:root {
      --bg: #080b10;
      --surface: #0e1318;
      --surface2: #141c24;
      --surface3: #1a2535;
      --accent: #00e5ff;
      --accent2: #7b61ff;
      --accent3: #ff6b6b;
      --text: #e8edf2;
      --muted: #8a9ab0;
      --border: rgba(255,255,255,0.07);
      --border-accent: rgba(0,229,255,0.2);
      --glow: 0 0 40px rgba(0,229,255,0.15);
      --glow-strong: 0 0 60px rgba(0,229,255,0.25);
      --radius: 1.5rem;
      --radius-sm: 0.75rem;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }

    body {
      font-family: 'DM Sans', sans-serif;
      background: var(--bg);
      color: var(--text);
      overflow-x: hidden;
      line-height: 1.65;
    }

    /* ── NOISE OVERLAY ── */
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
      pointer-events: none;
      z-index: 9999;
      opacity: 0.4;
    }

    /* ── FONDO ANIMADO ── */
    .bg-gradient {
      position: fixed;
      top: 0; left: 0;
      width: 100vw; height: 100vh;
      z-index: -2;
      background: linear-gradient(45deg, var(--bg), #0a1128, var(--surface2), var(--bg));
      background-size: 400% 400%;
      animation: gradientMove 15s ease infinite;
    }

    /* Orbs de color de fondo */
    .bg-orb {
      position: fixed;
      border-radius: 50%;
      pointer-events: none;
      z-index: -1;
      filter: blur(80px);
      opacity: 0.12;
    }
    .bg-orb-1 {
      width: 600px; height: 600px;
      background: var(--accent);
      top: -200px; right: -100px;
      animation: orbFloat 20s ease-in-out infinite;
    }
    .bg-orb-2 {
      width: 400px; height: 400px;
      background: var(--accent2);
      bottom: 10%; left: -100px;
      animation: orbFloat 25s ease-in-out infinite reverse;
    }

    @keyframes gradientMove {
      0% { background-position: 0% 50%; }
      50% { background-position: 100% 50%; }
      100% { background-position: 0% 50%; }
    }
    @keyframes orbFloat {
      0%, 100% { transform: translate(0, 0) scale(1); }
      33% { transform: translate(30px, -40px) scale(1.05); }
      66% { transform: translate(-20px, 20px) scale(0.95); }
    }

    /* ── NAV ── */
    nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1.25rem 6vw;
      border-bottom: 1px solid var(--border);
      backdrop-filter: blur(20px);
      background: rgba(8,11,16,0.8);
      transition: background 0.3s;
    }

    .nav-logo {
      font-family: 'Syne', sans-serif;
      font-weight: 800;
      font-size: 1.2rem;
      letter-spacing: -0.02em;
      color: var(--accent);
      text-decoration: none;
      position: relative;
    }
    .nav-logo::after {
      content: '';
      position: absolute;
      bottom: -2px; left: 0;
      width: 100%; height: 2px;
      background: linear-gradient(90deg, var(--accent), var(--accent2));
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.3s;
    }
    .nav-logo:hover::after { transform: scaleX(1); }

    .nav-links {
      display: flex;
      gap: 2rem;
      list-style: none;
      align-items: center;
    }

    .nav-links a {
      font-size: 0.85rem;
      font-weight: 500;
      color: var(--muted);
      text-decoration: none;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      transition: color 0.2s;
    }
    .nav-links a:hover { color: var(--text); }

    .nav-cta {
      background: linear-gradient(135deg, var(--accent), #00b8cc) !important;
      color: #080b10 !important;
      padding: 0.5rem 1.4rem !important;
      border-radius: 999px !important;
      font-weight: 700 !important;
      transition: box-shadow 0.3s, transform 0.2s !important;
      text-transform: none !important;
      letter-spacing: 0 !important;
    }
    .nav-cta:hover {
      box-shadow: 0 0 24px rgba(0,229,255,0.4) !important;
      transform: translateY(-1px) !important;
      color: #080b10 !important;
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: none;
      border: none;
      padding: 4px;
    }
    .hamburger span {
      display: block;
      width: 24px; height: 2px;
      background: var(--text);
      border-radius: 2px;
      transition: 0.3s;
    }

