:root{
  --bg:#f4f6f8; --surface:#ffffff; --surface2:#eef1f4; --line:#d5dbe1; --fg:#14202b; --muted:#4b5a68;
  --accent:#0b5c6b; --accent-fg:#ffffff; --accent-soft:#dff0f3;
  --warn:#8a4b00; --warn-bg:#fdf0dc; --bad:#a3262a; --bad-bg:#fbe7e7; --ok:#1d6b3a; --ok-bg:#e1f3e8; --info:#274c8f; --info-bg:#e5ecfa;
  --sample:#7a1f5c; --sample-bg:#f7e4f0; --focus:#1a5fd1;
  --shadow:0 8px 30px rgba(20,32,43,.18);
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0f161c; --surface:#17212a; --surface2:#1e2b36; --line:#33424f; --fg:#e8eef3; --muted:#a9b8c5;
  --accent:#5cc3d4; --accent-fg:#06232a; --accent-soft:#143640;
  --warn:#f2b866; --warn-bg:#3a2a10; --bad:#ff9a9d; --bad-bg:#401a1c; --ok:#7fd8a0; --ok-bg:#133322; --info:#9db9f2; --info-bg:#1a2848;
  --sample:#f0a8d6; --sample-bg:#3d1a31; --focus:#7aa8ff; --shadow:0 8px 30px rgba(0,0,0,.5); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0f161c; --surface:#17212a; --surface2:#1e2b36; --line:#33424f; --fg:#e8eef3; --muted:#a9b8c5;
  --accent:#5cc3d4; --accent-fg:#06232a; --accent-soft:#143640;
  --warn:#f2b866; --warn-bg:#3a2a10; --bad:#ff9a9d; --bad-bg:#401a1c; --ok:#7fd8a0; --ok-bg:#133322; --info:#9db9f2; --info-bg:#1a2848;
  --sample:#f0a8d6; --sample-bg:#3d1a31; --focus:#7aa8ff; --shadow:0 8px 30px rgba(0,0,0,.5); color-scheme:dark}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.5 "IBM Plex Sans","Segoe UI",system-ui,sans-serif;padding-inline:0}
.mono,td.num,.num{font-variant-numeric:tabular-nums}
.mono{font-family:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;font-size:13px}
button,select,input,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.app{display:grid;grid-template-columns:232px minmax(0,1fr);grid-template-rows:auto 1fr;min-height:100%}
/* top bar */
.top{grid-column:1/-1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:10px 24px;background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.brand{font-weight:700;letter-spacing:.01em}
.brand small{display:block;font-weight:500;color:var(--muted);font-size:12px}
.sample{background:var(--sample-bg);color:var(--sample);border:1px solid var(--sample);font-weight:700;font-size:12px;letter-spacing:.08em;padding:3px 10px;border-radius:999px;white-space:nowrap}
.spacer{flex:1}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--surface2)}
.seg button{border:0;background:transparent;padding:8px 16px;cursor:pointer;min-height:40px;font-weight:600;color:var(--muted)}
.seg button[aria-pressed="true"]{background:var(--accent);color:var(--accent-fg)}
.iconbtn{border:1px solid var(--line);background:var(--surface);border-radius:10px;min-height:40px;padding:0 12px;cursor:pointer}
/* nav */
.side{background:var(--surface);border-right:1px solid var(--line);padding:16px 12px;position:sticky;top:61px;align-self:start;height:calc(100vh - 61px);overflow:auto}
.side h2{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:12px 8px 6px}
.nav{display:flex;flex-direction:column;gap:2px}
.nav button{display:flex;align-items:center;gap:10px;text-align:left;border:0;background:transparent;border-radius:10px;padding:10px 12px;cursor:pointer;min-height:44px}
.nav button .n{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:8px;background:var(--surface2);font-size:12px;font-weight:700}
.nav button[aria-current="page"]{background:var(--accent-soft);font-weight:700}
.nav button[aria-current="page"] .n{background:var(--accent);color:var(--accent-fg)}
.nav .cnt{margin-left:auto;font-size:12px;background:var(--bad-bg);color:var(--bad);border-radius:999px;padding:1px 8px;font-weight:700}
/* main */
main{padding:24px;min-width:0}
.layout{display:grid;grid-template-columns:minmax(0,1fr);gap:20px}
.layout.docked{grid-template-columns:minmax(0,1fr) 440px}
h1{font-size:24px;line-height:1.2;margin:0 0 4px}
.lede{color:var(--muted);margin:0 0 16px;max-width:75ch}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:14px}
.panel .hd{display:flex;gap:12px;align-items:center;flex-wrap:wrap;padding:14px 16px;border-bottom:1px solid var(--line)}
.panel .hd h2{margin:0;font-size:16px}
.panel .bd{padding:16px}
.runbar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:16px}
.file{display:inline-flex;align-items:center;gap:8px;border:1px dashed var(--line);border-radius:10px;padding:8px 12px;background:var(--surface)}
