:root{--color-bg: #F7F1E4;--color-bg-gradient-start: #FBF7F0;--color-bg-gradient-mid: #F5EDE2;--color-bg-gradient-end: #EDE6DA;--color-bg-gradient-bottom: #E8E2D8;--color-bg-orb-top: rgba(43, 64, 97, .07);--color-bg-orb-bottom: rgba(43, 64, 97, .05);--color-text-primary: #2B2832;--color-text-secondary: #5A5568;--color-primary: #C9962E;--color-tech-accent: #2B4061;--color-error: #B33A3A;--color-success: #3D6B62;--color-white: #FFFFFF;--color-deep-plum: #5A3B5D;--color-surface: rgba(255, 255, 255, .85);--color-surface-elevated: #FFFFFF;--glass-blur: 24px;--glass-saturate: 125%;--glass-bg: rgba(255, 255, 255, .68);--glass-bg-elevated: rgba(255, 255, 255, .88);--glass-border: 1px solid var(--color-border-default);--glass-border-strong: 1px solid rgba(90, 58, 93, .14);--glass-shadow: var(--clay-shadow);--glass-edge: inset 0 1px 0 0 rgba(255, 255, 255, .4);--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 12px;--spacing-lg: 16px;--spacing-xl: 24px;--spacing-xxl: 32px;--spacing-xxxl: 48px;--radius-sm: 12px;--radius-md: 18px;--radius-lg: 24px;--radius-xl: 28px;--radius-pill: 999px;--clay-shadow: 0 2px 8px rgba(90, 58, 93, .06), 0 8px 24px rgba(90, 58, 93, .08);--clay-shadow-hover: 0 4px 12px rgba(90, 58, 93, .08), 0 12px 32px rgba(90, 58, 93, .1);--clay-shadow-button: 0 3px 10px rgba(201, 150, 46, .25);--font-sans: "Nunito", "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;--text-title: 22px;--text-title-weight: 700;--text-headline: 1.5rem;--text-body: 16px;--text-body-sm: 14px;--text-caption: 12px;--text-chart-tick: 11px;--dashboard-max-width: 560px;--min-tap-target: 48px;--progress-track-bg: rgba(90, 58, 93, .12);--progress-fill-low: var(--color-error);--progress-fill-mid: var(--color-primary);--progress-fill-high: var(--color-success);--progress-height: 8px;--color-border-subtle: rgba(90, 58, 93, .06);--color-border-default: rgba(90, 58, 93, .08);--color-overlay: rgba(0, 0, 0, .4);--color-shadow-overlay: rgba(0, 0, 0, .12);--badge-success-bg: rgba(61, 107, 98, .2);--badge-error-bg: rgba(179, 58, 58, .2);--chart-tooltip-border: var(--glass-border-strong);--band-weak-bg: rgba(186, 62, 62, .15);--band-strong-bg: rgba(74, 124, 114, .2);--band-ok-bg: var(--progress-track-bg)}.glass{background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));border:var(--glass-border)}.glass-elevated{background:var(--glass-bg-elevated);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));border:var(--glass-border);box-shadow:var(--glass-shadow)}.glass-card{background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));border:1px solid var(--color-border-subtle);border-radius:var(--radius-md);box-shadow:var(--glass-edge),var(--clay-shadow)}.glass-card-elevated{background:var(--glass-bg-elevated);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));border:1px solid var(--color-border-default);border-radius:var(--radius-md);box-shadow:var(--glass-edge),var(--clay-shadow)}.completion-meter{height:var(--progress-height);background:var(--progress-track-bg);border-radius:var(--radius-pill);overflow:hidden}.completion-meter__fill{height:100%;width:var(--progress-pct, 0%);background:var(--progress-fill, var(--color-primary));border-radius:var(--radius-pill);transition:width .35s ease}.dashboard-page{padding:var(--spacing-lg);max-width:var(--dashboard-max-width);margin:0 auto}.dashboard-card{padding:var(--spacing-lg);margin-bottom:var(--spacing-lg)}.dashboard-card__title{margin:0 0 var(--spacing-sm);font-size:var(--text-body);font-weight:700;color:var(--color-text-primary)}.dashboard-headline{font-size:var(--text-headline);font-weight:700;color:var(--color-text-primary)}.dashboard-row{display:flex;align-items:center;gap:var(--spacing-sm)}.dashboard-caption{font-size:var(--text-caption);color:var(--color-text-secondary)}.dashboard-body-sm{font-size:var(--text-body-sm);color:var(--color-text-secondary)}.dashboard-greeting{margin:0 0 var(--spacing-xs);font-size:var(--text-body-sm);color:var(--color-text-secondary)}.dashboard-title{margin:0 0 var(--spacing-lg);font-size:var(--text-title);font-weight:800;color:var(--color-text-primary)}.dashboard-quick-link{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);text-decoration:none;color:inherit;border-radius:var(--radius-sm)}.dashboard-badge{padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-pill);font-size:var(--text-caption);font-weight:600}.dashboard-badge--success{background:var(--badge-success-bg);color:var(--color-success)}.dashboard-badge--error{background:var(--badge-error-bg);color:var(--color-error)}.glass-nav{background:var(--glass-bg-elevated);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));border:var(--glass-border);box-shadow:var(--glass-shadow)}.nav-bar{flex-shrink:0;display:flex;align-items:center;justify-content:center;gap:var(--spacing-xs);padding:var(--spacing-sm);margin:0 