:root {
    --serif: "Source Serif 4", Georgia, "Times New Roman", Times, serif;
    --sans: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, Helvetica, sans-serif;
    --hand: "Caveat", "Comic Sans MS", cursive;
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --bg: #FAF9F5;
    --text: #141413;
    --muted: #73726C;
    --soft: #F5F4ED;
    --oat: #E3DACC;
    --line: rgba(20, 20, 19, 0.13);
    --panel: rgba(255, 255, 255, 0.72);
    --panel-strong: #FFFFFF;
    --accent: #C15F3C;
    --accent-dark: #9A4A2D;
    --graphite: #3D3D3A;
    --green: #4F7259;
    --amber: #D97757;
    --shadow: rgba(20, 20, 19, 0.08);
    --paper: #FAF9F5;
}

[data-theme="dark"] {
    --bg: #141413;
    --text: #FAF9F5;
    --muted: #A3A096;
    --soft: #1E1D1B;
    --oat: #3A3733;
    --line: rgba(250, 249, 245, 0.15);
    --panel: rgba(32, 31, 29, 0.85);
    --panel-strong: #232220;
    --accent: #D97757;
    --accent-dark: #E8987C;
    --graphite: #D6D3CB;
    --green: #8CB89A;
    --amber: #E08D67;
    --shadow: rgba(0, 0, 0, 0.4);
    --paper: #141413;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background:
        radial-gradient(circle at 78% 12%, rgba(217, 119, 87, 0.06), transparent 32%),
        radial-gradient(circle at 12% 88%, rgba(227, 218, 204, 0.4), transparent 30%),
        var(--bg);
    color: var(--text);
    font-family: var(--serif);
}

[data-theme="dark"] body {
    background:
        radial-gradient(circle at 78% 12%, rgba(217, 119, 87, 0.05), transparent 32%),
        var(--bg);
}

/* paper grain */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 90;
    pointer-events: none;
    opacity: 0.05;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    z-index: 50;
    background: linear-gradient(90deg, var(--accent), var(--amber));
    transform: scaleX(0);
    transform-origin: left center;
}

.easter-toast {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 60;
    max-width: 320px;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel-strong);
    color: var(--text);
    box-shadow: 0 22px 70px var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(14px);
    transition: opacity 180ms ease, transform 180ms ease;
    font-family: var(--sans);
}

.easter-toast.show {
    opacity: 1;
    transform: translateY(0);
}

.control-mode {
    --accent: #0d4f8f;
    --amber: #c89b44;
}

.control-mode[data-theme="dark"] {
    --accent: #7db4ec;
    --accent-dark: #a8ccf2;
    --amber: #e3c47e;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

button,
input,
select {
    font: inherit;
}

.mind-shell {
    width: min(1840px, calc(100% - 56px));
    margin: 0 auto;
    padding: 0 0 80px;
}

.top-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
    min-height: 76px;
    padding: 0;
    border-bottom: 1px solid var(--line);
}

.brand-link {
    display: inline-flex;
    align-items: center;
    gap: 18px;
    color: var(--text);
    font-size: 1.34rem;
    font-weight: 650;
    letter-spacing: 0;
}

.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border: 2px solid var(--text);
    color: var(--text);
    font-size: 1rem;
    line-height: 0.9;
    text-align: center;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 34px;
    color: var(--muted);
    align-self: stretch;
    font-family: var(--sans);
    font-size: 1rem;
    font-weight: 600;
}

.nav-links a {
    position: relative;
    display: inline-flex;
    align-items: center;
    color: var(--muted);
    min-height: 76px;
}

.nav-links a.active {
    color: var(--accent);
}

.nav-links a.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 4px;
    background: var(--accent);
}

.theme-toggle {
    border: 1px solid var(--line);
    background: var(--panel);
    color: var(--text);
    border-radius: 999px;
    padding: 8px 13px;
    cursor: pointer;
    font-size: 0.85rem;
}

.lang-switch {
    display: inline-flex;
    gap: 3px;
    padding: 3px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.45);
}

.lang-switch button {
    min-width: 38px;
    min-height: 30px;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 800;
}

.lang-switch button.active {
    background: var(--accent);
    color: var(--paper);
}

.nav-profile {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 13px;
    border: 1.6px dashed var(--accent);
    border-radius: 3px;
    transform: rotate(-3deg);
    color: var(--accent);
    font-family: var(--mono, monospace);
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    line-height: 1.25;
    transition: transform 220ms var(--ease-out, ease), background 180ms ease, color 180ms ease, box-shadow 220ms ease;
}

.nav-profile .np-ast {
    font-size: 1.05rem;
    line-height: 1;
    transition: transform 600ms var(--ease-out, ease);
}

.nav-profile .np-text {
    display: grid;
    text-align: left;
}

.nav-profile .np-text b {
    font-weight: 800;
    letter-spacing: 0.18em;
}

.nav-profile:hover {
    transform: rotate(0deg) translateY(-1px);
    background: var(--accent);
    color: var(--paper);
    box-shadow: 3px 3px 0 var(--line);
}

.nav-profile:hover .np-ast {
    transform: rotate(180deg);
}

.hero {
    min-height: calc(100svh - 180px);
    display: grid;
    grid-template-columns: minmax(420px, 0.92fr) minmax(520px, 1.08fr);
    align-items: center;
    gap: 28px;
    border-bottom: 1px solid var(--line);
    padding: 42px 38px 34px;
    overflow: hidden;
}

.hero-copy {
    max-width: 760px;
}

.hero h1 {
    margin: 0;
    max-width: 800px;
    color: var(--text);
    font-size: clamp(5.3rem, 7.1vw, 8.8rem);
    font-weight: 500;
    line-height: 0.91;
    letter-spacing: 0;
}

.hero-subtitle {
    max-width: 720px;
    margin: 30px 0 0;
    color: var(--accent);
    font-family: var(--sans);
    font-size: clamp(1.25rem, 1.45vw, 1.7rem);
    font-weight: 700;
    line-height: 1.22;
}

.hero-text {
    max-width: 640px;
    margin: 18px 0 0;
    color: var(--graphite);
    font-family: var(--sans);
    font-size: 1.11rem;
    line-height: 1.58;
}

.audience-row {
    margin-top: 44px;
    font-family: var(--sans);
}

.audience-row p {
    margin: 0 0 18px;
    color: var(--graphite);
    font-size: 0.86rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.audience-row div {
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    color: var(--muted);
}

.audience-row span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
}

.audience-row span::before {
    content: "";
    width: 14px;
    height: 14px;
    border: 1.8px solid rgba(61, 61, 58, 0.65);
    border-radius: 50%;
    box-shadow: inset 0 0 0 4px var(--bg);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 34px;
    font-family: var(--sans);
}

.primary-action,
.secondary-action,
.manual-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    min-width: 230px;
    padding: 0 24px;
    border-radius: 4px;
    border: 1px solid var(--accent);
    font-weight: 700;
}

