@charset "utf-8";
/* CSS Document */

              /* 顶部导航栏 */
        header {
            background-color: var(--white);
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

        .logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary-color);
            letter-spacing: 1px;
        }

        .logo img {
            height: 42px;
            width: auto;
            display: block;
        }

        .logo span {
            color: var(--highlight-color);
        }

        .nav-menu {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .nav-link {
            font-weight: 500;
            color: var(--text-dark);
            transition: var(--transition);
            padding: 8px 0;
            position: relative;
            font-size: 15px;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--highlight-color);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--highlight-color);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .lang-btn, .btn-quote {
            padding: 9px 18px;
            border-radius: 4px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
            white-space: nowrap;
        }

        .lang-btn {
            background: transparent;
            border: 1px solid var(--primary-color);
            color: var(--primary-color);
            text-decoration: none;
            line-height: 1.4;
        }

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

        .btn-quote {
            background: var(--highlight-color);
            color: var(--white);
            border: none;
        }

        .btn-quote:hover {
            background: var(--accent-color);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--primary-color);
            transition: var(--transition);
        }

        /* 移动端导航折叠（自 footer.css 迁入） */
        @media (max-width: 768px) {
            .menu-toggle { display: flex; }
            .nav-menu {
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                flex-direction: column;
                align-items: flex-start;
                padding: 20px;
                box-shadow: 0 5px 10px rgba(0,0,0,0.1);
                display: none;
            }
            .nav-menu.active { display: flex; }
            .nav-actions { margin-left: auto; margin-right: 15px; }
        }