/* ── RESET & BASE ── */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root {
      --red:       #D41217;
      --red-dark:  #9e0d10;
      --red-light: #ff3b40;
      --navy:      #0d1b2e;
      --navy-mid:  #152540;
      --navy-light:#1e3558;
      --silver:    #c8d4e2;
      --white:     #f5f8fc;
      --offwhite:  #eef2f7;
      --text:      #1a2840;
      --muted:     #5a708a;
      --gold:      #f0a500;
      --font-head: 'Barlow Condensed', sans-serif;
      --font-body: 'Barlow', sans-serif;
      --radius:    6px;
      --shadow:    0 4px 24px rgba(13,27,46,.18);
      --transition: .3s cubic-bezier(.4,0,.2,1);
    }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-body);
      background: var(--white);
      color: var(--text);
      line-height: 1.6;
      overflow-x: hidden;
    }

    /* ── FLOATING BUTTONS ── */
    .float-btns {
      position: fixed; bottom: 28px; right: 24px;
      display: flex; flex-direction: column; gap: 12px; z-index: 9999;
    }
    .float-btn {
      width: 58px; height: 58px; border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      text-decoration: none; box-shadow: 0 6px 20px rgba(0,0,0,.3);
      transition: var(--transition); font-size: 26px;
    }
    .float-btn:hover { transform: scale(1.13); }
    .float-wa  { background: #25D366; }
    .float-tel { background: var(--red); }

    /* ── TOP BAR ── */
    .topbar {
      background: var(--navy);
      color: var(--silver);
      font-size: .8rem;
      display: flex; justify-content: space-between; align-items: center;
      padding: 7px 5%;
      letter-spacing: .04em;
    }
    .topbar a { color: var(--gold); text-decoration: none; font-weight: 600; }
    .topbar .badge-24 {
      background: var(--red); color: #fff;
      padding: 2px 8px; border-radius: 3px;
      font-weight: 700; font-size: .75rem; margin-left: 8px;
    }

    /* ── NAV ── */
    nav {
      position: sticky; top: 0; z-index: 1000;
      background: var(--navy-mid);
      box-shadow: 0 2px 16px rgba(0,0,0,.35);
    }
    .nav-inner {
      max-width: 1280px; margin: auto;
      display: flex; align-items: center; justify-content: space-between;
      padding: 0 5%;
    }
    .logo {
      font-family: var(--font-head);
      font-weight: 900; font-size: 1.5rem;
      color: #fff; text-decoration: none;
      letter-spacing: .03em;
      display: flex; align-items: center; gap: 10px;
      padding: 14px 0;
    }
    .logo span { color: var(--red); }
    .logo-icon {
      width: 36px; height: 36px; background: var(--red);
      border-radius: 50%; display: flex; align-items: center;
      justify-content: center; font-size: 18px;
    }
    .nav-links {
      display: flex; list-style: none; gap: 2px;
    }
    .nav-links a {
      color: var(--silver); text-decoration: none;
      font-family: var(--font-head); font-weight: 600;
      font-size: .95rem; letter-spacing: .06em; text-transform: uppercase;
      padding: 20px 12px; display: block;
      transition: var(--transition); position: relative;
    }
    .nav-links a::after {
      content: ''; position: absolute; bottom: 0; left: 12px; right: 12px;
      height: 3px; background: var(--red);
      transform: scaleX(0); transition: var(--transition);
    }
    .nav-links a:hover { color: #fff; }
    .nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
    .nav-links a.active { color: #fff; }
    .hamburger {
      display: none; flex-direction: column; gap: 5px;
      background: none; border: none; cursor: pointer; padding: 10px;
    }
    .hamburger span {
      display: block; width: 26px; height: 2px;
      background: #fff; border-radius: 2px;
      transition: var(--transition);
    }
    .mobile-menu {
      display: none; background: var(--navy);
      padding: 12px 5% 20px;
    }
    .mobile-menu.open { display: block; }
    .mobile-menu a {
      display: block; color: var(--silver); text-decoration: none;
      font-family: var(--font-head); font-weight: 600;
      font-size: 1.1rem; letter-spacing: .06em; text-transform: uppercase;
      padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.07);
    }
    .mobile-menu a:hover { color: var(--red); }

