:root {
  --gd-orange: #f26722;
  --gd-orange-dark: #c9470b;
  --gd-ink: #18202a;
  --gd-muted: #66717e;
  --gd-soft: #fff5ee;
  --gd-line: #e7e9ed;
  --gd-white: #ffffff;
}
.gd-body { background: #fff; color: var(--gd-ink); }
.gd-main { min-height: 70vh; }
.gd-topic-nav {
  display: flex; gap: 8px; overflow-x: auto; padding: 14px max(20px, calc((100% - 1180px)/2));
  border-bottom: 1px solid var(--gd-line); background: #fff; position: sticky; top: 72px; z-index: 20;
}
.gd-topic-nav a {
  white-space: nowrap; text-decoration: none; color: var(--gd-ink); border: 1px solid var(--gd-line);
  border-radius: 6px; padding: 9px 13px; font-size: 13px; font-weight: 700;
}
.gd-topic-nav a:hover { border-color: var(--gd-orange); color: var(--gd-orange-dark); }
.gd-hero {
  max-width: 1180px; margin: 0 auto; padding: 64px 22px 44px; display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, .65fr); gap: 42px; align-items: center;
}
.gd-kicker, .gd-section-head span, .gd-side-card > span {
  color: var(--gd-orange-dark); font-size: 12px; font-weight: 900; letter-spacing: .11em; text-transform: uppercase;
}
.gd-hero h1 { font-size: clamp(38px, 6vw, 68px); line-height: 1.02; letter-spacing: -.05em; margin: 14px 0 20px; max-width: 880px; }
.gd-hero-copy > p { max-width: 760px; font-size: 18px; line-height: 1.75; color: var(--gd-muted); }
.gd-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.gd-actions a, .gd-side-card a, .gd-official-note a {
  display: inline-flex; align-items: center; justify-content: center; text-decoration: none; border-radius: 6px;
  padding: 12px 17px; font-weight: 800; font-size: 14px;
}
.gd-primary, .gd-side-card a { background: var(--gd-orange); color: #fff; }
.gd-secondary { border: 1px solid var(--gd-line); color: var(--gd-ink); background: #fff; }
.gd-summary { background: var(--gd-soft); border: 1px solid #ffd8c4; border-radius: 8px; padding: 26px; }
.gd-summary strong { font-size: 20px; }
.gd-summary ul { margin: 18px 0 0; padding-left: 20px; color: #4c5965; line-height: 1.8; }
.gd-breadcrumbs { max-width: 1180px; margin: 0 auto; padding: 0 22px 28px; display: flex; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--gd-muted); }
.gd-breadcrumbs a { color: var(--gd-orange-dark); text-decoration: none; font-weight: 700; }
.gd-article { max-width: 1180px; margin: 0 auto; padding: 0 22px 60px; display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 46px; align-items: start; }
.gd-content-section { border-top: 1px solid var(--gd-line); padding: 28px 0; }
.gd-content-section h2, .gd-official-note h2 { font-size: 28px; letter-spacing: -.025em; margin: 0 0 13px; }
.gd-content-section p, .gd-official-note p { margin: 0; font-size: 16px; color: #4f5c68; line-height: 1.85; }
.gd-checklist ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; padding: 0; list-style: none; }
.gd-checklist li { border: 1px solid var(--gd-line); border-radius: 6px; padding: 14px; font-weight: 700; font-size: 14px; }
.gd-checklist li::before { content: "✓"; margin-right: 9px; color: var(--gd-orange-dark); }
.gd-side-card { position: sticky; top: 140px; border: 1px solid var(--gd-line); border-radius: 8px; padding: 26px; box-shadow: 0 14px 35px rgba(18, 30, 44, .07); }
.gd-side-card h2 { margin: 10px 0 12px; font-size: 25px; line-height: 1.15; }
.gd-side-card p { color: var(--gd-muted); line-height: 1.65; }
.gd-side-card a { margin-top: 10px; }
.gd-official-note { background: #f6f8fa; border: 1px solid var(--gd-line); border-radius: 8px; padding: 24px; margin-top: 20px; }
.gd-official-note div { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.gd-official-note a { border: 1px solid var(--gd-line); background: white; color: var(--gd-ink); padding: 10px 12px; }
.gd-related { background: #f7f8fa; border-top: 1px solid var(--gd-line); padding: 58px max(22px, calc((100% - 1180px)/2)) 70px; }
.gd-section-head h2 { margin: 8px 0 24px; font-size: 34px; letter-spacing: -.03em; }
.gd-related-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.gd-related-card { display: flex; flex-direction: column; gap: 8px; min-height: 180px; background: #fff; border: 1px solid var(--gd-line); border-radius: 8px; padding: 22px; text-decoration: none; color: var(--gd-ink); }
.gd-related-card:hover { border-color: var(--gd-orange); transform: translateY(-2px); }
.gd-related-card span { color: var(--gd-orange-dark); text-transform: uppercase; letter-spacing: .08em; font-size: 11px; font-weight: 900; }
.gd-related-card strong { font-size: 19px; line-height: 1.25; }
.gd-related-card small { color: var(--gd-muted); line-height: 1.55; font-size: 13px; }
.gd-home-feature {
  max-width: 1180px; margin: 54px auto; padding: 32px; border: 1px solid #ffd8c4; background: var(--gd-soft);
  border-radius: 8px; display: flex; align-items: center; justify-content: space-between; gap: 28px;
}
.gd-home-feature h2 { margin: 8px 0 10px; font-size: 34px; }
.gd-home-feature p { margin: 0; color: var(--gd-muted); line-height: 1.7; max-width: 700px; }
.gd-home-feature a { flex: 0 0 auto; text-decoration: none; background: var(--gd-orange); color: #fff; padding: 13px 18px; border-radius: 6px; font-weight: 800; }
@media (max-width: 900px) {
  .gd-hero, .gd-article { grid-template-columns: 1fr; }
  .gd-side-card { position: static; }
  .gd-related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gd-topic-nav { top: 62px; }
}
@media (max-width: 620px) {
  .gd-hero { padding-top: 38px; }
  .gd-related-grid, .gd-checklist ul { grid-template-columns: 1fr; }
  .gd-home-feature { margin: 32px 16px; padding: 24px; flex-direction: column; align-items: flex-start; }
}