/* 跨文化约会旅游展示区 */
    .tours-showcase {
        margin: 60px 0;
        background: linear-gradient(135deg, #f9fafc 0%, #f0f2ff 100%);
        border-radius: 24px;
        padding: 40px 30px;
        box-shadow: 0 10px 30px rgba(106, 90, 205, 0.08);
        position: relative;
        overflow: hidden;
    }

    .tours-showcase::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23c0c0dd' fill-opacity='0.08' fill-rule='evenodd'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");
        opacity: 0.3;
        z-index: 0;
    }

    .tours-header {
        position: relative;
        z-index: 1;
        text-align: center;
        margin-bottom: 38px;
    }

    .tours-header h2 {
        font-size: 2.2rem;
        color: var(--text-dark);
        margin-bottom: 15px;
        font-weight: 600;
        position: relative;
        display: inline-block;
        letter-spacing: -0.01em;
    }

    .tours-header h2::after {
        content: '✈️';
        position: absolute;
        font-size: 1.8rem;
        right: -35px;
        top: 0;
        opacity: 0.9;
        animation: float 2.5s ease-in-out infinite;
    }

    @keyframes float {
        0% { transform: translateY(0px); }
        50% { transform: translateY(-6px); }
        100% { transform: translateY(0px); }
    }

    .tours-subtitle {
        font-size: 1.1rem;
        color: var(--text-light);
        max-width: 800px;
        margin: 0 auto;
    }

    /* 旅游分类标题 */
    .tours-category-title {
        font-size: 1.5rem;
        color: var(--text-dark);
        margin: 30px 0 20px;
        padding-bottom: 10px;
        border-bottom: 2px solid rgba(106, 90, 205, 0.15);
        display: inline-block;
        position: relative;
        z-index: 1;
        font-weight: 500;
    }

    /* 旅游活动列表 */
    .tours-list {
        position: relative;
        z-index: 1;
        display: flex;
        flex-direction: column;
        gap: 18px;
        margin-bottom: 30px;
    }

    /* 旅游活动项 - 现代化设计 */
    .tour-item {
        background: white;
        border-radius: 16px;
        overflow: hidden;
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
        transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
        border: 1px solid rgba(230, 230, 250, 0.5);
    }

    .tour-item:hover {
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.07);
        transform: translateY(-2px);
    }

    .tour-item-header {
        padding: 16px 20px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        cursor: pointer;
        background: rgba(252, 252, 255, 0.7);
        transition: background-color 0.35s ease;
        position: relative;
    }

    /* 封面图片样式 */
    .tour-cover-image {
        width: 90px;
        height: 90px;
        border-radius: 14px;
        overflow: hidden;
        margin-right: 18px;
        flex-shrink: 0;
        box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
    }

    .tour-cover-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

    .tour-item:hover .tour-cover-image img {
        transform: scale(1.08);
    }

    .tour-item-header:hover {
        background: rgba(247, 247, 255, 0.9);
    }

    .tour-item-info {
        flex: 1;
    }

    .tour-item-title {
        font-size: 1.25rem;
        font-weight: 600;
        color: var(--text-dark);
        margin-bottom: 10px;
        letter-spacing: -0.01em;
        line-height: 1.3;
    }

    .tour-item-date {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-wrap: wrap;
    }

    .tour-date-badge {
        display: inline-block;
        background: linear-gradient(135deg, #f0f0ff 0%, #e6e6fa 100%);
        color: var(--primary-color);
        padding: 5px 12px;
        border-radius: 20px;
        font-size: 0.85rem;
        font-weight: 500;
        border: 1px solid rgba(106, 90, 205, 0.1);
    }

    .tour-location-badge {
        display: inline-flex;
        align-items: center;
        color: var(--text-light);
        font-size: 0.85rem;
    }

    .tour-location-badge::before {
        content: '📍';
        margin-right: 5px;
        font-size: 1rem;
    }

    .tour-item-toggle {
        width: 34px;
        height: 34px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary-color);
        font-size: 0.9rem;
        position: relative;
        background: rgba(240, 240, 255, 0.5);
        border-radius: 50%;
        margin-left: 5px;
        transition: background-color 0.3s ease;
    }

    .tour-item-toggle:hover {
        background: rgba(230, 230, 250, 0.8);
    }

    /* 改进的箭头样式 */
    .toggle-icon {
        position: relative;
        width: 14px;
        height: 14px;
        transition: transform 0.3s ease;
    }

