/* ================================
           CO2 HERO SECTION
        ================================ */
        .co2-hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg,
                    rgba(232, 244, 252, 0.95) 0%,
                    rgba(232, 244, 252, 0.98) 100%),
                url('https://images.unsplash.com/photo-1581094794329-c8112a89af12?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=60');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            padding: 120px 20px 80px;
            overflow: hidden;
        }
        
        .co2-hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 50% 50%,
                    rgba(255, 255, 255, 0.9) 0%,
                    rgba(232, 244, 252, 0.6) 50%,
                    transparent 100%);
            z-index: 1;
        }
        
        .co2-hero-content {
            position: relative;
            z-index: 2;
            max-width: 1200px;
            width: 100%;
        }
        
        .co2-hero-badge {
            display: inline-block;
            background: linear-gradient(135deg, #2ecc71, #27ae60);
            color: white;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 2rem;
            box-shadow: 0 8px 20px rgba(46, 204, 113, 0.3);
        }
        
        .co2-hero-title {
            font-size: 4.2rem;
            font-weight: 900;
            color: var(--deep-navy);
            margin-bottom: 1.5rem;
            line-height: 1.1;
            background: linear-gradient(135deg,
                    #0b3c5d 0%,
                    #27ae60 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 15px rgba(11, 60, 93, 0.1);
        }
        
        .co2-hero-subtitle {
            font-size: 1.4rem;
            color: var(--secondary-grey);
            line-height: 1.7;
            margin-bottom: 3rem;
            max-width: 800px;
        }
        
        .co2-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-top: 3rem;
        }
        
        .co2-feature {
            background: rgba(255, 255, 255, 0.9);
            border-radius: 16px;
            padding: 1.5rem;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.05);
            border: 1px solid rgba(39, 174, 96, 0.1);
            text-align: center;
        }
        
        .co2-feature-icon {
            font-size: 2.5rem;
            color: #27ae60;
            margin-bottom: 1rem;
        }
        
        .co2-feature-text {
            font-size: 1rem;
            color: var(--deep-navy);
            font-weight: 600;
        }
        
        /* ================================
           SYSTEM BENEFITS SECTION
        ================================ */
        .benefits-section {
            padding: 6rem 0;
            background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
        }
        
        .benefit-card {
            background: white;
            border-radius: 20px;
            padding: 2.5rem;
            height: 100%;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            border: 1px solid rgba(39, 174, 96, 0.1);
            transition: all 0.3s ease;
        }
        
        .benefit-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(39, 174, 96, 0.15);
        }
        
        .benefit-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, #2ecc71, #27ae60);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
        }
        
        .benefit-icon i {
            font-size: 1.8rem;
            color: white;
        }
        
        /* ================================
           COMPARISON SECTION
        ================================ */
        /* =========================================
   Comparison Section (Premium + Responsive)
========================================= */

.comparison-section {
    padding: 90px 0;
    background: linear-gradient(135deg, #0b3c5d, #164a6d);
    font-family: "Poppins", sans-serif;
    position: relative;
    overflow: hidden;
}

/* Optional subtle overlay */
.comparison-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top left, rgba(59, 175, 218, 0.15), transparent 55%);
    pointer-events: none;
}

/* Main Card */
.comparison-card {
    position: relative;
    z-index: 2;
    background: rgba(255, 255, 255, 0.97);
    border-radius: 22px;
    padding: 45px 40px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.22);
    border: 1px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Item Row */
.comparison-item {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    padding: 22px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}

.comparison-item:last-child {
    border-bottom: none;
}

/* Icon */
.comparison-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.25rem;
}

/* Icon Colors */
.co2-icon {
    background: rgba(39, 174, 96, 0.12);
    color: #27ae60;
}

.traditional-icon {
    background: rgba(120, 120, 120, 0.12);
    color: #666;
}

/* Text inside each item */
.comparison-item h4 {
    font-size: 1.15rem;
    font-weight: 800;
    color: #0b3c5d;
    margin-bottom: 6px;
}

.comparison-item p {
    margin: 0;
    font-size: 0.98rem;
    line-height: 1.65;
    color: #33475b;
}

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

/* Tablet */
@media (max-width: 992px) {
    .comparison-section {
        padding: 75px 0;
    }

    .comparison-card {
        padding: 38px 28px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .comparison-section {
        padding: 60px 0;
    }

    .comparison-card {
        padding: 30px 20px;
        border-radius: 18px;
    }

    .comparison-item {
        padding: 18px 0;
        gap: 14px;
    }

    .comparison-icon {
        width: 46px;
        height: 46px;
        font-size: 1.1rem;
    }

    .comparison-item h4 {
        font-size: 1.05rem;
    }

    .comparison-item p {
        font-size: 0.95rem;
    }
}

/* Extra Small Phones */
@media (max-width: 480px) {
    .comparison-card {
        padding: 24px 16px;
    }

    .comparison-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .comparison-icon {
        margin-right: 0;
    }

