:root {
      --verde-oscuro: #1b3a2d;
      --verde-medio: #2d6a4f;
      --verde-claro: #52b788;
      --verde-sutil: #d8f3dc;
      --tierra: #f5f0e8;
      --tierra-oscura: #e8e0d0;
      --blanco: #ffffff;
      --texto: #1a1a1a;
      --texto-suave: #5a5a5a;
      --borde: #ddd;
      --nav-h: 70px;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body { font-family: 'Georgia', serif; color: var(--texto); background: var(--blanco); font-size: 16px; line-height: 1.7; }
    a { text-decoration: none; color: inherit; }
    img { display: block; width: 100%; }

    /* NAVBAR */
    nav {
      position: fixed; top: 0; left: 0; right: 0;
      height: var(--nav-h); background: var(--verde-oscuro);
      display: flex; align-items: center; justify-content: space-between;
      padding: 0 48px; z-index: 1000;
      border-bottom: 2px solid var(--verde-medio);
    }
    .nav-logo { font-family: 'Georgia', serif; font-size: 22px; font-weight: bold; color: var(--blanco); letter-spacing: 1px; }
    .nav-logo span { color: var(--verde-claro); }
    .nav-logo img { width: auto; height: 34px; display: block; }
    .nav-links { display: flex; gap: 36px; list-style: none; }
    .nav-links a { color: rgba(255,255,255,0.85); font-family: 'Arial', sans-serif; font-size: 13px; letter-spacing: 1.5px; text-transform: uppercase; transition: color 0.2s; }
    .nav-links a:hover { color: var(--verde-claro); }
    .nav-links a.active:not(.nav-cta) { color: var(--verde-claro); }
    .nav-cta { background: var(--verde-claro); color: var(--verde-oscuro) !important; padding: 10px 22px; border-radius: 4px; font-weight: bold; font-size: 13px; letter-spacing: 1px; }
    .nav-cta:hover { background: #3da472 !important; color: white !important; }
    .nav-toggle {
      display: none; flex-direction: column; justify-content: center; gap: 5px;
      width: 32px; height: 32px; background: none; border: none; cursor: pointer; padding: 0; z-index: 1001;
    }
    .nav-toggle span { display: block; width: 100%; height: 2px; background: var(--blanco); transition: all 0.25s ease; }
    .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle.active span:nth-child(2) { opacity: 0; }
    .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    section { scroll-margin-top: var(--nav-h); }

    /* IMG PLACEHOLDER */
    .img-placeholder {
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      width: 100%; height: 100%; min-height: 300px;
      background: linear-gradient(135deg, #2d4a3a, #1b3a2d);
      color: rgba(255,255,255,0.3); font-family: 'Arial', sans-serif;
      font-size: 13px; letter-spacing: 1px; text-align: center; gap: 12px;
    }
    .img-placeholder .icon { font-size: 36px; opacity: 0.4; }
    .img-placeholder .label { text-transform: uppercase; letter-spacing: 2px; font-size: 11px; }

    /* BOCETO NOTA */
    .boceto-nota {
      background: #fffbe6; border: 1px dashed #f0c040; border-radius: 4px;
      padding: 10px 16px; font-family: 'Arial', sans-serif; font-size: 12px;
      color: #7a5c00; margin: 16px 0; display: flex; align-items: center; gap: 8px;
    }

    /* BUTTONS */
    .btn-primary {
      background: var(--verde-claro); color: var(--verde-oscuro);
      padding: 16px 36px; font-family: 'Arial', sans-serif; font-size: 14px;
      font-weight: bold; letter-spacing: 1.5px; text-transform: uppercase;
      border-radius: 4px; cursor: pointer; transition: background 0.2s; display: inline-block; border: none;
    }
    .btn-primary:hover { background: #3da472; color: white; }
    .btn-outline {
      background: transparent; color: var(--verde-oscuro);
      padding: 10px 24px; font-family: 'Arial', sans-serif; font-size: 12px;
      font-weight: bold; letter-spacing: 1.5px; text-transform: uppercase;
      border-radius: 4px; border: 2px solid var(--verde-oscuro);
      cursor: pointer; transition: all 0.2s; display: inline-block;
    }
    .btn-outline:hover { background: var(--verde-oscuro); color: white; }
    .btn-outline-white {
      background: transparent; color: white;
      padding: 10px 24px; font-family: 'Arial', sans-serif; font-size: 12px;
      font-weight: bold; letter-spacing: 1.5px; text-transform: uppercase;
      border-radius: 4px; border: 2px solid rgba(255,255,255,0.5);
      cursor: pointer; transition: all 0.2s; display: inline-block;
    }
    .btn-outline-white:hover { border-color: white; color: white; }