    .toggle-icon::before,
    .toggle-icon::after {
        content: '';
        position: absolute;
        background-color: var(--primary-color);
        top: 50%;
        width: 8px;
        height: 2px;
        border-radius: 1px;
        transition: all 0.3s ease;
    }

    .toggle-icon::before {
        left: 1px;
        transform: translateY(-50%) rotate(45deg);
    }

    .toggle-icon::after {
        right: 1px;
        transform: translateY(-50%) rotate(-45deg);
    }

    .tour-item.expanded .toggle-icon {
        transform: rotate(180deg);
    }

    .toggle-icon:hover::before,
    .toggle-icon:hover::after {
        background-color: #ff3c4a;
        width: 9px;
    }

    /* 旅游活动内容区域 */
    .tour-item-content {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        background: white;
        padding: 0 20px;
    }

    .tour-item.expanded .tour-item-content {
        max-height: 2000px; /* 足够大的高度以容纳内容 */
        padding: 5px 22px 25px;
    }

    .tour-item-description {
        font-size: 0.97rem;
        color: var(--text-light);
        line-height: 1.6;
        margin: 15px 0 22px;
        padding-top: 5px;
        border-top: 1px solid rgba(230, 230, 250, 0.5);
    }

    /* 旅游统计数据 */
    .tour-item-stats {
        display: flex;
        gap: 30px;
        margin-bottom: 28px;
        flex-wrap: wrap;
        background: rgba(250, 250, 255, 0.5);
        padding: 15px 20px;
        border-radius: 12px;
        justify-content: center;
    }

    /* 照片画廊 */
    .tour-photos-gallery {
        margin: 20px 0;
    }

    .tour-photos-gallery h4 {
        font-size: 1.1rem;
        color: var(--text-dark);
        margin-bottom: 15px;
        position: relative;
        font-weight: 500;
        letter-spacing: 0.01em;
    }

    .tour-photos-gallery h4::after {
        content: '📷';
        margin-left: 10px;
        font-size: 1rem;
    }

    .photos-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(165px, 1fr));
        gap: 12px;
        margin-bottom: 20px;
    }

    .photo-item {
        border-radius: 10px;
        overflow: hidden;
        position: relative;
        aspect-ratio: 4/3;
        box-shadow: 0 3px 8px rgba(0, 0, 0, 0.08);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .photo-item img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

    .photo-item:hover {
        transform: translateY(-3px);
        box-shadow: 0 5px 12px rgba(0, 0, 0, 0.12);
    }

    .photo-item:hover img {
        transform: scale(1.07);
    }

    .photo-caption {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        background: linear-gradient(0deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.3) 70%, rgba(0,0,0,0) 100%);
        color: white;
        padding: 15px 10px 8px;
        font-size: 0.8rem;
        opacity: 0;
        transition: opacity 0.3s ease;
        text-align: center;
    }

    .photo-item:hover .photo-caption {
        opacity: 1;
    }

    .no-photos {
        text-align: center;
        padding: 30px;
        color: var(--text-light);
        background: #fafbff;
        border-radius: 12px;
        font-style: italic;
    }

    /* 分隔线 */
    .tours-divider {
        height: 1px;
        background: rgba(230, 230, 250, 0.5);
        margin: 35px 0;
        position: relative;
    }

    .tours-divider::before {
        content: '';
        position: absolute;
        width: 120px;
        height: 3px;
        background: linear-gradient(90deg, rgba(106, 90, 205, 0.4), rgba(106, 90, 205, 0.1));
        top: -1px;
        left: 50%;
        transform: translateX(-50%);
        border-radius: 3px;
    }

    /* 历史旅游活动 */
    .past-tour .tour-item-header {
        background: rgba(250, 250, 250, 0.5);
    }

    .past-tour .tour-date-badge {
        background: linear-gradient(135deg, #f5f5f5 0%, #efefef 100%);
        color: #777;
        border: 1px solid rgba(0, 0, 0, 0.05);
    }

    /* 注册行动按钮 - 重新设计 */
    .btn-tour-details {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 14px 28px;
        background: linear-gradient(135deg, #ff416c, #ff4b2b);
        color: white;
        border-radius: 50px;
        text-decoration: none;
        font-weight: 600;
        font-size: 1rem;
        transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        border: none;
        cursor: pointer;
        box-shadow: 0 5px 15px rgba(255, 65, 108, 0.3);
        outline: none;
        margin-top: 5px;
        position: relative;
        overflow: hidden;
    }

