*,:before,:after{--tw-border-spacing-x: 0;--tw-border-spacing-y: 0;--tw-translate-x: 0;--tw-translate-y: 0;--tw-rotate: 0;--tw-skew-x: 0;--tw-skew-y: 0;--tw-scale-x: 1;--tw-scale-y: 1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness: proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width: 0px;--tw-ring-offset-color: #fff;--tw-ring-color: rgb(59 130 246 / .5);--tw-ring-offset-shadow: 0 0 #0000;--tw-ring-shadow: 0 0 #0000;--tw-shadow: 0 0 #0000;--tw-shadow-colored: 0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }::backdrop{--tw-border-spacing-x: 0;--tw-border-spacing-y: 0;--tw-translate-x: 0;--tw-translate-y: 0;--tw-rotate: 0;--tw-skew-x: 0;--tw-skew-y: 0;--tw-scale-x: 1;--tw-scale-y: 1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness: proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width: 0px;--tw-ring-offset-color: #fff;--tw-ring-color: rgb(59 130 246 / .5);--tw-ring-offset-shadow: 0 0 #0000;--tw-ring-shadow: 0 0 #0000;--tw-shadow: 0 0 #0000;--tw-shadow-colored: 0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }*,:before,:after{box-sizing:border-box;border-width:0;border-style:solid;border-color:#e5e7eb}:before,:after{--tw-content: ""}html,:host{line-height:1.5;-webkit-text-size-adjust:100%;-moz-tab-size:4;-o-tab-size:4;tab-size:4;font-family:ui-sans-serif,system-ui,sans-serif,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol,"Noto Color Emoji";font-feature-settings:normal;font-variation-settings:normal;-webkit-tap-highlight-color:transparent}body{margin:0;line-height:inherit}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-feature-settings:normal;font-variation-settings:normal;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}button,input,optgroup,select,textarea{font-family:inherit;font-feature-settings:inherit;font-variation-settings:inherit;font-size:100%;font-weight:inherit;line-height:inherit;letter-spacing:inherit;color:inherit;margin:0;padding:0}button,select{text-transform:none}button,input:where([type=button]),input:where([type=reset]),input:where([type=submit]){-webkit-appearance:button;background-color:transparent;background-image:none}:-moz-focusring{outline:auto}:-moz-ui-invalid{box-shadow:none}progress{vertical-align:baseline}::-webkit-inner-spin-button,::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}summary{display:list-item}blockquote,dl,dd,h1,h2,h3,h4,h5,h6,hr,figure,p,pre{margin:0}fieldset{margin:0;padding:0}legend{padding:0}ol,ul,menu{list-style:none;margin:0;padding:0}dialog{padding:0}textarea{resize:vertical}input::-moz-placeholder,textarea::-moz-placeholder{opacity:1;color:#9ca3af}input::placeholder,textarea::placeholder{opacity:1;color:#9ca3af}button,[role=button]{cursor:pointer}:disabled{cursor:default}img,svg,video,canvas,audio,iframe,embed,object{display:block;vertical-align:middle}img,video{max-width:100%;height:auto}[hidden]:where(:not([hidden=until-found])){display:none}.\!container{width:100%!important}.container{width:100%}@media(min-width:640px){.\!container{max-width:640px!important}.container{max-width:640px}}@media(min-width:768px){.\!container{max-width:768px!important}.container{max-width:768px}}@media(min-width:1024px){.\!container{max-width:1024px!important}.container{max-width:1024px}}@media(min-width:1280px){.\!container{max-width:1280px!important}.container{max-width:1280px}}@media(min-width:1536px){.\!container{max-width:1536px!important}.container{max-width:1536px}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.static{position:static}.mt-1{margin-top:.25rem}.mt-2{margin-top:.5rem}.mt-3{margin-top:.75rem}.mt-4{margin-top:1rem}.mt-5{margin-top:1.25rem}.mt-auto{margin-top:auto}.\!block{display:block!important}.block{display:block}.flex{display:flex}.table{display:table}.grid{display:grid}.hidden{display:none}.min-h-screen{min-height:100vh}.w-fit{width:-moz-fit-content;width:fit-content}.min-w-0{min-width:0px}.max-w-3xl{max-width:48rem}.flex-col{flex-direction:column}.flex-wrap{flex-wrap:wrap}.items-start{align-items:flex-start}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-2{gap:.5rem}.gap-3{gap:.75rem}.gap-4{gap:1rem}.gap-5{gap:1.25rem}.gap-6{gap:1.5rem}.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.whitespace-pre-wrap{white-space:pre-wrap}.break-words{overflow-wrap:break-word}.rounded-lg{border-radius:.5rem}.rounded-xl{border-radius:.75rem}.border{border-width:1px}.border-b{border-bottom-width:1px}.border-emerald-200{--tw-border-opacity: 1;border-color:rgb(167 243 208 / var(--tw-border-opacity, 1))}.border-slate-100{--tw-border-opacity: 1;border-color:rgb(241 245 249 / var(--tw-border-opacity, 1))}.border-slate-200{--tw-border-opacity: 1;border-color:rgb(226 232 240 / var(--tw-border-opacity, 1))}.bg-emerald-50{--tw-bg-opacity: 1;background-color:rgb(236 253 245 / var(--tw-bg-opacity, 1))}.bg-slate-50{--tw-bg-opacity: 1;background-color:rgb(248 250 252 / var(--tw-bg-opacity, 1))}.bg-white{--tw-bg-opacity: 1;background-color:rgb(255 255 255 / var(--tw-bg-opacity, 1))}.bg-skivo-bg{background-image:linear-gradient(145deg,#eef2ff,#f6f0ff 45%,#f4f7ff)}.p-4{padding:1rem}.px-3{padding-left:.75rem;padding-right:.75rem}.py-2{padding-top:.5rem;padding-bottom:.5rem}.pb-4{padding-bottom:1rem}.pl-5{padding-left:1.25rem}.text-2xl{font-size:1.5rem;line-height:2rem}.text-3xl{font-size:1.875rem;line-height:2.25rem}.text-base{font-size:1rem;line-height:1.5rem}.text-lg{font-size:1.125rem;line-height:1.75rem}.text-sm{font-size:.875rem;line-height:1.25rem}.text-xl{font-size:1.25rem;line-height:1.75rem}.text-xs{font-size:.75rem;line-height:1rem}.font-black{font-weight:900}.font-bold{font-weight:700}.font-medium{font-weight:500}.font-semibold{font-weight:600}.uppercase{text-transform:uppercase}.tracking-\[0\.16em\]{letter-spacing:.16em}.tracking-\[0\.18em\]{letter-spacing:.18em}.tracking-\[0\.2em\]{letter-spacing:.2em}.tracking-tight{letter-spacing:-.025em}.text-emerald-900{--tw-text-opacity: 1;color:rgb(6 78 59 / var(--tw-text-opacity, 1))}.text-indigo-700{--tw-text-opacity: 1;color:rgb(67 56 202 / var(--tw-text-opacity, 1))}.text-skivo-primary{--tw-text-opacity: 1;color:rgb(70 50 208 / var(--tw-text-opacity, 1))}.text-slate-500{--tw-text-opacity: 1;color:rgb(100 116 139 / var(--tw-text-opacity, 1))}.text-slate-600{--tw-text-opacity: 1;color:rgb(71 85 105 / var(--tw-text-opacity, 1))}.text-slate-700{--tw-text-opacity: 1;color:rgb(51 65 85 / var(--tw-text-opacity, 1))}.text-slate-800{--tw-text-opacity: 1;color:rgb(30 41 59 / var(--tw-text-opacity, 1))}.text-slate-900{--tw-text-opacity: 1;color:rgb(15 23 42 / var(--tw-text-opacity, 1))}.text-slate-950{--tw-text-opacity: 1;color:rgb(2 6 23 / var(--tw-text-opacity, 1))}.filter{filter:var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)}:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#101828;color-scheme:light;--skivo-bg: #f7f8fb;--skivo-bg-subtle: #fbfcff;--skivo-surface: #ffffff;--skivo-surface-raised: #ffffff;--skivo-surface-soft: #f3f6fb;--skivo-surface-brand: #f2f4ff;--skivo-border: #e4e7ec;--skivo-border-strong: #d0d5dd;--skivo-text: #101828;--skivo-text-secondary: #344054;--skivo-muted: #667085;--skivo-muted-light: #98a2b3;--skivo-primary: #5146e5;--skivo-primary-hover: #4338ca;--skivo-primary-active: #3730a3;--skivo-primary-soft: #eef2ff;--skivo-blue: #2563eb;--skivo-info: #175cd3;--skivo-success: #067647;--skivo-warning: #b54708;--skivo-danger: #b42318;--skivo-focus: rgba(81, 70, 229, .28);--shadow-xs: 0 1px 2px rgba(16, 24, 40, .05);--shadow-sm: 0 8px 24px -18px rgba(16, 24, 40, .35);--shadow-md: 0 18px 44px -28px rgba(16, 24, 40, .42);--radius-xs: 6px;--radius-sm: 8px;--radius-md: 10px;--radius-lg: 12px;--radius-xl: 16px;--space-page: 32px;--space-section: 24px;--lesson-button-height: 36px;--lesson-button-mobile-height: 40px;--lesson-button-font-size: 13px;--lesson-button-padding: 7px 10px;--border: var(--skivo-border);--muted: var(--skivo-muted);--text: var(--skivo-text);--surface-muted: var(--skivo-surface-soft);--shadow-soft: var(--shadow-sm);--shadow-strong: var(--shadow-md)}*{box-sizing:border-box}html{min-height:100%;overflow-x:hidden;background:var(--skivo-bg)}body{margin:0;min-height:100vh;overflow-x:hidden;background:radial-gradient(circle at 8% -10%,rgba(81,70,229,.08),transparent 30rem),radial-gradient(circle at 90% -8%,rgba(37,99,235,.07),transparent 28rem),linear-gradient(180deg,#ffffff 0%,var(--skivo-bg) 32%,#f4f6fb 100%);color:var(--skivo-text);text-rendering:geometricPrecision}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit;max-width:100%}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.62}:focus-visible{outline:3px solid var(--skivo-focus);outline-offset:2px}.page{max-width:1280px;margin:0 auto;padding:var(--space-page);width:100%}.stack{display:grid;gap:var(--space-section)}.content-shell{min-width:0}.app-shell{min-height:100vh;display:grid;grid-template-columns:272px minmax(0,1fr)}.sidebar{position:sticky;top:0;height:100vh;padding:20px 16px;border-right:1px solid var(--skivo-border);background:#ffffffeb;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);display:flex;flex-direction:column;gap:18px}.brand{min-height:44px;display:flex;align-items:center;gap:10px;font-weight:780;letter-spacing:-.03em;color:var(--skivo-text)}.brand-mark{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--skivo-primary),var(--skivo-blue));box-shadow:var(--shadow-sm);font-weight:850}.nav-list{display:grid;gap:4px}.nav-link{min-height:44px;display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-lg);color:var(--skivo-text-secondary);font-weight:680;font-size:14px}.nav-link:hover{background:var(--skivo-surface-soft);color:var(--skivo-text)}.nav-link-active{background:var(--skivo-primary-soft);color:var(--skivo-primary-active)}.nav-icon-svg{flex:0 0 auto;color:currentColor}.sidebar-footer{margin-top:auto;display:grid;gap:10px}.user-card{border:1px solid var(--skivo-border);border-radius:var(--radius-xl);padding:12px;background:#fff;display:grid;gap:6px;box-shadow:var(--shadow-xs);min-width:0}.mobile-topbar{display:none;position:sticky;top:0;z-index:35;align-items:center;justify-content:space-between;gap:12px;min-height:64px;padding:10px 16px;background:#fffffff5;border-bottom:1px solid var(--skivo-border);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.mobile-topbar-actions{display:flex;align-items:center;gap:8px;min-width:0}.mobile-profile-link{min-height:40px;display:inline-flex;align-items:center;gap:8px;border:1px solid var(--skivo-border);border-radius:var(--radius-lg);padding:8px 10px;background:#fff;color:var(--skivo-text-secondary);font-weight:700;max-width:180px}.mobile-profile-link span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mobile-nav{display:none}.mobile-drawer-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;display:none;background:#0f172a5c}.mobile-drawer{width:min(88vw,360px);height:100%;display:flex;flex-direction:column;gap:18px;padding:16px;background:#fff;border-right:1px solid var(--skivo-border);box-shadow:var(--shadow-md)}.mobile-drawer-header{min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:12px}.card{background:#fffffffa;border:1px solid var(--skivo-border);box-shadow:var(--shadow-xs);border-radius:var(--radius-xl);padding:20px;min-width:0}.interactive-card{transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease}.interactive-card:hover{transform:translateY(-1px);border-color:#c7d7fe;box-shadow:var(--shadow-sm)}.page-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:8px}.page-header h1{margin:0;font-size:clamp(1.75rem,2.6vw,2.25rem);line-height:1.12;letter-spacing:-.045em;color:var(--skivo-text)}.page-header p,.section-header p,.muted{color:var(--skivo-muted)}.page-header p{max-width:760px;margin:8px 0 0;font-size:15px;line-height:1.55}.page-actions,.button-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.section-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:14px}.section-header>div{min-width:0}.section-header h2,.card h2,.card h3{margin-top:0;letter-spacing:-.025em;color:var(--skivo-text)}.section-header h2{margin-bottom:4px;font-size:18px;line-height:1.35}.section-header p{margin:0;line-height:1.5}.grid-2{display:grid;grid-template-columns:minmax(0,1.42fr) minmax(300px,.72fr);gap:18px;align-items:start}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.btn{border:1px solid var(--skivo-border-strong);background:#fff;color:var(--skivo-text-secondary);border-radius:var(--radius-lg);padding:10px 14px;font-weight:760;min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-align:center;line-height:1.15;box-shadow:var(--shadow-xs)}.btn:hover{border-color:#b7c2f8;background:#f8faff;color:var(--skivo-text)}.btn-primary{border-color:transparent;background:var(--skivo-primary);color:#fff;box-shadow:0 12px 24px -18px #5146e5cc}.btn-primary:hover{background:var(--skivo-primary-hover);color:#fff}.btn-ghost{background:transparent;border-color:transparent;box-shadow:none}.btn-danger{border-color:#fecdca;color:var(--skivo-danger);background:#fff7f7}.icon-button{width:44px;height:44px;border-radius:var(--radius-lg);border:1px solid var(--skivo-border);background:#fff;display:inline-grid;place-items:center;color:var(--skivo-text-secondary);box-shadow:var(--shadow-xs)}.icon-button:hover{background:var(--skivo-surface-soft);color:var(--skivo-text)}.field{width:100%;min-height:44px;border:1px solid var(--skivo-border-strong);border-radius:var(--radius-lg);padding:10px 12px;background:#fff;color:var(--skivo-text);box-shadow:var(--shadow-xs)}.field:focus{border-color:var(--skivo-primary);outline:3px solid var(--skivo-focus);outline-offset:0}.textarea{min-height:108px;resize:vertical}.form-grid{display:grid;gap:14px}.form-label{display:grid;gap:6px;font-weight:720;color:var(--skivo-text-secondary)}.form-label