:root{--paper:#f3f3f3;--surface:#fff;--surface-2:#f5f5f5;--surface-3:#ededed;--sunk:#e4e4e4;--ink:#1a1a1a;--ink-2:#454545;--ink-3:#6e6e6e;--rule:#e4e4e4;--rule-2:#cfcfcf;--acrylic:#ffffffb8;--accent:#0f6cbd;--on-accent:#fff;--sjl:#0f6cbd;--anj:#4a4fbf;--odb:#c42b1c;--sjl-wash:#edf5fd;--anj-wash:#efeffc;--odb-wash:#fdf0ee;--good:#0f7b0f;--warn:#9d5d00;--bad:#c42b1c;--sh-1:0 1px 2px #0000000d, 0 1px 3px #0000000a;--sh-2:0 2px 4px #0000000d, 0 8px 16px -6px #0000001f;--sh-3:0 4px 8px #0000000f, 0 16px 32px -10px #0000002e;--sans:"Figtree","Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,sans-serif;--display:"Figtree","Segoe UI Variable Display","Segoe UI",system-ui,-apple-system,sans-serif;--read-font:"Source Sans 3","Segoe UI",system-ui,-apple-system,sans-serif;--mono:"Cascadia Mono","Cascadia Code",ui-monospace,"IBM Plex Mono","SF Mono",Consolas,monospace;--ease:cubic-bezier(.1,.9,.2,1);--r-card:8px;--r-btn:5px;--r-sm:4px;--read:17.5px}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--paper:#08080a;--surface:#131316;--surface-2:#1d1d21;--surface-3:#0f0f12;--sunk:#000;--ink:#f3f3f6;--ink-2:#b2b2bc;--ink-3:#7a7a86;--rule:#232329;--rule-2:#33333b;--acrylic:#0b0b0ec7;--accent:#60b9f5;--on-accent:#08131b;--sjl:#60b9f5;--anj:#a5a8ff;--odb:#ff8c82;--sjl-wash:#13252f;--anj-wash:#1d1f33;--odb-wash:#33191a;--good:#6ccb6c;--warn:#e8a317;--bad:#ff8c82;--sh-1:0 1px 2px #00000080;--sh-2:0 2px 4px #00000073, 0 8px 16px -6px #0009;--sh-3:0 4px 8px #00000080, 0 16px 32px -10px #000000bf}}:root[data-theme=dark]{--paper:#08080a;--surface:#131316;--surface-2:#1d1d21;--surface-3:#0f0f12;--sunk:#000;--ink:#f3f3f6;--ink-2:#b2b2bc;--ink-3:#7a7a86;--rule:#232329;--rule-2:#33333b;--acrylic:#0b0b0ec7;--accent:#60b9f5;--on-accent:#08131b;--sjl:#60b9f5;--anj:#a5a8ff;--odb:#ff8c82;--sjl-wash:#13252f;--anj-wash:#1d1f33;--odb-wash:#33191a;--good:#6ccb6c;--warn:#e8a317;--bad:#ff8c82;--sh-1:0 1px 2px #00000080;--sh-2:0 2px 4px #00000073, 0 8px 16px -6px #0009;--sh-3:0 4px 8px #00000080, 0 16px 32px -10px #000000bf}:root[data-read=l]{--read:19.5px}:root[data-read=xl]{--read:22px}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{color:var(--ink);background:var(--paper);background-image:radial-gradient(1200px 620px at 12% -8%, color-mix(in srgb, var(--accent) 6%, transparent), transparent 70%), radial-gradient(900px 520px at 92% 4%, color-mix(in srgb, var(--odb) 4%, transparent), transparent 68%);font-family:var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;background-attachment:fixed;margin:0;font-size:15px;line-height:1.55}h1,h2,h3,h4{font-family:var(--display);text-wrap:balance;letter-spacing:-.011em;margin:0;font-weight:600}p{margin:0}button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:0}a{color:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--r-sm)}.num{font-family:var(--mono);font-variant-numeric:tabular-nums}.eyebrow{letter-spacing:.075em;text-transform:uppercase;color:var(--ink-3);font-size:11px;font-weight:600}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}.shell{grid-template-columns:250px minmax(0,1fr);min-height:100vh;display:grid}.rail{border-right:1px solid var(--rule);background:var(--acrylic);-webkit-backdrop-filter:blur(34px)saturate(1.6);backdrop-filter:blur(34px)saturate(1.6);z-index:10;flex-direction:column;height:100vh;display:flex;position:sticky;top:0}.brand{padding:22px 20px 18px}.brand h1{letter-spacing:-.02em;font-size:19.5px;font-weight:600;line-height:1.2}.brand .sub{color:var(--ink-3);font-size:11.5px;font-family:var(--mono);letter-spacing:.04em;margin-top:4px}.nav{flex-direction:column;flex:1;gap:2px;padding:4px 