:root {
            --primary-orange: #FF9800;
            --hover-orange: #E68A00;
            --bg-light: #fdfdfd;
            --text-dark: #333;
            --text-grey: #666;
            --border-color: #eeeeee;
            --container-max-width: 1480px;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { 
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; 
            color: var(--text-dark); 
            line-height: 1.5; 
            background: #fff; 
        }

        /* --- 1. 布局容器 --- */
        .alignment-container {
            max-width: var(--container-max-width);
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        /* --- 2. 顶部工具栏 (Top Bar) --- */
        .top-bar { 
            background: var(--bg-light); 
            border-bottom: 1px solid var(--border-color); 
            padding: 10px 0; 
            font-size: 13px; 
            position: relative;
            z-index: 1001;
        }
        .top-left { display: flex; gap: 30px; align-items: center; }
        .contact-item { color: var(--text-grey); text-decoration: none; transition: 0.3s; display: flex; align-items: center; gap: 8px; }
        .contact-item:hover { color: var(--primary-orange); }

        /* WhatsApp 图标 */
        .wa-icon::before {
            content: "";
            display: inline-block;
            width: 16px;
            height: 16px;
            background-color: currentColor;
            mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3e%3cpath d='M380.9 97.1C339 55.1 283.2 32 223.9 32c-122.4 0-222 99.6-222 222 0 39.1 10.2 77.3 29.6 111L0 480l117.7-30.9c32.4 17.7 68.9 27 106.1 27h.1c122.3 0 224.1-99.6 224.1-222 0-59.3-25.2-115-67.1-157zm-157 341.6c-33.1 0-65.6-8.9-94-25.7l-6.7-4-69.8 18.3L72 359.2l-4.4-7c-18.5-29.4-28.2-63.3-28.2-98.2 0-101.7 82.8-184.5 184.6-184.5 49.3 0 95.6 19.2 130.4 54.1 34.8 34.9 56.2 81.2 56.1 130.5 0 101.8-84.9 184.6-186.6 184.6zm101.2-138.2c-5.5-2.8-32.8-16.2-37.9-18-5.1-1.9-8.8-2.8-12.5 2.8-3.7 5.6-14.3 18-17.6 21.8-3.2 3.7-6.5 4.2-12 1.4-5.5-2.8-23.4-8.6-44.6-27.5-16.4-14.7-27.5-32.8-30.7-38.3-3.2-5.6-.3-8.6 2.5-11.4 2.5-2.5 5.5-6.5 8.3-9.7 2.8-3.2 3.7-5.5 5.6-9.2 1.9-3.7.9-6.9-.5-9.7-1.4-2.8-12.5-30.1-17.1-41.2-4.5-10.8-9.1-9.3-12.5-9.5-3.2-.2-6.9-.2-10.6-.2-3.7 0-9.7 1.4-14.8 6.9-5.1 5.6-19.4 19-19.4 46.3 0 27.3 19.9 53.7 22.6 57.4 2.8 3.7 39.1 59.7 94.8 83.8 13.2 5.8 23.5 9.2 31.6 11.8 13.3 4.2 25.4 3.6 35 2.2 10.7-1.5 32.8-13.4 37.4-26.4 4.6-13 4.6-24.1 3.2-26.4-1.3-2.5-5-3.9-10.5-6.6z'/%3e%3c/svg%3e") no-repeat center;
            -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3e%3cpath d='M380.9 97.1C339 55.1 283.2 32 223.9 32c-122.4 0-222 99.6-222 222 0 39.1 10.2 77.3 29.6 111L0 480l117.7-30.9c32.4 17.7 68.9 27 106.1 27h.1c122.3 0 224.1-99.6 224.1-222 0-59.3-25.2-115-67.1-157zm-157 341.6c-33.1 0-65.6-8.9-94-25.7l-6.7-4-69.8 18.3L72 359.2l-4.4-7c-18.5-29.4-28.2-63.3-28.2-98.2 0-101.7 82.8-184.5 184.6-184.5 49.3 0 95.6 19.2 130.4 54.1 34.8 34.9 56.2 81.2 56.1 130.5 0 101.8-84.9 184.6-186.6 184.6zm101.2-138.2c-5.5-2.8-32.8-16.2-37.9-18-5.1-1.9-8.8-2.8-12.5 2.8-3.7 5.6-14.3 18-17.6 21.8-3.2 3.7-6.5 4.2-12 1.4-5.5-2.8-23.4-8.6-44.6-27.5-16.4-14.7-27.5-32.8-30.7-38.3-3.2-5.6-.3-8.6 2.5-11.4 2.5-2.5 5.5-6.5 8.3-9.7 2.8-3.2 3.7-5.5 5.6-9.2 1.9-3.7.9-6.9-.5-9.7-1.4-2.8-12.5-30.1-17.1-41.2-4.5-10.8-9.1-9.3-12.5-9.5-3.2-.2-6.9-.2-10.6-.2-3.7 0-9.7 1.4-14.8 6.9-5.1 5.6-19.4 19-19.4 46.3 0 27.3 19.9 53.7 22.6 57.4 2.8 3.7 39.1 59.7 94.8 83.8 13.2 5.8 23.5 9.2 31.6 11.8 13.3 4.2 25.4 3.6 35 2.2 10.7-1.5 32.8-13.4 37.4-26.4 4.6-13 4.6-24.1 3.2-26.4-1.3-2.5-5-3.9-10.5-6.6z'/%3e%3c/svg%3e") no-repeat center;
            mask-size: contain;
        }

