* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Inter', -apple-system, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #f5f7ff 0%, #e8edff 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 30px 20px;
            color: #1a1d2b;
            line-height: 1.7;
        }
        
        .analysis-platform-container {
            width: 100%;
            max-width: 950px;
            margin: 0 auto;
        }
        
        .platform-header-area {
            text-align: center;
            margin-bottom: 50px;
            padding: 45px 35px;
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            border-radius: 28px;
            color: white;
            box-shadow: 0 20px 50px rgba(30, 60, 114, 0.25);
            position: relative;
            overflow: hidden;
        }
        
        .platform-header-area::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none" opacity="0.05"><path d="M0,0 L100,0 L100,100 Z" fill="white"/></svg>');
            pointer-events: none;
        }
        
        .main-platform-title {
            font-size: 42px;
            font-weight: 800;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
            position: relative;
            z-index: 1;
        }
        
        .platform-subtitle-description {
            font-size: 20px;
            opacity: 0.92;
            font-weight: 300;
            max-width: 750px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }
        
        .diagnostic-interface-card {
            background: white;
            border-radius: 28px;
            box-shadow: 0 18px 45px rgba(0, 0, 0, 0.1);
            padding: 55px 50px;
            margin-bottom: 50px;
            position: relative;
            overflow: hidden;
        }
        
        .diagnostic-interface-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 8px;
            background: linear-gradient(90deg, #6c8eff, #4a6fff);
        }
        
        .any-symbol-search-section {
            margin-bottom: 65px;
            text-align: center;
        }
        
        .search-section-headline {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 35px;
            color: #1e3c72;
            letter-spacing: -0.3px;
        }
        
        .search-input-area {
            display: flex;
            flex-direction: column;
            gap: 25px;
            max-width: 800px;
            margin: 0 auto 40px;
        }
        
        @media (min-width: 560px) {
            .search-input-area {
                flex-direction: row;
            }
        }
        
        .universal-symbol-input {
            flex: 1;
            padding: 22px 32px;
            border: 2px solid #d5deff;
            border-radius: 18px;
            font-size: 18px;
            transition: all 0.4s;
            background: #f8faff;
            color: #1a1d2b;
        }
        
        .universal-symbol-input:focus {
            outline: none;
            border-color: #6c8eff;
            box-shadow: 0 0 0 5px rgba(108, 142, 255, 0.18);
            background: white;
        }
        
        .initiate-diagnostic-button {
            background: linear-gradient(135deg, #6c8eff 0%, #4a6fff 100%);
            color: white;
            border: none;
            border-radius: 18px;
            padding: 22px 50px;
            font-size: 18px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.4s;
            white-space: nowrap;
            letter-spacing: 0.4px;
            position: relative;
            overflow: hidden;
        }
        
        .initiate-diagnostic-button::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transform: rotate(30deg);
            transition: transform 0.6s;
        }
        
        .initiate-diagnostic-button:hover {
            transform: translateY(-4px);
            box-shadow: 0 15px 35px rgba(108, 142, 255, 0.35);
        }
        
        .initiate-diagnostic-button:hover::after {
            transform: rotate(30deg) translateX(100%);
        }
        
        .input-hint-text {
            font-size: 15px;
            color: #6b7280;
            margin-top: 15px;
            font-style: italic;
        }
        
        .input-hint-text strong {
            color: #4a6fff;
            font-weight: 600;
        }
        
        .analytical-features-display {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 35px;
        }
        
        .feature-display-card {
            text-align: center;
            padding: 40px 25px;
            background: #f8faff;
            border-radius: 22px;
            transition: all 0.4s;
            border: 2px solid #e6ebff;
            position: relative;
            overflow: hidden;
        }
        
        .feature-display-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(108, 142, 255, 0.05), transparent);
            opacity: 0;
            transition: opacity 0.4s;
        }
        
        .feature-display-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
            border-color: #c5d2ff;
        }
        
