.player{background:var(--bg);grid-template-rows:auto 1fr auto;height:calc(100dvh - 56px);min-height:560px;display:grid}.player-top{border-bottom:1px solid var(--line);background:var(--surface);align-items:center;gap:20px;min-width:0;padding:10px 20px;display:flex}.player-top .back{color:var(--ink);white-space:nowrap;align-items:center;gap:6px;font-size:15px;font-weight:600;display:inline-flex}.player-top .back svg{flex:none;width:16px;height:16px}.player-top .back span{text-overflow:ellipsis;overflow:hidden}.player-top .back:hover{color:var(--accent-dk)}.player-top .crumb{font-family:inherit;font-size:15px;font-weight:400;line-height:inherit;letter-spacing:normal;color:var(--ink-2);white-space:nowrap;text-overflow:ellipsis;min-width:0;margin:0;overflow:hidden}.dots{gap:6px;margin-left:auto;list-style:none;display:flex}.dot{border:2px solid var(--line-2);width:12px;height:12px;transition:all .3s var(--ease);background:#fff;border-radius:50%;display:block}.dot.is-done{background:var(--ok);border-color:var(--ok)}.dot.is-here{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.counts{color:var(--ink-3);white-space:nowrap;gap:14px;font-size:14px;display:flex}.counts b{color:var(--ink)}.player-body{grid-template-columns:360px minmax(0,1fr);min-height:0;display:grid}.task{border-right:1px solid var(--line);flex-direction:column;padding:24px;display:flex;overflow:auto}.task h2{font-size:26px}.task .prompt{color:var(--ink-2);margin-top:10px;font-size:16px}.steps{counter-reset:s;margin-top:14px;list-style:none}.steps li{counter-increment:s;color:var(--ink-2);padding:5px 0 5px 34px;font-size:15.5px;line-height:1.45;position:relative}.steps li:before{content:counter(s);background:var(--accent-soft);width:22px;height:22px;color:var(--accent-dk);border-radius:50%;place-items:center;font-size:12px;font-weight:700;display:grid;position:absolute;top:6px;left:0}.hints,.why{border:1px solid var(--line);color:var(--ink-2);border-radius:8px;margin-top:18px;padding:12px 14px;font-size:15px}.hints{background:var(--hint-soft);border-color:#f0dcae}.hints>p,.why>p:first-child{text-transform:uppercase;letter-spacing:.04em;color:var(--hint);margin-bottom:4px;font-size:12px;font-weight:700}.why>p:first-child{color:var(--ok)}.hints ol{padding-left:18px}.hints li+li{margin-top:4px}.why{background:var(--ok-soft);border-color:#c4e6d1}.task code{overflow-wrap:anywhere}.notes{border-top:1px solid var(--line);color:var(--ink-2);margin-top:18px;padding-top:12px;font-size:14.5px}.notes summary{cursor:pointer;color:var(--accent-dk);padding:2px 0;font-size:14px;font-weight:600}.notes summary:hover{color:var(--ink)}.notes-body{margin-top:8px;line-height:1.55}.notes-body p+p,.notes-body ul,.notes-body ol{margin-top:8px}.notes-body ul,.notes-body ol{padding-left:18px}.notes-body+.notes-body{border-top:1px dashed var(--line);margin-top:12px;padding-top:12px}.notes-body h2,.notes-body h3,.notes-body h4{letter-spacing:.02em;color:var(--ink);margin-top:12px;font-family:inherit;font-size:13px;font-weight:700;line-height:1.4}.notes-body>:first-child{margin-top:0}.notes-brief h2+p,.notes-brief h3+p{margin-top:2px}.notes-example{background:var(--surface);font:12.5px/1.6 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere;color:var(--ink);border-radius:6px;margin-top:10px;padding:9px 11px}.notes-example code{font:inherit;color:inherit;background:0 0;border:0;padding:0}.task-details{color:var(--ink-2);margin-top:14px;font-size:14.5px}.task-details pre{background:var(--surface);font:12.5px/1.6 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere;color:var(--ink);border-radius:6px;margin:6px 0 0;padding:9px 11px}.task-details pre code{font:inherit;color:inherit;background:0 