*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    /* ── Variables ── */
    :root {
      --green-100: #9FE1CB;
      --green-300: #5FD8A6;
      --green-400: #22B378;
      --green-600: #189064;
      --green-800: #0B4A3B;
      --black:     #0A0B0A;
      --black-2:   #141613;
      --black-3:   #1D201C;
      --line:      rgba(255,255,255,.10);
      --line-soft: rgba(255,255,255,.06);
      --white:     #F5F5F2;
      --gray-400:  #9C9C94;
      --gray-600:  #77776F;
      --plate:     #EEECE6;
      --radius-md: 8px;
      --radius-lg: 14px;
      --radius-xl: 20px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,.4);
      --shadow-md: 0 16px 44px rgba(0,0,0,.55);
      --glow: 0 0 0 1px rgba(34,179,120,.35), 0 10px 30px rgba(34,179,120,.18);
    }

    /* ── Base ── */
    body {
      font-family: 'DM Sans', sans-serif;
      background-color: var(--black);
      background-image:
        radial-gradient(circle, rgba(255,255,255,.05) 1px, transparent 1px);
      background-size: 22px 22px;
      color: var(--white);
      min-height: 100vh;
    }

    /* ── Navbar ── */
    nav {
      background: rgba(10,11,10,.9);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--line);
      padding: 0 2rem;
      height: 60px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: sticky;
      top: 0;
      z-index: 50;
      gap: 1rem;
    }
    .nav-logo {
      font-family: 'Syne', sans-serif;
      font-weight: 700;
      font-size: 1.1rem;
      color: var(--white);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .nav-links {
      display: flex;
      gap: 1.5rem;
      list-style: none;
      margin: 0 auto 0 2.5rem;
    }
    .nav-links a {
      font-size: 14px;
      color: var(--gray-400);
      text-decoration: none;
      transition: color .2s;
      white-space: nowrap;
    }
    .nav-links a:hover { color: var(--white); }
    .nav-cta {
      background: var(--green-400);
      color: var(--black);
      font-size: 13.5px;
      font-weight: 700;
      text-decoration: none;
      padding: .5rem 1.15rem;
      border-radius: var(--radius-md);
      transition: background .2s;
      white-space: nowrap;
    }
    .nav-cta:hover { background: var(--green-300); }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 22px;
      color: var(--white);
      cursor: pointer;
      padding: 4px;
    }

    /* ── Page wrapper ── */
    .page { max-width: 1100px; margin: 0 auto; padding: 2.5rem 1.5rem 4rem; }

    /* ── Hero ── */
    .hero {
      position: relative;
      text-align: center;
      padding: 4.5rem 1.5rem 4rem;
      background: var(--black);
      overflow: hidden;
    }
    .hero-video {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: 0;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(10,11,10,.92) 0%, rgba(11,74,59,.72) 100%);
      z-index: 1;
    }
    @media (prefers-reduced-motion: reduce) {
      .hero-video { display: none; }
    }
    .hero-inner { position: relative; z-index: 2; max-width: 720px; margin: 0 auto; }
    .hero-tag {
      display: inline-block;
      background: rgba(255,255,255,.1);
      border: 1px solid var(--line);
      color: var(--white);
      font-size: 11px;
      letter-spacing: .12em;
      text-transform: uppercase;
      padding: 5px 16px;
      border-radius: 20px;
      margin-bottom: 1.5rem;
      font-weight: 500;
    }
    .hero-rotator {
      position: relative;
      min-height: clamp(96px, 20vw, 150px);
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .hero-slide {
      display: none;
      font-family: 'Syne', sans-serif;
      font-size: clamp(1.9rem, 4.6vw, 3rem);
      font-weight: 800;
      line-height: 1.15;
      letter-spacing: -.01em;
      color: var(--white);
    }
    .hero-slide.active { display: block; animation: heroIn .5s ease; }
    @keyframes heroIn {
      from { opacity: 0; transform: translateY(10px); }
      to   { opacity: 1; transform: translateY(0); }
    }
    .hero-slide span { color: var(--green-300); }
    .hero p {
      color: rgba(245,245,242,.75);
      font-size: 16px;
      max-width: 520px;
      margin: 1rem auto 0;
      line-height: 1.6;
    }
    .hero-actions {
      display: flex;
      gap: 1rem;
      justify-content: center;
      flex-wrap: wrap;
      margin-top: 2rem;
    }
    .hero-btn { text-decoration: none; }
    .hero-btn-main {
      font-size: 17px;
      padding: 1.1rem 2.5rem;
    }
    .hero-dots { display: flex; justify-content: center; gap: 8px; margin-top: 2.25rem; }
    .bc-dot {
      width: 8px; height: 8px; border-radius: 50%;
      border: none; cursor: pointer; padding: 0;
      transition: all .25s;
    }
    .hero-dots .bc-dot { background: rgba(255,255,255,.25); }
    .hero-dots .bc-dot.active { background: var(--green-300); width: 22px; border-radius: 4px; }