    /* ── HERO ── */
    /* ── HERO INDEX — mirrors .app-hero pattern ── */
    #inicio { scroll-margin-top: 64px; }
    /* inner grid: same max-width + 2-col pattern as .app-hero-inner */
    .hero-inner {
      position: relative; z-index: 2;
      max-width: 1280px; margin: 0 auto;
      display: grid; grid-template-columns: 1fr 1fr;
      align-items: center;
      min-height: 92vh;
      padding: 0 5%;
    }
    .hero-content {
      padding: 60px 5% 60px 0;
    }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      background: rgba(212,18,23,.15); border: 1px solid rgba(212,18,23,.4);
      color: var(--red-light); padding: 6px 14px; border-radius: 20px;
      font-size: .8rem; font-weight: 600; letter-spacing: .08em;
      text-transform: uppercase; margin-bottom: 24px;
    }
    .hero-badge::before { content: '●'; font-size: .5rem; animation: pulse 2s infinite; }
    @keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }
    .hero-title {
      font-family: var(--font-head);
      font-weight: 900; font-size: clamp(2.8rem, 5vw, 5rem);
      color: #fff; line-height: 1.0; letter-spacing: .01em;
      margin-bottom: 10px;
    }
    .hero-title em { color: var(--red); font-style: normal; }
    .hero-sub {
      font-family: var(--font-head);
      font-weight: 700; font-size: clamp(1.2rem, 2.2vw, 1.8rem);
      color: var(--silver); letter-spacing: .04em; margin-bottom: 28px;
    }
    .hero-desc {
      color: rgba(200,212,226,.8); font-size: 1rem;
      max-width: 480px; margin-bottom: 36px; line-height: 1.7;
    }
    .hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
    .btn-primary {
      background: var(--red); color: #fff;
      font-family: var(--font-head); font-weight: 700;
      font-size: 1.1rem; letter-spacing: .06em; text-transform: uppercase;
      padding: 14px 30px; border-radius: var(--radius);
      text-decoration: none; border: none; cursor: pointer;
      transition: var(--transition); display: inline-flex; align-items: center; gap: 8px;
      box-shadow: 0 4px 20px rgba(212,18,23,.4);
    }
    .btn-primary:hover { background: var(--red-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(212,18,23,.5); }
    .btn-secondary {
      background: transparent; color: #fff;
      border: 2px solid rgba(255,255,255,.3);
      font-family: var(--font-head); font-weight: 700;
      font-size: 1.1rem; letter-spacing: .06em; text-transform: uppercase;
      padding: 14px 30px; border-radius: var(--radius);
      text-decoration: none; transition: var(--transition);
      display: inline-flex; align-items: center; gap: 8px;
    }
    .btn-secondary:hover { border-color: #fff; background: rgba(255,255,255,.07); }
    .hero-stats {
      display: flex; gap: 32px; flex-wrap: wrap;
    }
    .hero-stat { }
    .hero-stat strong {
      display: block; font-family: var(--font-head);
      font-size: 2rem; font-weight: 900; color: var(--red);
      line-height: 1;
    }
    .hero-stat span { color: var(--silver); font-size: .85rem; }
    .hero-visual {
      position: relative; z-index: 2;
      display: flex; flex-direction: column; align-items: center;
      justify-content: center; padding: 60px 7% 60px 5%;
    }
    .hero-card-wrap {
      background: rgba(255,255,255,.05);
      border: 1px solid rgba(255,255,255,.1);
      border-radius: 12px; padding: 32px;
      backdrop-filter: blur(12px);
      width: 100%; max-width: 400px;
      box-shadow: 0 20px 60px rgba(0,0,0,.4);
    }
    .hero-card-title {
      font-family: var(--font-head); font-weight: 800;
      font-size: 1.1rem; color: var(--silver);
      letter-spacing: .1em; text-transform: uppercase; margin-bottom: 20px;
    }
    .hero-card-phone {
      font-family: var(--font-head); font-weight: 900;
      font-size: 2.2rem; color: #fff; letter-spacing: .02em;
      margin-bottom: 6px; display: flex; align-items: center; gap: 10px;
    }
    .hero-card-phone span { color: var(--red); }
    .hero-card-hours {
      color: var(--gold); font-weight: 600; font-size: .9rem;
      margin-bottom: 20px;
    }
    .hero-wa {
      display: flex; align-items: center; gap: 10px;
      background: rgba(37,211,102,.15); border: 1px solid rgba(37,211,102,.3);
      border-radius: 8px; padding: 12px 16px; margin-bottom: 20px;
      text-decoration: none; transition: var(--transition);
    }
    .hero-wa:hover { background: rgba(37,211,102,.25); }
    .hero-wa-icon { font-size: 1.4rem; }
    .hero-wa-text strong { display: block; color: #fff; font-weight: 600; font-size: .95rem; }
    .hero-wa-text span { color: #25D366; font-size: .85rem; }
    .free-badge {
      background: linear-gradient(135deg, #f0a500, #e07800);
      border-radius: 8px; padding: 14px 18px;
      display: flex; align-items: center; gap: 12px;
    }
    .free-badge-icon { font-size: 1.8rem; }
    .free-badge-text strong { display: block; color: #fff; font-weight: 800; font-size: 1rem; font-family: var(--font-head); letter-spacing: .04em; }
    .free-badge-text span { color: rgba(255,255,255,.85); font-size: .82rem; }

