.landing-page {
        background: #f8f9fa;
        width: 100%;
        overflow-x: hidden;
    }

    /* Hero Background */
    .hero-section {
        position: relative;
        background: linear-gradient(135deg, rgba(108, 92, 231, 0.05) 0%, rgba(162, 155, 254, 0.1) 100%);
        overflow: hidden;
    }

    .hero-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-image: url('https://images.unsplash.com/photo-1490730141103-6cac27abb37f?w=800&q=80');
        background-size: cover;
        background-position: center;
        opacity: 0.08;
        z-index: 0;
    }

    .hero-section > * {
        position: relative;
        z-index: 1;
    }

    /* Decorative Elements */
    .hero-decoration {
        position: absolute;
        border-radius: 50%;
        opacity: 0.6;
        z-index: 0;
    }

    .hero-decoration-1 {
        width: 200px;
        height: 200px;
        background: linear-gradient(135deg, #a29bfe 0%, #6c5ce7 100%);
        top: -80px;
        right: -60px;
        filter: blur(60px);
    }

    .hero-decoration-2 {
        width: 150px;
        height: 150px;
        background: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);
        bottom: -40px;
        left: -40px;
        filter: blur(50px);
    }

    .hero-decoration-3 {
        width: 100px;
        height: 100px;
        background: linear-gradient(135deg, #ffeaa7 0%, #fdcb6e 100%);
        top: 40%;
        left: 10%;
        filter: blur(40px);
    }

    /* Top Navigation Header */
    .landing-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 100;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 16px 20px;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
    }

    .landing-header .header-logo {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 1.1rem;
        font-weight: 700;
        color: #6c5ce7;
        text-decoration: none;
    }

    .landing-header .header-logo .nav-logo-icon {
        height: 20px;
        width: auto;
    }

    .landing-header .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    /* Language Switcher */
    .lang-switcher {
        display: flex;
        gap: 4px;
        background: #f0f0f0;
        border-radius: 20px;
        padding: 3px;
    }

    .lang-switcher button {
        background: none;
        border: none;
        color: #666;
        cursor: pointer;
        font-size: 0.8rem;
        padding: 5px 10px;
        border-radius: 16px;
        transition: all 0.2s;
    }

    .lang-switcher button:hover {
        color: #6c5ce7;
    }

    .lang-switcher button.active {
        background: white;
        color: #6c5ce7;
        font-weight: 500;
        box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    }

    .landing-header .header-login-btn {
        padding: 8px 20px;
        background: #6c5ce7;
        color: white;
        text-decoration: none;
        border-radius: 20px;
        font-size: 0.85rem;
        font-weight: 500;
        transition: all 0.2s;
    }

    .landing-header .header-login-btn:hover {
        background: #5b4cdb;
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(108, 92, 231, 0.3);
    }

    /* Hero Section - Additional Styles */
    .hero-section {
        text-align: center;
        padding: 100px 20px 60px;
    }

    .hero-headline {
        font-size: 1.8rem;
        font-weight: 700;
        color: #333;
        line-height: 1.4;
        margin-bottom: 24px;
    }

    .hero-subtext {
        font-size: 1rem;
        color: #666;
        line-height: 1.7;
        margin-bottom: 40px;
    }

    .hero-cta .btn {
        font-size: 1.1rem;
        padding: 16px 48px;
        border-radius: 30px;
    }

    /* Problem Section */
    .problem-section {
        padding: 60px 0;
        background: white;
        margin: 0 -20px;
        padding-left: 20px;
        padding-right: 20px;
    }

    .section-title {
        font-size: 1.4rem;
        font-weight: 700;
        color: #333;
        text-align: center;
        margin-bottom: 32px;
    }

    .problem-list {
        margin-bottom: 32px;
    }

    .problem-item {
        display: flex;
        align-items: flex-start;
        padding: 12px 0;
        color: #666;
        font-size: 0.95rem;
        line-height: 1.5;
    }

    .problem-item::before {
        content: "•";
        color: #e74c3c;
        font-weight: bold;
        margin-right: 12px;
        flex-shrink: 0;
    }

    .problem-conclusion {
        text-align: center;
        padding: 24px;
        background: #f8f9fa;
        border-radius: 16px;
        font-size: 1.1rem;
        color: #333;
        line-height: 1.6;
    }