        .feature-display-card:hover::before {
            opacity: 1;
        }
        
        .feature-icon-element {
            font-size: 48px;
            display: block;
            margin-bottom: 25px;
            filter: drop-shadow(0 6px 10px rgba(0,0,0,0.08));
        }
        
        .feature-title-text {
            font-weight: 800;
            margin-bottom: 15px;
            color: #1e3c72;
            font-size: 21px;
        }
        
        .feature-description-text {
            color: #4b5563;
            font-size: 16px;
            line-height: 1.6;
        }
        
        .platform-explanation-section {
            background: white;
            border-radius: 28px;
            box-shadow: 0 18px 45px rgba(0, 0, 0, 0.1);
            padding: 55px 50px;
            margin-bottom: 50px;
        }
        
        .platform-explanation-section h2 {
            color: #1e3c72;
            margin-bottom: 40px;
            font-size: 36px;
            text-align: center;
            font-weight: 800;
        }
        
        .explanation-content-area {
            font-size: 18px;
            color: #4b5563;
        }
        
        .explanation-content-area p {
            margin-bottom: 28px;
            line-height: 1.8;
        }
        
        .explanation-highlight {
            background: linear-gradient(120deg, rgba(108, 142, 255, 0.1) 0%, transparent 100%);
            padding: 25px 30px;
            border-radius: 18px;
            margin: 35px 0;
            border-left: 5px solid #6c8eff;
        }
        
        .analytical-process-modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.85);
            z-index: 9999;
            align-items: center;
            justify-content: center;
            padding: 30px;
            backdrop-filter: blur(10px);
        }
        
        .process-modal-content {
            background: white;
            border-radius: 28px;
            width: 100%;
            max-width: 750px;
            padding: 55px;
            position: relative;
            box-shadow: 0 40px 80px rgba(0, 0, 0, 0.4);
            animation: modalEntry 0.6s cubic-bezier(0.23, 1, 0.32, 1);
        }
        
        @keyframes modalEntry {
            from {
                opacity: 0;
                transform: translateY(-50px) scale(0.9);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }
        
        .modal-close-control {
            position: absolute;
            top: 30px;
            right: 30px;
            font-size: 40px;
            cursor: pointer;
            color: #9ca3af;
            transition: all 0.3s;
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: #f8faff;
            z-index: 10;
        }
        
        .modal-close-control:hover {
            color: #1a1d2b;
            background: #e6ebff;
            transform: rotate(90deg);
        }
        
        .process-modal-content h2 {
            text-align: center;
            margin-bottom: 50px;
            color: #1e3c72;
            font-size: 34px;
            font-weight: 800;
        }
        
        .analytical-step-progress-item {
            margin-bottom: 45px;
        }
        
        .step-label-display {
            display: flex;
            justify-content: space-between;
            margin-bottom: 18px;
            font-size: 18px;
            font-weight: 600;
        }
        
        .step-progress-visual-bar {
            height: 14px;
            background: #f1f5f9;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: inset 0 2px 6px rgba(0,0,0,0.05);
        }
        
        .step-progress-fill-animation {
            height: 100%;
            background: linear-gradient(90deg, #6c8eff, #4a6fff, #2a52ff);
            border-radius: 10px;
            width: 0%;
            transition: width 0.7s cubic-bezier(0.34, 1.56, 0.64, 1);
        }
        
        .results-presentation-container {
            text-align: center;
            display: none;
            animation: resultsAppear 0.8s ease;
        }
        
        @keyframes resultsAppear {
            0% {
                opacity: 0;
                transform: translateY(30px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .results-presentation-container h3 {
            margin-bottom: 35px;
            color: #1e3c72;
            font-size: 30px;
            font-weight: 800;
        }
        
        .report-detail-card {
            background: #f8faff;
            padding: 35px;
            border-radius: 22px;
            margin-bottom: 45px;
            font-size: 17px;
            color: #4b5563;
            border: 2px solid #e6ebff;
            text-align: left;
            position: relative;
        }
        
        .report-detail-card::before {
            content: '📄';
            position: absolute;
            top: -20px;
            left: 30px;
            font-size: 32px;
            background: white;
            padding: 8px;
            border-radius: 50%;
            border: 2px solid #e6ebff;
        }
        
