/* =========================================================
   The Chameleon's Limit — Website styles
   ========================================================= */

:root {
    /* Palette: deep ink + chameleon teal-green + coral accent */
    --bg: #faf8f4;
    --bg-deep: #f3efe7;
    --ink: #14201e;
    --ink-soft: #354341;
    --ink-mute: #6b7b78;
    --line: #e3dcd0;
    --line-soft: #ecdcc3;

    --teal: #1f7a6b;
    --teal-deep: #0e4a40;
    --teal-light: #d3ebe2;

    --coral: #d8553b;
    --coral-light: #f9dbd0;
    --gold: #d9a02a;
    --violet: #6d4c8b;
    --rose: #c7547a;

    --human: #3a7f6e;
    --model: #c85a3b;

    --shadow-sm: 0 2px 6px rgba(20, 32, 30, 0.05), 0 1px 2px rgba(20, 32, 30, 0.04);
    --shadow-md: 0 8px 24px rgba(20, 32, 30, 0.07), 0 2px 6px rgba(20, 32, 30, 0.04);
    --shadow-lg: 0 24px 56px rgba(20, 32, 30, 0.10), 0 6px 16px rgba(20, 32, 30, 0.05);

    --radius: 14px;
    --radius-lg: 20px;

    --sidebar-w: 270px;
    --content-max: 1040px;

    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Fraunces', 'Iowan Old Style', Georgia, serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
}

* { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: 24px;
}

body {
    margin: 0;
    padding: 0;
    color: var(--ink);
    background: var(--bg);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--teal-deep); text-decoration: none; }
a:hover { color: var(--coral); }

/* Ambient background */
.bg-orbs {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}
.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.35;
}
.orb-1 {
    width: 480px; height: 480px;
    top: -120px; right: -160px;
    background: radial-gradient(circle, #a8d5c7 0%, transparent 70%);
}
.orb-2 {
    width: 380px; height: 380px;
    top: 40%; left: -120px;
    background: radial-gradient(circle, #f3c8b5 0%, transparent 70%);
}
.orb-3 {
    width: 420px; height: 420px;
    bottom: -120px; right: 20%;
    background: radial-gradient(circle, #e6d9a8 0%, transparent 70%);
}

/* =========================================================
   Sidebar
   ========================================================= */
.sidebar {
    position: fixed;
    top: 0; left: 0;
    width: var(--sidebar-w);
    height: 100vh;
    padding: 28px 22px 20px;
    background: linear-gradient(180deg, rgba(255,255,255,0.88) 0%, rgba(250, 248, 244, 0.92) 100%);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-right: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    z-index: 40;
    transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 22px;
    border-bottom: 1px dashed var(--line);
    margin-bottom: 18px;
}
.sidebar-logo {
    width: 40px; height: 40px;
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(31, 122, 107, 0.22);
    object-fit: cover;
}
.sidebar-title-main {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 15px;
    line-height: 1.15;
    color: var(--ink);
    letter-spacing: -0.01em;
}
.sidebar-title-sub {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--teal);
    font-weight: 600;
    margin-top: 2px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    overflow-y: auto;
    margin-right: -8px;
    padding-right: 8px;
}
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: var(--line); border-radius: 4px; }

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: 500;
    color: var(--ink-soft);
    transition: all 0.18s ease;
    position: relative;
}
.nav-link:hover {
    background: rgba(31, 122, 107, 0.07);
    color: var(--teal-deep);
}
.nav-link.active {
    background: rgba(31, 122, 107, 0.11);
    color: var(--teal-deep);
    font-weight: 600;
}
.nav-dot {
    display: inline-block;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--line);
    flex-shrink: 0;
    transition: all 0.18s ease;
}
.nav-link:hover .nav-dot,
.nav-link.active .nav-dot {
    background: var(--coral);
    box-shadow: 0 0 0 3px rgba(216, 85, 59, 0.15);
}

.sidebar-footer {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px dashed var(--line);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.gh-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    background: var(--ink);
    color: #fff;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    justify-content: center;
    transition: all 0.18s ease;
}
.gh-btn:hover {
    background: var(--coral);
    color: #fff;
    transform: translateY(-1px);
}
.gh-btn img { filter: invert(1) brightness(2); }
.version-tag {
    font-size: 10.5px;
    text-align: center;
    letter-spacing: 0.18em;
    color: var(--ink-mute);
    text-transform: uppercase;
}

.sidebar-toggle {
    display: none;
    position: fixed;
    top: 14px; left: 14px;
    z-index: 50;
    background: var(--ink);
    color: #fff;
    border: none;
    width: 42px; height: 42px;
    border-radius: 10px;
    cursor: pointer;
    align-items: center; justify-content: center;
    box-shadow: var(--shadow-md);
}

/* =========================================================
   Content layout
   ========================================================= */
.content {
    position: relative;
    z-index: 1;
    margin-left: var(--sidebar-w);
    padding: 56px 60px 80px;
    max-width: calc(var(--sidebar-w) + var(--content-max) + 120px);
}