8px;display:flex;overflow-y:auto}.nav-lbl{padding:16px 12px 6px}.nav button{border-radius:var(--r-btn);width:100%;color:var(--ink);text-align:left;transition:background .1s var(--ease), color .1s var(--ease);align-items:center;gap:10px;padding:9px 12px;font-size:14.5px;display:flex;position:relative}.nav button:hover{background:var(--surface-2);color:var(--ink)}.nav button:active{opacity:.7}.nav button[aria-current=true]{background:var(--surface-2);color:var(--ink);font-weight:600}.nav button[aria-current=true]:before{content:"";background:var(--accent);border-radius:2px;width:3px;height:17px;position:absolute;top:50%;left:0;transform:translateY(-50%)}.nav button .k{font-family:var(--mono);opacity:.5;margin-left:auto;font-size:11px}.rail-foot{border-top:1px solid var(--rule);align-items:center;gap:8px;padding:12px 14px;display:flex}.tbtn{border:1px solid var(--rule-2);border-radius:var(--r-btn);color:var(--ink-2);background:var(--surface);transition:background .1s var(--ease), border-color .1s var(--ease);padding:6px 11px;font-size:12px}.tbtn:hover{background:var(--surface-2);border-color:var(--ink-3);color:var(--ink)}.main{flex-direction:column;min-width:0;display:flex}.view{width:100%;max-width:1120px;margin-inline:auto;padding:36px 44px 90px;display:none}.view.on{display:block}.view-head{margin-bottom:26px}.view-head h2{letter-spacing:-.022em;font-size:28px}.view-head p{color:var(--ink-2);max-width:64ch;margin-top:7px;font-size:14.5px}.hero{border:1px solid var(--rule);border-radius:var(--r-card);background:var(--surface);box-shadow:var(--sh-2);grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:30px;margin-bottom:20px;padding:28px 30px;display:grid}.hero-l h3{letter-spacing:-.026em;font-size:31px;line-height:1.14}.hero-l p{color:var(--ink-2);max-width:54ch;margin-top:9px;font-size:15px;line-height:1.6}.hero-cta{flex-wrap:wrap;gap:9px;margin-top:20px;display:flex}.btn{border-radius:var(--r-btn);background:var(--c,var(--accent));color:var(--on-accent);box-shadow:var(--sh-1);transition:filter .1s var(--ease), transform 60ms var(--ease);border:1px solid #0000;padding:9px 18px;font-size:14px;font-weight:600}.btn:hover{filter:brightness(1.08)}.btn:active{filter:brightness(.94);transform:translateY(1px)}.btn.ghost{background:var(--surface);color:var(--ink);border-color:var(--rule-2);font-weight:500}.btn.ghost:hover{background:var(--surface-2);filter:none}.btn[disabled]{opacity:.4;cursor:default;box-shadow:none}.countdown{text-align:right;border-left:1px solid var(--rule);padding-left:30px}.countdown .d{font-family:var(--display);letter-spacing:-.045em;font-variant-numeric:tabular-nums;color:var(--accent);font-size:56px;font-weight:600;line-height:1}.countdown .l{margin-top:8px}.countdown input{font-family:var(--mono);border:1px solid var(--rule-2);border-radius:var(--r-sm);background:var(--surface);color:var(--ink-2);width:140px;margin-top:11px;padding:5px 9px;font-size:12px}.bar{background:var(--sunk);border-radius:3px;height:6px;margin-top:15px;overflow:hidden}.bar i{background:var(--c);height:100%;transition:width .55s var(--ease);border-radius:3px;display:block}.empty{text-align:center;color:var(--ink-3);padding:28px 19px;font-size:13.5px}.filters{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:16px;display:flex}.chip{border:1px solid var(--rule-2);background:var(--surface);color:var(--ink-2);transition:.12s var(--ease);border-radius:999px;padding:7px 