*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --bg: #F5E6D0;
      --bg-card: #ffffff;
      --bg-highlight: #ecd9bd;
      --border: rgba(30,30,30,0.13);
      --text: #1E1E1E;
      --text-muted: #5a5a5a;
      --accent: #E8762B;
      --accent-hover: #c9681a;
      --accent-light: rgba(232,118,43,0.09);
      --ink: #1E1E1E;
    }

    html { scroll-behavior: smooth; }

    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

    a { color: var(--accent); text-decoration: none; }
    a:hover { color: #E8762B; text-decoration: underline; }

    /* NAV */
    nav {
      position: sticky; top: 0; z-index: 100;
      background: #1E1E1E;
      border-bottom: 1px solid rgba(255,255,255,0.06);
      padding: 0 24px;
    }
    .nav-inner {
      max-width: 800px; margin: 0 auto;
      display: flex; align-items: center; justify-content: space-between;
      height: 56px;
    }
    .nav-logo {
      font-family: 'Oswald', sans-serif;
      font-weight: 700; font-size: 15px; color: #fff;
      text-transform: uppercase; letter-spacing: 0.06em;
    }
    .nav-logo span { color: #E8762B; }
    .nav-cta {
      background: #E8762B; color: #fff;
      padding: 7px 16px; border-radius: 8px;
      font-family: 'Oswald', sans-serif;
      font-size: 13px; font-weight: 600;
      text-transform: uppercase; letter-spacing: 0.06em;
      white-space: nowrap; transition: opacity 0.2s;
    }
    .nav-cta:hover { opacity: 0.85; text-decoration: none; color: #fff; }
    .site-header {
      position: sticky; top: 0; z-index: 100;
      background: #1E1E1E; border-bottom: 1px solid rgba(255,255,255,0.06);
      display: flex; align-items: center; height: 56px; padding: 0 24px; gap: 0;
    }
    .site-header__back {
      font-family: 'Oswald', sans-serif; font-weight: 700; font-size: 14px;
      color: #fff !important; text-transform: uppercase; letter-spacing: 0.06em;
      flex-shrink: 0; text-decoration: none !important;
    }
    .site-header__back:hover { color: rgba(255,255,255,0.8) !important; text-decoration: none !important; }
    .nav-links { display: flex; align-items: center; margin-left: 24px; margin-right: auto; }
    .nav-links a { font-size: 13px; color: rgba(255,255,255,0.65); margin-left: 16px; text-decoration: none; white-space: nowrap; }
    .nav-links a:hover { color: #fff; }
    .nav-links a.active { color: #E8762B; }
    .nav-burger { display: none; flex-direction: column; justify-content: center; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; margin-left: 12px; }
    .nav-burger span { display: block; width: 22px; height: 2px; background: rgba(255,255,255,0.8); border-radius: 2px; transition: all 0.25s; }
    .nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-burger.open span:nth-child(2) { opacity: 0; }
    .nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .nav-mobile { display: none; flex-direction: column; background: #1E1E1E; border-top: 1px solid rgba(255,255,255,0.06); max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
    .nav-mobile.open { max-height: 300px; }
    .nav-mobile a { padding: 13px 24px; color: rgba(255,255,255,0.7); font-size: 14px; border-bottom: 1px solid rgba(255,255,255,0.04); text-decoration: none; display: block; }
    .nav-mobile a:hover { color: #fff; }
    .nav-mobile a.active { color: #E8762B; }
    @media (max-width: 600px) {
      .nav-links { display: none !important; }
      .nav-cta { display: none !important; }
      .nav-burger { display: flex !important; }
      .nav-mobile { display: flex !important; }
    }

    /* LAYOUT */
    .container { max-width: 800px; margin: 0 auto; padding: 0 24px; }
    .article-wrap { max-width: 800px; margin: 0 auto; padding: 0 24px; }