    /* SECTION BASE */
    .section-inner { max-width: 1200px; margin: 0 auto; padding: 100px 48px; }
    .section-eyebrow { font-family: 'Arial', sans-serif; font-size: 11px; letter-spacing: 3px; text-transform: uppercase; color: var(--verde-medio); margin-bottom: 16px; display: block; }
    .section-title { font-size: 38px; font-weight: normal; line-height: 1.25; color: var(--verde-oscuro); }
    .section-title em { font-style: italic; color: var(--verde-claro); }
    .section-desc { font-family: 'Arial', sans-serif; font-size: 16px; color: var(--texto-suave); margin-top: 20px; line-height: 1.7; }

    /* ===================== */
    /* HOME — HERO           */
    /* ===================== */
    #home {
      position: relative; min-height: 100vh; min-height: 100svh; overflow: hidden;
      display: flex; align-items: center;
      padding-top: var(--nav-h);
    }
    .home-hero-img { position: absolute; inset: 0; }
    .home-hero-overlay {
      position: absolute; inset: 0;
      background: linear-gradient(to top, rgba(10,25,18,0.88) 0%, rgba(10,25,18,0.4) 50%, rgba(10,25,18,0.15) 100%);
    }
    .home-hero-content {
      position: relative; z-index: 2; padding: 0 72px;
      display: flex; flex-direction: column; align-items: flex-start; gap: 48px;
    }
    .hero-title {
      font-size: 64px; line-height: 1.1; color: var(--blanco);
      font-weight: normal;
    }

    /* HOME — PROPUESTA DE VALOR */
    .propuesta-section {
      background: var(--blanco);
      padding: 100px 64px;
    }
    .propuesta-inner { max-width: 1200px; margin: 0 auto; }
    .propuesta-titulo {
      font-size: 42px; font-weight: normal; color: var(--verde-oscuro);
      line-height: 1.2; margin-bottom: 20px;
    }
    .propuesta-subtitulo {
      font-family: 'Arial', sans-serif; font-size: 17px; color: var(--texto-suave);
      line-height: 1.7; max-width: 700px; margin-bottom: 64px;
    }
    .propuesta-grid {
      display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start;
    }
    .propuesta-servicios { display: flex; flex-direction: column; gap: 0; }
    .servicio-link {
      display: flex; align-items: center; justify-content: space-between;
      padding: 28px 0; border-bottom: 1px solid var(--tierra-oscura);
      cursor: pointer; transition: all 0.2s;
    }
    .servicio-link:first-child { border-top: 1px solid var(--tierra-oscura); }
    .servicio-link:hover .servicio-link-nombre { color: var(--verde-medio); }
    .servicio-link-nombre {
      font-size: 22px; font-weight: normal; color: var(--verde-oscuro);
      letter-spacing: 0.5px; transition: color 0.2s;
      font-family: 'Georgia', serif;
    }

    /* HOME — CAROUSEL */
    .carousel-wrap { position: relative; overflow: hidden; border-radius: 4px; }
    .carousel-track { display: flex; transition: transform 0.6s ease; }
    .carousel-slide { min-width: 100%; }
    .carousel-slide .img-placeholder { aspect-ratio: 4/3; min-height: unset; }
    .carousel-nav {
      display: flex; justify-content: center; gap: 10px; margin-top: 16px;
    }
    .carousel-dot {
      width: 8px; height: 8px; border-radius: 50%; background: var(--tierra-oscura);
      cursor: pointer; transition: background 0.2s; border: none;
    }
    .carousel-dot.active { background: var(--verde-medio); }

