison-result-titles,
.example-comparison-result-metadata {
    display: contents;
}

.example-comparison-result-cover {
    width: 1.625rem;
    height: 2.4375rem;
    object-fit: cover;
    border: var(--border-width) solid var(--border-color);
    border-radius: 0.2rem;
}

.recent-comparison-covers {
    display: grid;
    grid-template-columns: repeat(2, 1.75rem);
    gap: var(--space-3);
}

.recent-comparison-cover {
    width: 1.75rem;
    height: 2.625rem;
    object-fit: cover;
    border: var(--border-width) solid var(--border-color);
    border-radius: 0.2rem;
}

.example-comparison-result-cover--a {
    grid-column: 1;
    grid-row: 1;
}

.example-comparison-result-cover--b {
    grid-column: 3;
    grid-row: 1;
}

.example-comparison-result-cover-divider,
.example-comparison-result-title-divider,
.example-comparison-result-description,
.example-comparison-result-action {
    display: none;
}

.example-comparison-result-name {
    min-width: 0;
    color: var(--text);
    font-size: var(--font-xs);
    font-weight: var(--weight-semibold);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.recent-comparison-title {
    max-inline-size: 84ch;
    min-width: 0;
    display: flex;
    align-items: baseline;
    color: var(--text-muted);
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
    white-space: nowrap;
}

.recent-comparison-title-name {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
}

.recent-comparison-title-name--a {
    max-inline-size: 60%;
    flex: 0 1 auto;
}

.recent-comparison-title-name--b {
    flex: 1 1 0;
}

.recent-comparison-title-divider {
    flex: 0 0 auto;
    margin-inline: var(--space-2);
    color: var(--grey-400);
    font-size: var(--font-xs);
    font-weight: var(--weight-normal);
}

.recent-comparison-date {
    grid-column: 3;
    justify-self: end;
    color: var(--text-muted);
    font-size: var(--font-xs);
    white-space: nowrap;
}

.recent-comparison-metadata {
    display: contents;
}

.example-comparison-result-name--a {
    grid-column: 2;
    grid-row: 1;
}

.example-comparison-result-name--b {
    grid-column: 4;
    grid-row: 1;
}

.example-comparison-result-overlap,
.recent-comparison-overlap {
    padding: 0.2rem var(--space-2);
    color: var(--overlap-300);
    background: var(--overlap-700);
    border: var(--border-width) solid var(--overlap-600);
    border-radius: var(--border-radius);
    font-size: var(--font-xs);
    font-weight: var(--weight-semibold);
    white-space: nowrap;
}

.example-comparison-result-overlap {
    grid-column: 5;
    grid-row: 1;
}

.recent-comparison-overlap {
    grid-column: 4;
    margin-left: var(--space-4);
}

.recent-comparison-action {
    grid-column: 5;
    margin-left: var(--space-4);
    color: var(--primary-200);
    font-size: var(--font-xs);
    font-weight: var(--weight-semibold);
    white-space: nowrap;
}

/* Compare page: compact example comparisons */
@media (max-width: 48rem) {
    .example-comparison-result-link {
        --compact-cover-width: 2rem;
        --compact-cover-height: 3rem;
        grid-template-columns: auto minmax(0, 1fr) auto;
        grid-template-rows: auto auto;
        column-gap: var(--space-3);
        row-gap: var(--space-1);
        min-height: 5rem;
        padding: var(--space-2) var(--space-3);
    }

    .example-comparison-result-covers {
        display: grid;
        grid-column: 1;
        grid-row: 1 / span 2;
        grid-template-columns: repeat(2, var(--compact-cover-width));
        gap: var(--space-1);
    }

    .example-comparison-result-cover,
    .example-comparison-result-cover--a,
    .example-comparison-result-cover--b {
        width: var(--compact-cover-width);
        height: var(--compact-cover-height);
    }

    .example-comparison-result-titles {
        grid-column: 2;
        grid-row: 1;
        display: -webkit-box;
        max-inline-size: none;
        overflow: hidden;
        font-size: var(--font-sm);
        font-weight: var(--weight-semibold);
        line-height: 1.35;
        white-space: normal;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }

    .example-comparison-result-name,
    .example-comparison-result-name--a,
    .example-comparison-result-name--b {
        display: inline;
        overflow: visible;
        text-overflow: clip;
        font-size: inherit;
        font-weight: inherit;
        white-space: normal;
    }

    .example-comparison-result-title-divider {
        display: inline;
        margin-inline: var(--space-2);
        color: var(--grey-400);
        font-size: var(--font-xs);
        font-weight: var(--weight-normal);
    }

    .example-comparison-result-overlap {
        grid-column: 2;
        grid-row: 2;
        align-self: center;
        margin-left: 0;
        padding: 0;
        color: var(--overlap-400);
        background: transparent;
        border: 0;
        border-radius: 0;
        font-weight: var(--weight-semibold);
    }

    .example-comparison-result-action {
        display: grid;
        grid-column: 3;
        grid-row: 1 / span 2;
        place-items: center;
        margin-left: 0;
        font-size: 0;
    }

    .example-comparison-result-action::after {
        color: var(--primary-100);
        content: "\203A";
        font-size: var(--font-xl);
        line-height: 1;
    }

    .example-comparisons-list {
        gap: var(--space-2);
    }

    .example-comparison-result-cover--a {
        grid-column: 1;
        grid-row: 1;
    }

    .example-comparison-result-cover--b {
        grid-column: 2;
        grid-row: 1;
    }

}

/* Homepage: wide recent searches and featured omnibuses */
/* Featured cards are intentionally different from the compact recent list. */
@media (min-width: 48.0625rem) {
    .recent-overlap-search-link--with-largest {
        --recent-overlap-summary-width: 13rem;
        grid-template-columns: auto minmax(0, 1fr) 7rem var(--recent-overlap-summary-width) max-content;
    }

    .recent-overlap-search-link--with-largest .recent-comparison-overlap {
        text-align: center;
    }

    .recent-overlap-search-link--with-largest .recent-comparison-action {
        grid-column: 5;
        grid-row: 1;
        margin-left: var(--space-4);
    }

    /* Homepage: featured omnibuses */
    .featured-omnibus-result-row {
        display: flex;
        align-self: start;
    }

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

    .featured-omnibus-result-link {
        --featured-card-padding: clamp(var(--space-2), 1.25vw, var(--space-4));
        --featured-section-gap: clamp(var(--space-2), 1vw, var(--space-3));

        display: grid;
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr auto;
        align-items: start;
        gap: var(--featured-section-gap);
        width: 100%;
        min-height: 0;
        padding: var(--featured-card-padding);
    }

    .featured-omnibus-result-cover {
        grid-column: 1;
        grid-row: 1;
        width: 100%;
        height: auto;
    }

    .featured-omnibus-result-content {
        grid-column: 1;
        grid-row: 2;
        align-content: start;
        justify-items: start;
        width: auto;
    }

    .featured-omnibus-result-name {
        font-size: clamp(var(--font-sm), 1.25vw, var(--font-base));
        line-height: 1.35;
    }

    .featured-omnibus-result-metadata {
        grid-column: 1 / -1;
        grid-row: 3;
        width: 100%;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-link {
        --primary-title-summary-gap: var(--space-2);
        --primary-stat-action-gap: clamp(var(--space-1), calc(4.7cqi - 41px), var(--space-3));
        --primary-title-top-inset: clamp(0px, calc(10cqi - 96px), var(--space-4));
        --primary-cta-bottom-inset: clamp(var(--space-1), calc(7cqi - 58px), calc(var(--space-4) + var(--space-1)));

        grid-template-columns: clamp(10.5rem, 19vw, 14rem) minmax(0, 1fr);
        grid-template-rows: auto;
        align-items: start;
        column-gap: clamp(var(--space-4), 1.5vw, 1.2rem);
        padding-block: var(--space-6);
        padding-inline: var(--space-6);
        row-gap: 0;
        border-color: var(--primary-300);
        box-shadow:
            0 0 1.5rem color-mix(in srgb, var(--primary-400) 20%, transparent),
            inset 0 0 1rem color-mix(in srgb, var(--primary-400) 14%, transparent);
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-details {
        display: grid;
        grid-column: 2;
        grid-row: 1;
        grid-template-columns: minmax(0, 1fr);
        grid-template-rows: auto auto minmax(var(--primary-stat-action-gap), 1fr) auto auto;
        align-self: stretch;
        min-width: 0;
        padding-top: var(--primary-title-top-inset);
        padding-bottom: var(--primary-cta-bottom-inset);
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-content,
    .featured-omnibus-result-row--primary .featured-omnibus-result-metadata {
        display: contents;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-action {
        grid-row: 5;
        margin-top: var(--primary-stat-action-gap);
        font-size: clamp(var(--font-xs), 1.15cqi, var(--font-sm));
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stats {
        grid-row: 4;
        margin-top: 0;
        position: static;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-name {
        display: -webkit-box;
        grid-row: 1;
        overflow: hidden;
        color: var(--text);
        font-size: clamp(var(--font-base), 1.85cqi, 1.4rem);
        line-height: 1.2;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-relationship {
        grid-row: 2;
        margin-top: var(--primary-title-summary-gap);
        color: var(--primary-100);
        font-size: clamp(var(--font-xs), 1.25cqi, var(--font-sm));
        font-weight: var(--weight-normal);
        line-height: 1.35;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat.overlap-unique-stat-card {
        --featured-stat-inset: clamp(var(--space-2), 1.25cqi, var(--space-4));
        min-height: 0;
        padding-top: clamp(var(--space-1), 1cqi, var(--space-2));
        padding-bottom: clamp(var(--space-2), 1.75cqi, calc(var(--space-3) + 2px));
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat.overlap-unique-stat-card strong {
        align-self: center;
        margin-top: 0;
        font-size: clamp(2.25rem, calc(5.1cqi + var(--space-1)), 4.25rem);
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat-header {
        margin-inline: calc(-1 * var(--featured-stat-inset));
        padding-inline: var(--featured-stat-inset);
        padding-bottom: var(--space-1);
        border-bottom-color: var(--overlap-600);
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat .overlap-unique-stat-label {
        font-size: clamp(0.5625rem, 1.05cqi, 0.8125rem);
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat .overlap-unique-stat-icon {
        width: clamp(1.25rem, 1.8cqi, 1.375rem);
        height: clamp(1.25rem, 1.8cqi, 1.375rem);
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat-body {
        width: 100%;
        max-width: none;
        margin-inline: 0;
        grid-template-columns: max-content minmax(0, min(60%, 18rem));
        justify-content: center;
        gap: clamp(
            var(--space-2),
            1.25cqi,
            var(--space-4)
        );
        padding-top: clamp(var(--space-1), 1.25cqi, calc(var(--space-2) + 2px));
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat-relationship {
        font-size: clamp(0.625rem, 1.15cqi, var(--font-sm));
        line-height: 1.15;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat-relationship-prefix {
        margin-bottom: 2px;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat-relationship-name {
        color: var(--overlap-300);
        font-weight: var(--weight-bold);
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-link {
        --featured-card-padding: clamp(var(--space-2), 1cqi, var(--space-3));
        --featured-section-gap: var(--space-2);
        min-height: 0;
        justify-items: stretch;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) {
        align-self: stretch;
        height: auto;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-cover {
        justify-self: center;
        width: min(100%, 9.5rem);
        aspect-ratio: 2 / 3;
        object-fit: cover;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-content {
        align-self: stretch;
        align-content: center;
        justify-items: center;
        text-align: center;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-name {
        display: -webkit-box;
        overflow: hidden;
        color: var(--text);
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-relationship {
        display: none;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-metadata {
        gap: var(--featured-section-gap);
        padding-top: 0;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat.overlap-unique-stat-card {
        --featured-stat-inset: var(--space-2);
        display: grid;
        grid-template-columns: minmax(0, 1fr);
        grid-template-rows: minmax(0, 1fr);
        row-gap: 0;
        min-height: 3.5rem;
        height: 3.5rem;
        padding-block: 0;
        padding-inline: var(--featured-stat-inset);
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat .overlap-unique-stat-icon {
        width: 1.25rem;
        height: 1.25rem;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat .overlap-unique-stat-label {
        padding: 0;
        font-size: 0.625rem;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat.overlap-unique-stat-card strong {
        margin-top: 0;
        font-size: clamp(1.5rem, 2.5vw, 2rem);
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat-header {
        display: none;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat-body {
        grid-column: 1;
        grid-row: 1;
        gap: var(--space-2);
        padding-block: 0;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat-relationship {
        font-size: 0.625rem;
        line-height: 1.1;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat .overlap-unique-stat-icon {
        width: 0.9375rem;
        height: 0.9375rem;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat .overlap-unique-stat-label {
        font-size: 0.5625rem;
        letter-spacing: 0.04em;
        line-height: 1;
        text-transform: uppercase;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat.overlap-unique-stat-card strong {
        align-self: center;
        justify-self: center;
        font-size: clamp(1.625rem, 2.5cqi, 1.875rem);
        line-height: 1;
        text-align: center;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat-relationship-prefix {
        display: block;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat-relationship-name {
        display: -webkit-box;
        color: var(--text);
        font-size: 0.625rem;
        line-height: 1.15;
        overflow: hidden;
        overflow-wrap: anywhere;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-action {
        min-height: 0;
        padding: 0;
        color: var(--primary-200);
        background: transparent;
        border: 0;
        box-shadow: none;
        font-size: var(--font-xs);
        justify-content: center;
        text-decoration: none;
    }

