body {
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: var(--bg-gradient);
            color: var(--text-color);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
        }
        
        body::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('./../tupian/background.jpg') no-repeat center center;
            background-size: cover;
            opacity: 10%;
            z-index: -1;
        }
        
        /* 紊顔���桁�紜�綣� */
        .header-section {
            text-align: center;
            margin: 5rem 0 4rem;
            padding: 0 15px;
            position: relative;
            z-index: 1;
        }
        
        .logo-container {
            display: inline-block;
            position: relative;
            padding: 1.5rem 2.5rem;
            border-radius: 20px;
            box-shadow: var(--shadow);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.3);
        }
        
        .logo {
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-size: 3rem;
            font-weight: 700;
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            letter-spacing: 1px;
            display: inline-block;
            position: relative;
            margin-bottom: 0.8rem;
            text-shadow: 0 2px 15px rgba(59, 130, 246, 0.3);
        }
        
        .logo::before {
            content: '';
            position: absolute;
            bottom: -12px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 5px;
            background: var(--gradient);
            border-radius: 5px;
            box-shadow: 0 2px 15px rgba(59, 130, 246, 0.4);
        }
        
        .logo::after {
            content: 'AI';
            position: absolute;
            top: -15px;
            right: -35px;
            font-size: 1rem;
            background: #10B981;
            color: white;
            padding: 3px 8px;
            border-radius: 20px;
            transform: rotate(15deg);
            box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
        }
        
        .slogan {
            color: var(--text-light);
            font-size: 1.2rem;
            margin-top: 1.8rem;
            font-weight: 400;
            letter-spacing: 1px;
        }
        
        /* ��膣∽��阪��臂��� */
        .search-container {
            max-width: 1200px;
            margin: 3rem auto;
            padding: 0 15px;
            position: relative;
            z-index: 1;
        }
        
        .search-box {
            position: relative;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border-radius: 50px;
            overflow: hidden;
            background: white;
            border: 1px solid rgba(59, 130, 246, 0.2);
        }
        
        .search-box:hover {
            transform: translateY(-3px);
            box-shadow: 0 20px 25px -5px rgba(59, 130, 246, 0.25);
        }
        
        .search-input {
            height: 72px;
            border-radius: 50px;
            padding: 0 35px;
            border: none;
            font-size: 1.1rem;
            background-color: transparent;
            transition: var(--transition);
            font-weight: 400;
            color: var(--text-color);
        }
        
        .search-input::placeholder {
            color: #9CA3AF;
            font-weight: 300;
        }
        
        .search-input:focus {
            box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
            outline: none;
            background-color: rgba(249, 250, 251, 0.8);
        }
        
        .search-btn {
            position: absolute;
            right: 12px;
            top: 12px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--gradient);
            color: white;
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }
        
        .search-btn:hover {
            background: var(--gradient-hover);
            transform: scale(1.05) rotate(5deg);
            box-shadow: 0 6px 18px rgba(59, 130, 246, 0.4);
        }
        
        .search-btn i {
            font-size: 1.3rem;
        }
        
        /* �㊨����膣∽��膈� */
        .popular-searches {
            margin-top: 3.5rem;
            text-align: center;
            padding: 0 15px;
        }
        
        .popular-searches h6 {
            color: var(--text-light);
            font-weight: 500;
            margin-bottom: 1.8rem;
            font-size: 1.1rem;
            letter-spacing: 1px;
            position: relative;
            display: inline-block;
        }
        
        .popular-searches h6::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 50%;
            height: 3px;
            background: var(--gradient);
            border-radius: 3px;
            opacity: 0.5;
        }
        
        .popular-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        
        .popular-tag {
            display: inline-block;
            background: white;
            color: var(--primary-color);
            border: 1px solid var(--border-color);
            padding: 12px 24px;
            border-radius: 25px;
            cursor: pointer;
            font-size: 0.95rem;
            transition: var(--transition);
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
            font-weight: 500;
            position: relative;
            overflow: hidden;
        }
        
        .popular-tag::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--gradient);
            opacity: 0;
            transition: var(--transition);
            z-index: 0;
        }
        
        .popular-tag span {
            position: relative;
            z-index: 1;
        }
        
        .popular-tag:hover {
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
            border-color: transparent;
        }
        
        .popular-tag:hover::before {
            opacity: 1;
        }
        
        /* 膸����∞���桁� */
        .results-container {
            max-width: 1200px;
            margin: 4rem auto;
            padding: 0 15px;
            display: none;
        }
        
        .result-card {
            background-color: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(10px);
            border-radius: 16px;
            padding: 2.5rem;
            margin-bottom: 2.5rem;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(229, 231, 235, 0.5);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        
        .result-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 6px;
            height: 100%;
            background: var(--gradient);
        }
        
        .result-card:hover {
            box-shadow: var(--card-hover-shadow);
            transform: translateY(-5px);
            background-color: white;
        }
        
        .result-card h4 {
            color: var(--primary-color);
            font-weight: 600;
            margin-bottom: 1.8rem;
            font-size: 1.5rem;
            letter-spacing: 0.5px;
            position: relative;
            display: inline-block;
        }
        
        .result-card h4::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--gradient);
            border-radius: 4px;
            opacity: 0.3;
        }
        
        /* 膸�����絎号�桁� */
        .result-content {
            color: var(--text-color);
            line-height: 1.8;
            font-size: 1.05rem;
        }
        
        .result-content p {
            margin-bottom: 1.5rem;
        }
        
        .result-content h2, 
        .result-content h3, 
        .result-content h4 {
            color: var(--text-color);
            margin: 2rem 0 1.2rem;
            font-weight: 600;
        }
        
        .result-content h2 {
            font-size: 1.6rem;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 1rem;
            position: relative;
        }
        
