:root {
            --primary: #1a3c5e;
            --primary-light: #1e5490;
            --accent: #e8871e;
            --accent-hover: #f59e3b;
            --bg: #f0f4f8;
            --card-bg: #ffffff;
            --text: #2d3748;
            --text-light: #5a6c7d;
            --border: #e2e8f0;
            --success: #2ecc71;
            --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
            --shadow-md: 0 4px 20px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,.12), 0 4px 12px rgba(0,0,0,.06);
            --shadow-xl: 0 20px 60px rgba(0,0,0,.18), 0 8px 20px rgba(0,0,0,.08);
            --radius-sm: 10px;
            --radius: 16px;
            --radius-lg: 20px;
            --transition: .3s cubic-bezier(.4,0,.2,1);
            --transition-fast: .2s cubic-bezier(.4,0,.2,1);
            --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

        /* particles background */
        .bg-particles {
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: 0;
            overflow: hidden;
        }

        .bg-particle {
            position: absolute;
            border-radius: 50%;
            background: rgba(26, 60, 94, 0.08);
            animation: floatUp linear infinite;
        }

        @keyframes floatUp {
            0% {
                transform: translateY(105vh) scale(0);
                opacity: 0;
            }
            10% {
                opacity: 1;
            }
            90% {
                opacity: 1;
            }
            100% {
                transform: translateY(-10vh) scale(1.5);
                opacity: 0;
            }
        }

        /* main card wrapper */
        .agate-crane-wrapper {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 880px;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: clamp(24px, 4vw, 44px) clamp(20px, 3.5vw, 40px);
            backdrop-filter: blur(0px);
            transition: all 0.2s ease;
            margin-top: 20px;
            margin-bottom: 20px;
        }

        .agate-crane-wrapper::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 5px;
            /*background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary-light), var(--accent));*/
            background-size: 300% 100%;
            animation: gradientBar 4s ease infinite;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        @keyframes gradientBar {
            0%, 100% {
                background-position: 0% 50%;
            }
            50% {
                background-position: 100% 50%;
            }
        }

        /* header */
        .wizard-header {
            text-align: center;
            margin-bottom: 24px;
            padding-top: 8px;
        }

        .wizard-header .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 225px;
            height: 72px;
            /*background: linear-gradient(135deg, var(--primary), var(--primary-light));*/
            border-radius: 16px;
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 14px;
            box-shadow: 0 8px 24px rgba(26, 60, 94, 0.3);
            animation: logoPulse 3s ease-in-out infinite;
        }

        @keyframes logoPulse {
            0%, 100% {
                box-shadow: 0 8px 24px rgba(26, 60, 94, 0.25);
            }
            50% {
                box-shadow: 0 12px 32px rgba(26, 60, 94, 0.45);
            }
        }

        .wizard-header h2 {
            font-size: clamp(1.3rem, 2.5vw, 1.7rem);
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
        }

        .wizard-header .subtitle {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-top: 6px;
        }

        /* breadcrumb */
        .breadcrumb-wrap {
            display: none;
            align-items: center;
            justify-content: flex-start;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 28px;
            padding: 12px 18px;
            background: #f8fafc;
            border-radius: 40px;
            font-size: 0.78rem;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: thin;
            border: 1px solid var(--border);
        }

        .breadcrumb-step {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 12px;
            border-radius: 30px;
            background: #e8ecf1;
            color: #5a6c7d;
            font-weight: 500;
            font-size: 0.75rem;
            transition: all var(--transition-fast);
            cursor: default;
            flex-shrink: 0;
        }

        .breadcrumb-step.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 3px 10px rgba(26, 60, 94, 0.3);
        }

        .breadcrumb-step.passed {
            background: #dce8f4;
            color: var(--primary-light);
            cursor: pointer;
        }

        .breadcrumb-step.passed:hover {
            background: #c5d8eb;
            transform: translateY(-1px);
        }

        .breadcrumb-arrow {
            color: #b0bec5;
            font-size: 0.65rem;
            flex-shrink: 0;
        }

        /* question area */
        .question-area {
            animation: fadeSlideIn 0.4s ease-out;
        }

        @keyframes fadeSlideIn {
            from {
                opacity: 0;
                transform: translateY(18px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .question-label {
            text-align: center;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--accent);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .question-title {
            text-align: center;
            font-size: clamp(1.15rem, 2.2vw, 1.5rem);
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 28px;
            line-height: 1.3;
        }

        /* options grid */
        .options-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
            margin-bottom: 28px;
        }

        .options-grid.two-col {
            grid-template-columns: repeat(2, 1fr);
        }

        .options-grid.three-col {
            grid-template-columns: repeat(3, 1fr);
        }

        /* option card */
        .option-card {
            position: relative;
            background: #fafcfd;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            padding: clamp(14px, 2vw, 22px) 12px;
            cursor: pointer;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
            overflow: hidden;
        }

