:root {
    --primary-color: #1a237e;
    --secondary-color: #283593;
    --accent-color: #ff8f00;
    --text-color: #e8eaf6;
    --bg-gradient: linear-gradient(135deg, #1a237e 0%, #283593 70%, #3949ab 100%);
    --card-bg: rgba(255, 255, 255, 0.1);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    background: var(--bg-gradient);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100%;
    padding: 0;
    margin: 0;
    overflow-x: hidden;
}

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

.header {
    text-align: center;
    padding: 40px 0;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.gptkong.com/demo/sample1.png') center/cover no-repeat;
    opacity: 0.1;
    z-index: -1;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    position: relative;
    display: inline-block;
}

.header h1::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: var(--accent-color);
    border-radius: 3px;
}

.notice {
    background: rgba(255, 255, 255, 0.2);
    padding: 15px;
    border-radius: var(--border-radius);
    margin: 20px 0;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.article-container {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--border-radius);
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

article h2 {
    color: var(--accent-color);
    margin: 30px 0 15px;
    font-size: 1.8rem;
    position: relative;
    padding-bottom: 10px;
}

article h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--accent-color);
}

article h3 {
    margin: 25px 0 15px;
    font-size: 1.4rem;
    color: #bbdefb;
}

article p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

color {
    color: var(--accent-color);
    font-weight: bold;
}

span {
    color: #bbdefb;
    font-weight: 500;
}

pre {
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--border-radius);
    padding: 20px;
    margin: 20px 0;
    overflow: auto;
    border-left: 4px solid var(--accent-color);
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.5;
    box-shadow: var(--shadow);
}

code {
    color: #ffcc80;
    font-family: 'Courier New', monospace;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.image-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.image-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.image-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.image-caption {
    padding: 15px;
    text-align: center;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

th {
    background: rgba(0, 0, 0, 0.3);
    color: var(--accent-color);
    font-weight: 500;
}

tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

.tabs-container {
    margin: 40px 0;
}

.tabs {
    display: flex;
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
    margin-bottom: 20px;
}

.tab {
    padding: 15px 25px;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
    font-weight: 500;
}

.tab:hover {
    color: var(--accent-color);
}

.tab.active {
    color: var(--accent-color);
}

.tab.active::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-color);
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: float 15s infinite linear;
}

@keyframes float {
    0% { transform: translateY(0) translateX(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-100vh) translateX(100px); opacity: 0; }
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }
    
    article h2 {
        font-size: 1.5rem;
    }
    
    article h3 {
        font-size: 1.2rem;
    }
    
    .image-grid {
        grid-template-columns: 1fr;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .tab {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 15px;
    }
    
    .article-container {
        padding: 20px;
    }
    
    pre {
        padding: 15px;
        font-size: 0.85rem;
    }
}