/* 全局重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }
        
        /* 变量定义 */
        :root {
            --primary: #5c7cfa;
            --secondary: #4263eb;
            --accent: #ea4335;
            --yellow: #fbbc05;
            --light: #f8f9fa;
            --dark: #202124;
            --nature: #0b8043;
            --humanities: #8e24aa;
            --arts: #e67c73;
            --summary: #4285f4;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --page-width: 1400px;
        }
        
        /* 基础样式 */
        body {
            background-color: #f5f7fa;
            color: var(--dark);
            line-height: 1.6;
            min-height: 100vh;
            /* 移除顶部padding */
        }
        
        /* 整合后的导航栏样式 - 使用1号文件的导航样式 */
        .detailed-navbar {
            background-color: #fdfdfe;
            width: 100%;
            position: fixed;
            top: 0;
            left: 0;
            z-index: 1000;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }
        
        .detailed-nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 40px;
            min-height: 100px;
            max-width: var(--page-width);
            margin: 0 auto;
            width: 100%;
        }
        
        /* Logo 区域 */
        .detailed-logo {
            display: flex;
            align-items: center;
            gap: 18px;
            text-decoration: none;
            flex-shrink: 0;
        }
        
        .detailed-logo-icon {
            width: 60px;
            height: 60px;
            background: #f5f7ff;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            box-shadow: 0 5px 15px rgba(92, 124, 250, 0.15);
            transition: all 0.3s ease;
            overflow: hidden;
        }
        
        .detailed-logo-icon img {
            width: 100%;
            height: 100%;
            object-fit: contain;
            border-radius: 12px;
        }
        
        .detailed-logo:hover .detailed-logo-icon {
            transform: rotate(10deg) scale(1.05);
            box-shadow: 0 8px 20px rgba(92, 124, 250, 0.25);
        }
        
        .detailed-logo-text {
            font-size: 32px;
            font-weight: 800;
            color: #4a5568;
            letter-spacing: 0.8px;
            white-space: nowrap;
        }
        
        .detailed-logo-text span {
            background: linear-gradient(90deg, #5c7cfa, #4263eb);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        /* 导航菜单 */
        .detailed-nav-menu {
            display: flex;
            list-style: none;
            gap: 8px;
            flex-wrap: nowrap;
            overflow-x: auto;
            padding: 5px 0;
            -ms-overflow-style: none;  /* IE and Edge */
            scrollbar-width: none;  /* Firefox */
        }
        
        .detailed-nav-menu::-webkit-scrollbar {
            display: none; /* Hide scrollbar for Chrome, Safari and Opera */
        }
        
        .detailed-nav-item {
            position: relative;
            padding: 5px 0;
            flex-shrink: 0;
        }
        
        .detailed-nav-link {
            text-decoration: none;
            color: #4a5568;
            font-weight: 700;
            font-size: 18px;
            transition: all 0.3s ease;
            position: relative;
            padding: 15px 20px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            white-space: nowrap;
        }
        
        /* 图标样式 */
        .detailed-nav-icon {
            display: inline-block;
            width: 24px;
            text-align: center;
            margin-right: 10px;
            font-size: 18px;
            color: #5c7cfa;
            transition: color 0.3s ease;
        }
        
        .detailed-nav-link:hover .detailed-nav-icon {
            color: currentColor;
        }
        
        .detailed-nav-item.detailed-active .detailed-nav-link .detailed-nav-icon {
            color: white;
        }
        
        /* 选中项样式 */
        .detailed-nav-item.detailed-active .detailed-nav-link {
            background: linear-gradient(135deg, #5c7cfa 0%, #4263eb 100%);
            color: white !important;
            box-shadow: 0 5px 15px rgba(92, 124, 250, 0.25);
        }
        
        .detailed-nav-link:hover {
            color: #5c7cfa;
        }
        
        .detailed-nav-link::after {
            content: '';
            position: absolute;
            bottom: 10px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: linear-gradient(90deg, #5c7cfa, #4263eb);
            border-radius: 2px;
            transition: width 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
        }
        
