/* Evolution page (phase 2). Loads after site.css and agent.css and reuses their
 * tokens, case headings, timeline, tables and code panels. Sections:
 * 0 direction overview (concepts, loop, methods, comparison, study status, sources) ·
 * 1 architecture figures · 2 trajectory charts and the completion lineage case ·
 * 3 improvement summary · 4 code. */

/* 0 · Direction overview ------------------------------------------------------- */
.rsi-release-facts{display:flex;flex-wrap:wrap;gap:8px 24px;list-style:none;padding:0;margin:22px 0 28px;color:var(--brand);font-size:12px}
.rsi-release-facts li::before{content:"✓ ";font-weight:600}
.rsi-release-lineage{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));list-style:none;margin:0 0 28px;padding:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.rsi-release-lineage>li{min-width:0;padding:22px 24px;border-right:1px solid var(--line);background:var(--surface)}
.rsi-release-lineage>li:last-child{border-right:0}
.rsi-release-lineage .is-current{background:var(--brand-tint)}
.rsi-release-lineage h3{font-size:19px;line-height:1.4;margin:5px 0 10px}
.rsi-release-lineage p{font-size:14px;line-height:1.75;color:var(--soft);margin:0 0 12px}
.rsi-release-lineage a,.rsi-release-detail-body a{font-size:13px;text-decoration:underline;text-underline-offset:4px;overflow-wrap:anywhere}
.rsi-release-map{margin:0 0 24px}
.rsi-release .se-map-lane{grid-template-columns:minmax(80px,.58fr) repeat(3,minmax(0,1fr))}
.rsi-release .se-map-lane:last-child{padding-bottom:4px}
.se-map-methods .is-inferencenet{border-color:var(--brand);background:var(--brand-tint)}
.rsi-release-details{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:18px 0}
.rsi-release-details+ .rsi-release-details{border-top:0;margin-top:-18px}
.rsi-release-details summary{cursor:pointer;padding:18px 4px;font-size:15px;font-weight:600;line-height:1.65}
.rsi-release-details summary::marker{color:var(--brand)}
.rsi-release-details summary:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.rsi-release-detail-body{padding:0 4px 24px;font-size:14px;line-height:1.8;color:var(--soft)}
.rsi-release-detail-body>p{max-width:920px;margin:0 0 18px}
.rsi-release-details:not(.rsi-v1-archive) .compare-table{min-width:660px;width:100%}
.rsi-release-details:not(.rsi-v1-archive) .compare-table td{white-space:normal}
.rsi-release-details:not(.rsi-v1-archive) .compare-table th[scope="row"]{white-space:normal}
.rsi-release-code-table td:nth-child(2){width:39%;max-width:400px}
.rsi-release-details:not(.rsi-v1-archive) code{overflow-wrap:anywhere;white-space:normal;font-size:12px}
.rsi-release-mechanism{list-style:none;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));padding:0;margin:24px 0;gap:26px}
.rsi-release-mechanism li{min-width:0;padding:16px;border:1px solid var(--line);position:relative}
.rsi-release-mechanism li:nth-child(2){background:var(--brand-tint);border-color:var(--brand)}
.rsi-release-mechanism li:not(:last-child)::after{content:"→";position:absolute;top:calc(50% - 13px);right:-22px;color:var(--brand)}
.rsi-release-mechanism strong,.rsi-release-mechanism span{display:block}
.rsi-release-mechanism strong{color:var(--ink)}
.rsi-release-results{margin-top:38px;padding:28px;border:1px solid var(--brand);border-radius:var(--radius)}
.rsi-release-results .case-heading{margin-bottom:12px}
.rsi-release-results h3{font-size:25px;line-height:1.35;margin:0}
.rsi-release-scoreboard{display:grid;grid-template-columns:1fr .7fr 1fr;gap:16px;align-items:stretch;margin:26px 0}
.rsi-release-scoreboard>div{padding:20px;text-align:center;background:var(--tint);border:1px solid var(--line)}
.rsi-release-scoreboard>.is-current{border-color:var(--brand);background:var(--brand-tint)}
.rsi-release-scoreboard p{font-size:14px;margin:0 0 8px;font-weight:600}
.rsi-release-scoreboard strong{display:block;font-size:64px;font-weight:600;letter-spacing:-.045em;line-height:1.1;color:var(--ink)}
.rsi-release-scoreboard strong>span{font-size:28px}
.rsi-release-scoreboard>div>span{display:block;font-size:12px;color:var(--soft);line-height:1.8;margin-top:6px}
.rsi-release-scoreboard>.rsi-release-delta{display:flex;flex-direction:column;justify-content:center;border:0;background:none}
.rsi-release-delta strong{font-size:42px;color:var(--brand)}
.rsi-release-results .rsi-release-result-table{min-width:0}
.rsi-release-result-table td{font-variant-numeric:tabular-nums;font-weight:600}
.rsi-release-provenance{display:grid;grid-template-columns:180px minmax(0,1fr);gap:10px 20px;margin:24px 0;font-size:12px;line-height:1.6}
.rsi-release-provenance dt{font-weight:600;color:var(--ink)}
.rsi-release-provenance dd{margin:0;min-width:0}
.rsi-study-nav{margin:22px 0 28px;border-block:1px solid var(--line)}
.rsi-study-nav ol{display:flex;flex-wrap:wrap;gap:12px 24px;list-style:none;margin:0;padding:14px 0}
.rsi-study-nav a{font-size:13px;text-decoration:underline;text-underline-offset:4px}
.rsi-study-subtitle{font-size:23px;line-height:1.4;margin:0 0 20px}
.rsi-implementation,.rsi-release-results,.rsi-release-details{scroll-margin-top:calc(var(--header-offset,var(--header-h)) + 64px)}
.rsi-v1-archive-body{padding:0 4px 24px;min-width:0}
.rsi-v1-archive .section.container{width:100%;margin:0;padding-block:32px;min-width:0}
.rsi-v1-archive .section.container:first-of-type{border-top:0;padding-top:12px}
.rsi-v1-archive .case-heading>h3{font-size:26px;line-height:1.35;margin:0}
.rsi-v1-archive .case-heading>h3:lang(zh){font-size:25px}
@media(max-width:1050px){.rsi-release .se-map-lane{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:760px){
  .rsi-release-lineage{grid-template-columns:1fr}
  .rsi-release-lineage>li{border-right:0;border-bottom:1px solid var(--line)}
  .rsi-release-lineage>li:last-child{border-bottom:0}
  .rsi-release .se-map-lane{grid-template-columns:1fr}
  .rsi-release-results{padding:20px 16px}
  .rsi-release-results h3{font-size:22px}
  .rsi-release-scoreboard{grid-template-columns:1fr 1fr;gap:10px}
  .rsi-release-scoreboard>div{padding:18px 8px}
  .rsi-release-scoreboard>.rsi-release-delta{grid-column:1/-1;grid-row:2;padding:8px;flex-direction:row;align-items:center;flex-wrap:wrap;gap:8px}
  .rsi-release-scoreboard strong{font-size:48px}
  .rsi-release-delta strong{font-size:30px}
  .rsi-release-scoreboard>.rsi-release-delta>span{margin:0}
  .rsi-release-mechanism{grid-template-columns:1fr;gap:22px}
  .rsi-release-mechanism li:not(:last-child)::after{content:"↓";top:auto;bottom:-24px;right:50%}
  .rsi-release-provenance{grid-template-columns:1fr;gap:4px}
  .rsi-release-provenance dd{margin-bottom:12px}
}
@media print{.rsi-release-lineage>li,.rsi-release-scoreboard,.rsi-release-mechanism{break-inside:avoid}}
.se-tiles{list-style:none;margin:6px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}
.se-tiles>li{min-width:0;padding:20px 22px 22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.se-tiles h3{font-size:17px;line-height:1.35;margin:10px 0 6px}
.se-tiles p{font-size:14px;line-height:1.75;color:var(--soft);margin:0}
.se-role{display:inline-block;font-family:var(--mono);font-size:10.5px;line-height:1.6;letter-spacing:.06em;text-transform:uppercase;padding:1px 9px;border:1px solid var(--strong-line);border-radius:999px;color:var(--muted)}
.se-role.is-edited{border-color:var(--brand);color:var(--brand);background:var(--brand-tint)}
.se-role.is-observed{border-style:dashed}
.se-links{display:flex;flex-wrap:wrap;gap:12px 30px;margin-top:18px}
.se-subhead{font-size:19px;line-height:1.4;margin:40px 0 10px}
.se-body{max-width:820px;font-size:15px;line-height:1.8;color:var(--soft);margin:0}
.se-body+.se-body{margin-top:12px}
.se-questions{margin:4px 0 0;padding-left:22px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 44px;max-width:920px;font-size:14px;line-height:1.7;color:var(--soft)}
.se-questions li{padding-left:4px}

