/* ========== 基础重置与兼容性 ========== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-tap-highlight-color: transparent;
            -webkit-touch-callout: none;
        }

        html {
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
            -ms-text-size-adjust: 100%;
        }

        body {
            font-family: 
                -apple-system, 
                BlinkMacSystemFont, 
                "Segoe UI", 
                "PingFang SC", 
                "Hiragino Sans GB", 
                "Microsoft YaHei", 
                "Helvetica Neue", 
                Helvetica, 
                Arial, 
                sans-serif,
                "Apple Color Emoji",
                "Segoe UI Emoji";
            
            background: linear-gradient(135deg, #efc3de 0%, #c6eef3 100%);
            background-attachment: fixed; /* iOS Safari 兼容 */
            min-height: 100vh;
            color: #333;
            overflow-x: hidden;
            padding-bottom: 40px;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        .image-option img{
            width: 100%;
        }

        /* 触摸设备优化 */
        @media (hover: none) and (pointer: coarse) {
            button, .option-btn, .image-option, .confirm-btn, .cta-button {
                cursor: pointer;
                -webkit-tap-highlight-color: rgba(255,107,157,0.2);
            }
        }

        .container {
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
            width: 100%;
        }

        /* ========== 顶部标题 - 全新设计 ========== */
        .header {
            text-align: center;
            padding: 50px 20px 60px;
            animation: fadeInDown 0.8s ease-out;
            -webkit-animation: fadeInDown 0.8s ease-out;
        }

        @keyframes fadeInDown {
            from { opacity: 0; transform: translateY(-30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        @-webkit-keyframes fadeInDown {
            from { opacity: 0; transform: translateY(-30px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .logo-container {
            display: -webkit-box;
            display: -webkit-flex;
            display: flex;
            -webkit-box-align: center;
            align-items: center;
            -webkit-box-pack: center;
            justify-content: center;
            gap: 15px;
            background: rgba(255,255,255,0.75);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px); /* Safari/iOS 支持 */
            border-radius: 25px;
            padding: 30px 50px;
            box-shadow: 
                0 10px 45px rgba(239,107,157,0.35),
                0 2px 15px rgba(198,238,243,0.3),
                inset 0 1px 0 rgba(255,255,255,0.8);
            border: 2px solid rgba(255,255,255,0.6);
            position: relative;
            overflow: hidden;
            max-width: 95vw; /* 防止溢出 */
        }

        .logo-container::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: -webkit-linear-gradient(
                left,
                transparent,
                rgba(255,255,255,0.4),
                transparent
            );
            background: linear-gradient(
                90deg,
                transparent,
                rgba(255,255,255,0.4),
                transparent
            );
            animation: shimmer 3s infinite;
            -webkit-animation: shimmer 3s infinite;
        }

        @keyframes shimmer {
            0% { left: -100%; }
            50% { left: 100%; }
            100% { left: 100%; }
        }
        
        @-webkit-keyframes shimmer {
            0% { left: -100%; }
            50% { left: 100%; }
            100% { left: 100%; }
        }

        /* 心电图 SVG - 跨平台兼容 */
        .heartbeat-svg {
            width: 90px;
            height: 55px;
            display: block;
            animation: heartbeat 1.5s ease-in-out infinite;
            -webkit-animation: heartbeat 1.5s ease-in-out infinite;
            flex-shrink: 0;
        }

        .heartbeat-path {
            fill: none;
            stroke: url(#heartGradient);
            stroke-width: 3;
            stroke-linecap: round;
            stroke-linejoin: round;
            filter: drop-shadow(0 2px 8px rgba(239,107,157,0.5));
            -webkit-filter: drop-shadow(0 2px 8px rgba(239,107,157,0.5));
        }

        @keyframes heartbeat {
            0%, 100% { transform: scale(1); opacity: 1; }
            10% { transform: scale(1.08); opacity: 1; }
            20% { transform: scale(1); opacity: 1; }
            30% { transform: scale(1.05); opacity: 1; }
            40% { transform: scale(1); opacity: 1; }
        }
        
