.article-nav {
  min-height: 64px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: rgba(20, 20, 20, 0.96);
  border-bottom: 1px solid #2A2A2A;
}

.article-brand {
  color: var(--fg);
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.article-brand span { color: var(--accent); }

.article-back,
.article-footer a {
  color: var(--fg-muted);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.article-back:hover,
.article-footer a:hover { color: var(--accent); }

.article-nav a:focus-visible,
.article-footer a:focus-visible,
.article-copy a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 2px;
}

.article-wrap {
  width: calc(100% - 48px);
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 0 80px;
}

.article-header {
  padding-bottom: 32px;
  border-bottom: 1px solid #2A2A2A;
  margin-bottom: 32px;
}

.article-eyebrow,
.note-label {
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.article-eyebrow { margin-bottom: 14px; }

.article-header h1 {
  color: var(--fg);
  font-family: var(--font-display);
  font-size: clamp(40px, 7vw, 64px);
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1;
  margin-bottom: 18px;
}

.article-deck {
  color: #BBBBBB;
  font-size: 18px;
  font-weight: 300;
  line-height: 1.65;
  max-width: 680px;
}

.article-copy {
  color: #D3D3CE;
  font-size: 17px;
  line-height: 1.8;
}

.article-copy p { margin: 0 0 18px; }

.article-copy section { margin-top: 42px; }

.article-copy h2 {
  color: var(--fg);
  font-family: var(--font-display);
  font-size: clamp(29px, 5vw, 38px);
  font-weight: 400;
  line-height: 1.08;
  margin: 0 0 16px;
}

.article-note {
  margin: 24px 0;
  padding: 20px 22px 2px;
  background: var(--bg-alt);
  border: 1px solid rgba(232, 145, 45, 0.24);
  border-left: 3px solid var(--accent);
}

.article-note .note-label { margin-bottom: 8px; }
.article-note p:last-child { margin-bottom: 16px; }
.article-note p:not(.note-label) { color: #C5C5C0; font-size: 15px; line-height: 1.7; }

.article-assumption {
  border-color: rgba(153, 153, 153, 0.35);
  border-left-color: var(--fg-muted);
}

.article-assumption .note-label { color: #C5C5C0; }

.article-validation {
  padding: 0 0 0 16px;
  border-left: 2px solid rgba(232, 145, 45, 0.55);
}

.article-footer {
  min-height: 76px;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  border-top: 1px solid #2A2A2A;
}

@media (max-width: 600px) {
  .article-nav { min-height: 60px; padding: 0 18px; }
  .article-brand { font-size: 19px; }
  .article-back { font-size: 12px; }
  .article-wrap { width: calc(100% - 36px); padding: 42px 0 56px; }
  .article-header { padding-bottom: 24px; margin-bottom: 24px; }
  .article-header h1 { font-size: clamp(38px, 11vw, 52px); }
  .article-deck { font-size: 16px; }
  .article-copy { font-size: 16px; line-height: 1.75; }
  .article-copy section { margin-top: 34px; }
  .article-note { padding: 17px 16px 1px; }
  .article-footer { flex-wrap: wrap; gap: 14px 24px; }
}

@media (max-width: 360px) {
  .article-nav { align-items: flex-start; flex-direction: column; justify-content: center; gap: 2px; padding-top: 10px; padding-bottom: 10px; }
  .article-brand { font-size: 18px; }
}