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            animation-delay: -15s;
        }

        @keyframes float-cloud {
            0%, 100% { transform: translateX(0) translateY(0); }
            25% { transform: translateX(50px) translateY(-20px); }
            50% { transform: translateX(0) translateY(-30px); }
            75% { transform: translateX(-50px) translateY(-10px); }
        }

        .hero-content {
            text-align: center;
            color: white;
            z-index: 1;
            opacity: 0;
            transform: translateY(50px);
            animation: fade-slide-up 1s ease forwards;
        }

        @keyframes fade-slide-up {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero h1 {
            font-size: 4rem;
            margin-bottom: 20px;
            font-weight: 900;
            text-shadow: 3px 3px 6px rgba(0,0,0,0.3);
        }

        .hero p {
            font-size: 1.3rem;
            margin-bottom: 40px;
            opacity: 0;
            animation: fade-slide-up 1s ease 0.3s forwards;
        }

        .hero-btn {
            display: inline-block;
            padding: 15px 40px;
            background: var(--sunset-orange);
            color: white;
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s ease;
            opacity: 0;
            animation: fade-slide-up 1s ease 0.6s forwards;
            letter-spacing: 3px;
        }

        .hero-btn:hover {
            background: #d45a3a;
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(231, 111, 81, 0.4);
        }

        .section {
            padding: 80px 40px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .section-title {
            text-align: center;
            margin-bottom: 60px;
            position: relative;
        }

        .section-title h2 {
            font-size: 2.5rem;
            color: var(--grassland-green);
            margin-bottom: 20px;
        }

        .mongolian-pattern {
            position: relative;
            width: 100px;
            height: 2px;
            background: var(--desert-gold);
            margin: 0 auto;
        }

        .mongolian-pattern::before,
        .mongolian-pattern::after {
            content: '';
            position: absolute;
            top: -4px;
            width: 12px;
            height: 12px;
            border: 2px solid var(--desert-gold);
            border-radius: 50%;
        }

        .mongolian-pattern::before {
            left: -20px;
        }

        .mongolian-pattern::after {
            right: -20px;
        }

        .mongolian-pattern::before {
            box-shadow: 25px 0 0 -2px var(--desert-gold), 50px 0 0 -2px var(--desert-gold);
        }

        .mongolian-pattern::after {
            box-shadow: -25px 0 0 -2px var(--desert-gold), -50px 0 0 -2px var(--desert-gold);
        }

        .why-us {
            background: linear-gradient(135deg, var(--sky-blue) 0%, var(--cloud-white) 100%);
        }

        .why-us-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 40px;
        }

        .why-us-card {
            background: white;
            padding: 40px 30px;
            border-radius: 15px;
            text-align: center;
            position: relative;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .why-us-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(43, 91, 47, 0.15);
        }

        .why-us-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--grassland-green), var(--desert-gold), var(--grassland-green));
        }

        .why-us-card .icon {
            font-size: 3rem;
            color: var(--grassland-green);
            margin-bottom: 20px;
            transition: color 0.3s ease;
        }

        .why-us-card:hover .icon {
            color: var(--sunset-orange);
        }

        .why-us-card h3 {
            font-size: 1.3rem;
            color: var(--dark-green);
            margin-bottom: 15px;
        }

        .why-us-card p {
            color: #666;
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .why-us-bg {
            position: relative;
            overflow: hidden;
        }

        .why-us-bg-image {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }

        .why-us-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(43, 91, 47, 0.7);
            z-index: 1;
        }

        .why-us-bg .icon,
        .why-us-bg h3,
        .why-us-bg p {
            position: relative;
            z-index: 2;
        }

        .why-us-bg .icon {
            color: var(--desert-gold);
        }

        .why-us-bg h3 {
            color: white;
        }

        .why-us-bg p {
            color: rgba(255, 255, 255, 0.9);
        }

        .featured-tours {
            background: var(--cloud-white);
        }

        .tours-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .tour-card {
            perspective: 1000px;
        }

        .tour-card-inner {
            position: relative;
            width: 100%;
            height: 420px;
            transition: transform 0.6s;
            transform-style: preserve-3d;
        }

        .tour-card:hover .tour-card-inner {
            transform: rotateY(180deg);
        }

        .tour-card-front,
        .tour-card-back {
            position: absolute;
            width: 100%;
            height: 100%;
            backface-visibility: hidden;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }

        .tour-card-front {
            background: white;
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .tour-card-back {
            background: linear-gradient(135deg, var(--grassland-green) 0%, var(--dark-green) 100%);
            transform: rotateY(180deg);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 30px;
            color: white;
        }

        .tour-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            filter: grayscale(20%) brightness(95%);
            transition: filter 0.3s ease;
        }

        .tour-card:hover .tour-image {
            filter: grayscale(0%) brightness(100%);
        }

        .tour-image-video {
            width: 100%;
            height: 200px;
            object-fit: cover;
            filter: grayscale(20%) brightness(95%);
            transition: filter 0.3s ease;
        }

        .tour-card:hover .tour-image-video {
            filter: grayscale(0%) brightness(100%);
        }

        .video-wrapper {
            position: relative;
            width: 100%;
            height: 200px;
            overflow: hidden;
        }

        .tour-video {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: grayscale(20%) brightness(95%);
            transition: filter 0.3s ease;
        }

        .tour-card:hover .tour-video {
            filter: grayscale(0%) brightness(100%);
        }

        .play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 50px;
            height: 50px;
            background: rgba(255, 255, 255, 0.8);
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            transition: all 0.3s ease;
            z-index: 10;
        }

        .play-btn:hover {
            background: var(--sunset-orange);
            transform: translate(-50%, -50%) scale(1.1);
        }

        .play-btn i {
            color: var(--grassland-green);
            font-size: 1.2rem;
            margin-left: 3px;
        }

        .play-btn:hover i {
            color: white;
        }

        .tour-video.playing + .play-btn {
            opacity: 0;
            pointer-events: none;
        }

        .tour-info {
            padding: 25px;
        }

        .tour-tags {
            display: flex;
            gap: 10px;
            margin-bottom: 15px;
        }

        .tour-tag {
            padding: 5px 12px;
            background: var(--sky-blue);
            color: var(--grassland-green);
            font-size: 0.75rem;
            border-radius: 20px;
            font-weight: 600;
        }

        .tour-tag.date {
            background: var(--desert-gold);
            color: white;
        }

        .tour-card h3 {
            font-size: 1.4rem;
            color: var(--dark-green);
            margin-bottom: 10px;
        }

        .tour-price {
            font-size: 1.8rem;
            color: var(--sunset-orange);
            font-weight: 700;
            margin-top: 15px;
        }

        .tour-price span {
            font-size: 1rem;
            color: #888;
            font-weight: 400;
        }

        .tour-card-back h4 {
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

        .tour-card-back p {
            text-align: center;
            margin-bottom: 25px;
            opacity: 0.9;
            line-height: 1.8;
        }

        .tour-card-back .btn {
            padding: 10px 30px;
            border: 2px solid white;
            color: white;
            text-decoration: none;
            border-radius: 30px;
            transition: all 0.3s ease;
            font-weight: 600;
        }

        .tour-card-back .btn:hover {
            background: white;
            color: var(--grassland-green);
        }

        .cultural-experience {
            background: linear-gradient(135deg, var(--grassland-green) 0%, var(--dark-green) 100%);
            color: white;
        }

        .cultural-experience .section-title h2 {
            color: white;
        }

        .cultural-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
        }

        .cultural-item {
            text-align: center;
            padding: 30px 20px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 15px;
            transition: all 0.3s ease;
            border: 1px solid rgba(212, 163, 115, 0.2);
        }

        .cultural-item:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-5px);
            border-color: var(--desert-gold);
        }

        .cultural-item .icon {
            font-size: 2.5rem;
            color: var(--desert-gold);
            margin-bottom: 15px;
        }

        .cultural-item-bg {
            position: relative;
            overflow: hidden;
        }

        .cultural-bg-image {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }

        .cultural-item-bg .cultural-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(43, 91, 47, 0.6);
            z-index: 1;
        }

        .cultural-item-bg .icon,
        .cultural-item-bg h4,
        .cultural-item-bg p {
            position: relative;
            z-index: 2;
            color: white;
        }

        .cultural-item h4 {
            font-size: 1rem;
            margin-bottom: 10px;
            letter-spacing: 2px;
        }

        .cultural-item p {
            font-size: 0.85rem;
            opacity: 0.8;
        }

        .about-us {
            background: var(--cloud-white);
        }

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

        .about-image {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: 12px;
            box-shadow: 0 15px 35px rgba(43, 91, 47, 0.15);
        }

        .about-text {
            background: rgba(43, 91, 47, 0.05);
            padding: 30px;
            border-left: 4px solid var(--desert-gold);
            border-radius: 0 12px 12px 0;
        }

