:root {
            --bg: #f5f0eb;
            --card-bg: #ffffff;
            --primary: #3a2f28;
            --accent: #58BD38;
            --accent-hover: #b8933f;
            --text: #2c2416;
            --text-light: #6b5e4f;
            --border: #e0d5c7;
            --input-bg: #fafaf8;
            --shadow: 0 2px 16px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.10);
            --radius: 14px;
            --radius-sm: 8px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-serif: "微软雅黑", Arial, Helvetica, sans-serif;
            --font-sans: "微软雅黑", Arial, Helvetica, sans-serif;
            /* 立体按钮专用变量 */
            --btn-primary-top: #4a3e35;
            --btn-primary-bottom: #2b221c;
            --btn-accent-top: #d4b36a;
            --btn-accent-bottom: #a8873d;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background: var(--bg);
            font-family: var(--font-sans);
            color: var(--text);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: flex-start;
            padding: 20px;
            background-image:
                radial-gradient(ellipse at 20% 10%, rgba(200, 164, 92, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 90%, rgba(180, 150, 120, 0.05) 0%, transparent 60%),
                radial-gradient(ellipse at 50% 50%, rgba(0, 0, 0, 0.015) 0%, transparent 70%);
        }

        .container {
            width: 100%;
            max-width: 850px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 24px;
            padding: 10px 0 40px;
        }

        /* 头部 */
        .header {
            text-align: center;
            padding: 18px 0 8px;
        }
        .header .icon-wrap {
            display: inline-block;
            font-size: 48px;
            margin-bottom: 6px;
            animation: float 3s ease-in-out infinite;
        }
        @keyframes float {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
        }
        .header h1 {
            font-family: var(--font-serif);
            font-size: 2.3rem;
            font-weight: bold;
            color: #000000;
            letter-spacing: 0;
            margin: 0 0 10px 0;
        }
        .header .subtitle {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-top: 2px;
            letter-spacing: 0.03em;
        }

        /* 卡片 */
        .card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 38px 10% 80px 10%;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
        }
        .card-title {
            font-family: var(--font-serif);
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.03em;
        }
        .card-title .dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        /* 钢琴类型选择 */
        .type-selector {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .type-card {
            flex: 1;
            min-width: 140px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 18px 16px;
            cursor: pointer;
            text-align: center;
            transition: var(--transition);
            background: var(--input-bg);
            position: relative;
            user-select: none;
            -webkit-tap-highlight-color: transparent;
        }
        .type-card:hover {
            border-color: #58BD38;
            background: #fefdf9;
        }
        .type-card.active {
            border-color: var(--accent);
            background: #fefcf6;
            box-shadow: 0 0 0 4px rgba(200, 164, 92, 0.08);
        }
        .type-card .type-icon {
            font-size: 36px;
            display: block;
            margin-bottom: 6px;
        }
        .type-card .type-name {
            font-weight: 600;
            font-size: 1.0rem;
            color: var(--primary);
            letter-spacing: 0.03em;
        }
        .type-card .type-desc {
            font-size: 0.75rem;
            color: var(--text-light);
            margin-top: 2px;
        }
        .type-card .check-mark {
            display: none;
            position: absolute;
            top: 10px;
            right: 14px;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            line-height: 22px;
            text-align: center;
        }
        .type-card.active .check-mark {
            display: block;
        }

        /* 选择器通用 */
        .select-wrap {
            margin-top: 18px;
        }
        .select-wrap label {
            display: block;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            margin-bottom: 6px;
            letter-spacing: 0.03em;
        }
        .select-wrap select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-family: var(--font-sans);
            background: var(--input-bg);
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236b5e4f' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            padding-right: 44px;
        }
        .select-wrap select:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(200, 164, 92, 0.07);
        }

        .hint-text {
            font-size: 0.8rem;
            color: #8b7a5e;
            margin-top: 6px;
            display: flex;
            align-items: center;
            gap: 4px;
            letter-spacing: 0.02em;
        }

        /* 立体按钮样式 - 计算按钮 */
        .btn-calculate {
            display: block;
            width: 100%;
            margin-top: 50px;
            padding: 16px 24px;
            background-color: #332921;
            color: #fff;
            border: none;
            border-bottom: 3px solid #1a1410;
            border-radius: 10px;
            font-size: 1.3rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            cursor: pointer;
            transition: all 0.15s ease;
            font-family: var(--font-sans);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.08);
            position: relative;
            top: 0;
            text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
        }
        .btn-calculate:hover {
            background-color: linear-gradient(180deg, #5a4a3c 0%, #3d3026 50%, #33271e 100%);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.12);
            transform: translateY(-1px);
            border-bottom-width: 4px;
        }
        .btn-calculate:active {
            background-color: linear-gradient(180deg, #2b221c 0%, #3a2f28 50%, #4a3e35 100%);
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2), inset 0 2px 4px rgba(0, 0, 0, 0.3);
            transform: translateY(2px);
            border-bottom-width: 1px;
            transition: all 0.05s ease;
        }