        @-webkit-keyframes heartbeat {
            0%, 100% { transform: scale(1); opacity: 1; }
            10% { transform: scale(1.08); opacity: 1; }
            20% { transform: scale(1); opacity: 1; }
            30% { transform: scale(1.05); opacity: 1; }
            40% { transform: scale(1); opacity: 1; }
        }

        /* 标题文字 */
        .logo-text {
            font-size: 48px;
            font-weight: bold;
            background: -webkit-linear-gradient(left, #ff6b9d 0%, #c44569 30%, #ff6b9d 70%, #c44569 100%);
            background: linear-gradient(135deg, #ff6b9d 0%, #c44569 30%, #ff6b9d 70%, #c44569 100%);
            background-size: 200% auto;
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 8px;
            white-space: nowrap;
            filter: drop-shadow(0 3px 8px rgba(196,69,105,0.3));
            -webkit-filter: drop-shadow(0 3px 8px rgba(196,69,105,0.3));
            animation: textShine 3s linear infinite;
            -webkit-animation: textShine 3s linear infinite;
        }

        @keyframes textShine {
            to { background-position: 200% center; }
        }
        
        @-webkit-keyframes textShine {
            to { background-position: 200% center; }
        }

        /* 右侧心电图 */
        .heartbeat-svg-right {
            width: 90px;
            height: 55px;
            display: block;
            animation: heartbeat 1.5s ease-in-out infinite;
            -webkit-animation: heartbeat 1.5s ease-in-out infinite;
            animation-delay: 0.2s;
            -webkit-animation-delay: 0.2s;
            flex-shrink: 0;
        }

        /* 装饰性波纹 */
        .ripple-container {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            -webkit-transform: translate(-50%, -50%);
            pointer-events: none;
            z-index: 0;
        }

        .ripple {
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255,107,157,0.15) 0%, transparent 70%);
            background: -webkit-radial-gradient(circle, rgba(255,107,157,0.15) 0%, transparent 70%);
            animation: rippleEffect 3s ease-out infinite;
            -webkit-animation: rippleEffect 3s ease-out infinite;
        }

        .ripple:nth-child(2) {
            animation-delay: 1s;
            -webkit-animation-delay: 1s;
        }

        .ripple:nth-child(3) {
            animation-delay: 2s;
            -webkit-animation-delay: 2s;
        }

        @keyframes rippleEffect {
            0% { transform: scale(0.5); opacity: 1; }
            100% { transform: scale(2); opacity: 0; }
        }
        
        @-webkit-keyframes rippleEffect {
            0% { transform: scale(0.5); opacity: 1; }
            100% { transform: scale(2); opacity: 0; }
        }

        /* ========== 响应式断点 - 标题区域 ========== */
        @media (max-width: 768px) {
            .header {
                padding: 35px 15px 50px;
            }
            
            .logo-container {
                padding: 25px 35px;
                gap: 12px;
            }

            .logo-text {
                font-size: 36px;
                letter-spacing: 5px;
            }

            .heartbeat-svg,
            .heartbeat-svg-right {
                width: 65px;
                height: 42px;
            }
        }

        @media (max-width: 480px) {
            .header {
                padding: 28px 12px 42px;
            }
            
            .logo-container {
                padding: 22px 26px;
                gap: 8px;
                border-radius: 20px;
            }

            .logo-text {
                font-size: 28px;
                letter-spacing: 3px;
            }

            .heartbeat-svg,
            .heartbeat-svg-right {
                width: 50px;
                height: 32px;
            }
        }

        /* 极小屏幕保护 */
        @media (max-width: 320px) {
            .logo-text {
                font-size: 24px;
                letter-spacing: 2px;
            }

            .heartbeat-svg,
            .heartbeat-svg-right {
                width: 40px;
                height: 26px;
            }
        }