.section {
    max-width: var(--content-max);
    margin: 0 auto 92px;
    scroll-margin-top: 32px;
}
.section:last-of-type { margin-bottom: 24px; }

/* Fade-in reveal: prereveal hides, revealed shows.
   Sections without either class are visible by default (safe fallback). */
.section--prereveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.section--revealed {
    opacity: 1;
    transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
    .section--prereveal,
    .section--revealed {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

.section-head {
    margin-bottom: 32px;
}
.section-kicker {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.16em;
    color: var(--coral);
    text-transform: uppercase;
    font-weight: 500;
    margin-bottom: 10px;
}
.section-head h2 {
    font-family: var(--font-display);
    font-size: 38px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.12;
    margin: 0;
    color: var(--ink);
}

.prose {
    font-size: 16.5px;
    line-height: 1.75;
    color: var(--ink-soft);
    max-width: 720px;
    margin-bottom: 28px;
}
.prose p { margin: 0 0 1em; }
.prose-tight p { margin-bottom: 0.6em; }
.prose strong { color: var(--ink); }

.muted { color: var(--ink-mute); font-size: 14.5px; }
.muted-tiny { color: var(--ink-mute); font-size: 12.5px; margin-top: 10px; }
.accent-text { color: var(--coral); }
.gradient-text {
    background: linear-gradient(120deg, var(--coral) 0%, var(--gold) 50%, var(--teal) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.mono { font-family: var(--font-mono); font-size: 0.92em; }
.eq {
    font-family: var(--font-mono);
    background: #fff;
    padding: 2px 8px;
    border-radius: 5px;
    border: 1px solid var(--line);
    font-size: 0.92em;
}

/* =========================================================
   Hero
   ========================================================= */
.hero {
    min-height: calc(100vh - 40px);
    display: flex;
    align-items: center;
    margin-bottom: 120px;
}
.hero-inner { width: 100%; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(31, 122, 107, 0.10);
    color: var(--teal-deep);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    font-weight: 500;
    letter-spacing: 0.06em;
    margin-bottom: 28px;
}
.badge-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--coral);
    box-shadow: 0 0 0 3px rgba(216, 85, 59, 0.2);
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 3px rgba(216, 85, 59, 0.2); }
    50% { box-shadow: 0 0 0 7px rgba(216, 85, 59, 0); }
}

.hero-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 60px;
    letter-spacing: -0.028em;
    line-height: 1.04;
    margin: 0 0 28px;
    color: var(--ink);
}
.hero-title-small {
    display: block;
    font-size: 20px;
    font-weight: 400;
    font-style: italic;
    color: var(--ink-mute);
    letter-spacing: -0.005em;
    margin-bottom: 18px;
}

.hero-authors {
    font-size: 16px;
    color: var(--ink-soft);
    margin: 0 0 6px;
    display: flex;
    flex-wrap: wrap;
    gap: 4px 18px;
}
.hero-authors span { white-space: nowrap; }
.hero-affiliations {
    font-size: 13.5px;
    color: var(--ink-mute);
    margin: 0 0 32px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 52px;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 22px;
    border-radius: 999px;
    font-size: 14.5px;
    font-weight: 600;
    transition: all 0.2s ease;
    border: 1.5px solid transparent;
    cursor: pointer;
    font-family: inherit;
}
.btn-primary {
    background: var(--ink);
    color: #fff;
    border-color: var(--ink);
}
.btn-primary:hover {
    background: var(--coral);
    border-color: var(--coral);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(216, 85, 59, 0.28);
}
.btn-ghost {
    background: #fff;
    color: var(--ink);
    border-color: var(--line);
}
.btn-ghost:hover {
    border-color: var(--ink);
    transform: translateY(-1px);
    color: var(--ink);
}

/* Teaser */
.teaser {
    display: grid;
    grid-template-columns: 1fr 56px 1fr;
    gap: 18px;
    align-items: stretch;
    margin-top: 10px;
}
.teaser-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition: transform 0.25s ease;
}
.teaser-card:hover { transform: translateY(-3px); }
.teaser-label {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
}
.teaser-chip {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}
.chip-human {
    background: var(--teal-light);
    color: var(--teal-deep);
}
.chip-human-inline {
    background: var(--teal-light);
    color: var(--teal-deep);
    padding: 2px 8px;
    border-radius: 5px;
    font-family: var(--font-mono);
    font-size: 0.9em;
    font-weight: 600;
}
.chip-model {
    background: var(--coral-light);
    color: var(--coral);
}
.teaser-caption {
    font-size: 12.5px;
    color: var(--ink-mute);
    font-family: var(--font-mono);
}
.teaser-img-wrap {
    background: var(--bg-deep);
    border-radius: 12px;
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 220px;
    overflow: hidden;
}
.teaser-img-wrap img {
    max-height: 260px;
    width: auto;
    transition: transform 0.35s ease;
}
.teaser-card:hover .teaser-img-wrap img { transform: scale(1.03); }
.teaser-verdict {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 17px;
    font-style: italic;
}
.teaser-good { color: var(--teal-deep); }
.teaser-bad { color: var(--coral); }