        /* 结果区域 */
        .result-area {
            margin-top: 20px;
            display: none;
            animation: fadeSlideIn 0.4s ease-out;
        }
        @keyframes fadeSlideIn {
            from {
                opacity: 0;
                transform: translateY(-12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .result-area.show {
            display: block;
        }
        .result-box {
            background: #fdfcf7;
            border: 2px solid var(--accent);
            border-radius: var(--radius-sm);
            padding: 20px 22px;
        }
        .result-box .result-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 7px 0;
            font-size: 0.95rem;
            border-bottom: 1px dashed #e8dfcf;
        }
        .result-box .result-row:last-child {
            border-bottom: none;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--primary);
            padding-top: 10px;
        }
        .result-box .result-row .label {
            color: var(--text-light);
        }
        .result-box .result-row .value {
            font-weight: 600;
            color: var(--primary);
        }
        .result-box .result-total .value {
            color: #FF6600;
            font-size: 1.5rem;
        }
        .result-box .fee-note {
            font-size: 0.85rem;
            color: #9b8b7a;
            margin-top: 8px;
            padding-top: 8px;
            border-top: 1px dashed #e8dfcf;
            letter-spacing: 0.02em;
        }

        /* 提示 */
        .notice {
            margin-top: 14px;
            padding: 14px 18px;
            background: #fffdf7;
            border-left: 4px solid var(--accent);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .notice.show {
            display: block;
            animation: fadeSlideIn 0.5s ease-out;
        }
        .notice .icon-info {
            display: inline-block;
            margin-right: 4px;
        }

        /* 表单卡片 */
        .form-card .card-title {
            margin-bottom: 8px;
        }
        .form-card .form-subtitle {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .form-group {
            margin-bottom: 15px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--primary);
            margin-bottom: 5px;
            letter-spacing: 0.03em;
        }
        .form-group label .required {
            color: #d4644a;
            margin-left: 2px;
        }
        .form-group input {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-family: var(--font-sans);
            background: var(--input-bg);
            color: var(--text);
            transition: var(--transition);
        }
        .form-group input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(200, 164, 92, 0.07);
        }
        .form-group input::placeholder {
            color: #bfb8ab;
        }

        /* 隐藏字段信息展示 */
        .hidden-info {
            font-size: 0.9rem;
            color: var(--text-light);
            background: #fafaf6;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            margin-bottom: 32px;
            letter-spacing: 0.02em;
            border: 1px dashed #e0d5c7;
        }
        .hidden-info span {
            font-weight: 600;
            color: var(--primary);
        }

        /* 立体按钮样式 - 提交按钮 */
        .btn-submit-2 {
            display: block;
            width: 100%;
            padding: 16px 24px;
            background-color: #58BD38;
            color: #fff;
            border: none;
            border-bottom: 6px solid #999999;
            border-radius: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            cursor: pointer;
            transition: all 0.15s ease;
            font-family: var(--font-sans);
            margin-top: 36px;
            box-shadow: 0 4px 14px rgba(168, 135, 61, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.15);
            position: relative;
            top: 0;
            text-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
        }
        .btn-submit-2:hover {
            background-color: #4A9D2F;
            box-shadow: 0 6px 20px rgba(168, 135, 61, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.2);
            transform: translateY(-1px);
            border-bottom-width: 6px;
        }
        .btn-submit-2:active {
            background-color: #4A9D2F;
            box-shadow: 0 2px 8px rgba(168, 135, 61, 0.25), inset 0 2px 4px rgba(0, 0, 0, 0.2);
            transform: translateY(2px);
            border-bottom-width: 6px;
            transition: all 0.05s ease;
        }
        .btn-submit-2:disabled {
            background-color: #4A9D2F;
            border-bottom-color: #9b8b6e;
            cursor: not-allowed;
            transform: none;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }
		
		/* 绿色立体提交按钮 */
		.btn-submit {
			width: 100%;
			background: linear-gradient(180deg, #6ee78e 0%, #58BD38 100%);
			border: none;
			color: white;
			font-weight: 700;
			font-size: 20px;
			padding: 18px;
			border-radius: 10px;
			display: flex;
			align-items: center;
			justify-content: center;
			gap: 12px;
			cursor: pointer;
			box-shadow: 0 10px 0 #3a8b26, 0 12px 28px rgba(0,0,0,0.12), inset 0 1px 3px rgba(255,255,255,0.5);
			transition: 0.1s;
			border: 1px solid rgba(255,255,255,0.25);
			text-shadow: 0 1px 2px rgba(0,0,0,0.15);
		}
		.btn-submit:active {
			transform: translateY(5px);
			box-shadow: 0 5px 0 #3a8b26, 0 8px 16px rgba(0,0,0,0.1), inset 0 1px 3px rgba(255,255,255,0.5);
		}


        /* 页脚 */
        .footer-note {
            text-align: center;
            font-size: 0.9rem;
            color: #b0a595;
            letter-spacing: 0em;
            padding: 10px 0 20px 0;
        }
        .footer-note a {
            color: #b0a595;
			text-decoration:none;

        }

        /* 响应式 */
        @media (max-width: 760px) {
            .card {
                padding: 30px 30px 70px 30px;
            }
            .header h1 {
                font-size: 1.8rem;
            }
            .type-selector {
                flex-direction: column;
                gap: 10px;
            }
            .type-card {
                min-width: auto;
                padding: 14px 12px;
            }
            .type-card .type-icon {
                font-size: 28px;
            }
            .result-box .result-row {
                font-size: 0.95rem;
                flex-wrap: wrap;
            }
            .result-box .result-total .value {
                font-size: 1.1rem;
            }
            .btn-calculate,
            .btn-submit {
                font-size: 1.2rem;
                padding: 16px 18px;
            }
        }