        .about-text .subtitle {
            color: var(--desert-gold);
            font-size: 0.9rem;
            letter-spacing: 6px;
            margin-bottom: 15px;
            display: block;
        }

        .about-text h3 {
            font-size: 2rem;
            color: var(--dark-green);
            margin-bottom: 20px;
        }

        .about-text p {
            color: #666;
            margin-bottom: 20px;
            line-height: 1.8;
            font-size: 0.95rem;
        }

        .gold-divider {
            width: 60px;
            height: 2px;
            background: var(--desert-gold);
            margin-top: 25px;
        }

        .why-choose-us {
            background: linear-gradient(135deg, var(--sky-blue) 0%, var(--cloud-white) 100%);
        }

        .choose-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .choose-card {
            background: white;
            padding: 35px 25px;
            border-radius: 12px;
            text-align: center;
            transition: all 0.3s ease;
            position: relative;
        }

        .choose-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px rgba(212, 163, 115, 0.3);
        }

        .choose-card .icon {
            font-size: 2.5rem;
            color: var(--grassland-green);
            margin-bottom: 15px;
            transition: color 0.3s ease;
        }

        .choose-card:hover .icon {
            color: var(--desert-gold);
        }

        .choose-card h4 {
            font-size: 1.1rem;
            color: var(--dark-green);
            margin-bottom: 12px;
            letter-spacing: 2px;
        }

        .choose-card p {
            color: #666;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .faq-section {
            background: var(--cloud-white);
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: white;
            border-radius: 12px;
            margin-bottom: 15px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }

        .faq-question {
            padding: 20px 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: background 0.3s ease;
            position: relative;
        }

        .faq-question::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 25px;
            right: 25px;
            height: 1px;
            background: #eee;
        }

        .faq-question:hover {
            background: rgba(43, 91, 47, 0.03);
        }

        .faq-question h4 {
            font-size: 1rem;
            color: #333;
            font-weight: 500;
            letter-spacing: 1px;
            transition: color 0.3s ease;
        }

        .faq-item.active .faq-question h4 {
            color: var(--desert-gold);
        }

        .faq-toggle {
            width: 24px;
            height: 24px;
            border: 2px solid var(--desert-gold);
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 0.8rem;
            color: var(--desert-gold);
            transition: all 0.3s ease;
        }

        .faq-item.active .faq-toggle {
            background: var(--desert-gold);
            color: white;
        }

        .faq-answer {
            padding: 0 25px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }

        .faq-item.active .faq-answer {
            padding: 20px 25px;
            max-height: 200px;
        }

        .faq-answer p {
            color: #666;
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .contact-section {
            background: var(--sky-blue);
        }

        .contact-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-info {
            background: white;
            padding: 35px;
            border-radius: 12px;
        }

        .contact-image {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin-top: 20px;
        }

        .contact-info h4 {
            font-size: 1.3rem;
            color: var(--dark-green);
            margin-bottom: 25px;
            letter-spacing: 2px;
        }

        .contact-detail {
            display: flex;
            align-items: flex-start;
            margin-bottom: 20px;
        }

        .contact-detail .icon {
            font-size: 1.2rem;
            color: var(--grassland-green);
            margin-right: 15px;
            width: 24px;
            text-align: center;
        }

        .contact-detail p {
            color: #666;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .contact-detail a {
            color: var(--grassland-green);
            text-decoration: none;
            font-weight: 500;
        }

        .contact-map {
            width: 100%;
            height: 200px;
            border-radius: 8px;
            margin-top: 20px;
            border: none;
        }

        .contact-form {
            background: white;
            padding: 35px;
            border-radius: 12px;
        }

        .contact-form h4 {
            font-size: 1.3rem;
            color: var(--dark-green);
            margin-bottom: 25px;
            letter-spacing: 2px;
        }

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

        .form-group label {
            display: block;
            color: #555;
            font-size: 0.9rem;
            margin-bottom: 8px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-family: 'Noto Sans SC', sans-serif;
            font-size: 0.95rem;
            transition: border-color 0.3s ease;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--desert-gold);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }

        .submit-btn {
            width: 100%;
            padding: 14px;
            background: var(--grassland-green);
            color: var(--desert-gold);
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s ease;
            letter-spacing: 2px;
        }

        .submit-btn:hover {
            background: var(--dark-green);
        }

        .success-message {
            display: none;
            padding: 15px;
            background: rgba(43, 91, 47, 0.1);
            color: var(--grassland-green);
            border-radius: 8px;
            margin-top: 15px;
            text-align: center;
        }