.primary-action::after {
    content: "->";
    margin-left: 18px;
}

.secondary-action::after {
    content: "open";
    margin-left: 18px;
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.manual-action {
    border-color: var(--line);
    color: var(--text);
    background: var(--panel);
    cursor: pointer;
    font: inherit;
}

.manual-action::after {
    content: "Access";
    margin-left: 16px;
    color: var(--amber);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.primary-action {
    background: var(--accent);
    color: #fff;
}

.secondary-action {
    background: transparent;
    color: var(--accent);
}

.closing-actions button.primary-action {
    cursor: pointer;
    font: inherit;
    font-weight: 700;
}

#closing-manual::after {
    content: "Access";
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

#closing-map::after {
    content: "->";
    color: var(--accent);
    font-size: inherit;
    font-weight: inherit;
    letter-spacing: normal;
    text-transform: none;
}

.mind-map {
    position: relative;
    min-width: 0;
    min-height: 620px;
    overflow: visible;
}

.orbit-map:hover .orbit-lines,
.orbit-map:hover .orbit-icon,
.orbit-map:hover::before,
.orbit-map:hover::after {
    animation-play-state: paused;
}

.orbit-map::before,
.orbit-map::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 10px rgba(193, 95, 60, 0.08);
    --orbit-radius: 210px;
    margin: -6px 0 0 -6px;
    animation: planetDot 18s linear infinite;
    z-index: 4;
}

.orbit-map::after {
    width: 9px;
    height: 9px;
    opacity: 0.72;
    --orbit-radius: 150px;
    margin: -4px 0 0 -4px;
    animation-duration: 26s;
    animation-direction: reverse;
}

.orbit-lines {
    position: absolute;
    inset: 20px 0 0;
    width: 100%;
    height: calc(100% - 20px);
    color: rgba(193, 95, 60, 0.55);
    overflow: visible;
}

.orbit-lines line {
    stroke: rgba(61, 61, 58, 0.48);
    stroke-width: 1.35;
}

.planet-orbit {
    fill: none;
    stroke: rgba(193, 95, 60, 0.11);
    stroke-width: 1;
    transform-box: fill-box;
    transform-origin: center;
    animation: orbitSpin 28s linear infinite;
}

.orbit-two {
    stroke-dasharray: 5 10;
    animation-duration: 42s;
    animation-direction: reverse;
}

.dotted {
    fill: none;
    stroke: rgba(61, 61, 58, 0.35);
    stroke-width: 1.25;
    stroke-dasharray: 4 7;
}

.map-core {
    position: absolute;
    top: 50%;
    left: 50%;
    display: grid;
    place-items: center;
    width: 178px;
    height: 178px;
    transform: translate(-50%, -50%);
    border: 2.5px solid var(--accent);
    clip-path: polygon(25% 5%, 75% 5%, 100% 32%, 100% 68%, 75% 95%, 25% 95%, 0 68%, 0 32%);
    background: var(--panel);
    box-shadow: 0 24px 74px rgba(193, 95, 60, 0.08);
    text-align: center;
    z-index: 2;
}

.brain-icon {
    display: inline-grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border: 2px solid var(--text);
    border-radius: 50%;
    color: var(--text);
    font-family: var(--sans);
    font-size: 0.9rem;
    font-weight: 800;
}

.map-core strong {
    display: block;
    margin-top: -48px;
    font-family: var(--sans);
    font-size: 1.08rem;
    line-height: 1.18;
    text-transform: uppercase;
}

.orbit-item {
    position: absolute;
    display: grid;
    grid-template-columns: 76px minmax(0, 1fr);
    align-items: center;
    gap: 18px;
    min-width: 230px;
    z-index: 3;
    font-family: var(--sans);
}

.orbit-icon {
    display: grid;
    place-items: center;
    width: 76px;
    height: 76px;
    border: 2.5px solid rgba(193, 95, 60, 0.58);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.92);
    color: var(--accent);
    box-shadow: 0 18px 54px rgba(193, 95, 60, 0.09);
    animation: planetPulse 5.5s ease-in-out infinite;
}

.orbit-icon svg {
    width: 38px;
    height: 38px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.orbit-copy h3 {
    margin: 0 0 10px;
    color: var(--text);
    font-size: 1.22rem;
    line-height: 1.1;
}

.orbit-copy ul {
    margin: 0;
    padding-left: 0;
    color: var(--graphite);
    font-size: 0.92rem;
    line-height: 1.48;
    list-style-position: inside;
}

.item-context {
    top: 36px;
    left: 47%;
}

.item-context .orbit-copy {
    order: 2;
}

.item-memory {
    top: 190px;
    right: 0;
}

.item-verify {
    right: 0;
    bottom: 122px;
}

.item-research {
    left: 49%;
    bottom: 24px;
}

.item-tools {
    left: 10px;
    bottom: 116px;
    grid-template-columns: minmax(0, 1fr) 76px;
    text-align: right;
}

.item-tools .orbit-icon,
.item-skills .orbit-icon {
    order: 2;
}

.item-skills {
    top: 186px;
    left: -18px;
    grid-template-columns: minmax(0, 1fr) 76px;
    text-align: right;
}

.preview-strip {
    display: grid;
    grid-template-columns: minmax(0, 1.03fr) minmax(0, 0.97fr);
    gap: 36px;
    padding: 24px 0 34px;
    border-bottom: 1px solid var(--line);
    font-family: var(--sans);
}

.preview-course,
.preview-library {
    min-width: 0;
}

.preview-library {
    padding-left: 36px;
    border-left: 1px solid var(--line);
}

.preview-head {
    display: flex;
    align-items: baseline;
    gap: 28px;
    margin-bottom: 24px;
}

.preview-head h2 {
    margin: 0;
    color: var(--accent);
    font-size: 1rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.preview-head p,
.preview-head a {
    margin: 0;
    color: var(--muted);
    font-size: 0.98rem;
}

.preview-head a {
    margin-left: auto;
    color: var(--accent);
    font-weight: 700;
}

.timeline-preview {
    position: relative;
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 14px;
}

.timeline-preview::before {
    content: "";
    position: absolute;
    top: 25px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent);
    opacity: 0.82;
}

.timeline-preview article {
    position: relative;
    display: grid;
    justify-items: center;
    gap: 12px;
    min-height: 210px;
    text-align: center;
    color: var(--muted);
}

.timeline-preview span {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    z-index: 1;
}

.timeline-preview article:last-child span {
    background: var(--panel);
    color: var(--accent);
    border: 3px solid rgba(193, 95, 60, 0.6);
}

.timeline-preview strong {
    color: var(--text);
    font-size: 1rem;
}

.timeline-preview p {
    margin: 0;
    font-size: 0.92rem;
    line-height: 1.45;
}

.mock-search {
    min-height: 50px;
    display: flex;
    align-items: center;
    padding: 0 18px;
    border: 1px solid var(--line);
    border-radius: 4px;
    color: var(--muted);
    background: var(--panel);
    box-shadow: 0 8px 30px var(--shadow);
}

.library-preview-table {
    width: 100%;
    margin-top: 18px;
    border-collapse: collapse;
    background: rgba(255, 255, 255, 0.78);
    font-size: 0.92rem;
}

