@font-face{font-family:IBM Plex Sans Variable;font-style:normal;font-display:swap;font-weight:100 700;src:url(/assets/ibm-plex-sans-cyrillic-ext-wght-normal-d45eAU9y.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:IBM Plex Sans Variable;font-style:normal;font-display:swap;font-weight:100 700;src:url(/assets/ibm-plex-sans-cyrillic-wght-normal-BAAhND-U.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:IBM Plex Sans Variable;font-style:normal;font-display:swap;font-weight:100 700;src:url(/assets/ibm-plex-sans-greek-wght-normal-CmyJS8uq.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:IBM Plex Sans Variable;font-style:normal;font-display:swap;font-weight:100 700;src:url(/assets/ibm-plex-sans-vietnamese-wght-normal-Dg1JeJN0.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:IBM Plex Sans Variable;font-style:normal;font-display:swap;font-weight:100 700;src:url(/assets/ibm-plex-sans-latin-ext-wght-normal-CIII54If.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:IBM Plex Sans Variable;font-style:normal;font-display:swap;font-weight:100 700;src:url(/assets/ibm-plex-sans-latin-wght-normal-IvpUvPa2.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/ibm-plex-mono-cyrillic-ext-400-normal-xuaO2J-f.woff2)format("woff2"),url(/assets/ibm-plex-mono-cyrillic-ext-400-normal-DMdlQ8Kv.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/ibm-plex-mono-cyrillic-400-normal-BSMlKf0J.woff2)format("woff2"),url(/assets/ibm-plex-mono-cyrillic-400-normal-CEL4l2ZJ.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/ibm-plex-mono-vietnamese-400-normal-BulugwFq.woff2)format("woff2"),url(/assets/ibm-plex-mono-vietnamese-400-normal-DDuiU_S-.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/ibm-plex-mono-latin-ext-400-normal-BmRBH3aV.woff2)format("woff2"),url(/assets/ibm-plex-mono-latin-ext-400-normal-D3D2R8hC.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/ibm-plex-mono-latin-400-normal-DMJ8VG8y.woff2)format("woff2"),url(/assets/ibm-plex-mono-latin-400-normal-CvHOgSBP.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font-synthesis:none;text-rendering:optimizelegibility;font-kerning:normal;--color-bg:oklch(10.5% 0 0);--color-bg-soft:oklch(13% .004 32);--color-surface:oklch(16.5% .008 32);--color-surface-raised:oklch(22.5% .012 32);--color-surface-hover:oklch(25.5% .015 32);--color-ink:oklch(95.5% .008 95);--color-muted:oklch(70.5% .012 70);--color-faint:oklch(55% .01 70);--color-line:oklch(32% .012 32);--color-line-strong:oklch(43% .014 32);--color-signal:oklch(76% .145 155);--color-signal-strong:oklch(68% .16 155);--color-signal-soft:oklch(26% .055 155);--color-signal-ink:oklch(12% .025 155);--color-intent:oklch(66.3% .153 32.1);--color-intent-soft:oklch(24% .055 32.1);--color-error:oklch(69% .18 25);--color-error-soft:oklch(23% .05 25);--color-warning:oklch(80% .13 80);--color-warning-soft:oklch(22% .04 80);--radius-sm:.5rem;--radius-md:.75rem;--radius-lg:1rem;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-6:1.5rem;--space-8:2rem;--space-12:3rem;--ease-out-quart:cubic-bezier(.25, 1, .5, 1);--ease-out-quint:cubic-bezier(.22, 1, .36, 1);font-family:IBM Plex Sans Variable,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html{background:var(--color-bg)}body{background:radial-gradient(circle at 50% -15%, oklch(23% .035 155), transparent 34rem), var(--color-bg);min-width:20rem;min-height:100dvh;color:var(--color-ink);margin:0;font-size:1rem;line-height:1.55}button,input{font:inherit}button{color:inherit}button:not(:disabled){cursor:pointer}button:focus{outline:none}button:focus-visible,input:focus-visible,a:focus-visible{outline:.1875rem solid var(--color-signal);outline-offset:.1875rem}.acronym-trigger{color:inherit;font:inherit;line-height:inherit;text-align:inherit;text-underline-offset:.18em;background:0 0;border:0;border-bottom:1px dashed;border-radius:0;padding:0;text-decoration:none;display:inline;position:relative}.acronym-trigger:after{content:"";position:absolute;inset:-.125rem -.3125rem}.acronym-trigger:hover,.acronym-trigger[aria-expanded=true]{color:var(--color-signal)}.acronym-trigger:focus-visible{border-radius:.125rem}.acronym-tooltip{z-index:60;top:var(--tooltip-top);left:var(--tooltip-left);border:1px solid var(--color-line-strong);border-radius:var(--radius-md);background:var(--color-surface-raised);width:min(20rem,100vw - 2rem);color:var(--color-ink);padding:var(--space-3) var(--space-4);animation:acronym-tooltip-in .14s var(--ease-out-quart);position:fixed;translate:-50%}.acronym-tooltip[data-placement=above]{translate:-50% -100%}.acronym-tooltip strong{margin-block-end:var(--space-1);font-size:.875rem;display:block}.acronym-tooltip p{color:var(--color-muted);margin:0;font-size:.8125rem;line-height:1.45}@keyframes acronym-tooltip-in{0%{opacity:0;transform:translateY(.25rem)}to{opacity:1;transform:translateY(0)}}h1,h2,p{margin-block-start:0}h1,h2{text-wrap:balance}h1{letter-spacing:-.025em;margin-block-end:var(--space-4);font-size:2rem;line-height:1.12}h2{letter-spacing:-.015em;margin-block-end:var(--space-3);font-size:1.375rem;line-height:1.2}p{color:var(--color-muted);text-wrap:pretty}code,pre{font-variant-ligatures:none;font-family:IBM Plex Mono,ui-monospace,SFMono-Regular,Consolas,monospace}.skip-link{z-index:100;top:var(--space-4);left:var(--space-4);border-radius:var(--radius-sm);background:var(--color-ink);color:var(--color-bg);padding:var(--space-3) var(--space-4);transition:translate .16s var(--ease-out-quart);font-weight:700;position:fixed;translate:0 -200%}.skip-link:focus{translate:0}.brand-mark{align-items:center;gap:var(--space-3);letter-spacing:-.015em;font-weight:700;display:inline-flex}.brand-mark__nodes{align-items:center;gap:.1875rem;display:inline-flex}.brand-mark__nodes span{background:var(--color-faint);border-radius:50%;width:.375rem;height:.375rem}.brand-mark__nodes span:nth-child(2){background:var(--color-intent)}.brand-mark__nodes span:nth-child(3){background:var(--color-signal)}.primary-button,.secondary-button{justify-content:center;align-items:center;gap:var(--space-3);border-radius:var(--radius-md);min-height:3rem;transition:background-color .16s var(--ease-out-quart), transform .12s var(--ease-out-quart), color .16s var(--ease-out-quart);border:0;padding:.75rem 1rem;font-weight:700;display:inline-flex}.primary-button{background:var(--color-signal);color:var(--color-signal-ink)}.primary-button:hover:not(:disabled){background:oklch(81% .14 155)}.primary-button:active:not(:disabled),.secondary-button:active:not(:disabled){transform:scale(.98)}.primary-button:disabled{background:var(--color-surface-raised);color:var(--color-faint);cursor:not-allowed}.secondary-button{border:1px solid var(--color-line-strong);background:var(--color-surface-raised);color:var(--color-ink)}.secondary-button:hover:not(:disabled){background:var(--color-surface-hover)}.primary-button--wide{width:100%}.icon-button{border-radius:var(--radius-sm);width:2.75rem;height:2.75rem;color:var(--color-muted);transition:background-color .15s var(--ease-out-quart), color .15s var(--ease-out-quart);background:0 0;border:0;place-items:center;display:inline-grid}.icon-button:hover{background:var(--color-surface-raised);color:var(--color-ink)}.auth-layout{grid-template-rows:minmax(18rem,auto) auto;min-height:100dvh;display:grid}.auth-intro,.auth-panel{padding:max(var(--space-6), env(safe-area-inset-top)) max(var(--space-6), env(safe-area-inset-right)) max(var(--space-8), env(safe-area-inset-bottom)) max(var(--space-6), env(safe-area-inset-left))}.auth-intro{justify-content:space-between;gap:var(--space-8);flex-direction:column;display:flex}.auth-intro__copy{max-width:36rem}.auth-intro__copy h1{max-width:15ch;margin-block-start:var(--space-6);font-size:2.5rem}.auth-intro__copy p{max-width:38ch;font-size:1.0625rem}.auth-intro__rail{align-items:center;gap:var(--space-2);color:var(--color-faint);font-family:IBM Plex Mono,monospace;font-size:.75rem;display:flex}.auth-intro__rail span{align-items:center;gap:var(--space-2);display:flex}.auth-intro__rail span:not(:last-child):after{content:"";background:var(--color-line-strong);width:1.25rem;height:1px}.auth-intro__rail [data-complete=true]{color:var(--color-signal)}.auth-panel{justify-content:center;gap:var(--space-8);background:var(--color-surface);flex-direction:column;display:flex}.auth-panel>div,.auth-form{width:100%;max-width:30rem;margin-inline:auto}.auth-panel h2{margin-block-end:var(--space-2);font-size:1.75rem}.auth-account-heading{gap:var(--space-2);display:grid}.auth-account-heading h2{margin:0}.auth-back,.plain-button{width:fit-content;min-height:2.75rem;color:var(--color-signal);background:0 0;border:0;padding:0;font-size:.875rem;font-weight:650}.auth-back{align-items:center;gap:var(--space-2);margin-block-end:var(--space-2);display:inline-flex}.auth-back:hover,.plain-button:hover{color:var(--color-ink)}.auth-form-links{justify-content:space-between;align-items:center;gap:var(--space-4);display:flex}.form-intro{margin:0}.auth-divider{align-items:center;gap:var(--space-4);margin-block:calc(-1 * var(--space-4));color:var(--color-faint);font-size:.8125rem;font-weight:650;display:flex}.auth-divider:before,.auth-divider:after{content:"";background:var(--color-line-strong);flex:1;height:1px}.auth-option{gap:var(--space-3);display:grid}.auth-option .primary-button,.auth-option .secondary-button{width:100%}.auth-option .field-hint{text-align:center;margin:0}.auth-layout--convert{grid-template-rows:1fr}.auth-layout--convert .auth-panel{background:var(--color-bg)}.header-save{border:1px solid var(--color-line-strong);border-radius:var(--radius-sm);background:var(--color-surface-raised);min-height:2.75rem;color:var(--color-ink);padding:0 var(--space-4);transition:background-color .15s var(--ease-out-quart);font-size:.875rem;font-weight:650}.header-save:hover{background:var(--color-surface-hover)}.auth-form,.profile-form,.profile-settings{gap:var(--space-4);display:grid}.auth-form label,.profile-form>label:not(.visibility-control),.profile-settings>label:not(.visibility-control){gap:var(--space-2);color:var(--color-ink);font-size:.875rem;font-weight:650;display:grid}input[type=email],input[type=password],input[type=text],.profile-form