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rgba(2, 8, 51, .7);--tf-elevation-card-light: 0 1px 2px rgba(22, 25, 58, .06);--tf-elevation-raised-light: 0 12px 32px rgba(22, 25, 58, .1);--tf-elevation-modal-light: 0 32px 80px rgba(22, 25, 58, .18);--tf-glow-teal: 0 0 0 3px rgba(46, 230, 214, .22);--tf-glow-teal-soft: 0 0 16px rgba(46, 230, 214, .35);--tf-blur-glass: blur(6px);--tf-scrim-night: linear-gradient(90deg, rgba(5, 6, 26, .92) 0%, rgba(5, 6, 26, .55) 45%, rgba(5, 6, 26, .2) 100%);--tf-scrim-night-radial: radial-gradient(80% 70% at 50% 40%, rgba(10, 12, 36, .25) 0%, rgba(10, 12, 36, .9) 100%)}:root{--tf-duration-fast: .15s;--tf-duration-base: .24s;--tf-duration-slow: .4s;--tf-duration-drift: 60s;--tf-ease-standard: cubic-bezier(.4, 0, .2, 1);--tf-ease-out: cubic-bezier(.17, .55, .55, 1);--tf-ease-in-out: ease-in-out;--tf-lift-hover: translateY(-2px);--tf-press: scale(.985)}@keyframes tf-drift{0%{transform:translateZ(0)}50%{transform:translate3d(-18px,10px,0)}to{transform:translateZ(0)}}@keyframes tf-twinkle{0%,to{opacity:.35}50%{opacity:.9}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}*,*:before,*:after{box-sizing:border-box}body{margin:0;background:var(--tf-surface-page);color:var(--tf-text-body);font-family:var(--tf-font-sans);font-size:var(--tf-text-m);line-height:var(--tf-leading-normal);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-wrap:pretty}h1,h2,h3{font-family:var(--tf-font-display);color:var(--tf-text-heading);font-weight:var(--tf-weight-bold);letter-spacing:var(--tf-tracking-display);line-height:var(--tf-leading-tight);margin:0}a{color:var(--tf-accent);text-decoration:none;transition:color var(--tf-duration-fast) 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var(--tf-space-4)}.sign-in-explainer{font-size:var(--tf-text-s);line-height:var(--tf-leading-relaxed);color:var(--tf-text-body);max-width:var(--tf-measure-prose)}.sign-in-doors{display:flex;flex-wrap:wrap;gap:var(--tf-space-3);align-items:center}.sign-in-create{background:transparent;color:var(--tf-text-body);border-color:var(--tf-text-faint)}.sign-in-create:hover:not([disabled]){background:transparent;border-color:var(--tf-accent);color:var(--tf-text-heading)}.conference-code-heading{font-family:var(--tf-font-sans);font-size:var(--tf-text-l);font-weight:var(--tf-weight-semibold);color:var(--tf-text-heading);margin:0 0 var(--tf-space-3)}.conference-code-form{display:flex;flex-direction:column;gap:var(--tf-space-4)}.conference-code-field{display:flex;flex-direction:column;gap:var(--tf-space-2);max-width:var(--tf-measure-prose)}.conference-code-field__label{font-size:var(--tf-text-s);font-weight:var(--tf-weight-semibold);color:var(--tf-text-heading)}.conference-code-field__hint{font-size:var(--tf-text-s);line-height:var(--tf-leading-relaxed);color:var(--tf-text-body)}.conference-code-input{font:inherit;font-size:var(--tf-text-m);min-height:44px;padding:var(--tf-space-3) var(--tf-space-4);border:1px solid var(--tf-text-faint);border-radius:var(--tf-radius-m);background:var(--tf-surface-sunken);color:var(--tf-text-body)}.conference-code-input:focus-visible{border-color:var(--tf-accent)}.conference-code-input[disabled]{opacity:.45}.conference-code-continue,.conference-code-retry{background:transparent;color:var(--tf-text-body);border-color:var(--tf-text-faint)}.conference-code-continue:hover:not([disabled]),.conference-code-retry:hover:not([disabled]){background:transparent;border-color:var(--tf-accent);color:var(--tf-text-heading)}.session-strip{display:flex;flex-wrap:wrap;align-items:center;gap:var(--tf-space-3);margin:0;padding:var(--tf-space-3) var(--tf-space-6);font-size:var(--tf-text-s);line-height:var(--tf-leading-relaxed);color:var(--tf-text-muted);border-bottom:1px solid var(--tf-border-default)}.session-ending{border-left:3px solid var(--tf-status-soon);border-bottom:1px solid var(--tf-border-default);border-radius:0 var(--tf-radius-s) var(--tf-radius-s) 0;background:var(--tf-surface-sunken);color:var(--tf-learner-soon-ink)}.session-ending-bar{position:fixed;left:0;right:0;bottom:0;z-index:30;padding-top:0;padding-bottom:env(safe-area-inset-bottom,0px);padding-left:env(safe-area-inset-left,0px);padding-right:env(safe-area-inset-right,0px);background:var(--tf-surface-sunken);border-top:1px solid var(--tf-text-body)}.session-ending-bar .session-strip{border-bottom:0;border-radius:0}.session-ending-spacer{height:var(--tf-session-ending-bar-height, calc(10rem + env(safe-area-inset-bottom, 0px)) )}.session-ending-bar~.tutorial .lab-panel--drawer{padding-bottom:var(--tf-session-ending-bar-height, calc(10rem + env(safe-area-inset-bottom, 0px)) )}@media(max-width:40rem){.session-ending-bar .session-strip{padding:var(--tf-space-2) var(--tf-space-4);gap:var(--tf-space-2);font-size:var(--tf-text-xs);line-height:var(--tf-leading-normal)}.session-ending-bar .session-strip__state{display:none}.session-ending-bar .stay-signed-in,.session-ending-bar .sign-out{flex:1 1 0;min-height:44px}}.identity-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--tf-space-2)}.identity{display:grid;grid-template-columns:1fr auto;align-items:center;gap:var(--tf-space-1) var(--tf-space-4);padding:var(--tf-space-3) var(--tf-space-4);border:1px solid var(--tf-border-subtle);border-radius:var(--tf-radius-s);background:var(--tf-surface-sunken)}.identity-name{font-size:var(--tf-text-m);font-weight:var(--tf-weight-semibold);color:var(--tf-text-heading)}.identity-role{grid-column:1;font-family:var(--tf-font-mono);font-size:var(--tf-label-s);letter-spacing:var(--tf-tracking-label);text-transform:uppercase;color:var(--tf-text-faint)}.identity-choose{grid-column:2;grid-row:1 / span 2}@media(max-width:60rem){.docs-article{padding:var(--tf-space-5)}.landing,.tutorial,.sign-in{padding:var(--tf-space-6) var(--tf-space-5) var(--tf-space-10)}.tutorial-card{max-width:none}.track-list{grid-template-columns:1fr}.mission{grid-template-columns:auto minmax(0,1fr)}.mission-rail{grid-column:1 / -1;grid-row:auto;padding-left:0;padding-top:var(--tf-space-4);border-left:none;border-top:1px solid var(--tf-border-subtle)}.board{overflow-x:auto}}.art-bolt{background:url(/assets/bolt-CFKNEzi5.webp) center / contain no-repeat}.art-rag{background:url(/assets/rag-badge-DlLTM_ms.webp) center / cover no-repeat}.art-mcp{background:url(/assets/mcp-badge-Brlrcte1.webp) center / cover no-repeat}.art-ring{background:url(/assets/ring-badge-BZkUkpJw.webp) center / cover no-repeat}[data-tf-world=narrative]{--tf-world-ink: var(--tf-world-narrative)}[data-tf-world=engineering]{--tf-world-ink: var(--tf-world-engineering)}[data-tf-world=context]{--tf-world-ink: var(--tf-world-context)}[data-tf-world=mastery]{--tf-world-ink: var(--tf-world-mastery)}.quest-board{gap:var(--tf-space-5);padding-top:var(--tf-space-5);padding-bottom:var(--tf-space-8)}.quest-board .quest-header{flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--tf-space-4) var(--tf-space-8);padding:var(--tf-space-4) var(--tf-space-6)}.quest-brand{display:flex;align-items:center;gap:var(--tf-space-4)}.quest-brand__bolt{display:block;width:34px;height:64px;flex-shrink:0;transform:rotate(-8deg);filter:drop-shadow(0 0 14px rgba(255,181,71,.35))}.quest-brand__words{display:flex;flex-direction:column;gap:var(--tf-space-1)}.quest-tagline{font-family:var(--tf-font-mono);font-size:var(--tf-label-m);letter-spacing:var(--tf-tracking-label);text-transform:uppercase;color:var(--tf-accent)}.quest-standing{display:flex;flex-direction:column;align-items:flex-end;gap:var(--tf-space-1);text-align:right}.quest-standing__title{font-family:var(--tf-font-display);font-size:var(--tf-display-xs);font-style:italic;line-height:var(--tf-leading-tight);color:var(--tf-text-heading)}.quest-standing__count{font-family:var(--tf-font-mono);font-size:var(--tf-label-m);letter-spacing:var(--tf-tracking-label);text-transform:uppercase;color:var(--tf-text-body);font-variant-numeric:tabular-nums}.profile-toggle{background:transparent;border:1px solid transparent;border-radius:var(--tf-radius-m);padding:var(--tf-space-2) var(--tf-space-3);min-height:44px;cursor:pointer;transition:border-color var(--tf-duration-base) var(--tf-ease-standard)}.profile-toggle:hover:not([disabled]),.profile-toggle[aria-expanded=true]{background:transparent;border-color:var(--tf-border-default)}.profile-toggle__label{font-family:var(--tf-font-mono);font-size:var(--tf-label-s);letter-spacing:var(--tf-tracking-label);text-transform:uppercase;color:var(--tf-accent)}.profile-toggle__label:after{content:" ▾"}.profile-toggle[aria-expanded=true] .profile-toggle__label:after{content:" ▴"}.profile-panel{display:flex;flex-direction:column;gap:var(--tf-space-3);padding:var(--tf-space-4) var(--tf-space-5);background:var(--tf-surface-card);border:1px solid