/* ==========================================================================
   koomimi.com — pressed-flower herbarium
   Layered-depth terrarium · frutiger-clean typography · analogous palette
   ========================================================================== */

@property --mid {
    syntax: '<percentage>';
    inherits: false;
    initial-value: 60%;
}

:root {
    /* Palette — analogous, cool botanicals */
    --oat-cream: #F4F0E6;
    --pressed-page: #E8E4D4;
    --eucalyptus-mist: #D8DCC8;
    --lavender-shade: #C4C8D8;
    --sage-stem: #A8B4A0;
    --dusk-petal: #8B92A4;
    --pressed-violet: #4E465C;
    --shadow-stem: #2A2632;
    --warm-honey: #D4A878;

    /* Type */
    --font-display: 'Hanken Grotesk', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, sans-serif;
    --font-italic: 'Cormorant Garamond', 'Inter', serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;

    /* Grid */
    --col-width: 88px;
    --gutter: 24px;
    --outer-margin: 168px;

    /* Scroll-driven custom property — set by JS */
    --scroll: 0px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    background: var(--oat-cream);
}

body {
    background: var(--oat-cream);
    color: var(--pressed-violet);
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 1.06rem;
    line-height: 1.62;
    overflow-x: hidden;
    cursor: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.svg-defs {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

/* ==========================================================================
   Plane primitives — five strata
   ========================================================================== */

.plane {
    position: absolute;
    inset: 0;
    pointer-events: none;
    will-change: transform;
}

.plane-window {
    z-index: 0;
    height: 100%;
    overflow: hidden;
}

.horizon {
    position: fixed;
    inset: 0;
    background: linear-gradient(
        180deg,
        var(--lavender-shade) 0%,
        var(--pressed-page) var(--mid),
        var(--oat-cream) 100%
    );
    animation: horizon-breath 24s ease-in-out infinite;
    transform: translateZ(0);
}

@keyframes horizon-breath {
    0%, 100% { --mid: 56%; }
    50% { --mid: 64%; }
}

.plane-mist {
    z-index: 1;
    pointer-events: none;
}

.mist-bloom {
    position: absolute;
    width: 56vw;
    height: 56vw;
    max-width: 880px;
    max-height: 880px;
    pointer-events: none;
}

.mist-bloom-a {
    top: 18vh;
    right: -12vw;
}

.mist-bloom-b {
    top: 240vh;
    left: -16vw;
}

.mist-fern {
    position: absolute;
    width: 220px;
    height: 396px;
    pointer-events: none;
    opacity: 0.95;
}

.mist-fern-a {
    top: 80vh;
    left: 4vw;
    transform: rotate(-7deg);
}

.mist-fern-b {
    top: 380vh;
    right: 5vw;
    transform: rotate(11deg) scaleX(-1);
}

/* The vine — fixed, full-document SVG path */
.vine {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
    mix-blend-mode: multiply;
}

#vine-path {
    /* stroke-dashoffset is set on first paint and updated by script.js */
    transition: stroke-dashoffset 60ms linear;
}

/* Catalogue spine — vertical 1px hairline broken into ticks */
.catalogue-spine {
    position: fixed;
    top: 0;
    left: var(--outer-margin);
    width: 1px;
    height: 100vh;
    pointer-events: none;
    z-index: 4;
    opacity: 0.85;
}

.spine-rule {
    width: 1px;
    height: 100%;
    background-image: repeating-linear-gradient(
        to bottom,
        var(--sage-stem) 0,
        var(--sage-stem) 32px,
        transparent 32px,
        transparent 47px
    );
    opacity: 0.55;
}

/* Plane 1 glass — navigation and vellum slips */
.plane-glass {
    z-index: 50;
    position: absolute;
    inset: 0;
    height: 100%;
    pointer-events: none;
}

.nav-chip {
    position: fixed;
    top: 28px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(244, 240, 230, 0.78);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 0.5px solid var(--sage-stem);
    border-radius: 999px;
    padding: 9px 22px;
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 0.84rem;
    letter-spacing: 0.01em;
    color: var(--pressed-violet);
    box-shadow: 0 6px 16px rgba(78, 70, 92, 0.06);
    pointer-events: auto;
    z-index: 200;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.nav-mark {
    font-weight: 500;
    letter-spacing: 0.02em;
}