.teaser-vs {
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 22px;
    color: var(--ink-mute);
}
.teaser-caption-bottom {
    text-align: center;
    font-size: 13.5px;
    color: var(--ink-mute);
    margin-top: 16px;
}

.scroll-hint {
    margin-top: 56px;
    display: flex;
    justify-content: center;
}
.scroll-hint span {
    width: 22px;
    height: 36px;
    border: 1.5px solid var(--ink-mute);
    border-radius: 12px;
    position: relative;
}
.scroll-hint span::after {
    content: '';
    position: absolute;
    top: 6px; left: 50%;
    transform: translateX(-50%);
    width: 3px; height: 7px;
    border-radius: 2px;
    background: var(--ink-mute);
    animation: scroll 1.6s ease-in-out infinite;
}
@keyframes scroll {
    0% { opacity: 0; transform: translate(-50%, 0); }
    50% { opacity: 1; }
    100% { opacity: 0; transform: translate(-50%, 12px); }
}

/* =========================================================
   Callouts, narrative placeholder
   ========================================================= */
.callout {
    display: flex;
    gap: 14px;
    padding: 18px 22px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, #fff 0%, #fdf7f2 100%);
    border: 1px solid var(--line-soft);
    border-left: 4px solid var(--coral);
    margin: 24px 0;
    box-shadow: var(--shadow-sm);
}
.callout-icon {
    width: 30px; height: 30px;
    background: var(--coral);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: var(--font-display);
    flex-shrink: 0;
}
.callout-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 17px;
    color: var(--ink);
    margin-bottom: 4px;
}
.callout-body p { margin: 0; font-size: 15px; color: var(--ink-soft); }

/* =========================================================
   Scenarios grid + case study
   ========================================================= */
.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 14px;
    margin: 28px 0;
}
.scenario-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 16px 18px;
    transition: all 0.22s ease;
    cursor: pointer;
    position: relative;
}
.scenario-card:hover {
    border-color: var(--coral);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.scenario-card.active {
    border-color: var(--coral);
    background: linear-gradient(135deg, #fff 0%, #fdf3ee 100%);
    box-shadow: 0 8px 24px rgba(216, 85, 59, 0.15);
}
.scenario-card-top {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 6px;
}
.scenario-id {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--coral);
    font-weight: 600;
    letter-spacing: 0.04em;
}
.scenario-tag {
    font-size: 10.5px;
    padding: 2px 8px;
    border-radius: 4px;
    background: var(--bg-deep);
    color: var(--ink-mute);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-weight: 600;
}
.scenario-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 15.5px;
    color: var(--ink);
    line-height: 1.25;
    margin: 0 0 6px;
}
.scenario-summary {
    font-size: 13px;
    color: var(--ink-soft);
    line-height: 1.5;
    margin: 0;
}
.scenario-card .cta {
    font-size: 11.5px;
    color: var(--coral);
    margin-top: 10px;
    font-weight: 600;
    opacity: 0.75;
}

.case-dynamic {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    box-shadow: var(--shadow-md);
    margin: 24px 0;
}
.case-dynamic.empty {
    padding: 40px;
    text-align: center;
    color: var(--ink-mute);
    background: var(--bg-deep);
}
.loading { color: var(--ink-mute); font-size: 14px; }
.dots span {
    animation: dot 1.4s ease-in-out infinite;
    animation-delay: calc(var(--i, 0) * 0.2s);
}
.dots span:nth-child(1) { --i: 0; }
.dots span:nth-child(2) { --i: 1; }
.dots span:nth-child(3) { --i: 2; }
@keyframes dot { 0%, 80%, 100% { opacity: 0.3; } 40% { opacity: 1; } }

/* Case study selected display */
.case-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--line);
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.case-scenario-meta {
    flex: 1; min-width: 260px;
}
.case-scenario-id {
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--coral);
    letter-spacing: 0.08em;
    margin-bottom: 4px;
}
.case-scenario-title {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--ink);
    line-height: 1.2;
}
.case-scenario-body {
    font-size: 14.5px;
    color: var(--ink-soft);
    margin: 0;
    line-height: 1.6;
}
.case-model-chip {
    display: inline-flex;
    flex-direction: column;
    gap: 4px;
    padding: 10px 18px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--ink) 0%, #2a3a38 100%);
    color: #fff;
}
.case-model-chip-label {
    font-size: 10.5px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.6);
}
.case-model-chip-name {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
}

