:root {
            --primary: #ff6b9d;
            --primary-light: #ff8fab;
            --secondary: #4ecdc4;
            --accent: #ffe66d;
            --gray-50: #f9fafb;
            --gray-600: #4b5563;
            --gray-800: #1f2937;
            --gray-900: #111827;
            --bg-primary: #0a0a0a;
            --bg-secondary: #1a1a2e;
            --surface-elevated: rgba(255, 107, 157, 0.1);
            --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            --space-md: 1rem;
            --space-lg: 1.5rem;
            --space-xl: 2rem;
            --space-2xl: 3rem;
            --space-3xl: 4rem;
            --space-4xl: 6rem;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --radius-full: 9999px;
            --shadow-lg: 0 10px 15px -3px rgba(255, 107, 157, 0.2), 0 4px 6px -2px rgba(255, 107, 157, 0.1);
            --shadow-2xl: 0 25px 50px -12px rgba(255, 107, 157, 0.4);
            --shadow-neon: 0 0 20px rgba(255, 107, 157, 0.5), 0 0 40px rgba(255, 107, 157, 0.3);
            --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: #e2e8f0;
            line-height: 1.6;
            position: relative;
            overflow-x: hidden;
        }

        /* Anime-style floating particles background */
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(2px 2px at 20px 30px, var(--primary), transparent),
                radial-gradient(2px 2px at 40px 70px, var(--secondary), transparent),
                radial-gradient(1px 1px at 90px 40px, var(--accent), transparent),
                radial-gradient(1px 1px at 130px 80px, var(--primary-light), transparent);
            background-repeat: repeat;
            background-size: 200px 100px;
            animation: sakura 15s linear infinite;
            opacity: 0.3;
            z-index: -1;
        }

        @keyframes sakura {
            0% {
                transform: translateY(0) rotate(0deg);
            }

            100% {
                transform: translateY(-100px) rotate(360deg);
            }
        }

        .hero {
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--primary) 100%);
            color: white;
            padding: var(--space-4xl) var(--space-xl);
            text-align: center;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 107, 157, 0.3);
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: var(--space-md);
            background: rgba(255, 107, 157, 0.2);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 107, 157, 0.3);
            padding: var(--space-md);
            border-radius: var(--radius-full);
            font-size: 0.875rem;
            font-weight: 500;
            margin-bottom: var(--space-xl);
            animation: fadeInUp 0.6s ease-out;
            box-shadow: var(--shadow-neon);
        }

        .hero-title {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 800;
            margin: 0 0 var(--space-lg) 0;
            text-shadow: 0 4px 20px rgba(255, 107, 157, 0.5);
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent) 50%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: fadeInUp 0.6s ease-out 0.2s both;
        }

        .hero-subtitle {
            font-size: clamp(1.125rem, 2vw, 1.25rem);
            opacity: 0.9;
            margin: 0 0 var(--space-2xl) 0;
            animation: fadeInUp 0.6s ease-out 0.4s both;
        }

        .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: var(--space-md);
            background: rgba(255, 107, 157, 0.2);
            backdrop-filter: blur(10px);
            border: 1px solid var(--primary);
            color: white;
            padding: var(--space-md) var(--space-xl);
            text-decoration: none;
            border-radius: var(--radius-full);
            font-weight: 600;
            transition: var(--transition-base);
            animation: fadeInUp 0.6s ease-out 0.6s both;
            box-shadow: var(--shadow-neon);
        }

        .hero-cta:hover {
            background: rgba(255, 107, 157, 0.3);
            transform: translateY(-2px);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-xl);
        }

        .section {
            padding: var(--space-4xl) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--space-3xl);
        }

        .section-title {
            font-size: clamp(2rem, 4vw, 2.5rem);
            font-weight: 700;
            color: #e2e8f0;
            margin: 0 0 var(--space-md) 0;
        }

        .section-subtitle {
            font-size: 1.125rem;
            color: #94a3b8;
            max-width: 600px;
            margin: 0 auto;
        }

        .calculator-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
            gap: var(--space-xl);
            margin: var(--space-3xl) 0;
        }

        .calculator-card {
            background: var(--surface-elevated);
            backdrop-filter: blur(10px);
            border-radius: var(--radius-xl);
            padding: var(--space-2xl);
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(255, 107, 157, 0.2);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .calculator-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            transform: scaleX(0);
            transition: var(--transition-base);
        }

        .calculator-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-neon);
            border-color: var(--primary);
        }

        .calculator-card:hover::before {
            transform: scaleX(1);
        }

        .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: var(--radius-lg);
            font-size: 2rem;
            margin-bottom: var(--space-lg);
            box-shadow: var(--shadow-neon);
        }

        .card-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: #e2e8f0;
            margin: 0 0 var(--space-md) 0;
        }

        .card-description {
            color: #94a3b8;
            margin: 0 0 var(--space-xl) 0;
            line-height: 1.7;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: var(--space-md);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: white;
            padding: var(--space-md) var(--space-lg);
            text-decoration: none;
            border-radius: var(--radius-full);
            font-weight: 600;
            transition: var(--transition-base);
            box-shadow: var(--shadow-lg);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-neon);
        }

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

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .float-animation {
            animation: float 3s ease-in-out infinite;
        }

        @keyframes float {

            0%,
            100% {
                transform: translateY(0px);
            }

            50% {
                transform: translateY(-10px);
            }
        }

        @media (max-width: 768px) {
            .hero {
                padding: var(--space-3xl) var(--space-md);
            }

            .calculator-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }

            .container {
                padding: 0 var(--space-md);
            }
        }