.nav-sep {
    color: var(--sage-stem);
}

.nav-sub {
    color: var(--dusk-petal);
    font-style: italic;
    font-family: var(--font-italic);
    font-weight: 300;
    font-size: 0.92rem;
}

/* Vellum slips drift on Plane 1 */
.vellum-slip {
    position: absolute;
    background: rgba(244, 240, 230, 0.72);
    border: 0.4px solid var(--sage-stem);
    padding: 8px 14px;
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 0.84rem;
    color: var(--pressed-violet);
    letter-spacing: 0.01em;
    box-shadow: 0 6px 12px rgba(78, 70, 92, 0.06);
    animation: slip-drift 14s ease-in-out infinite;
    animation-delay: var(--slip-delay, 0s);
    transform-origin: 50% 50%;
    pointer-events: none;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

@keyframes slip-drift {
    0%, 100% { transform: translate(-3px, 0) rotate(-2.4deg); }
    50% { transform: translate(3px, -2px) rotate(2.6deg); }
}

/* ==========================================================================
   Content — strata, grid, sections
   ========================================================================== */

.content {
    position: relative;
    z-index: 10;
    padding: 0 var(--outer-margin);
    max-width: 100%;
}

.stratum {
    position: relative;
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--gutter);
    padding: 14vh 0;
    z-index: 10;
}

.spine-tick {
    position: absolute;
    top: 14vh;
    left: -28px;
    transform: translateX(-100%);
    font-family: var(--font-mono);
    font-weight: 300;
    font-size: 0.74rem;
    letter-spacing: 0.08em;
    color: var(--sage-stem);
    white-space: nowrap;
    text-transform: uppercase;
}

.spine-tick::before {
    content: attr(data-tick);
}

.spine-tick::after {
    content: '';
    display: inline-block;
    margin-left: 14px;
    width: 22px;
    height: 1px;
    background: var(--sage-stem);
    vertical-align: middle;
    opacity: 0.6;
}

.kicker {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--sage-stem);
    margin-bottom: 16px;
}

.section-head {
    grid-column: 1 / span 8;
    margin-bottom: 6vh;
}

.section-title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    letter-spacing: -0.005em;
    color: var(--pressed-violet);
    line-height: 1.18;
    position: relative;
    display: inline-block;
}

.section-title[data-underline]::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -10px;
    height: 1px;
    width: 0;
    background: var(--sage-stem);
    transition: width 540ms cubic-bezier(0.22, 1, 0.36, 1);
}

.section-title.is-revealed[data-underline]::after {
    width: 100%;
}

.section-lede {
    margin-top: 18px;
    font-size: 1rem;
    color: var(--pressed-violet);
    opacity: 0.78;
    max-width: 56ch;
    font-weight: 400;
}

/* ==========================================================================
   1. FRONTISPIECE
   ========================================================================== */

.frontispiece {
    min-height: 100vh;
    align-content: center;
    padding-top: 18vh;
    padding-bottom: 18vh;
}

.frontispiece-leaf {
    grid-column: 1 / span 5;
    grid-row: 1;
    align-self: center;
    justify-self: center;
    width: clamp(260px, 32vw, 420px);
    aspect-ratio: 2/3;
    transform: rotate(-3deg);
    opacity: 0.85;
    animation: leaf-rotate 40s linear infinite;
    transform-origin: 50% 60%;
}

@keyframes leaf-rotate {
    0% { transform: rotate(-3deg); }
    50% { transform: rotate(-1deg); }
    100% { transform: rotate(-3deg); }
}

.leaf-svg {
    width: 100%;
    height: 100%;
}

.frontispiece-mark {
    grid-column: 6 / span 7;
    grid-row: 1;
    align-self: center;
}

.display-title {
    font-family: var(--font-display);
    font-weight: 200;
    font-size: clamp(3.4rem, 7.6vw, 6.8rem);
    letter-spacing: -0.018em;
    line-height: 0.94;
    color: var(--pressed-violet);
    margin-bottom: 28px;
}

.display-title span {
    display: inline-block;
}

.display-title .letter {
    display: inline-block;
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 540ms cubic-bezier(0.22, 1, 0.36, 1),
                transform 540ms cubic-bezier(0.22, 1, 0.36, 1);
}