    /* ── Stats Strip ── */
    .stats-strip {
      display: flex;
      align-items: center;
      justify-content: space-around;
      background: var(--black-2);
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      padding: 1.75rem 2rem;
      margin-bottom: 4rem;
    }
    .stat-item { text-align: center; }
    .stat-val {
      font-family: 'Syne', sans-serif;
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--green-300);
      line-height: 1;
      margin-bottom: .35rem;
    }
    .stat-lbl { font-size: 12px; color: var(--gray-400); }
    .stat-div { width: 1px; height: 40px; background: var(--line); }

    /* ── Section intro / tags ── */
    .systems-tag {
      display: inline-block;
      background: rgba(34,179,120,.12);
      border: 1px solid rgba(34,179,120,.3);
      color: var(--green-300);
      font-size: 11px;
      letter-spacing: .12em;
      text-transform: uppercase;
      padding: 5px 16px;
      border-radius: 20px;
      margin-bottom: .85rem;
      font-weight: 500;
    }
    .systems-intro { text-align: center; margin-bottom: 2.5rem; }
    .systems-intro h2 {
      font-family: 'Syne', sans-serif;
      font-size: clamp(1.5rem, 3.5vw, 2.2rem);
      font-weight: 700;
      margin-bottom: .5rem;
      color: var(--white);
    }
    .systems-intro p {
      color: var(--gray-400);
      font-size: 15px;
      max-width: 480px;
      margin: 0 auto;
      line-height: 1.6;
    }

    /* ── Big statement heading (used by .statement and .systems-section) ── */
    .statement-heading {
      font-family: 'Syne', sans-serif;
      font-weight: 800;
      letter-spacing: -.01em;
      line-height: 1.08;
      font-size: clamp(1.9rem, 4.6vw, 3.1rem);
      color: var(--white);
    }
    .statement-heading em {
      font-style: normal;
      color: var(--green-300);
    }

    /* ── Statement / Sin kits section ── */
    .statement {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 3rem;
      align-items: center;
      margin-bottom: 4.5rem;
    }
    .statement-content p {
      color: var(--gray-400);
      font-size: 15.5px;
      line-height: 1.75;
      margin: 1.25rem 0;
    }
    .statement-list { list-style: none; display: flex; flex-direction: column; gap: .75rem; margin: 1.5rem 0 1.75rem; }
    .statement-list li {
      display: flex; align-items: flex-start; gap: 10px;
      font-size: 14.5px; color: var(--white); line-height: 1.5;
    }
    .statement-list li i { color: var(--green-400); font-size: 18px; flex-shrink: 0; margin-top: 1px; }
    .statement-media {
      border-radius: var(--radius-xl);
      overflow: hidden;
      border: 1px solid var(--line);
      background: var(--black-2);
      aspect-ratio: 4/5;
      position: relative;
    }
    .statement-media video {
      width: 100%; height: 100%; object-fit: cover; display: block;
    }
    .statement-media::after {
      content: '';
      position: absolute; inset: 0;
      background: linear-gradient(0deg, rgba(10,11,10,.55) 0%, transparent 40%);
      pointer-events: none;
    }

    /* ── Proceso ── */
    .process { margin-bottom: 4.5rem; }
    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.25rem;
    }
    .process-step {
      position: relative;
      background: var(--black-2);
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      padding: 1.75rem 1.5rem;
      transition: border-color .25s, transform .25s;
    }
    .process-step:hover { border-color: rgba(34,179,120,.4); transform: translateY(-3px); }
    .process-num {
      position: absolute;
      top: 1.25rem; right: 1.5rem;
      font-family: 'Syne', sans-serif;
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--line);
    }
    .process-step h3 {
      font-family: 'Syne', sans-serif;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--white);
      margin-bottom: .4rem;
    }
    .process-step p { font-size: 13.5px; color: var(--gray-400); line-height: 1.55; }

