:root {
        --bg: #f4f8f9;
        --surface: #ffffff;
        --surface-soft: #edf4f5;
        --text: #12303a;
        --text-muted: #587179;
        --primary: #0e4f61;
        --primary-strong: #0a3d4b;
        --accent: #f28c38;
        --accent-soft: #fff1e4;
        --border: rgba(14, 79, 97, 0.12);
        --shadow: 0 18px 40px rgba(10, 61, 75, 0.08);
        --shadow-soft: 0 10px 24px rgba(10, 61, 75, 0.06);
        --radius: 22px;
        --radius-sm: 14px;
        --max-width: 1180px;
      }
      * { box-sizing: border-box; }
      html { scroll-behavior: smooth; }
      body {
        margin: 0;
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
        background:
          radial-gradient(circle at top left, rgba(242, 140, 56, 0.1), transparent 24%),
          linear-gradient(180deg, #f9fbfc 0%, #f4f8f9 100%);
        color: var(--text);
        line-height: 1.6;
      }
      img { max-width: 100%; display: block; }
      a { color: inherit; text-decoration: none; }
      button, input { font: inherit; }
      .container { width: min(calc(100% - 2rem), var(--max-width)); margin: 0 auto; }
      .section { padding: 4.5rem 0; }
      .section-header { max-width: 680px; margin-bottom: 2rem; }
      .eyebrow {
        display: inline-flex; align-items: center; gap: 0.5rem;
        padding: 0.35rem 0.8rem; border-radius: 999px;
        background: var(--accent-soft); color: var(--accent);
        font-size: 0.85rem; font-weight: 700; letter-spacing: 0.02em;
      }
      .hero-author {
        display: flex; align-items: center; gap: 0.9rem; margin-bottom: 1.1rem;
      }
      .author-photo {
        width: 6.4rem; height: 6.4rem; border-radius: 50%; object-fit: cover;
        box-shadow: var(--shadow-soft); border: 3px solid var(--surface);
      }
      .section-photo {
        width: 100%; max-height: 360px; object-fit: cover; border-radius: 26px;
        box-shadow: var(--shadow-soft); border: 1px solid var(--border);
        margin-bottom: 2.2rem; display: block;
      }
      h1, h2, h3 { margin: 0 0 1rem; line-height: 1.12; letter-spacing: -0.03em; }
      h1 { font-size: clamp(2.5rem, 6vw, 4.6rem); }
      h2 { font-size: clamp(2rem, 4vw, 3rem); }
      h3 { font-size: 1.2rem; }
      p { margin: 0 0 1rem; color: var(--text-muted); }
      .btn, .btn-secondary {
        display: inline-flex; align-items: center; justify-content: center;
        gap: 0.55rem; min-height: 3.2rem; padding: 0.95rem 1.35rem;
        border-radius: 999px; border: 1px solid transparent; font-weight: 700;
        transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
      }
      .btn { background: var(--accent); color: #ffffff; box-shadow: 0 12px 26px rgba(242, 140, 56, 0.28); }
      .btn:hover, .btn:focus-visible { transform: translateY(-2px); box-shadow: 0 16px 32px rgba(242, 140, 56, 0.35); }
      .btn-secondary { background: rgba(255,255,255,0.85); color: var(--primary); border-color: var(--border); }
      .btn-secondary:hover, .btn-secondary:focus-visible { transform: translateY(-2px); box-shadow: var(--shadow-soft); }
      .site-header {
        position: sticky; top: 0; z-index: 20;
        background: rgba(249, 251, 252, 0.9); backdrop-filter: blur(14px);
        border-bottom: 1px solid rgba(14, 79, 97, 0.08);
      }
      .header-inner {
        display: flex; flex-wrap: wrap; align-items: center;
        justify-content: space-between; gap: 1rem; padding: 1rem 0;
      }
      .brand {
        display: inline-flex; align-items: center; gap: 0.75rem;
        font-weight: 800; letter-spacing: -0.03em; color: var(--primary-strong);
      }
      .brand-mark {
        width: 2.45rem; height: 2.45rem; border-radius: 0.9rem;