    .problem-conclusion strong {
        color: #6c5ce7;
    }

    /* Solution Section */
    .solution-section {
        padding: 60px 0;
        position: relative;
        background: linear-gradient(180deg, #f8f9fa 0%, #f0f0f5 50%, #f8f9fa 100%);
    }

    .solution-section::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 300px;
        height: 300px;
        background: radial-gradient(circle, rgba(108, 92, 231, 0.08) 0%, transparent 70%);
        border-radius: 50%;
        z-index: 0;
    }

    .solution-section > * {
        position: relative;
        z-index: 1;
    }

    .solution-formula {
        background: white;
        border-radius: 20px;
        padding: 32px 24px;
        text-align: center;
        box-shadow: 0 4px 20px rgba(108, 92, 231, 0.1);
        margin-bottom: 32px;
    }

    .formula-text {
        font-size: 1.3rem;
        color: #333;
        line-height: 2;
    }

    .formula-text .blank {
        display: inline-block;
        min-width: 100px;
        border-bottom: 2px solid #6c5ce7;
        margin: 0 4px;
    }

    .solution-description {
        text-align: center;
        color: #666;
        font-size: 0.95rem;
        line-height: 1.7;
        margin-bottom: 24px;
    }

    .solution-badge {
        text-align: center;
        padding: 12px 20px;
        background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
        color: white;
        border-radius: 30px;
        font-size: 0.9rem;
        font-weight: 500;
        display: inline-block;
        margin: 0 auto;
        width: fit-content;
    }

    .solution-badge-wrapper {
        text-align: center;
    }

    /* Examples Section */
    .examples-section {
        padding: 60px 0;
        background: white;
        margin: 0 -20px;
        padding-left: 20px;
        padding-right: 20px;
    }

    .example-cards {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }

    .example-card {
        background: #f8f9fa;
        border-radius: 16px;
        padding: 20px;
        border-left: 4px solid #6c5ce7;
    }

    .example-trigger {
        font-size: 0.9rem;
        color: #999;
        margin-bottom: 8px;
    }

    .example-action {
        font-size: 1rem;
        color: #333;
        font-weight: 500;
        margin-bottom: 12px;
    }

    .example-note {
        font-size: 0.85rem;
        color: #6c5ce7;
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .example-note::before {
        content: "💡";
        font-size: 0.9rem;
    }

    /* AI Coach Section */
    .ai-coach-section {
        padding: 60px 20px;
        background: linear-gradient(135deg, rgba(0, 184, 148, 0.08) 0%, rgba(108, 92, 231, 0.08) 100%);
        position: relative;
        overflow: hidden;
    }

    .ai-coach-section::before {
        content: '';
        position: absolute;
        top: 50%;
        right: -100px;
        width: 300px;
        height: 300px;
        background: radial-gradient(circle, rgba(0, 184, 148, 0.15) 0%, transparent 70%);
        border-radius: 50%;
        transform: translateY(-50%);
        z-index: 0;
    }

    .ai-coach-section > * {
        position: relative;
        z-index: 1;
    }

    .ai-coach-intro {
        text-align: center;
        color: #555;
        font-size: 1rem;
        line-height: 1.6;
        margin-bottom: 32px;
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }

    .ai-coach-demo {
        background: white;
        border-radius: 16px;
        padding: 24px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        margin-bottom: 32px;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .ai-demo-input {
        margin-bottom: 20px;
        padding-bottom: 20px;
        border-bottom: 1px dashed #e0e0e0;
    }

    .demo-label {
        font-size: 0.8rem;
        color: #999;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        margin-bottom: 8px;
    }

    .demo-goal {
        font-size: 1.1rem;
        color: #333;
        font-weight: 500;
        padding: 12px 16px;
        background: #f8f9fa;
        border-radius: 8px;
        border-left: 3px solid #00b894;
    }

    .ai-demo-arrow {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        margin: 16px 0;
    }

    .arrow-icon {
        font-size: 1.2rem;
        color: #999;
    }

    .ai-badge {
        background: linear-gradient(135deg, #00b894 0%, #6c5ce7 100%);
        color: white;
        font-size: 0.75rem;
        font-weight: 600;
        padding: 4px 10px;
        border-radius: 12px;
    }

