:root {
    --c-primary: #0f3d39;
    --c-gold: #cca43b;
    --c-text: #1e293b;
    --c-text-light: #64748b;
    --c-bg-light: #f8fafc;
    --c-bg-white: #ffffff;
    --font-head: 'Plane', sans-serif;
    --font-body: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --shadow-card: 0 4px 20px rgba(15, 61, 57, 0.06);
    --shadow-hover: 0 12px 40px rgba(15, 61, 57, 0.1);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius: 14px;
    --max-width: 1400px;
}

* { box-sizing: border-box; }

body { 
    background: #fafafa; 
    color: var(--c-text); 
    font-family: var(--font-body); 
    margin: 0;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { 
    font-family: var(--font-head); 
    color: var(--c-primary); 
    margin: 0; 
    line-height: 1.2; 
    font-weight: 400;
}

a { text-decoration: none; transition: all 0.35s ease; }
p { line-height: 1.65; color: var(--c-text-light); font-size: 1rem; margin: 0; }


.decarb-hero {
    position: relative; 
    height: 85vh; 
    min-height: 650px;
    display: flex; 
    align-items: center; 
    justify-content: center;
    overflow: hidden; 
    text-align: center; 
    color: #fff;
    margin-top: -100px; 
    padding-top: 100px;
}

.hero-bg {
    position: absolute; 
    inset: 0; 
    background-size: cover; 
    background-position: center;
    z-index: 0; 
    animation: kenburns 30s ease-in-out infinite alternate;
}

@keyframes kenburns { 
    0% { transform: scale(1) translateX(0); } 
    100% { transform: scale(1.12) translateX(-20px); } 
}

.hero-overlay { 
    position: absolute; 
    inset: 0; 
    background: linear-gradient(135deg, rgba(15,61,57,0.7) 0%, rgba(15,61,57,0.5) 100%);
    z-index: 1; 
}

.hero-content { 
    position: relative; 
    z-index: 3; 
    max-width: 900px; 
    padding: 0 30px; 
}

.hero-label {
    display: inline-block; 
    letter-spacing: 3.5px; 
    font-size: 0.7rem;
    font-weight: 700; 
    margin-bottom: 28px; 
    color: var(--c-gold);
    background: rgba(0,0,0,0.3); 
    padding: 10px 24px; 
    border-radius: 50px;
    backdrop-filter: blur(10px); 
    border: 1px solid rgba(255,255,255,0.15);
    text-transform: uppercase;
}

.hero-title { 
    font-size: 4rem; 
    margin-bottom: 2rem; 
    color: #fff; 
    text-shadow: 0 6px 20px rgba(0,0,0,0.25);
    letter-spacing: -0.02em;
}

.hero-actions { 
    display: flex; 
    gap: 20px; 
    justify-content: center; 
    flex-wrap: wrap; 
    margin-top: 40px;
}

.btn-gold {
    background: var(--c-gold); 
    color: #fff; 
    padding: 16px 38px; 
    border-radius: 50px; 
    font-weight: 600;
    font-size: 0.95rem;
    display: inline-flex; 
    align-items: center; 
    gap: 10px;
    box-shadow: 0 6px 20px rgba(204, 164, 59, 0.35);
}

.btn-gold:hover { 
    transform: translateY(-3px); 
    background: #b89332;
    box-shadow: 0 10px 28px rgba(204, 164, 59, 0.45);
}


.section-engagements { 
    padding: 0 30px 100px; 
    background: transparent;
    position: relative; 
    z-index: 4; 
    margin-top: -50px; 
}

.container { 
    max-width: var(--max-width); 
    margin: 0 auto; 
    position: relative; 
}


.intro-tag {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
}

.tag-badge {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    background: linear-gradient(135deg, rgba(15, 61, 57, 0.03), rgba(204, 164, 59, 0.05));
    padding: 32px 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border: 2px solid rgba(204, 164, 59, 0.2);
    max-width: 900px;
    margin: 0 auto;
}

.tag-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--c-primary), #1a5950);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(15, 61, 57, 0.2);
}

.tag-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--c-gold);
    font-weight: 700;
    margin-bottom: 8px;
}

.tag-text {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--c-primary);
    line-height: 1.5;
    text-align: center;
    font-family: var(--font-head);
}

.tag-text strong {
    color: var(--c-gold);
    font-weight: 600;
}


.engagements-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 24px;
}


.card-biosuper {
    background: white;
    border-radius: var(--radius-xl);
    padding: 50px 45px;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(15, 61, 57, 0.06);
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 50px;
    align-items: center;
    transition: all 0.4s ease;
}

