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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: #333;
    min-height: 100vh;
}

/* Header */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 0px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    height: 40px;
    width: auto;
}

.brand-name {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: 1px;
}

/* Navigation Tabs */
nav {
    display: flex;
    gap: 0;
}

nav a {
    color: white;
    text-decoration: none;
    padding: 15px 25px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    border-bottom: 3px solid transparent;
}

nav a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-bottom-color: #00d4ff;
}

nav a.active {
    background-color: rgba(255, 255, 255, 0.2);
    border-bottom-color: #00d4ff;
}

/* Main Container */
.container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    background: white;
    border-radius: 10px;
    padding: 60px 40px;
    text-align: center;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    margin-bottom: 40px;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.6;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 15px 40px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

/* Features Grid */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.feature-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border-left: 4px solid #667eea;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: #667eea;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* Tab Content */
.tab-content {
    background: white;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tab-content h2 {
    color: #667eea;
    margin-bottom: 20px;
    font-size: 32px;
}

.tab-content p {
    color: #666;
    line-height: 1.8;
    font-size: 16px;
}

/* Footer */
footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 10px 10px;
    margin-top: 60px;
}

footer p {
    margin: 10px 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 20px;
    }

    nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    nav a {
        padding: 10px 15px;
        font-size: 14px;
    }

    .hero {
        padding: 40px 20px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero p {
        font-size: 16px;
    }

    .features {
        grid-template-columns: 1fr;
    }
}