/* ============================================================
   GT // FY26 — Animated Impact Report
   Scroll-driven hero (black) → 5-chapter impact report (light)
   ============================================================ */

:root {
    --color-bg:         #FFFFFF;
    --color-primary:    #2D2D2D;
    --color-secondary:  #A32D00;
    --color-body:       #4B4B4B;
    --color-accent:     #D04A02;
    --color-muted:      #EB8C00;
    --color-light:      #FFE4D0;
    --color-lightest:   #FFF7F0;
    --color-button-text:#FFFFFF;

    --color-dark-bg:    #000000;
    --color-dark-text:  #FFF7F0;
    --color-dark-dim:   rgba(255, 247, 240, 0.62);
    --color-dark-faint: rgba(255, 247, 240, 0.22);

    --font-main: "IBM Plex Mono", "Courier Prime", "Courier New", monospace;

    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --space-2xl: 8rem;

    --max-width: 1100px;
    --nav-height: 64px;

    --shadow-sm: 0 1px 3px rgba(45, 45, 45, 0.06);
    --shadow-md: 0 4px 12px rgba(45, 45, 45, 0.10);
    --shadow-lg: 0 8px 24px rgba(45, 45, 45, 0.14);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* ============================================================
   1. Reset + Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: auto; /* Lenis handles smooth scroll */
    scroll-padding-top: var(--nav-height);
}

html, body { height: auto; }

body {
    font-family: var(--font-main);
    font-size: 15px;
    line-height: 1.75;
    background: var(--color-dark-bg); /* starts black for hero; fades to light at ~86% */
    color: var(--color-dark-text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    overscroll-behavior: none;
}

img { max-width: 100%; display: block; }

::selection { background: var(--color-accent); color: #fff; }

a { color: inherit; text-decoration: none; }

/* ============================================================
   2. Loader
   ============================================================ */
#loader {
    position: fixed; inset: 0;
    background: #000;
    z-index: 9999;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 1.5rem;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

#loader.hidden {
    opacity: 0; visibility: hidden; pointer-events: none;
}

.loader-brand {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--color-accent);
    text-transform: uppercase;
}

.loader-bar-track {
    width: min(320px, 60vw);
    height: 2px;
    background: rgba(255, 247, 240, 0.12);
    overflow: hidden;
}

#loader-bar {
    height: 100%;
    width: 0%;
    background: var(--color-accent);
    transition: width 0.15s linear;
}

#loader-percent {
    font-size: 0.7rem;
    color: var(--color-dark-dim);
    letter-spacing: 0.2em;
}

/* ============================================================
   3. Nav (fixed — adaptive dark→light)
   ============================================================ */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-height);
    z-index: 1000;
    background: rgba(0, 0, 0, 0.40);
    backdrop-filter: blur(14px) saturate(1.2);
    -webkit-backdrop-filter: blur(14px) saturate(1.2);
    border-bottom: 1px solid rgba(255, 247, 240, 0.06);
    transition: background 0.4s ease, border-color 0.4s ease, color 0.4s ease;
}

.site-header.on-light {
    background: rgba(255, 255, 255, 0.88);
    border-bottom-color: var(--color-light);
    box-shadow: 0 1px 8px rgba(45, 45, 45, 0.06);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    align-items: center;
    height: 100%;
    gap: var(--space-sm);
}

.nav-logo {
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: 0.12em;
    color: var(--color-dark-text);
    flex-shrink: 0;
    padding-right: var(--space-sm);
    border-right: 2px solid rgba(208, 74, 2, 0.5);
    transition: color 0.4s ease, border-color 0.4s ease;
}
.site-header.on-light .nav-logo {
    color: var(--color-primary);
    border-right-color: var(--color-light);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0;
    flex: 1;
    overflow-x: auto;
    scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }

.nav-link {
    display: block;
    padding: var(--space-xs) 0.75rem;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--color-dark-dim);
    text-transform: uppercase;
    letter-spacing: 0.09em;
    white-space: nowrap;
    position: relative;
    transition: color 0.25s ease;
}
.site-header.on-light .nav-link { color: var(--color-body); }