.library-preview-table th,
.library-preview-table td {
    padding: 13px 12px;
    border-bottom: 1px solid var(--line);
    text-align: left;
}

.library-preview-table th {
    color: var(--muted);
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

@keyframes orbitSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes planetPulse {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

@keyframes planetDot {
    from { transform: rotate(0deg) translateX(var(--orbit-radius)) rotate(0deg); }
    to { transform: rotate(360deg) translateX(var(--orbit-radius)) rotate(-360deg); }
}

.metric,
.principle,
.part-card,
.lab-card {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 420ms ease, transform 420ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.metric.is-visible,
.principle.is-visible,
.part-card.is-visible,
.lab-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .planet-orbit,
    .orbit-icon,
    .orbit-map::before,
    .orbit-map::after {
        animation: none;
    }

    .metric,
    .principle,
    .part-card,
    .lab-card,
    .easter-toast {
        transition: none;
    }
}

.metrics {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 1px;
    margin: 0 0 84px;
    border: 1px solid var(--line);
    background: var(--line);
}

.metric {
    min-height: 112px;
    padding: 20px;
    background: var(--panel);
}

.metric strong {
    display: block;
    font-size: 2.2rem;
    font-weight: 500;
}

.metric span {
    color: var(--muted);
    font-size: 0.92rem;
}

.part-atlas {
    margin-top: 84px;
    padding-top: 12px;
}

.part-strip {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(210px, 250px);
    gap: 16px;
    overflow-x: auto;
    padding: 4px 2px 18px;
    scroll-snap-type: x mandatory;
}

.part-card {
    min-height: 390px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
    box-shadow: 0 22px 70px var(--shadow);
    cursor: pointer;
    overflow: hidden;
    scroll-snap-align: start;
}

.part-card:hover {
    border-color: var(--accent);
    box-shadow: 0 28px 90px rgba(20, 20, 19, 0.18);
}

.part-card img {
    width: 100%;
    height: 286px;
    object-fit: cover;
    object-position: top center;
    display: block;
}

.part-card div {
    padding: 14px 16px 18px;
}

.part-card span {
    color: var(--accent);
    font-family: var(--sans);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.part-card h3 {
    margin: 8px 0;
    font-size: 1.05rem;
    line-height: 1.18;
}

.part-card p {
    margin: 0;
    color: var(--muted);
    font-size: 0.86rem;
}

.section-head {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 30px;
    align-items: start;
    margin-bottom: 30px;
}

.section-label {
    margin: 9px 0 0;
    color: var(--muted);
    font-size: 0.78rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.section-head h2 {
    margin: 0;
    max-width: 790px;
    font-size: clamp(2.2rem, 4.4vw, 4.5rem);
    font-weight: 500;
    line-height: 1.02;
    letter-spacing: 0;
}

.principles,
.course-section,
.library-section,
.sources-section {
    margin-top: 84px;
    padding-top: 12px;
}

.principle-list {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: 1px solid var(--line);
}

.principle {
    min-height: 260px;
    padding: 24px 24px 26px 0;
    border-right: 1px solid var(--line);
}

.principle:last-child {
    border-right: 0;
}

.principle span {
    color: var(--accent);
    font-size: 0.9rem;
}

.principle h3 {
    margin: 48px 0 12px;
    font-size: 1.24rem;
    line-height: 1.2;
}

.principle p {
    margin: 0;
    color: var(--muted);
    line-height: 1.65;
}

.course-layout {
    display: grid;
    grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1fr);
    gap: 38px;
}

.module-list {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.module-button {
    width: 100%;
    display: grid;
    grid-template-columns: 40px minmax(0, 1fr) auto;
    gap: 14px;
    align-items: center;
    border: 1px solid var(--line);
    background: var(--panel);
    color: var(--text);
    padding: 15px;
    cursor: pointer;
    text-align: left;
}

.module-button:hover,
.module-button.active {
    border-color: var(--accent);
    background: var(--panel-strong);
}

.module-button span,
.module-button em {
    color: var(--muted);
    font-style: normal;
    font-size: 0.86rem;
}

.module-detail {
    position: relative;
    overflow: hidden;
    min-height: 448px;
    padding: 34px;
    border: 1px solid var(--line);
    background: var(--panel);
}

.detail-cover {
    float: right;
    width: min(34%, 250px);
    margin: 0 0 22px 28px;
    border: 1px solid var(--line);
    box-shadow: 0 20px 60px var(--shadow);
}

.detail-stage {
    margin: 0 0 16px;
    color: var(--accent);
    font-size: 0.86rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.module-detail h3 {
    margin: 0;
    max-width: 720px;
    font-size: clamp(2.1rem, 4vw, 4rem);
    font-weight: 500;
    line-height: 1.04;
}

.detail-promise {
    margin: 22px 0 28px;
    max-width: 680px;
    color: var(--graphite);
    font-size: 1.24rem;
    line-height: 1.45;
}

.module-detail h4 {
    margin: 28px 0 10px;
    font-size: 0.92rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.module-detail ul {
    margin: 0;
    padding-left: 20px;
    color: var(--muted);
    line-height: 1.7;
}

.module-detail p:not(.detail-stage):not(.detail-promise) {
    color: var(--muted);
    line-height: 1.7;
}

.control-row {
    display: grid;
    grid-template-columns: minmax(260px, 1.25fr) repeat(4, minmax(150px, 0.62fr));
    gap: 14px;
    margin-bottom: 22px;
}

.control-row-slim {
    grid-template-columns: minmax(260px, 1.45fr) minmax(170px, 0.45fr);
    margin-bottom: 14px;
}

.topic-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 22px;
}

.topic-chip {
    border: 1px solid var(--line);
    border-radius: 999px;
    background: transparent;
    color: var(--muted);
    padding: 8px 15px;
    cursor: pointer;
    font-family: var(--mono, monospace);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: border-color 160ms ease, background 160ms ease, color 160ms ease, transform 200ms var(--ease-out, ease);
}

.topic-chip i {
    font-style: normal;
    color: var(--amber);
}

.topic-chip:hover {
    border-color: var(--accent);
    color: var(--text);
    transform: translateY(-1px);
}

.topic-chip.active {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--paper);
}

.topic-chip.active i {
    color: var(--paper);
}

.control-row label {
    display: grid;
    gap: 7px;
    color: var(--muted);
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.control-row input,
.control-row select,
.source-toolbar select {
    min-height: 46px;
    border: 1px solid var(--line);
    background: var(--panel);
    color: var(--text);
    padding: 0 13px;
    outline: none;
}

.control-row input:focus,
.control-row select:focus,
.source-toolbar select:focus {
    border-color: var(--accent);
}

.record-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.library-meta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin: 0 0 16px;
    color: var(--muted);
    font-family: var(--sans);
}

.library-meta-row p {
    margin: 0;
}

.library-meta-row a {
    color: var(--accent);
    font-weight: 800;
}

.library-workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 430px);
    gap: 18px;
    align-items: start;
}

