        .description {
            color: #7f8c8d;
            max-width: 800px;
            margin: 0 auto 15px;
            padding: 0 20px;
            font-size: 0.95rem;
        }
        .search-container {
            margin: 25px auto;
            max-width: 600px;
            position: relative;
            width: 90%;
        }
        .search-box {
            width: 100%;
            padding: 12px 20px;
            font-size: 16px;
            border: 2px solid #3498db;
            border-radius: 50px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.08);
            transition: border-color 0.3s;
        }
        .search-box:focus {
            border-color: #2980b9;
            outline: none;
        }
        .search-box::placeholder {
            color: #95a5a6;
        }
        .symbols-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
            gap: 15px;
            margin-top: 15px;
        }
        .category-section {
            margin-bottom: 30px;
            border-radius: 8px;
            background-color: white;
            padding: 20px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.08);
            scroll-margin-top: 70px;
        }
        .category-header {
            font-size: 2.0rem;
            color: #2980b9;
            padding-bottom: 12px;
            margin-bottom: 15px;
            border-bottom: 2px solid #3498db;
            position: relative;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .symbol-card {
            background-color: white;
            border-radius: 8px;
            padding: 15px 10px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 1px solid #eaeaea;
            position: relative;
            overflow: hidden;
        }
        .symbol-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(to right, #3498db, #2980b9);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }
        .symbol-card:hover::before {
            transform: scaleX(1);
        }
        .symbol-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 15px rgba(0,0,0,0.1);
            border-color: #3498db;
        }
        .symbol {
            font-size: 3rem;
            margin-bottom: 10px;
            transition: transform 0.3s ease;
        }
        .symbol-card:hover .symbol {
            transform: scale(1.1);
        }
        .symbol-name {
            font-size: 1.5rem;
            color: #7f8c8d;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .copied-alert {
            position: fixed;
            top: 20%;
            left: 50%;
            transform: translate(-50%, -50%) scale(0);
            padding: 18px 35px;
            background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);
            color: white;
            border-radius: 10px;
            box-shadow: 0 15px 30px rgba(46, 204, 113, 0.4);
            z-index: 1000;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.2rem;
            transition: transform 0.4s cubic-bezier(.17,.67,.41,1.44), opacity 0.3s;
            opacity: 0;
            pointer-events: none;
        }
        .copied-alert.show {
            transform: translate(-50%, -50%) scale(1);
            opacity: 1;
        }
        .copied-alert::before {
            content: '✓';
            font-size: 1.8rem;
            font-weight: bold;
            margin-right: 10px;
        }

        /* 分类导航样式 */
        .category-nav {
            position: sticky;
            top: 0px;
            background-color: rgba(255, 255, 255, 0.95);
            padding: 12px 0;
            z-index: 100;
            box-shadow: 0 3px 10px rgba(0,0,0,0.1);
            margin-bottom: 20px;
            backdrop-filter: blur(10px);
        }
        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
        }
        .category-link {
            padding: 8px 15px;
            background: linear-gradient(to right, #f8f9fa, #ecf4fe);
            border-radius: 30px;
            cursor: pointer;
            transition: all 0.3s ease;
            color: #2980b9;
            font-weight: 600;
            box-shadow: 0 3px 6px rgba(0,0,0,0.05);
            border: 1px solid #e0eefd;
            font-size: 1.5rem;
            white-space: nowrap;
        }
        .category-link:hover, .category-link.active {
            background: linear-gradient(to right, #e3f0ff, #d1e6ff);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(52, 152, 219, 0.15);
            color: #1c6ea4;
        }
        .disclaimer {
            max-width: 800px;
            margin: 12px auto 0;
            font-size: 0.8rem;
            line-height: 1.5;
            color: #ced4da;
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* 小屏设备优化 */
        @media (max-width: 768px) {

            .description {
                font-size: 0.9rem;
                padding: 0 15px;
            }

            .search-container {
                margin: 20px auto;
            }

            .symbols-grid {
                grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
                gap: 12px;
            }

            .symbol {
                font-size: 3rem;
            }

            .symbol-name {
                font-size: 1.2rem;
            }

            .category-nav {
                padding: 10px 0;
            }

            .category-link {
                padding: 7px 12px;
                font-size: 0.85rem;
            }

            .category-section {
                padding: 15px;
                margin-bottom: 25px;
            }

            .category-header {
                font-size: 1.2rem;
                padding-bottom: 10px;
                margin-bottom: 12px;
            }


            .copied-alert {
                padding: 15px 25px; 
                font-size: 1.1rem;
                min-width: 250px;
            }
        }

        @media (max-width: 480px) {
            body {
                padding: 10px;
            }

            .symbols-grid {
                grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
                gap: 10px;
            }

            .symbol {
                font-size: 3rem;
            }

            .symbol-name {
                font-size: 1.2rem;
            }

            .category-link {
                padding: 6px 10px;
                font-size: 1.2rem;
            }


            .category-header {
                font-size: 1.1rem;
            }

        }