    .ai-demo-output {
        margin-top: 20px;
    }

    .demo-habits {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .demo-habit {
        display: flex;
        flex-direction: column;
        gap: 4px;
        padding: 12px;
        background: #f8f9fa;
        border-radius: 8px;
        border-left: 3px solid #6c5ce7;
    }

    .demo-trigger {
        font-size: 0.85rem;
        color: #999;
    }

    .demo-action {
        font-size: 0.95rem;
        color: #333;
        font-weight: 500;
    }

    .ai-coach-benefits {
        display: flex;
        flex-direction: column;
        gap: 16px;
        max-width: 400px;
        margin: 0 auto;
    }

    .benefit-item {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 12px 16px;
        background: white;
        border-radius: 12px;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    }

    .benefit-icon {
        font-size: 1.5rem;
        flex-shrink: 0;
    }

    .benefit-text {
        font-size: 0.95rem;
        color: #333;
        font-weight: 500;
    }

    /* Pricing Preview Section */
    .pricing-preview-section {
        padding: 60px 20px;
        background: white;
    }

    .pricing-intro {
        text-align: center;
        color: #666;
        font-size: 1rem;
        line-height: 1.6;
        margin-bottom: 32px;
    }

    .pricing-cards {
        display: flex;
        flex-direction: column;
        gap: 20px;
        max-width: 800px;
        margin: 0 auto 24px;
    }

    .pricing-card {
        background: #f8f9fa;
        border-radius: 16px;
        padding: 28px 24px;
        text-align: center;
        position: relative;
        border: 2px solid transparent;
        transition: all 0.3s ease;
    }

    .pricing-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    }

    .pricing-card-featured {
        background: white;
        border-color: #6c5ce7;
        box-shadow: 0 4px 20px rgba(108, 92, 231, 0.15);
    }

    .featured-badge {
        position: absolute;
        top: -12px;
        left: 50%;
        transform: translateX(-50%);
        background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
        color: white;
        font-size: 0.75rem;
        font-weight: 600;
        padding: 6px 16px;
        border-radius: 20px;
        white-space: nowrap;
    }

    .plan-name {
        font-size: 1.3rem;
        font-weight: 700;
        color: #333;
        margin-bottom: 12px;
    }

    .plan-price {
        margin-bottom: 20px;
    }

    .price-amount {
        font-size: 2rem;
        font-weight: 700;
        color: #6c5ce7;
    }

    .price-period {
        font-size: 0.9rem;
        color: #999;
    }

    .plan-features {
        list-style: none;
        padding: 0;
        margin: 0 0 24px;
        text-align: left;
    }

    .plan-features li {
        padding: 8px 0;
        color: #555;
        font-size: 0.9rem;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .plan-features li::before {
        content: "✓";
        color: #00b894;
        font-weight: bold;
        flex-shrink: 0;
    }

    .pricing-card .btn {
        width: 100%;
        padding: 12px 24px;
        border-radius: 25px;
        font-size: 0.95rem;
        font-weight: 500;
        text-decoration: none;
        transition: all 0.2s;
    }

    .pricing-card .btn-outline {
        background: transparent;
        border: 2px solid #6c5ce7;
        color: #6c5ce7;
    }

    .pricing-card .btn-outline:hover {
        background: #6c5ce7;
        color: white;
    }

    .pricing-card .btn-primary {
        background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
        border: none;
        color: white;
    }

    .pricing-card .btn-primary:hover {
        transform: translateY(-1px);
        box-shadow: 0 4px 15px rgba(108, 92, 231, 0.4);
    }

    .pricing-note {
        text-align: center;
        color: #00b894;
        font-size: 0.9rem;
        font-weight: 500;
    }

    /* Features Section */
    .features-section {
        padding: 60px 0;
        position: relative;
        background: linear-gradient(180deg, #f8f9fa 0%, #fafafa 100%);
    }

    .features-section::before {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 200px;
        background: linear-gradient(180deg, transparent 0%, rgba(108, 92, 231, 0.03) 100%);
        z-index: 0;
    }

    .features-section > * {
        position: relative;
        z-index: 1;
    }

    .feature-cards {
        display: flex;
        flex-direction: column;
        gap: 20px;
    }

    .feature-cards-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 0 20px;
    }

    .feature-card {
        background: white;
        border-radius: 16px;
        padding: 24px;
        box-shadow: 0 2px 12px rgba(0,0,0,0.06);
        display: flex;
        align-items: flex-start;
        gap: 16px;
    }