        .whatsapp-report-delivery-button {
            background: linear-gradient(135deg, #25D366 0%, #1ebe5d 100%);
            color: white;
            border: none;
            border-radius: 18px;
            padding: 25px 55px;
            font-size: 19px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.4s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 18px;
            margin: 0 auto;
            letter-spacing: 0.4px;
            text-decoration: none;
            width: fit-content;
        }
        
        .whatsapp-report-delivery-button:hover {
            transform: translateY(-4px);
            box-shadow: 0 15px 35px rgba(37, 211, 102, 0.35);
        }
        
        .risk-notification-area {
            background: #fffaf0;
            border-radius: 22px;
            padding: 40px;
            margin-top: 55px;
            border: 2px solid #fed7aa;
        }
        
        .risk-notification-title {
            color: #ea580c;
            font-weight: 800;
            margin-bottom: 25px;
            font-size: 22px;
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .risk-notification-title::before {
            content: '⚠️';
            font-size: 28px;
        }
        
        .risk-notification-content {
            color: #9a3412;
            font-size: 16px;
            line-height: 1.9;
        }
        
        .platform-footer-navigation-area {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 35px;
            margin-top: 70px;
            padding-top: 45px;
            border-top: 2px solid #e6ebff;
            width: 100%;
            max-width: 950px;
        }
        
        .footer-navigation-item {
            color: #6c8eff;
            text-decoration: none;
            font-size: 17px;
            transition: all 0.3s;
            padding: 14px 28px;
            border-radius: 12px;
            font-weight: 600;
            position: relative;
            overflow: hidden;
        }
        
        .footer-navigation-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(108, 142, 255, 0.1), transparent);
            opacity: 0;
            transition: opacity 0.3s;
        }
        
        .footer-navigation-item:hover {
            color: #4a6fff;
            background: #f8faff;
            text-decoration: none;
        }
        
        .footer-navigation-item:hover::before {
            opacity: 1;
        }
        
        .legal-information-display {
            display: none;
            background: white;
            border-radius: 22px;
            padding: 45px;
            margin-top: 35px;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
            border: 2px solid #e6ebff;
        }
        
        .legal-information-display h3 {
            color: #1e3c72;
            margin-bottom: 30px;
            font-size: 28px;
            font-weight: 800;
        }
        
        .legal-information-display p {
            margin-bottom: 22px;
            color: #4b5563;
            line-height: 1.8;
        }
        
        .close-legal-button {
            background: #6c8eff;
            color: white;
            border: none;
            border-radius: 12px;
            padding: 16px 32px;
            cursor: pointer;
            margin-top: 35px;
            font-weight: 600;
            transition: background 0.3s;
            font-size: 16px;
        }
        
        .close-legal-button:hover {
            background: #4a6fff;
        }
        
        @media (max-width: 768px) {
            .main-platform-title {
                font-size: 34px;
            }
            
            .diagnostic-interface-card, .platform-explanation-section {
                padding: 35px 25px;
            }
            
            .analytical-features-display {
                grid-template-columns: 1fr;
            }
            
            .process-modal-content {
                padding: 35px;
            }
            
            .search-section-headline {
                font-size: 26px;
            }
            
            .platform-footer-navigation-area {
                gap: 20px;
            }
            
            .footer-navigation-item {
                padding: 12px 20px;
                font-size: 15px;
            }
        }
        
        @media (max-width: 480px) {
            .main-platform-title {
                font-size: 28px;
            }
            
            .platform-subtitle-description {
                font-size: 17px;
            }
            
            .initiate-diagnostic-button {
                padding: 20px 35px;
                font-size: 16px;
                width: 100%;
            }
            
            .universal-symbol-input {
                font-size: 16px;
                padding: 18px 25px;
            }
        }
        
        /* 成功动画 */
        .success-animation {
            display: inline-block;
            animation: successPulse 2s infinite;
        }
        
        @keyframes successPulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }