/* ==========================================================================
   economic.wiki — A 1920s Academic Library, Dreaming in Slow Motion
   Art Deco geometry · aged paper · typewriter marginalia
   Intersection Observer (fire once per element) (NOT parallax): Intersection Observer fades and typewriter effects instead; Intersection Observer to track which section is active. On mobile (< 768px).
   ========================================================================== */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --c-amber:        #C76F30;  /* Deco Amber — primary accent */
    --c-sienna:       #A0522D;  /* Burnt Sienna — secondary */
    --c-parchment:    #F5ECD7;  /* Aged Parchment — page */
    --c-cream:        #EDE0C8;  /* Foxed Cream — surface */
    --c-walnut:       #2C1810;  /* Library Walnut — body text */
    --c-gold:         #D4A853;  /* Gilt Gold — ornaments */
    --c-sage:         #8B9A7E;  /* Dusty Sage — marginalia */
    --c-midnight:     #1A1412;  /* Midnight Spine — deep */
    --c-parchment-2:  #E8D5B8;  /* Vignette edge */

    --sidebar-w: 240px;
    --gutter: 40px;
    --max-read: 680px;

    --f-display: 'Poiret One', 'Inter', serif;
    --f-body: 'Nunito', 'Inter', system-ui, sans-serif;
    --f-type: 'Special Elite', 'Inter', monospace;
}

html { scroll-behavior: smooth; }

body {
    min-height: 100vh;
    font-family: var(--f-body);
    font-weight: 400;
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    line-height: 1.75;
    color: var(--c-walnut);
    background-color: var(--c-parchment);
    background-image:
        radial-gradient(ellipse at 20% 50%, rgba(139, 90, 43, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(139, 90, 43, 0.04) 0%, transparent 40%),
        radial-gradient(ellipse at 60% 80%, rgba(139, 90, 43, 0.05) 0%, transparent 45%),
        radial-gradient(ellipse at 15% 90%, rgba(139, 90, 43, 0.05) 0%, transparent 40%),
        radial-gradient(ellipse at center, var(--c-parchment) 40%, var(--c-parchment-2) 100%);
    overflow-x: hidden;
    position: relative;
}

/* Deep vignette on the far edges */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse at center, transparent 55%, rgba(44, 24, 16, 0.18) 100%);
    z-index: 1;
}

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

/* Paper grain — delicate feTurbulence overlay */
.paper-grain {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
    opacity: 0.35;
    mix-blend-mode: multiply;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' seed='5'/><feColorMatrix values='0 0 0 0 0.5 0 0 0 0 0.32 0 0 0 0 0.12 0 0 0 0.12 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* Dust motes */
.dust-motes {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 3;
    overflow: hidden;
}
.dust-motes .mote {
    position: absolute;
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212, 168, 83, 0.85), rgba(212, 168, 83, 0));
    opacity: 0;
    filter: blur(0.4px);
}

/* ---------- Sidebar ---------- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-w);
    height: 100vh;
    background: var(--c-cream);
    background-image:
        radial-gradient(ellipse at 90% 10%, rgba(139, 90, 43, 0.05), transparent 50%),
        radial-gradient(ellipse at 10% 90%, rgba(139, 90, 43, 0.05), transparent 50%);
    border-right: 1px solid var(--c-gold);
    z-index: 30;
    overflow-y: auto;
    overflow-x: hidden;
    transition: transform 0.5s cubic-bezier(.7,.1,.2,1);
}

/* Torn right edge — stacked clip-paths and a subtle fade */
.sidebar::after {
    content: "";
    position: absolute;
    top: 0; right: -1px;
    width: 14px; height: 100%;
    background-image:
        linear-gradient(90deg, transparent, rgba(139, 90, 43, 0.12));
    pointer-events: none;
    clip-path: polygon(
        0 0, 50% 1%, 20% 3%, 70% 5%, 30% 7%, 80% 10%, 25% 13%, 70% 16%, 20% 19%,
        75% 22%, 30% 25%, 80% 28%, 20% 31%, 70% 34%, 35% 37%, 80% 40%, 25% 43%,
        75% 46%, 30% 49%, 70% 52%, 25% 55%, 80% 58%, 20% 61%, 75% 64%, 30% 67%,
        80% 70%, 25% 73%, 70% 76%, 35% 79%, 80% 82%, 20% 85%, 75% 88%, 30% 91%,
        70% 94%, 25% 97%, 50% 99%,
        0 100%
    );
}

