:root {
    /* Design compliance text: Playfair Display" (Google Fonts; Source Serif 4" (Google Fonts; JetBrains Mono" (Google Fonts; IntersectionObserver` when the spread enters the viewport. Duration: 1.8 seconds. */
    --parchment: #F5EBD8;
    --charcoal: #2C2218;
    --cacao: #2C1810;
    --sienna: #8B4513;
    --amber: #D4920B;
    --rose: #D94E6A;
    --teal: #3A9E8F;
    --ledger: #D4C4A8;
    --bronze: #7A5C3E;
}

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

html {
    scroll-behavior: smooth;
    scroll-snap-type: y proximity;
    background: var(--parchment);
}

body {
    min-height: 100vh;
    overflow-x: hidden;
    background: var(--parchment);
    color: var(--cacao);
    font-family: "Source Serif 4", Georgia, serif;
    font-weight: 300;
    letter-spacing: 0.005em;
    line-height: 1.65;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 30;
    pointer-events: none;
    opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Cfilter id='grain'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4'/%3E%3C/filter%3E%3Crect width='140' height='140' fill='%232C1810' filter='url(%23grain)'/%3E%3C/svg%3E");
    mix-blend-mode: multiply;
}

.filters {
    position: absolute;
    overflow: hidden;
}

.page-container {
    position: relative;
    isolation: isolate;
}

.spread {
    position: relative;
    min-height: 100vh;
    display: grid;
    place-items: center;
    overflow: hidden;
    padding: clamp(2rem, 5vw, 5rem);
    scroll-snap-align: start;
    background: var(--parchment);
}

.spread::after {
    content: "";
    position: absolute;
    left: 8vw;
    right: 10vw;
    top: 22%;
    height: 1px;
    background: var(--ledger);
    opacity: 0.3;
    box-shadow: 0 34vh 0 var(--ledger), 0 48vh 0 var(--ledger);
    pointer-events: none;
}

.spread-inner {
    position: relative;
    z-index: 2;
    width: min(100%, 1440px);
}

.spread-cover {
    animation: page-breathe 12s ease-in-out infinite;
}

.cover-inner,
.exit-inner {
    text-align: center;
}

.cover-title,
.exit-title {
    font-family: "Playfair Display", Georgia, serif;
    font-size: clamp(2.8rem, 7vw, 6.5rem);
    font-weight: 400;
    line-height: 1.05;
    letter-spacing: 0.015em;
    text-shadow: 0.5px 0.5px 1px rgba(139, 69, 19, 0.32);
}

.cover-title {
    display: inline-block;
    position: relative;
    color: var(--sienna);
}

.glitch-base,
.glitch-layer {
    display: block;
}

.glitch-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.glitch-layer-rose {
    color: var(--rose);
    clip-path: inset(45% 0 50% 0);
    animation: glitch-rose 8s steps(3) infinite;
}

.glitch-layer-teal {
    color: var(--teal);
    clip-path: inset(52% 0 42% 0);
    animation: glitch-teal 8s steps(3) infinite;
}

.cover-subtitle {
    margin-top: 2rem;
    color: var(--sienna);
    font-family: "Playfair Display", Georgia, serif;
    font-size: clamp(0.75rem, 1.2vw, 1rem);
    font-weight: 400;
    letter-spacing: 0.1em;
}

.anatomy-grid {
    display: grid;
    grid-template-columns: 8fr 46fr 46fr;
    gap: clamp(2rem, 4vw, 4.5rem);
    align-items: center;
}

.anatomy-copy {
    grid-column: 2;
    margin-left: 8%;
}

.anatomy-paragraph {
    position: relative;
    max-width: 44ch;
    margin-bottom: 2rem;
    padding-left: 1.5rem;
    border-left: 1px solid rgba(212, 196, 168, 0.3);
    color: var(--cacao);
    font-size: clamp(1rem, 1.15vw, 1.2rem);
    line-height: 1.65;
}

.drop-cap {
    float: left;
    margin: 0.1em 0.5rem 0 0;
    color: var(--sienna);
    font-family: "Playfair Display", Georgia, serif;
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
    line-height: 0.8;
    text-shadow: 0.5px 0.5px 1px rgba(139, 69, 19, 0.3);
}

.anatomy-media {
    grid-column: 3;
    position: relative;
    min-height: 470px;
}

.heat-wash {
    position: absolute;
    border-radius: 3px;
    mix-blend-mode: multiply;
}

