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auto}.betamastery-rail-item{min-height:var(--betamastery-target);border-radius:var(--betamastery-r-sm);color:var(--betamastery-muted);font-size:var(--betamastery-fs-body);white-space:nowrap;align-items:center;gap:12px;margin-bottom:3px;padding:10px 12px;font-weight:500;text-decoration:none;transition:background .15s,color .15s;display:flex;position:relative}.betamastery-rail-item:hover{background:var(--betamastery-wash);color:var(--betamastery-ink);text-decoration:none}.betamastery-rail-item.active{background:var(--betamastery-accent-soft);color:var(--betamastery-on-accent-soft);font-weight:600}.betamastery-rail-item svg{flex-shrink:0}.betamastery-rail-label{max-width:160px;transition:opacity .18s,max-width .22s;overflow:hidden}.betamastery-rail.collapsed .betamastery-rail-item{justify-content:center;gap:0}.betamastery-rail-badge{background:var(--betamastery-warm);color:#1a1204;font-size:var(--betamastery-fs-caption);border-radius:9px;justify-content:center;align-items:center;min-width:18px;height:18px;margin-left:auto;padding:0 5px;font-weight:700;display:inline-flex}.betamastery-rail.collapsed .betamastery-rail-badge{min-width:15px;height:15px;font-size:var(--betamastery-fs-caption);margin:0;position:absolute;top:5px;right:8px}.betamastery-rail-foot{border-top:1px solid var(--betamastery-hairline);align-items:center;gap:6px;padding:10px 12px;display:flex}.betamastery-rail.collapsed .betamastery-rail-foot{flex-direction:column}.betamastery-avatar{width:32px;height:32px;font-size:var(--betamastery-fs-caption);color:#fff;background:var(--betamastery-accent-fill);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-weight:700;display:flex}.betamastery-main{margin-left:calc(var(--betamastery-rail-w) + 24px);min-height:100vh;transition:margin-left .22s}.betamastery-main.rail-collapsed{margin-left:calc(var(--betamastery-rail-w-collapsed) + 24px)}.betamastery-page-container{max-width:1200px;padding:28px 32px 64px}.betamastery-appbar{border-radius:var(--betamastery-r);z-index:30;align-items:center;gap:12px;margin:12px 12px 0;padding:10px 14px;display:none;position:sticky;top:12px}.betamastery-appbar-title{font-family:var(--betamastery-font-display);font-weight:700;font-size:var(--betamastery-fs-lead);flex:1}.betamastery-drawer-scrim{z-index:45;opacity:0;pointer-events:none;background:#080a1073;transition:opacity .2s;position:fixed;inset:0}.betamastery-drawer-scrim.open{opacity:1;pointer-events:auto}.betamastery-drawer{z-index:46;border-radius:var(--betamastery-r-lg)0 0 var(--betamastery-r-lg);flex-direction:column;width:min(320px,84vw);transition:transform .24s;display:flex;position:fixed;top:0;bottom:0;right:0;transform:translate(100%)}.betamastery-drawer.open{transform:translate(0)}@media (max-width:1023px){.betamastery-rail{display:none}.betamastery-main,.betamastery-main.rail-collapsed{margin-left:0}.betamastery-appbar{display:flex}.betamastery-page-container{padding:20px 16px 80px}}@media (min-width:1024px){.betamastery-drawer,.betamastery-drawer-scrim{display:none}}.betamastery-stat-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;display:grid}.betamastery-stat-value{font-family:var(--betamastery-font-display);font-size:var(--betamastery-fs-h2);letter-spacing:-.02em;font-variant-numeric:tabular-nums;font-weight:700}.betamastery-stat-label{font-size:var(--betamastery-fs-caption);text-transform:uppercase;letter-spacing:.03em;color:var(--betamastery-muted);margin-top:2px;font-weight:600}.betamastery-child-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;display:grid}.betamastery-child-card-head{align-items:center;gap:14px;margin-bottom:16px;display:flex}.betamastery-child-card-metrics{grid-template-columns:repeat(2,1fr);gap:12px;display:grid}.betamastery-child-login{flex-wrap:wrap;align-items:baseline;gap:6px;margin-top:2px;display:flex}.betamastery-child-login-label{font-size:var(--betamastery-fs-caption);color:var(--betamastery-muted)}.betamastery-child-login-name{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:var(--betamastery-fs-caption);color:var(--betamastery-ink);background:var(--betamastery-hairline);border-radius:var(--betamastery-r-sm);-webkit-user-select:all;user-select:all;word-break:break-all;padding:1px 