/* 全局样式 */
:root {
    --primary-color: #1E3A8A; /* 深蓝 */
    --secondary-color: #6366F1; /* 靛青 */
    --accent-color: #FFC75F; /* 紫粉 */
    --background-gradient: linear-gradient(135deg, #1E3A8A, #6366F1, #FFC75F);
    --font-family: 'Roboto', sans-serif;
    --text-color: #FFFFFF;
    --card-background: rgba(255, 255, 255, 0.1);
    --card-border-radius: 15px;
    --box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    --transition-speed: 0.3s;
}

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

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background: var(--background-gradient);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    animation: aurora-move 15s linear infinite;
}

header {
    width: 100%;
    text-align: center;
    padding: 20px 0;
}

header h1 {
    font-size: 2.5rem;
    color: var(--accent-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

main {
    width: 100%;
    max-width: 1200px;
    display: grid;
    grid-template-columns: 1fr 3fr;
    gap: 20px;
}

aside {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

aside img {
    width: 100%;
    border-radius: var(--card-border-radius);
    box-shadow: var(--box-shadow);
}

article {
    background: var(--card-background);
    backdrop-filter: blur(10px);
    border-radius: var(--card-border-radius);
    padding: 20px;
    box-shadow: var(--box-shadow);
}

article h2, article h3, article h4 {
    color: var(--accent-color);
    margin-bottom: 10px;
}

article p {
    margin-bottom: 15px;
    line-height: 1.6;
}

article pre {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 10px;
    overflow: auto;
    margin-bottom: 15px;
}

article code {
    font-family: 'Courier New', Courier, monospace;
    color: #FFD700;
}

button {
    background: var(--secondary-color);
    color: var(--text-color);
    border: none;
    padding: 10px 20px;
    border-radius: var(--card-border-radius);
    cursor: pointer;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

button:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px rgba(255, 199, 95, 0.7);
}

.footer {
    margin-top: 40px;
    text-align: center;
    color: #CCCCCC;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color var(--transition-speed);
}

a:hover {
    color: #FFD700;
}

/* 动画 */
@keyframes aurora-move {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 响应式设计 */
@media (max-width: 1440px) {
    main {
        max-width: 1000px;
    }
}

@media (max-width: 1200px) {
    main {
        max-width: 900px;
    }
}

@media (max-width: 1024px) {
    main {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    article {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    header h1 {
        font-size: 1.5rem;
    }

    button {
        padding: 8px 16px;
    }
}

@media (max-width: 320px) {
    article h2 {
        font-size: 1.5rem;
    }

    article h3 {
        font-size: 1.3rem;
    }

    article h4 {
        font-size: 1.1rem;
    }
}