    /* ── SECTION COMMON ── */
    section { scroll-margin-top: 64px; }
    .section-head {
      text-align: center; margin-bottom: 56px;
    }
    .section-label {
      display: inline-block;
      font-family: var(--font-head); font-weight: 700; font-size: .78rem;
      letter-spacing: .14em; text-transform: uppercase; color: var(--red);
      margin-bottom: 10px;
    }
    .section-title {
      font-family: var(--font-head); font-weight: 900;
      font-size: clamp(2rem, 4vw, 3rem); color: var(--navy); line-height: 1.05;
    }
    .section-title em { color: var(--red); font-style: normal; }
    .section-desc {
      max-width: 640px; margin: 14px auto 0;
      color: var(--muted); font-size: .98rem; line-height: 1.7;
    }
    .container { max-width: 1200px; margin: auto; padding: 80px 5%; }
    .container-sm { max-width: 900px; margin: auto; padding: 80px 5%; }

    /* ── SERVICES STRIP ── */
    .services-strip {
      background: var(--navy-mid);
      padding: 18px 5%;
    }
    .services-strip-inner {
      max-width: 1200px; margin: auto;
      display: flex; gap: 8px; flex-wrap: wrap; justify-content: center;
    }
    .strip-chip {
      background: rgba(255,255,255,.07); color: var(--silver);
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 4px; padding: 6px 14px;
      font-family: var(--font-head); font-weight: 600;
      font-size: .85rem; letter-spacing: .05em; text-transform: uppercase;
      text-decoration: none; transition: var(--transition);
    }
    .strip-chip:hover { background: var(--red); color: #fff; border-color: var(--red); }

