:root{
  --bg:#f4f5f7;--panel:#fff;--ink:#181a2a;--muted:#616680;--line:#e5e7ef;
  --accent:#1f4e79;--accent2:#2e75b6;--accent-soft:#eaf1f8;
  --pass:#1a7f4b;--pass-bg:#e5f4ec;--partial:#b7791f;--partial-bg:#fbf3e2;
  --fail:#c0392b;--fail-bg:#fbe9e7;--hf:#ff9d00;
  --radius:12px;--shadow:0 1px 3px rgba(20,22,40,.07),0 6px 18px rgba(20,22,40,.05);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Arial,sans-serif;
  background:var(--bg);color:var(--ink);font-size:14px;line-height:1.55}
.wrap{max-width:1240px;margin:0 auto;padding:0 20px 60px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}

/* topbar */
.topbar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
.topbar .inner{max-width:1240px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.crumb{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--muted)}
.crumb .hf{width:22px;height:22px;background:var(--hf);border-radius:6px;display:inline-flex;align-items:center;justify-content:center}
.crumb b{color:var(--ink)} .spacer{flex:1}
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600;border:1px solid var(--line);background:#fff}
.pill.model{background:var(--accent-soft);border-color:#cfe0f0;color:var(--accent)}
.pill.ro{background:#f3f4f7;color:var(--muted)}

/* ── HERO ── */
.hero{margin:22px 0 0;padding:28px 30px 24px;border-radius:16px;color:#fff;
  background:linear-gradient(135deg,#141a35 0%,#232a5c 55%,#2f2f6e 100%);
  box-shadow:0 10px 30px rgba(20,22,60,.18)}
.hero h1{margin:0 0 10px;font-size:26px;letter-spacing:-.4px;line-height:1.3}
.hero p{margin:0;color:#c9cfe8;max-width:940px;font-size:14px}
.hero p b{color:#fff}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin:20px 0 16px}
.stat{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:14px 16px;text-align:center}
.stat .sv{font-size:28px;font-weight:800;letter-spacing:-.5px}
.stat .sv.good{color:#6ee7a8}.stat .sv.bad{color:#ff8b80}.stat .sv.accent{color:#b8a6ff}
.stat .sl{font-size:10.5px;letter-spacing:.09em;color:#a8b0d0;margin-top:4px;font-weight:600}
.hnote{border-left:3px solid #7c8cff;background:rgba(255,255,255,.06);padding:11px 15px;border-radius:0 9px 9px 0;font-size:13px;color:#ccd2ea}
.hnote b{color:#fff}

/* ── TABS ── */
.tabs{display:flex;gap:4px;margin:22px 0 0;border-bottom:1px solid var(--line);flex-wrap:wrap}
.tab{background:none;border:1px solid transparent;border-bottom:none;padding:10px 16px;font-size:13.5px;
  font-weight:600;color:var(--muted);cursor:pointer;border-radius:9px 9px 0 0}
.tab:hover{color:var(--ink);background:#fff}
.tab.on{color:var(--accent);background:#fff;border-color:var(--line);box-shadow:0 -2px 0 var(--accent2) inset}
.panel{display:none;padding-top:22px}
.panel.on{display:block}

h2.sec{font-size:18px;margin:26px 0 8px}
h2.sec:first-child{margin-top:4px}
p.lead{color:var(--muted);max-width:920px;margin:0 0 16px}

/* ── EXPLORE ── */
.grid{display:grid;grid-template-columns:330px 1fr;gap:18px;align-items:start}
.listpanel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.lp-head{padding:13px 15px;border-bottom:1px solid var(--line)}
.lp-head h3{margin:0 0 5px;font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}
.lp-sub{margin:0;font-size:12px;color:var(--muted);line-height:1.45}
.tasklist{max-height:660px;overflow:auto}
.gh{padding:9px 15px 6px;font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.07em;
  color:var(--muted);background:#fafbfe;border-bottom:1px solid var(--line);border-top:1px solid var(--line)}
.trow{display:flex;align-items:center;gap:9px;padding:11px 15px;border-bottom:1px solid var(--line);cursor:pointer}
.trow:hover{background:#fafbfe}.trow.sel{background:var(--accent-soft)}
.trow .dot{width:9px;height:9px;border-radius:50%;flex-shrink:0}
.dot.good{background:var(--pass)}.dot.warn{background:var(--partial)}.dot.bad{background:var(--fail)}
.trow .nm{flex:1;min-width:0}
.trow .nm b{display:block;font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.trow .nm span{font-size:11px;color:var(--muted)}
.trow .chg{font-size:10px;font-weight:800;color:var(--muted);white-space:nowrap}

