body {
    /* 创建一个角度倾斜的七彩渐变背景，每种颜色加 50% 透明度 */
    background: linear-gradient(45deg, 
                                rgba(255, 0, 0, 0.5), /* red */
                                rgba(255, 165, 0, 0.5), /* orange */
                                rgba(255, 255, 0, 0.5), /* yellow */
                                rgba(0, 128, 0, 0.5), /* green */
                                rgba(0, 0, 255, 0.5), /* blue */
                                rgba(75, 0, 130, 0.5), /* indigo */
                                rgba(238, 130, 238, 0.5)); /* violet */
    background-attachment: fixed;
    background-size: cover;
}

.sticky-top {
    position: sticky;
    top: 0;
    z-index: 1000;  /* 确保它在页面的最顶层 */
    width: 100%; /* 确保它宽度与容器一致 */
}

.card-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

/* 设置图片容器为 Flexbox，使内容垂直和水平居中 */
.col-md-4 {
    display: flex;
    align-items: center; /* 垂直居中 */
    justify-content: center; /* 水平居中 */
    padding: 2px; /* 维持间隙 */
}

.card-img {
    display: block; /* 设置图片为块级元素 */
    margin: auto; /* 水平居中图片 */
    padding: 2px; /* 在图片周围添加10px的间隙 */
    max-width: 100%; /* 确保图片不会超出容器宽度 */
    height: auto; /* 保持图片原有比例 */
}

.bold-border {
    border: 2px solid #000000; /* 设置边框为2px粗且颜色为黑色 */
}

.button-link {
    background: none;            /* 无背景 */
    color: blue;                 /* 链接蓝色 */
    border: none;                /* 无边框 */
    padding: 0;                  /* 无内边距 */
    margin: 0;                   /* 根据需要调整外边距 */
    font: inherit;               /* 继承字体样式 */
    cursor: pointer;             /* 手型光标 */
    text-decoration: underline;  /* 下划线，模仿链接 */
}

.button-link:hover,
.button-link:focus {
    text-decoration: none;       /* 鼠标悬停和聚焦时无下划线 */
    color: darkblue;             /* 悬停时颜色加深 */
}


.header-container {
    display: flex;
    align-items: center;
    gap: 20px; /* 元素之间的间距 */
}

.header-title {
    margin-bottom: 0;
    flex-shrink: 0; /* Logo 不缩小 */
}

/* Logo 图片样式 - 防止变形 */
.header-logo {
    height: 120px;
    width: auto; /* 保持宽高比 */
    max-width: 100%; /* 防止溢出 */
    object-fit: contain; /* 保持图片比例 */
    display: block;
}

/* 搜索框容器 */
.search-container {
    flex-grow: 1; /* 搜索框占据中间剩余空间 */
    max-width: 600px; /* 最大宽度（增加 20%） */
    min-width: 240px; /* 最小宽度（增加 20%） */
}

.search-container .input-group {
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    border-radius: 25px;
    overflow: hidden;
}

.search-container .form-control {
    border: 2px solid #d4af37;
    border-right: none;
    padding: 10px 20px;
    font-size: 14px;
}

.search-container .form-control:focus {
    box-shadow: none;
    border-color: #b8860b;
}

.search-container .btn {
    border: 2px solid #d4af37;
    border-left: none;
    background: linear-gradient(to right, #ffd700, #b8860b);
    color: white;
    font-weight: bold;
    padding: 10px 20px;
    transition: all 0.3s ease;
}

.search-container .btn:hover {
    background: linear-gradient(to right, #b8860b, #ffd700);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.header-explanation {
    padding: 10px;
    background-image: linear-gradient(to right, #ffd700, #b8860b);
    border: 3px solid hsl(210.8, 73.86%, 30%);
    border-radius: 5px;
    white-space: nowrap;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    flex-shrink: 0; /* 公告不缩小 */
}


.tooltip-inner {
    text-align: left; /* 设置文本为左对齐 */
    font-size: 11px; /* 设置字号为 11px，大约等于 8 号字体 */
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 80px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: rgba(0, 123, 255, 0.8);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: rgba(0, 86, 179, 0.9);
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