    /* Compare page: example comparisons */
    .example-comparisons-list {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: clamp(var(--space-2), 1.25vw, 1.25rem);
    }

    .example-comparison-result-row {
        display: flex;
    }

    .example-comparison-result-link {
        --featured-card-padding: clamp(var(--space-2), 1.25vw, var(--space-4));
        --featured-cover-max-width: 6.25rem;
        --featured-cover-gap: clamp(var(--space-1), 0.75vw, var(--space-3));
        --featured-cover-gap-right: calc(var(--featured-cover-gap) + 0.125rem);
        --featured-divider-width: 1.25rem;
        --featured-section-gap: clamp(var(--space-2), 1vw, var(--space-3));
        --featured-content-width: min(
            100%,
            calc(
                var(--featured-cover-max-width) +
                var(--featured-cover-max-width) +
                var(--featured-cover-gap) +
                var(--featured-cover-gap-right) +
                var(--featured-divider-width)
            )
        );

        display: grid;
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 1fr auto auto;
        align-content: start;
        justify-items: center;
        gap: var(--featured-section-gap);
        width: 100%;
        min-height: 0;
        padding: var(--featured-card-padding);
    }

    .example-comparison-result-covers {
        display: grid;
        grid-template-columns:
            minmax(0, var(--featured-cover-max-width))
            var(--featured-cover-gap)
            var(--featured-divider-width)
            var(--featured-cover-gap-right)
            minmax(0, var(--featured-cover-max-width));
        align-items: center;
        justify-content: center;
        width: var(--featured-content-width);
        margin-bottom: var(--space-1);
    }

    .example-comparison-result-cover,
    .example-comparison-result-cover--a,
    .example-comparison-result-cover--b {
        width: 100%;
        height: auto;
        aspect-ratio: 2 / 3;
    }

    .example-comparison-result-cover-divider {
        display: block;
        grid-column: 3;
        color: var(--grey-400);
        font-size: clamp(var(--font-xs), 1.25vw, var(--font-base));
        font-weight: var(--weight-bold);
        text-align: center;
        text-transform: uppercase;
    }

    .example-comparison-result-titles {
        display: grid;
        grid-template-rows: auto auto auto;
        gap: var(--space-2);
        width: var(--featured-content-width);
    }

    .example-comparison-result-name,
    .example-comparison-result-name--a,
    .example-comparison-result-name--b {
        display: -webkit-box;
        max-height: 2.7em;
        overflow: hidden;
        color: var(--text);
        font-size: clamp(var(--font-xs), 1.25vw, var(--font-base));
        font-weight: var(--weight-semibold);
        line-height: 1.35;
        text-align: left;
        white-space: normal;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }

    .example-comparison-result-name--a {
        grid-column: 1;
        grid-row: 1;
    }

    .example-comparison-result-title-divider {
        display: block;
        grid-column: 1;
        grid-row: 2;
        justify-self: start;
        color: var(--grey-400);
        font-size: var(--font-xs);
    }

    .example-comparison-result-name--b {
        grid-column: 1;
        grid-row: 3;
    }

    .example-comparison-result-description {
        display: block;
        grid-row: 4;
        width: var(--featured-content-width);
        color: var(--text-muted);
        font-size: var(--font-xs);
        line-height: 1.4;
    }

    .example-comparison-result-cover--b {
        grid-column: 5;
    }

    .example-comparison-result-metadata {
        display: flex;
        grid-row: 5;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: var(--space-1);
        width: var(--featured-content-width);
        padding-top: var(--space-2);
        border-top: var(--border-width) solid var(--border-subtle);
    }

    .example-comparison-result-action {
        display: inline-flex;
        align-items: center;
        margin-left: auto;
        color: var(--primary-200);
        font-size: var(--font-xs);
        font-weight: var(--weight-semibold);
    }
}

/* =========================
   Shared Result-Page Shell
   ========================= */
.comparison-box {
    padding: var(--space-4) 0 0;
}

.comparison-box .section-heading {
    margin-bottom: var(--space-2);
}

.comparison-box > .new-comparison-link,
.comparison-box > .section-heading {
    margin-inline: var(--space-8);
}

.new-comparison-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    width: fit-content;

    color: var(--primary-200);
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
    text-decoration: none;
}

.new-comparison-link span {
    display: inline-block;
    transition: transform 150ms ease;
}

.new-comparison-link:hover {
    color: var(--text);
}

.new-comparison-link:hover span {
    transform: translateX(calc(-1 * var(--space-1)));
}

.new-comparison-link:focus-visible {
    outline: var(--border-width-med) solid var(--primary-300);
    outline-offset: var(--space-1);
    border-radius: var(--border-radius);
}

.comparison-summary {
    --comparison-summary-height: 16.5rem;

    margin-top: 0;
    padding: var(--space-2) 0 var(--space-6);
    position: relative;
}

.comparison-state {
    display: grid;
    min-height: 18rem;
    place-items: center;
    padding: var(--space-6);
    text-align: center;
}

.comparison-state-content {
    display: grid;
    justify-items: center;
    gap: var(--space-3);
    max-width: 36ch;
}

.comparison-state .search-status-spinner {
    width: 1.5rem;
}

.comparison-state p {
    margin: 0;
    color: var(--text-muted);
    font-size: var(--font-sm);
    line-height: 1.5;
}

.comparison-state--error h2 {
    color: var(--accent-300);
}

/* =========================
   Overlap Finder
   ========================= */
.overlap-source-summary {
    --overlap-panel-inset: var(--space-8);

    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(22rem, 0.8fr);
    align-items: center;
    column-gap: var(--space-12);
    row-gap: var(--space-4);
    margin-top: 0;
    padding: var(--overlap-panel-inset);
}

.overlap-source-primary {
    grid-column: 1;
    grid-row: 1;
}

.overlap-source-book {
    display: grid;
    grid-template-columns: 17rem minmax(0, 1fr);
    gap: var(--space-6);
    min-height: 25.5rem;
    align-items: stretch;
    align-self: start;
}

.overlap-source-cover {
    grid-column: 1;
    grid-row: 1;
    align-self: start;
    width: 17rem;
    aspect-ratio: 2 / 3;
    object-fit: cover;
    border: var(--border-width) solid var(--border-divider);
    border-radius: var(--border-radius);
}

.overlap-source-cover--loading {
    background: linear-gradient(
        135deg,
        var(--primary-700),
        var(--primary-800)
    );
    border: var(--border-width) solid var(--border-subtle);
}

.overlap-source-title-block {
    /* Reserve the two-line title-and-count row on the wide layout. */
    min-height: 5.8125rem;
}

.overlap-source-details h2 {
    margin: 0;
    display: -webkit-box;
    min-height: 0;
    overflow: hidden;
    color: var(--primary-200);
    font-size: var(--font-lg);
    line-height: 1.35;

    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.overlap-source-details {
    grid-column: 2;
    grid-row: 1;
    align-self: stretch;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.overlap-source-details .omnibus-total {
    margin-top: var(--space-2);
}

.overlap-source-first-printing {
    padding-top: var(--space-4);
}

.overlap-source-first-printing-heading {
    margin: 0 0 var(--space-2);
    color: var(--text-muted);
    font-size: var(--font-xs);
    font-weight: var(--weight-semibold);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.overlap-source-first-printing-list {
    display: flex;
    align-items: stretch;
}

.overlap-source-first-printing-list > dl {
    flex: 0 0 auto;
    margin: 0;
    min-width: 0;
}

.overlap-source-first-printing-divider {
    display: flex;
    flex: 1 1 var(--space-4);
    justify-content: center;
    min-width: var(--space-4);
}

.overlap-source-first-printing-divider-line {
    border-left: var(--border-width) solid var(--border-divider);
}

.overlap-source-first-printing-list dt {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    color: var(--text-muted);
    font-size: var(--font-xs);
}

