/* Shared trainer design: Forest & Cream, with mobile layouts defined explicitly. */
:root{--muted:#5d675f;--line:#dadfd3;--pale:#e7eddf;--surface:#fffefa;--radius:18px}
body{line-height:1.5}h1,h2,h3{overflow-wrap:break-word;text-wrap:pretty}
.btn{font-size:15px;min-height:48px;border-radius:12px;padding:12px 18px}
.btn-small{font-size:14px;min-height:44px;padding:10px 14px}
.icon-btn{width:44px;height:44px;min-width:44px;border-radius:12px}
.text-link{font-size:14px;min-height:44px;text-underline-offset:4px}
.eyebrow{font-size:13px;font-weight:500;letter-spacing:0;text-transform:none}
.pill{font-size:13px;padding:5px 10px;font-weight:500}
.field-label,.check-field{font-size:15px}.field-hint,.small-description{font-size:14px;line-height:1.55}
.field input[type=number],.field select,.language-switcher select{font-size:16px;min-height:46px}
.segment button{font-size:14px;min-height:44px;padding:10px 14px}
.app-shell{grid-template-columns:224px minmax(0,1fr)}
.sidebar{padding:30px 20px 22px;background:var(--cream);overflow:auto;gap:12px}
.sidebar .brand{gap:9px}.sidebar .brand img{width:30px;height:30px;border-radius:9px}
.sidebar .brand-name{font-size:25px;letter-spacing:-1px}.sidebar .brand-sub{display:none}
.nav-list{margin-top:38px;gap:8px}.nav-link{font-size:15px;min-height:48px;padding:12px 14px}
.nav-link.active{background:var(--pale);color:var(--forest)}.nav-link.active .icon{color:var(--forest)}
.sidebar-bottom{border-top:1px solid var(--line);padding-top:18px}
.main{max-width:1280px;padding:36px 40px 48px;min-width:0;margin:0 auto}
.page-intro{margin-bottom:28px;gap:16px}.page-intro h1{font-size:38px;line-height:1.15}
.page-intro p{font-size:16px;line-height:1.55;margin-top:9px;max-width:62ch}
.section-head{gap:16px;margin-bottom:16px}.section-head h2{font-size:25px}
.back-link{font-size:14px;min-height:44px;display:inline-flex;align-items:center;margin-bottom:16px}
.header-settings{position:relative}.header-settings summary{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--pale);color:var(--forest);cursor:pointer;list-style:none}
.header-settings summary::-webkit-details-marker{display:none}
.header-settings-panel{position:absolute;right:0;top:54px;width:min(286px,calc(100vw - 32px));background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:0 12px 36px #18342618;z-index:55}
.header-settings-panel .account-trigger{width:100%;min-height:46px;margin-bottom:14px;font-size:15px}
.header-settings-panel .language-switcher{display:flex;max-width:none;margin:0 0 10px;gap:8px;align-items:center;justify-content:space-between}
.header-settings-panel .language-switcher span{display:flex;font-size:14px;gap:6px}
.header-settings-panel .language-switcher select{width:160px;max-width:65%}
.header-settings-panel .nav-link{padding:10px 0}

/* Today: the next session owns the first screen. */
.today-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px 28px;align-items:start}
.today-primary{min-width:0}.focus-card{display:grid;grid-template-columns:minmax(0,1fr) 136px;gap:18px 24px;align-items:center;padding:26px;background:var(--pale);border:0}
.focus-copy{min-width:0}.focus-copy .eyebrow{color:var(--forest)}
.focus-card h2{font-size:32px;margin-top:12px;line-height:1.12;max-width:22ch}
.focus-card p{font-size:16px;color:var(--muted);margin-top:9px}
.focus-position{display:block;font-size:14px;color:var(--muted);margin-top:10px}
.focus-card>.opening-thumbnail{width:136px;border-radius:9px}
.focus-card .resume-actions{grid-column:1/-1;display:flex;gap:8px 20px;flex-wrap:wrap;margin:0}
.review-focus{grid-template-columns:1fr}.daily-goal-row{display:flex;align-items:center;gap:14px;padding:18px 2px;font-size:14px;color:var(--muted)}
.daily-goal-row .goal-mini{flex:1;max-width:none;margin:0}.daily-goal-row strong{font-size:14px;white-space:nowrap;font-weight:500}
.today-aside{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px}
.today-aside h2{font-size:23px;margin-bottom:18px}.practice-stat{display:flex;justify-content:space-between;gap:12px;align-items:baseline;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}
.practice-stat strong{font-weight:600;color:var(--ink);text-align:right;flex-shrink:0}
.weekly-summary{font-size:14px;color:var(--muted);margin-top:18px}.week-marks{display:flex;gap:7px;margin-top:12px}
.week-marks>span{width:25px;height:25px;background:var(--pale);border-radius:50%;display:grid;place-items:center}
.week-marks>span.done{background:var(--forest);color:var(--cream)}.week-marks .icon{width:15px;height:15px}
.today-aside>.text-link{margin-top:9px;text-decoration:none}
.review-row{display:flex;align-items:center;gap:14px;padding:16px 0;border-block:1px solid var(--line)}
.review-row>div{flex:1;min-width:0}.review-row h3{font-size:17px}.review-row p{font-size:14px;color:var(--muted);margin-top:4px}
.today-layout .saved-section{grid-column:1/-1;margin:0}.saved-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.saved-card{grid-template-columns:72px minmax(0,1fr) 18px;padding:16px;gap:14px;border-radius:16px;background:transparent;box-shadow:none}
.saved-card>.icon{width:18px;height:18px;color:var(--muted)}.saved-card h3{font-size:23px}
.saved-card .course-card-meta{margin-top:7px}.saved-card .course-card-meta small{font-size:13px}
.saved-card .course-card-meta .pill{font-size:12px}.saved-card .opening-thumbnail{width:72px}
.repertoire-edit{margin-top:12px;text-decoration:none}

/* Library: meaningful chess positions, concise rows, clear bookmark controls. */
.library-toolbar{gap:12px;margin-bottom:18px}.search-field{min-width:0}
.search-field input{font-size:16px;min-height:50px;height:auto;padding:13px 16px 13px 44px;border-radius:12px}
.search-field input::placeholder{color:var(--muted)}.search-field .icon{top:16px}
.filter-toggle{font-size:14px;min-height:50px;height:auto;padding:10px 14px}
.library-caption{font-size:13px;margin-bottom:18px}.course-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.course-card{grid-template-columns:100px minmax(0,1fr);gap:18px;padding:18px;align-items:center;border-radius:16px}
.course-card .opening-thumbnail{width:100px}.course-card h2{font-size:25px;line-height:1.2;padding-top:2px}
.course-card .icon-btn{width:44px;height:44px;min-width:44px;margin:-6px -6px 0 0}
.course-card-meta{gap:7px 12px;margin-top:10px}.course-card-meta small{font-size:13px}.course-card-meta .pill{font-size:13px;padding:4px 9px}
.course-card-ready{font-size:13px;color:var(--muted);margin-top:11px}
.course-card-progress{margin-top:12px;grid-column:auto}.course-card-progress small{font-size:13px;line-height:1.45;margin-top:6px}
.course-review-due{font-size:13px;margin-top:8px}.course-card:hover,.saved-card:hover{transform:none}

/* Opening: one foundation card, then related branches; tools have their own space. */
.course-intro{margin-bottom:24px}.course-identity{display:flex;justify-content:space-between;align-items:center;gap:20px}
.course-identity>div{min-width:0}.course-identity h1{margin:0;font-size:38px}.course-identity>.opening-thumbnail{width:84px;flex-shrink:0;border-radius:8px}
.course-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:12px;font-size:14px;color:var(--muted)}
.course-intro .course-meta .pill{margin:0}.course-intro>p{font-size:16px;line-height:1.55;margin-top:14px;max-width:72ch}
.course-actions{margin-top:18px;justify-content:flex-start;gap:12px}
.course-layout{grid-template-columns:minmax(0,1fr) 280px;grid-template-areas:"foundation sidebar" "content sidebar";gap:24px 28px}
.course-foundation{grid-area:foundation;min-width:0}.course-content{grid-area:content;min-width:0}.course-side{grid-area:sidebar;top:24px;min-width:0}
