/* One navigation bar. Tools and supporting information open on demand. */
/* Without offset measurement the bar stays in flow, never behind the header. */
.acn-bar{position:static}.acn-bar[data-cc-offset-ready]{position:sticky;top:calc(var(--cc-header-offset,0px) + 12px)}
.cc-course-ready #my-notes :is(input,textarea){background:var(--card-bg,#fff)!important;color:var(--text-primary,#182642)!important;border-color:var(--border-color,#d6dcea)!important}
.cc-course-ready #my-notes{scroll-margin-top:90px}
.cc-course-ready .acn-bar{flex-wrap:nowrap;gap:8px;margin:12px 0 8px;padding:7px 9px;border-radius:14px;box-shadow:0 3px 14px #00000009}
.cc-course-ready .acn-bar .acn-main{font-size:14px;gap:7px;min-height:42px;padding:8px 12px;background:var(--card-bg,#fff);color:var(--text-primary,#182642);border:1px solid var(--border-color,#d6dcea)}
.cc-course-ready .acn-main>span{display:none}.cc-course-ready .acn-current{font-size:13px}.cc-course-ready .acn-prev,.cc-course-ready .acn-next{min-height:42px;font-size:13px;padding:8px 10px;white-space:nowrap}
.cc-tools{margin:0;position:relative;color:var(--text-primary,#182642);flex:none;font:inherit}
.cc-tools>summary{display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--border-color,#d6dcea);border-radius:10px;list-style:none;cursor:pointer;background:var(--card-bg,#fff)}
.cc-tools summary::-webkit-details-marker{display:none}.cc-tools>summary:hover,.cc-tools[open]>summary{background:var(--bg-color,#f4f6fb);border-color:var(--accent,#7461bf)}
.cc-tools-panel{position:absolute;right:0;top:calc(100% + 12px);width:min(310px,calc(100vw - 40px));max-height:70dvh;overflow:auto;padding:16px;background:var(--card-bg,#fff);border:1px solid var(--border-color,#d6dcea);border-radius:16px;box-shadow:0 14px 36px #0002;box-sizing:border-box;z-index:55}
.cc-tools-panel>strong{display:block;font-size:13px;margin:0 0 12px}.cc-tools-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.cc-tools .cc-tool{display:flex;align-items:center;justify-content:center;gap:9px;min-height:54px;padding:10px 8px;border-radius:11px;border:1px solid var(--border-color,#d6dcea);background:transparent;color:inherit;font:600 12px/1.4 system-ui,sans-serif;cursor:pointer;text-decoration:none}
.cc-tool svg{flex:none}.cc-tools .cc-tool:hover{background:var(--bg-color,#f4f6fb)}.cc-tools-extra{display:grid;gap:8px;margin-top:10px}.cc-tools-extra .cc-tool{min-height:42px;border-color:transparent;justify-content:flex-start;font-size:12px}
.cc-tools .acw-upgrades{margin:0;position:static;font:inherit}.cc-tools .acw-upgrades>summary{min-height:40px;border:0;padding:8px;font-size:12px}.cc-tools .acw-upgrade-panel{position:static;width:100%;max-height:none;padding:10px 0 0;border:0;box-shadow:none;background:transparent;box-sizing:border-box}.cc-tools .acw-upgrade-panel>div:first-child p{display:none}.cc-tools .acw-upgrade-panel>div:first-child b{display:none}.cc-tools .acw-upgrade-grid{margin:0;gap:8px}.cc-tools .acw-upgrade-grid a{font-size:12px;min-height:44px;padding:10px;align-items:flex-start}.cc-tools .acw-upgrade-grid small{font-size:11px}.cc-tools .acw-upgrade-grid i{width:28px;height:28px;font-size:16px}.cc-tools .acw-shop-link{font-size:12px;padding:6px 0;justify-content:flex-start;min-height:40px}
.cc-course-meta{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin:0 0 18px;font-size:12px;color:var(--text-secondary,#53627c)}