.se-cycle-figure{margin:6px 0 0;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:24px 24px 20px}
.se-cycle{list-style:none;margin:0 0 40px;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:30px;position:relative}
.se-cycle>li{position:relative;min-width:0;background:var(--paper);border:1px solid var(--strong-line);border-radius:4px;padding:15px 15px 17px}
.se-cycle>li.is-edit{border-color:var(--brand);background:var(--brand-tint)}
.se-cycle>li:not(:last-child)::after{content:"";position:absolute;top:50%;right:-22px;width:11px;height:11px;border-top:1.5px solid var(--muted);border-right:1.5px solid var(--muted);transform:translateY(-50%) rotate(45deg)}
.se-cycle::after{content:"";position:absolute;left:10%;right:10%;bottom:-22px;height:14px;border:1.5px solid var(--muted);border-top:0;border-radius:0 0 12px 12px}
.se-cycle-step{display:block;font-family:var(--mono);font-size:12px;color:var(--brand)}
.se-cycle h3{font-size:16px;line-height:1.35;margin:4px 0 6px}
.se-cycle p{font-size:13px;line-height:1.7;color:var(--soft);margin:0}
.se-frame{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px 26px;padding-top:18px;border-top:1px solid var(--line)}
.se-frame p{margin:0;font-size:13px;line-height:1.7;color:var(--soft)}
.se-label{display:block;font-family:var(--mono);font-size:10.5px;line-height:1.6;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:0 0 4px}
.se-cycle-figure figcaption{font-size:12px;line-height:1.8;color:var(--muted);margin-top:16px}