.display-title .letter.is-in {
    opacity: 1;
    transform: translateY(0);
}

.subtitle {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 1.08rem;
    line-height: 1.62;
    max-width: 48ch;
    color: var(--pressed-violet);
    opacity: 0.85;
    margin-bottom: 18px;
}

.binomial {
    font-family: var(--font-italic);
    font-style: italic;
    font-weight: 300;
    font-size: 0.92rem;
    color: var(--dusk-petal);
}

.binomial em {
    font-style: italic;
}

/* ==========================================================================
   2. VITRINE — five-step descending stagger
   ========================================================================== */

.vitrine {
    padding-top: 18vh;
    padding-bottom: 22vh;
    grid-auto-rows: min-content;
}

.vitrine-head {
    grid-column: 1 / span 5;
    grid-row: 1;
    margin-bottom: 0;
}

.specimen-card {
    position: relative;
    grid-column: var(--col-start) / span var(--col-span);
    background: var(--pressed-page);
    aspect-ratio: 4 / 5;
    padding: 28px;
    box-shadow: 0 18px 40px rgba(78, 70, 92, 0.10),
                0 1px 0 rgba(255, 255, 255, 0.5) inset;
    transform: rotate(var(--tilt, 0deg)) translateY(var(--cross-offset, 0px));
    transition: transform 600ms cubic-bezier(0.22, 1, 0.36, 1);
    overflow: hidden;
    isolation: isolate;
    margin-top: 6vh;
    will-change: transform;
}

.specimen-card.card-1 { grid-row: 1; margin-top: -2vh; }
.specimen-card.card-2 { grid-row: 2; }
.specimen-card.card-3 { grid-row: 3; }
.specimen-card.card-4 { grid-row: 4; }
.specimen-card.card-5 { grid-row: 5; }

.specimen-card:hover {
    transform: rotate(0deg) translateY(calc(var(--cross-offset, 0px) - 4px));
}

.folio-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, var(--eucalyptus-mist) 1px, transparent 1px),
        linear-gradient(to bottom, var(--eucalyptus-mist) 1px, transparent 1px);
    background-size: 12px 12px;
    opacity: 0.22;
    pointer-events: none;
    z-index: 0;
}

.folio-corner-label {
    position: absolute;
    top: 16px;
    right: 18px;
    font-family: var(--font-mono);
    font-weight: 300;
    font-size: 0.66rem;
    color: var(--sage-stem);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    z-index: 4;
    transition: opacity 420ms ease;
}

.specimen-card.is-loaded .folio-corner-label {
    opacity: 0.4;
}

.specimen-card.is-loaded .folio-corner-label::before {
    content: 'No. ';
}

.specimen-card.is-loaded .folio-corner-label {
    /* swap text via attr fallback handled in JS */
}

.folio-thread {
    position: absolute;
    top: 36px;
    right: 22px;
    width: 160px;
    height: 60px;
    z-index: 3;
    opacity: 0;
    transition: opacity 480ms ease 240ms;
    pointer-events: none;
}

.specimen-card.is-loaded .folio-thread {
    opacity: 1;
}

.folio-tag {
    position: absolute;
    top: 88px;
    right: 22px;
    background: var(--oat-cream);
    border: 0.4px solid var(--sage-stem);
    padding: 8px 14px;
    z-index: 4;
    transform: rotate(2.4deg);
    transform-origin: top right;
    box-shadow: 0 6px 12px rgba(78, 70, 92, 0.08);
    opacity: 0;
    transition: opacity 480ms ease 320ms, transform 480ms cubic-bezier(0.22, 1, 0.36, 1) 320ms;
    min-width: 160px;
}

.specimen-card.is-loaded .folio-tag {
    opacity: 1;
}

.folio-tag em {
    display: block;
    font-family: var(--font-italic);
    font-style: italic;
    font-weight: 300;
    font-size: 0.92rem;
    color: var(--pressed-violet);
    letter-spacing: 0.005em;
}

.tag-meta {
    display: block;
    font-family: var(--font-mono);
    font-weight: 300;
    font-size: 0.62rem;
    color: var(--sage-stem);
    letter-spacing: 0.08em;
    margin-top: 4px;
}

