/* 基础样式重置与变量定义 */
:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #f9fafb;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --card-radius: 12px;
    --transition: all 0.3s ease;
    --text-color: #1f2937;
    --text-secondary: #6b7280;
}

/* 主容器样式 */
.help-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 15px 100px;
    color: var(--text-color);
}

/* 头部样式 */
.help-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e5e7eb;
}

    .help-header h1 {
        font-size: 2rem;
        color: var(--primary-color);
        margin-bottom: 10px;
    }

    .help-header p {
        font-size: 1.1rem;
        color: var(--text-secondary);
        max-width: 800px;
        margin: 0 auto;
    }

/* 帮助网格布局 */
.help-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 40px;
}

/* 帮助卡片样式 */
.help-card {
    background: white;
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    overflow: hidden;
    position: relative;
}

    .help-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    }

.help-card__link {
    display: block;
    padding: 25px;
    text-decoration: none;
    color: inherit;
}

.help-card__title {
    font-size: 1.2rem;
    margin: 0 0 15px;
    color: var(--primary-color);
    position: relative;
    padding-left: 25px;
}

    .help-card__title::before {
        content: "?";
        position: absolute;
        left: 0;
        top: 0;
        width: 20px;
        height: 20px;
        background: var(--primary-color);
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.9rem;
        font-weight: bold;
    }

.help-card__content {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.help-card__action {
    display: inline-flex;
    align-items: center;
    color: var(--primary-color);
    font-weight: 500;
    transition: var(--transition);
}

    .help-card__action::after {
        content: "→";
        margin-left: 8px;
        transition: var(--transition);
    }

.help-card:hover .help-card__action::after {
    transform: translateX(5px);
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

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

    .pagediv a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: 6px;
        background: white;
        color: var(--text-color);
        text-decoration: none;
        font-weight: 500;
        transition: var(--transition);
        border: 1px solid #e5e7eb;
    }

        .pagediv a:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
        }

        .pagediv a.current {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

        .pagediv a.prev,
        .pagediv a.next {
            padding: 0 15px;
            width: auto;
        }

/* 响应式调整 */
@media (min-width: 768px) {
    .help-container {
        padding: 30px 20px 120px;
    }

    .help-header h1 {
        font-size: 2.5rem;
    }

    .help-header p {
        font-size: 1.2rem;
    }

    .help-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    .help-card__link {
        padding: 30px;
    }

    .help-card__title {
        font-size: 1.3rem;
    }
}

@media (min-width: 1024px) {
    .help-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.help-card {
    animation: fadeIn 0.3s ease forwards;
}

    .help-card:nth-child(odd) {
        animation-delay: 0.1s;
    }

    .help-card:nth-child(even) {
        animation-delay: 0.2s;
    }

    /* 卡片悬停效果增强 */
    .help-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, rgba(79, 70, 229, 0.05), transparent);
        opacity: 0;
        transition: var(--transition);
        pointer-events: none;
    }

    .help-card:hover::before {
        opacity: 1;
    }

/* 分页按钮悬停效果 */
.pagediv a {
    position: relative;
    overflow: hidden;
}

    .pagediv a::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 5px;
        height: 5px;
        background: rgba(79, 70, 229, 0.2);
        opacity: 0;
        border-radius: 100%;
        transform: scale(1, 1) translate(-50%);
        transform-origin: 50% 50%;
    }

    .pagediv a:hover::after {
        animation: ripple 0.6s ease-out;
    }

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }

    100% {
        transform: scale(20, 20);
        opacity: 0;
    }
}

/* 无障碍优化 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* 结构化数据增强 */
[itemprop="name"] {
    font-weight: 600;
}

[itemprop="text"] {
    line-height: 1.6;
}

/* 卡片标签效果 */
.help-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-color);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.3s ease;
}

.help-card:hover::after {
    transform: scaleY(1);
}

/* 分页当前页指示器增强 */
.pagediv a.current {
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.2);
    font-weight: 600;
}

/* 帮助卡片图标动画 */
.help-card__title::before {
    transition: var(--transition);
}

.help-card:hover .help-card__title::before {
    transform: rotate(15deg);
    background: var(--primary-hover);
}