/* 基础样式与全局设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Open Sans', sans-serif;
    background: linear-gradient(135deg, #121212, #1e1e1e);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: 'Roboto', sans-serif;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
}

h1 {
    font-size: 48px;
    text-align: center;
    margin: 40px 0;
    background: linear-gradient(90deg, #2196F3, #673AB7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: 36px;
    margin: 30px 0;
    color: #FFC107;
}

h3 {
    font-size: 28px;
    margin: 20px 0;
    color: #FF9800;
}

p {
    font-size: 18px;
    margin: 15px 0;
    color: #e0e0e0;
}

a {
    color: #2196F3;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #1E88E5;
}

pre {
    background: rgba(0, 0, 0, 0.7);
    padding: 20px;
    border-radius: 10px;
    overflow-x: auto;
    margin: 20px 0;
}

code {
    color: #FFEB3B;
    font-family: 'Courier New', Courier, monospace;
    font-size: 16px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
}

th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

th {
    background: rgba(0, 0, 0, 0.5);
    color: #FFC107;
}

td {
    color: #ffffff;
}

button {
    background: linear-gradient(90deg, #2196F3, #673AB7);
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 18px;
    transition: background 0.3s ease;
}

button:hover {
    background: linear-gradient(90deg, #1E88E5, #5E35B1);
}

.fullscreen-section {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    width: 100%;
    background-size: cover;
    background-position: center;
    position: relative;
}

.section-1 {
    background: linear-gradient(135deg, #2196F3, #673AB7);
}

.section-2 {
    background: linear-gradient(135deg, #FFC107, #FF9800);
}

.section-3 {
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
}

.section-4 {
    background: linear-gradient(135deg, #E91E63, #9C27B0);
}

.data-line {
    position: absolute;
    width: 100%;
    height: 2px;
    background: #ffffff;
    animation: dataFlow 5s infinite linear;
}

@keyframes dataFlow {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@media (max-width: 768px) {
    h1 {
        font-size: 36px;
    }

    h2 {
        font-size: 28px;
    }

    h3 {
        font-size: 24px;
    }

    p {
        font-size: 16px;
    }

    .fullscreen-section {
        height: auto;
        padding: 60px 20px;
    }
}