span{font-size:13px}.badge{display:inline-flex;width:-moz-fit-content;width:fit-content;align-items:center;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:780;line-height:1;border:1px solid transparent;background:var(--skivo-primary-soft);color:var(--skivo-primary-active);white-space:nowrap}.badge-neutral{background:#f8fafc;color:var(--skivo-text-secondary);border-color:var(--skivo-border)}.badge-accent{background:var(--skivo-primary-soft);color:var(--skivo-primary-active);border-color:#d9ddff}.badge-success{background:#ecfdf3;color:var(--skivo-success);border-color:#abefc6}.badge-warning{background:#fffaeb;color:var(--skivo-warning);border-color:#fedf89}.badge-danger{background:#fef3f2;color:var(--skivo-danger);border-color:#fecdca}.eyebrow{margin:0 0 6px;color:var(--skivo-primary-active);font-size:12px;font-weight:820;text-transform:uppercase;letter-spacing:.08em}.progress-track{height:8px;width:100%;overflow:hidden;border-radius:999px;background:#eaecf0}.progress-fill{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--skivo-primary),var(--skivo-blue))}.stat-card{display:grid;gap:6px}.stat-card p{margin:0;color:var(--skivo-muted);font-size:13px}.stat-card strong{font-size:28px;line-height:1.1;letter-spacing:-.04em}.stat-card span{color:var(--skivo-muted);font-size:13px}.alert{border-radius:var(--radius-xl);padding:14px 16px;border:1px solid var(--skivo-border);background:#f8faff;color:var(--skivo-text-secondary)}.alert-title{margin:0 0 6px;font-weight:820;color:var(--skivo-text)}.alert-warning{border-color:#fedf89;background:#fffaeb;color:#93370d}.alert-danger{border-color:#fecdca;background:#fef3f2;color:#912018}.alert-success{border-color:#abefc6;background:#ecfdf3;color:#085d3a}.empty-state{border:1px dashed #c7d7fe;border-radius:var(--radius-xl);padding:32px 24px;display:grid;gap:12px;place-items:center;text-align:center;background:linear-gradient(180deg,#fff,#f8faff)}.empty-icon{width:44px;height:44px;border-radius:var(--radius-lg);display:grid;place-items:center;background:var(--skivo-primary-soft);color:var(--skivo-primary);font-size:20px}.loading-state{display:inline-flex;align-items:center;gap:10px;color:var(--skivo-muted)}.loading-state span{width:13px;height:13px;border-radius:999px;border:2px solid #c7d7fe;border-top-color:var(--skivo-primary);animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.hero-card,.dashboard-hero-card{position:relative;overflow:hidden;background:linear-gradient(135deg,#fff,#f7f8ff)}.hero-card:after,.dashboard-hero-card:after{content:"";position:absolute;inset:auto -10% -48% 55%;height:14rem;background:radial-gradient(circle,rgba(81,70,229,.11),transparent 68%);pointer-events:none}.hero-content,.dashboard-hero-card>*{position:relative;z-index:1}.subscription-summary{display:grid;gap:8px;margin-bottom:14px}.settings-tabs{display:inline-flex;width:-moz-fit-content;width:fit-content;gap:4px;padding:4px;border:1px solid var(--skivo-border);border-radius:var(--radius-lg);background:var(--skivo-surface)}.settings-tabs a{min-height:40px;display:inline-flex;align-items:center;border-radius:var(--radius-md);padding:0 16px;color:var(--skivo-text-secondary);font-size:.875rem;font-weight:700}.settings-tabs a.active{color:var(--skivo-text);background:var(--skivo-primary-soft);box-shadow:var(--shadow-xs)}.quick-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.quick-link{padding:14px;border:1px solid var(--skivo-border);border-radius:var(--radius-xl);background:#fff;font-weight:740;box-shadow:var(--shadow-xs)}.course-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.course-grid.compact{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.compact-learning-cards{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}.course-card{display:grid;gap:14px;min-height:178px;align-content:start}.course-card-main{display:grid;gap:6px}.course-card h2{margin:4px 0;font-size:18px;line-height:1.3}.course-card p{margin:0;color:var(--skivo-muted);line-height:1.5}.card-arrow{color:var(--skivo-primary);font-weight:800}.course-card-action{margin-top:auto;display:inline-flex;align-items:center;gap:6px;color:var(--skivo-primary-active);font-weight:760}.lesson-inline-meta{display:inline-flex;gap:8px;align-items:center;color:var(--skivo-muted-light);font-size:13px}.lesson-list{display:grid;gap:10px}.lesson-card{display:grid;grid-template-columns:88px minmax(0,1fr);gap:14px;align-items:start}.lesson-day{min-height:64px;border-radius:var(--radius-xl);display:grid;place-items:center;background:var(--skivo-primary-soft);color:var(--skivo-primary-active);font-weight:820;text-align:center}.lesson-title-row{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.lesson-body{display:grid;gap:8px;min-width:0}.lesson-body h3{margin:0;font-size:16px;line-height:1.35}.lesson-body p{margin:0;color:var(--skivo-muted);line-height:1.5}.lesson-locked{background:#fffdf7}.lesson-focus{display:grid;gap:4px;padding:14px;border-radius:var(--radius-xl);background:#fff;border:1px solid var(--skivo-border)}.card-action-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.onboarding-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.onboarding-steps>div{border:1px solid var(--skivo-border);border-radius:var(--radius-xl);padding:16px;background:#fff}.onboarding-steps span{width:28px;height:28px;display:inline-grid;place-items:center;border-radius:999px;background:var(--skivo-primary-soft);color:var(--skivo-primary-active);font-weight:820;margin-bottom:10px}.onboarding-steps strong{display:block;margin-bottom:4px}.onboarding-steps p{margin:0;color:var(--skivo-muted);line-height:1.5}.catalog-toolbar{display:grid;gap:14px}.search-field{position:relative;display:flex;align-items:center;gap:10px}.search-field svg{position:absolute;left:12px;color:var(--skivo-muted)}.search-field .field{padding-left:40px}.filter-row{display:flex;flex-wrap:wrap;gap:8px}.course-workspace-grid{display:grid;grid-template-columns:minmax(270px,320px) minmax(0,1fr);gap:20px;align-items:start}.course-program{position:sticky;top:24px;max-height:calc(100vh - 48px);overflow:auto;border:1px solid var(--skivo-border);border-radius:var(--radius-xl);background:#fffffffa;padding:16px;box-shadow:var(--shadow-xs)}.course-workspace-content{min-width:0}.lesson-row{width:100%;border:1px solid var(--skivo-border);background:#fff;border-radius:var(--radius-xl);padding:12px;text-align:left;display:grid;grid-template-columns:72px minmax(0,1fr);gap:12px}.lesson-row:hover{border-color:#c7d7fe;background:#f8faff}.lesson-row.active{border-color:#a4bcfd;box-shadow:inset 3px 0 0 var(--skivo-primary)}.mobile-program-toggle{display:none;margin-bottom:14px}.lesson-detail-header{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}.lesson-detail-header h1{margin:0 0 8px;font-size:clamp(1.65rem,3vw,2.15rem);line-height:1.15;letter-spacing:-.045em}.lesson-detail-header p{line-height:1.55}.lesson-action-panel{display:flex;gap:10px;flex-wrap:wrap;align-items:center;padding-top:16px;margin-top:16px;border-top:1px solid var(--skivo-border)}.lesson-content{max-width:860px}.lesson-article{display:grid;gap:26px;color:var(--skivo-text-secondary);line-height:1.7}.lesson-article h2{margin:0 0 10px;color:var(--skivo-text);font-size:22px;line-height:1.25;letter-spacing:-.035em}.lesson-article h3{margin:0 0 8px;color:var(--skivo-text);font-size:17px;line-height:1.35}.lesson-article p{margin:0 0 10px}.lesson-article ul{margin:0;padding-left:1.25rem}.lesson-article li+li{margin-top:6px}.lesson-summary-block{border:1px solid #d9ddff;border-radius:var(--radius-xl);background:var(--skivo-surface-brand);padding:20px;color:var(--skivo-text-secondary)}.lesson-article-section{padding-top:24px;border-top:1px solid var(--skivo-border)}.lesson-article-section:first-child{padding-top:0;border-top:0}.lesson-single-document{max-width:860px}.course-summary-card.course-summary-compact{padding:16px}.lesson-section{padding:12px 0;border-top:1px solid var(--skivo-border)}.lesson-section:first-of-type{border-top:0;padding-top:0}.lesson-callout-grid{display:grid;gap:12px}.lesson-callout{border:1px solid var(--skivo-border);border-radius:var(--radius-xl);padding:16px;background:#fff;box-shadow:var(--shadow-xs)}.homework-callout{background:linear-gradient(135deg,#fff,#f8faff);border-color:#d9ddff}.definition-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}.definition-item{border:1px solid var(--skivo-border);border-radius:var(--radius-lg);padding:14px;background:#fff}.ai-drawer{position:sticky;top:24px;max-height:calc(100vh - 48px);width:min(460px,100%);display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;border:1px solid var(--skivo-border);border-radius:var(--radius-xl);background:#fffffffa;box-shadow:var(--shadow-md);overflow:hidden}.ai-drawer-header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:16px;border-bottom:1px solid var(--skivo-border)}.mode-buttons{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0 20px}.mode-buttons.compact-modes{padding:14px 16px;border-bottom:1px solid var(--skivo-border)}.mode-button{border:1px solid var(--skivo-border);border-radius:var(--radius-lg);padding:9px 10px;background:#fff;color:var(--skivo-text-secondary);text-align:left;display:grid;gap:3px;min-height:44px}.mode-button.active{border-color:#a4bcfd;background:var(--skivo-primary-soft);color:var(--skivo-primary-active)}.mode-button small{color:var(--skivo-muted);font-size:12px;line-height:1.3}.tutor-card{display:grid;gap:16px;padding:0;overflow:hidden}.tutor-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:20px 20px 0}.tutor-header h1{margin:0;font-size:clamp(1.4rem,3vw,2rem);line-height:1.14}.tutor-context{display:grid;gap:8px;border:1px solid var(--skivo-border);border-radius:var(--radius-xl);background:#f8faff;padding:14px;margin:0 20px;font-size:14px}.chat-list{display:grid;align-content:start;gap:12px;padding:0 20px;overflow:auto}.embedded-chat{padding:16px}.chat-hints{display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));padding:0 16px 12px;border-bottom:1px solid var(--skivo-border)}.chat-hint{border:1px solid var(--skivo-border);border-radius:var(--radius-lg);background:#fff;padding:8px 12px;text-align:left;color:var(--skivo-text-secondary);font-size:13px;font-weight:640}.chat-hint:hover{border-color:#bfd3ff;background:var(--skivo-primary-soft);color:var(--skivo-primary-active)}.chat-message{max-width:82%;border-radius:var(--radius-xl);padding:12px 14px;font-size:14px;line-height:1.55;overflow-wrap:anywhere}.chat-message p{margin:4px 0}.chat-user{justify-self:end;background:var(--skivo-primary);color:#fff}.chat-assistant{justify-self:start;background:#fff;border:1px solid var(--skivo-border);color:var(--skivo-text-secondary)}.ai-response-badges{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0 8px}.tutor-composer{position:sticky;bottom:0;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;padding:16px 20px;background:#fffffffa;border-top:1px solid var(--skivo-border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.embedded-composer{padding:14px 16px}.tutor-composer textarea{min-height:58px;max-height:180px}.paywall-card{display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;align-items:start;background:linear-gradient(135deg,#fff,#fffbeb)}.paywall-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:var(--radius-xl);background:#fef3c7}.completion-card{margin:0 20px;display:flex;justify-content:space-between;gap:16px;align-items:center;background:#ecfdf3;border-color:#abefc6}.homework-card{display:grid;gap:12px}.homework-row{padding:0;overflow:hidden}.homework-main{display:grid;grid-template-columns:minmax(220px,1.1fr) minmax(150px,.55fr) minmax(220px,1fr) auto;gap:16px;align-items:center;padding:16px}.homework-title-cell,.homework-status-cell,.homework-feedback-cell,.homework-action-cell{min-width:0}.homework-title-cell h3{margin:0 0 4px;font-size:16px;line-height:1.35}.homework-status-cell{display:grid;gap:8px;color:var(--skivo-muted);font-size:13px}.homework-feedback-cell p{margin:0;color:var(--skivo-text-secondary);line-height:1.5}.tariff-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.tariff-card{position:relative;display:grid;gap:12px;border:1px solid var(--skivo-border);border-radius:var(--radius-xl);padding:20px;min-width:0;background:#fff;box-shadow:var(--shadow-xs)}.tariff-card.featured{border-color:#a4bcfd;box-shadow:var(--shadow-sm)}.price{font-size:clamp(1.8rem,4vw,2.35rem);font-weight:850;color:var(--skivo-primary-active);letter-spacing:-.055em}.payment-card{max-width:680px;margin:0 auto;text-align:center;display:grid;gap:16px}.auth-page{min-height:100vh;display:grid;grid-template-columns:minmax(0,1fr) minmax(420px,480px);align-items:stretch}.auth-brand-panel{padding:32px;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(135deg,#f4f6ff,#fbfcff);border-right:1px solid var(--skivo-border)}.auth-copy{max-width:560px;align-self:center;display:grid;gap:16px}.auth-copy h1,.auth-copy h2{font-size:clamp(2rem,4.5vw,3.4rem);line-height:1.04;letter-spacing:-.065em;margin:0;font-weight:800;color:var(--skivo-text)}.auth-loading-card{max-width:420px;margin:15vh auto 0}.success-icon{color:var(--skivo-success)}.danger-icon{color:var(--skivo-danger)}.auth-steps{display:flex;flex-wrap:wrap;gap:8px}.auth-steps span{border:1px solid #d9ddff;border-radius:999px;background:#ffffffc7;color:var(--skivo-primary-active);padding:7px 10px;font-size:13px;font-weight:780}.auth-card-wrap{display:grid;place-items:center;padding:32px}.auth-card{width:min(100%,430px)}.auth-page-centered{grid-template-columns:minmax(0,1fr);align-items:center;justify-items:center;padding:clamp(24px,6vw,56px) 