.stage{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 22px;min-height:520px}
.s-head{border-bottom:1px solid var(--line);padding-bottom:13px}
.s-head h2{margin:0;font-size:19px}
.s-head .meta{color:var(--muted);font-size:12px;margin-top:3px}
.brief{margin-top:15px}
.brief .scn{color:var(--muted);font-size:13px;margin:0 0 11px;max-width:900px}
.bgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:11px}
.bcell{background:#fafbfe;border:1px solid var(--line);border-radius:9px;padding:9px 12px}
.bcell .l{font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700;margin-bottom:3px}
.bcell .v{font-size:12.5px;line-height:1.45}

.ba{margin-top:20px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.ba-head{padding:10px 16px;background:var(--accent);color:#fff;font-weight:700;font-size:12.5px;letter-spacing:.03em}
.ba-grid{display:grid;grid-template-columns:1fr 46px 1fr;align-items:stretch}
.bacol{padding:16px 20px}
.bacol.before{background:#fafbfe}
.bacol .lab{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:800}
.bacol .verdict{font-size:26px;font-weight:850;letter-spacing:-.5px;margin-top:5px}
.bacol .sc{font-size:12px;color:var(--muted);margin-top:2px}
.bacol .flags{margin-top:9px;display:flex;gap:5px;flex-wrap:wrap}
.fl{font-size:10px;font-weight:700;padding:3px 8px;border-radius:6px}
.fl.muted{background:#eef0f6;color:var(--muted)}
.fl.bad{background:var(--fail-bg);color:var(--fail)}
.midarrow{display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:22px;background:#fff}
.changed{box-shadow:inset 0 0 0 2px var(--fail)}
.ba-why{padding:12px 20px;border-top:1px solid var(--line);font-size:13px;background:#fff}

h3.dh{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:22px 0 10px}
.dims{display:flex;flex-direction:column;gap:9px}
.drow{display:flex;gap:13px;align-items:flex-start;border:1px solid var(--line);border-radius:10px;padding:13px 16px;background:#fff}
.dcode{width:30px;height:26px;border-radius:7px;background:var(--accent);color:#fff;font-weight:800;font-size:11px;
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.drow .dmain{flex:1}
.drow .dmain b{font-size:13px}
.drow .dmain span{display:block;font-size:11px;color:var(--muted);margin-bottom:5px}
.drow .dmain p{margin:0;font-size:12.5px;line-height:1.62;color:var(--muted)}
.drow .dmain p b{color:var(--ink)}
.drow .dv{font-weight:800;font-size:11px;white-space:nowrap;text-transform:uppercase;letter-spacing:.03em;
  padding-top:2px;min-width:96px;text-align:right}

.cb-good{color:var(--pass)}.cb-bad{color:var(--fail)}.cb-warn{color:var(--partial)}
.empty{color:var(--muted);text-align:center;padding:90px 20px}

/* ── CATALOG ── */
.tierbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.tchip{background:#fff;border:1px solid var(--line);border-radius:9px;padding:8px 14px;font-size:12.5px;color:var(--muted)}
.tchip b{color:var(--ink);font-size:15px;margin-right:5px}
.filters{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.tablewrap{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:auto;max-height:70vh}
table.cat{width:100%;border-collapse:collapse;font-size:12px;min-width:1100px}
table.cat th{position:sticky;top:0;background:#fafbfe;text-align:left;padding:9px 10px;font-size:10px;
  text-transform:uppercase;letter-spacing:.05em;color:var(--muted);border-bottom:1px solid var(--line);white-space:nowrap;z-index:2}
table.cat td{padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top;white-space:nowrap}
table.cat tr:hover td{background:#fafbfe}
table.cat .cellv{font-weight:700}
td.ph{text-align:center;color:var(--muted);padding:50px 20px;white-space:normal}
p.foot{color:var(--muted);font-size:12px;margin-top:10px}