/* Persona vs persona diagram */
.vs-grid {
    display: grid;
    grid-template-columns: 1fr 80px 1fr;
    gap: 16px;
    align-items: stretch;
}
.persona-col {
    background: var(--bg-deep);
    border-radius: 14px;
    padding: 18px 18px 14px;
    border: 1.5px solid transparent;
    transition: all 0.2s ease;
}
.persona-col.persona-a { border-color: rgba(31, 122, 107, 0.3); }
.persona-col.persona-b { border-color: rgba(216, 85, 59, 0.3); }
.persona-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.persona-label {
    font-size: 10.5px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 700;
    padding: 3px 9px;
    border-radius: 5px;
}
.persona-a .persona-label { background: var(--teal-light); color: var(--teal-deep); }
.persona-b .persona-label { background: var(--coral-light); color: var(--coral); }
.persona-attrs {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13.5px;
}
.persona-attr {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    padding: 4px 0;
    border-bottom: 1px dashed rgba(0,0,0,0.08);
}
.persona-attr:last-child { border-bottom: none; }
.persona-attr-key {
    color: var(--ink-mute);
    font-size: 12px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    font-weight: 600;
}
.persona-attr-val {
    color: var(--ink);
    font-weight: 500;
    text-align: right;
}

.vs-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
}
.vs-circle {
    width: 58px; height: 58px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--teal) 0%, var(--coral) 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 18px;
    box-shadow: 0 6px 20px rgba(216, 85, 59, 0.3);
}
.vs-line {
    width: 1px; height: 16px;
    background: var(--line);
}

/* Verdict row */
.case-verdict {
    margin-top: 22px;
    padding: 18px 22px;
    background: linear-gradient(135deg, #fff8f4 0%, #fff 100%);
    border: 1.5px dashed var(--coral);
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.case-verdict-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--coral);
    color: #fff;
    border-radius: 8px;
    font-weight: 700;
    font-size: 15px;
}
.case-verdict-rating .rating-num {
    font-family: var(--font-display);
    font-size: 22px;
    line-height: 1;
}
.case-verdict-text {
    flex: 1;
    min-width: 200px;
    font-size: 14.5px;
    color: var(--ink-soft);
}
.case-verdict-text strong { color: var(--ink); }

/* Collapse bar */
.case-collapse-stats {
    margin-top: 22px;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 12px 20px;
    align-items: center;
    font-size: 13.5px;
}
.stat-label {
    font-family: var(--font-mono);
    color: var(--ink-mute);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.dist-bar {
    display: flex;
    height: 28px;
    border-radius: 6px;
    overflow: hidden;
    background: var(--line);
}
.dist-seg {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 11.5px;
    font-weight: 700;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 0;
    overflow: hidden;
}
.dist-seg-1 { background: #c13e2a; }
.dist-seg-2 { background: #d96a4e; }
.dist-seg-3 { background: #a8a095; }
.dist-seg-4 { background: #6b9984; }
.dist-seg-5 { background: #2e7c6a; }

.case-note {
    margin-top: 18px;
    font-size: 13px;
    color: var(--ink-mute);
    font-style: italic;
    line-height: 1.55;
}

/* Pool bars (conservative vs liberal) */
.pool-row {
    display: flex;
    align-items: center;
    gap: 14px;
}
.pool-bar {
    flex: 1;
    height: 14px;
    background: var(--line);
    border-radius: 7px;
    overflow: hidden;
    position: relative;
}
.pool-fill {
    height: 100%;
    border-radius: 7px;
    transition: width 0.9s cubic-bezier(0.4, 0, 0.2, 1);
}
.pool-con { background: var(--teal-deep); }
.pool-lib { background: var(--coral); }
.pool-stat {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--ink);
    min-width: 120px;
    text-align: right;
}

.case-collapse-punchline {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 24px;
    align-items: center;
    margin-top: 24px;
    padding: 22px 24px;
    background: linear-gradient(135deg, #fcf6ed 0%, #fff 100%);
    border-radius: 14px;
    border-left: 4px solid var(--gold);
    box-shadow: var(--shadow-sm);
}
.punchline-equation {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}
.eq-side {
    text-align: center;
    padding: 10px 16px;
    border-radius: 10px;
    min-width: 106px;
}
.eq-con { background: rgba(31, 122, 107, 0.10); }
.eq-lib { background: rgba(216, 85, 59, 0.10); }
.eq-pct {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 30px;
    line-height: 1.05;
    letter-spacing: -0.02em;
}
.eq-con .eq-pct { color: var(--teal-deep); }
.eq-lib .eq-pct { color: var(--coral); }
.eq-label {
    font-size: 10.5px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ink-mute);
    margin-top: 4px;
}
.eq-op {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 36px;
    color: var(--gold);
    line-height: 1;
}
.punchline-text {
    font-size: 14.5px;
    color: var(--ink-soft);
    line-height: 1.6;
}
@media (max-width: 820px) {
    .case-collapse-punchline { grid-template-columns: 1fr; }
    .punchline-equation { justify-content: center; }
}

