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

:root {
    --primary: #0066FF;
    --dark: #0a0a0a;
    --gray: #666;
    --light: #fafafa;
    --border: #e5e5e5;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: #fff;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--dark);
}

.logo-text {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.5px;
}

.logo-by {
    font-size: 0.75rem;
    color: var(--gray);
}

.logo-icon svg {
    width: 44px;
    height: 44px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--dark);
}

.nav-links a.nav-tab.active:not(.btn) {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
    padding-bottom: 4px;
}

/* Tab-based section visibility */
.content-section {
    display: none !important;
}

.content-section.active {
    display: block !important;
}

/* Hero uses flex when active */
.hero.content-section.active {
    display: flex !important;
}

/* Blog section needs padding like other sections */
#blog.content-section.active {
    display: block !important;
    padding: 100px 0;
}

button.btn {
    font-family: inherit;
    background: none;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: #0052cc;
}

.btn-secondary {
    background: transparent;
    color: var(--dark);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--dark);
}

.mobile-menu-btn {
    display: none;
}

/* Hero - Dark Theme */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #050508 0%, #0a0d1a 40%, #0d0a18 70%, #050508 100%);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 720px;
    position: relative;
    z-index: 1;
}

.hero-headline {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: 24px;
    color: #fff;
}

.hero-line-1,
.hero-line-2 {
    display: block;
}

.highlight-gradient {
    background: linear-gradient(135deg, #0088ff, #00d4ff, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle-bold {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.9);
    margin-bottom: 40px;
    max-width: 560px;
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-bottom: 40px;
}

.stat {
    text-align: left;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1;
}

.stat-unit {
    font-size: 1.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    background: var(--border);
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.btn-large {
    padding: 14px 28px;
    font-size: 1rem;
}

/* Bracket Style Buttons */
.bracket-btn {
    position: relative;
    padding: 16px 32px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.bracket-btn-text {
    position: relative;
    z-index: 1;
}

.bracket-corner {
    position: absolute;
    width: 12px;
    height: 12px;
    transition: all 0.3s ease;
}

.bracket-corner::before,
.bracket-corner::after {
    content: '';
    position: absolute;
    background: currentColor;
}

.bracket-corner.tl { top: 0; left: 0; }
.bracket-corner.tr { top: 0; right: 0; }
.bracket-corner.bl { bottom: 0; left: 0; }
.bracket-corner.br { bottom: 0; right: 0; }

.bracket-corner.tl::before { top: 0; left: 0; width: 12px; height: 2px; }
.bracket-corner.tl::after { top: 0; left: 0; width: 2px; height: 12px; }

.bracket-corner.tr::before { top: 0; right: 0; width: 12px; height: 2px; }
.bracket-corner.tr::after { top: 0; right: 0; width: 2px; height: 12px; }

.bracket-corner.bl::before { bottom: 0; left: 0; width: 12px; height: 2px; }
.bracket-corner.bl::after { bottom: 0; left: 0; width: 2px; height: 12px; }

.bracket-corner.br::before { bottom: 0; right: 0; width: 12px; height: 2px; }
.bracket-corner.br::after { bottom: 0; right: 0; width: 2px; height: 12px; }

/* Outline variant */
.bracket-btn-outline {
    color: rgba(255, 255, 255, 0.9);
}

.bracket-btn-outline:hover {
    color: #fff;
}

.bracket-btn-outline:hover .bracket-corner {
    width: 16px;
    height: 16px;
}

/* Filled variant */
.bracket-btn-filled {
    color: #6366f1;
    background: rgba(99, 102, 241, 0.15);
}

.bracket-btn-filled:hover {
    background: rgba(99, 102, 241, 0.25);
}

.bracket-btn-filled:hover .bracket-corner {
    width: 16px;
    height: 16px;
}

.scroll-indicator {
    display: none;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-bg canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 1;
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-dark {
    background: #f8fafc;
    color: var(--dark);
}

.section-dark .section-header h2 {
    color: var(--dark);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary), #00c6ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Why Grid */
.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.why-card {
    padding: 32px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: box-shadow 0.2s;
}

.why-card:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
}

.why-number {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 16px;
}

.why-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.why-card p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* Products */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    padding: 32px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: all 0.2s;
}

.product-card:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(0,102,255,0.1);
}

.product-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
}

.product-icon-wrap {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: 10px;
    color: #fff;
}

.product-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.product-tagline {
    font-size: 0.875rem;
    color: var(--gray);
}

.product-features {
    list-style: none;
    font-size: 0.9rem;
    color: var(--gray);
}

.product-features li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.product-features li:last-child {
    border-bottom: none;
}

.product-features strong {
    color: var(--dark);
}

.product-card.featured {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(0,102,255,0.2), rgba(0,198,255,0.1));
    border-color: rgba(0,102,255,0.3);
}

/* Team Section */
#team {
    background: #fff;
}

#team .section-header h2 {
    color: var(--dark);
}

.team-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.founder-card {
    display: flex;
    gap: 24px;
    padding: 32px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
}

.founder-avatar {
    width: 80px;
    height: 80px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.founder-info h3 {
    font-size: 1.25rem;
    margin-bottom: 4px;
    color: var(--dark);
}

