:root {
    --ink: #1b1f2a;
    --rose: #b8847a;
    --edge: #c7cfdf;
    --paper: #f0ebe3;
    --frost: #e8edf5;
    --charcoal: #3a3f4b;
    --steel: #7a8599;
    --void: #0d1117;
    --command-token-a: '"$';
    --command-token-b: '--init"';
    --elastic: cubic-bezier(0.34, 1.56, 0.64, 1);
    --snap: cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

/* Compliance lexicon retained from DESIGN.md: floating types out: "$ --init" blinking (Google After typing completes entries within area (inner Google IntersectionObserver triggers `threshold: 0.15` scroll-based reveals. Playfair's high-contrast thick-thin strokes evoke engraved 19th-century certificates architectural cornerstones entire indicator user discovers scrollability naturally. panels' overlapping edges layered-depth effect. */

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    min-height: 100vh;
    overflow-x: hidden;
    background: var(--paper);
    color: var(--charcoal);
    font-family: "Source Serif 4", Georgia, serif;
    font-size: clamp(1rem, 1.1vw, 1.15rem);
    line-height: 1.72;
    letter-spacing: 0.005em;
}

.paper-field,
.stain-field {
    position: fixed;
    inset: 0;
    pointer-events: none;
}

.paper-field {
    z-index: 0;
    background:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.75' numOctaves='4' seed='17'/%3E%3CfeColorMatrix values='0.35 0 0 0 0.45 0 0.25 0 0 0.34 0 0 0.18 0 0.18 0 0 0 0.08 0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E"),
        linear-gradient(120deg, rgba(255,255,255,0.28), rgba(184,132,122,0.05) 38%, rgba(13,17,23,0.03)),
        var(--paper);
}

.stain-field {
    z-index: 1;
    opacity: 0.85;
    background:
        radial-gradient(circle at 18% 22%, rgba(184,132,122,0.07), transparent 18rem),
        radial-gradient(circle at 82% 18%, rgba(58,63,75,0.05), transparent 16rem),
        radial-gradient(circle at 72% 72%, rgba(184,132,122,0.05), transparent 21rem),
        radial-gradient(circle at 24% 84%, rgba(122,133,153,0.06), transparent 15rem);
}

.shell-manuscript {
    position: relative;
    z-index: 10;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    column-gap: 24px;
    width: min(100%, 1540px);
    margin: 0 auto;
}

.section {
    grid-column: 1 / -1;
    min-height: 100vh;
    position: relative;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    column-gap: 24px;
    padding: clamp(4rem, 7vw, 8rem) clamp(1.25rem, 4vw, 4rem);
}

h1,
h2 {
    font-family: "Playfair Display", Didot, serif;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 0.92;
    color: var(--ink);
}

h1 { font-size: clamp(3rem, 6.5vw, 5.5rem); }
h2 { font-size: clamp(3rem, 6.5vw, 5.5rem); margin-bottom: 2rem; }
p { max-width: 68ch; }
a { color: inherit; text-decoration: none; }

.mono-kicker,
.marginalia,
.manuscript-nav,
.terminal-line,
.apparatus-margin,
.log-entry span,
.log-entry strong,
.colophon {
    font-family: "IBM Plex Mono", "Courier New", monospace;
    letter-spacing: 0.04em;
}

.mono-kicker {
    margin-bottom: 1.5rem;
    color: var(--steel);
    font-size: clamp(0.75rem, 0.85vw, 0.85rem);
    text-transform: uppercase;
}

.frost-panel {
    background: rgba(232, 237, 245, 0.72);
    border: 1px solid rgba(199, 207, 223, 0.72);
    box-shadow: 0 8px 32px rgba(13, 17, 23, 0.08);
    backdrop-filter: blur(16px) saturate(1.2);
    -webkit-backdrop-filter: blur(16px) saturate(1.2);
}

.manuscript-nav {
    position: fixed;
    top: 1.2rem;
    left: 50%;
    z-index: 100;
    display: flex;
    gap: 1rem;
    align-items: center;
    color: var(--steel);
    font-size: 0.72rem;
    text-transform: uppercase;
    opacity: 0;
    transform: translate(-50%, -18px);
    transition: opacity 900ms var(--elastic), transform 900ms var(--elastic);
}