.se-methods{border-top:1px solid var(--line)}
.se-method{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:22px 48px;padding:34px 0 36px;border-bottom:1px solid var(--line);scroll-margin-top:calc(var(--header-h) + 58px)}
.se-method-head h3{font-size:25px;line-height:1.25;letter-spacing:-.015em;margin:4px 0 8px}
.se-method-paper{font-size:14px;line-height:1.7;color:var(--ink);margin:0}
.se-method-meta{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:5px;font-size:12px;line-height:1.65;color:var(--muted)}
.se-method-meta a,.se-source a{text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--muted);overflow-wrap:anywhere}
.se-method-summary{font-size:15px;line-height:1.8;color:var(--soft);margin:18px 0 0}
.se-note{border-left:2px solid var(--brand);padding:2px 0 2px 16px;margin:18px 0 0;font-size:13px;line-height:1.75;color:var(--soft)}
.se-note+.se-note{margin-top:12px}
.se-steps{list-style:none;margin:0;padding:0;counter-reset:se-step;border-top:1px solid var(--line)}
.se-steps>li{display:grid;grid-template-columns:30px minmax(0,1fr);gap:12px;padding:12px 0 13px;border-bottom:1px solid var(--line);counter-increment:se-step}
.se-steps>li::before{content:counter(se-step,decimal-leading-zero);font-family:var(--mono);font-size:12px;color:var(--brand);padding-top:2px}
.se-steps h4{font-size:14px;line-height:1.5;font-weight:600;margin:0 0 3px}
.se-steps p{font-size:13px;line-height:1.7;color:var(--soft);margin:0}
.se-loc{display:block;font-family:var(--mono);font-size:11px;line-height:1.6;color:var(--muted);margin-top:4px;overflow-wrap:anywhere}

.se-compare{margin-top:6px}
.se-compare .compare-table{min-width:1000px}
.se-compare tbody th{width:150px;white-space:normal}
.se-compare td{min-width:170px}
.se-compare thead th{white-space:normal}
.se-compare .is-ours{background:var(--tint)}
.se-compare .se-mark{display:block;font-size:11px;line-height:1.5;color:var(--muted);margin-top:5px}
.se-contrast{margin-top:26px}
.se-contrast>li{padding:16px 20px 18px}
.se-contrast .se-label{color:var(--brand)}

.se-study-nav ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px 24px;margin:26px 0 0;padding:14px 0 0;border-top:1px solid var(--line)}
.se-study-nav a{font-size:13px;line-height:1.6;color:var(--soft);text-decoration:underline;text-decoration-color:var(--muted);text-underline-offset:4px}
.se-study-nav a:hover{color:var(--ink);text-decoration-color:var(--ink)}
.se-tiles.is-status{grid-template-columns:repeat(5,minmax(0,1fr))}
.se-tiles.is-status>li{padding:16px 16px 18px}
.se-tiles.is-status h3{font-size:15px;margin:2px 0 6px}
.se-tiles.is-status p{font-size:13px;line-height:1.7}
.se-tiles.is-status .se-label{color:var(--brand)}

.se-sources{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 34px;margin:6px 0 0}
.se-source{min-width:0;border-top:1px solid var(--line);padding-top:14px}
.se-source h3{font-size:16px;line-height:1.4;margin:0 0 10px}
.se-source dl{margin:0}
.se-source dt{font-family:var(--mono);font-size:10.5px;line-height:1.6;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.se-source dd{margin:0 0 10px;font-size:13px;line-height:1.7;color:var(--soft);overflow-wrap:anywhere}