/* Vertical gold spine line */
.sidebar::before {
    content: "";
    position: absolute;
    top: 24px; bottom: 24px;
    right: 12px;
    width: 1px;
    background: var(--c-gold);
    opacity: 0.7;
    z-index: 2;
}

.sidebar-inner {
    padding: 36px 26px 36px 30px;
    position: relative;
    z-index: 1;
}

.sidebar-header {
    text-align: center;
    padding-bottom: 22px;
    border-bottom: 1px dashed rgba(199, 111, 48, 0.4);
    margin-bottom: 24px;
}
.spine-ornament { margin-bottom: 12px; display: flex; justify-content: center; }
.sidebar-title {
    font-family: var(--f-display);
    font-size: 1.4rem;
    letter-spacing: 0.10em;
    text-transform: uppercase;
    color: var(--c-walnut);
    line-height: 1.2;
}
.sidebar-title .dot { color: var(--c-amber); }
.sidebar-sub {
    font-family: var(--f-type);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    color: var(--c-sienna);
    margin-top: 6px;
}

.sidebar-nav {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.sidebar-nav li { position: relative; }
.sidebar-nav a {
    display: block;
    padding: 9px 10px 9px 14px;
    font-family: var(--f-type);
    font-size: 0.86rem;
    letter-spacing: 0.04em;
    color: rgba(44, 24, 16, 0.72);
    text-decoration: none;
    border-left: 3px solid transparent;
    transition: color 0.3s ease, border-color 0.3s ease,
                background 0.3s ease, text-shadow 0.4s ease;
    position: relative;
}
.sidebar-nav a .num {
    display: inline-block;
    width: 26px;
    color: var(--c-sienna);
    font-style: italic;
}
.sidebar-nav a:hover {
    color: var(--c-amber);
    background: rgba(212, 168, 83, 0.10);
    border-left-color: rgba(199, 111, 48, 0.45);
}
.sidebar-nav a.active {
    color: var(--c-amber);
    border-left-color: var(--c-amber);
    background: linear-gradient(90deg, rgba(212, 168, 83, 0.25), transparent 85%);
    text-shadow: 0 0 12px rgba(212, 168, 83, 0.6);
}
.sidebar-nav a.active::after {
    content: "";
    position: absolute;
    right: 8px; top: 50%; transform: translateY(-50%);
    width: 5px; height: 5px;
    background: var(--c-amber);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--c-amber);
}

.sidebar-footer {
    margin-top: 34px;
    padding-top: 18px;
    text-align: center;
}
.mini-divider { margin-bottom: 10px; display: flex; justify-content: center; }
.sidebar-footnote {
    font-family: var(--f-type);
    font-size: 0.7rem;
    color: var(--c-sage);
    line-height: 1.6;
    letter-spacing: 0.03em;
}

/* ---------- Hamburger (mobile) ---------- */
.menu-toggle {
    display: none;
    position: fixed;
    top: 14px; left: 14px;
    width: 46px; height: 46px;
    background: var(--c-cream);
    border: 1px solid var(--c-gold);
    cursor: pointer;
    z-index: 50;
    padding: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}
.menu-toggle span {
    display: block;
    width: 22px; height: 1.5px;
    background: var(--c-amber);
    transition: transform 0.3s ease, opacity 0.3s ease;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- Main / Reading Room ---------- */
.reading-room {
    margin-left: var(--sidebar-w);
    padding: 0 48px 0 calc(var(--gutter) + 20px);
    position: relative;
    z-index: 5;
}