7px;font-weight:600}.betamastery-metric{flex-direction:column;gap:1px;display:flex}.betamastery-metric-value{font-family:var(--betamastery-font-display);font-size:var(--betamastery-fs-lead);font-variant-numeric:tabular-nums;font-weight:700}.betamastery-metric-label{font-size:var(--betamastery-fs-caption);color:var(--betamastery-muted);text-transform:uppercase;letter-spacing:.02em;font-weight:600}.betamastery-alert-chip{border-radius:var(--betamastery-r-pill);font-size:var(--betamastery-fs-caption);cursor:pointer;border:1px solid #0000;align-items:center;gap:8px;padding:9px 15px;font-weight:600;text-decoration:none;display:inline-flex}.betamastery-alert-chip:hover{text-decoration:none}.betamastery-alert-chip-warn{background:var(--betamastery-warm-soft);color:var(--betamastery-on-warm-soft);border-color:color-mix(in srgb,var(--betamastery-warm)30%,transparent)}.betamastery-alert-chip-info{background:var(--betamastery-accent-soft);color:var(--betamastery-on-accent-soft);border-color:color-mix(in srgb,var(--betamastery-accent)30%,transparent)}.betamastery-needs-row{color:var(--betamastery-ink);font-size:var(--betamastery-fs-small);border-top:1px solid var(--betamastery-hairline);align-items:center;gap:10px;padding:10px 2px;font-weight:500;text-decoration:none;display:flex}.betamastery-needs-row:first-of-type{border-top:0}.betamastery-needs-row:hover{color:var(--betamastery-accent);text-decoration:none}.betamastery-needs-row svg:last-child{color:var(--betamastery-muted);flex-shrink:0;margin-left:auto}.betamastery-progress-track{background:var(--betamastery-wash);border-radius:4px;width:100%;height:8px;overflow:hidden}.betamastery-progress-fill{background:var(--betamastery-accent-fill);border-radius:4px;height:100%;transition:width .4s}.betamastery-progress-fill.met{background:var(--betamastery-success)}.betamastery-planner-scroll{-webkit-overflow-scrolling:touch;padding-bottom:4px;overflow-x:auto}.betamastery-planner{gap:16px;min-width:min-content;display:grid}.betamastery-planner-col-head{font-family:var(--betamastery-font-display);align-items:center;gap:8px;margin-bottom:12px;font-weight:700;display:flex}.betamastery-planner-row{border:1px solid var(--betamastery-hairline);border-radius:var(--betamastery-r-sm);background:var(--betamastery-wash);align-items:center;gap:8px;margin-bottom:6px;padding:9px 10px;display:flex}.betamastery-table{border-collapse:collapse;width:100%;font-size:var(--betamastery-fs-small)}.betamastery-table th{text-align:left;border-bottom:1px solid var(--betamastery-hairline-strong);font-size:var(--betamastery-fs-caption);text-transform:uppercase;letter-spacing:.03em;color:var(--betamastery-muted);padding:8px 12px}.betamastery-table td{border-bottom:1px solid var(--betamastery-hairline);padding:10px 12px}.betamastery-login-wrap{justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.betamastery-login-card{border-radius:var(--betamastery-r-lg);width:100%;max-width:400px;padding:40px 32px}.betamastery-login-logo{color:#fff;background:var(--betamastery-accent-fill);border-radius:16px;justify-content:center;align-items:center;width:56px;height:56px;margin:0 auto 16px;display:flex}.betamastery-login-title{text-align:center;font-family:var(--betamastery-font-display);font-size:var(--betamastery-fs-h2);color:var(--betamastery-accent-2);margin-bottom:4px;font-weight:700}.betamastery-login-title .betamastery-beta{color:var(--betamastery-accent)}.betamastery-login-subtitle{text-align:center;color:var(--betamastery-muted);font-size:var(--betamastery-fs-small);margin-bottom:26px}.betamastery-login-error{background:var(--betamastery-danger-soft);color:var(--betamastery-on-danger-soft);border-radius:var(--betamastery-r-sm);font-size:var(--betamastery-fs-body);text-align:center;margin-bottom:16px;padding:10px 