/* LessonSky RC222: source-backed numbered topic tests; styles scoped to practice only. */
.sk-practice-subject-page .sk222-topic-list {align-items:start;gap:16px}
.sk-practice-subject-page .sk222-topic {
  --sk222-card:var(--sk196-card,var(--sk-card,#1c3453));
  --sk222-text:var(--sk196-text,var(--sk-text,#f1f7ff));
  --sk222-muted:var(--sk196-muted,var(--sk-text-muted,#c7d8ed));
  --sk222-line:var(--sk196-line,rgba(140,170,205,.48));
  --sk222-panel:var(--sk196-panel,var(--sk-card,#1b3654));
  --sk222-green:#388f78;--sk222-amber:#b67f24;
  color:var(--sk222-text)!important;gap:12px;
  border-radius:19px!important;
}
.sk-practice-subject-page .sk222-topic :where(h3,strong,summary) {color:var(--sk222-text)!important}
.sk-practice-subject-page .sk222-topic :where(p,small) {color:var(--sk222-muted)!important}
.sk-practice-subject-page .sk222-topic-head {display:flex;align-items:flex-start;justify-content:space-between;gap:14px}
.sk-practice-subject-page .sk222-topic-head h3 {margin:0 0 4px!important;font-size:1.12rem!important}
.sk-practice-subject-page .sk222-topic-head p {margin:0;font-size:.88rem;line-height:1.5}
.sk-practice-subject-page .sk222-topic-count {white-space:nowrap;display:inline-flex;align-items:center;gap:5px;padding:7px 11px;border:1px solid var(--sk222-line);border-radius:40px;font-weight:800;font-variant-numeric:tabular-nums;font-size:.87rem}
.sk-practice-subject-page .sk222-topic-count span {font-weight:500;color:var(--sk222-muted)}
.sk-practice-subject-page .sk222-progress {height:6px;border-radius:40px;overflow:hidden;background:var(--sk222-line)}
.sk-practice-subject-page .sk222-progress>span {height:100%;display:block;border-radius:40px;background:#3a977c;transition:width .15s ease}
.sk-practice-subject-page .sk222-tests {min-width:0}
.sk-practice-subject-page .sk222-tests>summary {cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:42px;font-size:.88rem;font-weight:750;border-top:1px solid var(--sk222-line);padding:11px 2px 5px;list-style:none}
.sk-practice-subject-page .sk222-tests>summary::-webkit-details-marker {display:none}
.sk-practice-subject-page .sk222-tests>summary::before {content:'⌄';font-size:1.25rem;line-height:1;color:var(--sk222-muted)}
.sk-practice-subject-page .sk222-tests:not([open])>summary::before {transform:rotate(-90deg)}
.sk-practice-subject-page .sk222-tests>summary small {margin-left:auto;font-size:.74rem;font-weight:550}
.sk-practice-subject-page .sk222-packages {display:grid;gap:9px;margin-top:9px}
.sk-practice-subject-page .sk222-package {
  display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;
  padding:11px 12px;min-width:0;border:1px solid var(--sk222-line);border-radius:13px;
  background:var(--sk222-panel);color:var(--sk222-text);
}
.sk-practice-subject-page .sk222-pack-info {display:flex;align-items:center;gap:11px;min-width:0}
.sk-practice-subject-page .sk222-status-mark {width:33px;height:33px;display:grid;place-items:center;flex:0 0 33px;border-radius:11px;background:var(--sk222-line);color:var(--sk222-text);font-weight:800;font-variant-numeric:tabular-nums}
.sk-practice-subject-page .sk222-pack-title {min-width:0;display:grid;gap:1px}
.sk-practice-subject-page .sk222-pack-title strong {font-size:.95rem;line-height:1.3}
.sk-practice-subject-page .sk222-pack-title small {font-size:.75rem;line-height:1.5;overflow-wrap:anywhere}
.sk-practice-subject-page .sk222-package.sk222-completed {border-color:#3c9b80;border-inline-start:4px solid #3c9b80;background:color-mix(in srgb,var(--sk222-panel) 90%,#4aba99)}
.sk-practice-subject-page .sk222-completed .sk222-status-mark {background:#23745e;color:#fff}
.sk-practice-subject-page .sk222-package.sk222-pending {border-color:#d69b35;border-inline-start:4px solid #d69b35;background:color-mix(in srgb,var(--sk222-panel) 90%,#e6b954)}
.sk-practice-subject-page .sk222-pending .sk222-status-mark {background:#98671f;color:#fff}
.sk-practice-subject-page .sk222-package form {display:block!important;margin:0!important;max-width:100%}
.sk-practice-subject-page .sk222-package .sk-btn {min-height:42px!important;font-size:.83rem!important;white-space:nowrap!important;padding:9px 14px!important;min-width:105px}
.sk-practice-subject-page .sk222-package form [data-sk-launch-status]:empty {display:none}
.sk-practice-subject-page .sk222-unavailable-action {max-width:135px;text-align:right;line-height:1.4}
.sk-practice-subject-page .sk222-legacy-hint {display:block!important;line-height:1.5;font-size:.75rem!important;padding-top:3px}
.sk-practice-subject-page .sk222-tests>summary:focus-visible,.sk-practice-subject-page .sk222-package :where(button):focus-visible {outline:3px solid var(--sk196-focus,#aed4ff)!important;outline-offset:3px}
@media(max-width:680px) {
 .sk-practice-subject-page .sk222-topic {padding:14px!important}
 .sk-practice-subject-page .sk222-package {grid-template-columns:minmax(0,1fr) auto;padding:10px;gap:6px}
 .sk-practice-subject-page .sk222-package .sk-btn {min-width:90px!important;padding:7px 9px!important;font-size:.79rem!important}
}
@media(max-width:350px) {
 .sk-practice-subject-page .sk222-package {grid-template-columns:minmax(0,1fr)}
 .sk-practice-subject-page .sk222-package form .sk-btn {width:100%}
}
@media(prefers-reduced-motion:reduce) {.sk-practice-subject-page .sk222-progress>span {transition:none}}

/* RC223: readable native difficulty tabs, no red/green-only state. */
.sk-practice-subject-page .sk223-level-tabs {display:flex;gap:8px;flex-wrap:wrap;padding:5px 0 7px}
.sk-practice-subject-page .sk223-level-tab {text-decoration:none!important;display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:9px 15px;border:1px solid var(--sk196-line,rgba(140,170,205,.6));border-radius:100px;background:var(--sk196-card,var(--sk-card,#1c3453));color:var(--sk196-text,var(--sk-text,#fff))!important;font-weight:700;font-size:.87rem}
.sk-practice-subject-page .sk223-level-tab.is-current {background:var(--sk-primary,#2b64b3)!important;color:#fff!important;border-color:var(--sk-primary,#2b64b3)!important;box-shadow:0 0 0 1px currentColor inset}
.sk-practice-subject-page .sk223-level-tab:focus-visible {outline:3px solid var(--sk196-focus,#b4daff)!important;outline-offset:3px}
.sk-practice-subject-page .sk223-level-intro {font-size:.81rem;line-height:1.6;color:var(--sk196-muted,var(--sk-text-muted,#c7d8ed));margin:0 0 13px}
.sk-practice-subject-page .sk223-level-tag {font-size:.73rem!important;font-weight:700;padding:2px 9px;border-radius:16px;border:1px solid var(--sk196-line,rgba(140,170,205,.6));display:inline-block;margin:3px 0}
@media(max-width:480px) {.sk-practice-subject-page .sk223-level-tab {flex:1 1 42%;padding:9px 6px}}