.ib-page {
  max-width: 760px;
}
.ib-page h1 em {
  font-family: 'DM Serif Display', serif;
  font-style: italic;
  color: var(--accent);
}
.intro-block {
  display: flex; flex-direction: column; gap: 1rem;
  margin-bottom: 2rem;
}
.intro-block p {
  font-size: 16px; color: var(--text-muted);
  line-height: 1.8;
}
.ib-section {
  margin-bottom: 3rem;
  padding-top: 0.5rem;
}
.section-heading {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(24px, 4vw, 30px);
  letter-spacing: -0.3px;
  margin-bottom: 1.25rem;
  line-height: 1.15;
}
.section-lead {
  font-size: 15px; color: var(--text-muted);
  line-height: 1.8; margin-bottom: 1rem;
}
.focus-label {
  font-size: 13px; font-weight: 500;
  color: var(--text); margin: 1rem 0 0.6rem;
}
.plain-list {
  list-style: none;
  display: flex; flex-direction: column; gap: 6px;
  margin-bottom: 1rem;
}
.plain-list li {
  font-size: 14px; color: var(--text-muted);
  padding-left: 18px; position: relative; line-height: 1.65;
}
.ib-section ul:not(.plain-list) {
  list-style: none;
  display: flex; flex-direction: column; gap: 8px;
}
.ib-section ul:not(.plain-list) li {
  font-size: 14px; color: var(--text-muted);
  padding-left: 18px; position: relative; line-height: 1.65;
}
.ib-section ul:not(.plain-list) li::before {
  content: '→'; position: absolute; left: 0;
  color: var(--accent); font-size: 13px;
}
.subject-detail {
  background: var(--bg-soft);
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.6rem;
  margin-bottom: 14px;
}
.subject-detail-header {
  display: flex; align-items: baseline;
  justify-content: space-between; gap: 1rem;
  flex-wrap: wrap; margin-bottom: 0.5rem;
}
.subject-detail h3 {
  font-size: 17px; font-weight: 500;
}
.subject-detail h3 a:hover { color: var(--accent); }
.subject-detail > p {
  font-size: 14px; color: var(--text-muted);
  line-height: 1.7; margin-bottom: 0.25rem;
}
.subject-detail ul {
  list-style: none;
  display: flex; flex-direction: column; gap: 8px;
}
.subject-detail li {
  font-size: 14px; color: var(--text-muted);
  padding-left: 18px; position: relative; line-height: 1.65;
}
.subject-detail li::before {
  content: '→'; position: absolute; left: 0;
  color: var(--accent); font-size: 13px;
}
.subject-link, .text-link {
  font-size: 13px; font-weight: 500; color: var(--accent);
  white-space: nowrap;
}
.subject-link:hover, .text-link:hover { text-decoration: underline; }
.link-row {
  display: flex; flex-wrap: wrap; gap: 1.25rem;
  margin-top: 1rem;
}
.level-note {
  font-size: 12px; font-weight: 500; color: var(--text-muted);
  margin-bottom: 0.35rem;
}
.specialist-note {
  font-size: 12px; font-weight: 500; color: var(--accent);
  margin-bottom: 0.35rem;
}
.guarantee-pill {
  display: inline-block;
  background: var(--accent); color: #fff;
  font-size: 11px; font-weight: 500; letter-spacing: 0.5px;
  padding: 4px 10px; border-radius: var(--radius-pill);
  margin-bottom: 0.75rem;
}
.cta-box p + p { margin-top: 0.75rem; }
.why-section { text-align: center; }
.why-goal {
  font-size: 16px; color: var(--text);
  line-height: 1.75; margin-bottom: 0;
  font-weight: 400;
}

/* Sticky site navigation */
.site-nav {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(12px);
}
.site-nav .nav-logo img { height: 38px; }
.nav-links { display: flex; align-items: center; gap: 1.25rem; }
.nav-links a {
  font-size: 13px; color: rgba(255,255,255,0.65);
  transition: color 0.15s;
}
.nav-links a:hover { color: #fff; }
.nav-cta {
  background: var(--accent) !important;
  color: #fff !important;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  font-size: 13px !important;
  font-weight: 500 !important;
}
.nav-cta:hover { opacity: 0.88; }
.nav-returning {
  font-size: 12.5px !important;
  color: rgba(255,255,255,0.45) !important;
  white-space: nowrap;
}
.nav-returning:hover { color: rgba(255,255,255,0.85) !important; }
.nav-toggle {
  display: none; background: none; border: none;
  cursor: pointer; padding: 8px; color: #fff;
}
.mobile-menu {
  display: none; position: fixed; top: 60px; left: 0; right: 0; z-index: 99;
  background: rgba(13,13,13,0.98);
  border-bottom: 0.5px solid rgba(255,255,255,0.08);
  padding: 1rem 2rem 1.5rem; flex-direction: column; gap: 0.25rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 15px; color: rgba(255,255,255,0.65);
  padding: 0.65rem 0; border-bottom: 0.5px solid rgba(255,255,255,0.08);
}
.mobile-menu .nav-cta {
  text-align: center; margin-top: 0.75rem;
  padding: 12px 18px !important; border-bottom: none;
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
}

@media (max-width: 600px) {
  .subject-detail-header { flex-direction: column; align-items: flex-start; }
}