/* Base Reset */
* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
}

/* Variables */
:root {
        --primary-color: #000000;
        --text-primary: #000000;
        --text-secondary: #666666;
        --bg-primary: #ffffff;
        --bg-secondary: #ffffff;
        --bg-code: #1e1e1e;
        --border-color: #000000;
        --border-light: #cccccc;
        --link-color: #0056d6;
        --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
        --font-mono: 'SF Mono', 'Consolas', 'Monaco', 'Courier New', monospace;
}

/* Base Styles */
body {
        font-family: var(--font-sans);
        color: var(--text-primary);
        background: var(--bg-primary);
        line-height: 1.5;
        font-size: 15px;
}

/* Container */
.container {
        max-width: 820px;
        margin: 0 auto;
        padding: 0 1.5rem;
}

/* Main Content */
.main-content {
        padding: 1rem 0;
}

/* Hero Section - compact */
.hero-section {
        padding: 1.5rem 0 1rem;
        margin-bottom: 0.5rem;
        text-align: center;
}

.hero-title {
        font-size: 1.5rem;
        font-weight: 700;
        margin-bottom: 0.25rem;
        color: var(--text-primary);
}

.hero-subtitle {
        font-size: 0.9rem;
        color: var(--text-secondary);
        margin-bottom: 0.25rem;
}

/* Language Switch */
.language-switch {
        margin-top: 0.4rem;
        font-size: 0.85rem;
        color: var(--text-secondary);
}
.language-switch a {
        color: var(--text-primary);
        text-decoration: none;
}
.language-switch a:hover {
        text-decoration: underline;
}

/* Sections */
.section {
        margin-bottom: 1rem;
        padding: 0;
        background: transparent;
}

.research-section {
        background: transparent;
        margin-left: 0;
        margin-right: 0;
        padding-left: 0;
        padding-right: 0;
}

/* Research Feed - compact list */
.research-feed {
        max-width: 100%;
        margin: 0 auto;
        background: transparent;
}

.research-row {
        display: flex !important;
        align-items: baseline;
        gap: 1rem;
        padding: 0.6rem 0;
        border-bottom: 1px solid #eee;
}

.research-date {
        flex: 0 0 90px;
        max-width: 90px;
        color: var(--text-secondary);
        font-size: 0.8rem;
        line-height: 1.4;
        padding-top: 0.1rem;
}

.research-content {
        flex: 1 1 auto;
        min-width: 0;
}

.entry-title {
        font-size: 1rem;
        font-weight: 600;
        line-height: 1.4;
        margin-bottom: 0.1rem;
}

.entry-title a {
        color: var(--link-color);
        text-decoration: none;
}

.entry-title a:hover {
        text-decoration: underline;
}

.entry-desc {
        color: var(--text-secondary);
        font-size: 0.85rem;
        line-height: 1.4;
        margin-bottom: 0;
}

.entry-links {
        line-height: 1.5;
}
.entry-links a {
        color: var(--link-color);
        text-decoration: none;
}
.entry-links a:hover {
        text-decoration: underline;
}

/* Footer - compact */
.site-footer {
        padding: 1.5rem 0;
        margin-top: 1rem;
        color: var(--text-secondary);
        font-size: 0.8rem;
        text-align: center;
        border-top: 1px solid #eee;
}

/* ===== Styles below kept for article/blog sub-pages ===== */

/* Header */
.site-header {
        background: var(--bg-primary);
        position: sticky;
        top: 0;
        z-index: 100;
}
.header-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1rem 0;
}
.site-title {
        font-size: 1.25rem;
        font-weight: 600;
        color: var(--text-primary);
}
.main-nav {
        display: flex;
        gap: 2rem;
}
.main-nav a {
        color: var(--text-primary);
        text-decoration: none;
        font-size: 0.95rem;
        transition: opacity 0.2s;
}
.main-nav a:hover {
        opacity: 0.6;
}