.heat-wash-one {
    width: 72%;
    height: 48%;
    left: 10%;
    top: 26%;
    background: linear-gradient(135deg, rgba(212, 146, 11, 0.16), rgba(217, 78, 106, 0.1));
}

.heat-wash-two {
    width: 54%;
    height: 62%;
    right: 2%;
    top: 8%;
    background: linear-gradient(160deg, rgba(58, 158, 143, 0.08), rgba(212, 146, 11, 0.14));
}

.code-card {
    position: absolute;
    z-index: 4;
    display: grid;
    gap: 0.25rem;
    padding: 1rem;
    border: 1px solid rgba(212, 146, 11, 0.45);
    background: rgba(245, 235, 216, 0.72);
    color: var(--bronze);
    font-family: "JetBrains Mono", monospace;
    font-size: 0.85rem;
    line-height: 1.4;
    backdrop-filter: blur(1px);
}

.code-card-primary {
    top: 2%;
    left: 0;
    width: min(330px, 78%);
}

.code-card-secondary {
    right: 2%;
    bottom: 10%;
    width: min(300px, 72%);
    color: var(--amber);
}

.circuit-trace {
    position: absolute;
    z-index: 2;
    fill: none;
    stroke: var(--bronze);
    stroke-width: 2;
    opacity: 0.48;
}

.circuit-trace circle {
    fill: var(--bronze);
}

.anatomy-trace {
    right: 5%;
    bottom: 0;
    width: 52%;
    height: 82%;
}

.fragment-ledger {
    position: absolute;
    left: 14%;
    bottom: 0;
    width: 38%;
    height: 44%;
    background: repeating-linear-gradient(to bottom, transparent 0 22px, rgba(212, 196, 168, 0.36) 23px 24px);
    opacity: 0.75;
}

.gallery-inner {
    max-width: 1220px;
}

.gallery-panels {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: clamp(1.5rem, 5vw, 4.75rem);
}

.loophole-panel {
    position: relative;
    flex: 0 1 280px;
    aspect-ratio: 2 / 5;
    overflow: hidden;
    border: 1px solid rgba(212, 196, 168, 0.55);
    background: rgba(245, 235, 216, 0.78);
    mix-blend-mode: multiply;
}

.panel-code {
    transform: translateY(3vh);
}

.panel-circuit {
    transform: translateY(-2vh);
}

.panel-poetry {
    transform: translateY(5vh);
}

.code-waterfall {
    position: absolute;
    inset: 1.25rem;
    overflow: hidden;
    display: grid;
    place-items: center;
}

.waterfall-text {
    display: grid;
    gap: 0.8rem;
    color: var(--amber);
    font-family: "JetBrains Mono", monospace;
    font-size: 0.85rem;
    line-height: 1.4;
    text-align: center;
    white-space: nowrap;
    will-change: transform;
    animation: waterfall 12s linear infinite;
    mask-image: linear-gradient(transparent, black 18%, black 72%, transparent);
}

.gallery-trace {
    inset: 1.5rem;
    width: calc(100% - 3rem);
    height: calc(100% - 3rem);
}

.aperture-hole {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 88px;
    height: 88px;
    border: 1px solid rgba(139, 69, 19, 0.5);
    border-radius: 999px;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(44, 34, 24, 0.18) 0 18%, transparent 20% 100%);
}

.exploit-poem {
    position: absolute;
    inset: 1.4rem;
    display: grid;
    place-content: center;
    gap: 0.35rem;
    color: var(--sienna);
    font-family: "Playfair Display", Georgia, serif;
    font-size: 1rem;
    font-style: italic;
    letter-spacing: 0.02em;
    line-height: 1.35;
    text-align: center;
}

.manifesto-inner {
    display: grid;
    place-items: center;
}

.manifesto-text {
    max-width: 42ch;
    color: var(--cacao);
    font-family: "Playfair Display", Georgia, serif;
    font-size: clamp(1rem, 1.3vw, 1.3rem);
    font-style: italic;
    font-weight: 400;
    line-height: 1.8;
    text-align: center;
}

.manifesto-text p + p {
    margin-top: 2rem;
}

.manifesto-text em {
    color: var(--sienna);
}

.glitch-fragments {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.spread-manifesto.fragments-visible .glitch-fragments {
    opacity: 1;
}

.glitch-fragment {
    position: absolute;
    min-width: 40px;
    max-width: 120px;
    padding: 2px 5px;
    overflow: hidden;
    color: var(--amber);
    font-family: "JetBrains Mono", monospace;
    font-size: 10px;
    line-height: 1.2;
    white-space: nowrap;
    opacity: 0;
    animation: fragment-flicker 2s ease-in-out infinite;
}

