Mega Menu 组件

<nav class="relative bg-[#1a202c] dark:bg-[#0e131d] shadow-lg">
    <div class="max-w-7xl mx-auto px-4">
        <div class="flex justify-between h-16">
            <div class="flex">
                <div class="flex-shrink-0 flex items-center">
                    <a href="#" class="text-white text-2xl font-bold">Dashboard</a>
                </div>
                <div class="hidden md:ml-6 md:flex md:space-x-8">
                    <a href="#" class="border-b-2 border-indigo-500 text-white dark:text-gray-300 px-3 py-2 text-sm font-medium">Home</a>
                    <a href="#" class="text-gray-300 dark:text-gray-500 hover:border-gray-300 hover:text-white dark:hover:text-gray-300 px-3 py-2 text-sm font-medium">Analytics</a>
                    <a href="#" class="text-gray-300 dark:text-gray-500 hover:border-gray-300 hover:text-white dark:hover:text-gray-300 px-3 py-2 text-sm font-medium">Reports</a>
                    <div class="relative group">
                        <button class="text-gray-300 dark:text-gray-500 hover:border-gray-300 hover:text-white dark:hover:text-gray-300 px-3 py-2 text-sm font-medium flex items-center">
                            Products
                            <svg class="ml-2 h-5 w-5 text-gray-300" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" aria-hidden="true">
                                <path fill-rule="evenodd" d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z" clip-rule="evenodd" />
                            </svg>
                        </button>
                        <div class="absolute z-10 -ml-4 mt-3 transform px-2 w-screen max-w-md sm:px-0 lg:ml-0 lg:left-1/2 lg:-translate-x-1/2 hidden group-hover:block">
                            <div class="rounded-lg shadow-lg ring-1 ring-black ring-opacity-5 overflow-hidden">
                                <div class="relative grid gap-6 bg-gray-800 dark:bg-gray-900 px-5 py-6 sm:gap-8 sm:p-8">
                                    <a href="#" class="flex items-start -m-3 p-3 rounded-lg hover:bg-gray-700 dark:hover:bg-gray-800">
                                        <div class="flex-shrink-0 h-6 w-6 text-indigo-400">
                                            <!-- Heroicon name: light bulb -->
                                            <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                                                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M9.663 17h4.673M12 20v-3m0 0l-1.673-1.673M12 17l1.673-1.673M11 10V6m0 0L8.327 7.673M11 6l1.673 1.673m-1.673 4h4.673" />
                                            </svg>
                                        </div>
                                        <div class="ml-4">
                                            <p class="text-base font-medium text-white">Product A</p>
                                            <p class="mt-1 text-sm text-gray-400">Description for Product A.</p>
                                        </div>
                                    </a>
                                    <a href="#" class="flex items-start -m-3 p-3 rounded-lg hover:bg-gray-700 dark:hover:bg-gray-800">
                                        <div class="flex-shrink-0 h-6 w-6 text-indigo-400">
                                            <!-- Heroicon name: light bulb -->
                                            <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                                                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M12 6V4m0 2a2 2 0 100 4m0-4a2 2 0 110 4m-6 8a2 2 0 100-4m0 4a2 2 0 110-4m0 4v2m0-6V4m6 6v10m6-2a2 2 0 100-4m0 4a2 2 0 110-4m0 4v2m0-6V4" />
                                            </svg>
                                        </div>
                                        <div class="ml-4">
                                            <p class="text-base font-medium text-white">Product B</p>
                                            <p class="mt-1 text-sm text-gray-400">Description for Product B.</p>
                                        </div>
                                    </a>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
            <div class="hidden md:ml-6 md:flex md:items-center">
                <button class="bg-gray-700 dark:bg-gray-800 p-1 rounded-full text-gray-400 hover:text-white focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-gray-800 focus:ring-white">
                    <span class="sr-only">View notifications</span>
                    <!-- Heroicon name: bell -->
                    <svg class="h-6 w-6" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" aria-hidden="true">
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M15 17h5l-1.405-1.405A2.032 2.032 0 0118 14.158V11a6.002 6.002 0 00-4-5.659V5a2 2 0 10-4 0v.341C7.67 6.165 6 8.388 6 11v3.159c0 .538-.214 1.055-.595 1.436L4 17h5m6 0v1a3 3 0 11-6 0v-1m6 0H9" />
                    </svg>
                </button>
                <div class="ml-3 relative">
                    <div>
                        <button type="button" class="bg-gray-800 flex text-sm rounded-full focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-gray-800 focus:ring-white" id="user-menu-button" aria-expanded="false" aria-haspopup="true">
                            <span class="sr-only">Open user menu</span>
                            <img class="h-8 w-8 rounded-full" src="https://randomuser.me/api/portraits/men/32.jpg" alt="">
                        </button>
                    </div>
                </div>
            </div>
            <div class="-mr-2 flex md:hidden">
                <!-- Mobile menu button -->
                <button type="button" class="inline-flex items-center justify-center p-2 rounded-md text-gray-400 hover:text-white hover:bg-gray-700 focus:outline-none focus:ring-2 focus:ring-inset focus:ring-white" aria-controls="mobile-menu" aria-expanded="false">
                    <span class="sr-only">Open main menu</span>
                    <!--
                        Icon when menu is closed.