.overlap-source-first-printing-list dd {
    margin: var(--space-2) 0 0;
    color: var(--text);
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
    overflow-wrap: anywhere;
}

.overlap-source-first-printing-icon {
    width: 0.875rem;
    height: 0.875rem;
    flex: 0 0 auto;
    background: var(--primary-300);

    mask-position: center;
    mask-repeat: no-repeat;
    mask-size: contain;

    -webkit-mask-position: center;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-size: contain;
}

.overlap-source-first-printing-icon--published {
    mask-image: url("icons/ant-design--calendar-outlined.svg");
    -webkit-mask-image: url("icons/ant-design--calendar-outlined.svg");
}

.overlap-source-first-printing-icon--pages {
    mask-image: url("icons/gridicons--pages.svg");
    -webkit-mask-image: url("icons/gridicons--pages.svg");
}

.overlap-source-first-printing-icon--isbn13 {
    mask-image: url("icons/boxicons--barcode.svg");
    -webkit-mask-image: url("icons/boxicons--barcode.svg");
}

.overlap-source-purchase-heading {
    --purchase-colour: var(--primary-300);

    margin: 0;
}

.overlap-source-purchase-options .overlap-source-purchase-heading sup {
    color: var(--text-muted);
}

.overlap-source-purchase-options {
    margin-top: var(--space-4);
}

.purchase-links.overlap-source-purchase-links {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
    gap: var(--space-3);
    --purchase-colour: var(--primary-300);
}

.overlap-source-affiliate-disclosure {
    grid-column: 1;
    grid-row: 1;
    align-self: end;
    margin: 0 0 0 calc(17rem + var(--space-6));
    color: var(--text-muted);
    font-size: var(--font-xs);
    font-style: italic;
    line-height: 1.5;
    text-align: center;
}

.overlap-source-purchase-links .purchase-link:nth-child(n) {
    grid-column: auto;
    grid-row: auto;
    justify-self: stretch;
    justify-content: center;
    position: relative;
    width: 100%;
    margin: 0;
}

.overlap-source-purchase-links .purchase-link-label {
    padding-right: calc(0.875rem + var(--space-1));
}

.overlap-source-purchase-links .purchase-link-icon {
    position: absolute;
    right: var(--space-3);
}

.overlap-unique-summary {
    grid-column: 2;
    grid-row: 1;
    align-self: start;
    display: grid;
    grid-template-rows: minmax(15rem, auto) minmax(0, 1fr);
    justify-self: start;
    width: 100%;
    max-width: none;
    min-height: 25.5rem;
    height: auto;
    gap: var(--space-3);
    min-width: 0;
}

.overlap-biggest-overlap {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    gap: var(--space-3);
    min-height: 15rem;
    padding: var(--space-4);
    overflow: visible;
    background: linear-gradient(
        135deg,
        color-mix(in srgb, var(--overlap-700) 58%, var(--primary-900)),
        color-mix(in srgb, var(--overlap-500) 34%, var(--primary-900))
    );
    border: var(--border-width) solid
        color-mix(in srgb, var(--overlap-400) 65%, var(--border-divider));
    border-radius: var(--border-radius);
}

.overlap-biggest-overlap h3 {
    margin: 0;
    color: var(--overlap-300);
    font-size: var(--font-sm);
    font-weight: var(--weight-bold);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.overlap-biggest-overlap-content {
    display: grid;
    grid-template-columns: 7rem minmax(0, 1fr);
    align-items: center;
    gap: var(--space-3);
    min-height: 0;
}

.overlap-biggest-overlap-cover {
    width: 7rem;
    max-height: 100%;
    aspect-ratio: 2 / 3;
    object-fit: cover;
    border: var(--border-width) solid var(--border-divider);
    border-radius: var(--border-radius);
}

.overlap-biggest-overlap-details {
    min-width: 0;
}

.overlap-biggest-overlap-details h4 {
    margin: 0;
    color: var(--text);
    font-size: var(--font-md);
    line-height: 1.2;
}

.overlap-biggest-overlap-percentage,
.overlap-biggest-overlap-shared {
    display: flex;
    align-items: baseline;
    gap: var(--space-1);
    margin: var(--space-2) 0 0;
}

.overlap-biggest-overlap-percentage strong {
    color: var(--overlap-300);
    font-size: var(--font-3xl);
    line-height: 1;
}

.overlap-biggest-overlap-percentage span {
    color: var(--text-muted);
    font-size: var(--font-xs);
    font-weight: var(--weight-semibold);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.overlap-biggest-overlap-shared strong {
    color: var(--overlap-300);
    font-size: var(--font-lg);
}

.overlap-biggest-overlap-shared span {
    color: var(--text);
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
}

.overlap-biggest-overlap-action {
    display: inline-flex;
    margin-top: var(--space-3);
    color: var(--primary-200);
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
    text-decoration: none;
}

.overlap-biggest-overlap-action:hover {
    color: var(--text);
    text-decoration: underline;
}

.overlap-biggest-overlap[hidden] + .overlap-unique-stat-grid {
    grid-row: 1 / -1;
}

.overlap-unique-stat-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
}

.overlap-unique-stat-card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 0;
    padding: var(--space-4);
    overflow: hidden;
    border: var(--border-width) solid var(--border-divider);
    border-radius: var(--border-radius);
}

.overlap-unique-stat-card--matches {
    background: linear-gradient(
        135deg,
        color-mix(in srgb, var(--overlap-700) 58%, var(--primary-900)),
        color-mix(in srgb, var(--overlap-500) 34%, var(--primary-900))
    );
    border-color: color-mix(in srgb, var(--overlap-400) 65%, var(--border-divider));
}

.overlap-unique-stat-card--issues {
    background: linear-gradient(
        135deg,
        color-mix(in srgb, var(--primary-800) 88%, var(--primary-900)),
        color-mix(in srgb, var(--primary-700) 50%, var(--primary-900))
    );
    border-color: color-mix(in srgb, var(--primary-300) 70%, var(--border-divider));
}

.overlap-unique-stat-label,
.overlap-unique-stat-count-label {
    margin: 0;
}

.overlap-unique-stat-card strong {
    align-self: start;
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: var(--weight-extrabold);
    line-height: 1;
}

.overlap-unique-stat-card--matches strong {
    margin-top: var(--space-1);
    color: var(--overlap-400);
}

.overlap-unique-stat-card--matches .overlap-unique-stat-label {
    color: var(--overlap-400);
}

.overlap-unique-stat-card--issues strong {
    margin-top: var(--space-1);
    color: var(--primary-200);
}

.overlap-unique-stat-label {
    padding-right: 2.25rem;
    color: var(--primary-200);
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.overlap-unique-stat-count-label {
    align-self: start;
    margin-top: var(--space-1);
    color: var(--text);
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
}

.overlap-unique-stat-action {
    display: inline-flex;
    align-items: center;
    width: 100%;
    margin-top: auto;
    padding: var(--space-1) 0 0;
    color: var(--primary-200);
    background: transparent;
    border: 0;
    border-top: var(--border-width) solid var(--border-divider);
    font: inherit;
    font-size: var(--font-xs);
    font-weight: var(--weight-semibold);
    justify-content: flex-end;
    text-align: right;
    cursor: pointer;
}

.overlap-exclusive-close {
    display: none;
}

.overlap-unique-stat-card--matches .overlap-unique-stat-action {
    color: var(--overlap-400);
}

.overlap-unique-stat-action[hidden],
.overlap-exclusive-close[hidden] {
    display: none;
}

.overlap-unique-stat-icon {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 2rem;
    height: 2rem;
    opacity: 0.65;
}

.overlap-unique-stat-icon--matches {
    background: var(--overlap-400);
    mask: url("icons/iconoir--book-stack.svg") center / contain no-repeat;
    -webkit-mask: url("icons/iconoir--book-stack.svg") center / contain no-repeat;
}

.overlap-unique-stat-icon--issues {
    background: var(--primary-300);
    mask: url("icons/gridicons--pages.svg") center / contain no-repeat;
    -webkit-mask: url("icons/gridicons--pages.svg") center / contain no-repeat;
}

.overlap-exclusive-toggle {
    align-self: end;
    justify-self: end;
    width: auto;
    margin: 0;
    padding: 0;
    color: var(--primary-200);
    background: transparent;
    border: 0;
    font: inherit;
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
    cursor: pointer;
}

.overlap-unique-stat-card--issues .overlap-exclusive-toggle {
    align-self: flex-start;
    display: inline-flex;
    width: 100%;
    margin-top: auto;
    padding: var(--space-1) 0 0;
    border-top: var(--border-width) solid var(--border-divider);
    font-size: var(--font-xs);
    justify-content: flex-end;
    text-align: right;
}

.overlap-unique-stat-card--issues .overlap-exclusive-toggle[hidden] {
    display: none;
}

.overlap-exclusive-toggle:hover {
    color: var(--text);
    text-decoration: underline;
}

.overlap-exclusive-toggle:focus-visible {
    outline: var(--border-width-med) solid var(--primary-300);
    outline-offset: var(--space-1);
    border-radius: var(--border-radius);
}

.overlap-exclusive-issues {
    --issue-result-colour: var(--primary-300);

    grid-column: 1 / -1;
    padding: var(--space-6);
    background: color-mix(in srgb, var(--primary-900) 55%, transparent);
    border: var(--border-width) solid var(--border-subtle);
    border-radius: var(--border-radius);
}

.overlap-exclusive-heading {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: var(--space-4);
    margin-bottom: var(--space-1);
    padding: var(--space-2) var(--space-3) var(--space-4);
    border-bottom: var(--border-width) solid var(--border-divider);
}

.overlap-exclusive-heading h3,
.overlap-exclusive-heading p {
    margin: 0;
}

.overlap-exclusive-heading h3 {
    color: var(--text);
    font-size: var(--font-xl);
    font-weight: var(--weight-extrabold);
    letter-spacing: -0.02em;
    line-height: 1.15;
}

.overlap-exclusive-heading p {
    color: var(--text-muted);
    font-size: var(--font-sm);
}

.overlap-matches-section {
    margin-top: var(--space-8);
}

.overlap-matches-list {
    display: grid;
    gap: var(--space-3);
    margin: 0;
    padding: 0;
    list-style: none;
}

.overlap-match-card {
    display: grid;
    grid-template-columns: 5rem minmax(12rem, 1fr) minmax(16rem, 0.8fr) max-content;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-8);
    color: inherit;
    text-decoration: none;
    transition:
        background-color 150ms ease,
        border-color 150ms ease;
}

.overlap-match-card:hover {
    background: var(--primary-700);
    border-color: var(--primary-500);
}