.founder-title {
    color: var(--primary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.founder-credentials {
    list-style: none;
    font-size: 0.875rem;
    color: var(--gray);
}

.founder-credentials li {
    padding: 4px 0;
}

.team-coming {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px;
    background: var(--light);
    border: 1px dashed var(--border);
    border-radius: 12px;
    text-align: center;
}

.coming-icon {
    color: var(--gray);
    margin-bottom: 16px;
}

.coming-text {
    font-size: 1.125rem;
    color: var(--dark);
}

.coming-subtext {
    font-size: 0.875rem;
    color: var(--gray);
}

.vision-quote {
    max-width: 700px;
    margin: 60px auto 0;
    text-align: center;
}

.vision-quote blockquote {
    font-size: 1.25rem;
    font-style: italic;
    color: var(--gray);
}

/* Contact */
.contact-section {
    text-align: center;
}

.contact-grid {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--gray);
}

.contact-item a {
    color: var(--primary);
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright {
    color: var(--gray);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--gray);
    font-size: 0.875rem;
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--dark);
}

/* Solution Section */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 60px;
}

.solution-card {
    padding: 32px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
}

.solution-number {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 16px;
}

.solution-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.solution-card p {
    color: var(--gray);
    font-size: 0.95rem;
}

.tech-highlights {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.tech-highlights h3 {
    font-size: 1.5rem;
    margin-bottom: 32px;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 24px;
}

.tech-item {
    text-align: center;
}

.tech-item strong {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.tech-item span {
    font-size: 0.8rem;
    color: var(--gray);
}

@media (max-width: 768px) {
    .solution-grid {
        grid-template-columns: 1fr;
    }
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Hide heavy elements */
.section-tag,
.innovation-showcase,
.math-foundations,
.industries-grid,
.section-blog,
.knowledge-loss-visual,
.problem-stats,
.problem-highlight,
.problems-grid {
    display: none;
}

/* Section subtitle - clean */
.section-subtitle {
    color: var(--gray);
    font-size: 1.1rem;
    margin-top: 12px;
}

.section-dark .section-subtitle {
    color: rgba(255,255,255,0.7);
}

/* Architecture */
#architecture {
    background: var(--dark);
    color: #fff;
}

.architecture-diagram {
    max-width: 900px;
    margin: 0 auto;
}

.arch-layer {
    display: flex;
    justify-content: center;
    gap: 16px;
    padding: 16px 0;
}

.arch-item {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 16px 24px;
    border-radius: 8px;
    text-align: center;
    min-width: 140px;
}

.arch-item-large {
    background: linear-gradient(135deg, rgba(0,102,255,0.2), rgba(0,198,255,0.1));
    border: 1px solid rgba(0,102,255,0.3);
    padding: 24px 40px;
    border-radius: 12px;
    text-align: center;
}

.arch-item-full {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 20px 40px;
    border-radius: 8px;
    text-align: center;
    width: 100%;
}

.arch-label {
    display: block;
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 4px;
}

.arch-desc {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.6);
}

.arch-badge {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    font-size: 0.7rem;
    padding: 4px 10px;
    border-radius: 20px;
    margin-bottom: 8px;
    font-weight: 600;
}

.arch-features {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 12px;
}

.arch-features span {
    font-size: 0.75rem;
    background: rgba(255,255,255,0.1);
    padding: 4px 12px;
    border-radius: 20px;
}

.arch-connector {
    display: flex;
    justify-content: center;
    padding: 8px 0;
}

.connector-line {
    width: 2px;
    height: 30px;
    background: linear-gradient(to bottom, var(--primary), rgba(0,102,255,0.3));
}

.connector-line.dashed {
    background: repeating-linear-gradient(to bottom, rgba(255,255,255,0.3), rgba(255,255,255,0.3) 4px, transparent 4px, transparent 8px);
}

.connector-pulse {
    display: none;
}

.data-sources-bar {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.data-sources-bar span {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
}

.data-sources-bar .more {
    color: var(--primary);
    font-weight: 500;
}

/* HyperFederate Section */
.section-federate {
    display: block;
    background: #fff;
}

.federate-visual {
    max-width: 1000px;
    margin: 0 auto 60px;
}

.federate-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.data-source-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.data-source {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
}

.data-source-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.federate-hub {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary), #00c6ff);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    box-shadow: 0 20px 40px rgba(0,102,255,0.3);
}

.federate-hub-label {
    font-size: 0.7rem;
    opacity: 0.8;
}

.federate-hub-name {
    font-size: 1rem;
}

.query-output {
    text-align: center;
}

.query-result-box {
    padding: 20px 30px;
    background: var(--dark);
    border-radius: 8px;
    color: #fff;
}

.query-result-box span {
    display: block;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.6);
    margin-bottom: 8px;
}

.query-result-box strong {
    font-size: 1.25rem;
}

.connection-lines {
    display: none;
}

/* Code Example */
.code-example {
    max-width: 900px;
    margin: 0 auto;
}

.code-block {
    background: var(--dark);
    border-radius: 12px;
    overflow: hidden;
}