14px;font-size:13px}.chip:hover{background:var(--surface-2);color:var(--ink)}.chip[aria-pressed=true]{background:var(--accent);color:var(--on-accent);border-color:#0000;font-weight:600}.chip .n{font-family:var(--mono);opacity:.7;margin-left:6px;font-size:11px}.srch{border:1px solid var(--rule-2);border-radius:var(--r-btn);background:var(--surface);min-width:200px;max-width:100%;color:var(--ink);font-size:14px;font-family:var(--sans);transition:border-color .1s var(--ease), box-shadow .1s var(--ease);flex:1;padding:8px 14px}.srch:focus{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent);outline:none}.srch::placeholder{color:var(--ink-3)}.index{border:1px solid var(--rule);border-radius:var(--r-card);background:var(--surface);box-shadow:var(--sh-1);overflow:hidden}.trow{text-align:left;border-bottom:1px solid var(--rule);width:100%;transition:background .1s var(--ease);grid-template-columns:56px minmax(0,1fr) 140px 82px;align-items:center;gap:16px;padding:12px 19px;display:grid;position:relative}.trow:last-child{border-bottom:0}.trow:hover{background:var(--surface-2)}.trow:hover:before{content:"";background:var(--c);border-radius:0 2px 2px 0;width:3px;position:absolute;top:8px;bottom:8px;left:0}.trow .tk{font-family:var(--mono);color:var(--c);font-variant-numeric:tabular-nums;letter-spacing:-.02em;font-size:12.5px;font-weight:600}.trow .ttl{min-width:0}.trow .ttl b{letter-spacing:-.008em;font-size:14.5px;font-weight:600;display:block}.trow .ttl span{color:var(--ink-3);text-overflow:ellipsis;white-space:nowrap;margin-top:1px;font-size:13px;display:block;overflow:hidden}.trow .mini{background:var(--sunk);border-radius:3px;height:5px;overflow:hidden}.trow .mini i{background:var(--c);border-radius:3px;height:100%;display:block}.index.plain .trow{grid-template-columns:56px minmax(0,1fr) 140px}.trow .cnt{font-family:var(--mono);color:var(--ink-3);text-align:right;font-variant-numeric:tabular-nums;font-size:11.5px}.grp-h{background:var(--surface-3);border-bottom:1px solid var(--rule);justify-content:space-between;align-items:baseline;gap:10px;padding:15px 19px 9px;display:flex}.reader{max-width:900px;margin-inline:auto}.back{color:var(--ink-3);border-radius:var(--r-sm);transition:background .1s var(--ease), color .1s var(--ease);align-items:center;gap:7px;margin-bottom:18px;margin-left:-8px;padding:4px 8px;font-size:13.5px;display:inline-flex}.back:hover{color:var(--ink);background:var(--surface-2)}.rhead{border-bottom:1px solid var(--rule);margin-bottom:22px;padding-bottom:20px;position:relative}.rhead:after{content:"";background:var(--c);border-radius:2px;width:72px;height:3px;position:absolute;bottom:-1px;left:0}.rhead .tk{font-family:var(--mono);color:var(--c);letter-spacing:.05em;font-size:12px;font-weight:600}.rhead h2{letter-spacing:-.028em;margin-top:9px;font-size:33px;line-height:1.13}.rhead .sub{color:var(--ink-2);margin-top:7px;font-size:16.5px}.rhead .acts{flex-wrap:wrap;align-items:center;gap:9px;margin-top:18px;display:flex}.sizer{border:1px solid var(--rule-2);border-radius:var(--r-btn);background:var(--surface);gap:2px;margin-left:auto;padding:2px;display:flex}.sizer button{color:var(--ink-2);transition:.1s var(--ease);border-radius:3px;padding:4px 10px;font-size:13px}.sizer button:hover{background:var(--surface-2)}.sizer button[aria-pressed=true]{background:var(--c,var(--accent));color:var(--on-accent);font-weight:600}.tasks{border:1px solid var(--rule);border-left:4px solid var(--c);border-radius:var(--r-card);background:var(--c-wash);margin-bottom:24px;padding:17px 21px}.tasks .eyebrow{color:var(--c)}.tasks