/* FAQ 页面样式 */

/* 页面头部链接 */
.hero-link {
    color: white;
    text-decoration: underline;
    opacity: 1;
}

.hero-link:hover {
    opacity: 0.8;
}

/* 搜索框 */
.search-section {
    padding: 40px 0;
    background: white;
}

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

.search-box i {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
    font-size: 18px;
}

.search-input {
    width: 100%;
    padding: 16px 20px 16px 50px;
    font-size: 16px;
    border: 2px solid var(--border);
    border-radius: 12px;
    outline: none;
    transition: all 0.3s;
    font-family: inherit;
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

/* 分类导航 */
.category-nav {
    padding: 20px 0;
    background: white;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 70px;
    z-index: 100;
}

.category-tabs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.category-tab {
    padding: 10px 20px;
    border: none;
    background: var(--light);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--secondary);
    cursor: pointer;
    transition: all 0.3s;
}

.category-tab:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.category-tab.active {
    background: var(--primary);
    color: white;
}

/* FAQ 列表 */
.faq-section {
    padding: 60px 0 100px;
    background: var(--light);
}

.faq-category {
    margin-bottom: 40px;
}

.faq-category-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.faq-item {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.faq-item:hover {
    box-shadow: var(--shadow-lg);
}

.faq-question {
    width: 100%;
    padding: 20px 25px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: none;
    border: none;
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    cursor: pointer;
    text-align: left;
    transition: all 0.3s;
    font-family: inherit;
}

.faq-question:hover {
    color: var(--primary);
}

.faq-question i {
    font-size: 14px;
    color: var(--gray);
    transition: transform 0.3s;
    flex-shrink: 0;
    margin-left: 15px;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
    color: var(--primary);
}

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

.faq-item.active .faq-answer {
    max-height: 1000px;
}

.faq-answer p,
.faq-answer ul,
.faq-answer ol {
    padding: 0 25px 20px;
    font-size: 15px;
    color: var(--secondary);
    line-height: 1.8;
}

.faq-answer ul,
.faq-answer ol {
    padding-left: 45px;
}

.faq-answer ul li,
.faq-answer ol li {
    margin-bottom: 8px;
}

.faq-answer strong {
    color: var(--dark);
}

/* 数字信件复制按钮 */
.dl-copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: 14px;
    color: var(--primary);
    background: rgba(79, 70, 229, 0.1);
    border: 1px solid rgba(79, 70, 229, 0.2);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
    vertical-align: middle;
}

.dl-copy-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.dl-copy-btn.copied {
    background: #10b981;
    color: white;
    border-color: #10b981;
}

.dl-copy-btn i {
    font-size: 13px;
}

/* 辅助按钮 - 用于剪贴板服务初始化 */
.acb-x1y2 {
    position: fixed;
    left: -9999px;
    top: -9999px;
    width: 1px;
    height: 1px;
}

/* 无结果提示 */
.no-results {
    text-align: center;
    padding: 60px 20px;
}

.no-results i {
    font-size: 48px;
    color: var(--gray);
    margin-bottom: 20px;
}

.no-results h3 {
    font-size: 20px;
    color: var(--dark);
    margin-bottom: 10px;
}

.no-results p {
    color: var(--secondary);
    font-size: 15px;
}

.no-results a {
    color: var(--primary);
    text-decoration: none;
}

.no-results a:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .category-nav {
        top: 60px;
    }

    .category-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 10px;
        -webkit-overflow-scrolling: touch;
    }

    .category-tab {
        white-space: nowrap;
    }

    .faq-question {
        padding: 15px 20px;
        font-size: 15px;
    }

    .faq-answer p,
    .faq-answer ul,
    .faq-answer ol {
        padding: 0 20px 15px;
        font-size: 14px;
    }
}