:root{--bg:#F1F4F2;--surface:#FFFFFF;--sunken:#E8ECEA;--ink:#15201C;--muted:#5A6862;--line:#D8DFDB;--accent:#3245D1;--accent-soft:#E3E6FA;--on-accent:#FFFFFF;--good:#1D7F54;--good-soft:#DDF1E7;--warn:#A86A12;--warn-soft:#F7EBD6;--bad:#B93A33;--bad-soft:#F8E1DF;--heat0:#E3E8E5;--heat1:#C5CBF3;--heat2:#8E9AEA;--heat3:#5566DC;--heat4:#3245D1;--f-display:"Bricolage Grotesque","Avenir Next","Segoe UI",system-ui,sans-serif;--f-body:"Atkinson Hyperlegible","Segoe UI",system-ui,sans-serif;--f-data:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,monospace;--r:14px;--r-sm:9px}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0E1412;--surface:#161F1C;--sunken:#1C2723;--ink:#E4EBE7;--muted:#93A29B;--line:#27332F;--accent:#8E9CFF;--accent-soft:#242B55;--on-accent:#0E1412;--good:#4DC48C;--good-soft:#173328;--warn:#E3A84E;--warn-soft:#3A2D16;--bad:#F0726A;--bad-soft:#3D1D1B;--heat0:#1F2A26;--heat1:#2B3466;--heat2:#44529E;--heat3:#6676D8;--heat4:#8E9CFF;color-scheme:dark}}:root[data-theme=dark]{--bg:#0E1412;--surface:#161F1C;--sunken:#1C2723;--ink:#E4EBE7;--muted:#93A29B;--line:#27332F;--accent:#8E9CFF;--accent-soft:#242B55;--on-accent:#0E1412;--good:#4DC48C;--good-soft:#173328;--warn:#E3A84E;--warn-soft:#3A2D16;--bad:#F0726A;--bad-soft:#3D1D1B;--heat0:#1F2A26;--heat1:#2B3466;--heat2:#44529E;--heat3:#6676D8;--heat4:#8E9CFF;color-scheme:dark}*{box-sizing:border-box}[hidden]{display:none!important}body,html{min-height:100%}body{margin:0}a{color:var(--accent)}img{max-width:100%}body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}h1,h2,h3{font-family:var(--f-display);line-height:1.15;margin:0;text-wrap:balance;letter-spacing:-.01em}p{margin:0}button{font:inherit;color:inherit}:focus-visible{outline:2px 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var(--line)}.panel-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}.panel h2{font-size:1.3rem}.chart-wrap{overflow-x:auto}.curve{width:100%;min-width:480px;height:auto;display:block}.curve .grid{stroke:var(--line);stroke-width:1}.curve .ax{fill:var(--muted);font-family:var(--f-data);font-size:11px}.curve .forget{fill:none;stroke:var(--muted);stroke-width:2;stroke-dasharray:5 5}.curve .trace{fill:none;stroke:var(--accent);stroke-width:3;stroke-linejoin:round}.curve .area{fill:var(--accent);opacity:.09}.curve .dot{fill:var(--surface);stroke:var(--accent);stroke-width:2.5}.curve .lab{font-family:var(--f-body);font-size:12px;font-weight:700}.curve .lab.a{fill:var(--accent)}.curve .lab.m{fill:var(--muted)}.legend{display:flex;gap:18px;flex-wrap:wrap;font-size:.85rem;color:var(--muted)}.legend span{display:inline-flex;align-items:center;gap:8px}.legend i{width:22px;height:0;border-top:3px solid var(--accent);display:inline-block}.legend 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var(--line)}.card-meta{display:flex;gap:8px;flex-wrap:wrap}.q{font-family:var(--f-display);font-weight:700;font-size:clamp(1.3rem,3vw,1.75rem);line-height:1.3;max-width:34ch}.opts{display:flex;flex-direction:column;gap:10px}.opt{display:grid;grid-template-columns:34px minmax(0,1fr) auto;grid-gap:12px;gap:12px;align-items:center;text-align:left;padding:14px 16px;border-radius:var(--r-sm);border:1.5px solid var(--line);background:var(--surface);cursor:pointer}.opt:hover:not([disabled]){border-color:var(--accent)}.opt .k{width:30px;height:30px;border-radius:8px;display:grid;place-items:center;background:var(--sunken);font-family:var(--f-data);font-weight:600;font-size:.85rem}.opt[disabled]{cursor:default}.opt.right{border-color:var(--good);background:var(--good-soft)}.opt.right .k{background:var(--good);color:var(--surface)}.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}.opt.wrong .k{background:var(--bad);color:var(--surface)}.opt 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var(--line);background:var(--surface);cursor:pointer;font-weight:700}.rate button small{font-family:var(--f-data);font-weight:400;font-size:.75rem;color:var(--muted)}.rate button.sug,.rate button:hover{border-color:var(--accent)}.rate button.sug{background:var(--accent-soft)}.rate .again{color:var(--bad)}.rate .hard{color:var(--warn)}.rate .good{color:var(--good)}.rate .easy{color:var(--accent)}.hint{font-size:.8rem;color:var(--muted);text-align:center}kbd{font-family:var(--f-data);font-size:.75rem;border:solid var(--line);border-width:1px 1px 2px;border-radius:5px;padding:0 5px;background:var(--surface)}.done{align-items:flex-start}.done .big{font-family:var(--f-display);font-weight:800;font-size:3rem;line-height:1}.res-list{display:flex;flex-direction:column;width:100%}.res-list