/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f0f2f5;
}

/* 帮助中心头部 Banner */
.help-header {
    height: 300px;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}
.header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.header-content {
    position: relative;
    z-index: 2;
}
.help-header__title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 10px;
}
.help-header__desc {
    font-size: 20px;
    opacity: 0.9;
}

/* 帮助内容容器 */
.help-container {
    padding: 0 20px;
    margin-bottom: 60px; /* 新增：底部与页脚的间距 */
}

.help-cards-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    max-width: 1400px;
    margin: 0 auto;
}

.help-card {
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: box-shadow 0.3s;
    min-width: 320px;
}

.help-card:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.card-info {
    margin-bottom: 22px;
    text-align: center;
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 8px;
    line-height: 1.4;
}

.card-desc {
    font-size: 14px;
    color: #7f8c8d;
}

.card-action {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 18px;
    border-top: 1px solid #f0f2f5;
}

.view-more {
    font-size: 14px;
    color: #546e7a;
}

.arrow-right {
    font-size: 16px;
    color: #546e7a;
}

/* 响应式适配 */
@media (max-width: 1200px) {
    .help-cards-container {
        grid-template-columns: repeat(2, 1fr);
        max-width: 900px;
    }
}

@media (max-width: 768px) {
    .help-cards-container {
        grid-template-columns: 1fr;
        max-width: 100%;
    }

    .help-header__title {
        font-size: 32px;
    }
}