/* ============================================================
       DESIGN TOKENS
    ============================================================ */
    :root {
      /* Brand colors derived from CLIMAT logo */
      /* ---- Sistema cromático CLIMAT (leído del logo oficial) ----
         Negro "CLIM" · Rojo "A" · Azul petróleo bloque "T" */
      --climat-primary:        #01426A;
      --climat-primary-dark:   #01304C;
      --climat-primary-light:  #346888;
      --climat-primary-soft:   rgba(1,66,106,0.10);
      --climat-primary-border: rgba(1,66,106,0.22);
      --climat-secondary:      #ED1B24;
      --climat-secondary-dark: #C5161E;
      --climat-accent:         #ED1B24;
      --climat-ink:            #000000;
      --climat-background:     #ffffff;
      --climat-surface:        #f6f8fa;
      --climat-text:           #0A0A0A;
      --climat-text-muted:     #5A6672;
      --climat-border:         #e2e8ed;

      /* Alias legacy → tokens CLIMAT */
      --blue:       var(--climat-primary);
      --blue-dk:    var(--climat-primary-dark);
      --blue-lt:    var(--climat-primary-light);
      --red:        var(--climat-secondary);
      --red-dk:     var(--climat-secondary-dark);
      --navy:       #012840;
      --navy-mid:   #01426A;
      --ice:        #f5f7fa;
      --white:      #ffffff;

      /* Neutrals */
      --gray0:      #f9f9fb;
      --gray1:      #f2f2f7;
      --gray2:      #e5e5ea;
      --gray3:      #c7c7cc;
      --gray4:      #8e8e93;
      --gray5:      #3a3a3c;
      --gray6:      #1c1c1e;

      /* Typography */
      --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      --font-display: 'Plus Jakarta Sans', 'Inter', sans-serif;

      /* Sizes */
      --radius:     12px;
      --radius-lg:  20px;
      --radius-xl:  28px;

      /* Spacing scale */
      --s1: 8px; --s2: 16px; --s3: 24px; --s4: 32px;
      --s5: 48px; --s6: 64px; --s7: 96px; --s8: 128px;

      /* Transitions */
      --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
      --ease-out: cubic-bezier(0.0, 0.0, 0.2, 1);
      --dur: 0.6s;
    }

    /* ============================================================
       RESET & BASE
    ============================================================ */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      font-family: var(--font-sans);
      background: var(--white);
      color: var(--gray6);
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    img, video { max-width: 100%; display: block; }
    a { text-decoration: none; color: inherit; }
    button { cursor: pointer; border: none; background: none; font-family: inherit; }

    /* Reduced motion */
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
      }
    }

    /* ============================================================
       UTILITIES
    ============================================================ */
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 var(--s3);
    }
    .sr-only {
      position: absolute; width: 1px; height: 1px;
      padding: 0; margin: -1px; overflow: hidden;
      clip: rect(0,0,0,0); border: 0;
    }

    /* Reveal animation classes */
    .reveal {
      opacity: 0;
      transform: translateY(40px);
      transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }
    .reveal-left {
      opacity: 0;
      transform: translateX(-40px);
      transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
    }
    .reveal-left.visible { opacity: 1; transform: translateX(0); }
    .reveal-right {
      opacity: 0;
      transform: translateX(40px);
      transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
    }
    .reveal-right.visible { opacity: 1; transform: translateX(0); }
    .reveal-scale {
      opacity: 0;
      transform: scale(0.92);
      transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
    }
    .reveal-scale.visible { opacity: 1; transform: scale(1); }

    /* Stagger delays */
    .stagger-1 { transition-delay: 0.1s; }
    .stagger-2 { transition-delay: 0.2s; }
    .stagger-3 { transition-delay: 0.3s; }
    .stagger-4 { transition-delay: 0.4s; }
    .stagger-5 { transition-delay: 0.5s; }

    /* ============================================================
       NAV
    ============================================================ */
    #nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 1000;
      padding: 0 var(--s3);
      height: 64px;
      display: flex;
      align-items: center;
      transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
    }
    #nav.scrolled {
      background: rgba(255,255,255,0.88);
      backdrop-filter: saturate(180%) blur(20px);
      -webkit-backdrop-filter: saturate(180%) blur(20px);
      box-shadow: 0 1px 0 rgba(0,0,0,0.08);
    }
    .nav-inner {
      max-width: 1200px;
      width: 100%;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .nav-logo {
      font-family: var(--font-display);
      font-weight: 800;
      font-size: 22px;
      color: var(--navy);
      letter-spacing: -0.5px;
    }
    .nav-logo span { color: var(--blue); }
    .nav-links {
      display: flex;
      align-items: center;
      gap: var(--s4);
      list-style: none;
    }
    .nav-links a {
      font-size: 14px;
      font-weight: 500;
      color: var(--gray5);
      transition: color 0.2s;
    }
    .nav-links a:hover { color: var(--navy); }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: var(--s2);
    }
    .btn-nav {
      padding: 9px 20px;
      border-radius: 100px;
      font-size: 14px;
      font-weight: 600;
      background: var(--blue);
      color: var(--white);
      transition: background 0.2s, transform 0.15s;
    }
    .btn-nav:hover { background: var(--blue-dk); transform: translateY(-1px); }
    .btn-nav:focus-visible { outline: 3px solid var(--blue-lt); outline-offset: 2px; }

