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

:root {
    --background: 150 25% 12%;
    --foreground: 40 20% 92%;
    --card: 150 20% 15%;
    --card-foreground: 40 20% 92%;
    --primary: 40 20% 92%;
    --primary-foreground: 150 25% 12%;
    --secondary: 150 18% 18%;
    --secondary-foreground: 40 20% 92%;
    --muted: 150 18% 18%;
    --muted-foreground: 40 10% 65%;
    --accent: 150 18% 18%;
    --accent-foreground: 40 20% 92%;
    --border: 150 15% 25%;
    --ring: 40 15% 75%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: hsl(var(--background));
    color: hsl(var(--foreground));
    line-height: 1.6;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: hsl(var(--background) / 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid hsl(var(--border));
    z-index: 1000;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 18px;
    font-weight: 600;
    color: hsl(var(--foreground));
}

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

.nav-menu a {
    color: hsl(var(--muted-foreground));
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.nav-menu a:hover {
    color: hsl(var(--foreground));
}

.nav-actions {
    display: flex;
    gap: 12px;
}

/* Buttons */
.btn-primary {
    background: hsl(var(--primary));
    color: hsl(var(--primary-foreground));
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-secondary {
    background: hsl(var(--secondary));
    color: hsl(var(--secondary-foreground));
    border: 1px solid hsl(var(--border));
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-secondary:hover {
    background: hsl(var(--accent));
}

.btn-lg {
    padding: 12px 24px;
    font-size: 15px;
}

.btn-full {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 160px 0 120px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 4px 12px;
    background: hsl(var(--muted));
    border: 1px solid hsl(var(--border));
    border-radius: 20px;
    margin-bottom: 24px;
    font-size: 13px;
}

.badge {
    background: hsl(var(--foreground));
    color: hsl(var(--background));
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 11px;
}

.badge-text {
    color: hsl(var(--muted-foreground));
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-description {
    font-size: 18px;
    color: hsl(var(--muted-foreground));
    max-width: 700px;
    margin: 0 auto 32px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 80px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 80px;
    padding-top: 40px;
    border-top: 1px solid hsl(var(--border));
    max-width: 800px;
    margin: 0 auto;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 13px;
    color: hsl(var(--muted-foreground));
}

/* Platform Section */
.platform-section {
    padding: 120px 0;
    background: hsl(var(--card));
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-badge {
    display: inline-block;
    padding: 4px 12px;
    background: hsl(var(--muted));
    border: 1px solid hsl(var(--border));
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 18px;
    color: hsl(var(--muted-foreground));
}

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

.platform-card {
    background: hsl(var(--background));
    border: 1px solid hsl(var(--border));
    border-radius: 8px;
    padding: 24px;
    transition: border-color 0.2s;
}

.platform-card:hover {
    border-color: hsl(var(--ring));
}

.card-icon {
    width: 40px;
    height: 40px;
    background: hsl(var(--muted));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: hsl(var(--foreground));
}

.platform-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.platform-card p {
    font-size: 14px;
    color: hsl(var(--muted-foreground));
    line-height: 1.6;
}

/* Solutions Section */
.solutions-section {
    padding: 120px 0;
}

.solutions-tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 48px;
    background: hsl(var(--muted));
    padding: 4px;
    border-radius: 8px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.tab-btn {
    background: transparent;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    color: hsl(var(--muted-foreground));
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn:hover {
    color: hsl(var(--foreground));
}

.tab-btn.active {
    background: hsl(var(--background));
    color: hsl(var(--foreground));
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.solution-text h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}

.solution-text > p {
    font-size: 16px;
    color: hsl(var(--muted-foreground));
    margin-bottom: 24px;
}

.feature-list {
    list-style: none;
    margin-bottom: 32px;
}

.feature-list li {
    padding: 12px 0;
    padding-left: 24px;
    position: relative;
    font-size: 15px;
    color: hsl(var(--foreground));
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: hsl(var(--foreground));
}

.solution-visual {
    background: hsl(var(--card));
    border: 1px solid hsl(var(--border));
    border-radius: 8px;
    overflow: hidden;
}

.code-block {
    font-family: 'Courier New', monospace;
}

.code-header {
    padding: 12px 16px;
    background: hsl(var(--muted));
    border-bottom: 1px solid hsl(var(--border));
    font-size: 13px;
    color: hsl(var(--muted-foreground));
}

.code-block pre {
    padding: 24px;
    overflow-x: auto;
    font-size: 13px;
    line-height: 1.6;
}

.code-block code {
    color: hsl(var(--foreground));
}

/* Project Stats */
.project-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 24px;
}

.stat-box {
    background: hsl(var(--muted));
    border: 1px solid hsl(var(--border));
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}

.stat-box .stat-label {
    font-size: 12px;
    color: hsl(var(--muted-foreground));
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.stat-box .stat-value {
    font-size: 24px;
    font-weight: 700;
    color: hsl(var(--foreground));
}

.about-text {
    font-size: 15px;
    color: hsl(var(--muted-foreground));
    line-height: 1.7;
}

/* Features Section */
.features-section {
    padding: 120px 0;
    background: hsl(var(--card));
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-item p {
    font-size: 14px;
    color: hsl(var(--muted-foreground));
    line-height: 1.6;
}

/* Pricing Section */
.pricing-section {
    padding: 120px 0;
}

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

.pricing-card {
    background: hsl(var(--card));
    border: 1px solid hsl(var(--border));
    border-radius: 8px;
    padding: 32px;
    position: relative;
}

.pricing-card.featured {
    border-color: hsl(var(--ring));
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: hsl(var(--foreground));
    color: hsl(var(--background));
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.pricing-header {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid hsl(var(--border));
}

.pricing-header h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.price {
    margin: 16px 0;
}

.price-amount {
    font-size: 40px;
    font-weight: 700;
}

.price-period {
    font-size: 16px;
    color: hsl(var(--muted-foreground));
}

.pricing-header p {
    font-size: 14px;
    color: hsl(var(--muted-foreground));
}

.pricing-features {
    list-style: none;
    margin-bottom: 24px;
}

.pricing-features li {
    padding: 8px 0;
    font-size: 14px;
    color: hsl(var(--muted-foreground));
}

.pricing-features li::before {
    content: '✓ ';
    color: hsl(var(--foreground));
}

/* CTA Section */
.cta-section {
    padding: 120px 0;
    background: hsl(var(--card));
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.cta-content p {
    font-size: 18px;
    color: hsl(var(--muted-foreground));
    margin-bottom: 32px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    border-top: 1px solid hsl(var(--border));
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-section h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-section h5 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-section p {
    font-size: 14px;
    color: hsl(var(--muted-foreground));
}

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

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

.footer-section a {
    color: hsl(var(--muted-foreground));
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.footer-section a:hover {
    color: hsl(var(--foreground));
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid hsl(var(--border));
}

.footer-bottom p {
    font-size: 13px;
    color: hsl(var(--muted-foreground));
}

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

.footer-links a {
    font-size: 13px;
    color: hsl(var(--muted-foreground));
    text-decoration: none;
    transition: color 0.2s;
}

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

/* Return to Proposal Button */
.return-to-proposal {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: hsl(var(--primary));
    color: hsl(var(--primary-foreground));
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.2s ease;
    z-index: 9999;
}

.return-to-proposal:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.4);
}

/* Responsive */
@media (max-width: 1024px) {
    .platform-grid,
    .features-grid,
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .solution-content {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 32px;
    }

    .platform-grid,
    .features-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .solutions-tabs {
        flex-wrap: wrap;
    }

    .hero-actions,
    .cta-actions {
        flex-direction: column;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}