14px}.theme-kid{min-height:100vh}.betamastery-kid-main{max-width:880px;min-height:100vh;margin:0 auto;padding:20px 18px 172px}.betamastery-kid-topbar{justify-content:flex-end;gap:6px;margin-bottom:4px;display:flex}.betamastery-kid-dock{z-index:50;padding:6px;padding-bottom:max(6px,env(safe-area-inset-bottom));border-radius:22px;flex-direction:column;max-width:calc(100vw - 16px);display:flex;position:fixed;bottom:12px;left:50%;overflow:hidden;transform:translate(-50%)}.betamastery-kid-dock-row{justify-content:center;gap:4px;display:flex}.betamastery-kid-dock-row+.betamastery-kid-dock-row{border-top:1px solid var(--betamastery-hairline);margin-top:5px;padding-top:5px}.betamastery-kid-shortcut{border-radius:var(--betamastery-r-pill);white-space:nowrap;min-width:0;color:var(--betamastery-muted);background:0 0;border:1px solid #0000;flex:1 1 0;justify-content:center;align-items:center;gap:6px;min-height:36px;padding:7px 10px;font-size:12.5px;font-weight:600;text-decoration:none;transition:background .15s,color .15s;display:flex}.betamastery-kid-shortcut:hover,.betamastery-kid-shortcut.active{background:var(--betamastery-wash);color:var(--betamastery-ink)}@media (max-width:460px){.betamastery-kid-shortcut{padding:7px 6px}.betamastery-kid-shortcut span{display:none}}.betamastery-kid-tabbar{justify-content:center;gap:4px;display:flex}@media (max-width:420px){.betamastery-kid-dock{width:calc(100vw - 16px)}.betamastery-kid-tabbar{gap:2px}.betamastery-kid-tab{flex:1 1 0;min-width:0;padding:8px 4px;font-size:12px}}.betamastery-kid-tab{min-width:56px;min-height:50px;color:var(--betamastery-muted);font-size:var(--betamastery-fs-caption);border-radius:var(--betamastery-r-pill);flex-direction:column;flex:1 1 0;align-items:center;gap:3px;padding:8px 10px;font-weight:600;text-decoration:none;transition:background .15s,color .15s;display:flex}.betamastery-kid-tab.active{color:var(--betamastery-on-accent-soft);background:var(--betamastery-accent-soft);box-shadow:0 0 16px var(--betamastery-accent-soft)}.betamastery-kid-tab:hover{text-decoration:none}.betamastery-kid-greeting{font-family:var(--betamastery-font-display);font-size:var(--betamastery-fs-h1);letter-spacing:-.02em;align-items:center;gap:10px;margin-bottom:4px;font-weight:700;display:flex}.betamastery-kid-sub{color:var(--betamastery-muted);font-size:var(--betamastery-fs-body);margin-bottom:22px}.betamastery-kid-hero{border-radius:var(--betamastery-r-lg);flex-wrap:wrap;align-items:center;gap:24px;margin-bottom:22px;padding:24px;display:flex}.betamastery-kid-hero-stats{flex-wrap:wrap;gap:22px;display:flex}.betamastery-kid-hero-stat{flex-direction:column;gap:3px;display:flex}.betamastery-kid-hero-stat-value{font-family:var(--betamastery-font-display);font-size:var(--betamastery-fs-h2);align-items:center;gap:7px;font-weight:700;line-height:1;display:flex}.betamastery-kid-hero-stat-label{font-size:var(--betamastery-fs-caption);color:var(--betamastery-muted);text-transform:uppercase;letter-spacing:.04em;font-weight:600}.betamastery-hero-star{color:var(--betamastery-warm)}.betamastery-hero-flame{color:var(--betamastery-brass)}.betamastery-hero-medal{color:var(--betamastery-accent-2)}.betamastery-quest-list{flex-direction:column;gap:12px;display:flex}.betamastery-quest-card{border-radius:var(--betamastery-r-lg);cursor:pointer;text-align:left;width:100%;color:inherit;align-items:center;gap:16px;padding:16px 18px;font-family:inherit;transition:transform .12s,box-shadow .15s,border-color .15s;display:flex}.betamastery-quest-card:hover{box-shadow:var(--betamastery-shadow-lg);border-color:color-mix(in