/* ========= VARIABLES (paleta coherente con ecoclock.org) ========= */                                                                                                                                           
  :root {                                                                                                                                                                                                           
    --bg: #0a0f0d;                                                                                                                                                                                                  
    --bg-2: #0d1410;                                                                                                                                                                                                
    --surface: #162019;                                                                                                                                                                                             
    --surface-2: #1c2b22;                                                                                                                                                                                           
    --border: rgba(100, 200, 130, 0.15);                                                                                                                                                                            
    --text: #d4ede0;                                                                                                                                                                                                
    --text-muted: #7aaa90;                                                                                                                                                                                          
    --accent: #3ddc84;                                                                                                                                                                                              
    --accent-2: #ff6b35;                                                                                                                                                                                            
    --accent-3: #06aed5;                                                                                                                                                                                            
    --font-display: 'Space Grotesk', sans-serif;                                                                                                                                                                    
    --font-body: 'Inter', sans-serif;                                                                                                                                                                               
    --radius: 12px;                                                                                                                                                                                                 
    --transition: 0.3s ease;                                                                                                                                                                                        
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  * {                                                                                                                                                                                                               
    box-sizing: border-box;                                                                                                                                                                                         
    margin: 0;                                                                                                                                                                                                      
    padding: 0;                                                                                                                                                                                                     
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  html {                                                                                                                                                                                                            
    scroll-behavior: smooth;                                                                                                                                                                                        
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  body {                                                                                                                                                                                                            
    background: var(--bg);                                                                                                                                                                                          
    color: var(--text);                                                                                                                                                                                             
    font-family: var(--font-body);                                                                                                                                                                                  
    font-size: 16px;                                                                                                                                                                                                
    line-height: 1.6;                                                                                                                                                                                               
    -webkit-font-smoothing: antialiased;                                                                                                                                                                            
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  ::selection {                                                                                                                                                                                                     
    background: var(--accent);                                                                                                                                                                                      
    color: var(--bg);                                                                                                                                                                                               
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  a {                                                                                                                                                                                                               
    color: var(--accent);                                                                                                                                                                                           
    text-decoration: none;                                                                                                                                                                                          
    transition: opacity 0.2s;                                                                                                                                                                                       
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  a:hover {                                                                                                                                                                                                         
    opacity: 0.8;                                                                                                                                                                                                   
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .container {                                                                                                                                                                                                      
    max-width: 1100px;                                                                                                                                                                                              
    margin: 0 auto;                                                                                                                                                                                                 
    padding: 0 24px;                                                                                                                                                                                                
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  /* ========= HEADER ========= */                                                                                                                                                                                  
  .site-header {                                                                                                                                                                                                    
    position: sticky;                                                                                                                                                                                               
    top: 0;                                                                                                                                                                                                         
    z-index: 100;                                                                                                                                                                                                   
    background: rgba(10, 15, 13, 0.85);                                                                                                                                                                             
    backdrop-filter: blur(12px) saturate(180%);                                                                                                                                                                     
    border-bottom: 1px solid var(--border);                                                                                                                                                                         
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .header-inner {                                                                                                                                                                                                   
    display: flex;                                                                                                                                                                                                  
    align-items: center;                                                                                                                                                                                            
    justify-content: space-between;                                                                                                                                                                                 
    padding: 14px 24px;                                                                                                                                                                                             
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .logo {                                                                                                                                                                                                           
    display: flex;                                                                                                                                                                                                  
    align-items: center;                                                                                                                                                                                            
    gap: 10px;                                                                                                                                                                                                      
    font-family: var(--font-display);                                                                                                                                                                               
    font-weight: 700;                                                                                                                                                                                               
    font-size: 1.1rem;                                                                                                                                                                                              
    color: var(--text);                                                                                                                                                                                             
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .logo-text-accent {                                                                                                                                                                                               
    color: var(--accent);                                                                                                                                                                                           
    margin-left: 2px;                                                                                                                                                                                               
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .header-nav {                                                                                                                                                                                                     
    display: flex;                                                                                                                                                                                                  
    gap: 24px;                                                                                                                                                                                                      
    align-items: center;                                                                                                                                                                                            
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .header-nav a {                                                                                                                                                                                                   
    color: var(--text-muted);                                                                                                                                                                                       