.main-line-card{background:var(--pale);border:0;padding:24px;margin:0;border-radius:18px}
.foundation-label{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;color:var(--forest)}
.foundation-label .pill{padding:0;background:transparent;color:var(--forest);white-space:normal}
.main-line-card h2{font-size:26px;margin-top:12px}.main-line-card p{font-size:16px;margin-top:8px;line-height:1.55}
.main-line-card h2 a{color:inherit;text-decoration:none;display:inline-flex;align-items:center;gap:10px;min-height:44px}.main-line-card h2 a:hover{text-decoration:underline;text-underline-offset:4px}.main-line-card h2 a>.icon{width:17px;height:17px}
.main-line-card>.btn{margin-top:18px}.main-line-card .phase-path{margin:18px 0 0;gap:12px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));background:transparent;padding:0}
.main-line-card .phase-node{border:0;background:transparent;padding:0;font-size:14px;min-width:0;color:var(--muted);text-align:center;overflow-wrap:break-word;line-height:1.4}
.main-line-card .phase-node.current,.main-line-card .phase-node.complete{color:var(--forest);font-weight:600}
.course-content .section-head h2{font-size:25px}.course-content>.course-actions{margin:0 0 18px}.course-search{margin-bottom:16px}
.course-side-card{padding:22px;border:1px solid var(--line);border-radius:18px;background:var(--surface)}
.course-side-card h2{font-size:23px;margin-bottom:12px}.progress-caption{font-size:14px;margin-bottom:0}
.practice-options{margin-top:16px;border-top:1px solid var(--line)}
.practice-options summary,.study-reading-details summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:9px;min-height:48px;font-size:15px;color:var(--forest)}
.practice-options summary::-webkit-details-marker,.study-reading-details summary::-webkit-details-marker{display:none}
.practice-options summary>.icon:last-child,.study-reading-details summary>.icon:last-child{width:15px;height:15px;margin-left:auto}
.practice-options[open] summary>.icon:last-child,.study-reading-details[open] summary>.icon:last-child{transform:rotate(90deg)}
.practice-options-body{display:grid;gap:8px;padding-top:8px}.practice-options-body .btn{margin:0;white-space:normal;font-size:14px;justify-content:flex-start;text-align:left}
.practice-options-body .field-hint{margin:6px 0 0}.course-side .opening-map,.course-side .plan-details{margin-top:16px}
.course-side .plan-details>summary,.course-side .opening-map>summary{font-size:15px;padding:16px}
.course-side .opening-map small{font-size:12px}.course-side .opening-plan{padding:16px;border:0;background:transparent}
.chapter{border-radius:16px;margin-top:16px}.chapter summary{padding:18px;gap:12px}.chapter summary h3{font-size:17px}.chapter summary p{font-size:13px}
.chapter-number{width:32px;height:32px;min-width:32px;border:0;border-radius:50%;background:var(--pale);font:15px -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--forest)}
.chapter-description{font-size:14px;padding:0 18px 14px;line-height:1.55}.line-item{padding:16px 18px;gap:12px;grid-template-columns:25px minmax(0,1fr) 18px}
.line-item h3{font-size:16px;line-height:1.4}.line-item p,.premium-label{font-size:13px}.line-notation{font-size:13px;line-height:1.7;overflow-wrap:anywhere}
.line-stage{width:25px;height:25px}.line-stage>.icon{width:15px;height:15px}.line-count-note{padding:8px 18px 12px}
.line-detail-copy>p,.line-note p{font-size:16px}.line-detail-meta{font-size:14px}.line-detail-copy h1{font-size:36px}
.line-detail-board{padding:18px}.line-notes{padding:24px}.line-note h3{font-size:17px}.line-notes h2{font-size:26px}
.premium-callout{max-width:620px;padding:24px}.premium-callout .btn{margin-top:18px}.premium-callout h2{margin-top:10px}.workspace-line>.main>p{font-size:16px;margin-top:14px;max-width:70ch}