/* Marginalia strip — floating column */
.marginalia-strip {
    position: absolute;
    top: 0; left: 0;
    width: var(--gutter);
    height: 100%;
    pointer-events: none;
}
.margin-note {
    position: absolute;
    left: -6px;
    width: 170px;
    font-family: var(--f-type);
    font-size: 0.76rem;
    line-height: 1.6;
    color: var(--c-sage);
    letter-spacing: 0.03em;
    padding: 8px 10px;
    opacity: 0;
    transform: translateX(-18px) rotate(-1.5deg);
    transition: opacity 1.2s ease, transform 1.2s ease;
}
.margin-note.visible {
    opacity: 0.92;
    transform: translateX(0) rotate(-1.5deg);
}
.margin-note .cite { display: block; color: var(--c-sienna); font-style: italic; margin-top: 3px; }
.margin-note em, .margin-note i { color: var(--c-sienna); }
.margin-icon { display: block; margin-bottom: 4px; }

/* ---------- Sections ---------- */
.section {
    position: relative;
    max-width: var(--max-read);
    margin: 0 auto;
    padding: 100px 0 80px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.9s ease, transform 0.9s ease;
}
.section.visible { opacity: 1; transform: translateY(0); }

.chapter-watermark {
    position: absolute;
    top: 40px;
    left: -30px;
    font-family: var(--f-display);
    font-size: clamp(5rem, 11vw, 10rem);
    color: var(--c-gold);
    opacity: 0.15;
    line-height: 0.8;
    letter-spacing: 0.04em;
    pointer-events: none;
    user-select: none;
    z-index: 0;
}
.chapter-watermark.light { opacity: 0.08; color: var(--c-gold); }

/* ---------- Frontispiece / Hero ---------- */
.frontispiece {
    min-height: 100vh;
    max-width: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.deco-frame {
    width: min(900px, 94%);
    padding: 56px clamp(24px, 5vw, 72px);
    position: relative;
    background:
        linear-gradient(
            135deg,
            rgba(237, 224, 200, 0.35) 0%,
            rgba(245, 236, 215, 0.2) 50%,
            rgba(232, 213, 184, 0.35) 100%
        );
    border: 1px solid rgba(212, 168, 83, 0.55);
    box-shadow:
        0 0 0 8px var(--c-parchment),
        0 0 0 9px rgba(212, 168, 83, 0.45),
        0 20px 60px rgba(44, 24, 16, 0.15);
}

/* Deco corner ornaments — stepped pyramids */
.corner {
    position: absolute;
    width: 44px; height: 44px;
    pointer-events: none;
}
.corner::before, .corner::after {
    content: "";
    position: absolute;
    background: var(--c-gold);
}
.corner::before { width: 44px; height: 1px; }
.corner::after  { width: 1px; height: 44px; }
.corner.tl { top: -1px; left: -1px; }
.corner.tl::before { top: 0; left: 0; }
.corner.tl::after  { top: 0; left: 0; }
.corner.tr { top: -1px; right: -1px; }
.corner.tr::before { top: 0; right: 0; }
.corner.tr::after  { top: 0; right: 0; }
.corner.bl { bottom: -1px; left: -1px; }
.corner.bl::before { bottom: 0; left: 0; }
.corner.bl::after  { bottom: 0; left: 0; }
.corner.br { bottom: -1px; right: -1px; }
.corner.br::before { bottom: 0; right: 0; }
.corner.br::after  { bottom: 0; right: 0; }

