.study-seat{position:relative;height:100%;min-height:0;min-width:0;contain:layout paint;isolation:isolate;overflow:hidden}.study-app,.study-seat{--bg-canvas: #161412;--bg-sunken: #110f0d;--bg-surface: #1e1b18;--bg-raised: #26231f;--bg-glass: #1e1b18f0;--bg-glass-strong: #1e1b18fa;--bg-hover: #fff1dc0b;--bg-selected: #2d2521;--line-soft: #f5e6cf12;--line: #332f2a;--line-strong: #4a443c;--text: #efe9df;--text-dim: #c5bdb1;--text-muted: #999184;--text-faint: #6f685e;--accent: #c93d22;--accent-soft: #ec6a4a;--accent-ink: #fff8f2;--accent-glow: #c93d2247;--ok: #5fb58a;--warn: #d9a441;--bad: #d4608a;--info: #86a9c6;--paper: #ece4d6;--paper-ink: #201b15;--paper-dim: #5d5448;--paper-rule: #20160c14;--shadow-card: 0 0 0 1px var(--paper-rule), 0 2px 4px #00000026, var(--shadow-lg);--radius-card: 16px;--glass-blur: 0px;--glass-sheen: #fff4e30a;--shadow-sm: 0 1px 2px #0000004d, 0 2px 8px -4px #00000080;--shadow-md: 0 14px 34px -20px #000000d9;--shadow-lg: 0 30px 70px -30px #000000f2;--ring: 0 0 0 3px #c93d2240;--font-ui: "Inter", "Segoe UI Variable Text", "Segoe UI", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;--font-display: "Inter Display", "Segoe UI Variable Display", "SF Pro Display", "Segoe UI", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;--radius: 12px;--radius-sm: 8px;--ease: cubic-bezier(.2, .7, .3, 1);--ease-out: cubic-bezier(.16, 1, .3, 1);color-scheme:dark}.study-app[data-theme=light],.study-seat:has(>.study-app[data-theme=light]){--bg-canvas: #f1ede6;--bg-sunken: #e8e3da;--bg-surface: #faf8f4;--bg-raised: #ffffff;--bg-glass: #faf8f4f0;--bg-glass-strong: #faf8f4fa;--bg-hover: #2a1c0e0b;--bg-selected: #f5e4dc;--line-soft: #2a1c0e12;--line: #ddd5c9;--line-strong: #c5bbad;--text: #1e1a15;--text-dim: #453e35;--text-muted: #6e665b;--text-faint: #9c9488;--accent: #c03a1f;--accent-soft: #d44f2e;--accent-ink: #fffaf5;--accent-glow: #c03a1f33;--ok: #23845a;--warn: #a66a12;--bad: #b03a68;--info: #3b6f9c;--paper: #fffdf8;--paper-ink: #1e1a15;--paper-dim: #5f574c;--paper-rule: #20160c12;--glass-sheen: #ffffffb3;--shadow-sm: 0 1px 2px #2a1c0e14, 0 2px 8px -4px #2a1c0e26;--shadow-md: 0 14px 34px -20px #2a1c0e38;--shadow-lg: 0 30px 70px -30px #2a1c0e45;--ring: 0 0 0 3px #c03a1f33;color-scheme:light}.study-app :is(.today-card,.question-area:not(.flash-area) .question-card,.flash-area .question-meta,.flash-area .card-progress,.flip-face,.exam-sheet){--text: var(--paper-ink);--text-dim: #463e34;--text-muted: var(--paper-dim);--text-faint: #867d70;--line: #20160c26;--line-soft: #20160c14;--line-strong: #20160c40;--bg-hover: #20160c0b;--bg-surface: #20160c08;--bg-sunken: #20160c0d;--bg-raised: var(--paper);--bg-selected: #c93d2214;--accent-soft: #b3361c;--accent-glow: #c93d2233;--ok: #2c7a53;--warn: #93600f;--bad: #a8345f;--info: #3b6f9c;--ring: 0 0 0 3px #c93d2233;color:var(--text);color-scheme:light}:where(.study-app){*{box-sizing:border-box}button,input,textarea,select{font:inherit}button{cursor:pointer;color:inherit;background:color-mix(in srgb,var(--text) 5%,transparent);border:1px solid var(--line);border-radius:var(--radius-sm);padding:9px 14px;transition:background .15s var(--ease),border-color .15s var(--ease)}button:hover:not(:disabled){background:color-mix(in srgb,var(--text) 11%,transparent);border-color:var(--line-strong)}button:disabled{cursor:default;opacity:.4}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--accent-soft);outline-offset:3px}button.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600}button.primary:hover:not(:disabled){background:var(--accent-soft)}input,textarea,select{width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg-sunken);padding:12px;color:var(--text);line-height:1.6;transition:border-color .15s var(--ease),box-shadow .15s var(--ease),background .15s var(--ease)}input:focus,textarea:focus,select:focus{border-color:var(--accent-soft);background:var(--bg-surface);box-shadow:var(--ring);outline:none}input::placeholder,textarea::placeholder{color:var(--text-faint)}textarea{resize:vertical}input[type=checkbox]{width:17px;height:17px;accent-color:var(--accent)}label{display:flex;flex-direction:column;gap:8px;margin:19px 0;color:var(--text)}label small,small,.muted{color:var(--text-muted)}small{font-size:15px;line-height:1.6}h1,h2,h3,h4,p{margin-top:0}h1{font-family:var(--font-display);font-size:28px;font-weight:650;letter-spacing:-.02em;line-height:1.35;margin-bottom:10px}h2{font-family:var(--font-display);font-size:19px;font-weight:600;letter-spacing:-.01em}h3{font-size:18px;font-weight:550}h4{font-size:15px}p{line-height:1.8}strong{font-weight:550}.sidebar{width:244px;flex-shrink:0;border-right:1px solid var(--line-soft);background:var(--bg-canvas);position:sticky;top:0;align-self:flex-start;height:100%;min-height:min(700px,100dvh);padding:26px 14px 16px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:11px;margin:0 8px 34px;font-family:var(--font-display);font-size:16px;font-weight:650;letter-spacing:-.01em}.brand small{display:block;font-family:var(--font-ui);font-size:15px;font-weight:400;letter-spacing:0;margin-top:3px;white-space:nowrap}.brand-mark{display:grid;place-items:center;width:30px;height:30px;flex-shrink:0;color:var(--text)}.brand-mark svg{display:block}.collapse-toggle{margin-left:auto;width:22px;height:22px;display:inline-flex;align-items:center;justify-content:center;padding:0;border:none;border-radius:6px;background:transparent;color:var(--text-muted);font-size:15px;line-height:1;cursor:pointer;transition:background .18s var(--ease),color .18s var(--ease)}.collapse-toggle:hover{background:var(--bg-hover);color:var(--text)}.nav{position:relative;display:flex;width:100%;align-items:center;gap:12px;border:none;background:transparent;text-align:left;padding:9px 12px;margin:1px 0;color:var(--text-dim);transition:background .15s var(--ease),color .15s var(--ease)}.nav:hover:not(:disabled){background:transparent;color:var(--text)}.nav .icon{transition:transform .2s var(--ease-out),color .15s var(--ease)}.nav:hover:not(:disabled):not(.active) .icon{transform:translate(2px)}.nav.active{background:transparent;color:var(--text);font-weight:600}.side-nav{position:relative}.side-nav>.nav{z-index:1}.nav-mark{position:absolute;top:0;left:0;right:0;border-radius:var(--radius-sm);background:color-mix(in srgb,var(--text) 8%,transparent);pointer-events:none;transition:transform .42s var(--ease-out),height .42s var(--ease-out);animation:mark-in .3s var(--ease-out)}.nav-mark:before{content:"";position:absolute;left:-14px;top:9px;bottom:9px;width:3px;border-radius:0 3px 3px 0;background:var(--text)}.nav-upkeep{padding-block:7px;font-size:15px;color:var(--text-muted)}.nav:not(.nav-upkeep)+.nav-upkeep{margin-top:21px}.nav:not(.nav-upkeep)+.nav-upkeep:after{content:"";position:absolute;top:-11px;left:12px;right:12px;height:1px;background:var(--line-soft)}.icon{font-size:21px;display:inline-flex;align-items:center;flex-shrink:0}.sidebar .icon{width:20px;justify-content:center}.sidebar .icon svg{display:block}.nav-count{margin-left:auto;font-size:15px;font-variant-numeric:tabular-nums;color:var(--text-faint);font-weight:400}.sidebar.is-narrow{width:62px;padding:20px 6px}.sidebar.is-narrow .brand{flex-direction:column;margin:0 auto 28px}.sidebar.is-narrow .collapse-toggle{margin:4px auto 0}.sidebar.is-narrow .brand>div,.sidebar.is-narrow .nav-count,.sidebar.is-narrow .local-status,.sidebar.is-narrow .guide-sidebar,.sidebar.is-narrow .resume-nav .nav-label small{display:none}.sidebar.is-narrow .guide-inline{display:block}.sidebar.is-narrow .nav{font-size:0;gap:0;padding:11px;justify-content:center}.sidebar.is-narrow .nav-mark:before{left:-6px}.sidebar.is-narrow .nav .icon svg{width:20px;height:20px}.sidebar-bottom{margin-top:auto}.local-status{font-size:15px;color:var(--text-muted);display:flex;align-items:center;gap:8px;padding:20px 15px}.local-status span{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px color-mix(in srgb,var(--ok) 20%,transparent)}main{flex:1;min-width:0;min-height:100%}.topbar{height:51px;border-bottom:1px solid var(--line-soft);display:flex;justify-content:space-between;align-items:center;padding:0 25px;font-size:15px;position:sticky;top:0;z-index:12;background:var(--bg-canvas)}.crumbs{display:flex;align-items:center;min-width:0}.crumb{color:var(--text-muted);white-space:nowrap}.crumb.current{color:var(--text);font-weight:600;overflow:hidden;text-overflow:ellipsis}.breadcrumb{color:var(--text-faint);margin:0 12px}.top-status{display:inline-flex;align-items:center;gap:7px;font-size:15px;color:var(--text-muted);white-space:nowrap}.top-status .dot{width:6px;height:6px;border-radius:50%;background:var(--text-faint);flex-shrink:0}.top-status .dot.on{background:var(--ok);box-shadow:0 0 0 3px color-mix(in srgb,var(--ok) 22%,transparent)}.top-status .dot.busy{background:var(--warn);animation:dot-pulse 1.4s var(--ease) infinite}.top-right{display:inline-flex;align-items:center;gap:10px}.inbox{position:relative}button.inbox-toggle{position:relative;display:inline-grid;place-items:center;width:30px;height:30px;padding:0;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--text-muted)}button.inbox-toggle:hover:not(:disabled),button.inbox-toggle[aria-expanded=true]{background:var(--bg-hover);border-color:var(--line-soft);color:var(--text)}button.inbox-toggle.has-unread{color:var(--text)}.inbox-badge{position:absolute;top:-8px;right:-10px;min-width:22px;height:22px;padding:0 6px;border-radius:999px;background:var(--accent);color:var(--accent-ink);font-size:15px;font-weight:700;line-height:22px;text-align:center;box-shadow:0 0 0 2px var(--bg-canvas);animation:badge-in .28s var(--ease)}.inbox-panel{position:absolute;top:calc(100% + 8px);right:-6px;z-index:30;width:min(380px,calc(100vw - 32px));max-height:min(70vh,520px);display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-raised);box-shadow:var(--shadow-lg);animation:rise-in .2s var(--ease)}.inbox-head{display:flex;align-items:baseline;gap:8px;padding:12px 14px 10px;border-bottom:1px solid var(--line-soft)}.inbox-head strong,.inbox-head small{font-size:15px}button.inbox-read-all{margin-left:auto;padding:4px 9px;border:0;background:transparent;color:var(--accent-soft);font-size:15px}.inbox-list{list-style:none;margin:0;padding:6px;overflow-y:auto;overscroll-behavior:contain}button.inbox-item{position:relative;display:flex;flex-direction:column;gap:4px;width:100%;padding:9px 12px 10px 20px;border:0;border-radius:var(--radius-sm);background:transparent;text-align:left;color:var(--text-dim)}button.inbox-item.unread{color:var(--text)}button.inbox-item.unread:before{content:"";position:absolute;left:8px;top:15px;width:6px;height:6px;border-radius:50%;background:var(--accent)}button.inbox-item:disabled{opacity:.5}.inbox-item-top{display:flex;align-items:center;gap:6px;min-width:0;font-size:15px;color:var(--text-muted)}.inbox-item-top small{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:15px}.inbox-time{flex:none;margin-left:auto}.inbox-kind{flex:none;padding:1px 7px;border-radius:999px;background:color-mix(in srgb,var(--accent) 14%,transparent);color:var(--accent-soft);font-size:15px}.inbox-kind.k-coach,.inbox-kind.k-followup{background:color-mix(in srgb,var(--info) 16%,transparent);color:var(--info)}.inbox-kind.k-link,.inbox-kind.k-variant{background:color-mix(in srgb,var(--ok) 16%,transparent);color:var(--ok)}.inbox-count{flex:none;font-size:15px;color:var(--text-muted)}.inbox-prompt{font-size:15px;font-weight:550;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.inbox-detail{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:15px;line-height:1.55;color:var(--text-muted)}button.inbox-undo{margin:0 0 5px 20px;padding:3px 5px;border:0;background:transparent;color:var(--accent-soft);font-size:15px}.inbox-empty{margin:0;padding:18px 16px 20px;font-size:15px;line-height:1.7}.page{max-width:1200px;margin:0 auto;padding:32px 36px 56px}:is(.page,.review-page)>*{animation:page-in .4s var(--ease-out) backwards}:is(.page,.review-page)>:nth-child(2){animation-delay:40ms}:is(.page,.review-page)>:nth-child(3){animation-delay:80ms}:is(.page,.review-page)>:nth-child(n+4){animation-delay:.12s}main>:is(.page,.review-page,.board-page){transition:opacity .14s ease-in,transform .14s ease-in}main.is-leaving>:is(.page,.review-page,.board-page){opacity:0;transform:translateY(-6px);pointer-events:none}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:22px}.page-heading p{margin-bottom:0}.page-heading button{flex-shrink:0}.eyebrow{font-size:15px;letter-spacing:2px;color:var(--text-muted);margin-bottom:13px}.stats{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:25px 0;margin:30px 0 34px}.stats>div{padding:0 25px;border-right:1px solid var(--line)}.stats>div:first-child{padding-left:0}.stats>div:last-child{border:0}.stats strong{display:block;font-size:32px;line-height:1.1;margin-bottom:12px;font-weight:450}.stats span{font-size:15px;color:var(--text-muted)}.section-heading{display:flex;align-items:center;justify-content:space-between;margin:36px 0 17px;gap:12px;flex-wrap:wrap}.section-heading-actions{display:flex;gap:8px;flex-wrap:wrap}.section-heading h2{margin:0}.section-heading h2 span{font-size:15px;color:var(--text-muted);margin-left:10px}.section-heading button{font-size:15px;border:0;padding:7px 12px;color:var(--text-dim);background:transparent}.section-heading button:hover:not(:disabled){background:var(--bg-hover);color:var(--text);border-color:transparent}.ghost-btn{border:0;background:transparent;color:var(--text-muted);padding:6px 10px;font-size:15px;border-radius:8px}.ghost-btn:hover:not(:disabled){color:var(--text);background:var(--bg-hover);border:0}.deck-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}.deck{border:1px solid var(--line);background:var(--bg-glass);backdrop-filter:blur(var(--glass-blur)) saturate(1.4);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(1.4);border-radius:15px;padding:21px;box-shadow:inset 0 1px 0 var(--glass-sheen);transition:border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease)}.deck:hover{border-color:var(--line-strong);background:var(--bg-glass-strong);transform:translateY(-1px);box-shadow:inset 0 1px 0 var(--glass-sheen),var(--shadow-md)}.deck-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:23px}.deck-icon{color:var(--accent-soft);font-size:26px}.tag{border:1px solid var(--line);border-radius:30px;padding:4px 9px;color:var(--text-dim);font-size:15px;display:inline-block}.tag.bad{border-color:var(--bad);color:var(--bad)}.deck h3{margin-bottom:9px;line-height:1.55}.deck p{font-size:15px;color:var(--text-muted);margin-bottom:18px;min-height:21px}.deck-actions{display:flex;flex-wrap:wrap;gap:7px;border-top:1px solid var(--line-soft);margin-top:20px;padding-top:16px}.deck-actions button{flex:1 1 auto;min-width:56px;padding:8px 10px;font-size:15px}.deck-actions button.primary{flex-basis:100%;padding:10px 12px;margin-bottom:3px}.resume{display:flex;align-items:center;justify-content:space-between;text-align:left;background:transparent;border:0;border-radius:var(--radius-sm);width:100%;padding:12px 10px;margin-bottom:0;transition:background .15s var(--ease)}.resume:hover:not(:disabled){background:var(--bg-hover)}.resume>span:first-child{display:flex;align-items:baseline;gap:12px;min-width:0}.resume .eyebrow{margin:0;font-size:15px;letter-spacing:0;text-transform:none;color:var(--text-faint)}.resume strong{font-size:15px;font-weight:600}.resume>span:last-child{font-size:15px;font-variant-numeric:tabular-nums;color:var(--text-muted)}.resume b{margin-left:12px;color:var(--text-dim)}.resume-row{display:flex;align-items:stretch;gap:10px;margin-bottom:0;border-bottom:1px solid var(--line-soft)}.resume-row .resume{margin-bottom:0;flex:1;min-width:0}.resume-row .ghost-btn{flex-shrink:0;align-self:center}.empty{padding:60px 28px;text-align:center;border:1px dashed var(--line-strong);border-radius:15px;color:var(--text-dim)}.empty h2{color:var(--text);margin:17px 0 10px}.empty-icon{font-size:35px;color:var(--accent-soft)}.empty form{text-align:left;max-width:540px;margin:0 auto}.draft-row{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;width:100%;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:10px 4px;text-align:left}.draft-open{display:flex;flex:1;min-width:0;align-items:center;justify-content:space-between;gap:12px;border:0;background:transparent;padding:8px 0;text-align:left}.draft-open>span:first-child{min-width:0;overflow-wrap:anywhere}.draft-row small{display:block;margin-top:5px}.draft-open>span:last-child{font-size:15px;color:var(--accent-soft)}.jobs{margin-top:30px}.job{display:flex;gap:14px;padding:17px;background:var(--bg-surface);border-radius:10px;margin:10px 0}.job>span{color:var(--accent-soft);font-size:23px}.job small{display:block;margin-top:5px}.job button{margin-left:auto}.job.failed>span{color:var(--bad)}.job.partial>span{color:var(--warn)}.source-row{display:flex;align-items:center;justify-content:space-between;gap:15px;border:1px solid var(--line);border-radius:12px;padding:14px;margin:12px 0;width:100%;text-align:left}.source-main{display:flex;align-items:center;gap:17px;border:0;padding:5px;text-align:left;min-width:0;flex:1}.source-main span:last-child{min-width:0}.source-main small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:560px;margin-top:7px}.source-main .icon{color:var(--accent-soft)}.source-main strong{overflow-wrap:anywhere}.source-group{border:1px solid var(--line);border-radius:12px;background:var(--bg-surface);margin:10px 0}.source-group.open{padding-bottom:4px}.source-group .source-row{margin:0 10px 8px;width:auto;padding:10px 12px;border-color:var(--line-soft);background:var(--bg-sunken)}.source-group .source-main{background:transparent}button.source-group-head{display:flex;align-items:center;gap:10px;width:100%;padding:13px 16px;border:0;border-radius:12px;background:transparent;text-align:left}button.source-group-head:hover:not(:disabled){background:var(--bg-hover)}.source-group-head small{margin-left:auto;font-size:15px;white-space:nowrap}.source-group-caret{display:inline-block;width:12px;color:var(--text-muted);transition:transform .18s var(--ease)}.source-group.open .source-group-caret{transform:rotate(90deg)}.source-group-tag{padding:1px 7px;border:1px solid var(--line-soft);border-radius:999px;color:var(--text-muted);font-size:15px}fieldset{min-width:0;border:0;border-top:1px solid var(--line);padding:22px 0;margin:30px 0 12px}legend{font-size:15px;padding-right:16px;color:var(--text-dim)}.binding-panel{display:grid;gap:10px;margin-bottom:22px}.binding-row{display:flex;align-items:center;gap:16px;padding:14px 16px;background:var(--bg-surface);border-radius:10px}.binding-main{display:grid;gap:6px;flex:1;min-width:0;margin:0}.binding-label{font-size:15px;color:var(--text-muted)}.binding-value{font-size:15px;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.binding-actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}.binding-inline{display:flex;gap:8px;align-items:center}.binding-inline input{flex:1;min-width:0}.source-choice{flex-direction:row;align-items:center;gap:12px;padding:14px;background:var(--bg-surface);border-radius:9px;margin:8px 0}.source-choice small{display:block;margin-top:3px}.kind-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}.kind{padding:16px 8px}.kind.selected{background:color-mix(in srgb,var(--accent) 12%,var(--bg-surface));border-color:var(--accent-soft);color:var(--text)}.two-col,.three-col{display:grid;gap:18px}.two-col{grid-template-columns:repeat(2,1fr)}.three-col{grid-template-columns:repeat(3,1fr)}.quality-note{display:flex;gap:14px;padding:18px;border-radius:11px;background:var(--bg-surface);margin:20px 0;color:var(--text-dim)}.pdf-import{padding:20px;border:1px solid var(--line);border-radius:12px;margin:20px 0}.source-selection{max-height:360px;overflow:auto}.generation-trace{margin-top:10px;overflow-wrap:anywhere}.generation-trace ol{padding-left:20px}.generation-trace li{margin:12px 0}.generation-trace small{display:block}.pdf-import details{max-height:240px;overflow:auto;overflow-wrap:anywhere;margin-top:12px}.pdf-extracted-text,.source-text.pdf-extracted-text{white-space:pre;overflow:auto;max-width:100%;font:12px/1.6 ui-monospace,Consolas,monospace;tab-size:4}.quality-note