/* Bitget 常见问题样式 */
#faq-section {
    background-color: #000;
    padding: 80px 0;
    color: #fff;
}

.faq-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.faq-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 50px;
    font-weight: bold;
}

.faq-item {
    margin-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    color: #fff;
    padding: 20px 0;
    text-align: left;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    position: relative;
}

.faq-question:hover {
    color: #00c2ff;
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.faq-question:focus {
    outline: none;
    box-shadow: 0 0 0 2px #00c2ff;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer-inner {
    padding: 0 0 20px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    #faq-section {
        padding: 60px 0;
    }
    
    .faq-title {
        font-size: 2rem;
        margin-bottom: 40px;
    }
    
    .faq-question {
        font-size: 1.1rem;
        padding: 15px 0;
    }
    
    .faq-answer-inner {
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    #faq-section {
        padding: 20px 0;
    }
    
    .faq-title {
        font-size: 1.8rem;
        margin-bottom: 30px;
    }
    
    .faq-question {
        font-size: 1rem;
        padding: 12px 0;
    }
    
    .faq-answer-inner {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    .faq-question::after {
        font-size: 1.3rem;
    }
}

/* 浏览器兼容性优化 */
.faq-question {
    -webkit-tap-highlight-color: transparent;
}

@media (-webkit-device-pixel-ratio: 1.5) {
    .faq-container {
        padding: 0 15px;
    }
}

/* 动画性能优化 */
.faq-item {
    will-change: max-height;
}

/* 减少动画模式支持 */
@media (prefers-reduced-motion: reduce) {
    .faq-question,
    .faq-answer {
        transition: none;
    }
}

/* Bitget 页脚样式 */
.footer {
    background-color: #000;
    color: #fff;
    padding: 0px 0 30px;
    margin-top: 80px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fff;
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column li {
    margin-bottom: 12px;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: #00c2ff;
}

.footer-qrcode {
    margin-top: 30px;
    text-align: center;
}

.qrcode-image {
    background-color: #fff;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 10px;
    display: inline-block;
}

.footer-qrcode p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

.footer-bottom {
    max-width: 1200px;
    margin: 40px auto 0;
    padding: 20px 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    margin: 5px 0;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
    
    .footer-column:last-child {
        grid-column: span 3;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .footer-qrcode {
        margin-top: 15px;
    }
}

@media (max-width: 992px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-column:last-child {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 25px;
        text-align: center;
    }
    
    .footer-column:last-child {
        grid-column: span 1;
    }
    
    .footer-bottom {
        margin-top: 30px;
    }
}

@media (max-width: 480px) {
    .footer {
        padding: 30px 0 15px;
    }
    
    .footer-content {
        padding: 0 15px;
    }
    
    .footer-column h4 {
        font-size: 15px;
        margin-bottom: 15px;
    }
    
    .footer-column li {
        margin-bottom: 10px;
    }
    
    .footer-column a {
        font-size: 13px;
    }
    
    .qrcode-image svg {
        width: 100px;
        height: 100px;
    }
    
    .footer-bottom {
        padding: 15px 15px 0;
    }
    
    .footer-bottom p {
        font-size: 12px;
    }
}

/* 浏览器兼容性优化 */
.footer-column a {
    -webkit-tap-highlight-color: transparent;
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .footer-column a:active {
        color: #00c2ff;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .footer-bottom {
        border-color: #fff;
    }
    
    .footer-column a {
        color: #fff;
    }
    
    .footer-bottom p {
        color: #fff;
    }
}

/* 减少动画模式支持 */
@media (prefers-reduced-motion: reduce) {
    .footer-column a {
        transition: none;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .faq-item {
        border-color: #fff;
    }
    
    .faq-answer-inner {
        color: #fff;
    }
}