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0.75rem; right: 0.75rem;
    height: 2px;
    background: var(--color-accent);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}
.nav-link:hover { color: var(--color-dark-text); }
.site-header.on-light .nav-link:hover { color: var(--color-primary); }
.nav-link.active { color: var(--color-dark-text); font-weight: 700; }
.site-header.on-light .nav-link.active { color: var(--color-primary); }
.nav-link.active::after { transform: scaleX(1); }

.nav-meta {
    font-size: 0.64rem;
    color: var(--color-dark-faint);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    white-space: nowrap;
    padding-left: var(--space-sm);
    border-left: 1px solid rgba(255,247,240,0.12);
    transition: color 0.4s, border-color 0.4s;
}
.site-header.on-light .nav-meta {
    color: var(--color-body);
    border-left-color: var(--color-light);
}

/* ============================================================
   4. HERO (standalone, 100vh, black — pre-scroll)
   ============================================================ */
.hero-standalone {
    position: relative;
    height: 100vh;
    width: 100%;
    padding: var(--nav-height) 0 0;
    background: var(--color-dark-bg);
    overflow: hidden;
    z-index: 2;
}

.hero-inner {
    position: absolute;
    inset: 0;
    padding: calc(var(--nav-height) + 1rem) 5vw 5rem 5vw;
    display: flex;
    flex-direction: column;
    justify-content: safe center;
    max-width: 52vw;
    min-width: 0;
    z-index: 2;
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.68rem;
    letter-spacing: 0.28em;
    color: var(--color-accent);
    text-transform: uppercase;
    margin-bottom: 2rem;
    font-weight: 500;
}
.hero-label::before {
    content: '';
    display: inline-block;
    width: 28px; height: 1px;
    background: var(--color-accent);
}

.hero-heading {
    font-size: clamp(2.2rem, 4.8vw, 4.6rem);
    font-weight: 700;
    line-height: 1.04;
    letter-spacing: -0.03em;
    color: var(--color-dark-text);
    margin-bottom: 2.2rem;
}
.hero-heading .line {
    display: block;
    overflow: hidden;
}
.hero-heading .word {
    display: inline-block;
    color: var(--color-dark-text);
}
.hero-heading .word.accent { color: var(--color-accent); }
.hero-heading .word.muted  { color: var(--color-muted); }

.hero-tagline {
    font-size: 1.02rem;
    color: var(--color-dark-dim);
    line-height: 1.7;
    max-width: 34rem;
    margin-bottom: 2.5rem;
    font-weight: 300;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.7rem;
    color: var(--color-dark-faint);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-bottom: 3rem;
}
.hero-meta .sep { color: var(--color-accent); }

.hero-scroll-indicator {
    position: absolute;
    bottom: 1rem;
    left: 5vw;
    display: flex;
    align-items: center;
    gap: 0.9rem;
    font-size: 0.66rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--color-dark-dim);
}
.hero-scroll-indicator .arrow {
    display: inline-block;
    width: 40px; height: 1px;
    background: var(--color-dark-dim);
    position: relative;
    animation: arrowPulse 2.2s ease-in-out infinite;
}
.hero-scroll-indicator .arrow::after {
    content: '';
    position: absolute;
    right: 0; top: -3px;
    width: 7px; height: 7px;
    border-right: 1px solid var(--color-dark-dim);
    border-bottom: 1px solid var(--color-dark-dim);
    transform: rotate(-45deg);
}
@keyframes arrowPulse {
    0%, 100% { transform: translateX(0); opacity: 0.5; }
    50% { transform: translateX(10px); opacity: 1; }
}

/* Frame one preview behind hero text (subtle, right 2/3) */
.hero-preview-fade {
    position: absolute;
    top: 0; right: 0;
    width: 66%; height: 100%;
    background: linear-gradient(90deg,
        #000 0%,
        rgba(0,0,0,0.92) 22%,
        rgba(0,0,0,0.80) 100%);
    pointer-events: none;
    z-index: 1;
}

/* ============================================================
   5. Canvas + Overlays (fixed during scroll container)
   ============================================================ */
.canvas-wrap {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    clip-path: circle(0% at 50% 50%);
    will-change: clip-path, opacity;
}
#canvas {
    display: block;
    width: 100%;
    height: 100%;
    background: #000;
}