p{margin:0;font-size:15px}.quality-note .icon{color:var(--accent-soft)}.wide{width:100%;padding:14px}.warning{color:var(--warn);font-size:15px}.form-footer{display:flex;align-items:center;justify-content:space-between;gap:20px}.file-input{font-size:15px;border:1px dashed var(--line-strong);padding:13px;border-radius:9px}.file-input input{background:transparent;border:0;padding:0;font-size:15px}.draft-card{border:1px solid var(--line);border-radius:12px;padding:18px;margin:16px 0}.draft-card summary{display:flex;align-items:center;gap:13px;cursor:pointer;line-height:1.65}.draft-card summary>span{color:var(--accent-soft);font-size:15px}.draft-card summary small{margin-left:auto;flex-shrink:0}.edit-option{background:var(--bg-surface);border-radius:9px;padding:12px;margin:10px 0}.edit-option input,.edit-option textarea{margin-bottom:8px}.edit-option .inline{flex-direction:row;align-items:center;font-size:15px;margin:0 0 8px}.edit-option .inline input{margin:0}.json-editor{font-family:Consolas,monospace;font-size:15px;height:60vh;tab-size:2}.sticky-actions{position:sticky;top:12px;z-index:5;width:fit-content;max-width:100%;background:var(--bg-glass-strong);backdrop-filter:blur(var(--glass-blur));border:1px solid var(--line-soft);border-radius:var(--radius-sm);box-shadow:var(--shadow-sm);padding:8px;margin-bottom:22px;display:flex;gap:8px;flex-wrap:wrap}.sticky-actions .danger-text{background:transparent;border-color:transparent;color:var(--bad)}.sticky-actions .danger-text:hover:not(:disabled){background:var(--bg-hover)}.draft-title-field{margin:0 0 6px;color:var(--text-muted);font-size:15px}.draft-title-field input{margin-top:8px;font-size:17px;font-weight:600}.draft-page .draft-heading{margin-bottom:18px}.draft-page .draft-heading .eyebrow{margin-bottom:6px}.draft-count{margin:8px 0 18px;color:var(--text-muted);font-size:15px}.draft-count strong{color:var(--text);font-size:17px}.draft-page .sticky-actions{margin:0 0 20px}.draft-generation-details{margin:4px 0 26px;border:1px solid var(--line-soft);border-radius:var(--radius-sm);background:var(--bg-surface);padding:0 16px}.draft-generation-details>summary{cursor:pointer;color:var(--text-dim);font-size:15px;padding:14px 0}.draft-generation-details[open]>summary{border-bottom:1px solid var(--line-soft)}.draft-generation-details>:last-child{margin-bottom:16px}.draft-generation-details .quality-note{display:block;margin:12px 0;overflow-wrap:anywhere}.draft-generation-details ul{overflow-wrap:anywhere}.draft-edit-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:24px 0 10px}.draft-edit-heading h2{display:inline;margin:0 10px 0 0;font-size:18px}.draft-edit-heading span{color:var(--text-muted);font-size:15px}.draft-advanced{position:relative;color:var(--text-muted);font-size:15px}.draft-advanced>summary{cursor:pointer}.draft-advanced button{position:absolute;right:0;top:100%;z-index:2;min-width:110px;margin-top:6px;background:var(--bg-raised);box-shadow:var(--shadow-md)}.danger-text{color:var(--bad)}.citations button{display:block;width:100%;text-align:left;padding:13px;margin-top:12px;font-size:15px;color:var(--text-dim)}.citation-disclosure{margin-top:16px;border-top:1px solid var(--line-soft);color:var(--text-muted);font-size:15px}.citation-disclosure>summary{width:fit-content;padding:12px 0;cursor:pointer}.citation-disclosure>summary span{color:var(--text-faint)}.citations blockquote{color:var(--text-dim);font-size:15px;line-height:1.8;margin:9px 0 0;padding-left:12px;border-left:2px solid var(--line-strong)}.review-heading{display:flex;justify-content:space-between;align-items:flex-start;padding:22px 28px 0;gap:20px}.review-detour{display:block;max-width:100%;margin:14px auto 0;padding:4px 12px;border:1px solid var(--accent-soft);border-radius:999px;background:color-mix(in srgb,var(--accent) 7%,transparent);color:var(--text);font-size:15px;text-align:left;overflow-wrap:anywhere;animation:follow-in .3s var(--ease-out) both}.review-detour:hover:not(:disabled){background:color-mix(in srgb,var(--accent) 14%,transparent)}.review-flow-origin{margin:0 0 4px;font-size:15px;letter-spacing:.04em;color:var(--text-muted)}.review-heading h1{font-size:18px;font-weight:650;margin-bottom:8px;letter-spacing:-.01em}.review-heading .pill{padding:4px 11px;border-color:var(--line);background:transparent;color:var(--text-muted)}.review-heading .pill:hover:not(:disabled){color:var(--text)}.review-heading>button,.review-return{font-size:15px;border-color:transparent;background:transparent;color:var(--text-dim)}.review-return{white-space:nowrap}.review-return-short{display:none}.pill{border-radius:30px;padding:7px 16px;font-size:15px}.question-area{width:min(700px,calc(100% - 48px));margin:34px auto 56px}.question-area:not(.flash-area) .question-card{padding:18px 32px 28px;border-radius:var(--radius-card);background:var(--paper);box-shadow:var(--shadow-card);animation:card-deal .45s var(--ease-out) backwards}.question-meta{display:flex;justify-content:space-between;color:var(--text-muted);font-size:15px;align-items:center;margin:0;padding-bottom:12px}.question-card .question,.question-card .options,.question-card .cloze{animation:ink-in .34s var(--ease-out) backwards}.question-card .options,.question-card .cloze{animation-delay:70ms}.card-progress{height:2px;margin:0 0 24px;background:linear-gradient(var(--accent),var(--accent)) 0 0 / var(--progress, 100%) 100% no-repeat,var(--line);transition:background-size .5s var(--ease-out)}.question-meta>span:first-child{font-variant-numeric:tabular-nums;letter-spacing:.02em}.flash-area .question-card{position:relative}.flash-area .question-meta{position:absolute;z-index:2;top:0;left:0;right:0;padding:14px 36px 0;color:var(--text-muted)}.flash-area .card-progress{position:absolute;z-index:2;top:52px;left:36px;right:36px;margin:0}.question-meta>div{display:flex;align-items:center;gap:9px}.question-meta>div>span{font-size:15px;color:var(--text-muted);max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.question-meta button{padding:4px 9px;border:0}.question{font-family:var(--font-display);font-size:21px;font-weight:600;letter-spacing:-.005em;line-height:1.7;margin:0 0 28px;white-space:pre-wrap}.publication-mark{position:relative;flex-shrink:0;color:var(--text-muted);font-size:15px}.publication-mark>summary{cursor:pointer;white-space:nowrap;list-style:none;border-bottom:1px dotted var(--text-faint)}.publication-mark>summary::-webkit-details-marker{display:none}.publication-mark-popover{position:absolute;top:calc(100% + 10px);right:0;z-index:6;width:min(300px,75vw);padding:12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg-raised);box-shadow:var(--shadow-md);color:var(--text-dim);white-space:normal}.publication-mark-popover p{margin:0 0 10px;line-height:1.5;overflow-wrap:anywhere}.options{display:flex;flex-direction:column;gap:0}.options{border-bottom:1px solid var(--line-soft)}.option{display:flex;gap:14px;align-items:flex-start;text-align:left;border:0;border-top:1px solid var(--line-soft);background:transparent;border-radius:0;padding:15px 10px;font-size:16.5px;line-height:1.6;width:100%;transition:background .15s var(--ease)}.option>div{flex:1;white-space:pre-wrap}.option-letter{transition:background-color .3s var(--ease),box-shadow .3s var(--ease),color .3s var(--ease);transition-delay:calc(var(--reveal-index, 0) * 50ms);display:inline-grid;place-items:center;flex-shrink:0;width:28px;height:28px;margin-top:-1px;border-radius:50%;box-shadow:inset 0 0 0 1px var(--line-strong);color:var(--text-dim);font-size:15px;font-weight:600}.option.selected .option-letter{background:var(--accent);box-shadow:none;color:var(--accent-ink)}.option.correct .option-letter{background:var(--ok);box-shadow:none;color:var(--bg-canvas)}.option.incorrect .option-letter{background:transparent;box-shadow:inset 0 0 0 1.5px var(--bad);color:var(--bad)}.option:disabled{opacity:1}.option:hover:not(:disabled){background:var(--bg-hover)}.option.selected{background:color-mix(in srgb,var(--accent) 7%,transparent)}.option>div>.md:first-child{transition:color .3s var(--ease);transition-delay:calc(var(--reveal-index, 0) * 50ms)}.option.correct>div>.md:first-child{color:var(--ok);font-weight:600}.option-reveal{display:grid;grid-template-rows:1fr;animation:option-reveal .46s var(--ease-out) both;animation-delay:calc(var(--reveal-index, 0) * 50ms)}.option-reveal>div{min-height:0;overflow:hidden;animation:option-ink .46s var(--ease-out) both;animation-delay:calc(var(--reveal-index, 0) * 50ms + 40ms)}.choice-feedback-wrap{display:grid;grid-template-rows:1fr;margin:-12px 0 14px;animation:option-reveal .36s var(--ease-out) both}.choice-feedback-wrap>.choice-feedback{min-height:0;overflow:hidden;margin:0}@media(prefers-reduced-motion:reduce){.option-reveal,.option-reveal>div,.choice-feedback-wrap{animation:none}.option-letter,.option>div>.md:first-child{transition:none}}.option.incorrect>div>.md:first-child{color:var(--bad);text-decoration:line-through;text-decoration-thickness:1px}.option.dim,.option.dim .option-letter{color:var(--text-muted)}.answer-state{display:block;font-size:15px;color:var(--ok);margin:9px 0 5px}.option.incorrect .answer-state{color:var(--bad)}.answer-state:empty{display:none}.choice-feedback{display:flex;flex-wrap:wrap;gap:6px 20px;margin:-12px 0 14px;color:var(--text-muted);font-size:15px}.choice-feedback strong{color:var(--text)}.choice-feedback>span{white-space:nowrap}.choice-feedback .choice-mismatch{color:var(--bad)}.option p{font-size:15px;line-height:1.7;margin:5px 0 0}.question-toolbar{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;margin:14px 0 0;padding:0 8px;gap:8px 16px}.question-toolbar>div{display:flex;flex-wrap:wrap;align-items:center;gap:3px}.question-toolbar .tool-action,.question-toolbar .tool-icon{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:7px 11px;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--text-dim);font-size:15px;line-height:1.2;white-space:nowrap}.question-toolbar .tool-action:hover:not(:disabled),.question-toolbar .tool-icon:hover:not(:disabled),.question-toolbar .tool-action[aria-expanded=true]{background:var(--bg-hover);color:var(--text)}.question-toolbar .tool-action.is-active{background:var(--bg-hover);color:var(--text)}.question-toolbar .thumbs{gap:0}.question-toolbar .thumbs>.tool-icon{width:38px;padding:8px}.question-toolbar .thumbs svg{display:block;width:17px;height:17px}.question-navigation{margin-left:auto}.question-toolbar .question-navigation{gap:7px}.question-toolbar .question-navigation .pill{min-height:38px;padding:8px 12px;white-space:nowrap}.question-toolbar .review-more{position:relative}.question-toolbar .review-more>summary{list-style:none;cursor:pointer}.question-toolbar .review-more>summary::-webkit-details-marker{display:none}.question-toolbar .review-more>summary:focus-visible{outline:2px solid var(--accent-soft);outline-offset:2px}.question-toolbar .review-more>summary:after{content:"\2304";margin-left:5px;color:var(--text-muted);font-size:15px}.question-toolbar .review-more-menu{position:absolute;z-index:20;top:calc(100% + 6px);right:0;scroll-margin-bottom:14px;display:grid;width:158px;padding:5px;border:1px solid var(--line);border-radius:10px;background:var(--bg-raised);box-shadow:var(--shadow-md)}.question-toolbar .review-more-menu button{width:100%;min-height:42px;padding:9px 10px;border:0;background:transparent;text-align:left;font-size:15px}.question-toolbar .review-more-menu button:hover:not(:disabled){background:var(--bg-hover)}.question-toolbar .review-more-menu button:last-child{color:var(--bad)}.en-block{margin-top:10px;padding:9px 13px;border-left:3px solid var(--accent-glow);border-radius:0 10px 10px 0;background:var(--bg-sunken);color:var(--text-dim);font-size:15px}.en-block p{margin:0}.en-tag{display:inline-block;font-size:15px;font-weight:700;letter-spacing:.08em;color:var(--accent-soft);border:1px solid var(--accent-glow);border-radius:6px;padding:0 5px;margin-right:8px;vertical-align:2px}.option .option-en{color:var(--text-muted);font-size:15px;line-height:1.55}.option-explanation.en-line{opacity:.88;margin-top:4px}p.en-block.en-inline-line{margin-top:8px}.pill-on{border-color:var(--accent);color:var(--accent-soft);background:var(--bg-selected)}.hint{background:color-mix(in srgb,var(--warn) 8%,transparent);border-left:2px solid var(--warn);padding:14px 18px;border-radius:0 10px 10px 0;display:flex;gap:14px;margin-bottom:16px}.hint p{margin:0;font-size:15px}.hint .icon{color:var(--warn)}.next-due{font-size:15px;color:var(--ok);margin:17px 0}.next-due.retry{color:var(--text-muted)}.explanation{border-top:1px solid var(--line);padding:22px 0 6px;margin-top:22px}.explanation h3{font-size:16px}.explanation h4{margin:22px 0 6px;font-size:15px;font-weight:500;color:var(--text-muted)}.explanation p{font-size:15.5px;font-weight:400;white-space:pre-wrap}.teaching-panel{margin-top:22px}.teaching-panel>button{width:100%;padding:14px;font-size:15px;color:var(--text-dim);background:transparent;border:1px dashed var(--line-strong)}.teaching-panel>button:hover:not(:disabled){background:var(--bg-hover);border-color:var(--text-faint)}.teaching-panel .explanation{margin-top:0;padding:18px 20px;border:1px solid var(--line);border-radius:12px;background:var(--bg-surface)}.teaching-feedback{margin:0 0 14px;padding:11px 14px;background:color-mix(in srgb,var(--accent) 8%,transparent);border-left:2px solid var(--accent-soft);border-radius:0 6px 6px 0;color:var(--text);font-size:15px;line-height:1.65;white-space:pre-wrap}.submit-answer{display:block;margin:18px 0 0 auto}.flash-area{margin-top:56px}.flashcard{display:block;width:100%;border:0;padding:0;background:transparent;border-radius:36px;perspective:1800px;animation:card-in .32s cubic-bezier(.2,.8,.2,1)}.flashcard:hover:not(:disabled),.flashcard:disabled{background:transparent;border:0;opacity:1}.flashcard:focus-visible{outline-offset:6px}.flip-inner{display:grid;transform-style:preserve-3d;transition:transform .6s cubic-bezier(.3,.75,.2,1),height .5s cubic-bezier(.3,.75,.2,1)}.flip-inner>.flip-face{align-self:start}.flip-face[aria-hidden=true]{pointer-events:none;visibility:hidden}.smooth-height{transition:height .32s var(--ease);overflow:clip;overflow-clip-margin:12px}.smooth-height-inner{display:flow-root}.flash-follow .grading,.flash-follow .response-label{animation:follow-in .3s var(--ease) both}.flashcard.flipped .flip-inner{transform:rotateY(180deg)}.flip-face{position:relative;grid-area:1 / 1;min-height:400px;padding:76px 36px 28px;border:0;border-radius:var(--radius-card);background:var(--paper);box-shadow:var(--shadow-card);display:flex;flex-direction:column;align-items:center;justify-content:center;backface-visibility:hidden;-webkit-backface-visibility:hidden;transition:translate .2s}.flip-back{transform:rotateY(180deg)}@container study (max-width: 720px){.question-area:not(.flash-area) .question-card{padding:14px 18px 22px}.flash-area .question-meta{padding:12px 22px 0}.flash-area .card-progress{left:22px;right:22px}}.flash-prompt{font-family:var(--font-display);font-size:27px;font-weight:500;letter-spacing:-.01em;line-height:1.55;text-align:left;width:100%;margin:auto 0}.flash-prompt.long,.flip-back .flash-prompt.long{font-size:18px;line-height:1.75}.md,.md p,.md li{white-space:normal}.md{min-width:0;overflow-wrap:anywhere}.md>:first-child{margin-top:0}.md>:last-child{margin-bottom:0}.md p{margin:0 0 .7em;line-height:inherit}.md ul,.md ol{margin:.2em 0 .8em;padding-left:1.4em}.md li{margin:.25em 0}.md li>ul,.md li>ol{margin:.2em 0}.md li::marker{color:var(--accent-soft)}.md strong{font-weight:620;color:var(--text)}.md em{font-style:italic}.md del{color:var(--text-muted)}.md code{font-family:JetBrains Mono,Consolas,monospace;font-size:1em;padding:.1em .38em;border-radius:5px;background:var(--bg-sunken);border:1px solid var(--line)}.md .md-code{margin:.4em 0 .9em;padding:12px 14px;border-radius:9px;background:var(--bg-sunken);border:1px solid var(--line);overflow-x:auto;font-size:15px;line-height:1.6;white-space:pre}.md .md-code code{padding:0;border:0;background:transparent;font-size:inherit}.md blockquote{margin:.4em 0 .9em;padding:2px 0 2px 12px;border-left:3px solid color-mix(in srgb,var(--accent) 55%,transparent);color:var(--text-dim)}.md .md-heading{margin:.9em 0 .4em;font-size:1.05em;font-weight:620;line-height:1.5}.md hr{border:0;border-top:1px solid var(--line);margin:1em 0}.md a,.md .md-link{color:var(--accent-soft);text-decoration:underline;text-underline-offset:3px}.md .md-link{text-decoration-style:dotted}.md-table{margin:.4em 0 .9em;overflow-x:auto}.md table{border-collapse:collapse;font-size:1em;min-width:100%}.md th,.md td{border:1px solid var(--line);padding:6px 10px;text-align:left;vertical-align:top}.md th{background:var(--bg-surface);font-weight:600}.md .md-color strong,.md .md-color em,.md .md-color code{color:inherit}.resume-nav .nav-label{display:grid;min-width:0;text-align:left}.resume-nav .nav-label small{font-size:15px;color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:150px}.nav.muted-nav{opacity:.45}.ingest-banner{background:color-mix(in srgb,var(--accent) 10%,var(--bg-surface));color:var(--text);border:1px solid color-mix(in srgb,var(--accent) 35%,transparent)}.ingest-banner span{display:grid;gap:2px}.ingest-banner small{color:var(--accent-soft)}.source-mode{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,190px),1fr));gap:10px;margin:18px 0 8px}.source-tab{display:grid;gap:4px;text-align:left;padding:14px 16px;border-radius:12px}.source-tab small{font-size:15px;color:var(--text-muted)}.source-tab.active{background:color-mix(in srgb,var(--accent) 12%,var(--bg-surface));border-color:var(--accent-soft)}.choice-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(96px,1fr));gap:8px;margin-bottom:8px}.review-heading-actions{display:flex;align-items:center;gap:6px}.prereq-strip{margin:0 12px 18px;border:1px solid var(--line);border-radius:11px;background:color-mix(in srgb,var(--accent) 6%,var(--bg-surface));font-size:15px}.flash-area .prereq-strip{margin:16px 12px 0}.prereq-strip>summary{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 10px 8px 14px;cursor:pointer;color:var(--text-dim)}.prereq-strip>summary .pill{flex:none;padding:5px 12px;font-size:15px;white-space:nowrap}.prereq-strip ul{list-style:none;margin:0;padding:2px 14px 10px;display:grid;gap:6px}.prereq-strip li{display:flex;align-items:baseline;gap:8px;color:var(--text-dim)}.prereq-strip li .map-dot{position:relative;top:-1px}.prereq-item{display:flex;align-items:baseline;gap:8px;width:100%;padding:6px 8px;border:0;border-radius:8px;text-align:left;color:inherit;background:transparent}.prereq-item:hover:not(:disabled){background:var(--bg-hover)}.prereq-item .md{flex:1}.prereq-go{color:var(--accent-soft);opacity:0;transition:opacity .15s}.prereq-item:hover .prereq-go,.prereq-item:focus-visible .prereq-go{opacity:1}.md details.md-details{margin:.5em 0 .9em;border:1px solid var(--line);border-radius:9px;background:var(--bg-surface);padding:0 12px}.md details.md-details>summary{cursor:pointer;padding:9px 0;color:var(--text-dim);list-style-position:inside}.md details.md-details[open]>summary{border-bottom:1px solid var(--line);margin-bottom:10px}.md details.md-details[open]{padding-bottom:10px}.md-compact p{margin-bottom:.3em}.md-title{font-size:17px;font-weight:550;margin:6px 0 10px}.source-view-toggle{display:flex;gap:6px;margin:4px 0 10px}.source-md{white-space:normal;line-height:1.8}.flip-back .flash-prompt{font-size:23px;color:var(--text)}.flip-question{align-self:stretch;text-align:left;font-size:15px;line-height:1.6;color:var(--text-muted);padding-bottom:14px;border-bottom:1px solid var(--line);max-height:4.8em;overflow:hidden;mask-image:linear-gradient(#000 70%,transparent);margin-bottom:18px}.flip-question p,.flip-question ul,.flip-question ol{margin:0}.flip-loading{display:block;height:14px;width:60%;border-radius:7px;background:linear-gradient(90deg,var(--line),var(--line-strong),var(--line));background-size:200% 100%;animation:shimmer 1.1s linear infinite}@media(prefers-reduced-motion:reduce){.flashcard{animation:none}.flip-inner,.flashcard.flipped .flip-inner,.flip-back,.smooth-height{transform:none;transition:none}.flash-follow .grading,.flash-follow .response-label{animation:none}.flip-face{transition:opacity .2s}.flip-back,.flashcard.flipped .flip-front{opacity:0;visibility:hidden}.flashcard.flipped .flip-back{opacity:1;visibility:visible}}.flip-label{font-size:15px;color:var(--text-faint);margin-top:45px}.grading{margin-top:24px;container:grading / inline-size}.grading-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:10px;color:var(--text-dim);font-size:15px}.grading-head small{color:var(--text-dim);font-size:15px}.grade-scale{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:4px}.grade{min-width:0;min-height:74px;padding:10px 3px 8px;border:0;border-radius:12px;background:transparent;text-align:center}.grade:hover:not(:disabled),.grade:focus-visible{background:var(--bg-hover)}.grade:focus-visible{outline-offset:-3px}.grade:active:not(:disabled){background:var(--bg-selected)}.grade.low{color:var(--bad)}.grade.high{color:var(--ok)}.grade:nth-child(4){color:var(--warn)}.grade strong{display:block;font-family:var(--font-display);font-size:30px;font-weight:300;line-height:1;margin-bottom:8px;font-variant-numeric:tabular-nums}.grade span{display:block;color:var(--text-dim);font-size:15px;line-height:1.4;white-space:normal;overflow-wrap:anywhere}@container grading (max-width: 640px){.grade-scale{grid-template-columns:repeat(3,minmax(0,1fr))}}.response-label{font-size:15px;color:var(--text-dim)}.session-summary{max-width:568px;margin:90px auto;text-align:center;padding:0 24px}.summary-symbol{width:66px;height:66px;border:1px solid var(--ok);color:var(--ok);border-radius:50%;font-size:30px;display:grid;place-items:center;margin:0 auto 25px}.session-summary h1{font-size:32px}.session-summary>p{color:var(--text-dim)}.summary-topics{background:var(--bg-surface);border-radius:14px;padding:23px;margin:30px 0;text-align:left}.summary-topics h3{font-size:15px}.summary-topics .tag{margin:0 6px 6px 0}.modal-backdrop{position:fixed;inset:0;background:#0009;backdrop-filter:blur(5px);z-index:30;display:flex;align-items:center;justify-content:center;padding:24px;animation:backdrop-in .18s ease}.modal{max-width:700px;width:100%;max-height:90vh;overflow:auto;border:1px solid var(--line-strong);background:var(--bg-raised);box-shadow:0 25px 90px #0008;border-radius:18px;padding:26px;animation:modal-in .2s ease}.modal-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:20px}.modal-heading h2{margin:0}.modal-heading button{font-size:22px;padding:3px 10px;border:0}.source-text{font-family:inherit;font-size:15px;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere;color:var(--text-dim)}.highlight-quote{font-size:15px;line-height:1.9;margin:0 0 24px;border-left:3px solid var(--accent-soft);padding:16px;background:color-mix(in srgb,var(--accent) 10%,var(--bg-surface))}.alert{margin:15px 25px 0;padding:11px 16px;border-radius:8px;display:flex;justify-content:space-between;gap:16px;font-size:15px;line-height:1.65;white-space:pre-wrap}.alert button{border:0;padding:0 5px}.alert span{flex:1}.alert .alert-action{padding:0 10px;color:inherit;font-weight:600;text-decoration:underline;text-underline-offset:3px}.error{background:color-mix(in srgb,var(--bad) 14%,var(--bg-surface));color:var(--bad)}.notice{background:color-mix(in srgb,var(--ok) 14%,var(--bg-surface));color:var(--text)}.onboarding{max-width:680px;padding:70px 30px;margin:auto}.onboarding h1{font-size:34px}.intro{color:var(--text-dim);margin:20px 0 35px}.loading{padding:80px;color:var(--text-dim)}.small{font-size:15px}&::-webkit-scrollbar{width:10px;height:10px}&::-webkit-scrollbar-track{background:transparent}&::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:6px;border:2px solid transparent;background-clip:padding-box}&::-webkit-scrollbar-thumb:hover{background:var(--text-faint)}scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent;.lv-new{background:color-mix(in srgb,var(--text) 22%,transparent)}.lv-weak{background:var(--bad)}.lv-learning{background:var(--warn)}.lv-familiar{background:color-mix(in srgb,var(--ok) 42%,transparent)}.lv-mastered{background:var(--ok)}.desk{display:grid;grid-template-columns:minmax(0,1fr) minmax(270px,340px);align-items:start;gap:36px 72px;padding:34px 0 52px;margin-bottom:40px;border-bottom:1px solid var(--line-soft)}.desk-intro{min-width:0}.focus-switch{display:flex;width:fit-content;gap:2px;padding:3px;border-radius:999px;background:color-mix(in srgb,var(--text) 6%,transparent)}.focus-switch button{border:0;border-radius:999px;background:transparent;padding:5px 13px;font-size:15px;color:var(--text-muted)}.focus-switch button:hover:not(:disabled){background:transparent;color:var(--text)}.focus-switch button.active{background:var(--bg-raised);color:var(--text);box-shadow:var(--shadow-sm)}.course-heading{position:relative;display:inline-flex;align-items:baseline;gap:12px;max-width:100%;margin:22px 0 34px;font-size:clamp(26px,3.2cqi,36px);font-weight:700;letter-spacing:-.025em;line-height:1.15}.course-heading>span:first-child{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.course-caret{font-size:.42em;color:var(--text-faint);transform:translateY(-.2em);transition:color .15s var(--ease)}.course-heading:hover .course-caret{color:var(--text)}.course-heading select{position:absolute;inset:0;width:100%;height:100%;padding:0;opacity:0;cursor:pointer;font-size:17px}.course-heading:has(select:focus-visible){outline:2px solid var(--accent-soft);outline-offset:6px;border-radius:6px}.course-heading-input{display:block;margin:22px 0 30px;padding:4px 0 8px;max-width:520px;border:0;border-bottom:1px dashed var(--line-strong);border-radius:0;background:transparent;font-family:var(--font-display);font-size:clamp(26px,3.6cqi,38px);font-weight:700;letter-spacing:-.02em}.course-heading-input:focus{background:transparent;box-shadow:none;border-bottom-color:var(--accent-soft)}.desk-mastery{display:grid;grid-template-columns:auto 1fr;align-items:end;column-gap:12px;row-gap:12px;max-width:440px}.desk-mastery-value{font-family:var(--font-display);font-size:46px;font-weight:300;line-height:.9;letter-spacing:-.04em;font-variant-numeric:tabular-nums}.desk-mastery-value small{margin-left:2px;font-size:.4em;font-weight:400;letter-spacing:0;color:var(--text-muted)}.desk-mastery-label{padding-bottom:4px;font-size:15px;color:var(--text-muted)}.desk-mastery .mastery{grid-column:1 / -1;width:100%;margin:0}.desk-mastery .mastery-value{display:none}.desk-mastery .mastery-bar{height:5px}.desk-mastery-all{grid-column:1 / -1;margin-top:-4px;font-size:15px;color:var(--text-muted)}.desk-mastery-all strong{font-weight:600;color:var(--text-dim);font-variant-numeric:tabular-nums}.desk-next{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px;margin:30px 0 0;font-size:15px;line-height:1.6;color:var(--text-dim)}.desk-next-label{font-size:15px;color:var(--text-faint)}.desk-next-topic strong{color:var(--text);font-weight:600}.desk-next-topic small{color:var(--text-muted);font-size:15px}.desk-also{display:flex;flex-wrap:wrap;gap:6px 20px;margin:12px 0 0}button.link-btn{padding:0;border:0;border-radius:0;background:transparent;color:var(--text-dim);font-size:15px;text-decoration:underline;text-decoration-color:var(--line-strong);text-underline-offset:5px;transition:color .15s var(--ease),text-decoration-color .15s var(--ease)}button.link-btn:hover:not(:disabled){background:transparent;color:var(--text);text-decoration-color:var(--accent-soft)}.today-stack{position:relative;justify-self:end;width:100%;max-width:340px;isolation:isolate}.today-stack:before,.today-stack:after{content:"";position:absolute;inset:0;z-index:-1;border-radius:var(--radius-card);background:color-mix(in srgb,var(--paper) 82%,var(--bg-canvas));box-shadow:var(--shadow-md);transition:transform .5s var(--ease-out);animation:stack-in .6s var(--ease-out) .12s backwards}.today-stack:before{background:color-mix(in srgb,var(--paper) 64%,var(--bg-canvas));transform:translate(12px,11px) rotate(3.6deg)}.today-stack:after{transform:translate(6px,5px) rotate(1.6deg)}.today-stack[data-depth="0"]:before,.today-stack[data-depth="0"]:after,.today-stack[data-depth="1"]:before{display:none}.today-stack:hover:before{transform:translate(20px,12px) rotate(6.5deg)}.today-stack:hover:after{transform:translate(11px,6px) rotate(3.2deg)}.today-card{position:relative;display:flex;flex-direction:column;min-height:330px;padding:18px 24px 24px;border-radius:var(--radius-card);color:var(--paper-ink);background:repeating-linear-gradient(to bottom,transparent 0 31px,var(--paper-rule) 31px 32px) 0 52px / 100% calc(100% - 52px) no-repeat,var(--paper);box-shadow:var(--shadow-card);transition:transform .5s var(--ease-out);animation:card-deal .55s var(--ease-out) backwards}.today-stack:hover .today-card{transform:translateY(-4px) rotate(-.6deg)}.today-card-head{display:flex;justify-content:space-between;gap:12px;padding-bottom:11px;border-bottom:2px solid var(--accent);font-size:15px;font-weight:500;color:var(--paper-dim)}.today-card-head time{font-variant-numeric:tabular-nums}.today-count{display:flex;align-items:baseline;gap:10px;margin:28px 0 8px}.today-count strong{font-family:var(--font-display);font-size:124px;font-weight:250;line-height:.82;letter-spacing:-.06em;font-variant-numeric:tabular-nums}.today-count span{font-size:16px;font-weight:600;color:var(--paper-dim)}.today-detail{margin:0 0 22px;font-size:15px;line-height:1.6;color:var(--paper-dim)}.today-card-empty{margin:30px 0 18px;font-family:var(--font-display);font-size:22px;font-weight:650;line-height:1.55;color:var(--paper-ink)}.today-card .today-go{display:flex;justify-content:space-between;align-items:center;width:100%;margin-top:auto;padding:13px 18px;border-radius:10px;font-size:16px}.today-go span{transition:transform .2s var(--ease-out)}.today-go:hover:not(:disabled) span{transform:translate(4px)}.today-card .today-go:disabled{background:color-mix(in srgb,var(--paper-ink) 7%,transparent)!important;color:var(--paper-dim)!important}@container study (max-width: 760px){.desk{grid-template-columns:minmax(0,1fr);padding-top:18px;gap:0}.desk-intro{display:contents}.focus-switch{order:0;justify-self:start}.course-heading,.course-heading-input{order:1;margin-bottom:22px}.role-prep{order:2}.today-stack{order:3;justify-self:stretch;max-width:none;margin:0 14px 34px 0}.desk-mastery{order:4}.desk-next{order:5}.desk-also{order:6}.today-card{min-height:0}.today-count{margin-top:22px}.today-count strong{font-size:84px}}.desk .resume-list{max-width:460px;margin:26px 0 0;border-top:1px solid var(--line-soft)}.desk .resume{padding:10px 4px}.desk .resume-list>summary{padding:10px 0;list-style:none;cursor:pointer;font-size:15px;color:var(--text-muted)}.desk .resume-list>summary::-webkit-details-marker{display:none}.desk .resume-list>summary:before{content:"\25b8   ";color:var(--text-faint)}.desk .resume-list[open]>summary:before{content:"\25be   "}.desk .resume-list>summary:hover{color:var(--text)}.map-heading{margin-top:0;margin-bottom:14px}.map-heading h2{font-size:21px}.catalog-menu-toggle{min-width:0}.map-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-bottom:22px}.map-tools{display:flex;gap:8px;align-items:center;flex:1 1 240px;min-width:0;max-width:460px;margin:0}.map-tools input{padding:8px 12px;min-width:0;background:var(--bg-sunken);color:var(--text)}.chip{border-radius:999px;padding:6px 12px;font-size:15px;white-space:nowrap;color:var(--text-muted);border-color:var(--line);background:transparent;flex-shrink:0}.chip.active{background:var(--bg-raised);border-color:var(--line-strong);color:var(--text)}.map-legend{display:flex;flex-wrap:wrap;gap:6px 14px;margin:0 0 0 auto;padding:0;font-size:15px;color:var(--text-faint)}.map-legend span{display:inline-flex;align-items:center;gap:6px}.map-legend i{width:8px;height:8px;border-radius:50%;display:inline-block}.map-tree,.map-topics,.map-children{list-style:none;margin:0;padding:0}.map-tree{display:grid;gap:30px}.map-deck,.map-folder{border:0;border-radius:0;background:transparent;overflow:visible}.map-children{display:grid}.map-row{display:flex;align-items:center;gap:12px;padding:10px;min-height:48px;border-radius:var(--radius-sm);transition:background .15s var(--ease)}.folder-row{padding:0 10px 12px;border-bottom:1px solid var(--line);border-radius:0}.folder-row .map-name strong{font-family:var(--font-display);font-size:18px;font-weight:650;letter-spacing:-.01em}.map-folder-icon{display:none}.folder-row>.mastery{margin-right:114px}.deck-row{padding:14px 10px;min-height:60px}.map-deck{border-bottom:1px solid var(--line-soft)}.map-deck>.map-row:hover,.topic-row:hover{background:var(--bg-hover)}.deck-row .map-name strong{font-size:16px;font-weight:600}.map-row.selected,.map-deck>.map-row.selected{background:color-mix(in srgb,var(--accent) 9%,transparent);box-shadow:inset 2px 0 0 var(--accent)}.map-row input[type=checkbox]{flex-shrink:0;margin:0}.map-row>.map-dot{display:none}@media(hover:hover){.map-tree:not(:has(input:checked)) .map-row:not(:hover):not(:focus-within)>input[type=checkbox]{opacity:0}}.map-tree.single-course>.map-folder>.folder-row{display:none}.map-caret{border:0;padding:2px 4px;width:22px;background:transparent;color:var(--text-faint);flex-shrink:0}.map-caret:hover:not(:disabled){background:transparent;color:var(--text)}.map-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.map-dot.lv-new{background:transparent;border:1.5px solid var(--text-faint)}.map-name{display:flex;flex-direction:column;align-items:flex-start;gap:3px;min-width:0;flex:1 1 auto;border:0;padding:0;text-align:left;background:transparent}@container study (min-width:721px){.map-row>.map-name{max-width:46%}}button.map-name:hover:not(:disabled){background:transparent}.map-name strong,.map-name>span{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.map-name strong{font-size:15px}.map-name small{font-size:15px;font-weight:500;line-height:1.5;color:var(--text-dim)}.folder-row .map-name{gap:4px}.mastery{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;width:150px;margin-left:auto}.mastery-bar{display:flex;flex:1;height:4px;gap:2px;border-radius:4px;overflow:hidden;background:color-mix(in srgb,var(--text) 9%,transparent);position:relative}.mastery-bar span{flex-basis:0;min-width:2px}.mastery-bar{transform-origin:left center;animation:bar-in .6s var(--ease-out) backwards}.mastery-bar.empty{background:repeating-linear-gradient(135deg,color-mix(in srgb,var(--text) 9%,transparent) 0 3px,transparent 3px 6px)}.mastery-value{width:36px;text-align:right;font-size:15px;font-variant-numeric:tabular-nums;color:var(--text-dim);flex-shrink:0}.mastery-value.zero{color:var(--text-faint)}.map-play,.map-ask,.map-menu-toggle{flex-shrink:0;padding:6px 10px;font-size:15px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center}.map-play{width:56px;min-width:56px;padding:0;height:32px;color:var(--text-dim);border:1px solid var(--line);background:transparent;font-weight:500;transition:background .15s var(--ease),color .15s var(--ease),border-color .15s var(--ease)}.map-play:hover:not(:disabled){background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}@media(hover:hover){.map-play:not(.is-run){opacity:0;transition:opacity .15s var(--ease),background .15s var(--ease),color .15s var(--ease)}.map-row:hover .map-play,.map-row:focus-within .map-play{opacity:1}}.map-ask,.map-menu-toggle{border-color:transparent;background:transparent;color:var(--text-muted);min-width:34px}.map-row .map-menu-toggle{width:34px;padding-inline:0}.map-ask:hover:not(:disabled),.map-menu-toggle:hover:not(:disabled){background:var(--bg-hover);border-color:transparent;color:var(--text)}.map-topics{padding:2px 0 10px 34px}.topic-row{min-height:42px;padding:7px 10px 7px 8px}.map-menu-wrap{position:relative;flex-shrink:0}.map-deck.menu-open,.map-folder.menu-open{position:relative;z-index:30}.map-menu{position:absolute;right:0;top:calc(100% + 6px);z-index:40;min-width:168px;display:grid;padding:5px;border:1px solid var(--line);border-radius:10px;background:var(--bg-raised);box-shadow:var(--shadow-lg);animation:rise-in .18s var(--ease-out)}.map-menu button{border:0;border-radius:6px;background:transparent;text-align:left;padding:8px 10px;font-size:15px;white-space:nowrap}.map-menu button:hover:not(:disabled){background:var(--bg-hover)}.map-empty{padding:20px 4px}.selection-bar{position:sticky;bottom:14px;z-index:15;display:flex;align-items:center;gap:10px;margin:18px 0;padding:10px 12px 10px 18px;border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--bg-raised);box-shadow:var(--shadow-lg)}.selection-bar span{margin-right:auto;font-size:15px}.summary-actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.folder-form{margin:14px 0 20px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.guide{border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--bg-surface)}.guide-sidebar{margin:0 0 4px;overflow:hidden;border-color:transparent;border-radius:0;background:transparent}.guide-sidebar .guide-toggle{padding:8px 12px;border-radius:var(--radius-sm);background:transparent}.guide-sidebar .guide-toggle:hover:not(:disabled){background:transparent;color:var(--text)}.guide-inline{display:none;margin-bottom:14px}.sidebar{overflow-y:auto}.guide-toggle{display:flex;align-items:center;gap:10px;width:100%;border:0;border-radius:12px;padding:11px 12px;text-align:left}.guide-icon{display:inline-grid;place-items:center;width:22px;height:22px;flex-shrink:0;border-radius:50%;background:transparent;box-shadow:inset 0 0 0 1px var(--line-strong);color:var(--text-muted);font-size:15px;font-weight:700}.guide-heading{display:grid;gap:2px;min-width:0;flex:1}.guide-heading strong{font-size:15px}.guide-heading small{font-size:15px;line-height:1.4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.guide-caret{color:var(--text-muted)}.guide-body{padding:0 12px 12px}.guide-goal{margin:2px 0 12px;gap:6px;font-size:15px}.guide-goal input{padding:8px 10px;font-size:15px}.guide-goal small{font-size:15px}.guide-steps{list-style:none;margin:0;padding:0;display:grid;gap:2px}.guide-step{display:flex;gap:10px;padding:8px 6px;border-radius:9px}.guide-step.current{background:color-mix(in srgb,var(--accent) 8%,var(--bg-surface))}.guide-step strong{font-size:15px}.guide-step p{margin:3px 0 0;font-size:15px;line-height:1.6;color:var(--text-muted)}.guide-step.done strong,.guide-step.done p{color:var(--text-faint)}.guide-marker{display:inline-grid;place-items:center;width:20px;height:20px;flex-shrink:0;margin-top:1px;border-radius:50%;border:1px solid var(--line-strong);font-size:15px;color:var(--text-dim)}.guide-step.current .guide-marker{border-color:var(--accent-soft);color:var(--text)}.guide-step.done .guide-marker{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 20%,transparent);color:var(--ok)}.guide-actions{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.guide-actions button{padding:5px 10px;font-size:15px;border-radius:8px}.guide-foot{margin:10px 0 0;font-size:15px;line-height:1.5;color:var(--text-faint)}@container study (min-width:1400px){.flash-area{margin-top:145px}.flip-face{min-height:480px}.question-area{margin-top:58px}.question-area.flash-area{margin-top:130px}}@container study (max-width:1050px){.sidebar{width:190px;padding-left:10px;padding-right:10px}.brand{font-size:15px;gap:7px}.brand small{font-size:15px}main{min-width:0}.page{padding:35px 25px}.page-heading{align-items:flex-start}h1{font-size:24px}.flash-area{margin-top:70px}.flip-face{min-height:380px}.flash-prompt{font-size:25px}}@container study (max-width:720px){.map-tools{flex:1 1 100%}.map-legend{gap:5px 10px;font-size:15px;margin-left:0}.map-topics{padding:0 0 8px 12px}.map-row{flex-wrap:wrap;gap:4px 8px;padding:10px;align-items:center}.map-row>.map-name{flex:1 1 0;max-width:none;order:1;min-width:0}.map-row .map-play{order:2}.map-row .map-menu-wrap{order:3}.folder-row>.mastery{margin-right:0}.map-row .mastery{order:10;flex:1 0 100%;width:auto;margin:2px 0 0;padding-left:27px}.map-row .mastery-bar{flex:1;width:auto}.map-caret{order:0}.map-row>input[type=checkbox]{order:0}.map-row>.map-dot{order:1}.map-folder-icon,.map-ask{display:none}.map-play,.map-menu-toggle{padding:5px 10px}.map-play{width:56px;min-width:56px}.map-menu{min-width:180px}.binding-row,.binding-inline{flex-wrap:wrap}.binding-actions{justify-content:flex-start}main{min-width:0}.topbar{padding:0 