    /* ── APPLIANCE PAGE ── */
    .app-hero {
      background: var(--navy);
      padding: 80px 5%;
      position: relative; overflow: hidden;
    }
    .app-hero-inner {
      max-width: 1200px; margin: auto;
      display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
      align-items: center; position: relative; z-index: 2;
    }
    .app-hero-bg {
      position: absolute; inset: 0;
      background: radial-gradient(ellipse 50% 80% at 80% 50%, rgba(212,18,23,.15) 0%, transparent 60%);
    }
    .app-hero-label {
      font-family: var(--font-head); font-weight: 700; font-size: .78rem;
      letter-spacing: .14em; text-transform: uppercase; color: var(--red);
      margin-bottom: 12px;
    }
    .app-hero-title {
      font-family: var(--font-head); font-weight: 900;
      font-size: clamp(2.2rem, 4vw, 3.4rem); color: #fff; line-height: 1.05;
      margin-bottom: 16px;
    }
    .app-hero-desc { color: var(--silver); font-size: 1rem; line-height: 1.7; margin-bottom: 28px; }
    .app-hero-icon {
      font-size: clamp(6rem, 12vw, 10rem);
      text-align: center; opacity: .85;
      filter: drop-shadow(0 10px 40px rgba(212,18,23,.3));
    }
    .app-section { background: var(--white); padding: 70px 5%; }
    .app-section-alt { background: var(--offwhite); }
    .app-inner { max-width: 1200px; margin: auto; }

    /* ── FAULT CARDS ── */
    .fault-grid {
      display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 20px; margin-top: 36px;
    }
    .fault-card {
      background: #fff; border-radius: 10px;
      border: 1px solid rgba(13,27,46,.08);
      padding: 24px; box-shadow: 0 2px 12px rgba(13,27,46,.06);
      transition: var(--transition); cursor: default;
    }
    .fault-card:hover { transform: translateY(-4px); box-shadow: 0 8px 28px rgba(13,27,46,.12); border-color: var(--red); }
    .fault-icon { font-size: 2rem; margin-bottom: 12px; }
    .fault-title { font-family: var(--font-head); font-weight: 800; font-size: 1.1rem; color: var(--navy); margin-bottom: 6px; letter-spacing: .02em; }
    .fault-desc { color: var(--muted); font-size: .9rem; line-height: 1.6; }

    /* ── PROCESS STEPS ── */
    .steps { display: flex; gap: 0; margin-top: 48px; position: relative; }
    .steps::before {
      content: ''; position: absolute;
      top: 28px; left: calc(28px + 0px); right: calc(28px + 0px);
      height: 2px; background: linear-gradient(90deg, var(--red), rgba(212,18,23,.2));
    }
    .step {
      flex: 1; text-align: center; position: relative; padding: 0 12px;
    }
    .step-num {
      width: 56px; height: 56px; border-radius: 50%;
      background: var(--red); color: #fff;
      font-family: var(--font-head); font-weight: 900; font-size: 1.4rem;
      display: flex; align-items: center; justify-content: center;
      margin: 0 auto 16px; position: relative; z-index: 1;
      box-shadow: 0 4px 16px rgba(212,18,23,.4);
    }
    .step-title { font-family: var(--font-head); font-weight: 800; font-size: 1rem; color: var(--navy); margin-bottom: 6px; letter-spacing: .02em; }
    .step-desc { color: var(--muted); font-size: .85rem; line-height: 1.5; }

    /* ── WHY US STRIP ── */
    .why-strip { background: var(--navy); padding: 60px 5%; }
    .why-grid {
      max-width: 1200px; margin: auto;
      display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
    }
    .why-item {
      text-align: center;
      background: rgba(255,255,255,.04);
      border: 1px solid rgba(255,255,255,.08);
      border-radius: 10px; padding: 28px 20px;
      transition: var(--transition);
    }
    .why-item:hover { background: rgba(212,18,23,.1); border-color: rgba(212,18,23,.3); }
    .why-icon { font-size: 2.2rem; margin-bottom: 12px; }
    .why-title { font-family: var(--font-head); font-weight: 800; font-size: 1rem; color: #fff; margin-bottom: 6px; letter-spacing: .04em; text-transform: uppercase; }
    .why-desc { color: var(--silver); font-size: .85rem; line-height: 1.5; }