        background: linear-gradient(135deg, var(--primary), #197188), var(--primary);
        color: #ffffff; display: grid; place-items: center; box-shadow: var(--shadow-soft);
      }
      .nav {
        display: flex; order: 3; width: 100%; gap: 0.6rem;
        overflow-x: auto; padding-bottom: 0.2rem; scrollbar-width: none;
      }
      .nav::-webkit-scrollbar { display: none; }
      .lang-switch {
        border-color: var(--accent) !important; color: var(--accent) !important;
      }
      .nav a {
        flex: 0 0 auto; padding: 0.7rem 0.95rem; border-radius: 999px;
        background: rgba(255,255,255,0.8); border: 1px solid rgba(14, 79, 97, 0.08);
        color: var(--text-muted); font-weight: 600;
      }
      .hero { padding: 3.25rem 0 2rem; }
      .hero-shell { position: relative; }
      .hero-grid { display: grid; gap: 2rem; align-items: center; }
      .hero-copy p { font-size: 1.05rem; max-width: 58ch; }
      .hero-actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin: 1.75rem 0 1.4rem; }
      .hero-points { display: grid; gap: 0.85rem; margin-top: 1.6rem; }
      .hero-points span {
        display: flex; align-items: center; gap: 0.8rem; padding: 0.95rem 1rem;
        border-radius: var(--radius-sm); background: rgba(255,255,255,0.82);
        border: 1px solid rgba(14, 79, 97, 0.08); box-shadow: var(--shadow-soft);
        color: var(--primary-strong); font-weight: 600;
      }
      .hero-trust { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.85rem; margin-top: 1.8rem; }
      .hero-trust strong { display: block; margin-bottom: 0.2rem; color: var(--primary-strong); font-size: 1.2rem; }
      .hero-trust span {
        display: block; padding: 1rem; border-radius: 18px;
        background: rgba(255,255,255,0.84); border: 1px solid rgba(14, 79, 97, 0.08);
        box-shadow: var(--shadow-soft); color: var(--text-muted); font-size: 0.92rem;
      }
      .mini-proof { display: grid; gap: 0.9rem; margin-top: 1.4rem; }
      .mini-proof span {
        display: inline-flex; align-items: center; gap: 0.6rem; padding: 0.8rem 1rem;
        width: fit-content; border-radius: 999px; background: rgba(14, 79, 97, 0.06);
        color: var(--primary-strong); font-size: 0.92rem; font-weight: 700;
      }
      .hero-visual { position: relative; }
      .mockup-card {
        position: relative; overflow: hidden; border-radius: 30px; padding: 1.4rem;
        background: linear-gradient(160deg, #0e4f61 0%, #14667c 100%);
        box-shadow: 0 28px 52px rgba(14, 79, 97, 0.22);
      }
      .mockup-card::before, .mockup-card::after {
        content: ""; position: absolute; border-radius: 50%; background: rgba(255,255,255,0.08);
      }
      .mockup-card::before { width: 180px; height: 180px; top: -40px; right: -60px; }
      .mockup-card::after { width: 130px; height: 130px; bottom: -30px; left: -35px; }
      .mockup-window {
        position: relative; z-index: 1; border-radius: 24px;
        background: rgba(255,255,255,0.98); padding: 1rem;
      }
      .mockup-topbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
      .dots { display: flex; gap: 0.4rem; }
      .dots i { width: 0.65rem; height: 0.65rem; border-radius: 50%; background: #d3dde0; }
      .mockup-badge {
        padding: 0.35rem 0.65rem; border-radius: 999px;
        background: #e6f3f6; color: var(--primary); font-size: 0.8rem; font-weight: 700;
      }
      .mockup-layout { display: grid; gap: 1rem; }
      .mockup-main {
        padding: 1.15rem; border-radius: 20px;
        background: linear-gradient(180deg, #f6fbfc 0%, #edf6f7 100%);
      }
      .mockup-main strong { display: block; margin-bottom: 0.45rem; color: var(--primary-strong); }