    /* Hamburger */
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      padding: 8px;
      border-radius: var(--radius);
    }
    .hamburger span {
      display: block; width: 22px; height: 2px;
      background: var(--navy);
      border-radius: 2px;
      transition: transform 0.3s, opacity 0.3s;
    }
    .hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .hamburger.open span:nth-child(2) { opacity: 0; }
    .hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    /* Mobile nav */
    .nav-mobile {
      display: none;
      position: fixed;
      top: 64px; left: 0; right: 0;
      background: rgba(255,255,255,0.96);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      padding: var(--s3);
      border-bottom: 1px solid var(--gray2);
      z-index: 999;
      flex-direction: column;
      gap: var(--s2);
    }
    .nav-mobile.open { display: flex; }
    .nav-mobile a {
      font-size: 16px;
      font-weight: 500;
      color: var(--gray5);
      padding: var(--s2) 0;
      border-bottom: 1px solid var(--gray1);
    }
    .nav-mobile .btn-nav { text-align: center; margin-top: var(--s2); }

    @media (max-width: 768px) {
      .nav-links, .nav-cta { display: none; }
      .hamburger { display: flex; }
    }

    /* ============================================================
       HERO
    ============================================================ */
    #hero {
      position: relative;
      min-height: 100vh;
      display: flex;
      align-items: center;
      background: var(--navy);
      overflow: hidden;
      padding-top: 64px;
    }
    .hero-bg {
      position: absolute;
      inset: 0;
      background:
        radial-gradient(ellipse 80% 60% at 60% 40%, rgba(1,66,106,0.25) 0%, transparent 60%),
        radial-gradient(ellipse 50% 50% at 10% 80%, rgba(1,66,106,0.12) 0%, transparent 50%);
    }
    /* Grid overlay */
    .hero-grid {
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
      background-size: 60px 60px;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 1200px;
      margin: 0 auto;
      padding: var(--s8) var(--s3) var(--s7);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--s6);
      align-items: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(1,66,106,0.15);
      border: 1px solid rgba(1,66,106,0.3);
      border-radius: 100px;
      padding: 6px 14px;
      font-size: 12px;
      font-weight: 600;
      color: var(--blue-lt);
      letter-spacing: 0.5px;
      text-transform: uppercase;
      margin-bottom: var(--s3);
    }
    .hero-badge::before {
      content: '';
      width: 6px; height: 6px;
      border-radius: 50%;
      background: var(--blue-lt);
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(1.5); }
    }
    .hero-title {
      font-family: var(--font-display);
      font-size: clamp(40px, 5vw, 72px);
      font-weight: 800;
      line-height: 1.05;
      letter-spacing: -2px;
      color: var(--white);
      margin-bottom: var(--s3);
    }
    /* --- Figura HVAC --- */
    .hvac-figure{margin:var(--s5) 0 0;border-radius:var(--radius-xl);overflow:hidden;border:1px solid rgba(255,255,255,.12);}
    .hvac-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;object-position:65% 50%;display:block;}

    /* --- Figura enfriador --- */
    .cooler-figure{margin:var(--s5) 0 0;border-radius:var(--radius-xl);overflow:hidden;background:var(--climat-surface);border:1px solid var(--climat-border);}
    .cooler-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;display:block;}

    /* --- Aplicaciones / industrias --- */
    #aplicaciones{padding:var(--s8) 0;background:var(--climat-surface);}
    .apps-inner{max-width:1200px;margin:0 auto;padding:0 var(--s3);}
    .apps-header{max-width:680px;margin-bottom:var(--s7);}
    .apps-layout{display:grid;grid-template-columns:1.15fr 1fr;gap:var(--s6);align-items:center;}
    .apps-figure{position:relative;margin:0;border-radius:var(--radius-xl);overflow:hidden;box-shadow:0 24px 70px rgba(1,40,64,.18);}
    .apps-figure img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;display:block;}
    .apps-figure figcaption{
      position:absolute;left:0;right:0;bottom:0;padding:56px 28px 22px;
      font-family:var(--font-display);font-size:17px;font-weight:700;color:#fff;
      background:linear-gradient(to top,rgba(1,40,64,.92) 0%,rgba(1,40,64,.55) 55%,transparent 100%);
    }
    .apps-list{list-style:none;display:flex;flex-direction:column;gap:2px;padding:0;margin:0;}
    .apps-list li{
      display:flex;align-items:center;gap:14px;
      font-family:var(--font-display);font-size:clamp(17px,2vw,22px);font-weight:700;
      color:var(--climat-text);letter-spacing:-.3px;
      padding:16px 0;border-bottom:1px solid var(--climat-border);
    }
    .apps-list li:last-child{border-bottom:none;}
    .app-dot{width:8px;height:8px;border-radius:50%;background:var(--climat-primary);flex-shrink:0;}
    .apps-list li.is-featured{color:var(--climat-primary);}
    .apps-list li.is-featured .app-dot{background:var(--climat-secondary);box-shadow:0 0 0 5px rgba(237,27,36,.14);}
    @media(max-width:900px){
      .apps-layout{grid-template-columns:1fr;gap:var(--s5);}
      .apps-figure img{aspect-ratio:16/10;}
    }

