body {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Sans GB', 'WenQuanYi Micro Hei', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
}

header p {
    font-size: 1.2rem;
}

main {
    padding: 20px;
    max-width: 1200px;
    margin: 20px auto;
    background: #fff;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

section {
    margin-bottom: 2rem;
}

h2 {
    color: #333;
    border-bottom: 2px solid #333;
    padding-bottom: 10px;
    margin-bottom: 1rem;
}

.feature-module {
    margin-bottom: 2rem;
    padding-left: 20px;
}

.feature-module h3 {
    color: #555;
    font-size: 1.5rem;
}

ul {
    list-style: none;
    padding: 0;
}

ul li {
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
    padding-left: 1.5rem;
    position: relative;
}

ul li::before {
    content: '✓';
    color: #28a745;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.process-flow {
    list-style: none;
    counter-reset: step;
    padding: 0;
    margin-left: 20px;
}

.process-flow li {
    counter-increment: step;
    margin-bottom: 1rem;
    position: relative;
    padding-left: 45px;
}

.process-flow li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: -2px;
    width: 30px;
    height: 30px;
    background-color: #333;
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
}

.process-flow li::after {
    content: '';
    position: absolute;
    left: 14px;
    top: 30px;
    bottom: -1rem;
    width: 2px;
    background-color: #ccc;
    z-index: -1;
}

.process-flow li:last-child::after {
    display: none;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.data-table th, .data-table td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}

.data-table th {
    background-color: #f2f2f2;
    font-weight: bold;
    color: #333;
}

.data-table tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}

.data-table tbody tr:hover {
    background-color: #f1f1f1;
}

footer {
    text-align: center;
    padding: 1rem 0;
    background: #333;
    color: #fff;
    position: relative;
    bottom: 0;
    width: 100%;
}