:root {
    --wood: #6E5B4C;
    /* 木刻主色 */
    --ink: #3A2E28;
    /* 版画墨色 */
    --paper: #F5F1E8;
    /* 宣纸底色 */
    --mountain: #7A9D96;
    /* 重庆山色 */
    --accent: #D4A373;
    /* 点缀色 */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "华文宋体", "SimSun", serif;
    background: var(--paper);
    color: var(--ink);
    line-height: 1.8;
    background-image: url(../img/背景/111.png);
    background-size: 100%;
    /* 大图 */
}

/* 导航栏优化 */
.nav-bar,
.nav-bar1 {
    background: rgba(142, 140, 140, 0.5);
    /* 透明黑背景 */
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    /* 底部细边框 */
    padding: 0.95rem 5%;
    position: fixed;
    width: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
}

.nav-bar {
    top: 0;
    justify-content: space-between;
}

.nav-bar1 {
    top: 77px;
    justify-content: center;
    justify-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo-text {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--paper);
    line-height: 1.3;
    /* 调整整体行高 */
}

.logo-en {
    font-size: 0.9rem;
    /* 英文缩小到原字号的75% */
    font-weight: normal;
    /* 去除加粗 */
    display: block;
    /* 确保换行生效 */
    margin-top: 0.2rem;
    /* 增加中英文间距 */
    letter-spacing: 0.5px;
    /* 适当字母间距 */
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: rgba(255, 255, 255, 0.9);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: all 0.3s;
    transform: translateX(-50%);
}

.nav-link:hover {
    color: var(--accent);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.nav-link:hover::after {
    width: 80%;
}

.nav-link2 {
    color: var(--paper);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    position: absolute;
    display: none;
}

.nav-link2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: all 0.3s;
    transform: translateX(-50%);
}

.nav-link2:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.nav-link2:hover::after {
    width: 80%;
}

.nav-link3 {
    color: var(--paper);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
}

.nav-link3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: all 0.3s;
    transform: translateX(-50%);
}

.nav-link3:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.nav-link3:hover::after {
    width: 80%;
}

.nav-link3:hover .nav-link2 {
    display: block;
}

.menu-toggle {
    display: none;
    color: var(--paper);
    font-size: 1.5rem;
    cursor: pointer;
}

/* 统一导航链接颜色 */
.nav-bar .nav-link,
.nav-bar1 .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    /* 强制统一颜色 */
    opacity: 0.9;
    /* 统一透明度 */
}

/* 主视觉区优化 */
.hero {
    height: 100vh;

    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0));
    z-index: 1;
}

/* 下拉菜单适配 */

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1000px;
    margin-left: 5%;
    color: var(--paper);
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 300;
    letter-spacing: 2px;
}

.hero-content p {
    font-size: 1.2rem;

    height: 3rem;
}

.hero-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: var(--accent);
    color: var(--ink);
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(212, 163, 115, 0.3);
}

.hero-btn:hover {
    background: #c2946a;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(212, 163, 115, 0.4);
}


/* 智能助手优化 */
.chatbot {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
}

.chat-icon {
    background: var(--wood);
    width: 150px;
    height: 150px;
    border-radius: 20%;
    cursor: pointer;
    box-shadow: 3px 3px 15px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    color: #cacaca;
}

.chat-icon:hover {
    transform: scale(1.1);
    background: var(--ink);
}

.chat-window {
    background: white;
    width: max(50vw, 350px);
    height: 0;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    position: absolute;
    bottom: 70px;
    right: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}
.chat-window.active {
    height: 70vh;
}

.chat-header {
    background: var(--wood);
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header h3 {
    font-size: 1.2rem;
}

.close-chat {
    cursor: pointer;
    font-size: 1.2rem;
}

.chat-body {
    height: calc(100% - 125px);
    padding: 1rem;
    overflow-y: auto;
}

.message {
    margin-bottom: 1rem;
    display: flex;
}

.user-message {
    justify-content: flex-end;
}

.message-content {
    max-width: 70%;
    padding: 0.8rem;
    border-radius: 15px;
    font-size: 0.95rem;
    white-space: pre-line;
}

.user-message .message-content {
    background: #e9ecef;
    border-bottom-right-radius: 0;
}

.bot-message .message-content {
    background: var(--paper);
    border-bottom-left-radius: 0;
}
.message-content {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* 标题 */
.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4 {
    margin: 0.6em 0 0.3em;
    font-weight: bold;
    line-height: 1.4;
}

.message-content h1 { font-size: 1.4em; }
.message-content h2 { font-size: 1.3em; }
.message-content h3 { font-size: 1.2em; }
.message-content h4 { font-size: 1.1em; }

/* 段落 */
.message-content p {
    margin: 0.5em 0;
    margin-block-start: 0em;
    margin-block-end: -2em;

}

/* 列表 */
.message-content ul,
.message-content ol {
    margin: 0.5em 0;
    padding-left: 1.5em;
    list-style: disc;
}

.message-content li {
    margin: 0.2em 0;
}

/* 引用 */
.message-content blockquote {
    margin: 0.8em 0;
    padding-left: 1em;
    border-left: 3px solid #ccc;
    color: #666;
    font-style: italic;
}