    /* ── HERO ── */
    #home {
      min-height: 100vh;
      display: grid;
      grid-template-columns: 1fr 1fr;
      align-items: center;
      gap: 4rem;
      padding: 10rem 6vw 6rem;
      position: relative;
      overflow: hidden;
    }

    #home::after {
      content: '';
      position: absolute;
      width: 700px; height: 700px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(0,229,255,0.06) 0%, transparent 70%);
      top: 50%; left: 55%;
      transform: translate(-50%, -50%);
      pointer-events: none;
    }

    /* Líneas decorativas de fondo en hero */
    #home::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(0,229,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,229,255,0.03) 1px, transparent 1px);
      background-size: 60px 60px;
      pointer-events: none;
      mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: rgba(0,229,255,0.08);
      border: 1px solid rgba(0,229,255,0.25);
      border-radius: 999px;
      padding: 0.4rem 1.1rem;
      font-size: 0.78rem;
      color: var(--accent);
      letter-spacing: 0.08em;
      text-transform: uppercase;
      font-weight: 600;
      margin-bottom: 1.5rem;
    }
    .hero-badge::before {
      content: '';
      display: block;
      width: 7px; height: 7px;
      border-radius: 50%;
      background: var(--accent);
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.8); }
    }

    .hero-title {
      font-family: 'Syne', sans-serif;
      font-weight: 800;
      font-size: clamp(2.8rem, 5.5vw, 5rem);
      line-height: 1.05;
      letter-spacing: -0.03em;
      margin-bottom: 1.5rem;
    }
    .highlight {
      background: linear-gradient(120deg, var(--accent), var(--accent2));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-sub {
      font-size: 1.05rem;
      color: var(--muted);
      max-width: 480px;
      margin-bottom: 2.5rem;
      font-weight: 300;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      align-items: center;
    }

    /* Botones globales */
    .btn-primary {
      background: linear-gradient(135deg, var(--accent), #00b8cc);
      color: #080b10;
      font-family: 'DM Sans', sans-serif;
      font-weight: 700;
      font-size: 0.9rem;
      padding: 0.9rem 2.2rem;
      border-radius: 999px;
      text-decoration: none;
      letter-spacing: 0.02em;
      transition: box-shadow 0.3s, transform 0.2s;
      border: none;
      cursor: pointer;
      display: inline-block;
    }
    .btn-primary:hover {
      box-shadow: 0 0 35px rgba(0,229,255,0.45);
      transform: translateY(-2px);
    }

    .btn-ghost {
      border: 1px solid var(--border);
      color: var(--text);
      font-family: 'DM Sans', sans-serif;
      font-weight: 500;
      font-size: 0.9rem;
      padding: 0.9rem 2.2rem;
      border-radius: 999px;
      text-decoration: none;
      transition: border-color 0.2s, color 0.2s, background 0.2s;
      display: inline-block;
    }
    .btn-ghost:hover {
      border-color: var(--accent);
      color: var(--accent);
      background: rgba(0,229,255,0.05);
    }

    /* Hero Image */
    .hero-img {
      position: relative;
      display: flex;
      justify-content: center;
    }
    .hero-img-frame {
      width: min(380px, 90%);
      aspect-ratio: 3/4;
      border-radius: 2rem;
      overflow: hidden;
      position: relative;
      border: 1px solid var(--border-accent);
      box-shadow: var(--glow), 0 30px 80px rgba(0,0,0,0.5);
    }
    .hero-img-frame img {
      width: 100%; height: 100%;
      object-fit: cover;
      object-position: top;
      filter: grayscale(15%);
      transition: filter 0.5s;
    }
    .hero-img-frame:hover img { filter: grayscale(0%); }