/* Section headings for article pages */
.section h2 {
        font-size: 1.75rem;
        font-weight: 600;
        margin-bottom: 1.5rem;
        color: var(--text-primary);
        padding-bottom: 0.75rem;
        border-bottom: 2px solid #e9ecef;
        position: relative;
}
.section h2::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 60px;
        height: 2px;
        background: #007bff;
}
.section h3 {
        font-size: 1.25rem;
        font-weight: 600;
        margin-top: 1.5rem;
        margin-bottom: 0.75rem;
        color: var(--text-primary);
}
.section h4 {
        font-size: 1.1rem;
        font-weight: 600;
        margin-top: 1rem;
        margin-bottom: 0.5rem;
        color: var(--text-primary);
}
.section p {
        margin-bottom: 1rem;
        line-height: 1.7;
}
.section-intro {
        font-size: 1rem;
        color: var(--text-secondary);
        margin-bottom: 1.5rem;
        line-height: 1.6;
}

/* Core Features Grid */
.core-features-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
        margin: 2rem 0;
}
.core-feature-column {
        background: #f8f9fa;
        padding: 2rem 1.5rem;
        text-align: center;
        border-radius: 8px;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.core-feature-column:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}
.core-feature-column h3 {
        color: var(--text-primary);
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
        font-weight: 700;
}
.core-feature-column p {
        color: var(--text-secondary);
        line-height: 1.6;
}

.core-features-details { margin-top: 3rem; }
.core-feature-detail {
        background: var(--bg-primary);
        padding: 2rem;
        margin-bottom: 3rem;
        border-radius: 12px;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
        border: 1px solid #e0e0e0;
}
.core-feature-detail h3 {
        color: var(--text-primary);
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
        font-weight: 700;
}

/* Tech Highlights Grid */
.tech-highlights-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
        margin: 2rem 0;
}
.tech-highlight-column {
        background: #f0f8ff;
        padding: 2rem 1.5rem;
        text-align: center;
        border-radius: 8px;
        box-shadow: 0 2px 8px rgba(0, 123, 255, 0.08);
        transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.tech-highlight-column:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 16px rgba(0, 123, 255, 0.12);
}
.tech-highlight-column h3 {
        color: var(--text-primary);
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
        font-weight: 700;
}
.tech-highlight-column p {
        color: var(--text-secondary);
        line-height: 1.6;
}
.tech-highlights-details { margin-top: 3rem; }
.tech-highlight-detail {
        background: var(--bg-primary);
        padding: 2rem;
        margin-bottom: 3rem;
        border-radius: 12px;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
.tech-highlight-detail h3 {
        color: var(--text-primary);
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
        font-weight: 700;
}

/* Lists */
ul, ol { margin-bottom: 1rem; padding-left: 1.5rem; }
li { margin-bottom: 0.25rem; }

/* Metrics Grid */
.metrics-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1rem;
        margin: 1.5rem 0;
}
.metric-card {
        background: #f8f9fa;
        padding: 1.5rem;
        border-radius: 8px;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
        text-align: center;
}
.metric-value {
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 0.25rem;
}
.metric-label {
        font-size: 0.875rem;
        color: var(--text-secondary);
}

/* Architecture */
.architecture-overview { margin: 1.5rem 0; text-align: center; }
.architecture-image { max-width: 100%; height: auto; background: white; padding: 1rem; }
.architecture-details { margin: 1.5rem 0; }

/* Feature Grid */
.feature-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 1rem;
        margin: 1rem 0;
}
.feature-card {
        background: #fafafa;
        padding: 1.5rem;
        border-radius: 8px;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}
.feature-card h4 { color: var(--text-primary); margin-bottom: 0.5rem; }

/* Tables */
.table-wrapper { overflow-x: auto; margin: 1.5rem 0; }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.benchmark-table, .api-table {
        background: var(--bg-primary);
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
th { background: #f8f9fa; text-align: left; padding: 1rem; font-weight: 600; border: 1px solid #e0e0e0; }
td { padding: 1rem; border: 1px solid #e0e0e0; }
tr:hover { background: #f8f9fa; }
td strong { color: var(--text-primary); font-weight: 600; }

/* Code Blocks */
pre, pre[class*="language-"] { background: var(--bg-code) !important; padding: 1rem; overflow-x: auto; margin: 1rem 0; }
code { font-family: var(--font-mono); font-size: 0.875rem; background: #f5f5f5; color: var(--text-primary); padding: 0.125rem 0.25rem; }
pre code, pre[class*="language-"] code { background: transparent !important; color: #d4d4d4 !important; padding: 0; line-height: 1.5; }