/* 代码（行内和块） */
.message-content code {
    background-color: #f5f5f5;
    padding: 2px 4px;
    font-family: Menlo, Monaco, Consolas, monospace;
    font-size: 90%;
    border-radius: 4px;
}

.message-content pre {
    background-color: #f5f5f5;
    padding: 10px;
    overflow-x: auto;
    font-family: Menlo, Monaco, Consolas, monospace;
    font-size: 13px;
    border-radius: 6px;
    margin: 1em 0;
}

/* 表格 */
.message-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.8em 0;
}

.message-content th,
.message-content td {
    border: 1px solid #ddd;
    padding: 6px 10px;
    text-align: left;
}

.message-content th {
    background-color: #f9f9f9;
    font-weight: bold;
}

/* 链接 */
.message-content a {
    color: #007bff;
    text-decoration: none;
}

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



.chat-input {
    display: flex;
    padding: 0.5rem;
    border-top: 1px solid #eee;
}

.chat-input input {
    flex: 1;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 20px;
    outline: none;
}

.send-btn {
    background: var(--wood);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-left: 0.5rem;
    cursor: pointer;
    transition: all 0.3s;
}

.send-btn:hover {
    background: var(--ink);
    transform: scale(1.1);
}

/* 底部社交优化 */
footer {
    background: var(--ink);
    color: var(--paper);
    padding: 3rem 5% 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 5rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.footer-logo img {
    height: 30px;
    margin-right: 10px;
    opacity: .7;
}

.footer-about p {
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 3rem;
    /* 第一栏图标间隔 */
}

.social-icon {
    /* 新增以下两行 */
    color: inherit;
    /* 继承父元素颜色 */
    text-decoration: none;
    /* 去除下划线 */
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.3s;
}

.icon-xhs {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.social-icon:hover {
    background: var(--accent);
    transform: translateY(-5px);
}

.footer-links h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 0.5rem;
}
.footer-links{
    padding-left: 9rem;
}

.footer-links h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--accent);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
}

.footer-links a i {
    margin-right: 8px;
    font-size: 0.8rem;
}

.footer-links a:hover {
    color: var(--accent);
    transform: translateX(5px);
}

.footer-contact p {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
}

.footer-contact i {
    margin-right: 10px;
    color: var(--accent);
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: #aaa;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--wood);
        flex-direction: column;
        align-items: center;
        padding: 1rem 0;
        gap: 1.5rem;
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: all 0.4s;
    }

    .nav-links.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }

    .hero-content {
        margin: 0 auto;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 576px) {
    .hero {
        height: 70vh;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .quick-access {
        grid-template-columns: 1fr;
    }

    .chat-window {
        width: 300px;
        height: 0;
    }

}

/* 下拉菜单样式 */
.submenu {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    width: 100%;
    background: rgba(94, 93, 93, 0.5);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 5%;
    top: 100%;
    /* 紧贴父菜单底部 */
    z-index: 1001;
    /* 确保高于其他元素 */
}

/* 显示逻辑改为JS控制 */
.submenu.active {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

/* 在home.css中添加 */
.column-intro {
    font-size: 50%;
    text-align: justify;
    margin-top: -30px;
    margin-bottom: 30px;
}



/* 在home.css中添加 */
.hero-text {
    margin: 1.5rem 0;
}

.classic-text {
    font-family: "华文宋体", "SimSun", "方正书宋", serif;
    font-size: 1.3rem;
    font-weight: 600;
    letter-spacing: 0.8px;
    line-height: 1.4;
    margin: 0.5rem 0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
    color: rgba(255, 255, 255, 0.95);
}

/* 首段首字装饰 */
.classic-text:first-child::first-letter {
    font-size: 2.2rem;
    color: var(--accent);
    float: left;
    line-height: 0.8;
    margin-right: 4px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
    .classic-text {
        font-size: 1.1rem;
        letter-spacing: 0.5px;
    }
}

/* 在home.css中修改 */
.hero-text {
    margin: 1.2rem 0;
}

.classic-text {
    font-family: "华文中宋", "STZhongsong", "SimSun", serif;
    font-size: clamp(1.1rem, 2vw, 1.4rem); /* 流体字号 */
    font-weight: 600;
    letter-spacing: 0.5px;
    white-space: nowrap; /* 禁止换行 */
    overflow: hidden;
    text-overflow: ellipsis; /* 超出显示省略号 */
    margin: 0.3rem 0;
    color: rgba(255, 255, 255, 0.96);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
    position: relative;
    display: inline-block;
    max-width: 90%;
}

/* 小屏幕自动缩放 */
@media (max-width: 1200px) {
    .classic-text {
        white-space: normal; /* 允许换行 */
        line-height: 1.3;
        max-width: 100%;
        font-size: clamp(0.9rem, 3vw, 1.2rem);
    }
    .classic-text::after {
        content: "";
        display: inline-block;
        width: 100%;
    }
}

/* 超大屏幕保证单行 */
@media (min-width: 1600px) {
    .classic-text {
        font-size: 1.3rem;
    }
}


.ai{
    max-width: 90%;
    border-radius: 20%;
}

.name{
    font-family: "华文宋体", "SimSun", serif;
    color: #000000;
    line-height: 1.8;
    font-weight: bolder;
    font-size: larger;
    text-align: center;
    background: #D4A373;
    border-radius: 10%;
}