    /* ── Shared icon box ── */
    .system-icon {
      width: 46px;
      height: 46px;
      background: rgba(34,179,120,.12);
      border: 1px solid rgba(34,179,120,.25);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1rem;
    }
    .system-icon i { font-size: 22px; color: var(--green-300); }

    /* ── Por qué elegirnos ── */
    .why { margin-bottom: 4.5rem; }
    .why-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.25rem;
    }
    .why-item {
      background: var(--black-2);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 1.6rem;
      transition: border-color .25s;
    }
    .why-item:hover { border-color: rgba(34,179,120,.4); }
    .why-item h3 {
      font-family: 'Syne', sans-serif;
      font-size: 1rem;
      font-weight: 700;
      color: var(--white);
      margin-bottom: .35rem;
    }
    .why-item p { font-size: 13.5px; color: var(--gray-400); line-height: 1.55; }

    /* ── Systems Section (Off-Grid / Híbrido) ── */
    .systems-section { margin-bottom: 4.5rem; }
    .systems-section .systems-intro { max-width: 640px; margin-left: auto; margin-right: auto; }
    .systems-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
    }
    @media (max-width: 780px) {
      .systems-grid { grid-template-columns: 1fr; }
    }
    .system-card {
      background: var(--black-2);
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      overflow: hidden;
      transition: box-shadow .25s, border-color .25s, transform .25s;
    }
    .system-card:hover {
      border-color: rgba(34,179,120,.45);
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .system-card--highlight { border-color: rgba(34,179,120,.35); }
    .system-media {
      background: var(--plate);
      height: 220px;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 1.5rem;
      position: relative;
    }
    .system-media img { max-height: 100%; max-width: 100%; object-fit: contain; }
    .system-media-label {
      position: absolute;
      top: 1rem; left: 1rem;
      font-family: 'Syne', sans-serif;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: .08em;
      text-transform: uppercase;
      color: var(--black);
      background: var(--green-300);
      padding: 5px 12px;
      border-radius: 20px;
    }
    .system-body { padding: 1.75rem; }
    .system-card h3 {
      font-family: 'Syne', sans-serif;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--white);
      margin-bottom: .4rem;
    }
    .system-desc {
      font-size: 13.5px;
      color: var(--gray-400);
      margin-bottom: 1.25rem;
      line-height: 1.55;
    }
    .system-benefits {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: .6rem;
    }
    .system-benefits li {
      display: flex;
      align-items: flex-start;
      gap: 9px;
      font-size: 13.5px;
      color: var(--white);
      line-height: 1.5;
    }
    .system-benefits li i {
      color: var(--green-400);
      font-size: 17px;
      flex-shrink: 0;
      margin-top: 1px;
    }

    /* ── Filters ── */
    .filter-bar {
      display: flex;
      gap: 8px;
      justify-content: center;
      flex-wrap: wrap;
      margin-bottom: 2.25rem;
    }
    .filter-btn {
      background: var(--black-2);
      border: 1px solid var(--line);
      border-radius: 20px;
      padding: 8px 20px;
      font-size: 13.5px;
      cursor: pointer;
      color: var(--gray-400);
      font-family: 'DM Sans', sans-serif;
      transition: all .2s;
    }
    .filter-btn:hover { border-color: var(--green-400); color: var(--white); }
    .filter-btn.active {
      background: var(--green-400);
      border-color: var(--green-400);
      color: var(--black);
      font-weight: 700;
    }

    /* ── Product Grid ── */
    .grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 1.25rem;
    }

    /* ── Card image ── */
    .card-img-wrap {
      width: 100%;
      height: 160px;
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 1rem;
      background: var(--plate);
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .card-img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      transition: transform .3s;
    }
    .card:hover .card-img { transform: scale(1.05); }

    /* ── Card ── */
    .card {
      background: var(--black-2);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 1.4rem;
      cursor: pointer;
      transition: all .25s;
      position: relative;
      overflow: hidden;
    }
    .card:hover {
      border-color: var(--green-400);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .card:hover .card-arrow { opacity: 1; transform: translateX(0); }

