:root {
    --bg-color: #f1f5f9;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --accent: #64748b;
    --accent-hover: #475569;
    --border-color: #cbd5e1;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #f8fafc 0%, #cbd5e1 50%, #f8fafc 100%);
    background-attachment: fixed;
    color: var(--text-main);
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.navbar {
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(10px);
}

.logo {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(90deg, #60a5fa, #3b82f6);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 30px;
}

.hero {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 15px;
    font-weight: 700;
}

.hero p {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 30px;
    line-height: 1.6;
}

.btn-launch {
    padding: 16px 32px;
    background-color: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(100, 116, 139, 0.4);
}

.btn-launch:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(100, 116, 139, 0.6);
}

.features {
    padding: 60px 20px;
    background-color: #0b1120;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.feature-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
}

.feature-card h3 {
    margin-top: 0;
    font-size: 20px;
    color: var(--text-main);
}

.feature-card p {
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 0;
}

footer {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
    font-size: 14px;
    border-top: 1px solid var(--border-color);
}