/* 返回首页按钮 */
.back-to-home {
    position: fixed;
    bottom: 20px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: rgba(212, 175, 55, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    z-index: 999;
    text-decoration: none;
}

.back-to-home:hover {
    background-color: rgba(212, 175, 55, 1);
    color: white;
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

/* 快速导航 */
.quick-nav {
    position: fixed;
    top: 50%;
    right: 30px;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    padding: 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    min-width: 150px;
    z-index: 998;
}

.quick-nav-title {
    font-weight: bold;
    font-size: 16px;
    color: #333;
    margin-bottom: 10px;
    text-align: center;
    border-bottom: 2px solid #007bff;
    padding-bottom: 8px;
}

.nav-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-link-item {
    padding: 8px 12px;
    background-color: #f8f9fa;
    border-left: 3px solid #007bff;
    color: #333;
    text-decoration: none;
    border-radius: 3px;
    transition: all 0.3s ease;
    font-size: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-link-item:hover {
    background-color: #007bff;
    color: white;
    transform: translateX(-3px);
    box-shadow: 0 2px 6px rgba(0, 123, 255, 0.3);
}

.nav-count-badge {
    background-color: #28a745;
    color: white;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: bold;
    margin-left: 8px;
    min-width: 30px;
    text-align: center;
}

.nav-link-item:hover .nav-count-badge {
    background-color: rgba(255, 255, 255, 0.3);
    color: white;
}

/* 导航链接激活状态 */
.nav-link-item.active {
    background-color: rgba(33, 150, 243, 0.3);
    border-left: 4px solid #2196F3;
    font-weight: bold;
}

.nav-link-item.active .nav-count-badge {
    background-color: #2196F3;
    color: white;
}

/* 分页导航栏样式 */
.section-navigation-bar {
    position: sticky;
    top: 0;
    z-index: 999;
    margin-bottom: 20px;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 导航按钮样式 */
.section-navigation-bar button {
    transition: all 0.3s ease;
}

.section-navigation-bar button:hover:not(:disabled) {
    background: linear-gradient(135deg, #f4e5a1, #d4af37, #f4e5a1) !important;
    border-color: #f4e5a1 !important;
    transform: scale(1.08);
    box-shadow: 0 4px 15px rgba(244, 229, 161, 0.6);
}

.section-navigation-bar button:active:not(:disabled) {
    transform: scale(1.02);
    box-shadow: 0 2px 8px rgba(212, 175, 55, 0.4);
}

.section-navigation-bar button:disabled {
    opacity: 0.4 !important;
    cursor: not-allowed;
    background: linear-gradient(135deg, #666, #555, #666) !important;
    border-color: #555 !important;
    filter: grayscale(100%);
}

/* Section 切换动画 */
.section-content-fade-in {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ==================== 主页导航卡片样式 ==================== */
.section-card {
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    text-decoration: none;
    display: block;
    color: inherit;
}

.section-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    text-decoration: none;
    color: inherit;
}

.section-card .card-title {
    color: #ffff00;
    background-color: #000000;
    text-align: center;
    padding: 10px;
    margin: -1rem -1rem 1rem -1rem;
}

.section-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: linear-gradient(135deg, #d4af37, #f4e5a1, #d4af37);
    color: #000;
    font-weight: bold;
    padding: 5px 10px;
    border-radius: 20px;
    box-shadow: 0 2px 5px rgba(212, 175, 55, 0.3);
}

.thumbnail-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #1a1a1a, #2d2d2d);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #d4af37;
    font-size: 48px;
    font-weight: bold;
}

/* 响应式设计 - 在小屏幕上隐藏快速导航 */
@media (max-width: 768px) {
    .quick-nav {
        display: none;
    }
    
    .back-to-top {
        right: 20px;
        bottom: 20px;
        width: 45px;
        height: 45px;
    }
    