    .card-cat {
      font-size: 11px;
      text-transform: uppercase;
      letter-spacing: .1em;
      color: var(--green-300);
      font-weight: 500;
      margin-bottom: .8rem;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .cat-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green-400); flex-shrink: 0; }

    .card h3 {
      font-family: 'Syne', sans-serif;
      font-size: 15.5px;
      font-weight: 600;
      color: var(--white);
      line-height: 1.3;
      margin-bottom: .4rem;
    }
    .card-model { font-size: 12px; color: var(--gray-400); margin-bottom: 1rem; }

    .card-highlight {
      background: var(--black-3);
      border-radius: var(--radius-md);
      padding: .65rem .85rem;
      margin-bottom: .85rem;
      border: 1px solid var(--line);
    }
    .card-highlight .val {
      font-family: 'Syne', sans-serif;
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--white);
    }
    .card-highlight .lbl { font-size: 11px; color: var(--gray-400); margin-top: 2px; }

    .card-badge {
      display: inline-block;
      background: rgba(34,179,120,.12);
      color: var(--green-300);
      font-size: 11px;
      padding: 3px 10px;
      border-radius: 12px;
      font-weight: 500;
    }

    .card-arrow {
      position: absolute;
      bottom: 1.1rem;
      right: 1.1rem;
      width: 30px;
      height: 30px;
      background: var(--green-400);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      opacity: 0;
      transform: translateX(8px);
      transition: all .25s;
    }
    .card-arrow i { color: var(--black); font-size: 14px; }

    /* ── Overlay / Modal ── */
    .overlay {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,.7);
      z-index: 200;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 1rem;
      opacity: 0;
      pointer-events: none;
      transition: opacity .25s;
    }
    .overlay.open { opacity: 1; pointer-events: all; }

    .modal {
      background: var(--black-2);
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      max-width: 560px;
      width: 100%;
      max-height: 88vh;
      overflow-y: auto;
      padding: 2rem;
      position: relative;
      transform: translateY(24px);
      transition: transform .28s;
      box-shadow: var(--shadow-md);
    }
    .overlay.open .modal { transform: translateY(0); }

    .modal-close {
      position: absolute;
      top: 1rem;
      right: 1rem;
      background: var(--black-3);
      border: 1px solid var(--line);
      width: 34px;
      height: 34px;
      border-radius: 50%;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: background .2s;
    }
    .modal-close:hover { background: rgba(255,255,255,.12); }
    .modal-close i { font-size: 16px; color: var(--white); }

    /* ── Modal image ── */
    .modal-img-wrap {
      width: 100%;
      height: 220px;
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 1.25rem;
      background: var(--plate);
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--line);
    }
    .modal-img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    .modal-cat { font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--green-300); font-weight: 500; margin-bottom: .5rem; }
    .modal h2 { font-family: 'Syne', sans-serif; font-size: 1.5rem; font-weight: 700; color: var(--white); margin-bottom: .3rem; line-height: 1.2; }
    .modal-model { font-size: 13px; color: var(--gray-400); margin-bottom: 1.5rem; }

    .specs-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      margin-bottom: 1.5rem;
    }
    .spec-card {
      background: var(--black-3);
      border-radius: var(--radius-md);
      padding: .8rem 1rem;
      border: 1px solid var(--line);
    }
    .spec-card .sv { font-weight: 600; font-size: 15px; color: var(--white); font-family: 'Syne', sans-serif; }
    .spec-card .sk { font-size: 12px; color: var(--gray-400); margin-top: 3px; }

    .features-title { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--gray-400); font-weight: 500; margin-bottom: .75rem; }
    .spec-list { list-style: none; }
    .spec-list li {
      padding: 9px 0;
      border-bottom: 1px solid var(--line);
      font-size: 14px;
      color: var(--white);
      display: flex;
      gap: 10px;
      line-height: 1.5;
    }
    .spec-list li:last-child { border-bottom: none; }
    .spec-list li i { color: var(--green-400); font-size: 16px; margin-top: 2px; flex-shrink: 0; }

