.help-hero {
    padding: 160px 0 80px;
    background: var(--gradient-primary);
    text-align: center;
    color: white;
}

.help-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.help-content {
    padding: 60px 0;
}

.help-content .container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 3rem;
}

.help-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.help-nav {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.help-nav-link {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    margin-bottom: 0.25rem;
}

.help-nav-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.help-nav-link.active {
    background: var(--primary-color);
    color: white;
}

.help-section {
    margin-bottom: 3rem;
    scroll-margin-top: 100px;
}

.help-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--primary-color);
}

.help-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    border: 1px solid var(--border-color);
}

.help-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.btn-help {
    display: inline-block;
    padding: 0.625rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-help:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.4);
}

.faq-item {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background: var(--bg-tertiary);
}

.faq-question i {
    color: var(--primary-color);
    font-size: 0.75rem;
    transition: transform var(--transition-fast);
}

.faq-item.active .faq-question i {
    transform: rotate(90deg);
}

.faq-question span {
    font-weight: 500;
    color: var(--text-primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 1.5rem 1.25rem 2.5rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.help-links {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem 1.5rem;
}

.help-links li {
    margin-bottom: 0;
}

.help-links a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.help-links a::before {
    content: '→';
    color: var(--primary-color);
    font-size: 0.875rem;
    transition: transform var(--transition-fast);
}

.help-links a:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
    text-decoration: none;
    transform: translateX(4px);
}

.help-links a:hover::before {
    transform: translateX(4px);
}

@media (max-width: 768px) {
    .help-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.625rem 1rem;
    }

    .help-links a {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .help-links {
        grid-template-columns: 1fr;
    }
}

.wechat-section {
    text-align: center;
}

.help-qrcode {
    width: 200px;
    height: 200px;
    margin-top: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

@media (max-width: 1024px) {
    .help-content .container {
        grid-template-columns: 1fr;
    }

    .help-sidebar {
        position: static;
    }

    .help-nav {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .help-nav-link {
        margin-bottom: 0;
    }
}

@media (max-width: 768px) {
    .help-hero {
        padding: 120px 0 60px;
    }

    .help-hero h1 {
        font-size: 1.75rem;
    }

    .help-card {
        padding: 1.5rem;
    }

    .help-section h2 {
        font-size: 1.25rem;
    }
}