16px}.auth-page-centered .auth-card-wrap{width:min(100%,520px);padding:0;place-items:stretch}.auth-page-centered .auth-card{width:100%;max-width:480px;margin:0 auto}.auth-card-brand{width:-moz-max-content;width:max-content;margin-bottom:20px}@media(max-width:1100px){.app-shell{grid-template-columns:1fr}.sidebar{display:none}.mobile-topbar{display:flex}.mobile-drawer-backdrop{display:block}.content-shell{padding-bottom:0}.page{padding:24px}.grid-2{grid-template-columns:1fr}.grid-3,.tariff-grid{grid-template-columns:1fr 1fr}.auth-page{grid-template-columns:1fr}.auth-brand-panel{display:none}.course-workspace-grid{grid-template-columns:1fr}.course-program{position:fixed;inset:0 auto 0 0;z-index:45;width:min(88vw,360px);max-height:none;border-radius:0;transform:translate(-105%);transition:transform .18s ease;box-shadow:var(--shadow-md)}.course-program.open{transform:translate(0)}.mobile-program-toggle{display:block}.ai-drawer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:55;width:100%;max-height:none;border-radius:0}}@media(max-width:640px){:root{--space-page: 16px;--space-section: 16px}.page{padding:16px}.page-header{display:grid;align-items:start;gap:14px}.page-header h1{font-size:28px}.page-actions,.button-row{display:grid;grid-template-columns:1fr;width:100%}.btn{width:100%}.grid-3,.course-grid,.quick-links,.tariff-grid,.onboarding-steps{grid-template-columns:1fr}.section-header{display:grid}.lesson-card,.paywall-card,.lesson-row{grid-template-columns:1fr}.lesson-day{min-height:48px;place-items:center start;padding:0 12px}.lesson-title-row,.lesson-detail-header{display:grid}.mode-buttons{display:grid;grid-template-columns:1fr;padding:0 16px}.chat-message{max-width:94%}.tutor-composer{grid-template-columns:1fr;padding-bottom:calc(16px + env(safe-area-inset-bottom))}.completion-card{display:grid;margin:0 16px}.homework-main{grid-template-columns:1fr;align-items:start}.homework-action-cell{justify-self:stretch}.auth-card-wrap{padding:16px}.mobile-profile-link span{display:none}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}.admin-shell{min-height:100vh;display:grid;grid-template-columns:280px minmax(0,1fr);background:radial-gradient(circle at 15% 10%,rgba(79,70,229,.12),transparent 28rem),linear-gradient(135deg,#f8fafc,#eef2ff)}.admin-sidebar{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:1.5rem;border-right:1px solid rgba(148,163,184,.22);background:#ffffffe0;padding:1.25rem;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.admin-brand,.admin-topbar-brand{display:flex;align-items:center;gap:.75rem;text-decoration:none}.admin-brand-mark{display:inline-flex;width:2.5rem;height:2.5rem;align-items:center;justify-content:center;border-radius:.9rem;background:linear-gradient(135deg,#4f46e5,#2563eb);color:#fff;font-weight:800;box-shadow:0 16px 36px #2563eb3d}.admin-sidebar-nav{display:grid;gap:.35rem}.admin-sidebar-link,.admin-mobile-nav-link,.admin-return-link{min-height:44px;display:inline-flex;align-items:center;border-radius:.9rem;color:#334155;font-weight:700;text-decoration:none}.admin-sidebar-link{padding:.75rem .9rem}.admin-sidebar-link.active,.admin-mobile-nav-link.active{background:#eef2ff;color:#3730a3}.admin-return-link{border:1px solid #dbe3f0;background:#fff;justify-content:center;padding:.65rem .85rem}.admin-return-link.compact{min-height:40px;padding-inline:.75rem;font-size:.875rem}.admin-user-card{display:grid;gap:.5rem;border:1px solid #dbe3f0;border-radius:1rem;background:#fff;padding:.9rem}.admin-main-wrap{min-width:0}.admin-topbar,.admin-mobile-nav{display:none}.admin-main{width:min(1180px,100%);margin-inline:auto;padding:2rem}.admin-section-card,.admin-metric-card{border-color:#94a3b83d}.admin-metric-card{min-height:9rem}.admin-filter-bar{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.75rem;align-items:center;margin-bottom:1rem}.admin-select{min-height:44px;border:1px solid #cbd5e1;border-radius:.9rem;background:#fff;padding:0 .9rem;font-weight:700;color:#334155}.admin-card-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:1rem;align-items:center}.admin-field-label{margin-bottom:.35rem;color:#64748b;font-size:.8rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.admin-quick-link{display:grid;gap:.35rem;min-height:5.5rem;border:1px solid #dbe3f0;border-radius:1rem;background:#f8fafc;padding:1rem;text-decoration:none;transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease}.admin-quick-link:hover{transform:translateY(-1px);border-color:#a5b4fc;box-shadow:0 18px 36px #4f46e51f}@media(max-width:1023px){.admin-shell{display:block;padding-bottom:1.5rem}.admin-sidebar{display:none}.admin-topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:1rem;border-bottom:1px solid rgba(148,163,184,.22);background:#ffffffeb;padding:.75rem 1rem;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.admin-mobile-nav{display:flex;gap:.5rem;overflow-x:auto;border-bottom:1px solid rgba(148,163,184,.18);background:#ffffffdb;padding:.65rem 1rem}.admin-mobile-nav-link{flex:0 0 auto;padding:.6rem .8rem;white-space:nowrap}.admin-main{padding:1rem}.admin-filter-bar,.admin-card-row{grid-template-columns:1fr}}@media(max-width:420px){.admin-topbar,.admin-main{padding-inline:.75rem}.admin-brand-mark{width:2.25rem;height:2.25rem}}.nav-icon-svg{flex:0 0 auto}.mobile-topbar-actions{display:flex;align-items:center;gap:.5rem;min-width:0}.mobile-profile-link{display:inline-flex;align-items:center;gap:.35rem;min-width:0;max-width:44vw;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;color:var(--text);font-size:.85rem;font-weight:700}.user-card .muted{max-width:11rem}.dashboard-grid{align-items:stretch}.current-lesson-card{display:flex;flex-direction:column;gap:1rem}.dashboard-hero-card{background:linear-gradient(135deg,#fff,#f7f8ff)}.card-action-row{margin-top:auto;display:grid;gap:.55rem;align-items:start}.onboarding-card{background:linear-gradient(135deg,#fff,#f8fbff)}.onboarding-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.85rem}.onboarding-steps div{display:grid;gap:.35rem;border:1px solid var(--skivo-border);border-radius:1rem;background:#fff;padding:1rem}.onboarding-steps span{width:2rem;height:2rem;display:grid;place-items:center;border-radius:.75rem;background:var(--skivo-primary-soft);color:var(--skivo-primary-dark);font-weight:900}.onboarding-steps strong{font-size:1rem}.onboarding-steps p{margin:0;color:var(--skivo-muted);line-height:1.45}.lesson-focus{display:grid;gap:.2rem;padding:1rem;border:1px solid var(--border);border-radius:1rem;background:var(--surface-muted)}.lesson-focus span{color:var(--muted);font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em}.course-grid.compact{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.catalog-toolbar{display:grid;gap:1rem}.search-field{display:flex;align-items:center;gap:.6rem;padding:.15rem .75rem;border:1px solid var(--border);border-radius:1rem;background:#fff}.search-field .field{border:0;box-shadow:none;padding-left:0}.filter-row{display:flex;flex-wrap:wrap;gap:.5rem}.course-summary-card{display:grid;gap:1rem}.compact-lessons{display:grid;gap:.75rem}.lesson-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:1rem;align-items:center;text-decoration:none;color:inherit;padding:1rem}.lesson-row:hover{transform:translateY(-1px);border-color:#4f46e559}.lesson-action{width:2.5rem;height:2.5rem;border-radius:.9rem;display:grid;place-items:center;color:var(--skivo-primary);background:#4f46e514}.lesson-locked .lesson-action{color:#92400e;background:#fffbeb}.tutor-workspace{display:grid;grid-template-columns:minmax(220px,280px) minmax(0,1fr);gap:1rem;align-items:start}.tutor-sidebar{position:sticky;top:1rem;display:grid;gap:.85rem;max-height:calc(100vh - 2rem);overflow:auto;padding:1rem;border:1px solid var(--border);border-radius:1.25rem;background:#ffffffe6;box-shadow:var(--shadow-soft)}.compact-header{margin-bottom:-.35rem}.compact-header h2{font-size:.95rem}.compact-header p{font-size:.8rem}.tutor-course-list,.tutor-lesson-list{display:grid;gap:.45rem}.tutor-course-link,.tutor-lesson-button{width:100%;display:grid;gap:.2rem;padding:.75rem;border:1px solid var(--border);border-radius:.9rem;background:#fff;color:var(--text);text-decoration:none;text-align:left}.tutor-course-link.active,.tutor-lesson-button.active{border-color:#4f46e573;background:#4f46e512}.tutor-course-link small,.tutor-lesson-button span{color:var(--muted);font-size:.76rem}.tutor-lesson-button strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tutor-main-card{min-width:0}.mode-buttons{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.6rem;padding:0 1.25rem 1rem}.mode-button{min-height:4rem;border:1px solid var(--border);border-radius:1rem;background:#fff;padding:.65rem;text-align:left;cursor:pointer}.mode-button span{display:block;font-weight:800}.mode-button small{display:block;margin-top:.2rem;color:var(--muted);font-size:.74rem;line-height:1.25}.mode-button.active{border-color:#4f46e58c;background:linear-gradient(135deg,#4f46e51c,#2563eb14);color:var(--skivo-primary)}.quick-continue-row{display:flex;align-items:center;gap:.75rem;padding:0 1.25rem 1rem;flex-wrap:wrap}.course-timeline{scroll-margin-bottom:8rem}.timeline-section{display:grid;gap:.75rem;scroll-margin-top:1rem}.timeline-divider{align-self:center;justify-self:center;padding:.35rem .75rem;border-radius:999px;background:var(--surface-muted);color:var(--muted);font-size:.78rem;font-weight:800}.timeline-section.active .timeline-divider{background:#4f46e51a;color:var(--skivo-primary)}.chat-meta{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;margin-bottom:.35rem}.message-content{display:grid;gap:.4rem;line-height:1.65}.chat-error{border-color:#fecaca}.tutor-composer{position:sticky;bottom:0;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.75rem;align-items:end;padding:1rem 1.25rem calc(1rem + env(safe-area-inset-bottom));border-top:1px solid var(--border);background:#fffffff5;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.tutor-composer .textarea{max-height:11rem;resize:vertical}.homework-card{display:grid;gap:.9rem}.homework-status-row{display:flex;flex-wrap:wrap;gap:.5rem;color:var(--skivo-muted);font-size:.9rem}.homework-status-row span{border:1px solid var(--skivo-border);border-radius:999px;background:#f8faff;padding:.35rem .65rem}.tariff-period{margin:-.35rem 0 .35rem;color:var(--skivo-primary-dark);font-weight:850}.empty-icon{width:2.75rem;height:2.75rem;border-radius:1rem;display:grid;place-items:center;font-weight:900;color:var(--skivo-primary);background:#4f46e51a}.mb-4{margin-bottom:1rem}@media(max-width:900px){.tutor-workspace{grid-template-columns:1fr}.tutor-sidebar{position:static;max-height:none}.mode-buttons{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:640px){.lesson-row{grid-template-columns:1fr auto}.lesson-day{grid-column:1 / -1}.mode-buttons{grid-template-columns:1fr;padding-inline:1rem}.quick-continue-row{padding-inline:1rem}.tutor-composer{margin-bottom:4.25rem;padding-inline:1rem}.mobile-nav{padding-bottom:env(safe-area-inset-bottom)}.mobile-nav-inner .nav-link span{font-size:.72rem}.tutor-sidebar{padding:.75rem}}.course-workspace-grid{display:grid;grid-template-columns:minmax(240px,320px) minmax(0,1fr);gap:1rem;align-items:start}.course-program{position:sticky;top:1rem;display:grid;gap:1rem;max-height:calc(100vh - 2rem);overflow:auto;padding:1rem;border:1px solid var(--border);border-radius:1.25rem;background:#ffffffeb;box-shadow:var(--shadow-soft)}.course-workspace-content{min-width:0;display:grid;gap:1rem}.lesson-button{width:100%;grid-template-columns:minmax(4.5rem,auto) minmax(0,1fr);border:1px solid var(--border);border-radius:1rem;background:#fff;cursor:pointer;text-align:left}.lesson-button.active{border-color:#4f46e58c;background:linear-gradient(135deg,#4f46e51a,#2563eb0f)}.lesson-button.lesson-locked{background:#fffbeb}.lesson-body{min-width:0;display:grid;gap:.35rem}.lesson-title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:.6rem;min-width:0}.lesson-title-row h3{margin:0;font-size:.95rem;overflow-wrap:anywhere}.mobile-program-toggle{display:none}.lesson-detail-header{display:flex;justify-content:space-between;gap:1rem;align-items:flex-start}.lesson-hero-card{display:grid;gap:1rem}.lesson-action-panel{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;border-top:1px solid var(--skivo-border);padding-top:1rem}.lesson-content{min-width:0}.lesson-content h2{margin:0 0 .75rem;font-size:1.08rem}.lesson-content h3{margin:.35rem 0;font-size:.98rem}.lesson-content p,.lesson-content li{line-height:1.65;overflow-wrap:anywhere}.lesson-content ul{margin:0;padding-left:1.25rem;display:grid;gap:.4rem}.definition-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:.75rem}.definition-item{padding:.85rem;border:1px solid var(--border);border-radius:.9rem;background:var(--surface-muted)}.lesson-section+.lesson-section{margin-top:.9rem;padding-top:.9rem;border-top:1px solid var(--border)}.ai-drawer{position:sticky;top:1rem;display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;gap:.75rem;max-height:calc(100vh - 2rem);min-width:0;border:1px solid var(--border);border-radius:1.25rem;background:#fffffffa;box-shadow:var(--shadow-strong);overflow:hidden}.ai-drawer-header{display:flex;justify-content:space-between;align-items:flex-start;gap:.75rem;padding:1rem 1rem 0}.ai-drawer-header h2{margin:0;font-size:1rem}.compact-modes{padding:0 1rem;grid-template-columns:repeat(2,minmax(0,1fr))}.embedded-chat{overflow:auto;padding:0 