/* 1 · Architecture figures (Deep Agents stack, hook wiring, evolution loop) ---- */
.evolution-page .page-hero h1{max-width:900px}
.rsi-figure{margin:4px 0 0}
.rsi-figure+.rsi-figure,.rsi-figure+.table-scroll{margin-top:30px}
.rsi-figure figcaption{font-size:12px;line-height:1.8;color:var(--muted);margin-top:14px;max-width:920px}
.rsi-figure svg{display:block;width:100%;height:auto}
.rsi-figure svg text{font-family:var(--sans);fill:var(--ink);font-size:12px}
.rsi-figure .f-m{font-family:var(--mono)}
.rsi-figure .f-s{font-size:11px}
.rsi-figure .f-mu{fill:var(--muted)}
.rsi-figure .f-tt{font-weight:600;font-size:13px}
.rsi-figure .f-big{font-weight:600;font-size:15px}
.rsi-figure .f-b{fill:var(--brand)}
.rsi-figure .f-bold{font-weight:600}
.rsi-figure .f-box{fill:var(--paper);stroke:var(--strong-line);stroke-width:1}
.rsi-figure .f-quiet{fill:var(--paper);stroke:var(--strong-line);stroke-width:1;stroke-dasharray:4 3}
.rsi-figure .f-strong{fill:var(--paper);stroke:var(--ink);stroke-width:1.4}
.rsi-figure .f-band{fill:var(--tint);stroke:var(--line);stroke-width:1}
.rsi-figure .f-rsi{fill:var(--brand-tint);stroke:var(--brand);stroke-width:1.5}
.rsi-figure .f-rsi-line{fill:var(--paper);stroke:var(--brand);stroke-width:1.5}
.rsi-figure .f-rsi-dash{fill:var(--brand-tint);stroke:var(--brand);stroke-width:1.2;stroke-dasharray:5 4}
.rsi-figure .f-pill{fill:var(--brand-tint);stroke:var(--brand);stroke-width:1}
.rsi-figure .f-pt{font-family:var(--mono);font-size:10.5px;fill:var(--brand);text-anchor:middle}
.rsi-figure .f-ln{stroke:var(--muted);stroke-width:1.3;fill:none}
.rsi-figure .f-lr{stroke:var(--brand);stroke-width:1.4;fill:none}
.rsi-figure .f-ah{fill:var(--muted)}
.rsi-figure .f-ahr{fill:var(--brand)}
.rsi-loop-figure{margin-bottom:38px}
.rsi-notes{margin:22px 0 0;padding-left:18px;display:grid;gap:8px;max-width:860px;font-size:14px;line-height:1.75;color:var(--soft)}
.rsi-module-table{margin-top:30px}
.rsi-module-table th code{display:block;font-size:12.5px}
.rsi-role{display:block;font-size:12px;font-weight:400;color:var(--muted);margin-top:4px}
.rsi-hook-note{display:block;color:var(--soft);margin-top:4px}
.rsi-code-link{text-decoration:underline;text-decoration-color:var(--muted);text-underline-offset:3px}
.rsi-sig{display:block;margin-top:6px;font-size:11.5px;color:var(--muted);white-space:normal}
.rsi-steps .case-observed-facts{max-width:560px;margin-bottom:0}
.rsi-steps .case-decision{max-width:760px}