        .detailed-nav-link:hover::after {
            width: 60%;
        }
        
        /* 汉堡菜单 - 移到左边 */
        .detailed-hamburger {
            display: none;
            cursor: pointer;
            width: 40px;
            height: 30px;
            position: relative;
            z-index: 100;
            order: -1; /* 将汉堡菜单移到最左边 */
            margin-right: 15px; /* 增加右边距 */
        }
        
        .detailed-hamburger span {
            display: block;
            position: absolute;
            height: 4px;
            width: 100%;
            background: #5c7cfa;
            border-radius: 4px;
            opacity: 1;
            left: 0;
            transform: rotate(0deg);
            transition: all 0.3s ease;
        }
        
        .detailed-hamburger span:nth-child(1) {
            top: 0;
        }
        
        .detailed-hamburger span:nth-child(2) {
            top: 13px;
            width: 85%;
        }
        
        .detailed-hamburger span:nth-child(3) {
            top: 26px;
        }
        
        /* 汉堡菜单激活状态 */
        .detailed-hamburger.detailed-active span {
            background: #4263eb;
        }
        
        .detailed-hamburger.detailed-active span:nth-child(1) {
            top: 13px;
            transform: rotate(135deg);
        }
        
        .detailed-hamburger.detailed-active span:nth-child(2) {
            opacity: 0;
            left: -30px;
        }
        
        .detailed-hamburger.detailed-active span:nth-child(3) {
            top: 13px;
            transform: rotate(-135deg);
        }
        
        /* 移动端菜单样式 */
        @media (max-width: 992px) {
            .detailed-nav-container {
                padding: 0 30px;
                justify-content: flex-start;
                position: relative;
                min-height: 80px;
            }
            
            .detailed-hamburger {
                display: block;
                margin-right: 15px;
                order: -1; /* 确保汉堡菜单在左侧 */
            }
            
            .detailed-nav-menu {
                position: absolute;
                top: 100%; 
                left: 0;
                width: 100%;
                flex-direction: column;
                background: #fdfdfe;
                padding: 15px 0;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
                transform: translateY(-100%);
                transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), 
                            opacity 0.4s ease;
                z-index: 99;
                border-radius: 0 0 15px 15px;
                gap: 0;
                opacity: 0;
                visibility: hidden;
                border-top: 1px solid rgba(92, 124, 250, 0.15);
                overflow: visible;
            }
            
            .detailed-nav-menu.detailed-active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            
            .detailed-nav-item {
                width: 100%;
                text-align: center;
                padding: 0;
                border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            }
            
            .detailed-nav-item:last-child {
                border-bottom: none;
            }
            
            .detailed-nav-link {
                padding: 18px 25px;
                margin: 0 20px;
                border-radius: 8px;
                transition: all 0.2s ease;
                justify-content: center;
            }
            
            .detailed-nav-link:hover {
                background: rgba(92, 124, 250, 0.08);
            }
            
            .detailed-nav-link::after {
                display: none;
            }
            
            .detailed-nav-item.detailed-active .detailed-nav-link {
                margin: 0 20px;
                box-shadow: 0 4px 12px rgba(92, 124, 250, 0.2);
            }
            
            /* 移动端图标显示优化 */
            .detailed-nav-icon {
                display: inline-block;
                margin-right: 12px;
                font-size: 20px;
            }
            
            .detailed-nav-link:active {
                transform: scale(0.96);
            }
            
            /* 调整body的padding-top */
            body {
                padding-top: 0; /* 移除移动端顶部空白 */
            }
            
            .detailed-logo {
                position: absolute;
                left: 50%;
                top: 50%;
                transform: translate(-50%, -50%);
                margin: 0;
            }
            
            .detailed-logo-icon {
                width: 50px;
                height: 50px;
            }
            
            .detailed-logo-text {
                font-size: 28px;
            }
        }
        
        /* 修复移动端菜单高度问题 */
        @media (max-width: 992px) {
            .detailed-navbar {
                overflow: visible;
                transition: border-radius 0.3s ease;
            }
            
            .detailed-navbar.detailed-menu-expanded {
                border-bottom-left-radius: 0;
                border-bottom-right-radius: 0;
            }
        }