.overlap-match-card:focus-visible {
    outline: var(--border-width-med) solid var(--text);
    outline-offset: var(--space-1);
}

.overlap-match-cover {
    width: 5rem;
    aspect-ratio: 2 / 3;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.overlap-match-details {
    min-width: 0;
}

.overlap-match-name,
.overlap-match-total,
.overlap-match-overlap-heading,
.overlap-match-shared {
    margin: 0;
}

.overlap-match-name {
    font-family: var(--font-heading);
    font-size: var(--font-lg);
    font-weight: var(--weight-bold);
}

.overlap-match-total {
    margin-top: var(--space-1);
    color: var(--text-muted);
    font-size: var(--font-sm);
}

.overlap-match-statistics {
    display: grid;
    grid-template-columns: minmax(8rem, 1fr) auto;
    align-items: center;
    gap: var(--space-4);
}

.overlap-match-overlap-heading {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
}

.overlap-match-percentage,
.overlap-match-shared-count {
    color: var(--overlap-400);
    font-family: var(--font-heading);
    font-size: var(--font-2xl);
    font-weight: var(--weight-extrabold);
    line-height: 1;
}

.overlap-match-overlap-label,
.overlap-match-shared-label {
    color: var(--text-muted);
    font-size: var(--font-xs);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
}

.overlap-match-progress {
    display: block;
    height: 0.5rem;
    margin-top: var(--space-2);
    overflow: hidden;
    background: var(--border-subtle);
    border-radius: 999px;
}

.overlap-match-progress::before {
    display: block;
    width: var(--overlap-percentage);
    height: 100%;
    background: var(--overlap-400);
    content: "";
}

.overlap-match-shared {
    display: grid;
    gap: var(--space-1);
    text-align: center;
}

.overlap-match-action {
    padding-left: var(--space-4);
    color: var(--primary-200);
    border-left: var(--border-width) solid var(--border-subtle);
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
    white-space: nowrap;
}

.overlap-matches-loading {
    padding-block: var(--space-8);
    color: var(--text-muted);
    text-align: center;
}

@media (min-width: 48.0625rem) and (max-width: 80rem) {
    .overlap-source-purchase-options {
        margin-top: var(--space-3);
        transform: none;
    }

    .purchase-links.overlap-source-purchase-links {
        grid-template-columns: repeat(2, 6.75rem);
        width: auto;
        gap: var(--space-2);
        margin-top: var(--space-2);
    }

    .overlap-source-purchase-links .purchase-link:nth-child(n) {
        width: 100%;
        justify-self: stretch;
        font-size: var(--font-xs);
        white-space: nowrap;
    }

    .overlap-source-purchase-links .purchase-link:first-child {
        padding-inline: var(--space-3);
    }

    .overlap-source-purchase-links .purchase-link:nth-child(2),
    .overlap-source-purchase-links .purchase-link:nth-child(3) {
        padding-right: var(--space-3);
    }
}

@media (min-width: 41.0625rem) and (max-width: 68rem) {
    .overlap-source-details h2 {
        display: block;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .overlap-source-first-printing-list {
        padding-right: var(--space-16);
    }
}

@media (max-width: 68rem) {
    .overlap-source-title-block {
        min-height: 0;
    }

    .overlap-source-summary {
        grid-template-columns: 1fr;
        column-gap: 0;
        row-gap: var(--space-3);
        padding: var(--space-4);
    }

    .overlap-source-purchase-options {
        margin-top: var(--space-1);
        transform: none;
    }

    .purchase-links.overlap-source-purchase-links {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        width: 100%;
        gap: var(--space-3);
        margin-top: var(--space-2);
    }

    .overlap-source-purchase-links .purchase-link:nth-child(n) {
        width: 100%;
        justify-self: stretch;
    }

    .overlap-source-book {
        grid-column: 1;
        grid-row: auto;
        grid-template-columns: 9rem minmax(0, 1fr);
        grid-template-rows: auto;
        gap: var(--space-4);
        min-height: 0;
    }

    .overlap-source-cover {
        grid-row: 1;
        width: 9rem;
    }

    .overlap-source-primary,
    .overlap-unique-summary {
        grid-column: 1;
    }

    .overlap-source-primary {
        grid-row: 1;
    }

    .overlap-source-affiliate-disclosure {
        grid-column: 1;
        grid-row: 3;
        align-self: auto;
        margin: 0;
    }

    .overlap-unique-summary {
        grid-row: 2;
    }

    .overlap-source-details h2 {
        font-size: var(--font-lg);
    }

    .overlap-unique-summary {
        height: auto;
        min-height: 0;
        grid-template-rows: none;
        gap: var(--space-3);
    }

    .overlap-biggest-overlap {
        min-height: 0;
    }

    .overlap-biggest-overlap-content {
        align-items: start;
    }

    .overlap-biggest-overlap-cover {
        align-self: center;
    }

    .overlap-biggest-overlap-action {
        margin-top: var(--space-2);
    }

    .overlap-biggest-overlap-content {
        grid-template-columns: 6rem minmax(0, 1fr);
    }

    .overlap-biggest-overlap-cover {
        width: 6rem;
    }

    .overlap-exclusive-heading {
        align-items: start;
        flex-direction: column;
        gap: var(--space-1);
    }

    .overlap-match-card {
        grid-template-columns: 4rem minmax(0, 1fr);
        gap: var(--space-3);
        padding: var(--space-4);
    }

    .overlap-match-cover {
        width: 4rem;
    }

    .overlap-match-statistics,
    .overlap-match-action {
        grid-column: 1 / -1;
    }

    .overlap-match-action {
        padding: var(--space-3) 0 0;
        border-top: var(--border-width) solid var(--border-subtle);
        border-left: 0;
    }
}

@media (max-width: 41rem) {
    .overlap-source-title-block {
        min-height: 5.8125rem;
    }

    .overlap-source-first-printing {
        display: none;
    }

    .overlap-source-book {
        grid-template-columns: 10rem minmax(0, 1fr);
    }

    .overlap-source-cover {
        width: 10rem;
    }

    .overlap-biggest-overlap-content {
        grid-template-columns: 6rem minmax(0, 1fr);
    }

    .overlap-biggest-overlap-cover {
        width: 6rem;
    }

    .purchase-links.overlap-source-purchase-links {
        grid-template-columns: 1fr;
        width: 100%;
        gap: var(--space-1);
    }

    .overlap-unique-stat-card {
        aspect-ratio: auto;
        min-height: 0;
        padding: var(--space-3);
    }

    .overlap-unique-stat-card strong {
        margin-top: var(--space-2);
    }

    .overlap-unique-stat-count-label {
        margin-top: 0;
    }

    .overlap-unique-stat-action,
    .overlap-exclusive-close {
        display: inline-flex;
        align-items: center;
        width: fit-content;
        margin: var(--space-2) 0 0;
        padding: 0;
        color: var(--primary-200);
        background: transparent;
        border: 0;
        font: inherit;
        font-size: var(--font-xs);
        font-weight: var(--weight-semibold);
        cursor: pointer;
    }

    .overlap-unique-stat-card--matches .overlap-unique-stat-action {
        color: var(--overlap-400);
    }

    .overlap-unique-stat-action {
        width: 100%;
        justify-content: flex-end;
        margin-top: var(--space-1);
        padding-top: var(--space-1);
        border-top: var(--border-width) solid var(--border-divider);
    }

    .overlap-unique-stat-action:hover,
    .overlap-exclusive-close:hover {
        color: var(--text);
        text-decoration: underline;
    }

    .overlap-unique-stat-action:focus-visible,
    .overlap-exclusive-close:focus-visible {
        outline: var(--border-width-med) solid currentColor;
        outline-offset: var(--space-1);
        border-radius: var(--border-radius);
    }

}

/* =========================
   Homepage Featured Omnibuses: Responsive Layout
   ========================= */

/* Let the desktop cards compress before the compact layout takes over. */
@container (min-width: 54.0625rem) and (max-width: 72rem) {
    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-link {
        --featured-card-padding: clamp(var(--space-2), 0.8cqi, var(--space-3));
        --featured-section-gap: clamp(
            var(--space-1),
            calc(1.39cqi - 8px),
            var(--space-2)
        );
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-name {
        font-size: clamp(
            var(--font-xs),
            calc(6px + 0.7cqi),
            var(--font-sm)
        );
        line-height: 1.25;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-content,
    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-metadata {
        min-height: 0;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat.overlap-unique-stat-card {
        min-height: clamp(3rem, calc(24px + 2.78cqi), 3.5rem);
        height: clamp(3rem, calc(24px + 2.78cqi), 3.5rem);
        padding-inline: var(--space-1);
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat-body {
        gap: var(--space-1);
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat.overlap-unique-stat-card strong {
        font-size: clamp(1.375rem, calc(10px + 1.39cqi), 1.625rem);
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat-relationship {
        font-size: clamp(0.5625rem, calc(6px + 0.35cqi), 0.625rem);
        line-height: 1.05;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-action {
        min-height: 0;
        padding-inline: 0;
        font-size: clamp(0.5625rem, 1.04cqi, var(--font-xs));
        line-height: 1.1;
    }
}

/* Override the desktop card rules at the same container transition used by the list. */
@container (max-width: 54rem) {
    .featured-omnibuses-list {
        grid-template-columns: 1fr;
        gap: var(--space-2);
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-link {
        position: relative;
        grid-template-columns: 4rem minmax(0, 1fr) var(--font-xl);
        grid-template-rows: auto minmax(0, 1fr);
        column-gap: var(--space-3);
        row-gap: var(--space-1);
        min-height: 0;
        padding: var(--space-2) var(--space-3);
        border-color: var(--border-subtle);
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-cover {
        grid-column: 1;
        grid-row: 1 / span 2;
        width: 4rem;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-details {
        display: contents;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-content {
        display: grid;
        grid-column: 2;
        grid-row: 1;
        align-content: start;
        gap: var(--space-1);
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-name {
        display: -webkit-box;
        overflow: hidden;
        color: var(--text);
        font-size: var(--font-sm);
        line-height: 1.35;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-relationship {
        font-size: var(--font-xs);
        line-height: 1.35;
        margin-top: 0;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-metadata {
        display: contents;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stats {
        display: flex;
        grid-column: 2;
        grid-row: 2;
        align-self: end;
        align-items: baseline;
        gap: var(--space-1);
        margin-top: 0;
        position: static;
        top: auto;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat.overlap-unique-stat-card {
        display: flex;
        min-height: 0;
        padding: 0;
        overflow: visible;
        background: transparent;
        border: 0;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat-header {
        display: none;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat-body {
        display: flex;
        align-items: baseline;
        gap: var(--space-1);
        padding: 0;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat.overlap-unique-stat-card strong {
        display: none;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat-relationship {
        display: none;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stats::after {
        display: none;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-stat-compact-summary {
        display: inline;
        color: var(--overlap-400);
        font-size: var(--font-xs);
        font-weight: var(--weight-semibold);
        line-height: 1;
        white-space: nowrap;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-action {
        display: grid;
        position: absolute;
        inset-block-start: 50%;
        inset-inline-end: var(--space-2);
        inline-size: var(--font-xl);
        block-size: var(--font-xl);
        transform: translateY(-50%);
        place-items: center;
        margin-top: 0;
        min-height: 0;
        padding: 0;
        color: var(--primary-200);
        background: transparent;
        border: 0;
        box-shadow: none;
        font-size: 0;
    }

