/* 重置样式和全局变量 */
        * {
            margin: 0;
            padding: 0;
            /* box-sizing: border-box; */
        }
        
        :root {
            /* 色彩方案 */
            --primary: #4CAF50;
            --primary-light: #81C784;
            --accent: #FF9800;
            --accent-light: #FFB74D;
            --background-light: #F5F5F5;
            --background-card: #FFFFFF;
            --text-dark: #263238;
            --text-muted: #607D8B;
            --border-color: #e0e0e0;
            --box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --border-radius: 16px;
            --section-spacing: 5rem;
            
            /* 响应式基础 */
            font-size: calc(14px + 0.25vw);
        }
        
        body {
            font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background: linear-gradient(to bottom, #f0f9f0, #ffffff);
            background-attachment: fixed;
            overflow-x: hidden;
            width: 100%;
            max-width: 1440px;
            margin: 0 auto;
            
        }
        
        /* 导航栏样式 */
        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.2rem 3rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            border-bottom: 1px solid var(--border-color);
        }
        
        
        .logo {
            display: flex;
            align-items: center;
            font-size: 1.7rem;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        
        .logo span {
            color: var(--primary);
        }
        
        .logo i {
            margin-right: 0.8rem;
            color: var(--primary);
            font-size: 1.8rem;
        }
        
        nav ul {
            display: flex;
            list-style: none;
            gap: 2.5rem;
        }
        
        nav a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            position: relative;
            padding: 0.5rem 0.2rem;
        }
        
        nav a:hover {
            color: var(--primary);
        }
        
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: linear-gradient(to right, var(--primary), var(--accent));
            transition: var(--transition);
            border-radius: 2px;
        }
        
        nav a:hover::after {
            width: 100%;
        }
        
        .header-cta {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        
        .start-btn {
            padding: 0.9rem 1.8rem;
            background: linear-gradient(120deg, var(--primary), var(--primary-light));
            color: white;
            border: none;
            border-radius: 50px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1.05rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            box-shadow: 0 6px 20px rgba(76, 175, 80, 0.25);
            margin-left: 100px;
        }
        
        .start-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(76, 175, 80, 0.4);
        }
        
        /* 主内容区域 */
        .hero {
            position: relative;
            padding: 7rem 3rem 5rem;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }
        
        .hero-content {
            position: relative;
            z-index: 2;
        }
        
        .hero h1 {
            font-size: 4.5rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            font-weight: 800;
            background: linear-gradient(to right, var(--text-dark), var(--primary));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: -0.5px;
        }
        
        .hero p {
            font-size: 1.5rem;
            color: var(--text-muted);
            margin-bottom: 2.8rem;
            font-weight: 400;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }
        
        /* 卡片区域样式 */
        .destinations {
            padding: 0 2rem var(--section-spacing);
            position: relative;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 2rem;
        }
        
        .section-title {
            font-size: 2.7rem;
            color: var(--text-dark);
            font-weight: 800;
            margin-bottom: 1.2rem;
        }
        
        .section-subtitle {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 650px;
            margin: 0 auto;
        }
        
        .cards-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2.5rem;
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .card {
            background-color: var(--background-card);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            position: relative;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        
        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 8px;
            border-radius: var(--border-radius) var(--border-radius) 0 0;
        }
        
        .card:hover {
            transform: translateY(-12px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }
        
        .card.europe::before {
            background: linear-gradient(to right, #43a047, #66bb6a);
        }
        
        .card.america::before {
            background: linear-gradient(to right, #ff9800, #ffb74d);
        }
        
        .card.asia::before {
            background: linear-gradient(to right, #00bcd4, #4dd0e1);
        }
        
        .card.korea-japan::before {
            background: linear-gradient(to right, #7e57c2, #9fa8da);
        }
        
        .card-image {
            height: 240px;
            width: 100%;
            overflow: hidden;
            position: relative;
        }
        
        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        
        .card:hover .card-image img {
            transform: scale(1.08);
        }
        
        .card-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 1.2rem;
            background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
            color: white;
        }
        
        .card-content {
            padding: 0rem;  /* 距离上面背景图的距离 */
            flex-grow: 1;    
            display: flex;
            flex-direction: column;
        }
        
        /* .card-header {
            display: flex;
            align-items: center;
            margin-bottom: 0.5rem;
        }
         */

        /* .card-icon {
            width: 30px;
            height: 30px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-right: 1rem;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
            flex-shrink: 0;
        }
         */

        .card.europe .card-icon {
            background: rgba(76, 175, 80, 0.15);
            color: var(--primary);
        }
        
        .card.america .card-icon {
            background: rgba(255, 152, 0, 0.15);
            color: var(--accent);
        }
        