input:not([type=checkbox]),.profile-settings input:not([type=checkbox]){border:1px solid var(--color-line-strong);border-radius:var(--radius-sm);background:var(--color-bg-soft);width:100%;min-height:3rem;color:var(--color-ink);transition:border-color .15s var(--ease-out-quart), background-color .15s var(--ease-out-quart);padding:.6875rem .75rem;font-size:1rem}input::placeholder{color:var(--color-muted)}input:hover{border-color:var(--color-muted)}.password-field{display:block;position:relative}.password-field input{padding-inline-end:3.25rem}.password-toggle{width:2.75rem;height:2.75rem;color:var(--color-muted);background:0 0;border:0;place-items:center;display:grid;position:absolute;top:.125rem;right:.125rem}.form-error,.form-success{border-radius:var(--radius-sm);padding:var(--space-3);margin:0;font-size:.875rem}.form-error{background:var(--color-error-soft);color:var(--color-error)}.form-success{background:var(--color-signal-soft);color:var(--color-signal)}.field-hint{color:var(--color-muted);font-size:.8125rem;font-weight:400}.profile-setup{width:min(100%,54rem);min-height:100dvh;padding:max(var(--space-6), env(safe-area-inset-top)) max(var(--space-6), env(safe-area-inset-right)) max(var(--space-8), env(safe-area-inset-bottom)) max(var(--space-6), env(safe-area-inset-left));margin-inline:auto}.profile-setup__header{justify-content:space-between;align-items:center;display:flex}.step-count{color:var(--color-muted);font-size:.8125rem}.profile-setup__content{gap:var(--space-8);padding-block-start:var(--space-12);display:grid}.profile-setup__intro{position:relative}.profile-setup__intro h1{max-width:14ch;font-size:2.5rem}.profile-setup__intro p:last-child{max-width:42ch}.intent-marker{top:0;left:calc(-1 * var(--space-4));background:var(--color-intent);border-radius:999px;width:.1875rem;height:4.5rem;position:absolute}.profile-form{padding:var(--space-6);border-radius:var(--radius-lg);background:var(--color-surface)}.identity-preview{align-items:center;gap:var(--space-3);border-bottom:1px solid var(--color-line);padding-block-end:var(--space-4);display:flex}.identity-preview__avatar,.profile-heading__avatar,.leaderboard-avatar{background:var(--color-signal-soft);color:var(--color-signal);border-radius:50%;place-items:center;font-weight:700;display:grid}.identity-preview__avatar{width:3rem;height:3rem}.identity-preview div{min-width:0;display:grid}.identity-preview span:last-child{color:var(--color-muted);text-overflow:ellipsis;font-size:.8125rem;overflow:hidden}.visibility-control{align-items:center;gap:var(--space-3);border:1px solid var(--color-line);border-radius:var(--radius-md);padding:var(--space-3);cursor:pointer;grid-template-columns:auto auto 1fr;display:grid}.visibility-control input{width:1.125rem;height:1.125rem;accent-color:var(--color-signal)}.visibility-control__icon{border-radius:var(--radius-sm);background:var(--color-signal-soft);width:2.5rem;height:2.5rem;color:var(--color-signal);place-items:center;display:grid}.visibility-control span:last-child{display:grid}.visibility-control small{color:var(--color-muted);font-weight:400}.loading-screen,.fatal-state{min-height:100dvh;padding:var(--space-6);text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex}.loading-screen__skeleton{gap:var(--space-3);width:min(100%,20rem);margin-block:var(--space-8) var(--space-4);display:grid}.loading-screen__skeleton span,.leaderboard-skeleton span{border-radius:var(--radius-sm);background:linear-gradient(90deg, var(--color-surface), var(--color-surface-raised), var(--color-surface));background-size:200% 100%;animation:1.3s linear infinite skeleton-shift;display:block}.loading-screen__skeleton span{height:1rem}.loading-screen__skeleton span:nth-child(2){width:80%}.loading-screen__skeleton span:nth-child(3){width:62%}.fatal-state{max-width:32rem;margin-inline:auto}.app-frame{background:var(--color-bg);width:min(100%,74rem);min-height:100dvh;margin-inline:auto}.app-header{z-index:20;justify-content:space-between;align-items:center;gap:var(--space-4);min-height:4.25rem;padding:max(var(--space-3), env(safe-area-inset-top)) max(var(--space-4), env(safe-area-inset-right)) var(--space-3) max(var(--space-4), env(safe-area-inset-left));border-bottom:1px solid var(--color-line);background:var(--color-bg);display:flex;position:sticky;top:0}.app-header__actions{align-items:center;gap:var(--space-2);display:flex}.app-header__name{color:var(--color-muted);font-size:.875rem;display:none}.app-main{min-height:calc(100dvh - 8.5rem);padding:var(--space-6) var(--space-4) 6.5rem}.bottom-nav{z-index:30;gap:var(--space-1);min-height:4.25rem;padding:var(--space-2) max(var(--space-3), env(safe-area-inset-right)) max(var(--space-2), env(safe-area-inset-bottom)) max(var(--space-3), env(safe-area-inset-left));border-top:1px solid var(--color-line);background:var(--color-bg);grid-template-columns:repeat(4,1fr);display:grid;position:fixed;bottom:0;left:0;right:0}.bottom-nav__item{border-radius:var(--radius-sm);min-height:3rem;color:var(--color-muted);background:0 0;border:0;align-content:center;place-items:center;gap:.125rem;font-size:.6875rem;font-weight:600;display:grid}.bottom-nav__item[data-active=true]{background:var(--color-signal-soft);color:var(--color-signal)}.dashboard-view,.concepts-view,.leaderboard-view,.profile-view{gap:var(--space-8);display:grid}.dashboard-hero{justify-content:space-between;align-items:flex-start;gap:var(--space-4);display:flex}.dashboard-hero h1{max-width:14ch}.dashboard-hero h1 span{color:var(--color-signal)}.dashboard-hero p:last-child{max-width:42ch}.dashboard-metrics{gap:var(--space-4);flex:none;display:flex}.mastery-badge,.learning-time-badge{justify-items:center;gap:var(--space-1);color:var(--color-signal);text-align:center;flex:none;display:grid}.mastery-badge span,.learning-time-badge span{color:var(--color-muted);font-size:.6875rem;display:grid}.mastery-badge strong,.learning-time-badge strong{color:var(--color-ink);font-variant-numeric:tabular-nums;font-size:1.25rem}.learning-time-badge{color:var(--color-muted)}.module-overview{padding-block:var(--space-6);border-block:1px solid var(--color-line)}.module-overview__header{justify-content:space-between;align-items:flex-start;gap:var(--space-4);display:flex}.module-count{color:var(--color-muted);font-family:IBM Plex Mono,monospace;font-size:.8125rem}.module-overview>p{max-width:58ch}.progress-track{background:var(--color-surface-raised);border-radius:999px;height:.375rem;overflow:hidden}.progress-track span{border-radius:inherit;background:var(--color-signal);height:100%;display:block}.level-path{gap:var(--space-6);display:grid}.level-navigator{z-index:15;top:calc(4.25rem + env(safe-area-inset-top));align-items:center;gap:var(--space-3);padding-block:var(--space-2);border-bottom:1px solid var(--color-line);background:var(--color-bg);grid-template-columns:2.75rem minmax(0,1fr) 2.75rem;display:grid;position:sticky}.level-navigator__identity{text-align:center;min-width:0}.level-navigator__identity>span{color:var(--color-muted);font-family:IBM Plex Mono,monospace;font-size:.75rem}.level-navigator__identity h2{margin:var(--space-1) 0 0;text-wrap:balance;font-size:1.25rem}.level-navigator>button:not(.level-navigator__identity){border:1px solid var(--color-line-strong);border-radius:var(--radius-sm);width:2.75rem;height:2.75rem;color:var(--color-ink);background:0 0;place-items:center;display:grid}.level-navigator>button:not(.level-navigator__identity):hover:not(:disabled),.level-navigator>button:not(.level-navigator__identity):focus-visible{border-color:var(--color-signal);background:var(--color-signal-soft);color:var(--color-signal)}.level-navigator>button:not(.level-navigator__identity):disabled{color:var(--color-faint);cursor:default;opacity:.45}.level-navigator__identity--return{min-width:0;min-height:2.75rem;color:var(--color-ink);background:0 0;border:0;justify-items:center;padding:0;display:grid}.level-navigator__identity--return small{align-items:center;gap:var(--space-1);color:var(--color-signal);margin-block-start:var(--space-1);font-size:.6875rem;font-weight:700;display:inline-flex}.level-navigator__identity--return:hover,.level-navigator__identity--return:focus-visible{border-radius:var(--radius-sm);background:var(--color-signal-soft)}.level-path__header{justify-content:space-between;align-items:baseline;gap:var(--space-4);display:flex}.level-path__header>strong{color:var(--color-muted);font-family:IBM Plex Mono,monospace;font-size:.8125rem}.level-path__header p{max-width:58ch;margin:0}.level-path__header>strong{color:var(--color-ink);flex:none}.checkpoint-groups{border-top:1px solid var(--color-line)}.checkpoint-group{padding-block:var(--space-6);border-bottom:1px solid var(--color-line)}.checkpoint-group>header{justify-content:space-between;align-items:baseline;gap:var(--space-3);margin-block-end:var(--space-2);display:flex}.checkpoint-group>header h3{margin:0;font-size:1rem}.checkpoint-group[data-current=true]>header h3{color:var(--color-signal)}.checkpoint-group>header span{color:var(--color-muted);font-family:IBM Plex Mono,monospace;font-size:.75rem}.checkpoint-group>ol{margin:0;padding:0;list-style:none;display:grid}.level-lesson{gap:var(--space-3);grid-template-columns:2rem minmax(0,1fr);display:grid;position:relative}.level-lesson:before{background:var(--color-line-strong);content:"";width:1px;position:absolute;top:2.25rem;bottom:-.25rem;left:calc(1rem - .5px)}.level-lesson[data-last=true]:before{display:none}.level-lesson__marker{z-index:1;width:2rem;height:2rem;border:1px solid var(--color-line-strong);background:var(--color-bg);color:var(--color-faint);border-radius:50%;place-items:center;margin-block-start:var(--space-3);font-family:IBM Plex Mono,monospace;font-size:.75rem;display:grid;position:relative}.level-lesson[data-state=complete] .level-lesson__marker{border-color:var(--color-signal);background:var(--color-signal-soft);color:var(--color-signal)}.level-lesson[data-state=current] .level-lesson__marker{border-color:var(--color-signal);background:var(--color-signal);color:var(--color-signal-ink);font-weight:700}.level-lesson__content{min-width:0;padding-block:var(--space-3)}.level-lesson+.level-lesson .level-lesson__content{border-top:1px solid var(--color-line)}.level-lesson[data-state=current] .level-lesson__content{margin-block:var(--space-1) var(--space-3);border-radius:var(--radius-md);background:var(--color-surface);padding:var(--space-4);border:0}.level-lesson__heading{justify-content:space-between;align-items:flex-start;gap:var(--space-3);min-height:2.25rem;display:flex}.level-lesson__heading>div{gap:var(--space-1);min-width:0;display:grid}.level-lesson__heading h4{color:var(--color-ink);margin:0;font-size:.9375rem}.level-lesson__heading span{align-items:center;gap:var(--space-1);color:var(--color-muted);font-size:.75rem;display:inline-flex}.level-lesson__heading>strong{color:var(--color-muted);flex:none;font-size:.75rem;font-weight:700}.level-lesson[data-state=current] .level-lesson__heading>strong{color:var(--color-signal)}.level-lesson[data-state=mapped] .level-lesson__heading h4,.level-lesson[data-state=mapped] .level-lesson__heading>strong{color:var(--color-faint)}.level-lesson__focus{gap:var(--space-4);margin-block-start:var(--space-4);display:grid}.level-lesson__focus ul{gap:var(--space-2) var(--space-4);color:var(--color-muted);flex-wrap:wrap;margin:0;padding:0;font-size:.8125rem;list-style-position:inside;display:flex}.level-lesson__review{align-items:center;gap:var(--space-2);min-height:2.75rem;color:var(--color-muted);background:0 0;border:0;padding:0;font-size:.8125rem;font-weight:700;display:inline-flex}.level-lesson__review:hover{color:var(--color-signal)}.planned-level{border-top:1px solid var(--color-line)}.planned-level__summary{margin:0;display:grid}.planned-level__summary>div{padding-block:var(--space-5);border-bottom:1px solid var(--color-line)}.planned-level__summary dt{color:var(--color-muted);margin-block-end:var(--space-2);font-size:.75rem;font-weight:700}.planned-level__summary dd{color:var(--color-ink);margin:0}.planned-level>section{padding-block-start:var(--space-6)}.planned-level>section h3{margin-block-end:var(--space-2);font-size:1rem}.planned-level ol{margin:0;padding:0;list-style:none}.planned-level li{align-items:center;gap:var(--space-3);border-bottom:1px solid var(--color-line);grid-template-columns:2rem minmax(0,1fr) auto;min-height:3.5rem;display:grid}.planned-level li>span{color:var(--color-faint);text-align:center;font-family:IBM Plex Mono,monospace;font-size:.75rem}.planned-level li>strong{font-size:.9375rem}.planned-level li>small{color:var(--color-muted);font-size:.75rem;font-weight:700}.lesson-screen{background:var(--color-bg);width:min(100%,74rem);min-height:100dvh;margin-inline:auto}.lesson-header{align-items:center;gap:var(--space-3);min-height:4.25rem;padding:max(var(--space-3), env(safe-area-inset-top)) max(var(--space-4), env(safe-area-inset-right)) var(--space-3) max(var(--space-3), env(safe-area-inset-left));border-bottom:1px solid var(--color-line);grid-template-columns:auto 1fr auto;display:grid}.lesson-header>div{min-width:0;line-height:1.25;display:grid}.lesson-header span{color:var(--color-muted);font-size:.75rem}.lesson-header strong{-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:.9375rem;line-height:1.2;display:-webkit-box;overflow:hidden}.lesson-header__metrics{justify-items:end;gap:.125rem;display:grid}.lesson-duration{font-family:IBM Plex Mono,monospace}.lesson-learning-time{align-items:center;gap:var(--space-1);font-variant-numeric:tabular-nums;font-family:IBM Plex Mono,monospace;display:inline-flex;color:var(--color-signal)!important}.lesson-steps{border-bottom:1px solid var(--color-line);grid-template-columns:repeat(4,1fr);display:grid}.lesson-steps button{min-height:3.75rem;color:var(--color-faint);opacity:1;background:0 0;border:0;align-content:center;place-items:center;gap:.125rem;font-size:.6875rem;display:grid;position:relative}.lesson-steps button:not(:last-child):after{content:"";background:var(--color-line);height:1px;position:absolute;top:1.15rem;left:70%;right:-20%}.lesson-steps i{border:1px solid var(--color-line);border-radius:50%;place-items:center;width:1.5rem;height:1.5rem;font-family:IBM Plex Mono,monospace;font-style:normal;display:grid}.lesson-steps [data-state=current]{color:var(--color-ink);cursor:default}.lesson-steps [data-state=current] i{border-color:var(--color-signal);background:var(--color-signal);color:var(--color-signal-ink);font-weight:700}.lesson-steps [data-state=available]{color:var(--color-muted)}.lesson-steps button:disabled:not([data-state=current]){cursor:default}.workbench-layout{display:grid}.lesson-prompt,.decision-surface{padding:var(--space-6) var(--space-4)}.lesson-prompt{border-bottom:1px solid var(--color-line)}.lesson-prompt h1{font-size:2.25rem}.representation-tabs{margin-block:var(--space-6) var(--space-4);border:1px solid var(--color-line);border-radius:var(--radius-sm);background:var(--color-bg-soft);grid-template-columns:repeat(3,1fr);padding:.1875rem;display:grid}.representation-tab{min-height:2.75rem;color:var(--color-muted);background:0 0;border:0;border-radius:.375rem;font-size:.75rem;font-weight:600}.representation-tab[aria-selected=true]{background:var(--color-signal-soft);color:var(--color-signal)}.representation-content{border-block:1px solid var(--color-line);min-height:7rem;padding-block:var(--space-4);align-items:center;display:flex}.representation-content p{max-width:46ch;color:var(--color-ink);margin:0;font-size:1.0625rem}.representation-content pre{max-width:100%;color:var(--color-ink);margin:0;font-size:.8125rem;line-height:1.7;overflow-x:auto}.coaching-note{align-items:flex-start;gap:var(--space-3);color:var(--color-signal);margin-block-start:var(--space-4);display:flex}.coaching-note p{margin:0;font-size:.875rem;display:grid}.coaching-note strong{color:var(--color-ink)}.decision-surface__header{justify-content:space-between;align-items:flex-start;gap:var(--space-4);display:flex}.decision-surface__header>svg{color:var(--color-signal)}.answer-list{gap:var(--space-3);display:grid}.answer-option{align-items:start;gap:var(--space-3);border:1px solid var(--color-line);border-radius:var(--radius-md);background:var(--color-surface);min-height:4.5rem;padding:var(--space-3);text-align:left;transition:border-color .17s var(--ease-out-quart), background-color .17s var(--ease-out-quart), transform .12s var(--ease-out-quart);grid-template-columns:auto minmax(0,1fr) auto;display:grid}.answer-option:not([data-disabled=true]):hover{border-color:var(--color-line-strong);background:var(--color-surface-raised)}.answer-option:not([data-disabled=true]):active{transform:scale(.995)}.answer-option[data-selected=true]{border-color:var(--color-signal);background:var(--color-signal-soft)}.answer-option__id{border-radius:var(--radius-sm);background:var(--color-surface-raised);width:2rem;height:2rem;color:var(--color-muted);place-items:center;font-family:IBM Plex Mono,monospace;font-size:.8125rem;font-weight:700;display:grid}.answer-option[data-selected=true] .answer-option__id{background:var(--color-signal);color:var(--color-signal-ink)}.answer-option__copy{gap:var(--space-1);min-width:0;display:grid}.answer-option__copy strong{font-size:.9375rem}.answer-option__copy small{color:var(--color-muted);font-size:.75rem}.answer-option__status{width:1.75rem;height:1.75rem;color:var(--color-signal);place-items:center;display:grid}.answer-option__status i{border:1px solid var(--color-line-strong);border-radius:50%;width:1rem;height:1rem}.folder-tree{border-top:1px solid var(--color-line);margin-block-start:var(--space-3);padding-block-start:var(--space-3);display:none}.answer-option[data-selected=true] .folder-tree{display:grid}.folder-tree__row{gap:var(--space-2);color:var(--color-muted);padding-inline-start:calc(var(--tree-depth) * .875rem);font-size:.75rem;line-height:1.55;display:flex}.folder-tree__row[data-intent=true]{color:var(--color-intent)}.lesson-action-dock{z-index:15;gap:var(--space-3);padding:var(--space-3) max(var(--space-4), env(safe-area-inset-right)) max(var(--space-3), env(safe-area-inset-bottom)) max(var(--space-4), env(safe-area-inset-left));border-top:1px solid var(--color-line);background:var(--color-bg);display:grid;position:sticky;bottom:0}.lesson-action-dock__message>p{margin:0;font-size:.8125rem}.lesson-action{width:100%}.concepts-heading{justify-content:space-between;align-items:flex-start;gap:var(--space-4);display:flex}.concepts-heading>div:first-child{min-width:0}.concepts-heading h1{margin-block-end:var(--space-2)}.concepts-heading p{max-width:48ch;margin:0}.concepts-heading__count{color:var(--color-muted);text-align:right;flex:0 0 6.75rem;justify-items:end;display:grid}.concepts-heading__count strong{color:var(--color-signal);font-family:IBM Plex Mono,monospace;font-size:1.75rem;line-height:1}.concepts-heading__count span{font-size:.75rem;font-weight:700}.concepts-heading__count small{margin-block-start:var(--space-2);font-size:.6875rem;line-height:1.35}.concept-tools{gap:var(--space-4);padding-block:var(--space-6);border-block:1px solid var(--color-line);display:grid}.concept-search{gap:var(--space-2);color:var(--color-ink);font-size:.8125rem;font-weight:700;display:grid}.concept-search>div{align-items:center;gap:var(--space-2);border:1px solid var(--color-line-strong);border-radius:var(--radius-sm);background:var(--color-surface);min-height:3rem;padding-inline:var(--space-3);grid-template-columns:auto minmax(0,1fr);display:grid}.concept-search>div:focus-within{border-color:var(--color-signal)}.concept-search svg{color:var(--color-muted)}.concept-search input{min-width:0;height:100%;color:var(--color-ink);background:0 0;border:0;outline:0;font-size:.9375rem}.concept-search input::placeholder{color:var(--color-faint)}.concept-search input::-webkit-search-cancel-button{filter:invert()}.concept-filters{gap:var(--space-2);margin-inline:calc(var(--space-4) * -1);padding-inline:var(--space-4);scrollbar-width:none;display:flex;overflow-x:auto}.concept-filters::-webkit-scrollbar{display:none}.concept-filter{min-height:2.75rem;color:var(--color-muted);white-space:nowrap;border-radius:999px;flex:none;place-items:center;font-size:.75rem;font-weight:700;display:grid;position:relative}.concept-filter__select{border:1px