:root {
    --contradiction-red: #E3172F;
    --rice-paper: #F3E9D2;
    --oxidized-cyan: #18B7B0;
    --void-ink: #08070A;
    --bruise-violet: #3B234A;
    --tin-mirror: #B9B1A3;
    --display: 'Archivo Black', 'Inter', sans-serif;
    --serif: 'Noto Serif JP', serif;
    --ui: 'IBM Plex Sans KR', 'Space Grotesk', sans-serif;
    --space: 'Space Grotesk', sans-serif;
    --inter: 'Inter', sans-serif;
    --design-typography-note: "IBM Plex Sans KR* KR** marginalia Korean-adjacent UI notes";
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--void-ink);
    color: var(--rice-paper);
    font-family: var(--ui);
    overflow-x: hidden;
    cursor: none;
}

body.fault-awake { background: linear-gradient(104deg, var(--rice-paper) 0 44%, var(--void-ink) 44% 100%); }
body.systems-swapped { background: linear-gradient(76deg, var(--void-ink) 0 48%, var(--rice-paper) 48% 100%); }

.paradox-duplex { position: relative; min-height: 100vh; isolation: isolate; }

.act { min-height: 100vh; position: relative; display: grid; place-items: center; padding: 7vw; overflow: hidden; }

.act-opening { background: radial-gradient(circle at 72% 24%, rgba(59,35,74,.8), transparent 32%), var(--void-ink); }

.rice-panel {
    background: var(--rice-paper);
    color: var(--void-ink);
    border: 1px solid var(--tin-mirror);
    box-shadow: 22px 22px 0 rgba(227,23,47,.72), -18px -16px 0 rgba(24,183,176,.28);
}

.intro-panel {
    width: min(720px, 78vw);
    min-height: 480px;
    padding: clamp(34px, 6vw, 72px);
    transform: translateX(-6vw) rotate(-1.5deg);
    z-index: 2;
}

.ui-note, small { font-family: var(--ui); letter-spacing: .18em; text-transform: uppercase; font-weight: 700; }

h1, h2 { font-family: var(--display); text-transform: uppercase; line-height: .86; margin: 0; }

h1 { font-size: clamp(72px, 15vw, 190px); letter-spacing: -.09em; position: relative; z-index: 2; }
h2 { font-size: clamp(42px, 8vw, 108px); letter-spacing: -.07em; }

.serif-line, blockquote { font-family: var(--serif); font-size: clamp(18px, 2.2vw, 30px); line-height: 1.55; }

.red-slash { width: 118%; height: 22px; background: var(--contradiction-red); transform: translate(-7%, -92px) rotate(-11deg); mix-blend-mode: multiply; }

.fault-button {
    border: 0;
    background: var(--void-ink);
    color: var(--rice-paper);
    font-family: var(--space);
    text-transform: uppercase;
    letter-spacing: .13em;
    padding: 18px 24px;
    margin-top: 24px;
    box-shadow: 8px 8px 0 var(--oxidized-cyan);
    transition: transform .35s ease, box-shadow .35s ease, background .35s ease;
}

.fault-button:hover { transform: translate(6px, 6px); box-shadow: 2px 2px 0 var(--oxidized-cyan); background: var(--contradiction-red); }

.opening-orbit { position: absolute; right: 10vw; top: 16vh; width: 280px; height: 280px; border: 1px solid rgba(243,233,210,.3); border-radius: 50%; animation: orbit 18s linear infinite; }

.shield-spear { position: absolute; inset: 34px; border: 18px solid var(--oxidized-cyan); border-radius: 50%; background: rgba(243,233,210,.05); }
.shield-spear span { position: absolute; left: 50%; top: -58px; width: 16px; height: 320px; background: var(--contradiction-red); transform: translateX(-50%); box-shadow: 0 0 0 4px var(--void-ink); }
.shield-spear span::before { content: ''; position: absolute; top: -34px; left: 50%; transform: translateX(-50%); border-left: 28px solid transparent; border-right: 28px solid transparent; border-bottom: 48px solid var(--contradiction-red); }