div{grid-template-columns:minmax(0,1fr) auto;grid-gap:12px;padding:10px 0;border-top:1px solid var(--line);font-size:.92rem}.decks,.res-list 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var(--line)}.plans{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:12px;gap:12px}.plan{display:flex;flex-direction:column;gap:12px;padding:20px;border-radius:var(--r);border:1px solid var(--line)}.plan.pro{border:2px solid var(--accent)}.plan .price{font-family:var(--f-display);font-weight:800;font-size:2rem}.plan .price small{font-size:.45em;font-weight:500;color:var(--muted)}.plan ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px;font-size:.92rem}.plan li{display:grid;grid-template-columns:18px minmax(0,1fr);grid-gap:8px;gap:8px}.plan li:before{content:"";width:8px;height:8px;margin-top:8px;border-radius:50%;background:var(--accent)}.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:12px 18px;border-radius:var(--r-sm);font-weight:700;z-index:60;max-width:calc(100% - 32px)}@media (max-width:820px){.app{grid-template-columns:minmax(0,1fr)}.side{position:fixed;top:auto;bottom:0;left:0;right:0;height:auto;z-index:40;flex-direction:row;padding:6px max(8px,env(safe-area-inset-right,0px)) calc(6px + env(safe-area-inset-bottom,0px)) max(8px,env(safe-area-inset-left,0px));border-right:0;border-top:1px solid var(--line);background:var(--surface)}.brand,.side-foot{display:none}.nav{flex-direction:row;width:100%;justify-content:space-around}.nav a{flex-direction:column;gap:2px;font-size:.72rem;padding:6px 10px;position:relative}.nav .count{position:absolute;top:0;right:4px;margin:0;font-size:.65rem;padding:0 6px}main{padding-block:24px 120px}.mobile-brand{display:flex!important}.decks,.due,.plans,.science,.stats{grid-template-columns:minmax(0,1fr)}.row{grid-template-columns:minmax(0,1fr) 52px}.row 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64px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}.topbar{display:flex;justify-content:space-between;gap:12px}.hero,.topbar{align-items:center}.hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);grid-gap:40px;gap:40px}.hero h1{font-size:clamp(2.3rem,5.5vw,3.8rem);font-weight:800;letter-spacing:-.03em}.hero p{font-size:1.15rem;color:var(--muted);max-width:46ch}.hero-actions{gap:10px}.footer,.hero-actions{display:flex;flex-wrap:wrap}.footer{gap:16px;font-size:.85rem;border-top:1px solid var(--line);padding-top:20px}.footer,.footer a{color:var(--muted)}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-sm)}table{border-collapse:collapse;width:100%;font-size:.88rem}td,th{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}th{background:var(--sunken);font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}tr.bad td{background:var(--bad-soft)}.prose{max-width:68ch;display:flex;flex-direction:column;gap:14px}.prose h2{font-size:1.2rem;margin-top:10px}.draft{border:2px dashed var(--warn);background:var(--warn-soft);color:var(--warn);padding:14px;border-radius:var(--r-sm);font-weight:700}.side-user{font-size:.85rem;padding:0 8px;flex-direction:column;gap:6px}.side-user,.side-user a{color:var(--muted)}@media (max-width:820px){.hero{grid-template-columns:minmax(0,1fr)}}.picked{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 12px;border:1.5px solid var(--accent);border-radius:var(--r-sm);background:var(--accent-soft)}.pick-list{max-height:260px;overflow:auto;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface)}.pick-list,.pick-list button{display:flex;flex-direction:column}.pick-list button{align-items:flex-start;gap:2px;text-align:left;padding:10px 12px;border:0;border-bottom:1px solid var(--line);background:transparent;cursor:pointer}.pick-list button:hover{background:var(--sunken)}.tabs{display:flex;gap:6px;flex-wrap:wrap}.tabs a{padding:8px 14px;border-radius:99px;border:1px solid var(--line);text-decoration:none;color:var(--muted);font-weight:700;font-size:.9rem;background:var(--surface)}.tabs a[aria-current=page]{background:var(--ink);color:var(--bg);border-color:var(--ink)}.threads{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--surface)}.thread-row{display:grid;grid-template-columns:52px minmax(0,1fr) auto;grid-gap:14px;gap:14px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line);text-decoration:none;color:inherit}.thread-row:last-child{border-bottom:0}.thread-row:hover{background:var(--bg)}.thread-row h3{font-size:1.02rem;font-family:var(--f-display)}.thread-row .meta{font-size:.8rem;gap:10px;flex-wrap:wrap;margin-top:2px}.thread-row 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