ol{flex-direction:column;gap:7px;margin:11px 0 0;padding-left:21px;display:flex}.tasks li{font-family:var(--read-font);color:var(--ink-2);font-size:15px;line-height:1.55}.tasks li::marker{font-family:var(--mono);color:var(--c);font-size:12px;font-weight:600}.tabs{border-bottom:1px solid var(--rule);gap:3px;margin-bottom:24px;display:flex;overflow-x:auto}.tabs button{color:var(--ink-3);white-space:nowrap;border-radius:var(--r-sm) var(--r-sm) 0 0;transition:color .1s var(--ease), background .1s var(--ease);border-bottom:2px solid #0000;margin-bottom:-1px;padding:10px 15px;font-size:13.5px}.tabs button:hover{color:var(--ink);background:var(--surface-2)}.tabs button[aria-selected=true]{color:var(--c);border-bottom-color:var(--c);font-weight:600}.prose{font-family:var(--read-font);font-size:var(--read);color:var(--ink);max-width:70ch;line-height:1.72}.prose>*+*{margin-top:15px}.prose h4{letter-spacing:.08em;text-transform:uppercase;color:var(--c);border-bottom:1px solid var(--rule);margin-top:34px;padding-bottom:6px;font-size:12.5px;font-weight:700}.prose ul{flex-direction:column;gap:7px;margin:13px 0 0;padding-left:23px;display:flex}.prose li{padding-left:3px}.prose li::marker{color:var(--c)}.prose .q{border-left:3px solid var(--rule-2);color:var(--ink-2);padding:2px 0 2px 17px;font-style:italic}.srcnote{color:var(--ink-3);font-size:12px;font-family:var(--mono);margin-bottom:18px}.study-wrap{max-width:780px;margin:0 auto}.study-bar{align-items:center;gap:15px;margin-bottom:20px;display:flex}.study-bar .prog{background:var(--sunk);border-radius:3px;flex:1;height:5px;overflow:hidden}.study-bar .prog i{background:var(--c);height:100%;transition:width .35s var(--ease);border-radius:3px;display:block}.study-bar .cnt{font-family:var(--mono);color:var(--ink-3);font-variant-numeric:tabular-nums;font-size:12.5px}.card{border:1px solid var(--rule);background:var(--surface);box-shadow:var(--sh-3);border-radius:12px;flex-direction:column;min-height:340px;display:flex;overflow:hidden}.card-top{border-bottom:1px solid var(--rule);background:var(--c-wash);justify-content:space-between;align-items:center;gap:12px;padding:12px 24px;display:flex}.card-top .tk{font-family:var(--mono);color:var(--c);font-size:11.5px;font-weight:600}.card-top .kind{letter-spacing:.09em;text-transform:uppercase;color:var(--ink-3);font-size:10.5px;font-weight:600}.card-q{flex:none;padding:36px 36px 14px}.card-q p{font-family:var(--display);letter-spacing:-.02em;text-wrap:balance;font-size:25px;font-weight:600;line-height:1.32}.card-a{flex-direction:column;flex:1;justify-content:center;padding:4px 36px 32px;display:flex}.card-a .inner{font-family:var(--read-font);color:var(--ink-2);border-top:1px solid var(--rule);padding-top:19px;font-size:17px;line-height:1.66}@keyframes rise{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.card-hint{color:var(--ink-3);align-items:center;gap:9px;padding:0 36px 36px;font-size:13.5px;display:flex}kbd{font-family:var(--mono);border:1px solid var(--rule-2);border-radius:var(--r-sm);background:var(--surface-2);color:var(--ink-2);border-bottom-width:2px;padding:2px 7px;font-size:11px}.grades{grid-template-columns:repeat(4,1fr);gap:9px;margin-top:16px;display:grid}.grade{border:1px solid var(--rule-2);border-radius:var(--r-btn);background:var(--surface);box-shadow:var(--sh-1);transition:.12s var(--ease);flex-direction:column;align-items:center;gap:4px;padding:12px 8px;display:flex}.grade:hover{border-color:var(--g);background:var(--surface-2);transform:translateY(-1px)}.grade