    /* HOME — B2B LINE */
    .b2b-line {
      background: var(--verde-oscuro); padding: 40px 64px;
      display: flex; align-items: center; justify-content: center;
    }
    .b2b-line p {
      font-family: 'Arial', sans-serif; font-size: 21px; color: rgba(255,255,255,0.85);
      letter-spacing: 0.5px; text-align: center;
    }
    .b2b-line p strong { color: var(--verde-claro); font-style: normal; }

    /* HOME — CLIENTES */
    .clientes-section { background: var(--tierra); padding: 80px 64px; }
    .clientes-inner { max-width: 1200px; margin: 0 auto; }
    .clientes-titulo {
      font-family: 'Arial', sans-serif; font-size: 16px; letter-spacing: 3px;
      text-transform: uppercase; color: var(--texto-suave); text-align: center;
      margin-bottom: 48px;
    }
    .logos-grid {
      display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px;
      align-items: center;
    }
    .logo-placeholder {
      background: var(--verde-medio); border: 1px solid var(--verde-medio);
      border-radius: 4px; padding: 22px;
      display: flex; align-items: center; justify-content: center;
      min-height: 90px; transition: all 0.2s;
    }
    .logo-placeholder img { max-width: 100%; max-height: 42px; width: auto; height: auto; object-fit: contain; display: block; }
    .logo-placeholder .cliente-nombre {
      font-family: 'Arial', sans-serif; font-size: 13px; font-weight: bold;
      letter-spacing: 0.5px; text-transform: uppercase; color: var(--blanco);
      text-align: center; line-height: 1.3;
    }
    .logo-placeholder:hover { background: var(--verde-oscuro); }

    /* HOME — CTA BAND */
    .cta-band {
      background: var(--verde-oscuro); padding: 80px 64px;
      display: flex; flex-direction: column; align-items: center; gap: 32px;
    }
    .cta-band h2 {
      font-size: 40px; font-weight: normal; color: var(--blanco);
      text-align: center; letter-spacing: 1px;
    }

    /* ===================== */
    /* SERVICIOS             */
    /* ===================== */
    #servicios { background: var(--blanco); }
    .servicios-hero {
      position: relative; min-height: 60vh; overflow: hidden;
      display: flex; align-items: flex-end; padding-top: var(--nav-h);
    }
    .servicios-hero-img {
      position: absolute; inset: 0;
      background: linear-gradient(135deg, #2d4a3a, #1b3a2d);
    }
    .servicios-hero-img .img-placeholder { height: 100%; }
    .servicios-hero-overlay {
      position: absolute; inset: 0;
      background: linear-gradient(to top, rgba(10,25,18,0.85) 0%, rgba(10,25,18,0.3) 60%, transparent 100%);
    }
    .servicios-hero-content {
      position: relative; z-index: 2; padding: 64px 72px;
      max-width: 900px;
    }
    .servicios-hero-content h1 {
      font-size: 52px; font-weight: normal; color: var(--blanco);
      line-height: 1.2; margin-bottom: 0;
    }

    .servicios-intro {
      background: var(--tierra); padding: 60px 72px;
    }
    .servicios-intro-inner { max-width: 1200px; margin: 0 auto; }
    .servicios-intro h3 {
      font-size: 24px; font-weight: normal; color: var(--verde-oscuro);
      line-height: 1.5; max-width: 800px;
    }

    .servicios-grid {
      display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px;
    }
    .servicio-card {
      background: var(--verde-oscuro); padding: 52px 40px;
      position: relative; overflow: hidden; transition: background 0.3s; cursor: default;
    }
    .servicio-card:hover { background: var(--verde-medio); }
    .servicio-card::before {
      content: ''; position: absolute; top: 0; left: 0;
      width: 3px; height: 100%; background: var(--verde-claro);
    }
    .servicio-num { font-family: 'Arial', sans-serif; font-size: 11px; letter-spacing: 3px; color: var(--verde-claro); margin-bottom: 24px; display: block; }
    .servicio-titulo { font-size: 24px; color: var(--blanco); font-weight: normal; margin-bottom: 16px; line-height: 1.3; }
    .servicio-desc { font-family: 'Arial', sans-serif; font-size: 14px; color: rgba(255,255,255,0.65); line-height: 1.7; margin-bottom: 32px; }
    .servicio-items { list-style: none; display: flex; flex-direction: column; gap: 8px; }
    .servicio-items li { font-family: 'Arial', sans-serif; font-size: 13px; color: rgba(255,255,255,0.5); padding-left: 16px; position: relative; }
    .servicio-items li::before { content: '→'; position: absolute; left: 0; color: var(--verde-claro); }
    .servicio-img { margin-top: 28px; border-radius: 4px; overflow: hidden; aspect-ratio: 4/3; }
    .servicio-img img { width: 100%; height: 100%; object-fit: cover; display: block; }