0;border:0;padding:0}.task-details p+pre,.task-details pre+p{margin-top:8px}.task-details p strong{color:var(--ink)}.notes-caption{color:var(--ink-3);margin-top:6px;font-size:13px}.task .extras{flex-wrap:wrap;gap:18px;margin-top:auto;padding-top:18px;display:flex}.tool{background:#fff;flex-direction:column;min-width:0;min-height:0;display:flex;position:relative;overflow:hidden}.tool>*{flex:1;min-height:0}.tool-loading{color:var(--ink-3);place-items:center;font-size:15px;display:grid}.player-status{border-top:1px solid var(--line);background:var(--surface);align-items:center;gap:14px;padding:12px 20px;display:flex}.player-status .state{flex:1}.player-status .btn{min-width:160px;height:44px}.finish{animation:rise .5s var(--ease);flex-direction:column;gap:12px;display:flex}.finish h2{font-size:28px}.finish p{color:var(--ink-2)}.finish .saved{color:var(--ink-3);font-size:14px}.finish .btn{white-space:normal;text-align:left;align-self:flex-start;max-width:100%;height:auto;min-height:48px;margin-top:4px;padding-block:10px}.finish .link{align-self:flex-start}.finish-mark{background:var(--ok);border-radius:50%;place-items:center;width:44px;height:44px;display:grid}.finish-mark svg{color:#fff;width:22px;height:22px}@keyframes rise{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.gx-act{flex:none;align-items:center;gap:12px;display:flex}.gx-gain{display:inline-flex;position:relative}.gx-chip{height:30px;color:var(--accent-dk);background:var(--accent-soft);white-space:nowrap;font-variant-numeric:tabular-nums;animation:gx-pop .45s var(--ease) both;border-radius:999px;align-items:baseline;gap:5px;padding:0 11px;font-size:14px;font-weight:500;line-height:30px;display:inline-flex}.gx-chip b{font-size:15px;font-weight:700}.gx-chip.is-none{color:var(--ink-3);background:var(--surface-2);font-size:13px}.gx-fly{font:700 18px var(--font);color:var(--accent-dk);pointer-events:none;opacity:0;animation:gx-fly 1.1s var(--ease) 80ms both;font-variant-numeric:tabular-nums;position:absolute;bottom:100%;right:8px}@keyframes gx-pop{0%{opacity:0;transform:scale(.86)}to{opacity:1;transform:none}}@keyframes gx-fly{0%{opacity:0;filter:blur(2px);transform:translateY(8px)}25%{opacity:1;filter:none}to{opacity:0;transform:translateY(-34px)}}.gx-draw{stroke-dasharray:24;stroke-dashoffset:24px;animation:gx-draw .5s var(--ease) .15s forwards}@keyframes gx-draw{to{stroke-dashoffset:0}}@media (prefers-reduced-motion:reduce){.gx-draw{stroke-dashoffset:0}.gx-fly{display:none}}.gx-cele{flex-direction:column;gap:12px;margin-top:2px;display:flex}.gx-sum{border:1px solid var(--line);background:var(--surface);border-radius:10px;grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.gx-sum>div{min-width:0;padding:10px 12px}.gx-sum>div+div{border-left:1px solid var(--line)}.gx-sum dt{color:var(--ink-3);font-size:12px;font-weight:600}.gx-sum dd{font:700 24px/1.2 var(--font-display);color:var(--ink);font-variant-numeric:tabular-nums;white-space:nowrap}.gx-sum dd small{font:500 13px var(--font);color:var(--ink-3)}.gx-sum>div:first-child dd{color:var(--accent-dk)}.gx-meter{background:var(--line);border-radius:2px;height:4px;margin-top:6px;display:block;overflow:hidden}.gx-meter i{border-radius:inherit;background:var(--accent);transform-origin:0;height:100%;animation:gx-grow .9s var(--ease) .2s both;display:block}@keyframes gx-grow{0%{transform:scaleX(0)}}.finish .gx-goal{color:var(--ok);font-size:14px;font-weight:600}.gx-new{flex-direction:column;gap:8px;list-style:none;display:flex}.gx-new li{border:1px solid var(--line);animation:rise .5s var(--ease) both;background:#fff;border-radius:10px;align-items:center;gap:12px;padding:10px 12px;display:flex;box-shadow:0 