/* Tabs */
.capability-tabs, .code-tabs { display: flex; gap: 0; border-bottom: 1px solid #e0e0e0; margin-bottom: 1.5rem; overflow-x: auto; }
.capability-tab, .code-tab { padding: 0.5rem 1rem; background: none; border: 1px solid #e0e0e0; border-bottom: none; color: var(--text-secondary); font-size: 0.9rem; cursor: pointer; transition: all 0.2s ease; white-space: nowrap; }
.capability-tab:hover, .code-tab:hover { color: var(--text-primary); }
.capability-tab.active, .code-tab.active { color: var(--text-primary); background: var(--bg-primary); font-weight: 600; border-top: 2px solid #e0e0e0; }
.capability-panel, .code-panel { display: none; }
.capability-panel.active, .code-panel.active { display: block; }

/* Carousel */
.carousel-container { position: relative; overflow: hidden; padding: 0 40px; }
.carousel-wrapper { overflow: hidden; }
.carousel-track { display: flex; gap: 1rem; transition: transform 0.3s ease; }
.carousel-btn { position: absolute; top: 50%; transform: translateY(-50%); background: var(--bg-primary); border: 1px solid #e0e0e0; width: 32px; height: 32px; font-size: 1.2rem; color: var(--text-primary); cursor: pointer; transition: all 0.2s ease; z-index: 10; display: flex; align-items: center; justify-content: center; }
.carousel-btn:hover:not(:disabled) { background: #f5f5f5; }
.carousel-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.carousel-prev { left: 0; }
.carousel-next { right: 0; }

/* Capability Cards */
.capability-card { flex: 0 0 500px; background: var(--bg-primary); border: 1px solid #e0e0e0; overflow: hidden; min-height: 500px; }
.capability-card h4 { background: var(--bg-primary); color: var(--text-primary); padding: 0.75rem; font-size: 1rem; font-weight: 600; margin: 0; border-bottom: 1px solid #e0e0e0; }
.showcase-content { padding: 1rem; }
.showcase-image { background: white; border: 1px solid #e0e0e0; padding: 0.5rem; margin-bottom: 1rem; min-height: 200px; display: flex; align-items: center; justify-content: center; }
.showcase-image img { max-width: 100%; max-height: 280px; object-fit: contain; cursor: pointer; transition: transform 0.2s ease; }
.showcase-image img:hover { transform: scale(1.02); }
.showcase-image video { max-width: 100%; max-height: 280px; object-fit: contain; cursor: pointer; transition: transform 0.2s ease; }
.showcase-image video:hover { transform: scale(1.02); }

/* Modal */
.image-modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.8); }
.image-modal-content { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); max-width: 90%; max-height: 90%; }
.image-modal-content img { max-width: 100%; max-height: 100%; object-fit: contain; }
.image-modal-close { position: absolute; top: 15px; right: 25px; color: white; font-size: 35px; font-weight: bold; cursor: pointer; }
.image-modal-close:hover { color: #ccc; }

.showcase-dialogue { background: var(--bg-primary); border: 1px solid #e0e0e0; padding: 1rem; }
.user-prompt { margin: 0.5rem 0; padding: 0.75rem; background: #ffe6e6; border: 1px solid #ffb3b3; border-radius: 6px; }
.model-response { margin: 0.5rem 0; padding: 0.75rem; background: #e6f3ff; border: 1px solid #b3d9ff; border-radius: 6px; }
.user-prompt strong, .model-response strong { color: var(--text-primary); display: block; margin-bottom: 0.25rem; }
.model-response pre { background: var(--bg-code); padding: 0.5rem; margin: 0.5rem 0; font-size: 0.75rem; overflow-x: auto; color: #d4d4d4; border: 1px solid #e0e0e0; }

/* Comparison Metrics */
.metrics-comparison { display: flex; justify-content: space-between; gap: 1rem; margin: 1.5rem 0; flex-wrap: wrap; }
.metric-highlight { flex: 1; min-width: 150px; text-align: center; padding: 1.5rem; background: #f0f8ff; border-radius: 8px; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05); }
.metric-highlight .metric-value { font-size: 1.5rem; font-weight: 700; color: var(--text-primary); margin-bottom: 0.25rem; }
.metric-highlight .metric-label { font-size: 0.875rem; color: var(--text-secondary); }
.detail { font-size: 0.75rem; color: var(--text-secondary); }

/* Summary List */
.summary-list { list-style: none; padding: 0; }
.summary-list li { padding: 0.5rem 0; border-bottom: 1px solid var(--border-light); }
.summary-list li:last-child { border-bottom: none; }