#dark-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.88);
    z-index: 3;
    pointer-events: none;
    opacity: 0;
    will-change: opacity;
}

.marquee-wrap {
    position: fixed;
    top: 42%;
    left: 0; right: 0;
    z-index: 4;
    pointer-events: none;
    opacity: 0;
    overflow: hidden;
    will-change: opacity;
}

.marquee-text {
    font-size: 14vw;
    line-height: 1;
    font-weight: 700;
    letter-spacing: -0.04em;
    white-space: nowrap;
    color: var(--color-accent);
    text-transform: uppercase;
    will-change: transform;
}
.marquee-text .dot {
    color: var(--color-muted);
    margin: 0 0.25em;
}

/* ============================================================
   6. Scroll container + sections
   ============================================================ */
#scroll-container {
    position: relative;
    width: 100%;
    height: 900vh;
    z-index: 5;
    background: transparent;
}

/* Sections are FIXED at viewport center during scroll-container range;
   JS controls which is visible based on scroll progress. */
.scroll-section {
    position: fixed;
    left: 0; right: 0;
    top: 0;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    pointer-events: none;
    z-index: 6;
    opacity: 0;
    visibility: hidden;
}
.scroll-section.is-active {
    visibility: visible;
}

.section-inner {
    width: 100%;
    max-width: 36vw;
    padding: 0 0 0 5vw;
    pointer-events: auto;
}

/* side-aligned zones */
.align-left { padding-right: 58vw; padding-left: 5vw; }
.align-left .section-inner { max-width: 36vw; }

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    font-size: 0.66rem;
    letter-spacing: 0.26em;
    color: var(--color-accent);
    text-transform: uppercase;
    margin-bottom: 1.3rem;
    font-weight: 500;
}
.section-label::before {
    content: '';
    display: inline-block;
    width: 22px; height: 1px;
    background: var(--color-accent);
}

.section-heading {
    font-size: clamp(1.8rem, 3.8vw, 3.6rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.025em;
    color: var(--color-dark-text);
    margin-bottom: 1.3rem;
    overflow-wrap: break-word;
    hyphens: none;
}
.section-heading em {
    color: var(--color-accent);
    font-style: normal;
}

.section-body {
    font-size: 0.98rem;
    color: var(--color-dark-dim);
    line-height: 1.75;
    max-width: 30rem;
    margin-bottom: 1.4rem;
    font-weight: 300;
}

.section-note {
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    color: var(--color-muted);
    text-transform: uppercase;
    line-height: 1.7;
}

.outcomes-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.outcomes-list li {
    font-size: 0.82rem;
    line-height: 1.7;
    color: var(--color-dark-text);
    padding: 0.15rem 0 0.15rem 1.2em;
    position: relative;
}
.outcomes-list li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

/* ============================================================
   7. Stats section (center-OK with dark overlay)
   ============================================================ */
.section-stats {
    padding: 0 6vw;
    align-items: center;
    justify-content: center;
}
.section-stats .section-inner {
    max-width: 92vw;
    padding: 0;
    text-align: center;
}
.stats-label {
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    color: var(--color-accent);
    text-transform: uppercase;
    margin-bottom: 2rem;
    font-weight: 500;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 2rem 3vw;
    max-width: 1400px;
    margin: 0 auto;
}
.stat {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    position: relative;
}
.stat::before {
    content: '';
    position: absolute;
    top: -1rem; left: 50%;
    transform: translateX(-50%);
    width: 28px; height: 2px;
    background: var(--color-accent);
}
.stat-number {
    font-size: clamp(2.4rem, 4.8vw, 4.4rem);
    font-weight: 700;
    color: var(--color-dark-text);
    line-height: 1;
    letter-spacing: -0.03em;
    font-variant-numeric: tabular-nums;
}
.stat-suffix {
    display: inline;
    color: var(--color-dark-dim);
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-left: 0.2rem;
    vertical-align: middle;
}
.stat-label {
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-dark-dim);
    font-weight: 400;
    line-height: 1.5;
}