    /* Efecto de borde animado en frame */
    .hero-img-frame::after {
      content: '';
      position: absolute;
      inset: 0;
      border-radius: 2rem;
      background: linear-gradient(135deg, rgba(0,229,255,0.1), transparent, rgba(123,97,255,0.1));
      pointer-events: none;
    }

    .hero-float-card {
      position: absolute;
      bottom: -1rem;
      left: -2rem;
      background: rgba(20, 28, 36, 0.9);
      backdrop-filter: blur(20px);
      border: 1px solid var(--border-accent);
      border-radius: 1rem;
      padding: 1rem 1.25rem;
      display: flex;
      align-items: center;
      gap: 0.75rem;
      box-shadow: 0 8px 32px rgba(0,0,0,0.5), var(--glow);
      animation: float 4s ease-in-out infinite;
    }
    @keyframes float {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-10px); }
    }
    .hero-float-icon {
      width: 42px; height: 42px;
      border-radius: 0.7rem;
      background: linear-gradient(135deg, var(--accent), var(--accent2));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      flex-shrink: 0;
    }
    .hero-float-text strong {
      display: block;
      font-family: 'Syne', sans-serif;
      font-size: 0.9rem;
      font-weight: 700;
    }
    .hero-float-text span {
      font-size: 0.73rem;
      color: var(--muted);
    }

    /* Hero stats inline */
    .hero-stats {
      display: flex;
      gap: 2rem;
      margin-top: 2.5rem;
      padding-top: 2rem;
      border-top: 1px solid var(--border);
    }
    .hero-stat .num {
      font-family: 'Syne', sans-serif;
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--accent);
      line-height: 1;
    }
    .hero-stat .lbl {
      font-size: 0.75rem;
      color: var(--muted);
      margin-top: 0.2rem;
    }

    /* ── SECCIÓN COMÚN ── */
    section { padding: 7rem 6vw; }

    .section-label {
      font-size: 0.72rem;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--accent);
      font-weight: 700;
      margin-bottom: 0.75rem;
    }
    .section-title {
      font-family: 'Syne', sans-serif;
      font-weight: 800;
      font-size: clamp(1.8rem, 3.5vw, 3rem);
      letter-spacing: -0.03em;
      margin-bottom: 1.25rem;
      line-height: 1.1;
    }
    .section-body {
      color: var(--muted);
      max-width: 520px;
      font-weight: 300;
      font-size: 1rem;
      line-height: 1.8;
    }

    /* ── ABOUT ── */
    #about {
      background: var(--surface);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      position: relative;
      overflow: hidden;
    }
    #about::before {
      content: '';
      position: absolute;
      right: -100px; top: 50%;
      transform: translateY(-50%);
      width: 500px; height: 500px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(123,97,255,0.06), transparent 70%);
      pointer-events: none;
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 5rem;
      align-items: center;
      position: relative;
    }
    .about-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.6rem;
      margin-top: 2rem;
    }
    .tag {
      background: var(--surface2);
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 0.35rem 1rem;
      font-size: 0.8rem;
      color: var(--muted);
      font-weight: 500;
      transition: border-color 0.2s, color 0.2s;
    }
    .tag:hover {
      border-color: var(--border-accent);
      color: var(--accent);
    }

    .about-stats {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.25rem;
    }
    .stat-card {
      background: var(--surface2);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 1.75rem;
      transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
      position: relative;
      overflow: hidden;
    }
    .stat-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 2px;
      background: linear-gradient(90deg, var(--accent), var(--accent2));
      opacity: 0;
      transition: opacity 0.3s;
    }
    .stat-card:hover {
      border-color: rgba(0,229,255,0.2);
      box-shadow: var(--glow);
      transform: translateY(-3px);
    }
    .stat-card:hover::before { opacity: 1; }
    .stat-card .num {
      font-family: 'Syne', sans-serif;
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--accent);
      line-height: 1;
      margin-bottom: 0.4rem;
    }
    .stat-card .label {
      font-size: 0.83rem;
      color: var(--muted);
      font-weight: 300;
    }