16px}.breadcrumb{margin:0 7px}.page{padding:30px 19px}.page-heading{display:block}.page-heading>button{margin-top:17px}.eyebrow{font-size:15px}.page h1{font-size:23px}.stats>div{padding:0 15px}.stats strong{font-size:25px}.stats span{font-size:15px}.deck-grid{grid-template-columns:1fr}.section-heading{align-items:flex-start}.section-heading button{font-size:15px}.two-col,.three-col{grid-template-columns:1fr;gap:0}.kind-grid{grid-template-columns:repeat(2,1fr)}.review-heading{padding:21px 17px 0}.review-heading h1{font-size:20px}.review-heading>button{font-size:15px;padding:5px 0;white-space:nowrap}.review-return-full{display:none}.review-return-short{display:inline}.question-area{width:calc(100% - 30px);margin-top:34px}.question{font-size:17px;margin-left:4px;margin-right:4px}.question-meta{margin-left:4px;margin-right:4px}.question-meta>div>span{max-width:130px}.option{font-size:15px;padding:14px 12px;gap:9px}.option p{font-size:15px}.flash-area{margin-top:22px}.flashcard,.flip-face{border-radius:var(--radius-card)}.flip-face{min-height:280px;padding:72px 22px 22px}.flash-prompt{font-size:23px}.flip-back .flash-prompt{font-size:21px}.grade-scale{grid-template-columns:repeat(3,minmax(0,1fr))}.grade strong{font-size:24px}.question-toolbar .question-navigation{width:100%;justify-content:flex-end}.question-toolbar .tool-action,.question-toolbar .tool-icon,.question-toolbar .question-navigation .pill{min-height:44px}.question-toolbar .pill{padding:7px 11px;font-size:15px}.modal-backdrop{padding:12px}.modal{padding:20px}.alert{margin:12px 15px 0}.source-row{padding:10px}.source-main small{max-width:180px}.source-main .icon{display:none}.onboarding{padding:40px 20px}.onboarding h1{font-size:27px}.form-footer{align-items:flex-end}.session-summary{margin-top:60px}.sticky-actions button{font-size:15px}.resume{padding:15px}.resume strong{font-size:15px}}.glass,.deck,.modal{background:var(--bg-surface);border:1px solid var(--line)}.modal{box-shadow:var(--shadow-lg)}.sidebar,main{z-index:1}main{position:relative}.primary{background:var(--accent)!important;border-color:var(--accent)!important;color:var(--accent-ink)!important;box-shadow:0 8px 20px -12px var(--accent-glow),inset 0 1px #ffffff24;transition:transform .16s var(--ease),box-shadow .16s var(--ease),background .16s var(--ease)}.primary:hover:not(:disabled){background:var(--accent-soft)!important;transform:translateY(-1px);box-shadow:0 12px 28px -10px var(--accent-glow),inset 0 1px #ffffff38}.primary:active:not(:disabled){transform:translateY(0);box-shadow:0 4px 12px -8px var(--accent-glow)}.primary:disabled{background:color-mix(in srgb,var(--text) 7%,transparent)!important;border-color:transparent!important;color:var(--text-faint)!important;box-shadow:none;opacity:1}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--accent-soft);outline-offset:2px;box-shadow:var(--ring)}.deck:hover{border-color:var(--line-strong)}@media(prefers-reduced-motion:reduce){&:before,.today-card,.today-stack:before,.today-stack:after,.question-card,.mastery-bar,.question-card .question,.question-card .options,.question-card .cloze,:is(.page,.review-page)>*,.nav-mark,.map-menu{animation:none!important}*{transition-duration:.01ms!important}}.nb-dir{margin-top:48px}.nb-dir .map-heading h2{display:flex;align-items:center;gap:6px}.nb-dir .map-caret{width:auto;margin:0;padding:0 2px 0 0;font-size:15px}.nb-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.nb-row{display:flex;align-items:center;gap:14px;width:100%;text-align:left;border:1px solid var(--line-soft);border-radius:var(--radius-sm);background:var(--bg-surface);color:var(--text);padding:12px 16px;cursor:pointer;transition:border-color var(--ease),background var(--ease)}.nb-row:hover:not(:disabled){border-color:var(--line-strong);background:var(--bg-hover)}.nb-row:disabled{cursor:default;color:var(--text-muted)}.nb-row.missing{opacity:.55}li.nb-row.current{cursor:default;background:var(--bg-sunken)}.nb-chip{flex:none;font-size:15px;color:var(--accent-soft);border:1px solid var(--line);border-radius:999px;padding:2px 9px;white-space:nowrap}.nb-main{flex:1;min-width:0}.nb-main strong{font-size:15px;font-weight:500}.nb-main small{display:block;margin-top:3px;color:var(--text-muted);font-size:15px}.nb-path{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nb-stats{flex:none;font-size:15px;color:var(--text-dim);white-space:nowrap}.nb-go{flex:none;color:var(--accent-soft)}.nb-empty{font-size:15px;margin:4px 0 0}.nb-due{margin-bottom:14px}.nb-due .eyebrow{margin-bottom:8px}.nb-row.due{border-left:3px solid var(--warn)}.nb-search{display:flex;gap:8px;margin:10px 0 14px}.nb-search input{flex:1}.nb-results{margin-bottom:14px}.nb-results .nb-row{background:var(--bg-sunken)}.source-hit{background:var(--accent-glow);color:inherit;border-radius:3px;padding:1px 0;box-shadow:0 0 0 2px var(--accent-glow)}.review-page.has-rail{display:grid;grid-template-columns:36px minmax(0,1fr);column-gap:12px;padding-left:14px;align-items:start}.review-page.has-rail>:not(.review-navigator){grid-column:2}.review-page.has-rail>.review-heading{padding-left:0}.review-body{display:grid;grid-template-columns:minmax(0,1fr);align-items:start}.review-body>.question-area{grid-column:1;grid-row:1;min-width:0}.review-navigator{grid-column:1;grid-row:1 / span 20;position:sticky;top:72px;max-height:min(680px,calc(100dvh - 200px));min-height:80px;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:none;padding:8px 0}.review-navigator::-webkit-scrollbar{display:none}.review-tick{display:flex;align-items:center;justify-content:center;width:36px;height:16px;min-height:16px;padding:0;border:0;border-radius:3px;background:transparent;box-shadow:none}.review-tick .review-tick-line{width:9px;height:0;border-top:2px solid var(--tick, var(--line-strong));border-radius:0;background:none;transition:width .18s ease,border-color .25s ease}.review-tick .lv-new{--tick: color-mix(in srgb, var(--text) 34%, transparent)}.review-tick .lv-weak{--tick: var(--bad)}.review-tick .lv-learning{--tick: var(--warn)}.review-tick .lv-familiar{--tick: color-mix(in srgb, var(--ok) 62%, transparent)}.review-tick .lv-mastered{--tick: var(--ok)}.review-tick:hover:not(:disabled){background:var(--accent-glow)}.review-tick:hover .review-tick-line{width:15px}.review-tick[aria-current=step] .review-tick-line{width:22px}.review-tick:focus-visible{outline:2px solid var(--text);outline-offset:-2px}@container study (max-width: 600px){.review-page.has-rail{grid-template-columns:28px minmax(0,1fr);column-gap:4px;padding-left:6px;padding-right:12px}.review-tick{width:28px;height:24px}.review-body>.question-area{width:100%;min-width:0}}@media(prefers-reduced-motion:reduce){.review-tick-line{transition:none}}font-family:var(--font-ui);color:var(--text);background:transparent;font-synthesis:none;font-size:15px;height:100%;min-height:100%;display:flex;overflow:auto;scrollbar-gutter:stable;position:relative;container-type:inline-size;isolation:isolate;container-name:study;background-color:var(--bg-canvas)}.explanation-followup{margin-top:20px}.followup-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding-bottom:8px;font-size:15px;color:var(--text-muted)}.followup-item{border-top:1px solid var(--line);padding:14px 0;overflow-wrap:anywhere}.followup-item>summary{display:flex;align-items:baseline;gap:10px;cursor:pointer;list-style:none}.followup-item>summary::-webkit-details-marker{display:none}.followup-item>summary:after{content:"\5c55\5f00";flex:none;margin-left:auto;font-size:15px;color:var(--text-faint)}.followup-item[open]>summary:after{content:"\6536\8d77"}.followup-item>summary h4{flex:1;min-width:0;margin:0;font-size:16px;font-weight:600;line-height:1.6;color:var(--text)}.followup-item .followup-fold{display:block;margin:6px 0 0 auto;font-size:15px;color:var(--text-muted)}.followup-item:not([open])>summary h4{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.followup-item>summary:hover h4{text-decoration:underline;text-decoration-color:var(--accent-soft);text-underline-offset:4px}.followup-item[open]>summary{margin-bottom:10px}.followup-picker{display:flex;flex-direction:column;align-items:flex-start;gap:8px;margin-top:12px}.followup-picker>button{max-width:100%;white-space:normal;text-align:left;overflow-wrap:anywhere}.followup-picker form,.followup-picker label{display:grid;gap:8px;width:100%;min-width:0}.followup-picker textarea{width:100%;box-sizing:border-box}.followup-picker form>button{justify-self:start}@keyframes mark-in{0%{opacity:0}}@keyframes badge-in{0%{transform:scale(.4);opacity:0}}@keyframes dot-pulse{0%,to{box-shadow:0 0 color-mix(in srgb,var(--warn) 45%,transparent);opacity:1}50%{box-shadow:0 0 0 5px transparent;opacity:.55}}@keyframes page-in{0%{opacity:0;transform:translateY(10px)}}@keyframes ink-in{0%{opacity:0;transform:translateY(6px)}}@keyframes follow-in{0%{opacity:0;transform:translateY(6px)}}@keyframes card-in{0%{opacity:0;transform:translateY(10px) scale(.985)}}@keyframes shimmer{to{background-position:-200% 0}}@keyframes backdrop-in{0%{background:#0000;backdrop-filter:blur(0)}to{background:#0009;backdrop-filter:blur(5px)}}@keyframes modal-in{0%{opacity:0;transform:translateY(8px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes card-deal{0%{opacity:0;transform:translateY(22px) rotate(2.5deg)}}@keyframes stack-in{0%{opacity:0}}@keyframes bar-in{0%{transform:scaleX(.04);opacity:0}}@keyframes option-reveal{0%{grid-template-rows:0fr;opacity:0}}@keyframes option-ink{0%{transform:translateY(-6px)}}@keyframes rise-in{0%{opacity:0;transform:translateY(10px) scale(.994)}to{opacity:1;transform:none}}.show-other-courses{margin:14px 0 18px;padding:6px 0;border:0;background:transparent;color:var(--text-muted);font-size:15px;text-decoration:underline;text-decoration-color:var(--line-strong);text-underline-offset:4px}.show-other-courses:hover:not(:disabled){background:transparent;color:var(--text);text-decoration-color:var(--accent-soft)}.role-prep{margin:-8px 0 18px}.role-prep details{max-width:640px}.role-prep summary{cursor:pointer;color:var(--text-muted);font-size:15px}.role-prep textarea{display:block;width:100%;margin:10px 0}.role-proposal{margin:10px 0}.role-weak{display:flex;align-items:center;flex-wrap:wrap;gap:7px;margin-top:12px}.role-weak strong{margin-right:4px}.course-route{display:grid;gap:8px;max-width:520px;margin:18px 0 22px;font-size:15px}.course-route-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;margin:0;color:var(--text-dim)}.course-route-label{color:var(--text-muted)}.course-route-head strong{color:var(--text);font-weight:600}.course-route-total{margin-left:auto;color:var(--text-muted);font-variant-numeric:tabular-nums}.course-route-bar{display:flex;gap:3px;height:6px}.course-route-bar>span{position:relative;min-width:4px;border-radius:3px;overflow:hidden;background:var(--line)}.course-route-bar>span>i{position:absolute;inset:0 auto 0 0;background:var(--ok)}.course-route-bar>span.is-current>i,.course-route-bar>span.is-started>i{background:var(--accent)}.course-route-bar>span.is-current{box-shadow:0 0 0 1px var(--accent-soft)}.course-route-list>summary{cursor:pointer;width:fit-content;color:var(--text-muted)}.course-route-list ol{list-style:none;margin:10px 0 6px;padding:0;display:grid;gap:2px}.course-route-list li{display:grid;grid-template-columns:10px minmax(0,1fr) auto auto;align-items:baseline;gap:4px 10px;padding:6px 0;border-top:1px solid var(--line-soft)}.course-route-dot{width:8px;height:8px;border-radius:50%;background:var(--line-strong);transform:translateY(-1px)}.course-route-list li.is-done .course-route-dot{background:var(--ok)}.course-route-list li.is-current .course-route-dot,.course-route-list li.is-started .course-route-dot{background:var(--accent)}.course-route-list li.is-current .course-route-title{font-weight:600;color:var(--text)}.course-route-title{min-width:0;overflow-wrap:anywhere;color:var(--text-dim)}.course-route-meta{color:var(--text-muted);white-space:nowrap;font-variant-numeric:tabular-nums}@container (max-width: 520px){.course-route-list li{grid-template-columns:10px minmax(0,1fr) auto}.course-route-meta{grid-column:2}}.group-reminder{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 18px;margin:0 0 18px;padding:10px 0 10px 14px;border-left:3px solid var(--accent);font-size:15px;line-height:1.6;color:var(--text-dim)}.group-reminder-actions{display:inline-flex;align-items:center;gap:14px}.group-reminder .link-btn{font-weight:600}.merge-suggestions{margin:0 0 18px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-surface)}.merge-suggestions-head,.merge-suggestion{display:flex;justify-content:space-between;align-items:center;gap:16px}.merge-suggestion{padding:12px 0;border-top:1px solid var(--line-soft)}.merge-suggestion p{margin:5px 0 0;color:var(--text-muted)}@media(max-width:600px){.merge-suggestion{align-items:flex-start;flex-direction:column}}.board-page{min-width:0}.board-page .page-heading{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:flex-start}.board-actions{display:flex;gap:8px}.board-columns{display:flex;gap:16px;overflow-x:auto;padding:4px 2px 18px;align-items:flex-start}.board-column{flex:1 0 260px;min-width:0;max-width:380px;border:1px solid var(--line-soft);border-radius:var(--radius);padding:12px;background:var(--bg-sunken)}.board-column.is-over{border-color:var(--accent);background:var(--bg-selected)}.board-column-heading{display:flex;align-items:center;gap:8px;margin-bottom:12px}.board-column-heading h2{font-size:15px;margin:0;flex:1;overflow-wrap:anywhere}.board-column-heading>button{padding:2px 8px}.board-dot{width:8px;height:8px;flex:0 0 8px;border-radius:50%;background:var(--accent-soft)}.board-dot.is-done{background:var(--ok)}.board-count{color:var(--text-muted);font-size:15px;font-variant-numeric:tabular-nums}.board-cards{display:flex;flex-direction:column;gap:10px;min-height:90px}.board-card{min-width:0;background:var(--bg-surface);padding:12px;border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow-sm)}.board-card[draggable=true]{cursor:grab}.board-card .board-card-title{padding:0;width:100%;display:block;background:none;border:0;border-radius:0;color:var(--text);font-size:15px;text-align:left;white-space:normal;overflow-wrap:anywhere;line-height:1.5}.board-note{font-size:15px;color:var(--text-muted);white-space:pre-wrap;overflow-wrap:anywhere;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:8px 0}.board-labels{display:flex;flex-wrap:wrap;gap:5px;margin-top:8px}.board-labels span{padding:2px 7px;font-size:15px;color:var(--accent-soft);background:var(--bg-selected);border-radius:5px;overflow-wrap:anywhere;max-width:100%}.board-due{display:block;color:var(--text-dim);margin-top:8px;font-size:15px}.board-due.is-overdue{color:var(--bad)}.board-card .board-origin{border:0;background:none;color:var(--text-muted);padding:6px 0;text-align:left;width:100%;overflow-wrap:anywhere;white-space:normal;font-size:15px}.board-card-controls{display:flex;gap:4px;padding-top:9px;margin-top:7px;border-top:1px solid var(--line-soft)}.board-card-controls button{padding:3px 7px;min-width:28px;font-size:15px}.board-card-controls .board-archive{margin-left:auto}.board-empty{color:var(--text-muted);text-align:center;padding:12px 0;font-size:15px;line-height:1.9}.board-empty small{font-size:15px}.board-add,.board-new-column{display:flex;gap:8px;margin-top:12px}.board-add input,.board-new-column input{width:100%;min-width:0}.board-new-column{max-width:350px}.board-add button,.board-new-column button{flex-shrink:0}.board-column-settings{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}.board-column-settings input{width:100%}.board-column-settings button{font-size:15px}.board-archive-list article{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}.board-archive-list article span{flex:1;overflow-wrap:anywhere}.board-dialog{background:var(--bg-surface);color:var(--text);border:1px solid var(--line);border-radius:var(--radius);padding:24px;width:min(560px,calc(100vw - 32px));max-height:calc(100dvh - 40px);overflow-y:auto;box-shadow:var(--shadow-lg)}.board-dialog::backdrop{background:color-mix(in srgb,var(--bg-sunken) 75%,transparent)}.board-dialog header,.board-dialog footer{display:flex;gap:10px;justify-content:space-between;align-items:center}.board-dialog h2{margin:0;font-size:21px}.board-dialog fieldset{border:0;padding:18px 0;margin:0;min-width:0;display:flex;flex-direction:column;gap:14px}.board-dialog label{display:flex;flex-direction:column;gap:6px;font-size:15px;color:var(--text-dim)}.board-dialog input,.board-dialog textarea{width:100%;min-width:0}.board-dialog textarea{resize:vertical}.board-dialog footer{justify-content:flex-end}.board-conflict{padding:12px;border:1px solid var(--warn);border-radius:var(--radius-sm);font-size:15px}.board-conflict button{margin-top:8px;white-space:normal}@media(max-width:600px){.board-column{flex-basis:260px}.board-dialog{padding:16px}}.dash,.exam,.wb{display:flex;flex-direction:column;gap:14px;min-width:0}.dash>.page-heading,.wb>.page-heading,.exam .page-heading{margin-bottom:4px}.dash-error,.exam-error,.wb-error{margin:0;padding:10px 14px;border:1px solid color-mix(in srgb,var(--bad) 45%,transparent);border-radius:var(--radius-sm);background:color-mix(in srgb,var(--bad) 12%,transparent);color:var(--bad);font-size:15px}.dash-hero{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:28px 56px;padding:8px 0 44px;border-bottom:1px solid var(--line-soft)}.dash-streak strong{display:block;font-family:var(--font-display);font-size:156px;font-weight:250;line-height:.8;letter-spacing:-.06em;font-variant-numeric:tabular-nums}.dash-streak>span{display:block;margin-top:14px;font-size:16px;font-weight:600}.dash-summary{display:flex;flex-direction:column;margin:16px 0 0;font-size:15px;line-height:1.8;color:var(--text-muted)}.dash-summary b{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums}.dash-heat-wrap{min-width:0}.dash-heat{display:grid;grid-template-rows:repeat(7,22px);grid-auto-flow:column;grid-auto-columns:22px;gap:4px;max-width:100%;overflow-x:auto}.dash-heat-cell{border-radius:4px;background:color-mix(in srgb,var(--text) 6%,transparent)}.dash-heat>.dash-heat-cell:last-child{box-shadow:0 0 0 1.5px var(--text-dim)}.dash-heat-cell.l1{background:color-mix(in srgb,var(--accent) 30%,transparent)}.dash-heat-cell.l2{background:color-mix(in srgb,var(--accent) 52%,transparent)}.dash-heat-cell.l3{background:color-mix(in srgb,var(--accent) 76%,transparent)}.dash-heat-cell.l4{background:var(--accent-soft)}.dash-heat-legend{display:flex;justify-content:space-between;align-items:center;margin:12px 0 0;color:var(--text-faint);font-size:15px}.dash-heat-scale{display:inline-flex;align-items:center;gap:4px}.dash-heat-legend .dash-heat-cell{width:10px;height:10px}.dash-split{display:grid;gap:48px;padding-top:18px}.dash-weak{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(320px,100%),1fr));column-gap:56px}.dash-accuracy{display:grid;grid-template-columns:minmax(200px,300px) minmax(0,1fr);align-items:start;column-gap:56px}.dash-accuracy>h2{grid-column:1 / -1}.dash-accuracy .dash-rates{flex-direction:column;gap:22px}.dash-trend-figure{margin:0}.dash-trend-figure figcaption{margin-bottom:6px;font-size:15px;color:var(--text-faint)}.dash-section h2{margin:0 0 14px;font-size:17px}.dash-section h2 small{font-family:var(--font-ui);font-size:15px;font-weight:400;color:var(--text-muted)}.dash-rates{display:flex;flex-wrap:wrap;gap:14px 40px;margin-bottom:18px}.dash-rates strong{display:block;font-family:var(--font-display);font-size:44px;font-weight:300;line-height:1;letter-spacing:-.04em;font-variant-numeric:tabular-nums}.dash-rates strong small{margin-left:2px;font-size:.42em;font-weight:400;letter-spacing:0;color:var(--text-muted)}.dash-rates span{display:inline-flex;align-items:center;gap:7px;margin-top:8px;font-size:15px;color:var(--text-muted)}.dash-rates i{width:14px;height:3px;border-radius:3px;background:var(--text-dim)}.dash-rates i.self{background:repeating-linear-gradient(90deg,var(--text-muted) 0 3px,transparent 3px 6px)}.dash-trend{display:block;width:100%;height:auto}.dash-trend-grid{stroke:var(--line-soft);stroke-width:1}.dash-trend-label{fill:var(--text-faint);font-size:15px}.dash-trend-line{fill:none;stroke:var(--text-dim);stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}.dash-trend-dot{fill:transparent}.dash-trend-dot:hover{fill:var(--text-dim)}.dash-trend-line.self{stroke:var(--text-muted);stroke-dasharray:3 4}.dash-trend-dot.self:hover{fill:var(--text-muted)}.dash-weak{list-style:none;margin:0;padding:0}.dash-weak-row{display:flex;align-items:center;gap:16px;padding:13px 0;border-bottom:1px solid var(--line-soft)}.dash-weak-name{display:flex;flex-direction:column;gap:3px;min-width:0;flex:1}.dash-weak-name strong{font-size:15.