/* ============================================================
   8. CTA (persist + transition to chapters)
   ============================================================ */
.section-cta {
    padding: 0;
    align-items: center;
}
.section-cta .section-inner {
    max-width: 40vw;
    padding: 0 0 0 5vw;
}
.cta-kicker {
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    color: var(--color-accent);
    text-transform: uppercase;
    margin-bottom: 1rem;
}
.cta-heading {
    font-size: clamp(2.2rem, 4.2vw, 3.8rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.025em;
    color: var(--color-dark-text);
    margin-bottom: 1.4rem;
}
.cta-body {
    font-size: 1rem;
    color: var(--color-dark-dim);
    line-height: 1.7;
    max-width: 32rem;
    margin-bottom: 2rem;
    font-weight: 300;
}
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.9rem;
    padding: 16px 30px 16px 26px;
    background: var(--color-accent);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    border-radius: 2px;
    border: 1px solid var(--color-accent);
    transition: background 0.25s, transform 0.25s, color 0.25s;
    cursor: pointer;
}
.cta-button:hover {
    background: transparent;
    color: var(--color-accent);
    transform: translateX(6px);
}
.cta-button .arrow-r { display: inline-block; transition: transform 0.25s; }
.cta-button:hover .arrow-r { transform: translateX(4px); }

/* ============================================================
   9. Chapters block (light bg, normal flow below scroll-container)
   ============================================================ */
.chapters-block {
    position: relative;
    z-index: 10;
    background: var(--color-bg);
    color: var(--color-body);
}

.chapters-block h1,
.chapters-block h2,
.chapters-block h3,
.chapters-block h4 {
    color: var(--color-primary);
    line-height: 1.3;
}

.chapters-block .container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.chapters-block .section {
    padding: var(--space-2xl) 0;
    position: relative;
}

/* chapter-break divider at top of chapters block */
.chapter-break {
    padding: var(--space-xl) var(--space-md);
    text-align: center;
    background: var(--color-lightest);
    border-bottom: 1px solid var(--color-light);
}
.chapter-break-label {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 0.68rem;
    letter-spacing: 0.26em;
    color: var(--color-accent);
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}
.chapter-break-label::before,
.chapter-break-label::after {
    content: '';
    display: inline-block;
    width: 28px; height: 1px;
    background: var(--color-accent);
}
.chapter-break-title {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    line-height: 1.15;
    max-width: 880px;
    margin: 0 auto;
}

/* Chapters (mirror index3.html) */
.chapter { position: relative; }
.chapter:nth-child(even) { background: var(--color-lightest); }

.chapter-header {
    text-align: center;
    margin-bottom: var(--space-xl);
    position: relative;
}
.chapter-number {
    display: block;
    font-size: 7rem;
    font-weight: 700;
    color: var(--color-light);
    line-height: 1;
    position: absolute;
    top: -1.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 0;
    pointer-events: none;
    user-select: none;
}
.chapter-title {
    position: relative;
    z-index: 1;
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-top: 2rem;
    color: var(--color-primary);
}
.chapter-rule {
    width: 40px;
    height: 3px;
    background: var(--color-accent);
    margin: var(--space-sm) auto 0;
    border: none;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-md);
}

/* Dense 4-column layout for the merged Chapter 1 (8 cards, 4 x 2) */
.cards-grid-4col {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}
.cards-grid-4col .case-card {
    padding: 1.25rem;
}
.cards-grid-4col .case-card-title {
    font-size: 0.98rem;
    line-height: 1.3;
}
.cards-grid-4col .case-card-desc {
    font-size: 0.8rem;
    line-height: 1.6;
}
.cards-grid-4col .case-card-outcomes li {
    font-size: 0.72rem;
    line-height: 1.55;
}

@media (max-width: 1200px) {
    .cards-grid-4col { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .cards-grid-4col { grid-template-columns: 1fr; }
}