/* ── METHOD ── */
.cards4{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:13px;margin:14px 0 6px}
.c4{background:#fff;border:1px solid var(--line);border-radius:11px;padding:14px 16px;box-shadow:var(--shadow)}
.c4t{font-size:9.5px;font-weight:800;letter-spacing:.09em;color:var(--accent2);text-transform:uppercase}
.c4 h4{margin:6px 0 6px;font-size:14px}
.c4 p{margin:0;font-size:12.5px;color:var(--muted);line-height:1.5}
.callout{margin:18px 0;border-left:4px solid var(--accent2);background:var(--accent-soft);
  padding:13px 17px;border-radius:0 10px 10px 0;font-size:13.5px}
.callout.warn{border-left-color:var(--partial);background:var(--partial-bg)}
.dimgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:13px}
.dimc{background:#fff;border:1px solid var(--line);border-radius:11px;padding:14px 16px;box-shadow:var(--shadow)}
.dch{display:flex;align-items:center;gap:9px;margin-bottom:7px}
.dch b{font-size:14px}
.dq{font-size:12px;color:var(--accent2);font-weight:600;margin-bottom:6px}
.dimc p{margin:0;font-size:12.5px;color:var(--muted);line-height:1.5}
.dcov{margin-top:9px;font-size:10.5px;color:var(--muted);border-top:1px solid var(--line);padding-top:7px;
  text-transform:uppercase;letter-spacing:.05em;font-weight:700}
.msec{background:#fff;border:1px solid var(--line);border-radius:11px;padding:14px 18px;margin-bottom:11px;box-shadow:var(--shadow)}
.msec h4{margin:0 0 8px;font-size:14px;display:flex;align-items:center;gap:9px}
.msec ol{margin:0;padding-left:20px;color:var(--muted);font-size:12.5px}
.msec li{margin-bottom:5px}
ul.limits{color:var(--muted);font-size:13px;max-width:920px;padding-left:20px}
ul.limits li{margin-bottom:7px}

.pagefoot{margin-top:36px;padding-top:18px;border-top:1px solid var(--line);
  text-align:center;color:var(--muted);font-size:12px}

@media(max-width:940px){
  .grid{grid-template-columns:1fr}
  .ba-grid{grid-template-columns:1fr}
  .midarrow{padding:6px;transform:rotate(90deg)}
  .hero{padding:22px 20px}
  .hero h1{font-size:21px}
}

/* label glossary */
.lgrp{background:#fff;border:1px solid var(--line);border-radius:11px;padding:12px 15px;box-shadow:var(--shadow)}
.lgrp h4{margin:0 0 9px;font-size:13px;color:var(--accent)}
.lrow{font-size:12px;color:var(--muted);line-height:1.5;padding:3px 0}
.lrow b{color:var(--ink);font-family:ui-monospace,Menlo,monospace;font-size:11.5px;margin-right:5px}
@media(max-width:640px){.lrow{grid-template-columns:1fr;gap:2px}}

.stat .ss{font-size:10px;color:#9aa4c8;margin-top:5px;line-height:1.35;font-weight:400}
.callout.small{font-size:12.5px;padding:10px 15px;margin:0 0 14px}
.fbtn{font-size:12px;padding:5px 11px;border-radius:8px;border:1px solid var(--line);background:#fff;
  cursor:pointer;color:var(--muted);font-weight:600}
.fbtn:hover{color:var(--ink)}
.fbtn.on{background:var(--accent);border-color:var(--accent);color:#fff}
table.cat tr.flip td:first-child{box-shadow:inset 3px 0 0 var(--fail)}
table.cat tr.flip td{background:#fffafa}
.fl.good{background:var(--pass-bg);color:var(--pass)}
.changed.good{box-shadow:inset 0 0 0 2px var(--pass)}
.bacol.flagged{box-shadow:inset 0 0 0 2px var(--partial)}