/* Study: the same game controls and board, with a stable evaluation rail. */
.workspace-study .main{max-width:1320px;padding-top:26px}
.study-top{align-items:flex-start;gap:20px;margin-bottom:20px}.study-top h1{font-size:28px;line-height:1.2;margin-top:6px;max-width:50ch}
.study-top .eyebrow{font-size:14px;color:var(--muted);letter-spacing:0;text-transform:none}.study-exit-actions{align-items:center}
.study-progress-row{display:flex;gap:16px;align-items:center;margin-bottom:22px;font-size:14px;color:var(--muted)}
.study-progress-row progress{flex:1;height:5px;border:0;border-radius:5px;overflow:hidden;appearance:none;accent-color:var(--forest);background:var(--line)}
.study-progress-row progress::-webkit-progress-bar{background:var(--line);border-radius:5px}
.study-progress-row progress::-webkit-progress-value{background:var(--forest);border-radius:5px}
.study-progress-row progress::-moz-progress-bar{background:var(--forest);border-radius:5px}
.study-progress-row .move-counter{font-size:14px;flex-shrink:0}
.study-layout{grid-template-columns:minmax(0,1.45fr) minmax(280px,.85fr);gap:32px;align-items:start}
.study-board-column{width:min(100%,calc(100dvh - 242px));max-width:680px;min-width:0;justify-self:center}
.study-board-caption{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px;color:var(--muted);font-size:13px}
.study-board-caption>span:last-child{font-size:12px;text-align:right}
.workspace-study .study-board-card{padding:0;max-width:none;width:100%;border:0;background:transparent;margin:0;border-radius:0}
.evaluated-board{grid-template-columns:10px minmax(0,1fr);gap:8px}.board-wrap{border-radius:4px;box-shadow:none}
.evaluation-rail{border-radius:4px;background:linear-gradient(to top,#faf8ef 50%,#304b3d 50%)}
.study-board-footer{display:flex;gap:10px;justify-content:space-between;align-items:flex-start;min-height:56px;padding-top:7px;position:relative}
.study-board-footer .board-tools{padding:0;display:flex;gap:2px;flex-shrink:0}
.board-tools .icon-btn{width:44px;height:44px;min-width:44px;border:0;background:transparent}
.evaluation-disclosure{font-size:13px;min-width:0;max-width:100%}.evaluation-disclosure>summary{gap:8px;font-size:13px;min-height:44px;white-space:nowrap}
.evaluation-disclosure summary strong{font-size:17px;font-variant-numeric:tabular-nums;color:var(--forest)}
.evaluation-perspective{font-size:12px;color:var(--muted)}
.evaluation-disclosure .evaluation-card,.evaluation-disclosure .evaluation-note{position:absolute;top:55px;left:0;width:min(360px,100%);padding:18px;background:var(--surface);box-shadow:0 8px 24px #17352016;border:1px solid var(--line);border-radius:12px;z-index:12;font-size:14px}
.evaluation-card .evaluation-change,.evaluation-card small{font-size:13px}.evaluation-note{margin:0}
.workspace-study .study-panel{display:block;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:24px;position:sticky;top:24px;min-width:0}
.study-panel .study-mode{display:block;padding:0;border:0;font-size:13px;color:var(--muted);margin-bottom:12px}
.study-panel h2{display:block;font:26px/1.2 Georgia,serif;margin:0 0 12px}
.study-panel>.prompt{display:block;font-size:16px;line-height:1.6;min-height:0;margin:0}
.study-reading-details{border-top:1px solid var(--line);margin-top:16px}
.study-reading-details>p,.study-reading-details .coaching-notes p{font-size:15px;line-height:1.6;color:var(--muted);margin:0 0 12px}
.study-reading-details>h3{font-size:15px;margin:16px 0 8px}.study-reading-details .move-idea{margin-top:0;padding:0;background:transparent}
.evaluation-disclosure{margin:0;border:0}.study-reading-details .played-notation{overflow-wrap:anywhere;font-variant-numeric:tabular-nums}
.study-desktop-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}
