:root {
    --section-padding: 6rem 2rem;
    --section-padding-mobile: 5rem 1.5rem;
    --card-bg: rgba(255, 255, 255, 0.98);
    --card-bg-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.88) 0%, rgba(248, 250, 252, 0.98) 100%);
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.08), 0 1px 4px rgba(0, 0, 0, 0.04);
    --card-hover-shadow: 0 12px 40px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.08);
    --card-border: 1px solid rgba(226, 232, 240, 0.8);
}

nav.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(42, 67, 101, 0.92) 0%, rgba(26, 35, 50, 0.95) 100%);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(75, 116, 32, 0.25);
    padding: 0.875rem 2rem;
    z-index: 100;
    transform: translateY(0);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.12), 0 1px 4px rgba(0, 0, 0, 0.08);
}

nav.main-nav.scrolled {
    background: linear-gradient(135deg, rgba(42, 67, 101, 0.96) 0%, rgba(26, 35, 50, 0.98) 100%);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.16), 0 2px 8px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(75, 116, 32, 0.35);
}

nav.main-nav .nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

nav.main-nav .nav-links {
    display: flex;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav.main-nav .nav-links a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    background: transparent;
}

nav.main-nav .nav-links a:hover {
    color: #ffffff;
    background: rgba(75, 116, 32, 0.15);
    transform: translateY(-2px);
}

nav.main-nav .nav-links a.active {
    color: #ffffff;
    background: linear-gradient(135deg, rgba(75, 116, 32, 0.25) 0%, rgba(112, 162, 51, 0.2) 100%);
    box-shadow: 0 2px 8px rgba(75, 116, 32, 0.2);
}

nav.main-nav .nav-links a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #70A233, transparent);
    transition: width 0.3s ease;
}

nav.main-nav .nav-links a:hover::before,
nav.main-nav .nav-links a.active::before {
    width: 80%;
}

.mobile-menu-toggle {
    display: none;
    background: rgba(75, 116, 32, 0.15);
    border: 1px solid rgba(75, 116, 32, 0.3);
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle:hover {
    background: rgba(75, 116, 32, 0.25);
    transform: scale(1.05);
}

.content-section {
    min-height: 100vh;
    padding: var(--section-padding);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    /* background: linear-gradient(135deg, #4a5568 0%, #2d3748 50%, #4a5568 100%); */
    z-index: 5;
    scroll-snap-align: start;
    -webkit-scroll-snap-align: start;
    scroll-snap-stop: always;
    border-bottom: 1px solid var(--color-border);
}

.content-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* background: radial-gradient(circle at 20% 30%, rgba(26, 155, 142, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(75, 116, 32, 0.06) 0%, transparent 50%); */
    pointer-events: none;
    z-index: 0;
}

.content-section .section-container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.content-section.visible {
    opacity: 1;
    transform: translateY(0);
}


.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--color-primary-teal);
    background: linear-gradient(135deg, rgba(75, 116, 32, 0.15) 0%, rgba(26, 155, 142, 0.12) 100%);
    padding: 0.625rem 1.25rem;
    border-radius: 24px;
    margin-bottom: 1.25rem;
    border: 1px solid rgba(75, 116, 32, 0.2);
    box-shadow: 0 2px 8px rgba(75, 116, 32, 0.1);
}

.section-title {
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 1.25rem;
    line-height: 1.15;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}

.section-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 300;
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.7;
}

.three-column-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
    margin-top: 3.5rem;
}

.info-card {
    background: var(--card-bg-gradient);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--card-shadow);
    border: var(--card-border);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
    position: relative;
    overflow: hidden;
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary-teal), #70A233);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.info-card:hover::before {
    opacity: 1;
}

.info-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.info-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-hover-shadow);
    border-color: rgba(75, 116, 32, 0.3);
}

.card-header {
    margin-bottom: 2rem;
}

.card-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-primary-teal);
    margin-bottom: 0.75rem;
    opacity: 0.9;
}

.card-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 0.5rem;
    letter-spacing: -0.5px;
}

