:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg: #f8fafc;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --white: #ffffff;
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Layout */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 80px 0;
}

/* Header */
header {
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary);
    text-decoration: none;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 100px 0 60px;
}

h1 {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
}

.cta-button {
    display: inline-block;
    background-color: var(--primary);
    color: var(--white);
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.2s, background 0.2s;
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.3);
}

.cta-button:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
}

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 40px;
}

.feature-card {
    background: var(--white);
    padding: 40px;
    border-radius: 24px;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 20px;
    display: block;
}

.feature-card h3 {
    margin-bottom: 16px;
    font-size: 1.5rem;
}

.feature-card p {
    color: var(--text-muted);
}

/* PWA Info Section */
.pwa-info {
    background: #eff6ff;
    border-radius: 32px;
    padding: 60px 40px;
    text-align: center;
    margin: 40px 0;
}

.pwa-info h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid #e2e8f0;
}

/* Responsive */
@media (max-width: 768px) {
    section { padding: 60px 0; }
    .hero { padding: 60px 0 40px; }
}