.study-desktop-actions .btn{flex:1;font-size:14px}.study-session-context{margin-top:18px;font-size:13px;color:var(--muted)}
.feedback{font-size:15px;line-height:1.5;margin-top:14px}.hint-box{font-size:15px;line-height:1.5;padding:14px;margin-top:14px}
.study-mobile-actions{display:none}.study-panel .move-idea p{font-size:15px}.study-panel .move-idea .eyebrow{font-size:13px}

/* The remaining screens share the same readable type and quieter surfaces. */
.metric-card{border:0;background:var(--surface);padding:24px}.metric-card p{font-size:14px}.metric-card strong{font-size:36px}
.metric-card .icon{margin-bottom:16px}.activity-head p{font-size:14px}.activity-day small{font-size:13px}.activity-box{font-size:13px}
.progress-row h3{font-size:16px}.progress-row p,.history-meta{font-size:13px}.progress-row strong{font-size:15px}.progress-row strong small{font-size:13px}
.empty-state p{font-size:16px}.empty-state h2{font-size:26px}.empty-state{padding:32px 24px}
.settings-card{padding:24px}.settings-card h2{font-size:26px}.privacy-item h3{font-size:16px}.privacy-item p,.license-links{font-size:14px}
.repertoire-setup h2{font-size:26px}.repertoire-setup p,.repertoire-setup select{font-size:16px}.repertoire-setup small{font-size:13px}
.goal-choice small{font-size:14px}.summary{max-width:650px;margin:18px auto}.summary h1{font-size:36px}.summary>p,.summary-next p{font-size:16px}
.summary-stats{background:transparent;border:0;border-block:1px solid var(--line);border-radius:0;padding:22px 0}.summary-stats small{font-size:14px}
.summary-next{padding:22px;background:var(--pale);border:0}.summary-next .eyebrow{margin-bottom:8px}.summary-plan{margin:18px 0;text-align:left}
.summary-plan>summary{font-size:15px;min-height:44px;cursor:pointer;color:var(--forest)}.summary>.btn{margin-top:10px}
.onboarding-shell{grid-template-columns:minmax(280px,.85fr) minmax(0,1fr)}.onboarding-brand{padding:36px 44px;min-width:0}
.onboarding-art{transform:scale(1.2);margin:24px 0}.onboarding-brand h2{font-size:40px}.onboarding-brand p{font-size:16px}
.onboarding-form{padding:40px 44px;max-width:620px}.onboarding-form h1{font-size:34px}.onboarding-form>.onboarding-description{font-size:16px}
.onboarding-benefits h3{font-size:16px}.onboarding-benefits p{font-size:14px}.onboarding-form .btn-quiet{font-size:14px}
.onboarding-final p{font-size:16px}.onboarding-form .language-switcher{max-width:100%;align-self:flex-start}
.modal p{font-size:16px}.modal h2{font-size:28px}.modal-actions{flex-wrap:wrap}.modal-actions .btn{min-width:120px}

@media(min-width:1600px){.main{padding:40px 48px}.study-layout{gap:36px}.workspace-study .study-board-column{max-width:680px}}
@media(max-width:1200px){.app-shell{grid-template-columns:200px minmax(0,1fr)}.sidebar{padding-inline:14px}.sidebar .brand-name{font-size:23px}.main{padding:30px 28px}.today-layout,.course-layout{grid-template-columns:minmax(0,1fr) 250px;gap:22px}.saved-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.course-grid{grid-template-columns:1fr}.study-layout{grid-template-columns:minmax(0,1.2fr) minmax(270px,.85fr);gap:24px}.workspace-study .study-panel{padding:20px}.study-panel h2{font-size:24px}.focus-card{grid-template-columns:minmax(0,1fr) 100px;padding:22px;gap:16px}.focus-card>.opening-thumbnail{width:100px}.focus-card h2{font-size:29px}.today-aside{padding:18px}}