b{color:var(--g);font-size:14px;font-weight:600}.grade span{font-family:var(--mono);color:var(--ink-3);font-size:10.5px}.deckpick{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;display:grid}.deck{border:1px solid var(--rule);border-radius:var(--r-card);background:var(--surface);text-align:left;border-left:4px solid var(--c);box-shadow:var(--sh-1);transition:box-shadow .18s var(--ease), transform .14s var(--ease);padding:16px 18px}.deck:hover{box-shadow:var(--sh-3);transform:translateY(-2px)}.deck b{font-size:15.5px;font-weight:600;display:block}.deck span{color:var(--ink-3);margin-top:5px;font-size:12.5px;display:block}.done{text-align:center;padding:54px 20px}.done .big{font-family:var(--display);letter-spacing:-.045em;font-size:52px;font-weight:600}.done h3{margin-top:12px;font-size:24px}.done p{color:var(--ink-2);margin-top:9px;max-width:46ch;margin-inline:auto;font-size:14.5px;line-height:1.6}.opt{text-align:left;border:1px solid var(--rule-2);border-radius:var(--r-card);background:var(--surface);width:100%;box-shadow:var(--sh-1);transition:.12s var(--ease);padding:14px 17px;font-size:14.5px;line-height:1.55;display:block}.opt:hover:not([disabled]){border-color:var(--accent);background:var(--surface-2);transform:translateY(-1px)}.opt[data-s=ok]{border-color:var(--good);background:color-mix(in srgb, var(--good) 13%, var(--surface));transform:none}.opt[data-s=no]{border-color:var(--bad);background:color-mix(in srgb, var(--bad) 13%, var(--surface));transform:none}.opt[disabled]{cursor:default;box-shadow:none}.opt .lt{font-family:var(--mono);color:var(--ink-3);margin-right:10px;font-size:11.5px;font-weight:600}.opts{flex-direction:column;gap:10px;margin-top:20px;display:flex}.ticket{border:1px solid var(--rule);background:var(--surface);box-shadow:var(--sh-3);border-radius:12px;max-width:740px;margin:0 auto;padding:40px 42px;position:relative;overflow:hidden}.ticket:before{content:"";background:var(--c);width:5px;position:absolute;inset:0 auto 0 0}.ticket .eyebrow{color:var(--c)}.ticket .n{font-family:var(--display);letter-spacing:-.05em;color:var(--c);font-variant-numeric:tabular-nums;font-size:72px;font-weight:600;line-height:1}.ticket h3{letter-spacing:-.026em;margin-top:13px;font-size:28px}.ticket .sub{color:var(--ink-2);margin-top:7px;font-size:17px}.timer{font-family:var(--display);font-variant-numeric:tabular-nums;letter-spacing:-.035em;text-align:center;font-size:42px;font-weight:600}.timer.low{color:var(--bad)}.hit{text-align:left;border-bottom:1px solid var(--rule);width:100%;transition:background .1s var(--ease);padding:15px 19px;display:block;position:relative}.hit:hover{background:var(--surface-2)}.hit:hover:before{content:"";background:var(--c);border-radius:0 2px 2px 0;width:3px;position:absolute;top:8px;bottom:8px;left:0}.hit .hh{flex-wrap:wrap;align-items:baseline;gap:11px;margin-bottom:6px;display:flex}.hit .tk{font-family:var(--mono);color:var(--c);font-size:11px;font-weight:600}.hit .ht{font-size:14.5px;font-weight:600}.hit .hs{font-family:var(--read-font);color:var(--ink-2);font-size:14px;line-height:1.6}mark{background:color-mix(in srgb, var(--warn) 40%, transparent);color:inherit;border-radius:2px;padding:0 2px;font-weight:600}.railsearch{padding:0 12px 10px}.railsearch input{border:1px solid var(--rule-2);border-radius:var(--r-btn);background:var(--surface);width:100%;color:var(--ink);font:inherit;transition:border-color .12s var(--ease), box-shadow .12s var(--ease);padding:8px 12px;font-size:13.5px}.railsearch 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