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

body {
    font-family: 'Roboto', sans-serif;
    background-color: #1a1a1a;
    color: #fff;
}

/* Header */
.navbar {
    background-color: #222;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo a {
    font-size: 1.8rem;
    font-weight: bold;
    color: #00bfff;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-menu li {
    margin-left: 2rem;
}

.nav-menu a {
    color: #ddd;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: #00bfff;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://via.placeholder.com/1920x1080/222/000') no-repeat center center/cover;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #ccc;
}

.cta-btn {
    background-color: #00bfff;
    color: #000;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    transition: background 0.3s;
}

.cta-btn:hover {
    background-color: #00a8e6;
}

/* Features */
.features {
    padding: 5rem 0;
    background-color: #121212;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: #222;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-card i {
    font-size: 3rem;
    color: #00bfff;
    margin-bottom: 1rem;
}

/* Protocols */
.protocols {
    padding: 5rem 0;
    background-color: #1a1a1a;
}

.protocol-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.protocol-card {
    background-color: #222;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
}

.protocol-card img {
    width: 80px;
    height: 80px;
    margin-bottom: 1rem;
}

/* Pricing */
.pricing {
    padding: 5rem 0;
    background-color: #121212;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.pricing-card {
    background-color: #222;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
}

.pricing-card .price {
    font-size: 2.5rem;
    margin: 1rem 0;
    color: #00bfff;
}

.pricing-card ul {
    list-style: none;
    margin: 1.5rem 0;
}

.pricing-card ul li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #333;
}

/* Footer */
footer {
    background-color: #0d0d0d;
    padding-top: 3rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 0 2rem;
}

.footer-section h3, .footer-section h4 {
    margin-bottom: 1rem;
    color: #00bfff;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ddd;
    text-decoration: none;
}

.footer-section a:hover {
    color: #00bfff;
}

.social-icons a {
    color: #ddd;
    font-size: 1.5rem;
    margin-right: 1rem;
}

.social-icons a:hover {
    color: #00bfff;
}

.footer-bottom {
    text-align: center;
    padding: 2rem 0 1rem;
    border-top: 1px solid #333;
    margin-top: 2rem;
    color: #aaa;
}