:root {
            --navy: #1c4587;
            --navy-dk: #123163;
            --green: #3d7a1f;
            --green-lt: #e8f2e0;
            --grey: #f0f0f0;
            --line: #c0c0c0;
            --link: #1155cc;
            --red: #a01919;
            --amber: #b45309;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            background-color: #e8ecf1;
            font-family: Arial, Helvetica, sans-serif;
            font-size: 14px;
            line-height: 1.5;
            color: #222;
            -webkit-text-size-adjust: 100%;
        }
        a { color: var(--link); text-decoration: none; }
        a:hover { text-decoration: underline; }
        a:focus-visible { outline: 2px solid var(--navy); outline-offset: 2px; }
        button:focus-visible, .btn:focus-visible { outline: 2px solid var(--navy); outline-offset: 2px; }
        .container {
            max-width: 1100px; margin: 0 auto; background: #fff;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08); min-height: 100vh;
            display: flex; flex-direction: column;
        }
        .header {
            background: var(--navy); color: #fff; position: sticky; top: 0; z-index: 100;
            display: flex; align-items: center; justify-content: space-between;
            padding: 8px 16px; flex-wrap: wrap;
        }
        .logo { font-size: 22px; font-weight: bold; color: #fff; text-decoration: none; display: flex; align-items: center; }
        .logo span { color: #8fc34d; }
        .nav-links { display: flex; align-items: center; gap: 16px; }
        .nav-links a { color: #fff; font-size: 14px; font-weight: 600; text-decoration: none; padding: 6px 0; border-bottom: 2px solid transparent; }
        .nav-links a:hover { border-bottom-color: #8fc34d; text-decoration: none; }
        .nav-links .btn-primary { background: #fff; color: var(--navy); padding: 8px 14px; font-weight: bold; border-radius: 0; border: none; cursor: pointer; text-decoration: none; display: inline-block; }
        .nav-links .btn-primary:hover { background: #e8ecf1; text-decoration: none; }
        .hamburger { display: none; flex-direction: column; cursor: pointer; background: transparent; border: none; gap: 4px; padding: 4px; }
        .hamburger span { width: 25px; height: 3px; background: #fff; display: block; border-radius: 2px; }
        @media (max-width: 700px) {
            .nav-links { display: none; width: 100%; flex-direction: column; align-items: flex-start; background: var(--navy-dk); padding: 12px 0; margin-top: 8px; }
            .nav-links.active { display: flex; }
            .hamburger { display: flex; }
            .header { flex-wrap: wrap; }
            .nav-links a { padding: 8px 16px; width: 100%; border-bottom: none; }
            .nav-links .btn-primary { margin: 0 16px; width: auto; }
        }
        .breadcrumb { padding: 10px 20px; font-size: 13px; color: #555; background: #fafafa; border-bottom: 1px solid var(--line); }
        .breadcrumb a { color: var(--link); }
        .main { flex: 1; padding: 20px; }
        .hero { text-align: center; margin-bottom: 32px; }
        h1 { font-size: 28px; color: var(--navy); margin-bottom: 8px; line-height: 1.2; }
        .hero p { font-size: 16px; color: #333; margin-bottom: 16px; }
        .hero .trust { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; font-size: 13px; color: #555; margin: 12px 0 20px; }
        .btn { display: inline-block; font-weight: bold; padding: 12px 24px; font-size: 16px; text-align: center; border: none; cursor: pointer; border-radius: 0; text-decoration: none; line-height: 1.2; transition: background 0.2s; }
        .btn-primary { background: var(--navy); color: #fff; }
        .btn-primary:hover { background: var(--navy-dk); text-decoration: none; }
        .btn-success { background: var(--green); color: #fff; }
        .btn-success:hover { background: #2e5e17; text-decoration: none; }
        .btn-secondary { background: var(--grey); color: #222; border: 1px solid var(--line); }
        .btn-secondary:hover { background: #e0e0e0; text-decoration: none; }
        .section { margin: 32px 0; }
        h2 { font-size: 22px; color: var(--navy); margin-bottom: 12px; font-weight: bold; }
        .intro-text { font-size: 15px; max-width: 800px; }
        .steps { margin: 16px 0 24px; padding-left: 20px; }
        .steps li { margin-bottom: 12px; font-size: 15px; }
        .spec-table { width: 100%; border-collapse: collapse; margin: 16px 0; background: #fcfcfc; border: 1px solid var(--line); }
        .spec-table th, .spec-table td { padding: 10px 14px; border: 1px solid var(--line); text-align: left; font-size: 14px; }
        .spec-table th { background: #f0f0f0; color: var(--navy); }
        .feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; margin: 20px 0; }
        .feature-card { background: #fafafa; border: 1px solid var(--line); padding: 16px; display: flex; align-items: flex-start; gap: 12px; border-radius: 0; }
        .feature-card svg { flex-shrink: 0; margin-top: 2px; }
        .feature-card h4 { font-size: 16px; margin-bottom: 4px; color: var(--navy); }
        .problem-list { list-style-type: disc; padding-left: 24px; margin: 12px 0; }
        .problem-list li { margin-bottom: 8px; font-size: 14px; }
        .related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; margin: 16px 0; }
        .related-grid a { display: block; padding: 8px 12px; background: #f9f9f9; border: 1px solid var(--line); color: var(--navy); font-weight: 600; text-decoration: none; }
        .related-grid a:hover { background: #e8ecf1; text-decoration: none; }
        details { margin-bottom: 14px; background: #fafafa; border: 1px solid var(--line); padding: 10px 14px; }
        details[open] { background: #fff; }
        summary { font-weight: bold; cursor: pointer; font-size: 15px; color: var(--navy); list-style: none; }
        summary::-webkit-details-marker { display: none; }
        summary:focus-visible { outline: 2px solid var(--navy); outline-offset: 2px; }
        .cta-band { text-align: center; background: #f0f4fa; padding: 28px 20px; margin: 32px 0 16px; border: 1px solid var(--line); }
        .cta-band h2 { margin-bottom: 12px; }
        footer { background: #f0f0f0; color: #333; padding: 20px; font-size: 13px; border-top: 1px solid var(--line); margin-top: auto; }
        footer a { color: var(--navy); font-weight: 600; }
        .footer-links { display: flex; flex-wrap: wrap; gap: 16px 24px; margin: 12px 0 16px; }
        .footer-disclaimer { margin-top: 12px; color: #555; font-size: 12px; }
        .sticky-mobile-cta { display: none; position: fixed; bottom: 0; left: 0; width: 100%; background: #fff; padding: 8px 16px; box-shadow: 0 -2px 8px rgba(0,0,0,0.1); z-index: 99; text-align: center; border-top: 1px solid var(--line); }
        .sticky-mobile-cta .btn { width: 100%; padding: 14px; font-size: 16px; }
        @media (max-width: 700px) {
            .sticky-mobile-cta { display: block; }
            body { padding-bottom: 70px; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 24px; }
            .hero .trust { flex-direction: column; gap: 8px; }
            .feature-grid { grid-template-columns: 1fr; }
        }