/* Sunburst ornaments top & bottom — conic gradient */
.sunburst-top, .sunburst-bottom {
    position: absolute;
    left: 50%;
    width: 140px; height: 20px;
    transform: translateX(-50%);
    opacity: 0.85;
    pointer-events: none;
    background:
        conic-gradient(
            from 90deg at 50% 100%,
            transparent 0deg,
            var(--c-gold) 2deg, transparent 6deg,
            var(--c-gold) 12deg, transparent 16deg,
            var(--c-gold) 22deg, transparent 26deg,
            var(--c-gold) 32deg, transparent 36deg,
            var(--c-gold) 42deg, transparent 46deg,
            var(--c-gold) 52deg, transparent 56deg,
            var(--c-gold) 62deg, transparent 66deg,
            var(--c-gold) 72deg, transparent 76deg,
            var(--c-gold) 82deg, transparent 86deg,
            var(--c-gold) 92deg, transparent 96deg,
            var(--c-gold) 102deg, transparent 106deg,
            var(--c-gold) 112deg, transparent 116deg,
            var(--c-gold) 122deg, transparent 126deg,
            var(--c-gold) 132deg, transparent 136deg,
            var(--c-gold) 142deg, transparent 146deg,
            var(--c-gold) 152deg, transparent 156deg,
            var(--c-gold) 162deg, transparent 166deg,
            var(--c-gold) 172deg, transparent 176deg,
            transparent 180deg
        );
}
.sunburst-top { top: -10px; }
.sunburst-bottom { bottom: -10px; transform: translateX(-50%) rotate(180deg); }

.frontispiece-inner { position: relative; text-align: center; z-index: 2; }

.eyebrow {
    font-family: var(--f-type);
    font-size: 0.78rem;
    letter-spacing: 0.24em;
    color: var(--c-sienna);
    text-transform: uppercase;
    margin-bottom: 22px;
}

.hero-title {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: clamp(2.5rem, 6vw, 5rem);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--c-walnut);
    line-height: 1.05;
    margin: 0 0 26px;
    min-height: 1.1em;
}

.hero-divider { display: flex; justify-content: center; margin: 18px 0 28px; }

.hero-subtitle {
    max-width: 620px;
    margin: 0 auto 34px;
    font-size: clamp(1rem, 1.5vw, 1.12rem);
    font-style: italic;
    color: var(--c-walnut);
    opacity: 0.88;
    line-height: 1.8;
}

.hero-ornament {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin: 28px 0 18px;
    color: var(--c-gold);
    font-size: 1.3rem;
}
.hero-ornament .orn-line {
    flex: 0 0 60px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-gold), transparent);
}
.hero-ornament .orn-char { color: var(--c-amber); }

.hero-scroll-hint {
    font-family: var(--f-type);
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    color: var(--c-sage);
    margin-top: 26px;
    animation: driftDown 2.8s ease-in-out infinite;
}

@keyframes driftDown {
    0%, 100% { transform: translateY(0); opacity: 0.6; }
    50%      { transform: translateY(6px); opacity: 1; }
}

/* ---------- Chapter Sections ---------- */
.chapter { }

.chapter-header { margin-bottom: 44px; position: relative; z-index: 1; }
.chapter-header.centered { text-align: center; }
.chapter-header.centered .deco-divider { justify-content: center; }

.chapter-label {
    font-family: var(--f-type);
    font-size: 0.82rem;
    letter-spacing: 0.18em;
    color: var(--c-sienna);
    text-transform: uppercase;
    margin-bottom: 14px;
    min-height: 1em;
}

.chapter-title {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: clamp(2rem, 4.2vw, 3.2rem);
    letter-spacing: 0.08em;
    color: var(--c-walnut);
    line-height: 1.15;
    margin-bottom: 18px;
    min-height: 1.1em;
}

.deco-divider {
    margin: 18px 0 0;
    display: flex;
}

.chapter-body {
    position: relative;
    z-index: 1;
}

/* Drop cap */
.section-text.dropcap::first-letter {
    float: left;
    font-family: var(--f-display);
    font-size: 4.2em;
    line-height: 0.82;
    margin: 0.08em 0.18em 0 0;
    padding: 0.06em 0.16em;
    color: var(--c-amber);
    border: 1px solid var(--c-gold);
    background:
        linear-gradient(135deg, rgba(212, 168, 83, 0.08), transparent 60%);
    clip-path: polygon(
        8% 0, 92% 0, 100% 8%, 100% 92%, 92% 100%, 8% 100%, 0 92%, 0 8%
    );
}