        /* 页面内容样式 - 保持2号文件原有样式 */
        .singup-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            padding: 2rem 0;
            text-align: center;
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
            margin-top: 100px; /* 添加顶部间距以避开导航栏 */
        }
        
        .singup-header::before {
            content: "";
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0) 70%);
            z-index: 0;
        }
        
        .singup-header-content {
            position: relative;
            z-index: 1;
            max-width: var(--page-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .singup-h1 {
            font-size: 2.8rem;
            margin-bottom: 0.8rem;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
            font-weight: 600;
        }
        
        .singup-subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
            max-width: 700px;
            margin: 0 auto 1.5rem;
        }
        
        .singup-container {
            max-width: var(--page-width);
            margin: 2.5rem auto;
            padding: 0 20px;
        }
        
        /* 筛选区域 */
        .singup-filter-area {
            background: white;
            border-radius: 12px;
            padding: 20px;
            margin-bottom: 2rem;
            box-shadow: var(--shadow);
            position: relative;
        }
        
        .singup-filter-tabs {
            display: flex;
            border-bottom: 1px solid #eee;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        
        .singup-filter-tab {
            padding: 12px 24px;
            cursor: pointer;
            font-weight: 500;
            color: #666;
            border-bottom: 3px solid transparent;
            transition: var(--transition);
            flex-grow: 1;
            text-align: center;
            position: relative;
        }
        
        .singup-filter-tab.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        
        .singup-filter-tab:hover {
            color: var(--primary);
        }
        
        .singup-filter-options {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        
        .singup-filter-option {
            padding: 10px 20px;
            border-radius: 20px;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
            background: #f5f5f5;
            color: #555;
            flex-shrink: 0;
        }
        
        .singup-filter-option.active {
            color: white;
        }
        
        .singup-filter-option.summary.active {
            background: var(--summary);
        }
        
        .singup-filter-option.nature.active {
            background: var(--nature);
        }
        
        .singup-filter-option.humanities.active {
            background: var(--humanities);
        }
        
        .singup-filter-option.arts.active {
            background: var(--arts);
        }
        
        .singup-filter-option i {
            font-size: 0.9rem;
        }
        
        /* 推荐板块 */
        .singup-highlight {
            background: linear-gradient(135deg, #f6e58d 0%, #ffbe76 100%);
            padding: 30px;
            border-radius: 12px;
            margin: 2rem 0;
            color: #333;
            box-shadow: var(--shadow);
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
        }
        
        .singup-highlight::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, rgba(255,255,255,0) 70%);
            z-index: 0;
        }
        
        .singup-highlight-content {
            flex: 1;
            position: relative;
            z-index: 1;
        }
        
        .singup-highlight h2 {
            font-size: 1.8rem;
            margin-bottom: 1rem;
            color: #333;
            font-weight: 600;
        }
        
        .singup-highlight p {
            margin-bottom: 1.5rem;
            max-width: 600px;
            font-size: 1.1rem;
            line-height: 1.7;
        }
        
        .singup-highlight-btn {
            background: var(--accent);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            box-shadow: 0 4px 8px rgba(234, 67, 53, 0.3);
        }
        
        .singup-highlight-btn:hover {
            background: #d33426;
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(234, 67, 53, 0.4);
        }
        
        .singup-highlight-image {
            flex: 1;
            text-align: center;
            position: relative;
            z-index: 1;
        }
        
        .singup-highlight-image i {
            font-size: 8rem;
            color: rgba(234, 67, 53, 0.15);
        }
        
        /* 竞赛卡片 */
        .singup-competition-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 25px;
            margin-top: 1rem;
        }
        
        .singup-competition-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        
        .singup-competition-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
        }
        
        .singup-card-header {
            padding: 20px 20px 10px;
            border-bottom: none;
        }
        
        .singup-card-category {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            margin-bottom: 12px;
            font-weight: 500;
        }
        
        .summary-category {
            background: rgba(66, 133, 244, 0.1);
            color: var(--summary);
            border: 1px solid rgba(66, 133, 244, 0.2);
        }
        