/* CTA */
.cta-section { background: var(--bg-primary); padding: 2rem; text-align: center; margin: 2rem 0; }
.cta-section h3 { margin-top: 0; margin-bottom: 0.5rem; }
.cta-section p { color: var(--text-secondary); margin-bottom: 1rem; }

/* Buttons */
.btn { display: inline-block; padding: 0.5rem 1rem; text-decoration: none; font-weight: 500; transition: all 0.2s; margin: 0 0.25rem; border: 1px solid #e0e0e0; }
.btn-primary { background: var(--text-primary); color: white; }
.btn-primary:hover { background: #333333; }
.btn-secondary { background: white; color: var(--text-primary); }
.btn-secondary:hover { background: #f5f5f5; }

/* Resources Grid */
.resources-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.resource-card { background: #f8f9fa; padding: 1.5rem; border-radius: 8px; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05); }
.resource-card h3 { margin-top: 0; font-size: 1.1rem; }
.resource-card ul { list-style: none; padding: 0; }
.resource-card li { padding: 0.25rem 0; }
.resource-card a { color: var(--text-primary); text-decoration: underline; }
.resource-card a:hover { text-decoration: none; }

/* Index Table */
.index-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid #e5e7eb; }
.index-table th, .index-table td { text-align: left; padding: 1rem; border-bottom: 1px solid #e5e7eb; vertical-align: top; }
.index-table th { font-weight: 700; background: #f8f9fa; }
.index-table a { color: var(--link-color); text-decoration: none; }
.index-table a:hover { text-decoration: underline; }

/* Article styles */
.article { background: #fff; border: 1px solid #e5e7eb; border-radius: 12px; padding: 2rem; }
.article h1 { font-size: 2rem; margin-bottom: 1rem; }
.article h2 { font-size: 1.6rem; margin-top: 2rem; margin-bottom: 1rem; }
.article h3 { font-size: 1.3rem; margin-top: 1.5rem; margin-bottom: .75rem; }
.article h4 { font-size: 1.1rem; margin-top: 1.25rem; margin-bottom: .5rem; }
.article p, .article li { line-height: 1.8; }
.article ul, .article ol { padding-left: 1.5rem; margin-bottom: 1rem; }
.article blockquote { border-left: 4px solid var(--link-color); padding: .75rem 1rem; background: #f8f9fa; color: #444; margin: 1rem 0; }
.article pre { background: #1e1e1e; color: #d4d4d4; padding: 1rem; overflow-x: auto; border-radius: 8px; margin: 1rem 0; }
.article code { font-family: var(--font-mono); }
.article :not(pre) > code { background: #f2f4f7; padding: .1rem .35rem; border-radius: 4px; }
.article table { width: 100%; border-collapse: collapse; margin: 1rem 0; }
.article th, .article td { border: 1px solid #d9d9d9; padding: .65rem .8rem; }
.article table.experiment-table { table-layout: fixed; }
.article table.experiment-table th:nth-child(1), .article table.experiment-table td:nth-child(1) { width: 38%; }
.article table.experiment-table th:nth-child(2), .article table.experiment-table td:nth-child(2), .article table.experiment-table th:nth-child(3), .article table.experiment-table td:nth-child(3) { width: 31%; }
.zoomable-image { display: inline-block; cursor: zoom-in; }
.zoomable-image img { width: 100%; max-width: 100%; height: auto; display: block; }
.article img { max-width: 100%; height: auto; cursor: zoom-in; }
.article .hero-note { color: var(--text-secondary); margin-bottom: 1.5rem; }
.article .back-link { margin-bottom: 1.5rem; display: inline-block; color: var(--link-color); text-decoration: none; }
.article .back-link:hover { text-decoration: underline; }

/* Utility */
html { scroll-behavior: smooth; }
.positive { color: #000000; font-weight: 600; }
.neutral { color: #666666; }
.table-of-contents.section > div > h2 { padding-bottom: 0.75rem; border-bottom: 2px solid #e9ecef; position: relative; }
.table-of-contents.section > div > h2::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 60px; height: 2px; background: #007bff; }
.capability-showcase { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; margin: 1.5rem 0; }
.capability-item { background: #fafafa; padding: 1.5rem; border-radius: 8px; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05); }
.capability-item h4 { font-size: 1.1rem; margin-bottom: 0.5rem; padding-bottom: 0.5rem; }