        /* ========== 进度条 ========== */
        .progress-bar {
            width: 100%;
            height: 6px;
            background: rgba(255,255,255,0.4);
            border-radius: 3px;
            margin-bottom: 35px;
            overflow: hidden;
            box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
        }

        .progress-fill {
            height: 100%;
            background: -webkit-linear-gradient(left, #ff6b9d, #c44569);
            background: linear-gradient(90deg, #ff6b9d, #c44569);
            transition: width 0.5s ease;
            -webkit-transition: width 0.5s ease;
            border-radius: 3px;
            box-shadow: 0 2px 8px rgba(196,69,105,0.4);
        }

        /* ========== 问题卡片 ========== */
        .question-card {
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border-radius: 24px;
            padding: 42px 38px;
            margin-bottom: 28px;
            border: 2px solid rgba(255,255,255,0.6);
            box-shadow: 0 10px 40px rgba(239,195,222,0.35);
            animation: fadeInUp 0.6s ease-out;
            -webkit-animation: fadeInUp 0.6s ease-out;
        }

        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        @-webkit-keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .question-number {
            display: inline-block;
            background: -webkit-linear-gradient(top, #ff6b9d, #c44569);
            background: linear-gradient(135deg, #ff6b9d, #c44569);
            color: white;
            padding: 11px 22px;
            border-radius: 25px;
            font-size: 14px;
            font-weight: bold;
            margin-bottom: 24px;
            box-shadow: 0 4px 15px rgba(196,69,105,0.3);
        }

        .question-text {
            font-size: 21px;
            line-height: 1.7;
            margin-bottom: 34px;
            font-weight: 600;
            color: #444;
            word-wrap: break-word;
            word-break: break-word;
        }

        .options {
            display: -webkit-box;
            display: -webkit-flex;
            display: flex;
            gap: 18px;
            -webkit-box-pack: center;
            justify-content: center;
            -webkit-flex-wrap: wrap;
            flex-wrap: wrap;
        }

        .option-btn {
            padding: 17px 48px;
            font-size: 18px;
            border: 2px solid rgba(196,69,105,0.3);
            background: rgba(255,255,255,0.95);
            color: #c44569;
            border-radius: 14px;
            cursor: pointer;
            transition: all 0.3s ease;
            -webkit-transition: all 0.3s ease;
            min-width: 165px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(239,195,222,0.35);
            outline: none;
            -webkit-appearance: none;
            -moz-appearance: none;
            appearance: none;
        }

        .option-btn:hover,
        .option-btn:focus {
            background: -webkit-linear-gradient(top, #ff6b9d, #c44569);
            background: linear-gradient(135deg, #ff6b9d, #c44569);
            color: white;
            border-color: transparent;
            transform: translateY(-3px);
            -webkit-transform: translateY(-3px);
            box-shadow: 0 8px 26px rgba(196,69,105,0.45);
        }

        .option-btn.selected {
            background: -webkit-linear-gradient(top, #ff6b9d, #c44569);
            background: linear-gradient(135deg, #ff6b9d, #c44569);
            color: white;
            border-color: transparent;
            transform: scale(1.05);
            -webkit-transform: scale(1.05);
            box-shadow: 0 8px 30px rgba(196,69,105,0.55);
        }

        /* ========== 选择环节 ========== */
        .selection-card {
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border-radius: 24px;
            padding: 42px 38px;
            margin-bottom: 28px;
            border: 2px solid rgba(255,255,255,0.6);
            box-shadow: 0 10px 40px rgba(239,195,222,0.35);
            animation: fadeInUp 0.6s ease-out;
            -webkit-animation: fadeInUp 0.6s ease-out;
        }

        .selection-title {
            font-size: 23px;
            text-align: center;
            margin-bottom: 34px;
            font-weight: bold;
            color: #c44569;
            text-shadow: 0 2px 4px rgba(196,69,105,0.1);
            word-wrap: break-word;
        }

        .image-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 17px;
            margin-bottom: 30px;
        }