      .mockup-metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.85rem; }
      .metric { padding: 1rem; border-radius: 18px; background: #ffffff; border: 1px solid rgba(14, 79, 97, 0.08); }
      .metric span { display: block; font-size: 0.82rem; color: var(--text-muted); }
      .metric strong { display: block; margin-top: 0.3rem; font-size: 1.35rem; color: var(--primary-strong); }
      .problem-grid, .training-grid, .testimonials-grid, .footer-grid { display: grid; gap: 1rem; }
      .card {
        background: rgba(255,255,255,0.9); border: 1px solid var(--border);
        border-radius: var(--radius); padding: 1.4rem; box-shadow: var(--shadow-soft);
      }
      .icon-box {
        width: 3rem; height: 3rem; border-radius: 1rem; display: grid; place-items: center;
        background: var(--accent-soft); font-size: 1.35rem; margin-bottom: 1rem;
      }
      .training-grid .card, .testimonial, .step, .cta-box, .contact-box { background: var(--surface); }
      .training-grid .card { position: relative; overflow: hidden; }
      .training-grid .card::before {
        content: ""; position: absolute; inset: 0 auto auto 0; width: 100%; height: 4px;
        background: linear-gradient(90deg, var(--accent), rgba(242, 140, 56, 0.1));
      }
      .training-grid .card p:last-child { margin-bottom: 0; }
      .library-section {
        background:
          linear-gradient(180deg, rgba(18, 48, 58, 0.04), rgba(255, 255, 255, 0.45));
      }
      .library-intro {
        display: grid;
        gap: 1.25rem;
        align-items: end;
        margin-bottom: 1.8rem;
      }
      .library-note {
        padding: 1.25rem;
        border-radius: 22px;
        border: 1px solid rgba(242, 140, 56, 0.26);
        background: rgba(255, 241, 228, 0.72);
        box-shadow: var(--shadow-soft);
      }
      .library-note strong {
        display: block;
        margin-bottom: 0.35rem;
        color: #a35518;
      }
      .library-note p {
        margin: 0;
        font-size: 0.94rem;
      }
      .library-grid {
        display: grid;
        gap: 1rem;
      }
      .book-card {
        display: grid;
        gap: 1.15rem;
        padding: 1.15rem;
        border-radius: var(--radius);
        border: 1px solid var(--border);
        background: rgba(255, 255, 255, 0.94);
        box-shadow: var(--shadow-soft);
      }
      .book-card.featured-book {
        border-color: rgba(242, 140, 56, 0.28);
        background: linear-gradient(180deg, rgba(255, 241, 228, 0.52), rgba(255, 255, 255, 0.98));
      }
      .book-card.method-book {
        border-color: rgba(14, 79, 97, 0.2);
      }
      .book-cover {
        min-height: 17rem;
        aspect-ratio: 5 / 8;
        width: min(100%, 13rem);
        border-radius: 12px 18px 18px 12px;
        justify-self: center;
        overflow: hidden;
        box-shadow: 0 18px 28px rgba(10, 61, 75, 0.18);
        border: 1px solid rgba(18, 48, 58, 0.14);
        background-color: #15110e;
      }
      .image-cover {
        background-size: contain;
        background-position: center;
        background-repeat: no-repeat;
      }
      .book-content {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
      }
      .book-kicker {
        margin-bottom: 0.45rem;
        color: var(--accent);
        font-size: 0.82rem;
        font-weight: 800;
      }
      .book-isbn {
        margin: 0.2rem 0 0.55rem;
        color: var(--muted);
        font-size: 0.84rem;
        font-weight: 700;
      }
      .book-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 0.45rem;
        margin: 0.35rem 0 1.1rem;
      }
      .book-tags span {
        padding: 0.32rem 0.58rem;
        border-radius: 999px;