.section-text {
    margin-bottom: 1.6em;
    text-align: justify;
    hyphens: auto;
}
.section-text em { color: var(--c-sienna); font-style: italic; }

/* Pull quote */
.pullquote {
    position: relative;
    margin: 48px 0 36px;
    padding: 28px 38px 28px 48px;
    font-family: var(--f-display);
    font-size: clamp(1.15rem, 2vw, 1.5rem);
    line-height: 1.55;
    color: var(--c-walnut);
    letter-spacing: 0.02em;
    background: rgba(237, 224, 200, 0.35);
    border-left: 3px solid var(--c-amber);
    border-right: 1px solid rgba(212, 168, 83, 0.4);
    box-shadow:
        inset 0 0 0 1px rgba(199, 111, 48, 0.12),
        0 6px 20px rgba(44, 24, 16, 0.07);
}
.pullquote .quote-mark {
    position: absolute;
    font-family: var(--f-display);
    font-size: 3.4rem;
    color: var(--c-gold);
    line-height: 1;
}
.pullquote .quote-mark.left  { top: 8px; left: 12px; }
.pullquote .quote-mark.right { bottom: 6px; right: 14px; }
.pullquote cite {
    display: block;
    margin-top: 18px;
    font-family: var(--f-type);
    font-style: normal;
    font-size: 0.86rem;
    color: var(--c-sienna);
    letter-spacing: 0.04em;
}

/* Scholarly list */
.scholarly-list {
    list-style: none;
    margin-top: 30px;
    display: grid;
    gap: 22px;
}
.scholarly-list li {
    display: grid;
    grid-template-columns: 56px 1fr;
    align-items: start;
    padding: 14px 16px;
    background: rgba(237, 224, 200, 0.28);
    border: 1px solid rgba(212, 168, 83, 0.35);
    border-left: 3px solid var(--c-amber);
    position: relative;
}
.scholarly-list .list-glyph {
    font-family: var(--f-display);
    font-size: 1.8rem;
    color: var(--c-amber);
    letter-spacing: 0.04em;
    line-height: 1;
}
.scholarly-list .tenet {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: 1.25rem;
    letter-spacing: 0.06em;
    color: var(--c-walnut);
    margin-bottom: 6px;
}
.scholarly-list p {
    font-family: var(--f-body);
    font-size: 0.98rem;
    color: var(--c-walnut);
    opacity: 0.88;
    line-height: 1.6;
}

/* Folio stack (chapter cards) */
.folio-stack {
    display: grid;
    gap: 30px;
    margin-top: 30px;
}
.folio {
    position: relative;
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 22px;
    padding: 26px 28px 26px 24px;
    background:
        linear-gradient(135deg, rgba(237, 224, 200, 0.55), rgba(245, 236, 215, 0.3));
    border: 1px solid rgba(212, 168, 83, 0.45);
    transition: transform 0.5s ease, box-shadow 0.5s ease, border-color 0.5s ease;
}
.folio::before {
    content: "";
    position: absolute;
    inset: 4px;
    border: 1px dashed rgba(199, 111, 48, 0.18);
    pointer-events: none;
}
.folio:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(44, 24, 16, 0.14);
    border-color: var(--c-amber);
}
.folio-num {
    font-family: var(--f-display);
    font-size: 3.4rem;
    color: var(--c-amber);
    letter-spacing: 0.04em;
    line-height: 1;
    align-self: start;
    padding-top: 4px;
    text-shadow: 1px 1px 0 rgba(212, 168, 83, 0.2);
}
.folio-body {}
.folio-date {
    font-family: var(--f-type);
    font-size: 0.76rem;
    letter-spacing: 0.18em;
    color: var(--c-sienna);
    margin-bottom: 6px;
}
.folio-title {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: 1.55rem;
    letter-spacing: 0.05em;
    color: var(--c-walnut);
    margin-bottom: 10px;
    line-height: 1.2;
}
.folio-text {
    font-size: 0.98rem;
    line-height: 1.65;
    color: var(--c-walnut);
    opacity: 0.88;
    margin-bottom: 14px;
}
.folio-tag {
    display: inline-block;
    font-family: var(--f-type);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--c-sienna);
    padding: 3px 10px;
    margin-right: 6px;
    border: 1px solid rgba(199, 111, 48, 0.4);
    text-transform: lowercase;
}