.card-content {
    color: #4a5568;
    line-height: 1.75;
    font-size: 1.0625rem;
}

.card-content p {
    margin-bottom: 1rem;
}

.card-content p:last-child {
    margin-bottom: 0;
}

.two-column-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3.5rem;
    margin-top: 3.5rem;
}

.comparison-card {
    background: var(--card-bg-gradient);
    border-radius: 20px;
    padding: 3.5rem;
    box-shadow: var(--card-shadow);
    border: var(--card-border);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.comparison-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-hover-shadow);
}

.comparison-card h3 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 2rem;
    letter-spacing: -0.3px;
}

.comparison-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.comparison-card li {
    color: #4a5568;
    line-height: 1.85;
    margin-bottom: 1.25rem;
    padding-left: 2rem;
    position: relative;
}

.comparison-card li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5rem;
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--color-primary-teal), #70A233);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(75, 116, 32, 0.3);
}

.hub-showcase {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3.5rem;
    margin-top: 3.5rem;
}

.hub-card {
    background: var(--card-bg-gradient);
    border-radius: 20px;
    padding: 3.5rem;
    box-shadow: var(--card-shadow);
    border: var(--card-border);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hub-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--card-hover-shadow);
}

.hub-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-primary-teal), #70A233);
    box-shadow: 2px 0 8px rgba(75, 116, 32, 0.2);
}

.hub-card.savegas::before {
    background: linear-gradient(180deg, var(--color-coral), #e07a5f);
    box-shadow: 2px 0 8px rgba(197, 107, 75, 0.2);
}

.hub-card-header {
    margin-bottom: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.hub-logo {
    height: 48px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.1));
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hub-card:hover .hub-logo {
    transform: scale(1.05);
}

.hub-tag {
    display: inline-block;
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 0.625rem 1.25rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.hub-tag.engas {
    background: linear-gradient(135deg, rgba(75, 116, 32, 0.18) 0%, rgba(26, 155, 142, 0.15) 100%);
    color: var(--color-primary-teal);
    border: 1px solid rgba(75, 116, 32, 0.25);
}

.hub-tag.savegas {
    background: linear-gradient(135deg, rgba(197, 107, 75, 0.18) 0%, rgba(224, 122, 95, 0.15) 100%);
    color: var(--color-coral);
    border: 1px solid rgba(197, 107, 75, 0.25);
}

.hub-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 1.5rem;
}

.stats-highlight {
    background: linear-gradient(135deg, rgba(75, 116, 32, 0.12) 0%, rgba(26, 155, 142, 0.1) 100%);
    border-radius: 16px;
    padding: 2.5rem;
    margin-top: 2rem;
    border: 1px solid rgba(75, 116, 32, 0.15);
    box-shadow: 0 4px 12px rgba(75, 116, 32, 0.08);
}

.stat-number {
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--color-primary-teal);
    margin-bottom: 0.75rem;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 4px rgba(75, 116, 32, 0.1);
}

.stat-label {
    font-size: 0.9375rem;
    color: #4a5568;
    font-weight: 500;
    line-height: 1.6;
}

.impact-box {
    background: linear-gradient(135deg, rgba(26, 155, 142, 0.12) 0%, rgba(75, 116, 32, 0.08) 100%);
    border-left: 5px solid var(--color-primary-teal);
    border-radius: 12px;
    padding: 2rem;
    margin-top: 2rem;
    box-shadow: 0 2px 12px rgba(26, 155, 142, 0.1);
}

.impact-box h4 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 1rem;
    letter-spacing: -0.2px;
}

.impact-box p {
    color: #e8e8e8;
    line-height: 1.75;
    margin: 0;
    font-size: 1rem;
}

.impact-box.light p {
    color:  var(--color-text-dark);
    line-height: 1.7;
    margin: 0;
}

.timeline-container {
    max-width: 950px;
    margin: 3.5rem auto 0;
}

.timeline-step {
    display: flex;
    gap: 2.5rem;
    margin-bottom: 3rem;
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-step.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-number {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-primary-teal) 0%, #70A233 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 4px 16px rgba(75, 116, 32, 0.35), 0 2px 8px rgba(0, 0, 0, 0.1);
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.timeline-content {
    flex: 1;
    background: var(--card-bg-gradient);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: var(--card-shadow);
    border: var(--card-border);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-step:hover .timeline-content {
    transform: translateX(4px);
    box-shadow: var(--card-hover-shadow);
}

.timeline-content h4 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 1rem;
    letter-spacing: -0.2px;
}

.timeline-content p {
    color: #4a5568;
    line-height: 1.75;
    margin: 0;
    font-size: 1.0625rem;
}

.cta-section {
    background: linear-gradient(135deg, rgba(75, 116, 32, 0.18) 0%, rgba(26, 155, 142, 0.16) 100%);
    border-radius: 20px;
    padding: 4rem 3rem;
    text-align: center;
    margin-top: 5rem;
    border: 1px solid rgba(75, 116, 32, 0.25);
    box-shadow: 0 8px 24px rgba(75, 116, 32, 0.12), 0 2px 8px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-primary-teal), #70A233, transparent);
}

.cta-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-primary-teal);
    background: linear-gradient(135deg, rgba(75, 116, 32, 0.2) 0%, rgba(26, 155, 142, 0.15) 100%);
    padding: 0.5rem 1.5rem;
    border-radius: 24px;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(75, 116, 32, 0.3);
    box-shadow: 0 2px 8px rgba(75, 116, 32, 0.15);
}

.cta-section h3 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 1.25rem;
    line-height: 1.3;
    letter-spacing: -0.3px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.cta-section p {
    color: rgba(255, 255, 255, 0.88);
    font-size: 1.125rem;
    line-height: 1.7;
}

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary-teal) 0%, #70A233 100%);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 16px rgba(75, 116, 32, 0.3), 0 2px 8px rgba(0, 0, 0, 0.15);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease;
    pointer-events: none;
    z-index: 99;
}

.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.back-to-top:hover {
    transform: translateY(-6px);
    box-shadow: 0 6px 24px rgba(75, 116, 32, 0.4), 0 4px 12px rgba(0, 0, 0, 0.2);
}

@media (max-width: 1024px) {
    .three-column-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .two-column-grid,
    .hub-showcase {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    html {
        scroll-snap-type: none;
    }
    
    .content-section {
        scroll-snap-align: none;
    }
    
    nav.main-nav {
        padding: 0;
        background: transparent;
        border-bottom: none;
        box-shadow: none;
        backdrop-filter: none;
    }
    
    nav.main-nav.scrolled {
        background: transparent;
        box-shadow: none;
    }
    
    nav.main-nav .nav-container {
        justify-content: flex-end;
        padding: 1rem 1.5rem;
    }
    
    nav.main-nav .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, rgba(42, 67, 101, 0.98) 0%, rgba(26, 35, 50, 0.98) 100%);
        backdrop-filter: blur(20px);
        flex-direction: column;
        gap: 0.25rem;
        padding: 1rem;
        padding-top: 4rem;
        transform: translateY(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        border-bottom: 1px solid rgba(75, 116, 32, 0.2);
        max-height: 100vh;
        overflow-y: auto;
    }
    
    nav.main-nav .nav-links.open {
        transform: translateY(0);
    }
    
    nav.main-nav .nav-links a {
        padding: 1rem 1.5rem;
        display: block;
        border-radius: 8px;
        text-align: center;
    }
    
    .mobile-menu-toggle {
        display: block;
        position: relative;
        z-index: 101;
    }
    
    .content-section {
        padding: var(--section-padding-mobile);
        min-height: auto;
    }
    
    .section-header {
        margin-bottom: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .info-card,
    .comparison-card,
    .hub-card {
        padding: 2rem;
    }
    
    .card-title {
        font-size: 1.5rem;
    }
    
    .timeline-step {
        gap: 1rem;
    }
    
    .timeline-number {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .timeline-content {
        padding: 1.5rem;
    }
    
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 1.75rem;
    }
    
    .card-title {
        font-size: 1.25rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}