    /* --- Hero fotográfico --- */
    .hero-photo{position:absolute;inset:0;z-index:0;}
    .hero-photo img{width:100%;height:100%;object-fit:cover;object-position:72% 50%;}
    .hero-overlay{
      position:absolute;inset:0;z-index:1;
      background:
        linear-gradient(100deg,
          rgba(1,40,64,0.95) 0%,
          rgba(1,40,64,0.86) 32%,
          rgba(1,40,64,0.55) 56%,
          rgba(1,40,64,0.28) 78%,
          rgba(1,40,64,0.18) 100%),
        linear-gradient(to top, rgba(1,40,64,0.75) 0%, transparent 45%);
    }
    #hero .hero-content{position:relative;z-index:2;}
    #hero .hero-grid{z-index:1;}
    @media(max-width:768px){
      /* Crop propio de mobile: mantiene visible el equipo HVAC */
      .hero-photo img{object-position:78% 42%;}
      .hero-overlay{
        background:
          linear-gradient(180deg,
            rgba(1,40,64,0.62) 0%,
            rgba(1,40,64,0.80) 42%,
            rgba(1,40,64,0.94) 100%);
      }
    }
    .hero-title .gradient-text {
      background: linear-gradient(115deg, #4FA9D4 0%, #2E8FC0 38%, #ED1B24 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .hero-sub {
      font-size: clamp(16px, 2vw, 20px);
      color: rgba(255,255,255,0.65);
      line-height: 1.6;
      max-width: 520px;
      margin-bottom: var(--s5);
    }
    .hero-actions {
      display: flex;
      gap: var(--s2);
      flex-wrap: wrap;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 28px;
      border-radius: 100px;
      font-size: 15px;
      font-weight: 600;
      background: var(--blue);
      color: var(--white);
      transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
      box-shadow: 0 4px 20px rgba(1,66,106,0.4);
    }
    .btn-primary:hover {
      background: var(--blue-dk);
      transform: translateY(-2px);
      box-shadow: 0 8px 30px rgba(1,66,106,0.5);
    }
    .btn-primary:focus-visible { outline: 3px solid var(--blue-lt); outline-offset: 3px; }
    .btn-ghost {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 28px;
      border-radius: 100px;
      font-size: 15px;
      font-weight: 600;
      color: rgba(255,255,255,0.85);
      border: 1px solid rgba(255,255,255,0.2);
      transition: border-color 0.2s, color 0.2s, background 0.2s;
    }
    .btn-ghost:hover {
      border-color: rgba(255,255,255,0.5);
      color: var(--white);
      background: rgba(255,255,255,0.06);
    }
    .hero-stats {
      display: flex;
      gap: var(--s4);
      margin-top: var(--s5);
      padding-top: var(--s4);
      border-top: 1px solid rgba(255,255,255,0.1);
    }
    .hero-stat { }
    .hero-stat-num {
      font-family: var(--font-display);
      font-size: 28px;
      font-weight: 800;
      color: var(--white);
      letter-spacing: -1px;
    }
    .hero-stat-label {
      font-size: 12px;
      color: rgba(255,255,255,0.5);
      margin-top: 2px;
    }

    /* Hero right panel — abstract visual */
    .hero-visual {
      position: relative;
      display: flex;
      justify-content: center;
      align-items: center;
    }
    .hero-card-stack {
      position: relative;
      width: 100%;
      max-width: 460px;
    }
    .hero-card {
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius-xl);
      padding: var(--s4);
      backdrop-filter: blur(20px);
    }
    .hero-card-bg {
      position: absolute;
      width: 90%;
      bottom: -16px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(1,66,106,0.15);
      border: 1px solid rgba(1,66,106,0.2);
      border-radius: var(--radius-xl);
      height: 100%;
      z-index: -1;
    }
    .hero-card-label {
      font-size: 11px;
      font-weight: 600;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--blue-lt);
      margin-bottom: var(--s2);
    }
    .hero-card-title {
      font-family: var(--font-display);
      font-size: 22px;
      font-weight: 700;
      color: var(--white);
      margin-bottom: var(--s3);
    }
    .hero-services-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: var(--s2);
    }
    .hero-services-list li {
      display: flex;
      align-items: center;
      gap: var(--s2);
      font-size: 14px;
      color: rgba(255,255,255,0.75);
      padding: 12px var(--s2);
      border-radius: var(--radius);
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.06);
      transition: background 0.2s, border-color 0.2s;
    }
    .hero-services-list li:hover {
      background: rgba(1,66,106,0.12);
      border-color: rgba(1,66,106,0.25);
    }
    .service-icon {
      width: 36px; height: 36px;
      border-radius: 10px;
      background: rgba(1,66,106,0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      flex-shrink: 0;
    }

