:root {
    --text-primary: #242424;
    --text-secondary: #6B6B6B;
    --text-tertiary: #B4B4B4;
    --border-light: #E6E6E6;
    --border-medium: #D1D1D1;
    --bg-primary: #FFFFFF;
    --bg-secondary: #FAFAFA;
    --bg-tertiary: #F5F5F5;
    --accent-dark: #000000;
    
    --font-serif: 'Charter', 'Georgia', 'Times New Roman', serif;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    
    --transition: 0.15s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-serif);
    font-size: 21px;
    line-height: 1.58;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1192px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow {
    max-width: 680px;
    margin: 0 auto;
    padding: 0 24px;
}

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo {
    font-family: var(--font-sans);
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-dark);
    text-decoration: none;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-medium);
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: 15px;
    transition: color var(--transition);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--accent-dark);
    transition: var(--transition);
}

.hero {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    padding: 120px 0 60px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 80px;
    align-items: center;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(42px, 6vw, 64px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 28px;
    color: var(--accent-dark);
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 18px;
    font-family: var(--font-sans);
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 24px;
    letter-spacing: -0.3px;
}

.hero-description {
    font-size: 21px;
    line-height: 1.58;
    color: var(--text-primary);
    margin-bottom: 36px;
}

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

.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    font-family: var(--font-sans);
    text-decoration: none;
    border-radius: 4px;
    transition: all var(--transition);
    border: 1px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: var(--accent-dark);
    color: white;
    border-color: var(--accent-dark);
}

.btn-primary:hover {
    background: var(--text-primary);
}

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

.btn-secondary:hover {
    background: var(--accent-dark);
    color: white;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    width: 100%;
    max-width: 360px;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.impact {
    padding: 80px 0;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.impact-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 60px;
    text-align: center;
}

.stat-number {
    font-family: var(--font-sans);
    font-size: 56px;
    font-weight: 700;
    color: var(--accent-dark);
    margin-bottom: 8px;
    letter-spacing: -1px;
}

.stat-label {
    font-size: 16px;
    font-family: var(--font-sans);
    color: var(--text-secondary);
    font-weight: 400;
}

section {
    padding: 80px 0;
}

.section-header {
    margin-bottom: 48px;
}

.section-label {
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(32px, 4vw, 44px);
    font-weight: 700;
    color: var(--accent-dark);
    margin-bottom: 16px;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.about-preview-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 80px;
}

.lead {
    font-size: 24px;
    line-height: 1.5;
    color: var(--text-primary);
    margin-bottom: 24px;
    font-weight: 400;
}

.about-preview-text p {
    margin-bottom: 20px;
    color: var(--text-primary);
}

.about-preview-highlights {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.highlight {
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 4px;
    border-left: 3px solid var(--accent-dark);
}

.highlight h3 {
    font-size: 18px;
    font-family: var(--font-sans);
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--accent-dark);
}

.highlight p {
    font-size: 16px;
    font-family: var(--font-sans);
    color: var(--text-secondary);
    line-height: 1.5;
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.work-item {
    background: var(--bg-primary);
    border-radius: 4px;
    padding: 32px;
    border: 1px solid var(--border-light);
    transition: all var(--transition);
}

.work-item:hover {
    border-color: var(--border-medium);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.work-item-featured {
    grid-column: span 2;
    background: var(--bg-secondary);
}

.work-tag {
    display: inline-block;
    padding: 4px 10px;
    background: var(--accent-dark);
    color: white;
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 2px;
    margin-bottom: 16px;
}

.work-content h3 {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.work-content img {
    max-width: 180px;
    height: auto;
    margin-bottom: 16px;
}

.work-description {
    margin-bottom: 16px;
    color: var(--text-primary);
    font-size: 18px;
}

.work-features {
    list-style: none;
    margin: 20px 0;
}

.work-features li {
    padding: 6px 0;
    padding-left: 24px;
    position: relative;
    font-family: var(--font-sans);
    font-size: 16px;
    color: var(--text-secondary);
}

.work-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-dark);
    font-weight: bold;
}

.essays-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 40px;
}

.essay-card {
    padding: 0;
    transition: all var(--transition);
}

.essay-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    align-items: center;
}

.essay-category {
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 400;
    color: var(--text-secondary);
}

.essay-reading-time {
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--text-tertiary);
}

.essay-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
    letter-spacing: -0.3px;
}

.essay-card h3 a {
    color: var(--accent-dark);
    text-decoration: none;
    transition: color var(--transition);
}

.essay-card h3 a:hover {
    color: var(--text-secondary);
}

.essay-subtitle {
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-size: 16px;
    font-family: var(--font-sans);
    line-height: 1.5;
}