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dash-weak-name small{color:var(--text-muted);font-size:15px}.dash-weak-row button{flex:none}@container study (max-width: 860px){.dash-hero,.dash-accuracy{grid-template-columns:minmax(0,1fr)}.dash-accuracy .dash-rates{flex-direction:row;margin-bottom:18px}.dash-streak strong{font-size:104px}}.exam-setup{display:flex;flex-direction:column;gap:16px}.exam-setup .page-heading p{margin:0}.exam-rules{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(250px,100%),1fr));gap:2px 28px;color:var(--text-faint);font-size:15px;line-height:1.7}.exam-rules li:before{content:"\2014  "}.exam-panel{display:flex;flex-direction:column;gap:14px;padding:16px 18px;background:var(--bg-surface);border:1px solid var(--line-soft);border-radius:var(--radius)}.exam-sheet{gap:20px;max-width:860px;padding:22px 30px 20px;background:var(--bg-raised);border-color:var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card)}.exam-sheet>.exam-panel-head{padding-bottom:14px;border-bottom:2px solid var(--accent)}.exam-sheet>.exam-panel-head strong{font-family:var(--font-display);font-size:19px}.exam-sheet .exam-setup-tools button{border-color:transparent;background:transparent;color:var(--text-muted)}.exam-sheet .exam-setup-tools button:hover:not(:disabled){background:var(--bg-hover);color:var(--text)}.exam-panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.exam-panel-head>div:first-child{display:flex;flex-direction:column;gap:2px}.exam-panel-head small{font-size:15px}.exam-setup-tools{display:flex;gap:6px}.exam-setup-tools button{padding:6px 12px;font-size:15px}.exam-history ul{list-style:none;margin:0;padding:0}.exam-history li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-top:1px solid var(--line-soft)}.exam-history li>span{min-width:0}.exam-history li small{display:block;margin-top:3px;color:var(--text-muted);overflow-wrap:anywhere}.exam-history li button{flex:none}.exam-empty{display:flex;flex-direction:column;align-items:center;padding:48px 28px}.exam-empty h2{margin:12px 0 6px}.exam-empty p{max-width:440px;margin:0 auto}.exam-empty-actions{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:20px}.exam-empty-actions:empty{display:none}.exam-decks{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(260px,100%),1fr));gap:0 28px}.exam-decks>li{min-width:0}.exam-deck{display:flex;flex-direction:row;align-items:center;gap:12px;margin:0;padding:12px 8px;border:0;border-bottom:1px solid var(--line-soft);border-radius:0;background:transparent;cursor:pointer;transition:border-color .15s var(--ease),background .15s var(--ease)}.exam-deck:hover{background:var(--bg-hover)}.exam-deck.picked{background:color-mix(in srgb,var(--accent) 7%,transparent)}.exam-deck input{accent-color:var(--accent)}.exam-deck-name{display:flex;flex-direction:column;min-width:0;flex:1 1 auto}.exam-deck-name strong{font-size:15px;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.exam-deck-name small{color:var(--text-muted);font-size:15px}.exam-type-settings{display:flex;flex-direction:column;gap:8px;padding-top:4px}.exam-type-settings>div{display:flex;flex-wrap:wrap;gap:2px;width:fit-content;max-width:100%;padding:3px;border-radius:999px;background:color-mix(in srgb,var(--text) 6%,transparent)}.exam-type-settings button{padding:6px 14px;border:0;border-radius:999px;background:transparent;font-size:15px;color:var(--text-muted)}.exam-type-settings button:hover:not(:disabled){background:transparent;color:var(--text)}.exam-type-settings button.picked{background:var(--bg-raised);color:var(--text);box-shadow:0 1px 3px #20160c26}.exam-type-settings small{font-size:15px}.exam-type-settings .warning{margin:0}.exam-setup-foot{padding-top:14px;border-top:1px solid var(--line-soft);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.exam-count{display:inline-flex;flex-direction:row;align-items:center;gap:8px;margin:0;color:var(--text-dim);font-size:15px}.exam-count input{width:68px;padding:7px 10px;background:var(--bg-sunken);border:1px solid var(--line);border-radius:var(--radius-sm);color:var(--text);font-variant-numeric:tabular-nums}.exam-sheet .exam-setup-foot .primary{padding:12px 26px;font-size:16px}.exam-count small{color:var(--text-muted)}.exam-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;flex-wrap:wrap}.exam-head h2{margin:2px 0 0}.exam-head-right{display:flex;align-items:center;gap:10px}.exam-timer,.exam-progress{padding:4px 10px;border:1px solid var(--line-soft);border-radius:999px;background:var(--bg-sunken);color:var(--text-dim);font-size:15px;font-variant-numeric:tabular-nums;white-space:nowrap}.exam-progress{color:var(--text);font-weight:600}.exam-card{display:flex;flex-direction:column;gap:14px;padding:18px 20px;background:var(--bg-surface);border:1px solid var(--line);border-radius:var(--radius)}.exam-card-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.exam-chip{flex:none;padding:2px 9px;border-radius:999px;background:color-mix(in srgb,var(--accent) 14%,transparent);color:var(--accent-soft);font-size:15px;white-space:nowrap}.exam-chip.dim{background:var(--bg-sunken);border:1px solid var(--line-soft);color:var(--text-muted)}.exam-prompt{font-size:16px;line-height:1.6}.exam-prompt>:first-child{margin-top:0}.exam-prompt>:last-child{margin-bottom:0}.exam-options{display:flex;flex-direction:column;gap:8px}.exam-option{display:flex;align-items:flex-start;gap:10px;width:100%;text-align:left;padding:11px 13px;border-radius:var(--radius-sm)}.exam-option.picked{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,transparent);box-shadow:var(--ring)}.exam-option-letter{flex:none;width:22px;height:22px;display:grid;place-items:center;margin-top:1px;border:1px solid var(--line);border-radius:50%;background:var(--bg-sunken);color:var(--text-muted);font-size:15px}.exam-option.picked .exam-option-letter{border-color:transparent;background:var(--accent);color:var(--accent-ink)}.exam-option-text{min-width:0;font-size:15px}.exam-toolbar{display:flex;justify-content:space-between;gap:10px}.exam-foot{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.exam-foot p{margin:0}.exam-confirm{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:12px 14px;border:1px solid color-mix(in srgb,var(--warn) 45%,transparent);border-radius:var(--radius-sm);background:color-mix(in srgb,var(--warn) 12%,transparent)}.exam-confirm p{margin:0;font-size:15px}.exam-confirm strong{color:var(--warn)}.exam-confirm-actions{display:flex;gap:8px}.exam-report{display:flex;flex-direction:column;gap:16px}.exam-score-row{display:flex;align-items:center;gap:22px;flex-wrap:wrap}.exam-score{display:flex;flex-direction:column}.exam-score strong{font-size:52px;line-height:1;color:var(--accent);font-variant-numeric:tabular-nums}.exam-score strong i{font-style:normal;font-size:24px;margin-left:2px;color:var(--text-muted)}.exam-score small{margin-top:4px;color:var(--text-muted);font-size:15px}.exam-stats{list-style:none;display:flex;gap:18px;margin:0;padding:0;flex-wrap:wrap}.exam-stats li{display:flex;flex-direction:column}.exam-stats strong{font-size:19px;font-variant-numeric:tabular-nums}.exam-stats small{color:var(--text-muted);font-size:15px}.exam-bars{display:flex;flex-direction:column;gap:8px}.exam-bar-row{display:grid;grid-template-columns:minmax(90px,180px) 1fr auto;align-items:center;gap:10px}.exam-bar-label{font-size:15px;color:var(--text-dim);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.exam-bar-track{height:8px;border-radius:999px;background:var(--bg-sunken);overflow:hidden}.exam-bar-fill{display:block;height:100%;min-width:2px;border-radius:999px;background:var(--accent);transition:width .4s var(--ease)}.exam-bar-fill.soft{background:color-mix(in srgb,var(--accent) 55%,transparent)}.exam-bar-value{color:var(--text-muted);font-size:15px;font-variant-numeric:tabular-nums;white-space:nowrap}.exam-wrong ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.exam-wrong-row{display:flex;align-items:center;gap:10px;padding:8px 10px;border:1px solid var(--line-soft);border-radius:var(--radius-sm);background:var(--bg-surface)}.exam-wrong-prompt{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-dim);font-size:15px}.exam-report-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.exam-path-note{margin:0}.wb-group{display:flex;flex-direction:column;margin-top:14px}.wb-group-head{display:flex;align-items:baseline;gap:10px;padding-bottom:10px;border-bottom:1px solid var(--line)}.wb-group-head strong{font-family:var(--font-display);font-size:17px}.wb-group-head small{font-size:15px}.wb-rows{list-style:none;margin:0;padding:0}.wb-row{display:flex;align-items:center;gap:14px;padding:12px 8px;border-bottom:1px solid var(--line-soft);border-radius:var(--radius-sm);transition:background .15s var(--ease)}.wb-row:hover{background:var(--bg-hover)}.wb-topic{flex:none;width:108px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-muted);font-size:15px}.wb-prompt{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:15px}.wb-grade{flex:none;color:var(--bad);font-size:15px}.wb-grade:before{content:"\d7  "}.wb-grade.self{color:var(--warn)}.wb-grade.self:before{content:"\25cb  "}.wb-pages{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:8px;color:var(--text-muted);font-size:15px}.wb-row button{flex:none;padding:5px 14px;border-radius:999px;border-color:var(--line);background:transparent}.wb-row button:hover:not(:disabled){background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}@media(hover:hover){.wb-row button{opacity:0;transition:opacity .15s var(--ease),background .15s var(--ease)}.wb-row:hover button,.wb-row:focus-within button{opacity:1}}.wb-empty h2{margin:0}.study-empty-actions{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:20px}.session-summary.result-page{max-width:760px;margin:48px auto 72px;text-align:left;padding:0 24px}.result-page .result-kicker,.exam-report .result-kicker{color:var(--accent-soft);font-size:15px;font-weight:800;letter-spacing:.17em;text-transform:uppercase}.result-page .result-title{margin:10px 0 6px;font-size:clamp(30px,4vw,43px)}.result-page .result-subtitle{margin:0 0 26px;color:var(--text-muted, #aeb8c5)}.result-hero{display:grid;grid-template-columns:minmax(190px,.75fr) 1.4fr;gap:24px;align-items:center;padding:28px;border:1px solid color-mix(in srgb,var(--accent) 25%,transparent);border-radius:24px;background:radial-gradient(circle at 0 0,color-mix(in srgb,var(--accent) 18%,transparent),transparent 55%),var(--bg-surface)}.result-headline strong{display:block;font-size:clamp(52px,8vw,78px);line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-.06em}.result-headline span{display:block;margin-top:10px;color:var(--text-muted, #aeb8c5);font-size:15px}.result-headline small{display:block;margin-top:8px;color:var(--text-muted, #aeb8c5)}.result-breakdown{min-width:0}.result-breakdown-track{display:flex;gap:3px;height:22px;overflow:hidden;border-radius:999px;background:var(--bg-sunken)}.result-segment{min-width:0}.result-segment-correct{background:var(--ok)}.result-segment-practice{background:var(--warn)}.result-segment-remaining{background:var(--text-faint)}.result-breakdown-legend{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:18px}.result-legend-item{display:inline-flex;gap:7px;align-items:center;font-size:15px;color:var(--text-muted, #aeb8c5)}.result-legend-item strong{color:var(--text, #f3f5fa);font-variant-numeric:tabular-nums}.result-legend-dot{display:inline-block;width:9px;height:9px;border-radius:50%}.result-page .summary-topics{margin:20px 0;padding:22px 24px;border:1px solid var(--line);border-radius:20px;background:var(--bg-surface)}.result-page .summary-topics h3{margin:0 0 12px;font-size:17px}.result-page .summary-topics .muted{margin:0}.result-page .summary-actions{justify-content:flex-start;margin-top:22px}.result-page .result-details,.exam-report .result-details{border:1px solid var(--line);border-radius:16px;padding:15px 20px;margin-top:18px}.result-details>summary{cursor:pointer;font-weight:650}.result-details[open]>summary{margin-bottom:18px}.exam-report .result-hero{margin-bottom:4px}.exam-report .result-weak{padding:20px 24px;border:1px solid var(--line);border-radius:18px;background:var(--bg-surface)}.exam-report .result-weak h2{margin:0 0 12px;font-size:19px}.exam-report .result-weak ol{margin:0;padding-left:22px}.exam-report .result-weak li{padding:4px 0}.exam-report .result-weak .muted{margin:0}.exam-report .result-weak button{margin-top:16px}.result-note-badge{font-size:15px;text-decoration:none}@media(max-width:640px){.session-summary.result-page{margin-top:28px;padding:0 14px}.result-hero{grid-template-columns:1fr;padding:22px;gap:24px}}.oral-exam{display:flex;flex-direction:column;gap:20px}.oral-heading,.oral-progress,.oral-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.oral-heading h1{margin:5px 0 0}.oral-intro,.oral-question,.oral-history,.oral-report{padding:24px;border:1px solid var(--line);border-radius:20px;background:var(--bg-surface)}.oral-intro h2,.oral-history h2{margin-top:0}.oral-intro p{color:var(--text-dim);max-width:68ch}.oral-intro label{display:flex;align-items:center;gap:10px;margin:18px 0}.oral-intro input{width:78px;padding:8px}.oral-history{display:grid;gap:8px}.oral-history button{text-align:left}.oral-progress{color:var(--text-muted);font-variant-numeric:tabular-nums}.oral-question{display:grid;gap:18px}.oral-prompt{font-size:21px;line-height:1.5}.oral-question details{padding:12px 14px;border:1px solid var(--line-soft);border-radius:12px}.oral-question details summary,.oral-report details summary{cursor:pointer}.oral-question details ul{margin-bottom:0}.oral-answer-label{display:grid;gap:9px;font-weight:650}.oral-answer-label textarea{width:100%;box-sizing:border-box;min-height:136px;resize:vertical;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--bg-sunken);color:var(--text);font:inherit;font-weight:400;line-height:1.5}.oral-answer-label textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.oral-followup{padding:18px;border-left:3px solid var(--accent);background:var(--bg-raised);border-radius:10px}.oral-followup p{margin:8px 0 18px}.oral-report{display:grid;gap:18px}.oral-report h2{margin:0;font-size:clamp(28px,4vw,42px)}.oral-report>p{margin:0}.oral-band-bar{display:flex;gap:3px;height:22px;background:var(--bg-sunken);border-radius:999px;overflow:hidden}.oral-band-bar .strong{background:var(--ok)}.oral-band-bar .developing{background:var(--warn)}.oral-band-bar .weak{background:var(--bad)}.oral-band-legend{display:flex;gap:16px;flex-wrap:wrap;color:var(--text-dim);font-size:15px}.oral-report .result-weak{padding:18px;border:1px solid var(--line);border-radius:14px}.oral-report .result-weak h3{margin:0 0 10px}.oral-report .result-weak ol{margin-top:0}.oral-report .result-details{border:1px solid var(--line);border-radius:14px;padding:16px}.oral-report-entry{padding:18px 0;border-top:1px solid var(--line-soft)}.oral-report-entry:first-of-type{margin-top:14px}.oral-report-entry p{color:var(--text-dim);white-space:pre-wrap;overflow-wrap:anywhere}@media(max-width:560px){.oral-intro,.oral-question,.oral-history,.oral-report{padding:18px}}.graph{display:flex;flex-direction:column;gap:10px;min-width:0}.graph:fullscreen{box-sizing:border-box;width:100%;height:100%;max-height:none;min-height:0;padding:10px 14px 8px;overflow:hidden;background:var(--bg-canvas);color:var(--text)}.graph-toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.graph-modes{display:inline-flex;gap:2px;padding:2px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg-sunken)}.graph-mode{border:none;background:transparent;padding:5px 12px;border-radius:7px;font-size:13px}.graph-mode:hover:not(:disabled){background:var(--bg-hover);border-color:transparent}.graph-modes .graph-mode.active{background:var(--accent);color:var(--accent-ink)}.graph-legend{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-left:auto;font-size:12px;color:var(--text-muted)}.graph-legend-item{display:inline-flex;align-items:center;gap:5px;white-space:nowrap}.graph-swatch{width:10px;height:10px;border-radius:3px;flex:none}.graph-swatch.gn-mastered{background:var(--ok)}.graph-swatch.gn-familiar{background:color-mix(in srgb,var(--ok) 42%,transparent)}.graph-swatch.gn-learning{background:var(--warn)}.graph-swatch.gn-weak{background:var(--bad)}.graph-swatch.gn-new{background:var(--text-faint)}.graph-line-demo{flex:none}.graph-toolbar-sub{gap:10px;font-size:12px;color:var(--text-muted)}.graph-scope{white-space:nowrap}.graph-zoom{display:inline-flex;align-items:center;gap:2px;padding:2px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg-sunken)}.graph-zoom button{border:none;background:transparent;padding:4px 9px;border-radius:7px;font-size:13px;min-width:30px}.graph-zoom button:hover:not(:disabled){background:var(--bg-hover)}.graph-zoom-value{min-width:44px;text-align:center;font-size:12px;color:var(--text-muted);font-variant-numeric:tabular-nums}.graph-zoom .graph-fit{min-width:0}.graph-actions{display:inline-flex;align-items:center;gap:8px;margin-left:auto}.graph-notice{font-size:12px;color:var(--text-muted)}.graph-truncated{font-size:12px;color:var(--warn)}.graph-viewport{position:relative;overflow:auto;max-width:100%;height:min(1200px,68vh);border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--bg-surface);cursor:grab;overscroll-behavior:contain}.graph.graph-canvas .graph-viewport{flex:1 1 auto;height:auto;max-height:none;min-height:0}.graph-viewport.is-panning{cursor:grabbing;user-select:none}.graph-plane{position:relative}.graph-svg{display:block;transform-origin:0 0}.graph-state{padding:32px 16px;text-align:center;color:var(--text-muted)}.graph-error{color:var(--bad)}.graph-error button{margin-top:10px}.graph-hint{font-size:11.5px;color:var(--text-faint)}.gn-node{stroke-width:1.2;transition:stroke-width .12s var(--ease)}.gn-deck{stroke-width:1.5}.gn-mastered{fill:color-mix(in srgb,var(--ok) 22%,var(--bg-surface));stroke:var(--ok)}.gn-familiar{fill:color-mix(in srgb,var(--ok) 14%,var(--bg-surface));stroke:color-mix(in srgb,var(--ok) 55%,var(--bg-surface))}.gn-learning{fill:color-mix(in srgb,var(--warn) 24%,var(--bg-surface));stroke:var(--warn)}.gn-weak{fill:color-mix(in srgb,var(--bad) 22%,var(--bg-surface));stroke:var(--bad)}.gn-new{fill:color-mix(in srgb,var(--text-faint) 16%,var(--bg-surface));stroke:var(--text-faint)}.gn-ghost{fill:transparent;stroke:var(--line);stroke-dasharray:4 3}.gn-label{fill:var(--text);font-size:12px}.gn-deck-label{font-size:13px;font-weight:600}.gn-card-label{font-size:11.5px}.gn-meta{fill:var(--text-muted);font-size:10.5px}.gn-ghost-label{fill:var(--text-faint)}.gn-clickable{cursor:pointer}.gn-clickable:hover .gn-node{stroke-width:2.2}.gn-clickable:focus{outline:none}.gn-clickable:focus-visible .gn-node{stroke:var(--accent);stroke-width:2.2}.gn-tree{fill:none;stroke:var(--line);stroke-width:1.4}.gn-prereq{fill:none;stroke:var(--accent);stroke-width:1.4;stroke-dasharray:5 4}.gn-order{fill:none;stroke:var(--text-faint);stroke-width:1.4}.gn-arrow{stroke:none}.gn-arrow-prereq{fill:var(--accent)}.gn-arrow-order{fill:var(--text-faint)}.cloze{display:flex;flex-direction:column;gap:6px}.cloze-hint{font-size:12px;color:var(--text-muted)}.cloze-text{line-height:2.15;white-space:pre-wrap;word-break:break-word}.cloze-blank{display:inline-block;vertical-align:baseline;box-sizing:border-box;min-width:6ch}input.cloze-blank{font:inherit;color:var(--text);background:var(--bg-raised);border:1px solid var(--line-strong);border-radius:8px;padding:1px 8px;text-align:center;transition:border-color .15s var(--ease),box-shadow .15s var(--ease)}input.cloze-blank:focus{outline:none;border-color:var(--accent);box-shadow:var(--ring)}input.cloze-blank:disabled{opacity:.65}.cloze-right,.cloze-wrong{border-radius:8px;padding:1px 