.folio-shimmer {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        100deg,
        transparent 30%,
        rgba(216, 220, 200, 0.42) 50%,
        transparent 70%
    );
    background-size: 250% 100%;
    background-position: 200% 0;
    animation: shimmer-sweep 1.8s linear infinite;
    pointer-events: none;
    z-index: 2;
    transform: skewX(-4deg);
    transition: opacity 380ms ease;
}

@keyframes shimmer-sweep {
    0% { background-position: 200% 0; }
    100% { background-position: -100% 0; }
}

.specimen-card.is-loaded .folio-shimmer {
    opacity: 0;
    animation: none;
}

.specimen-svg {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    padding: 32px;
    pointer-events: none;
}

.specimen-svg svg {
    width: 100%;
    height: 100%;
    max-height: 100%;
    overflow: visible;
}

/* path-draw animation for stems */
.spec-stem {
    fill: none;
    stroke: var(--sage-stem);
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.spec-leaf {
    fill: var(--eucalyptus-mist);
    fill-opacity: 0.78;
    stroke: var(--sage-stem);
    stroke-width: 0.5;
}

.spec-blossom {
    fill: url(#blossom-violet);
}

.specimen-card .spec-stem,
.colophon-card .spec-stem,
.thumb .spec-stem {
    stroke-dasharray: var(--len, 600);
    stroke-dashoffset: var(--len, 600);
    transition: stroke-dashoffset 360ms cubic-bezier(0.22, 1, 0.36, 1) 0ms;
}

.specimen-card.is-loaded .spec-stem,
.colophon-card.is-loaded .spec-stem,
.thumb.is-loaded .spec-stem {
    stroke-dashoffset: 0;
}

.specimen-card .spec-leaf,
.colophon-card .spec-leaf,
.thumb .spec-leaf {
    opacity: 0;
    transition: opacity 320ms ease;
}

.specimen-card.is-loaded .spec-leaf,
.colophon-card.is-loaded .spec-leaf,
.thumb.is-loaded .spec-leaf {
    opacity: 0.78;
    transition-delay: calc(360ms + (var(--leaf-i, 0) * 80ms));
}

.specimen-card .spec-blossom,
.colophon-card .spec-blossom,
.thumb .spec-blossom {
    opacity: 0;
    transform: scale(0.86);
    transform-origin: center;
    transform-box: fill-box;
    transition: opacity 220ms cubic-bezier(0.22, 1, 0.36, 1) 500ms,
                transform 220ms cubic-bezier(0.22, 1, 0.36, 1) 500ms;
}

.specimen-card.is-loaded .spec-blossom,
.colophon-card.is-loaded .spec-blossom,
.thumb.is-loaded .spec-blossom {
    opacity: 1;
    transform: scale(1);
}

.folio-caption {
    position: absolute;
    left: 28px;
    bottom: 28px;
    right: 200px;
    z-index: 5;
    background: linear-gradient(0deg, var(--pressed-page) 60%, transparent 100%);
    padding-top: 24px;
}

.folio-caption h3 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.18rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--pressed-violet);
    margin-bottom: 8px;
}

.folio-caption p {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 0.96rem;
    line-height: 1.55;
    color: var(--pressed-violet);
    opacity: 0.85;
    max-width: 36ch;
}

/* ==========================================================================
   3. GLOSSARY
   ========================================================================== */

.glossary {
    padding-bottom: 18vh;
}

.glossary-body {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--gutter);
}

.gloss-prose {
    grid-column: 4 / span 5;
}

.gloss-prose p {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 1.06rem;
    line-height: 1.62;
    max-width: 64ch;
    color: var(--pressed-violet);
    margin-bottom: 1.4em;
}

.gloss-prose p:first-child::first-letter {
    font-family: var(--font-display);
    font-weight: 200;
    font-size: 3.4em;
    float: left;
    line-height: 0.92;
    margin: 4px 14px 0 0;
    color: var(--pressed-violet);
}

.gloss-margin {
    grid-column: 9 / span 3;
    display: flex;
    flex-direction: column;
    gap: 26px;
    padding-top: 12px;
}

.margin-slip {
    background: var(--pressed-page);
    border: 0.4px solid var(--sage-stem);
    padding: 18px 20px;
    box-shadow: 0 6px 14px rgba(78, 70, 92, 0.06);
    transform: rotate(-1.2deg);
    position: relative;
}