        .option-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at center, rgba(26, 60, 94, 0.04) 0%, transparent 70%);
            opacity: 0;
            transition: opacity var(--transition);
            pointer-events: none;
        }

        .option-card:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
            background: #fff;
        }

        .option-card:hover::after {
            opacity: 1;
        }

        .option-card:active {
            transform: scale(0.97);
        }

        .option-card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #e8f0f8, #dce6f2);
            color: var(--primary);
            font-size: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
        }

        .option-card:hover .card-icon {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 8px 22px rgba(26, 60, 94, 0.3);
            transform: scale(1.05);
        }

        .option-card .card-label {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text);
        }

        .option-card .card-desc {
            font-size: 0.75rem;
            color: var(--text-light);
            line-height: 1.4;
        }

        .option-card .card-hint {
            font-size: 0.68rem;
            color: #a0b0c0;
            font-style: italic;
        }

        /* navigation row */
        .nav-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 12px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .back-btn, .restart-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            border: 1.5px solid var(--border);
            background: #f1f5f9;
            color: var(--text-light);
        }

        .back-btn:hover, .restart-btn:hover {
            background: #fff;
            border-color: var(--primary-light);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        .restart-btn {
            background: transparent;
            border-color: var(--border);
        }

        .restart-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: #fff8f0;
        }

        /* result area */
        .result-area {
            animation: resultReveal 0.5s ease-out;
        }

        @keyframes resultReveal {
            from {
                opacity: 0;
                transform: scale(0.96) translateY(20px);
            }
            to {
                opacity: 1;
                transform: scale(1) translateY(0);
            }
        }

        .product-card {
            background: linear-gradient(145deg, #ffffff, #f8fafc);
            border: 2px solid #dce6f2;
            border-radius: var(--radius-lg);
            padding: clamp(22px, 3vw, 34px);
            text-align: center;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }

        .product-card .glow-dot {
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 135, 30, 0.12) 0%, transparent 70%);
            top: -60px;
            right: -60px;
            pointer-events: none;
        }

        .product-icon-big {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), #f5a623);
            color: #fff;
            font-size: 34px;
            margin-bottom: 18px;
            box-shadow: 0 12px 30px rgba(232, 135, 30, 0.4);
            animation: iconBounce 2.2s ease infinite;
        }

        @keyframes iconBounce {
            0%, 100% {
                transform: translateY(0);
            }
            30% {
                transform: translateY(-8px);
            }
            60% {
                transform: translateY(0);
            }
            80% {
                transform: translateY(-4px);
            }
        }

        .product-card h3 {
            font-size: clamp(1.3rem, 2.3vw, 1.8rem);
            color: var(--primary);
            font-weight: 800;
            margin-bottom: 6px;
        }

        .product-type-tag {
            display: inline-block;
            background: #e8f0f8;
            color: var(--primary-light);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .product-desc {
            color: var(--text-light);
            font-size: 0.9rem;
            line-height: 1.55;
            margin-bottom: 18px;
        }

        .product-specs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 18px;
        }

        .product-spec {
            background: #f1f5f9;
            border-radius: 40px;
            padding: 6px 16px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 6px;
            border: 1px solid var(--border);
        }

        .product-spec i {
            color: var(--accent);
        }

        .features-list {
            text-align: left;
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            display: inline-block;
        }

        .features-list li {
            padding: 6px 0;
            font-size: 0.85rem;
            color: var(--text);
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .features-list li i {
            color: var(--success);
            margin-top: 2px;
        }

        .best-for {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 22px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), #f59e3b);
            border: none;
            color: #fff;
            padding: 12px 32px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            cursor: pointer;
            transition: all 0.25s ease;
            box-shadow: 0 8px 20px rgba(232, 135, 30, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(232, 135, 30, 0.6);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .result-nav-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 24px;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* sparkle animation */
        .sparkle {
            position: absolute;
            pointer-events: none;
            border-radius: 50%;
            animation: sparkleBurst 0.85s ease-out forwards;
            z-index: 9999;
        }

        @keyframes sparkleBurst {
            0% {
                transform: translate(0, 0) scale(1);
                opacity: 1;
            }
            100% {
                transform: translate(var(--sx), var(--sy)) scale(0);
                opacity: 0;
            }
        }

        @media (max-width: 620px) {
            .options-grid.two-col,
            .options-grid.three-col {
                grid-template-columns: repeat(2, 1fr);
            }
            .options-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .wizard-header .logo-icon {
                width: 160px;
                height: 58px;
                font-size: 1rem;
            }
            .product-icon-big {
                width: 64px;
                height: 64px;
                font-size: 28px;
            }
            .agate-crane-wrapper {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 880px;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: clamp(24px, 4vw, 44px) clamp(20px, 3.5vw, 40px);
  backdrop-filter: blur(0px);
  transition: all 0.2s ease;
  margin-top: 70px;
  margin-bottom: 20px;
}
        }