    /* B2B BAND (servicios) */
    .b2b-band {
      background: var(--tierra); padding: 80px 64px;
      display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center;
    }
    .b2b-text .tag {
      display: inline-block; background: var(--verde-claro); color: var(--verde-oscuro);
      font-family: 'Arial', sans-serif; font-size: 11px; letter-spacing: 2px;
      text-transform: uppercase; padding: 6px 14px; border-radius: 2px;
      margin-bottom: 24px; font-weight: bold;
    }
    .b2b-text h3 { font-size: 32px; color: var(--verde-oscuro); font-weight: normal; line-height: 1.3; margin-bottom: 20px; }
    .b2b-text p { font-family: 'Arial', sans-serif; font-size: 15px; color: var(--texto-suave); line-height: 1.7; }
    .b2b-clientes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .cliente-tile { background: var(--blanco); border: 1px solid var(--tierra-oscura); padding: 24px 20px; border-radius: 4px; }
    .cliente-tile .icon { font-size: 24px; margin-bottom: 10px; }
    .cliente-tile .nombre { font-family: 'Arial', sans-serif; font-size: 13px; font-weight: bold; color: var(--verde-oscuro); margin-bottom: 6px; }
    .cliente-tile .detalle { font-family: 'Arial', sans-serif; font-size: 12px; color: var(--texto-suave); }

    /* ===================== */
    /* PROYECTOS             */
    /* ===================== */
    #proyectos { background: var(--blanco); }
    .portfolio-filters { display: flex; gap: 12px; margin-bottom: 48px; flex-wrap: wrap; }
    .filter-btn {
      font-family: 'Arial', sans-serif; font-size: 12px; letter-spacing: 1.5px;
      text-transform: uppercase; padding: 10px 24px; border: 1px solid var(--borde);
      border-radius: 100px; cursor: pointer; background: transparent;
      color: var(--texto-suave); transition: all 0.2s;
    }
    .filter-btn:hover, .filter-btn.active { background: var(--verde-oscuro); color: white; border-color: var(--verde-oscuro); }
    .portfolio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .portfolio-item { cursor: pointer; overflow: hidden; border-radius: 4px; position: relative; }
    .portfolio-item.featured { grid-column: span 2; }
    .portfolio-img {
      background: linear-gradient(135deg, #2d4a3a, #1b3a2d);
      aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center;
      transition: transform 0.4s; position: relative;
    }
    .portfolio-item.featured .portfolio-img { aspect-ratio: 16/9; }
    .portfolio-item:hover .portfolio-img { transform: scale(1.03); }
    .portfolio-overlay {
      position: absolute; bottom: 0; left: 0; right: 0;
      background: linear-gradient(transparent, rgba(10,25,18,0.85));
      padding: 40px 24px 24px; opacity: 0; transition: opacity 0.3s;
    }
    .portfolio-item:hover .portfolio-overlay { opacity: 1; }
    .portfolio-overlay h4 { color: white; font-size: 18px; font-weight: normal; margin-bottom: 4px; }
    .portfolio-overlay span { color: var(--verde-claro); font-family: 'Arial', sans-serif; font-size: 12px; letter-spacing: 1px; }
    .portfolio-meta { padding: 16px 4px 0; }
    .portfolio-meta h4 { font-size: 16px; font-weight: normal; color: var(--verde-oscuro); margin-bottom: 4px; }
    .portfolio-meta span { font-family: 'Arial', sans-serif; font-size: 12px; color: var(--texto-suave); letter-spacing: 0.5px; }