solid var(--color-line);background:0 0;border-radius:999px;width:100%;position:absolute;inset:0}.concept-filter__label{z-index:1;padding-inline:var(--space-3);pointer-events:none;position:relative}.concept-filter__label .acronym-trigger{pointer-events:auto;position:relative}.concept-filter:hover{color:var(--color-ink)}.concept-filter__select:hover{border-color:var(--color-line-strong)}.concept-filter[data-selected=true]{color:var(--color-signal)}.concept-filter__select[aria-pressed=true]{border-color:var(--color-signal);background:var(--color-signal-soft)}.concept-groups{gap:var(--space-8);display:grid}.concept-group__header{align-items:start;gap:var(--space-3);border-bottom:1px solid var(--color-line-strong);grid-template-columns:auto minmax(0,1fr) auto;padding-block-end:var(--space-4);display:grid}.concept-group__header>svg{color:var(--color-signal);margin-block-start:.125rem}.concept-group__header h2{margin:0;font-size:1.125rem}.concept-group__header p{margin:var(--space-1) 0 0;font-size:.8125rem}.concept-group__header>span{color:var(--color-muted);font-family:IBM Plex Mono,monospace;font-size:.8125rem}.concept-list{display:grid}.concept-row{border-bottom:1px solid var(--color-line)}.concept-row__toggle{align-items:start;gap:var(--space-3);width:100%;min-height:5.5rem;padding:var(--space-4) 0;text-align:left;cursor:pointer;background:0 0;border:0;grid-template-columns:1.5rem minmax(0,1fr) auto;display:grid}.concept-row__toggle:hover .concept-row__summary>strong{color:var(--color-signal)}.concept-row__expand{border-radius:var(--radius-sm);width:2.75rem;height:2.75rem;color:var(--color-muted);background:0 0;border:0;place-items:center;margin-block-start:-.5rem;display:grid}.concept-row__expand svg{transition:rotate .18s var(--ease-out-quart)}.concept-row__expand[aria-expanded=true] svg{rotate:180deg}.concept-row__status{border:1px solid var(--color-line-strong);width:1.5rem;height:1.5rem;color:var(--color-signal);border-radius:50%;place-items:center;display:grid}.concept-row__status>span{background:var(--color-faint);border-radius:50%;width:.375rem;height:.375rem}.concept-row[data-state=encountered] .concept-row__status{border-color:var(--color-signal);background:var(--color-signal-soft)}.concept-row[data-state=available] .concept-row__status{border-color:var(--color-signal)}.concept-row[data-state=available] .concept-row__status>span{background:var(--color-signal)}.concept-row__summary{gap:var(--space-1);min-width:0;display:grid}.concept-row__summary>strong{color:var(--color-ink);transition:color .14s var(--ease-out-quart);font-size:.9375rem}.concept-row__summary>small{max-width:62ch;color:var(--color-muted);font-size:.8125rem;line-height:1.45}.concept-row__summary>span{gap:var(--space-1) var(--space-2);color:var(--color-faint);flex-wrap:wrap;font-family:IBM Plex Mono,monospace;font-size:.6875rem;font-weight:700;display:flex}.concept-row[data-state=encountered] .concept-row__summary>span,.concept-row[data-state=available] .concept-row__summary>span{color:var(--color-signal)}.concept-row__summary>span i{color:var(--color-faint);font-style:normal;font-weight:500}.concept-row__details{gap:var(--space-6);padding:var(--space-4) 0 var(--space-6) var(--space-3);border-left:1px solid var(--color-line-strong);margin-inline-start:2.25rem;display:grid}.concept-explanation{gap:var(--space-4);margin:0;display:grid}.concept-explanation>div{gap:var(--space-1);display:grid}.concept-explanation dt,.concept-lessons h3,.applied-concepts h3,.concept-sources h3{color:var(--color-ink);letter-spacing:.015em;text-transform:uppercase;font-size:.75rem;font-weight:700}.concept-explanation dd{max-width:65ch;color:var(--color-muted);margin:0;font-size:.875rem}.concept-lessons{border-top:1px solid var(--color-line);padding-block-start:var(--space-4)}.concept-lessons h3,.applied-concepts h3,.concept-sources h3{margin:0 0 var(--space-2)}.concept-lessons ul{margin:0;padding:0;list-style:none;display:grid}.concept-lessons li{justify-content:space-between;align-items:center;gap:var(--space-3);min-height:3.75rem;padding-block:var(--space-2);display:flex}.concept-lessons li+li{border-top:1px solid var(--color-line)}.concept-lessons li>span{min-width:0;display:grid}.concept-lessons li strong{font-size:.8125rem}.concept-lessons li small{color:var(--color-muted);font-size:.6875rem}.concept-lessons li>button{align-items:center;gap:var(--space-1);min-height:2.75rem;color:var(--color-signal);background:0 0;border:0;font-size:.75rem;font-weight:700;display:inline-flex}.applied-concepts{border-top:1px solid var(--color-line);padding-block-start:var(--space-4)}.applied-concepts ul,.concept-sources ul{margin:0;padding:0;list-style:none;display:grid}.applied-concepts li{gap:var(--space-1);padding-block:var(--space-3);display:grid}.applied-concepts li+li{border-top:1px solid var(--color-line)}.applied-concepts li>span{align-items:baseline;gap:var(--space-2);flex-wrap:wrap;display:flex}.applied-concepts strong{font-size:.8125rem}.applied-concepts small{color:var(--color-faint);font-family:IBM Plex Mono,monospace;font-size:.6875rem}.applied-concepts p{max-width:65ch;color:var(--color-muted);margin:0;font-size:.8125rem}.concept-sources{border-top:1px solid var(--color-line);padding-block-start:var(--space-4)}.concept-sources__connection{max-width:68ch;margin:var(--space-2) 0 var(--space-4);color:var(--color-muted);line-height:1.55}.concept-sources li+li{border-top:1px solid var(--color-line)}.concept-sources li{min-height:3.5rem;padding-block:var(--space-3);position:relative}.concept-source__copy{z-index:1;pointer-events:none;gap:.125rem;min-width:0;padding-inline-end:3.5rem;display:grid;position:relative}.concept-source__copy .acronym-trigger{pointer-events:auto}.concept-source__link{inset:var(--space-1) 0;border-radius:var(--radius-sm);color:var(--color-signal);text-decoration:none;position:absolute}.concept-source__link svg{top:50%;right:var(--space-3);position:absolute;translate:0 -50%}.concept-source__link:hover,.concept-source__link:focus-visible{background:var(--color-signal-soft)}.concept-sources small{color:var(--color-faint);font-size:.6875rem}.concept-sources strong{font-size:.8125rem}.concept-sources i{color:var(--color-muted);font-size:.75rem;font-style:normal}.concept-empty{padding-block:var(--space-8);justify-items:start;display:grid}.concept-empty>svg{color:var(--color-muted);margin-block-end:var(--space-3)}.concept-empty h2{margin-block-end:var(--space-1)}.concept-empty p{margin-block-end:var(--space-4)}.lesson-concepts{padding-block:var(--space-6);border-bottom:1px solid var(--color-line)}.lesson-concepts h2{margin-block-end:var(--space-3);font-size:.875rem}.lesson-concept-selector{border-top:1px solid var(--color-line);margin:0;padding:0;list-style:none;display:grid}.lesson-concept-selector li{align-items:center;gap:var(--space-2);border-bottom:1px solid var(--color-line);min-height:3.5rem;color:var(--color-muted);padding:var(--space-1) 0;cursor:pointer;transition:color .14s var(--ease-out-quart);grid-template-columns:2.75rem minmax(0,1fr) auto;display:grid}.lesson-concept-selector li:hover{color:var(--color-ink)}.lesson-concept-selector li[data-selected=true]{color:var(--color-signal)}.lesson-concept-selector__choice{border-radius:var(--radius-sm);background:0 0;border:0;place-items:center;width:2.75rem;height:2.75rem;padding:0;display:grid}.lesson-concept-selector li>strong{font-size:.875rem}.lesson-concept-selector li>small{color:var(--color-faint);font-size:.6875rem;font-weight:650}.lesson-concept-selector li[data-selected=true]>small{color:var(--color-signal)}.lesson-concept-selector__mark{border:1px solid var(--color-line-strong);border-radius:50%;place-items:center;width:1.5rem;height:1.5rem;display:grid}.lesson-concept-selector__choice[aria-pressed=true] .lesson-concept-selector__mark{border-color:var(--color-signal);background:var(--color-signal-soft)}.lesson-concept-detail{border-radius:var(--radius-md);background:var(--color-surface);padding:var(--space-4);margin-block-start:var(--space-4)}.lesson-concept-detail>p{max-width:65ch;color:var(--color-ink);margin-block-end:var(--space-4);font-size:.9375rem}.lesson-concept-detail dl{gap:var(--space-3);margin:0;display:grid}.lesson-concept-detail dl>div{gap:var(--space-1);display:grid}.lesson-concept-detail dt{color:var(--color-signal);font-size:.75rem;font-weight:700}.lesson-concept-detail dd{max-width:65ch;color:var(--color-muted);margin:0;font-size:.875rem}.lesson-applied-concepts{border-top:1px solid var(--color-line);margin-block-start:var(--space-6);padding-block-start:var(--space-6)}.lesson-applied-concepts h3{margin:0 0 var(--space-3);font-size:.875rem}.lesson-applied-concepts ul{margin:0;padding:0;list-style:none;display:grid}.lesson-applied-concepts li{padding-block:var(--space-3)}.lesson-applied-concepts li+li{border-top:1px solid var(--color-line)}.lesson-applied-concepts li>div{justify-content:space-between;align-items:baseline;gap:var(--space-3);display:flex}.lesson-applied-concepts li strong{color:var(--color-ink);font-size:.8125rem}.lesson-applied-concepts li small{color:var(--color-faint);flex:none;font-size:.6875rem}.lesson-applied-concepts li p{max-width:65ch;margin:var(--space-1) 0 0;font-size:.8125rem}.leaderboard-heading,.profile-heading{justify-content:space-between;align-items:flex-start;gap:var(--space-4);display:flex}.leaderboard-heading>svg{color:var(--color-signal);flex:none}.leaderboard-heading p:last-child{max-width:48ch}.leaderboard-list{gap:var(--space-2);margin:0;padding:0;list-style:none;display:grid}.leaderboard-list li{align-items:center;gap:var(--space-3);border-bottom:1px solid var(--color-line);min-height:4.5rem;padding:var(--space-3) var(--space-2);grid-template-columns:2rem 2.5rem minmax(0,1fr) auto;display:grid}.leaderboard-list li[data-current=true]{border:1px solid