    /* ── COVERAGE ── */
    #cobertura { background: var(--white);} /*var(--offwhite);*/
    .coverage-grid {
      display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
      margin-top: 48px;
    }
    .coverage-box {
      background: #fff; border-radius: 12px;
      border: 1px solid rgba(13,27,46,.08);
      box-shadow: 0 4px 20px rgba(13,27,46,.07);
      overflow: hidden;
    }
    .coverage-box-head {
      background: var(--navy); padding: 18px 24px;
      display: flex; align-items: center; gap: 10px;
    }
    .coverage-box-head h3 {
      font-family: var(--font-head); font-weight: 800;
      font-size: 1.15rem; color: #fff; letter-spacing: .04em;
      text-transform: uppercase;
    }
    .coverage-box-head span { font-size: 1.3rem; }
    .coverage-list {
      display: flex; flex-wrap: wrap; gap: 8px; padding: 20px 24px;
    }
    .coverage-tag {
      background: var(--offwhite); border: 1px solid rgba(13,27,46,.1);
      border-radius: 4px; padding: 5px 12px;
      font-size: .83rem; font-weight: 500; color: var(--text);
      transition: var(--transition); cursor: default;
    }
    .coverage-tag:hover { background: var(--red); color: #fff; border-color: var(--red); }
    .free-highlight {
      background: linear-gradient(135deg, var(--navy), var(--navy-light));
      border-radius: 12px; padding: 36px 40px;
      display: flex; align-items: center; gap: 24px;
      margin-top: 36px; box-shadow: var(--shadow);
    }
    .free-highlight-icon { font-size: 3rem; flex-shrink: 0; }
    .free-highlight-text h3 {
      font-family: var(--font-head); font-weight: 900;
      font-size: 1.5rem; color: var(--gold); margin-bottom: 6px;
      letter-spacing: .03em;
    }
    .free-highlight-text p { color: var(--silver); font-size: .95rem; line-height: 1.6; }

    /* ── CONTACT ── */
    #contacto { background: var(--navy); }
    .contact-grid {
      display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
      align-items: start; max-width: 1100px; margin: auto; padding: 80px 5%;
    }
    .contact-info-title {
      font-family: var(--font-head); font-weight: 900;
      font-size: 2.2rem; color: #fff; margin-bottom: 8px;
    }
    .contact-info-sub { color: var(--silver); font-size: .95rem; margin-bottom: 36px; line-height: 1.7; }
    .contact-detail {
      display: flex; align-items: flex-start; gap: 16px;
      margin-bottom: 24px;
    }
    .contact-detail-icon {
      width: 46px; height: 46px; border-radius: 10px;
      background: rgba(212,18,23,.15); border: 1px solid rgba(212,18,23,.25);
      display: flex; align-items: center; justify-content: center;
      font-size: 1.2rem; flex-shrink: 0; color: var(--red);
    }
    .contact-detail-body strong { display: block; color: #fff; font-weight: 600; margin-bottom: 2px; }
    .contact-detail-body span { color: var(--silver); font-size: .9rem; }
    .contact-detail-body a { color: var(--gold); text-decoration: none; font-weight: 600; }
    .contact-form-box {
      background: rgba(255,255,255,.05);
      border: 1px solid rgba(255,255,255,.1);
      border-radius: 12px; padding: 36px;
      backdrop-filter: blur(8px);
    }
    .form-title {
      font-family: var(--font-head); font-weight: 800;
      font-size: 1.4rem; color: #fff; margin-bottom: 24px; letter-spacing: .03em;
    }
    .form-row { margin-bottom: 18px; }
    .form-row label {
      display: block; color: var(--silver); font-size: .85rem;
      font-weight: 500; margin-bottom: 6px; letter-spacing: .04em;
    }
    .form-row input, .form-row select, .form-row textarea {
      width: 100%; background: rgba(255,255,255,.07);
      border: 1px solid rgba(255,255,255,.15);
      border-radius: 6px; color: #fff;
      font-family: var(--font-body); font-size: .95rem;
      padding: 12px 14px; transition: var(--transition);
      outline: none; appearance: none;
    }
    .form-row input::placeholder,
    .form-row textarea::placeholder { color: rgba(200,212,226,.4); }
    .form-row input:focus, .form-row select:focus, .form-row textarea:focus {
      border-color: var(--red); background: rgba(255,255,255,.1);
    }
    .form-row select option { background: var(--navy); }
    .form-row textarea { resize: vertical; min-height: 110px; }
    .form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .form-submit {
      width: 100%; padding: 15px;
      background: var(--red); color: #fff;
      font-family: var(--font-head); font-weight: 700;
      font-size: 1.1rem; letter-spacing: .08em; text-transform: uppercase;
      border: none; border-radius: 6px; cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 4px 20px rgba(212,18,23,.4);
      margin-top: 6px;
    }
    .form-submit:hover { background: var(--red-dark); transform: translateY(-2px); }
    .form-note { color: rgba(200,212,226,.5); font-size: .8rem; margin-top: 10px; text-align: center; }
    .form-success {
      display: none; background: rgba(37,211,102,.12);
      border: 1px solid rgba(37,211,102,.3); border-radius: 8px;
      padding: 16px; color: #25D366; font-weight: 600; text-align: center;
      margin-top: 14px;
    }