        background: rgba(14, 79, 97, 0.07);
        color: var(--primary-strong);
        font-size: 0.8rem;
        font-weight: 750;
      }
      .book-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 0.55rem;
        margin-top: auto;
      }
      .book-action {
        min-height: 2.75rem;
        padding: 0.68rem 0.9rem;
        font-size: 0.92rem;
      }
      .disabled-action {
        cursor: default;
        box-shadow: none;
        opacity: 0.82;
      }
      .disabled-action:hover,
      .disabled-action:focus-visible {
        transform: none;
        box-shadow: none;
      }
      .compact-list {
        gap: 0.55rem;
        margin-top: 0.9rem;
      }
      .compact-list span {
        font-size: 0.92rem;
        font-weight: 600;
      }
      .highlight-section {
        background:
          linear-gradient(180deg, rgba(237, 244, 245, 0.68), rgba(255, 255, 255, 0.42));
      }
      .source-card {
        min-height: 100%;
      }
      .source-links {
        display: grid;
        gap: 0.85rem;
        margin-top: 1rem;
      }
      .source-links a {
        display: block;
        padding: 0.95rem 1rem;
        border-radius: 16px;
        background: rgba(14, 79, 97, 0.06);
        border: 1px solid rgba(14, 79, 97, 0.1);
        color: var(--primary-strong);
        font-weight: 700;
      }
      .source-links a:hover,
      .source-links a:focus-visible {
        background: rgba(242, 140, 56, 0.12);
        border-color: rgba(242, 140, 56, 0.28);
      }
      .fine-print {
        margin-top: 1.1rem;
        font-size: 0.9rem;
      }
      .integrated-panel {
        display: grid;
        gap: 1.4rem;
        padding: 1.6rem;
        border-radius: 26px;
        background:
          linear-gradient(135deg, rgba(14, 79, 97, 0.96), rgba(20, 102, 124, 0.92)),
          var(--primary);
        border: 1px solid rgba(255, 255, 255, 0.18);
        box-shadow: 0 18px 40px rgba(10, 61, 75, 0.16);
      }
      .integrated-panel h3 {
        color: #ffffff;
      }
      .integrated-panel p {
        color: rgba(255, 255, 255, 0.78);
      }
      .integrated-panel .problem-list {
        margin: 0;
      }
      .integrated-panel .problem-list span {
        color: #ffffff;
      }
      .integrated-panel .problem-list span::before {
        background: rgba(255, 255, 255, 0.16);
        color: #ffffff;
      }
      .steps { display: grid; gap: 1rem; }
      .step {
        position: relative; padding: 1.5rem; border-radius: var(--radius);
        border: 1px solid var(--border); box-shadow: var(--shadow-soft);
      }
      .step-number {
        display: inline-grid; place-items: center; width: 2.6rem; height: 2.6rem;
        margin-bottom: 1rem; border-radius: 50%; background: var(--primary);
        color: #ffffff; font-weight: 800;
      }
      .problem-strip {
        padding-top: 1rem;
        background:
          url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='800' height='320' viewBox='0 0 800 320'%3E%3Cg stroke='%230e4f61' stroke-opacity='0.1' stroke-width='1.5' fill='none'%3E%3Cline x1='50' y1='60' x2='180' y2='120'/%3E%3Cline x1='180' y1='120' x2='120' y2='230'/%3E%3Cline x1='180' y1='120' x2='330' y2='75'/%3E%3Cline x1='330' y1='75' x2='430' y2='190'/%3E%3Cline x1='600' y1='45' x2='700' y2='140'/%3E%3Cline x1='700' y1='140' x2='650' y2='250'/%3E%3Cline x1='700' y1='140' x2='780' y2='85'/%3E%3C/g%3E%3Cg fill='%230e4f61' fill-opacity='0.14'%3E%3Ccircle cx='50' cy='60' r='5'/%3E%3Ccircle cx='180' cy='120' r='7'/%3E%3Ccircle cx='120' cy='230' r='4'/%3E%3Ccircle cx='330' cy='75' r='5'/%3E%3Ccircle cx='430' cy='190' r='4'/%3E%3Ccircle cx='600' cy='45' r='5'/%3E%3Ccircle cx='700' cy='140' r='7'/%3E%3Ccircle cx='650' cy='250' r='4'/%3E%3Ccircle cx='780' cy='85' r='5'/%3E%3C/g%3E%3C/svg%3E");
