:root {
        --vivid-hg-bg-dark: #2d2d2d;
        --vivid-hg-bg-header: #000000;
        --vivid-hg-bg-card: #3a3a3a;
        --vivid-hg-text-light: #ffffff;
        --vivid-hg-text-footer: #fffde7;
        --vivid-hg-text-muted: #bbbbbb;
        --vivid-hg-orange-tag: #ff6f00;
        --vivid-hg-logo-orange: #f57f17;
        --vivid-hg-font-stack: Arial, Helvetica, sans-serif;
        --vivid-hg-nav-gradient: linear-gradient(to right, #f57f17, #f9a825, #fbc02d);
        --vivid-hg-footer-gradient: linear-gradient(to right, #fdd835, #fbc02d, #f9a825, #f57f17);
    }

    /* --- 2. 全局重置 --- */
    body {
        font-family: var(--vivid-hg-font-stack);
        margin: 0;
        padding: 0;
        background-color: var(--vivid-hg-bg-dark);
        color: var(--vivid-hg-text-light);
    }

    a {
        text-decoration: none;
        color: var(--vivid-hg-text-light);
        transition: opacity 0.2s;
    }

    a:hover {
        opacity: 0.8;
    }

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

    /* --- 3. 顶部 Header (黑色) --- */
    .vivid-hg-top-header {
        background-color: var(--vivid-hg-bg-header);
        padding: 10px 0;
        border-bottom: 1px solid #333;
    }

    .vivid-hg-header-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .vivid-hg-logo a {
        font-size: 28px;
        font-weight: 900;
        color: var(--vivid-hg-text-light);
        letter-spacing: -1px;
        text-transform: uppercase;
    }

    .vivid-hg-logo a span {
        color: var(--vivid-hg-logo-orange);
    }

    /* Search Bar & Focus Effect (动态) */
    .vivid-hg-search-bar { display: flex; }

    .vivid-hg-search-bar input {
        background-color: var(--vivid-hg-bg-dark);
        border: 1px solid #444;
        color: var(--vivid-hg-text-light);
        padding: 8px 12px;
        font-size: 14px;
        border-radius: 4px 0 0 4px;
        outline: none;
        transition: border-color 0.2s, box-shadow 0.2s;
    }

    .vivid-hg-search-bar input:focus {
        border-color: var(--vivid-hg-logo-orange);
        box-shadow: 0 0 5px rgba(245, 127, 23, 0.5);
    }

    .vivid-hg-search-bar button {
        background-color: var(--vivid-hg-bg-dark);
        border: 1px solid #444;
        border-left: none;
        color: var(--vivid-hg-text-light);
        padding: 0 12px;
        cursor: pointer;
        border-radius: 0 4px 4px 0;
        font-size: 16px;
    }

    /* --- 4. 主导航栏 (橙色渐变) --- */
    .vivid-hg-main-nav {
        background: var(--vivid-hg-nav-gradient);
        padding: 10px 0;
    }

    .vivid-hg-nav-list {
        display: flex;
        justify-content: space-between;
        align-items: center;
        overflow-x: auto;
    }

    /* Nav Item Hover Effect (动态) */
    .vivid-hg-nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 8px;
        padding: 5px 10px;
        min-width: 60px;
        transition: transform 0.2s ease, filter 0.2s ease;
    }

    .vivid-hg-nav-item:hover {
        transform: translateY(-3px);
        filter: brightness(1.15);
    }

    .vivid-hg-nav-icon {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background-color: rgba(255, 255, 255, 0.2);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        font-style: normal;
    }

    .vivid-hg-nav-item span {
        font-size: 13px;
        font-weight: 600;
        color: var(--vivid-hg-text-light);
    }

    /* --- 5. 波浪形边缘 (纯 CSS 模拟) --- */
    .vivid-hg-wave-divider {
        height: 15px;
        background-color: var(--vivid-hg-bg-dark);
        background: radial-gradient(
                circle at 50% 0,
                transparent 12px,
                var(--vivid-hg-bg-dark) 13px
        );
        background-size: 30px 15px;
        background-repeat: repeat-x;
    }

    /* --- 6. 主内容区域 --- */
    .vivid-hg-main-content {
        padding-top: 25px;
    }

    .vivid-hg-filter-bar {
        text-align: center;
        margin-bottom: 25px;
        margin-top: 25px;
    }

    /* Filter Button Hover Effect (动态) */
    .vivid-hg-filter-btn {
        background-color: var(--vivid-hg-text-light);
        color: var(--vivid-hg-bg-dark);
        padding: 8px 15px;
        border-radius: 20px;
        font-weight: 600;
        font-size: 14px;
        display: inline-block;
        transition: all 0.3s ease;
        border: 2px solid var(--vivid-hg-text-light);
    }