1rem}.embedded-composer{position:static;padding:1rem}.standalone-tutor-grid{display:grid;grid-template-columns:minmax(240px,320px) minmax(0,1fr);gap:1rem;align-items:start}.standalone-tutor-sidebar{position:sticky;top:1rem}.tutor-selector-list{display:grid;gap:.5rem}.selector-row{width:100%;display:grid;gap:.25rem;padding:.75rem;border:1px solid var(--border);border-radius:.9rem;background:#fff;color:var(--text);text-align:left;cursor:pointer}.selector-row.active{border-color:#4f46e58c;background:#4f46e514}.selector-row small{color:var(--muted);line-height:1.3;overflow-wrap:anywhere}.standalone-tutor-main{min-width:0}.standalone-chat-list{padding:0}.chat-message-meta{display:flex;align-items:center;flex-wrap:wrap;gap:.5rem;margin-bottom:.4rem;color:var(--muted);font-size:.82rem}.standalone-composer{border:1px solid var(--border);border-radius:1.1rem;box-shadow:var(--shadow-soft)}@media(max-width:1100px){.course-workspace-grid,.standalone-tutor-grid{grid-template-columns:1fr}.course-program,.standalone-tutor-sidebar{position:static;max-height:none}.ai-drawer{position:fixed;top:1rem;right:1rem;bottom:1rem;left:1rem;z-index:60;max-height:none}}@media(max-width:640px){.course-program{display:none}.course-program.open{display:grid;position:fixed;inset:4.5rem .75rem calc(5rem + env(safe-area-inset-bottom));z-index:50;max-height:none}.mobile-program-toggle{display:block}.lesson-detail-header,.lesson-title-row{display:grid}.definition-grid{grid-template-columns:1fr}.ai-drawer{inset:.5rem .5rem calc(4.75rem + env(safe-area-inset-bottom));border-radius:1rem}.compact-modes{grid-template-columns:1fr}.standalone-composer{margin-bottom:4.5rem}.onboarding-steps{grid-template-columns:1fr}.lesson-action-panel{display:grid;grid-template-columns:1fr}}.btn-compact{min-height:var(--lesson-button-height);padding:var(--lesson-button-padding);border-radius:var(--radius-md);font-size:var(--lesson-button-font-size);box-shadow:none}.lesson-generating-actions{align-items:stretch}.lesson-generating-actions .btn{min-height:var(--lesson-button-height);white-space:nowrap}.compact-catalog-toolbar{gap:10px;padding:14px}.search-field,.mobile-category-select{width:100%;min-width:0}.search-field .field{min-width:0;padding-left:42px}.search-field svg{left:14px;pointer-events:none}.desktop-filter-row{align-items:center}.desktop-filter-row .filter-chip{min-height:34px;padding:7px 10px;border-radius:999px;font-size:12px;box-shadow:none;white-space:nowrap}.mobile-category-select{display:none;gap:6px;font-size:13px;font-weight:760;color:var(--skivo-text-secondary)}.mobile-category-select select{width:100%;min-width:0;min-height:40px;border:1px solid var(--skivo-border-strong);border-radius:var(--radius-lg);background:#fff;padding:0 12px;color:var(--skivo-text)}.learning-steps-details{border-top:1px solid var(--skivo-border);padding-top:8px;color:var(--skivo-text-secondary)}.learning-steps-details summary{cursor:pointer;font-weight:780;font-size:13px;color:var(--skivo-primary-active)}.learning-steps-compact{display:flex;flex-wrap:wrap;gap:8px;padding-top:8px}.learning-steps-compact span{border:1px solid var(--skivo-border);border-radius:999px;background:#fff;padding:6px 9px;font-size:12px;color:var(--skivo-muted)}.course-card{min-height:150px;gap:10px;padding:16px}.course-card h2{font-size:16px}.course-card p{font-size:13px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.course-card-action{font-size:13px;align-self:end}.course-summary-card.course-summary-compact{padding:14px}.course-summary-card-header h2{font-size:18px}.course-summary-card-header .badge{padding:4px 8px;font-size:11px}.course-program{padding:12px}.course-program .section-header{margin-bottom:8px}.course-program .section-header h2{font-size:16px}.lesson-row{grid-template-columns:58px minmax(0,1fr);gap:10px;padding:9px;border-radius:var(--radius-lg)}.lesson-row .lesson-day{min-height:42px;border-radius:var(--radius-md);font-size:12px}.lesson-body{gap:5px}.lesson-body h3{font-size:14px;line-height:1.25}.lesson-body p{font-size:12px;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.lesson-title-row .badge{font-size:10px;padding:4px 7px}.lesson-hero-card{padding:14px;background:#fff}.lesson-detail-header h1{font-size:clamp(1.35rem,2.2vw,1.85rem)}.lesson-action-panel{gap:8px;padding-top:10px;margin-top:10px}.lesson-single-document.lesson-article{max-width:860px;margin:0 auto;padding:clamp(22px,4vw,42px);border:1px solid var(--skivo-border);border-radius:var(--radius-xl);background:#fff;box-shadow:var(--shadow-xs);color:#243044;line-height:1.76;font-size:16px}.lesson-article-section{padding-top:26px}.lesson-article h1{margin:0;color:var(--skivo-text);font-size:clamp(1.65rem,3vw,2.25rem);line-height:1.15;letter-spacing:-.045em}.lesson-article h2{font-size:20px;margin-bottom:12px}.lesson-article p{margin:0 0 12px}.lesson-callout{background:#f8fafc}.ai-drawer{right:24px;margin-left:auto}.chat-user{background:#1d4ed8;color:#fff}.chat-user .chat-message-meta,.chat-user strong,.chat-user p{color:#fff}.chat-assistant{background:#fff;color:#1f2937}.chat-message-meta{display:grid;gap:2px;margin-bottom:6px;font-size:12px;opacity:.95}.compact-ai-grid{grid-template-columns:minmax(240px,310px) minmax(0,1fr)}.standalone-tutor-sidebar .card{padding:14px}.tutor-selector-list{display:grid;gap:6px;max-height:58vh;overflow:auto}.selector-row{width:100%;border:1px solid var(--skivo-border);border-radius:var(--radius-md);background:#fff;padding:9px 10px;display:grid;gap:3px;text-align:left;color:var(--skivo-text-secondary)}.selector-row span{font-weight:780;font-size:13px;color:var(--skivo-text)}.selector-row small{color:var(--skivo-muted);line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.selector-row.active{border-color:#a4bcfd;background:var(--skivo-primary-soft)}.compact-chat-hints{display:flex;flex-wrap:wrap;padding:0;border:0}.compact-chat-hints .chat-hint{width:auto;padding:7px 10px;border-radius:999px}.tutor-mobile-toggle{display:none}.compact-context-card{padding:14px}@media(max-width:1100px){.compact-ai-grid{grid-template-columns:1fr}.tutor-mobile-toggle{display:block}.standalone-tutor-sidebar{position:fixed;inset:0 auto 0 0;z-index:52;width:min(88vw,360px);background:#fff;padding:16px;overflow:auto;transform:translate(-105%);transition:transform .18s ease;border-right:1px solid var(--skivo-border);box-shadow:var(--shadow-md)}.standalone-tutor-sidebar.open{transform:translate(0)}}@media(max-width:640px){.desktop-filter-row{display:none}.mobile-category-select{display:grid}.button-row{grid-template-columns:repeat(auto-fit,minmax(120px,1fr))}.btn{min-height:40px;padding:8px 11px}.btn-compact{width:auto;min-height:var(--lesson-button-mobile-height);padding:var(--lesson-button-padding)}.lesson-generating-actions{grid-template-columns:minmax(0,1fr)}.lesson-generating-actions .btn{width:100%;min-height:var(--lesson-button-mobile-height)}.lesson-row{grid-template-columns:54px minmax(0,1fr)}.lesson-row .lesson-day{place-items:center;padding:0}.lesson-title-row{grid-template-columns:1fr;gap:5px}.lesson-single-document.lesson-article{padding:20px 16px;border-radius:var(--radius-lg);font-size:15px;line-height:1.68}.lesson-article h1{font-size:24px}.lesson-article h2{font-size:18px}.course-card{min-height:auto}.course-program{width:min(92vw,360px)}.chat-message{max-width:96%}}.lesson-single-document.lesson-article{max-width:880px;margin:0 auto;padding:clamp(24px,4vw,44px);background:#fffefb;border:1px solid rgba(47,58,78,.1);border-radius:24px;box-shadow:0 18px 52px #1a233614;color:var(--skivo-text-primary);line-height:1.68}.lesson-single-document .lesson-article-section{padding-top:28px;border-top:1px solid rgba(47,58,78,.11)}.lesson-single-document .lesson-article-section:first-child{padding-top:0;border-top:0}.lesson-single-document h1{max-width:780px;margin:8px 0 12px;font-size:clamp(2rem,4.5vw,3.1rem);letter-spacing:-.045em;line-height:1.05}.lesson-single-document h2{margin:0 0 14px;font-size:clamp(1.3rem,2vw,1.72rem);letter-spacing:-.025em;color:var(--skivo-text-primary)}.lesson-single-document .lesson-article-subheading{margin:28px 0 10px;padding-left:14px;border-left:3px solid var(--skivo-accent);font-size:1.05rem;letter-spacing:-.01em;color:var(--skivo-text-primary)}.lesson-single-document p,.lesson-single-document li{max-width:820px;font-size:1rem;line-height:1.72;color:var(--skivo-text-secondary)}.lesson-single-document p+p{margin-top:14px}.lesson-single-document ul,.lesson-single-document ol,.lesson-single-document .lesson-prose-list{display:grid;gap:10px;margin:12px 0 0;padding-left:1.35rem}.lesson-single-document strong{color:var(--skivo-text-primary);font-weight:760}.lesson-single-document .lesson-callout{margin-top:8px;padding:24px;border:1px solid rgba(194,143,68,.22);border-radius:18px;background:#fff8ea}.lesson-action-panel .btn-compact:disabled,.lesson-action-panel button:disabled{cursor:wait;opacity:.68}@media(max-width:720px){.lesson-single-document.lesson-article{padding:20px;border-radius:18px}.lesson-single-document p,.lesson-single-document li{font-size:.97rem;line-height:1.66}.lesson-single-document .lesson-callout{padding:18px}.lesson-table,.lesson-code-block{font-size:.84rem}.lesson-table th,.lesson-table td{padding:9px 10px}}.lesson-single-document.lesson-article{background:#fffdfa;color:var(--skivo-text)}.lesson-single-document .lesson-article-subheading{margin-top:30px;margin-bottom:12px;padding:10px 12px;border-left:4px solid var(--skivo-primary);border-radius:0 12px 12px 0;background:#f8faff;color:var(--skivo-text);box-shadow:inset 0 0 0 1px #5146e50f}.lesson-single-document .lesson-prose-list,.lesson-single-document.lesson-article ol,.lesson-single-document.lesson-article ul{display:block;max-width:820px;margin:10px 0 20px;padding-left:1.55rem}.lesson-single-document .lesson-prose-list--bullet,.lesson-single-document.lesson-article ul.lesson-prose-list--bullet{list-style:disc outside}.lesson-single-document .lesson-prose-list--ordered,.lesson-single-document.lesson-article ol.lesson-prose-list--ordered{list-style:decimal outside}.lesson-single-document .lesson-prose-list li,.lesson-single-document.lesson-article ol>li,.lesson-single-document.lesson-article ul>li{margin:0 0 8px;padding-left:.22rem;line-height:1.58}.lesson-single-document .lesson-prose-list li:last-child,.lesson-single-document.lesson-article ol>li:last-child,.lesson-single-document.lesson-article ul>li:last-child{margin-bottom:0}.lesson-single-document .lesson-structured-list{display:block;max-width:820px;margin:10px 0 22px;padding-left:1.65rem;list-style:decimal outside}.lesson-single-document .lesson-structured-list>li{margin:0 0 14px;padding-left:.25rem;color:var(--skivo-text-secondary);line-height:1.58}.lesson-single-document .lesson-structured-list>li:last-child{margin-bottom:0}.lesson-single-document .lesson-structured-list__title{color:var(--skivo-text-primary);font-weight:780;line-height:1.48}.lesson-single-document .lesson-structured-list__body{margin-top:5px;color:var(--skivo-text-secondary);line-height:1.6}.lesson-single-document p+.lesson-prose-list,.lesson-single-document p+ol,.lesson-single-document p+ul{margin-top:8px}.lesson-single-document .lesson-checklist{list-style:disc outside;margin-top:8px}.lesson-single-document .lesson-definition-list{display:grid;gap:9px;max-width:820px;margin:10px 0 20px;padding:0}.lesson-single-document .lesson-definition-row{display:grid;grid-template-columns:minmax(8rem,max-content) 1fr;gap:.45rem .75rem;align-items:baseline;color:var(--skivo-text-secondary);font-size:1rem;line-height:1.58}.lesson-single-document .lesson-definition-row dt{margin:0;color:var(--skivo-text-primary);font-weight:800}.lesson-single-document .lesson-definition-row dd{margin:0}@media(max-width:720px){.lesson-single-document .lesson-definition-row{grid-template-columns:1fr;gap:.15rem}}.lesson-single-document .lesson-inline-code{display:inline;border:1px solid #d0d5dd;border-radius:7px;background:#f8fafc;padding:0 .35em;color:#1d2939;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:.92em}.lesson-code-block{max-width:820px;width:100%;margin:14px 0 18px;overflow-x:auto;border:1px solid #d0d5dd;border-radius:14px;background:#111827;padding:1rem;color:#f9fafb;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:.9rem;line-height:1.55}.lesson-code-block code{color:inherit;white-space:pre}.lesson-table-pre{background:#0f172a}.lesson-table-wrap{width:100%;max-width:820px;overflow-x:auto;margin:14px 0 18px;border:1px solid #d0d5dd;border-radius:14px;background:#fff;box-shadow:var(--shadow-xs)}.lesson-table{width:100%;min-width:560px;border-collapse:collapse;font-size:.94rem;line-height:1.5}.lesson-table th,.lesson-table td{border-right:1px solid #eaecf0;border-bottom:1px solid #eaecf0;padding:11px 13px;text-align:left;vertical-align:top;color:var(--skivo-text-secondary)}.lesson-table th:last-child,.lesson-table td:last-child{border-right:0}.lesson-table tr:last-child td{border-bottom:0}.lesson-table thead th{background:#f8faff;color:var(--skivo-text);font-weight:800}.lesson-single-document ol>li::marker,.lesson-single-document ul>li::marker{color:var(--skivo-primary-active);font-weight:800}.lesson-single-document .lesson-callout{background:#fff8ec}.lesson-section-actions{display:flex;flex-wrap:wrap;gap:.65rem;margin-top:1rem}.chat-user{background:#3730a3;color:#fff}.chat-user .chat-message-meta{color:#ffffffdb}.chat-user .chat-message-meta strong{color:#fff}.chat-assistant .chat-message-meta strong{color:var(--skivo-text)}.standalone-tutor-sidebar .selector-row small{color:#475467}.composer-mode-chips{border:1px solid