:root {
    --gan-navy: #07111f;
    --gan-deep: #0b1d33;
    --gan-blue: #3b82f6;
    --gan-cyan: #06b6d4;
    --gan-violet: #8b5cf6;
    --gan-red: #ef4444;
    --gan-green: #10b981;
    --gan-gold: #f59e0b;
}

body {
    background: #f5f7fb;
}

.gan-page {
    overflow-x: hidden;
    overflow-y: auto;
}

.gan-page .navbar .container {
    width: min(1240px, 94vw);
}

.gan-page .nav-menu {
    gap: 1.25rem;
    font-size: 0.9rem;
}

.gan-project-hero {
    position: relative;
    padding: 6.5rem 0 5rem;
    color: #f8fbff;
    background:
        radial-gradient(circle at 12% 20%, rgba(6, 182, 212, 0.2), transparent 30%),
        radial-gradient(circle at 86% 18%, rgba(139, 92, 246, 0.23), transparent 34%),
        linear-gradient(145deg, var(--gan-navy), var(--gan-deep) 62%, #10294a);
}

.gan-project-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.22;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: 42px 42px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.65), transparent 95%);
}

.gan-project-hero .container {
    position: relative;
    z-index: 1;
    width: min(1240px, 92vw);
}

.gan-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 2rem;
    color: rgba(248, 251, 255, 0.68);
    font-size: 0.88rem;
}

.gan-breadcrumb a:hover {
    color: #fff;
}

.gan-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.45rem 0.8rem;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.07);
    color: #bae6fd;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.gan-project-hero h1 {
    max-width: 1000px;
    margin: 1.35rem 0 1.25rem;
    font-size: clamp(2.5rem, 6vw, 5.1rem);
    line-height: 1.03;
    letter-spacing: -0.055em;
}

.gan-project-hero .hero-lead {
    max-width: 820px;
    color: rgba(248, 251, 255, 0.78);
    font-size: clamp(1.05rem, 2vw, 1.28rem);
    line-height: 1.75;
}

.gan-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin-top: 2rem;
}

.gan-project-hero .gan-hero-actions .btn-secondary {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.28);
    background: rgba(255, 255, 255, 0.06);
}

.gan-section .gan-hero-actions .btn-primary {
    color: #fff;
    background: var(--accent);
}

.gan-section .gan-hero-actions .btn-secondary {
    color: var(--accent);
    border-color: rgba(37, 99, 235, 0.35);
    background: transparent;
}

.gan-section .gan-hero-actions .btn-secondary:hover {
    background: var(--accent-soft);
}

.gan-metric-strip {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 1px;
    margin-top: 3.5rem;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.12);
}

.gan-metric {
    min-height: 112px;
    padding: 1.25rem;
    background: rgba(7, 17, 31, 0.72);
    backdrop-filter: blur(10px);
}

.gan-metric strong {
    display: block;
    margin-bottom: 0.3rem;
    color: #fff;
    font-size: 1.42rem;
    line-height: 1.2;
}

.gan-metric span {
    color: rgba(248, 251, 255, 0.62);
    font-size: 0.78rem;
}

.gan-content {
    width: min(1240px, 92vw);
    margin: 0 auto;
    padding: 4rem 0 6rem;
}

.gan-layout {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 3.5rem;
    align-items: start;
}

.gan-toc {
    position: sticky;
    top: 108px;
    padding: 1.25rem;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.88);
    box-shadow: 0 22px 60px -50px rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(12px);
}

.gan-toc p {
    margin-bottom: 0.75rem;
    color: var(--text);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.gan-toc ol {
    display: grid;
    gap: 0.25rem;
    padding: 0;
    list-style: none;
}

.gan-toc a {
    display: block;
    padding: 0.42rem 0.5rem;
    border-radius: 8px;
    color: var(--muted);
    font-size: 0.82rem;
    line-height: 1.35;
}

.gan-toc a:hover,
.gan-toc a:focus {
    color: var(--accent-dark);
    background: var(--accent-soft);
}

.gan-article {
    min-width: 0;
}

.gan-section {
    padding: 1rem 0 4.5rem;
    scroll-margin-top: 100px;
}

.gan-section + .gan-section {
    border-top: 1px solid rgba(15, 23, 42, 0.1);
    padding-top: 4.5rem;
}

