@charset "UTF-8";
/*开始+通用CSS*/
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box; /* 新增：统一盒模型计算方式 */
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #333;
    background-color: #eeeeee;
}

a:link {
    text-decoration-line: none;
    color: #333;
}

a:hover {
    color: #973121;
}

h1 {
    width: 100%;
    text-align: center;
    padding-top: 1rem; /* 增加内边距，在小屏幕更友好 */
    font-size: clamp(1.8rem, 5vw, 2.5rem); /* 响应式字体大小 */
    color: #373737;
}


.tijiao {
    width: 10rem;
    height: 4rem;
    border-radius: 5px;
    margin: 0.5rem auto;
}

.div_center {
    width: 100%;
    max-width: 75rem;
    text-align: center
}
.back_one{margin:0 auto;}
p {
    margin: 1rem auto;
}

/*结束+通用CSS*/

/*开始+验证码*/
#guestbook #captcha{
    width:8rem;
}
.captcha-container {
    margin: 15px 0;
}

#captcha-img {
    vertical-align: middle;
    cursor: pointer;
    border: 1px solid #ddd;
    margin-left: 10px;
}

/*结束+验证码*/


/*开始+导航栏*/
#top_bg{width: 100%;text-align: center;border-bottom: #c1c1c1 1px solid}

#top_bg #top_75{
    width:100%;
    max-width:75rem;
    margin:0 auto;
    /* 设置容器为flex布局 */
    display: flex;
    /* 在主轴上均匀分配空间 */
    justify-content: space-between;
    /* 垂直居中 */
    align-items: center;
    /* 可选：添加背景和内边距 */
    /*background-color: #f5f5f5;*/
    padding: 10px 20px;
}

#top_bg #top_75 #nav_go {

    width: 100%;
    max-width: 60rem;
    /*background-color: #b12e2e;*/
    text-align: left;
    background-image: url("logo.gif");
    background-repeat: no-repeat;
    background-position: left center;
    background-size: contain;
    resize: both;
    padding-left: 2rem;

}


#top_bg #top_75 #nav_go {
    /* 左侧导航不需要特殊设置 */
    max-width: 10rem;
}

#top_bg #top_75 #denglu {
    /* 右侧登录不需要特殊设置 */
    background-image: url("touxiang.png");
    background-repeat: no-repeat;
    background-position: left center;
    background-size: contain;
    resize: both;
    padding-left: 2rem;
}

/* 可选：链接样式 */
#nav_go a {
    margin-right: 5px; /* 链接间距 */
    text-decoration: none;
    color: #333;
}

#top_bg #denglu a {
    text-decoration: none;
    color: #333;
}

/* 可选：添加分隔线 */
#nav_go a:not(:last-child)::after {
    content: " | ";
    margin-left: 1px;
}
/*结束+导航栏*/



#main {
    height: auto;
    padding: 0.2rem 3%; /* 调整内边距 */
    width: 100%;
    max-width: 75rem;
    margin: 0 auto;
}


#main #net_address {
    margin: 0 auto;
    text-align: center;
}

#main .lanmu {
    border: 1px solid #1F60A8;
    margin-bottom: 1.5rem; /* 增加模块间距 */
    border-radius: 4px; /* 轻微圆角更现代 */
    overflow: hidden; /* 配合圆角隐藏内部溢出 */
}

#main .lanmu h3 {
    background-color: #1F60A8;
    color: #fff;
    padding: 0.5rem 1rem; /* 调整内边距 */
    font-size: clamp(1rem, 3vw, 1.2rem);
}

#main .lanmu ol {
    margin: 0.5rem 0 0.5rem 2rem;
    padding: 0.5rem 1rem;
}

#main .lanmu ol li {
    line-height: 1.8rem;
    margin-left: auto;
    font-size: clamp(0.9rem, 2.5vw, 1rem);
}