                        Heroicon name: outline/menu

                        Menu open: "hidden", Menu closed: "block"
                    -->
                    <svg class="block h-6 w-6" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" aria-hidden="true">
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M4 6h16M4 12h16M4 18h16" />
                    </svg>
                    <!--
                        Icon when menu is open.

                        Heroicon name: outline/x

                        Menu open: "block", Menu closed: "hidden"
                    -->
                    <svg class="hidden h-6 w-6" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" aria-hidden="true">
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M6 18L18 6M6 6l12 12" />
                    </svg>
                </button>
            </div>
        </div>
    </div>

    <!-- Mobile menu, show/hide based on menu state. -->
    <div class="md:hidden" id="mobile-menu">
        <div class="px-2 pt-2 pb-3 space-y-1 sm:px-3">
            <a href="#" class="bg-gray-900 text-white block px-3 py-2 rounded-md text-base font-medium" aria-current="page">Home</a>
            <a href="#" class="text-gray-300 hover:bg-gray-700 hover:text-white block px-3 py-2 rounded-md text-base font-medium">Analytics</a>
            <a href="#" class="text-gray-300 hover:bg-gray-700 hover:text-white block px-3 py-2 rounded-md text-base font-medium">Reports</a>
            <a href="#" class="text-gray-300 hover:bg-gray-700 hover:text-white block px-3 py-2 rounded-md text-base font-medium">Products</a>
        </div>
        <div class="pt-4 pb-3 border-t border-gray-700">
            <div class="flex items-center px-5">
                <div class="flex-shrink-0">
                    <img class="h-10 w-10 rounded-full" src="https://randomuser.me/api/portraits/men/32.jpg" alt="">
                </div>
                <div class="ml-3">
                    <div class="text-base font-medium text-white">John Doe</div>
                    <div class="text-sm font-medium text-gray-400">[email protected]</div>
                </div>
                <button type="button" class="ml-auto bg-gray-800 flex-shrink-0 p-1 rounded-full text-gray-400 hover:text-white focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-gray-800 focus:ring-white">
                    <span class="sr-only">View notifications</span>
                    <!-- Heroicon name: bell -->
                    <svg class="h-6 w-6" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" aria-hidden="true">
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M15 17h5l-1.405-1.405A2.032 2.032 0 0118 14.158V11a6.002 6.002 0 00-4-5.659V5a2 2 0 10-4 0v.341C7.67 6.165 6 8.388 6 11v3.159c0 .538-.214 1.055-.595 1.436L4 17h5m6 0v1a3 3 0 11-6 0v-1m6 0H9" />
                    </svg>
                </button>
            </div>
            <div class="mt-3 px-2 space-y-1">
                <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-400 hover:text-white hover:bg-gray-700">Your Profile</a>
                <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-400 hover:text-white hover:bg-gray-700">Settings</a>
                <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-400 hover:text-white hover:bg-gray-700">Sign out</a>
            </div>
        </div>
    </div>
</nav>