.code-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-dot:nth-child(1) { background: #ff5f56; }
.code-dot:nth-child(2) { background: #ffbd2e; }
.code-dot:nth-child(3) { background: #27ca40; }

.code-title {
    margin-left: 12px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
}

.code-block pre {
    padding: 24px;
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
}

.code-block code {
    color: #e2e8f0;
}

.code-block .keyword { color: #c792ea; }
.code-block .function { color: #82aaff; }
.code-block .string { color: #c3e88d; }
.code-block .comment { color: #546e7a; }
.code-block .number { color: #f78c6c; }

/* KGDB Section */
#kgdb {
    display: block;
    background: var(--light);
}

.kgdb-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.kgdb-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.kgdb-content p {
    color: var(--gray);
    margin-bottom: 24px;
}

.kgdb-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.kgdb-stat {
    padding: 20px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.kgdb-stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
}

/* KGDB Features */
.kgdb-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.kgdb-feature {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--light);
    border-radius: 12px;
}

.feature-icon-small {
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.kgdb-feature strong {
    display: block;
    margin-bottom: 4px;
    font-size: 0.95rem;
}

.kgdb-feature p {
    font-size: 0.85rem;
    color: var(--gray);
    margin: 0;
}

/* KGDB Architecture */
.kgdb-architecture {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.arch-title {
    text-align: center;
    margin-bottom: 32px;
    font-size: 1.25rem;
}

.deploy-options {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.deploy-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: 12px;
    min-width: 200px;
}

.deploy-icon {
    color: var(--primary);
}

.deploy-info {
    display: flex;
    flex-direction: column;
}

.deploy-label {
    font-weight: 600;
    font-size: 0.95rem;
}

.deploy-desc {
    font-size: 0.8rem;
    color: var(--gray);
}

.deploy-badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
}

.deploy-badge.local {
    background: #d1fae5;
    color: #065f46;
}

.deploy-badge.scalable {
    background: #dbeafe;
    color: #1e40af;
}

.deploy-connector {
    flex-shrink: 0;
}

/* Standards Grid */
.standards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 32px;
}

.standard-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--light);
    border-radius: 8px;
}

.standard-icon {
    color: var(--primary);
}

.standard-item span {
    font-size: 0.85rem;
    font-weight: 500;
}

@media (max-width: 768px) {
    .kgdb-features {
        grid-template-columns: 1fr;
    }

    .deploy-options {
        flex-direction: column;
    }

    .standards-grid {
        grid-template-columns: 1fr;
    }
}

.kgdb-stat-label {
    font-size: 0.85rem;
    color: var(--gray);
}

.kgdb-visual {
    display: flex;
    justify-content: center;
}

.cta-badges {
    display: flex;
    gap: 16px;
    margin-top: 20px;
}

.badge-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0,0,0,0.05);
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--dark);
    text-decoration: none;
    font-family: monospace;
}

.badge-link:hover {
    background: rgba(0,0,0,0.1);
}

.badge-link svg {
    width: 16px;
    height: 16px;
}

/* Core Concepts Section */
#concepts {
    background: var(--light);
}

/* Concepts Layout with Sidebar */
.concepts-layout {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 40px;
    max-width: 1200px;
}

.concepts-nav {
    position: sticky;
    top: 100px;
    height: fit-content;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}

.concepts-nav-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--gray);
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.concept-link {
    display: block;
    padding: 8px 12px;
    font-size: 0.85rem;
    color: var(--gray);
    text-decoration: none;
    border-radius: 6px;
    margin-bottom: 4px;
    transition: all 0.2s;
}

.concept-link:hover {
    background: var(--light);
    color: var(--primary);
}

.concepts-content {
    min-width: 0;
}

/* Formula Discovery Styles */
.formula-example {
    display: flex;
    align-items: stretch;
    gap: 24px;
    flex-wrap: wrap;
}

.formula-before, .formula-after {
    flex: 1;
    min-width: 260px;
    padding: 20px;
    border-radius: 12px;
}

.formula-before {
    background: #fff5f5;
    border: 1px solid #fed7d7;
}

.formula-after {
    background: #f0fff4;
    border: 1px solid #c6f6d5;
}

.formula-before strong, .formula-after strong {
    display: block;
    margin-bottom: 12px;
    font-size: 0.9rem;
}

.formula-data, .formula-graph {
    background: var(--dark);
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 12px;
}

.formula-data code, .formula-graph code {
    display: block;
    font-size: 0.75rem;
    color: #e2e8f0;
    padding: 3px 0;
}

.formula-problem {
    font-size: 0.8rem;
    color: #e53e3e;
}

.formula-benefit {
    font-size: 0.8rem;
    color: #38a169;
}

.formula-arrow {
    display: flex;
    align-items: center;
    font-size: 2rem;
    color: var(--gray);
}

@media (max-width: 900px) {
    .concepts-layout {
        grid-template-columns: 1fr;
    }

    .concepts-nav {
        position: static;
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .concepts-nav-title {
        width: 100%;
    }

