* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Arial, sans-serif;
}

body {
    color: #1f2937;
    background: #ffffff;
    line-height: 1.6;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 40px;
    border-bottom: 1px solid #e5e7eb;
}

.logo {
    font-weight: 700;
    letter-spacing: 1px;
}

nav a {
    margin-left: 24px;
    text-decoration: none;
    color: #374151;
    font-weight: 500;
}

.btn-login {
    padding: 8px 18px;
    border: 1px solid #2563eb;
    color: #2563eb;
    border-radius: 6px;
}

.btn-login:hover {
    background: #2563eb;
    color: white;
}

.hero {
    padding: 90px 20px;
    text-align: center;
    background: linear-gradient(135deg, #f9fafb, #eef2ff);
}

.hero h1 {
    font-size: 36px;
    margin-bottom: 12px;
}

.hero p {
    max-width: 640px;
    margin: auto;
    color: #4b5563;
}

.section {
    padding: 70px 20px;
    max-width: 900px;
    margin: auto;
}

.section h2 {
    font-size: 26px;
    margin-bottom: 20px;
}

.section.gray {
    background: #f9fafb;
}

.faq-item {
    margin-bottom: 18px;
}

.faq-item h4 {
    margin-bottom: 6px;
}

.footer {
    text-align: center;
    padding: 30px;
    font-size: 14px;
    color: #6b7280;
    border-top: 1px solid #e5e7eb;
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 12px;
    }

    nav a {
        margin-left: 12px;
    }

    .hero h1 {
        font-size: 28px;
    }
}