@media(max-width:1000px){.app-shell{grid-template-columns:180px minmax(0,1fr)}.sidebar .brand-name{font-size:21px}.sidebar .brand img{width:26px;height:26px}.nav-link{font-size:14px;padding:12px}.main{padding:28px 24px}.today-layout{grid-template-columns:minmax(0,1fr)}.today-aside{grid-column:1;grid-row:3}.saved-section{grid-row:2}.today-aside .practice-stat{max-width:100%}.course-layout{grid-template-columns:minmax(0,1fr);grid-template-areas:"foundation" "content" "sidebar"}.course-side{position:static}.study-layout{grid-template-columns:minmax(0,1fr)}.study-board-column{width:min(100%,560px);max-width:none}.workspace-study .study-panel{width:100%;max-width:560px;position:static;justify-self:center}.study-desktop-actions{display:flex}.onboarding-form{padding:32px}.onboarding-brand{padding:30px}.page-intro h1,.course-identity h1{font-size:34px}}
@media(max-width:700px){
  .app-shell{display:block}.sidebar{display:none}.main{padding:18px 16px calc(104px + env(safe-area-inset-bottom));max-width:600px}
  .mobile-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 16px;border:0;min-height:64px}
  .mobile-header .brand{min-width:0;gap:8px}.mobile-header .brand img{width:28px;height:28px;flex-shrink:0}
  .mobile-header .brand-name{font-size:23px;letter-spacing:-.8px}.mobile-header .brand-sub{display:none}
  .mobile-nav{gap:6px;padding:6px 16px calc(8px + env(safe-area-inset-bottom));background:var(--cream);backdrop-filter:none}
  .mobile-nav .nav-link{min-width:0;min-height:56px;padding:8px 5px;font-size:12px;gap:4px;border-radius:12px;text-align:center}
  .mobile-nav .nav-link .icon{width:22px;height:22px}.page-intro{margin-bottom:20px}.page-intro h1{font-size:30px}.page-intro p{font-size:16px;margin-top:7px}
  .section-head{align-items:center;gap:12px;margin-bottom:12px}.section-head h2{font-size:23px}.section-head .text-link{font-size:13px;text-align:right;flex-shrink:0}
  .today-layout{display:flex;flex-direction:column;gap:24px}.today-primary{width:100%;order:0}.today-layout .saved-section{width:100%;order:1}.today-aside{width:100%;order:2;background:transparent;padding:18px 0 0;border:0;border-top:1px solid var(--line);border-radius:0}
  .focus-card{grid-template-columns:minmax(0,1fr) 94px;gap:16px 12px;padding:18px;border-radius:20px}.focus-card>.opening-thumbnail{width:94px}
  .focus-card h2{font-size:28px;margin-top:9px}.focus-card p{font-size:14px;margin-top:7px}.focus-position{font-size:13px;margin-top:8px}
  .focus-card .resume-actions{gap:4px;margin:0}.focus-card .resume-actions>.btn{width:100%;font-size:16px;min-height:50px}.focus-card .resume-actions>.text-link{font-size:13px;min-height:36px}
  .daily-goal-row{padding:16px 1px;font-size:13px;gap:10px}.daily-goal-row strong{font-size:13px}.today-aside h2{font-size:22px}.weekly-summary{font-size:14px}
  .review-row{gap:10px}.review-row h3{font-size:16px}.review-row p{font-size:14px}.review-row .stat-icon{display:none}
  .saved-grid{grid-template-columns:1fr;gap:0}.saved-card{grid-template-columns:64px minmax(0,1fr) 18px;padding:14px 0;gap:14px;border:0;border-bottom:1px solid var(--line);border-radius:0;background:transparent}
  .saved-card .opening-thumbnail{width:64px}.saved-card h3{font-size:22px}.saved-card .course-card-meta{margin-top:6px}.saved-card .course-card-meta small{font-size:13px}
  .library-toolbar{gap:10px;position:relative;margin-bottom:18px}.library-toolbar .search-field{flex-basis:100%;min-width:0}.library-toolbar .segment{flex:1;min-width:0}.library-toolbar .segment button{flex:1;font-size:13px;padding:9px 10px;min-height:44px}
  .filter-toggle{font-size:13px;padding:10px;min-height:52px}.library-caption{font-size:13px;gap:8px}.library-caption>span:last-child{display:none}
  .course-grid{grid-template-columns:1fr;gap:12px}.course-card{grid-template-columns:82px minmax(0,1fr);gap:12px;padding:13px;border-radius:16px}
  .course-card .opening-thumbnail{width:82px}.course-card h2{font-size:22px;line-height:1.15}.course-card .icon-btn{width:44px;height:44px;min-width:44px;margin:-7px -8px 0 0}
  .course-card-heading{gap:0}.course-card-meta{margin-top:7px;gap:5px 8px}.course-card-meta small,.course-card-meta .pill{font-size:12px}.course-card-meta .pill{padding:3px 7px}