    .modal-footer {
      margin-top: 1.75rem;
      padding-top: 1.25rem;
      border-top: 1px solid var(--line);
      display: flex;
      gap: .75rem;
    }
    .btn-primary {
      flex: 1;
      background: var(--green-400);
      color: var(--black);
      border: none;
      border-radius: var(--radius-md);
      padding: .75rem 1rem;
      font-family: 'DM Sans', sans-serif;
      font-size: 14px;
      font-weight: 700;
      cursor: pointer;
      transition: background .2s;
    }
    .btn-primary:hover { background: var(--green-300); }
    .btn-secondary {
      flex: 1;
      background: transparent;
      color: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      padding: .75rem 1rem;
      font-family: 'DM Sans', sans-serif;
      font-size: 14px;
      cursor: pointer;
      transition: all .2s;
    }
    .btn-secondary:hover { border-color: var(--green-400); color: var(--green-300); }

    /* ── Buttons (hero / calc) ── */
    .cta-btn-primary {
      background: var(--green-400); color: var(--black);
      border: none; border-radius: var(--radius-md);
      padding: .85rem 1.75rem;
      font-family: 'DM Sans', sans-serif; font-size: 15px; font-weight: 700;
      cursor: pointer; transition: background .2s, transform .2s;
      display: flex; align-items: center; gap: 8px;
      text-decoration: none;
    }
    .cta-btn-primary:hover { background: var(--green-300); }
    .cta-btn-secondary {
      background: transparent; color: var(--white);
      border: 1px solid var(--line); border-radius: var(--radius-md);
      padding: .85rem 1.75rem;
      font-family: 'DM Sans', sans-serif; font-size: 15px;
      cursor: pointer; transition: all .2s;
      display: flex; align-items: center; gap: 8px;
      text-decoration: none;
    }
    .cta-btn-secondary:hover { border-color: rgba(255,255,255,.5); background: rgba(255,255,255,.06); }

    /* ── Calculadora de ahorro ── */
    .calc { margin-bottom: 4.5rem; }
    .calc-card {
      max-width: 720px;
      margin: 0 auto;
      background: linear-gradient(160deg, var(--black-2) 0%, var(--black-3) 100%);
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      padding: 2.5rem 2.25rem;
    }
    .calc-label { font-size: 13px; color: var(--gray-400); margin-bottom: .5rem; }
    .calc-amount {
      font-family: 'Syne', sans-serif;
      font-size: clamp(2.2rem, 6vw, 3.2rem);
      font-weight: 800;
      color: var(--green-300);
      line-height: 1;
      margin-bottom: 1.5rem;
    }
    .calc-slider {
      -webkit-appearance: none;
      appearance: none;
      width: 100%;
      height: 6px;
      border-radius: 3px;
      background: var(--line);
      outline: none;
      margin-bottom: .6rem;
    }
    .calc-slider::-webkit-slider-thumb {
      -webkit-appearance: none;
      width: 24px; height: 24px;
      border-radius: 50%;
      background: var(--green-400);
      border: 4px solid var(--black-2);
      box-shadow: 0 0 0 2px var(--green-400);
      cursor: pointer;
    }
    .calc-slider::-moz-range-thumb {
      width: 16px; height: 16px;
      border-radius: 50%;
      background: var(--green-400);
      border: 4px solid var(--black-2);
      box-shadow: 0 0 0 2px var(--green-400);
      cursor: pointer;
    }
    .calc-range-labels {
      display: flex; justify-content: space-between;
      font-size: 12px; color: var(--gray-600);
      margin-bottom: 2rem;
    }
    .calc-message {
      font-size: 15.5px;
      color: var(--white);
      line-height: 1.65;
      background: rgba(34,179,120,.08);
      border: 1px solid rgba(34,179,120,.25);
      border-radius: var(--radius-lg);
      padding: 1.1rem 1.25rem;
      margin-bottom: 1.75rem;
      min-height: 3.6em;
      display: flex;
      align-items: center;
    }
    .calc-cta { width: 100%; justify-content: center; font-size: 15.5px; }
    .calc-note { text-align: center; font-size: 11.5px; color: var(--gray-600); margin-top: 1rem; }