.essay-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text-tertiary);
}

.section-cta {
    text-align: center;
    margin-top: 48px;
}

.newsletter {
    background: var(--bg-tertiary);
    padding: 80px 0;
    border-top: 1px solid var(--border-light);
}

.newsletter-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-content h2 {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--accent-dark);
    letter-spacing: -0.5px;
}

.newsletter-content p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.newsletter-form {
    display: flex;
    gap: 12px;
    margin: 24px 0;
}

.newsletter-form input {
    flex: 1;
    padding: 12px 16px;
    font-size: 16px;
    font-family: var(--font-sans);
    border: 1px solid var(--border-medium);
    border-radius: 4px;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--accent-dark);
}

.newsletter-note {
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text-tertiary);
}

.interactive-tools {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 40px;
}

.tool-card {
    background: var(--bg-primary);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.15);
}

.tool-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.tool-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--accent-dark);
}

.tool-card p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.footer {
    background: var(--bg-tertiary);
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-light);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-family: var(--font-sans);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--accent-dark);
}

.footer-section h4 {
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--accent-dark);
}

.footer-section p {
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 12px;
}

.footer-section a {
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-light);
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text-tertiary);
}

.page-header {
    padding: 120px 0 60px;
    text-align: center;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-light);
}

.page-title {
    font-family: var(--font-serif);
    font-size: clamp(40px, 6vw, 56px);
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.page-subtitle {
    font-size: 20px;
    font-family: var(--font-sans);
    color: var(--text-secondary);
}

.blog-filters {
    margin-bottom: 48px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-light);
}

.filter-label {
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.filter-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-medium);
    border-radius: 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 400;
    transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-dark);
    color: white;
    border-color: var(--accent-dark);
}

.posts-grid {
    display: grid;
    gap: 48px;
}

.post-card {
    padding: 32px 0;
    border-bottom: 1px solid var(--border-light);
}

.post-card:hover {
    opacity: 0.9;
}

.post-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.post-meta {
    display: flex;
    gap: 16px;
    align-items: center;
}

.post-category {
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 400;
    color: var(--text-secondary);
}

.post-reading-time {
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--text-tertiary);
}

.featured-badge {
    padding: 4px 10px;
    background: var(--accent-dark);
    color: white;
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: 2px;
}

.post-title {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.25;
    letter-spacing: -0.5px;
}

.post-title a {
    color: var(--accent-dark);
    text-decoration: none;
    transition: color var(--transition);
}

.post-title a:hover {
    color: var(--text-secondary);
}

.post-subtitle {
    font-size: 18px;
    font-family: var(--font-sans);
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.5;
}

.post-excerpt {
    color: var(--text-primary);
    margin-bottom: 16px;
}

.post-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
}

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

.tag {
    padding: 4px 10px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 13px;
    border-radius: 2px;
    font-weight: 400;
}

.post-read-more {
    display: inline-block;
    margin-top: 12px;
    color: var(--accent-dark);
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
}

.post-read-more:hover {
    color: var(--text-secondary);
}

.blog-post {
    padding-top: 80px;
}

.post-header {
    padding: 60px 0 40px;
    border-bottom: 1px solid var(--border-light);
}

.post-author-info {
    margin: 24px 0;
    padding: 20px 0;
    border-top: 1px solid var(--border-light);
}

.author-name {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 16px;
    margin-bottom: 4px;
    color: var(--accent-dark);
}

.post-date {
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text-tertiary);
}

.post-tags-header {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.post-content {
    padding: 60px 0;
}

.post-body {
    font-size: 21px;
    line-height: 1.58;
}

.post-body h2 {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 700;
    margin: 48px 0 20px;
    color: var(--accent-dark);
    letter-spacing: -0.5px;
}

.post-body h3 {
    font-size: 24px;
    font-weight: 700;
    margin: 32px 0 16px;
    letter-spacing: -0.3px;
}

.post-body p {
    margin-bottom: 28px;
}

.post-body ul,
.post-body ol {
    margin: 24px 0;
    padding-left: 32px;
}

.post-body li {
    margin-bottom: 8px;
}

.post-body blockquote {
    margin: 32px 0;
    padding: 20px 24px;
    border-left: 3px solid var(--accent-dark);
    background: var(--bg-secondary);
    font-style: italic;
    font-size: 21px;
    color: var(--text-primary);
}

.post-body code {
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 18px;
}

.post-body pre {
    background: #f5f5f5;
    border: 1px solid var(--border-light);
    padding: 20px;
    border-radius: 4px;
    overflow-x: auto;
    margin: 28px 0;
}

.post-body pre code {
    background: none;
    color: inherit;
    padding: 0;
}

.post-footer-section {
    padding: 48px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
}