.gan-kicker {
    display: block;
    margin-bottom: 0.65rem;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.gan-section h2 {
    max-width: 850px;
    margin-bottom: 1.1rem;
    color: var(--text);
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.15;
    letter-spacing: -0.035em;
}

.gan-section h3 {
    margin: 2.4rem 0 0.85rem;
    color: var(--text);
    font-size: clamp(1.3rem, 2vw, 1.65rem);
    line-height: 1.3;
}

.gan-section h4 {
    margin: 1.4rem 0 0.55rem;
    color: var(--text);
    font-size: 1.02rem;
}

.gan-section p,
.gan-section li {
    color: #374151;
}

.gan-section p + p {
    margin-top: 1rem;
}

.gan-lead {
    max-width: 860px;
    color: var(--muted) !important;
    font-size: 1.08rem;
}

.gan-callout {
    margin: 1.6rem 0;
    padding: 1.35rem 1.45rem;
    border-left: 4px solid var(--gan-blue);
    border-radius: 0 14px 14px 0;
    background: rgba(59, 130, 246, 0.08);
}

.gan-callout strong {
    color: var(--text);
}

.gan-callout.warning {
    border-left-color: var(--gan-gold);
    background: rgba(245, 158, 11, 0.09);
}

.gan-callout.science {
    border-left-color: var(--gan-violet);
    background: rgba(139, 92, 246, 0.08);
}

.gan-grid-2,
.gan-grid-3,
.gan-grid-4 {
    display: grid;
    gap: 1.25rem;
    margin: 1.5rem 0;
}

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

.gan-grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.gan-grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.gan-card {
    padding: 1.4rem;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 20px 55px -50px rgba(15, 23, 42, 0.52);
}

.gan-card h3,
.gan-card h4 {
    margin-top: 0;
}

.gan-card p {
    font-size: 0.92rem;
}

.gan-card .mini-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--accent);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.gan-definition-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.9rem;
    margin: 1.5rem 0;
}

.gan-definition {
    padding: 1.1rem;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.78);
}

.gan-definition dt {
    margin-bottom: 0.35rem;
    color: var(--text);
    font-weight: 700;
}

.gan-definition dd {
    color: var(--muted);
    font-size: 0.86rem;
    line-height: 1.55;
}

.gan-mermaid-wrap {
    margin: 2rem 0;
    padding: 0;
    overflow: hidden;
    border: 1px solid rgba(37, 99, 235, 0.14);
    border-radius: 20px;
    background:
        linear-gradient(rgba(37, 99, 235, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 235, 0.035) 1px, transparent 1px),
        #ffffff;
    background-size: 26px 26px;
    box-shadow: 0 28px 70px -58px rgba(15, 23, 42, 0.72);
}

.gan-diagram-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.65rem 0.8rem 0.65rem 1rem;
    border-bottom: 1px solid rgba(37, 99, 235, 0.12);
    background: rgba(248, 250, 252, 0.94);
}

.gan-diagram-toolbar-title {
    color: var(--muted);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.gan-diagram-controls {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.gan-diagram-control {
    min-width: 2.25rem;
    height: 2.25rem;
    padding: 0 0.55rem;
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 9px;
    color: var(--accent-dark);
    background: #fff;
    font: inherit;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1;
    cursor: pointer;
    transition: background 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.gan-diagram-control:hover,
.gan-diagram-control:focus-visible {
    border-color: rgba(37, 99, 235, 0.48);
    background: var(--accent-soft);
}

.gan-diagram-control:active {
    transform: translateY(1px);
}

.gan-diagram-control:disabled {
    opacity: 0.38;
    cursor: not-allowed;
}

.gan-diagram-reset {
    min-width: 3.8rem;
    font-size: 0.76rem;
}

.gan-diagram-scroll {
    width: 100%;
    padding: 1.25rem;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-inline: contain;
}

.gan-mermaid-wrap .mermaid {
    display: grid;
    min-width: 720px;
    margin: 0;
    place-items: center;
    color: var(--text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    white-space: pre;
}

.gan-mermaid-large .mermaid {
    min-width: 900px;
}

.gan-mermaid-compact .mermaid {
    min-width: 980px;
}

.gan-mermaid-wrap svg {
    display: block;
    max-width: none !important;
    height: auto;
    margin: 0 auto;
}

.gan-mermaid-wrap .nodeLabel,
.gan-mermaid-wrap .edgeLabel,
.gan-mermaid-wrap .cluster-label {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;
}

