/* A consistent reading rhythm within the established monochrome identity. */
.section-map { display: grid; grid-template-columns: repeat(4,1fr); border-block: 1px solid #555; margin-bottom: 12px; }
.section-map a { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 84px; padding: 18px 24px; font-size: .9375rem; line-height: 1.4; border-right: 1px solid #333; transition: background-color 180ms ease, color 180ms ease; }
.section-map a:first-child { padding-left: 0; }
.section-map a:last-child { border: 0; padding-right: 0; }
.section-map a > span { color: #aaa; }
.reading-band { background: #0b0b0b; border-block: 1px solid #484848; }
.reading-band .section:first-child { border-top: 0; }
.premium-site #main .section { padding-block: 88px; }
.premium-site #services { border-top: 0; }
.premium-site .section-heading { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: end; }
.premium-site .section-heading h2 { font-size: clamp(2.1rem,3.5vw,3.1rem); line-height: 1.16; letter-spacing: -.03em; max-width: 16ch; }
.premium-site .section-heading > p { margin: 0; max-width: 44ch; font-size: 1rem; line-height: 1.7; color: #b3b3b3; }
.premium-site .service-card { border-color: #555; }
.premium-site .service-card-title { min-height: 150px; gap: 20px; padding: 28px 30px 24px; }
.premium-site .service-card-title h3 { font-size: 1.7rem; line-height: 1.25; }
.premium-site .service-card-content { padding: 24px 30px 0; }
.premium-site .service-card-content > p { min-height: 82px; line-height: 1.7; color: #bbb; }
.premium-site .service-card-content details { margin-top: 24px; }
.premium-site .service-card-content summary { min-height: 68px; padding-block: 18px; }
.premium-site .service-card-content .detail-content ul { margin: 0 0 24px; }
.premium-site .service-card-content .detail-content p { line-height: 1.7; }
.premium-site .about-content { padding: 34px 38px; }
.about-facts { list-style: none; padding: 0; margin: 28px 0 0; }
.about-facts li { padding-block: 20px; border-top: 1px solid #c7c7c3; }
.about-facts li:last-child { padding-bottom: 0; }
.about-facts strong { display: block; font-size: .9375rem; font-weight: 500; }
.premium-site .about-facts p { margin-top: 8px; line-height: 1.65; font-size: .9375rem; }
.premium-site .credentials summary { min-height: 96px; }
.premium-site .publications-list > article { min-height: 236px; padding: 30px 34px; }
.premium-site .publications-list h3 { font-size: 1.6rem; line-height: 1.4; }
.premium-site .method-list p { font-size: .9375rem; line-height: 1.7; }
.premium-site .workflow-steps p { line-height: 1.7; }
.premium-site .step-number { margin-bottom: 24px; }
.premium-site #main .contact { background: var(--text); color: #080808; padding: 48px; margin-bottom: 88px; border: 0; }
.premium-site .contact .section-heading { display: block; }
.premium-site .contact .section-heading h2 { max-width: 18ch; font-size: clamp(2.5rem,5vw,4.25rem); }
.premium-site .contact .section-heading > p { color: #494947; }
@media(hover:hover) and (pointer:fine) { .section-map a:hover { color: #fff; background: #111; } .section-map a:hover > span { color: #fff; } }
@media(max-width:1000px) {
  .premium-site #main .section { padding-block: 72px; }
  .premium-site .section-heading { gap: 40px; }
  .section-map a { padding-inline: 16px; font-size: .875rem; }
  .premium-site .service-card-title { padding: 24px; }
  .premium-site .service-card-content { padding: 24px 24px 0; }
  .premium-site .service-card-content > p { min-height: 110px; }
  .premium-site .about-content { padding: 30px; }
  .premium-site #main .contact { padding: 36px; margin-bottom: 72px; }
}
@media(max-width:700px) {
  .section-map { grid-template-columns: 1fr 1fr; margin-top: 12px; margin-bottom: 0; }
  .section-map a { min-height: 68px; padding: 16px; }
  .section-map a:first-child { padding-left: 16px; }
  .section-map a:nth-child(2) { border-right: 0; }
  .section-map a:nth-child(-n+2) { border-bottom: 1px solid #333; }
  .section-map a:last-child { padding-right: 16px; }
  .premium-site #main .section { padding-block: 58px; }
  .premium-site .section-heading { grid-template-columns: 1fr; gap: 18px; }
  .premium-site .section-heading h2 { font-size: 2rem; max-width: 19ch; line-height: 1.18; }
  .premium-site .section-heading > p { font-size: .9375rem; max-width: 42ch; }
  .premium-site .service-card-title { min-height: 138px; }
  .premium-site .service-card-content > p { min-height: 0; font-size: .9375rem; }
  .premium-site .service-card-content details { margin-top: 22px; }
  .premium-site .about-content { padding: 28px 24px; }
  .premium-site .publications-list > article { padding: 28px 24px; min-height: 210px; }
  .premium-site .publications-list h3 { font-size: 1.4rem; }
  .premium-site #main .contact { padding: 32px 24px; margin-bottom: 58px; }
  .premium-site .mobile-menu nav { top: 88px; }
}
@media(prefers-reduced-motion:reduce) { .section-map a { transition: none; } }