        .success-message.show {
            display: block;
        }

        footer {
            background: var(--dark-green);
            color: white;
            padding: 40px;
            text-align: center;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-content h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--desert-gold);
        }

        .footer-content p {
            margin-bottom: 20px;
            opacity: 0.8;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 30px;
            list-style: none;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: white;
            text-decoration: none;
            opacity: 0.8;
            transition: opacity 0.3s ease;
        }

        .footer-links a:hover {
            opacity: 1;
            color: var(--desert-gold);
        }

        .social-icons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 30px;
        }

        .social-icons a {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            color: white;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .social-icons a:hover {
            background: var(--desert-gold);
            color: var(--dark-green);
        }

        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            font-size: 0.85rem;
            opacity: 0.6;
        }

        @media (max-width: 768px) {
            .navbar {
                padding: 15px 20px;
            }

            .nav-links {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background: var(--grassland-green);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 40px;
                transition: left 0.3s ease;
            }

            .nav-links.active {
                left: 0;
            }

            .menu-toggle {
                display: block;
            }

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

            .hero p {
                font-size: 1rem;
            }

            .about-content {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .about-image {
                height: 280px;
            }

            .about-text {
                border-left: none;
                border-top: 4px solid var(--desert-gold);
                border-radius: 12px 12px 0 0;
            }

            .contact-content {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .section-title h2 {
                font-size: 1.8rem;
            }
        }

        .fade-in-up {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.6s ease;
        }

        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .fade-in-left {
            opacity: 0;
            transform: translateX(-50px);
            transition: all 0.6s ease;
        }

        .fade-in-left.visible {
            opacity: 1;
            transform: translateX(0);
        }

        .fade-in-right {
            opacity: 0;
            transform: translateX(50px);
            transition: all 0.6s ease;
        }

        .fade-in-right.visible {
            opacity: 1;
            transform: translateX(0);
        }

        html {
            scroll-behavior: smooth;
        }
    </style>
</head>
<body>
    <header id="header">
        <nav class="navbar" id="navbar" role="navigation" aria-label="主导航">
            <div class="navbar-content">
                <div class="logo">南京国旅·<span>内蒙古分公司</span></div>
                <ul class="nav-links" id="navLinks" aria-label="导航菜单">
                    <li><a href="#home" aria-label="首页">首页</a></li>
                    <li><a href="#tours" aria-label="草原定制">草原定制</a></li>
                    <li><a href="#tours" aria-label="沙漠探险">沙漠探险</a></li>
                    <li><a href="#culture" aria-label="民族文化体验">民族文化体验</a></li>
                    <li><a href="#about" aria-label="关于我们">关于我们</a></li>
                    <li><a href="#choose" aria-label="为什么选择我们">为什么选择我们</a></li>
                    <li><a href="#faq" aria-label="常见问答">常见问答</a></li>
                    <li><a href="#contact" aria-label="联系我们">联系我们</a></li>
                </ul>
                <button class="menu-toggle" id="menuToggle" aria-label="切换菜单" aria-expanded="false">
                    <i class="fas fa-bars"></i>
                </button>
            </div>
        </nav>
    </header>

    <main id="main" role="main">
        <section class="hero" id="home" aria-labelledby="hero-title">
            <div class="hero-bg"></div>
            <video class="hero-video" autoplay muted loop playsinline poster="11.jpg">
                <source src="01.mp4" type="video/mp4">
                <img src="11.jpg" alt="内蒙古草原风光" loading="lazy">
            </video>
            <div class="hero-overlay"></div>
            <div class="cloud cloud-1"></div>
            <div class="cloud cloud-2"></div>
            <div class="cloud cloud-3"></div>
            <div class="cloud cloud-4"></div>
            <div class="hero-content">
                <h1>纵马北疆，心驰草原</h1>
                <p>南京国旅品质保障 · 内蒙古本地深度服务</p>
                <a href="#tours" class="hero-btn">立即唤醒草原梦</a>
            </div>
        </section>