        /* --- 3. 导航页眉 (Header) --- */
        header { 
            background: #fff; 
            position: sticky; 
            top: 0; 
            z-index: 1000; 
            box-shadow: 0 2px 10px rgba(0,0,0,0.05); 
        }
        .nav-wrapper { height: 90px; }
        .logo img { height: 55px; width: auto; display: block; }

        /* PC 菜单 */
        .desktop-menu { display: flex; list-style: none; height: 100%; align-items: center; }
        .nav-item { position: relative; height: 100%; display: flex; align-items: center; }
        .nav-link { text-decoration: none; color: var(--text-dark); font-weight: 700; font-size: 16px; padding: 0 20px; transition: 0.3s; }
        .nav-item:hover > .nav-link { color: var(--primary-orange); }

        .dropdown {
            position: absolute; top: 100%; left: 0; background: #fff; list-style: none; padding: 10px 0; min-width: 220px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.12); opacity: 0; visibility: hidden; transform: translateY(10px); transition: 0.3s;
        }
        .nav-item:hover > .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
        .dropdown a { display: block; padding: 12px 20px; color: #444; text-decoration: none; font-size: 14px; }
        .dropdown a:hover { background: #fffcf5; color: var(--primary-orange); }

        .btn-inquiry {
            background: var(--primary-orange); color: #fff !important; text-decoration: none;
            height: 42px; line-height: 42px; padding: 0 25px; border-radius: 40px; font-weight: 700;
        }

        /* --- 4. 移动端自适应 --- */
        @media (max-width: 1024px) {
            /* 置顶 WA 栏：橙色背景 + 白色文字 */
            .top-bar { 
                position: fixed; top: 0; left: 0; width: 100%; 
                background: var(--primary-orange); 
                padding: 8px 0; border: none;
                height: 40px;
                display: flex;
                align-items: center;
            }
            .top-bar-container { justify-content: center !important; }
            .top-right, .contact-item:not(.wa-only) { display: none !important; }
            
            .contact-item.wa-only { 
                color: #ffffff !important; 
                font-size: 14px; 
                font-weight: 700;
            }

            /* 调整 Header 位置防止重叠 */
            header { position: fixed; top: 40px; left: 0; width: 100%; } 
            .nav-wrapper { height: 60px; padding: 0 15px; }
            .logo img { height: 35px; }
            
            .desktop-menu, .btn-inquiry { display: none !important; }
            .mobile-toggle { display: block; font-size: 28px; color: var(--primary-orange); cursor: pointer; }

            /* 全屏抽屉式菜单 */
            .mobile-drawer {
                position: fixed; top: 0; right: -100%; width: 100%; 
                height: 100%; background: #fff; z-index: 2000; transition: 0.4s ease;
                display: flex; flex-direction: column;
            }
            .mobile-drawer.active { right: 0; }

            /* 修正：抽屉头部红框区域高度 */
            .drawer-header { 
                height: 60px; /* 控制此处高度 */
                padding: 0 20px; 
                display: flex; 
                align-items: center; 
                justify-content: flex-end; 
                border-bottom: 1px solid #f0f0f0;
                flex-shrink: 0;
            }
            .close-btn { 
                font-size: 35px; 
                cursor: pointer; 
                color: var(--primary-orange); 
                padding: 5px;
                line-height: 1;
            }

            .drawer-body { flex: 1; overflow-y: auto; }

            /* 手风琴菜单项 */
            .m-link { 
                display: flex; justify-content: space-between; align-items: center;
                padding: 18px 25px; color: var(--text-dark); text-decoration: none; 
                font-weight: 700; border-bottom: 1px solid #f9f9f9; 
            }
            /* 三角形居右 */
            .toggle-sub span { 
                font-size: 10px; color: #ccc; transition: 0.3s;
            }
            .m-sub { list-style: none; background: #fafafa; display: none; }
            .m-sub.active { display: block; }
            .m-sub .m-link { padding-left: 45px; font-weight: 500; background: #fdfdfd; justify-content: flex-start; }
        }
/* 链接悬停效果 */
.footer-links a:hover,
.footer-contact li:hover span,
.social-icons a:hover {
    color: #ffffff !important;
    transform: translateX(3px);
}
.footer-links a i,
.social-icons a {
    transition: all 0.3s ease;
}
.social-icons a:hover {
    color: #ffaa00 !important;
    transform: translateY(-3px);
}

/* 响应式布局优化 */
@media screen and (max-width: 1200px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 30px !important;
    }
}
@media screen and (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr !important;
        gap: 40px !important;
    }
    .footer-container {
        padding: 40px 20px 20px !important;
    }
    .footer-title {
        margin-bottom: 20px !important;
    }
    .social-icons {
        text-align: center;
    }
}
@media screen and (max-width: 480px) {
    .footer-contact li {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 5px !important;
    }
}