.dnums{display:flex;gap:14px;flex-wrap:wrap;margin-top:11px;border-top:1px solid var(--line);padding-top:10px}
.dn{display:flex;flex-direction:column}
.dn b{font-size:19px;font-weight:800;color:var(--accent);line-height:1.1}
.dn span{font-size:10px;color:var(--muted);margin-top:2px;max-width:110px;line-height:1.3}
.bacol.flagged.warn{box-shadow:inset 0 0 0 2px var(--partial)}
.fl.warn{background:var(--partial-bg);color:var(--partial)}
.ba-why .agg{margin-top:9px;padding-top:9px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}

/* stacked dimension sections */
.dimrow{background:#fff;border:1px solid var(--line);border-radius:12px;padding:15px 20px;
  margin-bottom:11px;box-shadow:var(--shadow)}
.dimhead{display:flex;align-items:flex-start;gap:14px;flex-wrap:wrap;
  border-bottom:1px solid var(--line);padding-bottom:13px;margin-bottom:13px}
.dcode.big{width:40px;height:34px;border-radius:9px;font-size:14px;flex-shrink:0}
.dimtitle{flex:1;min-width:210px}
.dimtitle h3{margin:0;font-size:17px}
.dimhead .dq{font-size:12.5px;color:var(--accent2);font-weight:600;margin-top:3px}
.dimhead .dnums{margin:0;border:none;padding:0;gap:20px}
.dimbody{margin:0 0 12px;font-size:13.5px;color:var(--ink);max-width:900px;line-height:1.6}
.stages{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.st{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;color:var(--muted);
  background:#fafbfe;border:1px solid var(--line);border-radius:20px;padding:4px 12px 4px 5px}
.st i{width:18px;height:18px;border-radius:50%;background:var(--accent-soft);color:var(--accent);
  font-style:normal;font-weight:800;font-size:10px;display:flex;align-items:center;justify-content:center}
.lgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:11px}
@media(max-width:700px){.dimhead .dnums{width:100%;margin-top:8px}}
.gh span{float:right;font-weight:700;color:var(--accent2)}
.hnote .cov{display:block;margin-top:7px;font-size:12px;color:#aab2d4}
.hnote .cov b{color:#fff}
.dterms{margin-top:12px;border-top:1px solid var(--line);padding-top:10px}
.dtl{display:block;font-size:9.5px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;
  color:var(--muted);margin-bottom:6px}
.dt{font-size:12px;color:var(--muted);line-height:1.55;padding:2px 0}
.dt b{color:var(--ink);font-family:ui-monospace,Menlo,monospace;font-size:11.5px;margin-right:6px}

/* per-task step strip inside a dimension row */
.dsteps{display:flex;flex-wrap:wrap;gap:6px;margin-top:9px}
.ds{display:inline-flex;align-items:center;gap:6px;font-size:11px;color:var(--muted);
  background:#fafbfe;border:1px solid var(--line);border-radius:20px;padding:3px 11px 3px 4px}
.ds i{width:16px;height:16px;border-radius:50%;background:var(--accent-soft);color:var(--accent);
  font-style:normal;font-weight:800;font-size:9px;display:flex;align-items:center;justify-content:center;flex-shrink:0}

/* task metadata chips */
.fchip{display:inline-block;font-family:ui-monospace,Menlo,monospace;font-size:10.5px;background:#eef1f6;
  padding:2px 7px;border-radius:5px;margin:2px 4px 0 0;color:var(--muted)}
.fchip.out{background:var(--accent-soft);color:var(--accent)}

/* ALE grader run block */
.grader{margin-top:16px;border:1px solid var(--line);border-radius:11px;overflow:hidden;background:#fff}
.gh2{padding:9px 15px;background:#111827;color:#fff;font-weight:700;font-size:12px;letter-spacing:.03em}
table.gt{width:100%;border-collapse:collapse;font-size:12px}
table.gt td{padding:7px 15px;border-bottom:1px solid var(--line)}
.gn{font-family:ui-monospace,Menlo,monospace;font-size:11.5px}
.gr{width:80px;font-weight:700;font-size:11px;text-transform:uppercase;letter-spacing:.03em}
.gr.pass{color:var(--pass)}.gr.fail{color:var(--fail)}.gr.partial{color:var(--partial)}
.gv{width:70px;text-align:right;font-weight:700;color:var(--muted)}
.gnote{margin:0;padding:10px 15px;font-size:12px;color:var(--muted);border-bottom:1px solid var(--line);background:#fafbfe}
.gscore{padding:10px 15px;font-size:12.5px;background:#fafbfe}
.gscore b{font-size:15px;margin:0 4px}