.fault-line {
    position: fixed;
    top: -8vh;
    bottom: -8vh;
    left: calc(var(--seam, 50) * 1%);
    width: 20px;
    z-index: 10;
    background: linear-gradient(var(--contradiction-red), var(--oxidized-cyan), var(--contradiction-red));
    transform: translateX(-50%) skewX(-8deg);
    box-shadow: 0 0 0 8px rgba(8,7,10,.72), 0 0 45px rgba(227,23,47,.6);
    opacity: .18;
    transition: opacity .8s ease, width .8s ease;
}

body.fault-awake .fault-line { opacity: 1; width: 28px; }
.fault-line span { display: block; writing-mode: vertical-rl; font-family: var(--display); font-size: 16px; color: var(--void-ink); margin: 42px 0; }

.act-duplex { display: grid; grid-template-columns: 1fr 1fr; gap: 0; align-items: stretch; padding: 0; background: transparent; }
.manuscript-system, .stage-system { min-height: 200vh; display: grid; align-content: start; gap: 18vh; padding: 12vh 7vw; }
.manuscript-system { background: var(--rice-paper); color: var(--void-ink); }
.stage-system { background: var(--void-ink); color: var(--rice-paper); transform: skewY(-3deg); }
body.systems-swapped .manuscript-system { order: 2; }
body.systems-swapped .stage-system { order: 1; transform: skewY(3deg); }

.chapter { min-height: 62vh; padding: clamp(28px, 5vw, 62px); position: relative; transition: transform .6s ease, filter .6s ease; }
.calm { background: rgba(185,177,163,.22); border-left: 12px solid var(--tin-mirror); }
.rupture { background: var(--bruise-violet); border: 3px solid var(--contradiction-red); box-shadow: -18px 18px 0 var(--contradiction-red); transform: rotate(-4deg); }
.chapter.is-active { transform: translateY(-18px) rotate(0deg) scale(1.025); filter: contrast(1.18); }
.chapter p { font-size: clamp(18px, 2vw, 24px); line-height: 1.45; max-width: 62ch; }

blockquote { margin: 34px 0 0; padding: 22px; border: 1px solid var(--void-ink); }
.proof-slip { display: inline-block; font-family: var(--space); background: var(--void-ink); color: var(--rice-paper); padding: 14px 18px; transform: rotate(2deg); }

.stamp-switch { width: 190px; height: 190px; border-radius: 50%; border: 10px double var(--rice-paper); background: var(--contradiction-red); color: var(--rice-paper); font-family: var(--display); font-size: 30px; display: grid; place-items: center; transform: rotate(-16deg); transition: transform .45s ease, background .45s ease; }
.stamp-switch span:last-child { display: none; }
.stamp-switch.false { background: var(--oxidized-cyan); color: var(--void-ink); transform: rotate(164deg); }
.stamp-switch.false span:first-child { display: none; }
.stamp-switch.false span:last-child { display: inline; }

.impossible-arrow { position: relative; width: 260px; height: 90px; margin-top: 40px; }
.impossible-arrow i, .impossible-arrow b { position: absolute; height: 14px; width: 230px; background: var(--oxidized-cyan); top: 38px; }
.impossible-arrow i::before, .impossible-arrow b::before { content: ''; position: absolute; top: -18px; border-top: 25px solid transparent; border-bottom: 25px solid transparent; }
.impossible-arrow i::before { right: -4px; border-left: 42px solid var(--oxidized-cyan); }
.impossible-arrow b { transform: rotate(180deg) translateY(-20px); background: var(--contradiction-red); }
.impossible-arrow b::before { right: -4px; border-left: 42px solid var(--contradiction-red); }