.library-results {
    display: grid;
    gap: 10px;
    max-height: 720px;
    overflow-y: auto;
    padding-right: 6px;
    scrollbar-gutter: stable;
}

.library-row {
    width: 100%;
    display: block;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
    color: var(--text);
    cursor: pointer;
    text-align: left;
    box-shadow: 0 16px 48px var(--shadow);
}

.library-row:hover,
.library-row.active {
    border-color: var(--accent);
    background: var(--panel-strong);
}

.library-row h3 {
    margin: 14px 0 8px;
    font-size: 1.22rem;
    line-height: 1.2;
}

.library-row p {
    margin: 0 0 14px;
    color: var(--muted);
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.library-load-more {
    min-height: 46px;
    border: 1px solid var(--accent);
    border-radius: 8px;
    background: transparent;
    color: var(--accent);
    cursor: pointer;
    font-weight: 800;
}

.library-load-more:hover {
    background: var(--panel-strong);
}

.library-inspector {
    position: sticky;
    top: 18px;
    min-height: 540px;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
    box-shadow: 0 22px 70px var(--shadow);
    max-height: 720px;
    overflow-y: auto;
}

.detail-header h3 {
    margin: 0;
    font-size: clamp(1.8rem, 3.2vw, 3rem);
    line-height: 1.04;
}

.detail-author {
    margin: 12px 0 0;
    color: var(--muted);
    font-family: var(--sans);
}

.detail-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 18px 0;
}

.detail-link {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--accent);
    background: var(--panel-strong);
    font-family: var(--sans);
    font-size: 0.88rem;
    font-weight: 800;
}

.library-metric-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    margin: 18px 0;
}

.library-metric {
    min-height: 74px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.42);
}

.library-metric span {
    display: block;
    color: var(--muted);
    font-family: var(--sans);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.library-metric strong {
    display: block;
    margin-top: 8px;
    font-size: 1.2rem;
}

.empty-inspector {
    display: grid;
    min-height: 360px;
    align-content: center;
    color: var(--muted);
    text-align: center;
}

.empty-inspector p {
    margin: 0 0 8px;
    color: var(--text);
    font-size: 1.3rem;
}

.record-card {
    display: flex;
    flex-direction: column;
    min-height: 285px;
    padding: 22px;
    border: 1px solid var(--line);
    background: var(--panel);
}

.record-meta,
.record-foot,
.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.record-meta span,
.tag-row span {
    display: inline-flex;
    border: 1px solid var(--line);
    padding: 5px 8px;
    color: var(--muted);
    font-size: 0.76rem;
}

.record-card h3 {
    margin: 24px 0 12px;
    font-size: 1.32rem;
    line-height: 1.2;
}

.record-card p {
    margin: 0 0 20px;
    color: var(--muted);
    line-height: 1.58;
}

.record-foot {
    margin-top: auto;
    justify-content: space-between;
    border-top: 1px solid var(--line);
    padding-top: 14px;
    color: var(--muted);
    font-size: 0.92rem;
}

.tag-row {
    margin-top: 14px;
}

.muted-link {
    color: var(--muted);
}

.source-toolbar {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: center;
    margin-bottom: 18px;
}

.source-toolbar p {
    margin: 0;
    color: var(--muted);
}

.source-list {
    display: grid;
    border-top: 1px solid var(--line);
}

.source-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 210px;
    gap: 24px;
    padding: 22px 0;
    border-bottom: 1px solid var(--line);
}

.source-meta {
    margin: 0 0 7px;
    color: var(--accent);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.source-row h3 {
    margin: 0 0 8px;
    font-size: 1.26rem;
}

.source-row p {
    margin: 0;
    color: var(--muted);
    line-height: 1.55;
}

.source-status {
    display: grid;
    justify-items: end;
    align-content: start;
    gap: 8px;
    text-align: right;
}

.source-status span {
    color: var(--text);
}

.lab-section {
    margin-top: 84px;
    padding-top: 12px;
}

.lab-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.lab-card {
    min-height: 390px;
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
    background: var(--panel);
    box-shadow: 0 22px 70px var(--shadow);
}

.lab-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    display: block;
}

.lab-card div {
    padding: 20px;
}

.lab-card span {
    color: var(--amber);
    font-family: var(--sans);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.lab-card h3 {
    margin: 10px 0;
    font-size: 1.42rem;
}

.lab-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.58;
}

.source-status small {
    color: var(--muted);
}

.empty-state {
    grid-column: 1 / -1;
    margin: 0;
    padding: 28px;
    border: 1px solid var(--line);
    background: var(--panel);
    color: var(--muted);
}

@media (max-width: 1500px) {
    .mind-shell {
        width: min(100% - 40px, 1440px);
    }

    .hero {
        grid-template-columns: minmax(390px, 0.9fr) minmax(500px, 1.1fr);
        gap: 18px;
        padding-inline: 28px;
    }

    .hero h1 {
        font-size: clamp(4.4rem, 6.3vw, 7.2rem);
    }

    .mind-map {
        transform: scale(0.9);
        transform-origin: center right;
    }

    .orbit-item {
        min-width: 210px;
        gap: 12px;
    }

    .orbit-copy h3 {
        font-size: 1.08rem;
    }

    .orbit-copy ul {
        font-size: 0.85rem;
    }
}

@media (max-width: 960px) {
    .mind-shell {
        width: min(100% - 28px, 820px);
    }

    .hero,
    .course-layout,
    .section-head,
    .preview-strip,
    .library-workspace {
        grid-template-columns: 1fr;
    }

    .hero {
        min-height: auto;
        padding: 40px 0 46px;
    }

    .mind-map {
        min-height: 620px;
    }

    .metrics,
    .principle-list,
    .record-grid,
    .lab-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .preview-library {
        padding-left: 0;
        border-left: 0;
        border-top: 1px solid var(--line);
        padding-top: 28px;
    }

    .control-row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .control-row .search-field {
        grid-column: 1 / -1;
    }

    .library-inspector {
        position: relative;
        top: auto;
    }
}

@media (max-width: 640px) {
    .mind-shell {
        width: min(100% - 22px, 520px);
        padding-top: 18px;
    }

    .top-nav,
    .nav-links,
    .hero-actions,
    .source-toolbar,
    .preview-head,
    .library-meta-row {
        align-items: flex-start;
        flex-direction: column;
    }

    .top-nav {
        min-height: auto;
        padding: 14px 0;
    }

    .brand-link {
        font-size: 1.1rem;
    }

    .brand-mark {
        width: 42px;
        height: 42px;
        font-size: 0.86rem;
    }

    .nav-links {
        gap: 10px;
        font-size: 1rem;
    }

    .nav-links a {
        min-height: 28px;
    }

    .nav-links a.active::after {
        height: 2px;
    }

    .hero h1 {
        font-size: clamp(3.2rem, 17vw, 4.8rem);
    }

    .hero-subtitle,
    .hero-text {
        font-size: 1.05rem;
    }

    .audience-row div {
        gap: 10px;
    }

    .mind-map {
        display: grid;
        gap: 14px;
        min-height: auto;
        margin-top: 8px;
    }

