.chapter-nav { display: flex; align-items: center; gap: 26px; padding-block: 25px; border-bottom: 1px solid var(--line); font-size: 12px; }
.chapter-nav > span { color: var(--muted); margin-right: auto; }
.chapter-nav a { display: flex; gap: 10px; align-items: center; padding-block: 9px; }
.chapter-nav a span:first-child { color: var(--sea); font: 10px var(--mono); }
.chapter-nav a:hover { text-decoration: underline; text-underline-offset: 5px; }
.source-network { background: #e7eadf; border-block: 1px solid var(--line); }
.network { display: grid; grid-template-columns: minmax(0, 1fr) 220px minmax(0, 1fr); align-items: center; padding: 35px 0; }
.network-lanes h3 { font-size: 11px; font-weight: 500; color: var(--muted); margin-bottom: 23px; }
.outgoing h3 { text-align: right; }
.network-row { display: flex; align-items: center; min-height: 92px; }
.network-node { flex: 1; min-width: 0; background: var(--white); border: 1px solid #acbda8; padding: 16px; }
.network-node strong { display: block; font-size: 14px; font-weight: 550; }
.network-node > span { display: block; font-size: 10px; color: var(--muted); margin-top: 5px; }
.network-edge { width: 95px; flex-shrink: 0; display: flex; flex-direction: column; text-align: center; }
.network-edge span { font: 8px/1.5 var(--mono); padding-inline: 3px; color: var(--sea); }
.network-edge i { display: block; font-style: normal; line-height: 14px; color: var(--sea); position: relative; text-align: right; }
.network-edge i::before { content: ''; position: absolute; left: 0; right: 7px; top: 50%; border-top: 1px solid currentColor; }
.network-hub { padding: 37px 15px; text-align: center; border: 1px solid #849c73; background: var(--signal); position: relative; }
.network-hub::before, .network-hub::after { content: ''; position: absolute; top: -78px; bottom: -78px; width: 1px; background: #849c73; }
.network-hub::before { left: -1px; }.network-hub::after { right: -1px; }
.network-hub img { width: 100%; max-width: 170px; height: auto; margin: 0 auto 15px; display: block; }
.network-hub strong { font-size: 25px; letter-spacing: -.04em; }
.network-hub p { font-size: 10px; margin-top: 6px; }
.network figcaption { grid-column: 1 / -1; font-size: 11px; color: var(--muted); text-align: center; margin-top: 30px; }
.source-notes { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; border-top: 1px solid #afc0a6; padding-top: 30px; }
.source-notes h3 { font-size: 23px; letter-spacing: -.025em; }
.source-notes p { font-size: 13px; line-height: 1.9; color: var(--muted); margin-top: 14px; }
.preparation-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 70px; align-items: start; }
.preparation-steps { border-top: 1px solid var(--line); }
.preparation-steps details { border-bottom: 1px solid var(--line); }
.preparation-steps summary { list-style: none; display: grid; grid-template-columns: 27px 1fr 18px; align-items: start; gap: 18px; padding-block: 25px; }
.preparation-steps summary::-webkit-details-marker { display: none; }
.step-index { font: 11px var(--mono); color: var(--sea); padding-top: 4px; }
.preparation-steps strong { font-size: 20px; display: block; line-height: 1.4; font-weight: 550; }
.preparation-steps small { font-size: 11px; color: var(--muted); display: block; margin-top: 6px; }
.preparation-steps details > p { margin: -5px 32px 26px 45px; font-size: 13px; line-height: 1.9; color: var(--muted); }
.detail-toggle { font: 24px/1 var(--mono); transition: transform .15s; }
.preparation-steps [open] .detail-toggle { transform: rotate(45deg); }
.context-receipt { background: var(--white); border: 1px solid #8ba18c; padding: 0 29px 25px; box-shadow: 9px 9px 0 var(--wash); position: sticky; top: 25px; }
.context-receipt figcaption { padding: 15px 29px; margin-inline: -29px; background: var(--sea); color: var(--paper); font: 9px/1.6 var(--mono); }
.receipt-id { display: block; font: 9px/1.6 var(--mono); color: #6b806d; margin-block: 28px 14px; }