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

.biosuper-content h3 {
    font-size: 2.2rem;
    margin-bottom: 20px;
    color: var(--c-primary);
}

.biosuper-content p {
    line-height: 1.75;
    margin-bottom: 24px;
    color: var(--c-text-light);
    font-size: 1.05rem;
}

.biosuper-visual {
    background: #fafafa;
    border-radius: var(--radius-lg);
    padding: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #f1f5f9;
    min-height: 200px;
}

.biosuper-visual img {
    max-width: 100%;
    height: auto;
    max-height: 160px;
    object-fit: contain;
}


.card-environment {
    background: linear-gradient(135deg, var(--c-primary) 0%, #1a5950 100%);
    border-radius: var(--radius-xl);
    padding: 50px 45px;
    color: white;
    box-shadow: var(--shadow-card);
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 40px;
    align-items: start;
    transition: all 0.4s ease;
    margin-top: 24px;
}

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

.env-icon {
    width: 80px;
    height: 80px;
    background: rgba(255,255,255,0.15);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    backdrop-filter: blur(10px);
    flex-shrink: 0;
}

.env-content h3 {
    font-size: 2rem;
    color: white;
    margin-bottom: 20px;
}

.env-content > p {
    color: rgba(255,255,255,0.95);
    font-size: 1.05rem;
    line-height: 1.75;
    margin-bottom: 32px;
}

.env-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.15);
}

.env-item {
    display: flex;
    gap: 16px;
    align-items: start;
}

.env-item-icon {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.15);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
    backdrop-filter: blur(5px);
}

.env-item-content strong {
    display: block;
    color: var(--c-gold);
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 6px;
}

.env-item-content p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: rgba(255,255,255,0.9);
}


.double-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.card-subsidiary {
    background: white;
    border-radius: var(--radius-xl);
    padding: 45px 40px;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(15, 61, 57, 0.06);
    display: flex;
    flex-direction: column;
    transition: all 0.4s ease;
}

.card-subsidiary:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(15, 61, 57, 0.12);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.card-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.card-header h3 {
    font-size: 1.6rem;
    color: var(--c-primary);
}

.card-subsidiary p {
    line-height: 1.75;
    margin-bottom: 24px;
    font-size: 1.05rem;
    flex-grow: 1;
}

.arg-list {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.arg-list li {
    margin-bottom: 10px;
    padding-left: 22px;
    position: relative;
    font-size: 0.92rem;
    color: var(--c-text-light);
    line-height: 1.5;
}

.arg-list li::before {
    content: '→';
    color: var(--c-gold);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.card-visual {
    margin-top: auto;
    padding-top: 30px;
    border-top: 1px solid #f1f5f9;
    text-align: center;
    min-height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-visual img {
    max-width: 100%;
    max-height: 130px;
    object-fit: contain;
    border-radius: 10px;
}


.btn-link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--c-primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-top: 16px;
    padding-bottom: 2px;
    border-bottom: 2px solid transparent;
}

.btn-link-arrow:hover {
    color: var(--c-gold);
    border-bottom-color: var(--c-gold);
    transform: translateX(3px);
}

.btn-link-light {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--c-gold);
    font-weight: 600;
    font-size: 0.9rem;
    padding-bottom: 2px;
    border-bottom: 2px solid rgba(204, 164, 59, 0.3);
}

.btn-link-light:hover {
    color: white;
    border-bottom-color: white;
    transform: translateX(3px);
}


.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}


@media (max-width: 1200px) {
    .card-biosuper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .biosuper-visual {
        max-width: 350px;
        margin: 0 auto;
    }
}

@media (max-width: 900px) {
    .hero-title { font-size: 2.8rem; }
    
    .double-cards {
        grid-template-columns: 1fr;
    }
    
    .card-biosuper {
        padding: 40px 32px;
    }
    
    .card-subsidiary {
        padding: 35px 28px;
    }
    
    .card-environment {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 40px 32px;
    }
    
    .env-icon {
        margin: 0 auto;
    }
    
    .env-content h3 {
        text-align: center;
    }
    
    .env-details {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .hero-title { font-size: 2.2rem; }
    .section-engagements { padding: 0 20px 60px; }
    
    .tag-badge {
        padding: 24px 28px;
    }
    
    .tag-text {
        font-size: 1.05rem;
    }
    
    .card-biosuper,
    .card-environment,
    .card-subsidiary {
        padding: 32px 24px;
    }
    
    .biosuper-content h3 { font-size: 1.8rem; }
    .card-header h3 { font-size: 1.4rem; }
    .env-content h3 { font-size: 1.6rem; }
}