    .featured-omnibus-result-row--primary .featured-omnibus-result-action::after {
        color: var(--primary-100);
        content: "\203A";
        font-size: var(--font-xl);
        line-height: 1;
    }

    /* Keep the secondary featured cards in the same compact row treatment. */
    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-link {
        position: relative;
        grid-template-columns: 4rem minmax(0, 1fr) var(--font-xl);
        grid-template-rows: auto minmax(0, 1fr);
        column-gap: var(--space-3);
        row-gap: var(--space-1);
        min-height: 0;
        padding: var(--space-2) var(--space-3);
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-cover {
        grid-column: 1;
        grid-row: 1 / span 2;
        width: 4rem;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-content {
        display: grid;
        align-self: start;
        grid-column: 2;
        grid-row: 1;
        align-content: start;
        justify-items: start;
        gap: var(--space-1);
        text-align: start;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-name {
        display: -webkit-box;
        overflow: hidden;
        color: var(--text);
        font-size: var(--font-sm);
        line-height: 1.35;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-relationship {
        display: block;
        font-size: var(--font-xs);
        line-height: 1.35;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-metadata {
        display: contents;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stats {
        display: flex;
        grid-column: 2;
        grid-row: 2;
        align-self: end;
        align-items: baseline;
        gap: var(--space-1);
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat.overlap-unique-stat-card {
        display: flex;
        height: auto;
        min-height: 0;
        padding: 0;
        overflow: visible;
        background: transparent;
        border: 0;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat-header {
        display: none;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat-body {
        display: flex;
        align-items: baseline;
        gap: var(--space-1);
        padding: 0;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat.overlap-unique-stat-card strong {
        display: none;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat-relationship {
        display: none;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stats::after {
        display: none;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-stat-compact-summary {
        display: inline;
        color: var(--overlap-400);
        font-size: var(--font-xs);
        font-weight: var(--weight-semibold);
        line-height: 1;
        white-space: nowrap;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-action {
        display: grid;
        position: absolute;
        inset-block-start: 50%;
        inset-inline-end: var(--space-2);
        inline-size: var(--font-xl);
        block-size: var(--font-xl);
        transform: translateY(-50%);
        place-items: center;
        min-height: 0;
        padding: 0;
        color: var(--primary-200);
        background: transparent;
        border: 0;
        box-shadow: none;
        font-size: 0;
    }

    .featured-omnibus-result-row:not(.featured-omnibus-result-row--primary) .featured-omnibus-result-action::after {
        color: var(--primary-100);
        content: "\203A";
        font-size: var(--font-xl);
        line-height: 1;
    }

    /* Shared recent-history rows */
    /* Use one container-driven compact layout for both recent-result lists. */
    .recent-comparison-link {
        --compact-cover-width: 2rem;
        --compact-cover-height: 3rem;
        grid-template-columns: auto minmax(0, 1fr) auto;
        grid-template-rows: auto auto;
        column-gap: var(--space-3);
        row-gap: var(--space-1);
        min-height: 5rem;
        padding: var(--space-2) var(--space-3);
    }

    .recent-comparison-link .recent-comparison-covers {
        display: grid;
        grid-column: 1;
        grid-row: 1 / span 2;
        grid-template-columns: repeat(2, var(--compact-cover-width));
        gap: var(--space-1);
    }

    .recent-comparison-link .recent-overlap-search-covers {
        grid-template-columns: var(--compact-cover-width);
    }

    .recent-comparison-link .recent-comparison-cover {
        width: var(--compact-cover-width);
        height: var(--compact-cover-height);
    }

    .recent-comparison-link .recent-comparison-title {
        display: -webkit-box;
        grid-column: 2;
        grid-row: 1;
        max-inline-size: none;
        overflow: hidden;
        font-size: var(--font-sm);
        line-height: 1.35;
        white-space: normal;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }

    .recent-comparison-link .recent-comparison-title-name {
        overflow: visible;
        text-overflow: clip;
    }

    .recent-comparison-link .recent-comparison-metadata {
        display: flex;
        grid-column: 2;
        grid-row: 2;
        align-items: center;
        gap: 0;
        min-width: 0;
    }

    .recent-comparison-link .recent-comparison-date::after {
        content: "\00B7";
        margin-inline: var(--space-2);
        color: var(--grey-400);
    }

    .recent-comparison-link .recent-comparison-overlap {
        grid-column: auto;
        margin-left: 0;
        padding: 0;
        color: var(--overlap-400);
        background: transparent;
        border: 0;
        border-radius: 0;
        text-align: left;
    }

    .recent-comparison-link .recent-comparison-action {
        display: grid;
        grid-column: 3;
        grid-row: 1 / span 2;
        place-items: center;
        margin-left: 0;
        font-size: 0;
    }

    .recent-comparison-link .recent-comparison-action::after {
        color: var(--primary-200);
        content: "\203A";
        font-size: var(--font-xl);
        line-height: 1;
    }

}

/* Overlap results: narrow layouts */
@media (max-width: 30rem) {

    .overlap-biggest-overlap-content {
        grid-template-columns: 6.5rem minmax(0, 1fr);
        align-items: stretch;
    }

    .overlap-biggest-overlap-cover {
        align-self: stretch;
        width: 100%;
        height: 100%;
        min-height: 0;
        max-height: none;
        aspect-ratio: auto;
        object-fit: cover;
    }

    .overlap-source-purchase-options {
        margin-top: auto;
        padding-top: var(--space-1);
    }

    .purchase-links.overlap-source-purchase-links {
        grid-template-columns: minmax(0, 1fr);
        margin-top: 0.375rem;
    }

    .overlap-source-purchase-links .purchase-link:nth-child(n) {
        min-width: 0;
        min-height: 1.875rem;
        padding: var(--space-1) var(--space-2);
        font-size: 0.6875rem;
    }

    .overlap-source-purchase-links .purchase-link-label {
        padding-right: var(--space-4);
    }

    .overlap-source-purchase-links .purchase-link-icon {
        right: var(--space-1);
        width: 0.75rem;
        height: 0.75rem;
    }

    .overlap-unique-stat-card {
        min-height: 0;
        padding: var(--space-2);
    }

    .overlap-unique-stat-icon {
        top: var(--space-2);
        right: var(--space-2);
        width: 1.5rem;
        height: 1.5rem;
    }

    .overlap-unique-stat-label {
        padding-right: 1.75rem;
        font-size: var(--font-xs);
    }

    .overlap-unique-stat-card strong {
        font-size: 2.75rem;
    }

    .overlap-unique-stat-count-label {
        font-size: var(--font-xs);
    }

}

@media (max-width: 24rem) {
    .overlap-results-page {
        padding-inline: var(--space-4);
    }

    .overlap-source-summary {
        padding-inline: var(--space-2);
    }

    .overlap-source-book {
        column-gap: var(--space-2);
    }

    .overlap-source-details .omnibus-total {
        padding-inline: var(--space-2);
    }
}

/* =========================
   Comparison Results
   ========================= */

.comparison-summary-books {
    position: relative;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: stretch;
    gap: var(--space-1);
    height: var(--comparison-summary-height);
}

.comparison-book {
    display: grid;
    align-items: center;
    column-gap: var(--space-6);
    row-gap: var(--space-1);
    grid-template-rows: auto auto 1fr;
    min-height: 0;
    padding: var(--space-6) var(--space-8) 0;
    overflow: visible;
}

.comparison-book--a {
    --purchase-colour: var(--primary-300);
    grid-template-columns: 10rem minmax(0, 1fr) 6rem;
}

.comparison-book--b {
    --purchase-colour: var(--accent-400);
    grid-template-columns: 6rem minmax(0, 1fr) 10rem;
}

.comparison-book-cover {
    align-self: start;
    width: 100%;
    aspect-ratio: 2 / 3;
    object-fit: cover;
    border-radius: var(--border-radius);
    border: none;
}

.comparison-book-cover--loading {
    visibility: hidden;
}

.comparison-book > h2,
.comparison-book-total {
    grid-column: 2;
    min-width: 0;
}

.comparison-book > h2 {
    grid-row: 1;
    align-self: start;
    display: -webkit-box;
    min-height: 4.05em;
    overflow: hidden;

    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
        max-inline-size: calc(100% - var(--space-4));

    font-size: var(--font-lg);
    line-height: 1.35;
}

.comparison-book--a > h2 {
    justify-self: start;
}

.comparison-book--b > h2 {
    justify-self: end;
}

.comparison-book-purchase-options {
    position: relative;
    z-index: 2;
    grid-column: 2;
    grid-row: 3;
    align-self: end;
}

.comparison-book-purchase-options .purchase-link {
    gap: 3px;
    padding-inline: 0.625rem;
}

.comparison-book-purchase-options .purchase-heading sup {
    color: var(--text-muted);
}

.comparison-book--a .comparison-book-cover {
    grid-column: 1;
    grid-row: 1 / -1;
}

.comparison-book--b .comparison-book-cover {
    grid-column: 3;
    grid-row: 1 / -1;
}

.comparison-book--b > h2,
.comparison-book--b .comparison-book-total,
.comparison-book--b .comparison-book-purchase-options {
    text-align: right;
}

.comparison-book--a .comparison-book-total {
    margin-left: 0;
    margin-right: auto;
}

.comparison-book--b .comparison-book-total {
    margin-left: auto;
    margin-right: 0;
}

.comparison-book--b .comparison-book-purchase-options .purchase-links {
    justify-content: end;
}

.comparison-book--b .comparison-book-purchase-options .purchase-link:first-child {
    grid-column: 2;
}