    .orbit-lines {
        display: none;
    }

    .map-core {
        position: relative;
        top: auto;
        left: auto;
        justify-self: center;
        width: 142px;
        height: 142px;
        transform: none;
        margin-bottom: 8px;
    }

    .map-core strong {
        margin-top: -38px;
        font-size: 0.94rem;
    }

    .brain-icon {
        width: 38px;
        height: 38px;
        font-size: 0.78rem;
    }

    .orbit-item,
    .item-tools,
    .item-skills {
        position: relative;
        top: auto;
        right: auto;
        bottom: auto;
        left: auto;
        grid-template-columns: 58px minmax(0, 1fr);
        min-width: 0;
        text-align: left;
        padding: 12px 0;
        border-top: 1px solid var(--line);
    }

    .item-tools .orbit-icon,
    .item-skills .orbit-icon {
        order: 0;
    }

    .orbit-icon {
        width: 58px;
        height: 58px;
    }

    .orbit-icon svg {
        width: 28px;
        height: 28px;
    }

    .orbit-copy h3 {
        font-size: 1.1rem;
    }

    .metrics,
    .principle-list,
    .record-grid,
    .source-row,
    .timeline-preview,
    .lab-grid,
    .control-row {
        grid-template-columns: 1fr;
    }

    .control-row .search-field {
        grid-column: auto;
    }

    .library-metric-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .detail-cover {
        float: none;
        width: 100%;
        max-height: 320px;
        object-fit: cover;
        object-position: top center;
        margin: 0 0 18px;
    }

    .timeline-preview::before {
        left: 23px;
        top: 0;
        bottom: 0;
        right: auto;
        width: 3px;
        height: auto;
    }

    .timeline-preview article {
        grid-template-columns: 48px minmax(0, 1fr);
        justify-items: start;
        min-height: auto;
        text-align: left;
    }

    .timeline-preview article p {
        grid-column: 2;
    }

    .library-preview-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    .principle {
        min-height: auto;
        border-right: 0;
        border-bottom: 1px solid var(--line);
        padding-right: 0;
    }

    .module-button {
        grid-template-columns: 32px minmax(0, 1fr);
    }

    .module-button em {
        grid-column: 2;
    }

    .module-detail {
        padding: 24px;
    }

    .source-status {
        justify-items: start;
        text-align: left;
    }
}

/* ============================================================
   2026 polish layer: kinetic type, motion, marquee, easter eggs
   ============================================================ */

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

body {
    -webkit-font-smoothing: antialiased;
}

.hero h1 {
    font-family: var(--serif);
    font-variation-settings: "opsz" 144;
}

/* Kinetic hero title: words rise out of clipped lines */
.hero h1 .word {
    display: inline-block;
    overflow: hidden;
    vertical-align: bottom;
    margin-right: 0.22em;
    padding-bottom: 0.06em;
}

.hero h1 .word:last-child {
    margin-right: 0;
}

.hero h1 .word > i {
    display: inline-block;
    font-style: normal;
    transform: translateY(112%) rotate(2.5deg);
    animation: wordRise 900ms var(--ease-out) forwards;
    animation-delay: var(--d, 0ms);
}

.hero h1 .word:last-child > i {
    color: var(--accent);
}

@keyframes wordRise {
    to { transform: translateY(0) rotate(0deg); }
}

.hero-subtitle,
.hero-text,
.audience-row,
.hero-actions {
    opacity: 0;
    transform: translateY(16px);
    animation: heroFade 760ms var(--ease-out) forwards;
}

.hero-subtitle { animation-delay: 480ms; }
.hero-text { animation-delay: 580ms; }
.audience-row { animation-delay: 680ms; }
.hero-actions { animation-delay: 780ms; }

@keyframes heroFade {
    to { opacity: 1; transform: translateY(0); }
}

.orbit-map {
    opacity: 0;
    animation: heroFade 900ms var(--ease-out) 340ms forwards;
}

/* Parallax drift, applied via --par from JS */
.mind-map {
    transform: translateY(var(--par, 0px));
    will-change: transform;
}

@media (max-width: 1500px) {
    .mind-map {
        transform: translateY(var(--par, 0px)) scale(0.9);
    }
}

@media (max-width: 640px) {
    .mind-map {
        transform: none;
        will-change: auto;
    }
}

/* Buttons: sweep + arrow nudge */
.primary-action,
.secondary-action,
.manual-action {
    position: relative;
    overflow: hidden;
    transition: transform 200ms var(--ease-out), box-shadow 200ms var(--ease-out), border-color 200ms ease;
}

.primary-action::after,
.secondary-action::after,
.manual-action::after {
    transition: transform 240ms var(--ease-out);
}

.primary-action:hover,
.secondary-action:hover,
.manual-action:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 34px var(--shadow);
    text-decoration: none;
}

.primary-action:hover::after {
    transform: translateX(6px);
}

.secondary-action:hover {
    background: var(--panel-strong);
}

body.manual-modal-open {
    overflow: hidden;
}

.manual-access-modal {
    position: fixed;
    inset: 0;
    z-index: 120;
    display: grid;
    place-items: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 180ms ease, visibility 180ms ease;
}

.manual-access-modal.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.manual-access-backdrop {
    position: absolute;
    inset: 0;
    border: 0;
    background: rgba(20, 20, 19, 0.62);
    backdrop-filter: blur(8px);
    cursor: pointer;
}

.manual-access-panel {
    position: relative;
    width: min(100%, 560px);
    max-height: calc(100vh - 48px);
    overflow: auto;
    padding: 40px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel-strong);
    box-shadow: 0 28px 90px rgba(20, 20, 19, 0.3);
    font-family: var(--sans);
    transform: translateY(16px) scale(0.98);
    transition: transform 220ms var(--ease-out);
}

.manual-access-modal.open .manual-access-panel {
    transform: translateY(0) scale(1);
}

.manual-access-close {
    position: absolute;
    top: 14px;
    right: 16px;
    width: 38px;
    height: 38px;
    border: 0;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    font: 400 2rem/1 var(--sans);
}

.manual-access-kicker {
    margin: 0 0 12px;
    color: var(--accent);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.manual-access-panel h2 {
    margin: 0 0 12px;
    font: 700 clamp(1.7rem, 4vw, 2.35rem)/1.1 var(--serif);
}

.manual-access-panel > p:not(.manual-access-kicker) {
    color: var(--muted);
    line-height: 1.65;
}

.manual-access-price {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 18px;
    margin: 26px 0 18px;
    padding: 18px 0;
    border-block: 1px solid var(--line);
}

.manual-access-price span {
    color: var(--muted);
    font-size: 0.85rem;
}

.manual-access-price strong {
    color: var(--accent);
    font-size: 1.2rem;
}

.manual-bank-details {
    margin: 0;
}

.manual-bank-details div {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 18px;
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
}

.manual-bank-details dt {
    color: var(--muted);
    font-size: 0.82rem;
}

.manual-bank-details dd {
    margin: 0;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.manual-access-note {
    margin: 20px 0;
    font-size: 0.9rem;
}