#footer {
    margin: 2rem auto;
    text-align: center;
    font-size: clamp(0.875rem, 2vw, 1rem);
    padding: 0 1rem;
}



.error-message {
    background-color: #ffebee;
    color: #b71c1c;
    padding: 10px;
    border: 1px solid #ffcdd2;
    border-radius: 4px;
    margin-bottom: 15px;
    text-align: center;
}

/*结束+登录*/

/* view.php的CSS设置 */
.article-container {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 1rem; /* 调整内边距 */
    margin-top: 20px;
    width: 100%;
}

.article-title {
    font-size: clamp(1.5rem, 4vw, 2.2rem); /* 响应式标题 */
    margin-bottom: 15px;
    color: #2c3e50;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
}

.article-content {
    font-size: clamp(1rem, 2.5vw, 1.1rem);
    line-height: 1.8;
    color: #1c1c1c;
}

.article-content p {
    margin: 1rem auto;
}

.article-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px auto;
}

.back-link {
    /*display: inline-block;*/
    margin-top: 20px;
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
}

.back-link:hover {
    text-decoration: underline;
}

.option-list {
    width: 100%;
    text-align: center;
    padding: 0 1rem;
}

.option-item#closeWindowOption {
    /*display: inline-block;*/
    padding: 10px 20px;
    margin: 8px 0;
    border-radius: 6px;
    background-color: #e53e3e;
    color: #ffffff;
    font-family: 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: clamp(0.875rem, 2vw, 14px);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    user-select: none;
    border: none;
    outline: none;
    transition: all 0.2s ease-in-out;
    box-shadow: 0 2px 4px rgba(229, 62, 62, 0.2);
}

.option-item#closeWindowOption:hover {
    background-color: #c53030;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(229, 62, 62, 0.3);
    filter: brightness(1.05);
}

.option-item#closeWindowOption:active {
    background-color: #9b2c2c;
    transform: translateY(1px);
    box-shadow: 0 1px 2px rgba(229, 62, 62, 0.2);
    filter: brightness(0.95);
}

.option-item#closeWindowOption:focus {
    outline: 2px solid rgba(229, 62, 62, 0.5);
    outline-offset: 2px;
}

/*结束+正文*/

/*开始+留言板*/
#guestbook {
    margin: 0.5rem;
    font-size: 1rem;
}

#guestbook input[type=text] {
    width: 100%;
    max-width: 16rem;
    height: 3rem;
    padding: 0.2rem;
    font-size: 1.3rem;
}

#guestbook #g_content {
    width: 100%;
    max-width: 70rem;
    padding: 0.2rem;
    font-size: 1.1rem;
}


/*结束+留言板*/


/* 媒体查询：平板设备 (768px 以下) */
@media (max-width: 768px) {
    #top_bg #nav_go {
        margin: 0.5rem;
    }

    #main {
        padding: 2% 4%;
    }

    .lanmu {
        margin-bottom: 1rem;
    }

    #denglu {
        text-align: right;
        border-radius: 4px; /* 轻微圆角更现代 */
        overflow: hidden; /* 配合圆角隐藏内部溢出 */
        /* 添加这行重置背景图片 */
        /*background-image: none !important;
        padding-left: 0;*/
        background-size:50%;

    }
    #captcha{
        width:5rem;
    }
    .article-container {
        padding: 0.8rem;
    }

    .article-title {
        font-size: 1.8rem;
    }
}

/* 媒体查询：手机设备 (480px 以下) */
@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
        padding: 0.8rem 0;
    }

    #main .lanmu h3 {
        padding: 0.4rem 0.8rem;
        font-size: 1rem;
    }

    #main .lanmu ol {
        margin-left: 1.2rem; /* 减少列表左缩进 */
        padding: 0.5rem;
    }

    #main .lanmu ol li {
        line-height: 1.6rem;
        font-size: 0.9rem;
    }

    .option-item#closeWindowOption {
        padding: 8px 16px;
        font-size: 0.8rem;
    }
}