:root{--bg:#ECEFF3;--surface:#FFFFFF;--sunk:#F5F6F9;--ink:#17202D;--muted:#586374;--line:#D5DAE2;--brass:#946419;--brass-ink:#FFFFFF;--brass-soft:#F4E8D1;--garnet:#8C2338;--ok:#2C7A4D;--ok-soft:#DDF0E4;--warn:#A8521A;--display:"Bodoni Moda","Didot","Bodoni 72",Georgia,serif;--body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;--mono:"IBM Plex Mono",ui-monospace,"SF Mono",Menlo,monospace;--r:10px}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0E1218;--surface:#161B24;--sunk:#1C222D;--ink:#E6E9EF;--muted:#9AA3B3;--line:#2B323E;--brass:#D4A64F;--brass-ink:#1A1408;--brass-soft:#3A2E17;--garnet:#D9667F;--ok:#5DBA85;--ok-soft:#18321F;--warn:#E08A4C;color-scheme:dark}}:root[data-theme=dark]{--bg:#0E1218;--surface:#161B24;--sunk:#1C222D;--ink:#E6E9EF;--muted:#9AA3B3;--line:#2B323E;--brass:#D4A64F;--brass-ink:#1A1408;--brass-soft:#3A2E17;--garnet:#D9667F;--ok:#5DBA85;--ok-soft:#18321F;--warn:#E08A4C;color-scheme:dark}*{box-sizing:border-box}body,html{min-height:100%}body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.55}button,input,select,textarea{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--brass);outline-offset:2px}h1,h2,h3{text-wrap:balance;margin:0}.app{display:grid;grid-template-columns:232px minmax(0,1fr);min-height:100vh}.rail{background:var(--surface);border-right:1px solid var(--line);padding-block:22px;padding-left:max(18px,env(safe-area-inset-left,0px));padding-right:18px;position:-webkit-sticky;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:22px}.brand{display:flex;gap:10px;align-items:center}.brand svg{flex:none}.brand b{font-family:var(--display);font-size:19px;line-height:1.05;font-weight:700;letter-spacing:.01em}.brand small{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:3px}.nav{display:flex;flex-direction:column;gap:4px}.nav button{all:unset;cursor:pointer;display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:8px;color:var(--muted);font-weight:500}.nav button:hover{background:var(--sunk);color:var(--ink)}.nav button[aria-current=page]{background:var(--brass-soft);color:var(--ink)}.nav button:focus-visible{outline:2px solid var(--brass)}.nav svg{width:18px;height:18px;flex:none}.railfoot{margin-top:auto;font-size:12.5px;color:var(--muted)}.railfoot .bar{margin-top:6px}main{padding-block:28px 60px;padding-left:max(28px,env(safe-area-inset-left,0px));padding-right:max(28px,env(safe-area-inset-right,0px));min-width:0;max-width:1180px}.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}.pagehead{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;margin-bottom:22px}.pagehead h1{font-family:var(--display);font-weight:500;font-size:clamp(28px,4vw,40px);line-height:1.08;margin-top:6px}.mode{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:4px 10px;background:var(--surface)}.grid{display:grid;grid-gap:16px;gap:16px}.g2{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr)}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;min-width:0}.panel h2{font-size:15px;font-weight:600;margin-bottom:12px;display:flex;justify-content:space-between;align-items:baseline;gap:10px}.panel h2 span{font-weight:400;color:var(--muted);font-size:13px}.bar{height:10px;background:var(--sunk);border:1px solid var(--line);overflow:hidden}.bar,.bar i{border-radius:999px}.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--brass),color-mix(in srgb,var(--brass) 70%,var(--ink)));transition:width .5s ease}.bar.lg{height:16px}.big{font-family:var(--display);font-size:56px;line-height:1;font-weight:500;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.big sup{font-size:22px;vertical-align:top;margin-left:2px}.hero{display:grid;grid-template-columns:auto minmax(0,1fr);grid-gap:24px;gap:24px;align-items:center}.hero p{margin:4px 0 12px;color:var(--muted)}.btn{all:unset;box-sizing:border-box;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:9px 16px;border-radius:8px;background:var(--brass);color:var(--brass-ink);font-weight:600;font-size:14px}.btn:hover{filter:brightness(1.07)}.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}.btn.ghost:hover{background:var(--sunk)}.btn.small{padding:5px 10px;font-size:13px}.btn.danger{background:transparent;color:var(--garnet);border:1px solid color-mix(in srgb,var(--garnet) 45%,var(--line))}.btn:focus-visible{outline:2px solid var(--brass);outline-offset:2px}.btn[disabled]{opacity:.45;cursor:not-allowed}.trackrow{display:grid;grid-template-columns:minmax(0,1fr) 52px;grid-gap:12px;gap:12px;align-items:center;padding:10px 0;border-top:1px solid var(--line)}.trackrow:first-of-type{border-top:0}.trackrow b{font-weight:500;font-size:14px;display:block;margin-bottom:6px}.pct{font-family:var(--mono);font-size:13px;text-align:right;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--muted)}.feed{display:flex;flex-direction:column}.feed button{all:unset;cursor:pointer;display:grid;grid-template-columns:auto