/* ================================
   下拉菜单系统样式
   ================================ */

.dropdown-system {
    display: flex;
    flex-direction: column;
    gap: 1.6rem; /* 间距增加10%：从1.5rem增加到1.65rem */
    width: 100%;
    max-width: 1400px; /* 限制最大宽度为1400px */
    margin: 0 auto; /* 居中显示 */
}

/* 下拉项容器 */
.dropdown-item {
    background: rgba(26, 18, 21, 0.92);
    border-radius: var(--radius-xl);
    overflow: visible; /* 允许粒子效果超出标题栏 */
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    border: 1px solid rgba(220, 56, 57, 0.15);
    position: relative;
}

.dropdown-item:hover {
    box-shadow: var(--shadow-xl);
    /* 移除向上移动效果 */
}

/* 下拉头部 - 带背景图分隔效果 */
.dropdown-header {
    position: relative;
    padding: 8.25px 0.98rem;
    cursor: pointer;
    overflow: visible;
    transition: all var(--transition-normal);
    border-radius: var(--radius-xl);
    border: 1px solid transparent;
}

/* 悬浮时标题栏红色边框包裹 */
.dropdown-header:hover {
    border-color: #dc3839;
}

/* 展开状态标题栏底部无边框，与内容区连为一体 */
.dropdown-item.active .dropdown-header {
    border-color: #dc3839;
    border-bottom-color: transparent;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

/* 背景图层 - 每个标题独立显示完整图片的不同部分 */
.dropdown-header-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover; /* 保持图片比例，覆盖整个标题栏 */
    background-repeat: no-repeat;
    opacity: 0.22; /* 默认透明度 */
    transition: all var(--transition-normal);
    z-index: 0;
    border-radius: var(--radius-xl); /* 背景图跟随圆角 */
}

/* 展开状态下背景图只保留顶部圆角 */
.dropdown-item.active .dropdown-header-bg {
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

/* 每个标题显示图片中间80%区域的不同部分 */
/* 第1部分 - 中间80%区域的第1份 */
.bg-part-1 {
    background-position: center 15.71%;
}

/* 第2部分 - 中间80%区域的第2份 */
.bg-part-2 {
    background-position: center 27.14%;
}

/* 第3部分 - 中间80%区域的第3份 */
.bg-part-3 {
    background-position: center 38.57%;
}

/* 第4部分 - 中间80%区域的第4份（正中） */
.bg-part-4 {
    background-position: center 50%;
}

/* 第5部分 - 中间80%区域的第5份 */
.bg-part-5 {
    background-position: center 61.43%;
}

/* 第6部分 - 中间80%区域的第6份 */
.bg-part-6 {
    background-position: center 72.86%;
}

/* 第7部分 - 中间80%区域的第7份 */
.bg-part-7 {
    background-position: center 84.29%;
}

.dropdown-header:hover .dropdown-header-bg {
    opacity: 0.55; /* 悬停透明度 */
    /* 移除背景图片放大效果 */
}

/* 下拉标题 */
.dropdown-title {
    position: relative;
    z-index: 1;
    color: #e9e3e3; /* 标题栏名字颜色设为浅色 */
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0;
    text-align: center; /* 文字居中 */
    width: 100%; /* 占据全宽 */
    display: flex;
    align-items: center;
    justify-content: center; /* 水平居中 */
    transition: color var(--transition-fast);
}

.dropdown-header:hover .dropdown-title {
    color: var(--secondary-color);
}

/* ================================
   守望先锋风格火焰冲击特效
   ================================ */

/* 粒子容器 */
.particle-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: visible; /* 允许粒子超出容器 */
    pointer-events: none;
    z-index: 9999; /* 确保粒子显示在最上层 */
}

/* 冲击波圆环 */
.shockwave {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid #ff8888;
    box-shadow: 0 0 20px #dc3839, 0 0 40px #af3031;
    pointer-events: none;
    will-change: transform, opacity;
}

/* 下拉内容区域 */
.dropdown-content {
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(26, 18, 21, 0.88);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    border: 1px solid transparent;
    border-top: none;
}

/* 展开状态 - 红色边框与标题栏连为一体 */
.dropdown-item.active .dropdown-content {
    overflow: hidden;
    visibility: visible;
    border-color: #dc3839;
    border-top-color: transparent;
}

/* 下拉内容内部 */
.dropdown-content-inner {
    padding: var(--spacing-xl);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    opacity: 1;
    transform: none;
}

.dropdown-content-inner p {
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

/* 介绍性文字前的装饰圆点 */
.dropdown-content-inner p.intro-text {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 600;
    color: #fc3f3e;
}

.dropdown-content-inner p.intro-text::before {
    content: '';
    flex-shrink: 0;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #dc3839;
    box-shadow: 0 0 6px rgba(220, 56, 57, 0.5);
}

.dropdown-content-inner ul,
.dropdown-content-inner ol {
    margin-left: 0;
    margin-bottom: var(--spacing-md);
    list-style: none; /* 移除所有列表标记 */
}

.dropdown-content-inner li {
    color: var(--text-primary);
    margin-bottom: 0.15rem; /* 减小行间距 */
    position: relative;
    padding-left: 1.2rem; /* 为横杠图标留出空间 */
    line-height: 1.5;
}

/* 每行前的横杠图标 */
.dropdown-content-inner li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.65em;
    width: 12px;
    height: 2px;
    background: #dc3839;
    border-radius: 1px;
    box-shadow: 0 0 4px rgba(220, 56, 57, 0.4);
}