var(--tf-border-default);border-radius:var(--tf-radius-m)}.profile-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr));gap:var(--tf-space-4) var(--tf-space-6)}.profile-block{display:flex;flex-direction:column;gap:var(--tf-space-2);min-width:0}.profile-block__heading{font-family:var(--tf-font-mono);font-size:var(--tf-label-s);letter-spacing:var(--tf-tracking-label);text-transform:uppercase;color:var(--tf-text-muted)}.profile-rank__title{font-family:var(--tf-font-display);font-size:var(--tf-display-xs);font-style:italic;color:var(--tf-text-heading)}.profile-rank__count,.profile-account__local{font-size:var(--tf-text-s);color:var(--tf-text-body)}.theme-choices{display:flex;flex-wrap:wrap;gap:var(--tf-space-2)}.theme-choice{min-height:44px;background:transparent;border-color:var(--tf-border-default);color:var(--tf-text-body)}.theme-choice:hover:not([disabled]){background:transparent;border-color:var(--tf-text-muted);color:var(--tf-text-heading)}.theme-choice[aria-pressed=true],.theme-choice[aria-pressed=true]:hover:not([disabled]){border-color:var(--tf-accent);color:var(--tf-text-heading)}.profile-account .session-strip{margin:0;display:flex;flex-wrap:wrap;align-items:center;gap:var(--tf-space-2)}.profile-support__line,.profile-support__help{margin:0;font-size:var(--tf-text-s);color:var(--tf-text-body)}.profile-support__label{color:var(--tf-text-muted)}.profile-support__code{font-family:var(--tf-font-mono);letter-spacing:.08em;color:var(--tf-text-heading)}.account-deletion{margin-top:var(--tf-space-4);padding-top:var(--tf-space-4);border-top:1px solid var(--tf-border-default);display:grid;gap:var(--tf-space-3)}.danger-action{background:transparent;border-color:var(--tf-status-danger);color:var(--tf-status-danger)}.danger-action:hover:not([disabled]){background:transparent;border-color:var(--tf-status-danger);color:var(--tf-text-heading)}.danger-action[disabled]{opacity:.45;cursor:not-allowed}.account-deletion__open{justify-self:start}.account-deletion__warning{margin:0;font-size:var(--tf-text-s);color:var(--tf-text-body)}.account-deletion__input{font:inherit;font-size:var(--tf-text-m);min-height:44px;max-width:100%;padding:var(--tf-space-3) var(--tf-space-4);border:1px solid var(--tf-text-faint);border-radius:var(--tf-radius-m);background:var(--tf-surface-sunken);color:var(--tf-text-body);letter-spacing:.08em}.account-deletion__input:focus-visible{border-color:var(--tf-status-danger)}.account-deletion__actions{margin:0;display:flex;flex-wrap:wrap;gap:var(--tf-space-2)}.account-deletion__cancel{background:transparent;border-color:var(--tf-border-default);color:var(--tf-text-body)}.account-deletion__cancel:hover:not([disabled]){background:transparent;border-color:var(--tf-text-muted);color:var(--tf-text-heading)}.account-deletion__progress,.account-deletion__needs-sign-in{margin:0;font-size:var(--tf-text-s);color:var(--tf-text-body)}.account-gone__heading{margin:0}.medallion{--tf-world-ink: var(--tf-text-faint);position:relative;z-index:0;display:grid;place-items:center;flex-shrink:0;overflow:hidden;border-radius:var(--tf-radius-l);background:var(--tf-surface-inset);border:1px solid var(--tf-world-ink);box-shadow:inset 0 0 0 3px var(--tf-surface-card)}.medallion--bolt:before{content:"";position:absolute;inset:22%;z-index:-1;border-radius:50%;background:var(--tf-world-ink);opacity:.28;filter:blur(10px)}.medallion[data-tf-world=narrative]{--tf-world-ink: var(--tf-world-narrative)}.medallion[data-tf-world=engineering]{--tf-world-ink: var(--tf-world-engineering)}.medallion[data-tf-world=context]{--tf-world-ink: var(--tf-world-context)}.medallion[data-tf-world=mastery]{--tf-world-ink: var(--tf-world-mastery)}.medallion__sigil{position:absolute;inset:14%;width:72%;height:72%;color:var(--tf-world-ink);opacity:.35}.medallion__bolt{position:relative;width:44%;height:78%;transform:rotate(-8deg);filter:drop-shadow(0 2px 6px rgba(0,0,0,.45))}.medallion__rag{position:absolute;inset:0}.medallion--rag{border-color:var(--tf-accent)}.medallion__mcp,.medallion__ring{position:absolute;inset:0}.medallion--ring,.medallion--mcp{border-color:var(--tf-world-narrative)}.medallion--mastered{border-width:2px;box-shadow:inset 0 0 0 3px var(--tf-surface-card),inset 0 0 0 4px var(--tf-world-ink)}.medallion--rag.medallion--mastered,.medallion--mcp.medallion--mastered{box-shadow:none}.badge-shelf{display:flex;flex-direction:column;gap:var(--tf-space-3)}.badge-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(13rem,1fr));gap:var(--tf-space-3)}.badge{display:flex;align-items:center;gap:var(--tf-space-3);min-width:0;padding:var(--tf-space-2) var(--tf-space-3);background:var(--tf-surface-card);border:1px solid var(--tf-border-default);border-radius:var(--tf-radius-m)}.badge__art{width:48px;height:48px}.badge[data-earned=true]{border-color:var(--tf-hairline-teal);box-shadow:0 0 22px -8px