        <section class="why-us section" id="why-us">
            <div class="section-title">
                <h2>核心优势</h2>
                <div class="mongolian-pattern"></div>
            </div>
            <div class="why-us-grid">
                <div class="why-us-card why-us-bg fade-in-up">
                    <img src="11.jpg" alt="内蒙古草原牧场风光，蓝天白云下的绿色牧场" class="why-us-bg-image" loading="lazy" width="800" height="600">
                    <div class="why-us-overlay"></div>
                    <div class="icon"><i class="fas fa-tree"></i></div>
                    <h3>100+ 专属牧场合作</h3>
                    <p>与内蒙古优质牧场深度合作，为您提供独一无二的草原体验，感受最纯正的蒙古族风情。</p>
                </div>
                <div class="why-us-card why-us-bg fade-in-up">
                    <img src="12.jpg" alt="内蒙古草原纯净自然风光，无购物纯玩旅行体验" class="why-us-bg-image" loading="lazy" width="800" height="600">
                    <div class="why-us-overlay"></div>
                    <div class="icon"><i class="fas fa-heart"></i></div>
                    <h3>0购物纯玩承诺</h3>
                    <p>坚守国旅品质，全程无购物环节，让您全身心沉浸在草原的壮美与宁静之中。</p>
                </div>
                <div class="why-us-card why-us-bg fade-in-up">
                    <img src="13.jpg" alt="蒙古包露营地，夜晚星空美景" class="why-us-bg-image" loading="lazy" width="800" height="600">
                    <div class="why-us-overlay"></div>
                    <div class="icon"><i class="fas fa-star"></i></div>
                    <h3>蒙古包星空露营</h3>
                    <p>夜宿传统蒙古包，仰望璀璨星空，聆听草原之夜的静谧与悠远，留下难忘的记忆。</p>
                </div>
            </div>
        </section>

        <section class="featured-tours section" id="tours">
            <div class="section-title">
                <h2>精品线路推荐</h2>
                <div class="mongolian-pattern"></div>
            </div>
            <div class="tours-grid">
                <div class="tour-card fade-in-up">
                    <div class="tour-card-inner">
                        <div class="tour-card-front">
                            <div class="video-wrapper">
                                <video class="tour-video" poster="11.jpg" loop playsinline>
                                    <source src="02.mp4" type="video/mp4">
                                    <img src="11.jpg" alt="锡林郭勒草原深度游" loading="lazy">
                                </video>
                                <div class="play-btn"><i class="fas fa-play"></i></div>
                            </div>
                            <div class="tour-info">
                                <div class="tour-tags">
                                    <span class="tour-tag">6天6晚</span>
                                    <span class="tour-tag date">精品小包车</span>
                                </div>
                                <h3>锡林郭勒草原深度游</h3>
                                <p>深入锡林郭勒草原腹地，体验纯正游牧生活</p>
                                <div class="tour-price">¥7,980<span>/人</span></div>
                            </div>
                        </div>
                        <div class="tour-card-back">
                            <h4>行程亮点</h4>
                            <p>锡林九曲、元上都遗址、乌珠穆沁草原、蒙古汗城、达里诺尔湖</p>
                            <a href="#contact" class="btn">立即咨询</a>
                        </div>
                    </div>
                </div>

                <div class="tour-card fade-in-up">
                    <div class="tour-card-inner">
                        <div class="tour-card-front">
                            <div class="video-wrapper">
                                <video class="tour-video" poster="12.jpg" loop playsinline>
                                    <source src="03.mp4" type="video/mp4">
                                    <img src="12.jpg" alt="企业团建之旅" loading="lazy">
                                </video>
                                <div class="play-btn"><i class="fas fa-play"></i></div>
                            </div>
                            <div class="tour-info">
                                <div class="tour-tags">
                                    <span class="tour-tag">企业定制</span>
                                    <span class="tour-tag date">团队专属</span>
                                </div>
                                <h3>开启一场超然团建之旅</h3>
                                <p>在茫茫沙漠中，打造独特的团队凝聚力体验</p>
                                <div class="tour-price">企业定制<span></span></div>
                            </div>
                        </div>
                        <div class="tour-card-back">
                            <h4>团建特点</h4>
                            <p>• 自然风光：草原/沙漠/森林多场景选择<br>• 专业实施：资深团建导师全程陪同<br>• 定制服务：根据企业文化量身设计</p>
                            <h4 style="margin-top:15px;">预期效果</h4>
                            <p>• 团队凝聚力提升<br>• 领导力实战训练<br>• 创新思维激发</p>
                            <h4 style="margin-top:15px;">活动意义</h4>
                            <p>• 企业文化建设<br>• 员工激励关怀<br>• 企业形象提升</p>
                            <a href="#contact" class="btn">立即咨询</a>
                        </div>
                    </div>
                </div>