/* Model switcher */
.model-switcher {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px dashed var(--line);
}
.model-switcher .stat-label { margin-bottom: 10px; }
.model-switcher-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.model-tag-btn {
    cursor: pointer;
    border: 1px solid var(--line);
    background: #fff;
    color: var(--ink-soft);
    font-family: var(--font-mono);
    font-size: 11.5px;
    font-weight: 500;
    transition: all 0.18s ease;
    padding: 5px 11px;
    border-radius: 6px;
}
.model-tag-btn:hover {
    border-color: var(--coral);
    color: var(--coral);
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(0,0,0,0.06);
}
.model-tag-btn.active {
    background: var(--ink);
    color: #fff;
    border-color: var(--ink);
    box-shadow: 0 4px 10px rgba(0,0,0,0.18);
}

/* Highlight the dominant segment in the distribution bar */
.dist-seg-dominant {
    animation: dominantPulse 2.2s ease-in-out infinite;
    position: relative;
}
@keyframes dominantPulse {
    0%, 100% { box-shadow: inset 0 0 0 0 rgba(255,255,255,0); }
    50% { box-shadow: inset 0 0 0 2px rgba(255,255,255,0.6); }
}

/* =========================================================
   Framework — BTM matrix + axes
   ========================================================= */
/* Behavioral Trait Matrix — concrete 3×5 example */
.btm-visual {
    margin: 24px 0 44px;
    padding: 22px 24px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
}
.btm2-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 18px;
    flex-wrap: wrap;
    gap: 10px;
}
.btm2-header-name {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: -0.005em;
}
.btm2-header-eq {
    font-size: 13px;
    color: var(--ink-mute);
}

.btm2-grid {
    display: grid;
    grid-template-columns: 210px repeat(5, 1fr);
    gap: 6px;
}
.btm2-corner {
    grid-column: 1;
    grid-row: 1;
    position: relative;
    min-height: 58px;
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--ink-mute);
    letter-spacing: 0.04em;
}
.btm2-corner-y {
    position: absolute;
    left: 6px; bottom: 6px;
}
.btm2-corner-x {
    position: absolute;
    right: 6px; top: 6px;
}

.btm2-col-head {
    padding: 8px 8px 10px;
    background: var(--bg-deep);
    border-radius: 8px 8px 0 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
    text-align: center;
    min-height: 58px;
    justify-content: flex-end;
}
.btm2-col-inst {
    font-family: var(--font-mono);
    font-size: 9.5px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--teal);
    font-weight: 700;
}
.btm2-col-label {
    font-size: 12px;
    color: var(--ink);
    line-height: 1.3;
    font-weight: 500;
}

.btm2-row {
    display: contents;
}
.btm2-row-head {
    padding: 10px 12px;
    background: linear-gradient(135deg, #fafafa 0%, #f5f2ec 100%);
    border: 1px solid var(--line);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2px;
}
.btm2-row-short {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 14px;
    color: var(--ink);
}
.btm2-row-tag {
    font-size: 12px;
    color: var(--ink-soft);
    font-family: var(--font-mono);
}
.btm2-row-detail {
    font-size: 11px;
    color: var(--ink-mute);
    line-height: 1.35;
    margin-top: 3px;
}

.btm2-cell {
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 58px;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.btm2-cell:hover {
    transform: scale(1.04);
    box-shadow: 0 6px 16px rgba(0,0,0,0.10);
    z-index: 2;
}
.btm2-cell-num {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 24px;
    line-height: 1;
    letter-spacing: -0.01em;
}
.btm2-cell-text {
    background: #fff;
    border: 1px dashed var(--line);
    font-size: 11.5px;
    color: var(--ink-soft);
    padding: 8px 10px;
    text-align: center;
    font-style: italic;
    line-height: 1.35;
    overflow: hidden;
}

.btm2-legend {
    margin-top: 16px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px 18px;
    font-size: 12.5px;
    color: var(--ink-mute);
    align-items: center;
}
.btm2-legend-scale {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 11.5px;
}
.btm2-swatch {
    display: inline-block;
    width: 14px; height: 14px;
    border-radius: 3px;
    margin-right: 2px;
    margin-left: 6px;
    vertical-align: -3px;
}

@media (max-width: 820px) {
    .btm2-grid { grid-template-columns: 140px repeat(5, minmax(70px, 1fr)); overflow-x: auto; }
    .btm2-row-head { padding: 8px; }
    .btm2-row-detail { display: none; }
    .btm2-cell { min-height: 48px; }
    .btm2-cell-num { font-size: 20px; }
    .btm2-cell-text { font-size: 10.5px; }
}

.axes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 32px 0;
}
.axis-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 24px 22px 22px;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.axis-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--teal);
}
.axis-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--teal) 0%, var(--gold) 100%);
    transform-origin: left;
    transform: scaleX(0);
    transition: transform 0.4s ease;
}
.axis-card:hover::before { transform: scaleX(1); }