    @media (max-width: 900px) {
      .hero-content { grid-template-columns: 1fr; }
      .hero-visual { display: none; }
    }

    /* ============================================================
       LOGOS MARQUEE
    ============================================================ */
    #logos {
      background: var(--white);
      padding: var(--s5) 0;
      border-bottom: 1px solid var(--gray1);
      overflow: hidden;
    }
    .logos-label {
      text-align: center;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--gray4);
      margin-bottom: var(--s4);
    }
    .logos-track-wrapper {
      overflow: hidden;
      mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
      -webkit-mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
    }
    .logos-track {
      display: flex;
      gap: var(--s6);
      align-items: center;
      animation: marquee 30s linear infinite;
      width: max-content;
    }
    .logos-track:hover { animation-play-state: paused; }
    @keyframes marquee {
      from { transform: translateX(0); }
      to { transform: translateX(-50%); }
    }
    .logo-item {
      font-family: var(--font-display);
      font-size: 15px;
      font-weight: 700;
      color: var(--gray3);
      white-space: nowrap;
      letter-spacing: 0.5px;
      transition: color 0.2s;
    }
    .logo-item:hover { color: var(--navy); }

    /* ============================================================
       POSITIONING STATEMENT
    ============================================================ */
    #statement {
      padding: var(--s8) 0;
      background: var(--white);
    }
    .statement-inner {
      max-width: 900px;
      margin: 0 auto;
      text-align: center;
      padding: 0 var(--s3);
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--blue);
      margin-bottom: var(--s3);
    }
    .statement-headline {
      font-family: var(--font-display);
      font-size: clamp(32px, 4vw, 56px);
      font-weight: 800;
      line-height: 1.1;
      letter-spacing: -1.5px;
      color: var(--navy);
      margin-bottom: var(--s4);
    }
    .statement-body {
      font-size: 18px;
      color: var(--gray4);
      line-height: 1.7;
      max-width: 680px;
      margin: 0 auto;
    }

    /* ============================================================
       SERVICES STICKY SCROLL
    ============================================================ */
    #services {
      background: var(--gray0);
      padding: var(--s8) 0;
    }
    .services-header {
      text-align: center;
      padding: 0 var(--s3);
      margin-bottom: var(--s7);
    }
    .section-title {
      font-family: var(--font-display);
      font-size: clamp(28px, 3.5vw, 48px);
      font-weight: 800;
      letter-spacing: -1px;
      color: var(--navy);
      margin-bottom: var(--s2);
    }
    .section-sub {
      font-size: 17px;
      color: var(--gray4);
      max-width: 560px;
      margin: 0 auto;
    }

    .services-grid {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 var(--s3);
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--s3);
    }
    .service-card {
      background: var(--white);
      border-radius: var(--radius-xl);
      padding: var(--s5);
      border: 1px solid var(--gray2);
      position: relative;
      overflow: hidden;
      transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
      cursor: pointer;
    }
    .service-card::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(1,66,106,0.04) 0%, transparent 60%);
      opacity: 0;
      transition: opacity 0.3s;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 20px 60px rgba(0,0,0,0.08);
      border-color: rgba(1,66,106,0.2);
    }
    .service-card:hover::before { opacity: 1; }
    .service-card-icon {
      width: 56px; height: 56px;
      border-radius: var(--radius-lg);
      background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dk) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 26px;
      margin-bottom: var(--s3);
      box-shadow: 0 8px 24px rgba(1,66,106,0.3);
    }
    .service-card-name {
      font-family: var(--font-display);
      font-size: 20px;
      font-weight: 700;
      color: var(--navy);
      margin-bottom: var(--s2);
      letter-spacing: -0.3px;
    }
    .service-card-desc {
      font-size: 15px;
      color: var(--gray4);
      line-height: 1.6;
      margin-bottom: var(--s4);
    }
    .service-card-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      margin-bottom: var(--s4);
    }
    .service-card-features li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: var(--gray5);
    }
    .service-card-features li::before {
      content: '';
      width: 6px; height: 6px;
      border-radius: 50%;
      background: var(--blue);
      margin-top: 6px;
      flex-shrink: 0;
    }
    .service-card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 14px;
      font-weight: 600;
      color: var(--blue);
      transition: gap 0.2s;
    }
    .service-card-link:hover { gap: 10px; }
    .service-card-link svg { width: 16px; height: 16px; }

    @media (max-width: 900px) {
      .services-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 600px) {
      .services-grid { grid-template-columns: 1fr; }
    }