.cc-progress{flex:1;min-width:0}.cc-progress>summary{cursor:pointer;min-height:38px;display:flex;gap:8px;align-items:center;list-style:none}.cc-progress>summary::before{content:'›';font-size:18px}.cc-progress[open]>summary::before{transform:rotate(90deg)}.cc-progress>summary small,.cc-progress>summary span{font-size:12px;font-variant-numeric:tabular-nums;margin:0;color:inherit}.cc-progress .cp-card{margin:8px 0!important;padding:16px!important}.cc-progress .np-progress{gap:16px}.cc-progress .np-progress strong{font-size:23px}.cc-progress .np-progress-help{font-size:12px;margin-bottom:10px}.cc-course-meta .cc-final-link{font-size:12px;color:var(--text-secondary,#53627c);min-height:38px;display:inline-flex;align-items:center;text-decoration:none;white-space:nowrap}.cc-final-link:hover{text-decoration:underline}
.cc-course-ready .cp-lesson-head{margin:16px 0 20px}.cc-course-ready .cp-lesson-head h1{font-size:clamp(25px,3vw,36px);line-height:1.2}.cc-course-ready .cp-lesson-head p{font-size:15px;line-height:1.6}.cc-course-ready .cp-steps{margin-bottom:20px}.cc-course-ready .cp-step{min-height:44px; font-size:13px;padding:10px 8px}.cc-course-ready .cp-step>span{width:25px;height:25px;font-size:12px}.cc-course-ready .cp-breadcrumb{font-size:12px;margin-bottom:10px}
.cc-course-ready .cp-task{padding:24px;border-radius:18px;margin-bottom:18px}.cc-course-ready .cp-task h2{font-size:22px;line-height:1.3;margin:14px 0}.cc-course-ready .cp-task .cp-condition{font-size:16px;line-height:1.7}.cc-course-ready .cp-answer{margin-top:22px}.cc-course-ready .cp-answer label{font-size:13px}.cc-course-ready .cp-answer-row{gap:8px}.cc-course-ready .cp-answer-row input,.cc-course-ready .cp-answer-row select{min-height:46px;padding:12px;font-size:16px}.cc-course-ready .cp-task .cp-btn{min-height:44px;padding:10px 14px;font-size:13px}.cc-course-ready .cp-task .cp-actions{gap:8px;margin:14px 0 10px}.cc-course-ready .cp-feedback:empty{display:none}.cc-course-ready .cp-task>small.cp-muted{display:block;font-size:11px;line-height:1.55;max-width:78ch}.cc-course-ready .cp-task-stats{margin-top:14px;font-size:12px;color:var(--text-secondary,#53627c)}
.cc-task-support{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:15px 0}.cc-task-support>.acn-memo,.cc-task-support>.ash-widget{margin:0;min-width:0;border:1px solid var(--border-color,#d6dcea);border-radius:11px;background:transparent;font-size:13px}.cc-task-support>details[open]{grid-column:1/-1}.cc-task-support>details>summary{padding:11px 12px;min-height:44px;box-sizing:border-box;font-size:13px;line-height:1.5}.cc-task-support .acn-memo>summary small{display:none}.cc-task-support>.ash-widget>summary>span{width:19px;height:19px;font-size:12px}.cc-task-support .acn-memo-body{padding:0 16px 16px}.cc-task-support .acn-memo h3{font-size:17px}.cc-task-support .acn-note{font-size:12px!important}
/* Library keeps completion history visible, with a calmer hierarchy. */
