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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.6;
            color: #333;
            overflow-x: hidden;
        }

        .header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 1rem 2rem;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0,0,0,0.1);
        }

        .nav {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            cursor: pointer;
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
            align-items: center;
        }

        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 0.5rem 1rem;
            border-radius: 8px;
        }

        .nav-links a:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .nav-links .cta-button {
            background: white;
            color: #667eea;
            padding: 0.6rem 1.5rem;
            border-radius: 25px;
            font-weight: 600;
        }

        .nav-links .cta-button:hover {
            background: rgba(255, 255, 255, 0.95);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
                flex-direction: column;
                padding: 2rem;
                gap: 1rem;
                transform: translateX(-100%);
                transition: transform 0.3s ease;
                box-shadow: 0 4px 20px rgba(0,0,0,0.2);
            }

            .nav-links.active {
                transform: translateX(0);
            }

            .mobile-menu-btn {
                display: block;
            }
        }

        .hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 120px 2rem 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="white" opacity="0.1"/></svg>');
            animation: float 20s linear infinite;
        }

        @keyframes float {
            from { transform: translateY(0); }
            to { transform: translateY(-100px); }
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            font-weight: 800;
            line-height: 1.2;
            animation: fadeInUp 0.8s ease;
        }

        .hero p {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.95;
            animation: fadeInUp 0.8s ease 0.2s backwards;
        }

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

        .features {
            max-width: 1200px;
            margin: 80px auto;
            padding: 0 2rem;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2.5rem;
            margin-top: 3rem;
        }

        .feature-card {
            padding: 2rem;
            border-radius: 16px;
            background: white;
            box-shadow: 0 4px 6px rgba(0,0,0,0.07);
            transition: all 0.3s ease;
            border: 1px solid #f0f0f0;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.12);
        }

        .feature-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
        }

        .feature-card h3 {
            font-size: 1.4rem;
            margin-bottom: 1rem;
            color: #1a1a1a;
        }

        .feature-card p {
            color: #666;
            line-height: 1.7;
        }

        .section {
            max-width: 1200px;
            margin: 100px auto;
            padding: 0 2rem;
        }

        .section-title {
            font-size: 2.5rem;
            text-align: center;
            margin-bottom: 1rem;
            color: #1a1a1a;
            font-weight: 700;
        }

        .section-subtitle {
            text-align: center;
            color: #666;
            font-size: 1.2rem;
            margin-bottom: 3rem;
        }

        .use-cases {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 3rem;
            margin-top: 3rem;
        }

        .use-case {
            padding: 3rem;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            border-radius: 20px;
            transition: all 0.3s ease;
        }

        .use-case:hover {
            transform: scale(1.03);
        }

        .use-case h3 {
            font-size: 1.6rem;
            margin-bottom: 1rem;
            color: #1a1a1a;
        }

        .use-case p {
            color: #444;
            line-height: 1.8;
        }

        .about {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 80px 2rem;
            margin-top: 100px;
        }

        .about-content {
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
        }

        .about h2 {
            font-size: 2.5rem;
            margin-bottom: 2rem;
        }

        .about p {
            font-size: 1.1rem;
            line-height: 1.9;
            margin-bottom: 1.5rem;
            opacity: 0.95;
        }

        .platforms {
            text-align: center;
            padding: 60px 2rem;
            background: #f9fafb;
        }

        .platforms h3 {
            font-size: 1.8rem;
            margin-bottom: 2rem;
            color: #1a1a1a;
        }

        .platform-badges {
            display: flex;
            gap: 2rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .badge {
            padding: 1rem 2.5rem;
            background: white;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            text-decoration: none;
            color: #333;
            display: inline-block;
        }

        .badge:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
        }

        .examples {
            background: #f9fafb;
            padding: 80px 2rem;
        }

        .examples-content {
            max-width: 1000px;
            margin: 0 auto;
        }

        .examples h3 {
            font-size: 2rem;
            text-align: center;
            margin-bottom: 3rem;
            color: #1a1a1a;
        }

        .habit-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
        }

        .habit-tag {
            padding: 1.2rem;
            background: white;
            border-radius: 12px;
            text-align: center;
            font-weight: 500;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
        }

        .habit-tag:hover {
            transform: translateY(-4px);
            box-shadow: 0 6px 16px rgba(0,0,0,0.12);
        }

        footer {
            background: #1a1a1a;
            color: white;
            padding: 4rem 2rem 2rem;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-section h4 {
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            color: white;
        }

        .footer-section p {
            color: #aaa;
            line-height: 1.8;
            margin-bottom: 1rem;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 0.8rem;
        }

        .footer-links a {
            color: #aaa;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-links a:hover {
            color: #667eea;
        }

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 2rem;
            text-align: center;
            color: #888;
        }

        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1rem;
        }

        .social-link {
            width: 40px;
            height: 40px;
            background: #333;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            font-size: 1.2rem;
            transition: all 0.3s ease;
        }

        .social-link:hover {
            background: #667eea;
            transform: translateY(-3px);
        }

        .page {
            display: none;
        }

        .page.active {
            display: block;
        }

        .legal-page {
            max-width: 900px;
            margin: 100px auto 50px;
            padding: 3rem 2rem;
            background: white;
        }

        .legal-page h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: #1a1a1a;
        }

        .legal-page h2 {
            font-size: 1.8rem;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            color: #1a1a1a;
        }

        .legal-page p {
            margin-bottom: 1.5rem;
            line-height: 1.8;
            color: #444;
        }

        .legal-page ul {
            margin-bottom: 1.5rem;
            margin-left: 2rem;
            line-height: 1.8;
            color: #444;
        }

        .legal-page li {
            margin-bottom: 0.5rem;
        }

        .back-link {
            display: inline-block;
            color: #667eea;
            text-decoration: none;
            margin-bottom: 2rem;
            font-weight: 500;
        }

        .back-link:hover {
            text-decoration: underline;
        }

        .last-updated {
            color: #888;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .hero p {
                font-size: 1.1rem;
            }
            
            .section-title {
                font-size: 2rem;
            }
        }