:root {
    --display: "Montserrat", "Segoe UI", Arial, sans-serif;
    --body: "Open Sans", "Segoe UI", Arial, sans-serif;
    --bg: #f4f7fb;
    --card: #ffffff;
    --ink: #1A1617;
    --muted: #5a6068;
    --accent: #3471C1;
    --accent-dark: #28589b;
    --line: #dbe3ee;
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    font-family: var(--body);
    color: var(--ink);
    background: var(--bg);
    line-height: 1.65;
  }
  .wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }
  header.hero {
    background: linear-gradient(135deg, #28589b, #3471C1);
    color: #fff;
    padding: 56px 0 48px;
  }
  header.hero h1 { margin: 0 0 6px; font-size: 2.4rem; letter-spacing: .5px; }
  header.hero p { margin: 0; font-size: 1.1rem; opacity: .95; }
  nav.toc {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 16px 22px;
    margin-top: 28px;
    font-family: var(--body);
    font-size: .95rem;
  }
  nav.toc strong { display: block; margin-bottom: 6px; }
  nav.toc a { color: var(--accent-dark); text-decoration: none; margin-right: 14px; display: inline-block; padding: 2px 0; }
  nav.toc a:hover { text-decoration: underline; }
  section { padding: 36px 0 8px; }
  h2 { font-size: 1.6rem; margin: 0 0 12px; color: var(--accent-dark); }
  h3 { margin: 0 0 6px; font-size: 1.15rem; }
  p { margin: 0 0 14px; }
  .card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 20px 22px;
    margin-bottom: 16px;
  }
  .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
  .grid .card { margin-bottom: 0; }
  ul.clean { padding-left: 20px; margin: 0 0 14px; }
  ul.clean li { margin-bottom: 8px; }
  ol.steps { padding-left: 0; margin: 0; list-style: none; counter-reset: step; }
  ol.steps li {
    counter-increment: step;
    position: relative;
    padding: 14px 18px 14px 62px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 10px;
    margin-bottom: 12px;
  }
  ol.steps li::before {
    content: counter(step);
    position: absolute;
    left: 16px; top: 12px;
    width: 34px; height: 34px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-family: var(--body);
    font-weight: 700;
    text-align: center;
    line-height: 34px;
  }
  ol.steps li strong { display: block; }
  .commandments li { margin-bottom: 8px; }
  .calc label { display: block; font-family: var(--body); font-size: .9rem; margin: 10px 0 4px; color: var(--muted); }
  .calc input, .calc select {
    width: 100%; padding: 10px 12px; font-size: 1rem;
    border: 1px solid var(--line); border-radius: 8px; background: #fff;
    font-family: var(--body);
  }
  .calc .row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
  .result {
    margin-top: 16px; padding: 14px 16px; border-radius: 8px;
    background: #eaf1fb; border: 1px solid #c9daf2;
    font-family: var(--body);
  }
  .result .big { font-size: 1.6rem; font-weight: 700; color: var(--accent-dark); }
  .btn {
    display: inline-block;
    padding: 13px 22px;
    border-radius: 8px;
    background: var(--accent);
    color: #fff;
    text-decoration: none;
    font-family: var(--body);
    font-weight: 600;
    font-size: .98rem;
  }
  .btn:hover, .btn:focus { background: var(--accent-dark); }
  .btn.alt { background: transparent; color: var(--accent-dark); border: 2px solid var(--accent); }
  .btn.alt:hover, .btn.alt:focus { background: var(--accent); color: #fff; }
  .buttons { display: flex; flex-wrap: wrap; gap: 12px; margin: 18px 0 8px; }
  .note { color: var(--muted); font-size: .95rem; }
  footer {
    margin-top: 40px;
    padding: 28px 0 40px;
    border-top: 1px solid var(--line);
    font-family: var(--body);
    font-size: .92rem;
    color: var(--muted);
  }
  footer a { color: var(--accent-dark); }
  @media (max-width: 520px) {
    header.hero h1 { font-size: 1.9rem; }
    .btn { width: 100%; text-align: center; }
    ol.steps li { padding-left: 58px; }
  }
  .footbrand { background: #000; margin-top: 40px; }
  .footbrand .wrap { padding-top: 14px; padding-bottom: 14px; }
  .footbrand img { display: block; height: 84px; width: auto; max-width: 100%; }
  footer { margin-top: 0 !important; }

  /* shared additions */
  .brandbar { background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
  .brandbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 10px; padding-bottom: 10px; flex-wrap: wrap; }
  .brandbar img { display: block; height: 64px; width: auto; max-width: 100%; }
  .sitenav { display: flex; flex-wrap: wrap; gap: 4px 18px; font-family: var(--body); font-size: .95rem; }
  .sitenav a { color: var(--ink); text-decoration: none; padding: 6px 0; border-bottom: 2px solid transparent; }
  .sitenav a:hover { color: var(--accent-dark); border-bottom-color: var(--line); }
  .sitenav a[aria-current="page"] { color: var(--accent-dark); border-bottom-color: var(--accent); font-weight: 600; }
  .sitenav a.cta { background: var(--accent); color: #fff; padding: 7px 14px; border-radius: 6px; border-bottom: 0; }
  .sitenav a.cta:hover { background: var(--accent-dark); color: #fff; }
  .card > ul.clean:last-child { margin-bottom: 6px; }
  ul.resources { padding-left: 20px; margin: 0; }
  ul.resources li { margin-bottom: 10px; }
  .inspector .meta { color: var(--muted); font-family: var(--body); font-size: .95rem; }
  .inspector .meta a { color: var(--accent-dark); }
  .footbrand { background: #000; margin-top: 40px; }
  .footbrand .wrap { padding-top: 14px; padding-bottom: 14px; }
  .footbrand img { display: block; height: 84px; width: auto; max-width: 100%; }
  footer { margin-top: 0 !important; }
  a { color: var(--accent-dark); }
  .btn, .btn:hover, .btn:focus { color: #fff; }
  .btn.alt { color: var(--accent-dark); }
  .btn.alt:hover, .btn.alt:focus { color: #fff; }
  @media (max-width: 640px) { .brandbar { position: static; } .brandbar img { height: 52px; } .sitenav { gap: 2px 14px; font-size: .9rem; } }

  h1, h2, h3, .btn, .sitenav, nav.toc strong { font-family: var(--display); }
  h1, h2 { letter-spacing: 0; }
  header.hero h1 { font-weight: 700; }
  h2 { font-weight: 700; }
  .eho { display: inline-block; margin-top: 10px; padding: 4px 10px; border: 1px solid var(--line); border-radius: 4px; font-weight: 600; color: var(--ink); }
  .footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 8px 32px; }
  footer a { color: var(--accent-dark); }
  .textcta { margin-top: 6px; }