    /* ============================================================
       HVAC SECTION (dark)
    ============================================================ */
    #hvac {
      background: var(--navy);
      padding: var(--s8) 0;
      position: relative;
      overflow: hidden;
    }
    #hvac::before {
      content: '';
      position: absolute;
      top: -200px; right: -200px;
      width: 600px; height: 600px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(1,66,106,0.15) 0%, transparent 70%);
      pointer-events: none;
    }
    .hvac-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 var(--s3);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--s7);
      align-items: center;
    }
    .hvac-content .section-tag { color: var(--blue-lt); }
    .hvac-content .section-title { color: var(--white); }
    .hvac-content .section-sub { color: rgba(255,255,255,0.6); margin-left: 0; text-align: left; }
    .hvac-systems {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--s2);
      margin-top: var(--s4);
    }
    .hvac-chip {
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius);
      padding: 12px var(--s2);
      font-size: 13px;
      font-weight: 500;
      color: rgba(255,255,255,0.8);
      display: flex;
      align-items: center;
      gap: 8px;
      transition: background 0.2s, border-color 0.2s;
    }
    .hvac-chip:hover {
      background: rgba(1,66,106,0.15);
      border-color: rgba(1,66,106,0.3);
    }
    .hvac-chip-dot {
      width: 8px; height: 8px;
      border-radius: 50%;
      background: var(--blue);
      flex-shrink: 0;
    }
    .hvac-cta-group {
      display: flex;
      gap: var(--s2);
      margin-top: var(--s5);
    }
    .btn-primary-dark {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 28px;
      border-radius: 100px;
      font-size: 15px;
      font-weight: 600;
      background: var(--blue);
      color: var(--white);
      transition: background 0.2s, transform 0.15s;
    }
    .btn-primary-dark:hover { background: var(--blue-lt); transform: translateY(-2px); }
    .btn-ghost-dark {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 28px;
      border-radius: 100px;
      font-size: 15px;
      font-weight: 600;
      color: rgba(255,255,255,0.8);
      border: 1px solid rgba(255,255,255,0.2);
      transition: border-color 0.2s, color 0.2s;
    }
    .btn-ghost-dark:hover { border-color: rgba(255,255,255,0.5); color: var(--white); }

    /* HVAC visual */
    .hvac-visual {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--s2);
    }
    .hvac-system-card {
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-lg);
      padding: var(--s3);
      transition: background 0.2s, border-color 0.2s;
    }
    .hvac-system-card:hover {
      background: rgba(1,66,106,0.1);
      border-color: rgba(1,66,106,0.25);
    }
    .hvac-system-card:first-child {
      grid-column: 1 / -1;
      background: rgba(1,66,106,0.1);
      border-color: rgba(1,66,106,0.25);
    }
    .hsc-icon { font-size: 28px; margin-bottom: var(--s2); }
    .hsc-name {
      font-family: var(--font-display);
      font-size: 16px;
      font-weight: 700;
      color: var(--white);
      margin-bottom: 6px;
    }
    .hsc-desc {
      font-size: 13px;
      color: rgba(255,255,255,0.55);
      line-height: 1.5;
    }

    @media (max-width: 900px) {
      .hvac-inner { grid-template-columns: 1fr; }
      .hvac-visual { display: none; }
    }

    /* ============================================================
       ENFRIADORES SECTION
    ============================================================ */
    #enfriadores {
      padding: var(--s8) 0;
      background: var(--white);
    }
    .enfriadores-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 var(--s3);
    }
    .enfriadores-header {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--s6);
      align-items: start;
      margin-bottom: var(--s7);
    }
    .enfriadores-header .section-sub { margin-left: 0; text-align: left; }

    /* Equipment selector */
    .equipment-selector {
      background: var(--gray0);
      border: 1px solid var(--gray2);
      border-radius: var(--radius-xl);
      padding: var(--s4);
    }
    .eq-label {
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--gray4);
      margin-bottom: var(--s3);
    }
    .eq-buttons {
      display: flex;
      gap: var(--s1);
      flex-wrap: wrap;
      margin-bottom: var(--s4);
    }
    .eq-btn {
      padding: 8px 16px;
      border-radius: 100px;
      font-size: 13px;
      font-weight: 600;
      background: var(--white);
      border: 1.5px solid var(--gray2);
      color: var(--gray4);
      transition: all 0.2s;
    }
    .eq-btn.active, .eq-btn:hover {
      background: var(--navy);
      border-color: var(--navy);
      color: var(--white);
    }
    .eq-display {
      background: var(--white);
      border: 1px solid var(--gray2);
      border-radius: var(--radius-lg);
      padding: var(--s4);
    }
    .eq-capacity {
      font-family: var(--font-display);
      font-size: 36px;
      font-weight: 800;
      color: var(--navy);
      letter-spacing: -1px;
      margin-bottom: 4px;
    }
    .eq-unit { font-size: 16px; font-weight: 500; color: var(--gray4); }
    .eq-name {
      font-size: 14px;
      color: var(--gray4);
      margin-bottom: var(--s3);
    }
    .eq-specs {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--s2);
    }
    .eq-spec {
      background: var(--gray0);
      border-radius: var(--radius);
      padding: 12px;
    }
    .eq-spec-label {
      font-size: 11px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: var(--gray4);
      margin-bottom: 4px;
    }
    .eq-spec-val {
      font-size: 15px;
      font-weight: 700;
      color: var(--navy);
    }
    .eq-cta {
      margin-top: var(--s3);
      width: 100%;
      padding: 12px;
      border-radius: var(--radius);
      background: var(--blue);
      color: var(--white);
      font-size: 14px;
      font-weight: 600;
      text-align: center;
      transition: background 0.2s;
    }
    .eq-cta:hover { background: var(--blue-dk); }