.manual-access-confirm {
    width: 100%;
    min-height: 46px;
    border: 1px solid var(--accent);
    border-radius: 4px;
    background: var(--accent);
    color: #fff;
    cursor: pointer;
    font: 700 0.9rem var(--sans);
}

@media (max-width: 640px) {
    .manual-access-modal {
        padding: 14px;
    }

    .manual-access-panel {
        max-height: calc(100vh - 28px);
        padding: 34px 22px 24px;
    }

    .manual-access-price {
        align-items: flex-start;
        flex-direction: column;
        gap: 6px;
    }

    .manual-bank-details div {
        grid-template-columns: 1fr;
        gap: 4px;
    }
}

.theme-toggle,
.lang-switch button {
    transition: transform 160ms var(--ease-out), background 160ms ease, color 160ms ease;
}

.theme-toggle:hover {
    transform: rotate(-4deg) scale(1.04);
    border-color: var(--accent);
}

/* Keyword marquee */
.marquee {
    overflow: hidden;
    border-bottom: 1px solid var(--line);
    padding: 16px 0;
    mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.marquee-track {
    display: inline-flex;
    align-items: center;
    gap: 34px;
    white-space: nowrap;
    animation: marqueeMove 36s linear infinite;
    font-family: var(--sans);
    color: var(--muted);
    font-size: 0.94rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.marquee:hover .marquee-track {
    animation-play-state: paused;
}

.marquee-track i {
    font-style: normal;
    color: var(--amber);
}

.marquee-track span:hover {
    color: var(--accent);
}

@keyframes marqueeMove {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* Scroll reveal system */
.reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
    transition-delay: var(--rd, 0ms);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.section-head h2 {
    text-wrap: balance;
}

/* Card micro-interactions */
.part-card,
.lab-card,
.library-row {
    transition: opacity 420ms ease, transform 320ms var(--ease-out), border-color 180ms ease, box-shadow 320ms var(--ease-out);
}

.part-card:hover,
.lab-card:hover {
    transform: translateY(-6px);
}

.part-card img,
.lab-card img {
    transition: transform 600ms var(--ease-out), filter 600ms ease;
}

.part-card:hover img,
.lab-card:hover img {
    transform: scale(1.045);
}

.lab-card:hover {
    border-color: var(--accent);
    box-shadow: 0 28px 90px rgba(20, 20, 19, 0.18);
}

.library-row:hover {
    transform: translateY(-2px);
}

.module-button {
    transition: border-color 180ms ease, background 180ms ease, transform 220ms var(--ease-out);
}

.module-button:hover {
    transform: translateX(4px);
}

.module-button.active {
    box-shadow: inset 3px 0 0 var(--accent);
}

.module-detail .detail-cover,
.module-detail h3,
.module-detail .detail-promise {
    animation: heroFade 480ms var(--ease-out) both;
}

.module-detail .detail-promise { animation-delay: 90ms; }

/* Metric counters */
.metric strong {
    font-variant-numeric: tabular-nums;
}

/* Closing CTA */
.closing-cta {
    margin-top: 96px;
    padding: 88px 24px 72px;
    border-top: 1px solid var(--line);
    text-align: center;
}

.closing-cta .section-label {
    margin: 0 0 18px;
}

.closing-cta h2 {
    margin: 0 auto;
    max-width: 900px;
    font-size: clamp(2.8rem, 6vw, 6rem);
    font-weight: 500;
    line-height: 1.0;
}

.closing-text {
    max-width: 560px;
    margin: 22px auto 0;
    color: var(--muted);
    font-family: var(--sans);
    font-size: 1.05rem;
    line-height: 1.6;
}

.closing-actions {
    justify-content: center;
    margin-top: 36px;
}

.closing-hint {
    margin: 46px 0 0;
    color: var(--muted);
    font-family: var(--sans);
    font-size: 0.8rem;
    opacity: 0.65;
}

.closing-hint kbd {
    display: inline-block;
    min-width: 18px;
    padding: 2px 5px;
    border: 1px solid var(--line);
    border-bottom-width: 2px;
    border-radius: 4px;
    background: var(--panel);
    font-family: var(--sans);
    font-size: 0.74rem;
}

.mind-footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    padding: 26px 4px 0;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-family: var(--sans);
    font-size: 0.9rem;
}

.mind-footer p {
    margin: 0;
}

/* Easter egg: overdrive mode (click the core 7 times) */
.overdrive .planet-orbit {
    animation-duration: 6s;
}

.overdrive .orbit-two {
    animation-duration: 9s;
}

.overdrive .orbit-map::before {
    animation-duration: 3.5s;
    box-shadow: 0 0 0 10px rgba(217, 119, 87, 0.18);
}

.overdrive .orbit-map::after {
    animation-duration: 5s;
}

.overdrive .map-core {
    box-shadow: 0 0 0 6px rgba(20, 20, 19, 0.12), 0 24px 74px rgba(193, 95, 60, 0.22);
}

.map-core {
    cursor: pointer;
    transition: transform 220ms var(--ease-out), box-shadow 300ms ease;
    user-select: none;
}

.map-core:active {
    transform: translate(-50%, -50%) scale(0.96);
}

@media (max-width: 640px) {
    .map-core:active {
        transform: scale(0.96);
    }
}

/* Particle burst */
.burst-dot {
    position: fixed;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 80;
    animation: burstFly 820ms var(--ease-out) forwards;
}

@keyframes burstFly {
    to {
        transform: translate(var(--bx), var(--by)) scale(0.2);
        opacity: 0;
    }
}

/* Scroll progress: soften */
.scroll-progress {
    transition: transform 80ms linear;
}

/* Reduced motion: kill the party */
@media (prefers-reduced-motion: reduce) {
    .hero h1 .word > i {
        animation: none;
        transform: none;
    }

    .hero-subtitle,
    .hero-text,
    .audience-row,
    .hero-actions,
    .orbit-map {
        animation: none;
        opacity: 1;
        transform: none;
    }

    .marquee-track {
        animation: none;
    }

    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .mind-map {
        transform: none !important;
    }

    .burst-dot {
        display: none;
    }
}

@media (max-width: 640px) {
    .nav-links {
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        gap: 14px;
        row-gap: 6px;
    }

    .closing-cta {
        margin-top: 56px;
        padding: 56px 8px 48px;
    }

    .marquee-track {
        font-size: 0.82rem;
        gap: 22px;
    }
}

/* ============================================================
   Editorial layer: skill library card catalog + source ledger
   ============================================================ */

:root {
    --mono: "JetBrains Mono", "SF Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
    --coral: #b4543e;
}

[data-theme="dark"] {
    --coral: #e09a84;
}

.section-head h2 em {
    font-style: italic;
    color: var(--amber);
    font-weight: 500;
}

.library-section,
.sources-section {
    position: relative;
}

.library-section::before,
.sources-section::before {
    content: attr(data-ornament);
    position: absolute;
    top: -10px;
    right: 8px;
    color: var(--amber);
    opacity: 0.16;
    font-family: var(--serif);
    font-size: clamp(6rem, 9vw, 11rem);
    line-height: 1;
    pointer-events: none;
}