.gan-mermaid-wrap .edgeLabel {
    padding: 0.15rem 0.35rem;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.94) !important;
}

.gan-mermaid-wrap .cluster rect {
    rx: 14px;
    ry: 14px;
}

.gan-flow {
    display: grid;
    gap: 0;
    margin: 2rem 0;
}

.gan-flow-node {
    position: relative;
    padding: 1.1rem 1.3rem;
    border: 1px solid rgba(59, 130, 246, 0.22);
    border-radius: 14px;
    background: linear-gradient(145deg, #fff, #f3f7ff);
    box-shadow: 0 16px 44px -42px rgba(15, 23, 42, 0.65);
    text-align: center;
}

.gan-flow-node strong {
    display: block;
    color: var(--text);
}

.gan-flow-node small {
    display: block;
    margin-top: 0.28rem;
    color: var(--muted);
}

.gan-flow-node.input {
    border-color: rgba(6, 182, 212, 0.35);
    background: linear-gradient(145deg, #ecfeff, #f0fdfa);
}

.gan-flow-node.output {
    border-color: rgba(139, 92, 246, 0.32);
    background: linear-gradient(145deg, #f5f3ff, #faf5ff);
}

.gan-flow-node.loss {
    border-color: rgba(239, 68, 68, 0.25);
    background: linear-gradient(145deg, #fff1f2, #fff7ed);
}

.gan-flow-arrow {
    display: grid;
    place-items: center;
    height: 38px;
    color: var(--accent);
    font-size: 1.25rem;
    font-weight: 700;
}

.gan-flow-arrow::before {
    content: '↓';
}

.gan-flow-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    align-items: stretch;
    margin: 1.5rem 0;
}

.gan-flow-row .gan-flow-node {
    display: grid;
    align-content: center;
}

.gan-flow-note {
    margin-top: 0.45rem;
    color: var(--muted);
    font-size: 0.8rem;
    text-align: center;
}

.gan-network {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 88px minmax(0, 1fr);
    gap: 0.75rem;
    margin: 2rem 0;
    align-items: stretch;
}

.gan-network-column {
    display: grid;
    gap: 0.75rem;
}

.gan-network-stage {
    padding: 1rem;
    border-radius: 14px;
    border: 1px solid rgba(59, 130, 246, 0.2);
    background: #fff;
}

.gan-network-stage strong,
.gan-network-stage span {
    display: block;
}

.gan-network-stage strong {
    color: var(--text);
    font-size: 0.92rem;
}

.gan-network-stage span {
    margin-top: 0.25rem;
    color: var(--muted);
    font-size: 0.76rem;
}

.gan-network-stage.encoder {
    border-left: 4px solid var(--gan-cyan);
}

.gan-network-stage.decoder {
    border-left: 4px solid var(--gan-violet);
}

.gan-skip-column {
    display: grid;
    grid-template-rows: repeat(5, 1fr);
    gap: 0.75rem;
}

.gan-skip {
    display: grid;
    place-items: center;
    color: var(--accent);
    font-size: 0.69rem;
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
}

.gan-skip::before {
    content: '→';
    display: block;
    font-size: 1.4rem;
}

.gan-equation {
    margin: 1.4rem 0;
    padding: 1.2rem;
    overflow-x: auto;
    border: 1px solid rgba(139, 92, 246, 0.18);
    border-radius: 14px;
    background: #f8f7ff;
    color: #1f2937;
    text-align: center;
}

.gan-table-wrap {
    margin: 1.5rem 0;
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: #fff;
}

.gan-table {
    width: 100%;
    min-width: 680px;
    border-collapse: collapse;
    font-size: 0.86rem;
}

.gan-table th,
.gan-table td {
    padding: 0.9rem 1rem;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.gan-table th {
    color: var(--text);
    background: #f8fafc;
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.gan-table td {
    color: #4b5563;
}

.gan-table tr:last-child td {
    border-bottom: 0;
}

.gan-table code,
.gan-code,
.gan-section code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.gan-code {
    margin: 1.4rem 0;
    padding: 1.2rem;
    overflow-x: auto;
    border-radius: 14px;
    background: #07111f;
    color: #dbeafe;
    font-size: 0.82rem;
    line-height: 1.7;
    white-space: pre;
}

.gan-numbered {
    display: grid;
    gap: 0.85rem;
    margin: 1.3rem 0;
    padding: 0;
    list-style: none;
    counter-reset: gan-step;
}