/* 2 · Trajectory charts ------------------------------------------------------- */
.rsi-toolbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px 28px;margin:0 0 24px}
.rsi-control{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--soft)}
.rsi-control select{font:14px var(--sans);min-height:44px;padding:8px 32px 8px 12px;border:1px solid var(--strong-line);border-radius:4px;background:var(--paper);color:var(--ink);max-width:100%}
.rsi-legend{display:flex;flex-wrap:wrap;gap:8px 22px;list-style:none;margin:0;padding:0;font-size:12px;color:var(--soft)}
.rsi-legend li{display:inline-flex;align-items:center;gap:9px}
.rsi-key{display:inline-block;width:12px;height:12px;flex:none;position:relative}
.rsi-key-accepted{border:2px solid var(--brand);border-radius:50%;background:var(--paper)}
.rsi-key-filled{background:var(--brand);border-radius:50%}
.rsi-key-frozen{width:10px;height:10px;margin-inline:1px;border:2px solid var(--brand);background:var(--brand-tint);transform:rotate(45deg)}
.rsi-key-rejected::before,.rsi-key-rejected::after{content:"";position:absolute;left:5px;top:-1px;width:2px;height:14px;background:var(--chart-muted)}
.rsi-key-rejected::before{transform:rotate(45deg)}
.rsi-key-rejected::after{transform:rotate(-45deg)}
.rsi-nojs{font-size:13px;color:var(--muted);margin:0 0 16px}
.rsi-panels{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:34px 34px}
.rsi-panel{margin:0;min-width:0;border-top:1px solid var(--line);padding-top:16px}
.rsi-panel figcaption{font-size:13px;line-height:1.6;color:var(--soft);text-align:center;margin-top:4px}
.rsi-panel figcaption strong{font-family:var(--mono);font-size:12.5px;font-weight:600;color:var(--ink)}
.rsi-canvas svg{display:block;width:100%;height:auto;overflow:visible}
.rsi-chart text{font-family:var(--sans);font-size:11px;fill:var(--soft)}
.rsi-chart .rsi-grid{stroke:var(--chart-grid);stroke-width:1}
.rsi-chart .rsi-axis{stroke:var(--strong-line);stroke-width:1}
.rsi-chart .rsi-tick{font-family:var(--mono);font-size:10.5px;fill:var(--muted)}
.rsi-chart .rsi-axis-title{font-size:11.5px;fill:var(--soft)}
.rsi-chart .rsi-step{stroke:var(--brand);stroke-width:2;fill:none}
.rsi-chart .rsi-point{fill:var(--paper);stroke:var(--brand);stroke-width:2}
.rsi-chart .rsi-frozen{fill:var(--brand-tint);stroke:var(--brand);stroke-width:2}
.rsi-chart .rsi-reject{stroke:var(--chart-muted);stroke-width:2;fill:none}
.rsi-chart .rsi-value{font-family:var(--mono);font-size:11.5px;font-weight:600;fill:var(--ink)}
.rsi-chart .rsi-leader{stroke:var(--strong-line);stroke-width:1}
.rsi-chart .rsi-callout rect{fill:var(--paper);stroke:var(--line);stroke-width:1}
.rsi-chart .rsi-problem{font-size:10.5px;fill:var(--caution)}
.rsi-chart .rsi-fix{font-family:var(--mono);font-size:11px;font-weight:600;fill:var(--brand)}
.rsi-chart .rsi-callout.is-rejected .rsi-fix{font-family:var(--sans);font-weight:400;fill:var(--muted)}
.rsi-chart .rsi-tag rect{fill:var(--paper);stroke:var(--line);stroke-width:1}
.rsi-chart .rsi-tag text{font-size:10.5px;fill:var(--soft)}
.rsi-values td:nth-child(3){min-width:220px}
.se-case{display:grid;gap:22px;margin-top:34px}
.se-case,.se-case-card{scroll-margin-top:calc(var(--header-h) + 58px)}
.se-case-card{min-width:0;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);padding:22px 24px 24px}
.se-case-card.is-negative{border-left:3px solid var(--caution);background:var(--tint)}
.se-case-card h3{font-size:19px;line-height:1.4;margin:0 0 8px}
.se-case-intro{max-width:880px;font-size:14px;line-height:1.75;color:var(--soft);margin:0 0 18px}
.se-case-table td:nth-child(2),.se-case-table td:nth-child(3){min-width:200px}
.se-case-notes{margin:18px 0 0;padding-left:18px;display:grid;gap:8px;max-width:900px;font-size:13.5px;line-height:1.75;color:var(--soft)}
.se-case-card.is-negative .se-case-notes{margin-top:12px}
.se-case-notes strong{font-weight:600;color:var(--ink)}
.se-case-source{max-width:900px;font-size:12px;line-height:1.8;color:var(--muted);margin:16px 0 0}
.se-case-source a{text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--muted)}

/* 3 · Improvement summary ------------------------------------------------------ */
.rsi-stats{margin:6px 0 42px}
.rsi-stats strong{font-size:clamp(28px,3.3vw,40px);white-space:nowrap}
.rsi-split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:46px;align-items:start}
.rsi-signal-block{min-width:0}
.rsi-signal-block h3{font-size:19px;margin:0 0 6px}
.rsi-block-note{font-size:13px;line-height:1.7;color:var(--soft);margin:0 0 14px}
.rsi-signals{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.rsi-signals li{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"label values" "track track";gap:8px 16px;padding:14px 0;border-bottom:1px solid var(--line)}
.rsi-signal-label{grid-area:label;display:flex;flex-direction:column;gap:2px;min-width:0}
.rsi-signal-label strong{font-size:14px;font-weight:500;line-height:1.5}
.rsi-signal-label span{font-size:12px;color:var(--muted)}
.rsi-signal-values{grid-area:values;display:flex;align-items:baseline;justify-content:flex-end;gap:7px;font-family:var(--mono);font-size:13px;color:var(--soft);white-space:nowrap}
.rsi-signal-values strong{color:var(--ink);font-size:15px}
.rsi-signal-track{grid-area:track;position:relative;height:16px;background:linear-gradient(var(--line),var(--line)) center/100% 1px no-repeat}
.rsi-signal-span{position:absolute;top:50%;left:var(--from);width:calc(var(--to) - var(--from));height:4px;background:var(--brand);opacity:.3;transform:translateY(-50%)}
.rsi-dot{position:absolute;top:50%;left:var(--at);width:12px;height:12px;border-radius:50%;transform:translate(-50%,-50%)}
.rsi-dot-initial{border:2px solid var(--brand);background:var(--paper)}
.rsi-dot-frozen{background:var(--brand)}
.rsi-signal-legend{margin-top:14px}
.rsi-split .table-scroll{min-width:0}
.evolution-page .case-improvement h3{font-size:17px;margin-bottom:10px}