.btn{border:1px solid var(--accent);background:var(--accent);color:var(--accent-fg);border-radius:10px;min-height:44px;padding:0 18px;font-weight:700;cursor:pointer}
.btn.ghost{background:transparent;color:var(--accent)}
.btn.sm{min-height:36px;padding:0 12px;font-size:14px}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:16px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.stat b{display:block;font-size:22px}
.stat span{color:var(--muted);font-size:13px}
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:2px 10px;font-size:12px;font-weight:700;white-space:nowrap}
.b-warn{background:var(--warn-bg);color:var(--warn)} .b-bad{background:var(--bad-bg);color:var(--bad)} .b-ok{background:var(--ok-bg);color:var(--ok)} .b-info{background:var(--info-bg);color:var(--info)} .b-mute{background:var(--surface2);color:var(--muted)}
.tablewrap{overflow-x:auto}
table{border-collapse:collapse;width:100%}
th{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);text-align:left;padding:8px 12px;border-bottom:1px solid var(--line);white-space:nowrap;background:var(--surface2)}
td{padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
td.num,th.num{text-align:right}
td.mono,td[data-l="Date"]{white-space:nowrap}
.keybar{border:1px solid var(--info);background:var(--info-bg);border-radius:12px;padding:12px 16px;margin-bottom:16px;display:flex;gap:16px;flex-wrap:wrap;align-items:baseline}
.keybar b{font-size:15px}
.k-found{color:var(--ok);font-weight:700}.k-miss{color:var(--bad);font-weight:700}.k-extra{color:var(--muted);font-weight:700}
tr.row{cursor:pointer}
tr.row:hover td{background:var(--surface2)}
tr.sel td{background:var(--accent-soft)}
tr.row:focus-visible{outline-offset:-3px}
.empty{padding:32px 16px;text-align:center;color:var(--muted)}
.two{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}
.note{font-size:13px;color:var(--muted)}
.callout{background:var(--info-bg);color:var(--fg);border-left:4px solid var(--info);padding:10px 14px;border-radius:8px;font-size:14px}
textarea,input[type=text],input[type=number],input[type=date],select{width:100%;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:8px 10px;min-height:40px}
textarea{min-height:110px;resize:vertical}
label{font-size:13px;font-weight:600;display:block;margin-bottom:4px}
.rules{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px}
.rule{border:1px solid var(--line);border-radius:10px;padding:12px;background:var(--surface)}
.rule .t{display:flex;gap:8px;align-items:center;margin-bottom:8px;font-weight:600}
.rule input[type=checkbox]{width:20px;height:20px}
.stepper{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.step{font-size:12px;padding:3px 10px;border-radius:999px;background:var(--surface2);color:var(--muted);font-weight:600}
.step.on{background:var(--accent);color:var(--accent-fg)}
.step.rej{background:var(--bad);color:#fff}
.code{background:var(--surface2);border:1px solid var(--line);border-radius:10px;padding:12px;white-space:pre-wrap;overflow-x:auto}
.flow{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.flow li{border:1px solid var(--line);border-radius:10px;padding:8px 12px;background:var(--surface);display:flex;gap:10px;align-items:flex-start}
.flow li b{background:var(--accent);color:var(--accent-fg);border-radius:6px;padding:0 8px;font-size:12px;margin-top:2px}
/* drawer */
.drawer{background:var(--surface);border:1px solid var(--line);border-radius:14px;align-self:start;position:sticky;top:77px;max-height:calc(100vh - 93px);overflow:auto}
.drawer .hd{position:sticky;top:0;background:var(--surface);z-index:2;display:flex;align-items:flex-start;gap:8px;padding:14px 16px;border-bottom:1px solid var(--line)}
.drawer .hd h2{margin:0;font-size:16px;flex:1}
.drawer .bd{padding:16px;display:flex;flex-direction:column;gap:16px}
.kv{display:grid;grid-template-columns:130px 1fr;gap:4px 12px;font-size:14px}
.kv dt{color:var(--muted)} .kv dd{margin:0;word-break:break-word}
.src{border:1px solid var(--line);border-radius:10px;overflow:hidden}
.src .cap{background:var(--surface2);padding:6px 12px;font-size:12px;font-weight:700;color:var(--muted);display:flex;justify-content:space-between;gap:8px}
.src table td{padding:6px 12px;font-size:13px}
.hl td{background:var(--warn-bg)}
.docs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.doc{border:1px solid var(--line);border-radius:10px;overflow:hidden;font-size:13px}
.doc .cap{background:var(--surface2);padding:6px 10px;font-weight:700}