var(--skivo-border);border-radius:1rem;background:#fff;padding:.75rem}.chat-hint.active{border-color:#a4bcfd;background:var(--skivo-primary-soft);color:var(--skivo-primary-active)}.chat-message{overflow-wrap:break-word;word-break:normal}.chat-message-content{display:grid;gap:.45rem;min-width:0}.chat-message-content p,.chat-message-content ul,.chat-message-content ol,.chat-message-content pre{margin:0}.chat-markdown ul,.chat-markdown ol{display:grid;gap:.35rem;padding-left:1.25rem}.chat-section-heading{margin:.32rem 0 .2rem;font-size:.92rem;font-weight:780;line-height:1.25;color:var(--skivo-text);letter-spacing:.005em}.chat-markdown a{color:var(--skivo-primary-active);text-decoration:underline;text-underline-offset:.13rem;word-break:break-word}.chat-markdown a:hover{color:var(--skivo-primary-hover)}.chat-message-content>p+p,.chat-markdown>.chat-section-heading+p,.chat-markdown p+.chat-section-heading{margin-top:.38rem}.chat-markdown strong{color:inherit;font-weight:800}.chat-inline-code,.chat-code-block code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace}.chat-inline-code{border:1px solid rgba(148,163,184,.32);border-radius:.4rem;background:#f8fafc;padding:.05rem .3rem;color:#1f2937;font-size:.92em}.chat-code-block{max-width:100%;overflow-x:auto;border:1px solid var(--skivo-border);border-radius:.75rem;background:#0f172a;padding:.75rem;color:#e5e7eb;white-space:pre}.chat-code-block code{color:inherit;font-size:.88rem}.chat-list,.standalone-chat-list{min-width:0}.chat-message{box-sizing:border-box;min-width:0;width:-moz-fit-content;width:fit-content;max-width:min(820px,100%);overflow-wrap:break-word}.chat-assistant{justify-self:start;max-width:min(820px,100%);border-color:#94a3b847;box-shadow:0 10px 30px #0f172a0d}.chat-user{justify-self:end;max-width:min(720px,85%)}.chat-message-content{line-height:1.55;overflow-wrap:break-word;word-break:normal}.chat-plain-text p{white-space:pre-wrap}.chat-markdown{gap:.42rem}.chat-markdown p{color:inherit}.chat-section-heading{margin:.52rem 0 .1rem;font-size:.94rem;font-weight:820;line-height:1.25;color:var(--skivo-text)}.chat-markdown>.chat-section-heading:first-child{margin-top:0}.chat-markdown ul,.chat-markdown ol{gap:.24rem;padding-left:1.15rem}.chat-markdown ul{list-style:disc outside}.chat-markdown ol{list-style:decimal outside}.chat-markdown li{padding-left:.05rem}.chat-code-block{width:100%;box-sizing:border-box}.homework-row{width:100%}.homework-main{display:grid;grid-template-columns:minmax(0,1fr) minmax(190px,auto);gap:18px;align-items:start;width:100%;padding:18px}.homework-content-cell,.homework-meta-cell{min-width:0}.homework-content-cell{display:grid;gap:12px}.homework-card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;min-width:0}.homework-card-header .badge{flex:0 0 auto}.homework-title-cell{min-width:0}.homework-title-cell h3{margin:0;color:var(--skivo-text);font-size:1rem;line-height:1.35;overflow-wrap:break-word;word-break:normal}.homework-prompt,.homework-submission p,.homework-feedback-cell p{margin:0;color:var(--skivo-text-secondary);line-height:1.58;overflow-wrap:break-word;word-break:normal;white-space:pre-wrap}.homework-prompt{color:var(--skivo-text)}.homework-submission,.homework-feedback-cell{display:grid;gap:5px;border-top:1px solid var(--skivo-border);padding-top:10px}.homework-submission span,.homework-feedback-cell span{color:var(--skivo-muted);font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.06em}.homework-feedback-cell p{color:var(--skivo-muted)}.homework-meta-cell{display:grid;gap:12px;justify-items:end}.homework-status-cell{display:grid;gap:8px;justify-items:end;color:var(--skivo-muted);font-size:13px}.homework-action-cell{justify-self:end}@media(max-width:760px){.homework-main{grid-template-columns:1fr;padding:14px}.homework-card-header,.homework-meta-cell,.homework-status-cell{justify-items:start}.homework-card-header{display:grid}.homework-action-cell,.homework-action-cell .btn{width:100%}}.tutor-mode-note{margin-top:.35rem;color:var(--skivo-primary-active);font-weight:760}.standalone-tutor-main .tutor-context-card{background:#fff}@media(max-width:760px){.standalone-tutor-grid{display:block}.standalone-tutor-sidebar{display:none;margin-bottom:1rem}.standalone-tutor-sidebar.open{display:grid;position:fixed;inset:4.5rem .75rem auto;z-index:50;max-height:min(70vh,620px);overflow:auto;padding:.75rem;border:1px solid var(--skivo-border);border-radius:1rem;background:#fff;box-shadow:var(--shadow-md)}.lesson-single-document.lesson-article{max-width:100%;padding:18px}.lesson-action-panel{grid-template-columns:repeat(2,minmax(0,1fr))}.composer-mode-chips{display:flex;overflow-x:auto;padding:.6rem}.composer-mode-chips .chat-hint{flex:0 0 auto;min-width:-moz-max-content;min-width:max-content}}.course-workspace,.course-workspace-grid,.course-workspace-content,.selected-lesson,.lesson-hero-card,.lesson-overview-card,.lesson-single-document,.standalone-tutor,.standalone-tutor-grid,.standalone-tutor-main,.standalone-tutor-sidebar{min-width:0;max-width:100%}.lesson-single-document.lesson-article,.lesson-table-wrap,.lesson-code-block{max-width:100%}.lesson-single-document img,.lesson-content img,.lesson-article img{max-width:100%;height:auto}.lesson-card-title,.lesson-detail-header h1,.lesson-single-document h1,.lesson-single-document h2,.standalone-tutor h1,.standalone-tutor h2{max-width:100%;overflow-wrap:break-word}.lesson-single-document p,.lesson-single-document li,.lesson-single-document dd,.lesson-single-document td,.lesson-single-document th{overflow-wrap:break-word;word-break:normal}.lesson-status-badge,.lesson-day-badge{flex:0 0 auto}.compact-empty-state,.standalone-tutor-main .empty-state{padding:16px;gap:8px;min-height:auto}.standalone-tutor-main .empty-state .empty-icon{width:34px;height:34px;border-radius:10px;font-size:16px}.standalone-tutor-main .empty-state h2{margin:0;font-size:1.05rem;line-height:1.25}.standalone-tutor-main .empty-state p{margin:0;font-size:.9rem;line-height:1.45}@media(max-width:760px){.course-workspace-grid{display:grid;grid-template-columns:1fr}.course-program.course-program-mobile,.course-program.course-program-mobile.open{position:static;inset:auto;z-index:auto;display:grid;width:100%;max-height:none;overflow:visible;transform:none;border-radius:var(--radius-lg);box-shadow:var(--shadow-xs)}.mobile-program-toggle{display:none}.lesson-list.compact-learning-cards{grid-template-columns:1fr}.lesson-row.lesson-card-mobile,.lesson-row.lesson-button.lesson-card-mobile{width:100%;min-width:0;display:grid;grid-template-columns:64px minmax(0,1fr);align-items:start;gap:10px;padding:10px}.lesson-card-mobile .lesson-day-badge{min-height:42px;padding:0 8px;place-items:center;text-align:center;border-radius:var(--radius-md);font-size:12px}.lesson-card-mobile .lesson-body{min-width:0;gap:6px}.lesson-card-mobile .lesson-title-row{display:grid;grid-template-columns:1fr;gap:6px;min-width:0}.lesson-card-mobile .lesson-card-title{min-width:0;font-size:14px;line-height:1.3;overflow-wrap:break-word;word-break:normal}.lesson-card-mobile .lesson-status-badge{justify-self:start;white-space:normal;line-height:1.15}.lesson-card-mobile .lesson-body p{display:-webkit-box;overflow:hidden;-webkit-line-clamp:2;-webkit-box-orient:vertical}.lesson-detail-header{display:grid;gap:12px}.lesson-detail-header h1,.lesson-single-document h1{font-size:clamp(1.45rem,8vw,2rem);letter-spacing:0;line-height:1.12}.lesson-single-document.lesson-article{width:100%;padding:16px;border-radius:var(--radius-lg)}.lesson-code-block,.lesson-table-wrap{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.lesson-code-block code{white-space:pre}.lesson-action-panel,.lesson-section-actions,.selected-lesson .button-row{display:grid;grid-template-columns:1fr;width:100%}.lesson-action-panel .btn,.lesson-section-actions .btn,.selected-lesson .button-row .btn{width:100%;min-height:40px}.compact-ai-grid,.standalone-tutor-grid{display:grid;grid-template-columns:1fr;gap:12px}.tutor-mobile-toggle{display:none}.standalone-tutor-sidebar.ai-tutor-mobile-panel,.standalone-tutor-sidebar.ai-tutor-mobile-panel.open{position:static;inset:auto;z-index:auto;display:grid;width:100%;max-height:none;overflow:visible;transform:none;padding:0;border:0;box-shadow:none;background:transparent}.ai-tutor-mobile-panel .card{padding:12px}.ai-tutor-mobile-panel .tutor-selector-list{max-height:180px;overflow:auto}.compact-context-card{padding:12px}.compact-context-card .section-header{gap:8px;margin-bottom:0}.compact-context-card h2{font-size:1rem}.compact-context-card p{font-size:.88rem;line-height:1.4}.composer-mode-chips{display:flex;gap:8px;overflow-x:auto;padding:8px}.standalone-composer{margin-bottom:0}}@media(max-width:430px){.page{width:100%;max-width:100%;padding-inline:12px}.card{padding:14px}.lesson-row.lesson-card-mobile,.lesson-row.lesson-button.lesson-card-mobile{grid-template-columns:58px minmax(0,1fr)}.lesson-single-document.lesson-article{padding:14px}.lesson-table{min-width:520px}}.course-workspace,.course-workspace *,.lesson-single-document,.lesson-single-document *{box-sizing:border-box}.course-workspace,.course-workspace-grid,.course-workspace-content,.course-workspace-content--lesson,.selected-lesson,.lesson-hero-card,.lesson-overview-card,.lesson-single-document.lesson-article,.lesson-single-document .lesson-article-section,.lesson-section-actions{min-width:0;max-width:100%}.course-workspace{overflow-x:hidden;overflow-x:clip}.mobile-lesson-program-link{display:none}.lesson-title-row h3,.lesson-card-title{overflow-wrap:break-word;word-break:normal;-webkit-hyphens:auto;hyphens:auto}.lesson-single-document.lesson-article{width:min(100%,880px)}.lesson-single-document p,.lesson-single-document li,.lesson-single-document dd{max-width:100%;overflow-wrap:break-word;word-break:normal}.lesson-single-document .lesson-inline-code{overflow-wrap:anywhere}.lesson-table-wrap,.lesson-code-block,.lesson-table-pre{max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.lesson-code-block code{display:block;min-width:-moz-max-content;min-width:max-content}@media(max-width:760px){.course-workspace-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:12px}.course-program.course-program-mobile.course-program-overview-route,.course-program.course-program-mobile.course-program-overview-route.open{position:static;inset:auto;z-index:auto;display:grid;width:100%;max-height:none;overflow:visible;transform:none;border-radius:var(--radius-lg);box-shadow:var(--shadow-xs)}.course-program.course-program-mobile.course-program-lesson-route.course-program-mobile-hidden-on-detail,.course-program.course-program-mobile.course-program-lesson-route.course-program-mobile-hidden-on-detail.open,.mobile-program-toggle{display:none}.mobile-lesson-program-link{display:flex;width:100%;margin-bottom:10px}.mobile-lesson-program-link .btn{width:auto;min-height:38px}.lesson-row.lesson-card-mobile,.lesson-row.lesson-button.lesson-card-mobile{width:100%;min-width:0;max-width:100%;display:grid;grid-template-columns:minmax(0,1fr);gap:9px;align-items:start;padding:14px;text-align:left}.lesson-card-mobile .lesson-day-badge{justify-self:start;min-height:0;width:auto;min-width:0;padding:5px 9px;border-radius:999px;font-size:12px;line-height:1.15;white-space:nowrap}.lesson-card-mobile .lesson-body,.lesson-card-mobile .lesson-title-row{width:100%;min-width:0}.lesson-card-mobile .lesson-title-row{display:grid;grid-template-columns:minmax(0,1fr);gap:7px;align-items:start}.lesson-card-mobile .lesson-card-title{margin:0;width:100%;min-width:0;max-width:100%;font-size:15px;line-height:1.32;overflow-wrap:break-word;word-break:normal}.lesson-card-mobile .lesson-status-badge{justify-self:start;width:auto;max-width:100%;white-space:normal;line-height:1.15}.lesson-card-mobile .lesson-body p{max-width:100%;margin:0;font-size:13px;line-height:1.4;display:-webkit-box;overflow:hidden;-webkit-line-clamp:2;-webkit-box-orient:vertical}.lesson-detail-header{grid-template-columns:minmax(0,1fr)}.lesson-detail-header h1,.lesson-single-document h1{font-size:clamp(1.45rem,7vw,2rem);letter-spacing:0;line-height:1.14}.lesson-single-document.lesson-article{width:100%;padding:16px;border-radius:var(--radius-lg)}.lesson-single-document .lesson-callout{padding:16px}.lesson-table{width:-moz-max-content;width:max-content;min-width:520px}.lesson-action-panel,.lesson-section-actions,.selected-lesson .button-row{display:grid;grid-template-columns:minmax(0,1fr);width:100%;gap:8px}.lesson-action-panel .btn,.lesson-section-actions .btn,.selected-lesson .button-row .btn{width:100%;min-height:40px}}@media(max-width:430px){.lesson-row.lesson-card-mobile,.lesson-row.lesson-button.lesson-card-mobile{grid-template-columns:minmax(0,1fr);padding:13px}.lesson-single-document.lesson-article{padding:14px}.lesson-table{min-width:500px}}.app-shell{transition:grid-template-columns .18s ease}.app-shell-expanded{grid-template-columns:272px minmax(0,1fr)}.app-shell-collapsed{grid-template-columns:88px minmax(0,1fr)}.sidebar{width:272px;overflow:hidden;transition:width .18s ease,padding .18s ease}.sidebar-expanded{width:272px;align-items:stretch}.sidebar-header{display:grid;grid-template-columns:minmax(0,1fr) 44px;gap:8px;align-items:center}.sidebar-toggle{width:40px;height:40px;border-radius:var(--radius-md)}.brand{min-width:0}.brand-wordmark{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-collapsed{width:88px;align-items:center;padding-inline:12px}.sidebar-collapsed .sidebar-header{grid-template-columns:1fr;justify-items:center;width:100%}.sidebar-collapsed .brand{justify-content:center}.sidebar-collapsed .brand-wordmark,.sidebar-collapsed .nav-label,.sidebar-collapsed .sidebar-user-details{display:none}.sidebar-collapsed .nav-list{width:100%}.sidebar-collapsed .nav-link{justify-content:center;padding-inline:0}.sidebar-collapsed .nav-link-active{box-shadow:inset 0 0 0 1px #d9ddff}.sidebar-collapsed .sidebar-footer{width:100%;justify-items:center}.sidebar-user-card{grid-template-columns:auto minmax(0,1fr);align-items:center}.sidebar-collapsed .sidebar-user-card{width:48px;height:48px;padding:0;place-items:center;grid-template-columns:1fr}.user-avatar{width:32px;height:32px;display:grid;place-items:center;border-radius:var(--radius-md);background:var(--skivo-primary-soft);color:var(--skivo-primary-active);font-size:13px;font-weight:850}.sidebar-collapsed .sidebar-logout{width:44px;height:44px}.my-courses-card{border-color:#d9ddff;background:linear-gradient(180deg,#fff,#f8faff)}.tutor-panel-card{display:grid;gap:10px}.tutor-panel-title{margin-bottom:0}.tutor-history-row span,.tutor-select-label span{font-size:13px;font-weight:760;line-height:1.3}.tutor-history-row small,.tutor-select-field{font-size:13px;line-height:1.35}.tutor-select-field{min-height:40px;font-weight:640;color:var(--skivo-text-secondary)}.tutor-selector-list{max-height:min(42vh,360px);overscroll-behavior:contain}.chat-history-window{display:grid;gap:10px;min-width:0;min-height:0}.standalone-chat-list{max-height:min(58vh,620px);overflow:auto;overscroll-behavior:contain;padding:0 4px 2px}.load-older-messages{justify-self:center;width:auto}.compact-empty-state .empty-state{padding:16px;gap:8px;min-height:auto;border-style:solid}.compact-empty-state .empty-icon{width:32px;height:32px;border-radius:var(--radius-md);font-size:15px}.compact-empty-state h2{margin:0;font-size:1.05rem;line-height:1.25}.compact-empty-state p{margin:0;font-size:.9rem;line-height:1.45}@media(max-width:1100px){.app-shell,.app-shell-expanded,.app-shell-collapsed{grid-template-columns:1fr}}@media(max-width:760px){.auth-brand-panel{display:none}.standalone-chat-list{max-height:52vh}.load-older-messages{width:100%}}.adaptive-tools{margin-top:1.25rem}.course-level-selector{display:grid;gap:1rem}.course-level-selector--compact{padding-block:1rem}.course-level-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem}.course-level-option{min-height:5.5rem;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:.35rem;text-align:left;white-space:normal}.course-level-option span{font-size:1.05rem;font-weight:750}.course-level-option small{max-width:36rem;font-size:.88rem;line-height:1.45;color:var(--muted, #64748b)}.course-level-option--selected small{color:inherit;opacity:.88}.course-level-selector--compact .course-level-option{min-height:var(--lesson-button-height);align-items:center;text-align:center}.course-level-selector--compact .course-level-option span{font-size:var(--lesson-button-font-size);font-weight:760;line-height:1.15}.course-level-error{margin:0;color:var(--danger, #b91c1c);font-weight:650}.adaptive-rubric{display:grid;gap:.75rem;margin:1rem 0;padding:0;list-style:none}.adaptive-rubric li{display:grid;gap:.2rem;padding:.85rem 1rem;border:1px solid var(--border, #dfe5ee);border-radius:.85rem;background:#f8fafc}.adaptive-rubric span{color:var(--muted, #64748b)}.adaptive-feedback{display:grid;gap:.7rem;margin-top:1rem;padding:1rem;border-radius:1rem;background:#f2f8ff}.artifact-preview{max-width:100%;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;padding:1rem;border-radius:.75rem;background:#f8fafc}@media(max-width:640px){.course-level-options{grid-template-columns:1fr}.course-level-selector--compact .course-level-option{width:100%;min-height:var(--lesson-button-mobile-height)}.adaptive-tools .card{padding:1rem}}.ai-tutor-workspace{--tutor-sidebar-width: 292px;position:relative;display:grid;grid-template-columns:var(--tutor-sidebar-width) minmax(0,1fr);height:calc(100dvh - (var(--space-page) * 2));min-height:620px;overflow:hidden;border:1px solid var(--skivo-border);border-radius:var(--radius-xl);background:var(--skivo-surface);box-shadow:var(--shadow-sm)}.ai-tutor-workspace.history-collapsed{grid-template-columns:0 minmax(0,1fr)}.tutor-history-sidebar{position:relative;z-index:3;display:grid;grid-template-rows:auto auto auto auto minmax(0,1fr);gap:12px;min-width:0;min-height:0;padding:16px 12px;overflow:hidden;border-right:1px solid var(--skivo-border);background:#f8fafc;transition:transform .18s ease,opacity .18s ease}.history-collapsed .tutor-history-sidebar{visibility:hidden;opacity:0;pointer-events:none}.tutor-history-header,.tutor-history-title,.tutor-chat-title-row,.tutor-context-controls,.tutor-dialog-header,.tutor-dialog-actions,.tutor-composer-context,.tutor-message-meta,.tutor-message-actions,.tutor-answering,.tutor-paywall-note,.tutor-send-error{display:flex;align-items:center}.tutor-history-header,.tutor-dialog-header{justify-content:space-between;gap:12px}.tutor-history-title{min-width:0;gap:9px;font-size:15px}.tutor-history-mark,.tutor-empty-mark,.tutor-avatar{display:grid;flex:0 0 auto;place-items:center;color:#fff;background:var(--skivo-primary);font-weight:850}.tutor-history-mark{width:30px;height:30px;border-radius:9px;font-size:13px}.tutor-icon-button{width:40px;height:40px;flex:0 0 auto;display:inline-grid;place-items:center;padding:0;border:1px solid transparent;border-radius:var(--radius-md);background:transparent;color:var(--skivo-muted)}.tutor-icon-button:hover{border-color:var(--skivo-border);background:var(--skivo-surface);color:var(--skivo-text)}.tutor-history-close-mobile,.tutor-mobile-history-trigger{display:none}.tutor-new-chat-button{width:100%;min-height:44px;display:flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:var(--radius-lg);background:var(--skivo-primary);color:#fff;font-weight:780}.tutor-new-chat-button:hover,.tutor-send-button:hover:not(:disabled){background:var(--skivo-primary-hover)}.tutor-search-field{min-width:0;min-height:42px;display:flex;align-items:center;gap:8px;padding:0 11px;border:1px solid var(--skivo-border);border-radius:var(--radius-md);background:var(--skivo-surface);color:var(--skivo-muted)}.tutor-search-field:focus-within{border-color:var(--skivo-primary);box-shadow:0 0 0 3px var(--skivo-focus)}.tutor-search-field input{min-width:0;width:100%;height:40px;padding:0;border:0;outline:0;background:transparent;color:var(--skivo-text)}.tutor-field-label{display:grid;gap:6px;color:var(--skivo-text-secondary);font-size:13px;font-weight:730}.tutor-field-label select,.tutor-field-label input,.tutor-context-controls select{width:100%;min-height:40px;border:1px solid var(--skivo-border-strong);border-radius:var(--radius-md);background:var(--skivo-surface);color:var(--skivo-text-secondary)}.tutor-field-label select,.tutor-context-controls select{padding:0 34px 0 10px}.tutor-field-label input{padding:0 11px}.tutor-history-list{min-height:0;overflow-y:auto;overscroll-behavior:contain;scrollbar-gutter:stable;padding:0 3px 20px 0}.tutor-history-group{display:grid;gap:4px;margin:0 0 14px}.tutor-history-group h2{margin:0;padding:4px 9px;color:var(--skivo-muted);font-size:11px;font-weight:800;letter-spacing:.055em;text-transform:uppercase}.tutor-history-item{position:relative;min-width:0;border-radius:var(--radius-lg)}.tutor-history-item:hover,.tutor-history-item.active{background:#edf1f7}.tutor-history-item.active{box-shadow:inset 3px 0 0 var(--skivo-primary)}.tutor-history-select{width:100%;min-width:0;display:grid;gap:3px;padding:10px 38px 10px 12px;border:0;border-radius:inherit;background:transparent;color:var(--skivo-text-secondary);text-align:left}.tutor-history-select strong,.tutor-history-select span,.tutor-history-select small{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tutor-history-select strong{color:var(--skivo-text);font-size:14px;line-height:1.35}.tutor-history-select span,.tutor-history-select small{color:var(--skivo-muted);font-size:12px;line-height:1.35}.tutor-history-select small{display:flex;justify-content:space-between;gap:8px}.tutor-history-select time{flex:0 0 auto;margin-left:auto}.tutor-history-menu-button{position:absolute;top:8px;right:5px;width:32px;height:32px;display:grid;place-items:center;padding:0;border:0;border-radius:var(--radius-sm);background:transparent;color:var(--skivo-muted);opacity:0}.tutor-history-item:hover .tutor-history-menu-button,.tutor-history-item.active .tutor-history-menu-button,.tutor-history-menu-button:focus-visible,.tutor-history-menu-button[aria-expanded=true]{opacity:1}.tutor-history-menu{position:absolute;z-index:8;top:36px;right:5px;min-width:154px;display:grid;padding:5px;border:1px solid var(--skivo-border);border-radius:var(--radius-md);background:var(--skivo-surface);box-shadow:var(--shadow-md)}.tutor-history-menu button{min-height:38px;display:flex;align-items:center;gap:7px;padding:0 9px;border:0;border-radius:var(--radius-sm);background:transparent;color:var(--skivo-text-secondary);text-align:left}.tutor-history-menu button:hover{background:var(--skivo-surface-soft);color:var(--skivo-text)}.tutor-history-skeleton{display:grid;gap:10px;padding:6px}.tutor-history-skeleton span{height:62px;border-radius:var(--radius-lg);background:linear-gradient(90deg,#eef1f5 25%,#f8fafc,#eef1f5 65%);background-size:200% 100%;animation:tutor-skeleton 1.2s linear infinite}@keyframes tutor-skeleton{to{background-position:-200% 0}}.tutor-empty-note{margin:0;padding:10px;color:var(--skivo-muted);font-size:13px;line-height:1.5}.tutor-inline-error{display:grid;gap:8px;padding:10px;border:1px solid #fecdca;border-radius:var(--radius-md);background:#fef3f2;color:var(--skivo-danger);font-size:13px}.tutor-inline-error p{margin:0}.tutor-inline-error button,.tutor-load-more,.tutor-load-older{width:-moz-fit-content;width:fit-content;min-height:36px;padding:0 10px;border:1px solid var(--skivo-border);border-radius:var(--radius-md);background:var(--skivo-surface);color:var(--skivo-primary-active);font-size:13px;font-weight:720}.tutor-load-more{width:100%}.tutor-chat-surface{min-width:0;min-height:0;display:grid;grid-template-rows:auto minmax(0,1fr) auto;overflow:hidden;background:var(--skivo-surface)}.tutor-chat-header{position:relative;z-index:4;min-width:0;min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px 18px;border-bottom:1px solid var(--skivo-border);background:#fffffff5;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.tutor-chat-title-row,.tutor-chat-title{min-width:0}.tutor-chat-title{display:grid;gap:2px}.tutor-chat-title>span{color:var(--skivo-primary-active);font-size:11px;font-weight:820;letter-spacing:.07em;text-transform:uppercase}.tutor-chat-title h1,.tutor-chat-title p{min-width:0;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tutor-chat-title h1{max-width:min(32vw,430px);color:var(--skivo-text);font-size:16px;line-height:1.3;letter-spacing:-.02em}.tutor-chat-title p{max-width:min(36vw,520px);color:var(--skivo-muted);font-size:12px}.tutor-context-controls{min-width:0;justify-content:flex-end;gap:7px}.tutor-context-controls label{min-width:0}.tutor-context-controls label:first-child{width:min(18vw,220px)}.tutor-context-controls label:nth-child(2){width:min(20vw,260px)}.tutor-context-controls select{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.tutor-messages{position:relative;min-width:0;min-height:0;overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;scrollbar-gutter:stable;background:#fff}.tutor-message-column{width:min(100%,860px);min-height:100%;display:flex;flex-direction:column;gap:26px;margin:0 auto;padding:34px 28px 56px}.tutor-empty-workspace{width:min(100%,680px);display:grid;place-items:center;align-content:center;gap:12px;margin:auto;padding:44px 12px;text-align:center}.tutor-empty-mark{width:46px;height:46px;border-radius:14px;background:var(--skivo-primary-soft);color:var(--skivo-primary)}.tutor-empty-workspace h2{margin:2px 0 0;font-size:clamp(1.45rem,2.5vw,2rem);letter-spacing:-.035em}.tutor-empty-workspace>p{max-width:590px;margin:0;color:var(--skivo-muted);line-height:1.6}.tutor-starters{width:min(100%,650px);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin-top:10px}.tutor-starters button{min-height:48px;padding:10px 13px;border:1px solid var(--skivo-border);border-radius:var(--radius-lg);background:var(--skivo-surface);color:var(--skivo-text-secondary);font-weight:690;text-align:left}.tutor-starters button:hover{border-color:#c7d7fe;background:#f8faff;color:var(--skivo-text)}.tutor-message{min-width:0;display:flex;align-items:flex-start;gap:11px}.tutor-message-user{justify-content:flex-end}.tutor-avatar{width:30px;height:30px;margin-top:2px;border-radius:9px;font-size:12px}.tutor-message-body{min-width:0;max-width:min(100%,760px)}.tutor-message-user .tutor-message-body{max-width:min(84%,660px);padding:11px 14px;border-radius:15px 15px 4px;background:#f0f2f6}.tutor-message-meta{gap:8px;margin-bottom:5px;color:var(--skivo-muted);font-size:12px}.tutor-message-meta strong{color:var(--skivo-text-secondary);font-size:13px}.tutor-message-meta time,.tutor-message-meta span{margin-left:auto}.tutor-message-pending{opacity:.72}.ai-tutor-workspace .chat-message-content{min-width:0;color:var(--skivo-text-secondary);font-size:15px;line-height:1.66;overflow-wrap:anywhere}.ai-tutor-workspace .chat-plain-text{white-space:pre-wrap}.ai-tutor-workspace .chat-markdown>:first-child{margin-top:0}.ai-tutor-workspace .chat-markdown>:last-child{margin-bottom:0}.ai-tutor-workspace .chat-markdown p,.ai-tutor-workspace .chat-markdown ul,.ai-tutor-workspace .chat-markdown ol,.ai-tutor-workspace .chat-markdown blockquote,.ai-tutor-workspace .chat-markdown .tutor-code-shell,.ai-tutor-workspace .chat-markdown .tutor-table-scroll{margin:0 0 14px}.ai-tutor-workspace .chat-markdown h2,.ai-tutor-workspace .chat-markdown h3,.ai-tutor-workspace .chat-markdown h4{margin:22px 