  .course-card-ready,.course-card-progress small{font-size:13px;margin-top:8px}.course-card-progress{margin-top:10px}
  .back-link{margin-bottom:12px;font-size:14px}.course-intro{margin-bottom:20px}.course-identity{gap:12px}.course-identity h1{font-size:30px}.course-identity>.opening-thumbnail{width:66px}
  .course-meta{font-size:13px;gap:8px;margin-top:9px}.course-meta .pill{font-size:12px}.course-intro>p{font-size:15px;line-height:1.5;margin-top:12px}
  .course-actions{margin-top:14px;gap:10px}.course-actions .segment button{font-size:13px;padding:9px 11px;min-height:44px}.course-layout{gap:22px;grid-template-areas:"foundation" "content" "sidebar"}
  .main-line-card{padding:18px;border-radius:18px}.main-line-card h2{font-size:25px;margin-top:10px}.main-line-card p{font-size:15px;line-height:1.5;margin-top:8px}
  .foundation-label{font-size:13px;gap:8px}.foundation-label .pill{font-size:13px}.main-line-card>.btn{width:100%;font-size:15px;margin-top:16px}
  .main-line-card .phase-path{margin-top:16px}.main-line-card .phase-node{font-size:13px}.course-content .section-head h2{font-size:24px}
  .chapter summary{padding:16px 14px;gap:10px}.chapter summary h3{font-size:16px}.chapter summary p{font-size:13px}.chapter-description{font-size:14px;padding:0 14px 12px}
  .line-item{padding:14px;gap:10px;grid-template-columns:24px minmax(0,1fr) 15px}.line-item h3{font-size:16px}.line-item p{font-size:13px}.line-notation{font-size:12px}
  .line-detail-copy h1{font-size:30px}.line-detail-copy>p{font-size:16px}.line-detail-meta{font-size:14px}.line-notes{padding:18px}.line-note p{font-size:15px}
  .course-side-card{padding:18px}.practice-options-body .btn-full{width:100%;margin:0;padding:12px;min-height:46px;font-size:14px}
  .workspace-study .sidebar,.workspace-study .mobile-header,.workspace-study .mobile-nav{display:none}
  .workspace-study .main{padding:14px 12px calc(100px + env(safe-area-inset-bottom));max-width:600px}
  .study-top{gap:12px;margin-bottom:14px;align-items:flex-start}.study-top .eyebrow{font-size:13px}.study-top h1{font-size:20px;line-height:1.2;margin-top:4px;letter-spacing:-.5px}
  .study-top .study-exit-actions .btn{font-size:13px;min-height:44px;padding:10px}.study-exit-actions{gap:4px;flex-shrink:0}
  .study-progress-row{font-size:13px;gap:10px;margin-bottom:12px}.study-progress-row .move-counter{font-size:13px}
  .study-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:9px}.study-board-column{width:100%;max-width:none;min-width:0}
  .study-board-caption{margin-bottom:10px;font-size:12px;gap:8px}.study-board-caption .pill{font-size:12px}.study-board-caption>span:last-child{font-size:12px}
  .evaluated-board{grid-template-columns:10px minmax(0,1fr);gap:8px}.workspace-study .board-wrap{border-radius:3px}
  .study-board-footer{padding-top:4px;min-height:50px}.study-board-footer .board-tools{gap:0}.board-tools .icon-btn{width:44px;height:44px;min-width:44px}
  .evaluation-disclosure>summary{font-size:12px;gap:6px}.evaluation-disclosure summary strong{font-size:16px}.evaluation-disclosure>summary>.icon{width:12px}
  .workspace-study .study-panel{padding:14px 4px 0;background:transparent;border:0;border-top:1px solid var(--line);border-radius:0;position:static;max-width:none}
  .study-panel .study-mode{display:none}.study-panel h2{font:600 18px/1.3 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;letter-spacing:0;margin:0 0 8px}
  .study-panel>.prompt{display:block;font-size:16px;line-height:1.5;min-height:0}.study-session-context{display:none}.study-reading-details{margin-top:12px}
  .study-reading-details>summary{font-size:14px}.study-reading-details>p,.study-panel .move-idea p{font-size:15px}