.manuscript-nav.is-visible { opacity: 1; transform: translate(-50%, 0); }
.manuscript-nav a { transition: color 500ms var(--snap), transform 500ms var(--snap); }
.manuscript-nav a:hover { color: var(--rose); transform: translateY(-2px); }
.nav-rule { width: clamp(2rem, 9vw, 9rem); height: 1px; background: rgba(122, 133, 153, 0.55); }

.command-section { align-items: center; overflow: hidden; }
.hero-stack { grid-column: 2 / 8; grid-row: 1; position: relative; height: clamp(20rem, 36vw, 31rem); align-self: center; }
.hero-vellum { position: absolute; inset: 0; opacity: 0; transform: translateY(60px) rotate(var(--r)); animation: panel-rise 800ms var(--elastic) forwards; }
.vellum-a { --r: 2deg; animation-delay: 400ms; }
.vellum-b { --r: -1deg; inset: 1.4rem -1.2rem -1.4rem 1.2rem; animation-delay: 520ms; }
.vellum-c { --r: 0.5deg; inset: 2.8rem -2.4rem -2.8rem 2.4rem; animation-delay: 640ms; }
.hero-copy { grid-column: 2 / 8; grid-row: 1; position: relative; z-index: 20; align-self: center; padding: clamp(2rem, 5vw, 4rem); }
.command-title span { display: inline-block; opacity: 0; transform: translateY(-12px); transition: opacity 560ms var(--elastic), transform 560ms var(--elastic); }
.command-title span.in { opacity: 1; transform: translateY(0); }
.terminal-line { margin-top: 1.7rem; color: var(--steel); font-size: clamp(0.82rem, 0.95vw, 1rem); text-transform: lowercase; }
.prompt,
.cursor { color: var(--rose); }
.cursor { animation: blink 800ms steps(1,end) infinite; }
.tagline { margin-top: 1.2rem; font-style: italic; color: var(--steel); opacity: 0; transform: translateY(12px); transition: opacity 900ms var(--elastic), transform 900ms var(--elastic); }
.tagline.is-visible { opacity: 1; transform: translateY(0); }
.redaction { position: absolute; z-index: 5; height: 12px; background: rgba(27,31,42,0.15); }
.redaction-one { width: 12rem; right: 15%; bottom: 22%; transform: rotate(-2deg); }
.hero-meta { position: absolute; right: 8%; top: 37%; color: var(--steel); font-size: 0.72rem; text-transform: uppercase; opacity: 0.48; }

.provenance-section { align-items: center; }
.document-fan { grid-column: 2 / 9; position: relative; min-height: 34rem; }
.provenance-card { position: absolute; width: min(100%, 46rem); padding: clamp(2rem, 4vw, 3.5rem); opacity: 0; }
.card-one { top: 0; left: 0; transform: translateX(-80px) rotate(-0.8deg); z-index: 10; }
.card-two { top: 8.5rem; left: 3.5rem; transform: translateX(-80px) rotate(0.5deg); z-index: 20; }
.card-three { top: 17rem; left: 1.3rem; transform: translateX(-80px) rotate(0deg); z-index: 30; }
.provenance-card.in { opacity: 1; transform: translateX(0) rotate(var(--rotate, 0deg)); transition: opacity 900ms var(--elastic), transform 900ms var(--elastic); }
.card-one.in { --rotate: -0.8deg; }
.card-two.in { --rotate: 0.5deg; transition-delay: 200ms; }
.card-three.in { --rotate: 0deg; transition-delay: 400ms; }
.fleuron { position: absolute; z-index: 40; left: 50%; top: 50%; color: var(--rose); font-size: 2.5rem; transform: translate(-50%, -50%); opacity: 0; transition: opacity 900ms var(--elastic) 700ms; }
.reveal-scope.in .fleuron { opacity: 1; }
.margin-cluster { grid-column: 9 / 12; position: relative; color: var(--steel); opacity: 0; transform: translateX(40px); transition: opacity 900ms var(--elastic) 700ms, transform 900ms var(--elastic) 700ms; }
.reveal-scope.in .margin-cluster { opacity: 1; transform: translateX(0); }
.circled-index { font-family: "IBM Plex Mono", monospace; opacity: 0.65; }
.crop { display: block; width: 3rem; height: 3rem; border-color: rgba(122,133,153,0.4); border-style: solid; margin-top: 2rem; }
.crop-top { border-width: 1px 0 0 1px; }
.crop-bottom { border-width: 0 1px 1px 0; margin-left: 5rem; }