    .feature-icon {
        width: 48px;
        height: 48px;
        background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.4rem;
        flex-shrink: 0;
    }

    .feature-content h3 {
        font-size: 1rem;
        color: #333;
        font-weight: 600;
        margin-bottom: 8px;
    }

    .feature-content p {
        font-size: 0.9rem;
        color: #666;
        line-height: 1.5;
    }

    /* Expert Quotes Section */
    .quotes-section {
        padding: 60px 20px;
        background: linear-gradient(135deg, rgba(108, 92, 231, 0.08) 0%, rgba(162, 155, 254, 0.12) 100%);
        position: relative;
        overflow: hidden;
    }

    .quotes-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-image: url('https://images.unsplash.com/photo-1507842217343-583bb7270b66?w=1200&q=80');
        background-size: cover;
        background-position: center;
        opacity: 0.1;
        z-index: 0;
    }

    .quotes-section > * {
        position: relative;
        z-index: 1;
    }

    .quotes-intro {
        text-align: center;
        color: #555;
        font-size: 1rem;
        line-height: 1.6;
        margin-bottom: 40px;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .quote-cards {
        display: flex;
        flex-direction: column;
        gap: 20px;
        margin-bottom: 40px;
    }

    .quote-card {
        background: white;
        border-radius: 16px;
        padding: 24px;
        border-left: 4px solid #6c5ce7;
        box-shadow: 0 4px 20px rgba(108, 92, 231, 0.1);
    }

    .quote-text {
        font-size: 1rem;
        color: #333;
        line-height: 1.7;
        font-style: italic;
        margin-bottom: 16px;
    }

    .quote-author {
        display: flex;
        flex-direction: column;
        gap: 4px;
    }

    .author-name {
        font-size: 0.95rem;
        font-weight: 600;
        color: #6c5ce7;
    }

    .author-title {
        font-size: 0.85rem;
        color: #999;
    }

    .science-note {
        background: white;
        border-radius: 16px;
        padding: 24px;
        display: flex;
        align-items: flex-start;
        gap: 16px;
        max-width: 700px;
        margin: 0 auto;
        box-shadow: 0 4px 20px rgba(108, 92, 231, 0.1);
    }

    .science-icon {
        font-size: 2rem;
        flex-shrink: 0;
    }

    .science-note p {
        font-size: 0.95rem;
        color: #555;
        line-height: 1.6;
        margin: 0;
    }

    /* Final CTA Section */
    .final-cta-section {
        padding: 60px 20px 40px;
        text-align: center;
        margin: 0 -20px;
        position: relative;
        overflow: hidden;
        background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
    }

    .final-cta-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-image: url('https://images.unsplash.com/photo-1506905925346-21bda4d32df4?w=800&q=80');
        background-size: cover;
        background-position: center;
        opacity: 0.15;
        z-index: 0;
    }

    .final-cta-section > * {
        position: relative;
        z-index: 1;
    }

    .final-headline {
        font-size: 1.5rem;
        font-weight: 700;
        color: white;
        margin-bottom: 16px;
        text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }

    .final-subtext {
        font-size: 1rem;
        color: rgba(255,255,255,0.9);
        line-height: 1.6;
        margin-bottom: 12px;
    }

    .final-formula {
        font-size: 1.1rem;
        color: white;
        margin-bottom: 32px;
        font-weight: 500;
    }

    .final-formula .blank {
        display: inline-block;
        min-width: 60px;
        border-bottom: 2px solid rgba(255,255,255,0.8);
        margin: 0 4px;
    }

    .final-cta .btn {
        font-size: 1.1rem;
        padding: 16px 48px;
        border-radius: 30px;
        margin-bottom: 16px;
        background: white;
        color: #6c5ce7;
        box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    }

    .final-cta .btn:hover {
        background: #f8f9fa;
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(0,0,0,0.25);
    }

    .final-note {
        font-size: 0.85rem;
        color: rgba(255,255,255,0.8);
    }

    .login-link {
        margin-top: 24px;
        font-size: 0.9rem;
        color: rgba(255,255,255,0.9);
    }

    .login-link a {
        color: white;
        text-decoration: underline;
        font-weight: 500;
    }

    /* Footer */
    .landing-footer {
        padding: 40px 0;
        text-align: center;
        background: #2d3436;
        margin: 0 -20px;
        padding-left: 20px;
        padding-right: 20px;
    }