/* what ALE doesn't grade */
.gaps{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px;margin:6px 0 4px}
.gap{background:#fff;border:1px solid var(--line);border-left:3px solid var(--partial);border-radius:10px;
  padding:12px 15px;font-size:12.5px;color:var(--muted);line-height:1.55;box-shadow:var(--shadow)}
.gap b{display:block;color:var(--ink);margin-bottom:3px}

/* dimension table */
table.dimtable{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);
  border-radius:11px;overflow:hidden;box-shadow:var(--shadow);font-size:12.5px}
table.dimtable th{background:#fafbfe;text-align:left;padding:9px 12px;font-size:10px;text-transform:uppercase;
  letter-spacing:.05em;color:var(--muted);border-bottom:1px solid var(--line)}
table.dimtable td{padding:12px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.55}
table.dimtable tr:last-child td{border-bottom:none}
.dcx{width:38px;font-weight:800;color:#fff;background:var(--accent);text-align:center;
  font-size:11px;vertical-align:middle!important}
.dnm{font-weight:700;width:150px}
.dqq{color:var(--accent2);font-weight:600;width:190px}
.dss{color:var(--muted)}
.dll{width:215px;color:var(--muted);font-size:11.5px}
.dll b{color:var(--ink);font-family:ui-monospace,Menlo,monospace;font-size:11px;margin-right:4px}
.dll div{padding:1px 0}

/* replay console */
.replaybar{display:flex;align-items:center;justify-content:space-between;margin-top:16px}
.rlab{font-size:10px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.rbtn{background:#fff;color:var(--accent);border:1px solid var(--accent);padding:5px 12px;
  border-radius:8px;font-weight:700;font-size:11.5px;cursor:pointer}
.rbtn:hover{background:var(--accent-soft)}
.console{background:#0f1424;color:#c8d3f0;border-radius:10px;padding:13px 15px;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11.5px;line-height:1.75;
  margin:8px 0 0;min-height:120px;max-height:300px;overflow:auto}
.console .ln{opacity:0;animation:fadein .22s forwards;white-space:pre-wrap}
.console .ok{color:#5fd08a}.console .warn{color:#ffbf5f}
.console .err{color:#ff7b72}.console .dim{color:#7681a8}
@keyframes fadein{to{opacity:1}}

/* stacked dimensions on the method page */
.dimrow{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;
  margin-bottom:12px;box-shadow:var(--shadow)}
.dimhead{display:flex;align-items:flex-start;gap:13px;flex-wrap:wrap;
  border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:12px}
.dcode.big{width:40px;height:34px;border-radius:9px;font-size:14px;flex-shrink:0;
  background:var(--accent);color:#fff;font-weight:800;display:inline-flex;align-items:center;justify-content:center}
.dimtitle{flex:1;min-width:200px}
.dimtitle h3{margin:0;font-size:17px}
.dimhead .dq{font-size:12.5px;color:var(--accent2);font-weight:600;margin-top:3px}
.dimbody{margin:0;font-size:13.5px;color:var(--muted);max-width:900px;line-height:1.62}
.dterms{margin-top:12px;border-top:1px solid var(--line);padding-top:10px}
.dtl{display:block;font-size:9.5px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;
  color:var(--muted);margin-bottom:6px}
.dt{font-size:12px;color:var(--muted);line-height:1.55;padding:2px 0}
.dt b{color:var(--ink);font-family:ui-monospace,Menlo,monospace;font-size:11.5px;margin-right:6px}

/* method-page flow diagram */
.flowwrap{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px 12px;
  box-shadow:var(--shadow);margin-bottom:16px}
.flow{width:100%;height:auto;display:block}
.flowcap{margin:10px 0 0;font-size:12px;color:var(--muted);line-height:1.55;text-align:center}
.flowcap b{color:var(--ink)}