1px 2px #1011140d,0 6px 16px #1011140f}.gx-new .gx-em{flex:none;display:grid}.gx-new b{color:var(--ink);font-size:15px;font-weight:600;line-height:1.3;display:block}.gx-new small{color:var(--ink-3);font-size:13px;line-height:1.4;display:block}.finish .gx-note{color:var(--ink-2);font-size:14px}@media (width<=900px){.player{grid-template-rows:auto auto auto;height:auto}.player-top .crumb{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.player-body{grid-template-columns:1fr}.task{border-right:0;border-bottom:1px solid var(--line)}.tool{min-height:460px}.player-status{z-index:5;flex-wrap:wrap;position:sticky;bottom:0}.player-status .state{flex-basis:100%}.player-status .gx-act,.player-status .btn{flex:1}}@media (width<=600px){.player-top{flex-wrap:wrap;gap:8px 12px;padding:10px 16px}.player-top .back{flex:auto;min-width:0}.dots{flex-wrap:wrap;flex-basis:100%;order:3;margin-left:0}.counts{margin-left:auto}.counts .cw{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.counts .streak{display:none}.player-status{padding:10px 16px}.player-status .btn{min-width:0}.gx-sum dd{font-size:21px}}.guide{z-index:900;pointer-events:none;position:fixed;inset:0}.guide-shield{pointer-events:auto;position:absolute;inset:0}.guide-ring{box-shadow:0 0 0 2.5px var(--accent), 0 0 0 7px color-mix(in srgb, var(--accent) 20%, transparent);border-radius:6px;transition:left .45s cubic-bezier(.2,.8,.2,1),top .45s cubic-bezier(.2,.8,.2,1),width .45s cubic-bezier(.2,.8,.2,1),height .45s cubic-bezier(.2,.8,.2,1);animation:1.1s ease-in-out infinite alternate guide-pulse;position:fixed}@keyframes guide-pulse{to{box-shadow:0 0 0 2.5px var(--accent), 0 0 0 12px color-mix(in srgb, var(--accent) 8%, transparent)}}.guide-tag{background:var(--ink);color:#fff;border-radius:8px;max-width:330px;padding:8px 12px;font-size:14px;line-height:1.45;transition:left .45s cubic-bezier(.2,.8,.2,1),top .45s cubic-bezier(.2,.8,.2,1);position:fixed;box-shadow:0 8px 24px #10111438}.guide-tag.above{transform:translateY(-100%)}.guide-tag code,.guide-bar code{color:#fff;background:#ffffff24;border-radius:4px;padding:1px 5px;font-size:.92em}.guide-pointer{width:28px;height:28px;margin:-3px 0 0 -4px;transition:transform .7s cubic-bezier(.3,.7,.2,1);position:fixed;top:0;left:0;overflow:visible}.guide-pointer path{fill:#fff;stroke:var(--ink);stroke-width:1.5px;stroke-linejoin:round;filter:drop-shadow(0 3px 5px #10111459)}.guide-pointer .tap{transform-origin:4px 3px;animation:.3s ease-out .55s guide-tap}@keyframes guide-tap{50%{transform:scale(.8)}}.guide-bar{pointer-events:auto;background:var(--ink);color:#fff;border-radius:14px;align-items:center;gap:14px;width:max-content;max-width:min(900px,100vw - 24px);padding:10px 10px 10px 18px;display:flex;position:fixed;top:14px;left:50%;translate:-50%;box-shadow:0 14px 40px #1011144d}.guide-bar:focus{outline:none}.guide-bar p{min-width:0;font-size:14.5px;line-height:1.45}.guide-bar p span{letter-spacing:.02em;color:#aeb6d6;font-size:12px;font-weight:600;display:block}.guide-actions{flex:none;gap:6px;display:flex}.guide-bar button{color:var(--ink);background:#fff;border-radius:9px;padding:8px 12px;font-size:13.5px;font-weight:600}.guide-bar button.quiet{color:#dfe3f5;background:0 0;box-shadow:inset 0 0 0 1px #ffffff47}.guide-bar button:hover{filter:brightness(.94)}.guide-bar button.quiet:hover{filter:none;background:#ffffff14}@media (width<=760px){.guide-bar{flex-wrap:wrap;gap:8px;width:calc(100vw - 16px);padding:10px;top:8px}.guide-actions{flex-wrap:wrap}.guide-bar button{padding:8px 10px}}@media (prefers-reduced-motion:reduce){.guide-ring,.guide-pointer,.guide-tag{transition:none;animation:none}.guide-pointer .tap{animation:none}}