/* Interactive figures for writing pages */
.fig{margin:40px 0 44px;padding:26px 0 22px;border-top:2px solid var(--ink);border-bottom:1px solid var(--line)}
.fig:empty{display:none}
.fig-head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:20px}
.fig-title{font:10px/1.6 var(--mono);letter-spacing:.14em;color:var(--muted);text-transform:uppercase}
.fig-hint{font-size:11px;color:var(--muted)}
.fig-caption{font-size:12px;line-height:1.8;color:var(--muted);margin:16px 0 0}
.fig button{font:inherit;color:inherit;background:transparent;cursor:pointer}

/* 1 — pipeline */
.pl-context{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:12px 14px;border:1px dashed var(--line);font-size:12px;color:#50534d;transition:border-color .4s,background .4s}
.pl-context b{font:10px var(--mono);letter-spacing:.1em;color:var(--muted);font-weight:400}
.pl-context.pulse{border-color:var(--ink);background:rgba(23,24,23,.04)}
.pl-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:18px;position:relative}
.pl-steps:before{content:'';position:absolute;left:10%;right:10%;top:15px;height:1px;background:var(--line)}
.pl-step{position:relative;display:flex;flex-direction:column;align-items:center;gap:10px;border:0;padding:0 4px 4px;text-align:center}
.pl-dot{width:31px;height:31px;border-radius:50%;border:1px solid var(--line);background:var(--paper);display:grid;place-items:center;font:10px var(--mono);color:var(--muted);transition:all .25s;position:relative;z-index:1}
.pl-name{font-size:12px;line-height:1.5;color:var(--muted);transition:color .25s}
.pl-step:hover .pl-dot{border-color:var(--ink)}
.pl-step.on .pl-dot{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.pl-step.on .pl-name{color:var(--ink);font-weight:600}
.pl-loop{font:10px var(--mono);color:var(--muted);text-align:right;margin-top:8px;letter-spacing:.06em}
.pl-panel{margin-top:18px;padding:18px 0 0;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(3,1fr);gap:18px;min-height:96px}
.pl-panel div{opacity:0;transform:translateY(4px);animation:figIn .35s forwards}
.pl-panel div:nth-child(2){animation-delay:.05s}.pl-panel div:nth-child(3){animation-delay:.1s}
.pl-panel b{display:block;font:9px var(--mono);letter-spacing:.12em;color:var(--muted);font-weight:400;margin-bottom:6px}
.pl-panel span{font-size:13px;line-height:1.8;color:var(--ink)}

/* 2 — bars */
.seg{display:inline-flex;border:1px solid var(--line)}
.seg button{border:0;padding:7px 12px;font-size:12px;color:var(--muted)}
.seg button.on{background:var(--ink);color:var(--paper)}
.bars{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;align-items:end;height:180px;padding-top:10px;border-bottom:1px solid var(--ink)}
.bar{display:flex;flex-direction:column;justify-content:flex-end;align-items:center;height:100%}
.bar-fill{width:100%;max-width:56px;display:flex;flex-direction:column;justify-content:flex-end;height:0;transition:height .7s cubic-bezier(.2,.7,.2,1)}
.bar-new{background:var(--ink);transition:flex-grow .7s}
.bar-reuse{background:repeating-linear-gradient(135deg,var(--line) 0 4px,transparent 4px 8px);border:1px solid var(--line);border-bottom:0;transition:flex-grow .7s}
.bar-val{font:10px var(--mono);color:var(--muted);margin-bottom:6px}
.bar-labels{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:8px;font:10px var(--mono);color:var(--muted);text-align:center}
.legend{display:flex;gap:18px;flex-wrap:wrap;margin-top:14px;font-size:11px;color:var(--muted)}
.legend i{display:inline-block;width:10px;height:10px;margin-right:6px;vertical-align:-1px}
.legend .k-new{background:var(--ink)}.legend .k-reuse{background:repeating-linear-gradient(135deg,var(--line) 0 3px,transparent 3px 6px);border:1px solid var(--line)}

/* 3 — iteration chart */
.it-svg{width:100%;height:auto;display:block;overflow:visible}
.it-svg text{font-family:var(--mono);font-size:10px;fill:var(--muted)}
.it-grid{stroke:var(--line);stroke-width:1}
.it-th{stroke:var(--ink);stroke-width:1;stroke-dasharray:4 4}
.it-line{fill:none;stroke:var(--ink);stroke-width:1.6;transition:stroke-dashoffset .6s ease}
.it-pt{fill:var(--paper);stroke:var(--ink);stroke-width:1.4;cursor:pointer;transition:r .2s,opacity .3s}
.it-pt.on{fill:var(--ink)}
.it-pt.off{opacity:0;pointer-events:none}
.it-ctrl{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:14px;flex-wrap:wrap}
.it-btn{border:1px solid var(--ink)!important;padding:8px 14px;font-size:12px;transition:background .2s,color .2s}
.it-btn:hover{background:var(--ink);color:var(--paper)}
.it-note{font-size:13px;line-height:1.8;color:var(--ink);min-height:48px;margin:12px 0 0;animation:figIn .35s}
.it-note b{font:10px var(--mono);letter-spacing:.1em;color:var(--muted);font-weight:400;margin-right:10px}

@keyframes figIn{to{opacity:1;transform:none}}
@media(max-width:720px){
  .pl-steps{grid-template-columns:repeat(5,minmax(0,1fr))}
  .pl-name{font-size:11px}
  .pl-panel{grid-template-columns:1fr;gap:12px}
  .bars{gap:8px;height:150px}.bar-labels{gap:8px}
  .fig-head{flex-direction:column;gap:10px}
}
@media(prefers-reduced-motion:reduce){.fig *{transition:none!important;animation:none!important}.pl-panel div,.it-note{opacity:1;transform:none}}
.article .fig-caption{font-size:12px;line-height:1.8;color:var(--muted);margin:14px 0 0}
.article .it-note{font-size:13px;line-height:1.8;color:var(--ink);margin:12px 0 0}
/* v3 refinements */
.pl-progress{position:absolute;left:10%;top:15px;height:1px;width:0;max-width:80%;background:var(--ink);transition:width .5s ease;z-index:0}
.pl-name{font-size:13px}
.pl-panel span{font-size:14px}
.fig-hint{font-size:12px}
.article .fig-caption{font-size:13px}
.article .it-note{font-size:14px}
.it-zone{fill:rgba(23,24,23,.035)}
.it-svg text{font-size:11px}
@media(max-width:720px){.pl-name{font-size:11px}}