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
      }
      .problem-grid { grid-template-columns: 1fr; }
      .problem-card {
        position: relative; overflow: hidden; padding: 1.6rem; border-radius: 26px;
        background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(237,244,245,0.88));
        border: 1px solid var(--border); box-shadow: var(--shadow-soft);
      }
      .problem-card::after {
        content: ""; position: absolute; inset: auto -1.5rem -1.5rem auto;
        width: 110px; height: 110px; border-radius: 50%; background: rgba(242, 140, 56, 0.08);
      }
      .problem-list { display: grid; gap: 0.85rem; margin-top: 1.2rem; }
      .problem-list span { display: flex; align-items: flex-start; gap: 0.75rem; color: var(--primary-strong); font-weight: 600; }
      .problem-list span::before {
        content: "✓"; flex: 0 0 auto; width: 1.4rem; height: 1.4rem; border-radius: 50%;
        display: inline-grid; place-items: center; background: rgba(242, 140, 56, 0.14);
        color: var(--accent); font-size: 0.9rem; margin-top: 0.05rem;
      }
      .cta-box, .contact-box { border-radius: 28px; border: 1px solid var(--border); box-shadow: var(--shadow); }
      .plans-grid, .coverage-grid { display: grid; gap: 1rem; }
      .plan-card {
        position: relative; padding: 1.6rem; border-radius: 24px;
        border: 1px solid var(--border); background: rgba(255,255,255,0.96); box-shadow: var(--shadow-soft);
      }
      .plan-card.featured {
        background: linear-gradient(180deg, rgba(242, 140, 56, 0.08), rgba(255,255,255,0.98));
        border-color: rgba(242, 140, 56, 0.28);
      }
      .plan-tag {
        display: inline-flex; padding: 0.35rem 0.7rem; margin-bottom: 1rem;
        border-radius: 999px; background: rgba(14, 79, 97, 0.08);
        color: var(--primary); font-size: 0.82rem; font-weight: 800;
      }
      .plan-card.featured .plan-tag { background: rgba(242, 140, 56, 0.14); color: #a35518; }
      .plan-monthly { margin: 0 0 1rem; color: var(--text-muted); font-weight: 700; }
      .plan-features, .coverage-list { display: grid; gap: 0.75rem; margin-top: 1.2rem; }
      .plan-features span, .coverage-list span { display: flex; align-items: flex-start; gap: 0.7rem; color: var(--primary-strong); font-weight: 600; }
      .plan-features span::before, .coverage-list span::before { content: "•"; color: var(--accent); font-size: 1.2rem; line-height: 1; }
      .cta-box {
        padding: 2rem;
        background:
          url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='800' height='320' viewBox='0 0 800 320'%3E%3Cg stroke='%23ffffff' stroke-opacity='0.14' stroke-width='1.5' fill='none'%3E%3Cline x1='50' y1='60' x2='180' y2='120'/%3E%3Cline x1='180' y1='120' x2='120' y2='230'/%3E%3Cline x1='180' y1='120' x2='330' y2='75'/%3E%3Cline x1='330' y1='75' x2='430' y2='190'/%3E%3Cline x1='600' y1='45' x2='700' y2='140'/%3E%3Cline x1='700' y1='140' x2='650' y2='250'/%3E%3Cline x1='700' y1='140' x2='780' y2='85'/%3E%3C/g%3E%3Cg fill='%23ffffff' fill-opacity='0.2'%3E%3Ccircle cx='50' cy='60' r='5'/%3E%3Ccircle cx='180' cy='120' r='7'/%3E%3Ccircle cx='120' cy='230' r='4'/%3E%3Ccircle cx='330' cy='75' r='5'/%3E%3Ccircle cx='430' cy='190' r='4'/%3E%3Ccircle cx='600' cy='45' r='5'/%3E%3Ccircle cx='700' cy='140' r='7'/%3E%3Ccircle cx='650' cy='250' r='4'/%3E%3Ccircle cx='780' cy='85' r='5'/%3E%3C/g%3E%3C/svg%3E"),
          linear-gradient(135deg, rgba(14, 79, 97, 0.96), rgba(20, 102, 124, 0.92)), var(--primary);
        background-size: cover, cover, auto;