var(--tf-accent)}.badge[data-earned=false]{background:var(--tf-surface-sunken);border-style:dashed}.badge[data-earned=false] .badge__art{filter:grayscale(1) brightness(.55);opacity:.55}.badge__words{display:flex;flex-direction:column;flex:1 1 auto;min-width:0;gap:2px}.badge__name{font-size:var(--tf-text-s);font-weight:var(--tf-weight-semibold);color:var(--tf-text-heading)}.badge__quest{font-family:var(--tf-font-mono);font-size:var(--tf-label-s);letter-spacing:var(--tf-tracking-label);text-transform:uppercase;color:var(--tf-text-faint);display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;line-clamp:2;overflow:hidden;overflow-wrap:anywhere}.badge__how{font-size:var(--tf-text-xs);color:var(--tf-text-muted)}.quest-grid{display:flex;flex-direction:column;gap:var(--tf-space-3)}.quest-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,44rem),1fr));gap:var(--tf-space-5)}.quest-slot{container-type:inline-size;display:flex}.quest-slot>.quest-card{flex:1 1 auto;min-width:0}.quest-card{--tf-world-ink: var(--tf-text-faint);display:flex;flex-direction:column;gap:var(--tf-space-3);padding:var(--tf-space-3);background:linear-gradient(180deg,rgba(46,230,214,.06),transparent 40%),var(--tf-surface-card);border:2px solid var(--tf-world-ink);border-radius:var(--tf-radius-l);box-shadow:inset 0 0 0 4px var(--tf-surface-card),inset 0 0 0 5px var(--tf-border-subtle),0 10px 30px #00000059;transition:transform var(--tf-duration-base) var(--tf-ease-standard),box-shadow var(--tf-duration-base) var(--tf-ease-standard)}.quest-card:has(.medallion--rag){border-color:var(--tf-accent)}.quest-card:has(.medallion--mcp){border-color:var(--tf-world-narrative)}.quest-card:hover{transform:translateY(-4px) rotate(-.4deg)}.quest-card[data-entitled=false]{background:var(--tf-surface-sunken)}.quest-card[data-entitled=false] .quest-card__art{filter:grayscale(1);opacity:.6}.quest-card__art{width:100%;height:auto;aspect-ratio:16 / 9;border:0;box-shadow:none;border-radius:var(--tf-radius-m)}.quest-card__art .medallion__rag{background-position:center 92%}.quest-card__art .medallion__mcp{background-size:contain;background-color:#03062a}.quest-card__art .medallion__bolt{width:24%;height:70%}.quest-card__body{display:flex;flex-direction:column;gap:var(--tf-space-2);min-width:0;padding:0 var(--tf-space-2)}.quest-card__title{font-family:var(--tf-font-display);font-size:var(--tf-display-xs);line-height:var(--tf-leading-snug);color:var(--tf-text-heading)}.quest-card__summary{font-size:var(--tf-text-s);line-height:var(--tf-leading-relaxed);color:var(--tf-text-body)}.quest-card__outcomes{list-style:none;margin:var(--tf-space-1) 0 0;padding:var(--tf-space-3) 0 0;display:flex;flex-direction:column;gap:var(--tf-space-2);border-top:1px solid var(--tf-border-subtle)}.quest-card__outcome{position:relative;padding-left:var(--tf-space-6);text-wrap:pretty;font-size:var(--tf-text-s);line-height:var(--tf-leading-snug);color:var(--tf-text-body)}.quest-card__outcome:before{content:"";position:absolute;left:0;top:1px;width:11px;height:18px;background:url(/assets/bolt-CFKNEzi5.webp) center / contain no-repeat}.quest-card__rail{display:flex;flex-direction:column;align-items:stretch;gap:var(--tf-space-3);margin-top:auto;padding:var(--tf-space-3) var(--tf-space-2) var(--tf-space-1);border-top:1px solid var(--tf-border-subtle)}.quest-card__meta{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--tf-space-2)}.quest-duration{font-family:var(--tf-font-mono);font-size:var(--tf-label-m);letter-spacing:var(--tf-tracking-normal);color:var(--tf-text-faint);font-variant-numeric:tabular-nums}.quest-chip{display:inline-flex;align-items:center;gap:var(--tf-space-1);padding:2px var(--tf-space-2);border:1px solid currentColor;border-radius:var(--tf-radius-pill);font-family:var(--tf-font-mono);font-size:var(--tf-label-s);letter-spacing:var(--tf-tracking-label);text-transform:uppercase;color:var(--tf-learner-soon-ink)}@container (min-width: 36rem){.quest-card{display:grid;grid-template-columns:14rem minmax(0,1fr);grid-template-rows:1fr auto;gap:var(--tf-space-3) var(--tf-space-5);padding:var(--tf-space-4)}.quest-card__art{grid-row:1 / span 2;align-self:start;aspect-ratio:1}.quest-card__art .medallion__rag{background-position:center}.quest-card__art .medallion__mcp{background-size:cover}.quest-card__body{padding:0}.quest-card__rail{flex-direction:row;flex-wrap:wrap;align-items:center;gap:var(--tf-space-3) var(--tf-space-5);padding:var(--tf-space-3) 0 0}.quest-card__rail .quest-progress{flex:1 1 8rem}.quest-card__rail .quest-error,.quest-card__rail .quest-locked,.quest-card__rail .quest-closing,.quest-card__rail .quest-last-lab{flex-basis:100%}.quest-card__rail .quest-cta{width:auto;min-width:12rem;margin-top:0}}@container (min-width: 52rem){.quest-card{grid-template-columns:17rem minmax(0,1fr)}.quest-card__outcomes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--tf-space-2) var(--tf-space-5)}}.quest-chip[data-tone=ready]{color:var(--tf-status-ready)}.quest-chip[data-tone=soon]{color:var(--tf-learner-soon-ink)}.quest-chip[data-tone=danger]{color:var(--tf-status-danger)}.quest-chip[data-tone=closed]{color:var(--tf-text-muted)}.quest-progress{display:flex;align-items:center;gap:var(--tf-space-3)}.quest-meter{display:block;flex:1 1 auto;height:6px;border-radius:var(--tf-radius-pill);background:var(--tf-surface-inset);border:1px solid var(--tf-border-subtle);overflow:hidden}.quest-meter__fill{display:block;height:100%;border-radius:var(--tf-radius-pill);background:var(--tf-accent)}.quest-progress__figure{font-family:var(--tf-font-mono);font-size:var(--tf-label-m);font-variant-numeric:tabular-nums;color:var(--tf-accent);min-width:4ch;text-align:right}.quest-progress__what{margin:0;font-size:var(--tf-text-xs);color:var(--tf-text-muted);text-align:right}.quest-error{font-size:var(--tf-text-xs);color:var(--tf-status-danger)}.quest-locked,.quest-closing,.quest-last-lab{font-size:var(--tf-text-xs);color:var(--tf-text-muted)}.quest-cta{width:100%;margin-top:auto}.quest-cta[data-action=locked]{background:transparent;border-color:var(--tf-border-default);color:var(--tf-text-muted);cursor:not-allowed}.quest-cta[data-action=preparing]{background:transparent;border-color:var(--tf-hairline-teal);color:var(--tf-accent)}.quest-cta[data-action=locked][disabled],.quest-cta[data-action=preparing][disabled]{opacity:1}.quest-cta[data-action=preparing][disabled]{cursor:progress}.quest-pending,.quest-empty,.quest-more,.quest-signed-out{font-size:var(--tf-text-s);color:var(--tf-text-muted)}.quest-retry{align-self:flex-start}.learner-error{display:flex;flex-wrap:wrap;align-items:center;gap:var(--tf-space-2) var(--tf-space-4);padding:var(--tf-space-3) var(--tf-space-4);background:var(--tf-surface-card);border-left:3px solid var(--tf-status-danger);border-radius:0 var(--tf-radius-s) var(--tf-radius-s) 0}.learner-error__headline{flex:1 1 18rem;font-size:var(--tf-text-s);font-weight:var(--tf-weight-semibold);color:var(--tf-status-danger)}.learner-error__details{flex-basis:100%;order:3}.learner-error__summary{min-height:44px;display:inline-flex;align-items:center;cursor:pointer;font-family:var(--tf-font-mono);font-size:var(--tf-label-m);letter-spacing:var(--tf-tracking-label);text-transform:uppercase;color:var(--tf-text-muted)}.learner-error__detail{font-size:var(--tf-text-xs);color:var(--tf-text-muted);overflow-wrap:anywhere}.docs-error:has(.learner-error),.tab-entry-error:has(.learner-error),.activation-error:has(.learner-error),.env-copy-error:has(.learner-error),.session-unknown:has(.learner-error){border:0;padding:0;background:none}.quest-title{font-family:var(--tf-font-display);font-size:var(--tf-display-xs);font-weight:var(--tf-weight-bold);line-height:var(--tf-leading-tight);color:var(--tf-text-heading);margin:0}@media(max-width:40rem){.quest-board{padding-left:var(--tf-space-4);padding-right:var(--tf-space-4)}.quest-board .quest-header{padding:var(--tf-space-4)}.quest-standing{align-items:flex-start;text-align:left}.quest-card{padding:var(--tf-space-4);gap:var(--tf-space-3)}.badge-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--tf-space-2)}.badge{flex-direction:column;align-items:flex-start;gap:var(--tf-space-2);padding:var(--tf-space-3)}.badge__art{width:40px;height:40px}}.lab-panel .close-missing{border:0;background:none;padding:0;font-size:var(--tf-text-xs);color:var(--tf-text-muted)}.docs-body code{overflow-wrap:anywhere}.lab-panel{display:flex;flex-direction:column;gap:var(--tf-space-4);min-width:0;background:var(--tf-surface-sunken);border:1px solid var(--tf-border-default);border-radius:var(--tf-radius-m);padding:var(--tf-space-5)}.lab-panel[hidden]{display:none}.lab-panel-head{display:flex;align-items:center;justify-content:space-between;gap:var(--tf-space-3)}.lab-panel-heading{width:fit-content;margin:0}.lab-panel-close{background:transparent;color:var(--tf-text-muted);border-color:var(--tf-border-strong);padding:var(--tf-space-2) var(--tf-space-4);font-family:var(--tf-font-mono);font-size:var(--tf-label-m);letter-spacing:var(--tf-tracking-label);text-transform:uppercase}.lab-panel-close:hover:not([disabled]){background:transparent;border-color:var(--tf-accent);color:var(--tf-text-heading)}.lab-panel .env-banner{padding:var(--tf-space-3) var(--tf-space-4)}.lab-panel .env-deadline{margin-top:calc(-1 * var(--tf-space-2))}.lab-panel .tutorial-tab{border:0;background:none;padding:0;gap:var(--tf-space-2)}.lab-panel .tab-launch-title{display:none}.lab-session{border-top:1px solid var(--tf-border-subtle);padding-top:var(--tf-space-2)}.lab-session-summary{display:flex;align-items:center;gap:var(--tf-space-3);min-height:44px;list-style:none;cursor:pointer;font-family:var(--tf-font-mono);font-size:var(--tf-label-m);letter-spacing:var(--tf-tracking-label);text-transform:uppercase;color:var(--tf-text-muted)}.lab-session-summary::-webkit-details-marker{display:none}.lab-session-summary:after{content:"";margin-left:auto;flex:none;width:8px;height:8px;border-right:2px solid var(--tf-text-muted);border-bottom:2px solid var(--tf-text-muted);transform:rotate(45deg) translateY(-2px)}.lab-session[open]>.lab-session-summary:after{transform:rotate(225deg) translateY(-2px)}.lab-session-summary:hover{color:var(--tf-text-heading)}.lab-session-body{display:flex;flex-direction:column;gap:var(--tf-space-4);padding-top:var(--tf-space-2)}.lab-panel .tab-not-brokered{border:0;background:none;padding:0;font-size:var(--tf-text-s);color:var(--tf-text-muted)}.lab-session .env-resource{border:0;background:none;padding:0}.lab-toggle{--tf-env-ink: var(--tf-status-idle);margin-left:auto;background:var(--tf-surface-card);color:var(--tf-text-heading);border-color:var(--tf-border-strong);border-radius:var(--tf-radius-pill);padding:var(--tf-space-2) var(--tf-space-4)}.lab-toggle:hover:not([disabled]){background:var(--tf-surface-card);border-color:var(--tf-accent)}.lab-toggle[aria-expanded=true]{border-color:var(--tf-hairline-teal)}.lab-toggle-pending,.lab-toggle-warning{--tf-env-ink: var(--tf-status-soon)}.lab-toggle-ready{--tf-env-ink: var(--tf-status-ready)}.lab-toggle-danger{--tf-env-ink: var(--tf-status-danger)}.lab-toggle-glyph{flex:none;width:16px;height:16px;color:var(--tf-text-muted)}@media(min-width:64rem){.tutorial-body--lab-open{grid-template-columns:minmax(0,1fr) clamp(20rem,25vw,26rem)}.lab-panel{position:sticky;top:var(--tf-space-4);height:calc(100vh - var(--tf-space-10));max-height:calc(100vh - var(--tf-space-10));overflow-y:auto;overscroll-behavior:contain}}@keyframes tf-drawer-in{0%{transform:translate(100%)}to{transform:none}}@keyframes tf-scrim-in{0%{opacity:0}to{opacity:1}}@media(max-width:63.99rem){.lab-panel{position:fixed;top:0;right:0;bottom:0;z-index:20;width:min(26rem,88vw);overflow-y:auto;overscroll-behavior:contain;background:var(--tf-surface-card);border:0;border-left:1px solid var(--tf-text-body);border-radius:0;animation:tf-drawer-in var(--tf-duration-base) var(--tf-ease-out) both}.lab-scrim{position:fixed;inset:0;z-index:19;background:var(--tf-learner-scrim);animation:tf-scrim-in var(--tf-duration-base) var(--tf-ease-out) both}}@media(max-width:40rem){.lab-panel{width:100%;border-left:0;padding:var(--tf-space-4)}.tutorial-bar .quest-title{flex-basis:100%;order:1;font-size:var(--tf-display-xs)}.tutorial-bar .lab-toggle{order:0}}.docs-outline-link[aria-current]{color:var(--tf-text-heading);font-weight:600;box-shadow:inset 2px 0 0 var(--tf-accent);padding-left:var(--tf-space-2)}.docs-outline-menu{border:1px solid var(--tf-border-subtle);border-radius:var(--tf-radius-s);background:var(--tf-surface-card)}.docs-outline-menu-summary{cursor:pointer;padding:var(--tf-space-2) var(--tf-space-4);font-family:var(--tf-font-mono);font-size:var(--tf-label-s);letter-spacing:var(--tf-tracking-label);text-transform:uppercase;color:var(--tf-text-muted)}.docs-outline-menu-nav{padding:0 var(--tf-space-4) var(--tf-space-3);max-height:50vh;overflow-y:auto}@container docs (min-width: 72rem){.docs-outline-menu{display:none}}.copy-button-done,.copy-button-done:hover:not([disabled]){border-color:var(--tf-status-ready);color:var(--tf-text-heading)}.lab-panel .env-copied{position:sticky;bottom:0;z-index:1}.docs-pages .docs-page-list{gap:0}.docs-pages .docs-page-link{padding-top:var(--tf-space-1);padding-bottom:var(--tf-space-1);row-gap:0}@container docs (min-width: 48rem){.docs-pages{scrollbar-width:thin;padding-bottom:var(--tf-space-4)}}.docs-body .docs-code pre::-webkit-scrollbar{height:10px}.docs-body .docs-code pre::-webkit-scrollbar-thumb{background:var(--tf-text-faint);border-radius:var(--tf-radius-pill);border:2px solid var(--tf-grimoire-panel)}.docs-body .docs-code pre::-webkit-scrollbar-track{background:transparent}.billing-page .wordmark{margin:0}.billing-back,.billing-action{min-height:44px;background:transparent;border-color:var(--tf-border-default);color:var(--tf-text-body)}.billing-back:hover:not([disabled]),.billing-action:hover:not([disabled]){background:transparent;border-color:var(--tf-text-muted);color:var(--tf-text-heading)}.billing-action--primary,.billing-action--primary:hover:not([disabled]){background:var(--tf-accent);border-color:transparent;color:var(--tf-accent-ink)}.billing-action--primary:hover:not([disabled]){background:var(--tf-accent-hover)}.billing-test-mode{margin:0;padding:var(--tf-space-2) var(--tf-space-4);font-family:var(--tf-font-mono);font-size:var(--tf-label-m);letter-spacing:var(--tf-tracking-label);text-transform:uppercase;color:var(--tf-text-heading);background:var(--tf-surface-sunken);border-left:3px solid var(--tf-status-soon);border-radius:0 var(--tf-radius-s) var(--tf-radius-s) 0}.billing-body{display:flex;flex-direction:column;align-items:flex-start;gap:var(--tf-space-4);min-width:0}.billing-body>*{margin:0;max-width:100%}.billing-lead{font-size:var(--tf-text-m);color:var(--tf-text-body)}.billing-quiet,.billing-legal,.billing-provider,.billing-launch,.billing-notice,.billing-cancelled,.billing-confirmed{font-size:var(--tf-text-s);color:var(--tf-text-body)}.billing-legal,.billing-provider{color:var(--tf-text-muted)}.billing-legal__link{color:var(--tf-text-heading);text-decoration:underline}.billing-notice,.billing-confirmed{padding:var(--tf-space-3) var(--tf-space-4);background:var(--tf-surface-card);border-left:3px solid var(--tf-status-ready);border-radius:0 var(--tf-radius-s) var(--tf-radius-s) 0;color:var(--tf-text-heading)}.plan-list{align-self:stretch;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,17rem),1fr));gap:var(--tf-space-4);margin:0;padding:0;list-style:none}.plan-slot{display:flex;min-width:0}.plan-card{flex:1 1 auto;display:flex;flex-direction:column;gap:var(--tf-space-2);min-width:0;padding:var(--tf-space-5);background:var(--tf-surface-card);border:1px solid var(--tf-border-default);border-radius:var(--tf-radius-l)}.plan-card[data-chosen=true]{border-color:var(--tf-accent)}.plan-card>*{margin:0}.plan-card__name{font-family:var(--tf-font-mono);font-size:var(--tf-label-m);letter-spacing:var(--tf-tracking-label);text-transform:uppercase;color:var(--tf-text-muted)}.plan-card__amount{font-family:var(--tf-font-display);font-size:var(--tf-display-s);font-weight:var(--tf-weight-bold);line-height:var(--tf-leading-tight);color:var(--tf-text-heading)}.plan-card__per,.plan-card__tax,.plan-card__trial,.plan-card__charge{font-size:var(--tf-text-s);color:var(--tf-text-body)}.plan-card__tax{color:var(--tf-text-muted)}.plan-card__cta{width:100%;margin-top:auto}.plan-summary,.billing-waiting{display:flex;flex-direction:column;align-items:flex-start;gap:var(--tf-space-2);min-width:0;padding:var(--tf-space-4) var(--tf-space-5);background:var(--tf-surface-card);border-left:3px solid var(--tf-border-default);border-radius:0 var(--tf-radius-s) var(--tf-radius-s) 0}.plan-summary>*,.billing-waiting>*{margin:0}.plan-summary[data-tone=good]{border-left-color:var(--tf-status-ready)}.plan-summary[data-tone=warning],.billing-waiting{border-left-color:var(--tf-status-soon)}.plan-summary[data-tone=danger]{border-left-color:var(--tf-status-danger)}.plan-summary__headline,.billing-waiting__headline{font-size:var(--tf-text-m);font-weight:var(--tf-weight-semibold);color:var(--tf-text-heading)}.plan-summary[data-tone=danger] .plan-summary__headline{color:var(--tf-status-danger)}.plan-summary__line,.billing-waiting__detail{font-size:var(--tf-text-s);color:var(--tf-text-body)}.plan-summary--compact{padding:0;background:none;border:0;border-radius:0}.plan-summary--compact .plan-summary__headline{font-size:var(--tf-text-s)}.board-plan-notice{display:flex;flex-wrap:wrap;align-items:center;gap:var(--tf-space-2) var(--tf-space-4);padding:var(--tf-space-3) var(--tf-space-4);background:var(--tf-surface-card);border-left:3px solid var(--tf-accent);border-radius:0 var(--tf-radius-s) var(--tf-radius-s) 0}.board-plan-notice[data-tone=danger]{border-left-color:var(--tf-status-danger)}.board-plan-notice__text{flex:1 1 16rem;margin:0;font-size:var(--tf-text-s);font-weight:var(--tf-weight-semibold);color:var(--tf-text-heading)}.board-plan-notice[data-tone=danger] .board-plan-notice__text{color:var(--tf-status-danger)}.door-entry-notice{margin:0;max-width:var(--tf-measure-prose);font-size:var(--tf-text-s);line-height:var(--tf-leading-relaxed);color:var(--tf-text-body)}.door-entry-privacy{color:var(--tf-accent);text-decoration:underline;text-underline-offset:.15em}.door-entry-newsletter{display:flex;align-items:flex-start;gap:var(--tf-space-3);max-width:var(--tf-measure-prose);min-height:44px;font-size:var(--tf-text-s);line-height:var(--tf-leading-relaxed);color:var(--tf-text-body);cursor:pointer}.door-entry-newsletter__box{flex:none;width:1.25rem;height:1.25rem;margin:.2rem 