    /* HERO */
    .hero {
      padding: 64px 0 48px;
      border-bottom: 1px solid var(--border);
    }
    .hero-breadcrumb {
      font-family: 'JetBrains Mono', monospace;
      font-size: 12px; color: var(--text-muted);
      margin-bottom: 20px; letter-spacing: 0.05em;
    }
    .hero-breadcrumb a { color: var(--text-muted); }
    .hero-breadcrumb a:hover { color: var(--text); text-decoration: none; }
    h1 {
      font-family: 'Oswald', sans-serif;
      font-size: clamp(22px, 4.5vw, 38px);
      font-weight: 700; text-transform: uppercase;
      line-height: 1.15; letter-spacing: -0.01em;
      margin-bottom: 20px; color: var(--text);
      word-break: break-word;
    }
    .hero-intro {
      font-size: 17px; color: var(--text-muted); line-height: 1.7;
    }

    /* ARTICLE */
    article { padding: 48px 0 80px; }

    h2 {
      font-family: 'Oswald', sans-serif;
      font-size: clamp(16px, 3vw, 24px);
      font-weight: 700; text-transform: uppercase;
      letter-spacing: 0.01em;
      margin: 52px 0 16px; padding-top: 8px;
      border-top: 2px solid #E8762B;
      display: inline-block;
      color: var(--text);
    }
    h2:first-child { margin-top: 0; }

    h3 {
      font-family: 'Oswald', sans-serif;
      font-size: 16px; font-weight: 600;
      text-transform: uppercase; letter-spacing: 0.04em;
      margin: 32px 0 12px; color: var(--text);
    }

    p { margin-bottom: 16px; color: #3a3a3a; }

    ul, ol { margin: 0 0 20px 0; padding-left: 0; list-style: none; }
    ul li, ol li { position: relative; padding: 5px 0 5px 24px; color: #3a3a3a; }
    ul li::before { content: '\2192'; position: absolute; left: 0; color: #E8762B; font-size: 14px; }
    ol { counter-reset: item; }
    ol li { counter-increment: item; }
    ol li::before { content: counter(item) '.'; position: absolute; left: 0; color: #E8762B; font-weight: 700; font-size: 14px; }
    strong { color: var(--text); font-weight: 600; }

    /* TABLE */
    .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 24px 0; border-radius: 10px; border: 1px solid var(--border); }
    table { width: 100%; border-collapse: collapse; font-size: 14px; }
    th {
      background: #1E1E1E; color: rgba(255,255,255,0.9);
      font-family: 'Oswald', sans-serif; font-weight: 600;
      text-transform: uppercase; letter-spacing: 0.06em; font-size: 12px;
      text-align: left; padding: 12px 16px;
      border-bottom: 1px solid var(--border); white-space: nowrap;
    }
    td { padding: 11px 16px; border-bottom: 1px solid var(--border); color: var(--text-muted); vertical-align: top; }
    tr:last-child td { border-bottom: none; }
    tr:nth-child(even) td { background: var(--bg-highlight); }
    td:first-child { color: var(--text); font-weight: 500; }

    /* CARDS */
    .card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin: 24px 0; }
    .card-accent { border-left: 3px solid #E8762B; }
    .card-gold { border-left: 3px solid #2a9d5c; }
    .card p { margin-bottom: 8px; }
    .card p:last-child { margin-bottom: 0; }

    /* EXPERT TIP */
    .expert-tip { background: rgba(232,118,43,0.07); border: 1px solid rgba(232,118,43,0.2); border-radius: 10px; padding: 18px 20px; margin: 24px 0; }
    .expert-tip-label { font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; color: #E8762B; margin-bottom: 8px; }
    .expert-tip p { color: #3a3a3a; margin-bottom: 0; font-size: 15px; }

    /* STAT */
    .stat-block { background: var(--bg-highlight); border: 1px solid var(--border); border-radius: 10px; padding: 18px 20px; margin: 24px 0; font-size: 14px; color: var(--text-muted); font-style: italic; }

    /* CHECKLIST */
    .checklist li::before { content: '\2713'; color: #2a9d5c; }

    /* DIALOG */
    .dialog { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 20px 24px; margin: 20px 0; font-size: 15px; }
    .dialog-label { font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); margin-bottom: 12px; }
    .msg { margin-bottom: 10px; }
    .msg-client { color: #3a3a3a; }
    .msg-ai { color: #E8762B; }
    .msg-role { font-size: 12px; font-weight: 600; margin-bottom: 3px; }
    .msg-client .msg-role { color: var(--text-muted); }
    .msg-ai .msg-role { color: #E8762B; }