.case-card {
    background: var(--color-bg);
    border: 1px solid var(--color-light);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    position: relative;
    transition: transform var(--transition-fast),
                box-shadow var(--transition-fast),
                border-color var(--transition-fast);
    opacity: 0;
    transform: translateY(24px);
}
.case-card.in-view {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s ease,
                box-shadow var(--transition-fast),
                border-color var(--transition-fast);
}
.case-card.in-view[data-delay="100"] { transition-delay: 0.08s; }
.case-card.in-view[data-delay="200"] { transition-delay: 0.16s; }
.case-card.in-view[data-delay="300"] { transition-delay: 0.24s; }
.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-muted);
}
.case-card-badge {
    display: inline-block;
    padding: 3px 10px;
    background: var(--color-accent);
    color: #fff;
    font-size: 0.62rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 20px;
    margin-bottom: var(--space-sm);
}
.case-card-title {
    font-size: 1.08rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: var(--space-xs);
}
.case-card-desc {
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--color-body);
    margin-bottom: var(--space-sm);
}
.case-card-outcomes { list-style: none; padding: 0; }
.case-card-outcomes li {
    font-size: 0.78rem;
    color: var(--color-secondary);
    padding: 4px 0 4px 1.2em;
    position: relative;
}
.case-card-outcomes li::before {
    content: '>';
    position: absolute; left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

/* Footer */
.impact-footer {
    background: var(--color-primary);
    color: #fff;
    padding: var(--space-xl) 0 var(--space-md);
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}
.impact-footer .footer-name,
.chapters-block .impact-footer .footer-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: var(--space-xs);
}
.footer-contact {
    font-size: 0.8rem;
    line-height: 1.8;
    color: var(--color-muted);
}
.footer-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}
.btn {
    display: inline-block;
    padding: 12px 28px;
    font-family: var(--font-main);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-radius: 30px;
    cursor: pointer;
    text-decoration: none;
    border: 2px solid transparent;
    transition: all var(--transition-normal);
}
.btn-primary {
    background: #fff;
    color: var(--color-primary);
    border-color: #fff;
}
.btn-primary:hover {
    background: transparent;
    color: #fff;
    transform: translateY(-2px);
}
.btn-outline {
    background: transparent;
    color: #fff;
    border-color: var(--color-muted);
}
.btn-outline:hover {
    border-color: #fff;
    transform: translateY(-2px);
}
.footer-bottom {
    border-top: 1px solid var(--color-secondary);
    padding-top: var(--space-md);
    text-align: center;
}
.footer-copy {
    font-size: 0.72rem;
    color: var(--color-muted);
    letter-spacing: 0.05em;
}

/* ============================================================
   10. Responsive
   ============================================================ */
@media (max-width: 1100px) {
    .hero-inner { max-width: 48vw; min-width: 0; }
    .align-left { padding-right: 52vw; }
    .align-left .section-inner { max-width: 42vw; }
    .stats-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
    .nav-links { display: none; }
    .nav-meta { display: none; }
    .hero-inner {
        max-width: 100%;
        padding: calc(var(--nav-height) + 1.25rem) 5vw 0;
        justify-content: flex-start;
    }
    .hero-preview-fade {
        width: 100%;
        background: rgba(0,0,0,0.68);
    }
    .align-left {
        padding: 0 5vw;
    }
    .align-left .section-inner {
        max-width: 100%;
        padding: 1.5rem;
        background: rgba(0, 0, 0, 0.72);
        backdrop-filter: blur(6px);
        border-radius: 6px;
    }
    .section-stats .section-inner { max-width: 100%; padding: 1.2rem; }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    .section-cta .section-inner {
        max-width: 100%;
        padding: 1.5rem;
        background: rgba(0, 0, 0, 0.72);
        backdrop-filter: blur(6px);
        border-radius: 6px;
    }
    #scroll-container { height: 700vh; }
    .marquee-text { font-size: 20vw; }

    .chapters-block .cards-grid { grid-template-columns: 1fr; }
    .footer-inner { flex-direction: column; align-items: center; text-align: center; }
    .footer-actions { justify-content: center; }
    .chapter-number { font-size: 5rem; }
}

@media (max-width: 600px) {
    .hero-heading { font-size: clamp(1.8rem, 8vw, 2.6rem); }
    .hero-tagline { font-size: 0.92rem; }
    .section-heading { font-size: clamp(1.6rem, 7vw, 2.4rem); }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 1.25rem; }
    .stat-number { font-size: clamp(2rem, 10vw, 3rem); }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
    .hero-scroll-indicator .arrow { animation: none; }
}

/* ============================================================
   11. Card extensions — quotes, notable users, embed links,
        sub-blocks, screenshot strip + lightbox, narrative coda
   ============================================================ */