.margin-slip:nth-child(2) { transform: rotate(0.8deg); }
.margin-slip:nth-child(3) { transform: rotate(-0.6deg); }
.margin-slip:nth-child(4) { transform: rotate(1.4deg); }

.margin-slip h4 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.74rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--sage-stem);
    margin-bottom: 8px;
}

.margin-slip p {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--pressed-violet);
}

/* ==========================================================================
   4. ATELIER LETTER
   ========================================================================== */

.atelier {
    padding-top: 8vh;
    padding-bottom: 18vh;
}

.atelier-letter {
    grid-column: 2 / span 9;
    background: var(--pressed-page);
    padding: 60px 70px;
    box-shadow: 0 24px 60px rgba(78, 70, 92, 0.10);
    border: 0.4px solid var(--sage-stem);
    position: relative;
    transform: rotate(-0.4deg);
}

.atelier-letter::before {
    content: '';
    position: absolute;
    inset: 14px;
    border: 0.4px dashed var(--sage-stem);
    opacity: 0.3;
    pointer-events: none;
}

.atelier-prose {
    font-family: var(--font-italic);
    font-style: italic;
    font-weight: 400;
    font-size: 1.18rem;
    line-height: 1.62;
    color: var(--pressed-violet);
    margin-bottom: 1.3em;
    max-width: 60ch;
}

.atelier-sign {
    font-family: var(--font-italic);
    font-style: italic;
    font-weight: 300;
    font-size: 1rem;
    color: var(--dusk-petal);
    margin-top: 36px;
    text-align: right;
}

/* ==========================================================================
   5. HERBARIUM INDEX
   ========================================================================== */

.herbarium-index {
    padding-bottom: 22vh;
}

.index-grid {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 28px;
    margin-top: 32px;
}

.thumb {
    position: relative;
    background: var(--pressed-page);
    aspect-ratio: 3 / 4;
    padding: 14px;
    box-shadow: 0 10px 22px rgba(78, 70, 92, 0.08);
    overflow: hidden;
    isolation: isolate;
    transform: rotate(var(--tilt, 0deg));
    transition: transform 420ms cubic-bezier(0.22, 1, 0.36, 1);
}

.thumb:hover {
    transform: rotate(0deg) translateY(-4px);
}

.thumb .folio-grid {
    background-size: 8px 8px;
    opacity: 0.18;
}

.thumb .specimen-svg {
    padding: 14px 14px 36px;
}

.thumb-label {
    position: absolute;
    left: 14px;
    bottom: 10px;
    right: 14px;
    z-index: 5;
}

.thumb-label em {
    display: block;
    font-family: var(--font-italic);
    font-style: italic;
    font-weight: 300;
    font-size: 0.82rem;
    color: var(--pressed-violet);
    line-height: 1.18;
}

.thumb-label .thumb-num {
    font-family: var(--font-mono);
    font-weight: 300;
    font-size: 0.6rem;
    color: var(--sage-stem);
    letter-spacing: 0.08em;
    margin-top: 2px;
    display: block;
}

.thumb .folio-shimmer {
    background-size: 250% 100%;
    background-position: 200% 0;
}

/* ==========================================================================
   6. COLOPHON
   ========================================================================== */

.colophon {
    padding-top: 8vh;
    padding-bottom: 22vh;
}

.colophon-card {
    grid-column: 2 / span 8;
    background: var(--pressed-page);
    padding: 56px 64px;
    box-shadow: 0 28px 68px rgba(78, 70, 92, 0.12);
    border: 0.4px solid var(--sage-stem);
    position: relative;
    overflow: hidden;
    isolation: isolate;
    transform: rotate(0deg);
    transition: transform 1200ms cubic-bezier(0.22, 1, 0.36, 1);
    min-height: 480px;
}

.colophon-card.is-tilted {
    transform: rotate(-1.4deg);
}

.colophon-corner {
    color: var(--sage-stem);
    opacity: 0.7;
}

.colophon-card .specimen-svg {
    position: absolute;
    inset: auto 40px 40px auto;
    width: 220px;
    height: 280px;
    padding: 0;
}

.colophon-prose {
    position: relative;
    z-index: 5;
    max-width: 56ch;
    margin-top: 60px;
}

