/* 全局样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Open Sans', sans-serif;
        background: linear-gradient(135deg, #0B0C1E, #1F2937);
        color: #C5C6C7;
        overflow-x: hidden;
    }

    a {
        color: #64FFDA;
        text-decoration: none;
        position: relative;
    }

    a::after {
        content: '';
        position: absolute;
        width: 100%;
        transform: scaleX(0);
        height: 2px;
        bottom: -2px;
        left: 0;
        background-color: #64FFDA;
        transform-origin: bottom right;
        transition: transform 0.25s ease-out;
    }

    a:hover::after {
        transform: scaleX(1);
        transform-origin: bottom left;
    }

    /* 导航栏 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(11, 12, 30, 0.8);
        padding: 20px 50px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 1000;
        transition: background 0.3s ease;
    }

    .navbar.scrolled {
        background: rgba(11, 12, 30, 1);
    }

    .navbar a {
        color: #C5C6C7;
        margin-left: 20px;
        font-weight: 600;
    }

    /* 头部 */
    .hero {
        height: 100vh;
        background: url('https://images.gptkong.com/demo/sample1.png') center center/cover no-repeat;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(11, 12, 30, 0.7);
        z-index: 1;
    }

    .hero-content {
        position: relative;
        z-index: 2;
    }

    .hero h1 {
        font-size: 3rem;
        color: #64FFDA;
        margin-bottom: 20px;
        animation: fadeInDown 1s ease-out;
    }

    .hero p {
        font-size: 1.2rem;
        color: #C5C6C7;
        max-width: 600px;
        margin: 0 auto 30px;
        animation: fadeInUp 1s ease-out;
    }

    .cta-button {
        padding: 15px 30px;
        background: #64FFDA;
        color: #0B0C1E;
        border: none;
        border-radius: 25px;
        font-size: 1rem;
        cursor: pointer;
        transition: background 0.3s ease, transform 0.3s ease;
    }

    .cta-button:hover {
        background: #52E0C4;
        transform: scale(1.05);
    }

    /* 内容部分 */
    .section {
        padding: 80px 50px;
        background: linear-gradient(135deg, #1F2937, #0B0C1E);
        position: relative;
    }

    .section:nth-child(even) {
        background: linear-gradient(135deg, #0B0C1E, #1F2937);
    }

    .section h2 {
        text-align: center;
        color: #F2F3F4;
        margin-bottom: 40px;
        font-size: 2.5rem;
        position: relative;
    }

    .section h2::after {
        content: '';
        width: 100px;
        height: 3px;
        background: #64FFDA;
        display: block;
        margin: 10px auto 0;
    }

    .cards {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 30px;
    }

    .card {
        background: rgba(255, 255, 255, 0.05);
        padding: 20px;
        border-radius: 15px;
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        backdrop-filter: blur(5px);
        transition: transform 0.3s ease, background 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        background: rgba(100, 255, 218, 0.2);
    }

    .card img {
        width: 100%;
        height: auto;
        border-radius: 10px;
        margin-bottom: 15px;
    }

    .card h3 {
        color: #64FFDA;
        margin-bottom: 10px;
        font-size: 1.5rem;
    }

    .card p {
        color: #C5C6C7;
        font-size: 1rem;
        line-height: 1.5;
    }

    /* 示例数据展示 */
    .sample-data {
        padding: 80px 50px;
        background: linear-gradient(135deg, #0D1117, #1F2937);
    }

    .sample-data h2 {
        text-align: center;
        color: #F2F3F4;
        margin-bottom: 40px;
        font-size: 2.5rem;
    }

    .sample-data .sample-article {
        background: rgba(255, 255, 255, 0.05);
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        backdrop-filter: blur(5px);
        color: #C5C6C7;
    }

    .sample-data .sample-article h2 {
        color: #64FFDA;
        margin-bottom: 20px;
    }

    .sample-data .sample-article h3 {
        color: #F2F3F4;
        margin-top: 20px;
        margin-bottom: 10px;
    }

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

    .sample-data .sample-article pre {
        background: #0B0C1E;
        padding: 15px;
        border-radius: 10px;
        overflow: auto;
        margin-bottom: 15px;
    }

    .sample-data .sample-article code {
        color: #64FFDA;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 底部 */
    .footer {
        padding: 30px 50px;
        background: rgba(11, 12, 30, 0.9);
        text-align: center;
        color: #C5C6C7;
    }

    /* 提示信息 */
    .reference-note {
        position: fixed;
        bottom: 10px;
        right: 10px;
        background: rgba(11, 12, 30, 0.8);
        color: #64FFDA;
        padding: 10px 20px;
        border-radius: 20px;
        font-size: 0.9rem;
    }

    /* 动画 */
    @keyframes fadeInDown {
        from {
            opacity: 0;
            transform: translateY(-50px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(50px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* 响应式设计 */
    @media (max-width: 768px) {
        .navbar {
            padding: 15px 30px;
        }

        .hero h1 {
            font-size: 2.5rem;
        }

        .hero p {
            font-size: 1rem;
            padding: 0 20px;
        }

        .section {
            padding: 60px 20px;
        }

        .sample-data {
            padding: 60px 20px;
        }

        .footer {
            padding: 20px 30px;
            font-size: 0.9rem;
        }

        .cta-button {
            padding: 10px 20px;
            font-size: 0.9rem;
        }
    }

    @media (max-width: 480px) {
        .navbar a {
            margin-left: 10px;
            font-size: 0.9rem;
        }

        .hero h1 {
            font-size: 2rem;
        }

        .hero p {
            font-size: 0.9rem;
        }

        .section h2 {
            font-size: 2rem;
        }

        .card h3 {
            font-size: 1.2rem;
        }

        .card p {
            font-size: 0.9rem;
        }

        .footer {
            font-size: 0.8rem;
        }

        .cta-button {
            padding: 8px 16px;
            font-size: 0.8rem;
        }
    }

    @media (min-width: 1440px) {
        .hero h1 {
            font-size: 4rem;
        }

        .section h2 {
            font-size: 3rem;
        }
    }

    /* 粒子效果 */
    .particles {
        position: absolute;
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;
        pointer-events: none;
        overflow: hidden;
    }

    .particle {
        position: absolute;
        width: 5px;
        height: 5px;
        background: #64FFDA;
        border-radius: 50%;
        opacity: 0.8;
        animation: twinkle 5s infinite alternate;
    }

    @keyframes twinkle {
        from {
            transform: scale(0.5);
            opacity: 0.5;
        }
        to {
            transform: scale(1.5);
            opacity: 1;
        }
    }