var(--spacing-lg) var(--spacing-lg);border-radius:var(--radius-xl);background:var(--glass-bg-elevated);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));border:var(--glass-border);box-shadow:var(--clay-shadow);position:relative;z-index:10}.nav-bar__item{flex:1;display:flex;align-items:center;justify-content:center;min-height:44px;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-pill);font-size:15px;font-weight:600;letter-spacing:.02em;color:var(--color-text-secondary);text-decoration:none;transition:color .2s ease,background .25s ease,transform .2s ease}.nav-bar__item:hover{color:var(--color-text-primary)}.nav-bar__item.active{color:var(--color-primary);background:#c9962e26;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.nav-bar__item:active{transform:scale(.98)}.glass-nav-item{color:var(--color-text-secondary);text-decoration:none;font-weight:600;border-radius:var(--radius-sm);min-height:var(--min-tap-target);display:flex;align-items:center;justify-content:center;flex:1;position:relative;z-index:1}.glass-nav-item:hover{color:var(--color-text-primary)}.glass-nav-item.active{color:var(--color-primary)}.glass-input{background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));border:var(--glass-border-strong);border-radius:var(--radius-sm);color:var(--color-text-primary);width:100%;padding:var(--spacing-md);box-sizing:border-box}.glass-input::placeholder{color:var(--color-text-secondary);opacity:.8}.glass-btn{min-height:var(--min-tap-target);padding:var(--spacing-md) var(--spacing-xl);border:var(--glass-border-strong);border-radius:var(--radius-md);font-weight:600;cursor:pointer;background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));color:var(--color-text-primary)}.glass-btn:hover{background:var(--glass-bg-elevated)}.glass-btn-primary{background:var(--color-primary);color:var(--color-deep-plum);border:none;font-weight:700;backdrop-filter:none;-webkit-backdrop-filter:none}.glass-btn-primary:hover{filter:brightness(1.06);box-shadow:var(--clay-shadow-button)}.glass-btn-secondary{background:var(--color-tech-accent);color:var(--color-white);border:none;backdrop-filter:none;-webkit-backdrop-filter:none}.glass-btn-secondary:hover{filter:brightness(1.1)}.glass-btn:disabled,.glass-btn-primary:disabled{opacity:.5;cursor:not-allowed;filter:none}.glass-option{width:100%;text-align:left;padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-sm);cursor:pointer;min-height:var(--min-tap-target);font-size:var(--text-body);color:var(--color-text-primary);background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));border:2px solid transparent}.glass-option:hover{background:var(--glass-bg-elevated)}.glass-option--selected{background:var(--color-tech-accent);border-color:var(--color-primary);backdrop-filter:none;-webkit-backdrop-filter:none}.glass-option--correct{border-color:var(--color-success);background:#3d6b621f}.glass-option--wrong{border-color:var(--color-error);background:#b33a3a14}.glass-option:disabled{cursor:default}.glass-img{max-width:100%;height:auto;border-radius:var(--radius-sm);border:var(--glass-border)}.glass-skeleton{background:var(--color-border-subtle);border-radius:var(--radius-sm);border:var(--glass-border);animation:skeleton-pulse 1.2s ease-in-out infinite}.glass-skeleton-card{background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));border:var(--glass-border);border-radius:var(--radius-md);padding:var(--spacing-lg)}.glass-inline{background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));border:var(--glass-border);border-radius:var(--radius-sm)}.glass-card-link{display:block;padding:var(--spacing-xl);border-radius:var(--radius-md);text-decoration:none;color:var(--color-text-primary);margin-bottom:var(--spacing-lg);min-height:var(--min-tap-target);box-sizing:border-box;background:var(--glass-bg-elevated);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));border:var(--glass-border);box-shadow:var(--glass-shadow);transition:box-shadow .2s ease,transform .2s ease}.glass-card-link:hover{box-shadow:var(--clay-shadow-hover);transform:translateY(-2px)}.app-shell{min-height:100vh;display:flex;flex-direction:column;color:var(--color-text-primary)}.app-shell__header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-sm) var(--spacing-lg);border-bottom:1px solid