    .section-navigation-bar {
        font-size: 14px;
    }
    
    .section-navigation-bar button {
        font-size: 12px;
        padding: 5px 10px;
        min-width: 80px !important;
    }
}

/* 搜索结果高亮显示 */
#searchResults mark {
    background-color: #ffd700;
    color: #000;
    font-weight: bold;
    padding: 2px 4px;
    border-radius: 3px;
}

/* 搜索模态框样式 */
#searchModal .modal-dialog {
    max-width: 912px; /* 约为 Bootstrap container (1140px) 的 80% */
}

@media (max-width: 1200px) {
    #searchModal .modal-dialog {
        max-width: 80%; /* 在中等屏幕上使用百分比 */
    }
}

#searchModal .modal-content {
    border: 3px solid #d4af37; /* 金色边框 */
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

#searchModal .modal-header {
    background: linear-gradient(to right, #ffd700, #b8860b);
    color: #fff;
    border-bottom: 3px solid #b8860b;
    border-radius: 12px 12px 0 0;
    padding: 20px;
}

#searchModal .modal-title {
    font-weight: bold;
    font-size: 1.3rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

#searchModal .btn-close {
    filter: brightness(0) invert(1); /* 白色关闭按钮 */
    opacity: 0.8;
}

#searchModal .btn-close:hover {
    opacity: 1;
}

#searchModal .modal-body {
    padding: 25px;
    background-color: #f8f9fa;
}

/* 搜索结果卡片样式 */
#searchResults .card {
    transition: all 0.3s ease;
    border: 2px solid #ddd;
}

#searchResults .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    border-color: #d4af37;
}

#searchResults .card-img-top {
    border-bottom: 2px solid #f0f0f0;
}

/* ==================== 支付下载模态框样式 ==================== */
#downloadModal .modal-dialog {
    max-width: 500px; /* 适中宽度 */
}

#downloadModal .modal-content {
    border: 3px solid #d4af37; /* 金色边框 */
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

#downloadModal .modal-header {
    background: linear-gradient(to right, #ffd700, #b8860b);
    color: #fff;
    border-bottom: 3px solid #b8860b;
    border-radius: 12px 12px 0 0;
    padding: 20px;
}

#downloadModal .modal-title {
    font-weight: bold;
    font-size: 1.2rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

#downloadModal .btn-close {
    filter: brightness(0) invert(1); /* 白色关闭按钮 */
    opacity: 0.8;
}

#downloadModal .btn-close:hover {
    opacity: 1;
}

#downloadModal .modal-body {
    padding: 25px;
    background-color: #f8f9fa;
}

#downloadModal .modal-footer {
    background-color: #f8f9fa;
    border-top: 2px solid #d4af37;
    border-radius: 0 0 12px 12px;
    padding: 15px 25px;
}

/* 支付图片容器 */
#downloadModal .modal-body .d-flex {
    gap: 15px;
}

#downloadModal .modal-body img {
    border: 2px solid #d4af37;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

#downloadModal .modal-body img:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 12px rgba(212, 175, 55, 0.3);
}

/* 下载信息提示框 */
#downloadModal .alert-info {
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    border: 2px solid #2196F3;
    border-radius: 10px;
    color: #0d47a1;
}

#downloadModal .alert-info strong {
    color: #1565c0;
}

#downloadModal .alert-info a {
    color: #1976d2;
    font-weight: bold;
    text-decoration: underline;
}

#downloadModal .alert-info a:hover {
    color: #0d47a1;
}

/* 按钮样式 */
#downloadModal .btn-secondary {
    background: linear-gradient(135deg, #9e9e9e, #757575);
    border: none;
    font-weight: bold;
    transition: all 0.3s ease;
}

#downloadModal .btn-secondary:hover {
    background: linear-gradient(135deg, #757575, #616161);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

#downloadModal .btn-primary {
    background: linear-gradient(135deg, #ffd700, #b8860b);
    border: none;
    color: #000;
    font-weight: bold;
    transition: all 0.3s ease;
}

#downloadModal .btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #b8860b, #ffd700);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(212, 175, 55, 0.4);
}