    .footer-slogan {
        font-size: 0.95rem;
        color: #a29bfe;
        font-weight: 500;
        margin-bottom: 12px;
    }

    .footer-links {
        margin-bottom: 16px;
    }

    .footer-links a {
        color: rgba(255,255,255,0.7);
        text-decoration: none;
        font-size: 0.85rem;
        transition: color 0.2s;
    }

    .footer-links a:hover {
        color: #a29bfe;
    }

    .footer-links .divider {
        color: rgba(255,255,255,0.3);
        margin: 0 12px;
    }

    .footer-copyright {
        font-size: 0.8rem;
        color: rgba(255,255,255,0.5);
    }

    /* ==========================================
       RESPONSIVE STYLES
       ========================================== */

    /* Tablet (768px and up) */
    @media (min-width: 768px) {
        /* Header */
        .landing-header {
            padding: 18px 40px;
        }

        .landing-header .header-logo {
            font-size: 1.25rem;
            gap: 10px;
        }

        .landing-header .header-logo .nav-logo-icon {
            height: 20px;
        }

        .landing-header .header-login-btn {
            padding: 10px 24px;
            font-size: 0.9rem;
        }

        /* Hero Section */
        .hero-section {
            padding: 140px 40px 100px;
        }

        .hero-headline {
            font-size: 2.5rem;
            margin-bottom: 32px;
        }

        .hero-subtext {
            font-size: 1.2rem;
            margin-bottom: 50px;
        }

        .hero-cta .btn {
            font-size: 1.2rem;
            padding: 18px 60px;
        }

        /* Decorations - larger */
        .hero-decoration-1 {
            width: 300px;
            height: 300px;
            top: -100px;
            right: -80px;
        }

        .hero-decoration-2 {
            width: 250px;
            height: 250px;
            bottom: -80px;
            left: -80px;
        }

        .hero-decoration-3 {
            width: 180px;
            height: 180px;
            left: 15%;
        }

        /* Problem Section */
        .problem-section {
            padding: 80px 40px;
            margin: 0;
        }

        .section-title {
            font-size: 1.8rem;
            margin-bottom: 40px;
        }

        .problem-list {
            max-width: 600px;
            margin: 0 auto 40px;
        }

        .problem-item {
            font-size: 1.1rem;
            padding: 16px 0;
        }

        .problem-conclusion {
            max-width: 500px;
            margin: 0 auto;
            padding: 32px;
            font-size: 1.2rem;
        }

        /* Solution Section */
        .solution-section {
            padding: 80px 40px;
        }

        .solution-formula {
            max-width: 500px;
            margin: 0 auto 40px;
            padding: 40px 32px;
        }

        .formula-text {
            font-size: 1.5rem;
        }

        .formula-text .blank {
            min-width: 140px;
        }

        .solution-description {
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
        }

        /* Examples Section */
        .examples-section {
            padding: 80px 40px;
            margin: 0;
        }

        .example-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            max-width: 800px;
            margin: 0 auto;
        }

        .example-card {
            padding: 24px;
        }

        .example-trigger {
            font-size: 1rem;
        }

        .example-action {
            font-size: 1.1rem;
        }

        /* AI Coach Section */
        .ai-coach-section {
            padding: 80px 40px;
        }

        .ai-coach-intro {
            font-size: 1.1rem;
            max-width: 600px;
        }

        .ai-coach-demo {
            max-width: 700px;
            padding: 32px;
        }

        .demo-goal {
            font-size: 1.2rem;
        }

        .ai-demo-arrow {
            flex-direction: row;
        }

        .demo-habits {
            flex-direction: row;
            flex-wrap: wrap;
        }

        .demo-habit {
            flex: 1;
            min-width: 180px;
        }

        .ai-coach-benefits {
            flex-direction: row;
            justify-content: center;
            max-width: 800px;
            gap: 20px;
        }

        .benefit-item {
            flex: 1;
            flex-direction: column;
            text-align: center;
            padding: 20px;
        }

        .benefit-icon {
            font-size: 2rem;
            margin-bottom: 8px;
        }

        /* Pricing Preview Section */
        .pricing-preview-section {
            padding: 80px 40px;
        }

        .pricing-intro {
            font-size: 1.1rem;
        }

        .pricing-cards {
            flex-direction: row;
            justify-content: center;
            align-items: stretch;
        }