        .result-content h2::before {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 80px;
            height: 2px;
            background: var(--gradient);
        }
        
        .result-content h3 {
            font-size: 1.4rem;
            color: var(--primary-color);
        }
        
        .result-content h4 {
            font-size: 1.2rem;
            color: var(--primary-color);
        }
        
        .result-content ul, 
        .result-content ol {
            padding-left: 2rem;
            margin-bottom: 1.5rem;
        }
        
        .result-content li {
            margin-bottom: 0.8rem;
            position: relative;
            padding-left: 0.5rem;
        }
        
        .result-content li::marker {
            color: var(--primary-color);
            font-weight: bold;
        }
        
        .result-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        
        .result-content th, 
        .result-content td {
            padding: 14px 18px;
            border: 1px solid var(--border-color);
        }
        
        .result-content th {
            background: var(--gradient);
            color: white;
            font-weight: 500;
            text-align: left;
        }
        
        .result-content tr:nth-child(even) {
            background-color: rgba(59, 130, 246, 0.03);
        }
        
        .result-content tr:hover {
            background-color: rgba(59, 130, 246, 0.08);
        }
        
        .result-content blockquote {
            border-left: 4px solid var(--primary-color);
            padding: 1.8rem 2.2rem;
            margin: 2rem 0;
            background-color: rgba(59, 130, 246, 0.05);
            border-radius: 0 8px 8px 0;
            color: #4B5563;
            font-style: italic;
            position: relative;
            overflow: hidden;
        }
        
        .result-content blockquote::before {
            content: '"';
            position: absolute;
            top: 15px;
            left: 15px;
            font-size: 3.5rem;
            color: rgba(59, 130, 246, 0.2);
            line-height: 1;
        }
        
        .result-content img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 2rem 0;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
            border: 1px solid var(--border-color);
        }
        
        .result-content a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            border-bottom: 1px dashed var(--primary-color);
            transition: var(--transition);
            position: relative;
        }
        
        .result-content a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 1px;
            background: var(--gradient);
            transition: var(--transition);
        }
        
        .result-content a:hover {
            color: var(--primary-hover);
            border-bottom-color: transparent;
        }
        
        .result-content a:hover::after {
            width: 100%;
        }
        
        /* ��莉順�倶�� */
        .loading {
            text-align: center;
            padding: 1.8rem;
            color: var(--primary-color);
            font-weight: 500;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .spinner {
            display: inline-block;
            width: 28px;
            height: 28px;
            border: 3px solid rgba(0,0,0,.1);
            border-radius: 50%;
            border-top-color: var(--primary-color);
            animation: spin 1s ease-in-out infinite;
            margin-right: 15px;
            vertical-align: middle;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        /* 蕁笈���桁� */
        footer {
            text-align: center;
            padding: 4rem 15px 2rem;
            color: var(--text-light);
            font-size: 0.95rem;
            background-color: rgba(255, 255, 255, 0.9);
            border-top: 1px solid rgba(229, 231, 235, 0.5);
            margin-top: 5rem;
            position: relative;
            z-index: 1;
            backdrop-filter: blur(5px);
        }
        
        .footer-content {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .model-info {
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(229, 231, 235, 0.7);
            font-size: 0.85rem;
            color: #9CA3AF;
            line-height: 1.6;
        }
        
        /* 茖�薀医��膣� */
        .decor-shape {
            position: fixed;
            z-index: -1;
            pointer-events: none;
        }
        
        .decor-circle {
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.05) 0%, rgba(255,255,255,0) 70%);
            animation: float 20s infinite alternate;
        }
        
        .decor-square {
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(16, 185, 129, 0.03) 0%, rgba(255,255,255,0) 70%);
            transform: rotate(45deg);
            animation: float 18s infinite alternate-reverse;
        }
        
        .decor-1 {
            top: 10%;
            left: -150px;
        }
        
        .decor-2 {
            bottom: 15%;
            right: -120px;
            animation-delay: 3s;
        }
        
        @keyframes float {
            0% { transform: translateY(0px) translateX(0px) rotate(0deg); }
            50% { transform: translateY(-30px) translateX(30px) rotate(5deg); }
            100% { transform: translateY(30px) translateX(-30px) rotate(-5deg); }
        }
        
        /* ��綺�綣顒乗� */
        @media (max-width: 992px) {
            .decor-shape {
                display: none;
            }
        }
        
        @media (max-width: 768px) {
            .header-section {
                margin: 3.5rem 0 2.5rem;
            }
            
            .logo {
                font-size: 2.4rem;
            }
            
            .logo::after {
                right: -30px;
                font-size: 0.9rem;
            }
            
            .slogan {
                font-size: 1.1rem;
                margin-top: 1.5rem;
            }
            
            .search-input {
                height: 64px;
                font-size: 1rem;
                padding: 0 25px;
            }
            
            .search-btn {
                width: 44px;
                height: 44px;
                right: 10px;
                top: 10px;
            }
            
            .result-card {
                padding: 2rem 1.5rem;
                margin-bottom: 2rem;
            }
            
            .result-card h4 {
                font-size: 1.4rem;
                margin-bottom: 1.5rem;
            }
            
            .result-content {
                font-size: 1rem;
            }
            
            .popular-tag {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
        }
        
        @media (max-width: 576px) {
            .header-section {
                margin: 2.5rem 0 1.8rem;
            }
            
            .logo-container {
                padding: 1.2rem 2rem;
            }
            
            .logo {
                font-size: 2.2rem;
            }
            
            .logo::after {
                right: -25px;
                font-size: 0.8rem;
            }
            
            .popular-searches h6 {
                font-size: 1rem;
            }
            
            .popular-tag {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            
            footer {
                padding: 3rem 15px 1.5rem;
                margin-top: 3rem;
            }
        }