        /* IE/旧版Safari Grid降级 */
        @supports not (display: grid) {
            .image-grid {
                display: -webkit-box;
                display: -webkit-flex;
                display: flex;
                -webkit-flex-wrap: wrap;
                flex-wrap: wrap;
            }
            .image-option {
                width: calc(50% - 10px);
                margin-bottom: 14px;
            }
        }

        @media (max-width: 600px) {
            .image-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 13px;
            }
        }

        .image-option {
            position: relative;
            aspect-ratio: 1 / 1;
            -webkit-aspect-ratio: 1 / 1;
            border-radius: 18px;
            overflow: hidden;
            cursor: pointer;
            border: 3px solid transparent;
            transition: all 0.3s ease;
            -webkit-transition: all 0.3s ease;
            background: -webkit-linear-gradient(135deg, #f8a5c2 0%, #a8edea 100%);
            background: linear-gradient(135deg, #f8a5c2 0%, #a8edea 100%);
            display: -webkit-box;
            display: -webkit-flex;
            display: flex;
            -webkit-box-align: center;
            align-items: center;
            -webkit-box-pack: center;
            justify-content: center;
            font-size: 54px;
            box-shadow: 0 6px 22px rgba(239,195,222,0.4);
            outline: none;
            -webkit-tap-highlight-color: rgba(196,69,105,0.2);
        }

        /* aspect-ratio 降级方案 */
        @supports not (aspect-ratio: 1 / 1) {
            .image-option {
                height: 0;
                padding-bottom: 100%;
            }
            .image-option > * {
                position: absolute;
                top: 50%;
                left: 50%;
                transform: translate(-50%, -50%);
                -webkit-transform: translate(-50%, -50%);
            }
        }

        .image-option:hover,
        .image-option:focus {
            transform: scale(1.04) translateY(-4px);
            -webkit-transform: scale(1.04) translateY(-4px);
            box-shadow: 0 13px 35px rgba(196,69,105,0.38);
        }

        .image-option.selected {
            border-color: #c44569;
            box-shadow: 0 0 0 3px rgba(196,69,105,0.2), 0 13px 38px rgba(196,69,105,0.44);
            transform: scale(1.03);
            -webkit-transform: scale(1.03);
        }

        .image-option.selected::after {
            content: '✓';
            position: absolute;
            top: 12px;
            right: 12px;
            background: -webkit-linear-gradient(top, #ff6b9d, #c44569);
            background: linear-gradient(135deg, #ff6b9d, #c44569);
            color: white;
            width: 33px;
            height: 33px;
            border-radius: 50%;
            display: -webkit-box;
            display: -webkit-flex;
            display: flex;
            -webkit-box-align: center;
            align-items: center;
            -webkit-box-pack: center;
            justify-content: center;
            font-size: 19px;
            font-weight: bold;
            box-shadow: 0 3px 11px rgba(196,69,105,0.45);
            animation: popIn 0.3s ease-out;
            -webkit-animation: popIn 0.3s ease-out;
            z-index: 10;
        }

        @keyframes popIn {
            0% { transform: scale(0); }
            70% { transform: scale(1.2); }
            100% { transform: scale(1); }
        }
        
        @-webkit-keyframes popIn {
            0% { transform: scale(0); }
            70% { transform: scale(1.2); }
            100% { transform(1); }
        }

        .image-label {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            text-align: center;
            background: -webkit-linear-gradient(top, rgba(196,69,105,0.92), rgba(196,69,105,0.72));
            background: linear-gradient(to top, rgba(196,69,105,0.92), rgba(196,69,105,0.72));
            padding: 11px 8px;
            font-size: 14px;
            color: white;
            font-weight: 500;
            backdrop-filter: blur(5px);
            -webkit-backdrop-filter: blur(5px);
            z-index: 5;
        }

