body {
    margin: 0;
    padding: 0;
    background-color: #f8fafc;
}

.help-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    margin-top: 60px;
}

.help-header {
    text-align: center;
    margin-bottom: 50px;
}

.help-header h1 {
    font-size: 32px;
    color: #2c3e50;
    margin-bottom: 25px;
    font-weight: 500;
}

.help-container .search-box {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.help-container .search-box input {
    width: 100%;
    height: 40px;
    padding: 0 40px 0 15px;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    font-size: 14px;
    outline: none;
    transition: all 0.25s;
}

.help-container .search-box::after {
    content: '\f002';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    font-size: 14px;
}

.help-container .hot-search {
    text-align: center;
    margin-top: 12px;
    color: #666;
    font-size: 13px;
}

.help-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.help-card {
    padding: 25px;
    background: #ffffff;
    border: 1px solid #edf2f7;
    border-radius: 12px;
    transition: all 0.3s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

.help-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.help-card h2 {
    font-size: 20px;
    color: #1f2937;
    margin-bottom: 20px;
    font-weight: 500;
    display: flex;
    align-items: center;
}

/* 为不同卡片添加图标 */
.help-card.quick-start h2::before {
    content: '\f135';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-right: 10px;
    color: #3b82f6;
}

.help-card.function h2::before {
    content: '\f085';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-right: 10px;
    color: #10b981;
}

.help-card.guide h2::before {
    content: '\f05a';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-right: 10px;
    color: #8b5cf6;
}

.help-card.api h2::before {
    content: '\f1c9';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-right: 10px;
    color: #f59e0b;
}

.help-card.special h2::before {
    content: '\f02d';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-right: 10px;
    color: #ec4899;
}

.help-card.faq h2::before {
    content: '\f059';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-right: 10px;
    color: #6366f1;
}

.help-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.help-card li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
}

.help-card li::before {
    content: '\f054';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 12px;
    margin-right: 8px;
    color: #94a3b8;
}

.help-card li a {
    color: #4b5563;
    text-decoration: none;
    transition: color 0.2s;
    font-size: 15px;
}

.help-card li a:hover {
    color: #3b82f6;
}

.more-link {
    display: flex;
    align-items: center;
    margin-top: 20px;
    color: #3b82f6;
    text-decoration: none;
    font-size: 14px;
}

.more-link::after {
    content: '\f061';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-left: 6px;
    transition: transform 0.2s;
}

.more-link:hover::after {
    transform: translateX(3px);
}

@media (max-width: 768px) {
    .help-grid {
        grid-template-columns: 1fr;
    }
    
    .help-container .search-box {
        width: 90%;
    }
    
    .help-header h1 {
        font-size: 28px;
    }
}