* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Inter", "微软雅黑", sans-serif;
}

body {
    background-color: #f8fafb;
    color: #34495e;
    padding: 6rem 2rem 4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 100vh;
}

/* 导航栏基础样式（PC端） */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100vw;
    background-color: #ffffff;
    border-bottom: 1px solid #e9ecef;
    padding: 1rem 2rem;
    z-index: 999;
    transition: padding 0.3s ease;
    /* 适配过渡动画 */
}

.navbar-container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 0.5rem;
    /* 预留最小内边距，避免内容贴边 */
}

.navbar-left {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-shrink: 0;
    /* 防止被挤压 */
}

.logo {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    flex-shrink: 0;
    /* 禁止logo缩小 */
}

.navbar-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    /* 文字溢出省略 */
}

/* PC端导航链接 */
.navbar-right {
    display: flex;
    gap: 1.8rem;
}

.nav-link {
    font-size: 0.9rem;
    color: #7f8c8d;
    text-decoration: none;
    transition: color 0.3s ease;
    white-space: nowrap;
    /* 链接不换行 */
}

.nav-link:hover {
    color: #3498db;
}

/* 汉堡菜单按钮（默认隐藏） */
.hamburger-btn {
    display: none;
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    padding: 0;
    z-index: 1000;
    flex-shrink: 0;
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background-color: #2c3e50;
    border-radius: 1px;
    transition: all 0.3s ease;
}

/* 移动端导航菜单（默认隐藏） */
.mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: #ffffff;
    border-left: 1px solid #e9ecef;
    padding: 6rem 1.5rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 998;
}

.mobile-nav.active {
    transform: translateX(0);
}

/* 遮罩层 */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.2);
    z-index: 997;
    display: none;
}

.nav-overlay.active {
    display: block;
}

/* ========== 媒体查询适配 ========== */
/* 平板/大屏手机（768px以下） */
@media (max-width: 768px) {
    .navbar {
        padding: 0.8rem 1rem;
    }

    .navbar-right {
        display: none;
    }

    .hamburger-btn {
        display: flex;
    }

    /* 汉堡按钮动画 */
    .hamburger-btn.active .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger-btn.active .hamburger-line:nth-child(2) {
        opacity: 0;
    }

    .hamburger-btn.active .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    /* 移动端链接样式 */
    .mobile-nav .nav-link {
        font-size: 1rem;
        padding: 0.5rem 0;
        border-bottom: 1px solid #f0f4f8;
    }
}

/* 普通手机（480px以下） */
@media (max-width: 480px) {
    .navbar {
        padding: 0.6rem 0.8rem;
        /* 进一步缩小上下内边距 */
    }

    .navbar-title {
        font-size: 1rem;
        /* 缩小标题字号 */
        max-width: 120px;
        /* 限制标题宽度，避免挤压 */
    }

    .logo {
        width: 28px;
        height: 28px;
        /* 缩小logo */
        font-size: 0.9rem;
    }

    .navbar-left {
        gap: 0.6rem;
        /* 缩小logo和标题间距 */
    }

    .mobile-nav {
        width: 90%;
        /* 占更多屏幕宽度 */
        padding: 5rem 1rem 2rem;
        /* 减少左右内边距，增加点击区域 */
        gap: 1.2rem;
        /* 缩小链接间距 */
    }

    .mobile-nav .nav-link {
        font-size: 0.95rem;
        /* 微调链接字号 */
        padding: 0.4rem 0;
        /* 减少链接上下padding */
    }

    .hamburger-btn {
        width: 30px;
        height: 30px;
        /* 缩小汉堡按钮 */
        gap: 3px;
        /* 缩小线条间距 */
    }
}

/* 超小屏手机（360px以下，覆盖旧款安卓/小屏机） */
@media (max-width: 360px) {
    .navbar {
        padding: 0.5rem 0.6rem;
        /* 最小化内边距 */
    }

    .navbar-title {
        font-size: 0.9rem;
        /* 超小屏标题字号 */
        max-width: 100px;
        /* 进一步限制标题宽度 */
    }