        .nature-category {
            background: rgba(11, 128, 67, 0.1);
            color: var(--nature);
            border: 1px solid rgba(11, 128, 67, 0.2);
        }
        
        .humanities-category {
            background: rgba(142, 36, 170, 0.1);
            color: var(--humanities);
            border: 1px solid rgba(142, 36, 170, 0.2);
        }
        
        .arts-category {
            background: rgba(230, 124, 115, 0.1);
            color: var(--arts);
            border: 1px solid rgba(230, 124, 115, 0.2);
        }
        
        .singup-card-title {
            font-size: 1.3rem;
            margin-bottom: 20px;
            color: var(--dark);
            font-weight: 600;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            text-overflow: ellipsis;
            padding-bottom: 15px;
            border-bottom: 1px solid #eee;
            white-space: nowrap;
            overflow: hidden;
        }
        
        .singup-card-body {
            padding: 0 20px 15px;
            flex-grow: 1;
        }
        
        .singup-card-info {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-bottom: 15px;
        }
        
        .singup-info-item {
            display: flex;
            align-items: flex-start;
            color: #555;
        }
        
        .singup-info-item i {
            margin-right: 12px;
            margin-top: 4px;
            min-width: 20px;
            font-size: 1.1rem;
            width: 24px;
            text-align: center;
        }
        
        .summary-item i {
            color: var(--summary);
        }
        
        .nature-item i {
            color: var(--nature);
        }
        
        .humanities-item i {
            color: var(--humanities);
        }
        
        .arts-item i {
            color: var(--arts);
        }
        
        .singup-info-text {
            flex: 1;
        }
        
        .singup-info-text strong {
            color: #333;
            font-weight: 500;
            display: block;
            margin-bottom: 4px;
        }
        
        .singup-card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
            background: #f9f9f9;
            border-top: 1px solid #eee;
        }
        
        .singup-time-badge {
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        
        .singup-time-badge.enrolling {
            background: rgba(52, 168, 83, 0.1);
            color: var(--secondary);
        }
        
        .singup-time-badge.closed {
            background: rgba(234, 67, 53, 0.1);
            color: var(--accent);
        }
        
        .singup-time-badge.upcoming {
            background: rgba(251, 188, 5, 0.15);
            color: #e6a700;
        }
        
        .singup-btn-details {
            background: var(--primary);
            color: white;
            border: none;
            padding: 8px 20px;
            border-radius: 5px;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            white-space: nowrap;
        }
        
        .singup-btn-details:hover {
            background: #3367d6;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        
        .singup-footer {
            text-align: center;
            margin-top: 3rem;
            padding: 20px;
            color: #777;
            font-size: 0.9rem;
        }
        
        /* 回到顶部按钮 */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            border: none;
            z-index: 999;
            transition: all 0.3s ease;
            opacity: 1;
            visibility: hidden;
            transform: translateY(20px);
        }
        
        .back-to-top.visible {
            visibility: visible;
            transform: translateY(0);
        }
        
        .back-to-top:hover {
            background: linear-gradient(135deg, #5c7cfa 0%, #4263eb 100%);
            box-shadow: 0 6px 15px rgba(0,0,0,0.2);
            transform: translateY(-3px);
        }
        
        /* 移动端优化 */
        @media (max-width: 992px) {
            .detailed-nav-container {
                padding: 0 30px;
            }
            
            .detailed-hamburger {
                display: block;
            }
            
            /* 页面内容移动端优化 */
            .singup-filter-area {
                padding: 15px;
            }
            
            .singup-filter-tab {
                padding: 10px 15px;
                font-size: 0.95rem;
            }
            
            .singup-filter-options {
                justify-content: flex-start;
                flex-wrap: wrap;
                overflow-x: visible;
            }
            
            .singup-filter-option {
                flex-basis: calc(50% - 5px);
                justify-content: center;
                text-align: center;
            }
            
            .singup-h1 {
                font-size: 2.2rem;
            }
            
            .singup-subtitle {
                font-size: 1rem;
                padding: 0 15px;
            }
            
            .singup-competition-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            
            .singup-highlight {
                flex-direction: column;
                text-align: center;
                padding: 25px 20px;
            }
            