    .btn-tour-details::after {
        content: '';
        position: absolute;
        width: 100%;
        height: 100%;
        top: 0;
        left: -100%;
        background: linear-gradient(90deg, 
            rgba(255, 255, 255, 0) 0%, 
            rgba(255, 255, 255, 0.2) 50%, 
            rgba(255, 255, 255, 0) 100%);
        transition: left 0.6s ease;
    }

    .btn-tour-details:hover {
        transform: translateY(-3px) scale(1.03);
        box-shadow: 0 7px 20px rgba(255, 65, 108, 0.4);
        background: linear-gradient(135deg, #ff4b2b, #ff416c);
    }

    .btn-tour-details:hover::after {
        left: 100%;
    }

    .btn-tour-details:active {
        transform: translateY(-1px);
        box-shadow: 0 3px 10px rgba(255, 65, 108, 0.3);
    }

    .btn-tour-details::before {
        content: '✨';
        margin-right: 8px;
        font-size: 0.9rem;
    }

    .tour-action {
        text-align: center;
        margin-top: 20px;
        margin-bottom: 5px;
    }

    /* 旅游报名模态框样式 */
    .registration-modal {
        max-width: 650px;
    }

    .tour-highlight {
        display: flex;
        align-items: center;
        gap: 20px;
        margin-bottom: 25px;
        padding: 15px;
        background: rgba(255, 250, 250, 0.6);
        border-radius: 12px;
    }

    .tour-modal-image {
        width: 120px;
        height: 120px;
        border-radius: 10px;
        overflow: hidden;
        flex-shrink: 0;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }

    .tour-modal-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .tour-modal-details {
        flex: 1;
    }

    .tour-date-location {
        font-size: 1.1rem;
        color: var(--text-dark);
        margin-bottom: 10px;
        font-weight: 500;
    }

    .tour-spots-info {
        font-size: 0.9rem;
    }

    .spots-badge {
        display: inline-flex;
        align-items: center;
        padding: 3px 10px;
        background: rgba(255, 65, 108, 0.1);
        color: #ff416c;
        border-radius: 20px;
        font-weight: 500;
    }

    .spots-badge #tourSpotsLeft {
        font-weight: 700;
        margin-right: 4px;
    }

    .registration-form {
        display: flex;
        flex-direction: column;
        gap: 20px;
    }

    .form-row {
        display: flex;
        gap: 20px;
    }

    .form-group {
        flex: 1;
        display: flex;
        flex-direction: column;
    }

    .form-group.full-width {
        width: 100%;
    }

    .form-group label {
        font-size: 0.95rem;
        color: var(--text-dark);
        margin-bottom: 5px;
        font-weight: 500;
    }

    .form-group .required {
        color: #ff416c;
        margin-left: 3px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 12px 15px;
        border: 1px solid rgba(106, 90, 205, 0.2);
        border-radius: 8px;
        font-size: 1rem;
        transition: border 0.3s ease, box-shadow 0.3s ease;
        font-family: inherit;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
        border-color: rgba(255, 65, 108, 0.5);
        box-shadow: 0 0 0 3px rgba(255, 65, 108, 0.1);
        outline: none;
    }

    .form-group textarea {
        resize: vertical;
        min-height: 80px;
    }

    /* 自定义复选框 */
    .checkbox-container {
        display: inline-flex;
        align-items: center;
        position: relative;
        padding-left: 35px;
        cursor: pointer;
        font-size: 0.95rem;
        user-select: none;
    }

    .checkbox-container input {
        position: absolute;
        opacity: 0;
        cursor: pointer;
        height: 0;
        width: 0;
    }

    .checkmark {
        position: absolute;
        top: 0;
        left: 0;
        height: 20px;
        width: 20px;
        background-color: #fff;
        border: 1px solid rgba(106, 90, 205, 0.2);
        border-radius: 4px;
        transition: all 0.2s ease;
    }

    .checkbox-container:hover input ~ .checkmark {
        border-color: rgba(255, 65, 108, 0.5);
    }

    .checkbox-container input:checked ~ .checkmark {
        background-color: #ff416c;
        border-color: #ff416c;
    }

    .checkmark:after {
        content: "";
        position: absolute;
        display: none;
    }

    .checkbox-container input:checked ~ .checkmark:after {
        display: block;
    }

    .checkbox-container .checkmark:after {
        left: 7px;
        top: 3px;
        width: 5px;
        height: 10px;
        border: solid white;
        border-width: 0 2px 2px 0;
        transform: rotate(45deg);
    }