    font-size: 0.92rem;                                                                                                                                                                                             
    font-weight: 400;                                                                                                                                                                                               
    transition: color 0.2s;                                                                                                                                                                                         
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .header-nav a:hover {                                                                                                                                                                                             
    color: var(--accent);                                                                                                                                                                                           
    opacity: 1;                                                                                                                                                                                                     
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  @media (max-width: 600px) {                                                                                                                                                                                       
    .header-nav {                                                                                                                                                                                                   
      gap: 14px;                                                                                                                                                                                                    
    }                                                                                                                                                                                                               
    .header-nav a {                                                                                                                                                                                                 
      font-size: 0.82rem;                                                                                                                                                                                           
    }                                                                                                                                                                                                               
    .header-nav a:last-child {                                                                                                                                                                                      
      display: none;                                                                                                                                                                                                
    }                                                                                                                                                                                                               
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  /* ========= HERO ========= */                                                                                                                                                                                    
  .hero {                                                                                                                                                                                                           
    padding: 100px 0 80px;                                                                                                                                                                                          
    text-align: center;                                                                                                                                                                                             
    background: radial-gradient(ellipse at top, rgba(61, 220, 132, 0.08) 0%, transparent 60%);                                                                                                                      
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .hero-eyebrow {                                                                                                                                                                                                   
    font-family: var(--font-display);                                                                                                                                                                               
    font-size: 0.78rem;                                                                                                                                                                                             
    font-weight: 500;                                                                                                                                                                                               
    letter-spacing: 0.2em;                                                                                                                                                                                          
    color: var(--accent);                                                                                                                                                                                           
    text-transform: uppercase;                                                                                                                                                                                      
    margin-bottom: 18px;                                                                                                                                                                                            
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .hero-title {                                                                                                                                                                                                     
    font-family: var(--font-display);                                                                                                                                                                               
    font-weight: 700;                                                                                                                                                                                               
    font-size: clamp(2rem, 5vw, 3.4rem);                                                                                                                                                                            
    line-height: 1.1;                                                                                                                                                                                               
    letter-spacing: -0.03em;                                                                                                                                                                                        
    color: var(--text);                                                                                                                                                                                             
    max-width: 780px;                                                                                                                                                                                               
    margin: 0 auto 22px;                                                                                                                                                                                            
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .hero-subtitle {                                                                                                                                                                                                  
    font-size: 1.08rem;                                                                                                                                                                                             
    color: var(--text-muted);                                                                                                                                                                                       
    max-width: 620px;                                                                                                                                                                                               
    margin: 0 auto 36px;                                                                                                                                                                                            
    line-height: 1.7;                                                                                                                                                                                               
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .hero-cta {                                                                                                                                                                                                       
    display: flex;                                                                                                                                                                                                  
    gap: 14px;                                                                                                                                                                                                      
    justify-content: center;                                                                                                                                                                                        
    flex-wrap: wrap;                                                                                                                                                                                                
    margin-bottom: 24px;                                                                                                                                                                                            
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .hero-meta {                                                                                                                                                                                                      
    font-size: 0.82rem;                                                                                                                                                                                             
    color: var(--text-muted);                                                                                                                                                                                       
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  /* ========= BUTTONS ========= */                                                                                                                                                                                 
  .btn {                                                                                                                                                                                                            
    display: inline-block;                                                                                                                                                                                          
    font-family: var(--font-display);                                                                                                                                                                               
    font-weight: 600;                                                                                                                                                                                               
    font-size: 0.95rem;                                                                                                                                                                                             
    padding: 13px 26px;                                                                                                                                                                                             
    border-radius: 10px;                                                                                                                                                                                            
    cursor: pointer;                                                                                                                                                                                                
    transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;                                                                                                                                                      
    border: none;                                                                                                                                                                                                   
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .btn-primary {                                                                                                                                                                                                    
    background: var(--accent);                                                                                                                                                                                      
    color: var(--bg);                                                                                                                                                                                               
    box-shadow: 0 0 24px rgba(61, 220, 132, 0.25);                                                                                                                                                                  
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .btn-primary:hover {                                                                                                                                                                                              
    transform: translateY(-2px);                                                                                                                                                                                    
    box-shadow: 0 4px 32px rgba(61, 220, 132, 0.35);                                                                                                                                                                
    opacity: 1;                                                                                                                                                                                                     