var(--color-signal);border-radius:var(--radius-md);background:var(--color-signal-soft)}.leaderboard-rank{color:var(--color-muted);place-items:center;font-family:IBM Plex Mono,monospace;font-size:.8125rem;display:grid}.leaderboard-rank svg{color:var(--color-warning)}.leaderboard-avatar{width:2.5rem;height:2.5rem}.leaderboard-name,.leaderboard-metrics{min-width:0;display:grid}.leaderboard-name strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.leaderboard-name small,.leaderboard-metrics small{color:var(--color-muted);font-size:.6875rem}.leaderboard-metrics{gap:var(--space-3);grid-template-columns:repeat(2,auto)}.leaderboard-metrics>span{font-variant-numeric:tabular-nums;justify-items:end;display:grid}.empty-state{border-radius:var(--radius-md);background:var(--color-surface);padding:var(--space-4);margin:0;font-size:.875rem}.leaderboard-skeleton{gap:var(--space-3);display:grid}.leaderboard-skeleton span{height:4rem}.profile-heading{justify-content:flex-start}.profile-heading__avatar{width:3.5rem;height:3.5rem}.profile-heading p{margin:0}.profile-settings{max-width:36rem;padding:var(--space-6);border-radius:var(--radius-lg);background:var(--color-surface)}.profile-evidence{border-top:1px solid var(--color-line);padding-block-start:var(--space-6)}.profile-bookmarks{max-width:42rem;border-top:1px solid var(--color-line);padding-block-start:var(--space-6)}.profile-bookmarks>header,.profile-bookmarks>header>div{align-items:center;gap:var(--space-2);display:flex}.profile-bookmarks>header{justify-content:space-between;margin-block-end:var(--space-3)}.profile-bookmarks h2{margin:0;font-size:1.0625rem}.profile-bookmarks>header>div>svg{color:var(--color-signal)}.profile-bookmarks>header>span{color:var(--color-muted);font-family:IBM Plex Mono,monospace;font-size:.8125rem}.profile-bookmarks ul{border-top:1px solid var(--color-line);margin:0;padding:0;list-style:none}.profile-bookmarks li{align-items:center;gap:var(--space-2);grid-template-columns:minmax(0,1fr) auto;display:grid}.profile-bookmarks li+li{border-top:1px solid var(--color-line)}.profile-bookmark__open{justify-content:space-between;align-items:center;gap:var(--space-3);min-width:0;min-height:4.5rem;color:var(--color-ink);padding:var(--space-3) 0;text-align:left;background:0 0;border:0;display:flex}.profile-bookmark__open>span{gap:var(--space-1);min-width:0;display:grid}.profile-bookmark__open strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.profile-bookmark__open small{align-items:center;gap:var(--space-1);color:var(--color-muted);display:flex}.profile-bookmark__open small i{font-style:normal}.profile-bookmark__open>svg{color:var(--color-muted);flex:none}.profile-bookmark__open:hover,.profile-bookmark__open:hover>svg{color:var(--color-signal)}.profile-bookmark__remove{color:var(--color-muted)}.profile-evidence dl{gap:var(--space-3);margin:0;display:grid}.profile-evidence dl div{justify-content:space-between;align-items:center;gap:var(--space-4);padding-block:var(--space-2);border-bottom:1px solid var(--color-line);display:flex}.profile-evidence dt{color:var(--color-muted)}.profile-evidence dd{margin:0;font-family:IBM Plex Mono,monospace}.visually-hidden{clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.briefing-screen{background:var(--color-bg);width:min(100%,74rem);min-height:100dvh;margin-inline:auto}.briefing-header{align-items:center;gap:var(--space-3);min-height:4.25rem;padding:max(var(--space-3), env(safe-area-inset-top)) max(var(--space-4), env(safe-area-inset-right)) var(--space-3) max(var(--space-4), env(safe-area-inset-left));border-bottom:1px solid var(--color-line);background:var(--color-bg);grid-template-columns:1fr auto 2.75rem;display:grid}.briefing-header>span{color:var(--color-muted);font-size:.75rem}.briefing-progress{border-bottom:1px solid var(--color-line);grid-template-columns:repeat(5,1fr);display:grid}.briefing-progress span{min-height:4rem;color:var(--color-faint);text-align:center;align-content:center;place-items:center;gap:.125rem;font-size:.625rem;display:grid;position:relative}.briefing-progress span:not(:last-child):after{content:"";background:var(--color-line);height:1px;position:absolute;top:1.25rem;left:70%;right:-18%}.briefing-progress i{border:1px solid var(--color-line);border-radius:50%;place-items:center;width:1.5rem;height:1.5rem;font-family:IBM Plex Mono,monospace;font-style:normal;display:grid}.briefing-progress [data-state=current]{color:var(--color-ink)}.briefing-progress [data-state=current] i{border-color:var(--color-signal);background:var(--color-signal);color:var(--color-signal-ink);font-weight:700}.briefing-progress [data-state=complete]{color:var(--color-signal)}.briefing-progress [data-state=complete] i{border-color:var(--color-signal);background:var(--color-signal-soft)}.briefing-content{padding:var(--space-8) var(--space-4) 7.5rem}.briefing-article{max-width:58rem;margin-inline:auto}.briefing-lede{align-items:start;gap:var(--space-4);border-bottom:1px solid var(--color-line);padding-block-end:var(--space-8);display:grid}.briefing-icon{border-radius:var(--radius-md);background:var(--color-signal-soft);width:3rem;height:3rem;color:var(--color-signal);place-items:center;display:grid}.briefing-lede h1{max-width:19ch}.briefing-lede p:last-child{max-width:65ch;margin:0}.briefing-section{padding-block:var(--space-8);border-bottom:1px solid var(--color-line)}.briefing-section>p{max-width:67ch}.ai-method,.principle-connection,.next-build-position{align-items:flex-start;gap:var(--space-4);display:flex}.ai-method>svg,.principle-connection>svg,.next-build-position>svg{color:var(--color-signal);flex:none;margin-block-start:.125rem}.ai-method p,.principle-connection p,.next-build-position p{max-width:68ch;margin:0}.role-list{gap:var(--space-3);margin:var(--space-4) 0 0;padding:0;list-style:none;display:grid}.role-list li{max-width:68ch;color:var(--color-muted)}.role-list strong{color:var(--color-ink)}.care-journey{gap:var(--space-2);margin:var(--space-4) 0;counter-reset:care-step;flex-wrap:wrap;padding:0;list-style:none;display:flex}.care-journey li{align-items:center;gap:var(--space-2);color:var(--color-ink);font-size:.875rem;display:inline-flex}.care-journey li:not(:last-child):after{content:"→";color:var(--color-faint)}.ai-method,.principle-connection,.next-build-position{border-radius:var(--radius-md);background:var(--color-surface);padding:var(--space-4);margin-block-start:var(--space-8)}.ai-method h2,.principle-connection h2,.next-build-position h2{margin-block-end:var(--space-2);font-size:1.0625rem}.system-path{gap:var(--space-2);margin-block:var(--space-8);font-family:IBM Plex Mono,monospace;font-size:.8125rem;display:grid}.system-path span{border:1px solid var(--color-line);border-radius:var(--radius-sm);background:var(--color-surface);padding:var(--space-3)}.system-path i{color:var(--color-signal);text-align:center;font-style:normal}.stack-ledger{border-top:1px solid var(--color-line);margin:0}.stack-ledger>div{gap:var(--space-2);padding-block:var(--space-4);border-bottom:1px solid var(--color-line);display:grid}.stack-ledger dt{align-items:center;gap:var(--space-2);color:var(--color-ink);font-weight:700;display:flex}.stack-ledger dt svg{color:var(--color-signal)}.stack-ledger dd{max-width:65ch;color:var(--color-muted);margin:0}.build-order{margin:var(--space-8) 0 0;padding:0;list-style:none}.build-order li{gap:var(--space-4);grid-template-columns:2.25rem minmax(0,1fr);padding-block-end:var(--space-6);display:grid;position:relative}.build-order li:not(:last-child):before{content:"";background:var(--color-line);width:1px;position:absolute;top:2.25rem;bottom:0;left:1.0625rem}.build-order li>span{border:1px solid var(--color-line-strong);background:var(--color-bg);width:2.25rem;height:2.25rem;color:var(--color-signal);border-radius:50%;place-items:center;font-family:IBM Plex Mono,monospace;font-size:.8125rem;font-weight:700;display:grid}.build-order__now{background:var(--color-signal-soft);color:var(--color-signal);padding:.1875rem var(--space-3);border-radius:999px;margin-block-end:var(--space-2);font-size:.75rem;font-style:normal;font-weight:650;display:inline-block}.build-order h2{margin-block-end:var(--space-1);font-size:1.0625rem}.build-order p{max-width:65ch;margin:0}.repo-panel{border:1px solid var(--color-line);border-radius:var(--radius-md);background:var(--color-surface);margin-block-start:var(--space-6)}.repo-panel__header{align-items:center;gap:var(--space-3);border-radius:var(--radius-md);width:100%;min-height:3rem;color:var(--color-ink);padding:var(--space-3) var(--space-4);text-align:left;transition:background-color .15s var(--ease-out-quart);background:0 0;border:0;display:flex}.repo-panel__header:hover{background:var(--color-surface-raised)}.repo-panel__header>svg{color:var(--color-signal);flex:none}.repo-panel__title{font-size:.9375rem;font-weight:700}.repo-panel__meta{color:var(--color-muted);white-space:nowrap;margin-inline-start:auto;font-size:.8125rem}.repo-panel__chevron{color:var(--color-muted);transition:transform .16s var(--ease-out-quart);flex:none}.repo-panel[data-open=true] .repo-panel__chevron{transform:rotate(90deg)}.repo-panel__body{border-top:1px solid var(--color-line);padding:var(--space-3) var(--space-4) var(--space-4);overflow-x:auto}.repo-panel__summary{max-width:65ch;margin:0 0 var(--space-2);color:var(--color-muted);font-size:.875rem}.repo-panel__summary:last-child{margin-block-end:0}.repo-tree,.repo-tree ul{margin:0;padding:0;font-family:IBM Plex Mono,monospace;font-size:.8125rem;list-style:none}.repo-tree{width:max-content;min-width:100%}.repo-tree ul{border-inline-start:1px solid var(--color-line);margin-inline-start:.4375rem;padding-inline-start:var(--space-4)}.repo-tree__row{align-items:center;gap:var(--space-2);width:100%;min-width:0;min-height:2rem;padding:0;display:flex}button.repo-tree__row{min-height:2.75rem;color:var(--color-ink);font:inherit;text-align:left;background:0 0;border:0}.repo-tree__chevron{color:var(--color-faint);transition:transform .16s var(--ease-out-quart);flex:none}.repo-tree__spacer{flex:none;width:.9375rem}.repo-tree__row[data-open=true] .repo-tree__chevron{transform:rotate(90deg)}.repo-tree__name{color:var(--color-ink);white-space:nowrap}.repo-tree__row--directory .repo-tree__name{font-weight:600}.repo-tree__note{color:var(--color-faint);white-space:nowrap;font-family:IBM Plex Sans Variable,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:.75rem}.repo-tree__count{color:var(--color-faint);flex:none;margin-inline-start:auto;font-size:.75rem}.repo-tree__name[data-change=added]{color:var(--color-signal)}.repo-tree__name[data-change=modified]{color:var(--color-warning)}.repo-tree__count--changes{gap:var(--space-2);font-weight:650;display:inline-flex}.repo-tree__count--changes [data-kind=added]{color:var(--color-signal)}.repo-tree__count--changes [data-kind=modified]{color:var(--color-warning)}.repo-chip{border-radius:.3125rem;flex:none;align-self:center;place-items:center;width:1.25rem;height:1.25rem;font-size:.6875rem;font-weight:700;display:grid}.repo-chip[data-kind=added]{background:var(--color-signal-soft);color:var(--color-signal)}.repo-chip[data-kind=modified]{background:var(--color-warning-soft);color:var(--color-warning)}.repo-tree .repo-chip{margin-inline-start:auto}.repo-tree .repo-chip~.repo-tree__count{margin-inline-start:0}.intent-definition{margin-block-start:var(--space-8)}.intent-definition>p{max-width:65ch}.intent-definition>div{gap:var(--space-3);padding-block:var(--space-4);border-top:1px solid var(--color-line);grid-template-columns:5.5rem minmax(0,1fr);display:grid}.intent-definition>div:last-child{border-bottom:1px solid var(--color-line)}.intent-definition>div>span{color:var(--color-signal);font-size:.8125rem;font-weight:700}.intent-definition>div[data-kind=counterexample]>span{color:var(--color-intent)}.intent-definition>div p{margin:0}.learning-loop{gap:var(--space-2);margin-block:var(--space-8);display:grid}.learning-loop div{gap:var(--space-3);padding-block:var(--space-2);border-bottom:1px solid var(--color-line);grid-template-columns:5rem minmax(0,1fr);display:grid}.learning-loop strong{color:var(--color-signal)}.learning-loop span{color:var(--color-muted)}.briefing-actions{z-index:30;align-items:center;gap:var(--space-3);border-top:1px solid var(--color-line);background:var(--color-bg);min-height:4.75rem;padding:var(--space-3) max(var(--space-4), env(safe-area-inset-right)) max(var(--space-3), env(safe-area-inset-bottom)) max(var(--space-4), env(safe-area-inset-left));grid-template-columns:minmax(0,1fr) auto;display:grid;position:fixed;bottom:0;left:0;right:0}.briefing-actions>div{min-width:0}.briefing-actions .form-error{grid-area:1/1/auto/-1}.briefing-link{align-items:center;gap:var(--space-2);min-height:2.75rem;margin-block:var(--space-2) var(--space-4);color:var(--color-signal);text-align:left;background:0 0;border:0;padding:0;font-weight:700;display:inline-flex}.briefing-link:hover{color:var(--color-ink)}.lesson-stage{min-height:calc(100dvh - 12rem)}.lesson-reading,.decision-surface{max-width:58rem;padding:var(--space-8) var(--space-4) 8rem;margin-inline:auto}.lesson-reading__header{border-bottom:1px solid var(--color-line);padding-block-end:var(--space-6)}.lesson-reading__header h1,.decision-surface__header h1{max-width:21ch;font-size:2rem}.lesson-reading__header>p:last-child,.decision-surface__header p:last-child{max-width:66ch}.build-position{gap:var(--space-6);padding-block:var(--space-8);border-bottom:1px solid var(--color-line);display:grid}.build-position__map{border-radius:var(--radius-md);background:var(--color-surface);min-width:0;padding:var(--space-4);gap:.375rem;display:grid}.build-position__map code{gap:var(--space-2);min-width:0;color:var(--color-muted);grid-template-columns:max-content minmax(0,1fr);font-size:.8125rem;line-height:1.45;display:grid}.build-position__note{color:var(--color-faint)}.build-position__map [data-current=true]{color:var(--color-signal);font-weight:700}.build-position__map [data-current=true] .build-position__note{color:inherit}.lesson-visual{border-radius:var(--radius-md);background:var(--color-surface);min-width:0;padding:var(--space-4);margin:0;overflow:hidden;container-type:inline-size}.lesson-visual[data-compact=true]{background:0 0;border-radius:0;padding:0}.lesson-visual figcaption{color:var(--color-muted);margin-block-start:var(--space-4);font-size:.8125rem;line-height:1.5}.lesson-visual strong,.lesson-visual small{overflow-wrap:anywhere;min-width:0}.commit-visual{display:grid}.commit-visual__item{align-items:start;gap:var(--space-2);min-width:0;padding-block:var(--space-2);grid-template-columns:1.75rem minmax(0,1fr) auto;display:grid;position:relative}.commit-visual__item>div{gap:var(--space-2);min-width:0;display:grid}.commit-visual__rail{z-index:1;color:var(--color-signal);place-items:center;display:grid;position:relative}.commit-visual__connector{background:var(--color-line-strong);width:1px;position:absolute;top:2rem;bottom:-.5rem;left:.84375rem}.commit-visual__tags{gap:var(--space-1);flex-wrap:wrap;display:flex}.commit-visual__tags i{background:var(--color-bg-soft);color:var(--color-muted);border-radius:999px;padding:.125rem .4375rem;font-family:IBM Plex Mono,monospace;font-size:.6875rem;font-style:normal}.commit-visual__verified{align-items:center;gap:var(--space-1);background:var(--color-signal-soft);color:var(--color-signal);border-radius:999px;padding:.125rem .4375rem;font-size:.6875rem;font-weight:700;display:inline-flex}.visual-flow{gap:var(--space-1);display:grid}.visual-flow__segment{grid-template-columns:var(--visual-flow-segment-columns,minmax(0, 1fr));grid-template-rows:var(--visual-flow-segment-rows,auto 1.25rem);align-items:center;gap:var(--space-1);min-width:0;display:grid}.visual-flow__segment:last-child{grid-template-rows:auto;grid-template-columns:minmax(0,1fr)}.visual-flow__node{align-items:center;gap:var(--space-2);border:1px solid var(--color-line);border-radius:var(--radius-sm);background:var(--color-bg-soft);min-width:0;padding:var(--space-2);grid-template-columns:1.5rem minmax(0,1fr);display:grid}.visual-flow__node>span{background:var(--color-surface-raised);width:1.5rem;height:1.5rem;color:var(--color-muted);border-radius:50%;place-items:center;display:grid}.visual-flow__node strong,.visual-flow__node small{min-width:0}.visual-flow__node strong{font-size:.8125rem;line-height:1.35}.visual-flow__node small{color:var(--color-faint);grid-column:2;font-size:.6875rem;line-height:1.35}.visual-flow__node[data-state=current]{border-color:var(--color-signal)}.visual-flow__node[data-state=current]>span,.visual-flow__node[data-state=good]>span{background:var(--color-signal-soft);color:var(--color-signal)}.visual-flow__node[data-state=warning]>span{background:var(--color-warning-soft);color:var(--color-warning)}.visual-flow__node[data-state=muted]{opacity:.72}.visual-flow__arrow{color:var(--color-faint);rotate:var(--visual-flow-arrow-rotation,90deg);justify-self:center}.visual-card{gap:var(--space-1);border:1px solid var(--color-line);border-radius:var(--radius-sm);background:var(--color-bg-soft);min-width:0;padding:var(--space-2) var(--space-3);display:grid}.visual-card strong{font-size:.8125rem;line-height:1.35}.visual-card strong[data-mono=true]{font-family:IBM Plex Mono,monospace;font-weight:650}.visual-card small{color:var(--color-faint);font-size:.6875rem;line-height:1.4}.visual-card[data-tone=declaration]{border-color:var(--color-line-strong);background:0 0}.visual-card[data-tone=check],.visual-card[data-tone=review]{background:var(--color-surface-raised)}.visual-card[data-tone=pass]{border-color:color-mix(in srgb, var(--color-signal) 34%, var(--color-line))}.visual-card[data-tone=caught]{border-color:color-mix(in srgb, var(--color-warning) 34%, var(--color-line))}.visual-card__tag{letter-spacing:.04em;text-transform:uppercase;color:var(--color-muted);justify-self:start;align-items:center;gap:.3rem;font-size:.625rem;font-weight:700;display:inline-flex}.visual-card[data-tone=pass] .visual-card__tag{color:var(--color-signal)}.visual-card[data-tone=caught] .visual-card__tag{color:var(--color-warning)}.visual-card__lines{gap:.1875rem;display:grid}.visual-card__lines code{min-width:0;color:var(--color-muted);overflow-wrap:anywhere;font-family:IBM Plex Mono,monospace;font-size:.6875rem}.visual-card__chips{gap:var(--space-1);flex-wrap:wrap;display:flex}.visual-card__chips i{background:var(--color-surface-hover);color:var(--color-muted);border-radius:999px;padding:.125rem .4375rem;font-family:IBM Plex Mono,monospace;font-size:.625rem;font-style:normal}.visual-card__catches{color:var(--color-warning);align-items:center;gap:.3rem;font-size:.6875rem;display:inline-flex}.visual-card__catches svg{flex:none}.visual-gate,.visual-fork{gap:var(--space-2);max-width:42rem;display:grid}.visual-gate__arrow,.visual-fork__arrow,.visual-layers__arrow,.visual-hub__arrow{color:var(--color-faint);justify-self:center;rotate:90deg}.visual-gate__outcomes,.visual-fork__branches{gap:var(--space-2);grid-template-columns:repeat(auto-fit,minmax(min(100%,9.5rem),1fr));margin-block-start:var(--space-1);display:grid}.visual-layers{gap:var(--space-1);max-width:34rem;display:grid}.visual-layers__segment{gap:var(--space-1);display:grid}.visual-scope{gap:var(--space-2);max-width:34rem;display:grid}.visual-scope__band{border:1px solid var(--color-line);border-radius:var(--radius-sm);background:var(--color-bg-soft);min-width:0;padding:var(--space-2) var(--space-3);gap:.125rem;display:grid}.visual-scope__band strong{font-size:.8125rem}.visual-scope__band small{color:var(--color-muted);font-size:.6875rem}.visual-scope__band>span{color:var(--color-faint);font-size:.6875rem}.visual-scope__band[data-band="0"]{border-color:color-mix(in srgb, var(--color-signal) 34%, var(--color-line));width:100%}.visual-scope__band[data-band="1"]{border-color:var(--color-line-strong);width:76%;min-width:min(100%,12rem)}.visual-scope__band[data-band="2"]{width:52%;min-width:min(100%,11rem)}.visual-coverage{gap:var(--space-3);max-width:34rem;display:grid}.visual-coverage__legend{align-items:center;gap:var(--space-3);color:var(--color-muted);flex-wrap:wrap;font-size:.6875rem;display:flex}.visual-coverage__legend