0 0}.door-entry-account{margin:calc(-1 * var(--tf-space-5)) 0 0;max-width:var(--tf-measure-prose);font-size:var(--tf-text-s);line-height:var(--tf-leading-relaxed);color:var(--tf-text-body)}.door-entry-account__button{min-height:44px;padding:0;border:0;background:transparent;color:var(--tf-accent);font:inherit;font-weight:var(--tf-weight-semibold);text-decoration:underline;text-underline-offset:.15em;cursor:pointer}.door-entry-account__button:disabled{color:var(--tf-text-body);cursor:default}.door-entry-back{margin:0;padding:var(--tf-space-3) var(--tf-space-6) 0}.door-entry-back__button{min-height:44px;padding:0;border:0;background:transparent;color:var(--tf-accent);font:inherit;font-size:var(--tf-text-s);text-decoration:underline;text-underline-offset:.15em;cursor:pointer}.keep-learning{display:flex;flex-direction:column;gap:var(--tf-space-3);margin:var(--tf-space-4) 0;padding:var(--tf-space-4) var(--tf-space-5);max-width:var(--tf-measure-prose);border-left:3px solid var(--tf-accent);border-radius:0 var(--tf-radius-m) var(--tf-radius-m) 0;background:var(--tf-surface-sunken)}.keep-learning__heading{margin:0;font-family:var(--tf-font-sans);font-size:var(--tf-text-m);font-weight:var(--tf-weight-semibold);color:var(--tf-text-heading)}.keep-learning__text{margin:0;font-size:var(--tf-text-s);line-height:var(--tf-leading-relaxed);color:var(--tf-text-body)}.keep-learning__actions{display:flex;flex-wrap:wrap;gap:var(--tf-space-3);align-items:center;margin:0}.keep-learning--done{border-left-color:var(--tf-status-ready)}.tool-list-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:var(--tf-space-1) var(--tf-space-3)}.tool-list-key-link{font-size:var(--tf-text-s);white-space:nowrap}#model-access{scroll-margin-top:4rem}.tool-rows{display:flex;flex-direction:column;margin:0;padding:0;list-style:none}.lab-panel .tool-row{border-top:1px solid var(--tf-border-default);padding:var(--tf-space-3) 0}.lab-panel .tool-row:first-child{border-top:0;padding-top:0}.tool-row-body{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:var(--tf-space-1) var(--tf-space-3);border:0;background:none;padding:0}.tool-row-what{display:contents}.lab-panel .tool-row .tab-launch-title{display:block;grid-column:1;grid-row:1;min-width:0;font-size:var(--tf-text-m)}.tool-row .tab-launch-actions{grid-column:2;grid-row:1;flex-wrap:nowrap;gap:var(--tf-space-2)}.tool-row .tab-launch{padding-inline:var(--tf-space-4)}.tool-row .tab-launch-about{grid-column:1 / -1;grid-row:2}.tool-row-body:has(>.tab-not-brokered){grid-template-columns:auto minmax(0,1fr)}.tool-row .tab-not-brokered{grid-column:2;grid-row:1;text-align:end}.tool-row .tab-entry-error,.tool-row .tab-config-error{grid-column:1 / -1;grid-row:3}.tab-launch-about{margin:0;font-size:var(--tf-text-xs);line-height:var(--tf-leading-relaxed);color:var(--tf-text-muted)}.env-open-soon{margin:0;font-size:var(--tf-text-s);line-height:var(--tf-leading-normal);color:var(--tf-learner-soon-ink)}.env-summary--tools .env-deadline,.env-summary--tools .env-actions{position:sticky;z-index:1;margin-inline:calc(-1 * var(--tf-space-5));padding:var(--tf-space-3) var(--tf-space-5);background:var(--tf-surface-sunken)}.env-summary--tools .env-deadline{top:calc(-1 * var(--tf-space-5));margin-top:0;border-bottom:1px solid var(--tf-border-default)}.env-summary--tools .env-actions{bottom:calc(-1 * var(--tf-space-5));border-top:1px solid var(--tf-border-default)}@media(max-width:63.99rem){.env-summary--tools .env-deadline,.env-summary--tools .env-actions{background:var(--tf-surface-card)}}.model-other{display:flex;flex-direction:column;gap:var(--tf-space-3);border-top:1px solid var(--tf-border-default)}.model-other-summary{display:flex;align-items:center;gap:var(--tf-space-2);min-height:44px;cursor:pointer;font-family:var(--tf-font-mono);font-size:var(--tf-label-m);color:var(--tf-text-heading)}.model-other-summary::-webkit-details-marker{display:none}.model-other-summary:before{content:"▸" / "";flex:none;transition:transform var(--tf-duration-base) var(--tf-ease-standard)}.model-other[open]>.model-other-summary:before{transform:rotate(90deg)}.model-other[open]>.model-other-summary{margin-bottom:var(--tf-space-2)}