:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #7c3aed;
    --accent-color: #10b981;
    --text-color: #0f172a;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --container-width: 1200px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--bg-white);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

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

.hidden {
    display: none;
}

/* Header & Nav */
header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-color);
}

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

/* Buttons */
.btn-primary {
    background: var(--primary-color);
    color: white !important;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: var(--primary-hover);
}

.btn-large {
    background: var(--primary-color);
    color: white !important;
    padding: 1.25rem 2.75rem;
    border-radius: var(--radius-lg);
    font-weight: 700;
    font-size: 1.125rem;
    display: inline-block;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-large:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    background: var(--primary-hover);
}

.btn-outline {
    border: 2px solid var(--primary-color);
    color: var(--primary-color) !important;
    padding: 1.25rem 2.75rem;
    border-radius: var(--radius-lg);
    font-weight: 700;
    font-size: 1.125rem;
    display: inline-block;
    background: transparent;
    transition: var(--transition);
    cursor: pointer;
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-full {
    display: block;
    width: 100%;
    text-align: center;
    border: none;
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding: 8rem 0 6rem;
    background: #f0f9ff;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    color: var(--text-color);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.hero-badges {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-color);
    box-shadow: var(--shadow-sm);
}

/* Page Header */
.page-header {
    padding: 5rem 0;
    background-color: #0d1b2a;
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.8;
}

/* About Section */
.about {
    padding: 6rem 0;
    background: var(--bg-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

.about h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: 1.5rem;
    font-weight: 800;
    color: var(--text-color);
    line-height: 1.2;
}

.about h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    font-weight: 700;
    color: var(--text-color);
}

.about p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    font-size: 1.0625rem;
    line-height: 1.8;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
}

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

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 0.9375rem;
    margin: 0;
    color: var(--text-light);
    font-weight: 600;
}

.placeholder-img {
    background-color: #e9ecef;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    color: #adb5bd;
    font-weight: 600;
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--bg-light);
}

.features h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: 3rem;
    font-weight: 800;
    color: var(--text-color);
}

/* CTA Section / Pricing */
.cta-section {
    padding: 6rem 0;
    background: #f8fafc;
}

.cta-section h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: 1rem;
    font-weight: 800;
    color: var(--text-color);
}

.cta-section p {
    margin-bottom: 3rem;
    color: var(--text-light);
    font-size: 1.125rem;
}

.pricing-card {
    background: white;
    max-width: 500px;
    margin: 0 auto;
    padding: 3.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    text-align: left;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-color);
}

.pricing-card h3 {
    text-align: center;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.price {
    font-size: 4.5rem;
    font-weight: 900;
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 2rem;
    line-height: 1;
}

.price span {
    font-size: 1.75rem;
    font-weight: 600;
}

.pricing-card ul {
    margin-bottom: 2rem;
}

.pricing-card li {
    padding: 0.8rem 0;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    align-items: center;
}

.pricing-card li::before {
    content: "✓";
    margin-right: 1rem;
    color: #28a745;
    font-weight: bold;
}

.pricing-card .small {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.8rem;
    color: #999;
}

/* Payment Modal */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal.hidden {
    display: none;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    background: #ffffff;
    border-radius: 16px;
    max-width: 520px;
    width: 100%;
    padding: 2.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    z-index: 1;
}

.modal-content h2 {
    margin-bottom: 1rem;
}

.modal-content p {
    margin-bottom: 0.75rem;
    color: var(--text-light);
}

.payment-security {
    margin: 1.5rem 0 2rem;
}

.security-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.8rem;
    border-radius: 999px;
    background: #e8f5e9;
    color: #1b5e20;
    font-size: 0.85rem;
    font-weight: 600;
}

.lock-icon {
    width: 14px;
    height: 18px;
    border-radius: 3px;
    border: 2px solid #1b5e20;
    position: relative;
    box-sizing: border-box;
}

.lock-icon::before {
    content: "";
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 8px;
    border-radius: 12px 12px 0 0;
    border: 2px solid #1b5e20;
    border-bottom: none;
}

.payment-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.payment-badge {
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    font-size: 0.85rem;
    background: #f9fafb;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Enterprise Features */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 4rem 0;
}

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

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

.feature-card .icon {
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    background: rgba(37, 99, 235, 0.1);
    position: relative;
}

/* Brain Icon */
.icon-brain {
    background: rgba(37, 99, 235, 0.15);
}

.icon-brain::before {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    border-radius: 50% 50% 45% 45%;
    background: var(--primary-color);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.icon-brain::after {
    content: '';
    position: absolute;
    width: 30px;
    height: 30px;
    border-radius: 50% 50% 45% 45%;
    background: var(--secondary-color);
    top: 50%;
    left: 50%;
    transform: translate(-60%, -50%);
    opacity: 0.8;
}

/* Lightning Icon */
.icon-lightning {
    background: rgba(251, 191, 36, 0.15);
}

.icon-lightning::before {
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    border-left: 12px solid transparent;
    border-right: 12px solid transparent;
    border-bottom: 20px solid #f59e0b;
    top: 30%;
    left: 50%;
    transform: translateX(-50%) rotate(180deg);
}

.icon-lightning::after {
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 16px solid #fbbf24;
    top: 50%;
    left: 50%;
    transform: translateX(-50%);
}