        .confirm-btn {
            width: 100%;
            padding: 20px;
            font-size: 19px;
            background: -webkit-linear-gradient(top, #ff6b9d, #c44569);
            background: linear-gradient(135deg, #ff6b9d, #c44569);
            color: white;
            border: none;
            border-radius: 16px;
            cursor: pointer;
            font-weight: bold;
            transition: all 0.3s ease;
            -webkit-transition: all 0.3s ease;
            box-shadow: 0 6px 26px rgba(196,69,105,0.47);
            letter-spacing: 1px;
            outline: none;
            -webkit-appearance: none;
            -moz-appearance: none;
            appearance: none;
        }

        .confirm-btn:hover,
        .confirm-btn:focus {
            transform: translateY(-3px);
            -webkit-transform: translateY(-3px);
            box-shadow: 0 10px 37px rgba(196,69,105,0.58);
        }

        .confirm-btn:active {
            transform: translateY(-1px);
            -webkit-transform: translateY(-1px);
        }

        /* ========== 加载动画 ========== */
        .loading-container {
            text-align: center;
            padding: 85px 20px;
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border-radius: 24px;
            box-shadow: 0 10px 40px rgba(239,195,222,0.35);
            animation: fadeInUp 0.6s ease-out;
            -webkit-animation: fadeInUp 0.6s ease-out;
            margin-top: 20px;
        }

        .spinner {
            width: 72px;
            height: 72px;
            border: 5px solid rgba(196,69,105,0.16);
            border-top-color: #c44569;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            -webkit-animation: spin 1s linear infinite;
            margin: 0 auto 27px;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        @-webkit-keyframes spin {
            to { -webkit-transform: rotate(360deg); }
        }

        .loading-text {
            font-size: 19px;
            color: #c44569;
            font-weight: 500;
        }

        /* ========== 成功页面 ========== */
        .success-card {
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border-radius: 24px;
            padding: 48px 38px;
            border: 2px solid rgba(255,255,255,0.6);
            box-shadow: 0 10px 52px rgba(239,195,222,0.42);
            animation: fadeInUp 0.6s ease-out;
            -webkit-animation: fadeInUp 0.6s ease-out;
            margin-top: 20px;
        }

        .success-icon {
            font-size: 88px;
            text-align: center;
            margin-bottom: 24px;
            animation: bounce 2s infinite;
            -webkit-animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.16); }
        }
        
        @-webkit-keyframes bounce {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.16); }
        }

        .success-title {
            font-size: 29px;
            text-align: center;
            margin-bottom: 10px;
            background: -webkit-linear-gradient(top, #ff6b9d, #c44569, #ffd700);
            background: linear-gradient(135deg, #ff6b9d, #c44569, #ffd700);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: bold;
            letter-spacing: 1px;
            word-wrap: break-word;
        }

        .success-subtitle {
            font-size: 13px;
            text-align: center;
            margin-bottom: 10px;
            color: #c44569;
            font-weight: 600;
            line-height: 1.5;
        }

        .success-subtitle strong {
            font-size: 20px;
            color: #ff6b9d;
            text-shadow: 0 2px 9px rgba(255,107,157,0.32);
        }

        .warning-box {
            background: -webkit-linear-gradient(135deg, rgba(255,215,0,0.16), rgba(255,165,0,0.16));
            background: linear-gradient(135deg, rgba(255,215,0,0.16), rgba(255,165,0,0.16));
            border-left: 5px solid #ffa500;
            padding: 19px 24px;
            margin-bottom: 10px;
            border-radius: 13px;
            font-size: 15px;
            line-height: 1.75;
            color: #cc7000;
            font-weight: 500;
            box-shadow: 0 4px 16px rgba(255,165,0,0.22);
        }

        .cta-hint {
            text-align: center;
            margin-bottom: 10px;
            font-size: 17px;
            color: #666;
            font-weight: 500;
        }

        .rules-list {
            list-style: none;
            margin-top: 22px;
        }