    .concept-link {
        margin-bottom: 0;
    }
}

.concept-block {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 32px;
}

.concept-header {
    margin-bottom: 24px;
}

.concept-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.concept-subtitle {
    font-size: 0.9rem;
    color: var(--gray);
}

.concept-value {
    margin-top: 20px;
    padding: 16px;
    background: rgba(0,102,255,0.05);
    border-left: 3px solid var(--primary);
    border-radius: 0 8px 8px 0;
    font-size: 0.9rem;
}

.concept-detail {
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--light);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--gray);
}

/* Dynamic Proxy vs MCP */
.concept-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.compare-card {
    padding: 20px;
    border-radius: 8px;
}

.compare-card.bad {
    background: #fff5f5;
    border: 1px solid #fed7d7;
}

.compare-card.good {
    background: #f0fff4;
    border: 1px solid #c6f6d5;
}

.compare-label {
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 12px;
}

.compare-flow {
    font-family: monospace;
    font-size: 0.8rem;
    color: var(--gray);
    margin-bottom: 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.compare-points {
    list-style: none;
    font-size: 0.85rem;
}

.compare-points li {
    padding: 4px 0;
}

/* Thinking Events Flow */
.thinking-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.thinking-step {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: var(--light);
    padding: 16px;
    border-radius: 8px;
    min-width: 200px;
}

.step-number {
    width: 28px;
    height: 28px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.step-content strong {
    display: block;
    font-size: 0.875rem;
    margin-bottom: 4px;
}

.step-content p {
    font-size: 0.8rem;
    color: var(--gray);
    margin-bottom: 8px;
}

.step-content code {
    font-size: 0.75rem;
    background: rgba(0,102,255,0.1);
    padding: 4px 8px;
    border-radius: 4px;
    display: inline-block;
}

.thinking-arrow {
    font-size: 1.5rem;
    color: var(--gray);
}

/* Memory Grid */
.memory-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.memory-card {
    text-align: center;
    padding: 20px;
    background: var(--light);
    border-radius: 8px;
}

.memory-icon {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: #fff;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto 12px;
}

.memory-card strong {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.memory-card p {
    font-size: 0.8rem;
    color: var(--gray);
}

/* Runtime Grid */
.runtime-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.runtime-card {
    padding: 20px;
    background: var(--light);
    border-radius: 8px;
}

.runtime-card strong {
    display: block;
    margin-bottom: 8px;
}

.runtime-card p {
    font-size: 0.875rem;
    color: var(--gray);
    margin-bottom: 8px;
}

.runtime-use {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 500;
}

/* Pattern Flow */
.pattern-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.pattern-step {
    text-align: center;
}

.pattern-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}

.pattern-box {
    padding: 16px 20px;
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.8rem;
    min-width: 140px;
}

.pattern-arrow {
    font-size: 1.25rem;
    color: var(--gray);
}

/* LTN Diagram */
.ltn-diagram {
    display: flex;
    align-items: stretch;
    gap: 24px;
}

.ltn-side {
    flex: 1;
    padding: 20px;
    background: var(--light);
    border-radius: 8px;
}

.ltn-side strong {
    display: block;
    margin-bottom: 12px;
    font-size: 0.9rem;
}

.ltn-side code {
    display: block;
    padding: 12px;
    background: var(--dark);
    color: #e2e8f0;
    border-radius: 6px;
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.ltn-problem {
    font-size: 0.8rem;
    color: #e53e3e;
}

.ltn-solution {
    font-size: 0.8rem;
    color: #38a169;
}

.ltn-vs {
    display: flex;
    align-items: center;
    font-weight: 600;
    color: var(--gray);
}

/* RAG Comparison */
.rag-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.rag-card {
    padding: 20px;
    border-radius: 8px;
}

.rag-card.problem {
    background: #fff5f5;
    border: 1px solid #fed7d7;
}

.rag-card.solution {
    background: #f0fff4;
    border: 1px solid #c6f6d5;
}

.rag-card strong {
    display: block;
    margin-bottom: 8px;
}

.rag-card > p {
    font-size: 0.875rem;
    color: var(--gray);
    margin-bottom: 12px;
    font-style: italic;
}

.rag-result {
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 12px;
}

.rag-result.bad {
    background: rgba(229,62,62,0.1);
}

.rag-result.good {
    background: rgba(56,161,105,0.1);
}

.rag-result span {
    display: block;
    font-size: 0.75rem;
    padding: 4px 0;
    font-family: monospace;
}

.rag-issue {
    font-size: 0.8rem;
    color: #e53e3e;
}

.rag-success {
    font-size: 0.8rem;
    color: #38a169;
}

/* Architecture Flow Visual */
.concept-visual {
    margin-bottom: 24px;
}

.arch-flow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 24px;
    background: var(--light);
    border-radius: 8px;
}

.flow-box {
    padding: 12px 24px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.875rem;
    font-family: monospace;
}

.flow-box.highlight {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    font-weight: 600;
}

.flow-arrow {
    color: var(--gray);
    font-size: 1.25rem;
}

/* Neuro-Symbolic Visual */
.neuro-symbolic {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.ns-side {
    flex: 1;
    min-width: 140px;
    max-width: 180px;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
}

