:root {
      --ink: #16263a;
      --muted: #5c6b7c;
      --blue: #176cb5;
      --blue-dark: #104f86;
      --cyan: #e7f5ff;
      --line: #d8e8f4;
      --paper: #ffffff;
      --wash: #f4f9fd;
      --shadow: 0 18px 50px rgba(30, 71, 112, .10);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: linear-gradient(180deg, #eef7ff 0, #f8fbfe 380px, #fff 820px);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      line-height: 1.72;
    }
    a { color: var(--blue); text-underline-offset: 3px; }
    a:hover { color: var(--blue-dark); }
    .page { width: min(1140px, calc(100% - 36px)); margin: 0 auto; padding: 24px 0 70px; }
    .crumbs { margin: 2px 0 18px; color: #6b7b8c; font-size: 13px; }
    .crumbs a { color: #56718b; text-decoration: none; }
    .hero {
      display: grid;
      grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr);
      gap: 34px;
      align-items: center;
      padding: clamp(26px, 5vw, 54px);
      overflow: hidden;
      border: 1px solid #dbeaf5;
      border-radius: 28px;
      background: rgba(255,255,255,.94);
      box-shadow: var(--shadow);
    }
    .eyebrow {
      display: inline-flex;
      gap: 9px;
      align-items: center;
      padding: 7px 12px;
      border: 1px solid #cde5f7;
      border-radius: 999px;
      color: #17669f;
      background: #f1f9ff;
      font-size: 12px;
      font-weight: 800;
      letter-spacing: .08em;
      text-transform: uppercase;
    }
    .eyebrow::before { width: 8px; height: 8px; border-radius: 50%; background: #39a5d9; content: ""; }
    h1 { max-width: 720px; margin: 18px 0 14px; font-size: clamp(32px, 4.7vw, 54px); line-height: 1.1; letter-spacing: -.035em; }
    .lede { max-width: 660px; margin: 0; color: var(--muted); font-size: clamp(16px, 1.8vw, 19px); }
    .byline { display: flex; flex-wrap: wrap; gap: 9px 18px; margin: 23px 0; color: #718091; font-size: 13px; }
    .cta {
      display: inline-flex;
      justify-content: center;
      align-items: center;
      gap: 10px;
      min-height: 48px;
      padding: 12px 20px;
      border-radius: 12px;
      color: #fff;
      background: linear-gradient(135deg, #1979bf, #145d9d);
      box-shadow: 0 8px 20px rgba(23,108,181,.2);
      font-weight: 750;
      text-decoration: none;
      transition: transform .18s ease, box-shadow .18s ease;
    }
    .cta:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 12px 24px rgba(23,108,181,.25); }
    .hero-figure { margin: 0; padding: 12px; border: 1px solid #dfedf7; border-radius: 22px; background: #f4f9fd; }
    .hero-figure img { display: block; width: 100%; height: auto; border-radius: 14px; object-fit: contain; }
    .hero-figure figcaption { padding: 10px 4px 2px; color: #728195; font-size: 12px; text-align: center; }
    .layout { display: grid; grid-template-columns: minmax(0, 1fr) 275px; gap: 28px; align-items: start; margin-top: 30px; }
    article, .side-card { border: 1px solid #e2ebf2; border-radius: 20px; background: var(--paper); box-shadow: 0 10px 34px rgba(33, 65, 98, .055); }
    article { padding: clamp(23px, 4vw, 44px); min-width: 0; }
    article p { margin: 0 0 17px; }
    article h2 { margin: 44px 0 14px; padding-top: 5px; font-size: clamp(24px, 3vw, 31px); line-height: 1.25; letter-spacing: -.02em; }
    article h3 { margin: 24px 0 8px; font-size: 19px; line-height: 1.35; }
    .intro { color: #3b5064; font-size: 17px; }
    .toc { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 26px 0 30px; }
    .toc a { display: block; padding: 11px 13px; border: 1px solid var(--line); border-radius: 11px; color: #36556e; background: #f9fcff; font-size: 14px; font-weight: 650; text-decoration: none; }
    .toc a:hover { border-color: #98c9ea; background: #eff8ff; }
