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strong{background:var(--rk-green-100);min-width:30px;height:30px;color:var(--rk-green-850);border-radius:999px;place-items:center;font-size:.9rem;display:grid}.rk-filter-button[aria-pressed=true]{border-color:var(--rk-green-950);background:var(--rk-green-850);color:#fff;box-shadow:0 0 0 3px #123f2b24, var(--rk-shadow-sm)}.rk-filter-button[aria-pressed=true] strong{color:#fff;background:#ffffff2e}.rk-catalog-groups{gap:28px;display:grid}.rk-catalog-group{gap:14px;scroll-margin-top:90px;display:grid}.rk-catalog-group h3{border-left:4px solid var(--track-color,var(--rk-green-700));color:var(--rk-ink);margin:0;padding-left:12px;font-size:1.25rem;font-weight:900}.rk-catalog-grid{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;display:grid}.rk-catalog-card{border:1px solid var(--rk-line);border-radius:var(--rk-radius);min-height:245px;box-shadow:var(--rk-shadow-sm);background:#fff;flex-direction:column;gap:13px;padding:18px;display:flex}.rk-catalog-meta,.rk-catalog-tags{flex-wrap:wrap;gap:7px;display:flex}.rk-grade-pill,.rk-catalog-tags span{background:var(--rk-soft);color:var(--rk-green-950);border-radius:999px;align-items:center;padding:4px 8px;font-size:.76rem;font-weight:850;line-height:1.2;display:inline-flex}.rk-catalog-tags span{color:var(--rk-muted);background:#f6f8f7}.rk-catalog-copy{gap:5px;display:grid}.rk-catalog-copy h4{color:var(--rk-ink);margin:0;font-size:1.12rem;font-weight:950;line-height:1.28}.rk-catalog-copy p{color:var(--rk-muted);margin:0;font-weight:700;line-height:1.35}.rk-plan-note{border-left:4px solid var(--rk-blue);border-radius:var(--rk-radius-sm);color:#24365f;background:#f4f7ff;gap:3px;padding:10px 12px;font-size:.86rem;font-weight:750;display:grid}.rk-plan-note strong{color:#163174;font-weight:950}.rk-catalog-action{border-radius:var(--rk-radius-sm);background:var(--rk-yellow);width:100%;min-height:42px;color:var(--rk-green-950);cursor:pointer;border:0;justify-content:center;align-self:stretch;align-items:center;margin-top:auto;padding:9px 12px;font-weight:900;text-decoration:none;display:inline-flex;box-shadow:0 4px #b89709}.rk-catalog-action-secondary{color:var(--rk-green-850);box-shadow:inset 0 0 0 1.5px var(--rk-line), var(--rk-shadow-sm);background:#fff}.rk-catalog-action-disabled{color:#66746d;box-shadow:none;cursor:not-allowed;background:#eef1ef}.rk-track-section{gap:12px;scroll-margin-top:90px;display:grid}.rk-lab-row{border-radius:var(--rk-radius-sm);background:#f8fbf8;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;padding:14px 16px;display:grid}.rk-lab-number{background:var(--rk-green-100);width:32px;height:32px;color:var(--rk-green-950);border-radius:999px;place-items:center;font-weight:900;display:grid}.rk-lab-title{margin:0;font-weight:900;line-height:1.25}.rk-lab-description{color:var(--rk-muted);margin:3px 0 0;font-size:.94rem;font-weight:650}.rk-lab-action{border-radius:var(--rk-radius-sm);background:var(--rk-yellow);min-height:38px;color:var(--rk-green-950);justify-content:center;align-items:center;padding:8px 13px;font-size:.86rem;font-weight:850;text-decoration:none;display:inline-flex}.rk-bottom-nav a{min-height:60px;color:var(--rk-muted);text-align:center;place-items:center;padding:7px 4px;font-size:.72rem;font-weight:800;line-height:1.15;text-decoration:none;display:grid}.rk-bottom-nav a[aria-current=page]{color:var(--rk-green-950);background:var(--rk-yellow-soft)}.rk-form-grid{gap:10px;display:grid}.rk-label{color:#173b2a;gap:5px;font-weight:800;display:grid}.rk-input{border:1px solid