#downloadModal .btn-primary:disabled {
    background: linear-gradient(135deg, #cccccc, #999999);
    color: #666;
    cursor: not-allowed;
}

/* 复制按钮样式 */
#downloadModal .btn-outline-secondary {
    border: 2px solid #d4af37;
    color: #b8860b;
    font-weight: bold;
    transition: all 0.3s ease;
}

#downloadModal .btn-outline-secondary:hover {
    background: linear-gradient(135deg, #ffd700, #b8860b);
    border-color: #ffd700;
    color: #000;
}

#downloadModal .btn-success {
    background: linear-gradient(135deg, #66bb6a, #43a047);
    border: none;
    color: #fff;
}

/* ========================================
   移动端响应式优化
   ======================================== */

/* 平板设备 (768px - 991px) */
@media (max-width: 991px) {
    /* 头部容器调整 */
    .header-container {
        flex-wrap: wrap;
        gap: 15px;
        justify-content: center;
    }
    
    .header-title {
        width: 100%;
        text-align: center;
    }
    
    /* Logo 响应式调整 */
    .header-logo {
        max-height: 200px;
        height: auto;
        max-width: 100%;
    }
    
    .search-container {
        order: 3;
        width: 100%;
        max-width: 100%;
        margin: 0 15px;
    }
    
    .header-explanation {
        order: 2;
        width: 100%;
        text-align: center;
        white-space: normal;
        font-size: 14px;
    }
    
    /* 卡片调整 */
    .card {
        margin-bottom: 15px !important;
    }
    
    .card-body {
        padding: 15px;
    }
    
    /* 导航栏调整 */
    .section-navigation-bar {
        padding: 10px 5px;
    }
    
    .section-navigation-bar button {
        font-size: 13px;
        padding: 6px 12px;
    }
}

/* 手机设备 (小于 768px) */
@media (max-width: 768px) {
    /* 头部优化 */
    .header-container {
        padding: 10px 5px;
    }
    
    /* 移动端隐藏 Logo，节省屏幕空间 */
    .header-title {
        display: none;
    }
    
    .search-container {
        margin: 0 10px;
    }
    
    .search-container .form-control {
        padding: 8px 15px;
        font-size: 13px;
    }
    
    .search-container .btn {
        padding: 8px 15px;
        font-size: 13px;
    }
    
    .search-container .btn svg {
        width: 14px;
        height: 14px;
    }
    
    .header-explanation {
        padding: 8px;
        font-size: 12px;
    }
    
    /* 容器优化 */
    .container {
        padding-left: 10px;
        padding-right: 10px;
    }
    
    /* 卡片优化 */
    .card {
        margin-bottom: 12px !important;
    }
    
    .card-body {
        padding: 12px;
    }
    
    .card-title {
        font-size: 16px;
        margin-bottom: 8px;
    }
    
    .card-text {
        font-size: 13px;
        line-height: 1.4;
    }
    
    .list-group-item {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    /* 按钮优化 */
    .btn {
        font-size: 13px;
        padding: 6px 12px;
    }
    
    .btn-group .btn {
        font-size: 12px;
        padding: 5px 10px;
    }
    
    /* 徽章优化 */
    .badge {
        font-size: 11px;
        padding: 3px 8px;
    }
    
    /* 模态框优化 */
    #searchModal .modal-dialog,
    #downloadModal .modal-dialog {
        margin: 10px;
        max-width: calc(100% - 20px);
    }
    
    #searchModal .modal-body,
    #downloadModal .modal-body {
        padding: 15px;
    }
    
    #searchModal .modal-header,
    #downloadModal .modal-header {
        padding: 12px 15px;
    }
    
    #searchModal .modal-title,
    #downloadModal .modal-title {
        font-size: 18px;
    }
    