.doc div.ln{padding:6px 10px;display:flex;justify-content:space-between;gap:8px;border-top:1px solid var(--line)}
.doc .diff{background:var(--warn-bg);color:var(--warn);font-weight:700}
.decide{display:flex;gap:8px;flex-wrap:wrap}
.scrim{display:none}
.saved{color:var(--ok);font-weight:600;font-size:13px}
.workshop{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.hidden{display:none!important}
/* tablet */
@media (max-width:1279px){
  .layout.docked{grid-template-columns:minmax(0,1fr)}
  .drawer{position:fixed;right:0;top:0;bottom:0;width:min(520px,100%);max-height:none;border-radius:0;z-index:40;box-shadow:var(--shadow)}
  .scrim.on{display:block;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:30}
}
@media (max-width:1099px){
  .app{grid-template-columns:minmax(0,1fr)}
  .side{position:sticky;top:61px;height:auto;z-index:15;border-right:0;border-bottom:1px solid var(--line);padding:8px 12px;overflow-x:auto}
  .side h2{display:none}
  .nav{flex-direction:row;gap:6px}
  .nav button{white-space:nowrap}
  .workshop{grid-template-columns:minmax(0,1fr)}
}
/* phone */
@media (max-width:699px){
  main{padding:16px}
  .top{padding:10px 16px;gap:10px}
  .brand small{display:none}
  .drawer{width:100%}
  .docs{grid-template-columns:minmax(0,1fr)}
  .kv{grid-template-columns:100px 1fr}
  table.stack thead{display:none}
  table.stack,table.stack tbody,table.stack tr,table.stack td{display:block;width:100%}
  table.stack tr{border-bottom:1px solid var(--line);padding:8px 12px}
  table.stack td{border:0;padding:3px 0;display:flex;justify-content:space-between;gap:12px;text-align:right}
  table.stack td::before{content:attr(data-l);color:var(--muted);font-size:12px;text-align:left;flex:none}
  table.stack td.num{text-align:right}
  .seg button{padding:8px 12px}
}
@media (prefers-reduced-motion:no-preference){.drawer{animation:in .18s ease-out}@keyframes in{from{opacity:.4;transform:translateX(14px)}}}
/* ---- working-app additions (Addendum A) ---- */
.overlay{position:fixed;inset:0;background:var(--bg);z-index:60;overflow:auto;padding:40px 24px}
.overlay .in{max-width:1200px;margin:0 auto}
.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:20px}
.card{border:1px solid var(--line);background:var(--surface);border-radius:14px;padding:18px;text-align:left;cursor:pointer;min-height:150px;display:flex;flex-direction:column;gap:6px}
.card:hover{border-color:var(--accent)} .card b{font-size:17px} .card .who{color:var(--muted);font-size:13px}
.card[aria-pressed="true"]{border:2px solid var(--accent);background:var(--accent-soft)}
.chip{border:1px solid var(--line);background:var(--surface);border-radius:999px;min-height:40px;padding:0 14px;cursor:pointer;font-weight:600}
.data{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px;margin-bottom:16px}
.drop{border:2px dashed var(--line);border-radius:12px;padding:14px;background:var(--surface);display:flex;flex-direction:column;gap:8px;min-height:160px;justify-content:center}
.drop.over{border-color:var(--accent);background:var(--accent-soft)}
.drop .fn{font-weight:700;word-break:break-all}
.drop .acts{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.linkbtn{background:none;border:0;color:var(--accent);text-decoration:underline;cursor:pointer;padding:0;font-weight:600}
a{color:var(--accent)}
.err{color:var(--bad);font-weight:600;font-size:14px}
.err::before{content:"⚠ "}
.errlist{border:1px solid var(--bad);background:var(--bad-bg);border-radius:12px;padding:12px 16px;margin-bottom:16px}
.errlist ul{margin:6px 0;padding-left:20px}
.maptbl select{min-width:180px}
.events{list-style:none;margin:6px 0 0;padding:0;display:flex;flex-direction:column;gap:6px;font-size:13px}
.events li{border-left:3px solid var(--line);padding:2px 0 2px 10px}
.steps2{display:flex;gap:8px;flex-wrap:wrap}
.steps2 div{border:1px solid var(--line);border-radius:10px;padding:6px 10px;font-size:12px;min-width:110px}
.steps2 div.on{border-color:var(--accent);background:var(--accent-soft)} .steps2 div.rej{border-color:var(--bad);background:var(--bad-bg)}
.steps2 b{display:block;font-size:13px}
.savebar{position:sticky;bottom:0;background:var(--surface);border-top:1px solid var(--line);padding:10px 16px;display:flex;gap:10px;align-items:center;flex-wrap:wrap;border-radius:0 0 14px 14px}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--fg);color:var(--bg);padding:10px 18px;border-radius:10px;z-index:80;font-weight:600}