    /* ===================== */
    /* NOSOTROS              */
    /* ===================== */
    #nosotros { background: var(--tierra); }
    .nosotros-hero {
      position: relative; min-height: 45vh; overflow: hidden;
      display: flex; align-items: flex-end; padding-top: var(--nav-h);
    }
    .nosotros-hero-img {
      position: absolute; inset: 0;
      background: linear-gradient(135deg, #2d4a3a, #1b3a2d);
    }
    .nosotros-hero-img .img-placeholder { height: 100%; }
    .nosotros-hero-overlay {
      position: absolute; inset: 0;
      background: linear-gradient(to top, rgba(10,25,18,0.7) 0%, rgba(10,25,18,0.2) 70%, transparent 100%);
    }
    .nosotros-hero-tag {
      position: relative; z-index: 2; padding: 40px 72px;
      font-family: 'Arial', sans-serif; font-size: 11px;
      letter-spacing: 3px; text-transform: uppercase; color: var(--verde-claro);
    }

    .nosotros-diferencial { background: var(--tierra); }
    .nosotros-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
    .nosotros-img-wrap { position: relative; }
    .nosotros-img-main {
      background: linear-gradient(135deg, #2d4a3a, #1b3a2d);
      aspect-ratio: 3/4; border-radius: 4px;
      display: flex; align-items: center; justify-content: center; overflow: hidden;
    }
    .nosotros-img-float {
      position: absolute; bottom: -32px; right: -32px; width: 55%;
      background: var(--verde-oscuro); border-radius: 4px;
      border: 6px solid var(--tierra); aspect-ratio: 4/3;
      display: flex; align-items: center; justify-content: center; overflow: hidden;
    }
    .nosotros-content {}
    .nosotros-content p { font-family: 'Arial', sans-serif; font-size: 15px; color: var(--texto-suave); line-height: 1.8; margin-bottom: 20px; }
    .diferenciales { margin-top: 40px; display: flex; flex-direction: column; gap: 20px; }
    .diferencial { display: flex; gap: 20px; align-items: flex-start; }
    .diferencial-icon {
      width: 44px; height: 44px; background: var(--verde-oscuro); border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-size: 18px; flex-shrink: 0; margin-top: 2px;
    }
    .diferencial-text h5 { font-size: 16px; color: var(--verde-oscuro); margin-bottom: 4px; font-weight: bold; font-family: 'Arial', sans-serif; }
    .diferencial-text p { font-family: 'Arial', sans-serif; font-size: 14px; color: var(--texto-suave); line-height: 1.6; margin: 0; }

    .historia-section {
      background: var(--blanco); padding: 80px 72px;
    }
    .historia-inner { max-width: 1200px; margin: 0 auto; }
    .historia-section p { font-family: 'Arial', sans-serif; font-size: 16px; color: var(--texto-suave); line-height: 1.85; }
    .historia-grid { display: grid; grid-template-columns: 1fr auto; gap: 64px; align-items: start; }
    .historia-img { border-radius: 4px; overflow: hidden; aspect-ratio: 3/4; width: 220px; }
    .historia-img img { width: 100%; height: 100%; object-fit: cover; display: block; }

    /* ===================== */
    /* CONTACTO              */
    /* ===================== */
    #contacto { background: var(--blanco); }
    .contacto-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
    .contacto-info p { font-family: 'Arial', sans-serif; font-size: 15px; color: var(--texto-suave); line-height: 1.7; margin-bottom: 40px; }
    .contacto-opciones { display: flex; flex-direction: column; gap: 16px; }
    .contacto-btn {
      display: flex; align-items: center; gap: 16px; padding: 20px 24px;
      border-radius: 4px; font-family: 'Arial', sans-serif; font-size: 15px;
      font-weight: bold; cursor: pointer; transition: all 0.2s; border: 2px solid transparent;
    }
    .contacto-btn.whatsapp { background: #25d366; color: white; }
    .contacto-btn.whatsapp:hover { background: #1ebe5d; }
    .contacto-btn.instagram { background: linear-gradient(135deg, #f58529, #dd2a7b, #8134af); color: white; }
    .contacto-btn.email { background: transparent; border-color: var(--verde-medio); color: var(--verde-oscuro); }
    .contacto-btn.email:hover { background: var(--verde-sutil); }
    .contacto-btn .icon { font-size: 22px; }