    /* 搜索结果卡片 */
    #searchResults .card {
        margin-bottom: 10px;
    }
    
    #searchResults .card-body {
        padding: 10px;
    }
    
    #searchResults .card-title {
        font-size: 15px;
    }
    
    #searchResults .card-text {
        font-size: 12px;
    }
    
    /* 支付图片优化 */
    #downloadModal .modal-body img {
        max-width: 100%;
        height: auto;
        margin: 5px;
    }
    
    #downloadModal .modal-body .d-flex {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    /* 导航栏优化 */
    .section-navigation-bar button {
        font-size: 11px;
        padding: 4px 8px;
        min-width: 60px !important;
    }
    
    /* 回到顶部按钮 */
    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: 15px;
        right: 15px;
        font-size: 18px;
    }
}

/* 小手机设备 (小于 576px) */
@media (max-width: 576px) {
    /* 头部进一步优化 */
    .header-logo {
        max-height: 120px;
        height: auto;
    }
    
    .search-container {
        min-width: auto;
        margin: 0 5px;
    }
    
    .search-container .form-control {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .search-container .btn {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    /* 小屏幕隐藏搜索按钮文字，只保留图标 */
    .search-container .btn {
        font-size: 0;
    }
    
    .search-container .btn svg {
        font-size: initial;
        width: 16px;
        height: 16px;
    }
    
    .header-explanation {
        padding: 6px;
        font-size: 11px;
    }
    
    /* 容器进一步优化 */
    .container {
        padding-left: 5px;
        padding-right: 5px;
    }
    
    /* 卡片进一步优化 */
    .card {
        margin-bottom: 10px !important;
        border-width: 1px;
    }
    
    .card-body {
        padding: 10px;
    }
    
    .card-title {
        font-size: 15px;
        margin-bottom: 6px;
    }
    
    .card-text {
        font-size: 12px;
    }
    
    .list-group-item {
        padding: 6px 10px;
        font-size: 12px;
    }
    
    /* 按钮进一步优化 */
    .btn {
        font-size: 12px;
        padding: 5px 10px;
    }
    
    .btn-group {
        width: 100%;
        flex-wrap: wrap;
    }
    
    .btn-group .btn {
        flex: 1;
        font-size: 11px;
        padding: 4px 6px;
    }
    
    /* 模态框进一步优化 */
    #searchModal .modal-dialog,
    #downloadModal .modal-dialog {
        margin: 5px;
        max-width: calc(100% - 10px);
    }
    
    #searchModal .modal-body,
    #downloadModal .modal-body {
        padding: 10px;
    }
    
    #searchModal .modal-header,
    #downloadModal .modal-header {
        padding: 10px;
    }
    
    #searchModal .modal-title,
    #downloadModal .modal-title {
        font-size: 16px;
    }
    
    /* 支付模态框按钮 */
    #downloadModal .modal-footer {
        padding: 10px;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    #downloadModal .modal-footer .btn {
        flex: 1;
        min-width: calc(50% - 4px);
    }
    
    /* 导航栏进一步优化 */
    .section-navigation-bar {
        font-size: 12px;
        padding: 8px 2px;
    }
    
    .section-navigation-bar button {
        font-size: 10px;
        padding: 3px 6px;
        min-width: 50px !important;
        margin: 2px;
    }
    
    /* 回到顶部按钮 */
    .back-to-top {
        width: 35px;
        height: 35px;
        bottom: 10px;
        right: 10px;
        font-size: 16px;
    }
    
    /* 表格响应式 */
    table {
        font-size: 12px;
    }
    
    table th,
    table td {
        padding: 6px;
    }
}

/* 横屏模式优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .header-container {
        padding: 5px;
    }
    
    /* Logo 横屏模式 */
    .header-logo {
        max-height: 40px;
        height: auto;
        width: auto;
    }
    
    .search-container {
        max-width: 400px;
    }
    
    .back-to-top {
        width: 35px;
        height: 35px;
        bottom: 10px;
        right: 10px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    /* 增大可点击区域 */
    .btn,
    button,
    a {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* 优化卡片点击 */
    .card {
        cursor: pointer;
    }
    
    /* 移除hover效果，使用active状态 */
    .btn:active,
    .card:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }
}