/* Globe Icon */
.icon-globe {
    background: rgba(16, 185, 129, 0.15);
}

.icon-globe::before {
    content: '';
    position: absolute;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    border: 3px solid var(--accent-color);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.icon-globe::after {
    content: '';
    position: absolute;
    width: 45px;
    height: 3px;
    background: var(--accent-color);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Lock Icon */
.icon-lock {
    background: rgba(239, 68, 68, 0.15);
}

.icon-lock::before {
    content: '';
    position: absolute;
    width: 30px;
    height: 25px;
    background: #ef4444;
    border-radius: 4px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -30%);
}

.icon-lock::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid #ef4444;
    border-bottom: none;
    border-radius: 12px 12px 0 0;
    top: 30%;
    left: 50%;
    transform: translateX(-50%);
}

/* Chart Icon */
.icon-chart {
    background: rgba(139, 92, 246, 0.15);
}

.icon-chart::before {
    content: '';
    position: absolute;
    width: 8px;
    height: 25px;
    background: var(--secondary-color);
    bottom: 20%;
    left: 35%;
    border-radius: 2px 2px 0 0;
}

.icon-chart::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 35px;
    background: var(--primary-color);
    bottom: 20%;
    right: 35%;
    border-radius: 2px 2px 0 0;
}

/* Trophy Icon */
.icon-trophy {
    background: rgba(251, 191, 36, 0.15);
}

.icon-trophy::before {
    content: '';
    position: absolute;
    width: 35px;
    height: 30px;
    border: 3px solid #f59e0b;
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    top: 30%;
    left: 50%;
    transform: translateX(-50%);
}

.icon-trophy::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 8px;
    background: #fbbf24;
    border-radius: 4px;
    bottom: 30%;
    left: 50%;
    transform: translateX(-50%);
}

/* Refresh/Arrow Icon */
.icon-refresh {
    background: rgba(37, 99, 235, 0.15);
}

.icon-refresh::before {
    content: '';
    position: absolute;
    width: 30px;
    height: 30px;
    border: 3px solid var(--primary-color);
    border-top-color: transparent;
    border-right-color: transparent;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-45deg);
}

.icon-refresh::after {
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    border-left: 6px solid var(--primary-color);
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    top: 25%;
    right: 30%;
    transform: rotate(45deg);
}

/* Briefcase Icon */
.icon-briefcase {
    background: rgba(37, 99, 235, 0.15);
}

.icon-briefcase::before {
    content: '';
    position: absolute;
    width: 40px;
    height: 30px;
    background: var(--primary-color);
    border-radius: 4px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.icon-briefcase::after {
    content: '';
    position: absolute;
    width: 30px;
    height: 4px;
    background: var(--primary-light);
    border-radius: 2px;
    top: 40%;
    left: 50%;
    transform: translateX(-50%);
}

/* Microscope Icon */
.icon-microscope {
    background: rgba(16, 185, 129, 0.15);
}

.icon-microscope::before {
    content: '';
    position: absolute;
    width: 35px;
    height: 35px;
    border: 3px solid var(--accent-color);
    border-radius: 50%;
    top: 30%;
    left: 50%;
    transform: translateX(-50%);
}

.icon-microscope::after {
    content: '';
    position: absolute;
    width: 3px;
    height: 20px;
    background: var(--accent-color);
    bottom: 25%;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-color);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
    font-size: 1rem;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    padding: 4rem 0;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.contact-details {
    margin-top: 2rem;
}

.contact-details p {
    margin-bottom: 0.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
}

/* Footer */
footer {
    padding: 5rem 0 2rem;
    background-color: #0d1b2a;
    color: white;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-info .logo {
    color: white;
    margin-bottom: 1.5rem;
}

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    opacity: 0.7;
}

.footer-links a:hover {
    opacity: 1;
    color: white;
}

.footer-contact p {
    opacity: 0.7;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.6;
}

/* Mobile Menu */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    border-radius: 3px;
}

/* SEO Content Section */
.seo-content {
    padding: 6rem 0;
    background: var(--bg-white);
}

.seo-content article {
    max-width: 900px;
    margin: 0 auto;
}

.seo-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    margin-bottom: 1.5rem;
    font-weight: 800;
    color: var(--text-color);
}

.seo-content h3 {
    font-size: clamp(1.5rem, 2.5vw, 1.875rem);
    margin: 2.5rem 0 1rem;
    font-weight: 700;
    color: var(--text-color);
}

.seo-content p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    line-height: 1.8;
    font-size: 1.0625rem;
}

.seo-content a {
    color: var(--primary-color);
    text-decoration: underline;
    font-weight: 600;
}

.seo-content a:hover {
    color: var(--primary-hover);
}

/* Partners */
.partners {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
    background: var(--bg-light);
}

.section-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: #999;
    letter-spacing: 2px;
    margin-bottom: 2.5rem;
}

.partner-logos {
    display: flex;
    justify-content: space-between;
    align-items: center;
    opacity: 0.5;
    filter: grayscale(1);
    font-weight: 700;
}

/* Responsive */
@media (max-width: 992px) {
    .about-grid, .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .stats { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 640px) {
    .grid-3 { grid-template-columns: 1fr; }
    .stats { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .menu-toggle {
        display: flex;
    }
    .hero-ctas {
        flex-direction: column;
    }
}