8px;font-size:13px}.cloze-right{color:var(--ok);border:1px solid var(--ok);background:color-mix(in srgb,var(--ok) 10%,transparent)}.cloze-wrong{color:var(--bad);border:1px solid var(--bad);background:color-mix(in srgb,var(--bad) 10%,transparent)}.cloze-mark{margin-left:4px}.cloze-yours{display:block;font-size:11px;line-height:1.5;color:var(--text-dim)}.cloze-expected{color:var(--text)}.cloze-missing{margin:0;color:var(--text-muted)}.review-body.with-coach{grid-template-columns:minmax(0,1fr) minmax(260px,300px);column-gap:20px}.review-body.with-coach>.question-area{width:min(568px,100%)}.review-body.with-coach>.coach-panel{grid-column:2;grid-row:1;position:sticky;top:72px;margin-top:43px;max-height:calc(100dvh - 140px)}.coach-panel.inline{margin:16px 0 0}.coach-panel.inline .coach-thread{max-height:360px}.coach-panel.inline .coach-thread:empty{display:none}.coach-panel.inline .coach-head{border-bottom:0}.coach-panel.inline:has(.coach-thread:not(:empty)) .coach-head{border-bottom:1px solid var(--line-soft)}.coach-panel{grid-column:3;grid-row:1;position:sticky;top:24px;margin-top:43px;max-height:calc(100dvh - 140px)}@container study (max-width: 1239px){.review-body.with-coach>.coach-panel{grid-column:1;grid-row:2;width:min(568px,calc(100% - 48px));margin:-26px auto 40px}}.coach-panel{display:flex;flex-direction:column;min-height:0;border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--bg-glass);backdrop-filter:blur(var(--glass-blur));box-shadow:var(--shadow-sm);contain:layout paint;animation:coach-in .26s var(--ease) both}.coach-head{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--line-soft);font-size:15px;color:var(--text-dim)}.coach-head strong{color:var(--text);font-size:15px}.coach-avatar{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:15px;background:linear-gradient(135deg,var(--accent),var(--info));color:var(--accent-ink);flex-shrink:0}.coach-head .spacer{flex:1}.coach-chip{border:1px solid var(--line);border-radius:999px;padding:3px 9px;font-size:15px;line-height:1.5;background:transparent;color:var(--text-dim);white-space:nowrap;transition:background-color .16s ease,border-color .16s ease,color .16s ease}.coach-chip:hover:not(:disabled){border-color:var(--accent);color:var(--text)}.coach-chip.on{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.coach-chip.ready{border-color:var(--ok);color:var(--ok)}.coach-chip:disabled{opacity:.55}.coach-thread{display:flex;flex-direction:column;gap:10px;padding:12px;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;min-height:0}.coach-empty{margin:0;color:var(--text-faint);font-size:15px;line-height:1.7}.coach-bubble{align-self:flex-start;max-width:100%;padding:10px 12px;border-radius:4px 14px 14px;background:var(--bg-raised);border:1px solid var(--line-soft);font-size:15px;line-height:1.7;color:var(--text);animation:coach-rise .24s var(--ease) both}.coach-bubble.me{align-self:flex-end;border-radius:14px 4px 14px 14px;background:var(--bg-selected);color:var(--text)}.coach-bubble.system{background:transparent;border-style:dashed;color:var(--text-dim);font-size:15px}.coach-point{display:block;font-weight:600;margin-bottom:4px}.coach-bubble p{margin:0}.coach-check{margin-top:8px;padding-top:8px;border-top:1px solid var(--line-soft)}.coach-check-q{font-size:15px;color:var(--text-dim);margin-bottom:6px}.coach-options{display:flex;flex-wrap:wrap;gap:6px}.coach-options .coach-chip{font-size:15px;padding:4px 10px}.coach-chip.right{border-color:var(--ok);color:var(--ok)}.coach-chip.wrong{border-color:var(--bad);color:var(--bad)}.coach-replies{display:flex;flex-wrap:wrap;gap:6px;align-self:flex-end;animation:coach-rise .24s var(--ease) both}.coach-card{padding:10px 12px;border-radius:var(--radius-sm);background:var(--accent-glow);font-size:15px;line-height:1.7;animation:coach-rise .24s var(--ease) both}.coach-card p{margin:0 0 8px;color:var(--text)}.coach-card .coach-options{gap:6px}.coach-typing{align-self:flex-start;display:inline-flex;gap:4px;padding:10px 12px;border-radius:4px 14px 14px;background:var(--bg-raised);border:1px solid var(--line-soft)}.coach-typing i{width:6px;height:6px;border-radius:50%;background:var(--text-muted);animation:coach-dot 1s infinite ease-in-out}.coach-typing i:nth-child(2){animation-delay:.15s}.coach-typing i:nth-child(3){animation-delay:.3s}.coach-typing+small{color:var(--text-faint);font-size:15px}.thumbs{display:inline-flex;align-items:center;gap:4px;position:relative}.thumbs>button{min-width:34px;padding-left:10px;padding-right:10px}.thumbs>button[aria-pressed=true]{border-color:var(--accent);color:var(--text);background:var(--accent-glow)}.thumb-tray{position:absolute;bottom:calc(100% + 8px);left:0;z-index:5;display:flex;flex-wrap:wrap;gap:6px;width:max-content;max-width:min(360px,80vw);padding:10px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--bg-glass-strong);backdrop-filter:blur(var(--glass-blur));box-shadow:var(--shadow-md);animation:coach-pop .16s var(--ease) both}.thumb-tray small{width:100%;color:var(--text-faint);font-size:15px}.thumb-tray kbd,.shortcut-sheet kbd{font:600 10px/1 ui-monospace,monospace;padding:2px 4px;border-radius:4px;border:1px solid var(--line);color:var(--text-muted);margin-right:4px}.autopilot-bar{position:relative;height:3px;margin:14px 12px 0;border-radius:3px;background:var(--line-soft);overflow:hidden}.autopilot-bar:after{content:"";position:absolute;inset:0;background:var(--accent);transform-origin:left;animation:autopilot-fill var(--autopilot-ms, 1.5s) linear both}.autopilot-note{display:block;margin:6px 12px 0;font-size:15px;color:var(--text-faint)}.coach-debrief{width:min(560px,100%);margin:18px auto 6px;padding:18px 20px;border-radius:var(--radius);text-align:left;border:1px solid var(--line-soft);background:linear-gradient(160deg,var(--accent-glow),transparent 70%),var(--bg-surface);box-shadow:var(--shadow-md);animation:coach-rise .32s var(--ease) both}.coach-debrief .eyebrow{margin-bottom:6px}.coach-debrief h2{margin:0 0 6px;font-size:21px;line-height:1.4;color:var(--text)}.coach-debrief>p{margin:0 0 12px;color:var(--text-dim);font-size:15px;line-height:1.7}.coach-score-split{display:flex;flex-wrap:wrap;gap:6px 16px;margin:0 0 12px;color:var(--text-dim);font-size:15px}.coach-score-split strong{color:var(--text)}.coach-levels{display:flex;gap:6px;margin:0 0 12px;height:8px;border-radius:6px;overflow:hidden;background:var(--line-soft)}.coach-levels span{display:block;height:100%;transition:flex-grow .4s var(--ease)}.coach-levels .recall{background:var(--text-faint)}.coach-levels .concept{background:var(--info)}.coach-levels .apply{background:var(--ok)}.coach-legend{display:flex;flex-wrap:wrap;gap:12px;font-size:15px;color:var(--text-muted);margin:-4px 0 12px}.coach-legend i{display:inline-block;width:8px;height:8px;border-radius:2px;margin-right:4px;vertical-align:0}.coach-insights{margin:0 0 14px;padding-left:18px;font-size:15px;line-height:1.8;color:var(--text-dim)}.coach-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.coach-countdown{font-size:15px;color:var(--text-muted)}.skeleton{border-radius:6px;background:linear-gradient(90deg,var(--line-soft) 25%,var(--bg-hover) 50%,var(--line-soft) 75%);background-size:200% 100%;animation:shimmer 1.2s infinite linear}.skeleton.h{height:22px;width:70%;margin-bottom:10px}.skeleton.l{height:12px;width:92%;margin-bottom:8px}.skeleton.s{height:12px;width:55%}.coach-offer{display:flex;align-items:center;gap:12px;margin:15px 25px 0;padding:12px 16px;border-radius:var(--radius);border:1px solid var(--accent-glow);background:linear-gradient(120deg,var(--accent-glow),transparent 80%),var(--bg-surface);animation:coach-rise .3s var(--ease) both}.coach-offer>div{flex:1;min-width:0}.coach-offer strong{display:block;color:var(--text);font-size:15px}.coach-offer small{color:var(--text-dim);font-size:15px}@container study (max-width: 600px){.coach-offer{flex-wrap:wrap}}.shortcut-sheet{position:fixed;right:20px;bottom:20px;z-index:40;width:min(340px,calc(100vw - 40px));padding:14px 16px;border-radius:var(--radius);border:1px solid var(--line);background:var(--bg-glass-strong);backdrop-filter:blur(var(--glass-blur));box-shadow:var(--shadow-lg);font-size:15px;color:var(--text-dim);animation:coach-pop .18s var(--ease) both}.shortcut-sheet h3{margin:0 0 8px;font-size:15px;color:var(--text);display:flex;justify-content:space-between}.shortcut-sheet dl{display:grid;grid-template-columns:auto 1fr;gap:6px 12px;margin:0}.shortcut-sheet dt{white-space:nowrap}.shortcut-sheet dd{margin:0}@keyframes coach-in{0%{opacity:0;transform:translateY(6px)}}@keyframes coach-rise{0%{opacity:0;transform:translateY(8px)}}@keyframes coach-pop{0%{opacity:0;transform:scale(.96)}}@keyframes coach-dot{0%,80%,to{opacity:.3;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}@keyframes autopilot-fill{0%{transform:scaleX(0)}to{transform:scaleX(1)}}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media(prefers-reduced-motion:reduce){.coach-panel,.coach-bubble,.coach-replies,.coach-card,.coach-debrief,.coach-offer,.thumb-tray,.shortcut-sheet{animation:none}.coach-typing i,.skeleton{animation-duration:2.4s}}.inline-check{display:flex;flex-direction:row;align-items:center;gap:8px}.inline-check input{width:auto;margin:0}.origin-tag{border:1px solid var(--line);border-radius:999px;padding:1px 8px;color:var(--text-dim);white-space:nowrap;max-width:260px;overflow:hidden;text-overflow:ellipsis}.coach-answer{display:block;margin-bottom:6px;font-size:15px;color:var(--text-dim)}.coach-answer b{color:var(--text);font-weight:600}.assist-area{margin-top:8px}.assist-form{display:flex;flex-direction:column;gap:8px;padding:12px 14px;border:1px solid var(--line-soft);border-radius:var(--radius-sm);background:var(--bg-surface)}.assist-form label{display:grid;gap:6px;margin:0;color:var(--text-dim);font-size:15px}.assist-form textarea{width:100%;box-sizing:border-box;font-size:15px}.assist-form>strong{color:var(--text);font-size:15px}.assist-quick-choices{display:flex;flex-wrap:wrap;gap:7px}.assist-quick-choices .pill{font-size:15px;padding:7px 11px}.assist-form>p{margin:0}.assist-actions{display:flex;flex-wrap:wrap;gap:6px}.assist-status{display:flex;align-items:center;gap:8px;margin:8px 0 0;color:var(--text-muted);font-size:15px}.assist-status.failed{color:var(--warn)}.assist-spin{width:10px;height:10px;border-radius:50%;border:2px solid color-mix(in srgb,var(--accent) 35%,transparent);border-top-color:var(--accent);animation:assist-spin .9s linear infinite}@keyframes assist-spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.assist-spin{animation:none}}.blog-notes-page{max-width:none}.note-list{display:grid;gap:8px;max-width:700px}.note-list button{display:flex;justify-content:space-between;gap:12px;text-align:left;padding:12px 16px}.note-list small{opacity:.7}.note-actions{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.note-title{display:grid;gap:6px;max-width:800px;margin:14px 0}.note-title input{width:100%}.note-editor{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;margin-top:18px}.note-edit-pane,.note-preview-pane{min-width:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--bg-surface)}.note-edit-pane>strong,.note-preview-pane>strong{display:block;padding:10px 14px;border-bottom:1px solid var(--line)}.note-edit-pane .cm-editor{font-size:15px}.note-preview{height:560px;overflow:auto;padding:16px 22px;line-height:1.65;overflow-wrap:anywhere}.note-preview h1,.note-preview h2,.note-preview h3{margin:1.2em 0 .45em}.note-preview h1:first-child{margin-top:0}.note-preview pre{padding:12px;overflow:auto;border-radius:7px;background:var(--bg-sunken)}.note-preview table{border-collapse:collapse}.note-preview th,.note-preview td{border:1px solid var(--line);padding:5px 9px}.note-preview math{font-size:1.14em}.note-linking,.note-publish{margin-top:16px;padding:12px;border:1px solid var(--line);border-radius:8px}.note-linking summary,.note-publish summary{cursor:pointer}.note-card-search{display:flex;gap:8px;margin:10px 0}.note-card-search input{flex:1;min-width:0}.note-search-result{display:block;width:100%;margin:5px 0;text-align:left}@media(max-width:800px){.note-editor{grid-template-columns:1fr}.note-preview{height:380px}}.note-edit-pane .cm-editor,.note-edit-pane .cm-gutters{background:var(--bg-sunken)!important}.note-edit-pane .cm-gutters{border-right:1px solid var(--line-soft)!important;color:var(--text-faint)!important}.note-edit-pane .cm-activeLine,.note-edit-pane .cm-activeLineGutter{background:var(--bg-hover)!important}.note-edit-pane .cm-editor.cm-focused{outline:none}.skeleton-page .page-heading{margin-bottom:14px}.sk-error,.sk-warn{margin:0 0 12px;padding:9px 12px;border-radius:var(--radius-sm);font-size:15px}.sk-error{border:1px solid color-mix(in srgb,var(--bad) 45%,transparent);background:color-mix(in srgb,var(--bad) 12%,transparent);color:var(--bad)}.sk-warn{margin:10px 0 0;border:1px solid color-mix(in srgb,var(--warn) 45%,transparent);background:color-mix(in srgb,var(--warn) 10%,transparent);color:var(--warn)}.sk-layout{display:grid;grid-template-columns:minmax(260px,380px) minmax(0,1fr);gap:14px;align-items:start}@container study (max-width: 860px){.sk-layout{grid-template-columns:minmax(0,1fr)}}.sk-panel{display:flex;flex-direction:column;gap:10px;min-width:0;padding:14px 16px;border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--bg-surface)}.sk-panel-head{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}.sk-panel-head small{font-size:15px}.study-app button.sk-link{margin-left:auto;padding:2px 8px;border:0;background:transparent;color:var(--accent-soft);font-size:15px}.study-app .sk-search{padding:8px 11px;font-size:15px}.sk-topics{list-style:none;margin:0;padding:0;max-height:min(62vh,560px);overflow-y:auto;overscroll-behavior:contain}.sk-topics>li{border-radius:var(--radius-sm)}.sk-topics>li.picked{background:color-mix(in srgb,var(--accent) 9%,transparent)}.sk-topic-row{display:flex;align-items:center;gap:8px;padding:0 6px}.study-app .sk-topic-row input,.study-app .sk-decks input{width:auto;accent-color:var(--accent)}.study-app button.sk-topic-name{display:flex;align-items:center;gap:8px;flex:1;min-width:0;padding:8px 4px;border:0;background:transparent;text-align:left}.study-app button.sk-topic-name:hover:not(:disabled){background:transparent}.sk-caret{flex:none;color:var(--text-muted);font-size:15px;transition:transform .15s var(--ease)}[aria-expanded=true]>.sk-caret{transform:rotate(90deg)}.sk-topic-title{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:15px}.sk-topic-name small,.sk-decks small{flex:none;margin-left:auto;color:var(--text-muted);font-size:15px}.sk-badge{flex:none;padding:1px 7px;border-radius:999px;background:color-mix(in srgb,var(--info) 16%,transparent);color:var(--info);font-size:15px}.sk-decks{list-style:none;margin:0 0 6px 34px;padding:0}.study-app .sk-decks label{display:flex;flex-direction:row;align-items:center;gap:8px;margin:0;padding:4px 6px 4px 0;font-size:15px;color:var(--text-dim)}.sk-decks label span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sk-chips{display:flex;flex-wrap:wrap;gap:6px}.sk-chip{padding:2px 9px;border-radius:999px;background:color-mix(in srgb,var(--accent) 14%,transparent);color:var(--accent-soft);font-size:15px}.sk-chip.dim{background:var(--bg-sunken);color:var(--text-muted)}.sk-actions{display:flex;flex-wrap:wrap;gap:8px}.sk-note{margin:0}.study-app button.sk-mini{flex:none;padding:4px 10px;font-size:15px}.study-app button.sk-danger{color:var(--bad)}.sk-lint{display:flex;flex-direction:column;gap:10px;padding-top:10px;border-top:1px solid var(--line-soft)}.sk-lint-summary{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:15px}.sk-lint-summary strong{color:var(--warn)}.sk-filters{display:flex;flex-wrap:wrap;gap:6px}.study-app button.sk-filter{padding:3px 10px;border-radius:999px;font-size:15px}.study-app button.sk-filter.on{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--text)}.sk-lint-list{list-style:none;margin:0;padding:0;max-height:360px;overflow-y:auto}.sk-lint-list>li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 10px;padding:8px 2px;border-bottom:1px solid var(--line-soft)}.sk-lint-prompt{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:15px}.sk-lint-list small{grid-column:1;font-size:15px}.sk-issues{grid-column:2;grid-row:1 / span 2;display:flex;flex-wrap:wrap;justify-content:flex-end;align-content:center;gap:4px;max-width:260px}.sk-issue{padding:1px 7px;border-radius:999px;background:color-mix(in srgb,var(--warn) 14%,transparent);color:var(--warn);font-size:15px;white-space:nowrap}.sk-issue.i-membership-stem{background:color-mix(in srgb,var(--bad) 14%,transparent);color:var(--bad)}.sk-saved{display:flex;flex-direction:column;gap:12px}.sk-saved-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(280px,100%),1fr));gap:8px}.study-app button.sk-saved-item{display:flex;flex-direction:column;gap:4px;width:100%;padding:11px 14px;border:1px solid var(--line-soft);border-radius:var(--radius-sm);background:var(--bg-surface);text-align:left}.study-app button.sk-saved-item.on{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,var(--bg-surface))}.sk-saved-item small{font-size:15px}.sk-view{display:flex;flex-direction:column;gap:14px;padding:16px 18px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-surface)}.sk-view-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.sk-view-head h3{margin:0}.sk-overview{padding:12px 14px;border-left:3px solid var(--accent);border-radius:0 var(--radius-sm) var(--radius-sm) 0;background:var(--bg-sunken)}.sk-text summary{cursor:pointer;color:var(--text-dim);font-size:15px}.sk-tree{list-style:none;margin:0;padding:0}.sk-root{margin-top:10px}.sk-node{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 10px;padding:7px 0 7px calc(var(--depth, 0) * 18px);border-bottom:1px solid var(--line-soft)}.sk-node>.sk-tree{grid-column:1 / -1}.sk-node-body{display:flex;flex-direction:column;gap:2px;min-width:0}.sk-node-meaning{color:var(--text-dim);font-size:15px}.sk-relations{list-style:none;margin:10px 0 0;padding:0;display:flex;flex-direction:column;gap:6px;font-size:15px}.sk-relations li{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.sk-rel{padding:1px 8px;border-radius:999px;background:var(--bg-sunken);border:1px solid var(--line-soft);color:var(--text-muted);font-size:15px}.skc-stack{display:flex;flex-direction:column;gap:18px}.skc-section{display:flex;flex-direction:column;gap:8px}.skc-section-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.skc-section-head h4{margin:0}.skc-tabs{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}.study-app .skc-tabs button{padding:3px 10px;border-radius:999px;font-size:12px}.study-app .skc-tabs button.on{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--text)}.skc-seq-title{margin:0;color:var(--text-dim);font-size:13px}.skc{display:flex;flex-direction:column;gap:8px}.skc-toolbar{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.study-app .skc-toolbar button{min-width:30px;padding:4px 10px;font-size:12px}.study-app .skc-toolbar button.on{border-color:var(--accent);color:var(--accent-soft)}.skc-sep{width:1px;height:18px;margin:0 4px;background:var(--line)}.skc-hint{margin-left:auto;color:var(--text-faint);font-size:11.5px}.skc-body{position:relative}.skc-view{position:relative;height:min(62vh,560px);overflow:hidden;border:1px solid var(--line-soft);border-radius:var(--radius-sm);background:radial-gradient(circle,color-mix(in srgb,var(--text) 9%,transparent) 1px,transparent 1px) 0 0 / 22px 22px,var(--bg-sunken);cursor:grab;touch-action:none;user-select:none}.skc-view.is-panning{cursor:grabbing}.skc-view:focus-visible{outline:2px solid var(--accent-soft);outline-offset:2px}.skc-world{position:absolute;left:0;top:0;transform-origin:0 0}.skc-edges{position:absolute;inset:0;overflow:visible;pointer-events:none}.skc-mark-hollow{fill:var(--bg-sunken);stroke:var(--text-muted);stroke-width:1.3}.skc-mark-solid{fill:var(--text-muted);stroke:var(--text-muted);stroke-width:1}.skc-mark-line{fill:none;stroke:var(--text-muted);stroke-width:1.4}.skc-edge line{stroke:var(--text-muted);stroke-width:1.4;transition:opacity .15s var(--ease),stroke .15s var(--ease)}.skc-edge.k-dependency line,.skc-edge.k-realization