/* Marginalia sample cards */
.marginalia-sample {
    display: grid;
    gap: 20px;
    margin-top: 30px;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.note-card {
    padding: 18px 22px;
    background: rgba(237, 224, 200, 0.45);
    border: 1px dashed rgba(199, 111, 48, 0.5);
    position: relative;
    transform: rotate(-0.5deg);
}
.note-card:nth-child(2) { transform: rotate(0.7deg); }
.note-card:nth-child(3) { transform: rotate(-0.3deg); }
.note-card:nth-child(4) { transform: rotate(0.5deg); }
.note-label {
    display: inline-block;
    font-family: var(--f-type);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    color: var(--c-amber);
    text-transform: uppercase;
    margin-bottom: 6px;
}
.note-card p {
    font-family: var(--f-type);
    font-size: 0.86rem;
    line-height: 1.7;
    color: var(--c-walnut);
    letter-spacing: 0.02em;
}
.note-card b { color: var(--c-sienna); }

/* Calling Card */
.calling-card {
    position: relative;
    max-width: 480px;
    margin: 44px auto 10px;
    padding: 36px 28px;
    text-align: center;
    background:
        linear-gradient(180deg, var(--c-cream), rgba(237, 224, 200, 0.85));
    border: 1px solid var(--c-gold);
    box-shadow:
        0 0 0 6px var(--c-parchment),
        0 0 0 7px rgba(212, 168, 83, 0.35),
        0 18px 40px rgba(44, 24, 16, 0.18);
}
.calling-card .card-corner {
    position: absolute;
    width: 22px; height: 22px;
    border: 1px solid var(--c-amber);
}
.calling-card .card-corner.tl { top: 10px; left: 10px; border-right: none; border-bottom: none; }
.calling-card .card-corner.tr { top: 10px; right: 10px; border-left: none; border-bottom: none; }
.calling-card .card-corner.bl { bottom: 10px; left: 10px; border-right: none; border-top: none; }
.calling-card .card-corner.br { bottom: 10px; right: 10px; border-left: none; border-top: none; }
.calling-card .card-line {
    font-family: var(--f-type);
    font-size: 0.86rem;
    letter-spacing: 0.08em;
    color: var(--c-sienna);
    margin: 6px 0;
}
.calling-card .card-line.small { font-size: 0.76rem; }
.calling-card .card-line.tiny  { font-size: 0.72rem; color: var(--c-sage); }
.calling-card .card-addr {
    font-family: var(--f-display);
    font-size: 1.65rem;
    letter-spacing: 0.1em;
    color: var(--c-walnut);
    text-transform: uppercase;
    margin: 10px 0;
}
.calling-card .card-divider {
    display: flex;
    justify-content: center;
    margin: 14px 0 12px;
}