.axis-num {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--coral);
    letter-spacing: 0.1em;
    font-weight: 600;
    margin-bottom: 8px;
}
.axis-art {
    margin: 6px 0 12px;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-deep);
    border-radius: 10px;
    padding: 8px;
    overflow: hidden;
}
.axis-art img { max-height: 130px; }
.axis-card h3 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    margin: 0 0 4px;
    color: var(--ink);
    letter-spacing: -0.01em;
}
.axis-tag {
    font-style: italic;
    color: var(--teal-deep);
    font-size: 13.5px;
    margin: 0 0 10px;
    font-weight: 500;
}
.axis-body {
    font-size: 14px;
    color: var(--ink-soft);
    margin: 0 0 12px;
    line-height: 1.6;
}
.axis-bad {
    font-size: 12.5px;
    color: var(--ink-mute);
    padding: 8px 12px;
    background: var(--bg-deep);
    border-radius: 6px;
    border-left: 3px solid var(--coral);
}
.axis-bad-label {
    font-family: var(--font-mono);
    color: var(--coral);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
    margin-right: 4px;
}

/* =========================================================
   Setup
   ========================================================= */
.setup-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}
.setup-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 22px 22px 20px;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    transition: all 0.25s ease;
}
.setup-card:hover {
    border-color: var(--teal);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.setup-card-num {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 800;
    line-height: 1;
    color: var(--coral);
    letter-spacing: -0.03em;
}
.setup-card-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-mute);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 6px 0 14px;
}
.setup-card-body { font-size: 14px; color: var(--ink-soft); }
.setup-card-body p { margin: 0 0 10px; }

.chips-details summary {
    cursor: pointer;
    font-size: 13px;
    color: var(--teal-deep);
    font-weight: 600;
    margin-top: 6px;
    list-style: none;
}
.chips-details summary::before {
    content: '+ ';
    font-family: var(--font-mono);
}
.chips-details[open] summary::before { content: '− '; }
.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
}
.chip {
    font-size: 11.5px;
    padding: 3px 9px;
    background: var(--bg-deep);
    border: 1px solid var(--line);
    border-radius: 20px;
    color: var(--ink-soft);
}

.instruments {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.instruments li {
    font-size: 14px;
    color: var(--ink-soft);
    padding-left: 64px;
    position: relative;
    line-height: 1.45;
}
.inst-tag {
    position: absolute;
    top: 2px; left: 0;
    font-size: 10px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.inst-tag-struct { background: var(--teal-light); color: var(--teal-deep); }
.inst-tag-judge { background: #efe2f0; color: var(--violet); }
.inst-tag-open { background: #fff2cf; color: #8e6d00; }

.model-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.model-tag {
    font-size: 11.5px;
    padding: 3px 9px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 6px;
    color: var(--ink-soft);
    font-family: var(--font-mono);
    font-weight: 500;
    transition: all 0.15s ease;
}
.model-tag.role-play {
    border-color: var(--rose);
    color: var(--rose);
    background: #fdf2f5;
}
.model-tag:hover {
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(0,0,0,0.08);
}

.human-ref {
    display: flex;
    gap: 14px;
    align-items: center;
    padding: 14px 20px;
    background: var(--teal-light);
    border-radius: 10px;
    font-size: 14px;
    color: var(--teal-deep);
}
.human-ref-icon { font-size: 22px; }

/* =========================================================
   Findings
   ========================================================= */
.finding-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
}
.finding-num {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 46px;
    color: var(--coral);
    line-height: 1;
    letter-spacing: -0.02em;
    flex-shrink: 0;
}
.finding-body { flex: 1; min-width: 0; }
.finding-body h3 {
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 700;
    margin: 0 0 10px;
    color: var(--ink);
    letter-spacing: -0.01em;
    line-height: 1.2;
}
.finding-body p { font-size: 15px; color: var(--ink-soft); margin: 0 0 16px; }
.finding-body figure {
    margin: 20px 0 16px;
    padding: 16px;
    background: var(--bg-deep);
    border-radius: 12px;
    border: 1px solid var(--line);
}
.finding-body figure img { margin: 0 auto; max-height: 340px; }
.finding-body figcaption {
    font-size: 12.5px;
    color: var(--ink-mute);
    margin-top: 10px;
    line-height: 1.5;
    text-align: center;
}

.mini-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 12px;
    margin-top: 18px;
}
.mini-card {
    padding: 14px 16px;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: #fff;
    transition: all 0.2s ease;
}
.mini-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.mini-collapse { border-left: 3px solid #c13e2a; }
.mini-shallow { border-left: 3px solid var(--gold); }
.mini-misaligned { border-left: 3px solid var(--violet); }
.mini-label {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--coral);
    font-weight: 600;
    margin-bottom: 6px;
}
.mini-model {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 13px;
    color: var(--ink);
    margin-bottom: 6px;
}
.mini-metric { font-size: 13px; color: var(--ink-soft); line-height: 1.45; }

/* =========================================================
   Truncation pyramid
   ========================================================= */
.pyramid-wrap {
    margin: 20px 0 32px;
    padding: 24px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
}
.pyramid-svg {
    width: 100%;
    height: auto;
    display: block;
}
.pyramid-caption {
    font-size: 13px;
    color: var(--ink-mute);
    text-align: center;
    margin-top: 14px;
    line-height: 1.5;
}