    /* ── SERVICES ── */
    #services {
      background: var(--bg);
      position: relative;
      overflow: hidden;
    }

    .services-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      margin-bottom: 3.5rem;
      flex-wrap: wrap;
      gap: 2rem;
    }
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.25rem;
    }
    .service-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 2.25rem;
      transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
      cursor: default;
      position: relative;
      overflow: hidden;
    }
    .service-card::after {
      content: '';
      position: absolute;
      bottom: 0; left: 0; right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--accent), transparent);
      opacity: 0;
      transition: opacity 0.3s;
    }
    .service-card:hover {
      border-color: rgba(0,229,255,0.25);
      transform: translateY(-5px);
      box-shadow: 0 25px 70px rgba(0,0,0,0.4), var(--glow);
    }
    .service-card:hover::after { opacity: 1; }

    .service-icon {
      width: 54px; height: 54px;
      border-radius: 1rem;
      background: linear-gradient(135deg, rgba(0,229,255,0.12), rgba(123,97,255,0.12));
      border: 1px solid rgba(0,229,255,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 1.5rem;
      transition: box-shadow 0.3s;
    }
    .service-card:hover .service-icon {
      box-shadow: 0 0 20px rgba(0,229,255,0.2);
    }
    .service-card h3 {
      font-family: 'Syne', sans-serif;
      font-weight: 700;
      font-size: 1.1rem;
      margin-bottom: 0.75rem;
      letter-spacing: -0.02em;
    }
    .service-card p {
      font-size: 0.88rem;
      color: var(--muted);
      line-height: 1.75;
    }

    /* ── PROJECTS ── */
    #projects {
      background: var(--surface);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .projects-header { margin-bottom: 3.5rem; }

    .projects-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
    }
    .project-card {
      background: var(--surface2);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
    }
    .project-card:hover {
      border-color: rgba(0,229,255,0.25);
      transform: translateY(-4px);
      box-shadow: 0 20px 60px rgba(0,0,0,0.4);
    }

    /* ── FIX IMÁGENES PROYECTOS ── */
    .project-thumb {
      height: 220px;
      position: relative;        /* Contenedor de posicionamiento */
      overflow: hidden;
      background: linear-gradient(135deg, var(--surface2), #1a2535);
      border-bottom: 1px solid var(--border);
    }
    .project-thumb img {
      position: absolute;        /* Imagen toma todo el espacio */
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;         /* Recorta sin deformar */
      object-position: center top;
      transition: transform 0.6s ease;
      z-index: 0;
    }
    .project-card:hover .project-thumb img {
      transform: scale(1.06);
    }
    /* Overlay degradado sobre las imágenes */
    .project-thumb::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(
        to bottom,
        transparent 50%,
        rgba(20,28,36,0.85) 100%
      );
      z-index: 1;
      pointer-events: none;
    }
    /* Brillo radial (solo un ::before, sin duplicar) */
    .project-thumb::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 30% 30%, rgba(0,229,255,0.07), transparent 60%);
      z-index: 2;
      pointer-events: none;
    }

    .project-body { padding: 1.75rem; }
    .project-body h3 {
      font-family: 'Syne', sans-serif;
      font-weight: 700;
      font-size: 1.05rem;
      margin-bottom: 0.6rem;
    }
    .project-body p {
      font-size: 0.85rem;
      color: var(--muted);
      margin-bottom: 1.25rem;
      line-height: 1.7;
    }
    .project-tech {
      display: flex;
      flex-wrap: wrap;
      gap: 0.4rem;
    }
    .tech-chip {
      background: rgba(0,229,255,0.07);
      border: 1px solid rgba(0,229,255,0.15);
      color: var(--accent);
      font-size: 0.72rem;
      padding: 0.25rem 0.7rem;
      border-radius: 999px;
      font-weight: 500;
    }