        .rules-list li {
            padding: 4px 8px;
            margin-bottom: 6px;
            background: -webkit-linear-gradient(135deg, rgba(255,240,245,0.92), rgba(240,248,255,0.92));
            background: linear-gradient(135deg, rgba(255,240,245,0.92), rgba(240,248,255,0.92));
            border-radius: 14px;
            font-size: 14px;
            line-height: 1.73;
            border-left: 4px solid #ff6b9d;
            color: #444;
            box-shadow: 0 3px 13px rgba(239,195,222,0.27);
            word-wrap: break-word;
        }

        .rules-list li strong {
            color: #c44569;
            font-size: 15px;
        }

        .cta-button {
            width: 100%;
            padding: 25px;
            font-size: 21px;
            background: -webkit-linear-gradient(top, #ff6b9d, #c44569, #ff6b9d);
            background: linear-gradient(135deg, #ff6b9d, #c44569, #ff6b9d);
            background-size: 200% 200%;
            color: white;
            border: none;
            border-radius: 18px;
            cursor: pointer;
            font-weight: bold;
            margin-top: 34px;
            transition: all 0.3s ease;
            -webkit-transition: all 0.3s ease;
            box-shadow: 0 8px 34px rgba(196,69,105,0.52);
            animation: gradientShift 3s ease infinite, glow 2s ease-in-out infinite;
            -webkit-animation: gradientShift 3s ease infinite, glow 2s ease-in-out infinite;
            letter-spacing: 2px;
            outline: none;
            -webkit-appearance: none;
            -moz-appearance: none;
            appearance: none;
        }

        @keyframes gradientShift {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }
        
        @-webkit-keyframes gradientShift {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        @keyframes glow {
            0%, 100% { box-shadow: 0 8px 34px rgba(196,69,105,0.52); }
            50% { box-shadow: 0 8px 50px rgba(196,69,105,0.78); }
        }
        
        @-webkit-keyframes glow {
            0%, 100% { box-shadow: 0 8px 34px rgba(196,69,105,0.52); }
            50% { box-shadow: 0 8px 50px rgba(196,69,105,0.78); }
        }

        .cta-button:hover,
        .cta-button:focus {
            transform: translateY(-4px) scale(1.02);
            -webkit-transform: translateY(-4px) scale(1.02);
            box-shadow: 0 13px 48px rgba(196,69,105,0.67);
        }

        .hidden {
            display: none !important;
        }

        /* ========== 响应式 - 移动端优化 ========== */
        @media (max-width: 600px) {
            .container {
                padding: 14px;
            }
            
            .question-card,
            .selection-card,
            .success-card,
            .loading-container {
                padding: 12px 12px;
                border-radius: 20px;
            }
            
            .question-text {
                font-size: 18px;
            }
            
            .option-btn {
                padding: 14px 34px;
                font-size: 16px;
                min-width: 134px;
            }
            
            .selection-title {
                font-size: 19px;
            }

            .success-title {
                font-size: 24px;
            }

            .success-subtitle {
                font-size: 13px;
            }

            .success-subtitle strong {
                font-size: 20px;
            }

            .cta-button {
                font-size: 18px;
                padding: 21px;
            }

            .progress-bar {
                margin-bottom: 28px;
            }

            .image-option {
                font-size: 46px;
            }
        }

        /* ========== 打印样式隐藏 ========== */
        @media print {
            body {
                background: white !important;
            }
            .hidden {
                display: none !important;
            }
        }

        /* ========== 高对比度模式支持 ========== */
        @media (prefers-contrast: high) {
            .option-btn,
            .confirm-btn,
            .cta-button {
                border: 2px solid currentColor;
            }
        }

        /* ========== 减少动画模式（无障碍） ========== */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }

        /* ========== 横屏模式提示（移动端） ========== */
        @media (max-width: 767px) and (orientation: landscape) {
            .container {
                padding: 10px;
                max-width: 100%;
            }
            
            .header {
                padding: 20px 15px 25px;
            }
            
            .logo-container {
                padding: 20px 30px;
            }
        }