:root {
    --color-bg-page: #008cff;     /* 页面背景: 亮蓝色 */
    --color-content-bg: #ffffff;  /* 内容区域背景: 白色 */
    --color-primary-yellow: #ffc107; /* 顶部 Logo 区黄色/底部链接条 */
    --color-primary-orange: #ff6600; /* 搜索按钮橙色 */
    --color-text-main: #333333;
    --color-nav-black: #000000;
    --grid-cols-pc: 10;           /* PC端 10 列网格 */
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Arial', sans-serif;
    background-color: var(--color-bg-page);
    color: var(--color-text-main);
    min-height: 100vh;
}
a { text-decoration: none; color: inherit; }

/* --- 2. 网页结构 (居中内容区) --- */
.page-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    background-color: var(--color-content-bg);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* --- 3. 顶部 Header --- */
.top-nav-black {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    background-color: var(--color-nav-black);
    padding: 5px 10px;
    font-size: 13px;
    color: white;
    position: relative;
}
#open-menu {
    cursor: pointer;
    font-size: 18px;
    margin-right: 15px;
    display: none; /* PC 隐藏 */
}
.main-nav-links {
    display: flex;
    gap: 15px;
    font-size: 14px;
    font-weight: bold;
}
.main-nav-links a {
    color: white;
}
.header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--color-primary-yellow);
    padding: 5px 10px;
}
.logo-area {
    font-size: 26px;
    font-weight: bold;
    color: var(--color-text-main);
    display: flex;
    align-items: baseline;
}
.logo-area span:first-child { color: black; }
.logo-area span:last-child {
    color: red;
    font-size: 18px;
    vertical-align: super;
}
.search-area-right {
    display: flex;
    align-items: center;
    border: 1px solid #ccc;
    background-color: white;
    border-radius: 4px;
    overflow: hidden;
    height: 30px;
}
.search-area-right input {
    padding: 5px 10px;
    border: none;
    outline: none;
    font-size: 14px;
    width: 150px;
}
.search-area-right button {
    background-color: var(--color-primary-orange);
    color: white;
    border: none;
    padding: 0 10px;
    cursor: pointer;
    height: 100%;
    font-size: 14px;
}

/* --- 4. 游戏网格 (Grid) --- */
.game-grid-section {
    flex-grow: 1;
    padding: 5px 0;
    background-color: var(--color-content-bg);
}
.game-grid {
    display: grid;
    grid-template-columns: repeat(var(--grid-cols-pc), 1fr);
    gap: 2px;
    padding: 5px;
}
.game-card {
    display: block;
    overflow: hidden;
    position: relative;
    aspect-ratio: 1 / 1;
    border-radius: 8px;
    background-color: #f5f5f5;
}
.game-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* --- 5. 底部 Footer (带描述) --- */

/* 网站描述区域 (新增) */
.website-description {
    background-color: #f8f8f8; /* 略微不同的背景色以便区分 */
    padding: 20px;
    font-size: 14px;
    line-height: 1.6;
    color: #666;
    border-top: 1px solid #eee;
}
.website-description h3 {
    font-size: 16px;
    color: var(--color-text-main);
    margin-bottom: 10px;
}

/* 蓝条区域 (链接和按钮) */
.footer-blue-bar {
    background-color: var(--color-bg-page);
    padding: 15px 10px;
    color: white;
    font-size: 12px;
    text-align: center;
}
.footer-blue-bar .footer-links {
    display: flex;
    justify-content: center;
    gap: 10px;
}
.footer-blue-bar .footer-links a {
    color: white;
    text-decoration: underline;
    margin: 0 5px;
}

/* 亮黄色链接/版权条 (最底部) */
.footer-yellow-bar {
    background-color: var(--color-primary-yellow);
    color: var(--color-text-main);
    font-size: 12px;
    padding: 10px 20px;
    text-align: center;
}

/* --- 6. 移动端菜单样式 --- */
.mobile-menu {
    position: fixed; top: 0; left: 0; width: 70%; max-width: 250px; height: 100%;
    background-color: var(--color-nav-black);
    color: white;
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    z-index: 200;
}
.mobile-menu.open { transform: translateX(0); }
.menu-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 190;
    display: none;
}
.mobile-menu-item {
    padding: 15px 20px; border-bottom: 1px solid #444; display: block;
}
.mobile-menu-close {
    text-align: right; padding: 10px; font-size: 24px; cursor: pointer;
}


/* --- 7. 响应式布局 (Mobile) --- */
@media (max-width: 768px) {

    /* 顶部栏调整 */
    #open-menu { display: block; }
    .main-nav-links { display: none; }
    .top-nav-black {
        justify-content: space-between;
        align-items: center;
    }
    .header-main {
        flex-wrap: nowrap;
        padding: 10px 5px;
    }
    .search-area-right {
        width: 50%;
        height: 35px;
    }
    .search-area-right input {
        width: 100%;
    }

    /* 移动端网格: 3 列 */
    .game-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* 底部调整 */
    .footer-blue-bar {
        padding: 10px 5px;
    }
    .footer-blue-bar .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}