        background-position: center, center, center;
        color: #ffffff; text-align: center;
      }
      .cta-box p { color: rgba(255,255,255,0.78); max-width: 620px; margin: 0 auto 1.5rem; }
      .contact-wrap { display: grid; gap: 1.25rem; }
      .contact-box { padding: 1.8rem; }
      .contact-intro {
        padding: 1.8rem; border-radius: 28px;
        background: linear-gradient(180deg, #eef6f7 0%, #ffffff 100%);
        border: 1px solid var(--border); box-shadow: var(--shadow-soft);
      }
      .contact-list { display: grid; gap: 0.9rem; margin-top: 1.4rem; }
      .contact-list span { display: flex; align-items: center; gap: 0.7rem; color: var(--primary-strong); font-weight: 600; }
      form { display: grid; gap: 1rem; }
      label { display: block; margin-bottom: 0.45rem; font-weight: 700; color: var(--primary-strong); }
      input, select, textarea {
        width: 100%; padding: 0.95rem 1rem; border-radius: 14px;
        border: 1px solid rgba(14, 79, 97, 0.16); background: #fbfdfd; color: var(--text);
        font-family: inherit; font-size: 1rem;
      }
      textarea { resize: vertical; }
      input:focus, select:focus, textarea:focus { outline: 2px solid rgba(242, 140, 56, 0.18); border-color: var(--accent); }
      .form-note { margin: 0; font-size: 0.92rem; color: var(--text-muted); }
      .form-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }
      .form-actions .btn, .form-actions .btn-secondary { flex: 1 1 auto; }
      .whatsapp-note {
        display: inline-flex; align-items: center; gap: 0.55rem; margin-top: 1rem;
        padding: 0.8rem 1rem; border-radius: 16px; background: rgba(37, 211, 102, 0.1);
        color: #11693a; font-size: 0.92rem; font-weight: 700;
      }
      .hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
      .footer { padding: 2rem 0 3rem; }
      .footer-grid { align-items: start; }
      .footer-links { display: flex; flex-wrap: wrap; gap: 1rem; color: var(--text-muted); font-weight: 600; }
      .footer-note { color: var(--text-muted); }
      .footer-note a { color: var(--primary); text-decoration: underline; }
      @media (min-width: 700px) {
        .section { padding: 5.5rem 0; }
        .problem-grid, .testimonials-grid, .plans-grid, .coverage-grid {
          grid-template-columns: repeat(2, minmax(0, 1fr));
        }
        .training-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
        .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
        .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
        .book-card { grid-template-columns: auto 1fr; align-items: stretch; }
        .book-cover { width: 10rem; min-height: 16rem; }
      }
      @media (min-width: 920px) {
        .nav { display: flex; order: initial; width: auto; align-items: center; gap: 1.25rem; overflow: visible; padding-bottom: 0; }
        .nav a { padding: 0; background: transparent; border: 0; }
        .lang-switch { padding: 0.3rem 0.7rem !important; border: 1px solid var(--accent) !important; border-radius: 999px; }
        .header-cta { display: inline-flex; }
        .hero { padding: 4.2rem 0 3rem; }
        .hero-grid, .contact-wrap { grid-template-columns: 1.1fr 0.9fr; }
        .integrated-panel { grid-template-columns: 0.9fr 1.1fr; align-items: center; }
        .training-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
        .problem-grid { grid-template-columns: 1.1fr 0.9fr; }
        .plans-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
        .library-intro { grid-template-columns: 1fr 0.42fr; }
        .library-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      }
      @media (max-width: 479px) {
        .hero-trust { grid-template-columns: 1fr; }
      }