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .btn-secondary {                                                                                                                                                                                                  
    background: rgba(255, 255, 255, 0.08);                                                                                                                                                                          
    color: var(--text);                                                                                                                                                                                             
    border: 1px solid rgba(255, 255, 255, 0.2);                                                                                                                                                                     
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .btn-secondary:hover {                                                                                                                                                                                            
    background: rgba(61, 220, 132, 0.12);                                                                                                                                                                           
    border-color: var(--accent);                                                                                                                                                                                    
    opacity: 1;                                                                                                                                                                                                     
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  /* ========= HOW IT WORKS ========= */                                                                                                                                                                            
  .how {                                                                                                                                                                                                            
    padding: 80px 0;                                                                                                                                                                                                
    background: var(--bg-2);                                                                                                                                                                                        
    border-top: 1px solid var(--border);                                                                                                                                                                            
    border-bottom: 1px solid var(--border);                                                                                                                                                                         
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .section-title {                                                                                                                                                                                                  
    font-family: var(--font-display);                                                                                                                                                                               
    font-weight: 700;                                                                                                                                                                                               
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);                                                                                                                                                                        
    letter-spacing: -0.02em;                                                                                                                                                                                        
    text-align: center;                                                                                                                                                                                             
    margin-bottom: 12px;                                                                                                                                                                                            
    color: var(--text);                                                                                                                                                                                             
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .section-subtitle {                                                                                                                                                                                               
    text-align: center;                                                                                                                                                                                             
    color: var(--text-muted);                                                                                                                                                                                       
    margin-bottom: 56px;                                                                                                                                                                                            
    font-size: 1.02rem;                                                                                                                                                                                             
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .steps {                                                                                                                                                                                                          
    display: grid;                                                                                                                                                                                                  
    grid-template-columns: repeat(3, 1fr);                                                                                                                                                                          
    gap: 24px;                                                                                                                                                                                                      
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  @media (max-width: 800px) {                                                                                                                                                                                       
    .steps {                                                                                                                                                                                                        
      grid-template-columns: 1fr;                                                                                                                                                                                   
    }                                                                                                                                                                                                               
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .step {                                                                                                                                                                                                           
    background: var(--surface);                                                                                                                                                                                     
    border: 1px solid var(--border);                                                                                                                                                                                
    border-radius: var(--radius);                                                                                                                                                                                   
    padding: 30px 24px;                                                                                                                                                                                             
    transition: border-color 0.3s, transform 0.3s;                                                                                                                                                                  
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .step:hover {                                                                                                                                                                                                     
    border-color: var(--accent);                                                                                                                                                                                    
    transform: translateY(-3px);                                                                                                                                                                                    
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .step-num {                                                                                                                                                                                                       
    display: inline-flex;                                                                                                                                                                                           
    align-items: center;                                                                                                                                                                                            
    justify-content: center;                                                                                                                                                                                        
    width: 36px;                                                                                                                                                                                                    
    height: 36px;                                                                                                                                                                                                   
    background: var(--accent);                                                                                                                                                                                      
    color: var(--bg);                                                                                                                                                                                               
    font-family: var(--font-display);                                                                                                                                                                               
    font-weight: 700;                                                                                                                                                                                               
    font-size: 1.1rem;                                                                                                                                                                                              
    border-radius: 50%;                                                                                                                                                                                             
    margin-bottom: 18px;                                                                                                                                                                                            
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .step h3 {                                                                                                                                                                                                        
    font-family: var(--font-display);                                                                                                                                                                               
    font-weight: 600;                                                                                                                                                                                               
    font-size: 1.15rem;                                                                                                                                                                                             
    margin-bottom: 10px;                                                                                                                                                                                            
    color: var(--text);                                                                                                                                                                                             
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .step p {                                                                                                                                                                                                         
    color: var(--text-muted);                                                                                                                                                                                       
    font-size: 0.95rem;                                                                                                                                                                                             
    line-height: 1.6;                                                                                                                                                                                               
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  /* ========= BETA SECTION ========= */                                                                                                                                                                            
  .beta {                                                                                                                                                                                                           
    padding: 80px 0;                                                                                                                                                                                                
    background: var(--bg);                                                                                                                                                                                          
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .beta-inner {                                                                                                                                                                                                     