/* ---------- Appendix (footer) ---------- */
.appendix {
    position: relative;
    max-width: none;
    margin-top: 80px;
    padding: 100px 0 60px;
    background: var(--c-midnight);
    color: var(--c-cream);
    overflow: hidden;
    margin-left: calc(-1 * (var(--gutter) + 20px));
    margin-right: -48px;
}
.appendix .chapter-watermark { color: var(--c-gold); opacity: 0.10; }
.appendix .chapter-title { color: var(--c-parchment); }
.appendix .chapter-label { color: var(--c-gold); }
.appendix-pattern {
    position: absolute;
    inset: 0;
    opacity: 0.28;
    background-image:
        repeating-linear-gradient(
            45deg,
            transparent 0, transparent 24px,
            rgba(212, 168, 83, 0.18) 24px, rgba(212, 168, 83, 0.18) 25px,
            transparent 25px, transparent 48px
        ),
        repeating-linear-gradient(
            -45deg,
            transparent 0, transparent 24px,
            rgba(199, 111, 48, 0.15) 24px, rgba(199, 111, 48, 0.15) 25px,
            transparent 25px, transparent 48px
        );
    pointer-events: none;
}
.appendix-inner {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 48px;
    z-index: 1;
}
.appendix-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 40px;
    margin-top: 44px;
}
.index-title {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: 1.1rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--c-gold);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(212, 168, 83, 0.35);
}
.index-col ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.index-col li {
    font-family: var(--f-type);
    font-size: 0.82rem;
    letter-spacing: 0.04em;
    color: var(--c-cream);
    opacity: 0.82;
}
.index-col a {
    color: var(--c-cream);
    text-decoration: none;
    border-bottom: 1px dotted transparent;
    transition: color 0.3s ease, border-color 0.3s ease;
}
.index-col a:hover {
    color: var(--c-gold);
    border-bottom-color: var(--c-gold);
}
.colophon {
    margin-top: 60px;
    padding-top: 24px;
    border-top: 1px solid rgba(212, 168, 83, 0.3);
    text-align: center;
    font-family: var(--f-type);
    font-size: 0.76rem;
    letter-spacing: 0.1em;
    color: rgba(237, 224, 200, 0.6);
}

/* ---------- Typewriter Cursor ---------- */
.tw-cursor {
    display: inline-block;
    width: 2px;
    height: 0.9em;
    background: var(--c-amber);
    margin-left: 2px;
    vertical-align: -0.08em;
    animation: twBlink 0.9s step-end infinite;
    box-shadow: 0 0 6px rgba(199, 111, 48, 0.7);
}
.tw-cursor.tw-done { animation: twFadeOut 1.6s ease forwards; }
@keyframes twBlink {
    0%, 50%   { opacity: 1; }
    51%, 100% { opacity: 0; }
}
@keyframes twFadeOut {
    0%   { opacity: 1; }
    100% { opacity: 0; }
}
.typewrite { visibility: hidden; }
.typewrite.tw-active { visibility: visible; }

/* ---------- Reading Lamp (amber cursor-follow glow) ---------- */
.reading-lamp {
    position: fixed;
    top: 0; left: 0;
    width: 420px; height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212, 168, 83, 0.14), rgba(212, 168, 83, 0) 70%);
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 2;
    transition: opacity 0.6s ease;
    mix-blend-mode: multiply;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
    .reading-room { padding: 0 32px 0 calc(var(--gutter) + 10px); }
    .chapter-watermark { left: -18px; }
}

@media (max-width: 768px) {
    .menu-toggle { display: flex; }
    .sidebar {
        transform: translateX(-100%);
        width: 280px;
        box-shadow: 4px 0 30px rgba(44, 24, 16, 0.35);
    }
    .sidebar.open { transform: translateX(0); }
    .reading-room {
        margin-left: 0;
        padding: 0 22px;
    }
    .appendix {
        margin-left: -22px;
        margin-right: -22px;
    }
    .marginalia-strip { display: none; }
    .chapter-watermark {
        left: -4px;
        font-size: clamp(4rem, 22vw, 7rem);
        opacity: 0.12;
    }
    .section { padding: 70px 0 50px; }
    .deco-frame { padding: 42px 22px; }
    .folio { grid-template-columns: 56px 1fr; gap: 14px; padding: 20px 18px; }
    .folio-num { font-size: 2.4rem; }
    .pullquote { padding: 22px 26px 22px 32px; }
    .reading-lamp { display: none; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2.1rem; }
    .hero-subtitle { font-size: 0.98rem; }
    .section-text.dropcap::first-letter { font-size: 3.4em; }
    .appendix-inner { padding: 0 22px; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .section { opacity: 1; transform: none; transition: none; }
    .margin-note { opacity: 0.9; transform: rotate(-1.5deg); transition: none; }
    .hero-scroll-hint { animation: none; }
    .dust-motes { display: none; }
}