.tk{--tk-paper:#faf9f7;--tk-surface:#fff;--tk-sunk:#f4f2ee;--tk-ink:#171717;--tk-ink-2:#45433f;--tk-line:#17171721;--tk-line-2:#17171738;--tk-blue:#5665f0;--tk-blue-edge:#4252e0;--tk-blue-ink:#3441c7;--tk-blue-soft:#5665f01a;--tk-amber:#c77700;--tk-amber-ink:#8a4b00;--tk-amber-soft:#fdf1dc;--tk-head:var(--ug-headline-font,"CoFo Robert", "CoFo Robert Fallback", Georgia, serif);--tk-ui:var(--ug-ui-font,"CoFo Brilliant", "CoFo Brilliant Fallback", system-ui, sans-serif);--tk-radius-xl:24px;--tk-radius:16px;--tk-radius-s:12px;background:var(--tk-paper);min-height:100vh;color:var(--tk-ink);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-family:var(--tk-ui);-webkit-font-smoothing:antialiased;font-size:17px;line-height:1.5}.tk *,.tk :before,.tk :after{box-sizing:border-box}.tk-sr{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.tk-bar{z-index:5;padding:12px 16px 0;position:sticky;top:0}.tk-bar-inner{background:var(--tk-surface);max-width:1048px;min-height:56px;box-shadow:0 1px 0 var(--tk-line), 0 8px 24px #1717170f;border-radius:999px;justify-content:space-between;align-items:center;gap:12px;margin:0 auto;padding:10px 18px;display:flex}.tk-bar a{color:var(--tk-ink);text-decoration:none}.tk-bar nav{flex-wrap:wrap;gap:4px;display:flex}.tk-bar nav a{border-radius:999px;padding:8px 12px;font-size:15px;font-weight:700}.tk-bar nav a[aria-current=page]{background:var(--tk-blue-soft);color:var(--tk-blue-ink)}.tk-bar nav a:hover{background:var(--tk-sunk)}.tk-main{max-width:1048px;margin:0 auto;padding:40px 24px 96px}.tk-kicker{color:var(--tk-blue-ink);margin:0 0 10px;font-size:15px;font-weight:700}.tk-h1{font-family:var(--tk-head);letter-spacing:-.01em;max-width:18ch;margin:0;font-size:clamp(34px,4.4vw,52px);font-weight:500;line-height:1.05}.tk-lead{max-width:52ch;color:var(--tk-ink-2);margin:14px 0 0;font-size:19px}.tk-h2{font-family:var(--tk-head);margin:0;font-size:28px;font-weight:500;line-height:1.15}.tk-section{margin-top:56px}.tk-section>.tk-h2{margin-bottom:18px}.tk-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:36px;display:grid}.tk-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}@media (max-width:1100px){.tk-grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}}.tk-tile{background:var(--tk-surface);border:2px solid var(--tk-line);border-radius:var(--tk-radius-xl);min-height:240px;color:var(--tk-ink);box-shadow:0 4px 0 var(--tk-line);align-content:start;gap:10px;padding:24px;text-decoration:none;transition:transform .15s,box-shadow .15s,border-color .15s;display:grid}.tk-tile:hover{border-color:var(--tk-ink)}.tk-tile:active{box-shadow:0 0 0 var(--tk-line);transform:translateY(4px)}.tk-tile h2{font-family:var(--tk-head);margin:0;font-size:24px;font-weight:500;line-height:1.15}.tk-tile p{color:var(--tk-ink-2);margin:0;font-size:16px}.tk-tile .tk-go{color:var(--tk-blue-ink);margin-top:auto;font-weight:700}.tk-art{width:72px;height:72px}.tk-card{background:var(--tk-surface);border:2px solid var(--tk-line);border-radius:var(--tk-radius-xl);padding:24px}.tk-btn{border:2px solid var(--tk-line-2);background:var(--tk-surface);min-height:48px;box-shadow:0 3px 0 var(--tk-line-2);font:inherit;color:var(--tk-ink);cursor:pointer;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-size:16px;font-weight:700;text-decoration:none;transition:transform .12s,box-shadow .12s,border-color .12s,filter .12s;display:inline-flex}.tk-btn:hover{border-color:var(--tk-ink)}.tk-btn:active{box-shadow:0 0 0 var(--tk-line-2);transform:translateY(3px)}.tk-btn-primary{background:var(--tk-blue);color:#fff;box-shadow:0 4px 0 var(--tk-blue-edge);border-color:#0000}.tk-btn-primary:hover{filter:brightness(1.06);border-color:#0000}.tk-btn-primary:active{box-shadow:0 0 0 var(--tk-blue-edge);transform:translateY(4px)}.tk-btn:focus-visible,.tk-tile:focus-visible,.tk-input:focus-visible,.tk-seg button:focus-visible{outline-offset:2px;outline:3px solid #5665f073}.tk-row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.tk-toast{color:var(--tk-blue-ink);font-size:15px;font-weight:700}.tk-toast:empty{display:none}.tk-seg{background:var(--tk-sunk);border-radius:999px;gap:4px;padding:4px;display:inline-flex}.tk-seg button{min-height:40px;font:inherit;color:var(--tk-ink-2);cursor:pointer;background:0 0;border:0;border-radius:999px;padding:6px 16px;font-size:15px;font-weight:700}.tk-seg button[aria-pressed=true]{background:var(--tk-surface);color:var(--tk-ink);box-shadow:0 1px 0 var(--tk-line-2), 0 2px 8px #17171714}.tk-label{margin:0 0 8px;font-size:15px;font-weight:700;display:block}.tk-date{border:2px solid var(--tk-line-2);border-radius:var(--tk-radius-s);background:var(--tk-surface);min-height:44px;font:inherit;color:var(--tk-ink);padding:8px 14px;font-size:16px}.tk-split{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);align-items:start;gap:32px;margin-top:36px;display:grid}.tk-frame{border-radius:var(--tk-radius-xl);background:var(--tk-surface);width:100%;height:640px;box-shadow:0 0 0 2px var(--tk-line);border:0}.tk-steps-list{counter-reset:tk-step;gap:14px;margin:0;padding:0;list-style:none;display:grid}.tk-steps-list>li{counter-increment:tk-step;padding-left:44px;position:relative}.tk-steps-list>li:before{content:counter(tk-step);background:var(--tk-blue-soft);width:30px;height:30px;color:var(--tk-blue-ink);border-radius:50%;place-items:center;font-size:15px;font-weight:700;display:grid;position:absolute;top:0;left:0}.tk-steps-list h3{margin:2px 0 4px;font-size:17px}.tk-steps-list p{color:var(--tk-ink-2);margin:0;font-size:16px}.tk-code{resize:vertical;border:2px solid var(--tk-line);border-radius:var(--tk-radius);background:var(--tk-sunk);width:100%;min-height:132px;color:var(--tk-ink);white-space:pre-wrap;overflow-wrap:anywhere;margin:10px 0 12px;padding:14px 16px;font:13px/1.5 ui-monospace,SF Mono,Menlo,Consolas,monospace;display:block}.tk-facts{border-top:1px solid var(--tk-line);gap:0;margin:0;display:grid}.tk-facts>div{border-bottom:1px solid var(--tk-line);grid-template-columns:200px minmax(0,1fr);gap:16px;padding:14px 0;display:grid}.tk-facts dt{font-weight:700}.tk-facts dd{color:var(--tk-ink-2);overflow-wrap:anywhere;margin:0}.tk-facts code{background:var(--tk-sunk);border-radius:6px;padding:2px 6px;font:14px/1.4 ui-monospace,Menlo,monospace}.tk-embed{background:var(--tk-paper);min-height:100vh;padding:12px}.tk-widget{gap:12px;max-width:640px;margin:0 auto;display:grid}.tk-widget-head{gap:10px;display:grid}.tk-widget-kicker{color:var(--tk-ink-2);margin:0;font-size:14px}.tk-widget-kicker