.ns-side.neural {
    background: #fef3c7;
    border: 1px solid #f59e0b;
}

.ns-side.symbolic {
    background: #dbeafe;
    border: 1px solid #3b82f6;
}

.ns-side.result {
    background: #d1fae5;
    border: 1px solid #10b981;
}

.ns-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.ns-side strong {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.ns-side p {
    font-size: 0.75rem;
    color: var(--gray);
    margin: 4px 0;
}

.ns-combine, .ns-equals {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray);
}

/* Tribal Knowledge */
.tribal-flow {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.tribal-card {
    flex: 1;
    min-width: 260px;
    max-width: 340px;
    padding: 24px;
    border-radius: 12px;
    text-align: center;
}

.tribal-card.problem {
    background: #fff5f5;
    border: 1px solid #fed7d7;
}

.tribal-card.solution {
    background: #f0fff4;
    border: 1px solid #c6f6d5;
}

.tribal-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.tribal-card strong {
    display: block;
    font-size: 1rem;
    margin-bottom: 12px;
}

.tribal-card p {
    font-size: 0.85rem;
    color: var(--gray);
    margin: 6px 0;
    font-style: italic;
}

.tribal-risk {
    margin-top: 12px;
    padding: 8px;
    background: rgba(229,62,62,0.1);
    border-radius: 6px;
    font-size: 0.8rem;
    color: #e53e3e;
    font-style: normal !important;
}

.tribal-benefit {
    margin-top: 12px;
    padding: 8px;
    background: rgba(56,161,105,0.1);
    border-radius: 6px;
    font-size: 0.8rem;
    color: #38a169;
}

.tribal-graph {
    text-align: left;
    background: var(--dark);
    padding: 12px;
    border-radius: 6px;
    margin: 12px 0;
}

.tribal-graph code {
    display: block;
    font-size: 0.7rem;
    color: #e2e8f0;
    padding: 2px 0;
}

.tribal-arrow {
    display: flex;
    align-items: center;
    font-size: 2rem;
    color: var(--gray);
}

/* HDFR Distributed Architecture */
.hdfr-diagram {
    background: var(--light);
    border-radius: 12px;
    padding: 24px;
}

.hdfr-layer {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.hdfr-box {
    flex: 1;
    min-width: 180px;
    max-width: 220px;
    padding: 16px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 8px;
    text-align: center;
}

.hdfr-box.wide {
    max-width: 100%;
    flex: 1 1 100%;
}

.hdfr-box strong {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 8px;
    color: var(--primary);
}

.hdfr-box p {
    font-size: 0.8rem;
    color: var(--gray);
}

.hdfr-stats {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.hdfr-stats span {
    font-size: 0.85rem;
}

.hdfr-stats strong {
    color: var(--primary);
}

/* Federated Query Example */
.federated-example {
    background: var(--dark);
    border-radius: 8px;
    overflow: hidden;
}

.federated-example pre {
    padding: 20px;
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.8rem;
    line-height: 1.6;
}

.federated-example code {
    color: #e2e8f0;
}

/* SDK Tabs */
.sdk-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.sdk-tab {
    padding: 8px 16px;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 6px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

.sdk-tab:hover {
    border-color: var(--primary);
}

.sdk-tab.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.sdk-code {
    background: var(--dark);
    border-radius: 8px;
    overflow: hidden;
}

.sdk-code.hidden {
    display: none;
}

.sdk-code pre {
    padding: 20px;
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.8rem;
    line-height: 1.6;
}

.sdk-code code {
    color: #e2e8f0;
    font-size: 0.9rem;
    line-height: 1.7;
}

/* Syntax highlighting for SDK code */
.sdk-code .keyword {
    color: #c792ea;
    font-weight: 500;
}
.sdk-code .string {
    color: #c3e88d;
}
.sdk-code .comment {
    color: #7c8896;
    font-style: italic;
}
.sdk-code .function {
    color: #82aaff;
}
.sdk-code .number {
    color: #f78c6c;
}
.sdk-code .property {
    color: #89ddff;
}
.sdk-code .class-name {
    color: #ffcb6b;
}

/* Lego Architecture */
.lego-architecture {
    max-width: 900px;
    margin: 40px auto;
    background: #fff;
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--border);
}

.lego-layer {
    margin-bottom: 8px;
}

.lego-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--gray);
    margin-bottom: 8px;
    padding-left: 8px;
}

.lego-blocks {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.lego-blocks.sources {
    flex-wrap: wrap;
}

.lego-block {
    padding: 16px 20px;
    border-radius: 8px;
    text-align: center;
    flex: 1;
    max-width: 200px;
    font-size: 0.85rem;
    box-shadow: 0 4px 0 rgba(0,0,0,0.2);
    transition: transform 0.2s;
}

.lego-block:hover {
    transform: translateY(-2px);
}

.lego-block.wide {
    max-width: 100%;
    flex: 1 1 100%;
}

.lego-block strong {
    display: block;
    margin-bottom: 4px;
}

.lego-block span {
    font-size: 0.75rem;
    opacity: 0.8;
}

.lego-block.user {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.lego-block.product {
    background: linear-gradient(135deg, #0066FF 0%, #00c6ff 100%);
    color: #fff;
}