    .logo {
        width: 26px;
        height: 26px;
        /* 最小logo尺寸 */
        font-size: 0.8rem;
    }

    .navbar-left {
        gap: 0.4rem;
        /* 最小间距 */
    }

    .mobile-nav {
        width: 95%;
        /* 几乎占满屏幕，方便点击 */
        padding: 4.5rem 0.8rem 2rem;
        /* 最小内边距 */
        gap: 1rem;
    }

    .mobile-nav .nav-link {
        font-size: 0.9rem;
        /* 超小屏链接字号 */
        padding: 0.35rem 0;
    }

    .hamburger-btn {
        width: 28px;
        height: 28px;
        /* 最小汉堡按钮 */
    }

    .hamburger-line {
        height: 1.8px;
        /* 缩小线条高度，适配小按钮 */
    }

    /* 汉堡按钮动画微调（适配小尺寸） */
    .hamburger-btn.active .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(4px, 4px);
    }

    .hamburger-btn.active .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(4px, -4px);
    }
}



















/* 页面容器（复用） */
.container {
    width: 100%;
    max-width: 800px;
    text-align: left;
}

/* 标题样式（微调适配教程页面） */
.page-title {
    font-size: 2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 0.5rem;
    text-align: center;
}

.page-subtitle {
    font-size: 1rem;
    color: #7f8c8d;
    margin-bottom: 3rem;
    letter-spacing: 0.5px;
    text-align: center;
}

/* Markdown教程核心区域（替换原程序展示区） */
.tutorial-showcase {
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    padding: 2rem;
    margin-bottom: 3rem;
}

/* Markdown渲染样式（适配极简风格） */
.markdown-content {
    line-height: 1.8;
    font-size: 1.05rem;
}

/* Markdown标题样式 */
.markdown-content h1 {
    font-size: 1.8rem;
    color: #2c3e50;
    margin: 1.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e9ecef;
}

.markdown-content h2 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin: 1.2rem 0 0.8rem;
}

.markdown-content h3 {
    font-size: 1.2rem;
    color: #2c3e50;
    margin: 1rem 0 0.6rem;
}

.markdown-content h4 {
    font-size: 1.1rem;
    color: #2c3e50;
    margin: 0.8rem 0 0.5rem;
}

/* Markdown段落/列表样式 */
.markdown-content p {
    margin-bottom: 1rem;
}

.markdown-content ul,
.markdown-content ol {
    margin: 0 0 1rem 2rem;
    padding-left: 1rem;
}

.markdown-content li {
    margin-bottom: 0.5rem;
}

/* Markdown代码块样式（与开源页面统一） */
.markdown-content pre {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 1rem;
    overflow-x: auto;
    border: 1px solid #e9ecef;
    margin: 1rem 0;
}

.markdown-content code {
    font-family: "Consolas", "Monaco", monospace;
    font-size: 0.9rem;
    background-color: #f0f4f8;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
}

.markdown-content pre code {
    background-color: transparent;
    padding: 0;
}

/* Markdown链接/表格样式 */
.markdown-content a {
    color: #3498db;
    text-decoration: none;
}

.markdown-content a:hover {
    text-decoration: underline;
}

.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.markdown-content th,
.markdown-content td {
    padding: 0.8rem;
    border: 1px solid #e9ecef;
    text-align: left;
}

.markdown-content th {
    background-color: #f8f9fa;
    font-weight: 600;
}

/* 代码块高亮样式 */
.code-block {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 1rem;
    overflow-x: auto;
    border: 1px solid #e9ecef;
    margin: 1rem 0;
}

/* 引用样式 */
.markdown-content blockquote {
    border-left: 4px solid #3498db;
    padding: 0.5rem 0 0.5rem 1rem;
    margin: 1rem 0;
    background-color: #f8f9fa;
    color: #5d6d7e;
}

/* 水平线样式 */
.markdown-content hr {
    border: none;
    border-top: 1px solid #e9ecef;
    margin: 1.5rem 0;
}

/* 底部版权（复用） */
.footer {
    margin-top: 4rem;
    font-size: 0.85rem;
    color: #bdc3c7;
    text-align: center;
}