:root {
    /* Color Palette - Guardian Blue */
    --primary-bg: #0a0e17;
    --secondary-bg: #111827;
    --accent-color: #00e5ff;
    --accent-glow: rgba(0, 229, 255, 0.4);
    --text-main: #e2e8f0;
    --text-dim: #94a3b8;
    --card-bg: #1e293b;
    --card-border: #334155;
    --nav-bg: rgba(10, 14, 23, 0.8);
    --transition-fast: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--primary-bg);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3 {
    font-weight: 700;
    letter-spacing: -0.025em;
}

.gradient-text {
    background: linear-gradient(90deg, #fff, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 2rem;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-color);
    text-shadow: 0 0 10px var(--accent-glow);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
}

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

/* Hero Section */
.hero {
    padding: 10rem 2rem 5rem;
    text-align: center;
    background: radial-gradient(circle at 50% 50%, #1e293b 0%, #0a0e17 70%);
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-dim);
    max-width: 800px;
    margin: 0 auto 2.5rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--accent-color);
    color: #000;
    font-weight: 700;
    border-radius: 50px;
    text-decoration: none;
    transition: var(--transition-fast);
    box-shadow: 0 0 20px var(--accent-glow);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 35px var(--accent-glow);
}

/* Pricing Section */
.pricing {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-header {
    text-align: center;
    margin-bottom: 4rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.price-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 2.5rem;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.price-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-color);
    background: #243147;
}

.price-card.featured {
    border-color: var(--accent-color);
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.1);
}

.tier-name {
    font-size: 1.25rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.price-amount span {
    font-size: 1rem;
    color: var(--text-dim);
}

.features-list {
    list-style: none;
    margin-bottom: 2rem;
}

.features-list li {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    color: var(--text-dim);
}

.features-list li::before {
    content: "✓";
    margin-right: 0.5rem;
    color: var(--accent-color);
}

/* Articles Section */
.articles {
    padding: 5rem 2rem;
    background: var(--secondary-bg);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.article-card {
    background: var(--primary-bg);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition-fast);
    border: 1px solid var(--card-border);
    text-decoration: none;
    color: inherit;
}

.article-card:hover {
    transform: scale(1.02);
    border-color: var(--accent-color);
}

.article-content {
    padding: 1.5rem;
}

.article-tag {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.article-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.article-excerpt {
    color: var(--text-dim);
    font-size: 0.9rem;
}

/* Footer */
footer {
    padding: 5rem 2rem;
    background: var(--primary-bg);
    border-top: 1px solid var(--card-border);
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-links a {
    color: var(--text-dim);
    text-decoration: none;
}

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

.copyright {
    color: var(--text-dim);
    font-size: 0.875rem;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate {
    animation: fadeIn 0.8s ease-out forwards;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero h1 { font-size: 2.5rem; }
    .pricing-grid { grid-template-columns: 1fr; }
}