/* PDF Forensic Checker — guides (static article pages) */
:root {
  --paper: #fcfbf8; --panel: #ffffff; --inset: #f4f3ee;
  --ink: #141c28; --border: #e3e1d8; --border-strong: #c9c6ba;
  --text: #1a2330; --dim: #545d6c; --faint: #79818f;
  --accent: #1d4fd7; --accent-deep: #163aa0; --accent-soft: #e9eefd;
  --mark: #ffe583; --mark-soft: #fff5cc;
  --ok: #1a7f4e; --bad: #b03226; --bad-soft: #f9e5e3;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --sans: "IBM Plex Sans", -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --shadow: 0 1px 2px rgba(20,28,40,.06), 0 4px 14px rgba(20,28,40,.04);
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--paper); color: var(--text); font-family: var(--sans);
  font-size: 17px; line-height: 1.75; -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* topbar */
.g-topbar {
  background: var(--ink); color: #fff; position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 12px; padding: 0 20px; height: 52px;
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(90deg, #1d4fd7, #6d5df6, #ffe583) 1;
}
.g-topbar .g-brand {
  display: flex; align-items: center; gap: 10px; color: #fff;
  font-family: var(--serif); font-weight: 650; font-size: 17px;
  letter-spacing: -0.2px; white-space: nowrap;
}
.g-topbar .g-brand:hover { text-decoration: none; }
.g-topbar img { width: 24px; height: 24px; }
.g-topbar .g-spacer { flex: 1; }
.g-topbar .g-cta {
  background: linear-gradient(135deg, #1d4fd7, #6d5df6); color: #fff;
  padding: 7px 15px; border-radius: 8px; font-size: 13.5px; font-weight: 600;
  white-space: nowrap;
}
.g-topbar .g-cta:hover { text-decoration: none; filter: brightness(1.1); }
.g-topbar .g-nav-link { color: #cdd6e4; font-size: 13.5px; white-space: nowrap; }

/* layout */
.g-wrap { max-width: 720px; margin: 0 auto; padding: 0 20px 60px; }
.g-wrap.wide { max-width: 900px; }
.g-crumbs { font-size: 12.5px; color: var(--faint); margin: 26px 0 0; }
.g-crumbs a { color: var(--faint); }
.g-kicker {
  font-family: var(--mono); font-size: 10.5px; font-weight: 700;
  letter-spacing: 3px; color: var(--accent); margin: 30px 0 14px;
}
h1 {
  font-family: var(--serif); font-weight: 650; letter-spacing: -0.6px;
  font-size: clamp(30px, 4.5vw, 42px); line-height: 1.14; margin: 0 0 14px;
}
.g-standfirst { font-size: 19px; line-height: 1.65; color: var(--dim); margin: 0 0 10px; }
.g-byline {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  font-size: 13px; color: var(--faint);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 12px 0; margin: 22px 0 34px;
}
.g-byline b { color: var(--text); font-weight: 600; }
.g-byline .dot { color: var(--border-strong); }

/* article body */
article h2 {
  font-family: var(--serif); font-weight: 650; letter-spacing: -0.3px;
  font-size: 26px; line-height: 1.25; margin: 44px 0 12px;
}
article h3 { font-size: 18px; margin: 30px 0 8px; }
article p { margin: 0 0 18px; }
article ul, article ol { margin: 0 0 18px; padding-left: 24px; }
article li { margin-bottom: 8px; }
article mark { background: var(--mark); padding: 0 3px; border-radius: 2px; }
article blockquote {
  margin: 26px 0; padding: 4px 22px; border-left: 3px solid var(--accent);
  background: var(--accent-soft); border-radius: 0 8px 8px 0;
  font-size: 16px; color: var(--ink);
}
article code {
  font-family: var(--mono); font-size: 0.85em; background: var(--inset);
  border: 1px solid var(--border); border-radius: 4px; padding: 1px 6px;
}
.g-callout {
  border: 1px solid var(--border); border-left: 4px solid var(--accent);
  background: var(--panel); border-radius: 10px; box-shadow: var(--shadow);
  padding: 18px 22px; margin: 34px 0; font-size: 15.5px;
}
.g-callout .t {
  font-family: var(--mono); font-size: 10px; font-weight: 700;
  letter-spacing: 2.5px; color: var(--accent); margin-bottom: 6px;
}
.g-callout p { margin: 0 0 10px; }
.g-callout p:last-child { margin: 0; }

/* index cards */
.g-cards { display: grid; gap: 16px; margin-top: 34px; }
.g-card {
  display: block; border: 1px solid var(--border); border-radius: 12px;
  background: var(--panel); box-shadow: var(--shadow); padding: 22px 24px;
  color: var(--text); transition: box-shadow .18s, transform .18s, border-color .18s;
}
.g-card:hover {
  text-decoration: none; transform: translateY(-2px); border-color: #b9c6ee;
  box-shadow: 0 2px 4px rgba(20,28,40,.08), 0 14px 30px rgba(20,28,40,.10);
}
.g-card .n {
  font-family: var(--mono); font-size: 10.5px; font-weight: 700;
  letter-spacing: 2.5px; color: var(--accent);
}
.g-card h2 {
  font-family: var(--serif); font-weight: 650; font-size: 21px;
  letter-spacing: -0.3px; line-height: 1.3; margin: 8px 0 8px;
}
.g-card p { margin: 0; font-size: 14.5px; line-height: 1.65; color: var(--dim); }
.g-card .more { display: inline-block; margin-top: 12px; font-size: 13px; font-weight: 600; color: var(--accent); }

/* footer */
.g-foot {
  border-top: 1px solid var(--border); margin-top: 60px; padding: 22px 0 0;
  font-size: 13px; color: var(--faint);
  display: flex; flex-wrap: wrap; gap: 8px 18px;
}
.g-foot a { color: var(--dim); }

/* next-article links */
.g-next {
  display: grid; gap: 12px; margin: 40px 0 0;
}
.g-next a {
  border: 1px solid var(--border); border-radius: 10px; background: var(--panel);
  padding: 14px 18px; color: var(--text); font-size: 15px; box-shadow: var(--shadow);
}
.g-next a:hover { text-decoration: none; border-color: #b9c6ee; }
.g-next .lbl {
  display: block; font-family: var(--mono); font-size: 9.5px; font-weight: 700;
  letter-spacing: 2px; color: var(--faint); margin-bottom: 3px;
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .g-topbar .g-nav-link { display: none; }
}