/* 4 · Code ------------------------------------------------------------------------ */
.rsi-code-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;align-items:start}
.rsi-code-grid .code-panel{--code-max:540px}
.rsi-code-wide{grid-column:1/-1}
.evolution-page .case-archive-intro{grid-template-columns:minmax(0,1fr)}

@media(max-width:1100px){
  .rsi-split{grid-template-columns:minmax(0,1fr);gap:34px}
  .rsi-figure.diagram{padding:12px}
  .se-tiles.is-status{grid-template-columns:repeat(3,minmax(0,1fr))}
  .se-method{grid-template-columns:minmax(0,1fr);gap:22px}
  .se-sources{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:860px){
  .rsi-panels,.rsi-code-grid{grid-template-columns:minmax(0,1fr)}
  .se-tiles,.se-tiles.is-status{grid-template-columns:repeat(2,minmax(0,1fr))}
  .se-cycle{grid-template-columns:minmax(0,1fr);gap:26px;margin-bottom:6px}
  .se-cycle>li:not(:last-child)::after{top:auto;right:auto;left:50%;bottom:-20px;transform:translateX(-50%) rotate(135deg)}
  .se-cycle::after{display:none}
  .se-frame,.se-sources{grid-template-columns:minmax(0,1fr)}
  .se-cycle-figure{padding:18px 16px 16px}
  .se-case,.se-case-card{scroll-margin-top:calc(var(--header-h) + 16px)}
}
@media(max-width:640px){
  .se-questions{grid-template-columns:minmax(0,1fr)}
}
@media(max-width:520px){
  .rsi-toolbar{align-items:flex-start;flex-direction:column}
  .rsi-control{max-width:100%}
  .rsi-control select{max-width:78%}
  .se-tiles,.se-tiles.is-status{grid-template-columns:minmax(0,1fr)}
  .se-tiles>li{padding:16px 16px 18px}
  .se-method-head h3{font-size:21px}
  .se-case-card{padding:16px 16px 18px}
}
@media(max-width:400px){
  .rsi-stats strong{font-size:22px}
}

/* 5 · Research map ------------------------------------------------------------
 * When recent methods change a harness: four parallel regimes (lanes), each read
 * left to right as feedback → edit → selection, with composition above,
 * representation below and evaluation beside. Every rule is scoped to
 * .evolution-page because harness.html also loads this stylesheet. */
.evolution-page .se-map{margin:6px 0 0;display:grid;gap:14px}
.evolution-page .se-map-band,.evolution-page .se-map-search,.evolution-page .se-map-eval{min-width:0;border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px 18px}
.evolution-page .se-map-band{background:var(--tint)}
.evolution-page .se-map-search{background:var(--surface);border:1.5px solid var(--brand)}
.evolution-page .se-map-eval{background:var(--paper);border-style:dashed;border-color:var(--strong-line)}
.evolution-page .se-map-zone{display:flex;flex-wrap:wrap;align-items:baseline;gap:2px 12px;margin:0 0 12px}
.evolution-page .se-map-zone strong{font-family:var(--mono);font-size:11px;line-height:1.5;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--ink)}
.evolution-page .se-map-search>.se-map-zone strong{color:var(--brand)}
.evolution-page .se-map-zone span{font-size:12px;line-height:1.5;color:var(--muted)}
.evolution-page .se-map-units{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 30px}
.evolution-page .se-map-unit{min-width:0}
.evolution-page .se-map-unit h3{font-size:16px;line-height:1.4;margin:0 0 4px}
.evolution-page .se-map-unit h3 a,.evolution-page .se-map-src a,.evolution-page .se-map-methods a,.evolution-page .se-map-branch a{text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--muted)}
.evolution-page .se-map-unit p{font-size:13.5px;line-height:1.7;color:var(--soft);margin:0}
.evolution-page .se-map-unit .se-map-src{display:flex;flex-wrap:wrap;gap:2px 14px;margin-top:6px;font-size:11.5px;line-height:1.6;color:var(--muted)}
.evolution-page .se-map-link{display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px;margin:14px 0 0;padding-top:12px;border-top:1px solid var(--line);font-size:12.5px;line-height:1.6;color:var(--soft)}
.evolution-page .se-map-calls{display:inline-block;flex:none;width:8px;height:8px;margin:0 2px 3px 2px;border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);transform:rotate(45deg)}