    /* ── ARTICLES PREVIEW (links a página de artículos) ── */
    #articles-preview {
      background: var(--bg);
    }
    .articles-header { margin-bottom: 3.5rem; }
    .articles-cta-row {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      margin-bottom: 3.5rem;
      flex-wrap: wrap;
      gap: 1.5rem;
    }

    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.25rem;
    }
    .article-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
      display: flex;
      flex-direction: column;
    }
    .article-card:hover {
      border-color: rgba(0,229,255,0.25);
      transform: translateY(-4px);
      box-shadow: 0 20px 60px rgba(0,0,0,0.35), var(--glow);
    }
    .article-thumb {
      height: 180px;
      background: linear-gradient(135deg, var(--surface2), #1a2535);
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 3rem;
      border-bottom: 1px solid var(--border);
    }
    .article-badge {
      position: absolute;
      top: 1rem; right: 1rem;
      background: rgba(123,97,255,0.15);
      border: 1px solid var(--accent2);
      color: #fff;
      font-size: 0.65rem;
      padding: 0.3rem 0.75rem;
      border-radius: 999px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }
    .article-badge.course {
      background: rgba(0,229,255,0.12);
      border-color: rgba(0,229,255,0.3);
      color: var(--accent);
    }
    .article-body {
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .article-meta {
      font-size: 0.75rem;
      color: var(--muted);
      margin-bottom: 0.75rem;
      display: flex;
      gap: 0.5rem;
    }
    .article-body h3 {
      font-family: 'Syne', sans-serif;
      font-weight: 700;
      font-size: 1.05rem;
      margin-bottom: 0.75rem;
      line-height: 1.35;
    }
    .article-body p {
      font-size: 0.85rem;
      color: var(--muted);
      margin-bottom: 1.5rem;
      line-height: 1.65;
    }
    .article-link {
      margin-top: auto;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--accent);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
      transition: gap 0.2s, opacity 0.2s;
    }
    .article-link:hover { gap: 0.6rem; opacity: 0.8; }

      /* ── CTA BANNER (paquetes) ── */
    .cta-banner {
        /* Margen: Arriba (8rem), Lados (6vw), Abajo (7rem) */
        margin: 8rem 6vw 7rem; 
        background: linear-gradient(135deg, rgba(0, 229, 255, 0.06), rgba(123, 97, 255, 0.06));
        border: 1px solid var(--border-accent);
        border-radius: 2rem;
        
        /* Padding: Superior (5rem), Lados (3.5rem), Inferior (3.5rem) */
        padding: 5rem 3.5rem 3.5rem; 
        
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 2rem;
        flex-wrap: wrap;
        position: relative;
        overflow: hidden;
    }

    .cta-banner::before {
        content: '';
        position: absolute;
        top: -50%; 
        right: -10%;
        width: 400px; 
        height: 400px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(0, 229, 255, 0.08), transparent 70%);
        pointer-events: none;
    }

    .cta-banner-text h3 {
        font-family: 'Syne', sans-serif;
        font-size: 1.6rem;
        font-weight: 800;
        margin-bottom: 0.5rem;
    }

    .cta-banner-text p { 
        color: var(--muted); 
        font-size: 0.95rem; 
    }