0 8px;color:var(--skivo-text);line-height:1.35;letter-spacing:-.02em}.ai-tutor-workspace .chat-markdown h2{font-size:1.25rem}.ai-tutor-workspace .chat-markdown h3{font-size:1.1rem}.ai-tutor-workspace .chat-markdown h4{font-size:1rem}.ai-tutor-workspace .chat-markdown ul,.ai-tutor-workspace .chat-markdown ol{padding-left:1.45rem}.ai-tutor-workspace .chat-markdown li{margin:4px 0}.ai-tutor-workspace .chat-markdown blockquote{padding:2px 0 2px 14px;border-left:3px solid #c7d7fe;color:var(--skivo-muted)}.ai-tutor-workspace .chat-markdown hr{margin:22px 0;border:0;border-top:1px solid var(--skivo-border)}.ai-tutor-workspace .chat-markdown a{color:var(--skivo-primary-active);text-decoration:underline;text-underline-offset:3px}.ai-tutor-workspace .chat-markdown code:not(.chat-code-block code){padding:.12em .35em;border-radius:5px;background:#eef1f5;color:#27324a;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:.9em}.tutor-code-shell{min-width:0;overflow:hidden;border:1px solid #243149;border-radius:var(--radius-lg);background:#111827}.tutor-code-header{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 10px 0 13px;border-bottom:1px solid #2d3a51;color:#cbd5e1;font-family:SFMono-Regular,Consolas,monospace;font-size:12px}.tutor-copy-control,.tutor-message-actions button{display:inline-flex;align-items:center;gap:6px;border:0;background:transparent}.tutor-copy-control{min-height:34px;padding:0 6px;color:#e2e8f0;font-size:12px}.ai-tutor-workspace .chat-code-block{max-width:100%;margin:0;padding:16px;overflow-x:auto;background:transparent;color:#f8fafc;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:13px;line-height:1.55;-moz-tab-size:2;-o-tab-size:2;tab-size:2}.ai-tutor-workspace .chat-code-block code{display:block;width:-moz-max-content;width:max-content;min-width:100%;white-space:pre}.tutor-table-scroll{max-width:100%;overflow-x:auto;border:1px solid var(--skivo-border);border-radius:var(--radius-md)}.tutor-table-scroll table{width:-moz-max-content;width:max-content;min-width:100%;border-collapse:collapse;font-size:13px}.tutor-table-scroll th,.tutor-table-scroll td{padding:9px 11px;border-right:1px solid var(--skivo-border);border-bottom:1px solid var(--skivo-border);text-align:left;vertical-align:top}.tutor-table-scroll th{background:#f8fafc;color:var(--skivo-text);font-weight:760}.tutor-content-error{margin:0;color:var(--skivo-danger)}.tutor-message-actions{gap:2px;margin-top:7px}.tutor-message-actions button{min-height:34px;padding:0 7px;border-radius:var(--radius-sm);color:var(--skivo-muted);font-size:12px}.tutor-message-actions button:hover{background:var(--skivo-surface-soft);color:var(--skivo-text-secondary)}.tutor-answering{width:-moz-fit-content;width:fit-content;gap:5px;padding-left:41px;color:var(--skivo-muted);font-size:13px}.tutor-answering span{width:6px;height:6px;border-radius:999px;background:var(--skivo-primary);animation:tutor-pulse 1.2s ease-in-out infinite}.tutor-answering span:nth-child(2){animation-delay:.14s}.tutor-answering span:nth-child(3){animation-delay:.28s}@keyframes tutor-pulse{0%,65%,to{opacity:.25;transform:translateY(0)}35%{opacity:1;transform:translateY(-2px)}}.tutor-quick-actions{display:flex;gap:7px;min-width:0;overflow-x:auto;scrollbar-width:none}.tutor-quick-actions::-webkit-scrollbar{display:none}.tutor-quick-actions button{min-height:36px;flex:0 0 auto;padding:0 11px;border:1px solid var(--skivo-border);border-radius:999px;background:var(--skivo-surface);color:var(--skivo-text-secondary);font-size:12px;font-weight:690}.tutor-quick-actions button:hover,.tutor-quick-actions button.active{border-color:#c7d7fe;background:var(--skivo-primary-soft);color:var(--skivo-primary-active)}.tutor-jump-latest{position:sticky;z-index:3;left:50%;bottom:12px;min-height:38px;padding:0 13px;transform:translate(-50%);border:1px solid var(--skivo-border);border-radius:999px;background:var(--skivo-surface);color:var(--skivo-text-secondary);box-shadow:var(--shadow-md);font-size:13px;font-weight:720}.tutor-composer-zone{position:relative;z-index:4;min-width:0;display:grid;gap:8px;padding:8px 18px 14px;border-top:1px solid var(--skivo-border);background:#fffffff7;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.tutor-composer-zone .tutor-quick-actions,.tutor-composer-zone .tutor-composer,.tutor-composer-zone .tutor-paywall-note,.tutor-composer-zone .tutor-send-error{width:min(100%,860px);margin-inline:auto}.ai-tutor-workspace .tutor-composer{position:static;bottom:auto;display:grid;grid-template-columns:minmax(0,1fr);gap:6px;align-items:stretch;margin-bottom:0;padding:9px 11px 7px;border:1px solid var(--skivo-border-strong);border-radius:16px;background:var(--skivo-surface);box-shadow:0 12px 30px -24px #101828b3;-webkit-backdrop-filter:none;backdrop-filter:none}.ai-tutor-workspace .tutor-composer:focus-within{border-color:var(--skivo-primary);box-shadow:0 0 0 3px var(--skivo-focus),0 12px 30px -24px #101828b3}.tutor-composer-context{min-width:0;gap:6px;color:var(--skivo-muted);font-size:11px}.tutor-composer-context span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tutor-composer-row{min-width:0;display:grid;grid-template-columns:minmax(0,1fr) 40px;gap:8px;align-items:end}.tutor-composer-row textarea{width:100%;min-height:40px;max-height:176px;padding:9px 2px 7px;resize:none;overflow-y:auto;border:0;outline:0;background:transparent;color:var(--skivo-text);line-height:1.5}.tutor-send-button{width:40px;height:40px;display:grid;place-items:center;padding:0;border:0;border-radius:var(--radius-lg);background:var(--skivo-primary);color:#fff}.tutor-stop-button span{width:12px;height:12px;border-radius:3px;background:currentColor}.tutor-composer>p{margin:0;color:var(--skivo-muted-light);font-size:10px;text-align:right}.tutor-paywall-note,.tutor-send-error{justify-content:space-between;gap:12px;padding:9px 12px;border-radius:var(--radius-md);font-size:13px}.tutor-paywall-note{border:1px solid #fedf89;background:#fffaeb;color:#93370d}.tutor-send-error{border:1px solid #fecdca;background:#fef3f2;color:var(--skivo-danger)}.tutor-paywall-note a,.tutor-send-error button{flex:0 0 auto;border:0;background:transparent;color:inherit;font-weight:780;text-decoration:underline}.tutor-overlay,.tutor-mobile-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a6b}.tutor-overlay{z-index:90;display:grid;place-items:center;padding:20px}.tutor-dialog{width:min(100%,570px);max-height:min(88dvh,760px);display:grid;gap:16px;padding:20px;overflow-y:auto;border:1px solid var(--skivo-border);border-radius:var(--radius-xl);background:var(--skivo-surface);box-shadow:var(--shadow-md)}.tutor-dialog-compact{width:min(100%,470px)}.tutor-dialog-header>div{min-width:0}.tutor-dialog-header h2,.tutor-dialog-header p{margin:0}.tutor-dialog-header h2{margin-top:2px;font-size:20px}.tutor-dialog-header p:not(.tutor-kicker){margin-top:5px;color:var(--skivo-muted);font-size:13px;line-height:1.45}.tutor-kicker{color:var(--skivo-primary-active);font-size:11px;font-weight:820;letter-spacing:.07em;text-transform:uppercase}.tutor-course-options{max-height:240px;display:grid;gap:5px;overflow-y:auto}.tutor-course-options button{width:100%;min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 11px;border:1px solid transparent;border-radius:var(--radius-md);background:#f8fafc;color:var(--skivo-text-secondary);text-align:left}.tutor-course-options button.selected{border-color:#c7d7fe;background:var(--skivo-primary-soft);color:var(--skivo-primary-active)}.tutor-dialog-actions{justify-content:flex-end;gap:9px;padding-top:2px}.tutor-drawer-overlay{place-items:stretch end;padding:0}.tutor-context-drawer{width:min(92vw,430px);height:100dvh;display:flex;flex-direction:column;gap:18px;padding:20px;overflow-y:auto;border-left:1px solid var(--skivo-border);background:var(--skivo-surface);box-shadow:var(--shadow-md)}.tutor-context-drawer-body{display:grid;gap:10px}.tutor-context-drawer-body section{display:grid;gap:5px;padding:14px;border:1px solid var(--skivo-border);border-radius:var(--radius-lg);background:#f8fafc}.tutor-context-drawer-body span{color:var(--skivo-muted);font-size:12px;font-weight:740}.tutor-context-drawer-body p{margin:0;color:var(--skivo-muted);font-size:13px;line-height:1.5}.tutor-context-drawer>.btn{margin-top:auto}.tutor-toast{position:fixed;z-index:110;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));max-width:min(90vw,560px);padding:10px 14px;transform:translate(-50%);border:1px solid var(--skivo-border);border-radius:999px;background:#1d2939;color:#fff;box-shadow:var(--shadow-md);font-size:13px;text-align:center}.tutor-mobile-backdrop{z-index:39;display:none;border:0}@media(max-width:1180px)and (min-width:1101px){.ai-tutor-workspace{--tutor-sidebar-width: 270px}.tutor-chat-header{align-items:flex-start}.tutor-context-controls{flex-wrap:wrap}.tutor-context-controls label:first-child,.tutor-context-controls label:nth-child(2){width:180px}}@media(max-width:1100px){.ai-tutor-workspace{grid-template-columns:minmax(0,1fr);height:calc(100dvh - 112px);min-height:560px}.tutor-history-sidebar{position:fixed;z-index:40;inset:0 auto 0 0;width:min(88vw,340px);height:100dvh;visibility:visible;opacity:1;transform:translate(-105%);border-right:1px solid var(--skivo-border);box-shadow:var(--shadow-md);pointer-events:auto}.tutor-history-sidebar.mobile-open{transform:translate(0)}.tutor-history-close-mobile,.tutor-mobile-history-trigger{display:inline-grid}.tutor-history-collapse,.tutor-expand-history{display:none}.tutor-mobile-backdrop{display:block}.tutor-chat-title h1{max-width:34vw}.tutor-chat-title p{max-width:42vw}.tutor-context-controls label:first-child{width:min(24vw,220px)}.tutor-context-controls label:nth-child(2){width:min(27vw,250px)}}@media(max-width:760px){.ai-tutor-workspace{height:calc(100dvh - 96px);min-height:500px;margin-inline:calc(var(--space-page) * -1);border-right:0;border-left:0;border-radius:0}.tutor-chat-header{min-height:0;display:grid;gap:9px;padding:9px 10px}.tutor-chat-title-row{width:100%}.tutor-chat-title{flex:1 1 auto}.tutor-chat-title h1,.tutor-chat-title p{max-width:calc(100vw - 90px)}.tutor-context-controls{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr) 40px;width:100%}.tutor-context-controls label:first-child,.tutor-context-controls label:nth-child(2){width:auto}.tutor-context-controls select{min-height:40px;padding-inline:8px 24px;font-size:12px}.tutor-message-column{gap:22px;padding:24px 14px 42px}.tutor-empty-workspace{padding:28px 4px}.tutor-starters{grid-template-columns:minmax(0,1fr)}.tutor-message-user .tutor-message-body{max-width:90%}.tutor-message-actions button{min-width:40px;min-height:40px}.tutor-message-actions button span{display:none}.tutor-answering{padding-left:41px}.tutor-composer-zone{padding:7px 10px calc(9px + env(safe-area-inset-bottom))}.tutor-quick-actions button{min-height:40px}.ai-tutor-workspace .tutor-composer{padding:8px 9px 6px;border-radius:14px}.tutor-composer>p{display:none}.tutor-overlay{padding:10px}.tutor-dialog{max-height:94dvh;padding:16px}.tutor-dialog-actions .btn{width:auto}}@media(max-width:430px){.tutor-chat-title>span{display:none}.tutor-chat-title h1{font-size:15px}.tutor-context-controls{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr) 40px}.tutor-message-column{padding-inline:10px}.tutor-avatar{width:28px;height:28px}.ai-tutor-workspace .chat-message-content{font-size:14px}.tutor-message-user .tutor-message-body{max-width:94%}.tutor-paywall-note,.tutor-send-error{align-items:flex-start}}.curriculum-course-grid{grid-template-columns:repeat(auto-fit,minmax(290px,1fr))}.curriculum-course-card{display:flex;min-height:320px;flex-direction:column;gap:18px}.curriculum-course-card h3{margin:0;font-size:20px}.curriculum-course-card p:not(.eyebrow){margin:10px 0 0;color:var(--skivo-muted);line-height:1.55}.curriculum-course-card__meta{display:flex;flex-wrap:wrap;gap:6px 12px;color:var(--skivo-muted);font-size:13px}.curriculum-level-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:auto}.curriculum-level-actions .btn{width:100%;min-width:0;padding-inline:8px;font-size:13px}.curriculum-lesson-page{display:grid;grid-template-columns:minmax(0,1fr);gap:20px;align-items:start}.curriculum-lesson-page.mentor-open{grid-template-columns:minmax(0,1fr) minmax(300px,380px)}.curriculum-lesson-main{display:grid;min-width:0;gap:18px}.curriculum-lesson-topbar{display:flex;align-items:center;justify-content:space-between;gap:12px}.curriculum-lesson-topbar__actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.curriculum-migration-summary{display:grid;gap:14px;border-color:#c7d7fe;background:linear-gradient(145deg,#fff,#f5f7ff)}.curriculum-migration-summary h2,.curriculum-migration-summary p{margin:0}.curriculum-migration-summary__stats{display:flex;flex-wrap:wrap;gap:8px}.curriculum-migration-history,.curriculum-migration-feedback{display:grid;gap:10px;padding:14px;border:1px solid var(--skivo-border);border-radius:var(--radius-lg);background:#fff}.curriculum-migration-history h3,.curriculum-migration-history p{margin:0}.curriculum-lesson-document{min-width:0;overflow:hidden;border:1px solid var(--skivo-border);border-radius:var(--radius-xl);background:var(--skivo-surface);box-shadow:var(--shadow-xs)}.curriculum-lesson-header{display:grid;gap:14px;padding:clamp(22px,4vw,42px);border-bottom:1px solid var(--skivo-border);background:linear-gradient(145deg,#fff 30%,var(--skivo-primary-soft))}.curriculum-lesson-header h1{max-width:900px;margin:0;overflow-wrap:anywhere;font-size:clamp(2rem,5vw,3.75rem);line-height:1.04;letter-spacing:-.05em}.curriculum-lesson-header__meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;color:var(--skivo-muted);font-size:13px}.curriculum-lesson-summary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.curriculum-lesson-summary>div{padding:16px;border:1px