        .pricing-card {
            flex: 1;
            max-width: 350px;
        }

        .pricing-card-featured {
            transform: scale(1.02);
        }

        .pricing-card-featured:hover {
            transform: scale(1.04);
        }

        .plan-name {
            font-size: 1.4rem;
        }

        .price-amount {
            font-size: 2.2rem;
        }

        /* Features Section */
        .features-section {
            padding: 80px 40px;
        }

        .feature-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .feature-cards-grid {
            grid-template-columns: repeat(2, 1fr);
            max-width: 700px;
            padding: 0;
        }

        .feature-card {
            flex-direction: column;
            text-align: center;
            padding: 32px 24px;
        }

        .feature-icon {
            width: 64px;
            height: 64px;
            font-size: 1.8rem;
            margin: 0 auto 16px;
        }

        .feature-content h3 {
            font-size: 1.1rem;
        }

        .feature-content p {
            font-size: 0.95rem;
        }

        /* Expert Quotes Section */
        .quotes-section {
            padding: 80px 40px;
        }

        .quotes-intro {
            font-size: 1.1rem;
        }

        .quote-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: 1000px;
            margin: 0 auto 40px;
        }

        .quote-card {
            border-left: none;
            border-top: 4px solid #6c5ce7;
            padding: 28px;
        }

        .quote-text {
            font-size: 0.95rem;
        }

        .science-note {
            max-width: 800px;
            padding: 28px;
        }

        /* Final CTA Section */
        .final-cta-section {
            padding: 100px 40px 80px;
            margin: 0;
        }

        .final-headline {
            font-size: 2rem;
        }

        .final-subtext {
            font-size: 1.1rem;
        }

        .final-formula {
            font-size: 1.3rem;
        }

        .final-formula .blank {
            min-width: 100px;
        }

        .final-cta .btn {
            font-size: 1.2rem;
            padding: 18px 60px;
        }

        /* Footer */
        .landing-footer {
            padding: 50px 40px;
            margin: 0;
        }

        .footer-slogan {
            font-size: 1.1rem;
        }

        .footer-copyright {
            font-size: 0.85rem;
        }
    }

    /* Desktop (1024px and up) */
    @media (min-width: 1024px) {
        /* Header */
        .landing-header {
            padding: 20px 60px;
        }

        .landing-header .header-logo {
            font-size: 1.4rem;
            gap: 12px;
        }

        .landing-header .header-logo .nav-logo-icon {
            height: 20px;
        }

        .landing-header .header-login-btn {
            padding: 12px 28px;
            font-size: 0.95rem;
        }

        /* Hero Section */
        .hero-section {
            padding: 160px 60px 120px;
        }

        .hero-headline {
            font-size: 3rem;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-subtext {
            font-size: 1.3rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Decorations - even larger */
        .hero-decoration-1 {
            width: 400px;
            height: 400px;
            top: -150px;
            right: 5%;
        }

        .hero-decoration-2 {
            width: 300px;
            height: 300px;
            bottom: -100px;
            left: 5%;
        }

        .hero-decoration-3 {
            width: 200px;
            height: 200px;
            top: 35%;
            left: 20%;
        }

        /* Problem Section */
        .problem-section {
            padding: 100px 60px;
        }

        .section-title {
            font-size: 2rem;
        }

        .problem-list {
            max-width: 700px;
        }

        .problem-item {
            font-size: 1.15rem;
        }

        .problem-conclusion {
            max-width: 600px;
            font-size: 1.3rem;
        }

        /* Solution Section */
        .solution-section {
            padding: 100px 60px;
        }

        .solution-section::before {
            width: 500px;
            height: 500px;
        }

        .solution-formula {
            max-width: 600px;
            padding: 50px 40px;
        }

        .formula-text {
            font-size: 1.7rem;
        }

        .formula-text .blank {
            min-width: 180px;
        }

        .solution-description {
            font-size: 1.15rem;
        }

        .solution-badge {
            font-size: 1rem;
            padding: 14px 28px;
        }

        /* Examples Section */
        .examples-section {
            padding: 100px 60px;
        }

        .example-cards {
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 1100px;
        }

        .example-card {
            border-left: none;
            border-top: 4px solid #6c5ce7;
        }

        /* AI Coach Section */
        .ai-coach-section {
            padding: 100px 60px;
        }