/* 可点击文字 - 点击打开对应下拉菜单 */
.dropdown-content-inner .dropdown-link {
    color: var(--primary-color);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-fast);
    border-bottom: 1px dashed transparent;
}

.dropdown-content-inner .dropdown-link:hover {
    color: var(--secondary-color);
    border-bottom-color: var(--secondary-color);
}

/* 红色加号 */
.dropdown-content-inner .plus-red {
    color: #fc3f3e;
    font-weight: 700;
}

/* 绿色提示文字 - 改为暗红柔和色 */
.dropdown-content-inner .green-text {
    color: #c6b6b6;
    font-weight: 500;
}

/* 购买按钮 - 透明边框，匹配标题栏圆角效果 */
.purchase-btn {
    display: block;
    width: fit-content;
    margin: var(--spacing-md) auto 0;
    padding: 0.55rem 2rem;
    font-size: 1.05rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    background: transparent;
    color: #e9e3e3;
    border: 1px solid rgba(220, 56, 57, 0.35);
    border-radius: var(--radius-xl); /* 与标题栏一致的圆角 */
    cursor: pointer;
    transition: all var(--transition-normal);
}

.purchase-btn:hover {
    border-color: rgba(220, 56, 57, 0.7);
    background: rgba(220, 56, 57, 0.08);
    box-shadow: 0 0 12px rgba(220, 56, 57, 0.2);
}

/* FAQ项目样式 */
.faq-item {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(220, 56, 57, 0.15);
}

.faq-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.faq-item h4 {
    color: #dc3839;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.faq-item p {
    color: #c6b6b6;
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.7;
}

/* ================================
   下拉菜单动画增强
   ================================ */

/* 展开动画 */
@keyframes expandContent {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item.active .dropdown-content-inner {
    animation: expandContent 0.3s ease forwards;
}

/* ================================
   下拉菜单分隔线样式
   ================================ */

/* 在下拉项之间添加分隔效果 */
.dropdown-item::before {
    content: '';
    display: block;
    width: 100%;
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(220, 56, 57, 0.3) 20%,
        rgba(220, 56, 57, 0.5) 50%,
        rgba(220, 56, 57, 0.3) 80%,
        transparent 100%
    );
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.dropdown-item:hover::before {
    opacity: 1;
}

/* 第一个下拉项不显示上分隔线 */
.dropdown-item:first-child::before {
    display: none;
}

/* ================================
   下拉菜单悬停效果
   ================================ */

/* ================================
   响应式调整（在小屏幕上）
   ================================ */

@media (max-width: 768px) {
    .dropdown-system {
        gap: var(--spacing-md);
    }

    .dropdown-header {
        padding: var(--spacing-lg);
    }

    .dropdown-title {
        font-size: 1.1rem;
    }

    .dropdown-content-inner {
        padding: var(--spacing-lg);
    }

    .dropdown-content-inner ul,
    .dropdown-content-inner ol {
        margin-left: var(--spacing-md);
    }
}

/* ================================
   视频演示图片展示样式
   ================================ */

.video-demo-gallery {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 20px;
    flex-wrap: wrap;
    padding: var(--spacing-md) 0;
}

.demo-card {
    position: relative;
    width: 185px;
    cursor: pointer;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.demo-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.demo-card img {
    width: 185px;
    height: auto;
    display: block;
    transition: filter var(--transition-normal);
}

.demo-card::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.55);
    border-radius: 50%;
    pointer-events: none;
    transition: all var(--transition-normal);
    z-index: 2;
    border: 2px solid rgba(255, 255, 255, 0.8);
}

.demo-card::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-40%, -50%);
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 11px 0 11px 20px;
    border-color: transparent transparent transparent #fff;
    pointer-events: none;
    transition: all var(--transition-normal);
    z-index: 3;
}

.demo-card:hover::after {
    background: rgba(220, 56, 57, 0.75);
    transform: translate(-50%, -50%) scale(1.15);
}

.demo-card:hover::before {
    border-color: transparent transparent transparent #fff;
}

.demo-card:hover img {
    filter: blur(2px) brightness(1.1);
}

.demo-label {
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: #fff;
    padding: 15px 10px 10px;
    text-align: center;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-normal);
}

.demo-card:hover .demo-label {
    background: linear-gradient(to top, rgba(220, 56, 57, 0.9), transparent);
}

/* ================================
   下载文件卡片样式
   ================================ */

.download-cards {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    padding: var(--spacing-md) 0;
}

.download-card {
    width: 185px;
    padding: 20px 15px;
    border: 2px solid rgba(220, 56, 57, 0.3);
    border-radius: var(--radius-lg);
    background: rgba(26, 18, 21, 0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.download-card:hover {
    border-color: rgba(220, 56, 57, 0.6);
    background: rgba(42, 23, 25, 0.8);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.download-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: #e9e3e3;
    text-align: center;
}

.download-btn {
    padding: 8px 20px;
    background: transparent;
    border: 1px solid rgba(220, 56, 57, 0.4);
    border-radius: var(--radius-md);
    color: #dc3839;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.download-btn:hover {
    background: rgba(220, 56, 57, 0.15);
    border-color: rgba(220, 56, 57, 0.7);
    transform: scale(1.05);
}

/* ================================
   社交链接图标样式
   ================================ */

.social-links {
    display: flex;
    gap: 16px;
    margin-top: 10px;
}

.social-icon {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #c6b6b6;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-normal);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(220, 56, 57, 0.15);
}

.social-icon:hover {
    color: #dc3839;
    border-color: rgba(220, 56, 57, 0.4);
    background: rgba(220, 56, 57, 0.08);
    transform: translateY(-2px);
}

.social-icon svg {
    flex-shrink: 0;
}