code{color:var(--color-ink);margin-inline-end:auto;font-family:IBM Plex Mono,monospace;font-size:.6875rem}.visual-coverage__legend span{align-items:center;gap:.3rem;display:inline-flex}.visual-coverage__legend span:before{content:"";border-radius:2px;width:.625rem;height:.375rem}.visual-coverage__legend span[data-covered=true]:before{background:color-mix(in srgb, var(--color-signal) 55%, var(--color-surface))}.visual-coverage__legend span[data-covered=false]:before{border:1px dashed var(--color-faint)}.visual-coverage__rows{gap:.4375rem;display:grid}.visual-coverage__row{gap:.25rem;display:grid}.visual-coverage__bar{border-radius:2px;height:.5rem}.visual-coverage__bar[data-covered=true]{background:color-mix(in srgb, var(--color-signal) 55%, var(--color-surface))}.visual-coverage__bar[data-covered=false]{border:1px dashed var(--color-faint)}.visual-coverage__bar[data-flagged]{border-color:var(--color-warning)}.visual-coverage__flag{color:var(--color-warning);align-items:center;gap:.3rem;font-size:.6875rem;display:inline-flex}.visual-coverage__flag svg{flex:none}.visual-hub{max-width:42rem;display:grid}.visual-hub__hub{justify-self:center;width:min(100%,20rem)}.visual-hub__tick{background:var(--color-line-strong);justify-self:center;width:1px;height:.75rem;display:none}.visual-hub__rail{background:var(--color-line-strong);height:1px;margin-inline:calc(100% / (var(--spokes) * 2));display:none}.visual-hub__spokes{gap:var(--space-2);grid-template-columns:1fr;display:grid}.visual-hub__spoke{grid-template-rows:auto 1fr;min-width:0;display:grid}.visual-hub[data-direction=in] .visual-hub__spoke{grid-template-rows:1fr auto}.visual-hub[data-direction=in] .visual-hub__spoke .visual-hub__tick{order:2}.visual-hub__arrow{margin-block:var(--space-1)}.visual-contract{gap:var(--space-3);max-width:34rem;display:grid}.visual-contract__label{color:var(--color-faint);text-align:center;margin:0;font-size:.75rem}.visual-contract__rows{margin:0;padding:0;list-style:none;display:grid}.visual-contract__rows li{align-items:baseline;gap:var(--space-1) var(--space-2);min-width:0;padding-block:var(--space-2);flex-wrap:wrap;display:flex}.visual-contract__rows li+li{border-top:1px solid var(--color-line)}.visual-contract__rows svg{color:var(--color-faint);flex:none;align-self:center}.visual-contract__rows li[data-state=now] svg{color:var(--color-signal)}.visual-contract__rows code{color:var(--color-ink);font-family:IBM Plex Mono,monospace;font-size:.8125rem}.visual-contract__rows small{color:var(--color-faint);font-size:.6875rem}.decision-signal{gap:var(--space-2);grid-template-columns:repeat(auto-fit,minmax(min(100%,7rem),1fr));width:100%;display:grid}.decision-signal>span{border:1px solid var(--color-line);border-radius:var(--radius-sm);min-width:0;color:var(--color-muted);overflow-wrap:anywhere;text-align:center;justify-content:center;align-items:center;gap:.35rem;min-height:2.4rem;padding:.45rem .5rem;font-size:.75rem;font-weight:650;display:flex}.visual-flow[data-step-count="2"]{--visual-flow-columns:2}.visual-flow[data-step-count="3"]{--visual-flow-columns:3}.visual-flow[data-step-count="4"]{--visual-flow-columns:4}.visual-flow[data-step-count="5"]{--visual-flow-columns:5}.visual-flow[data-step-count="6"]{--visual-flow-columns:6}@container (width>=30rem){.lesson-visual:not([data-compact=true]) .visual-flow:is([data-step-count="2"],[data-step-count="3"]){grid-template-columns:repeat(var(--visual-flow-columns), minmax(0, 1fr));--visual-flow-arrow-rotation:0deg;--visual-flow-segment-columns:minmax(0, 1fr) 1.25rem;--visual-flow-segment-rows:1fr;align-items:stretch}.lesson-visual:not([data-compact=true]) .visual-gate{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:stretch}.lesson-visual:not([data-compact=true]) .visual-gate__arrow{align-self:center;rotate:0deg}.lesson-visual:not([data-compact=true]) .visual-gate__outcomes{grid-column:1/-1}.lesson-visual:not([data-compact=true]) .visual-fork:has(.visual-fork__arrow){grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:stretch}.lesson-visual:not([data-compact=true]) .visual-fork__arrow{align-self:center;rotate:0deg}.lesson-visual:not([data-compact=true]) .visual-fork:has(.visual-fork__arrow) .visual-fork__branches{grid-column:1/-1}}@container (width>=36rem){.lesson-visual .visual-hub__tick,.lesson-visual .visual-hub__rail{display:block}.lesson-visual .visual-hub__spokes{grid-template-columns:repeat(var(--spokes), minmax(0, 1fr));gap:0 var(--space-2)}}@container (width>=42rem){.lesson-visual:not([data-compact=true]) .visual-flow[data-step-count="4"]{grid-template-columns:repeat(var(--visual-flow-columns), minmax(0, 1fr));--visual-flow-arrow-rotation:0deg;--visual-flow-segment-columns:minmax(0, 1fr) 1.25rem;--visual-flow-segment-rows:1fr;align-items:stretch}}@container (width>=56rem){.lesson-visual:not([data-compact=true]) .visual-flow:is([data-step-count="5"],[data-step-count="6"]){grid-template-columns:repeat(var(--visual-flow-columns), minmax(0, 1fr));--visual-flow-arrow-rotation:0deg;--visual-flow-segment-columns:minmax(0, 1fr) 1.25rem;--visual-flow-segment-rows:1fr;align-items:stretch}}.decision-signal>span[data-state=good]{background:color-mix(in srgb, var(--color-signal) 9%, transparent);border-color:color-mix(in srgb, var(--color-signal) 28%, var(--color-line));color:var(--color-signal)}.decision-signal>span[data-state=warning]{background:color-mix(in srgb, var(--color-warning) 8%, transparent);border-color:color-mix(in srgb, var(--color-warning) 26%, var(--color-line));color:var(--color-warning)}.decision-signal>span[data-state=muted]{color:var(--color-faint)}.boundary-visual{gap:var(--space-2);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.boundary-visual>div{gap:var(--space-1);border:1px solid var(--color-line);border-radius:var(--radius-sm);background:var(--color-bg-soft);min-width:0;padding:var(--space-3);display:grid}.boundary-visual>div[data-state=current]{border-color:var(--color-signal);background:var(--color-signal-soft)}.boundary-visual__wide{grid-column:1/-1}.boundary-visual strong{overflow-wrap:anywhere;font-family:IBM Plex Mono,monospace;font-size:.75rem}.boundary-visual small{align-items:center;gap:var(--space-1);color:var(--color-muted);font-size:.6875rem;display:inline-flex}.boundary-visual--many>span{color:var(--color-faint);text-align:center;grid-column:1/-1;font-size:.75rem}.portal-visual{gap:var(--space-2);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.portal-visual>span{color:var(--color-muted);text-align:center;font-size:.75rem}.portal-visual__workspace,.portal-visual__app{gap:var(--space-1);border-radius:var(--radius-sm);min-width:0;padding:var(--space-3);display:grid}.portal-visual__workspace{background:var(--color-surface-raised);grid-column:1/-1}.portal-visual__app{border:1px solid var(--color-line);background:var(--color-bg-soft)}.portal-visual__app[data-state=current]{border-color:var(--color-signal)}.portal-visual__app--wide{grid-column:1/-1}.portal-visual strong{font-size:.8125rem}.portal-visual small{color:var(--color-muted);font-size:.6875rem}.portal-visual--islands>span{grid-column:1/-1}.ownership-visual{display:grid}.ownership-visual>div{align-items:center;gap:var(--space-2);border-bottom:1px solid var(--color-line);min-width:0;padding-block:var(--space-3);grid-template-columns:minmax(0,1.2fr) 1.25rem minmax(0,.8fr);display:grid}.ownership-visual>div:first-child{border-top:1px solid var(--color-line)}.ownership-visual strong,.ownership-visual span{overflow-wrap:anywhere;min-width:0}.ownership-visual strong{font-family:IBM Plex Mono,monospace;font-size:.75rem}.ownership-visual span{color:var(--color-muted);font-size:.75rem}.ownership-visual svg{color:var(--color-faint)}.ownership-visual>div[data-state=good] svg{color:var(--color-signal)}.ownership-visual>div[data-state=warning] svg{color:var(--color-warning)}.checkpoint-visual{gap:var(--space-2);grid-template-columns:repeat(auto-fit,minmax(min(100%,9rem),1fr));display:grid}.checkpoint-visual>div{align-items:center;gap:var(--space-1) var(--space-2);border:1px solid var(--color-line);border-radius:var(--radius-sm);background:var(--color-bg-soft);min-width:0;padding:var(--space-3);grid-template-columns:1.5rem minmax(0,1fr);display:grid}.checkpoint-visual>div>span{background:var(--color-surface-raised);width:1.5rem;height:1.5rem;color:var(--color-muted);border-radius:50%;grid-row:1/3;place-items:center;display:grid}.checkpoint-visual>div[data-state=good]>span{background:var(--color-signal-soft);color:var(--color-signal)}.checkpoint-visual>div[data-state=warning]>span{background:var(--color-warning-soft);color:var(--color-warning)}.checkpoint-visual strong,.checkpoint-visual small{overflow-wrap:anywhere;min-width:0}.checkpoint-visual strong{font-size:.8125rem}.checkpoint-visual small{color:var(--color-muted);font-size:.6875rem}.build-position h2{font-size:1.0625rem}.intent-explainer{padding-block:var(--space-8);border-bottom:1px solid var(--color-line)}.intent-explainer>p{max-width:66ch}.intent-explainer blockquote{max-width:65ch;margin:var(--space-6) 0;border:1px solid var(--color-intent);border-radius:var(--radius-md);background:var(--color-intent-soft);color:var(--color-ink);padding:var(--space-4);font-size:1.0625rem}.lesson-question{align-items:flex-start;gap:var(--space-3);color:var(--color-signal);margin-block-start:var(--space-6);display:flex}.lesson-question svg{flex:none;margin-block-start:.125rem}.lesson-question p{max-width:62ch;margin:var(--space-1) 0 0}.principle-list{margin:var(--space-6) 0 0}.principle-list>div{gap:var(--space-3);padding-block:var(--space-6);border-bottom:1px solid var(--color-line);display:grid}.principle-list dt{align-items:center;gap:var(--space-3);color:var(--color-ink);font-weight:700;display:flex}.principle-list dt span{background:var(--color-signal-soft);width:1.75rem;height:1.75rem;color:var(--color-signal);border-radius:50%;flex:none;place-items:center;font-family:IBM Plex Mono,monospace;font-size:.75rem;display:grid}.principle-list dd{margin:0}.principle-list dd p{max-width:65ch;margin-block-end:var(--space-2)}.principle-list dd