/* Card title becomes a link (TSA, Entanglements, PDF→PPT) */
.card-title-link {
    color: var(--color-secondary);
    text-decoration: none;
    border-bottom: 1px dashed transparent;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    display: inline-flex;
    align-items: baseline;
    gap: 0.35rem;
}
.card-title-link:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}
.card-link-icon {
    font-size: 0.78em;
    color: var(--color-accent);
    transition: transform var(--transition-fast);
    display: inline-block;
}
.card-title-link:hover .card-link-icon {
    transform: translate(2px, -2px);
}

/* Inline link inside an outcome list bullet (Viva Engage post) */
.card-inline-link {
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px dashed currentColor;
    transition: color var(--transition-fast);
}
.card-inline-link:hover {
    color: var(--color-secondary);
}

/* "Notable users" line beneath outcomes */
.card-people {
    margin-top: 0.85rem;
    padding-top: 0.7rem;
    border-top: 1px dashed var(--color-light);
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}
.card-people-label {
    font-size: 0.6rem;
    letter-spacing: 0.18em;
    color: var(--color-accent);
    text-transform: uppercase;
    font-weight: 600;
}
.card-people-list {
    font-size: 0.74rem;
    color: var(--color-body);
    line-height: 1.55;
}

/* Anecdotal quote block inside cards */
.card-quote {
    margin-top: 0.85rem;
    padding: 0.7rem 0.9rem;
    background: var(--color-lightest);
    border-left: 3px solid var(--color-accent);
    border-radius: 4px;
    font-size: 0.74rem;
    line-height: 1.55;
    color: var(--color-primary);
    font-style: italic;
}
.card-quote + .card-quote { margin-top: 0.5rem; }
.card-quote cite {
    display: block;
    margin-top: 0.4rem;
    font-style: normal;
    font-size: 0.66rem;
    letter-spacing: 0.1em;
    color: var(--color-secondary);
    text-transform: uppercase;
}

/* Sub-blocks inside merged Phase 0 card */
.card-subblock {
    margin-top: 0.85rem;
    padding-top: 0.7rem;
    border-top: 1px dashed var(--color-light);
}
.card-subblock:first-of-type {
    margin-top: 0.6rem;
    padding-top: 0;
    border-top: none;
}
.card-subtitle {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin: 0 0 0.35rem 0;
    letter-spacing: -0.005em;
}

/* Inline context blurb (DoorDash payroll/census) */
.card-context {
    margin-top: 0.85rem;
    padding: 0.7rem 0.9rem;
    background: rgba(255, 228, 208, 0.35);
    border: 1px solid var(--color-light);
    border-radius: 4px;
    font-size: 0.72rem;
    line-height: 1.6;
    color: var(--color-body);
}
.card-context-label {
    display: block;
    font-size: 0.6rem;
    letter-spacing: 0.16em;
    color: var(--color-accent);
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

/* Footnote (AC / BPSX explainer) */
.card-footnote {
    margin-top: 0.85rem;
    padding-top: 0.7rem;
    border-top: 1px dashed var(--color-light);
    font-size: 0.66rem;
    line-height: 1.55;
    color: var(--color-body);
    font-style: italic;
}

/* Embed link (View Brief / Dashboard / Analysis) */
.card-embed-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.85rem;
    padding: 0.55rem 0.95rem;
    background: var(--color-accent);
    color: #fff !important;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-radius: 999px;
    border: 1px solid var(--color-accent);
    transition: background var(--transition-fast),
                color var(--transition-fast),
                transform var(--transition-fast);
}
.card-embed-link:hover {
    background: transparent;
    color: var(--color-accent) !important;
    transform: translateX(3px);
}

/* Screenshot strip (Vector DB card) */
.case-card-with-gallery { display: flex; flex-direction: column; }
.screenshot-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.4rem;
    margin-top: 0.9rem;
}
.screenshot-thumb {
    border: 1px solid var(--color-light);
    background: var(--color-lightest);
    padding: 0;
    border-radius: 4px;
    cursor: zoom-in;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    transition: transform var(--transition-fast),
                border-color var(--transition-fast),
                box-shadow var(--transition-fast);
}
.screenshot-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top left;
    display: block;
}
.screenshot-thumb:hover {
    transform: translateY(-2px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

