/* 基础重置 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0072ff, #8e44ad, #2ecc71);
        background-size: 400% 400%;
        animation: gradientAnimation 15s ease infinite;
        color: #ffffff;
        line-height: 1.6;
        padding: 20px;
    }

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

    h1, h2, h3, h4 {
        font-family: 'Montserrat', sans-serif;
        color: #ffffff;
        margin-bottom: 20px;
    }

    h1 {
        font-size: 2.5em;
        text-align: center;
        margin-top: 40px;
    }

    h2 {
        font-size: 2em;
        margin-top: 40px;
    }

    h3 {
        font-size: 1.75em;
        margin-top: 30px;
    }

    h4 {
        font-size: 1.5em;
        margin-top: 25px;
    }

    p {
        font-size: 1em;
        margin-bottom: 20px;
        color: #d6d6d6;
    }

    pre {
        background: rgba(255, 255, 255, 0.1);
        padding: 15px;
        border-radius: 8px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #ff9a00;
    }

    ul, table {
        margin-bottom: 20px;
    }

    ul li {
        margin-bottom: 10px;
        list-style: disc inside;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        background: rgba(255, 255, 255, 0.1);
    }

    table th, table td {
        border: 1px solid #ffffff;
        padding: 10px;
        text-align: left;
    }

    table th {
        background: rgba(142, 68, 173, 0.8);
    }

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

    .flex-container {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .flex-item {
        flex: 1 1 calc(33.333% - 20px);
        margin: 10px;
        background-color: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        padding: 20px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }

    .shape {
        width: 100px;
        height: 100px;
        background-color: #ff9a00;
        clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
        animation: shapeRotate 5s linear infinite;
        margin: 20px auto;
    }

    @keyframes shapeRotate {
        from {transform: rotate(0deg);}
        to {transform: rotate(360deg);}
    }

    button {
        position: relative;
        overflow: hidden;
        padding: 10px 20px;
        background-color: #ff9a00;
        border: none;
        border-radius: 5px;
        color: #ffffff;
        cursor: pointer;
        transition: transform 0.3s ease;
    }

    button::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        background-color: rgba(255, 255, 255, 0.5);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        opacity: 0;
        transition: all 0.5s ease;
    }

    button:hover::before {
        width: 150px;
        height: 150px;
        opacity: 1;
    }

    button:hover {
        transform: scale(1.05);
    }

    a {
        color: #ffffff;
        text-decoration: none;
    }

    a:hover {
        color: #ff9a00;
        transition: color 0.3s ease;
    }

    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 20px;
    }

    .image-gallery img {
        width: 100%;
        max-width: 320px;
        border-radius: 8px;
    }

    .reference-note {
        text-align: center;
        font-size: 1em;
        margin-top: 40px;
        color: #d6d6d6;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        h1 {
            font-size: 2.3em;
        }

        .flex-item {
            flex: 1 1 calc(33.333% - 20px);
        }
    }

    @media (max-width: 1200px) {
        h1 {
            font-size: 2em;
        }

        .flex-item {
            flex: 1 1 calc(50% - 20px);
        }
    }

    @media (max-width: 1024px) {
        .flex-item {
            flex: 1 1 100%;
        }
    }

    @media (max-width: 768px) {
        h1 {
            font-size: 1.8em;
        }

        h2 {
            font-size: 1.75em;
        }

        h3 {
            font-size: 1.5em;
        }

        .shape {
            width: 80px;
            height: 80px;
        }
    }

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

        h1 {
            font-size: 1.5em;
        }

        h2 {
            font-size: 1.5em;
        }

        h3 {
            font-size: 1.25em;
        }

        .flex-container {
            flex-direction: column;
        }

        .image-gallery {
            flex-direction: column;
        }
    }

    @media (max-width: 320px) {
        h1 {
            font-size: 1.3em;
        }

        h2 {
            font-size: 1.3em;
        }

        h3 {
            font-size: 1.1em;
        }
    }