minmax(0,1fr) auto;grid-gap:12px;gap:12px;align-items:center;padding:11px 4px;border-top:1px solid var(--line)}.feed button:first-child{border-top:0}.feed button:hover b{color:var(--brass)}.feed b{font-weight:500;display:block}.feed small{font-size:12.5px}.feed small,.tag{color:var(--muted)}.tag{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;padding:3px 7px;border-radius:5px;background:var(--sunk);border:1px solid var(--line);white-space:nowrap}.tag.new{background:var(--brass-soft);color:var(--ink)}.tag.done,.tag.new{border-color:transparent}.tag.done{background:var(--ok-soft);color:var(--ok)}.tag.hidden{color:var(--warn)}.tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:10px;gap:10px}.tile{all:unset;cursor:pointer;border:1px solid var(--line);border-radius:8px;padding:12px;background:var(--sunk);display:flex;flex-direction:column;gap:2px}.tile:hover{border-color:var(--brass)}.tile:focus-visible{outline:2px solid var(--brass)}.tile b{font-weight:600;font-size:13.5px}.tile small{color:var(--muted);font-size:12px}.course{margin-bottom:22px}.coursehead{display:grid;grid-template-columns:minmax(0,1fr) 200px;grid-gap:20px;gap:20px;align-items:end;margin-bottom:12px}.coursehead h2{font-family:var(--display);font-weight:500;font-size:26px;margin-top:4px}.coursehead p{margin:4px 0 0;color:var(--muted);max-width:62ch}.coursehead .meta{font-size:12.5px;color:var(--muted);text-align:right}.coursehead .meta .bar{margin-top:6px}.lessons{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));grid-gap:10px;gap:10px}.lesson{all:unset;cursor:pointer;box-sizing:border-box;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:12px 14px;display:flex;flex-direction:column;gap:8px;min-height:92px}.lesson:hover{border-color:var(--brass)}.lesson:focus-visible{outline:2px solid var(--brass)}.lesson .n{font-family:var(--mono);font-size:11px;color:var(--muted)}.lesson b{font-weight:600;font-size:14.5px;line-height:1.3}.lesson .row{display:flex;justify-content:space-between;align-items:center;margin-top:auto}.lesson.is-done{background:color-mix(in srgb,var(--ok-soft) 45%,var(--surface))}.sheet-wrap{position:fixed;inset:0;background:color-mix(in srgb,var(--ink) 45%,transparent);display:flex;justify-content:flex-end;z-index:20}.sheet{background:var(--surface);width:min(640px,100%);height:100%;overflow:auto;padding-block:max(24px,env(safe-area-inset-top,0px)) max(40px,env(safe-area-inset-bottom,0px));padding-left:28px;padding-right:max(28px,env(safe-area-inset-right,0px));border-left:1px solid var(--line)}.sheet .top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px}.sheet h2{font-family:var(--display);font-weight:500;font-size:32px;line-height:1.1;margin:6px 0 14px}.sheet .body{max-width:62ch}.sheet ul{padding-left:20px;margin:0 0 14px}.sheet li{margin-bottom:7px}.tip{border-left:3px solid var(--brass);background:var(--brass-soft);padding:10px 14px;border-radius:0 8px 8px 0;margin:16px 0}.tip b{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;display:block;margin-bottom:2px}.quiz{border:1px solid var(--line);border-radius:var(--r);padding:16px;margin-top:20px;background:var(--sunk)}.quiz legend{font-weight:600;padding:0 4px}.quiz label{display:flex;gap:10px;align-items:flex-start;padding:8px 10px;border-radius:7px;cursor:pointer}.quiz label:hover{background:var(--surface)}.quiz input{margin-top:4px;accent-color:var(--brass)}.feedback{margin-top:10px;font-weight:500}.feedback.ok{color:var(--ok)}.feedback.no{color:var(--garnet)}.sheet .foot{justify-content:space-between;gap:10px;margin-top:22px}.sheet .foot,.tabs{display:flex;flex-wrap:wrap}.tabs{gap:6px;margin-bottom:16px}.tabs button{all:unset;cursor:pointer;padding:7px 13px;border-radius:999px;border:1px solid var(--line);background:var(--surface);font-size:13.5px;font-weight:500;color:var(--muted)}.tabs button[aria-selected=true]{background:var(--ink);color:var(--surface);border-color:var(--ink)}.tabs button:focus-visible{outline:2px solid var(--brass)}.form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:12px 14px;gap:12px 14px}.form .full{grid-column:1/-1}label.f{display:flex;flex-direction:column;gap:5px;font-size:12.5px;color:var(--muted);font-weight:500;min-width:0}label.f input,label.f select,label.f textarea{background:var(--sunk);border:1px solid var(--line);border-radius:7px;padding:8px 10px;font-size:15px;color:var(--ink);width:100%;min-width:0}label.f textarea{min-height:90px;resize:vertical;font-size:14px}.num{font-family:var(--mono);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.out{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));grid-gap:10px;gap:10px;margin-top:4px}.out div{background:var(--sunk);border:1px solid var(--line);border-radius:8px;padding:12px}.out div.main{background:var(--brass-soft);border-color:transparent}.out small{display:block;font-size:12px;color:var(--muted)}.out