/* =========================================================
   Fidelity trap flow
   ========================================================= */
.trap-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin: 24px 0 32px;
    padding: 24px 16px;
    background: linear-gradient(135deg, #fff 0%, #faf4ee 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--line-soft);
}
.trap-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 20px;
    background: #fff;
    border: 1.5px solid var(--teal-light);
    border-radius: 14px;
    min-width: 150px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}
.trap-step.trap-bad { border-color: var(--coral-light); }
.trap-ico { font-size: 26px; }
.trap-label {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 14.5px;
    color: var(--ink);
    line-height: 1.2;
}
.trap-metric {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--ink-mute);
    font-weight: 500;
}
.trap-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--coral);
}
.trap-arrow span {
    font-size: 11px;
    font-family: var(--font-mono);
    letter-spacing: 0.04em;
}

/* Pipeline */
.pipeline-wrap {
    margin: 32px 0;
    padding: 24px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
}
.pipeline-title {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 18px;
    text-align: center;
}
.pipeline-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    position: relative;
}
.pipeline-grid::before {
    content: '';
    position: absolute;
    top: 30px;
    left: calc(100% / 6);
    right: calc(100% / 6);
    height: 2px;
    background: linear-gradient(90deg, var(--teal) 0%, var(--gold) 50%, var(--coral) 100%);
    z-index: 0;
}
.pipeline-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 0 12px;
    position: relative;
    z-index: 1;
}
.pipeline-node {
    width: 60px; height: 60px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--teal);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 18px;
    color: var(--teal);
    margin-bottom: 12px;
    box-shadow: 0 4px 12px rgba(31, 122, 107, 0.15);
}
.pipeline-stage:nth-child(2) .pipeline-node { border-color: var(--gold); color: var(--gold); }
.pipeline-stage:nth-child(3) .pipeline-node { border-color: var(--coral); color: var(--coral); }
.pipeline-stage-name {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 2px;
}
.pipeline-stage-sub {
    font-size: 11px;
    color: var(--ink-mute);
    margin-bottom: 10px;
}
.pipeline-metrics {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-family: var(--font-mono);
    font-size: 12px;
}
.pipeline-metric {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    padding: 3px 10px;
    background: var(--bg-deep);
    border-radius: 5px;
}
.pipeline-metric-key { color: var(--ink-mute); }
.pipeline-metric-val { color: var(--ink); font-weight: 600; }
.pipeline-caption {
    margin-top: 14px;
    font-size: 12.5px;
    color: var(--ink-mute);
    text-align: center;
    line-height: 1.5;
}

/* Domain reversal */
.reversal-wrap {
    margin: 32px 0;
    padding: 24px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
}
.reversal-title {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 18px;
    text-align: center;
}
.reversal-flip {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 20px;
    align-items: center;
}
.reversal-col {
    background: var(--bg-deep);
    border-radius: 12px;
    padding: 16px 18px;
}
.reversal-col-head {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-mute);
    margin-bottom: 10px;
    font-weight: 600;
}
.reversal-item {
    display: flex;
    justify-content: space-between;
    padding: 6px 10px;
    background: #fff;
    border-radius: 6px;
    margin-bottom: 6px;
    font-size: 13.5px;
}
.reversal-item.rank-best { border-left: 3px solid var(--teal); font-weight: 600; }
.reversal-item.rank-worst { border-left: 3px solid var(--coral); font-weight: 600; }
.reversal-arrows {
    font-size: 22px;
    color: var(--coral);
}
.reversal-caption {
    margin-top: 14px;
    font-size: 12.5px;
    color: var(--ink-mute);
    text-align: center;
    line-height: 1.5;
}

/* =========================================================
   Takeaways + cite
   ========================================================= */
.takeaway-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 14px;
    margin-bottom: 32px;
}
.takeaway {
    display: flex;
    gap: 12px;
    padding: 18px 20px;
    background: #fff;
    border-radius: 12px;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}
.takeaway:hover {
    transform: translateY(-2px);
    border-color: var(--teal);
    box-shadow: var(--shadow-md);
}
.take-num {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--coral);
    font-size: 20px;
    line-height: 1;
    flex-shrink: 0;
}
.takeaway p { font-size: 14px; margin: 0; color: var(--ink-soft); line-height: 1.55; }

.cite-block {
    position: relative;
    background: var(--ink);
    color: #e2e0db;
    border-radius: var(--radius);
    padding: 20px 22px;
    margin-top: 8px;
}
.cite-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: #9fb9b3;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 10px;
}
.cite-code {
    margin: 0;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 12.5px;
    line-height: 1.55;
    white-space: pre-wrap;
    word-break: break-word;
}
.copy-btn {
    position: absolute;
    top: 14px; right: 14px;
    background: rgba(255,255,255,0.1);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 6px;
    padding: 5px 11px;
    font-size: 11.5px;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all 0.15s ease;
}
.copy-btn:hover { background: var(--coral); border-color: var(--coral); }
.copy-btn.copied { background: var(--teal); border-color: var(--teal); }

