/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --apple-blue: #0071e3;
    --apple-gray: #86868b;
    --apple-dark: #1d1d1f;
    --apple-light: #f5f5f7;
    --apple-white: #ffffff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.47059;
    color: var(--apple-dark);
    background-color: var(--apple-white);
}

/* Typography */
h1 {
    font-size: 56px;
    font-weight: 600;
    letter-spacing: -0.003em;
}

h2 {
    font-size: 40px;
    font-weight: 600;
    letter-spacing: -0.003em;
}

h3 {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.003em;
}

p {
    font-size: 17px;
    line-height: 1.47059;
    color: var(--apple-gray);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.hero {
    background: #000;
    color: white;
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-subtitle {
    font-size: 27px;
    font-weight: 400;
    margin: 20px 0;
}

/* Navigation */
.nav {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    height: 44px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--apple-gray);
    text-decoration: none;
    font-size: 12px;
    transition: color 0.3s ease;
}

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

/* Features Section */
.features {
    padding: 100px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-card {
    background: var(--apple-light);
    border-radius: 18px;
    padding: 40px;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: scale(1.02);
}

/* Buttons */
.cta-button {
    display: inline-block;
    background: var(--apple-blue);
    color: white;
    padding: 18px 31px;
    border-radius: 980px;
    text-decoration: none;
    font-size: 17px;
    font-weight: 400;
    transition: background 0.3s ease;
}

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

/* Compatibility Section */
.compatibility {
    background: var(--apple-light);
    padding: 100px 0;
    text-align: center;
}

.compatibility-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

/* Footer */
.footer {
    background: var(--apple-light);
    padding: 40px 0;
    color: var(--apple-gray);
    font-size: 12px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h4 {
    color: var(--apple-dark);
    margin-bottom: 15px;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: var(--apple-gray);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--apple-dark);
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 40px;
    }
    
    h2 {
        font-size: 32px;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}