var(--color-border-subtle);background:var(--glass-bg-elevated);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));box-shadow:var(--glass-edge);flex-shrink:0}.app-shell__logo-mark{height:40px;width:auto;object-fit:contain;flex-shrink:0}.app-shell__header-actions{display:flex;align-items:center;gap:var(--spacing-sm)}.app-shell__profile-link{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-sm);color:var(--color-text-secondary);text-decoration:none;font-weight:600;font-size:var(--text-body-sm);min-height:var(--min-tap-target);box-sizing:border-box}.app-shell__profile-link:hover{color:var(--color-text-primary);background:var(--color-border-subtle)}.app-shell__profile-link--active{color:var(--color-primary)}.app-shell__profile-icon{font-size:1.1rem}.app-shell__profile-label{display:none}@media (min-width: 600px){.app-shell__profile-label{display:inline}}.app-shell__body{flex:1;display:flex;min-height:0}.app-shell__sidebar{width:240px;flex-shrink:0;border-right:1px solid var(--color-border-default);background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-saturate));box-shadow:var(--glass-edge);overflow-y:auto}.app-shell__menu-btn{display:none;align-items:center;justify-content:center;width:var(--min-tap-target);height:var(--min-tap-target);padding:0;border:none;background:none;border-radius:var(--radius-sm);font-size:1.25rem;color:var(--color-text-primary);cursor:pointer}.app-shell__menu-btn:hover{background:var(--color-border-default)}@media (max-width: 799px){.app-shell__menu-btn{display:flex}.app-shell__sidebar{position:fixed;top:0;left:0;bottom:0;z-index:100;width:240px;transform:translate(-100%);transition:transform .2s ease;box-shadow:none}.app-shell__sidebar--open{transform:translate(0);box-shadow:4px 0 24px var(--color-shadow-overlay)}}.app-shell__overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:var(--color-overlay);z-index:99}@media (max-width: 799px){.app-shell__overlay{display:block}}.app-shell__nav{padding:var(--spacing-md) var(--spacing-sm);display:flex;flex-direction:column;gap:2px}.app-shell__nav-item{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-md);border-radius:10px;color:var(--color-text-secondary);text-decoration:none;font-weight:500;font-size:var(--text-body-sm);min-height:44px;box-sizing:border-box;border:none;background:none;width:100%;cursor:pointer;text-align:left;font-family:inherit}.app-shell__nav-item:hover{color:var(--color-text-primary);background:var(--color-border-subtle)}.app-shell__nav-item--active{color:var(--color-primary);background:#c9962e1f}.app-shell__nav-item--expandable{justify-content:space-between}.app-shell__nav-icon{font-size:1.1rem;flex-shrink:0}.app-shell__nav-chevron{font-size:.75rem;color:var(--color-text-secondary)}.app-shell__nav-section{display:flex;flex-direction:column;gap:2px}.app-shell__nav-sublist{padding-left:var(--spacing-lg);display:flex;flex-direction:column;gap:2px}.app-shell__nav-subitem{padding:var(--spacing-xs) var(--spacing-md);border-radius:8px;color:var(--color-text-secondary);text-decoration:none;font-size:var(--text-caption);min-height:36px;display:flex;align-items:center;box-sizing:border-box}.app-shell__nav-subitem:hover{color:var(--color-text-primary);background:var(--color-border-subtle)}.app-shell__nav-subitem--active{color:var(--color-primary);font-weight:600}.app-shell__main{flex:1;min-height:0;overflow:auto;padding:var(--spacing-md) var(--spacing-lg) var(--spacing-lg)}@keyframes skeleton-pulse{0%,to{opacity:.4}50%{opacity:.8}}.login-screen{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-xl);color:var(--color-text-primary)}.login-screen__logo{width:min(280px,85vw);height:auto;object-fit:contain;margin-bottom:var(--spacing-lg)}.login-screen__title{font-size:clamp(22px,5vw,28px);font-weight:800;margin:0 0 var(--spacing-md);letter-spacing:-.02em}.login-screen__subtitle{color:var(--color-text-secondary);margin:0 0 var(--spacing-xl);text-align:center;font-size:var(--text-body)}.learn-hub{position:relative;padding:0 var(--spacing-lg) var(--spacing-lg);min-height:60vh;background-image:url(/logo.png?v=2);background-size:88% auto;background-position:center top;background-repeat:no-repeat}.learn-hub:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(to bottom,rgba(247,241,228,.75) 0%,rgba(247,241,228,.92) 40%,var(--color-bg) 100%);pointer-events:none}.learn-hub__content{position:relative;z-index:1;padding-top:var(--spacing-md)}:root{font-family:var(--font-sans);line-height:1.5;color:var(--color-text-primary);background-color:var(--color-bg)}*{box-sizing:border-box}body{margin:0;min-height:100vh;position:relative;background:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' 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