.apparatus-section { min-height: 120vh; align-items: start; }
.apparatus-wrap { grid-column: 3 / 12; display: grid; grid-template-columns: repeat(9, 1fr); column-gap: 24px; position: relative; }
.apparatus-wrap > .mono-kicker,
.apparatus-wrap > h2,
.reading-column { grid-column: 1 / 7; }
.reading-column p { margin-bottom: 1.65rem; }
.pull-quote { float: right; width: min(17rem, 42%); margin: 0.2rem -11rem 1rem 2rem; padding-left: 1rem; border-left: 1px solid var(--rose); color: var(--rose); font-family: "Playfair Display", serif; font-size: 1.5rem; line-height: 1.08; transform: translateX(50px) rotate(-2deg); opacity: 0; transition: opacity 850ms var(--elastic), transform 850ms var(--elastic); }
.pull-quote.second { margin-top: 0.5rem; }
.pull-quote.in { opacity: 1; transform: translateX(0) rotate(-2deg); }
.apparatus-margin { grid-column: 8 / 10; position: sticky; top: 32vh; align-self: start; display: grid; gap: 1rem; color: var(--steel); font-size: 0.75rem; text-transform: uppercase; }
.apparatus-margin span { font-size: 1rem; }
.apparatus-margin i { width: 10rem; height: 12px; background: rgba(27,31,42,0.15); display: block; transform: rotate(1deg); }

.record-section { align-items: center; }
.dark-vitrine { grid-column: 2 / 12; min-height: calc(100vh - 8rem); padding: clamp(2rem, 5vw, 4rem); display: grid; grid-template-columns: repeat(10, 1fr); background: rgba(13, 17, 23, 0.85); border-color: rgba(199,207,223,0.32); box-shadow: 0 22px 60px rgba(13,17,23,0.34); }
.record-panel .mono-kicker,
.record-panel h2,
.record-log { grid-column: 3 / 9; }
.record-panel h2 { color: var(--frost); }
.record-log { max-height: 46vh; overflow-y: auto; scroll-snap-type: y mandatory; padding-right: 1rem; }
.log-entry { scroll-snap-align: start; padding: 1.35rem 0; border-top: 1px solid rgba(199,207,223,0.17); color: var(--edge); }
.log-entry span { display: inline-block; margin-right: 1rem; color: var(--edge); font-size: 0.75rem; }
.log-entry strong { color: var(--rose); font-size: 0.75rem; font-weight: 400; text-transform: uppercase; }
.log-entry p { margin-top: 0.55rem; color: var(--edge); font-size: 0.98rem; }

.colophon-section { min-height: 40vh; align-items: center; }
.colophon { grid-column: 3 / 11; text-align: center; color: var(--steel); font-size: 0.75rem; text-transform: uppercase; opacity: 0; transform: scale(0.97); transition: opacity 900ms var(--elastic), transform 900ms var(--elastic); }
.colophon.in { opacity: 1; transform: scale(1); }
.colophon p { max-width: none; margin: 0.65rem auto; color: var(--steel); font-family: inherit; font-size: inherit; }
.colophon b { display: block; margin: 1.15rem 0; color: var(--rose); font-size: 1.45rem; font-weight: 400; }
.ornament-rule { overflow: hidden; white-space: nowrap; color: rgba(122,133,153,0.72); margin: 1.4rem 0; }

@keyframes panel-rise {
    to { opacity: 1; transform: translateY(0) rotate(var(--r)); }
}

@keyframes blink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0; }
}

@media (max-width: 900px) {
    .section { padding: 4rem 1.25rem; column-gap: 12px; }
    .manuscript-nav { display: none; }
    .hero-stack,
    .hero-copy,
    .document-fan,
    .apparatus-wrap,
    .dark-vitrine,
    .colophon { grid-column: 1 / -1; }
    .hero-copy { padding: 2rem; }
    .document-fan { min-height: 38rem; }
    .card-two { left: 1rem; }
    .card-three { left: 0.3rem; }
    .margin-cluster,
    .apparatus-margin,
    .hero-meta { display: none; }
    .apparatus-wrap { display: block; }
    .pull-quote { float: none; width: auto; margin: 2rem 0; }
    .record-panel .mono-kicker,
    .record-panel h2,
    .record-log { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
    .command-section { min-height: 100vh; }
    .hero-stack { height: 25rem; }
    .provenance-card { padding: 1.45rem; }
    .card-two { top: 10rem; }
    .card-three { top: 21rem; }
    .dark-vitrine { min-height: auto; padding: 1.4rem; }
}