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

:root {
    --primary-color: #0052CC;
    --primary-hover: #0747A6;
    --primary-light: #E6F0FF;
    --secondary-color: #5E6C84;
    --accent-color: #00875A;
    --background: #FAFBFC;
    --surface: #FFFFFF;
    --surface-raised: #FFFFFF;
    --text-primary: #172B4D;
    --text-secondary: #5E6C84;
    --text-tertiary: #8993A4;
    --border: #dfe1e6;
    --border-hover: #d0d2d5;
    --shadow-sm: 0 1px 2px rgba(9, 30, 66, 0.08);
    --shadow-md: 0 3px 8px rgba(9, 30, 66, 0.12);
    --shadow-lg: 0 8px 24px rgba(9, 30, 66, 0.15);
    --shadow-xl: 0 16px 40px rgba(9, 30, 66, 0.18);
    --sidebar-width: 300px;
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background);
    display: flex;
    min-height: 100vh;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--background);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: var(--radius-sm);
    border: 2px solid var(--background);
    transition: background var(--transition);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-hover) var(--background);
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 4rem 3rem;
    max-width: 1400px;
    width: 100%;
}

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

.page-header {
    margin-bottom: 4rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.page-header h1 {
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.page-header p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.5;
    font-weight: 400;
}

.hero-section {
    margin-bottom: 5rem;
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--surface) 0%, var(--background) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: var(--primary-light);
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 0.02em;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 3rem;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.featured-projects,
.content-section {
    margin-bottom: 5rem;
}

.featured-projects h2,
.content-section h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.project-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    opacity: 0;
    transition: opacity var(--transition);
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
}

.project-card:hover::before {
    opacity: 1;
}

.project-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--primary-light);
    color: var(--primary-color);
    border-radius: var(--radius-md);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.project-card h3 {
    font-size: 1.625rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.project-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.65;
    font-size: 1rem;
    flex: 1;
}

.project-meta {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.75rem;
}

.meta-tag {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background: var(--background);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-weight: 600;
    border: 1px solid var(--border);
}

.btn-primary {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    letter-spacing: 0.01em;
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--surface);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all var(--transition);
    border: 1px solid var(--border);
    cursor: pointer;
    letter-spacing: 0.01em;
}

.btn-secondary:hover {
    background: var(--surface);
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.content-block {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-sm);
}

.content-block h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.content-block h3 {
    font-size: 1.375rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.content-block p {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    line-height: 1.7;
    font-size: 1rem;
}

.content-block ul {
    margin-left: 1.75rem;
    margin-bottom: 1.5rem;
}

.content-block ul li {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.7;
    padding-left: 0.5rem;
}

.content-block ul li strong {
    color: var(--text-primary);
    font-weight: 600;
}

.features-section {
    margin-bottom: 5rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.25rem;
    display: block;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.9375rem;
}

.faq-section {
    margin-bottom: 5rem;
}

.faq-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border-hover);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.75rem 2rem;
    cursor: pointer;
    user-select: none;
    transition: all var(--transition);
}

.faq-question:hover {
    background: var(--primary-light);
}

.faq-question h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    margin: 0;
}

.faq-toggle {
    font-size: 1.75rem;
    font-weight: 300;
    color: var(--primary-color);
    transition: transform var(--transition);
    line-height: 1;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 2rem 2rem 2rem;
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1rem;
}

/* Make mailto links in FAQ answers match paragraph text color and be underlined */
.faq-answer a {
    color: inherit;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-decoration-skip-ink: auto;
}

.faq-answer a:hover,
.faq-answer a:focus {
    color: inherit;
    text-decoration: underline;
}

.info-section {
    margin-bottom: 3rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.info-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.info-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.info-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.info-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9375rem;
}

@media (max-width: 768px) {
    .main-content {
        margin-left: 0;
        padding: 2rem 1.25rem;
    }

    .page-header {
        margin-bottom: 2.5rem;
        padding-bottom: 1.5rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .page-header p {
        font-size: 1rem;
    }

    .hero-section {
        padding: 3rem 0;
        margin-bottom: 3rem;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-description {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .section-header h2 {
        font-size: 1.75rem;
    }

    .section-header p {
        font-size: 1rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .content-block {
        padding: 2rem;
    }

    .featured-projects h2,
    .content-section h2 {
        font-size: 1.5rem;
    }

    .faq-question {
        padding: 1.25rem 1.5rem;
    }

    .faq-question h3 {
        font-size: 1rem;
    }

    .faq-answer p {
        padding: 0 1.5rem 1.5rem 1.5rem;
        font-size: 0.9375rem;
    }

    .info-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .info-card {
        padding: 1.5rem;
    }
}

.license-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.license-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
}

.license-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary-hover);
}

.license-btn.active {
    background: var(--primary-color);
    color: var(--surface);
    border-color: var(--primary-color);
}

#license-content {
    line-height: 1.8;
}

#license-content h1 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

#license-content h1:first-child {
    margin-top: 0;
}

#license-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 1.75rem;
    margin-bottom: 0.875rem;
    color: var(--text-primary);
}

#license-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-top: 1.25rem;
    margin-bottom: 0.625rem;
    color: var(--text-primary);
}

#license-content p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

#license-content ul {
    margin: 1rem 0 1rem 2rem;
    list-style: disc outside;
}

#license-content li {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.6;
    padding-left: 0.25rem;
}

#license-content a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition);
}

#license-content a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

#license-content strong {
    font-weight: 600;
    color: var(--text-primary);
}