body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(to bottom, #0a1128, #1e2747, #333a5f);
    color: #ffffff;
    overflow-x: hidden;
    line-height: 1.7;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: bold;
    color: #e0f7fa;
    margin-top: 1.5em;
    margin-bottom: 0.75em;
    line-height: 1.3;
}

h2 {
    font-size: 2.2em;
}

h3 {
    font-size: 1.8em;
}

p {
    color: #d0d0d0;
    margin-bottom: 1em;
}

a {
    color: #00bcd4;
    text-decoration: none;
}

a:hover {
    color: #4dd0e1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.hero-section {
    background: linear-gradient(to right, rgba(10, 17, 40, 0.9), rgba(30, 39, 71, 0.7)), url(https://images.gptkong.com/demo/sample1.png);
    background-size: cover;
    background-position: center;
    padding: 100px 20px;
    text-align: center;
    border-radius: 12px;
    margin-bottom: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
}

.hero-section h1 {
    font-size: 3.5em;
    margin-bottom: 20px;
    text-shadow: 2px 2px 3px rgba(0, 0, 0, 0.8);
}

.hero-section p {
    font-size: 1.2em;
    color: #f0f0f0;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(to right, #00bcd4, #4dd0e1);
    color: #0a1128;
    font-size: 1.1em;
    border-radius: 6px;
    transition: background-color 0.3s ease;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.3);
}

.btn:hover {
    background: linear-gradient(to right, #4dd0e1, #80deea);
    color: #0a1128;
}

.features-section, .advantages-section, .cases-section, .community-section, .contact-section, .example-article-section {
    padding: 40px 20px;
    margin-bottom: 30px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
}

.features-grid, .advantages-list, .cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-item, .advantage-item, .case-item {
    padding: 25px;
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover, .advantage-item:hover, .case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.feature-item img, .case-item img {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    padding: 10px;
}

.feature-item h3, .case-item h3, .advantage-item h3 {
    margin-bottom: 15px;
    font-size: 1.5em;
}

.advantages-list ul {
    list-style: none;
    padding: 0;
}

.advantages-list li {
    margin-bottom: 15px;
    padding-left: 25px;
    position: relative;
}

.advantages-list li:before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: #00bcd4;
    font-size: 1.2em;
}

.community-section .community-content {
    text-align: center;
}

.contact-form {
    display: grid;
    gap: 20px;
}

.contact-form input, .contact-form textarea {
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    background-color: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    font-size: 1em;
}

.contact-form textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-form button {
    padding: 15px 30px;
    border: none;
    border-radius: 6px;
    background: linear-gradient(to right, #00bcd4, #4dd0e1);
    color: #0a1128;
    font-size: 1.1em;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.contact-form button:hover {
    background: linear-gradient(to right, #4dd0e1, #80deea);
    color: #0a1128;
}

.example-article-section article {
    background-color: rgba(255, 255, 255, 0.08);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
}

.example-article-section pre {
    background-color: rgba(0, 0, 0, 0.8);
    color: #f8f8f2;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 0.9em;
    tab-size: 4;
    -moz-tab-size: 4;
    -o-tab-size: 4;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.example-article-section code {
    font-family: 'Courier New', monospace;
}

.footer {
    text-align: center;
    padding: 30px 20px;
    color: #b0bec5;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.8em;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 2px 2px 3px rgba(0, 0, 0, 0.7);
}

.section-title p {
    font-size: 1.1em;
    color: #c0c0c0;
}

@media (max-width: 768px) {
    .hero-section {
        padding: 80px 20px;
    }

    .hero-section h1 {
        font-size: 2.8em;
    }

    .hero-section p {
        font-size: 1em;
    }

    .features-grid, .advantages-list, .cases-grid {
        grid-template-columns: 1fr;
    }

    .section-title h2 {
        font-size: 2.4em;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: 60px 20px;
    }

    .hero-section h1 {
        font-size: 2.2em;
    }

    .section-title h2 {
        font-size: 2em;
    }
}