    .vivid-hg-filter-btn:hover {
        background-color: transparent;
        color: var(--vivid-hg-logo-orange);
        border-color: var(--vivid-hg-logo-orange);
    }

    /* 游戏网格 */
    .vivid-hg-game-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: 20px;
    }

    /* 卡片样式 */
    .vivid-hg-game-card {
        background-color: var(--vivid-hg-bg-card);
        border-radius: 8px;
        overflow: hidden;
        transition: transform 0.2s ease, box-shadow 0.2s ease;
        box-shadow: 0 2px 5px rgba(0,0,0,0.3);
    }

    .vivid-hg-game-card:hover {
        transform: scale(1.05);
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    }

    .vivid-hg-game-card a { text-decoration: none; }
    .vivid-hg-card-image-wrapper { position: relative; }

    .vivid-hg-game-card img {
        width: 100%;
        height: auto;
        aspect-ratio: 1 / 1;
        object-fit: cover;
        display: block;
    }

    /* "NEW" 标签 (修正后的丝带) */
    .vivid-hg-new-tag {
        position: absolute;
        top: 0;
        left: 0;
        width: 120px;
        height: 120px;
        overflow: hidden;
    }

    .vivid-hg-new-tag::before {
        content: "NEW";
        background-color: var(--vivid-hg-orange-tag);
        color: white;
        font-weight: bold;
        font-size: 12px;
        padding: 4px 0;
        width: 120px;
        text-align: center;
        transform: rotate(-45deg) translate(-30px, -10px);
        transform-origin: top left;
    }

    /* 标题和描述区域 */
    .vivid-hg-card-info { padding: 10px; }
    .vivid-hg-card-title {
        font-size: 15px;
        font-weight: 700;
        color: var(--vivid-hg-text-light);
        margin: 0 0 5px 0;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .vivid-hg-card-desc {
        font-size: 12px;
        color: var(--vivid-hg-text-muted);
        margin: 0;
        height: 30px;
        line-height: 1.25;
        overflow: hidden;
    }

    /* --- 7. 网站描述区域 (新增) --- */
    .vivid-hg-site-description {
        padding: 40px 0;
        margin-top: 30px; /* 与游戏网格下方保持间距 */
        background-color: var(--vivid-hg-bg-dark);
    }

    .vivid-hg-site-description h3 {
        color: var(--vivid-hg-logo-orange); /* 突出橙色标题 */
        font-size: 24px;
        margin-top: 0;
        margin-bottom: 15px;
        font-weight: 700;
        text-align: center;
    }

    .vivid-hg-site-description p {
        font-size: 14px;
        line-height: 1.6;
        color: var(--vivid-hg-text-light);
        text-align: justify;
    }

    /* --- 8. 页脚 (渐变) --- */
    .vivid-hg-footer {
        background: var(--vivid-hg-footer-gradient);
        padding: 40px 0 20px 0;
        /* 移除原有的 margin-top: 50px; 因为描述部分已经提供了间距 */
        color: var(--vivid-hg-text-footer);
    }

    .vivid-hg-footer-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 20px;
    }

    .vivid-hg-footer-col h4 {
        font-size: 18px;
        color: var(--vivid-hg-text-light);
        margin: 0 0 10px 0;
    }

    .vivid-hg-footer-col ul { list-style: none; padding: 0; margin: 0; }
    .vivid-hg-footer-col li { margin-bottom: 8px; }
    .vivid-hg-footer-col a {
        color: #272726;
        font-size: 14px;
        font-weight: 500;
    }

    /* Social Icons Hover Effect (动态) */
    .vivid-hg-footer-socials { display: flex; gap: 10px; }
    .vivid-hg-social-icon {
        font-size: 20px;
        width: 30px;
        height: 30px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(255, 255, 255, 0.8);
        color: var(--vivid-hg-logo-orange);
        border-radius: 50%;
        transition: transform 0.3s ease;
    }

    .vivid-hg-social-icon:hover {
        transform: rotate(10deg) scale(1.1);
    }

    /* --- 9. 响应式 --- */
    @media (max-width: 768px) {
        .vivid-hg-header-content {
            flex-direction: column;
            gap: 15px;
        }
        .vivid-hg-nav-list {
            justify-content: flex-start;
        }
        .vivid-hg-game-grid {
            grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        }
        .vivid-hg-site-description h3 {
            text-align: left;
        }
    }