/* 顶部导航栏 - Pinterest风格 */
        .navbar {
            background-color: #ffffff;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            padding: 12px 20px;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            height: 60px;
            max-height: 60px;
        }

        .navbar-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin: 0 auto;
            height: 100%;
            width:100%;
        }

        /* Logo */
        .logo {
            font-size: 28px;
            font-weight: bold;
            color: #e60023;
            text-decoration: none;
            cursor: pointer;
            padding: 8px 12px;
            border-radius: 24px;
            transition: background-color 0.2s ease;
        }

        .logo:hover {
            background-color: #f0f0f0;
        }

        /* 导航按钮 */
        .nav-buttons {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .nav-btn {
            text-decoration: none;
            transition: background-color 0.2s ease;
        }

        .nav-btn.active {
            color: #fff;
        }

        .nav-btn:hover:not(.active) {
            color: #fff;
        }

        .nav-btn img {
            height: 34px;
        }

        /* 搜索栏 */
        .search-container {
            flex: 1;
            max-width: 800px;
            margin: 0 16px;
        }

        .search-bar {
            width: 100%;
            padding: 10px 16px;
            border: none;
            border-radius: 24px;
            font-size: 16px;
            background-color: #e9e9e9;
            transition: all 0.2s ease;
        }

        .search-bar:focus {
            outline: none;
            background-color: #fff;
            box-shadow: inset 0 0 0 2px #e60023;
        }

        /* 用户菜单 */
        .user-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .user-menu i {
            font-size: 20px;
            padding: 8px;
            color: #333;
            cursor: pointer;
            border-radius: 50%;
            transition: background-color 0.2s ease;
        }

        .user-menu i:hover {
            background-color: #f0f0f0;
        }

        /* 大透明按钮样式 */
        .large-transparent-btn {
            background-color: transparent;
            border: none;
            font-size: 18px;
            font-weight: 600;
            color: #333;
            cursor: pointer;
            padding: 8px 16px;
            border-radius: 24px;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .large-transparent-btn:hover {
            background-color: rgba(0, 0, 0, 0.05);
        }

        .user-avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            object-fit: cover;
            cursor: pointer;
            border: 1px solid #ddd;
        }

        /* 登录按钮样式 */
        .login-buttons {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .small-transparent-btn {
            padding: 6px 12px;
            font-size: 14px;
            font-weight: 600;
            color: #333;
            background: none;
            border: 1px solid #ddd;
            border-radius: 16px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .small-transparent-btn:hover {
            background-color: rgba(0, 0, 0, 0.05);
        }

        .small-transparent-btn i {
            font-size: 14px;
            padding:0;
            color: #333;
            cursor: pointer;
            border:none;
        }

        .small-filled-btn {
            padding: 6px 12px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background-color: #111;
            border: none;
            border-radius: 16px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .small-filled-btn:hover {
            background-color: #333;
        }

        /* 用户头像容器 */
        .user-avatar-container {
            position: relative;
            display: inline-block;
        }

        /* 用户下拉菜单 */
        .user-dropdown {
            position: absolute;
            top: 100%;
            right: 0;
            margin-top: 8px;
            width: 280px;
            background-color: #fff;
            border: 1px solid #eee;
            border-radius: 8px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
            z-index: 1000;
        }

        .dropdown-header {
            padding: 16px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .dropdown-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            object-fit: cover;
        }

        .dropdown-user-info {
            flex: 1;
        }

        .dropdown-username {
            font-size: 16px;
            font-weight: 600;
            color: #333;
            margin-bottom: 4px;
        }

        .dropdown-phone {
            font-size: 14px;
            color: #666;
        }

        .dropdown-divider {
            height: 1px;
            background-color: #eee;
        }

        .dropdown-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            font-size: 14px;
            color: #333;
            cursor: pointer;
            transition: background-color 0.2s ease;
        }

        .dropdown-item:hover {
            background-color: #f8f9fa;
        }

        .dropdown-item a {
            color: inherit;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-direction: row;
            flex-wrap: nowrap;
            align-content: center;
            justify-content: flex-start;
            width: 100%;
        }

        .dropdown-item i {
            width: 30px;
            text-align: center;
            color: #666;
        }

        .logout-item {
            color: #e63946 !important;
        }

        .logout-item i {
            color: #e63946 !important;
        }

        /* <768px 时，显示1列 */
        @media (max-width: 479px) {
            .navbar-container {
                flex-wrap: wrap;
            }

        }