                <div class="tour-card fade-in-up">
                    <div class="tour-card-inner">
                        <div class="tour-card-front">
                            <div class="video-wrapper">
                                <video class="tour-video" poster="04.png" loop playsinline>
                                    <source src="03.mp4" type="video/mp4">
                                    <img src="04.png" alt="草原上的越野车，内蒙古全境包车旅游" loading="lazy">
                                </video>
                                <div class="play-btn"><i class="fas fa-play"></i></div>
                            </div>
                            <div class="tour-info">
                                <div class="tour-tags">
                                    <span class="tour-tag">定制路线</span>
                                    <span class="tour-tag date">省心出行</span>
                                </div>
                                <h3>内蒙古全境包车/租车</h3>
                                <p>专属座驾，随走随停，深度探索草原秘境</p>
                                <div class="tour-price">私人定制<span></span></div>
                            </div>
                        </div>
                        <div class="tour-card-back">
                            <h4>五心原则</h4>
                            <p>• 放心：正规车辆，保险齐全<br>• 省心：专业司机，全程服务<br>• 舒心：舒适座驾，宽敞空间<br>• 贴心：行程定制，灵活调整<br>• 开心：安全保障，旅途无忧</p>
                            <a href="#contact" class="btn">立即咨询</a>
                        </div>
                    </div>
                </div>
            </div>
        </section>

        <section class="cultural-experience section" id="culture">
            <div class="section-title">
                <h2>内蒙古文化符号</h2>
                <div class="mongolian-pattern"></div>
            </div>
            <div class="cultural-grid">
                <div class="cultural-item cultural-item-bg fade-in-up">
                    <img src="05.jpg" alt="蒙古族传统奶茶制作过程，手工熬制咸奶茶" class="cultural-bg-image" loading="lazy" width="600" height="450">
                    <div class="cultural-overlay"></div>
                    <div class="icon"><i class="fas fa-coffee"></i></div>
                    <h4>制作奶茶</h4>
                    <p>亲手熬制蒙古族传统咸奶茶，体验草原待客之道</p>
                </div>
                <div class="cultural-item cultural-item-bg fade-in-up">
                    <img src="06.jpg" alt="那达慕大会现场，蒙古族传统赛马摔跤射箭比赛" class="cultural-bg-image" loading="lazy" width="600" height="450">
                    <div class="cultural-overlay"></div>
                    <div class="icon"><i class="fas fa-users"></i></div>
                    <h4>那达慕观赛</h4>
                    <p>观赏蒙古族传统盛会，感受赛马、摔跤、射箭的激情</p>
                </div>
                <div class="cultural-item cultural-item-bg fade-in-up">
                    <img src="07.jpg" alt="蒙古族骑射文化体验，草原策马奔腾" class="cultural-bg-image" loading="lazy" width="600" height="450">
                    <div class="cultural-overlay"></div>
                    <div class="icon"><i class="fas fa-horse-head"></i></div>
                    <h4>骑射体验</h4>
                    <p>在辽阔草原上策马奔腾，体验蒙古族骑射文化</p>
                </div>
                <div class="cultural-item cultural-item-bg fade-in-up">
                    <img src="08.jpg" alt="星空摄影" class="cultural-bg-image" loading="lazy" width="600" height="450">
                    <div class="cultural-overlay"></div>
                    <div class="icon"><i class="fas fa-camera"></i></div>
                    <h4>星空摄影</h4>
                    <p>在草原深处拍摄璀璨星空，留下难忘的视觉记忆</p>
                </div>
            </div>
        </section>

        <section class="about-us section" id="about">
            <div class="section-title">
                <h2>关于我们</h2>
                <div class="mongolian-pattern"></div>
            </div>
            <div class="about-content">
                <div class="about-left fade-in-left">
                    <img src="09.jpg" alt="蒙古族文化元素，马头琴与蒙古包剪影" class="about-image" loading="lazy" width="1200" height="800">
                </div>
                <div class="about-text fade-in-right">
                    <span class="subtitle">—— 国旅品质 · 北疆深耕 ——</span>
                    <h3>关于南京国旅内蒙古分公司</h3>
                    <p>南京国旅内蒙古分公司隶属于南京国际旅行社，依托总部40余年出境游经验，深度扎根内蒙古本地资源。</p>
                    <p>我们拥有精通蒙汉双语的资深领队团队，与上百家牧场、蒙古包营地建立直供合作，确保您体验到最纯正的游牧文化。</p>
                    <p>从呼伦贝尔到阿拉善，每一条线路均由产品经理实地踩线，拒绝走马观花，让每一次出发都成为一生的记忆。</p>
                    <div class="gold-divider"></div>
                </div>
            </div>
        </section>