    max-width: 720px;                                                                                                                                                                                               
    margin: 0 auto;                                                                                                                                                                                                 
    text-align: center;                                                                                                                                                                                             
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .beta p {                                                                                                                                                                                                         
    color: var(--text-muted);                                                                                                                                                                                       
    font-size: 1.05rem;                                                                                                                                                                                             
    line-height: 1.7;                                                                                                                                                                                               
    margin-bottom: 32px;                                                                                                                                                                                            
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .beta-cta {                                                                                                                                                                                                       
    display: flex;                                                                                                                                                                                                  
    gap: 14px;                                                                                                                                                                                                      
    justify-content: center;                                                                                                                                                                                        
    flex-wrap: wrap;                                                                                                                                                                                                
    margin-bottom: 24px;                                                                                                                                                                                            
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .beta-meta {                                                                                                                                                                                                      
    font-size: 0.85rem;                                                                                                                                                                                             
    color: var(--text-muted);                                                                                                                                                                                       
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  /* ========= FOOTER ========= */                                                                                                                                                                                  
  .site-footer {                                                                                                                                                                                                    
    background: var(--bg-2);                                                                                                                                                                                        
    border-top: 1px solid var(--border);                                                                                                                                                                            
    padding: 50px 0 24px;                                                                                                                                                                                           
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .footer-inner {                                                                                                                                                                                                   
    display: grid;                                                                                                                                                                                                  
    grid-template-columns: 2fr 1fr 1fr;                                                                                                                                                                             
    gap: 40px;                                                                                                                                                                                                      
    margin-bottom: 36px;                                                                                                                                                                                            
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  @media (max-width: 700px) {                                                                                                                                                                                       
    .footer-inner {                                                                                                                                                                                                 
      grid-template-columns: 1fr;                                                                                                                                                                                   
      gap: 28px;                                                                                                                                                                                                    
    }                                                                                                                                                                                                               
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .footer-brand {                                                                                                                                                                                                   
    font-family: var(--font-display);                                                                                                                                                                               
    font-weight: 700;                                                                                                                                                                                               
    font-size: 1.05rem;                                                                                                                                                                                             
    color: var(--accent);                                                                                                                                                                                           
    margin-bottom: 10px;                                                                                                                                                                                            
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .footer-text {                                                                                                                                                                                                    
    color: var(--text-muted);                                                                                                                                                                                       
    font-size: 0.88rem;                                                                                                                                                                                             
    line-height: 1.6;                                                                                                                                                                                               
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .footer-col-title {                                                                                                                                                                                               
    font-family: var(--font-display);                                                                                                                                                                               
    font-weight: 600;                                                                                                                                                                                               
    font-size: 0.85rem;                                                                                                                                                                                             
    margin-bottom: 12px;                                                                                                                                                                                            
    color: var(--text);                                                                                                                                                                                             
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .site-footer ul {                                                                                                                                                                                                 
    list-style: none;                                                                                                                                                                                               
    display: flex;                                                                                                                                                                                                  
    flex-direction: column;                                                                                                                                                                                         
    gap: 8px;                                                                                                                                                                                                       
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .site-footer ul a {                                                                                                                                                                                               
    color: var(--text-muted);                                                                                                                                                                                       
    font-size: 0.85rem;                                                                                                                                                                                             
    transition: color 0.2s;                                                                                                                                                                                         
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .site-footer ul a:hover {                                                                                                                                                                                         
    color: var(--accent);                                                                                                                                                                                           
    opacity: 1;                                                                                                                                                                                                     
  }                                                                                                                                                                                                                 
                                                                                                                                                                                                                    
  .footer-bottom {                                                                                                                                                                                                  
    border-top: 1px solid var(--border);                                                                                                                                                                            
    padding-top: 22px;                                                                                                                                                                                              
    display: flex;                                                                                                                                                                                                  
    justify-content: space-between;                                                                                                                                                                                 
    flex-wrap: wrap;                                                                                                                                                                                                
    gap: 10px;                                                                                                                                                                                                      
    font-size: 0.78rem;                                                                                                                                                                                             
    color: var(--text-muted);                                                                                                                                                                                       
    font-family: 'Space Grotesk', monospace;                                                                                                                                                                        
  }