/* Footer content layout */
.footer-content { display: flex; justify-content: space-between; align-items: center; }
.footer-info p { margin: 0.25rem 0; color: var(--text-secondary); font-size: 0.875rem; }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.875rem; }
.footer-links a:hover { color: var(--text-primary); }

/* Responsive */
@media (max-width: 768px) {
        .container { padding: 0 1rem; }
        .main-content { padding: 0.5rem 0; }
        .hero-title { font-size: 1.25rem; }
        .hero-subtitle { font-size: 0.85rem; }
        .section { margin-bottom: 1rem; padding: 0.5rem 0; margin-left: -1rem; margin-right: -1rem; padding-left: 1rem; padding-right: 1rem; }
        .section h2 { font-size: 1.5rem; }
        .section h3 { font-size: 1.1rem; }
        .section h4 { font-size: 1rem; }
        .core-features-grid, .tech-highlights-grid { grid-template-columns: 1fr; gap: 1rem; }
        .feature-grid { grid-template-columns: 1fr; gap: 1rem; }
        .metrics-grid { grid-template-columns: 1fr; gap: 1rem; }
        .metrics-comparison { flex-direction: column; gap: 1rem; }
        div[style*="grid-template-columns: repeat(3, 1fr)"] { display: grid !important; grid-template-columns: 1fr !important; gap: 1rem !important; }
        div[style*="grid-template-columns: repeat(2, 1fr)"] { display: grid !important; grid-template-columns: 1fr !important; gap: 1rem !important; }
        .table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 1rem -1rem; padding: 0 1rem; }
        table { min-width: 650px; font-size: 0.8rem; }
        th, td { padding: 0.5rem 0.25rem; font-size: 0.75rem; white-space: nowrap; }
        th { font-size: 0.8rem; font-weight: 600; }
        .benchmark-table th:first-child, .benchmark-table td:first-child { position: sticky; left: 0; background: var(--bg-primary); z-index: 10; border-right: 2px solid #e0e0e0; }
        .benchmark-table th:first-child { background: #f8f9fa; }
        .carousel-container { padding: 0 20px; }
        .capability-card { flex: 0 0 calc(100vw - 60px); min-height: auto; }
        .carousel-btn { width: 24px; height: 24px; font-size: 1rem; }
        .carousel-prev { left: -5px; }
        .carousel-next { right: -5px; }
        .showcase-image { min-height: 120px; }
        .showcase-image img { max-height: 180px; }
        pre, pre[class*="language-"] { font-size: 0.75rem; padding: 0.75rem; overflow-x: auto; -webkit-overflow-scrolling: touch; }
        .capability-tabs, .code-tabs { flex-wrap: wrap; gap: 0.25rem; }
        .capability-tab, .code-tab { padding: 0.5rem 0.75rem; font-size: 0.85rem; flex: 1 1 auto; text-align: center; min-width: 80px; }
        .architecture-image { max-width: 100%; height: auto; padding: 0.5rem; }
        .table-of-contents div[style*="grid-template-columns: repeat(2, 1fr)"] { display: block !important; }
        .table-of-contents div > div { margin-bottom: 1.5rem; }
        div[style*="grid-template-columns: repeat(3, 1fr)"][style*="margin-top: 1rem"] { display: block !important; }
        div[style*="grid-template-columns: repeat(3, 1fr)"][style*="margin-top: 1rem"] > div { margin-bottom: 1.5rem; }
        .image-modal-content { max-width: 95%; max-height: 85%; }
        .image-modal-close { top: 10px; right: 15px; font-size: 28px; }
        .research-row { display: block !important; padding: 0.5rem 0; }
        .research-date { max-width: none; margin-bottom: 0.15rem; }
        .research-feed { max-width: none; }
        .article { padding: 1.25rem; }
}

@media (max-width: 480px) {
        .container { padding: 0 0.75rem; }
        .hero-title { font-size: 1.1rem; }
        .hero-subtitle { font-size: 0.8rem; }
        .capability-card { flex: 0 0 calc(100vw - 40px); }
        .carousel-container { padding: 0 15px; }
        .metric-highlight .metric-value { font-size: 1.25rem; }
        .metric-highlight .metric-label { font-size: 0.8rem; }
}