/* Shared result metadata */
.omnibus-total {
    grid-row: 2;
    align-self: start;
    display: flex;
    align-items: center;
    width: fit-content;
    margin-top: var(--space-1);
    padding: var(--space-2) var(--space-3);

    color: var(--text-muted);
    background: var(--primary-900);
    border: none;
    border-radius: var(--border-radius);

    box-shadow: var(--shadow-inset-highlight), var(--shadow-sm);

    font-size: var(--font-xs);
    font-weight: var(--weight-semibold);
}

.omnibus-total-label {
    margin-left: var(--space-1);
}

/* Shared issue-count tooltip */
.info-tooltip {
    position: relative;
    z-index: 3;
    display: inline-block;
    width: 1.125rem;
    height: 1.125rem;
    margin-left: 0.375rem;
}

.info-tooltip-button {
    position: absolute;
    top: 50%;
    left: 50%;
    display: grid;
    place-items: center;
    width: 1.5rem;
    height: 1.5rem;
    padding: 0;
    color: var(--primary-200);
    background: none;
    border: 0;
    border-radius: 50%;
    cursor: help;
    transform: translate(-50%, -50%);
}

.info-tooltip-button:focus-visible {
    outline: var(--border-width-med) solid currentColor;
    outline-offset: var(--space-1);
}

.info-tooltip-icon {
    width: 1.125rem;
    height: 1.125rem;
}

.issue-counts-note-icon,
.info-tooltip-icon {
    background: currentColor;
    -webkit-mask: url("icons/fe--info.svg") center / contain no-repeat;
    mask: url("icons/fe--info.svg") center / contain no-repeat;
}

.info-tooltip-content {
    position: absolute;
    z-index: 2;
    display: none;
    top: calc(100% + var(--space-2));
    left: 0;
    width: min(18rem, var(--tooltip-max-width, calc(100vw - var(--space-8))));
    padding: var(--space-3);
    color: var(--text);
    background: var(--primary-800);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    font-size: var(--font-sm);
    font-weight: var(--weight-normal);
    line-height: 1.4;
    text-align: left;
    transform: translateX(var(--tooltip-offset-x, 0px));
}

.info-tooltip--end .info-tooltip-content {
    right: 0;
    left: auto;
}

.info-tooltip-button[aria-expanded="true"] + .info-tooltip-content {
    display: block;
}

/* Comparison results: Venn summary */
.overlap-summary {
    position: absolute;
    z-index: 1;
    top: 54%;
    left: 50%;
    height: 88%;
    width: auto;
    aspect-ratio: 360 / 250;
    transform: translate(-50%, -50%);
}

.venn-diagram {
    position: relative;
    width: 100%;
    height: 100%;
}

.venn-shapes {
    display: block;
    width: 100%;
    height: 100%;
    overflow: visible;
}

.venn-fill--a {
    fill: var(--primary-600);
}

.venn-fill--b {
    fill: var(--accent-700);
}

.venn-fill--overlap {
    fill: var(--overlap-600);
}

.venn-outline {
    fill: none;
    stroke-width: var(--border-width-med);
}

.venn-outline--a {
    stroke: var(--primary-300);
}

.venn-outline--b {
    stroke: var(--accent-400);
}

.venn-overlap-outline {
    fill: none;
    stroke: var(--overlap-400);
    stroke-width: var(--border-width-med);
    filter: drop-shadow(
        0 0 0.35rem
        color-mix(in srgb, var(--overlap-400) 55%, transparent)
    );
}

.venn-value {
    position: absolute;
    z-index: 1;
    top: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.venn-value--a {
    left: 17.5%;
    color: var(--primary-200);
}

.venn-value--overlap {
    left: 50%;
    color: var(--text);
}

.venn-value--b {
    left: 82.5%;
    color: var(--accent-200);
}

.venn-value strong {
    display: block;
    font-size: var(--font-2xl);
    line-height: 1;
}

.venn-value span {
    display: block;
    margin-top: var(--space-1);
    color: var(--text);
    font-size: var(--font-xs);
}


/* Shared purchase links */
.purchase-heading {
    color: var(--text-muted);
    font-size: var(--font-xs);
}

.purchase-heading sup {
    margin-left: var(--space-1);
    color: var(--purchase-colour);
    font-size: inherit;
}

/* Comparison results: affiliate disclosure */
.comparison-affiliate-disclosure {
    margin: var(--space-12) 0 0;

    color: color-mix(
        in srgb,
        var(--text-muted) 85%,
        var(--primary-900)
    );
    font-size: var(--font-xs);
    font-style: italic;
    text-align: center;
}

/* Shared purchase-link controls */
.purchase-links {
    display: grid;
    grid-template-columns: repeat(2, max-content);
    justify-content: start;
    gap: var(--space-1);
    margin-top: var(--space-2);
}

.purchase-link:first-child {
    grid-column: 1;
    grid-row: 1;
    justify-self: stretch;
    justify-content: center;
}

.purchase-link:nth-child(2) {
    grid-column: 1;
    grid-row: 2;
}

.purchase-link:nth-child(3) {
    grid-column: 2;
    grid-row: 2;
}

.purchase-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-2);

    color: var(--purchase-colour);
    background: color-mix(
        in srgb,
        var(--purchase-colour) 10%,
        var(--primary-900)
    );
    border: var(--border-width) solid
        color-mix(in srgb, var(--purchase-colour) 55%, transparent);
    border-radius: var(--border-radius);

    font-size: var(--font-xs);
    font-weight: var(--weight-semibold);
    text-decoration: none;

    transition:
        background-color 150ms ease;
}

.purchase-link-icon {
    width: 0.875rem;
    height: 0.875rem;
    flex: 0 0 auto;
    background: currentColor;

    mask: url("icons/akar-icons--link-out.svg") center / contain no-repeat;
    -webkit-mask: url("icons/akar-icons--link-out.svg") center / contain no-repeat;
}

.purchase-link:hover {
    background: color-mix(
        in srgb,
        var(--purchase-colour) 20%,
        var(--primary-900)
    );
}

.purchase-link:focus-visible {
    outline: var(--border-width-med) solid var(--text);
    outline-offset: var(--space-1);
}

@media (max-width: 74rem) {
    .comparison-state {
        min-height: 14rem;
    }

    .comparison-summary {
        --comparison-summary-height: auto;

        padding: var(--space-6) var(--space-4);
    }

    .comparison-book {
        display: contents;
    }

    .comparison-book > h2 {
        grid-row: 1;
        justify-self: center;
        width: min(100%, clamp(9rem, 28vw, 12rem));
        text-align: center;
    }

    .comparison-book--a .comparison-book-cover,
    .comparison-book--b .comparison-book-cover {
        grid-row: 2;
        justify-self: center;
        width: 12rem;
    }

    .comparison-book--a .comparison-book-total,
    .comparison-book--b .comparison-book-total {
        grid-row: 3;
        justify-self: center;
        margin: 0;
        padding: 0;
        background: transparent;
        box-shadow: none;
        text-align: center;
    }

    .comparison-book-purchase-options,
    .comparison-book--b .comparison-book-purchase-options {
        grid-row: 4;
        align-self: start;
        justify-self: center;
        width: min(100%, clamp(9rem, 28vw, 12rem));
        margin-top: var(--space-3);
        text-align: center;
    }

    .overlap-summary {
        position: relative;
        top: auto;
        left: auto;
        height: auto;
        transform: none;
    }

    .purchase-links,
    .comparison-book--b .comparison-book-purchase-options .purchase-links {
        display: grid;
        grid-template-columns: 1fr;
        justify-content: stretch;
        margin-top: var(--space-2);
    }

    .purchase-link {
        justify-self: center;
        width: min(100%, clamp(9rem, 28vw, 12rem));
        justify-content: center;
        font-size: var(--font-sm);
    }

    .purchase-link:first-child,
    .purchase-link:nth-child(2),
    .purchase-link:nth-child(3),
    .comparison-book--b .comparison-book-purchase-options .purchase-link:first-child {
        grid-column: auto;
        grid-row: auto;
        justify-self: center;
    }

    .comparison-affiliate-disclosure {
        margin-top: var(--space-6);
        line-height: 1.5;
    }

    /* Intermediate layout: book A, shared-issues diagram, book B. */
    .comparison-summary-books {
        height: auto;
        grid-template-columns: minmax(0, 1fr) minmax(18rem, 22rem) minmax(0, 1fr);
        grid-template-rows: auto auto auto auto;
        column-gap: var(--space-6);
        row-gap: var(--space-2);
    }

    .comparison-book--a > h2,
    .comparison-book--a .comparison-book-cover,
    .comparison-book--a .comparison-book-total,
    .comparison-book--a .comparison-book-purchase-options {
        grid-column: 1;
    }

    .comparison-book--b > h2,
    .comparison-book--b .comparison-book-cover,
    .comparison-book--b .comparison-book-total,
    .comparison-book--b .comparison-book-purchase-options {
        grid-column: 3;
    }

    .comparison-summary-books::before {
        display: none;
    }

    .overlap-summary {
        grid-column: 2;
        grid-row: 1 / 4;
        align-self: center;
        width: 100%;
        margin: 0;
    }

}

/* Switch the summary and issue breakdown together before the filters wrap. */
@media (max-width: 64rem) {
    .comparison-summary-books {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        grid-template-rows: auto auto auto auto auto;
        column-gap: 0;
        row-gap: var(--space-2);
    }

    .comparison-book--a .comparison-book-cover,
    .comparison-book--b .comparison-book-cover {
        width: min(100%, clamp(9rem, 28vw, 12rem));
    }

    .comparison-book--b > h2,
    .comparison-book--b .comparison-book-cover,
    .comparison-book--b .comparison-book-total,
    .comparison-book--b .comparison-book-purchase-options {
        grid-column: 2;
    }

    .comparison-summary-books::before {
        display: block;
        grid-column: 2;
        grid-row: 1 / 4;
        align-self: stretch;
        justify-self: start;
        z-index: 1;
        width: 0;
        border-left: var(--border-width) solid var(--border-subtle);
        content: "";
        pointer-events: none;
    }

    .overlap-summary {
        grid-column: 1 / -1;
        grid-row: 4;
        width: min(100%, 22rem);
        margin: var(--space-4) auto var(--space-2);
    }

    .comparison-book-purchase-options,
    .comparison-book--b .comparison-book-purchase-options {
        grid-row: 5;
    }
}

/* =========================
   Issue Results
   ========================= */

/* Comparison results: panel, filters, and view controls */
.results-section {
    margin-top: var(--space-6);
    padding-top: var(--space-3);
}

.comparison-results-panel {
    --issue-result-colour: var(--issue-all);

    margin-top: 0;
    padding: var(--space-3) var(--space-8);
}

.comparison-results-panel[data-filter="overlap"],
.issue-number-tag[data-comparison-group="overlap"] {
    --issue-result-colour: var(--overlap-400);
}

.comparison-results-panel[data-filter="unique-a"],
.issue-number-tag[data-comparison-group="unique-a"] {
    --issue-result-colour: var(--primary-300);
}