    /* ── FOOTER ── */
    footer {
      background: #060d18; padding: 36px 5%;
      display: flex; flex-wrap: wrap;
      justify-content: space-between; align-items: center; gap: 20px;
    }
    .footer-logo {
      font-family: var(--font-head); font-weight: 900;
      font-size: 1.3rem; color: #fff; letter-spacing: .04em;
    }
    .footer-logo span { color: var(--red); }
    footer p { color: var(--muted); font-size: .83rem; }
    .footer-nav { display: flex; gap: 20px; flex-wrap: wrap; }
    .footer-nav a { color: var(--muted); text-decoration: none; font-size: .83rem; transition: var(--transition); }
    .footer-nav a:hover { color: var(--red); }

    

    /* ── ERROR CODES TABLE ── */
    .error-section { background: var(--navy); padding: 70px 5%; }
    .error-inner { max-width: 1200px; margin: auto; }
    .error-intro { color: var(--silver); font-size: .97rem; line-height: 1.75; max-width: 780px; margin: 0 0 36px; }
    .error-table-wrap { overflow-x: auto; border-radius: 10px; border: 1px solid rgba(255,255,255,.1); }
    .error-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
    .error-table thead tr { background: var(--red); }
    .error-table thead th { padding: 13px 18px; text-align: left; font-family: var(--font-head); font-weight: 700; font-size: .85rem; letter-spacing: .08em; text-transform: uppercase; color: #fff; }
    .error-table tbody tr { border-bottom: 1px solid rgba(255,255,255,.07); transition: var(--transition); }
    .error-table tbody tr:last-child { border-bottom: none; }
    .error-table tbody tr:hover { background: rgba(255,255,255,.04); }
    .error-table tbody td { padding: 11px 18px; color: var(--silver); vertical-align: top; }
    .error-table .code-cell { font-family: var(--font-head); font-weight: 800; font-size: 1rem; color: var(--red-light); white-space: nowrap; }
    .error-table .sys-cell { color: rgba(200,212,226,.65); font-size: .82rem; }
    .error-badge-warn { display: inline-block; background: rgba(240,165,0,.15); border: 1px solid rgba(240,165,0,.35); color: var(--gold); border-radius: 4px; padding: 3px 9px; font-size: .75rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; white-space: nowrap; }
    .error-note { margin-top: 24px; background: rgba(212,18,23,.1); border-left: 3px solid var(--red); border-radius: 0 6px 6px 0; padding: 16px 20px; color: var(--silver); font-size: .88rem; line-height: 1.6; }
    .error-note strong { color: #fff; }
    /* ── FAQ ── */
    .faq-section { background: var(--offwhite); padding: 70px 5%; }
    .faq-inner { max-width: 860px; margin: auto; }
    .faq-list { margin-top: 36px; display: flex; flex-direction: column; gap: 10px; }
    .faq-item { background: #fff; border: 1px solid rgba(13,27,46,.09); border-radius: 8px; overflow: hidden; box-shadow: 0 2px 8px rgba(13,27,46,.05); }
    .faq-q { width: 100%; background: none; border: none; cursor: pointer; padding: 18px 20px; display: flex; align-items: center; justify-content: space-between; text-align: left; gap: 16px; font-family: var(--font-body); font-size: .97rem; font-weight: 600; color: var(--text); transition: var(--transition); }