    .terms-group {
        margin: 5px 0;
    }

    .form-actions {
        margin-top: 10px;
        text-align: center;
    }

    .btn-submit {
        padding: 14px 32px;
        background: linear-gradient(135deg, #ff416c, #ff4b2b);
        color: white;
        border-radius: 50px;
        font-weight: 600;
        font-size: 1rem;
        border: none;
        cursor: pointer;
        transition: all 0.3s ease;
        box-shadow: 0 4px 15px rgba(255, 65, 108, 0.25);
    }

    .btn-submit:hover {
        transform: translateY(-3px);
        box-shadow: 0 7px 20px rgba(255, 65, 108, 0.35);
    }

    .btn-submit:disabled {
        background: #ccc;
        cursor: not-allowed;
        transform: none;
        box-shadow: none;
    }

    .registration-success {
        text-align: center;
        padding: 30px 20px;
    }

    .success-icon {
        font-size: 3rem;
        color: #4CAF50;
        margin-bottom: 20px;
        display: inline-block;
        width: 80px;
        height: 80px;
        line-height: 80px;
        border-radius: 50%;
        background: rgba(76, 175, 80, 0.1);
    }

    .registration-success h3 {
        font-size: 1.5rem;
        color: var(--text-dark);
        margin-bottom: 15px;
    }

    .registration-success p {
        color: var(--text-light);
        margin-bottom: 25px;
    }

    .btn-close-success {
        padding: 10px 25px;
        background: #4CAF50;
        color: white;
        border-radius: 30px;
        border: none;
        font-weight: 500;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .btn-close-success:hover {
        background: #43a047;
        transform: translateY(-2px);
        box-shadow: 0 4px 10px rgba(76, 175, 80, 0.2);
    }

    /* 占位符 */
    .tours-placeholder {
        text-align: center;
        padding: 30px;
        background: rgba(255, 255, 255, 0.7);
        border-radius: 14px;
        font-style: italic;
        color: var(--text-light);
        border: 1px dashed rgba(106, 90, 205, 0.2);
    }

    /* 响应式调整 */
    @media (max-width: 768px) {
        .tour-highlight {
            flex-direction: column;
            text-align: center;
            padding: 15px 10px;
        }
        
        .tour-modal-image {
            margin: 0 auto 15px;
        }
        
        .form-row {
            flex-direction: column;
            gap: 15px;
        }
        
        .btn-tour-details {
            padding: 12px 25px;
            font-size: 0.95rem;
        }
        
        .registration-modal {
            padding: 20px 15px;
        }
    }

    @media (max-width: 480px) {
        .tour-highlight {
            padding: 12px 8px;
        }
        
        .tour-modal-image {
            width: 100px;
            height: 100px;
        }
        
        .tour-date-location {
            font-size: 1rem;
        }
        
        .btn-tour-details {
            padding: 10px 22px;
            font-size: 0.9rem;
        }
        
        .btn-submit {
            width: 100%;
            padding: 12px 20px;
        }
        
        .registration-success h3 {
            font-size: 1.3rem;
        }
    }

    /* 响应式设计 */
    @media (max-width: 992px) {
        .tours-showcase {
            padding: 30px 20px;
        }
        
        .tours-header h2 {
            font-size: 1.8rem;
        }
        
        .tours-subtitle {
            font-size: 1rem;
        }
        
        .tours-category-title {
            font-size: 1.3rem;
        }
    }

    @media (max-width: 768px) {
        .tours-showcase {
            margin: 40px 0;
            padding: 25px 15px;
        }
        
        .tours-header h2 {
            font-size: 1.6rem;
        }
        
        .tours-subtitle {
            font-size: 0.95rem;
        }
        
        .tours-category-title {
            font-size: 1.2rem;
        }
        
        .tour-item-header {
            padding: 12px 15px;
        }
        
        .tour-item-title {
            font-size: 1.1rem;
        }
        
        .tour-cover-image {
            width: 70px;
            height: 70px;
            margin-right: 12px;
            border-radius: 10px;
        }
        
        .tour-item.expanded .tour-item-content {
            padding: 5px 15px 20px;
        }
        
        .photos-grid {
            grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        }
    }

    @media (max-width: 480px) {
        .tours-showcase {
            padding: 20px 12px;
        }
        
        .tours-header h2 {
            font-size: 1.4rem;
        }
        
        .tours-header h2::after {
            font-size: 1.4rem;
            right: -30px;
        }
        
        .tours-subtitle {
            font-size: 0.9rem;
        }
        
        .tours-category-title {
            font-size: 1.1rem;
        }
        
        .tour-item-header {
            padding: 10px 12px;
        }
        
        .tour-item-title {
            font-size: 1rem;
        }
        
        .tour-item-date {
            gap: 8px;
        }
        
        .tour-date-badge,
        .tour-location-badge {
            font-size: 0.8rem;
        }
        