.evolution-page .se-map-core{display:grid;grid-template-columns:minmax(0,1fr) minmax(190px,232px);gap:14px;align-items:stretch}
.evolution-page .se-map-lanes{list-style:none;margin:0;padding:0}
.evolution-page .se-map-lane{display:grid;grid-template-columns:minmax(150px,.95fr) repeat(3,minmax(0,1fr));grid-template-areas:"when feedback edit select" "when methods methods methods";gap:10px 28px;padding:14px 0 16px;border-top:1px solid var(--line)}
.evolution-page .se-map-lane:first-child{border-top:0;padding-top:4px}
.evolution-page .se-map-when{grid-area:when;min-width:0}
.evolution-page .se-map-when h3{font-size:16px;line-height:1.35;margin:0}
.evolution-page .se-map-when p{font-size:12.5px;line-height:1.6;color:var(--soft);margin:0}
.evolution-page .se-map-glyph{display:block;width:128px;max-width:100%;height:auto;margin:8px 0 6px}
.evolution-page .se-map-step{position:relative;min-width:0}
.evolution-page .se-map-step.is-feedback{grid-area:feedback}
.evolution-page .se-map-step.is-edit{grid-area:edit}
.evolution-page .se-map-step.is-select{grid-area:select}
.evolution-page .se-map-step::before{content:"";position:absolute;left:-20px;top:6px;width:7px;height:7px;border-top:1.5px solid var(--muted);border-right:1.5px solid var(--muted);transform:rotate(45deg)}
.evolution-page .se-map-label{display:block;font-family:var(--mono);font-size:10.5px;line-height:1.6;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:0 0 3px}
.evolution-page .se-map-step p{font-size:13px;line-height:1.65;color:var(--soft);margin:0}
.evolution-page .se-map-step .se-map-label{font-size:10.5px;line-height:1.6;color:var(--muted);margin:0 0 3px}
.evolution-page .se-map-step .se-map-loop{margin-top:6px;font-family:var(--mono);font-size:10.5px;line-height:1.6;letter-spacing:.04em;color:var(--brand)}
.evolution-page .se-map-loop::before{content:"↺ ";content:"↺ " / ""}
.evolution-page .se-map-methods{grid-area:methods;list-style:none;margin:2px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.evolution-page .se-map-methods li{display:inline-flex;flex-wrap:wrap;align-items:baseline;gap:0 7px;min-width:0;max-width:100%;padding:3px 9px 4px;border:1px solid var(--strong-line);border-radius:3px;background:var(--paper);font-size:12.5px;line-height:1.5}
.evolution-page .se-map-methods a{font-weight:600;color:var(--ink)}
.evolution-page .se-map-methods span{font-size:11.5px;color:var(--muted)}

.evolution-page .se-map-branch{margin-top:12px;padding:12px 16px 14px;border:1px dashed var(--strong-line);border-radius:var(--radius);background:var(--tint)}
.evolution-page .se-map-branch .se-map-zone{margin-bottom:8px}
.evolution-page .se-map-branch ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px 26px}
.evolution-page .se-map-branch li{min-width:0;font-size:13px;line-height:1.65;color:var(--soft)}
.evolution-page .se-map-branch li a{font-weight:600;color:var(--ink);margin-right:5px}
.evolution-page .se-map-eval p{font-size:12.5px;line-height:1.7;color:var(--soft);margin:0 0 9px}
.evolution-page .se-map-eval p:last-child{margin-bottom:0}
.evolution-page .se-map-eval .se-map-zone{margin-bottom:10px}

.evolution-page .se-map .g-run{fill:var(--paper);stroke:var(--ink);stroke-width:1}
.evolution-page .se-map .g-edit{fill:var(--brand)}
.evolution-page .se-map .g-span{fill:var(--tint);stroke:var(--muted);stroke-width:1}
.evolution-page .se-map .g-freeze{fill:none;stroke:var(--ink);stroke-width:1.6}
.evolution-page .se-map .g-dot{fill:var(--muted)}
.evolution-page .se-map-legend{list-style:none;margin:2px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px 22px;font-size:12px;line-height:1.6;color:var(--soft)}
.evolution-page .se-map-legend li{display:inline-flex;align-items:center;gap:7px}
.evolution-page .se-map-legend svg{display:block;flex:none;width:14px;height:14px}
.evolution-page .se-map figcaption{font-size:12px;line-height:1.8;color:var(--muted);max-width:920px}