.skel{height:14px;border-radius:6px;background:linear-gradient(90deg,var(--surface2),var(--line),var(--surface2));margin:10px 0}
.menu{position:relative}
.menu .pop{position:absolute;right:0;top:46px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:8px;min-width:220px;z-index:50}
.menu .pop button{display:block;width:100%;text-align:left;border:0;background:none;padding:10px;border-radius:8px;cursor:pointer}
.menu .pop button:hover{background:var(--surface2)}
.viewbanner{border:1px solid var(--warn);background:var(--warn-bg);color:var(--fg);border-radius:12px;padding:10px 14px;margin-bottom:16px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.flagrow td:first-child{border-left:3px solid transparent}
.sev-High{color:var(--bad);font-weight:700}.sev-Medium{color:var(--warn);font-weight:700}.sev-Low{color:var(--muted);font-weight:700}
@media (max-width:1099px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:699px){.cards{grid-template-columns:minmax(0,1fr)}.overlay{padding:20px 16px}.drop{min-height:auto}.drop .dz{display:none}.menu .pop{right:-60px}}
.drawer .docs{grid-template-columns:minmax(0,1fr)}
.layout.docked .tablewrap table td[data-l="Vendor"],.layout.docked td[data-l="Account"]{min-width:140px}

/* DD review 1: dock only at >=1600; 1280-1599 overlay sheet without dimming */
.layout.docked{grid-template-columns:minmax(0,1fr)}
.drawer{position:fixed;right:0;top:0;bottom:0;width:min(520px,100%);max-height:none;border-radius:0;z-index:40;box-shadow:var(--shadow)}
@media (min-width:1280px){.scrim.on{display:none!important}}
@media (min-width:1600px){.layout.docked{grid-template-columns:minmax(0,1fr) 480px}
  .drawer{position:sticky;top:77px;bottom:auto;right:auto;width:auto;max-height:calc(100vh - 93px);border-radius:14px;z-index:auto;box-shadow:none}}
/* DD review 2: comparison table */
.cmp{width:100%;font-size:13px}.cmp th{font-size:11px}.cmp td{padding:7px 10px}
.cmp td.diff{background:var(--warn-bg);color:var(--warn);font-weight:700}
.cmp td.diff::after{content:" differs";font-weight:600;font-size:11px}
/* DD review 3: phone header */
.short,.ph-only{display:none}
@media (max-width:699px){
  .top{position:static;flex-wrap:nowrap;gap:8px}.side{top:0}
  .brand{font-size:14px;white-space:nowrap}.top>.sample{display:none}
  .long{display:none}.short{display:inline}
  #key,#theme{display:none!important}
  .ph-only{display:block}
  .seg button{padding:6px 8px;font-size:13px;min-height:40px}
  .chip{padding:0 10px}
  .drawer{top:0}
}
.phone-sample{display:none}
@media (max-width:699px){.phone-sample{display:inline-flex;margin-bottom:10px}}
/* DD review 4: compact file rows */
.files{background:var(--surface);border:1px solid var(--line);border-radius:12px;margin-bottom:16px}
.fileline{display:flex;gap:10px 14px;align-items:center;flex-wrap:wrap;padding:10px 14px;border-top:1px solid var(--line)}
.fileline:first-child{border-top:0}
.fileline.over{background:var(--accent-soft)}
.fileline .k{color:var(--muted);font-size:13px;min-width:130px}
.fileline .fn{font-weight:700}
.data .drop{grid-column:1/-1}
/* DD review 6, 7 */
.nowrap{white-space:nowrap}
.overlay .in{min-height:calc(100vh - 80px);display:flex;flex-direction:column;justify-content:center}

/* DD nits round 2 */
.rules{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:1279px){.rules{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:699px){.rules{grid-template-columns:minmax(0,1fr)}}
.dialogbg{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:60;display:grid;place-items:center;padding:16px}
.dialog{background:var(--surface);border-radius:14px;box-shadow:var(--shadow);max-width:600px;width:100%;padding:20px;max-height:90vh;overflow:auto}
.dialog h1{font-size:20px;margin-bottom:12px}.dialog .panel{border:0}.dialog .panel .bd{padding:0}
.ph-only2{display:none}
.fl1{display:flex;align-items:center;gap:8px}
@media (max-width:699px){.ph-only2{display:block;padding:8px 12px}.dt-only{display:none}.ph-only2 .fn{font-size:12px;word-break:break-all}.ph-only2 .note{font-size:12px}}

.n1000{display:none}
@media (max-width:999px){.w1000{display:none!important}.n1000{display:block}span.n1000{display:inline-flex}}
@media (max-width:699px){table.stack td.w1000{display:none!important}}

.stats{grid-template-columns:repeat(auto-fit,minmax(130px,1fr))}