    .note, .caution { margin: 20px 0; padding: 16px 18px; border-radius: 13px; }
    .note { border-left: 4px solid #48a1d4; background: #eff8ff; color: #355773; }
    .caution { border-left: 4px solid #e5a84b; background: #fff9ef; color: #69522d; font-size: 14px; }
    .facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 22px 0; }
    .fact { padding: 16px; border: 1px solid #dfedf6; border-radius: 14px; background: var(--wash); }
    .fact strong { display: block; margin-bottom: 3px; color: #185e95; font-size: 18px; }
    .fact span { color: #607185; font-size: 13px; }
    .table-wrap { overflow-x: auto; margin: 20px 0; border: 1px solid var(--line); border-radius: 14px; }
    table { width: 100%; border-collapse: collapse; min-width: 610px; }
    th, td { padding: 13px 15px; border-bottom: 1px solid #e7eef4; text-align: left; vertical-align: top; }
    th { color: #215b88; background: #eef7fd; font-size: 13px; letter-spacing: .02em; }
    td { color: #465a6f; font-size: 14px; }
    tr:last-child td { border-bottom: 0; }
    .steps { display: grid; gap: 12px; margin: 20px 0; padding: 0; list-style: none; counter-reset: steps; }
    .steps li { position: relative; padding: 15px 16px 15px 54px; border: 1px solid #e0ebf3; border-radius: 13px; background: #fbfdff; counter-increment: steps; }
    .steps li::before { position: absolute; left: 16px; top: 14px; display: grid; width: 26px; height: 26px; place-items: center; border-radius: 50%; color: #fff; background: #2583bb; font-size: 13px; font-weight: 800; content: counter(steps); }
    .checklist { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 20px 0; }
    .check { padding: 15px; border: 1px solid #e1ebf2; border-radius: 13px; background: #fbfdff; }
    .check strong { display: block; margin-bottom: 4px; color: #205c8c; }
    .check span { color: #617186; font-size: 14px; }
    details { margin: 10px 0; padding: 14px 16px; border: 1px solid #dfebf3; border-radius: 12px; background: #fbfdff; }
    summary { color: #254b6a; font-weight: 750; cursor: pointer; }
    details p { margin: 12px 0 2px; color: #586c80; }
    .final-cta { margin-top: 36px; padding: 25px; border-radius: 17px; color: #fff; background: linear-gradient(125deg, #145e9d, #2488bd); }
    .final-cta h2 { margin: 0 0 9px; padding: 0; font-size: 25px; }
    .final-cta p { margin-bottom: 17px; color: #eaf6ff; }
    .final-cta .cta { color: #165e99; background: #fff; box-shadow: none; }
    .final-cta .cta:hover { color: #104f86; }
    .source-note { margin-top: 22px; color: #748293; font-size: 12px; }
    .side-card { position: sticky; top: 20px; padding: 22px; }
    .side-card h2 { margin: 0 0 10px; font-size: 19px; line-height: 1.35; }
    .side-card p { margin: 0 0 15px; color: #63758a; font-size: 14px; }
    .side-card .cta { display: flex; width: 100%; padding-inline: 12px; text-align: center; }
    .side-list { margin: 18px 0 0; padding: 16px 0 0 19px; border-top: 1px solid #e4edf4; color: #617186; font-size: 13px; }
    .side-list li { margin: 7px 0; }
    .footer { margin-top: 24px; color: #7a8795; font-size: 12px; text-align: center; }
    @media (max-width: 850px) {
      .hero { grid-template-columns: 1fr; }
      .hero-figure { max-width: 520px; margin: 0 auto; }
      .layout { grid-template-columns: 1fr; }
      .side-card { position: static; order: -1; }
    }
    @media (max-width: 560px) {
      .page { width: min(100% - 22px, 720px); padding-top: 13px; }
      .hero { gap: 22px; padding: 22px 17px; border-radius: 20px; }
      h1 { font-size: 33px; }
      article { padding: 22px 17px; }
      .toc, .facts, .checklist { grid-template-columns: 1fr; }
      article h2 { margin-top: 36px; }
      .side-card { padding: 19px; }
    }