.gan-numbered li {
    position: relative;
    min-height: 46px;
    padding: 0.75rem 0.75rem 0.75rem 3.5rem;
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    counter-increment: gan-step;
}

.gan-numbered li::before {
    content: counter(gan-step, decimal-leading-zero);
    position: absolute;
    top: 0.65rem;
    left: 0;
    display: grid;
    width: 2.5rem;
    height: 2.5rem;
    place-items: center;
    border-radius: 999px;
    background: #e8efff;
    color: var(--accent-dark);
    font-size: 0.74rem;
    font-weight: 700;
}

.gan-figure {
    margin: 2rem 0;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 30px 70px -58px rgba(15, 23, 42, 0.72);
}

.gan-figure a {
    display: block;
    background: #eef2f7;
}

.gan-figure img {
    width: 100%;
}

.gan-figure figcaption {
    padding: 1rem 1.2rem 1.15rem;
    color: var(--muted);
    font-size: 0.84rem;
}

.gan-figure figcaption strong {
    color: var(--text);
}

.gan-results-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
}

.gan-results-grid .gan-figure {
    margin: 0;
}

.gan-results-grid .wide {
    grid-column: 1 / -1;
}

.gan-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    margin: 1rem 0;
}

.gan-chip {
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    background: #e8efff;
    color: #1e40af;
    font-size: 0.75rem;
    font-weight: 650;
}

.gan-file-tree {
    margin: 1.4rem 0;
    padding: 1.2rem;
    overflow-x: auto;
    border-radius: 14px;
    background: #07111f;
    color: #cbd5e1;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.8rem;
    line-height: 1.75;
    white-space: pre;
}

.gan-summary-banner {
    padding: 2rem;
    border-radius: 22px;
    background:
        radial-gradient(circle at top right, rgba(6, 182, 212, 0.17), transparent 38%),
        linear-gradient(145deg, #0b1d33, #101c32);
    color: #f8fbff;
}

.gan-summary-banner h3 {
    margin-top: 0;
    color: #fff;
}

.gan-summary-banner p,
.gan-summary-banner li {
    color: rgba(248, 251, 255, 0.75);
}

.gan-check-list {
    display: grid;
    gap: 0.55rem;
    margin: 1rem 0 0;
    padding: 0;
    list-style: none;
}

.gan-check-list li::before {
    content: '✓';
    margin-right: 0.65rem;
    color: #67e8f9;
    font-weight: 700;
}

.gan-page-footer {
    padding: 2.5rem 0;
    color: rgba(248, 251, 255, 0.68);
    background: #07111f;
    text-align: center;
}

.gan-page-footer a {
    color: #bae6fd;
}

@media (max-width: 1100px) {
    .gan-metric-strip {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .gan-layout {
        grid-template-columns: 1fr;
    }

    .gan-toc {
        position: relative;
        top: 0;
    }

    .gan-toc ol {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 820px) {
    .gan-project-hero {
        padding: 5rem 0 3.5rem;
    }

    .gan-metric-strip,
    .gan-grid-3,
    .gan-grid-4,
    .gan-definition-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .gan-grid-2,
    .gan-results-grid {
        grid-template-columns: 1fr;
    }

    .gan-results-grid .wide {
        grid-column: auto;
    }

    .gan-flow-row {
        grid-template-columns: 1fr;
    }

    .gan-network {
        grid-template-columns: 1fr;
    }

    .gan-skip-column {
        display: none;
    }

    .gan-toc ol {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .gan-project-hero h1 {
        font-size: 2.45rem;
    }

    .gan-metric-strip,
    .gan-grid-3,
    .gan-grid-4,
    .gan-definition-grid,
    .gan-toc ol {
        grid-template-columns: 1fr;
    }

    .gan-metric {
        min-height: auto;
    }

    .gan-content {
        width: min(94vw, 1240px);
        padding-top: 2.5rem;
    }

    .gan-section,
    .gan-section + .gan-section {
        padding-top: 2.8rem;
        padding-bottom: 2.8rem;
    }

    .gan-hero-actions .btn {
        width: 100%;
    }

    .gan-mermaid-wrap {
        margin-inline: -1vw;
        border-radius: 14px;
    }

    .gan-diagram-toolbar {
        padding: 0.55rem 0.6rem 0.55rem 0.75rem;
    }

    .gan-diagram-scroll {
        padding: 0.85rem;
    }
}

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