strong{color:var(--tk-ink)}.tk-progress{grid-template-columns:repeat(3,1fr);gap:6px;margin:0;padding:0;list-style:none;display:grid}.tk-progress li{background:var(--tk-line);border-radius:999px;height:8px;transition:background-color .3s}.tk-progress li[data-state=now]{background:#5665f059}.tk-progress li[data-state=right]{background:var(--tk-blue)}.tk-progress li[data-state=done]{background:var(--tk-ink-2)}.tk-widget .tk-card{gap:14px;padding:22px;animation:.28s both tk-in;display:grid}.tk-chip{background:var(--tk-sunk);color:var(--tk-ink-2);border-radius:999px;justify-self:start;margin:0;padding:4px 10px;font-size:13px;font-weight:700}.tk-chip[data-level=stretch]{background:var(--tk-blue-soft);color:var(--tk-blue-ink)}.tk-q-title{font-family:var(--tk-ui);margin:0;font-size:20px;font-weight:500;line-height:1.4}.tk-answer{gap:12px;display:grid}.tk-field{border:2px solid var(--tk-line-2);border-radius:var(--tk-radius-s);background:var(--tk-surface);align-items:center;gap:8px;min-height:52px;padding:0 14px;transition:border-color .15s,background-color .15s;display:flex}.tk-field:focus-within{border-color:var(--tk-blue)}.tk-field[data-status=right]{border-color:var(--tk-blue);background:var(--tk-blue-soft)}.tk-field[data-status=wrong]{border-color:var(--tk-amber);background:var(--tk-amber-soft);animation:.32s tk-shake}.tk-input{min-width:0;min-height:48px;font:inherit;color:var(--tk-ink);background:0 0;border:0;outline:none;flex:1;font-size:18px}.tk-affix{color:var(--tk-ink-2);font-weight:700}.tk-actions{flex-wrap:wrap;gap:10px;display:flex}.tk-feedback:empty{display:none}.tk-feedback p{margin:0;font-size:16px}.tk-right strong{color:var(--tk-blue-ink)}.tk-wrong strong{color:var(--tk-amber-ink)}.tk-steps{border-radius:var(--tk-radius);background:var(--tk-sunk);gap:8px;margin:10px 0 0;padding:14px 16px;font-size:16px;display:grid}.tk-steps ol{gap:6px;margin:0;padding-left:20px;display:grid}.tk-feedback .tk-steps-answer{font-weight:700}.tk-done{text-align:center;justify-items:center}.tk-done-score{font-family:var(--tk-head);color:var(--tk-ink-2);margin:0;font-size:56px;line-height:1}.tk-done-score strong{color:var(--tk-blue);font-weight:500}.tk-done-line{color:var(--tk-ink-2);margin:0;font-size:15px}.tk-widget-foot{justify-content:flex-end;display:flex}.tk-widget-foot a{font-family:var(--font-wordmark,"Chakra Petch", Arial, sans-serif);color:var(--tk-ink-2);font-size:14px;font-weight:700;text-decoration:none}@keyframes tk-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@keyframes tk-shake{0%,to{transform:none}25%{transform:translate(-4px)}75%{transform:translate(4px)}}.tk-bulletin{grid-template-columns:minmax(0,300px) minmax(0,1fr);align-items:start;gap:32px;margin-top:36px;display:grid}.tk-controls{gap:22px;display:grid;position:sticky;top:96px}.tk-insert{background:var(--tk-surface);border:2px solid var(--tk-ink);border-radius:var(--tk-radius-xl);gap:14px;max-width:620px;padding:28px;display:grid;position:relative}.tk-insert-top{color:var(--tk-ink-2);flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px;font-size:14px;font-weight:700;display:flex}.tk-insert