/* --- 全局变量与重置 --- */
        :root {
            --primary-color: #0f766e; /* 深青色 */
            --secondary-color: #14b8a6; /* 浅青色 */
            --accent-color: #f97316; /* 活力橙，用于强调 */
            --bg-light: #f0fdfa; /* 极浅青背景 */
            --bg-white: #ffffff;
            --text-main: #1f2937;
            --text-light: #6b7280;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --font-main: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            color: var(--text-main);
            background-color: var(--bg-white);
            line-height: 1.6;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        ul {
            list-style: none;
        }

        img {
            max-width: 100%;
            display: block;
            object-fit: cover;
        }

        /* --- 布局容器 --- */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-header h2 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 15px;
            font-weight: 700;
        }

        .section-header p {
            color: var(--text-light);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto;
        }

        /* --- 导航栏 --- */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }

        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary-color);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links {
            display: flex;
            gap: 30px;
        }

        .nav-links li a {
            font-weight: 500;
            color: var(--text-main);
            transition: var(--transition);
            position: relative;
        }

        .nav-links li a:hover {
            color: var(--secondary-color);
        }

        .nav-links li a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background-color: var(--secondary-color);
            transition: var(--transition);
        }

        .nav-links li a:hover::after {
            width: 100%;
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: white;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-block;
        }

        .btn-primary:hover {
            background-color: var(--secondary-color);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .mobile-menu-btn {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-main);
        }

        /* --- Hero 首屏 --- */
        .hero {
            height: 100vh;
            min-height: 600px;
            background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.4)), url('../img/t1.jpg') no-repeat center center/cover;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            color: white;
            padding-top: 70px; /* Offset fixed header */
        }

        .hero-content h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            text-shadow: 0 2px 10px rgba(0,0,0,0.3);
            letter-spacing: 2px;
        }

        .hero-content p {
            font-size: 1.25rem;
            margin-bottom: 40px;
            opacity: 0.9;
        }

        /* --- 地域介绍 --- */
        .about {
            background-color: var(--bg-white);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--text-main);
        }

        .about-text p {
            margin-bottom: 20px;
            color: var(--text-light);
            text-align: justify;
        }

        .about-image {
            position: relative;
        }

        .about-image img {
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
        }

        .about-badge {
            position: absolute;
            bottom: -20px;
            left: -20px;
            background-color: var(--accent-color);
            color: white;
            padding: 20px;
            border-radius: 12px;
            box-shadow: var(--shadow-md);
        }

        .about-badge span {
            display: block;
            font-size: 2rem;
            font-weight: 700;
            line-height: 1;
        }

        .about-badge small {
            font-size: 0.9rem;
            opacity: 0.9;
        }

        /* --- 著名景点 --- */
        .attractions {
            background-color: var(--bg-light);
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            cursor: pointer;
        }

        .card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
        }

        .card-image {
            height: 220px;
            overflow: hidden;
        }

        .card-image img {
            width: 100%;
            height: 100%;
            transition: transform 0.5s ease;
        }

        .card:hover .card-image img {
            transform: scale(1.1);
        }

        .card-content {
            padding: 24px;
        }

        .card-tag {
            background-color: #e0f2fe;
            color: #0284c7;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 12px;
        }

        .card-content h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
        }

        .card-content p {
            color: var(--text-light);
            font-size: 0.95rem;
        }

        /* --- 著名美食 --- */
        .food-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
      
        /* 一个更灵活的美食布局，包含一个大图 */
        .food-item {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            height: 350px;
            group: food-group;
        }

        .food-item.large {
            grid-column: span 2;
            grid-row: span 2;
            height: 720px;
        }

        .food-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            background: linear-gradient(transparent, rgba(0,0,0,0.8));
            padding: 30px 20px;
            color: white;
            transform: translateY(20px);
            opacity: 0.9;
            transition: var(--transition);
        }

        .food-item:hover .food-overlay {
            transform: translateY(0);
            opacity: 1;
        }

        .food-overlay h3 {
            font-size: 1.5rem;
            margin-bottom: 5px;
        }

        .food-overlay p {
            font-size: 0.9rem;
            opacity: 0.8;
        }

        /* --- 特色线路 --- */
        .routes {
            background-color: #f8fafc;
        }

        .route-card {
            background: white;
            border-radius: 16px;
            padding: 30px;
            box-shadow: var(--shadow-md);
            border-left: 5px solid var(--secondary-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .route-days {
            font-size: 0.9rem;
            color: var(--accent-color);
            font-weight: 700;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .route-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
        }

        .route-steps {
            margin: 20px 0;
            border-left: 2px dashed #e5e7eb;
            padding-left: 20px;
        }

        .step {
            position: relative;
            margin-bottom: 15px;
        }

        .step::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 5px;
            width: 10px;
            height: 10px;
            background-color: var(--secondary-color);
            border-radius: 50%;
        }

        .step strong {
            display: block;
            color: var(--text-main);
        }

        .step span {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        .route-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid #f3f4f6;
            padding-top: 20px;
            margin-top: 10px;
        }

        .price {
            font-size: 1.5rem;
            color: var(--accent-color);
            font-weight: 700;
        }

        .price small {
            font-size: 0.9rem;
            font-weight: 400;
            color: var(--text-light);
        }

        .btn-outline {
            border: 2px solid var(--primary-color);
            color: var(--primary-color);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-outline:hover {
            background-color: var(--primary-color);
            color: white;
        }

        /* --- 联系我们 --- */
        .contact {
            background-color: var(--bg-white);
        }

        .contact-container {
            display: flex;
            gap: 50px;
            background-color: var(--bg-light);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .contact-info {
            flex: 1;
            padding: 50px;
            background-color: var(--primary-color);
            color: white;
        }

        .contact-info h3 {
            font-size: 2rem;
            margin-bottom: 20px;
        }

        .info-item {
            margin-bottom: 30px;
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }

        .info-icon {
            font-size: 1.2rem;
            background: rgba(255,255,255,0.2);
            padding: 10px;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .contact-form-wrapper {
            flex: 1.5;
            padding: 50px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #d1d5db;
            border-radius: 8px;
            font-family: inherit;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.2);
        }

        /* --- Footer --- */
        footer {
            background-color: #111827;
            color: white;
            padding: 50px 0 20px;
            text-align: center;
        }

        .footer-content {
            margin-bottom: 40px;
        }

        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 20px;
            display: inline-block;
        }

        .social-links {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 20px;
        }

        .social-links a {
            color: #9ca3af;
            transition: var(--transition);
        }

        .social-links a:hover {
            color: white;
        }

        .copyright {
            border-top: 1px solid #374151;
            padding-top: 20px;
            color: #6b7280;
            font-size: 0.9rem;
        }

        /* --- 响应式设计 --- */
        @media (max-width: 992px) {
            .food-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .food-item.large {
                grid-column: span 2;
                grid-row: span 1;
                height: 350px;
            }
        }

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

            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: white;
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow-md);
                gap: 20px;
                transform: translateY(-150%);
                transition: transform 0.3s ease-in-out;
                z-index: 999;
            }

            .nav-links.active {
                transform: translateY(0);
            }

            .nav-links li {
                width: 100%;
                text-align: center;
            }

            .about-grid {
                grid-template-columns: 1fr;
            }
          
            .about-image {
                order: -1; /* 图片在手机端显示在上方 */
            }

            .about-badge {
                right: 20px;
                left: auto;
                bottom: -30px;
            }

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

            .contact-container {
                flex-direction: column;
            }

            .food-grid {
                grid-template-columns: 1fr;
            }
          
            .food-item {
                height: 250px;
            }
        }