var(--rk-line);border-radius:var(--rk-radius);width:100%;min-height:42px;color:var(--rk-ink);background:#fff;padding:9px 10px;font-weight:650}.rk-surprise-hero{border-radius:var(--rk-radius);box-shadow:var(--rk-shadow-sm);background:linear-gradient(135deg,#f5d84c6b,#fff0 44%),linear-gradient(120deg,#fff 0%,#f4fbf8 54%,#eaf2ff 100%);gap:22px;padding:clamp(24px,4vw,44px);display:grid;overflow:hidden}.rk-surprise-strip{border-radius:var(--rk-radius);background:var(--rk-yellow-soft);box-shadow:var(--rk-shadow-sm);border:1px solid #f5d84cd1;grid-template-columns:1fr auto;align-items:center;gap:18px;padding:18px;display:grid}.rk-surprise-strip h2{margin:0;font-size:1.35rem;font-weight:900;line-height:1.25}.rk-surprise-strip p{color:var(--rk-muted);margin:4px 0 0;font-weight:700}.rk-mission-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;display:grid}.rk-mission-card{border:1px solid var(--rk-line);border-radius:var(--rk-radius);min-height:230px;box-shadow:var(--rk-shadow-sm);background:#fff;align-content:start;gap:14px;padding:18px;display:grid}.rk-mission-card-done{background:linear-gradient(#f3fbf5,#fff);border-color:#1573487a}.rk-mission-card h3{margin:10px 0 4px;font-size:1.25rem;font-weight:900;line-height:1.25}.rk-mission-card p{color:var(--rk-muted);margin:0;font-weight:700}.rk-mission-step{background:var(--rk-green-850);color:#fff;border-radius:12px;place-items:center;width:36px;height:36px;font-weight:900;display:grid}.rk-progress-summary{border:1px solid var(--rk-line);border-radius:var(--rk-radius-sm);background:#fbfffc;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;padding:12px 14px;display:flex}.rk-progress-summary button{color:var(--rk-green-850);cursor:pointer;background:0 0;border:0;font-weight:900;text-decoration:underline}.rk-progress-button{border:1px solid var(--rk-line);border-radius:var(--rk-radius-sm);width:fit-content;min-height:40px;color:var(--rk-green-850);cursor:pointer;background:#fff;justify-content:center;align-items:center;padding:8px 12px;font-size:.88rem;font-weight:900;display:inline-flex}.rk-progress-button[aria-pressed=true]{background:var(--rk-green-850);color:#fff;border-color:#15734859}.rk-progress-button-wide{justify-content:center;width:100%}.rk-mini-tag{color:#244176;background:#edf1ff;border-radius:999px;align-items:center;padding:4px 9px;font-size:.78rem;font-weight:850;line-height:1.2;display:inline-flex}.rk-tile-vault{border-radius:var(--rk-radius);box-shadow:var(--rk-shadow-sm);background:#fff;gap:22px;padding:clamp(22px,3.5vw,38px);display:grid}.rk-target-row{flex-wrap:wrap;gap:8px;display:flex}.rk-target-button{border:1px solid var(--rk-line);background:var(--rk-soft);min-height:40px;color:var(--rk-green-950);cursor:pointer;border-radius:999px;padding:7px 13px;font-weight:850}.rk-target-button-active{background:var(--rk-yellow);border-color:#b89709}.rk-vault-layout{grid-template-columns:minmax(220px,.7fr) minmax(280px,1fr);align-items:start;gap:18px;display:grid}.rk-control-stack{gap:14px;display:grid}.rk-range-control{border:1px solid var(--rk-line);border-radius:var(--rk-radius-sm);background:var(--rk-soft);color:var(--rk-ink);gap:8px;padding:14px;font-weight:850;display:grid}.rk-range-control span{justify-content:space-between;gap:12px;display:flex}.rk-range-control input{width:100%;accent-color:var(--rk-green-700)}.rk-formula-panel{border:1px solid var(--rk-line);border-radius:var(--rk-radius-sm);background:#fbfffc;gap:5px;padding:16px;display:grid}.rk-formula-panel strong{font-size:clamp(1.25rem,4vw,2rem);line-height:1.15}.rk-vault-success{color:var(--rk-green-850);font-weight:900}.rk-vault-board{border:1px