/* Lightbox modal */
#lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.90);
    z-index: 9998;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    cursor: zoom-out;
}
#lightbox.is-open { display: flex; }
.lightbox-frame {
    position: relative;
    max-width: min(92vw, 1400px);
    max-height: 86vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    cursor: default;
}
.lightbox-frame img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.5);
    background: #111;
}
.lightbox-caption {
    color: var(--color-light);
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    text-align: center;
}
.lightbox-counter {
    color: var(--color-dark-faint);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}
.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 247, 240, 0.10);
    color: var(--color-dark-text);
    border: 1px solid rgba(255, 247, 240, 0.20);
    border-radius: 999px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-main);
    font-size: 1.05rem;
    cursor: pointer;
    transition: background var(--transition-fast),
                border-color var(--transition-fast);
}
.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
}
.lightbox-close { top: -3rem; right: 0; }
.lightbox-prev { top: 50%; left: -3.5rem; transform: translateY(-50%); }
.lightbox-next { top: 50%; right: -3.5rem; transform: translateY(-50%); }

@media (max-width: 1024px) {
    .lightbox-prev { left: 0.5rem; }
    .lightbox-next { right: 0.5rem; }
    .lightbox-close { top: 0.5rem; right: 0.5rem; }
}
@media (max-width: 600px) {
    .screenshot-strip { grid-template-columns: repeat(3, 1fr); }
}

/* Narrative coda paragraph after Chapter 1 grid */
.chapter-coda {
    margin-top: var(--space-lg);
    padding: 1.5rem 1.75rem;
    background: var(--color-lightest);
    border-left: 4px solid var(--color-accent);
    border-radius: 4px;
}
.chapter-coda p {
    font-size: 0.9rem;
    line-height: 1.75;
    color: var(--color-primary);
    margin: 0;
}
.chapter-coda p + p {
    margin-top: 0.7rem;
    font-size: 0.85rem;
    color: var(--color-body);
    font-style: italic;
}

/* Cards grid — 3-up fixed (Chapter 2) */
.cards-grid-3col-fixed {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
@media (max-width: 1100px) {
    .cards-grid-3col-fixed { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .cards-grid-3col-fixed { grid-template-columns: 1fr; }
}

/* Stats grid — 3-up override */
.stats-grid-3col {
    grid-template-columns: repeat(3, 1fr);
    max-width: 900px;
}
@media (max-width: 900px) {
    .stats-grid-3col { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .stats-grid-3col { grid-template-columns: 1fr; }
}

/* ============================================================
   12. Chapter 6 — Voices from the Field (feedback tiles)
   ============================================================ */
.chapter-feedback-intro {
    max-width: 720px;
    margin: 0 auto var(--space-lg);
    text-align: center;
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--color-body);
}
.chapter-feedback-intro .feedback-count {
    color: var(--color-accent);
    font-weight: 700;
}

.feedback-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.1rem;
}
@media (min-width: 1100px) {
    .feedback-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 1099px) and (min-width: 700px) {
    .feedback-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 699px) and (min-width: 480px) {
    .feedback-grid { grid-template-columns: repeat(2, 1fr); }
}