    .contacto-form { background: var(--tierra); padding: 48px; border-radius: 4px; }
    .contacto-form h4 { font-size: 20px; font-weight: bold; color: var(--verde-oscuro); margin-bottom: 32px; font-family: 'Arial', sans-serif; letter-spacing: 0.5px; line-height: 1.3; }
    .form-group { margin-bottom: 20px; }
    .form-group label { display: block; font-family: 'Arial', sans-serif; font-size: 12px; letter-spacing: 1px; text-transform: uppercase; color: var(--texto-suave); margin-bottom: 8px; }
    .form-group input, .form-group select, .form-group textarea {
      width: 100%; padding: 14px 16px; border: 1px solid var(--tierra-oscura);
      border-radius: 4px; font-family: 'Arial', sans-serif; font-size: 14px;
      color: var(--texto); background: var(--blanco); outline: none; transition: border-color 0.2s;
    }
    .form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--verde-medio); }
    .form-group textarea { min-height: 100px; resize: vertical; }
    .form-submit {
      width: 100%; padding: 16px; background: var(--verde-oscuro); color: white;
      border: none; border-radius: 4px; font-family: 'Arial', sans-serif;
      font-size: 14px; font-weight: bold; letter-spacing: 1px; text-transform: uppercase;
      cursor: pointer; margin-top: 8px; transition: background 0.2s;
    }
    .form-submit:hover { background: var(--verde-medio); }

    /* DIVIDER ANTES DEL FOOTER */
    .footer-divider { height: 1px; width: 100%; background: rgba(255,255,255,0.2); }

    /* FOOTER */
    footer { background: var(--verde-oscuro); padding: 60px 64px 32px; color: rgba(255,255,255,0.5); }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 60px; margin-bottom: 60px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.08); }
    .footer-brand .brand-name { font-size: 22px; color: var(--blanco); font-weight: bold; margin-bottom: 12px; }
    .footer-brand .brand-name span { color: var(--verde-claro); }
    .footer-brand p { font-family: 'Arial', sans-serif; font-size: 13px; line-height: 1.7; max-width: 280px; }
    .footer-col h5 { color: var(--blanco); font-family: 'Arial', sans-serif; font-size: 11px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 20px; }
    .footer-col ul { list-style: none; }
    .footer-col ul li { font-family: 'Arial', sans-serif; font-size: 13px; padding: 5px 0; }
    .footer-col ul li a { color: rgba(255,255,255,0.5); transition: color 0.2s; }
    .footer-col ul li a:hover { color: var(--verde-claro); }
    .footer-bottom { display: flex; justify-content: center; align-items: center; font-family: 'Arial', sans-serif; font-size: 12px; }
    .footer-social { display: flex; gap: 16px; }
    .social-link {
      width: 36px; height: 36px; border: 1px solid rgba(255,255,255,0.15);
      border-radius: 50%; display: flex; align-items: center; justify-content: center;
      color: rgba(255,255,255,0.5); font-size: 14px; transition: all 0.2s; cursor: pointer;
    }
    .social-link:hover { border-color: var(--verde-claro); color: var(--verde-claro); }

    /* ===================================== */
    /* RESPONSIVE — TABLET (≤968px)           */
    /* ===================================== */
    @media (max-width: 968px) {
      nav { padding: 0 24px; }
      .nav-toggle { display: flex; }
      .nav-links {
        position: fixed; top: var(--nav-h); left: 0; right: 0;
        background: var(--verde-oscuro); flex-direction: column; align-items: stretch; gap: 0;
        max-height: 0; overflow: hidden; transition: max-height 0.3s ease;
        border-bottom: 2px solid var(--verde-medio);
      }
      .nav-links.open { max-height: 500px; }
      .nav-links li { width: 100%; }
      .nav-links a { display: block; padding: 18px 32px; border-bottom: 1px solid rgba(255,255,255,0.08); font-size: 14px; }
      .nav-links a.nav-cta { margin: 16px 32px; width: calc(100% - 64px); text-align: center; border-bottom: none; }

      .section-inner { padding: 72px 32px; }
      .section-title { font-size: 30px; }

      .hero-title { font-size: 46px; }
      .home-hero-content { padding: 0 32px; gap: 32px; }