.cl-library .cl-card{border-radius:18px;box-shadow:none;padding:20px;gap:12px;overflow:hidden}.cl-library .cl-card::before{opacity:.35}.cl-library .cl-card h2{font-size:17px;line-height:1.4;min-height:2.8em;margin:10px 0 14px}.cl-library .cl-topic-art{opacity:.16}.cl-library .cl-status{color:var(--text-secondary,#53627c);font-size:11px}.cl-library .cl-status::before{background:var(--text-secondary,#53627c);opacity:.5}.cl-library .cl-number{width:44px;height:44px;border-radius:13px;font-size:19px}.cl-library .cl-card-bottom{justify-content:flex-end;gap:10px;margin-top:16px}.cl-library .cl-card-bottom>span{font-size:11px;color:var(--text-secondary,#53627c)}.cl-library .cl-card-bottom .sf-button{min-height:42px;font-size:12px;padding:10px 12px}.cl-library .cl-edition{font-size:12px;line-height:1.5;padding:10px;border-radius:10px}.cl-library .cl-edition span{font-size:11px}.cl-library .cl-progress{font-size:12px}.cl-library .cl-card progress{height:5px}
.cc-tools :focus-visible,.cc-progress>summary:focus-visible,.cc-final-link:focus-visible{outline:3px solid var(--accent,#7864c6);outline-offset:3px}
@media(max-width:600px){.acn-bar[data-cc-offset-ready]{top:calc(var(--cc-header-offset,0px) + 6px)}.cc-course-ready .acn-bar{padding:6px 8px;gap:6px;margin:8px 0 4px}.cc-course-ready .acn-bar .acn-main{margin:0 auto 0 0;min-height:42px;padding:8px 10px;font-size:13px}.cc-course-ready .acn-current,.cc-course-ready .acn-prev{display:none}.cc-course-ready .acn-next{font-size:12px;min-height:42px;padding:8px}.cc-course-ready .cc-tools>summary{width:42px;height:42px}.cc-course-meta{gap:6px;margin-bottom:12px;font-size:11px}.cc-progress>summary{gap:5px;font-size:11px}.cc-progress>summary small,.cc-progress>summary span{font-size:10px}.cc-course-meta .cc-final-link{font-size:11px}.cc-course-ready .cp-task{padding:16px;border-radius:15px}.cc-course-ready .cp-task h2{font-size:19px}.cc-course-ready .cp-task .cp-condition{font-size:15px;line-height:1.65}.cc-course-ready .cp-answer-row{display:flex;flex-wrap:wrap}.cc-course-ready .cp-answer-row input,.cc-course-ready .cp-answer-row select{flex:1 1 125px;width:0;min-width:100px}.cc-course-ready .cp-answer-row button{flex:0 0 auto}.cc-course-ready .cp-step{font-size:11px;padding:9px 4px;gap:5px}.cc-course-ready .cp-step>span{display:none}.cc-task-support{gap:6px}.cc-task-support>details>summary{padding:11px 8px;font-size:12px}.cc-progress .np-progress{grid-template-columns:1fr 1fr}.cl-library .cl-card{padding:17px}.cl-library .cl-card h2{font-size:17px}.cl-library .cl-controls{gap:10px}}
@media(prefers-reduced-motion:reduce){.cl-library .cl-card,.cl-library .cl-card::before{animation:none;transition:none;transform:none}}
@media print{.cc-tools,.cc-course-meta,.cc-task-support .ash-widget{display:none!important}}
@media(max-width:360px){.cc-progress>summary{white-space:nowrap}.cc-progress:not([open])>summary [data-np-count],.cc-progress:not([open])>summary #cp-total-count{display:none}.cc-progress[open]>summary{flex-wrap:wrap;white-space:normal}.cc-course-meta .cc-final-link{font-size:10px}}

/* Compact visual viewport: keep course controls available at high zoom. */
.acn-bar[data-cc-compact="1"]{position:fixed;top:auto!important;bottom:calc(var(--cc-viewport-bottom,0px) + 8px + env(safe-area-inset-bottom));left:12px;right:12px;max-width:none;z-index:90;box-shadow:0 4px 24px #0003}.acn-bar[data-cc-compact="1"] .cc-tools-panel{top:auto;bottom:calc(100% + 8px);max-height:60dvh}.acn-bar{scroll-margin-top:calc(var(--cc-header-offset,0px) + 8px)}

.acn-dialog{max-height:min(85dvh,calc(var(--cc-viewport-height,100dvh) - 24px));box-sizing:border-box}.acn-dialog .acn-route a{overflow-wrap:anywhere}