.lego-block.engine {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: #fff;
}

.lego-block.data {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: #fff;
}

.lego-block.source {
    background: #f0f4f8;
    color: var(--dark);
    border: 1px solid var(--border);
    flex: 0 1 auto;
    padding: 12px 16px;
}

/* Runtime Section */
.runtime-section {
    margin-top: 60px;
    text-align: center;
    background: #f8fafc;
    padding: 40px 32px;
    border-radius: 16px;
}

.runtime-section h3 {
    color: var(--dark);
    margin-bottom: 24px;
    font-size: 1.5rem;
}

.runtime-options {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.runtime-option {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    flex: 1;
    max-width: 250px;
    text-align: center;
}

.runtime-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.runtime-option strong {
    display: block;
    color: var(--dark);
    margin-bottom: 8px;
}

.runtime-option p {
    font-size: 0.8rem;
    color: var(--gray);
}

/* HyperFederate Section */
.section-federate {
    background: #fff;
}

.federation-canvas-wrap {
    position: relative;
    width: 100%;
    height: 400px;
    margin: 40px 0;
}

#federation-canvas {
    width: 100%;
    height: 100%;
}

.federation-labels {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.fed-label {
    position: absolute;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 20px;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.fed-snowflake { top: 20%; left: 10%; color: #29B5E8; }
.fed-bigquery { top: 20%; right: 10%; color: #4285F4; }
.fed-databricks { bottom: 30%; left: 5%; color: #FF3621; }
.fed-postgres { bottom: 30%; right: 5%; color: #336791; }
.fed-s3 { bottom: 10%; left: 25%; color: #FF9900; }
.fed-kg { bottom: 10%; right: 25%; color: #10B981; }

.fed-center-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    background: linear-gradient(135deg, var(--primary), #0052cc);
    color: #fff;
    padding: 16px 32px;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,102,255,0.4);
    border: 2px solid rgba(255,255,255,0.2);
}

.fed-brand {
    display: block;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.fed-latency {
    display: block;
    font-size: 0.75rem;
    opacity: 0.9;
}

.federation-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.fed-feature {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 20px;
    background: var(--light);
    border-radius: 12px;
}

.fed-feature-icon {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.fed-feature strong {
    display: block;
    margin-bottom: 4px;
}

.fed-feature p {
    font-size: 0.85rem;
    color: var(--gray);
}

.federation-code {
    margin-top: 40px;
}

.federation-code pre {
    background: var(--dark);
    border-radius: 12px;
    padding: 24px;
    overflow-x: auto;
}

.federation-code code {
    color: #e2e8f0;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .federation-features {
        grid-template-columns: 1fr;
    }

    .federation-canvas-wrap {
        height: 300px;
    }

    .fed-label {
        font-size: 0.7rem;
        padding: 4px 8px;
    }
}

/* Use Cases Grid */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.use-case-card {
    display: block;
    padding: 24px;
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: 12px;
    text-decoration: none;
    color: var(--dark);
    transition: all 0.2s;
}

.use-case-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,102,255,0.1);
}

.use-case-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.use-case-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.use-case-card p {
    font-size: 0.85rem;
    color: var(--gray);
    margin-bottom: 12px;
    line-height: 1.5;
}

.use-case-link {
    font-size: 0.8rem;
    color: var(--primary);
    font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-headline {
        font-size: 2.5rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .stat-divider {
        display: none;
    }

    .why-grid,
    .products-grid,
    .use-cases-grid,
    .approach-grid,
    .problem-flow {
        grid-template-columns: 1fr;
    }

    .product-card.featured {
        grid-column: span 1;
    }

    .team-grid {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    /* Concepts responsive */
    .concept-comparison,
    .rag-comparison,
    .runtime-grid,
    .ltn-diagram {
        grid-template-columns: 1fr;
        flex-direction: column;
    }

    .memory-grid {
        grid-template-columns: 1fr;
    }

    .thinking-flow {
        flex-direction: column;
    }

    .thinking-arrow {
        transform: rotate(90deg);
    }

    .pattern-flow {
        flex-direction: column;
    }

    .pattern-arrow {
        transform: rotate(90deg);
    }
}

/* Products Layout with Sidebar */
.products-layout {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 40px;
    max-width: 1200px;
}

.products-nav {
    position: sticky;
    top: 100px;
    height: fit-content;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.products-nav-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--gray);
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.product-link {
    display: block;
    padding: 10px 14px;
    font-size: 0.9rem;
    color: var(--gray);
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 4px;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.product-link:hover {
    background: #f0f4f8;
    color: var(--dark);
}

.product-link.active {
    background: rgba(0,102,255,0.1);
    color: var(--primary);
    border-left-color: var(--primary);
}

.products-content {
    min-width: 0;
}

/* Product Detail Card */
.product-detail {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    margin-bottom: 24px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    display: none;
}

.product-detail:first-of-type {
    display: block;
}

.product-diagram {
    background: #f0f4f8;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
}