    /* Equipment cards grid */
    .eq-cards {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: var(--s2);
    }
    .eq-card {
      background: var(--gray0);
      border: 1.5px solid var(--gray2);
      border-radius: var(--radius-lg);
      padding: var(--s3);
      text-align: center;
      cursor: pointer;
      transition: all 0.2s;
    }
    .eq-card:hover, .eq-card.active {
      background: var(--navy);
      border-color: var(--navy);
      color: var(--white);
    }
    .eq-card-cap {
      font-family: var(--font-display);
      font-size: 20px;
      font-weight: 800;
      color: var(--navy);
      letter-spacing: -0.5px;
      transition: color 0.2s;
    }
    .eq-card:hover .eq-card-cap, .eq-card.active .eq-card-cap { color: var(--white); }
    .eq-card-unit {
      font-size: 10px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: var(--gray4);
      transition: color 0.2s;
    }
    .eq-card:hover .eq-card-unit, .eq-card.active .eq-card-unit { color: rgba(255,255,255,0.6); }

    @media (max-width: 900px) {
      .enfriadores-header { grid-template-columns: 1fr; }
      .eq-cards { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 600px) {
      .eq-cards { grid-template-columns: repeat(2, 1fr); }
    }

    /* ============================================================
       WHY CLIMAT
    ============================================================ */
    #why {
      padding: var(--s8) 0;
      background: var(--navy);
      position: relative;
      overflow: hidden;
    }
    #why::after {
      content: '';
      position: absolute;
      bottom: -100px; left: -100px;
      width: 500px; height: 500px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(1,66,106,0.1) 0%, transparent 70%);
      pointer-events: none;
    }
    .why-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 var(--s3);
    }
    .why-header {
      text-align: center;
      margin-bottom: var(--s7);
    }
    .why-header .section-tag { color: var(--blue-lt); }
    .why-header .section-title { color: var(--white); }
    .why-header .section-sub { color: rgba(255,255,255,0.55); }
    .why-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--s3);
    }
    .why-card {
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-xl);
      padding: var(--s5);
      transition: background 0.3s, border-color 0.3s, transform 0.3s;
    }
    .why-card:hover {
      background: rgba(1,66,106,0.1);
      border-color: rgba(1,66,106,0.25);
      transform: translateY(-4px);
    }
    .why-card-num {
      font-family: var(--font-display);
      font-size: 48px;
      font-weight: 800;
      color: rgba(1,66,106,0.3);
      letter-spacing: -2px;
      margin-bottom: var(--s2);
      line-height: 1;
    }
    .why-card-title {
      font-family: var(--font-display);
      font-size: 18px;
      font-weight: 700;
      color: var(--white);
      margin-bottom: var(--s2);
    }
    .why-card-desc {
      font-size: 14px;
      color: rgba(255,255,255,0.55);
      line-height: 1.65;
    }

    @media (max-width: 900px) {
      .why-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 600px) {
      .why-grid { grid-template-columns: 1fr; }
    }

    /* ============================================================
       PROCESS
    ============================================================ */
    #process {
      padding: var(--s8) 0;
      background: var(--gray0);
    }
    .process-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 var(--s3);
    }
    .process-header {
      text-align: center;
      margin-bottom: var(--s7);
    }
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
      position: relative;
    }
    .process-steps::before {
      content: '';
      position: absolute;
      top: 28px;
      left: calc(12.5% + 28px);
      right: calc(12.5% + 28px);
      height: 2px;
      background: linear-gradient(to right, var(--blue), var(--blue-lt), var(--blue));
    }
    .process-step {
      text-align: center;
      padding: 0 var(--s2);
      position: relative;
    }
    .step-num {
      width: 56px; height: 56px;
      border-radius: 50%;
      background: var(--white);
      border: 2px solid var(--blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-display);
      font-size: 18px;
      font-weight: 800;
      color: var(--blue);
      margin: 0 auto var(--s3);
      position: relative;
      z-index: 1;
      box-shadow: 0 0 0 6px var(--gray0);
    }
    .step-title {
      font-family: var(--font-display);
      font-size: 15px;
      font-weight: 700;
      color: var(--navy);
      margin-bottom: var(--s1);
    }
    .step-desc {
      font-size: 13px;
      color: var(--gray4);
      line-height: 1.55;
    }

    @media (max-width: 768px) {
      .process-steps {
        grid-template-columns: 1fr 1fr;
        gap: var(--s4);
      }
      .process-steps::before { display: none; }
    }
    @media (max-width: 480px) {
      .process-steps { grid-template-columns: 1fr; }
    }