line{stroke-dasharray:6 4}.skc-edge text{fill:var(--text-dim);font-size:11px;paint-order:stroke;stroke:var(--bg-sunken);stroke-width:4px;stroke-linejoin:round}.skc-edge.dim{opacity:.18}.skc-edge.lit line{stroke:var(--accent-soft);stroke-width:2}.study-app button.skc-class{position:absolute;display:flex;flex-direction:column;padding:0;border:1.5px solid var(--line-strong);border-radius:8px;background:var(--bg-surface);color:var(--text);text-align:left;cursor:grab;touch-action:none;box-shadow:var(--shadow-sm);transition:opacity .15s var(--ease),border-color .15s var(--ease),box-shadow .15s var(--ease)}.study-app button.skc-class:hover:not(:disabled){border-color:var(--accent-soft);background:var(--bg-surface)}.study-app button.skc-class.selected{border-color:var(--accent);box-shadow:var(--ring),var(--shadow-md)}.study-app button.skc-class.dim{opacity:.35}.skc-class-name{padding:7px 10px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--accent) 12%,transparent);border-radius:7px 7px 0 0;font-weight:600;font-size:13px;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.skc-class-attrs{display:flex;flex-direction:column;padding:8px 10px;gap:1px;font-size:11.5px;line-height:17px;color:var(--text-dim)}.skc-class-attrs span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.skc-class-attrs.empty{padding:0;min-height:12px}.skc-class-count{position:absolute;top:-9px;right:-8px;padding:0 6px;border-radius:999px;background:var(--accent);color:var(--accent-ink);font-size:10.5px;line-height:17px}.skc-detail{position:absolute;top:10px;right:10px;bottom:10px;width:min(290px,70%);display:flex;flex-direction:column;gap:8px;padding:14px;overflow-y:auto;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg-raised);box-shadow:var(--shadow-lg);animation:rise-in .18s var(--ease)}.skc-detail p{margin:0;font-size:13px;line-height:1.65}.skc-detail h5{margin:4px 0 0;color:var(--text-muted);font-size:11.5px;font-weight:600}.skc-detail-head{display:flex;align-items:center;gap:8px}.skc-detail-head strong{font-size:14.5px}.study-app button.skc-close{margin-left:auto;padding:0 8px;border:0;background:transparent;color:var(--text-muted);font-size:18px}.skc-attrs,.skc-rels{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px;font-size:12.5px}.skc-attrs li:before{content:"+ ";color:var(--text-muted)}.skc-rels li{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px}.skc-rels small{flex-basis:100%;color:var(--text-muted);font-size:11.5px}.skc-rel-type{color:var(--text-muted);font-size:11.5px}.study-app button.skc-link{padding:0;border:0;background:transparent;color:var(--accent-soft);text-decoration:underline;text-underline-offset:2px}.study-app button.skc-practice{margin-top:auto}.skc-legend{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 14px;color:var(--text-muted);font-size:11.5px}.skc-legend li{display:flex;align-items:center;gap:6px}.skc-legend i{width:22px;border-top:1.5px solid var(--text-muted)}.skc-legend .k-dependency i,.skc-legend .k-realization i{border-top-style:dashed}.skc-note{font-size:13px;color:var(--text-dim)}.sqc-lifeline{stroke:var(--line-strong);stroke-width:1.2;stroke-dasharray:4 4}.sqc-lifeline.lit{stroke:var(--accent-soft)}.sqc-msg{fill:none;stroke:var(--text-dim);stroke-width:1.5;transition:opacity .2s var(--ease),stroke .2s var(--ease)}.sqc-msg.k-return,.sqc-msg.k-async{stroke-dasharray:6 4}.sqc-msg.k-async{stroke-dasharray:2 3}.sqc-msg.current{stroke:var(--accent);stroke-width:2.4}.sqc-msg.future{opacity:.15}.study-app button.sqc-actor{position:absolute;padding:0 8px;border:1.5px solid var(--line-strong);border-radius:7px;background:var(--bg-surface);color:var(--text);font-size:12.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;cursor:default}.study-app button.sqc-actor.linked{cursor:pointer}.study-app button.sqc-actor.lit{border-color:var(--accent);box-shadow:var(--ring)}.study-app button.sqc-label{position:absolute;height:20px;padding:0 4px;border:0;background:transparent;color:var(--text-dim);font-size:11.5px;line-height:20px;text-align:center;overflow:visible;white-space:nowrap;cursor:pointer;transition:opacity .2s var(--ease)}.study-app button.sqc-label:hover:not(:disabled){background:transparent;color:var(--text)}.sqc-label b{display:inline-grid;place-items:center;width:16px;height:16px;margin-right:5px;border-radius:50%;background:var(--bg-surface);border:1px solid var(--line);font-size:10px;font-weight:600;vertical-align:1px}.sqc-label small{position:absolute;left:0;right:0;color:var(--text-faint);font-size:10.5px;font-style:italic;line-height:14px}.study-app button.sqc-label.current{color:var(--text);font-weight:600}.sqc-label.current b{border-color:var(--accent);background:var(--accent);color:var(--accent-ink)}.study-app button.sqc-label.future{opacity:.25}.sqc-caption{margin:0;min-height:22px;font-size:13px;color:var(--text-dim)}.sqc-caption b{color:var(--accent-soft)}.sqc-explanation{font-size:12.5px;color:var(--text-muted)}@media(prefers-reduced-motion:reduce){.skc-edge line,.sqc-msg,.study-app button.skc-class,.study-app button.sqc-label,.skc-detail{transition:none;animation:none}}.study-app button.skc-class{transition:left .28s var(--ease),top .28s var(--ease),opacity .15s var(--ease),border-color .15s var(--ease),box-shadow .15s var(--ease)}.skc-world.is-dragging .skc-class{transition:none!important}.skc-focus-chip{padding:2px 10px;border-radius:999px;background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--accent-soft);font-size:12px;white-space:nowrap}@media(prefers-reduced-motion:reduce){.study-app button.skc-class{transition:none}}.sk-group-bar{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.sk-seg{display:inline-flex;padding:2px;border:1px solid var(--line-soft);border-radius:999px;background:var(--bg-sunken)}.study-app .sk-seg button{padding:3px 11px;border:0;border-radius:999px;background:transparent;color:var(--text-muted);font-size:15px}.study-app .sk-seg button.on{background:var(--bg-raised);color:var(--text);box-shadow:var(--shadow-sm)}.study-app button.sk-ai{border-color:color-mix(in srgb,var(--accent) 55%,transparent);color:var(--accent-soft)}.sk-group-title{font-weight:600}.sk-badge.dim{background:var(--bg-sunken);color:var(--text-muted)}.sk-group.loose .sk-group-title{color:var(--text-dim);font-weight:500}.sk-group-desc{margin:-2px 10px 6px 34px;color:var(--text-muted);font-size:15px;line-height:1.5}.sk-topics.nested{max-height:none;margin:0 0 8px 22px;padding-left:8px;border-left:1px solid var(--line-soft)}.skc-change{display:flex;align-items:center;gap:10px;padding:8px 12px;border:1px solid color-mix(in srgb,var(--ok) 45%,transparent);border-radius:var(--radius-sm);background:color-mix(in srgb,var(--ok) 10%,transparent);font-size:13px;animation:rise-in .25s var(--ease)}.skc-change-dot{flex:none;width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px color-mix(in srgb,var(--ok) 25%,transparent)}.study-app .skc-change button{padding:3px 10px;font-size:12px}.study-app .skc-change button.skc-change-close{margin-left:auto;border:0;background:transparent;color:var(--text-muted);font-size:16px}.study-app button.skc-class.fresh{border-color:var(--ok);box-shadow:0 0 0 3px color-mix(in srgb,var(--ok) 30%,transparent),var(--shadow-md);animation:skc-fresh 1.6s var(--ease) 2}@keyframes skc-fresh{50%{box-shadow:0 0 0 7px color-mix(in srgb,var(--ok) 12%,transparent),var(--shadow-md)}}.skc-edge.fresh line{stroke:var(--ok);stroke-width:2.2}.skc-edge.fresh text{fill:var(--ok)}.skc-extend{display:flex;flex-direction:column;gap:6px;padding-top:8px;border-top:1px solid var(--line-soft)}.skc-extend-intents{display:flex;flex-wrap:wrap;gap:4px}.study-app .skc-extend-intents button{padding:2px 9px;border-radius:999px;font-size:11.5px}.study-app .skc-extend-intents button.on{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--text)}.skc-extend form,.sk-extend-row{display:flex;gap:6px}.study-app .skc-extend input,.study-app .sk-extend-row input{flex:1;min-width:0;padding:7px 10px;font-size:15px}.study-app .skc-extend form button,.study-app .sk-extend-row button{flex:none;padding:6px 12px;font-size:15px}.skc-extend small{font-size:11.5px}@media(prefers-reduced-motion:reduce){.study-app button.skc-class.fresh,.skc-change{animation:none}}.skc-search{display:flex;align-items:center;flex-wrap:wrap;gap:12px;font-size:12px}.skc-search input{min-width:0;width:min(100%,280px)}.skc-results{display:flex;gap:6px;flex-wrap:wrap;max-height:180px;overflow:auto}.skc-class-name,.skc-class-attrs{width:100%;box-sizing:border-box;min-width:0}.skc-view{background:var(--bg-sunken)}@media(max-width:600px){.study-app .skc-toolbar button,.study-app .skc-results button{min-height:44px}.skc-search input{width:100%}.skc-detail{position:static;width:auto;max-height:360px;margin-top:12px}}@media(prefers-reduced-motion:reduce){.skc *,.skc *:before,.skc *:after{animation:none!important;transition:none!important}}.skc-component{fill:color-mix(in srgb,var(--bg-surface) 70%,transparent);stroke:var(--line-soft);stroke-width:1}.skc:fullscreen,.skc-expanded{box-sizing:border-box;padding:20px;background:var(--bg-surface);overflow:auto}.skc-expanded{position:fixed;inset:0;z-index:10000}.skc:fullscreen .skc-view,.skc-expanded .skc-view{height:calc(100dvh - 200px);min-height:260px}.skc:fullscreen .skc-body,.skc-expanded .skc-body{flex:1}.skc-toolbar select{max-width:150px}.skc-class:focus-visible{outline:3px solid var(--accent);outline-offset:3px}@media(max-width:600px){.skc:fullscreen,.skc-expanded{padding:10px}.skc:fullscreen .skc-view,.skc-expanded .skc-view{height:calc(100dvh - 280px)}.skc-toolbar select{min-height:44px}}.skc-expanded[popover]{margin:0;width:auto;height:auto;max-width:none;max-height:none;border:0;color:var(--text)}.skc-expanded::backdrop{background:var(--bg-canvas)}.skc-component-title{fill:var(--text-dim);font-size:14px;font-weight:600}.skc-zoom-value{min-width:40px;text-align:center;color:var(--text-dim);font-size:12px;font-variant-numeric:tabular-nums}.skc-layout-menu{position:relative}.skc-layout-menu summary{cursor:pointer;padding:7px 10px;font-size:12px}.skc-layout-menu>div{position:absolute;top:100%;right:0;z-index:5;display:flex;flex-direction:column;gap:8px;padding:12px;background:var(--bg-raised);border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow-md);width:170px}.study-app button.skc-minimap{position:absolute;right:12px;bottom:12px;width:140px;height:88px;padding:4px;z-index:2;border:1px solid var(--line-strong);border-radius:6px;background:var(--bg-surface);opacity:.94;cursor:crosshair}.skc-minimap svg{width:100%;height:100%;overflow:hidden}.skc-minimap rect{fill:var(--text-muted)}.skc-minimap .skc-minimap-window{fill:color-mix(in srgb,var(--accent) 18%,transparent);stroke:var(--accent-soft);stroke-width:2;vector-effect:non-scaling-stroke}.skc-search select{max-width:min(100%,250px);min-width:0}.skc-class-name{font-size:14px;line-height:18px}.skc-class-attrs{font-size:12px}@media(max-width:600px){.skc-hint{display:none}.skc-search{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px}.skc-search input,.skc-search select{width:100%;max-width:100%;height:44px}.skc-layout-menu summary{min-height:44px;display:flex;align-items:center;box-sizing:border-box}.skc-view{height:min(65dvh,600px);min-height:300px}}.sqc-message-text{display:inline-block;max-width:calc(100% - 25px);overflow:hidden;text-overflow:ellipsis;vertical-align:bottom}.sqc-label small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.skc-narrow .skc-hint{display:none}.skc-narrow .skc-search{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px}.skc-narrow .skc-search input,.skc-narrow .skc-search select{width:100%;max-width:100%;height:44px}.skc-narrow .skc-detail{position:static;width:auto;max-height:360px;margin-top:12px}.study-app .skc-narrow .skc-toolbar button{min-height:44px}.skc-narrow .skc-layout-menu summary{min-height:44px;display:flex;align-items:center;box-sizing:border-box}.study-app button.skc-class{transition:opacity .15s var(--ease),border-color .15s var(--ease),box-shadow .15s var(--ease)}.skc-attributes-toggle{display:flex;align-items:center;gap:8px;font-size:12px}.skc-attributes-toggle input{width:auto}.skc-compact .skc-class-name{border-bottom:0;border-radius:6px}.skc-focus-chip{max-width:100%;white-space:normal;overflow-wrap:anywhere}.study-app .skc-narrow button.skc-minimap{width:100px;height:62px;right:8px;bottom:8px}.skc-edge path{fill:none;stroke:var(--text-muted);stroke-width:1.4}.skc-edge.k-dependency path,.skc-edge.k-realization path{stroke-dasharray:6 4}.skc-edge.lit path{stroke:var(--accent-soft);stroke-width:2}.sk-view-switch{align-self:flex-start;margin:4px 0 6px}.spine{min-width:0}.spine-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px;font-size:15px;color:var(--text-muted)}.spine-steps{display:inline-flex;gap:4px}.study-app .spine-steps button{width:30px;height:30px;padding:0;border-radius:999px;border-color:var(--line);background:transparent;color:var(--text-dim)}.spine-scroll{mask-image:linear-gradient(to right,#000 calc(100% - 40px),transparent);overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x proximity;scroll-padding-left:4px;padding:6px 4px 22px;scrollbar-width:thin}.spine-scroll:focus-visible{outline:2px solid var(--accent-soft);outline-offset:2px;border-radius:8px}.spine-track{position:relative;display:grid;grid-auto-flow:column;grid-auto-columns:minmax(250px,290px);gap:0 40px;width:max-content;margin:0;padding:0;list-style:none}.spine-track:before{content:"";position:absolute;top:19px;left:20px;right:20px;height:2px;background:var(--line-strong)}.spine-station{position:relative;min-width:0;scroll-snap-align:start}.spine-stop{display:flex;align-items:flex-start;gap:12px}.spine-marker{position:relative;z-index:1;display:grid;place-items:center;flex-shrink:0;width:40px;height:40px;border-radius:50%;background:var(--bg-canvas);box-shadow:inset 0 0 0 2px var(--text-dim);font-family:var(--font-display);font-size:16px;font-weight:650;font-variant-numeric:tabular-nums}.spine-station:first-child .spine-marker{background:var(--text);box-shadow:none;color:var(--bg-canvas)}.spine-stop-text{min-width:0;padding-top:8px}.spine-stop-text h4{display:inline-block;margin:0 0 6px -6px;padding:0 10px 0 6px;background:var(--bg-surface);font-family:var(--font-display);font-size:18px;font-weight:650;letter-spacing:-.01em;line-height:1.35}.spine-stop-text p{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:0 0 6px;font-size:15px;line-height:1.6;color:var(--text-muted)}.spine-branch{margin:12px 0 0 19px;padding:0 0 0 20px;border-left:2px solid var(--line);list-style:none}.spine-branch .spine-branch{margin:4px 0 2px 2px;padding-left:16px;border-left-width:1px}.spine-point{position:relative;padding:7px 0}.spine-point:before{content:"";position:absolute;top:17px;left:-20px;width:12px;height:2px;background:var(--line)}.spine-branch .spine-branch>.spine-point:before{left:-16px;width:10px;height:1px}.spine-point-body{display:flex;flex-direction:column;gap:2px;min-width:0}.spine-point-body strong{font-size:15px;font-weight:600;line-height:1.5}.spine-point.d2 .spine-point-body strong,.spine-point.d3 .spine-point-body strong{font-size:15px;font-weight:550;color:var(--text-dim)}.spine-meaning{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:15px;line-height:1.55;color:var(--text-muted)}.spine-contrast{font-size:15px;color:var(--warn)}.study-app .spine-practice{align-self:flex-start;margin-top:2px;font-size:15px;color:var(--text-muted)}@media(hover:hover){.spine-point-body .spine-practice{opacity:0;transition:opacity .15s var(--ease)}.spine-point-body:hover .spine-practice,.spine-point-body:focus-within .spine-practice{opacity:1}}@container study (max-width: 640px){.spine-track{grid-auto-flow:row;grid-auto-columns:auto;gap:22px;width:auto}.spine-track:before{inset:20px auto 20px 19px;width:2px;height:auto}.spine-steps{display:none}.spine-scroll{mask-image:none}.spine-branch{margin-left:19px}}.workflow-page{container-type:inline-size;min-width:0;max-width:1160px;margin-inline:auto}.workflow-page :is(button,input,select,textarea){font:inherit}.workflow-page button{min-height:36px}.workflow-page :is(input:not([type=checkbox]):not([type=radio]),select,textarea){width:100%;min-width:0;box-sizing:border-box;padding:10px 12px;color:var(--text);background:var(--bg-sunken);border:1px solid var(--line-strong);border-radius:var(--radius-sm)}.workflow-page textarea{resize:vertical;line-height:1.65}.workflow-page :is(input,select,textarea,button):focus-visible{outline:2px solid var(--accent-soft);outline-offset:3px}.workflow-page :is(input[type=checkbox],input[type=radio]){flex:0 0 auto;width:17px;height:17px;accent-color:var(--accent)}.workflow-page fieldset{border:0;margin:0;padding:0;min-width:0}.workflow-page button:disabled{cursor:not-allowed}.wf-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin:24px 0 30px}.wf-heading>div{min-width:0}.wf-heading h1{margin:4px 0 12px;line-height:1.3;overflow-wrap:anywhere}.wf-heading p{max-width:720px;margin:0;line-height:1.7}.wf-heading>button{flex-shrink:0}.wf-eyebrow{font-size:15px;letter-spacing:.08em;font-weight:650;color:var(--text-muted)}.wf-topline{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.wf-section-head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin:30px 0 15px}.wf-section-head h2{font-size:18px;margin:0}.wf-section-head h2>span{margin-left:8px;font-size:15px;font-weight:400}.wf-actions{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.wf-actions>button{white-space:normal}.wf-template-list{border-top:1px solid var(--line)}.wf-template-row{display:grid;grid-template-columns:32px minmax(0,1fr) auto;gap:18px;padding:23px 0;border-bottom:1px solid var(--line);align-items:center}.wf-row-number{align-self:start;padding-top:3px;font-size:15px;color:var(--text-faint);font-variant-numeric:tabular-nums}.wf-template-copy h3{margin:0 0 7px;font-size:19px;line-height:1.4;overflow-wrap:anywhere}.wf-template-copy p{color:var(--text-muted);font-size:15px;line-height:1.6;margin:0;overflow-wrap:anywhere}.wf-route-preview{display:flex;flex-wrap:wrap;gap:4px 8px;margin:12px 0 0;font-size:15px;color:var(--text-dim);line-height:1.8}.wf-route-preview span:not(:last-child):after{content:"\2192";margin-left:8px;color:var(--text-faint)}.wf-suggested{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:22px;margin:24px 0;background:var(--bg-surface);border:1px dashed var(--line-strong);border-radius:var(--radius-sm)}.wf-suggested>div{min-width:0}.wf-suggested h3{margin:7px 0;font-size:18px}.wf-suggested p{margin:0;font-size:15px;line-height:1.65}.wf-suggested>button{flex-shrink:0}.wf-chat,.wf-readings,.wf-history{border-block:1px solid var(--line);padding:15px 0;margin-top:22px}.wf-chat>summary,.wf-readings>summary,.wf-history>summary{cursor:pointer;font-size:15px;font-weight:600;line-height:1.65}.wf-chat>label{display:grid;gap:8px;margin:18px 0 12px;font-size:15px;color:var(--text-dim)}.wf-chat>p{margin-bottom:0}.wf-session-list{list-style:none;padding:0;margin:0}.wf-session-list>li{display:flex;justify-content:space-between;flex-wrap:wrap;gap:15px;padding:18px 0;border-bottom:1px solid var(--line)}.wf-session-list>li>div:first-child{flex:1;min-width:160px}.wf-session-list strong{font-size:15px;overflow-wrap:anywhere}.wf-session-list p{margin:6px 0;color:var(--text-dim);font-size:15px;line-height:1.5;overflow-wrap:anywhere}.wf-empty{padding:20px 0;font-size:15px;line-height:1.75}.wf-error{padding:12px 15px;color:var(--bad);border:1px solid var(--bad);border-radius:var(--radius-sm);font-size:15px;overflow-wrap:anywhere;line-height:1.65}.wf-error p{margin:0 0 8px}.wf-notice{padding:14px 17px;border-left:3px solid var(--info);background:var(--bg-surface);line-height:1.75;font-size:15px;margin-block:18px;overflow-wrap:anywhere}.wf-notice p{margin:0 0 10px}.wf-notice p:last-child{margin-bottom:0}.wf-notice details{margin-bottom:10px}.wf-notice h3{margin:0 0 10px;font-size:16px}.wf-status{padding:8px 0;color:var(--ok);font-size:15px;line-height:1.65}.wf-confirm{display:flex;flex-wrap:wrap;gap:9px;align-items:center;padding:13px 15px;background:var(--bg-sunken);border:1px solid var(--line-strong);border-radius:var(--radius-sm);font-size:15px;grid-column:1 / -1;width:100%;box-sizing:border-box}.wf-confirm