h2{font-family:var(--tk-head);margin:0;font-size:30px;font-weight:500;line-height:1.1}.tk-insert p{margin:0}.tk-puzzle{border-radius:var(--tk-radius);background:var(--tk-blue-soft);gap:6px;padding:16px 18px;display:grid}.tk-puzzle b{color:var(--tk-blue-ink)}.tk-puzzle-answer{color:var(--tk-ink-2);text-align:left;transform-origin:50%;margin:10px 0 0;font-size:13px;transform:rotate(180deg)}.tk-insert-link{border-top:1px solid var(--tk-line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding-top:12px;font-size:15px;display:flex}.tk-insert-link strong{font-size:17px}.tk-insert-by{font-family:var(--font-wordmark,"Chakra Petch", Arial, sans-serif);font-weight:700}.tk-insert-by span{color:#0b6b34}.tk-library{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:0;padding:0;list-style:none;display:grid}.tk-library button{text-align:left;border:2px solid var(--tk-line);border-radius:var(--tk-radius);background:var(--tk-surface);width:100%;min-height:64px;font:inherit;color:var(--tk-ink);cursor:pointer;gap:2px;padding:12px 14px;display:grid}.tk-library button[aria-pressed=true]{border-color:var(--tk-blue);background:var(--tk-blue-soft)}.tk-library small{color:var(--tk-ink-2);font-size:13px;font-weight:700}.tk-library span{font-size:15px;font-weight:700}@media (max-width:900px){.tk-grid{grid-template-columns:1fr}.tk-tile{min-height:0}.tk-split,.tk-bulletin{grid-template-columns:1fr}.tk-controls{position:static}}@media (max-width:560px){.tk-main{padding:28px 16px 72px}.tk-bar{padding:8px 8px 0}.tk-bar-inner{gap:6px;padding:8px 12px}.tk-bar .ug-lockup-subject{display:none}.tk-bar{position:static}.tk-bar-inner{border-radius:24px;flex-wrap:wrap}.tk-bar nav{flex-wrap:nowrap;justify-content:space-between;gap:0;width:100%}.tk-bar nav a{white-space:nowrap;padding:6px 8px;font-size:14px}.tk-lead{font-size:17px}.tk-facts>div{grid-template-columns:1fr;gap:4px}.tk-insert{padding:20px}.tk-insert h2{font-size:26px}.tk-library{grid-template-columns:1fr}.tk-embed{padding:8px}.tk-widget .tk-card{padding:18px}.tk-q-title{font-size:18px}}@media (prefers-reduced-motion:reduce){.tk-widget .tk-card,.tk-field[data-status=wrong]{animation:none}.tk-btn,.tk-tile,.tk-progress li{transition:none}.tk-btn:active,.tk-tile:active{transform:none}}@media print{@page{size:A4;margin:14mm}html,body{--lightningcss-light:initial!important;--lightningcss-dark: !important;color-scheme:light!important;background:#fff!important}.tk{background:#fff;min-height:0}.tk-bar,.tk-main>.tk-kicker,.tk-main>.tk-h1,.tk-main>.tk-lead,.tk-controls,.tk-bulletin .tk-section,nextjs-portal{display:none!important}.tk-main{max-width:none;padding:0}.tk-bulletin{margin:0;display:block}.tk-print{gap:10mm;display:grid}.tk-insert{max-width:none;box-shadow:none;break-inside:avoid;border-width:1.5pt}.tk-puzzle{-webkit-print-color-adjust:exact;print-color-adjust:exact;background:#eef0fe}}.tk-starts{gap:12px;margin:0;padding:0;list-style:none;display:grid}.tk-start{background:var(--tk-surface);border:2px solid var(--tk-line);border-radius:var(--tk-radius-xl);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px;display:flex}.tk-start h3{margin:0;font-size:18px}.tk-start p{color:var(--tk-ink-2);margin:2px 0 0;font-size:15px}.tk-note{color:var(--tk-ink-2);margin:16px 0 0;font-size:16px}