.post-share {
    text-align: center;
    margin-bottom: 48px;
}

.post-share h3 {
    font-family: var(--font-sans);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--accent-dark);
}

.share-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.share-btn {
    padding: 10px 20px;
    border-radius: 4px;
    text-decoration: none;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition);
    border: 1px solid var(--border-medium);
    background: var(--bg-primary);
    color: var(--text-primary);
}

.share-btn:hover {
    background: var(--accent-dark);
    color: white;
    border-color: var(--accent-dark);
}

.related-posts {
    margin-bottom: 48px;
}

.related-posts h3 {
    font-family: var(--font-sans);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--accent-dark);
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.related-post-card {
    padding: 20px;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: 4px;
    transition: all var(--transition);
}

.related-post-card:hover {
    border-color: var(--border-medium);
}

.related-post-card h4 {
    margin: 8px 0;
    font-size: 18px;
    font-weight: 600;
    line-height: 1.3;
}

.related-post-card h4 a {
    color: var(--accent-dark);
    text-decoration: none;
}

.related-post-card h4 a:hover {
    color: var(--text-secondary);
}

.related-post-card .essay-meta {
    margin-top: 8px;
}

.post-author-bio {
    padding: 32px;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: 4px;
}

.post-author-bio h3 {
    font-family: var(--font-sans);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--accent-dark);
}

.post-author-bio p {
    font-family: var(--font-sans);
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.timeline {
    margin: 48px 0;
}

.timeline-item {
    display: grid;
    grid-template-columns: 16px 1fr;
    gap: 24px;
    margin-bottom: 40px;
}

.timeline-marker {
    width: 16px;
    height: 16px;
    background: var(--accent-dark);
    border-radius: 50%;
    margin-top: 4px;
}

.timeline-content h3 {
    font-family: var(--font-sans);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--accent-dark);
}

.timeline-period {
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text-tertiary);
    margin-bottom: 8px;
}

.timeline-description {
    font-family: var(--font-sans);
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin: 48px 0;
}

.expertise-card {
    padding: 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 4px;
}

.expertise-card h3 {
    font-family: var(--font-sans);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--accent-dark);
}

.expertise-card p {
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.quotes-section {
    margin: 80px 0;
}

.quotes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin: 48px 0;
}

.quote-card {
    padding: 32px;
    background: var(--bg-secondary);
    border-left: 3px solid var(--accent-dark);
    border-radius: 4px;
    margin: 0;
}

.quote-card p {
    font-family: var(--font-serif);
    font-size: 18px;
    font-style: italic;
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.quote-card cite {
    font-family: var(--font-sans);
    font-size: 14px;
    font-style: normal;
    color: var(--text-secondary);
}

.books-section {
    margin: 80px 0;
}

.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    margin: 48px 0;
}

.book-card {
    padding: 24px;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: 4px;
    transition: border-color var(--transition);
}

.book-card:hover {
    border-color: var(--border-medium);
}

.book-card h3 {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--accent-dark);
    line-height: 1.3;
}

.book-author {
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-tertiary);
    margin-bottom: 16px;
    font-style: italic;
}

.book-note {
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.tech-stack {
    margin: 48px 0;
    padding: 32px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 4px;
}

.tech-stack h3 {
    font-family: var(--font-sans);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--accent-dark);
}

.tech-stack ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.tech-stack li {
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--text-secondary);
    padding: 8px 0;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--accent-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-sans);
    font-size: 16px;
    border: 1px solid var(--border-medium);
    border-radius: 4px;
    transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-dark);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
    font-family: var(--font-serif);
    font-size: 16px;
    line-height: 1.5;
}

.alert {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 24px;
    font-family: var(--font-sans);
    font-size: 15px;
}

.alert-success {
    background: #e8f5e9;
    border: 1px solid #81c784;
    color: #2e7d32;
}

.alert-error {
    background: #ffebee;
    border: 1px solid #e57373;
    color: #c62828;
}

@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-image {
        order: -1;
    }
    
    .hero-image img {
        max-width: 280px;
    }
    
    .about-preview-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .work-item-featured {
        grid-column: span 1;
    }
    
    .impact-stats {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    body {
        font-size: 19px;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-links.active {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--bg-primary);
        padding: 20px 24px;
        border-bottom: 1px solid var(--border-light);
        gap: 16px;
    }
    
    .hero {
        min-height: auto;
        padding: 100px 0 40px;
    }
    
    .timeline-item {
        grid-template-columns: 12px 1fr;
        gap: 16px;
    }
    
    .timeline-marker {
        width: 12px;
        height: 12px;
    }
    
    .essays-grid,
    .work-grid,
    .expertise-grid,
    .quotes-grid,
    .books-grid {
        grid-template-columns: 1fr;
    }
}