        <section class="why-choose-us section" id="choose">
            <div class="section-title">
                <h2>为什么选择我们</h2>
                <div class="mongolian-pattern"></div>
                <p style="color: var(--desert-gold); margin-top: 15px; letter-spacing: 2px;">—— 六大保障，让旅行更安心 ——</p>
            </div>
            <div class="choose-grid">
                <div class="choose-card fade-in-up" style="animation-delay: 0s;">
                    <div class="icon"><i class="fas fa-shield-halved"></i></div>
                    <h4>老牌信誉 · 透明消费</h4>
                    <p>无隐形购物，签正规旅游合同</p>
                </div>
                <div class="choose-card fade-in-up" style="animation-delay: 0.1s;">
                    <div class="icon"><i class="fas fa-building"></i></div>
                    <h4>本地直营 · 拒绝转包</h4>
                    <p>全部线路由分公司自主运营</p>
                </div>
                <div class="choose-card fade-in-up" style="animation-delay: 0.2s;">
                    <div class="icon"><i class="fas fa-person-hiking"></i></div>
                    <h4>资深领队 · 蒙汉双语</h4>
                    <p>熟悉草原民俗，能讲历史故事</p>
                </div>
                <div class="choose-card fade-in-up" style="animation-delay: 0.3s;">
                    <div class="icon"><i class="fas fa-star"></i></div>
                    <h4>专属营地 · 星空蒙古包</h4>
                    <p>独家合作营地，远离游客喧嚣</p>
                </div>
                <div class="choose-card fade-in-up" style="animation-delay: 0.4s;">
                    <div class="icon"><i class="fas fa-users"></i></div>
                    <h4>灵活定制 · 小团出行</h4>
                    <p>2人即可成团，行程自由调整</p>
                </div>
                <div class="choose-card fade-in-up" style="animation-delay: 0.5s;">
                    <div class="icon"><i class="fas fa-phone"></i></div>
                    <h4>24h管家 · 紧急响应</h4>
                    <p>全程在线客服，解决突发问题</p>
                </div>
            </div>
        </section>

        <section class="faq-section section" id="faq">
            <div class="section-title">
                <h2>常见问题</h2>
                <div class="mongolian-pattern"></div>
                <p style="color: var(--desert-gold); margin-top: 15px; letter-spacing: 2px;">—— 您关心的问题，我们都想到了 ——</p>
            </div>
            <div class="faq-container">
                <div class="faq-item">
                    <div class="faq-question">
                        <h4>去草原旅行最佳季节是什么时候？</h4>
                        <div class="faq-toggle">+</div>
                    </div>
                    <div class="faq-answer">
                        <p>每年6月至9月是草原水草最丰美的时节，气候凉爽，适合避暑。7-8月有那达慕大会。</p>
                    </div>
                </div>
                <div class="faq-item">
                    <div class="faq-question">
                        <h4>内蒙古旅游安全吗？适合老人小孩吗？</h4>
                        <div class="faq-toggle">+</div>
                    </div>
                    <div class="faq-answer">
                        <p>非常安全。我们提供的线路均为成熟景区，配备经验丰富的导游，可定制适合家庭的慢节奏行程。</p>
                    </div>
                </div>
                <div class="faq-item">
                    <div class="faq-question">
                        <h4>行程中包含购物店吗？</h4>
                        <div class="faq-toggle">+</div>
                    </div>
                    <div class="faq-answer">
                        <p>我们是纯玩无购物承诺，所有线路均不安排任何购物点，如有违规，双倍赔偿。</p>
                    </div>
                </div>
                <div class="faq-item">
                    <div class="faq-question">
                        <h4>可以单独定制行程吗？</h4>
                        <div class="faq-toggle">+</div>
                    </div>
                    <div class="faq-answer">
                        <p>当然可以。2人起即可独立成团，您可自由选择天数、景点和住宿标准。</p>
                    </div>
                </div>
                <div class="faq-item">
                    <div class="faq-question">
                        <h4>付款方式有哪些？需要提前多久预订？</h4>
                        <div class="faq-toggle">+</div>
                    </div>
                    <div class="faq-answer">
                        <p>支持线上支付、对公转账或到店付款。旺季建议提前15天预订，以确保蒙古包房源。</p>
                    </div>
                </div>
            </div>
        </section>

