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

        :root {
            --primary-dark: #0A0A0A;
            --secondary-dark: #141414;
            --card-dark: #1C1C1C;
            --accent-orange: #FF5733;
            --accent-orange-hover: #E64A2E;
            --text-primary: #FFFFFF;
            --text-secondary: #888888;
            --border-color: #2A2A2A;
            --success-green: #00D632;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            background-color: var(--primary-dark);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Navigation */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(10, 10, 10, 0.9);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }

        .logo {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -1px;
            color: var(--accent-orange);
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: 80px;
            position: relative;
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 80px;
            align-items: center;
            width: 100%;
        }

        .hero-text h1 {
            font-size: clamp(56px, 7vw, 80px);
            font-weight: 400;
            line-height: 1;
            letter-spacing: -3px;
            margin-bottom: 32px;
            margin-top: 40px;
        }

        .hero-text h2 {
            font-size: 24px;
            font-weight: 200;
            color: var(--text-secondary);
            margin-bottom: 48px;
            line-height: 1.4;
        }

        /* Waitlist Form */
        .waitlist-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
        }

        .waitlist-form input {
            flex: 1;
            padding: 18px 24px;
            background: var(--secondary-dark);
            border: 2px solid transparent;
            border-radius: 16px;
            color: var(--text-primary);
            font-size: 16px;
            transition: all 0.3s ease;
        }

        .waitlist-form input::placeholder {
            color: #666;
        }

        .waitlist-form input:focus {
            outline: none;
            border-color: var(--accent-orange);
            background: rgba(255, 87, 51, 0.05);
        }

        .waitlist-form button {
            padding: 18px 32px;
            background: var(--accent-orange);
            color: white;
            border: none;
            border-radius: 16px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .waitlist-form button:hover {
            background: var(--accent-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255, 87, 51, 0.3);
        }
        .success-message {
        margin-top: 1rem;
        color: #90ee90;
        font-weight: 500;
        }

        /* App Preview */
        .app-preview {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .phone-mockup {
            width: 320px;
            height: 640px;
            background: var(--secondary-dark);
            border-radius: 40px;
            padding: 12px;
            box-shadow: 0 30px 80px rgba(0, 0, 0, 0.8);
            position: relative;
        }

        .phone-screen {
            width: 100%;
            height: 100%;
            background: #000;
            border-radius: 28px;
            overflow: hidden;
            position: relative;
        }

        .app-header {
            background: var(--primary-dark);
            padding: 20px;
            text-align: center;
            border-bottom: 1px solid var(--border-color);
        }

        .balance-section {
            padding: 32px 20px;
            text-align: center;
        }

        .balance-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }

        .balance-amount {
            font-size: 48px;
            font-weight: 700;
            letter-spacing: -2px;
        }

        .quick-actions {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            padding: 0 20px;
        }

        .action-button {
            background: var(--card-dark);
            border-radius: 16px;
            padding: 20px;
            text-align: center;
            border: 1px solid var(--border-color);
        }

        .action-icon {
            font-size: 24px;
            margin-bottom: 8px;
        }

        .action-label {
            font-size: 14px;
            color: var(--text-primary);
        }

        .virtual-cards {
            padding: 20px;
            margin-top: 24px;
        }

        .section-title {
            font-size: 18px;
            margin-bottom: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .add-card-btn {
            width: 32px;
            height: 32px;
            background: var(--accent-orange);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            cursor: pointer;
        }

        .mini-card {
            background: linear-gradient(135deg, var(--card-dark) 0%, #2A2A2A 100%);
            border-radius: 12px;
            padding: 16px;
            margin-bottom: 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .mini-card-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .mini-card-icon {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .mini-card-details h4 {
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 2px;
        }

        .mini-card-details p {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .card-amount {
            font-size: 16px;
            font-weight: 600;
        }
         /* FAQ Section */
        .faq {
            padding: 120px 0;
            background: var(--primary-dark);
        }

        .faq-header {
            text-align: center;
            margin-bottom: 80px;
        }

        .faq-header h2 {
            font-size: 48px;
            font-weight: 700;
            letter-spacing: -2px;
            margin-bottom: 16px;
        }

        .faq-header p {
            font-size: 20px;
            color: var(--text-secondary);
        }

