.pulsio-archive { color: var(--ink, #282821); }
.pulsio-archive .archive-feature { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; padding: clamp(2rem, 5vw, 4.5rem); margin-bottom: 5rem; background: #f0eee7; border-top: 1px solid #dad6ca; border-bottom: 1px solid #dad6ca; }
.pulsio-archive h2 { font-size: clamp(2.1rem, 4.5vw, 4.2rem); line-height: 1.12; letter-spacing: -.025em; margin: .75rem 0 1.4rem; max-width: 20ch; }
.pulsio-archive .archive-feature p, .pulsio-archive .section-intro { font-size: 1.05rem; line-height: 1.85; max-width: 70ch; }
.pulsio-archive .archive-quote { margin: 0; padding: 2rem 0 2rem 2.5rem; border-left: 1px solid #b6a775; }
.pulsio-archive .archive-quote p { font-family: 'Playfair Display', Georgia, serif; font-size: clamp(1.6rem, 2.6vw, 2.5rem); line-height: 1.45; }
.pulsio-archive .archive-quote cite { display: block; margin-top: 1.5rem; font-size: .85rem; line-height: 1.7; font-style: normal; color: #666455; }
.pulsio-archive .archive-links { display: flex; gap: .8rem 1.5rem; flex-wrap: wrap; margin-top: 1.7rem; }
.pulsio-archive .archive-links a { color: inherit; font-size: .85rem; border-bottom: 1px solid #a4925c; text-decoration: none; padding-bottom: .3rem; }
.pulsio-archive a:focus-visible, .pulsio-archive summary:focus-visible { outline: 2px solid #9c8246; outline-offset: 5px; }
.pulsio-archive .archive-section { width: calc(100% - clamp(2.4rem, 10vw, 9rem)); max-width: 1296px; margin: 0 auto 5rem; scroll-margin-top: 135px; }
.pulsio-archive .original-title { max-width: 74ch; margin: 2rem 0; padding-left: 1.5rem; border-left: 2px solid #b6a775; }
.pulsio-archive .original-title span, .pulsio-archive .language-note { display: block; font-size: .8rem; color: #6b685b; line-height: 1.7; }
.pulsio-archive .original-title p { font-family: 'Playfair Display', Georgia, serif; font-size: 1.4rem; line-height: 1.5; margin-top: .4rem; }
.pulsio-archive .archive-accordion { border-top: 1px solid #d7d3c7; }
.pulsio-archive .archive-accordion:last-child { border-bottom: 1px solid #d7d3c7; }
.pulsio-archive summary { cursor: pointer; list-style: none; display: grid; grid-template-columns: 2.5rem 1fr 1.2rem; gap: 1rem; align-items: baseline; padding: 1.4rem .4rem; }
.pulsio-archive summary::-webkit-details-marker { display: none; }
.pulsio-archive summary .chapter-number { font-size: .8rem; color: #8b7950; }
.pulsio-archive summary h3 { font-family: 'Playfair Display', Georgia, serif; font-size: clamp(1.2rem, 2vw, 1.65rem); font-weight: 400; line-height: 1.4; margin: 0; }
.pulsio-archive summary::after { content: '+'; font-size: 1.5rem; font-weight: 300; }
.pulsio-archive details[open] summary::after { content: '−'; }
.pulsio-archive details[open] { background: #f7f6f1; }
.pulsio-archive .archive-text { max-width: 76ch; margin: 0 auto; padding: 1rem 2rem 2.5rem; font-family: Georgia, 'Times New Roman', serif; font-size: 1.075rem; line-height: 1.9; overflow-wrap: anywhere; }
.pulsio-archive .archive-text p { margin: 0 0 1.3rem; }
.pulsio-archive .archive-text .source-heading { margin-top: 2rem; font-weight: bold; letter-spacing: .025em; }
.pulsio-archive .source-page { display: block; text-align: center; color: #858071; font-size: .75rem; }
.pulsio-archive .source-formula { font-family: 'Cambria Math', 'STIX Two Math', Georgia, serif; font-size: 1.12rem; padding: .4rem 0; white-space: pre-wrap; overflow-wrap: anywhere; line-height: 1.6; }
.pulsio-archive .theory-section { padding-top: 3rem; border-top: 1px solid #d7d3c7; }
.pulsio-archive .archive-notes { background: #f0eee7; padding: 2rem clamp(1.2rem, 4vw, 3rem); }
.pulsio-archive .archive-notes h2 { font-size: 1.75rem; }
.pulsio-archive .archive-notes p { font-size: .9rem; line-height: 1.8; max-width: 85ch; margin-bottom: 1rem; }
@media (max-width: 720px) {
  .pulsio-archive .archive-feature { grid-template-columns: 1fr; padding: 1.7rem 1.2rem; gap: 1.6rem; margin-bottom: 3rem; }
  .pulsio-archive .archive-quote { padding: 1.5rem 0 0; border-left: 0; border-top: 1px solid #b6a775; }
  .pulsio-archive .archive-section { margin-bottom: 3rem; scroll-margin-top: 112px; }
  .pulsio-archive summary { grid-template-columns: 1.6rem 1fr 1rem; gap: .5rem; padding: 1.2rem .2rem; }
  .pulsio-archive .archive-text { padding: .8rem 1rem 1.5rem; font-size: 1rem; line-height: 1.85; }
}