:root {
    --primary-color: #0071e3;
    --secondary-color: #00bfff;
    --text-color: #1d1d1f;
    --bg-color: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(255, 255, 255, 0.3);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    background-color: #f5f5f7;
    line-height: 1.5;
}

header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

nav {
    max-width: 980px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    margin-left: 1.5rem;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--primary-color);
}

.hero {
    padding: 80px 20px;
    text-align: center;
    background: linear-gradient(135deg, #f5f5f7 0%, #e8e8ed 100%);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.5rem;
    color: #86868b;
    max-width: 700px;
    margin: 0 auto 2rem;
}

.cta-button {
    background: var(--primary-color);
    color: white;
    padding: 12px 24px;
    border-radius: 980px;
    text-decoration: none;
    font-size: 1.1rem;
    transition: background 0.3s;
}

.cta-button:hover {
    background: #0077ed;
}

.section {
    max-width: 980px;
    margin: 60px auto;
    padding: 0 20px;
}

.card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--glass-border);
    margin-bottom: 30px;
}

footer {
    text-align: center;
    padding: 40px;
    color: #86868b;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .hero p { font-size: 1.2rem; }
}