        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 24px 0;
        }

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 18px;
            font-weight: 500;
            text-align: left;
            cursor: pointer;
            padding: 0;
            transition: color 0.3s ease;
        }

        .faq-question:hover {
            color: var(--accent-orange);
        }

        .faq-icon {
            transition: transform 0.3s ease;
            color: var(--text-secondary);
            flex-shrink: 0;
        }

        .faq-question.active .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }

        .faq-answer.active {
            max-height: 300px;
            padding-top: 16px;
        }

        .faq-answer p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.6;
        }

        /* Features Grid */
        .features {
            padding: 120px 0;
        }

        .features-intro {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 80px;
        }

        .features-intro h2 {
            font-size: 48px;
            font-weight: 400;
            letter-spacing: -2px;
            margin-bottom: 24px;
        }

        .features-intro p {
            font-size: 20px;
            color: var(--text-secondary);
        }

        .features-showcase {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 80px;
            align-items: center;
            margin-bottom: 120px;
        }

        .feature-content h3 {
            font-size: 36px;
            font-weight: 200;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }

        .feature-content p {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 32px;
        }

        .feature-visual {
            display: flex;
            justify-content: center;
        }

        .card-stack {
            position: relative;
            width: 300px;
            height: 200px;
        }

        .stacked-card {
            position: absolute;
            width: 300px;
            height: 180px;
            background: linear-gradient(135deg, #2A2A2A 0%, #1A1A1A 100%);
            border-radius: 20px;
            padding: 24px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
            transition: all 0.3s ease;
        }

        .stacked-card:nth-child(1) {
            transform: rotate(-5deg) translateY(0);
            z-index: 1;
        }

        .stacked-card:nth-child(2) {
            transform: rotate(0deg) translateY(20px);
            z-index: 2;
        }

        .stacked-card:nth-child(3) {
            transform: rotate(5deg) translateY(40px);
            z-index: 3;
            background: linear-gradient(135deg, var(--accent-orange) 0%, #C0392B 100%);
        }

        .card-stack:hover .stacked-card:nth-child(1) {
            transform: rotate(-8deg) translateY(-10px);
        }

        .card-stack:hover .stacked-card:nth-child(2) {
            transform: rotate(0deg) translateY(20px);
        }

        .card-stack:hover .stacked-card:nth-child(3) {
            transform: rotate(8deg) translateY(50px);
        }

        /* Simple Features */
        .simple-features {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 48px;
            margin-top: 80px;
        }

        .simple-feature {
            text-align: center;
        }

        .simple-feature h4 {
            font-size: 24px;
            margin-bottom: 12px;
            font-weight: 400;
        }

        .simple-feature p {
            color: var(--text-secondary);
            font-size: 16px;
        }

        /* CTA Section */
        .cta {
            padding: 120px 0;
            text-align: center;
            background: var(--secondary-dark);
            border-radius: 32px;
            margin: 0 24px 80px;
        }

        .cta h2 {
            font-size: 56px;
            font-weight: 500;
            letter-spacing: -2px;
            margin-bottom: 24px;
        }

        .cta p {
            font-size: 20px;
            color: var(--text-secondary);
            margin-bottom: 48px;
        }
        .hidden {
            visibility: hidden;
        }
        /* Footer */
        footer {
            padding: 40px 0;
            text-align: center;
        }

        footer p {
            color: var(--text-secondary);
            font-size: 14px;
        }

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

        .hero-text > * {
            opacity: 0;
            animation: fadeInUp 0.8s ease-out forwards;
        }

        .hero-text h1 { animation-delay: 0.1s; }
        .hero-text h2 { animation-delay: 0.2s; }
        .waitlist-form { animation-delay: 0.3s; }

        .phone-mockup {
            opacity: 0;
            animation: fadeInUp 0.8s ease-out 0.4s forwards;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .hero-content {
                grid-template-columns: 1fr;
                text-align: center;
                gap: 48px;
            }

            .phone-mockup {
                order: -1;
                margin: 0 auto;
                transform: scale(0.8);
            }

            .waitlist-form {
                flex-direction: column;
                margin: 0 auto;
            }

            .features-showcase {
                grid-template-columns: 1fr;
                gap: 48px;
            }

            .simple-features {
                grid-template-columns: 1fr;
            }

            .cta h2 {
                font-size: 36px;
            }
        }