body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #0a0a33, #2a0845, #4e0a58, #1a0a33);
    background-size: 200% 200%;
    animation: gradient-animation 15s ease infinite;
    color: #f0f0f0;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

@keyframes gradient-animation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

header {
    background: rgba(0, 0, 0, 0.5);
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

header h1 {
    font-size: 24px;
    margin: 0;
    font-weight: bold;
    letter-spacing: 1.5px;
    color: #ffffff;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.8);
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
}

nav ul li {
    margin-left: 25px;
}

nav ul li:first-child {
    margin-left: 0;
}

nav a {
    text-decoration: none;
    color: #d0d0d0;
    font-size: 16px;
    transition: color 0.3s ease;
    position: relative;
}

nav a:hover {
    color: #ffffff;
}

nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 0%;
    height: 2px;
    background-color: #ffffff;
    transition: width 0.3s ease;
}

nav a:hover::after {
    width: 100%;
}

.hero-section {
    position: relative;
    padding: 120px 30px;
    text-align: center;
    overflow: hidden;
}

.hero-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(5px);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h2 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #ffffff;
    letter-spacing: 2px;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.9);
}

.hero-content p {
    font-size: 18px;
    line-height: 1.6;
    color: #e0e0e0;
    margin-bottom: 30px;
    text-shadow: 0 0 3px rgba(0, 0, 0, 0.7);
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: #5a2da8;
    color: #ffffff;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

.btn:hover {
    background-color: #7b4397;
    transform: scale(1.05);
}

.features-section {
    padding: 80px 30px;
    text-align: center;
}

.features-section h2 {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 60px;
    color: #ffffff;
    letter-spacing: 1.5px;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.8);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    backdrop-filter: blur(8px);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.3);
}

.feature-card img {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 0 0 5px rgba(255, 255, 255, 0.1);
}

.feature-card h3 {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #ffffff;
}

.feature-card p {
    font-size: 16px;
    line-height: 1.5;
    color: #d0d0d0;
}

.example-article-section {
    padding: 80px 30px;
    background-color: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(5px);
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.2);
}

.example-article-section h2 {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 40px;
    color: #ffffff;
    text-align: center;
    letter-spacing: 1.5px;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.8);
}

.article-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    color: #e0e0e0;
    line-height: 1.7;
    font-size: 16px;
}

.article-content h3 {
    font-size: 24px;
    font-weight: bold;
    margin-top: 30px;
    margin-bottom: 15px;
    color: #ffffff;
}

.article-content p {
    margin-bottom: 20px;
}

.article-content ul, .article-content ol {
    margin-bottom: 20px;
    padding-left: 30px;
}

.article-content li {
    margin-bottom: 10px;
}

.article-content pre {
    background-color: rgba(0, 0, 0, 0.8);
    color: #f8f8f2;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.4;
    margin-bottom: 20px;
    tab-size: 4;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.article-content code {
    font-family: monospace, monospace;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.article-content th, .article-content td {
    border: 1px solid #444;
    padding: 8px;
    text-align: left;
}

.article-content th {
    font-weight: bold;
    background-color: rgba(0, 0, 0, 0.2);
}

footer {
    background: rgba(0, 0, 0, 0.5);
    text-align: center;
    padding: 20px 30px;
    color: #b0b0b0;
    margin-top: auto;
    backdrop-filter: blur(10px);
}

footer p {
    margin: 0;
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    header {
        padding: 15px 20px;
        flex-direction: column;
        align-items: flex-start;
    }
    header h1 {
        margin-bottom: 10px;
    }
    nav ul {
        flex-direction: column;
        align-items: flex-start;
    }
    nav ul li {
        margin-left: 0;
        margin-top: 15px;
    }
    .hero-section {
        padding: 80px 20px;
    }
    .hero-content h2 {
        font-size: 36px;
    }
    .hero-content p {
        font-size: 16px;
    }
    .features-section {
        padding: 60px 20px;
    }
    .features-section h2 {
        font-size: 30px;
        margin-bottom: 40px;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .feature-card {
        padding: 20px;
    }
    .feature-card img {
        width: 60px;
        height: 60px;
        margin-bottom: 15px;
    }
    .feature-card h3 {
        font-size: 20px;
    }
    .feature-card p {
        font-size: 15px;
    }
    .example-article-section {
        padding: 60px 20px;
    }
    .example-article-section h2 {
        font-size: 30px;
        margin-bottom: 30px;
    }
    .article-content {
        padding: 15px;
        font-size: 15px;
    }
    .article-content h3 {
        font-size: 22px;
    }
}

@media (max-width: 480px) {
    .hero-content h2 {
        font-size: 30px;
    }
    .hero-content p {
        font-size: 15px;
    }
    .features-section h2 {
        font-size: 28px;
    }
    .example-article-section h2 {
        font-size: 26px;
    }
}

@media (max-width: 320px) {
    .hero-content h2 {
        font-size: 26px;
    }
}