/* Library filters: flat editorial fields */
.control-row {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 16px 0 18px;
    margin-bottom: 26px;
}

.control-row label {
    font-family: var(--mono);
    font-size: 0.7rem;
    letter-spacing: 0.14em;
}

.control-row input,
.control-row select {
    border: 0;
    border-bottom: 1px solid var(--line);
    background: transparent;
    padding: 0 2px;
    min-height: 40px;
    border-radius: 0;
    transition: border-color 160ms ease;
}

.control-row input:focus,
.control-row select:focus {
    border-bottom: 1.5px solid var(--accent);
}

.library-meta-row {
    font-family: var(--mono);
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.library-meta-actions {
    display: inline-flex;
    align-items: center;
    gap: 18px;
}

.random-pull {
    border: 1px solid var(--amber);
    border-radius: 999px;
    background: transparent;
    color: var(--amber);
    padding: 7px 16px;
    cursor: pointer;
    font-family: var(--mono);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: transform 200ms var(--ease-out), background 160ms ease, color 160ms ease;
}

.random-pull::before {
    content: "✳ ";
}

.random-pull:hover {
    background: var(--amber);
    color: var(--paper);
    transform: rotate(-2deg) scale(1.04);
}

/* Library rows: ruled index, not cards */
.library-results {
    gap: 0;
    border-top: 1px solid var(--line);
}

.library-row {
    display: grid;
    grid-template-columns: 58px minmax(0, 1fr) auto;
    gap: 16px;
    align-items: center;
    padding: 18px 10px 18px 2px;
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    animation: rowIn 420ms var(--ease-out) both;
    transition: background 180ms ease, transform 220ms var(--ease-out), box-shadow 180ms ease;
}

.library-row:hover {
    background: var(--panel);
    transform: none;
    border-color: var(--line);
    box-shadow: none;
}

.library-row.active {
    background: var(--panel-strong);
    box-shadow: inset 3px 0 0 var(--amber);
    padding-left: 10px;
}

.row-index {
    font-family: var(--mono);
    font-size: 0.86rem;
    color: var(--amber);
    text-align: center;
}

.row-meta {
    display: block;
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
}

.library-row h3 {
    margin: 7px 0 6px;
    font-family: var(--serif);
    font-size: 1.28rem;
    font-weight: 500;
    line-height: 1.18;
}

.library-row p {
    margin: 0;
    color: var(--muted);
    font-family: var(--sans);
    font-size: 0.9rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.row-end {
    display: grid;
    justify-items: end;
    gap: 10px;
}

.row-tool {
    font-family: var(--mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
    max-width: 130px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.row-arrow {
    color: var(--amber);
    font-size: 1.1rem;
    transform: translateX(-6px);
    opacity: 0;
    transition: transform 240ms var(--ease-out), opacity 240ms ease;
}

.library-row:hover .row-arrow,
.library-row.active .row-arrow {
    transform: translateX(0);
    opacity: 1;
}

@keyframes rowIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.library-load-more {
    margin-top: 16px;
    border: 1px dashed var(--accent);
    border-radius: 0;
    font-family: var(--mono);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

/* Inspector: catalog card */
.library-inspector {
    border-radius: 2px;
    background:
        linear-gradient(var(--panel-strong), var(--panel-strong)) padding-box;
    padding: 0;
    overflow: hidden;
}

.catalog-card {
    position: relative;
    min-height: 540px;
    padding: 26px 26px 30px 34px;
    animation: cardIn 420ms var(--ease-out) both;
}

.catalog-card::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 20px;
    width: 1px;
    background: var(--coral);
    opacity: 0.45;
}

@keyframes cardIn {
    from { opacity: 0; transform: translateY(10px) rotate(0.4deg); }
    to { opacity: 1; transform: translateY(0) rotate(0deg); }
}

.card-rule {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin: 0 0 18px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--coral);
    color: var(--muted);
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.card-rule span:first-child {
    color: var(--coral);
    font-weight: 700;
}

.catalog-card h3 {
    margin: 0;
    font-family: var(--serif);
    font-size: clamp(1.6rem, 2.6vw, 2.4rem);
    font-weight: 500;
    line-height: 1.08;
}

.catalog-card .detail-author {
    margin: 12px 0 0;
    color: var(--muted);
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.04em;
}

.card-summary {
    margin: 16px 0 0;
    color: var(--graphite);
    font-family: var(--sans);
    font-size: 0.98rem;
    line-height: 1.6;
}

.catalog-card h4 {
    margin: 22px 0 8px;
    color: var(--coral);
    font-family: var(--mono);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.catalog-card h4 + p {
    margin: 0;
    color: var(--muted);
    font-family: var(--sans);
    font-size: 0.92rem;
    line-height: 1.6;
}

.card-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    margin: 20px 0 4px;
    padding: 14px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.card-stats dt {
    font-family: var(--mono);
    font-size: 0.64rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
}

.card-stats dd {
    margin: 6px 0 0;
    font-family: var(--serif);
    font-size: 1.3rem;
    font-weight: 500;
}

.catalog-card .tag-row span {
    border-radius: 999px;
    font-family: var(--mono);
    font-size: 0.66rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

/* Source atlas: archival ledger */
.source-toolbar {
    flex-wrap: wrap;
    border-top: 1px solid var(--line);
    padding-top: 16px;
}

.source-toolbar p {
    font-family: var(--mono);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.source-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-end;
}

.source-chip {
    border: 1px solid var(--line);
    border-radius: 999px;
    background: transparent;
    color: var(--muted);
    padding: 7px 14px;
    cursor: pointer;
    font-family: var(--mono);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: border-color 160ms ease, background 160ms ease, color 160ms ease, transform 200ms var(--ease-out);
}

.source-chip i {
    font-style: normal;
    color: var(--amber);
}

.source-chip:hover {
    border-color: var(--accent);
    color: var(--text);
    transform: translateY(-1px);
}

.source-chip.active {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--paper);
}

.source-chip.active i {
    color: var(--paper);
    opacity: 0.75;
}

.source-row {
    grid-template-columns: 52px minmax(0, 1fr) 220px;
    align-items: start;
    animation: rowIn 420ms var(--ease-out) both;
    transition: background 180ms ease;
    padding: 22px 8px;
}

.source-row:hover {
    background: var(--panel);
}

.ledger-no {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--muted);
    padding-top: 4px;
}

.source-meta {
    font-family: var(--mono);
    font-size: 0.66rem;
    letter-spacing: 0.14em;
    color: var(--coral);
}

.source-row h3 {
    font-family: var(--serif);
    font-weight: 500;
}

.source-row .ledger-body p:not(.source-meta) {
    font-family: var(--sans);
    font-size: 0.92rem;
}

.source-status small {
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.04em;
}

.ledger-open {
    font-family: var(--mono);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.stamp {
    border: 1.5px solid var(--muted);
    border-radius: 3px;
    background: transparent;
    color: var(--muted);
    padding: 5px 12px;
    cursor: pointer;
    font-family: var(--mono);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    transform: rotate(-2.5deg);
    transition: transform 200ms var(--ease-out);
}