      .propuesta-section { padding: 72px 32px; }
      .propuesta-grid { grid-template-columns: 1fr; gap: 48px; }
      .propuesta-titulo { font-size: 32px; }

      .b2b-line { padding: 28px 32px; }
      .b2b-line p { font-size: 18px; }
      .clientes-titulo { font-size: 15px; }

      .clientes-section { padding: 56px 32px; }
      .logos-grid { grid-template-columns: repeat(3, 1fr); }

      .cta-band { padding: 56px 32px; }
      .cta-band h2 { font-size: 28px; }

      .servicios-hero-content { padding: 40px 32px; }
      .servicios-hero-content h1 { font-size: 34px; }
      .servicios-intro { padding: 40px 32px; }
      .servicios-intro h3 { font-size: 20px; }
      .servicios-grid { grid-template-columns: 1fr; }

      .b2b-band { padding: 56px 32px; grid-template-columns: 1fr; gap: 40px; }
      .b2b-text h3 { font-size: 26px; }
      .b2b-clientes { grid-template-columns: 1fr 1fr; }

      .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
      .portfolio-item.featured { grid-column: span 2; }

      .nosotros-hero-tag { padding: 24px 32px; }
      .nosotros-grid { grid-template-columns: 1fr; gap: 48px; }

      .historia-section { padding: 56px 32px; }
      .historia-grid { grid-template-columns: 1fr; gap: 32px; }
      .historia-img { width: 160px; }

      .contacto-grid { grid-template-columns: 1fr; gap: 48px; }
      .contacto-form { padding: 32px; }

      .footer-grid { grid-template-columns: 1fr; gap: 40px; }
    }

    /* ===================================== */
    /* RESPONSIVE — MOBILE (≤600px)           */
    /* ===================================== */
    @media (max-width: 600px) {
      nav { padding: 0 20px; }
      .nav-logo { font-size: 19px; }

      .section-inner { padding: 56px 20px; }
      .section-title { font-size: 26px; }
      .section-desc { font-size: 14px; }

      .hero-title { font-size: 36px; }
      .home-hero-content { padding: 0 24px; gap: 24px; }
      .btn-primary { padding: 14px 28px; font-size: 13px; }

      .propuesta-section { padding: 56px 20px; }
      .propuesta-titulo { font-size: 26px; }
      .propuesta-subtitulo { font-size: 15px; margin-bottom: 40px; }
      .servicio-link-nombre { font-size: 18px; }

      .b2b-line p { font-size: 17px; line-height: 1.6; }

      .clientes-section { padding: 48px 20px; }
      .clientes-titulo { font-size: 14px; }
      .logos-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
      .logo-placeholder img { max-height: 34px; }
      .logo-placeholder .cliente-nombre { font-size: 12px; }

      .cta-band { padding: 48px 20px; gap: 24px; }
      .cta-band h2 { font-size: 22px; }

      .servicios-hero { min-height: 50vh; }
      .servicios-hero-content { padding: 28px 20px; }
      .servicios-hero-content h1 { font-size: 26px; }
      .servicios-intro { padding: 32px 20px; }
      .servicios-intro h3 { font-size: 18px; }
      .servicio-card { padding: 36px 24px; }

      .b2b-band { padding: 48px 20px; }
      .b2b-text h3 { font-size: 22px; }
      .b2b-clientes { grid-template-columns: 1fr; }

      .portfolio-filters { gap: 8px; }
      .filter-btn { padding: 8px 16px; font-size: 11px; }
      .portfolio-grid { grid-template-columns: 1fr; gap: 16px; }
      .portfolio-item.featured { grid-column: span 1; }
      .portfolio-item.featured .portfolio-img { aspect-ratio: 4/3; }

      .nosotros-hero { min-height: 35vh; }
      .nosotros-hero-tag { padding: 20px; font-size: 10px; }

      .historia-section { padding: 48px 20px; }

      .contacto-grid { gap: 32px; }
      .contacto-btn { padding: 16px 18px; font-size: 14px; }
      .contacto-form { padding: 24px; }

      footer { padding: 48px 20px 24px; }
      .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
    }