    .comparison-item h4 {
        font-size: 1rem;
    }

    .comparison-item p {
        font-size: 0.92rem;
    }
}

        /* ================================
           CTA SECTION
        ================================ */
        .co2-cta-section {
            padding: 6rem 0;
            background: linear-gradient(135deg, #27ae60, #2ecc71);
            position: relative;
            overflow: hidden;
        }
        
        .co2-cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }
        
        .co2-cta-title {
            font-size: 3rem;
            font-weight: 800;
            color: white;
            margin-bottom: 1.5rem;
        }
        
        .co2-cta-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 3rem;
            line-height: 1.7;
        }
        
        .btn-co2-cta {
            background: white;
            color: #27ae60;
            border: none;
            padding: 1.2rem 3rem;
            border-radius: 12px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 1rem;
            text-decoration: none;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        }
        
        .btn-co2-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
            color: #27ae60;
        }
        
        /* ================================
           RESPONSIVE DESIGN
        ================================ */
        @media (max-width: 1200px) {
            .co2-hero-title {
                font-size: 3.5rem;
            }
        }
        
        @media (max-width: 992px) {
            .co2-hero-section {
                padding: 100px 20px 60px;
                min-height: 70vh;
                background-attachment: scroll;
            }
            
            .co2-hero-title {
                font-size: 2.8rem;
            }
            
            .co2-hero-subtitle {
                font-size: 1.2rem;
            }
            
            .specs-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }
            
            .specs-label,
            .specs-value {
                flex: 0 0 100%;
            }
        }
        
        @media (max-width: 768px) {
            .co2-hero-title {
                font-size: 2.2rem;
            }
            
            .co2-hero-badge {
                font-size: 0.9rem;
                padding: 0.6rem 1.5rem;
            }
            
            .co2-features-grid {
                grid-template-columns: 1fr;
            }
            
            .case-study-stats {
                flex-direction: column;
                gap: 1.5rem;
            }
            
            .co2-cta-title {
                font-size: 2.2rem;
            }
        }
        
        @media (max-width: 576px) {
            .co2-hero-title {
                font-size: 1.8rem;
            }
            
            .co2-cta-title {
                font-size: 1.8rem;
            }
            
            .btn-co2-cta {
                padding: 1rem 2rem;
                font-size: 1rem;
            }
        }

          /* ================= VARIANTS 1 SECTION ================= */
.variants1-section {
    padding: 4rem 1rem;
    background: linear-gradient(135deg, #f8fafc, #ffffff);
    position: relative;
    overflow: hidden;
}

.variants1-section .section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title3 {
    font-size: 1.8rem;
    font-weight: 800;
    color: #0b3c5d;
    margin-bottom: 0.5rem;
}

.section-subtitle3 {
    font-size: 1rem;
    color: #556677;
    line-height: 1.6;
    max-width: 650px;
    margin: 0 auto;
}

/* ================= VARIANTS GRID ================= */
.variants-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

/* ================= VARIANT CARD ================= */
.variant-card {
    background: #ffffff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(11, 60, 93, 0.07);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.variant-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 60px rgba(11, 60, 93, 0.15);
}

/* ================= VARIANT HEADER ================= */
.variant-header {
    position: relative;
    overflow: hidden;
}

.variant-header img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.4s ease;
}

.variant-card:hover .variant-header img {
    transform: scale(1.05);
}

/* Badge */
.variant-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: #3bafda;
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.4rem 0.8rem;
    border-radius: 12px;
    text-transform: uppercase;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* ================= VARIANT BODY ================= */
.variant-body {
    padding: 1.5rem;
}

.variant-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: #0b3c5d;
    margin-bottom: 0.5rem;
}

.variant-desc {
    font-size: 0.9rem;
    color: #556677;
    line-height: 1.6;
}

/* ================= VARIANT FOOTER ================= */
.variant-footer {
    padding: 1rem 1.5rem 1.5rem;
    display: flex;
    justify-content: center;
}

.btn-outline-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.4rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 10px;
    border: 2px solid #3bafda;
    color: #3bafda;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    background: #3bafda;
    color: #fff;
    transform: translateY(-2px);
}

/* ================= FADE-IN ANIMATION ================= */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
    animation-delay: 0.2s;
}

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

/* ================= MEDIA QUERIES ================= */
@media (min-width: 600px) {
    .variants-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }

    .section-title3 {
        font-size: 2rem;
    }

    .section-subtitle3 {
        font-size: 1.05rem;
    }
}

@media (min-width: 992px) {
    .variants-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .section-title3 {
        font-size: 2.3rem;
    }

    .variant-title {
        font-size: 1.3rem;
    }

    .variant-desc {
        font-size: 0.95rem;
    }
}

@media (min-width: 1200px) {
    .variants-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Badge */
.variant-badge1 {
    position: absolute;
    top: 15px;
    left: 15px;
    background: #90EE90;
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.4rem 0.8rem;
    border-radius: 12px;
    text-transform: uppercase;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}