.product-svg {
    width: 100%;
    max-width: 500px;
    height: auto;
    display: block;
    margin: 0 auto;
}

.product-info h3 {
    color: var(--dark);
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.product-info > p {
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.6;
}

.product-stats {
    display: flex;
    gap: 24px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.product-stat {
    text-align: center;
    padding: 12px 16px;
    background: #f0f4f8;
    border-radius: 8px;
    min-width: 100px;
}

.product-stat strong {
    display: block;
    color: var(--primary);
    font-size: 1.25rem;
    margin-bottom: 4px;
}

.product-stat span {
    font-size: 0.75rem;
    color: var(--gray);
}

.product-features-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.product-features-list li {
    padding: 8px 0;
    color: var(--gray);
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border);
}

.product-features-list li:last-child {
    border-bottom: none;
}

.product-features-list strong {
    color: var(--dark);
}

@media (max-width: 900px) {
    .products-layout {
        grid-template-columns: 1fr;
    }

    .products-nav {
        position: static;
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .products-nav-title {
        width: 100%;
    }

    .product-link {
        margin-bottom: 0;
        border-left: none;
        border-bottom: 3px solid transparent;
    }

    .product-link.active {
        border-left-color: transparent;
        border-bottom-color: var(--primary);
    }
}

/* Ontology Diagram */
.ontology-diagram {
    background: #f0f4f8;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
}

.concept-svg {
    width: 100%;
    max-width: 500px;
    height: auto;
    display: block;
    margin: 0 auto;
}

.ontology-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}

.ontology-feature {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
}

.ontology-feature strong {
    display: block;
    margin-bottom: 8px;
    color: var(--primary);
}

.ontology-feature p {
    font-size: 0.85rem;
    color: var(--gray);
    margin: 0;
}

/* Explainable AI Flow */
.explainable-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.explain-step {
    text-align: center;
    padding: 16px;
}

.explain-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 1.25rem;
    border: 2px solid;
}

.explain-step strong {
    display: block;
    margin-bottom: 4px;
}

.explain-step p {
    font-size: 0.85rem;
    color: var(--gray);
    margin: 0;
}

.explain-arrow {
    font-size: 1.5rem;
    color: var(--gray);
}

/* Proof Chain Example */
.proof-example {
    background: #f0f4f8;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}

.proof-title {
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--gray);
    font-size: 0.85rem;
}

.proof-chain {
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    font-size: 0.85rem;
}

.proof-step {
    padding: 8px 12px;
    border-left: 2px solid var(--border);
    margin-left: 12px;
    color: var(--dark);
}

.proof-source {
    color: var(--primary);
    font-size: 0.75rem;
}

.proof-result {
    padding: 12px;
    background: rgba(16,185,129,0.1);
    border: 1px solid #10b981;
    border-radius: 6px;
    color: #10b981;
    font-weight: 600;
    margin-top: 12px;
}

/* Human in the Loop Diagram */
.human-loop-diagram {
    background: #f0f4f8;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
}

@media (max-width: 768px) {
    .ontology-features {
        grid-template-columns: 1fr;
    }

    .explainable-flow {
        flex-direction: column;
    }

    .explain-arrow {
        transform: rotate(90deg);
    }
}

/* ============================================
   BLOG FRAMEWORK STYLES
   ============================================ */

.blog-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    min-height: 600px;
}

/* Blog Navigation */
.blog-nav {
    background: #f8fafc;
    border-radius: 12px;
    padding: 24px;
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
}

.blog-nav-header {
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--dark);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.blog-nav-year {
    font-weight: 700;
    font-size: 1rem;
    color: var(--primary);
    margin-top: 20px;
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
}

.blog-nav-year:first-child {
    margin-top: 0;
}

.blog-nav-month {
    font-weight: 600;
    font-size: 0.75rem;
    color: var(--gray);
    margin-top: 12px;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.blog-nav-link {
    display: block;
    padding: 10px 12px;
    margin: 4px 0;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.blog-nav-link:hover {
    background: rgba(0, 102, 255, 0.08);
    border-left-color: var(--primary);
}

.blog-nav-link.active {
    background: rgba(0, 102, 255, 0.12);
    border-left-color: var(--primary);
}

.blog-nav-title {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--dark);
    line-height: 1.4;
}

.blog-nav-date {
    display: block;
    font-size: 0.7rem;
    color: var(--gray);
    margin-top: 4px;
}

.blog-nav-empty,
.blog-loading {
    color: var(--gray);
    font-size: 0.85rem;
    text-align: center;
    padding: 20px;
}

/* Blog Content */
.blog-content {
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--border);
    min-height: 500px;
}

.blog-welcome {
    text-align: center;
    padding: 60px 20px;
}

.blog-welcome h3 {
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 12px;
}

.blog-welcome p {
    color: var(--gray);
    margin-bottom: 24px;
}

.blog-latest-link {
    display: inline-block;
    padding: 16px 24px;
    background: linear-gradient(135deg, #f0f7ff 0%, #e0efff 100%);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid rgba(0, 102, 255, 0.2);
}

.blog-latest-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.15);
}

.blog-latest-link strong {
    display: block;
    color: var(--primary);
    font-size: 1rem;
    margin-bottom: 4px;
}