        .tour-cover-image {
            width: 60px;
            height: 60px;
            margin-right: 10px;
            border-radius: 8px;
        }
        
        .tour-item.expanded .tour-item-content {
            padding: 5px 12px 18px;
        }
        
        .tour-item-description {
            font-size: 0.9rem;
        }
        
        .photos-grid {
            grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
            gap: 8px;
        }
        
        .tour-photos-gallery h4 {
            font-size: 1rem;
        }
        
        .photo-caption {
            padding: 12px 8px 6px;
            font-size: 0.75rem;
        }
        
        .btn-tour-details {
            padding: 10px 20px;
            font-size: 0.9rem;
        }
    }

    .tour-item-poster {
        display: block;
        position: relative;
        min-height: 320px;
        background: #fff;
        border-radius: 18px;
        box-shadow: 0 4px 24px 0 rgba(255,59,48,0.10);
        margin: 32px 0;
        padding: 0;
        overflow: hidden;
    }
    .tour-poster-image {
        position: absolute;
        left: 0; top: 0; bottom: 0;
        width: 52%;
        height: 100%;
        background: #f8f8f8;
        overflow: hidden;
        display: flex;
        align-items: stretch;
        justify-content: center;
        padding: 0;
        margin: 0;
    }
    .tour-poster-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
        border-radius: 0;
        margin: 0;
        padding: 0;
    }
    .tour-poster-info {
        margin-left: 52%;
        padding: 36px 36px 36px 36px;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        min-width: 0;
        height: 100%;
    }
    .tour-poster-title {
        font-size: 2.1rem;
        font-weight: 700;
        margin-bottom: 18px;
        color: #e53935;
        line-height: 1.2;
    }
    .tour-poster-date-location {
        font-size: 1.1rem;
        margin-bottom: 18px;
        color: #666;
        display: flex;
        gap: 18px;
        align-items: center;
    }
    .tour-poster-description {
        font-size: 1.15rem;
        color: #333;
        margin-bottom: 28px;
        line-height: 1.6;
    }
    .tour-poster-action {
        margin-top: 12px;
        margin-bottom: 0;
    }
    .tour-poster-action .btn-tour-details {
        display: block;
        margin-left: auto;
        margin-top: 16px;
        background-color: var(--primary-color);
        color: white;
        padding: 12px 20px;
        border-radius: 8px;
        font-weight: 600;
        font-size: 16px;
        cursor: pointer;
        position: relative;
        overflow: hidden;
        z-index: 1;
        min-width: 110px;
        text-align: center;
        border: none;
        box-shadow: none;
        transition: all 0.2s cubic-bezier(0.4,0,0.2,1);
    }
    .tour-poster-action .btn-tour-details:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
        background-color: #e22a1d;
    }
    .tour-poster-action .btn-tour-details:active {
        transform: scale(0.95);
        opacity: 0.9;
    }
    .tour-poster-action .btn-tour-details:disabled {
        background-color: #cccccc;
        cursor: not-allowed;
        color: #999;
        transform: none;
        box-shadow: none;
    }
    @media (max-width: 900px) {
        .tour-item-poster {
            display: flex;
            flex-direction: column;
            position: static;
            min-height: unset;
        }
        .tour-poster-image {
            position: static;
            width: 100% !important;
            max-width: 100% !important;
            min-width: unset;
            height: auto !important;
            min-height: 180px;
            aspect-ratio: 16 / 9;
        }
        .tour-poster-info {
            margin-left: 0;
            padding: 24px 18px 24px 18px;
            height: auto;
        }
    }
    @media (max-width: 600px) {
        .tour-item-poster {
            margin: 18px 0;
        }
        .tour-poster-info {
            padding: 14px 8px 18px 8px;
        }
        .tour-poster-title {
            font-size: 1.1rem;
        }
        .tour-poster-description {
            font-size: 0.98rem;
        }
        .tour-poster-date-location {
            font-size: 0.95rem;
        }
        .tour-poster-action .btn-tour-details {
            font-size: 1rem;
            padding: 10px 18px;
        }
    }

    .tours-list.past-tours-list .tour-item {
        border-left: 5px solid #cccccc;
        background-color: #f9f9f9;
    }

    .tours-list.past-tours-list .tour-item:hover {
        border-left-color: #bbbbbb;
        transform: none;
        box-shadow: 0 4px 8px rgba(0,0,0,0.05);
    }