        .ai-coach-section::before {
            width: 400px;
            height: 400px;
            right: 5%;
        }

        .ai-coach-intro {
            font-size: 1.15rem;
        }

        .ai-coach-demo {
            max-width: 800px;
            padding: 40px;
        }

        .demo-goal {
            font-size: 1.3rem;
        }

        .demo-habit {
            padding: 16px;
        }

        .demo-trigger {
            font-size: 0.9rem;
        }

        .demo-action {
            font-size: 1rem;
        }

        .ai-coach-benefits {
            max-width: 900px;
        }

        .benefit-item {
            padding: 24px;
        }

        .benefit-text {
            font-size: 1rem;
        }

        /* Pricing Preview Section */
        .pricing-preview-section {
            padding: 100px 60px;
        }

        .pricing-intro {
            font-size: 1.15rem;
        }

        .pricing-cards {
            gap: 32px;
        }

        .pricing-card {
            padding: 36px 32px;
        }

        .plan-name {
            font-size: 1.5rem;
        }

        .price-amount {
            font-size: 2.5rem;
        }

        .plan-features li {
            font-size: 1rem;
            padding: 10px 0;
        }

        .pricing-card .btn {
            padding: 14px 28px;
            font-size: 1rem;
        }

        .pricing-note {
            font-size: 1rem;
        }

        /* Features Section */
        .features-section {
            padding: 100px 60px;
        }

        .feature-cards {
            gap: 32px;
            max-width: 1100px;
        }

        .feature-cards-grid {
            grid-template-columns: repeat(3, 1fr);
            max-width: 1100px;
        }

        .feature-card {
            padding: 40px 28px;
        }

        .feature-icon {
            width: 72px;
            height: 72px;
            font-size: 2rem;
        }

        .feature-content h3 {
            font-size: 1.2rem;
        }

        .feature-content p {
            font-size: 1rem;
        }

        /* Expert Quotes Section */
        .quotes-section {
            padding: 100px 60px;
        }

        .quotes-intro {
            font-size: 1.15rem;
        }

        .quote-cards {
            gap: 32px;
            max-width: 1100px;
        }

        .quote-card {
            padding: 32px;
        }

        .quote-text {
            font-size: 1rem;
        }

        .author-name {
            font-size: 1rem;
        }

        .science-note {
            max-width: 900px;
            padding: 32px;
        }

        .science-note p {
            font-size: 1rem;
        }

        /* Final CTA Section */
        .final-cta-section {
            padding: 120px 60px 100px;
        }

        .final-headline {
            font-size: 2.5rem;
        }

        .final-subtext {
            font-size: 1.2rem;
        }

        .final-formula {
            font-size: 1.5rem;
        }

        /* Footer */
        .landing-footer {
            padding: 60px;
        }
    }

    /* Large Desktop (1200px and up) */
    @media (min-width: 1200px) {
        .hero-section {
            padding: 160px 80px 140px;
        }

        .hero-headline {
            font-size: 3.5rem;
            max-width: 900px;
        }

        .hero-subtext {
            font-size: 1.4rem;
        }

        .section-title {
            font-size: 2.2rem;
        }

        .formula-text {
            font-size: 1.8rem;
        }

        .final-headline {
            font-size: 2.8rem;
        }
    }

    /* Extra Large Desktop (1400px and up) */
    @media (min-width: 1400px) {
        .hero-decoration-1 {
            width: 500px;
            height: 500px;
            right: 10%;
        }

        .hero-decoration-2 {
            width: 400px;
            height: 400px;
            left: 10%;
        }

        .hero-decoration-3 {
            width: 250px;
            height: 250px;
            left: 25%;
        }
    }

    /* Mobile Small (under 375px) */
    @media (max-width: 374px) {
        .hero-headline {
            font-size: 1.5rem;
        }

        .hero-subtext {
            font-size: 0.9rem;
        }

        .section-title {
            font-size: 1.2rem;
        }

        .formula-text {
            font-size: 1.1rem;
        }

        .formula-text .blank {
            min-width: 70px;
        }

        .example-card {
            padding: 16px;
        }

        .feature-card {
            padding: 20px;
        }

        .final-headline {
            font-size: 1.3rem;
        }

        .final-formula {
            font-size: 1rem;
        }

        .final-formula .blank {
            min-width: 50px;
        }
    }