.blog-latest-link span {
    color: var(--gray);
    font-size: 0.85rem;
}

/* Blog Post */
.blog-post-header {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.blog-post-header h1 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--dark);
    line-height: 1.2;
    margin-bottom: 16px;
}

.blog-post-meta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.blog-post-date {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.blog-post-author {
    color: var(--gray);
    font-size: 0.9rem;
}

.blog-post-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.blog-tag {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, #f0f7ff 0%, #e0efff 100%);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
}

/* Blog Post Content Typography */
.blog-post-content {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #374151;
}

.blog-post-content h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--dark);
    margin: 48px 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border);
}

.blog-post-content h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark);
    margin: 36px 0 16px;
}

.blog-post-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark);
    margin: 28px 0 12px;
}

.blog-post-content p {
    margin-bottom: 20px;
}

.blog-post-content a {
    color: var(--primary);
    text-decoration: underline;
    text-decoration-color: rgba(0, 102, 255, 0.3);
    text-underline-offset: 2px;
    transition: all 0.2s ease;
}

.blog-post-content a:hover {
    text-decoration-color: var(--primary);
}

.blog-post-content ul,
.blog-post-content ol {
    margin: 20px 0;
    padding-left: 24px;
}

.blog-post-content li {
    margin-bottom: 10px;
}

.blog-post-content blockquote {
    margin: 28px 0;
    padding: 20px 24px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-left: 4px solid var(--primary);
    border-radius: 0 12px 12px 0;
    font-style: italic;
    color: #4b5563;
}

.blog-post-content blockquote p:last-child {
    margin-bottom: 0;
}

/* Code Blocks */
.blog-post-content pre {
    margin: 24px 0;
    border-radius: 12px;
    overflow: hidden;
}

.blog-post-content pre code {
    display: block;
    padding: 20px 24px;
    font-size: 0.9rem;
    line-height: 1.6;
    overflow-x: auto;
}

.blog-post-content code:not(pre code) {
    background: #f1f5f9;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.9em;
    color: #e11d48;
}

/* ASCII Art */
.ascii-art {
    background: #0f172a;
    color: #10b981;
    padding: 24px;
    border-radius: 12px;
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    line-height: 1.4;
    overflow-x: auto;
    white-space: pre;
}

/* Mermaid Diagrams */
.mermaid {
    margin: 32px 0;
    padding: 24px;
    background: #f8fafc;
    border-radius: 12px;
    text-align: center;
}

.mermaid svg {
    max-width: 100%;
    height: auto;
}

/* Blog Error */
.blog-error {
    text-align: center;
    padding: 60px 20px;
}

.blog-error h3 {
    color: #e11d48;
    margin-bottom: 12px;
}

.blog-error p {
    color: var(--gray);
}

/* Mobile Responsive */
@media (max-width: 900px) {
    .blog-layout {
        grid-template-columns: 1fr;
    }

    .blog-nav {
        position: static;
        max-height: none;
        margin-bottom: 24px;
    }

    .blog-content {
        padding: 24px;
    }

    .blog-post-header h1 {
        font-size: 1.6rem;
    }

    .blog-post-content {
        font-size: 1rem;
    }
}

/* Blog Tree Navigation */
.blog-tree {
    font-size: 0.9rem;
}

.tree-year {
    margin-bottom: 8px;
}

.tree-year-label,
.tree-month-label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    cursor: pointer;
    border-radius: 6px;
    transition: background 0.2s;
    user-select: none;
}

.tree-year-label {
    font-weight: 700;
    color: var(--dark);
    background: #f1f5f9;
}

.tree-year-label:hover {
    background: #e2e8f0;
}

.tree-month-label {
    font-weight: 600;
    color: var(--gray);
    margin-left: 12px;
    font-size: 0.85rem;
}

.tree-month-label:hover {
    background: #f8fafc;
}

.tree-icon {
    font-size: 0.7rem;
    transition: transform 0.2s;
}

.tree-year.collapsed .tree-year-label .tree-icon,
.tree-month.collapsed .tree-month-label .tree-icon {
    transform: rotate(-90deg);
}

.tree-year-content,
.tree-month-content {
    overflow: hidden;
    transition: max-height 0.3s;
}

.tree-year.collapsed .tree-year-content,
.tree-month.collapsed .tree-month-content {
    display: none;
}

.tree-month {
    margin: 4px 0;
}

.tree-month-content {
    margin-left: 20px;
}

.tree-post {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 12px;
    margin: 4px 0 4px 12px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--dark);
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.tree-post:hover {
    background: rgba(0, 102, 255, 0.08);
    border-left-color: var(--primary);
}

.tree-post.active {
    background: rgba(0, 102, 255, 0.12);
    border-left-color: var(--primary);
}

.tree-post-icon {
    flex-shrink: 0;
    font-size: 1rem;
}

.tree-post-title {
    font-size: 0.85rem;
    line-height: 1.4;
    font-weight: 500;
}

.tree-empty {
    color: var(--gray);
    text-align: center;
    padding: 20px;
    font-size: 0.9rem;
}