/* Architecture page */
.arch-layers { margin-top: clamp(36px, 5vw, 56px); }
.arch-layers .scroll-x > svg { min-width: 640px; border-radius: 14px; }
.arch-layers .pair { margin-top: 18px; }

.story-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.5fr); gap: clamp(20px, 3vw, 40px); margin-top: 18px; align-items: start; }
.story-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.story-steps li { border-radius: 14px; padding: 4px 6px; }
.step-btn { all: unset; box-sizing: border-box; display: flex; align-items: center; gap: 12px; width: 100%; min-height: 44px; padding: 6px 8px; cursor: pointer; border-radius: 10px; font-weight: 700; }
.step-btn:focus-visible { outline: 3px solid var(--signal); outline-offset: 2px; }
.step-btn .n { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; border: 1.5px solid var(--line); font: 400 .8rem var(--font-mono); color: var(--muted); flex: none; background: var(--paper); transition: all var(--duration-ui); }
.story-steps p { color: var(--muted); font-size: .95rem; padding: 0 8px 8px 50px; }
.story-steps em { font-style: normal; color: var(--clay); font-weight: 600; }
.js .story-steps p { display: none; }
.js .story-steps li.on { background: var(--paper); }
.js .story-steps li.on p { display: block; }
.story-steps li.on .n { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.story-steps li.done .n { background: var(--accent); border-color: var(--positive); color: var(--ink); }

.story-controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 12px; }
.story-count { margin-left: auto; }
.no-motion-pref [data-act="toggle"] { display: none; }

#story-svg { min-width: 560px; }
#story-svg .node circle { fill: var(--paper); stroke: var(--line); stroke-width: 2; transition: all var(--duration-ui); }
#story-svg .node .num { font: 700 19px var(--font-body); fill: var(--muted); }
#story-svg .node .lab { font: 600 17px var(--font-body); fill: var(--muted); }
#story-svg .node.done circle { fill: #eaf3e6; stroke: var(--positive); }
#story-svg .node.on circle { fill: var(--ink); stroke: var(--signal); stroke-width: 4; }
#story-svg .node.on .num { fill: var(--accent); }
#story-svg .node.on .lab, #story-svg .node.done .lab { fill: var(--ink); }
#story-svg .jr rect, #story-svg #jr-new { fill: #eaf3e6; stroke: var(--positive); stroke-width: 2; }
#story-svg #jr-new { fill: none; stroke-dasharray: 4 5; stroke: var(--line); transition: all var(--duration-ui); }
#story-svg.s3 #jr-new, #story-svg.s4 #jr-new, #story-svg.s5 #jr-new { fill: var(--accent); stroke: var(--positive); stroke-dasharray: 0; }
#story-svg #root-old { fill: var(--ink); } #story-svg #root-old-t { fill: var(--paper); }
#story-svg #root-new { fill: none; stroke: var(--line); stroke-dasharray: 4 5; stroke-width: 2; transition: all var(--duration-ui); }
#story-svg #root-new-t { fill: var(--muted); }
#story-svg.s4 #root-new, #story-svg.s5 #root-new { fill: var(--ink); stroke: var(--signal); stroke-dasharray: 0; }
#story-svg.s4 #root-new-t, #story-svg.s5 #root-new-t { fill: var(--paper); }
#story-svg #unk-path, #story-svg #unk-lab { opacity: .25; transition: opacity var(--duration-ui); }
#story-svg.s3 #unk-path, #story-svg.s3 #unk-lab { opacity: 1; }
#story-svg #receipt-card { opacity: .3; transition: opacity var(--duration-ui); }
#story-svg.s5 #receipt-card { opacity: 1; }

.snap-grid, .au-grid { align-items: start; gap: clamp(24px, 4vw, 56px); }
.snap-grid .scroll-x > svg, .au-grid .scroll-x > svg { min-width: 520px; }
.rc-cards { margin: clamp(28px, 4vw, 44px) 0; }
.frame.honest { background: var(--signal-soft); border-color: #e6cc8a; }
.frame.honest .bar { border-color: rgba(21,57,47,.2); align-items: center; }
.plain { margin: 12px 0 0; padding-left: 1.2em; display: grid; gap: 8px; color: var(--ink); }
.arch-layers + * { margin-top: 0; }
#recovery .scroll-x > svg { min-width: 720px; }

/* fifty years */
.fifty { padding-bottom: clamp(72px, 9vw, 120px); }
.fifty-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 80px); align-items: center; }
.fifty-art svg { width: 100%; height: auto; max-width: 560px; display: block; margin: 0 auto; }
.fifty h2 { font-size: var(--step-4); margin-top: 18px; }
.fifty .facts .fact h3 { color: var(--paper); }
.fifty-list { margin-top: clamp(40px, 6vw, 72px); display: grid; grid-template-columns: 1fr 1fr; column-gap: clamp(24px, 5vw, 64px); }
.fifty-list li { align-items: start; }
.fifty-list b { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; color: var(--paper); }
.fifty-list li:nth-child(n+1) { border-bottom: 1px solid var(--line-dark); }
.fifty-list { border-top: 1px solid var(--line-dark); }

@media (max-width: 1080px) {
  .story-grid, .fifty-grid { grid-template-columns: 1fr; }
  .fifty-list { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  #story-svg *, .step-btn .n { transition: none !important; }
}
.story-controls [hidden] { display: none !important; }
.story-grid > *, .fifty-grid > *, .snap-grid > *, .au-grid > * { min-width: 0; }
@media (max-width: 1080px) { .story-grid { grid-template-columns: minmax(0, 1fr); } .fifty-grid { grid-template-columns: minmax(0,1fr); } }