solid rgba(208,213,221,.76);border-radius:var(--radius-lg);background:#ffffffb8}.curriculum-lesson-summary p,.curriculum-beta-message{margin:8px 0 0;color:var(--skivo-text-secondary);line-height:1.6}.curriculum-lesson-section{min-width:0;padding:clamp(22px,4vw,42px);border-bottom:1px solid var(--skivo-border)}.curriculum-lesson-section:last-child{border-bottom:0}.curriculum-lesson-section h2{margin:0 0 22px;overflow-wrap:anywhere;font-size:clamp(1.35rem,2.4vw,1.8rem);letter-spacing:-.03em}.curriculum-lesson-section h3{margin:28px 0 12px;font-size:1.12rem}.curriculum-lesson-section__body{display:grid;min-width:0;gap:18px;color:var(--skivo-text-secondary);font-size:16px;line-height:1.72}.curriculum-lesson-section__body>*{min-width:0;margin-block:0}.curriculum-lesson-section__body p{margin:0;overflow-wrap:anywhere}.curriculum-lesson-section__body ul,.curriculum-lesson-section__body ol{display:grid;gap:10px;margin:0;padding-left:24px}.curriculum-checklist{padding-left:0!important;list-style:none}.curriculum-checklist li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px}.curriculum-callout{display:grid;gap:8px;padding:16px 18px;border:1px solid #c7d7fe;border-left:4px solid var(--skivo-primary);border-radius:var(--radius-lg);background:#f8faff}.curriculum-callout--warning,.curriculum-callout--error{border-color:#fedf89;border-left-color:var(--skivo-warning);background:#fffaeb}.curriculum-code-shell{min-width:0;overflow:hidden;border:1px solid #344054;border-radius:var(--radius-lg);background:#101828;color:#f8fafc}.curriculum-code-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 10px 8px 14px;border-bottom:1px solid #344054;color:#d0d5dd;font-size:12px}.curriculum-code-toolbar .btn{width:auto;color:#fff}.curriculum-code-shell pre{max-width:100%;margin:0;overflow:auto;padding:18px;font-size:14px;line-height:1.65;-moz-tab-size:2;-o-tab-size:2;tab-size:2}.curriculum-inline-code{overflow-wrap:anywhere;border-radius:4px;padding:2px 5px;background:#eef2ff;color:#3730a3}.curriculum-media{display:grid;gap:8px;max-width:100%;margin:0}.curriculum-media img{display:block;width:auto;max-width:100%;height:auto;max-height:70vh;margin-inline:auto;border-radius:var(--radius-lg);-o-object-fit:contain;object-fit:contain}.curriculum-media figcaption{color:var(--skivo-text-muted);font-size:14px;text-align:center}.curriculum-table-scroll{width:100%;min-width:0;overflow-x:auto;border:1px solid var(--skivo-border);border-radius:var(--radius-lg)}.curriculum-table-scroll table{width:100%;min-width:560px;border-collapse:collapse;background:#fff}.curriculum-table-scroll th,.curriculum-table-scroll td{padding:11px 13px;border-bottom:1px solid var(--skivo-border);text-align:left;vertical-align:top}.curriculum-table-scroll th{background:var(--skivo-surface-soft);color:var(--skivo-text)}.curriculum-definition-list{display:grid;gap:12px;margin:0}.curriculum-definition-list>div{display:grid;grid-template-columns:minmax(120px,.3fr) minmax(0,1fr);gap:14px;padding-bottom:12px;border-bottom:1px solid var(--skivo-border)}.curriculum-definition-list dt{font-weight:780;color:var(--skivo-text)}.curriculum-definition-list dd{min-width:0;margin:0}.curriculum-source-list a,.curriculum-lesson-section a{display:inline-flex;align-items:baseline;gap:5px;color:var(--skivo-info);text-decoration:underline;text-underline-offset:3px}.curriculum-lesson-section--error{background:#fffaeb}.curriculum-homework-submit,.curriculum-feedback-card,.curriculum-generation-state{display:grid;gap:14px}.curriculum-feedback-card label{display:grid;gap:6px;color:var(--skivo-text-secondary);font-size:13px;font-weight:720}.curriculum-lesson-navigation{display:flex;align-items:center;justify-content:space-between;gap:14px}.curriculum-mentor-panel{position:sticky;top:24px;display:grid;gap:16px;max-height:calc(100vh - 48px);overflow:auto;padding:20px;border:1px solid var(--skivo-border);border-radius:var(--radius-xl);background:var(--skivo-surface);box-shadow:var(--shadow-md)}.curriculum-mentor-panel__header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.curriculum-mentor-panel__header h2{margin:0}.curriculum-mentor-answer{padding:14px;border-radius:var(--radius-lg);background:var(--skivo-surface-soft);white-space:pre-wrap}@media(max-width:1100px){.curriculum-lesson-page.mentor-open{grid-template-columns:minmax(0,1fr)}.curriculum-mentor-panel{position:fixed;z-index:55;inset:auto 16px 16px;max-height:min(76vh,720px)}}@media(max-width:760px){.curriculum-course-grid,.curriculum-lesson-summary{grid-template-columns:minmax(0,1fr)}.curriculum-course-card{min-height:0}.curriculum-level-actions{grid-template-columns:minmax(0,1fr)}.curriculum-level-actions .btn,.curriculum-lesson-topbar .btn,.curriculum-lesson-navigation .btn{width:100%}.curriculum-lesson-topbar,.curriculum-lesson-navigation{align-items:stretch;flex-direction:column}.curriculum-lesson-topbar__actions,.curriculum-lesson-navigation .button-row{display:grid;grid-template-columns:minmax(0,1fr)}.curriculum-lesson-header,.curriculum-lesson-section{padding:22px 18px}.curriculum-lesson-header h1{font-size:clamp(2rem,10vw,3rem)}.curriculum-definition-list>div{grid-template-columns:minmax(0,1fr);gap:4px}.curriculum-mentor-panel{inset:auto 8px 8px;max-height:82vh}}.last\:border-b-0:last-child{border-bottom-width:0px}@media(min-width:640px){.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sm\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(min-width:768px){.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.md\:grid-cols-\[1fr_auto\]{grid-template-columns:1fr auto}.md\:grid-cols-\[auto_1fr_auto\]{grid-template-columns:auto 1fr auto}.md\:flex-row{flex-direction:row}.md\:items-start{align-items:flex-start}.md\:items-center{align-items:center}.md\:justify-end{justify-content:flex-end}.md\:justify-between{justify-content:space-between}.md\:text-4xl{font-size:2.25rem;line-height:2.5rem}}@media(min-width:1024px){.lg\:grid-cols-\[1fr_auto\]{grid-template-columns:1fr auto}.lg\:items-center{align-items:center}.lg\:justify-end{justify-content:flex-end}}@media(min-width:1280px){.xl\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.xl\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}}@font-face{font-family:Bricolage Grotesque;src:url(/fonts/bricolage-grotesque-500.ttf) format("truetype");font-weight:400 600;font-display:swap}@font-face{font-family:DM Sans;src:url(/fonts/dm-sans-400.ttf) format("truetype");font-weight:400;font-display:swap}@font-face{font-family:DM Sans;src:url(/fonts/dm-sans-700.ttf) format("truetype");font-weight:600 800;font-display:swap}html.ui-v3{--v3-paper: #f7f6f2;--v3-paper-strong: #eeede7;--v3-ink: #10100f;--v3-muted: #686862;--v3-line: #d9d8d2;--v3-lime: #d8ff4f;--v3-blue: #3157f6;--v3-dark: #171815;--v3-danger: #ba352d;--v3-success: #23734a;color:var(--v3-ink);background:var(--v3-paper);font-family:DM Sans,sans-serif;text-rendering:optimizeLegibility}.ui-v3 body,.ui-v3 #root,.ui-v3 .bg-skivo-bg{min-height:100%;color:var(--v3-ink);background:radial-gradient(circle at 82% 4%,rgba(216,255,79,.32),transparent 24rem),linear-gradient(145deg,#faf9f5 0%,var(--v3-paper) 52%,#efeee8 100%)}.ui-v3 h1,.ui-v3 h2,.ui-v3 h3,.ui-v3 .brand-wordmark,.ui-v3 .admin-brand{font-family:Bricolage Grotesque,DM Sans,sans-serif;color:var(--v3-ink);font-weight:500;letter-spacing:-.045em}.ui-v3 h1{line-height:.98}.ui-v3 h2,.ui-v3 h3{line-height:1.04}.ui-v3 :where(a,button,input,select,textarea,[tabindex]):focus-visible{outline:3px solid var(--v3-blue);outline-offset:3px}.ui-v3 .skip-link{position:fixed;z-index:200;top:12px;left:12px;padding:12px 16px;color:#fff;background:var(--v3-dark);border-radius:7px;transform:translateY(-150%)}.ui-v3 .skip-link:focus{transform:translateY(0)}.ui-v3 .app-shell{min-height:100vh;background:transparent}.ui-v3 .sidebar,.ui-v3 .admin-sidebar{color:var(--v3-ink);background:#f7f6f2f0;border-color:var(--v3-line);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.ui-v3 .brand-mark,.ui-v3 .admin-brand-mark{color:var(--v3-lime);background:var(--v3-dark);border-radius:50%;box-shadow:none}.ui-v3 .nav-link,.ui-v3 .admin-sidebar-link,.ui-v3 .admin-mobile-nav-link{min-height:44px;color:#4c4c47;border-radius:7px}.ui-v3 .nav-link:hover,.ui-v3 .admin-sidebar-link:hover{background:var(--v3-paper-strong)}.ui-v3 .nav-link-active,.ui-v3 .admin-sidebar-link.active,.ui-v3 .admin-mobile-nav-link.active{color:var(--v3-ink);background:var(--v3-lime);box-shadow:inset 0 0 0 1px #10100f24}.ui-v3 .page,.ui-v3 .admin-main{width:min(100%,1440px);padding:clamp(24px,4vw,64px)}.ui-v3 .stack{gap:clamp(22px,3vw,40px)}.ui-v3 .page-header{align-items:end;padding-bottom:clamp(18px,2vw,28px);border-bottom:1px solid var(--v3-line)}.ui-v3 .page-header h1,.ui-v3 .admin-page-header h1{max-width:16ch;font-size:clamp(42px,5vw,72px)}.ui-v3 .page-header p,.ui-v3 .section-header p,.ui-v3 .muted{color:var(--v3-muted)}.ui-v3 .eyebrow{color:#77766f;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.ui-v3 .card,.ui-v3 .admin-section-card,.ui-v3 .admin-metric-card{background:#fffffcdb;border:1px solid var(--v3-line);border-radius:12px;box-shadow:0 18px 44px #10100f0e}.ui-v3 .card{padding:clamp(20px,2.4vw,34px)}.ui-v3 .dashboard-hero-card{position:relative;color:#fff;background:var(--v3-dark);border-color:var(--v3-dark);overflow:clip}.ui-v3 .dashboard-hero-card:after{content:"S";position:absolute;right:-.08em;bottom:-.32em;color:#d8ff4f17;font:700 clamp(180px,22vw,340px) / .8 "Bricolage Grotesque",sans-serif;pointer-events:none}.ui-v3 .dashboard-hero-card :where(h2,strong){color:#fff}.ui-v3 .dashboard-hero-card p,.ui-v3 .dashboard-hero-card .muted{color:#e5e3da}.ui-v3 .dashboard-hero-card .eyebrow{color:var(--v3-lime)}.ui-v3 .btn{min-height:44px;padding:12px 18px;color:var(--v3-ink);background:transparent;border:1px solid #b9b8b1;border-radius:7px;font-weight:700;box-shadow:none;transition:transform .16s ease,background .16s ease,border-color .16s ease}.ui-v3 .btn:hover{transform:translateY(-1px);border-color:var(--v3-ink)}.ui-v3 .btn-primary{color:#fff;background:var(--v3-blue);border-color:var(--v3-blue);box-shadow:0 10px 25px #3157f638}.ui-v3 .btn-secondary{background:#fff}.ui-v3 .btn-danger{color:#fff;background:var(--v3-danger);border-color:var(--v3-danger)}.ui-v3 .field,.ui-v3 .admin-select{min-height:46px;color:var(--v3-ink);background:#fff;border:1px solid #c8c7c0;border-radius:7px}.ui-v3 .course-grid{gap:18px}.ui-v3 .course-card{min-height:250px}.ui-v3 .course-card:hover{transform:translateY(-3px) rotate(-.15deg);border-color:#a5a49d;box-shadow:0 24px 52px #10100f1a}.ui-v3 .course-card-action{color:var(--v3-blue);font-weight:700}.ui-v3 .progress-track{height:8px;background:#deddd6}.ui-v3 .progress-fill{background:var(--v3-blue)}.ui-v3 .badge-accent{color:var(--v3-ink);background:var(--v3-lime)}.ui-v3 .badge-success{color:#fff;background:var(--v3-success)}.ui-v3 .badge-warning{color:var(--v3-ink);background:#ffd36b}.ui-v3 .badge-danger{color:#fff;background:var(--v3-danger)}.ui-v3 .loading-state,.ui-v3 .empty-state{min-height:132px}.ui-v3 .loading-state>span{border-top-color:var(--v3-blue)}.ui-v3 .route-state-page{width:min(720px,calc(100% - 40px));min-height:100vh;margin:0 auto;display:grid;place-content:center;justify-items:start;gap:18px}.ui-v3 .route-state-page h1{font-size:clamp(48px,8vw,92px)}.ui-v3 .route-state-page p:not(.eyebrow){max-width:52ch;color:var(--v3-muted);font-size:18px}.ui-v3 .artifact-preview,.ui-v3 pre{max-width:100%;padding:18px;overflow:auto;color:#f6f5ef;background:var(--v3-dark);border-radius:8px}.ui-v3 .dialog-backdrop{position:fixed;z-index:300;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;padding:20px;background:#10100f94}.ui-v3 .dialog-panel{width:min(560px,100%);max-height:min(760px,calc(100vh - 40px));padding:24px;overflow:auto;background:var(--v3-paper);border:1px solid var(--v3-line);border-radius:12px;box-shadow:0 32px 80px #00000040}.ui-v3 .dialog-heading,.ui-v3 .dialog-actions,.ui-v3 .pagination{display:flex;align-items:center;justify-content:space-between;gap:14px}.ui-v3 .dialog-actions{justify-content:flex-end;margin-top:24px}.ui-v3 .drawer-layer .dialog-backdrop{place-items:stretch end;padding:0}.ui-v3 .drawer-layer .dialog-panel{width:min(440px,100%);max-height:100vh;border-radius:12px 0 0 12px}.ui-v3 .tabs{display:flex;gap:6px;padding:4px;background:var(--v3-paper-strong);border-radius:9px}.ui-v3 .tabs button{min-height:40px;padding:8px 14px;border-radius:7px}.ui-v3 .tabs button[aria-selected=true]{background:#fff;box-shadow:0 2px 8px #10100f14}.ui-v3 .table-scroll{max-width:100%;overflow:auto}.ui-v3 .data-table{width:100%;border-collapse:collapse}.ui-v3 .data-table caption{text-align:left;font-weight:700;margin-bottom:10px}.ui-v3 .data-table :where(th,td){padding:12px;text-align:left;border-bottom:1px solid var(--v3-line)}@media(max-width:760px){.ui-v3 .page,.ui-v3 .admin-main{padding:22px 16px 96px}.ui-v3 .page-header{align-items:start}.ui-v3 .page-header h1,.ui-v3 .admin-page-header h1{font-size:clamp(38px,13vw,54px)}.ui-v3 .card{padding:20px}.ui-v3 .btn,.ui-v3 .icon-button,.ui-v3 .nav-link,.ui-v3 .admin-mobile-nav-link{min-height:44px}.ui-v3 .dashboard-hero-card:after{right:-40px;opacity:.75}.ui-v3 .dialog-actions,.ui-v3 .pagination{align-items:stretch;flex-direction:column}.ui-v3 .dialog-actions .btn,.ui-v3 .pagination .btn{width:100%}}@media(prefers-reduced-motion:reduce){.ui-v3 *,.ui-v3 *:before,.ui-v3 *:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}