.stamp:hover {
    transform: rotate(0.5deg) scale(1.05);
}

.stamp[data-stamp="crawled"] { border-color: var(--green); color: var(--green); }
.stamp[data-stamp="seeded"] { border-color: var(--accent); color: var(--accent); }
.stamp[data-stamp="candidate"] { border-color: var(--amber); color: var(--amber); }
.stamp[data-stamp="new"] { border-color: var(--coral); color: var(--coral); }

.stamp.pressed {
    animation: stampPress 420ms var(--ease-out);
}

@keyframes stampPress {
    0% { transform: rotate(-2.5deg) scale(1); }
    35% { transform: rotate(-7deg) scale(1.3); }
    100% { transform: rotate(-2.5deg) scale(1); }
}

@media (max-width: 960px) {
    .library-section::before,
    .sources-section::before {
        font-size: 5rem;
        top: -4px;
    }
}

@media (max-width: 640px) {
    .library-row {
        grid-template-columns: 34px minmax(0, 1fr);
        gap: 10px;
    }

    .row-end {
        grid-column: 2;
        grid-auto-flow: column;
        justify-content: start;
        justify-items: start;
        gap: 12px;
    }

    .source-row {
        grid-template-columns: 34px minmax(0, 1fr);
        gap: 10px;
    }

    .source-status {
        grid-column: 2;
        grid-auto-flow: column;
        justify-content: start;
        justify-items: start;
        align-items: center;
        gap: 14px;
        text-align: left;
        margin-top: 4px;
    }

    .source-chips {
        justify-content: flex-start;
    }

    .catalog-card {
        min-height: auto;
        padding: 20px 18px 24px 28px;
    }

    .card-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (prefers-reduced-motion: reduce) {
    .library-row,
    .source-row,
    .catalog-card {
        animation: none;
    }

    .stamp,
    .stamp.pressed {
        animation: none;
        transform: none;
    }
}

/* ============================================================
   GSAP layer: pinned horizontal manual atlas
   ============================================================ */

.part-atlas.gsap-horizontal {
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
}

.part-atlas.gsap-horizontal .part-strip {
    overflow: visible;
    scroll-snap-type: none;
    will-change: transform;
    grid-auto-columns: minmax(280px, 330px);
}

.part-atlas.gsap-horizontal .part-card {
    min-height: 470px;
}

.part-atlas.gsap-horizontal .part-card img {
    height: 360px;
}

.part-atlas.gsap-horizontal .section-head {
    margin-bottom: 44px;
}

.part-atlas.gsap-horizontal::after {
    content: "scroll";
    display: block;
    margin-top: 30px;
    color: var(--muted);
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    opacity: 0.7;
}

/* ============================================================
   Soul layer: warm ivory system, hand-drawn touches
   ============================================================ */

.hero h1 {
    font-weight: 600;
    letter-spacing: -0.015em;
}

/* hand-drawn squiggle under the accent word */
.hero h1 .word:last-child {
    position: relative;
}

.hero h1 .word:last-child::after {
    content: "";
    position: absolute;
    left: 2%;
    right: 4%;
    bottom: 0.02em;
    height: 0.16em;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 20' preserveAspectRatio='none'%3E%3Cpath d='M3 13 C 30 7, 55 16, 85 11 S 145 6, 197 12' fill='none' stroke='%23D97757' stroke-width='5' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat center / 100% 100%;
    opacity: 0;
    animation: squiggleIn 600ms ease 1100ms forwards;
}

@keyframes squiggleIn {
    from { opacity: 0; transform: scaleX(0.6); transform-origin: left center; }
    to { opacity: 0.95; transform: scaleX(1); }
}

.hero h1 .word:last-child > i {
    color: var(--accent);
}

.hero-subtitle {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 500;
    color: var(--graphite);
}

.section-head h2 {
    font-weight: 600;
    letter-spacing: -0.01em;
}

.section-head h2 em {
    color: var(--accent);
}

.section-label {
    font-family: var(--mono);
    letter-spacing: 0.22em;
}

/* lab cards: pinned snapshots with masking tape */
.lab-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 34px 26px;
    padding-top: 16px;
}

.lab-card {
    position: relative;
    display: block;
    color: var(--text);
    border-radius: 3px;
    background: var(--panel-strong);
    border: 1px solid var(--line);
    box-shadow: 0 14px 40px var(--shadow);
    padding: 12px 12px 0;
    min-height: 0;
}

.lab-card:nth-child(odd) { transform: rotate(-0.55deg); }
.lab-card:nth-child(even) { transform: rotate(0.45deg); }

.lab-card:hover {
    transform: rotate(0deg) translateY(-6px);
    text-decoration: none;
}

.lab-card::before {
    content: "";
    position: absolute;
    top: -12px;
    left: 50%;
    width: 92px;
    height: 26px;
    transform: translateX(-50%) rotate(-2deg);
    background: var(--oat);
    opacity: 0.85;
    box-shadow: 0 1px 3px rgba(20, 20, 19, 0.12);
    z-index: 2;
}

.lab-card img {
    aspect-ratio: 16 / 10;
    border: 1px solid var(--line);
}

.lab-card div {
    padding: 16px 8px 18px;
}

.lab-card span {
    color: var(--accent);
    font-family: var(--mono);
    font-weight: 700;
    font-size: 0.68rem;
    letter-spacing: 0.18em;
}

.lab-card.is-private span {
    color: var(--muted);
}

.lab-card h3 {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 1.3rem;
}

.lab-card p {
    font-family: var(--sans);
    font-size: 0.9rem;
}

a.lab-card h3::after {
    content: " ↗";
    color: var(--accent);
    font-size: 0.85em;
}

/* hand-written hint */
.closing-hint {
    font-family: var(--hand);
    font-size: 1.25rem;
    letter-spacing: 0;
    text-transform: none;
    opacity: 0.8;
    transform: rotate(-1.2deg);
}

/* part cards lean like prints on a wall */
.part-card:nth-child(odd) { transform: rotate(-0.4deg); }
.part-card:nth-child(even) { transform: rotate(0.35deg); }
.part-card { border-radius: 3px; }
.part-card:hover { transform: rotate(0) translateY(-6px); }
.part-card.is-visible { opacity: 1; }
.part-card:not(.is-visible) { opacity: 0; }

.marquee-track i {
    color: var(--accent);
}

.brain-icon {
    border-color: var(--accent);
    color: var(--accent);
}

.map-core {
    border-radius: 6px;
}

.metric strong {
    font-weight: 600;
}

.module-detail h3,
.detail-header h3,
.closing-cta h2 {
    font-weight: 600;
    letter-spacing: -0.01em;
}

@media (max-width: 960px) {
    .lab-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .lab-grid {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    .hero h1 .word:last-child::after {
        animation: none;
        opacity: 0.95;
    }
}

.nav-studio {
    color: var(--accent) !important;
}

.nav-studio::after {
    content: "•";
    margin-left: 5px;
    color: var(--amber);
}