/* 基础重置和全局样式 */
        * {
            margin: 0; padding: 0; box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.5;
        }

        /* 顶部导航 */
        .top-nav {
            background: #4a5568;
            color: white;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .nav-links {
            display: flex;
        }
        .nav-link {
            color: white;
            text-decoration: none;
            padding: 15px 20px;
            display: inline-block;
            transition: background 0.2s;
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .user-home {
            padding-right: 20px;
        }
        .user-home a {
            color: white;
            text-decoration: none;
            font-size: 14px;
            opacity: 0.85;
        }
        .user-home a:hover {
            opacity: 1;
        }

        /* 主标题区 */
        .hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            text-align: center;
            padding: 40px 20px 30px;
        }
        .hero h1 {
            font-size: 1.8rem;
            font-weight: 600;
        }

        /* 内容容器 */
        .container {
            padding: 0 16px 20px;
            max-width: 100%;
        }

        /* 介绍卡片 */
        .intro-card {
            background: white;
            border-radius: 12px;
            padding: 20px;
            margin: -20px 16px 20px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
            border: 1px solid #e2e8f0;
        }
        .intro-header {
            display: flex;
            align-items: center;
            margin-bottom: 12px;
        }
        .intro-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, #667eea, #764ba2);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 12px;
            font-size: 18px;
        }
        .intro-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: #2d3748;
        }
        .intro-text {
            color: #4a5568;
            font-size: 14px;
            line-height: 1.6;
        }

        /* 主要功能区域 */
        .main-section {
            background: white;
            border-radius: 12px;
            margin-bottom: 20px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
            overflow: hidden;
            padding: 20px;
        }
        .section-header {
            display: flex;
            align-items: center;
            margin-bottom: 12px;
        }
        .section-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, #ff6b6b, #ee5a24);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 12px;
            font-size: 16px;
        }
        .section-title {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2d3748;
        }
        .section-subtitle {
            color: #718096;
            font-size: 14px;
            margin-bottom: 16px;
        }

        /* 空状态 */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: #718096;
        }
        .empty-icon {
            width: 60px;
            height: 60px;
            background: #f7fafc;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 24px;
        }
        .empty-text {
            font-size: 15px;
            margin-bottom: 8px;
        }
        .empty-hint {
            font-size: 13px;
            opacity: 0.8;
        }

        /* 图片区域 */
        .image-section {
            display: flex;
            gap: 12px;
            padding-top: 10px;
            overflow-x: auto;
        }
        .content-image {
            width: 180px;
            height: 120px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }

        /* 底部区域 */
        .bottom-section {
            background: linear-gradient(135deg, #2c5530, #3d7c47);
            color: white;
            text-align: center;
            padding: 30px 20px;
            margin: 20px 0 0;
        }
        .quote-text {
            font-size: 1.3rem;
            font-weight: 300;
            font-style: italic;
            margin-bottom: 12px;
        }
        .quote-subtitle {
            font-size: 14px;
            opacity: 0.9;
            line-height: 1.6;
            margin-bottom: 24px;
            white-space: pre-line;
        }
        .cta-button {
            display: inline-block;
            background: rgba(255,255,255,0.15);
            color: white;
            padding: 10px 24px;
            border-radius: 20px;
            text-decoration: none;
            font-size: 14px;
            border: 1px solid rgba(255,255,255,0.2);
            transition: all 0.3s ease;
        }
        .cta-button:hover {
            background: rgba(255,255,255,0.25);
        }

        /* 响应式 */
        @media (max-width: 375px) {
            .hero h1 {
                font-size: 1.6rem;
            }
            .nav-link {
                padding: 10px 12px;
                font-size: 12px;
            }
            .intro-card {
                margin: -15px 12px 16px;
                padding: 16px;
            }
            .container {
                padding: 0 12px 16px;
            }
        }



/* 设置页面背景色和字体 */
body {
    background-color: #f4f4f9;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
}

/* 页面标题样式 */
h1 {
    text-align: center;
    color: #2c3e50;
    padding: 20px;
    font-size: 2em;
    background-color: #3498db;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3); /* 添加文字阴影 */
    border-radius: 5px; /* 为背景添加圆角 */
}

/* 修改“点击这里访问您的用户主页”链接的样式 */
#user-home-link {
    font-size: 16px !important;
    color: white !important;
    font-weight: bold !important;
    text-decoration: none !important;
}



/* 设置导航栏样式 */
nav ul {
    list-style-type: none;
    padding: 0;
    display: flex;
    justify-content: space-around; /* 平均分布导航选项 */
    background-color: #2c3e50;
    margin: 0;
}

nav ul li {
    margin: 0;
}

nav ul li a {
    color: white; /* 导航文字为白色 */
    text-decoration: none;
    padding: 10px 20px;
    display: block;
    font-size: 16px;
}

nav ul li a:hover {
    background-color: #3498db; /* 悬停时背景变蓝 */
    border-radius: 5px;
}

/* 页面内容容器 */
.container {
    width: 80%;
    margin: 0 auto;
    padding: 20px;
}

/* 图片容器样式 */
.images-container {
    display: flex;
    justify-content: space-around; /* 图片水平分布 */
    margin: 20px 0;
}

.images-container img {
    width: 200px; /* 统一图片宽度 */
    height: auto;
    border: 2px solid #ddd;
    border-radius: 8px;
    padding: 5px;
    box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.1); /* 图片阴影 */
}

/* 超链接样式 */
a {
    color: darkcyan;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
    color: #2c3e50; /* 悬停时深色 */
}

/* 表单样式 */
label {
    color: teal;
}

input {
    margin: 5px 0;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

/* 底部样式 */
footer {
    margin-top: 30px;
    text-align: center;
}

footer p {
    font-size: 18px;
    color: #666;
}

footer a {
    display: inline-block;
    margin-top: 10px;
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}

footer a:hover {
    background-color: #45a049;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .container {
        width: 95%;
    }

    .images-container {
        flex-direction: column;
        align-items: center;
    }

    .images-container img {
        margin-bottom: 10px;
    }

    nav ul {
        flex-direction: column;
    }

    nav ul li a {
        text-align: center;
        padding: 10px 0;
    }
}
/* 让“目前没有话题”这句话变成黑色 */
.no-topics {
    color: black;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .container {
        width: 95%;
    }

    .topic-list, .entry-list {
        padding: 10px;
    }
}

<style>
    .habit {
        padding: 10px;
        margin: 10px 0;
        border-radius: 8px;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .done {
        background-color: #b2f2bb;
    }
    .not-done {
        background-color: #ffe3e3;
    }
    .add-btn {
        display: inline-block;
        margin: 10px 0 20px 0;
        padding: 8px 16px;
        background-color: #6a5acd;
        color: white;
        text-decoration: none;
        border-radius: 8px;
        font-weight: bold;
        transition: background-color 0.3s ease;
    }
    .add-btn:hover {
        background-color: #483d8b;
    }


body {
    font-family: Arial, sans-serif;
    margin: 40px;
    background-color: #f9f9f9;
}

h2 {
    color: #333;
}

form {
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    max-width: 400px;
}

button {
    background-color: #007bff;
    color: white;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
}

a {
    color: #007bff;
    text-decoration: none;
}