.context-receipt h3 { font-size: 26px; letter-spacing: -.035em; }
.context-receipt blockquote { margin: 20px 0; padding-left: 16px; border-left: 3px solid #a3b66c; font-size: 15px; line-height: 1.8; }
.context-receipt dl { margin: 25px 0; border-top: 1px dashed #bcc8b3; }
.context-receipt dl > div { display: grid; grid-template-columns: 110px minmax(0,1fr); gap: 12px; padding-block: 15px; border-bottom: 1px dashed #bcc8b3; }
.context-receipt dt { font-size: 10px; color: #62765e; }.context-receipt dd { font-size: 12px; margin: 0; }
.receipt-result { background: #e9f0d2; font-size: 12px; padding: 14px; display: flex; gap: 14px; }
.receipt-result span { color: var(--sea); font-size: 22px; }
.spaces .eyebrow, .spaces .section-heading h2 { color: var(--signal); }
.spaces .section-heading > p:last-child { color: #b9cdd0; }
.space-tabs { border-bottom: 1px solid #5d7d86; gap: 0; display: flex; }
.space-tabs button { background: transparent; border: 0; border-bottom: 3px solid transparent; color: #b9cdd0; padding: 20px 27px; flex: 1; text-align: left; font-size: 13px; }
.space-tabs button span { font: 10px var(--mono); display: block; margin-bottom: 9px; opacity: .7; }
.space-tabs button[aria-selected="true"] { border-color: var(--signal); color: var(--signal); background: #ffffff06; }
.space-panel { display: grid; grid-template-columns: .9fr 1.1fr; gap: 55px; padding-block: 42px; align-items: center; }
.space-panel h3 { font-size: 30px; line-height: 1.4; letter-spacing: -.035em; }
.space-panel > div > p { margin-top: 18px; font-size: 13px; line-height: 1.95; color: #adc5cb; }
.space-map { padding: 25px; border: 1px solid #52717b; background: #0d2b36; }
.space-members { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; }
.space-members span { display: flex; justify-content: center; align-items: center; text-align: center; padding: 15px 9px; border: 1px solid #66858d; font-size: 11px; position: relative; min-height: 80px; }
.space-members span::after { content: ''; position: absolute; top: 100%; left: 50%; height: 19px; width: 1px; background: #7c9966; }
.space-map .space-shared { background: #daef8112; border: 1px solid #7c9966; color: var(--signal); font-size: 11px; padding: 12px; text-align: center; margin-top: 18px; }
.space-map .space-detail { font-size: 11px; margin-top: 17px; }
.event-story { display: grid; grid-template-columns: .9fr 1.1fr; gap: 55px; padding-top: 48px; border-top: 1px solid #486974; margin-top: 10px; }
.event-story h3 { font-size: 27px; line-height: 1.4; letter-spacing: -.025em; }
.event-story > div p { color: #adc5cb; font-size: 13px; line-height: 1.95; margin-top: 18px; }
.event-story ol { list-style: none; padding: 0; margin: 0; }
.event-story li { display: flex; gap: 20px; position: relative; padding-bottom: 24px; }
.event-story li:last-child { padding-bottom: 0; }
.event-story li:not(:last-child)::after { content: ''; position: absolute; top: 29px; bottom: 3px; left: 13px; border-left: 1px solid #607e7c; }
.event-index { display: grid; place-items: center; font: 10px var(--mono); width: 28px; height: 28px; border: 1px solid #829c6c; color: var(--signal); flex-shrink: 0; }
.event-story strong { font-size: 13px; font-weight: 500; }.event-story li p { color: #adc5cb; margin-top: 5px; font-size: 12px; }
.activity-note { margin-top: 35px; padding: 21px 25px; border-left: 2px solid var(--signal); background: #ffffff04; font-size: 12px; color: #b9cdd0; }
.operations { background: #e7eadf; }
.operation-rows { border-top: 1px solid #adbea4; }
.operation-rows article { display: grid; grid-template-columns: 50px minmax(0,.75fr) minmax(0,1.25fr); gap: 35px; padding-block: 32px; border-bottom: 1px solid #adbea4; }
.operation-rows article > span { font: 12px var(--mono); color: var(--sea); padding-top: 5px; }
.operation-rows h3 { font-size: 25px; line-height: 1.4; letter-spacing: -.03em; }