    /* ── FAQ ── */
    .faq { margin-bottom: 4.5rem; }
    .faq-list {
      max-width: 720px;
      margin: 0 auto;
      background: var(--black-2);
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      overflow: hidden;
    }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item:last-child { border-bottom: none; }
    .faq-q {
      width: 100%;
      background: none;
      border: none;
      text-align: left;
      padding: 1.15rem 1.5rem;
      font-family: 'DM Sans', sans-serif;
      font-size: 14.5px;
      font-weight: 500;
      color: var(--white);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
    }
    .faq-q i { color: var(--gray-400); transition: transform .25s; flex-shrink: 0; }
    .faq-item.open .faq-q i { transform: rotate(180deg); color: var(--green-400); }
    .faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
    .faq-item.open .faq-a { max-height: 220px; }
    .faq-a p { padding: 0 1.5rem 1.15rem; font-size: 13.5px; color: var(--gray-400); line-height: 1.6; }

    /* ── Empty state ── */
    .empty { display: none; text-align: center; padding: 4rem; color: var(--gray-400); }
    .empty i { font-size: 48px; color: var(--line); display: block; margin-bottom: 1rem; }

    /* ── Footer ── */
    .site-footer {
      background: var(--black-2);
      color: var(--gray-400);
      margin-top: 3rem;
      padding: 3.5rem 1.5rem 0;
      border-top: 1px solid var(--line);
    }
    .footer-grid {
      max-width: 1100px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 2rem;
      padding-bottom: 2.5rem;
    }
    .footer-col { display: flex; flex-direction: column; gap: .7rem; }
    .footer-logo { color: var(--white); margin-bottom: .4rem; }
    .footer-col > p { font-size: 13px; color: var(--gray-400); line-height: 1.6; }
    .footer-col h4 {
      font-family: 'Syne', sans-serif;
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: .06em;
      color: var(--white);
      margin-bottom: .3rem;
    }
    .footer-col a, .footer-col span {
      font-size: 13.5px;
      color: var(--gray-400);
      text-decoration: none;
      transition: color .2s;
      display: flex;
      align-items: center;
      gap: 7px;
    }
    .footer-col a:hover { color: var(--green-300); }
    .footer-social { display: flex; gap: .6rem; margin-top: .4rem; }
    .footer-social a {
      width: 34px; height: 34px;
      background: var(--black-3);
      border: 1px solid var(--line);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-size: 15px;
    }
    .footer-social a:hover { background: var(--green-400); border-color: var(--green-400); color: var(--black); }
    .footer-bottom {
      max-width: 1100px;
      margin: 0 auto;
      border-top: 1px solid var(--line);
      padding: 1.5rem 0;
      text-align: center;
      font-size: 12.5px;
      color: var(--gray-600);
    }
    .footer-bottom strong { color: var(--green-300); }

    /* ── WhatsApp flotante ── */
    .whatsapp-fab {
      position: fixed;
      bottom: 1.5rem;
      right: 1.5rem;
      width: 56px; height: 56px;
      background: #25D366;
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      color: var(--white);
      font-size: 28px;
      box-shadow: 0 6px 20px rgba(0,0,0,.5);
      z-index: 100;
      transition: transform .2s;
      text-decoration: none;
    }
    .whatsapp-fab:hover { transform: scale(1.08); }

    /* ── Responsive ── */
    @media (max-width: 900px) {
      .statement { grid-template-columns: 1fr; }
      .statement-media { order: -1; aspect-ratio: 16/9; }
      .process-grid { grid-template-columns: 1fr 1fr; }
      .why-grid { grid-template-columns: 1fr 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 780px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 60px; left: 0; right: 0;
        background: var(--black-2);
        border-bottom: 1px solid var(--line);
        flex-direction: column;
        gap: 0;
        margin: 0;
        padding: .5rem 0;
        box-shadow: var(--shadow-md);
      }
      .nav-links.open { display: flex; }
      .nav-links a { padding: .85rem 2rem; width: 100%; }
      .nav-links a:hover { background: var(--black-3); }
      .nav-cta { display: none; }
      .nav-toggle { display: block; }
    }

    @media (max-width: 600px) {
      .specs-grid { grid-template-columns: 1fr 1fr; }
      .modal-footer { flex-direction: column; }
      .stats-strip { flex-wrap: wrap; gap: 1.5rem 2rem; }
      .stat-div { display: none; }
      .stat-item { flex: 0 0 calc(50% - 1rem); }
      .process-grid { grid-template-columns: 1fr; }
      .why-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .calc-card { padding: 1.75rem 1.5rem; }
      .whatsapp-fab { width: 50px; height: 50px; font-size: 24px; bottom: 1rem; right: 1rem; }
    }