b{font-family:var(--mono);font-size:20px;font-weight:500;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.note{font-size:12.5px;color:var(--muted);margin-top:12px;max-width:70ch}table{width:100%;border-collapse:collapse;font-size:14px}th{text-align:left;font-weight:500;color:var(--muted);font-size:12px;padding:6px 8px}td,th{border-bottom:1px solid var(--line)}td{padding:10px 8px;vertical-align:middle}td .bar{min-width:120px}.tablewrap{overflow-x:auto}.empty{color:var(--muted);font-size:14px;padding:14px;border:1px dashed var(--line);border-radius:8px;text-align:center}.lessonedit{border:1px solid var(--line);border-radius:8px;padding:14px;background:var(--sunk);display:grid;grid-gap:10px;gap:10px}.lessonedit label.f input,.lessonedit label.f select,.lessonedit label.f textarea{background:var(--surface)}.lessonedit .hd{display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:12px;color:var(--muted)}.opts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr)) 120px;grid-gap:8px;gap:8px}.actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.clist{display:flex;flex-direction:column}.citem{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-gap:12px;gap:12px;align-items:center;padding:12px 0;border-top:1px solid var(--line)}.citem:first-child{border-top:0}.citem b{font-weight:600}.citem small{display:block;color:var(--muted);font-size:12.5px}.toast{position:fixed;bottom:max(20px,calc(env(safe-area-inset-bottom,0px) + 12px));left:50%;transform:translateX(-50%);background:var(--ink);color:var(--surface);padding:9px 16px;border-radius:8px;font-size:14px;z-index:30}@media (max-width:900px){.coursehead,.g2,.g3{grid-template-columns:minmax(0,1fr)}.coursehead .meta{text-align:left}}@media (max-width:760px){.app{grid-template-columns:minmax(0,1fr)}.rail{position:-webkit-sticky;position:sticky;top:env(safe-area-inset-top,0);height:auto;flex-direction:row;align-items:center;flex-wrap:wrap;gap:10px 14px;padding-block:10px;padding-right:max(16px,env(safe-area-inset-right,0px));padding-left:max(16px,env(safe-area-inset-left,0px));border-right:0;border-bottom:1px solid var(--line);z-index:10}body:before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0);z-index:10;background:var(--surface)}.brand small,.railfoot{display:none}.brand b{font-size:16px}.nav{flex-direction:row;gap:2px;overflow-x:auto;width:100%}.nav button{padding:7px 10px;font-size:14px}.nav svg{display:none}main{padding-block:20px 50px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}.hero{grid-template-columns:minmax(0,1fr);gap:10px}.tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.form,.opts{grid-template-columns:minmax(0,1fr)}.sheet{padding-left:max(18px,env(safe-area-inset-left,0px));padding-right:max(18px,env(safe-area-inset-right,0px))}}@media (prefers-reduced-motion:reduce){.bar i{transition:none}}body{margin:0}button.mode{cursor:pointer;font:inherit;font-size:12px}button.mode:hover{border-color:var(--brass)}.linkbtn{all:unset;cursor:pointer;color:var(--brass);font-weight:600;text-decoration:underline;text-underline-offset:2px}.btnrow{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:14px}.panel .btnrow:first-child{margin-top:0}.form .btnrow{margin-top:4px}.span2{grid-column:1/-1}.stack{display:grid;grid-gap:12px;gap:12px}.msg{margin:0;padding:10px 12px;border-radius:8px;background:var(--brass-soft);color:var(--ink);font-size:14px}.perks{margin:0;padding-left:20px;display:grid;grid-gap:8px;gap:8px;color:var(--muted)}.narrow{max-width:460px}.check{display:flex;gap:6px;align-items:center;font-size:14px;color:var(--muted)}.check input{accent-color:var(--brass)}.date{display:inline-grid;place-items:center;width:44px;height:48px;border-radius:8px;background:var(--brass-soft);color:var(--ink);font-family:var(--mono);font-size:10.5px;text-transform:uppercase;letter-spacing:.08em;line-height:1.1;flex:none}.date b{font-family:var(--display);font-size:20px;font-weight:500;letter-spacing:0;text-transform:none}.date.lg{width:56px;height:62px}.date.lg b{font-size:26px}.evgrid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}.evcard{display:flex;flex-direction:column;gap:12px}.evtop{display:flex;gap:14px;align-items:flex-start}.evtop h3{font-family:var(--display);font-weight:500;font-size:21px;line-height:1.15;margin-top:3px}.evdesc{margin:0;color:var(--ink);font-size:14px;max-width:62ch}.evfoot{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}.evfoot .btnrow{margin-top:0}.evfoot small{color:var(--muted);font-family:var(--body)}a.btn{text-decoration:none}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:12px;gap:12px;margin-bottom:16px}.stats div{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}.stats small{display:block;font-size:12px;color:var(--muted)}.stats b{font-family:var(--display);font-size:30px;font-weight:500;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.grid+.grid{margin-top:16px}@media (max-width:760px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}}