    .faq-q:hover { color: var(--red); }
    .faq-q .arrow { flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; background: var(--offwhite); display: flex; align-items: center; justify-content: center; font-size: .75rem; transition: var(--transition); }
    .faq-item.open .faq-q .arrow { background: var(--red); color: #fff; transform: rotate(180deg); }
    .faq-a { display: none; padding: 0 20px 18px; color: var(--muted); font-size: .92rem; line-height: 1.7; border-top: 1px solid var(--offwhite); }
    .faq-item.open .faq-a { display: block; }
    /* ── MODELS GRID ── */
    .models-section { background: var(--white); padding: 70px 5%; }
    .models-inner { max-width: 1200px; margin: auto; }
    .models-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 14px; margin-top: 36px; }
    .model-card { background: var(--offwhite); border: 1px solid rgba(13,27,46,.09); border-radius: 8px; padding: 18px 20px; transition: var(--transition); }
    .model-card:hover { border-color: var(--red); background: #fff; box-shadow: 0 4px 16px rgba(212,18,23,.1); }
    .model-name { font-family: var(--font-head); font-weight: 800; font-size: 1rem; color: var(--navy); margin-bottom: 4px; }
    .model-ref { font-size: .78rem; color: var(--muted); }
    /* ── SEO INTRO ── */
    .seo-intro { background: var(--white); padding: 52px 5% 0; }
    .seo-intro-inner { max-width: 1200px; margin: auto; }
    .seo-intro p { color: var(--muted); font-size: .97rem; line-height: 1.8; margin-bottom: 14px; }
    .seo-intro h2 { font-family: var(--font-head); font-weight: 900; font-size: 1.5rem; color: var(--navy); margin: 28px 0 10px; }
    /* ── RESPONSIVE ── */
    /* ── TABLET (≤ 900px) ── */
    @media (max-width: 900px) {
      #inicio { scroll-margin-top: 64px; }
      .hero-inner { grid-template-columns: 1fr; min-height: auto; }
      .hero-visual { display: none; }
      .hero-content { padding: 60px 5%; }
      .app-hero-inner { grid-template-columns: 1fr; }
      .app-hero-icon { display: none; }
      .hero-visual { display: none; }
      .coverage-grid { grid-template-columns: 1fr; }
      .contact-grid { grid-template-columns: 1fr; padding: 60px 5%; }
      .steps { flex-direction: column; }
      .steps::before { display: none; }
      .step { display: flex; align-items: flex-start; gap: 16px; text-align: left; padding: 0 0 24px; }
      .step-num { flex-shrink: 0; margin: 0; }
      /* why-grid: 2 columnas en tablet */
      .why-grid { grid-template-columns: repeat(2, 1fr); }
      /* fault-grid: 2 columnas en tablet */
      .fault-grid { grid-template-columns: repeat(2, 1fr); }
      /* models-grid: 2 columnas en tablet */
      .models-grid { grid-template-columns: repeat(2, 1fr); }
      /* hero-card compacto */
      .hero-card-wrap { max-width: 100%; }
      /* contact-form-box sin glassmorphism pesado */
      .contact-form-box { padding: 24px; }
    }