span{flex-basis:100%;line-height:1.7}.workflow-page .wf-danger{color:var(--bad)}.wf-fields{display:grid;gap:18px}.wf-fields label,.wf-output-label{display:grid;gap:8px;color:var(--text-dim);font-size:15px;line-height:1.5}.wf-fields>label{margin:0}.wf-fields p{margin:0}.wf-step-list{list-style:none;padding:0;margin:0}.wf-step-editor{border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:10px;background:var(--bg-surface)}.wf-step-editor.is-open{border-color:var(--line-strong)}.wf-step-head{display:flex;align-items:center;gap:10px;padding:13px;min-width:0}.wf-drag{cursor:grab;color:var(--text-muted);touch-action:none;user-select:none;font-size:21px;padding:4px}.wf-step-number{color:var(--text-muted);font-size:15px;font-variant-numeric:tabular-nums}.workflow-page .wf-step-toggle{flex:1;min-width:0;padding:2px 4px;display:grid;gap:5px;background:transparent;border:0;text-align:left}.wf-step-toggle strong{font-size:15px;overflow-wrap:anywhere}.wf-step-toggle small{color:var(--text-muted);font-size:15px;font-weight:400}.wf-step-move{display:flex;gap:5px;flex:0 0 auto}.wf-step-move button{padding:4px 10px}.wf-step-body{padding:4px 20px 20px}.wf-step-body>.wf-danger{margin-top:16px}.wf-step-body>.wf-confirm{margin-top:12px}.wf-branch-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.wf-components{padding:16px 0}.wf-components h3{font-size:15px;font-weight:500;color:var(--text-muted);margin:0 0 12px}.wf-component-options{display:flex;gap:8px;flex-wrap:wrap}.wf-component-options button{font-size:15px}.wf-savebar{display:flex;gap:15px;align-items:center;flex-wrap:wrap;padding:18px 0;border-block:1px solid var(--line);margin-top:8px}.wf-savebar>span{flex:1;min-width:160px;line-height:1.65}.wf-start form{display:grid;gap:24px}.wf-start form>.primary{justify-self:start}.wf-start .wf-route-preview{margin:0;padding-block:12px;border-block:1px solid var(--line)}.wf-scope{margin-top:5px}.wf-scope summary{cursor:pointer;font-size:15px;line-height:1.7}.wf-topic-groups{display:flex;flex-wrap:wrap;gap:8px;padding:15px 0}.wf-topic-groups label{display:flex;flex-direction:row;align-items:center;gap:7px;margin:0;border:1px solid var(--line);border-radius:var(--radius-sm);padding:8px 10px;font-size:15px;cursor:pointer}.wf-topic-groups small{color:var(--text-muted)}.wf-topic-list{max-height:360px;overflow-y:auto;margin-top:12px;border:1px solid var(--line);border-radius:var(--radius-sm);scrollbar-gutter:stable}.wf-topic-list label{display:grid;grid-template-columns:18px minmax(0,1fr) auto;align-items:center;gap:12px;margin:0;padding:14px 16px;border-bottom:1px solid var(--line);cursor:pointer;text-align:left}.wf-topic-list label:last-child{border-bottom:0}.wf-topic-list label:hover,.wf-topic-list label:focus-within{background:var(--bg-surface)}.wf-topic-list label:has(input:checked),.wf-topic-groups label:has(input:checked){background:var(--bg-selected)}.wf-topic-list input,.wf-topic-groups input{margin:0}.wf-topic-list label>span{min-width:0;overflow-wrap:anywhere;font-size:15px;font-weight:550;color:var(--text)}.wf-topic-list small{color:var(--text-muted);font-size:15px;font-weight:400}.wf-topic-list span>small{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:4px;line-height:1.5}.wf-topic-list label>small{white-space:nowrap;font-variant-numeric:tabular-nums;align-self:start;padding-top:2px}.wf-scope>p{padding-block:8px 12px}.wf-skeleton-shortcut{margin-top:-8px}.wf-skeleton-shortcut>p{margin-top:10px;line-height:1.7}.wf-portal-route{list-style:none;display:flex;gap:0;padding:0 0 5px;margin:0 0 26px;border-top:1px solid var(--line);overflow-x:auto}.wf-portal-route li{position:relative;display:grid;align-content:start;flex:1 0 105px;gap:7px;padding:14px 12px 10px;border-top:2px solid transparent;margin-top:-1px;min-width:0}.wf-portal-route li:first-child{padding-left:0}.wf-portal-route li.is-current{border-top-color:var(--accent)}.wf-portal-route li>span{color:var(--text-faint);font-size:15px;font-variant-numeric:tabular-nums}.wf-portal-route strong{font-size:15px;font-weight:500;color:var(--text-muted);overflow-wrap:anywhere}.wf-portal-route .is-current :is(strong,span){color:var(--text)}.wf-portal-route small{color:var(--text-muted);font-size:15px}.wf-portal-route .wf-route-link{display:grid;align-content:start;gap:7px;width:100%;min-height:0;margin:0;padding:0;border:0;border-radius:0;background:transparent;color:inherit;font:inherit;text-align:left;cursor:pointer;box-shadow:none}.wf-portal-route .wf-route-link:hover:not(:disabled) strong,.wf-portal-route .wf-route-link:focus-visible strong{color:var(--text);text-decoration:underline;text-decoration-color:var(--accent-soft);text-underline-offset:4px}.wf-portal-route li.is-reachable:hover{border-top-color:var(--line-strong)}.wf-portal-route .wf-route-resume{color:var(--accent);font-weight:600}.wf-activity{min-width:0}.wf-portal .wf-activity{max-width:920px;margin-inline:auto}.wf-activity>.wf-section-head{margin-top:0}.wf-instructions{color:var(--text-dim);font-size:15px;line-height:1.85;margin-bottom:20px}.wf-lesson{padding-block:8px 22px;font-size:15px;line-height:1.85;max-width:850px}.wf-readings article{padding:17px 0;border-bottom:1px solid var(--line-soft);font-size:15px;line-height:1.8}.wf-readings h4{font-size:15px;margin-top:0}.wf-readings blockquote{margin:12px 0 0;border-left:2px solid var(--line-strong);padding-left:14px;color:var(--text-muted)}.wf-readings cite{font-size:15px;font-style:normal}.wf-skeleton{margin-block:20px;min-width:0}.wf-skeleton>h3{font-size:15px}.wf-skeleton>.md{font-size:15px;line-height:1.8}.wf-output-label{margin-top:26px;font-size:15px;font-weight:500}.wf-output-label textarea{font-weight:400}.wf-output-save{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:12px}.wf-output-save>small{flex:1;min-width:170px;line-height:1.6}.wf-recall-reference{margin-top:20px}.wf-recall-reference>div{padding-top:15px}.wf-advance{margin-top:28px;padding-top:16px;border-top:1px solid var(--line-strong)}.wf-advance>p{line-height:1.7}.wf-branch-hint{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:13px;color:var(--text-muted);font-size:15px;line-height:1.8}.wf-history{margin-top:28px}.wf-history>ol{list-style:none;padding:0}.wf-history li{padding:16px 0;border-bottom:1px solid var(--line-soft);font-size:15px;line-height:1.8}.wf-history li:last-child{border-bottom:0;padding-bottom:4px}.wf-history li>div:first-child{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.wf-history time{margin-left:auto;color:var(--text-muted);font-size:15px}.wf-outcome{color:var(--text-muted);font-size:15px}.wf-outcome.done{color:var(--ok)}.wf-outcome.needs_work{color:var(--warn)}.wf-completed{border-left:3px solid var(--ok);padding:6px 0 6px 22px;margin-block:30px}.wf-completed h2{font-size:22px}.wf-completed p{font-size:15px;line-height:1.7}.wf-practice-intro{padding:15px 0}.wf-practice-intro p{line-height:1.7}.wf-practice-intro strong{font-size:17px}.wf-practice-progress{height:4px;max-width:420px;margin:4px 0 14px;border-radius:2px;background:var(--line-soft);overflow:hidden}.wf-practice-progress>span{display:block;height:100%;background:var(--accent);transition:width .3s var(--ease-out, ease)}.workflow-page .md{overflow-wrap:anywhere}.workflow-page .md :is(pre,table){max-width:100%;overflow-x:auto}.wf-teaching{margin-top:26px;padding:28px 38px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg-surface);min-width:0}.wf-teaching-heading{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:24px;padding-bottom:18px;border-bottom:1px solid var(--line)}.wf-teaching-heading h3{margin:6px 0 0;font-size:20px;font-weight:600}.wf-reading-label{color:var(--text-faint);font-size:15px}.wf-teaching-empty{padding:6px 0 18px}.wf-teaching-empty p{max-width:640px;font-size:16px;line-height:1.9}.wf-teaching-empty p.muted{font-size:15px}.wf-teaching-empty button{margin-top:10px}.wf-prose{min-width:0;font-size:16px;line-height:1.95;overflow-wrap:anywhere}.wf-prose>:first-child{margin-top:0}.wf-prose>:last-child{margin-bottom:0}.wf-prose :is(h1,h2,h3,h4,h5,h6){line-height:1.5;margin:1.6em 0 .7em;color:var(--text)}.wf-prose h1{font-size:27px}.wf-prose h2{font-size:22px}.wf-prose h3{font-size:19px}.wf-prose :is(h4,h5,h6){font-size:16px}.wf-prose p{margin-block:1em}.wf-prose :is(ul,ol){padding-left:1.5em}.wf-prose li{margin-block:.45em}.wf-prose blockquote{margin:24px 0;padding:3px 0 3px 20px;border-left:3px solid var(--accent-soft);color:var(--text-dim)}.wf-prose pre{max-width:100%;overflow-x:auto;padding:16px;background:var(--bg-sunken);border:1px solid var(--line);border-radius:var(--radius-sm);font-size:15px;line-height:1.7}.wf-prose :not(pre)>code{background:var(--bg-sunken);border-radius:3px;padding:2px 5px;font-size:max(15px,.9em)}.wf-prose table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;margin-block:22px;font-size:15px}.wf-prose :is(th,td){border:1px solid var(--line);padding:10px 13px;text-align:left}.wf-prose th{background:var(--bg-sunken);font-weight:600}.wf-prose math{max-width:100%;font-size:1.12em;overflow-x:auto}.wf-prose img{max-width:100%;height:auto}.wf-prose hr{margin-block:28px;border:0;border-top:1px solid var(--line)}.wf-teaching-progress{display:flex;gap:12px;align-items:flex-start;padding:17px 0;margin-block:10px;font-size:15px;line-height:1.65}.wf-progress-mark{flex-shrink:0;width:8px;height:8px;margin-top:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--bg-selected)}.wf-teaching-progress p{margin:4px 0 0;color:var(--text-muted)}.wf-model-hint{color:var(--text-muted);font-size:15px;line-height:1.75}.wf-teaching-tools{margin-top:30px;padding-top:19px;border-top:1px solid var(--line)}.wf-help-row{display:flex;align-items:center;gap:15px;flex-wrap:wrap}.wf-help-row>span{font-size:15px;color:var(--text-dim)}.wf-quick-choices{display:flex;flex-wrap:wrap;gap:8px}.workflow-page .wf-quick-choices button{padding:8px 13px;border-radius:999px;font-size:15px;line-height:1.5}.wf-quick-choices button[aria-pressed=true]{background:var(--bg-selected);border-color:var(--accent-soft);color:var(--text)}.wf-improve{margin-top:17px}.wf-improve>summary,.wf-teaching-custom>summary{cursor:pointer;font-size:15px;color:var(--text-muted);line-height:1.8}.workflow-page .wf-undo{margin-top:12px;font-size:15px}.wf-teaching-help{border-top:1px solid var(--line);margin-top:26px;padding-top:10px}.wf-teaching-help>h4{color:var(--text-muted);font-size:15px;font-weight:500;margin:12px 0}.wf-teaching-help>details{padding-block:15px;border-bottom:1px solid var(--line)}.wf-teaching-help summary{cursor:pointer;font-size:15px;font-weight:600;line-height:1.7}.wf-teaching-help details[open]>summary{margin-bottom:18px}.wf-teaching-custom{margin-top:18px}.wf-teaching-custom label{display:grid;gap:8px;font-size:15px;margin-block:15px 10px}.wf-teaching-custom button{font-size:15px}.wf-learner-choices,.wf-recall-invitation{padding:24px 0 28px;border-block:1px solid var(--line);margin-block:25px}.wf-learner-choices h3,.wf-recall-invitation h3{font-size:21px;line-height:1.5;margin:0 0 9px}.wf-learner-choices p,.wf-recall-invitation p{font-size:15px;line-height:1.8;margin:8px 0 20px}.wf-learner-choices>small,.wf-recall-invitation>small{display:block;font-size:15px;line-height:1.8;margin-top:15px}.wf-notes{margin-top:25px;padding-block:17px;border-block:1px solid var(--line)}.wf-notes>summary{cursor:pointer;font-size:15px;font-weight:500;line-height:1.8}.wf-notes>summary>span{margin-left:10px;color:var(--text-faint);font-size:15px;font-weight:400}.wf-notes .wf-output-label{margin-top:20px}.wf-continue-heading{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;padding-block:7px}.wf-continue-heading strong{font-size:15px;font-weight:500}.wf-continue-heading p{margin:7px 0 0;line-height:1.7}.wf-other-path{margin-top:15px}:is(.wf-chat,.wf-readings,.wf-history,.wf-notes,.wf-learner-choices,.wf-recall-invitation):has(+:is(.wf-chat,.wf-readings,.wf-history,.wf-notes,.wf-teaching-tools,.wf-advance)){margin-bottom:0}:is(.wf-chat,.wf-readings,.wf-history,.wf-notes,.wf-learner-choices,.wf-recall-invitation)+:is(.wf-chat,.wf-readings,.wf-history,.wf-notes,.wf-teaching-tools,.wf-advance){margin-top:-1px}.wf-other-path>summary{cursor:pointer;color:var(--text-muted);font-size:15px;line-height:1.8}.wf-other-path .wf-actions{margin-top:15px}.wf-other-path p{line-height:1.75}.wf-saved-teaching{margin-block:30px}.wf-saved-teaching>h2{font-size:19px;margin-bottom:18px}.wf-saved-teaching>details{border-top:1px solid var(--line);padding-block:18px}.wf-saved-teaching summary{cursor:pointer;font-size:15px;font-weight:600}.wf-saved-teaching details[open]>summary{margin-bottom:25px}@container (max-width: 700px){.wf-template-row{grid-template-columns:26px minmax(0,1fr);gap:10px}.wf-template-row>.wf-actions{grid-column:2}.wf-suggested{flex-direction:column;align-items:flex-start;gap:16px}.wf-heading{margin-bottom:22px}}@container (max-width: 430px){.wf-teaching{padding:21px 17px}.wf-teaching-heading{margin-bottom:20px}.wf-teaching-heading h3{font-size:18px}.wf-reading-label{display:none}.wf-prose{font-size:15px;line-height:1.9}.wf-prose h1{font-size:23px}.wf-prose h2{font-size:20px}.wf-prose h3{font-size:17px}.wf-prose blockquote{padding-left:13px}.wf-help-row{align-items:flex-start;gap:10px}.wf-help-row>span{flex-basis:100%}.wf-learner-choices h3,.wf-recall-invitation h3{font-size:19px}.wf-continue-heading>.primary{width:100%}.wf-notes>summary>span{display:block;margin-left:0}.wf-heading{flex-wrap:wrap;gap:12px}.wf-heading h1{font-size:25px}.wf-section-head h2{font-size:16px}.wf-suggested{padding:16px}.wf-template-row{grid-template-columns:minmax(0,1fr)}.wf-template-row>.wf-row-number{display:none}.wf-template-row>.wf-actions{grid-column:1}.wf-step-head{padding:10px 8px;gap:5px}.wf-step-body{padding:6px 12px 15px}.wf-step-move button{padding-inline:8px}.wf-branch-fields{grid-template-columns:1fr}.wf-history time{flex-basis:100%;margin-left:0}.wf-confirm button,.wf-notice .wf-actions button{flex:1}}.wf-quick{padding:18px 0 36px;margin-bottom:30px;border-bottom:1px solid var(--line-soft)}.wf-quick h1{margin:6px 0 8px;font-size:clamp(28px,3.4cqi,38px);letter-spacing:-.02em}.wf-quick>p.muted{max-width:620px;margin:0}.wf-quick-row{display:flex;gap:10px;max-width:780px;margin-top:20px}.wf-quick-row input{flex:1;min-width:0;padding:14px 16px;font-size:16px}.wf-quick-row .primary{flex:none;padding:0 22px;white-space:nowrap}.wf-quick-suggest{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:14px}.wf-quick-option{display:flex;flex-direction:row;flex-wrap:wrap;align-items:center;gap:4px 10px;width:fit-content;max-width:100%;margin:18px 0 0;font-size:15px;cursor:pointer}.wf-quick-option input{width:17px;height:17px;margin:0;accent-color:var(--accent)}.wf-quick-option .muted{font-size:15px}.wf-spine-peek{margin:0 0 22px;padding:12px 16px;border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--bg-surface)}.wf-spine-peek>summary{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;cursor:pointer;font-weight:600}.wf-spine-peek>summary .muted{font-weight:500}.wf-spine-peek[open]>summary{margin-bottom:12px}.wf-spine-peek[open]>summary .muted{display:none}.wf-spine-status{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;margin:0 0 22px;font-size:15px}.wf-pulse{display:inline-block;flex:none;width:8px;height:8px;margin-right:10px;vertical-align:middle;border-radius:50%;background:var(--accent);animation:wf-pulse 1.4s ease-in-out infinite}.wf-spine-status .wf-pulse{margin-right:0}@media(prefers-reduced-motion:reduce){.wf-pulse{animation:none}}.wf-quick-hint{max-width:680px;margin:14px 0 0;padding:10px 14px;border-left:3px solid var(--warn);background:var(--bg-surface);font-size:15px;line-height:1.7}.wf-quick-resume{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;margin:16px 0 0;font-size:15px}.wf-quick-resume .link-btn{font-weight:600;text-align:left}.wf-quick-status{display:flex;align-items:center;margin:14px 0 0;font-size:15px;color:var(--text-dim)}.wf-scope-line{margin:6px 0 0;font-size:15px;color:var(--text-dim);overflow-wrap:anywhere}.wf-scope-line>span:first-child{color:var(--text-muted)}.wf-scope-line.is-fallback>span:first-child{color:var(--warn)}.wf-remedy{margin:4px 0 30px;padding:16px 0 6px 20px;border-left:3px solid var(--accent)}.wf-remedy .wf-eyebrow{margin:0 0 8px;color:var(--accent)}.wf-remedy-gaps{margin:0 0 14px;padding-left:1.2em;font-size:15px;line-height:1.7;color:var(--text)}.wf-remedy-status{display:flex;align-items:center;margin:6px 0 12px;font-size:15px;color:var(--text-dim)}.wf-retell.is-stale{opacity:.78;border-style:dashed}.wf-retell.is-stale .wf-eyebrow{color:var(--text-faint)}.wf-heading{scroll-margin-top:72px}.wf-material{margin-block:6px 18px}.wf-material-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;margin:0 0 4px}.wf-material-head .wf-eyebrow{margin:0}.wf-material-head time{font-size:15px;color:var(--text-faint)}.wf-material-history{margin:8px 0 18px;font-size:15px}.wf-material-history>summary{cursor:pointer;color:var(--text-muted);line-height:1.8}.wf-material-history ol{margin:10px 0 6px;padding:0;list-style:none}.wf-material-history li{padding:10px 0;border-top:1px solid var(--line-soft)}.wf-material-history-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 14px;color:var(--text-muted)}.wf-material-history li details>summary{cursor:pointer;margin-top:4px;color:var(--text-dim);overflow-wrap:anywhere}.wf-skeleton-maker{padding:18px 0 8px}.wf-skeleton-maker h3{margin:0 0 6px;font-size:19px}.wf-skeleton-maker>p{margin:0 0 14px}.wf-skeleton-maker .wf-error{margin-bottom:12px}.wf-advanced{margin-top:40px;padding-top:16px;border-top:1px solid var(--line-soft)}.wf-advanced>summary{cursor:pointer;color:var(--text-muted)}.wf-advanced>summary:hover{color:var(--text)}.wf-advanced[open]>summary{margin-bottom:18px}.wf-retell{margin:18px 0;padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-surface);animation:page-in .35s var(--ease-out) backwards}.wf-retell-note{margin:6px 0 12px}.wf-retell-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(240px,100%),1fr));gap:12px 28px}.wf-retell h4{margin:0 0 6px;color:var(--ok)}.wf-retell .is-missing h4{color:var(--warn)}.wf-retell ul{margin:0;padding-left:1.2em}.wf-retell li{margin:4px 0;line-height:1.6}.wf-retell-question{margin:14px 0 8px;font-weight:600}.wf-primary-pair{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:10px 20px}@container study (max-width: 640px){.wf-quick-row{flex-direction:column}.wf-quick-row .primary{padding:12px 20px}}@keyframes wf-pulse{0%,to{opacity:.35;transform:scale(.8)}50%{opacity:1;transform:scale(1)}}.study-app .study-language-switch{display:flex;gap:4px;padding:5px 8px;margin:4px 0 8px}.study-app .study-language-switch button{flex:1;font-size:13px;padding:6px 8px;min-width:0}.study-app .study-language-switch button[aria-pressed=true]{color:var(--accent);border-color:currentColor}.study-app .sidebar.is-narrow .study-language-switch{flex-direction:column;padding:3px}.study-app[lang=en] .nav{white-space:normal;line-height:1.35}html,body,#root{margin:0;min-height:100%;font-family:system-ui,Microsoft YaHei,sans-serif}#root{height:100dvh;display:flex;flex-direction:column}#root>.study-app{flex:1;min-height:0;height:auto}.public-demo-banner{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:9px 18px;background:#292721;color:#ece5d9;border-bottom:1px solid #51483c;font-size:13px;line-height:1.6;flex-shrink:0}.public-demo-banner>div{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.public-demo-banner span{color:#c1b7a6}.public-demo-banner button,.public-demo-dialog button{font:inherit;padding:5px 12px;cursor:pointer;border:1px solid #837662;border-radius:4px;background:transparent;color:inherit;white-space:nowrap}.public-demo-banner button:focus-visible,.public-demo-dialog button:focus-visible{outline:2px solid #c99372;outline-offset:3px}.public-demo-dialog{max-width:480px;width:calc(100% - 40px);box-sizing:border-box;padding:28px;background:#28251f;color:#eee6d8;border:1px solid #81715d;border-radius:5px}.public-demo-dialog::backdrop{background:#0009}.public-demo-dialog button+button{margin-left:12px}@media(max-width:720px){.public-demo-banner{font-size:12px;padding:7px 12px}.public-demo-banner>div{gap:2px}.public-demo-banner span{font-size:11px}}