    /* ── CONTACT ── */
    #contact { background: var(--surface); border-top: 1px solid var(--border); }
    .contact-inner {
      max-width: 700px;
      margin: 0 auto;
      text-align: center;
    }
    .contact-inner .section-body { max-width: 100%; margin: 0 auto 3rem; }
    .contact-form {
      display: flex;
      flex-direction: column;
      gap: 1rem;
      text-align: left;
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 0.45rem;
    }
    .form-group label {
      font-size: 0.78rem;
      color: var(--muted);
      letter-spacing: 0.06em;
      text-transform: uppercase;
      font-weight: 600;
    }
    .form-group input,
    .form-group textarea,
    .form-group select {
      background: var(--surface2);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 0.85rem 1rem;
      color: var(--text);
      font-family: 'DM Sans', sans-serif;
      font-size: 0.9rem;
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s;
      width: 100%;
    }
    .form-group input:focus,
    .form-group textarea:focus,
    .form-group select:focus {
      border-color: rgba(0,229,255,0.4);
      box-shadow: 0 0 0 3px rgba(0,229,255,0.08);
    }
    .form-group textarea { resize: vertical; min-height: 130px; }
    .form-group select option { background: var(--surface2); }
    .contact-form .btn-primary {
      align-self: center;
      border: none;
      cursor: pointer;
      font-size: 0.95rem;
      padding: 1rem 2.5rem;
    }
    .contact-links {
      display: flex;
      justify-content: center;
      gap: 1.5rem;
      margin-top: 3rem;
      flex-wrap: wrap;
    }
    .contact-link {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.85rem;
      color: var(--muted);
      text-decoration: none;
      transition: color 0.2s;
    }
    .contact-link:hover { color: var(--accent); }

    /* ── FOOTER ── */
    footer {
      border-top: 1px solid var(--border);
      padding: 2.5rem 6vw;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      background: var(--bg);
    }
    footer .logo {
      font-family: 'Syne', sans-serif;
      font-weight: 800;
      color: var(--accent);
      font-size: 1rem;
    }
    footer p { font-size: 0.8rem; color: var(--muted); }
    footer nav-footer { display: flex; gap: 1.5rem; }
    .footer-links {
      display: flex;
      gap: 1.5rem;
      list-style: none;
    }
    .footer-links a {
      font-size: 0.8rem;
      color: var(--muted);
      text-decoration: none;
      transition: color 0.2s;
    }
    .footer-links a:hover { color: var(--accent); }

    /* ── ANIMATIONS ── */
    .fade-up {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .fade-up.visible { opacity: 1; transform: translateY(0); }

    /* ── DIVIDER ── */
    .divider {
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
      margin: 0 6vw;
      opacity: 0.6;
    }

    /* ── RESPONSIVE ── */
    @media (max-width: 900px) {
      #home { grid-template-columns: 1fr; padding-top: 8rem; text-align: center; gap: 3rem; }
      #home::after { display: none; }
      .hero-sub { margin: 0 auto 2.5rem; }
      .hero-actions { justify-content: center; }
      .hero-img { order: -1; }
      .hero-float-card { left: 50%; transform: translateX(-50%) !important; bottom: -1.5rem; animation: none; }
      .hero-stats { justify-content: center; }
      .about-grid { grid-template-columns: 1fr; gap: 3rem; }
      .services-grid { grid-template-columns: 1fr 1fr; }
      .projects-grid { grid-template-columns: 1fr; }
      .services-header { flex-direction: column; align-items: flex-start; }
      .articles-grid { grid-template-columns: 1fr 1fr; }
      .articles-cta-row { flex-direction: column; align-items: flex-start; }
      .cta-banner { flex-direction: column; text-align: center; }
    }
    @media (max-width: 640px) {
      nav { padding: 1rem 5vw; }
      .nav-links {
        display: none;
        flex-direction: column;
        gap: 1rem;
        background: var(--surface);
        position: absolute;
        top: 100%; left: 0; right: 0;
        padding: 1.5rem 5vw;
        border-bottom: 1px solid var(--border);
      }
      .nav-links.open { display: flex; }
      .hamburger { display: flex; }
      section { padding: 4.5rem 5vw; }
      .services-grid { grid-template-columns: 1fr; }
      .form-row { grid-template-columns: 1fr; }
      .about-stats { grid-template-columns: 1fr 1fr; }
      .hero-img-frame { width: 75%; }
      .articles-grid { grid-template-columns: 1fr; }
      .cta-banner { margin: 0 5vw 4rem; padding: 2.5rem; }
      .sector-salud-section { padding: 4.5rem 5vw; }
      .sector-salud-grid { grid-template-columns: 1fr 1fr; }
    }

