* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    line-height: 1.6;
}

.help-page {
    max-width: 1300px;
    margin: 0 auto;
    padding: 20px;
}

/* Convenient Entry Section */
.convenient-entry {
    background: white;
    border-radius: 12px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    text-align: center;
    margin-bottom: 40px;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.service-card {
    background: white;
    border: 1px solid #e8e8e8;
    border-radius: 12px;
    padding: 30px 20px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

    .service-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 8px 20px rgba(0,0,0,0.12);
        border-color: #1890ff;
    }

.service-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #1890ff 0%, #40a9ff 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 24px;
}

.service-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.service-description {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.4;
}

/* Service and Support Section */
.service-support {
    background: white;
    border-radius: 12px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.support-item {
    text-align: center;
    padding: 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

    .support-item:hover {
        background: #f8f9fa;
    }

.support-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #1890ff 0%, #40a9ff 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    color: white;
    font-size: 20px;
}

.support-title {
    font-size: 1rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.support-detail {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 4px;
}

.support-description {
    font-size: 0.8rem;
    color: #999;
    line-height: 1.3;
}

/* Help Center Section */
.help-center {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    border-radius: 12px;
    padding: 60px 40px;
    margin-bottom: 30px;
    color: white;
    text-align: center;
}

.help-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 30px;
}

.search-container {
    max-width: 600px;
    margin: 0 auto 30px;
}

.search-box {
    display: flex;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.search-input {
    flex: 1;
    padding: 15px 20px;
    border: none;
    outline: none;
    font-size: 1rem;
    color: #333;
}

    .search-input::placeholder {
        color: #999;
    }

.search-button {
    padding: 15px 30px;
    background: #1890ff;
    color: white;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

    .search-button:hover {
        background: #40a9ff;
    }

.search-links {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.hot-searches {
    display: flex;
    align-items: center;
    gap: 10px;
}

    .hot-searches a {
        color: white;
        text-decoration: none;
        opacity: 0.9;
        transition: opacity 0.3s ease;
    }

        .hot-searches a:hover {
            opacity: 1;
            text-decoration: underline;
        }

.submit-ticket {
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.3s ease;
}

    .submit-ticket:hover {
        opacity: 0.8;
    }

/* FAQ Section */
.faq-section {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.faq-title {
    font-size: 2rem;
    font-weight: 700;
    color: #333;
    text-align: center;
    margin-bottom: 40px;
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.faq-column {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.faq-header {
    background: linear-gradient(135deg, #1890ff 0%, #40a9ff 100%);
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

    .faq-header.dark {
        background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    }

.faq-column-title {
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
}

.view-more {
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

    .view-more:hover {
        opacity: 1;
    }

.faq-content {
    padding: 20px;
}

.faq-list {
    list-style: none;
}

    .faq-list li {
        padding: 12px 0;
        border-bottom: 1px solid #f0f0f0;
        cursor: pointer;
        transition: color 0.3s ease;
    }

        .faq-list li:last-child {
            border-bottom: none;
        }

        .faq-list li:hover {
            color: #1890ff;
        }

        .faq-list li::before {
            content: "•";
            color: #1890ff;
            font-weight: bold;
            margin-right: 10px;
        }

/* Footer */
.footer {
    background: #1e3a8a;
    color: white;
    text-align: center;
    padding: 20px;
    border-radius: 8px;
    margin-top: 30px;
}

/* Responsive Design */
@media (max-width: 992px) {
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .support-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .faq-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .help-title {
        font-size: 2rem;
    }

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

    .search-links {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .help-page {
        padding: 10px;
    }

    .service-grid {
        grid-template-columns: 1fr;
    }

    .support-grid {
        grid-template-columns: 1fr;
    }

    .convenient-entry,
    .service-support,
    .help-center,
    .faq-section {
        padding: 20px;
    }

    .help-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}