.comparison-results-panel[data-filter="unique-b"],
.issue-number-tag[data-comparison-group="unique-b"] {
    --issue-result-colour: var(--accent-400);
}

.comparison-results-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin: 0 0 var(--space-4);
    padding-inline: var(--space-4);
}

.issue-results-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
    margin-bottom: var(--space-1);
    border-bottom: var(--border-width) solid var(--border-subtle);
}

.contents-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
    margin: 0;
}

.contents-filters-scroll-hint {
    min-width: 0;
}

.issue-results-details {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-left: auto;
}

.issue-results-summary {
    flex: 0 0 auto;
    margin: 0;
    text-align: right;
}

.issue-results-summary-title {
    color: var(--text-muted);
    font-size: var(--font-sm);
    font-weight: var(--weight-normal);
}

.issue-results-summary-count {
    color: color-mix(
        in srgb,
        var(--issue-result-colour) 72%,
        var(--text)
    );
    font-weight: var(--weight-bold);
}

.issue-results-summary-separator,
.issue-results-summary-series {
    color: var(--text-muted);
}

.contents-filter {
    --filter-colour: var(--text-muted);

    position: relative;
    width: auto;
    min-height: 0;
    padding: var(--space-3) var(--space-6);

    color: var(--text-muted);
    background: transparent;
    border: none;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    box-shadow: none;

    font-family: var(--font-heading);
    font-size: var(--font-base);
    font-weight: var(--weight-semibold);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    cursor: pointer;

    transition:
        color 150ms ease,
        background 150ms ease;
}

.contents-filter::after {
    position: absolute;
    right: var(--space-2);
    bottom: calc(-1 * var(--border-width));
    left: var(--space-2);

    height: var(--border-width-med);
    background: var(--filter-colour);
    content: "";
    transform: scaleX(0);
    transition: transform 150ms ease;
}

.contents-filter:not(.is-selected):hover {
    color: var(--text);
    background: color-mix(
        in srgb,
        var(--primary-700) 55%,
        transparent
    );
}

.contents-filter.is-selected {
    color: color-mix(
        in srgb,
        var(--filter-colour) 70%,
        var(--text)
    );
    background: linear-gradient(
        180deg,
        color-mix(in srgb, var(--filter-colour) 12%, transparent),
        transparent 80%
    );
    box-shadow: none;
}

.contents-filter.is-selected::after {
    transform: scaleX(1);
}

.contents-filter:focus-visible {
    outline: var(--border-width-med) solid var(--text);
    outline-offset: calc(-1 * var(--border-width));
}

.contents-filter-count {
    margin-left: var(--space-1);
    font-weight: var(--weight-bold);
}

.contents-filter--all {
    --filter-colour: var(--filter-all);
}

.contents-filter--all.is-selected {
    --filter-colour: var(--filter-all-selected);
}

.contents-filter--overlap {
    --filter-colour: var(--overlap-400);
}

.contents-filter--a {
    --filter-colour: var(--primary-300);
}

.contents-filter--b {
    --filter-colour: var(--accent-400);
}

.issue-display-controls {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-left: auto;
}

.partial-issue-legend {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-muted);
    font-size: var(--font-sm);
}

.partial-issue-swatch {
    flex: none;
}

.comparison-results-panel[data-filter="all"] .partial-issue-swatch {
    --issue-result-colour: var(--filter-all-selected);
}

.partial-issue-legend-compact {
    display: none;
}

.overlap-exclusive-issues > .partial-issue-legend {
    margin: var(--space-3);
}

.overlap-exclusive-issues .partial-issue-swatch {
    --issue-result-colour: var(--primary-300);
}

.issue-view-toggle {
    display: inline-flex;
    overflow: hidden;
    margin-left: auto;

    border: var(--border-width) solid var(--border-default);
    border-radius: var(--border-radius);
}

.issue-view-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    width: 6.5rem;
    min-height: 2.25rem;
    padding: var(--space-2) var(--space-3);

    color: var(--text-muted);
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    transition:
        color 150ms ease,
        background-color 150ms ease,
        box-shadow 150ms ease;
}

.issue-view-button + .issue-view-button {
    border-left: var(--border-width) solid var(--border-default);
}

.issue-view-button:hover {
    color: var(--text);
    background: var(--primary-800);
}

.issue-view-button.is-selected {
    color: var(--primary-200);
    background: var(--primary-700);
    box-shadow: var(--shadow-inset-highlight);
}

.issue-view-button:focus-visible {
    outline: var(--border-width-med) solid var(--primary-300);
    outline-offset: var(--space-1);
}

.issue-view-icon {
    width: 1rem;
    aspect-ratio: 1;
    flex: 0 0 auto;

    background: currentColor;

    mask-position: center;
    mask-repeat: no-repeat;
    mask-size: contain;

    -webkit-mask-position: center;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-size: contain;
}

.issue-view-icon--grouped {
    mask-image: url("icons/list-tree.svg");
    -webkit-mask-image: url("icons/list-tree.svg");
}

.issue-view-icon--list {
    mask-image: url("icons/list.svg");
    -webkit-mask-image: url("icons/list.svg");
}

.issue-view-label {
    display: inline-flex;
    align-items: center;
    min-height: 1rem;
    line-height: 1;
    font-size: var(--font-xs);
    font-weight: var(--weight-normal);
}

/* Shared grouped issue results */
.issue-results {
    margin: 0;
    padding: 0;
}

.issue-series-list {
    display: grid;
    grid-template-columns: 1fr;
}

.issue-series-list-header,
.issue-series-group {
    display: grid;
    grid-template-columns: 14rem minmax(0, 1fr);
    column-gap: var(--space-6);
}

.issue-series-list-header,
.issue-flat-list-header {
    padding: var(--space-3);
    color: var(--text-muted);
    font-size: var(--font-xs);
    font-weight: var(--weight-bold);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

/* Comparison results: flat issue view */
.issue-flat-list {
    margin: 0;
    padding: 0;
}

.issue-flat-list-header,
.issue-flat-row {
    display: grid;
    grid-template-columns: 3.25rem 14rem minmax(0, 1fr);
    column-gap: var(--space-3);
}

.issue-flat-list-rows {
    margin: 0;
    padding: 0;
    list-style: none;
    border-top: var(--border-width) solid var(--border-subtle);
}

.issue-flat-row {
    align-items: center;
    min-height: 0;
    padding: var(--space-2) var(--space-3);

    font-size: var(--font-sm);
    transition: background-color 150ms ease;
}

.issue-flat-row + .issue-flat-row {
    border-top: var(--border-width) solid var(--border-subtle);
}

.issue-flat-row + .issue-flat-row--series-start {
    border-top: var(--border-width-med) solid color-mix(
        in srgb,
        var(--border-default) 65%,
        var(--border-subtle)
    );
}

.issue-flat-row:hover,
.issue-series-group:hover {
    background: color-mix(in srgb, var(--primary-700) 35%, transparent);
}

.issue-flat-series {
    grid-column: 2;
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--space-1);
    min-width: 0;
}

.issue-flat-series-name {
    color: var(--text);
    font-weight: var(--weight-semibold);
}

.issue-flat-series-year {
    color: var(--text-muted);
    font-size: var(--font-sm);
}

.issue-flat-qualifier {
    grid-column: 3;
    grid-row: 1;
    min-width: 0;
    color: var(--text-muted);
    font-size: var(--font-xs);
    overflow-wrap: anywhere;
}

.issue-number-tag.issue-flat-number {
    grid-column: 1;
    justify-self: start;
    min-width: 3.25rem;
    padding: 0;
    color: color-mix(
        in srgb,
        var(--issue-result-colour) 72%,
        var(--text)
    );
    background: transparent;
    border: 0;
    border-radius: 0;
    font-variant-numeric: tabular-nums;
    font-weight: var(--weight-bold);
}

/* Shared grouped issue rows */
.issue-series-group {
    align-items: start;
    padding: var(--space-4) var(--space-3);
    border-top: var(--border-width) solid var(--border-subtle);
    transition: background-color 150ms ease;
}

.issue-series-header {
    grid-column: 1;
}

.issue-series-heading {
    min-width: 0;
}

.issue-series-name {
    margin: 0;
    min-width: 0;
    color: var(--text);
    font-size: var(--font-md);
    font-weight: var(--weight-bold);
}

.issue-series-metadata {
    display: flex;
    align-items: baseline;
    gap: var(--space-1);
    margin-top: var(--space-1);
    color: var(--text-muted);
    font-size: var(--font-sm);
    font-weight: var(--weight-normal);
}

.issue-series-count {
    display: inline-flex;
    align-items: baseline;
    gap: var(--space-1);

    color: color-mix(
        in srgb,
        var(--issue-result-colour) 65%,
        var(--text-muted)
    );
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
}

.issue-series-count-number {
    color: color-mix(
        in srgb,
        var(--issue-result-colour) 70%,
        var(--text)
    );
}

.issue-number-list {
    grid-column: 2;
    grid-row: 1;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin: 0;
    padding: 0;
    list-style: none;
}

.issue-number-tag {
    padding: var(--space-1) var(--space-3);
    color: color-mix(
        in srgb,
        var(--issue-result-colour) 65%,
        var(--text)
    );
    background: color-mix(
        in srgb,
        var(--issue-result-colour) 12%,
        var(--primary-850)
    );
    border: var(--border-width) solid
        color-mix(
            in srgb,
            var(--issue-result-colour) 40%,
            var(--border-subtle)
        );
    border-radius: var(--border-radius);
    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
}

.issue-number-tag.issue-number-tag--partial {
    position: relative;
    overflow: hidden;
}

.issue-number-tag--partial::after {
    content: "";
    position: absolute;
    box-sizing: border-box;
    top: 0;
    right: 0;
    width: var(--partial-corner-size, 0.625rem);
    height: var(--partial-corner-size, 0.625rem);
    border-top: var(--partial-corner-size, 0.625rem) solid var(--issue-result-colour);
    clip-path: polygon(0 0, 100% 0, 100% 100%);
    pointer-events: none;
}

.issue-number-tag.issue-flat-number.issue-number-tag--partial {
    --partial-corner-size: 0.375rem;

    padding-inline: var(--space-1);
    border-radius: var(--border-radius);
}

.issue-partial-label {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
}

.issue-results-empty {
    margin: 0;
    padding: var(--space-4);
    color: var(--text-muted);
    background: var(--primary-850);
    border: var(--border-width) solid var(--border-subtle);
    border-radius: var(--border-radius);
    text-align: center;
}

@media (max-width: 64rem) {
    .comparison-results-heading p {
        display: none;
    }