    /* EXAMPLES */
    .example { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin: 16px 0; }
    .example-num { font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; color: #E8762B; margin-bottom: 10px; }
    .example h3 { margin: 0 0 8px; }
    .example p { margin-bottom: 8px; font-size: 15px; }

    /* FAQ */
    .faq-item { border-bottom: 1px solid var(--border); padding: 24px 0; }
    .faq-item:last-child { border-bottom: none; }
    .faq-q { font-family: 'Oswald', sans-serif; font-weight: 600; font-size: 15px; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 10px; color: var(--text); }
    .faq-a { color: var(--text-muted); font-size: 15px; line-height: 1.65; }

    /* CONCLUSION */
    .conclusion { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 32px; margin: 48px 0 0; }
    .conclusion h2 { margin-top: 0; border-top: none; display: block; }

    /* CTA */
    .cta-block { background: #1E1E1E; border-radius: 16px; padding: 40px 32px; text-align: center; margin: 48px 0; }
    .cta-block h2 { margin-top: 0; margin-bottom: 12px; font-size: clamp(18px, 3vw, 26px); color: #fff; border-top: none; display: block; }
    .cta-block p { color: rgba(255,255,255,0.7); margin-bottom: 28px; font-size: 16px; }
    .btn { display: inline-block; background: #E8762B; color: #fff; font-family: 'Oswald', sans-serif; font-weight: 600; font-size: 16px; text-transform: uppercase; letter-spacing: 0.06em; padding: 14px 32px; border-radius: 10px; text-decoration: none; transition: opacity 0.2s; }
    .btn:hover { opacity: 0.88; text-decoration: none; color: #fff; }

    /* FOOTER */
    footer { border-top: 1px solid var(--border); padding: 32px 24px; text-align: center; font-size: 14px; background: #1E1E1E; }
    footer a { color: rgba(255,255,255,0.4); }
    footer a:hover { color: #E8762B; text-decoration: none; }
    footer span, footer { color: rgba(255,255,255,0.35); }

    @media (max-width: 600px) {
      .nav-inner { padding: 0; }
      .hero { padding: 40px 0 32px; }
      h1 { font-size: 22px; }
      h2 { margin: 36px 0 12px; font-size: 16px; }
      .cta-block { padding: 28px 20px; }
      .conclusion { padding: 24px 20px; }
    }

    /* RELATED */
    .related { margin: 48px 0 0; padding-top: 32px; border-top: 1px solid var(--border); }
    .related-title { font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); margin-bottom: 16px; }
    .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .related-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 16px; text-decoration: none; display: block; transition: border-color 0.2s; }
    .related-card:hover { border-color: #E8762B; text-decoration: none; }
    .related-card-label { font-size: 11px; color: var(--text-muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.06em; }
    .related-card-title { font-size: 13px; font-weight: 600; color: var(--text); line-height: 1.4; }
    @media (max-width: 640px) { .related-grid { grid-template-columns: 1fr; } }
  /* ─── PDF Strip ─── */
  .pdf-strip { background: #E8762B; padding: 36px 24px; margin: 40px -24px 0; }
  .pdf-strip__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; max-width: 860px; margin: 0 auto; }
  .pdf-strip__label { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; color: rgba(255,255,255,0.7); margin-bottom: 6px; }
  .pdf-strip__title { font-size: 20px; font-weight: 700; color: #fff; line-height: 1.3; margin-bottom: 4px; }
  .pdf-strip__sub { font-size: 13px; color: rgba(255,255,255,0.85); }
  .pdf-strip__btn { background: #fff; color: #E8762B; padding: 13px 24px; border-radius: 8px; font-weight: 700; font-size: 14px; white-space: nowrap; text-decoration: none; flex-shrink: 0; display: inline-block; }
  .pdf-strip__btn:hover { opacity: 0.9; }
  @media (max-width: 640px) { .pdf-strip__inner { flex-direction: column; } .pdf-strip__btn { width: 100%; text-align: center; } }