        <section class="contact-section section" id="contact">
            <div class="section-title">
                <h2>联系我们</h2>
                <div class="mongolian-pattern"></div>
            </div>
            <div class="contact-content">
                <div class="contact-info fade-in-left">
                    <h4>联系信息</h4>
                    <div class="contact-detail">
                        <div class="icon"><i class="fas fa-map-marker-alt"></i></div>
                        <p>内蒙古自治区呼和浩特市赛罕区昭乌达路街道千家和众新家园商铺31-104</p>
                    </div>
                    <div class="contact-detail">
                        <div class="icon"><i class="fas fa-phone"></i></div>
                        <p><a href="tel:0471-3683159">0471-3683 159</a></p>
                    </div>
                    <div class="contact-detail">
                        <div class="icon"><i class="fas fa-mobile-alt"></i></div>
                        <p><a href="tel:15598214314">15598214314</a></p>
                    </div>
                    <div class="contact-detail">
                        <div class="icon"><i class="fas fa-envelope"></i></div>
                        <p><a href="mailto:nggl_nmg@163.com">nggl_nmg@163.com</a></p>
                    </div>
                    <div class="contact-detail">
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                        <p>微信/WeChat：njgl_nmg</p>
                    </div>
                    <div class="contact-detail">
                        <div class="icon"><i class="fas fa-clock"></i></div>
                        <p>周一至周日 8:00-22:00</p>
                    </div>
                    <img src="10.jpg" alt="联系方式" class="contact-image" loading="lazy" width="600" height="400">
                </div>
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                    <h4>在线咨询</h4>
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                        <div class="form-group">
                            <label for="name" id="name-label">姓名 <span aria-hidden="true">*</span></label>
                            <input type="text" id="name" name="name" required placeholder="请输入您的姓名" aria-required="true" aria-describedby="name-label" autocomplete="name">
                        </div>
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                            <input type="tel" id="phone" name="phone" required placeholder="请输入11位手机号码" pattern="[0-9]{11}" aria-required="true" aria-describedby="phone-label" autocomplete="tel">
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                            <label for="message" id="message-label">留言内容</label>
                            <textarea id="message" name="message" placeholder="请输入您的问题或需求" rows="4" aria-describedby="message-label"></textarea>
                        </div>
                        <button type="submit" class="submit-btn" aria-label="提交咨询表单">提交咨询</button>
                    </form>
                    <div class="success-message" id="successMessage">感谢您的咨询，我们将在2小时内回复！</div>
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            <h3>南京国旅·内蒙古分公司</h3>
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            });
        }, observerOptions);

        document.querySelectorAll('.fade-in-up, .fade-in-left, .fade-in-right').forEach(el => {
            observer.observe(el);
        });

        const faqItems = document.querySelectorAll('.faq-item');
        faqItems.forEach(item => {
            const question = item.querySelector('.faq-question');
            const toggle = item.querySelector('.faq-toggle');
            
            question.addEventListener('click', () => {
                faqItems.forEach(otherItem => {
                    if (otherItem !== item) {
                        otherItem.classList.remove('active');
                        otherItem.querySelector('.faq-toggle').textContent = '+';
                    }
                });
                
                item.classList.toggle('active');
                toggle.textContent = item.classList.contains('active') ? '−' : '+';
            });
        });

        const contactForm = document.getElementById('contactForm');
        const successMessage = document.getElementById('successMessage');
        
        contactForm.addEventListener('submit', (e) => {
            e.preventDefault();
            
            const phoneInput = document.getElementById('phone');
            const phoneValue = phoneInput.value;
            
            if (phoneValue.length !== 11 || isNaN(phoneValue)) {
                alert('请输入有效的11位手机号码');
                return;
            }
            
            successMessage.classList.add('show');
            contactForm.reset();
            
            setTimeout(() => {
                successMessage.classList.remove('show');
            }, 5000);
        });

        const playBtns = document.querySelectorAll('.play-btn');
        playBtns.forEach(btn => {
            btn.addEventListener('click', () => {
                const video = btn.parentElement.querySelector('.tour-video');
                if (video.paused) {
                    video.play();
                    video.classList.add('playing');
                } else {
                    video.pause();
                    video.classList.remove('playing');
                }
            });
        });

        document.querySelectorAll('.tour-video').forEach(video => {
            video.addEventListener('click', () => {
                if (video.paused) {
                    video.play();
                    video.classList.add('playing');
                } else {
                    video.pause();
                    video.classList.remove('playing');
                }
            });
            video.addEventListener('ended', () => {
                video.classList.remove('playing');
            });
        });
    </script>
</body>
</html>