    /* ============================================================
       CLIENTS / PROJECTS
    ============================================================ */
    #clients {
      padding: var(--s8) 0;
      background: var(--white);
    }
    .clients-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 var(--s3);
    }
    .clients-header {
      text-align: center;
      margin-bottom: var(--s7);
    }
    .clients-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: var(--s2);
    }
    .client-card {
      background: var(--gray0);
      border: 1.5px solid var(--gray2);
      border-radius: var(--radius-lg);
      padding: var(--s4);
      text-align: center;
      transition: all 0.25s;
    }
    .client-card:hover {
      border-color: rgba(1,66,106,0.3);
      background: rgba(1,66,106,0.03);
      transform: translateY(-3px);
      box-shadow: 0 12px 36px rgba(0,0,0,0.06);
    }
    .client-name {
      font-family: var(--font-display);
      font-size: 16px;
      font-weight: 700;
      color: var(--navy);
      margin-bottom: 4px;
    }
    .client-sector {
      font-size: 12px;
      color: var(--gray4);
      font-weight: 500;
    }

    @media (max-width: 900px) { .clients-grid { grid-template-columns: repeat(3, 1fr); } }
    @media (max-width: 600px) { .clients-grid { grid-template-columns: repeat(2, 1fr); } }

    /* ============================================================
       CTA FINAL
    ============================================================ */
    #cta {
      padding: var(--s8) 0;
      background: var(--navy);
      position: relative;
      overflow: hidden;
    }
    #cta::before {
      content: '';
      position: absolute;
      top: 50%; left: 50%;
      transform: translate(-50%, -50%);
      width: 800px; height: 400px;
      border-radius: 50%;
      background: radial-gradient(ellipse, rgba(1,66,106,0.2) 0%, transparent 70%);
      pointer-events: none;
    }
    .cta-inner {
      max-width: 800px;
      margin: 0 auto;
      padding: 0 var(--s3);
      text-align: center;
      position: relative;
      z-index: 1;
    }
    .cta-title {
      font-family: var(--font-display);
      font-size: clamp(32px, 4vw, 56px);
      font-weight: 800;
      letter-spacing: -1.5px;
      color: var(--white);
      margin-bottom: var(--s3);
    }
    .cta-sub {
      font-size: 18px;
      color: rgba(255,255,255,0.6);
      margin-bottom: var(--s5);
      line-height: 1.6;
    }
    .cta-actions {
      display: flex;
      gap: var(--s2);
      justify-content: center;
      flex-wrap: wrap;
    }

    /* ============================================================
       MULTI-STEP FORM MODAL
    ============================================================ */
    #form-modal {
      display: none;
      position: fixed;
      inset: 0;
      z-index: 2000;
      align-items: center;
      justify-content: center;
      padding: var(--s3);
    }
    #form-modal.open { display: flex; }
    .modal-overlay {
      position: absolute;
      inset: 0;
      background: rgba(10,22,40,0.75);
      backdrop-filter: blur(8px);
    }
    .modal-box {
      position: relative;
      background: var(--white);
      border-radius: var(--radius-xl);
      padding: var(--s5);
      width: 100%;
      max-width: 560px;
      max-height: 90vh;
      overflow-y: auto;
      box-shadow: 0 40px 120px rgba(0,0,0,0.3);
    }
    .modal-close {
      position: absolute;
      top: var(--s3); right: var(--s3);
      width: 32px; height: 32px;
      border-radius: 50%;
      background: var(--gray1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--gray4);
      transition: background 0.2s;
    }
    .modal-close:hover { background: var(--gray2); }
    .form-step { display: none; }
    .form-step.active { display: block; }
    .form-step-title {
      font-family: var(--font-display);
      font-size: 22px;
      font-weight: 700;
      color: var(--navy);
      margin-bottom: var(--s1);
    }
    .form-step-sub {
      font-size: 14px;
      color: var(--gray4);
      margin-bottom: var(--s4);
    }
    .form-progress {
      display: flex;
      gap: 4px;
      margin-bottom: var(--s4);
    }
    .form-progress-dot {
      height: 4px;
      flex: 1;
      border-radius: 2px;
      background: var(--gray2);
      transition: background 0.3s;
    }
    .form-progress-dot.done { background: var(--blue); }
    .form-field {
      margin-bottom: var(--s3);
    }
    .form-field label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--gray5);
      margin-bottom: 6px;
    }
    .form-field input,
    .form-field select,
    .form-field textarea {
      width: 100%;
      padding: 12px var(--s2);
      border: 1.5px solid var(--gray2);
      border-radius: var(--radius);
      font-size: 15px;
      font-family: var(--font-sans);
      color: var(--gray6);
      background: var(--white);
      outline: none;
      transition: border-color 0.2s;
    }
    .form-field input:focus,
    .form-field select:focus,
    .form-field textarea:focus { border-color: var(--blue); }
    .form-field textarea { min-height: 100px; resize: vertical; }
    .form-service-grid {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: var(--s2);
    }
    .form-service-opt {
      border: 1.5px solid var(--gray2);
      border-radius: var(--radius-lg);
      padding: var(--s3);
      text-align: center;
      cursor: pointer;
      transition: all 0.2s;
    }
    .form-service-opt:hover, .form-service-opt.selected {
      border-color: var(--blue);
      background: rgba(1,66,106,0.05);
    }
    .fso-icon { font-size: 28px; margin-bottom: var(--s1); }
    .fso-label { font-size: 13px; font-weight: 600; color: var(--navy); }
    .btn-form-next {
      width: 100%;
      padding: 14px;
      border-radius: var(--radius);
      background: var(--blue);
      color: var(--white);
      font-size: 15px;
      font-weight: 600;
      margin-top: var(--s3);
      transition: background 0.2s;
    }
    .btn-form-next:hover { background: var(--blue-dk); }
    .btn-form-back {
      padding: 14px;
      font-size: 14px;
      font-weight: 600;
      color: var(--gray4);
      margin-top: var(--s1);
      width: 100%;
    }
    .btn-form-back:hover { color: var(--navy); }
    .form-success {
      text-align: center;
      padding: var(--s5) 0;
    }
    .form-success-icon { font-size: 56px; margin-bottom: var(--s3); }
    .form-success-title {
      font-family: var(--font-display);
      font-size: 24px;
      font-weight: 700;
      color: var(--navy);
      margin-bottom: var(--s2);
    }
    .form-success-msg { font-size: 15px; color: var(--gray4); line-height: 1.6; }