    .issue-display-controls,
    .issue-view-toggle {
        margin-left: 0;
    }

    .issue-view-button {
        width: 5.5rem;
        min-height: 2rem;
        padding: var(--space-1) var(--space-2);
    }

    .comparison-results-panel {
        padding: var(--space-4);
    }

    .issue-results-toolbar {
        display: grid;
        gap: var(--space-2);
        padding-bottom: var(--space-3);
    }

    .contents-filters-scroll-hint {
        position: relative;
        min-width: 0;
        margin-inline: var(--space-3);
    }

    .contents-filters-scroll-hint::after {
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        display: grid;
        width: var(--space-8);
        place-items: center end;
        padding-right: var(--space-1);
        color: var(--primary-300);
        background: linear-gradient(
            90deg,
            transparent,
            color-mix(in srgb, var(--primary-850) 92%, transparent) 55%
        );
        content: "›";
        font-size: var(--font-xl);
        line-height: 1;
        opacity: 0;
        pointer-events: none;
        transition: opacity 150ms ease;
    }

    .contents-filters-scroll-hint.has-overflow:not(.is-at-end)::after {
        opacity: 1;
    }

    .contents-filters {
        display: flex;
        flex-wrap: nowrap;
        gap: var(--space-2);
        width: 100%;
        margin-inline: 0;
        overflow-x: auto;
        overscroll-behavior-x: contain;
        scrollbar-width: none;
    }

    .contents-filters::-webkit-scrollbar {
        display: none;
    }

    .contents-filter {
        flex: 0 0 auto;
        padding: var(--space-3);
        font-size: var(--font-sm);
        white-space: nowrap;
    }

    .issue-results-details {
        justify-content: space-between;
        gap: var(--space-2);
        min-width: 0;
        margin-inline: var(--space-3);
    }

    .issue-results-summary {
        order: 1;
        flex: 1 1 auto;
        min-width: 0;
        text-align: left;
    }

    .issue-results-details .issue-results-summary-title {
        font-size: var(--font-xs);
    }

    .issue-results-details .partial-issue-legend {
        order: 2;
        flex: none;
    }

    .issue-results-details .partial-issue-legend,
    .overlap-exclusive-issues .partial-issue-legend {
        gap: var(--space-1);
        font-size: var(--font-xs);
        white-space: nowrap;
    }

    .issue-results-details .partial-issue-swatch,
    .overlap-exclusive-issues .partial-issue-swatch {
        --partial-corner-size: 0.75rem;

        width: 0.875rem;
        height: 0.875rem;
        padding: 0;
        border-radius: 2px;
        font-size: 0;
    }

    .partial-issue-legend-full {
        display: none;
    }

    .partial-issue-legend-compact {
        display: inline;
    }

    .issue-series-list-header,
    .issue-flat-list-header {
        display: none;
    }

    .issue-flat-row {
        grid-template-columns: 3.25rem minmax(0, 1fr);
        row-gap: var(--space-1);
    }

    .issue-flat-qualifier {
        grid-column: 2;
        grid-row: 2;
    }

    .issue-flat-qualifier::before {
        color: var(--text-muted);
        content: "Issue note: ";
    }

    .issue-series-group {
        grid-template-columns: minmax(0, 1fr);
        row-gap: var(--space-3);
        padding: var(--space-4) var(--space-3);
        border-top: var(--border-width) solid var(--border-subtle);
    }

    .issue-series-list-header + .issue-series-group {
        border-top: 0;
    }

    .issue-series-header {
        grid-column: 1;
    }

    .issue-number-list {
        grid-column: 1;
        grid-row: 2;
    }
}

@media (max-width: 64rem) and (hover: hover) and (pointer: fine) {
    .contents-filters {
        padding-bottom: var(--space-1);
        scrollbar-color: var(--border-default) transparent;
        scrollbar-width: thin;
    }

    .contents-filters::-webkit-scrollbar {
        display: block;
        height: 0.375rem;
    }

    .contents-filters::-webkit-scrollbar-track {
        background: transparent;
    }

    .contents-filters::-webkit-scrollbar-thumb {
        background: var(--border-default);
        border-radius: var(--border-radius);
    }
}

/* =========================
   Support callout
   ========================= */
.support-callout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
    margin-top: var(--space-12);
    padding: var(--space-4) var(--space-8);

    background:
        linear-gradient(
            110deg,
            color-mix(in srgb, var(--accent-900) 18%, var(--primary-800)),
            color-mix(in srgb, var(--accent-900) 42%, var(--primary-800))
        );
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-inset-highlight), var(--shadow-sm);
}

.comparison-page > .support-callout {
    margin-top: var(--space-6);
}

.support-callout-copy {
    max-width: 46rem;
}

.support-callout h2 {
    font-size: clamp(var(--font-base), 1.75vw, var(--font-lg));
    line-height: 1.15;
}

.support-callout p {
    margin-top: var(--space-1);
    color: var(--text-muted);
    font-size: var(--font-sm);
}

.support-callout-link {
    flex: 0 0 auto;
    padding: var(--space-3) var(--space-4);

    color: var(--text);
    background: linear-gradient(135deg, var(--accent-700), var(--accent-600));
    border: var(--border-width) solid var(--accent-500);
    border-radius: var(--border-radius);
    box-shadow:
        inset 0 1px 0 var(--action-highlight),
        var(--shadow-sm);

    font-size: var(--font-sm);
    font-weight: var(--weight-semibold);
    text-decoration: none;
    transition:
        background-color 150ms ease,
        border-color 150ms ease;
}

.support-callout-link:hover {
    background: linear-gradient(135deg, var(--accent-600), var(--accent-500));
    border-color: var(--accent-300);
    box-shadow:
        inset 0 1px 0 hsl(35 88% 90% / 0.24),
        0 0.75rem 1.5rem var(--action-shadow);
}

.support-callout-link:focus-visible {
    outline: var(--border-width-med) solid var(--text);
    outline-offset: var(--space-2);
}

/* =========================
   Support page
   ========================= */
.support-intro-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    justify-self: center;
    width: 12.5rem;
    height: 2.5rem;
    padding: 0.625rem var(--space-4);

    color: var(--text);
    background: var(--accent-400);
    border: 0;
    border-radius: 0.5rem;
    box-shadow: none;
    line-height: 1.25;
    font-weight: var(--weight-bold);
    white-space: nowrap;
}

.support-intro-action:hover {
    color: var(--text);
    background: var(--accent-500);
    border-color: transparent;
    box-shadow: none;
}

.support-kofi-panel {
    width: min(100%, calc(var(--reading-measure) + var(--space-16)));
    margin-top: var(--space-6);
    overflow: hidden;
    border-radius: var(--border-radius);
}

.support-kofi-panel iframe {
    display: block;
    border-radius: inherit;
}

/* =========================
   Data & credits page
   ========================= */
.data-credits-section {
    display: grid;
    gap: var(--space-3);
    padding-top: var(--space-2);
    border-top: var(--border-width) solid var(--border-subtle);
}

.data-credits-list {
    display: grid;
    gap: var(--space-3);
    margin: 0;
    padding-left: var(--space-4);
}

.data-credits-list li::marker {
    color: var(--primary-300);
}

/* =========================
   How comparisons work page
   ========================= */
.how-it-works-note {
    display: grid;
    gap: var(--space-3);
    padding-top: var(--space-2);
    border-top: var(--border-width) solid var(--border-subtle);
}

/* =========================
   Feedback page
   ========================= */
.feedback-email-link {
    justify-self: start;
}

.feedback-guidance {
    margin-top: var(--space-2);
    padding-top: var(--space-6);
    border-top: var(--border-width) solid var(--border-subtle);
}

.feedback-guidance ul {
    display: grid;
    gap: var(--space-2);
    margin: var(--space-3) 0 0;
    padding: 0;
    list-style: none;
}

.feedback-guidance li {
    position: relative;
    padding-left: var(--space-4);
}

.feedback-guidance li::before {
    content: "";
    position: absolute;
    top: 0.7em;
    left: 0;

    width: var(--space-2);
    aspect-ratio: 1;
    background: var(--primary-300);
    border-radius: 50%;
}

@media (max-width: 48rem) {
    .support-callout {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
        padding: var(--space-4) var(--space-6);
    }

    .text-panel {
        padding-right: var(--space-6);
        padding-left: var(--space-6);
    }

    .text-page-panel {
        padding-right: var(--space-6);
        padding-left: var(--space-6);
    }
}

/* =========================
   Footer
   ========================= */

.site-footer {
    margin-top: var(--space-12);

    flex: 0 0 auto;

    background: var(--primary-900);
    border-top: var(--border-width) solid var(--border-color);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: var(--space-6);
    min-height: 4rem;
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-3) var(--space-8);
}

.footer-meta,
.footer-nav {
    display: flex;
    align-items: center;
    gap: var(--space-4);

    color: var(--text-muted);
    font-size: var(--font-xs);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.footer-nav {
    gap: var(--space-2);
    flex: 0 0 auto;
    flex-wrap: nowrap;
}

.footer-nav a {
    white-space: nowrap;
}

.footer-meta {
    display: grid;
    grid-template-columns: minmax(0, 1fr) var(--border-width) minmax(0, 1fr);
    width: 42rem;
    gap: var(--space-4);
}

.footer-meta > span {
    min-width: 0;
}

.footer-meta > span:first-child,
.footer-meta > span:last-child {
    text-align: center;
}

.footer-divider {
    width: var(--border-width);
    height: 0.8rem;
    flex: 0 0 auto;
    background: var(--grey-600);
}

.footer-meta a,
.footer-nav a {
    position: relative;

    color: var(--primary-200);
    text-decoration: none;
}

.footer-meta a:hover,
.footer-nav a:hover {
    color: var(--text);
}

@media (max-width: 79.5rem) {
    .footer-content {
        flex-direction: column;
        align-items: center;
    }

    .footer-nav {
        flex-wrap: wrap;
    }

    .footer-nav a {
        white-space: normal;
    }

    .footer-meta {
        width: min(100%, 42rem);
    }
}

@media (max-width: 48rem) {
    .footer-content {
        display: grid;
        grid-template-columns: minmax(0, 1fr) max-content;
        align-items: start;
        gap: var(--space-8);
    }

    .footer-nav {
        flex-direction: column;
        align-items: end;
        gap: var(--space-2);
        flex-wrap: nowrap;
    }

    .footer-meta {
        display: flex;
        flex-direction: column;
        align-items: start;
        width: auto;
        gap: var(--space-2);
    }

    .footer-meta > span:first-child,
    .footer-meta > span:last-child {
        text-align: left;
    }

    .footer-meta .footer-divider,
    .footer-nav .footer-divider {
        display: none;
    }
}