.evolution-page .se-map-sources{margin-top:26px}
.evolution-page .se-map-sources .se-map-table{margin:0 0 22px}
.evolution-page .se-map-table .compare-table{min-width:980px}
.evolution-page .se-map-table tbody th[scope="row"]{width:200px;white-space:normal}
.evolution-page .se-map-table td{min-width:136px}
.evolution-page .se-map-table thead th{white-space:normal}
.evolution-page .se-map-table .se-map-src{display:flex;flex-direction:column;gap:1px;margin-top:6px;font-size:11.5px;line-height:1.55;font-weight:400;color:var(--muted)}
.evolution-page .se-map-table .se-map-src a{color:var(--soft)}
.evolution-page .se-map-table tr.se-map-group>th{padding-top:9px;padding-bottom:9px;background:var(--tint);font-family:var(--mono);font-size:10.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--brand)}
.evolution-page .se-map-table tbody+tbody tr.se-map-group>th{border-top:1px solid var(--strong-line)}
.evolution-page .se-map-table tr[id]{scroll-margin-top:calc(var(--header-h) + 58px)}
html[lang="zh-CN"] .evolution-page .se-map-zone strong,html[lang="zh-CN"] .evolution-page .se-map-label,html[lang="zh-CN"] .evolution-page .se-map-step .se-map-loop,html[lang="zh-CN"] .evolution-page .se-map-table tr.se-map-group>th{font-size:12px;letter-spacing:.02em}

@media(max-width:1100px){
  .evolution-page .se-map-core{grid-template-columns:minmax(0,1fr)}
  .evolution-page .se-map-lane{grid-template-columns:repeat(3,minmax(0,1fr));grid-template-areas:"when when when" "feedback edit select" "methods methods methods";gap:10px 26px}
  .evolution-page .se-map-step.is-feedback::before{display:none}
  .evolution-page .se-map-when{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:2px 16px}
  .evolution-page .se-map-when h3{grid-column:1}
  .evolution-page .se-map-glyph{grid-column:2;grid-row:1;margin:0}
  .evolution-page .se-map-when p{grid-column:1/-1}
}
@media(max-width:860px){
  .evolution-page .se-map-units,.evolution-page .se-map-branch ul{grid-template-columns:minmax(0,1fr)}
  .evolution-page .se-map-lane{grid-template-columns:minmax(0,1fr);grid-template-areas:"when" "feedback" "edit" "select" "methods";gap:8px}
  .evolution-page .se-map-step{padding-left:12px;border-left:2px solid var(--line)}
  .evolution-page .se-map-step::before{display:none}
  .evolution-page .se-map-table tr[id]{scroll-margin-top:calc(var(--header-h) + 16px)}
}
@media(max-width:520px){
  .evolution-page .se-map-band,.evolution-page .se-map-search,.evolution-page .se-map-eval{padding:14px 14px 16px}
  .evolution-page .se-map-when{grid-template-columns:minmax(0,1fr)}
  .evolution-page .se-map-glyph{grid-column:1;grid-row:auto;margin:6px 0 2px}
  .evolution-page .se-map-calls{display:none}
}
@media print{
  .evolution-page .se-map-lane,.evolution-page .se-map-band,.evolution-page .se-map-eval{break-inside:avoid}
}
@media(forced-colors:active){
  .evolution-page .se-map-band,.evolution-page .se-map-search,.evolution-page .se-map-eval,.evolution-page .se-map-branch,.evolution-page .se-map-methods li{border-color:CanvasText}
  .evolution-page .se-map .g-edit,.evolution-page .se-map .g-dot{fill:CanvasText}
  .evolution-page .se-map .g-run,.evolution-page .se-map .g-span{fill:Canvas;stroke:CanvasText}
  .evolution-page .se-map .g-freeze{stroke:CanvasText}
}

/* Agent improvement directions: capability questions followed by two research paths and stage roadmap. */
.improvement-directions .case-intro{max-width:940px}
.improvement-directions .improvement-capabilities{grid-template-columns:repeat(2,minmax(0,1fr))}
.improvement-directions .improvement-task-design{margin-top:20px}
.improvement-paths-title{font-size:24px;line-height:1.4;margin:42px 0 20px}
.improvement-paths{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.improvement-paths article{min-width:0;padding:26px;border:1px solid var(--line);border-radius:var(--radius)}
.improvement-paths h4{font-size:21px;line-height:1.45;margin:10px 0 14px}
.improvement-paths article>p:last-child{font-size:15px;line-height:1.8;color:var(--soft);margin:0}
.improvement-directions .improvement-scope{margin-top:22px}
@media(max-width:700px){.improvement-paths,.improvement-directions .improvement-capabilities{grid-template-columns:1fr}}