strong{color:var(--color-signal);font-size:.875rem}.principle-evidence{gap:var(--space-3);margin-block-start:var(--space-4);display:grid}.principle-evidence>div{border-radius:var(--radius-sm);background:var(--color-bg-soft);padding:var(--space-3)}.principle-evidence dt{color:var(--color-signal);letter-spacing:.02em;margin-block-end:var(--space-1);font-size:.75rem;display:block}.principle-evidence dd{max-width:65ch;color:var(--color-muted);font-size:.875rem}.enforcement-panel{margin-block:var(--space-8);border-bottom:1px solid var(--color-line);padding-block:var(--space-6)}.enforcement-panel>header{align-items:flex-start;gap:var(--space-3);display:flex}.enforcement-panel>header>svg{color:var(--color-signal);flex:none;margin-block-start:.125rem}.enforcement-panel h2{font-size:1.125rem}.enforcement-panel header p{max-width:65ch;margin:0}.enforcement-panel>dl{margin:var(--space-6) 0 0}.enforcement-panel>dl>div{gap:var(--space-2);padding-block:var(--space-3);border-top:1px solid var(--color-line);display:grid}.enforcement-panel dt{color:var(--color-ink);font-size:.875rem;font-weight:700}.enforcement-panel>dl>div>dd{gap:var(--space-3);margin:0;display:grid}.enforcement-panel__meaning{gap:var(--space-2);margin:0;display:grid}.enforcement-panel__meaning>div{gap:var(--space-1);display:grid}.enforcement-panel__meaning dt{color:var(--color-faint);letter-spacing:.02em;font-size:.6875rem;font-weight:650}.enforcement-panel__meaning dd{color:var(--color-muted);margin:0;font-size:.875rem}.enforcement-panel__literals{gap:var(--space-2);margin:0;padding:0;list-style:none;display:grid}.enforcement-panel__literals li{align-items:baseline;gap:var(--space-2);grid-template-columns:5.5rem minmax(0,1fr);display:grid}.enforcement-panel__literals span{color:var(--color-faint);font-size:.6875rem;font-weight:650}.enforcement-panel__literals code{overflow-wrap:anywhere;min-width:0;color:var(--color-ink);font-family:IBM Plex Mono,monospace;font-size:.75rem}.decision-surface{background:0 0}.decision-surface__header{border-bottom:1px solid var(--color-line);margin-block-end:var(--space-6);padding-block-end:var(--space-6)}.answer-list{border:0;min-width:0;margin:0;padding:0}.answer-option{cursor:pointer;position:relative}.answer-option[data-disabled=true]{cursor:wait}.answer-option__input{opacity:0;width:1px;height:1px;position:absolute}.answer-option:focus-within{outline:.1875rem solid var(--color-signal);outline-offset:.1875rem}.answer-option__details{gap:var(--space-3);border-top:1px solid var(--color-line);margin-block-start:var(--space-3);padding-block-start:var(--space-3);display:none}.answer-option[data-selected=true] .answer-option__details{display:grid}.answer-option__details>span{gap:var(--space-1);color:var(--color-muted);font-size:.8125rem;display:grid}.answer-option__details b{color:var(--color-ink)}.answer-option[data-selected=true] .folder-tree{border:0;margin:0;padding:0}.lesson-steps [data-state=complete]{color:var(--color-signal)}.lesson-steps [data-state=complete] i{border-color:var(--color-signal);background:var(--color-signal-soft)}.lesson-action-dock{grid-template-columns:1fr}.lesson-action-dock__buttons{align-items:stretch;gap:var(--space-2);display:flex}.lesson-action-dock__buttons .secondary-button{flex:none}.lesson-action-dock__buttons .lesson-action{flex:1}.review-selection{align-items:center;gap:var(--space-3);margin-block:var(--space-6);border:1px solid var(--color-line-strong);border-radius:var(--radius-md);background:var(--color-surface);padding:var(--space-4);grid-template-columns:2.25rem minmax(0,1fr) auto;display:grid}.review-selection[data-recommended=false]{border-color:var(--color-warning);background:var(--color-warning-soft)}.lesson-completion{align-items:flex-start;gap:var(--space-4);border-bottom:1px solid var(--color-line);grid-template-columns:3.5rem minmax(0,1fr) auto;padding-block-end:var(--space-6);display:grid}.lesson-bookmark{justify-items:end;gap:var(--space-1);min-width:4.75rem;display:grid}.lesson-bookmark .icon-button[aria-pressed=true]{background:var(--color-signal-soft);color:var(--color-signal)}.lesson-bookmark>span{min-height:1rem;color:var(--color-signal);font-size:.75rem}.lesson-completion__mark{background:var(--color-signal);width:3.5rem;height:3.5rem;color:var(--color-signal-ink);border-radius:50%;flex:none;place-items:center;display:grid}.lesson-completion h1{margin-block-end:var(--space-2)}.lesson-completion p{max-width:52ch;margin:0}.review-selection>span{border-radius:var(--radius-sm);background:var(--color-signal-soft);width:2.25rem;height:2.25rem;color:var(--color-signal);place-items:center;font-family:IBM Plex Mono,monospace;font-weight:700;display:grid}.review-selection h2{margin:var(--space-1) 0 0;font-size:1rem}.review-selection p{margin:0}.review-selection>svg{color:var(--color-signal)}.review-selection__status{color:var(--color-signal);font-size:.75rem}.review-selection[data-recommended=false]>span{color:var(--color-warning);background:oklch(29% .055 80)}.review-selection[data-recommended=false]>svg,.review-selection[data-recommended=false] .review-selection__status,.review-stage[data-recommended=false] .evidence-list li svg{color:var(--color-warning)}.evidence-list{padding-block:var(--space-6);border-block:1px solid var(--color-line)}.evidence-list h2{font-size:1.0625rem}.evidence-list ul{gap:var(--space-3);margin:0;padding:0;list-style:none;display:grid}.evidence-list li{align-items:flex-start;gap:var(--space-3);color:var(--color-muted);display:flex}.evidence-list li svg{color:var(--color-signal);flex:none;margin-block-start:.2rem}.further-reading{padding-block:var(--space-6)}.further-reading h2{font-size:1.0625rem}.further-reading ul{gap:var(--space-6);margin:0;padding:0;list-style:none;display:grid}.further-reading__header{justify-content:space-between;align-items:center;gap:var(--space-4);min-height:2.75rem;display:flex;position:relative}.further-reading__header>span{z-index:1;gap:var(--space-1);pointer-events:none;padding-inline-end:3.5rem;display:grid;position:relative}.further-reading__header>span .acronym-trigger{pointer-events:auto}.further-reading__header strong{color:var(--color-signal)}.further-reading__header small{color:var(--color-muted)}.further-reading__link{border-radius:var(--radius-sm);color:var(--color-signal);position:absolute;inset:0}.further-reading__link svg{top:50%;right:var(--space-3);position:absolute;translate:0 -50%}.further-reading__link:hover,.further-reading__link:focus-visible{background:var(--color-signal-soft)}.further-reading p{max-width:65ch;margin:var(--space-2) 0 0;color:var(--color-muted);font-size:.875rem}.further-reading .further-reading__connection{border-left:1px solid var(--color-line-strong);margin-block-start:var(--space-3);padding-inline-start:var(--space-3)}.further-reading__connection strong{color:var(--color-ink);margin-block-end:var(--space-1);display:block}@keyframes skeleton-shift{to{background-position:-200% 0}}@media (width>=48rem){h1{font-size:2.5rem}.auth-layout{grid-template-rows:1fr;grid-template-columns:minmax(0,1.15fr) minmax(24rem,.85fr)}.auth-intro,.auth-panel{padding:var(--space-12)}.auth-intro__copy h1{font-size:3.5rem}.profile-setup__content{grid-template-columns:minmax(0,.8fr) minmax(22rem,1fr);align-items:start}.briefing-content{padding:var(--space-12) var(--space-8) 8rem}.briefing-progress span{font-size:.75rem}.briefing-lede{gap:var(--space-6);grid-template-columns:3.5rem minmax(0,1fr)}.system-path{grid-template-columns:1fr auto 1.35fr auto 1fr auto 1.35fr;align-items:center}.stack-ledger>div{gap:var(--space-6);grid-template-columns:13rem minmax(0,1fr)}.system-boundary>div{gap:var(--space-6);grid-template-columns:15rem minmax(0,1fr)}.build-position{grid-template-columns:minmax(18rem,.9fr) minmax(0,1.1fr);align-items:center}.enforcement-panel>dl>div,.principle-list>div{gap:var(--space-6);grid-template-columns:minmax(12rem,.55fr) minmax(0,1.45fr)}.app-frame{border-inline:1px solid var(--color-line);grid-template-rows:auto 1fr;grid-template-columns:5.75rem 1fr;display:grid}.app-header{padding-inline:var(--space-6);grid-column:1/-1}.app-header__name{display:inline}.app-main{padding:var(--space-8);grid-column:2}.bottom-nav{border-top:0;border-right:1px solid var(--color-line);height:calc(100vh - 4.25rem);padding:var(--space-4) var(--space-2);grid-area:2/1;grid-template-rows:repeat(4,4.75rem);grid-template-columns:1fr;align-content:start;position:sticky;top:4.25rem}.bottom-nav__item{font-size:.75rem}.dashboard-view,.concepts-view,.leaderboard-view,.profile-view{max-width:58rem;margin-inline:auto}.level-navigator{gap:var(--space-6);grid-template-columns:3rem minmax(0,1fr) 3rem}.level-navigator__identity h2{font-size:1.5rem}.planned-level__summary{grid-template-columns:repeat(2,minmax(0,1fr))}.planned-level__summary>div:first-child{border-right:1px solid var(--color-line);padding-inline-end:var(--space-6)}.planned-level__summary>div:last-child{padding-inline-start:var(--space-6)}.concept-filters{flex-wrap:wrap;margin-inline:0;padding-inline:0;overflow:visible}.concept-explanation{gap:var(--space-6);grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-action-dock{padding-inline:var(--space-6);grid-template-columns:minmax(0,1fr) minmax(14rem,22rem);align-items:center}.lesson-reading,.decision-surface{padding-inline:var(--space-8)}}@media (width>=64rem){.workbench-layout{grid-template-columns:minmax(20rem,.8fr) minmax(34rem,1.2fr);min-height:calc(100dvh - 13rem)}.lesson-prompt,.decision-surface{padding:var(--space-8)}.lesson-prompt{border-right:1px solid var(--color-line);border-bottom:0}.answer-list{grid-template-columns:repeat(3,minmax(0,1fr))}.answer-option{grid-template-rows:auto 1fr auto;grid-template-columns:auto 1fr}.answer-option__status{grid-area:3/1}.answer-option[data-selected=true] .folder-tree{min-height:11rem;display:grid}.answer-option__copy{grid-row:1/4}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@media (width<=40rem){.acronym-tooltip,.acronym-tooltip[data-placement=above]{top:auto;right:var(--space-4);bottom:calc(var(--space-4) + env(safe-area-inset-bottom));left:var(--space-4);width:auto;translate:0}}