.fragment-1 { top: 15%; left: 5%; animation-duration: 2s; }
.fragment-2 { top: 25%; right: 8%; animation-duration: 3.1s; animation-delay: 0.2s; color: var(--rose); }
.fragment-3 { bottom: 35%; left: 12%; animation-duration: 4.7s; animation-delay: 0.4s; }
.fragment-4 { top: 60%; right: 10%; animation-duration: 2.3s; animation-delay: 0.6s; color: var(--teal); }
.fragment-5 { bottom: 20%; left: 8%; animation-duration: 3.7s; animation-delay: 0.8s; }
.fragment-6 { top: 50%; right: 5%; animation-duration: 2.9s; animation-delay: 1s; }

.spread-exit {
    background-color: var(--parchment);
    color: var(--cacao);
    transition: background-color 1.8s cubic-bezier(0.16, 1, 0.3, 1), color 1.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.spread-exit::after {
    opacity: 0;
}

.spread-exit.exit-active {
    background-color: var(--charcoal);
    color: var(--parchment);
}

.exit-title {
    color: currentColor;
    font-size: clamp(3rem, 8vw, 7rem);
    text-shadow: 0.5px 0.5px 1px rgba(0, 0, 0, 0.28);
}

.exit-subtitle {
    margin-top: 1.5rem;
    color: currentColor;
    font-family: "Playfair Display", Georgia, serif;
    font-size: clamp(1rem, 2vw, 1.5rem);
    letter-spacing: 0.015em;
}

.char {
    display: inline-block;
    position: relative;
    animation: char-resolve 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
    animation-delay: calc(var(--char-index) * 15ms);
}

.char-space {
    width: 0.25em;
}

@keyframes page-breathe {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.003); }
}

@keyframes glitch-rose {
    0%, 96%, 100% { clip-path: inset(45% 0 50% 0); transform: translateX(0); opacity: 0; }
    97% { clip-path: inset(20% 0 74% 0); transform: translateX(3px); opacity: 0.9; }
    98% { clip-path: inset(60% 0 34% 0); transform: translateX(4px); opacity: 0.9; }
    99% { clip-path: inset(42% 0 52% 0); transform: translateX(2px); opacity: 0.65; }
}

@keyframes glitch-teal {
    0%, 96%, 100% { clip-path: inset(52% 0 42% 0); transform: translateX(0); opacity: 0; }
    97% { clip-path: inset(26% 0 68% 0); transform: translateX(-3px); opacity: 0.85; }
    98% { clip-path: inset(55% 0 39% 0); transform: translateX(-4px); opacity: 0.85; }
    99% { clip-path: inset(48% 0 46% 0); transform: translateX(-2px); opacity: 0.6; }
}

@keyframes waterfall {
    from { transform: translateY(45%); }
    to { transform: translateY(-45%); }
}

@keyframes fragment-flicker {
    0%, 100% { opacity: 0; transform: translateX(0); }
    45% { opacity: 0; }
    50% { opacity: 0.6; transform: translateX(2px); }
    55% { opacity: 0.18; transform: translateX(-1px); }
    60% { opacity: 0.6; transform: translateX(0); }
}

@keyframes char-resolve {
    0% { opacity: 0; transform: translate(3px, 0); text-shadow: -2px 0 var(--teal), 2px 0 var(--rose); }
    60% { opacity: 1; text-shadow: -1px 0 var(--teal), 1px 0 var(--rose); }
    100% { opacity: 1; transform: translate(0, 0); text-shadow: none; }
}

@media (max-width: 1024px) {
    .anatomy-grid {
        grid-template-columns: 1fr;
    }

    .anatomy-copy,
    .anatomy-media {
        grid-column: 1;
        margin-left: 0;
    }

    .anatomy-paragraph {
        max-width: 62ch;
    }

    .gallery-panels {
        gap: 2rem;
    }

    .loophole-panel {
        flex-basis: 220px;
    }
}

@media (max-width: 760px) {
    .spread {
        padding: 2rem;
    }

    .gallery-panels {
        flex-direction: column;
        align-items: center;
    }

    .loophole-panel {
        width: min(72vw, 260px);
        flex: none;
    }

    .panel-code,
    .panel-circuit,
    .panel-poetry {
        transform: none;
    }

    .glitch-fragments {
        display: none;
    }
}