.closing-line {
    font-family: var(--font-italic);
    font-style: italic;
    font-weight: 400;
    font-size: 1.42rem;
    line-height: 1.42;
    color: var(--pressed-violet);
    margin-bottom: 28px;
}

.brass-bell {
    color: var(--pressed-violet);
    text-decoration: none;
    border-bottom: 0.5px solid var(--sage-stem);
    padding-bottom: 1px;
    transition: color 420ms ease, border-color 420ms ease;
}

.brass-bell:hover {
    color: var(--warm-honey);
    border-color: var(--warm-honey);
}

.colophon-meta {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 0.92rem;
    line-height: 1.55;
    color: var(--pressed-violet);
    opacity: 0.78;
    margin-bottom: 18px;
}

.colophon-foot {
    font-family: var(--font-mono);
    font-weight: 300;
    font-size: 0.74rem;
    letter-spacing: 0.08em;
    color: var(--sage-stem);
    text-transform: uppercase;
}

/* ==========================================================================
   Cursor presence
   ========================================================================== */

.cursor-dot {
    position: fixed;
    top: 0;
    left: 0;
    width: 5px;
    height: 5px;
    background: var(--sage-stem);
    border-radius: 50%;
    opacity: 0.4;
    pointer-events: none;
    z-index: 9999;
    mix-blend-mode: multiply;
    transform: translate(-50%, -50%);
    transition: width 240ms ease, height 240ms ease, opacity 240ms ease;
}

.cursor-dot.is-on-card {
    width: 14px;
    height: 14px;
    opacity: 0.55;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1280px) {
    :root {
        --outer-margin: 96px;
    }
    .catalogue-spine { left: 96px; }
}

@media (max-width: 1024px) {
    :root {
        --outer-margin: 56px;
    }
    .catalogue-spine { left: 56px; }
    .stratum {
        grid-template-columns: repeat(8, minmax(0, 1fr));
    }
    .frontispiece-leaf { grid-column: 1 / span 3; }
    .frontispiece-mark { grid-column: 4 / span 5; }
    .vitrine-head { grid-column: 1 / span 8; }
    .specimen-card { grid-column: 1 / span 8 !important; }
    .gloss-prose { grid-column: 1 / span 8; }
    .gloss-margin { grid-column: 1 / span 8; flex-direction: row; flex-wrap: wrap; }
    .margin-slip { flex: 1 1 220px; }
    .atelier-letter { grid-column: 1 / span 8; padding: 40px 36px; }
    .colophon-card { grid-column: 1 / span 8; padding: 40px 32px; }
    .index-grid { grid-template-columns: repeat(3, 1fr); }
    .display-title { font-size: clamp(2.6rem, 10vw, 4.4rem); }
    .colophon-card .specimen-svg { width: 140px; height: 180px; inset: auto 24px 24px auto; }
}

@media (max-width: 640px) {
    :root {
        --outer-margin: 24px;
    }
    .catalogue-spine { left: 24px; }
    body { cursor: auto; }
    .cursor-dot { display: none; }
    .stratum { padding: 9vh 0; }
    .index-grid { grid-template-columns: repeat(2, 1fr); }
    .specimen-card { aspect-ratio: 3 / 4; padding: 18px; }
    .folio-caption { left: 18px; bottom: 18px; right: 18px; }
    .nav-chip { font-size: 0.74rem; padding: 7px 16px; }
    .nav-sub { display: none; }
    .vellum-slip { display: none; }
    .spine-tick { display: none; }
    .atelier-letter { padding: 28px 22px; }
    .atelier-prose { font-size: 1rem; }
    .colophon-card .specimen-svg { position: relative; inset: auto; width: 100%; height: 200px; margin: 24px 0; }
    .colophon-card { min-height: 0; }
    .colophon-prose { margin-top: 24px; }
}

/* ==========================================================================
   Reduced motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .horizon { animation-duration: 60s; }
    .vellum-slip { animation: none; }
    .frontispiece-leaf { animation: none; }
    .specimen-card { transform: rotate(0) translateY(0); }
    #vine-path { stroke-dashoffset: 0 !important; transition: none; }
    .folio-shimmer { animation-duration: 200ms; }
    .display-title .letter { opacity: 1; transform: none; transition: none; }
}