    /* ── MÓVIL GRANDE (≤ 700px) ── */
    @media (max-width: 700px) {
      .nav-links { display: none; }
      .hamburger { display: flex; }
      .topbar { font-size: .72rem; flex-wrap: wrap; gap: 4px; }
      /* why-grid: 1 columna en móvil */
      .why-grid { grid-template-columns: 1fr; }
      /* fault-grid: 1 columna en móvil */
      .fault-grid { grid-template-columns: 1fr; }
      /* models-grid: 2 columnas compactas */
      .models-grid { grid-template-columns: repeat(2, 1fr); }
      /* coverage-grid ya es 1fr desde 900px */
      .free-highlight { flex-direction: column; text-align: center; }
      .form-row-2 { grid-template-columns: 1fr; }
      .hero-stats { gap: 20px; }
      /* secciones: padding reducido */
      .container { padding: 52px 5%; }
      .container-sm { padding: 52px 5%; }
      .app-section { padding: 48px 5%; }
      .error-section { padding: 48px 5%; }
      .faq-section { padding: 48px 5%; }
      .models-section { padding: 48px 5%; }
      .seo-intro { padding: 36px 5% 0; }
      .why-strip { padding: 40px 5%; }
      /* hero title más pequeño */
      .hero-title { font-size: 2.4rem; }
      .hero-sub { font-size: 1.1rem; }
      .hero-badge { font-size: .74rem; }
      /* app-hero compacto */
      .app-hero { padding: 52px 5%; }
      .app-hero-title { font-size: 2rem; }
      /* hero-ctas: botones apilados */
      .hero-ctas { flex-direction: column; }
      .btn-primary { font-size: 1rem; padding: 13px 22px; justify-content: center; }
      .btn-secondary { font-size: 1rem; padding: 13px 22px; justify-content: center; }
      /* hero-stats en 2 columnas */
      .hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
      .hero-stat strong { font-size: 1.6rem; }
      /* section-title más pequeño */
      .section-title { font-size: 1.7rem; }
      /* steps: texto más pequeño */
      .step-title { font-size: .95rem; }
      .step-desc { font-size: .82rem; }
      /* coverage-tag: texto más pequeño */
      .coverage-tag { font-size: .78rem; padding: 4px 10px; }
      /* contact details más compactos */
      .contact-info-title { font-size: 1.7rem; }
      .contact-form-box { padding: 20px 16px; }
      /* FAQ */
      .faq-q { font-size: .9rem; padding: 15px 16px; }
      .faq-a { padding: 0 16px 15px; font-size: .88rem; }
      /* footer apilado */
      footer { flex-direction: column; align-items: flex-start; gap: 16px; padding: 28px 5%; }
      .footer-nav { gap: 12px; }
    }

    /* ── MÓVIL PEQUEÑO (≤ 420px) ── */
    @media (max-width: 420px) {
      .models-grid { grid-template-columns: 1fr; }
      .hero-card-phone { font-size: 1.7rem; }
      .topbar { display: none; }
      /* tabla de errores: ocultar columna "sistema" para ganar espacio */
      .error-table .sys-cell { display: none; }
      .error-table thead th:nth-child(2) { display: none; }
      .error-table thead th { padding: 10px 10px; font-size: .75rem; }
      .error-table tbody td { padding: 9px 10px; font-size: .82rem; }
      .error-table .code-cell { font-size: .9rem; }
      /* strip-chip más pequeño */
      .strip-chip { font-size: .78rem; padding: 5px 10px; }
      /* float-btns más compactos */
      .float-btn { width: 50px; height: 50px; font-size: 22px; }
    }