            .singup-highlight-content {
                text-align: center;
                display: flex;
                flex-direction: column;
                align-items: center;
            }
            
            .singup-highlight-image {
                margin-top: 20px;
            }
            
            .singup-highlight-image i {
                font-size: 6rem;
            }
            
            .singup-filter-tabs {
                flex-wrap: wrap;
                border-bottom: none;
                gap: 5px;
            }
            
            .singup-filter-tab {
                border-bottom: none;
                border-radius: 20px;
                margin-bottom: 5px;
                background: #f5f5f5;
                padding: 10px 15px;
                font-size: 0.9rem;
            }
            
            .singup-filter-tab.active {
                background: var(--primary);
                color: white;
            }
            
            .singup-card-title {
                font-size: 1.2rem;
                min-height: auto;
                margin-bottom: 10px;
                -webkit-line-clamp: 1;
            }
            
            .singup-card-header {
                padding: 15px 15px 10px;
            }
            
            .singup-card-body {
                padding: 0 15px 10px;
            }
            
            .singup-card-footer {
                padding: 12px 15px;
            }
            
            .singup-time-badge {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            
            .singup-btn-details {
                padding: 6px 15px;
                font-size: 0.9rem;
            }
            
            .singup-filter-options {
                flex-wrap: nowrap;
                overflow-x: auto;
                padding-bottom: 10px;
                justify-content: flex-start;
                -webkit-overflow-scrolling: touch;
            }
            
            .singup-filter-option {
                flex-basis: auto;
                flex-shrink: 0;
                padding: 10px 15px;
                margin-bottom: 0;
                white-space: nowrap;
            }
            
            .singup-filter-options::-webkit-scrollbar {
                display: none;
            }
            
            /* 回到顶部按钮在移动端调整大小 */
            .back-to-top {
                width: 45px;
                height: 45px;
                font-size: 18px;
                bottom: 20px;
                right: 20px;
            }

            /* 移动端顶部内容间距调整 */
            .singup-header {
                margin-top: 80px; /* 与导航栏高度匹配 */
                padding: 1.5rem 0; /* 减少内边距 */
            }
            
            .singup-h1 {
                font-size: 1.8rem; /* 适当减小标题大小 */
            }
        }
        
        @media (max-width: 576px) {
            .detailed-nav-container {
                min-height: 80px;
            }
            
            .detailed-logo-icon {
                width: 50px;
                height: 50px;
                font-size: 24px;
            }
            
            .detailed-logo-text {
                font-size: 26px;
            }
            
            .singup-h1 {
                font-size: 1.8rem;
                padding: 0 10px;
            }
            
            .singup-filter-tab {
                padding: 8px 12px;
                font-size: 0.85rem;
                flex-basis: calc(50% - 5px);
            }
            
            .singup-filter-option {
                padding: 8px 15px;
                font-size: 0.85rem;
            }
            
            .singup-highlight {
                padding: 20px 15px;
            }
            
            .singup-highlight h2 {
                font-size: 1.5rem;
            }
            
            .singup-highlight-btn {
                padding: 10px 20px;
                font-size: 0.95rem;
            }
            
            .singup-card-title {
                font-size: 1.15rem;
            }
            
            .singup-info-item {
                gap: 8px;
            }
            
            .singup-info-item i {
                margin-right: 8px;
                font-size: 1rem;
            }
            
            .singup-footer p {
                font-size: 16px;
            }

            /* 更小屏幕调整 */
            .singup-header {
                margin-top: 70px;
                padding: 1.2rem 0;
            }
        }
        
        @media (max-width: 400px) {
            .singup-card-footer {
                flex-direction: column;
                gap: 10px;
                align-items: flex-start;
            }
            
            .singup-btn-details {
                width: 100%;
                justify-content: center;
            }
        }
        
        	        /* 页脚设计 */
        footer {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            padding: 2.5rem 0 1.5rem;
        }

        .copyright {
            padding-bottom: 15px;
            border-top: 0px solid #444;
            font-size: 0.85rem;
            color: white;
            text-align: center;
        }