/* =========================================================
   References
   ========================================================= */
.ref {
    display: inline-flex;
    align-items: center;
    padding: 0 5px;
    margin: 0 1px;
    font-family: var(--font-mono);
    font-size: 10.5px;
    font-weight: 600;
    color: var(--coral);
    background: rgba(216, 85, 59, 0.08);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
    vertical-align: 2px;
    text-decoration: none;
    line-height: 18px;
}
.ref:hover {
    background: var(--coral);
    color: #fff;
}
.ref-sample {
    display: inline-block;
    padding: 0 6px;
    background: rgba(216, 85, 59, 0.12);
    color: var(--coral);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
}

.refs-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 20px;
    max-height: 520px;
    overflow-y: auto;
    padding-right: 8px;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 16px 8px 16px 0;
}
.refs-list::-webkit-scrollbar { width: 6px; }
.refs-list::-webkit-scrollbar-thumb { background: var(--line); border-radius: 6px; }

.ref-item {
    display: grid;
    grid-template-columns: 40px 1fr auto;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 8px;
    background: #fff;
    border: 1px solid var(--line);
    font-size: 13.5px;
    transition: all 0.15s ease;
    cursor: pointer;
}
.ref-item:hover {
    border-color: var(--coral);
    background: #fff8f5;
}
.ref-item-num {
    font-family: var(--font-mono);
    color: var(--coral);
    font-weight: 600;
    font-size: 12px;
}
.ref-item-body {
    color: var(--ink-soft);
    line-height: 1.45;
}
.ref-item-body strong { color: var(--ink); font-weight: 600; }
.ref-item-year {
    font-family: var(--font-mono);
    color: var(--ink-mute);
    font-size: 12px;
}

/* Ref modal */
.ref-modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease;
}
.ref-modal.open {
    opacity: 1;
    pointer-events: auto;
}
.ref-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(20, 32, 30, 0.55);
    backdrop-filter: blur(4px);
}
.ref-modal-card {
    position: relative;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 30px 32px 24px;
    max-width: 560px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    transform: translateY(16px);
    transition: transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.ref-modal.open .ref-modal-card { transform: translateY(0); }
.ref-modal-close {
    position: absolute;
    top: 10px; right: 12px;
    background: transparent;
    border: none;
    font-size: 28px;
    color: var(--ink-mute);
    cursor: pointer;
    width: 34px; height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    padding: 0;
}
.ref-modal-close:hover {
    background: var(--bg-deep);
    color: var(--ink);
}
.ref-modal-kicker {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--coral);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 8px;
}
.ref-modal-title {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    margin: 0 0 10px;
    color: var(--ink);
    line-height: 1.25;
    letter-spacing: -0.005em;
}
.ref-modal-authors {
    font-size: 14px;
    color: var(--ink-soft);
    margin: 0 0 6px;
    font-style: italic;
}
.ref-modal-venue {
    font-size: 13.5px;
    color: var(--ink-mute);
    margin: 0 0 18px;
    font-family: var(--font-mono);
}
.ref-modal-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.ref-modal-actions a {
    padding: 7px 14px;
    border-radius: 6px;
    background: var(--bg-deep);
    color: var(--teal-deep);
    font-size: 13px;
    font-weight: 600;
    transition: all 0.15s ease;
}
.ref-modal-actions a:hover {
    background: var(--teal-deep);
    color: #fff;
}

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
    margin-top: 80px;
    padding: 28px 0;
    border-top: 1px solid var(--line);
}
.footer-inner {
    max-width: var(--content-max);
    margin: 0 auto;
    font-size: 13px;
    color: var(--ink-mute);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1100px) {
    .content { padding: 40px 36px 64px; }
    .hero-title { font-size: 48px; }
    .section-head h2 { font-size: 32px; }
    .teaser { grid-template-columns: 1fr; }
    .teaser-vs { display: none; }
    .finding-card { flex-direction: column; }
    .vs-grid { grid-template-columns: 1fr; }
    .vs-center { flex-direction: row; justify-content: center; padding: 6px 0; }
    .vs-line { display: none; }
    .reversal-flip { grid-template-columns: 1fr; }
    .reversal-arrows { transform: rotate(90deg); text-align: center; }
}

@media (max-width: 820px) {
    :root { --sidebar-w: 0px; }
    .sidebar {
        transform: translateX(-100%);
        width: 260px;
    }
    .sidebar.open {
        transform: translateX(0);
        width: 260px;
    }
    .content {
        margin-left: 0;
        padding: 72px 22px 60px;
    }
    .sidebar-toggle { display: flex; }
    .hero { min-height: auto; padding-top: 24px; }
    .hero-title { font-size: 36px; }
    .section-head h2 { font-size: 26px; }
    .axes-grid { grid-template-columns: 1fr; }
    .finding-card { padding: 22px; }
    .trap-flow { gap: 8px; }
    .trap-arrow svg { display: none; }
    .pipeline-grid { grid-template-columns: 1fr; gap: 24px; }
    .pipeline-grid::before { display: none; }
}