.operation-rows p { font-size: 13px; line-height: 1.95; color: var(--muted); }
@media(max-width:1100px) {
  .chapter-nav { flex-wrap: wrap; gap: 12px 25px; }.chapter-nav > span { width: 100%; }
  .network { grid-template-columns: minmax(0,1fr) 160px minmax(0,1fr); }.network-edge { width: 64px; }
  .network-node { padding: 12px; }.network-node strong { font-size: 12px; }.network-node > span { font-size: 9px; }
  .preparation-grid { gap: 35px; }.space-panel,.event-story { gap: 30px; }
  .context-receipt dl > div { grid-template-columns: 80px minmax(0,1fr); }
}
@media(max-width:800px) {
  .network { grid-template-columns: 1fr; padding-block: 5px 25px; }.network-lanes { width: 100%; }
  .network-lanes h3 { text-align: left; margin-bottom: 14px; }.network-row { min-height: 85px; }
  .network-node strong { font-size: 15px; }.network-node > span { font-size: 11px; }.network-edge { width: 100px; }
  .network-hub { margin-block: 30px; padding: 22px; }.network-hub img { max-width: 140px; }
  .network-hub::before { top: -30px; bottom: auto; left: 50%; height: 30px; }.network-hub::after { top: 100%; bottom: auto; right: 50%; height: 30px; }
  .incoming { border-right: 1px solid #849c73; padding-right: 0; position: relative; }.outgoing { border-left: 1px solid #849c73; position: relative; padding-top: 16px; }.outgoing h3 { padding-left: 15px; }
  .incoming::after { content: ''; position: absolute; bottom: 0; right: -1px; width: 50%; border-bottom: 1px solid #849c73; }
  .outgoing::before { content: ''; position: absolute; top: 0; left: -1px; width: 50%; border-top: 1px solid #849c73; }
  .network figcaption { font-size: 11px; text-align: left; }.source-notes { gap: 30px; }
  .preparation-grid,.space-panel,.event-story { grid-template-columns: 1fr; }.context-receipt { position: static; margin-right: 9px; }
  .context-receipt dl > div { grid-template-columns: 110px minmax(0,1fr); }
  .space-tabs button { padding-inline: 13px; font-size: 12px; }.space-panel { gap: 27px; }
  .operation-rows article { grid-template-columns: 25px 1fr; gap: 14px 20px; }.operation-rows p { grid-column: 2; }
}
@media(max-width:520px) {
  .chapter-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 5px 17px; font-size: 10px; padding-block: 19px; }.chapter-nav > span { grid-column: 1/-1; margin-bottom: 5px; }.chapter-nav a { gap: 7px; }
  .source-notes { grid-template-columns: 1fr; }.source-notes h3 { font-size: 23px; }
  .preparation-steps summary { gap: 12px; grid-template-columns: 21px 1fr 18px; }.preparation-steps strong { font-size: 19px; }.preparation-steps details > p { margin-left: 33px; margin-right: 20px; font-size: 12px; }
  .context-receipt { padding-inline: 20px; }.context-receipt figcaption { margin-inline: -20px; padding-inline: 20px; }.context-receipt h3 { font-size: 25px; }
  .context-receipt dl > div { grid-template-columns: 73px minmax(0,1fr); gap: 10px; }.context-receipt blockquote { font-size: 14px; }
  .space-tabs button { font-size: 10px; padding: 17px 9px; }.space-panel h3 { font-size: 27px; }.space-panel > div > p { font-size: 12px; }
  .space-map { padding: 17px; }.space-members { gap: 6px; }.space-members span { font-size: 10px; padding: 12px 6px; }
  .event-story { padding-top: 30px; }.event-story h3 { font-size: 26px; }.event-story > div p { font-size: 12px; }.activity-note { padding: 17px; font-size: 11px; }
  .operation-rows h3 { font-size: 23px; }.operation-rows p { font-size: 12px; }
}
@media(prefers-reduced-motion:reduce) { .detail-toggle { transition: none; } }
@media print {
  .chapter-nav { display: none; }.context-receipt { position: static; box-shadow: none; }
  .spaces,.space-map { background: white; color: black; }.spaces .section-heading h2,.spaces .section-heading > p:last-child,.space-panel > div > p,.event-story > div p,.event-story li p,.activity-note { color: #333; }
  .network-hub::before,.network-hub::after { display: none; }.network-hub,.network-node { break-inside: avoid; }
}