        .card.asia .card-icon {
            background: rgba(0, 188, 212, 0.15);
            color: #00bcd4;
        }
        
        .card.korea-japan .card-icon {
            background: rgba(126, 87, 194, 0.15);
            color: #7e57c2;
        }
        
        .card h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0;
        }
        
        .attraction-list {
            list-style: none;
            margin-top: 0.8rem;
            flex-grow: 1;
          
        }
        
        .attraction-list li {
            display: flex;
            align-items: flex-start;
            padding: 0.5rem 0;
            justify-content: center; /* ul中li的居中显示 */
        }
        
        .attraction-list li i {
            color: var(--primary);
            margin-right: 0.8rem;
            margin-top: 0.3rem;
            font-size: 0.9rem;
        }
        
        .card-footer {
            /* margin-top: 0.5rem; */
            padding-top: 0.5rem;
            margin-left: 1.5rem;
            margin-right: 1.5rem;
            margin-bottom: 0.5rem;
            border-top: 1px solid rgba(0, 0, 0, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .duration {
            background: rgba(76, 175, 80, 0.08);
            color: var(--primary);
            padding: 0.6rem 1.2rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
        }
        
        .discover-btn {
            display: flex;
            align-items: center;
            font-weight: 600;
            color: var(--text-muted);
            transition: var(--transition);
            text-decoration: none;
            gap: 0.3rem;
        }
        
        .discover-btn:hover {
            color: var(--primary);
            gap: 0.7rem;
        }
        
        /* 页脚样式 */
        footer {
            background: linear-gradient(to right, #263238, #37474F);
            color: white;
            padding: 4rem 3rem 2rem;
        }
        
        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
        }
        
        .footer-section h4 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 1.8rem;
            position: relative;
        }
        
        .footer-section h4::after {
            content: '';
            position: absolute;
            bottom: -0.5rem;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--primary);
        }
        
        .footer-info .logo {
            color: white;
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
        }
        
        .footer-info p {
            color: #b0bec5;
            margin-bottom: 1.8rem;
        }
        
        .social-links {
            display: flex;
            gap: 1.2rem;
        }
        
        .social-link {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            transition: var(--transition);
        }
        
        .social-link:hover {
            background: var(--primary);
            transform: translateY(-5px);
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        
        .footer-links a {
            color: #b0bec5;
            text-decoration: none;
            transition: var(--transition);
            font-size: 1.05rem;
        }
        
        .footer-links a:hover {
            color: white;
            padding-left: 0.5rem;
        }
        
        .copyright {
            margin-top: 3rem;
            padding-top: 1.5rem;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #b0bec5;
            font-size: 0.9rem;
        }
        
        /* 装饰元素  背景虚化 */
        .blob {
            position: absolute;
            border-radius: 50%;
            filter: blur(80px);
            opacity: 0.2;
            z-index: -1;
        }
        
        .blob-green {
            width: 500px;
            height: 500px;
            background: var(--primary);
            top: 10%;
            left: -150px;
        }
        
        .blob-orange {
            width: 400px;
            height: 400px;
            background: var(--accent);
            bottom: 20%;
            right: -150px;
        }
        
        /* 响应式设计 */
        @media (max-width: 1100px) {
            .cards-container {
                grid-template-columns: repeat(2, 1fr);
                max-width: 800px;
            }
            
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 768px) {
            header {
                padding: 1rem 1.5rem;
            }
            
            .header-cta .nav-links {
                display: none;
            }
            
            .nav-toggle {
                display: block;
                font-size: 1.8rem;
                background: none;
                border: none;
                color: var(--text-dark);
                cursor: pointer;
            }
            
            .mobile-menu {
                display: none;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(255, 255, 255, 0.97);
                z-index: 10000;
                flex-direction: column;
                padding: 2rem;
                overflow-y: auto;
            }
            
            .mobile-menu.active {
                display: flex;
            }
            
            .mobile-nav {
                list-style: none;
                margin-top: 3rem;
            }
            
            .mobile-nav li {
                margin-bottom: 1.5rem;
            }
            
            .mobile-nav a {
                font-size: 1.4rem;
                font-weight: 600;
                color: var(--text-dark);
                text-decoration: none;
            }
            
            .close-menu {
                align-self: flex-end;
                background: none;
                border: none;
                font-size: 1.8rem;
                cursor: pointer;
                color: var(--text-dark);
            }
            
            .hero {
                padding: 5rem 1.5rem 3rem;
            }
            
            .hero h1 {
                font-size: 2.7rem;
            }
            
            .hero p {
                font-size: 1.3rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }
        
        @media (max-width: 580px) {
            .cards-container {
                grid-template-columns: 1fr;
            }
            
            .hero h1 {
                font-size: 2.3rem;
            }
            
            .section-title {
                font-size: 2.2rem;
            }
        }