    /* ── NAV: ocultar ítems secundarios en pantallas medias ── */
    @media (max-width: 1100px) {
      .nav-links li:nth-child(2),
      .nav-links li:nth-child(4) { display: none; }
    }

    /* ── CTA BANNER mobile ── */
    @media (max-width: 480px) {
      .cta-banner {
        flex-direction: column;
        text-align: center;
        gap: 1.25rem;
      }
      .cta-banner .btn-primary { width: 100%; text-align: center; }
    }

    /* ── SECTOR SALUD (index callout) ── */
    .sector-salud-section {
      padding: 5rem 6vw;
      background: var(--surface);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .sector-salud-inner { max-width: 1200px; margin: 0 auto; }
    .sector-salud-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      gap: 2rem;
      margin-bottom: 2.5rem;
      flex-wrap: wrap;
    }
    .btn-salud {
      background: linear-gradient(135deg, #00d68f, #00b87a);
      color: #080b10;
      font-family: 'DM Sans', sans-serif;
      font-weight: 700;
      font-size: 0.9rem;
      padding: 0.85rem 2rem;
      border-radius: 999px;
      text-decoration: none;
      transition: box-shadow 0.3s, transform 0.2s;
      display: inline-block;
      white-space: nowrap;
      flex-shrink: 0;
    }
    .btn-salud:hover { box-shadow: 0 0 30px rgba(0,214,143,0.4); transform: translateY(-2px); }
    .sector-salud-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1rem;
    }
    .salud-card {
      background: var(--surface2);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 1.5rem;
      transition: border-color 0.3s, transform 0.2s;
    }
    .salud-card:hover {
      border-color: rgba(0,214,143,0.3);
      transform: translateY(-3px);
    }
    .salud-icon { margin-bottom: 0.75rem; color: var(--accent); }
    .salud-icon svg { width: 28px; height: 28px; stroke: var(--accent); }
    .salud-name {
      font-family: 'Syne', sans-serif;
      font-weight: 700;
      font-size: 0.92rem;
      margin-bottom: 0.4rem;
      color: var(--text);
    }
    .salud-desc { font-size: 0.82rem; color: var(--muted); line-height: 1.6; }
    .salud-demo-btn {
      display: inline-block;
      margin-top: 0.85rem;
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--accent);
      text-decoration: none;
      border: 1px solid rgba(0,214,143,0.35);
      border-radius: 999px;
      padding: 0.35rem 0.9rem;
      transition: background 0.2s, color 0.2s, border-color 0.2s;
    }
    .salud-demo-btn:hover {
      background: var(--accent);
      color: #000;
      border-color: var(--accent);
    }
    @media (max-width: 900px) {
      .sector-salud-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 540px) {
      .sector-salud-grid { grid-template-columns: 1fr; }
      .sector-salud-header { flex-direction: column; align-items: flex-start; }
    }

    /* ── PROJECT IMAGE FALLBACK ── */
    .project-thumb { min-height: 180px; }
    .project-thumb.no-img {
      background: linear-gradient(135deg, var(--surface2), var(--surface3));
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .project-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }

    /* ── LUCIDE icon sizing ── */
    .plan-icon svg, .cat-icon svg, .addon-icon svg, .article-thumb svg,
    .salud-icon svg, .plus-icon svg, .service-icon svg, .hero-float-icon svg,
    .contact-link svg, .case-type svg {
      width: 1.5em; height: 1.5em;
      stroke: currentColor;
      vertical-align: middle;
    }
    .check svg { width: 10px; height: 10px; color: var(--accent); stroke-width: 3; }
    .x-mark svg { width: 10px; height: 10px; color: var(--muted); stroke-width: 3; }
    .popular-badge svg { width: 14px; height: 14px; vertical-align: middle; margin-right: 3px; }
    .hero-badge svg { width: 16px; height: 16px; vertical-align: middle; }