.act-archive { background: linear-gradient(135deg, var(--bruise-violet) 0 48%, var(--rice-paper) 48% 52%, var(--void-ink) 52%); }
.archive-grid { width: min(1180px, 92vw); display: grid; grid-template-columns: 1.1fr .8fr; gap: 28px; align-items: stretch; }
.archive-grid > div { min-height: 280px; padding: 34px; border: 1px solid var(--tin-mirror); }
.redacted-scroll { background: var(--rice-paper); color: var(--void-ink); }
.redacted-scroll p { font-family: var(--serif); font-size: 26px; background: linear-gradient(transparent 40%, var(--void-ink) 40% 66%, transparent 66%); }
.split-moon { background: var(--void-ink); display: grid; place-items: center; }
.split-moon span { width: 210px; height: 210px; border-radius: 50%; background: linear-gradient(90deg, var(--rice-paper) 0 50%, var(--contradiction-red) 50%); box-shadow: 26px 0 0 var(--oxidized-cyan); animation: moon 7s ease-in-out infinite; }
.mask-card { background: var(--tin-mirror); color: var(--void-ink); transform: rotate(-2deg); }
.errata-wall { background: var(--contradiction-red); color: var(--rice-paper); display: grid; align-content: center; gap: 18px; font-family: var(--display); font-size: clamp(28px, 5vw, 72px); line-height: .85; }
.errata-wall span:nth-child(2) { color: var(--void-ink); transform: translateX(34px); }

.act-seal { background: radial-gradient(circle, var(--bruise-violet), var(--void-ink) 62%); }
.final-seal { width: min(820px, 86vw); min-height: 520px; border-radius: 50%; border: 18px double var(--contradiction-red); display: grid; place-items: center; text-align: center; padding: 80px; background: rgba(243,233,210,.96); color: var(--void-ink); box-shadow: 0 0 0 20px rgba(24,183,176,.16); }
.final-seal h2 { font-size: clamp(38px, 7vw, 82px); }
.secondary { background: var(--bruise-violet); }

.cursor-relic { position: fixed; left: 0; top: 0; width: 34px; height: 34px; border: 3px solid var(--oxidized-cyan); border-radius: 50%; pointer-events: none; z-index: 50; transform: translate(-50%, -50%); mix-blend-mode: difference; }
.cursor-relic::after { content: ''; position: absolute; left: 50%; top: -28px; width: 5px; height: 88px; background: var(--contradiction-red); transform: translateX(-50%); }
.cursor-relic.shield { width: 54px; height: 54px; border-width: 8px; }

.smoke-field span { position: fixed; width: 1px; height: 45vh; background: linear-gradient(transparent, rgba(185,177,163,.36), transparent); top: 20vh; z-index: 1; animation: smoke 9s ease-in-out infinite; pointer-events: none; }
.smoke-field span:nth-child(1) { left: 18vw; }
.smoke-field span:nth-child(2) { left: 44vw; animation-delay: -2s; }
.smoke-field span:nth-child(3) { left: 71vw; animation-delay: -5s; }
.smoke-field span:nth-child(4) { left: 87vw; animation-delay: -7s; }

@keyframes orbit { to { transform: rotate(360deg); } }
@keyframes moon { 50% { transform: rotate(180deg) scale(.88); box-shadow: -26px 0 0 var(--oxidized-cyan); } }
@keyframes smoke { 50% { transform: translateX(32px) skewX(-12deg); opacity: .25; } }

@media (max-width: 820px) {
    body { cursor: auto; }
    .cursor-relic { display: none; }
    .intro-panel { transform: rotate(-1deg); width: 88vw; }
    .opening-orbit { opacity: .45; right: -80px; }
    .act-duplex { grid-template-columns: 1fr; }
    .manuscript-system, .stage-system { min-height: auto; padding: 10vh 7vw; }
    .archive-grid { grid-template-columns: 1fr; }
    .final-seal { border-radius: 28px; padding: 42px; }
}