    /* ============================================================
       FOOTER
    ============================================================ */
    #footer {
      background: var(--navy-mid);
      padding: var(--s7) 0 var(--s4);
    }
    .footer-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 var(--s3);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: var(--s5);
      padding-bottom: var(--s5);
      border-bottom: 1px solid rgba(255,255,255,0.08);
      margin-bottom: var(--s4);
    }
    .footer-brand .nav-logo {
      font-size: 24px;
      margin-bottom: var(--s3);
      display: inline-block;
    }
    .footer-tagline {
      font-size: 14px;
      color: rgba(255,255,255,0.5);
      line-height: 1.65;
      margin-bottom: var(--s3);
      max-width: 280px;
    }
    .footer-contact {
      display: flex;
      flex-direction: column;
      gap: var(--s2);
    }
    .footer-contact a {
      font-size: 14px;
      color: rgba(255,255,255,0.6);
      display: flex;
      align-items: center;
      gap: 8px;
      transition: color 0.2s;
    }
    .footer-contact a:hover { color: var(--blue-lt); }
    .footer-col-title {
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: rgba(255,255,255,0.4);
      margin-bottom: var(--s3);
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-links a {
      font-size: 14px;
      color: rgba(255,255,255,0.6);
      transition: color 0.2s;
    }
    .footer-links a:hover { color: var(--white); }
    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--s3);
    }
    .footer-legal {
      font-size: 12px;
      color: rgba(255,255,255,0.3);
    }
    .footer-rut {
      font-size: 12px;
      color: rgba(255,255,255,0.25);
    }

    @media (max-width: 900px) {
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 600px) {
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; align-items: flex-start; }
    }

    /* ============================================================
       WHATSAPP FLOAT
    ============================================================ */
    #wa-float {
      position: fixed;
      bottom: 24px;
      right: 24px;
      z-index: 900;
      display: flex;
      flex-direction: column;
      align-items: flex-end;
      gap: var(--s2);
    }
    .wa-bubble {
      background: var(--white);
      border: 1px solid var(--gray2);
      border-radius: var(--radius-lg);
      padding: 12px var(--s2);
      font-size: 13px;
      color: var(--gray5);
      max-width: 220px;
      box-shadow: 0 8px 24px rgba(0,0,0,0.12);
      display: none;
      animation: fadeInUp 0.3s var(--ease);
    }
    .wa-bubble.show { display: block; }
    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(8px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .wa-btn {
      width: 56px; height: 56px;
      border-radius: 50%;
      background: #25D366;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 8px 24px rgba(37,211,102,0.4);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .wa-btn:hover {
      transform: scale(1.1);
      box-shadow: 0 12px 32px rgba(37,211,102,0.5);
    }
    .wa-btn svg { width: 28px; height: 28px; }

    /* ============================================================
       SCROLL TOP
    ============================================================ */
    #scroll-top {
      position: fixed;
      bottom: 24px;
      left: 24px;
      z-index: 900;
      width: 44px; height: 44px;
      border-radius: 50%;
      background: var(--navy);
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s, transform 0.3s;
      font-size: 18px;
      box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    }
    #scroll-top.show {
      opacity: 1;
      pointer-events: auto;
    }
    #scroll-top:hover { transform: translateY(-2px); }
  
    /* --- Identidad CLIMAT: wordmark y acentos --- */
    .nav-logo{color:var(--climat-ink);}


    
    .footer-brand .nav-logo,footer .nav-logo{color:var(--white);}
    .section-tag{position:relative;padding-left:26px;}
    .section-tag::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:16px;height:3px;border-radius:2px;background:var(--climat-secondary);}
    .btn-primary:focus-visible,.btn-nav:focus-visible,.eq-cta:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid var(--climat-secondary);outline-offset:2px;}