.feedback-tile {
    position: relative;
    background: var(--color-bg);
    border: 1px solid var(--color-light);
    border-radius: var(--radius-md);
    padding: 1rem 1.05rem 1.1rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    transition: transform var(--transition-fast),
                box-shadow var(--transition-fast),
                border-color var(--transition-fast);
    opacity: 0;
    transform: translateY(20px);
}
.feedback-tile.in-view {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease,
                box-shadow var(--transition-fast),
                border-color var(--transition-fast);
}
.feedback-tile:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-muted);
}
.feedback-tile::before {
    content: '\201C';
    position: absolute;
    top: 0.2rem; right: 0.6rem;
    font-size: 2.4rem;
    line-height: 1;
    color: var(--color-light);
    font-family: Georgia, serif;
    pointer-events: none;
}
.feedback-tile-name {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--color-secondary);
    letter-spacing: -0.005em;
    line-height: 1.3;
}
.feedback-tile-meta {
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-accent);
    font-weight: 600;
    line-height: 1.5;
}
.feedback-tile-meta .sep {
    color: var(--color-light);
    margin: 0 0.35rem;
}
.feedback-tile-quote {
    font-size: 0.78rem;
    line-height: 1.6;
    color: var(--color-body);
    font-style: italic;
    margin-top: 0.2rem;
    /* clamp long quotes to keep tiles compact */
    display: -webkit-box;
    -webkit-line-clamp: 7;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.feedback-tile.is-expanded .feedback-tile-quote {
    -webkit-line-clamp: unset;
    overflow: visible;
}
.feedback-tile-toggle {
    align-self: flex-start;
    margin-top: 0.25rem;
    background: none;
    border: none;
    padding: 0;
    font-family: var(--font-main);
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-accent);
    font-weight: 600;
    cursor: pointer;
    border-bottom: 1px dashed var(--color-accent);
}
.feedback-tile-toggle:hover { color: var(--color-secondary); border-bottom-color: var(--color-secondary); }
.feedback-tile-toggle[hidden] { display: none; }
.feedback-tile.is-external .feedback-tile-meta::after {
    content: '· EXT';
    margin-left: 0.4rem;
    color: var(--color-muted);
    letter-spacing: 0.18em;
}

/* ============================================================
   13. Feedback Ticker Ribbon (fixed bottom, chapters-block only)
   ============================================================ */
.ticker-ribbon {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: 42px;
    background: var(--color-primary);
    border-top: 2px solid var(--color-accent);
    z-index: 200;
    overflow: hidden;
    display: flex;
    align-items: stretch;
    transform: translateY(100%);
    transition: transform 0.5s cubic-bezier(.2,.8,.2,1);
    box-shadow: 0 -6px 18px rgba(0,0,0,0.22);
    pointer-events: none;
}
.ticker-ribbon.is-visible {
    transform: translateY(0);
    pointer-events: auto;
}
.ticker-label {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0 1rem;
    background: var(--color-accent);
    color: #fff;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    flex-shrink: 0;
    white-space: nowrap;
}
.ticker-pulse {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7);
    animation: tickerPulse 1.6s ease-out infinite;
}
@keyframes tickerPulse {
    0%   { box-shadow: 0 0 0 0 rgba(255,255,255,0.85); }
    70%  { box-shadow: 0 0 0 12px rgba(255,255,255,0); }
    100% { box-shadow: 0 0 0 0 rgba(255,255,255,0); }
}
.ticker-viewport {
    position: relative;
    flex: 1;
    overflow: hidden;
    -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 4%, #000 96%, transparent 100%);
            mask-image: linear-gradient(90deg, transparent 0, #000 4%, #000 96%, transparent 100%);
}
.ticker-track {
    display: inline-flex;
    align-items: center;
    height: 100%;
    white-space: nowrap;
    animation: tickerFlow 540s linear infinite;
    will-change: transform;
}
.ticker-ribbon:hover .ticker-track,
.ticker-ribbon:focus-within .ticker-track {
    animation-play-state: paused;
}
@keyframes tickerFlow {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}
.ticker-item {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0 1.4rem;
    color: var(--color-dark-text);
    font-size: 0.78rem;
    font-style: italic;
    line-height: 1;
}
.ticker-item-author {
    font-style: normal;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.06em;
    font-size: 0.7rem;
    text-transform: uppercase;
}
.ticker-item-sep {
    color: var(--color-muted);
    font-style: normal;
    font-weight: 700;
}

/* push footer above ticker so the "Back to Top" button isn't covered */
body.ticker-active .impact-footer {
    padding-bottom: calc(var(--space-md) + 42px);
}

@media (max-width: 600px) {
    .ticker-ribbon { height: 38px; }
    .ticker-label { padding: 0 0.7rem; font-size: 0.56rem; letter-spacing: 0.18em; }
    .ticker-item { font-size: 0.7rem; padding: 0 1rem; }
    body.ticker-active .impact-footer { padding-bottom: calc(var(--space-md) + 38px); }
}
@media (prefers-reduced-motion: reduce) {
    .ticker-track { animation-duration: 600s; }
    .ticker-pulse { animation: none; }
}