  .evaluation-disclosure{margin:0}.study-desktop-actions{display:none}.study-mobile-actions{display:flex;gap:10px;position:fixed;left:0;right:0;bottom:0;border-top:1px solid var(--line);padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:var(--cream);z-index:40;align-items:center}
  .study-mobile-actions .btn{flex:1;font-size:15px;min-height:48px}.study-mobile-actions.auto-flow .auto-flow-caption{flex:1;font-size:13px}.study-mobile-actions.auto-flow .btn{flex:0 0 auto;font-size:14px}
  .study-panel>.feedback{font-size:15px;margin:12px 0}.study-panel .hint-box{font-size:15px;margin-top:12px}
  .metric-card{padding:18px;border-radius:16px}.metric-card p{font-size:14px}.metric-card strong{font-size:32px}.activity-card{padding:18px}.activity-head h2{font-size:24px}.activity-head p{font-size:13px}
  .activity-day small{font-size:12px}.progress-row{gap:10px}.progress-row h3{font-size:16px}.progress-row p{font-size:13px}.progress-row strong{font-size:14px}.history-meta{font-size:12px}
  .progress-row>span:nth-child(2){min-width:0;flex:1}.progress-row .stat-icon{display:none}.settings-grid{gap:18px}.settings-card{padding:20px}.settings-card h2{font-size:25px}
  .summary{margin:12px auto}.summary h1{font-size:30px}.summary>p{font-size:15px}.summary-stats strong{font-size:30px}.summary-stats small{font-size:13px}.summary-next h2{font-size:24px}.summary-next p{font-size:15px}
  .onboarding-shell{display:block}.onboarding-brand{padding:18px 20px;min-height:0;background:var(--cream);color:var(--ink);border-bottom:1px solid var(--line)}
  .onboarding-brand .brand-name{color:var(--ink);font-size:25px}.onboarding-brand .brand-sub,.onboarding-brand>div,.onboarding-art{display:none}
  .onboarding-form{padding:24px 20px 32px;max-width:540px}.onboarding-form h1{font-size:30px;margin:12px 0}.onboarding-form>.onboarding-description{font-size:16px;margin-bottom:24px}
  .onboarding-form>.account-trigger{min-height:44px;font-size:14px;margin:0 0 14px auto}.onboarding-form>.language-switcher{position:absolute;top:20px;right:20px;max-width:120px;font-size:14px}
  .onboarding-form>.language-switcher>span{display:none}.onboarding-form>.language-switcher select{font-size:14px;padding:8px;min-height:40px;max-width:120px}
  .onboarding-benefits{gap:18px}.onboarding-benefits h3{font-size:16px}.onboarding-benefits p{font-size:14px}.onboarding-form .btn-full{font-size:16px;min-height:50px}
  .modal{padding:22px}.modal p{font-size:15px}.modal-actions .btn{font-size:14px}.repertoire-setup{padding:20px}.repertoire-setup>h2{font-size:25px}
}
@media(max-width:370px){.main{padding-inline:16px}.mobile-header .brand-name{font-size:22px}.focus-card{grid-template-columns:minmax(0,1fr) 78px;padding:16px;gap:14px 10px}.focus-card>.opening-thumbnail{width:78px}.focus-card h2{font-size:25px}.course-card{grid-template-columns:64px minmax(0,1fr);gap:10px;padding:12px}.course-card .opening-thumbnail{width:64px}.course-card h2{font-size:21px}.course-card-meta small{font-size:12px}.library-toolbar .segment button{font-size:12px;padding:9px 7px}.filter-toggle{font-size:12px;gap:5px}.filter-toggle .icon{width:14px}.course-intro h1{font-size:28px}.course-identity>.opening-thumbnail{width:56px}.course-actions .segment button{font-size:12px}.study-top h1{font-size:18px}.study-board-caption>span:last-child{max-width:52%}.study-mobile-actions .btn{font-size:14px;padding:11px 8px}.study-mobile-actions.auto-flow .btn{font-size:13px;max-width:52%;white-space:normal}.onboarding-form{padding-inline:16px}.onboarding-form>.language-switcher{right:16px;max-width:100px}.onboarding-brand .brand-name{font-size:22px}.saved-card h3{font-size:21px}}
@media(max-width:370px){.evaluation-disclosure .engine-label{display:none}}
@media(prefers-reduced-motion:reduce){.btn,.icon-btn,.nav-link,.course-card,.saved-card{transition:none;animation:none}.btn:active{transform:none}}