solid var(--rk-line);border-radius:var(--rk-radius);background:linear-gradient(#f6fbff,#fff);gap:12px;padding:16px;display:grid}.rk-vault-door{justify-content:center;display:flex}.rk-vault-door span{background:var(--rk-green-850);color:#fff;border-radius:999px;padding:6px 13px;font-weight:900}.rk-tile-grid{gap:4px;width:100%;max-width:520px;margin:0 auto;display:grid}.rk-tile-cell{aspect-ratio:1;background:linear-gradient(135deg,#ffffffbf,#fff0),#dff1e6;border:1px solid #cfe0d6;border-radius:7px}.rk-computing-layout{grid-template-columns:minmax(260px,.75fr) minmax(280px,1fr);align-items:stretch;gap:18px;display:grid}.rk-maze-grid{border:1px solid var(--rk-line);border-radius:var(--rk-radius);background:#f6f8ff;grid-template-columns:repeat(5,minmax(42px,1fr));gap:6px;padding:14px;display:grid}.rk-maze-cell{aspect-ratio:1;border-radius:12px;place-items:center;font-weight:900;display:grid}.rk-maze-path{background:#fff;border:1px dashed #c8d2ed}.rk-maze-wall{background:#20344a}.rk-maze-start{background:var(--rk-yellow);color:var(--rk-green-950)}.rk-maze-goal{background:var(--rk-purple);color:#fff}.rk-parent-prompt{border-left:5px solid var(--rk-yellow);border-radius:var(--rk-radius-sm);box-shadow:var(--rk-shadow-sm);background:#fff;padding:14px 16px;font-weight:850}.rk-choice-list{gap:8px;display:grid}.rk-choice-button{border:1px solid var(--rk-line);border-radius:var(--rk-radius-sm);width:100%;color:var(--rk-ink);text-align:left;cursor:pointer;background:#fff;grid-template-columns:auto 1fr;align-items:start;gap:10px;padding:11px 13px;display:grid}.rk-choice-button span{background:var(--rk-green-100);min-width:28px;height:28px;color:var(--rk-green-950);border-radius:999px;place-items:center;font-weight:900;line-height:1;display:grid}.rk-choice-button strong{font-weight:850;line-height:1.45}.rk-choice-button:hover{background:#fbfffc;border-color:#15734870}.rk-choice-correct{background:#e7f6ed;border-color:#15734894}.rk-choice-correct span{background:var(--rk-green-850);color:#fff}.rk-choice-wrong{background:#fff1ef;border-color:#b4231880}.rk-choice-wrong span{background:var(--rk-danger);color:#fff}.rk-answer-feedback{border-radius:var(--rk-radius-sm);gap:4px;padding:12px 14px;font-weight:750;display:grid}.rk-answer-feedback p{margin:0}.rk-answer-feedback-correct{color:var(--rk-green-950);background:#e7f6ed;border:1px solid #15734866}.rk-answer-feedback-wrong{color:#541b16;background:#fff5f3;border:1px solid #b4231852}.rk-answer-reset{width:fit-content;color:var(--rk-green-850);cursor:pointer;background:0 0;border:0;padding:4px 0 0;font-weight:900;text-decoration:underline}summary{color:var(--rk-green-850);cursor:pointer;font-weight:900}@media (min-width:760px){.rk-shell{padding-bottom:48px}.rk-bottom-nav{display:none}}@media (max-width:760px){.rk-shell{width:min(100% - 24px,1120px);padding-bottom:96px}.rk-topbar{flex-direction:column;align-items:flex-start;margin-left:0;margin-right:0;position:static}.rk-nav{justify-content:flex-start;width:100%}.rk-nav a{background:#ffffff1a}.rk-lab-row{grid-template-columns:auto 1fr}.rk-lab-action{grid-column:2;justify-self:start}.rk-surprise-strip,.rk-vault-layout,.rk-computing-layout{grid-template-columns:1fr}.rk-catalog-intro,.rk-catalog-heading{flex-direction:column;align-items:start}.rk-catalog-summary{text-align:left;width:100%}.rk-surprise-strip .rk-button{justify-self:start}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@property --tw-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-z{syntax:"*";inherits:false;initial-value:0}