srgb,var(--betamastery-accent)45%,transparent);transform:translateY(-2px)}.betamastery-quest-card.done{opacity:.65}.betamastery-quest-emoji{background:var(--betamastery-accent-soft);width:48px;height:48px;color:var(--betamastery-on-accent-soft);border-radius:14px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.betamastery-quest-body{flex:1;min-width:0}.betamastery-quest-title{font-weight:700;font-size:var(--betamastery-fs-lead);display:block}.betamastery-quest-meta{font-size:var(--betamastery-fs-small);color:var(--betamastery-muted);margin-top:2px;display:block}.betamastery-quest-arrow{color:var(--betamastery-accent);flex-shrink:0;display:inline-flex}.betamastery-quest-done{color:var(--betamastery-success);flex-shrink:0;display:inline-flex}.betamastery-quest-card.compact{border-radius:var(--betamastery-r);gap:12px;padding:10px 14px}.betamastery-quest-card.compact .betamastery-quest-emoji{border-radius:10px;width:36px;height:36px}.betamastery-quest-card.compact .betamastery-quest-title{font-size:var(--betamastery-fs-small);font-weight:600}.betamastery-quest-card.compact .betamastery-quest-meta{font-size:var(--betamastery-fs-caption);margin-top:0}.betamastery-celebrate{border-radius:var(--betamastery-r-lg);font-family:var(--betamastery-font-display);font-size:var(--betamastery-fs-lead);align-items:center;gap:12px;margin-bottom:20px;padding:18px 22px;font-weight:700;display:flex}.betamastery-celebrate-icon{color:#fff;background:var(--betamastery-accent-fill);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;display:flex}.betamastery-accent-text,.betamastery-gradient-text{color:var(--betamastery-accent-fill)}.betamastery-kid-section-title{font-family:var(--betamastery-font-display);font-size:var(--betamastery-fs-h3);align-items:center;gap:8px;margin:26px 0 12px;font-weight:700;display:flex}.betamastery-orb{background:var(--betamastery-glass);border:1px solid var(--betamastery-glass-border);box-shadow:var(--betamastery-shadow),inset 0 1px 0 #ffffff4d;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex;position:relative}@supports (color:color-mix(in srgb, red, blue)){.betamastery-orb{background:var(--betamastery-glass-solid)}}.betamastery-orb-inner{text-align:center;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.betamastery-orb-value{font-family:var(--betamastery-font-display);font-weight:700;line-height:1}.betamastery-orb-label{font-size:var(--betamastery-fs-caption);color:var(--betamastery-muted)}.betamastery-player{max-width:760px;min-height:100vh;margin:0 auto;padding:16px 16px 48px}.betamastery-player-top{justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;display:flex}.betamastery-player-subject{background:var(--betamastery-accent-soft);width:40px;height:40px;color:var(--betamastery-on-accent-soft);border-radius:12px;justify-content:center;align-items:center;display:flex}.betamastery-player-timer{border-radius:var(--betamastery-r-pill);background:var(--betamastery-accent-soft);color:var(--betamastery-on-accent-soft);font-size:var(--betamastery-fs-caption);font-variant-numeric:tabular-nums;align-items:center;gap:6px;padding:7px 13px;font-weight:700;display:inline-flex}.betamastery-player-timer.paused{background:var(--betamastery-warm-soft);color:var(--betamastery-on-warm-soft)}.betamastery-reading-pane{border-radius:var(--betamastery-r);line-height:1.8;font-size:var(--betamastery-fs-body);margin-bottom:18px;padding:18px 20px}.betamastery-reading-pane p{margin-bottom:.8em}.betamastery-reading-pane p:last-child{margin-bottom:0}.betamastery-collapse-toggle{color:var(--betamastery-accent);cursor:pointer;font-family:inherit;font-weight:700;font-size:var(--betamastery-fs-small);background:0 0;border:none;align-items:center;gap:6px;padding:4px 0;display:inline-flex}.betamastery-dots{flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:20px;display:flex}.betamastery-dot{background:var(--betamastery-hairline-strong);border-radius:50%;width:11px;height:11px;transition:transform .15s,background .15s}.betamastery-dot.active{background:var(--betamastery-accent);transform:scale(1.35)}.betamastery-dot.answered{background:var(--betamastery-accent)}.betamastery-dot.correct{background:var(--betamastery-success)}.betamastery-dot.incorrect{background:var(--betamastery-danger)}.betamastery-question{border-radius:var(--betamastery-r-lg);margin-bottom:18px;padding:24px}.betamastery-question-prompt{font-family:var(--betamastery-font-display);font-size:var(--betamastery-fs-h3);margin-bottom:18px;font-weight:600;line-height:1.4}.betamastery-options{flex-direction:column;gap:12px;display:flex}.betamastery-option{border:1px solid var(--betamastery-hairline-strong);border-radius:var(--betamastery-r);background:var(--betamastery-glass);cursor:pointer;font-size:var(--betamastery-fs-body);color:var(--betamastery-ink);text-align:left;align-items:center;gap:12px;width:100%;min-height:56px;padding:15px 18px;font-family:inherit;font-weight:500;transition:border-color .12s,background .12s,color .12s;display:flex}.betamastery-option:hover:not(:disabled){border-color:var(--betamastery-on-accent-soft);background:var(--betamastery-accent-soft)}.betamastery-option.selected{border-color:var(--betamastery-on-accent-soft);background:var(--betamastery-accent-soft);color:var(--betamastery-on-accent-soft)}.betamastery-option.correct{border-color:var(--betamastery-on-success-soft);background:var(--betamastery-success-soft);color:var(--betamastery-on-success-soft)}.betamastery-option.incorrect{border-color:var(--betamastery-on-danger-soft);background:var(--betamastery-danger-soft);color:var(--betamastery-on-danger-soft)}.betamastery-option-key{background:var(--betamastery-wash);width:30px;height:30px;color:var(--betamastery-muted);font-weight:800;font-size:var(--betamastery-fs-small);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.betamastery-player-nav{justify-content:space-between;gap:12px;margin-top:8px;display:flex}.betamastery-result-hero{text-align:center;border-radius:var(--betamastery-r-lg);margin-bottom:20px;padding:28px 20px}.betamastery-result-hero-icon{color:#fff;background:var(--betamastery-accent-fill);border-radius:50%;justify-content:center;align-items:center;width:60px;height:60px;margin:0 auto 8px;display:flex}.betamastery-result-score{font-family:var(--betamastery-font-display);font-size:var(--betamastery-fs-display);margin:6px 0;font-weight:700;line-height:1}.betamastery-result-points{font-size:var(--betamastery-fs-lead);font-weight:700}.betamastery-result-q{border-radius:var(--betamastery-r);border:1px solid var(--betamastery-hairline);margin-bottom:12px;padding:16px 18px}.betamastery-result-q.correct{border-color:color-mix(in srgb,var(--betamastery-success)45%,transparent)}.betamastery-result-q.incorrect{border-color:color-mix(in srgb,var(--betamastery-danger)45%,transparent)}.betamastery-result-q.pending{border-color:color-mix(in srgb,var(--betamastery-warm)45%,transparent)}.betamastery-result-explanation{font-size:var(--betamastery-fs-small);color:var(--betamastery-muted);border-top:1px solid var(--betamastery-hairline);margin-top:8px;padding-top:8px}.betamastery-balance-hero{text-align:center;border-radius:var(--betamastery-r-lg);margin-bottom:22px;padding:26px}.betamastery-balance-value{font-family:var(--betamastery-font-display);font-size:var(--betamastery-fs-display);justify-content:center;align-items:center;gap:10px;font-weight:700;line-height:1;display:flex}.betamastery-balance-label{font-size:var(--betamastery-fs-small);color:var(--betamastery-muted);margin-top:4px;font-weight:600}.betamastery-reward-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;display:grid}.betamastery-reward-card{border-radius:var(--betamastery-r-lg);text-align:center;flex-direction:column;gap:8px;padding:18px;display:flex}.betamastery-reward-title{font-weight:700;font-size:var(--betamastery-fs-body)}.betamastery-reward-cost{font-family:var(--betamastery-font-display);font-size:var(--betamastery-fs-h3);color:var(--betamastery-warm);font-weight:700}.betamastery-flash-wrap{max-width:560px;margin:0 auto}.betamastery-flash-progress{margin-bottom:20px}.betamastery-flash-progress-top{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.betamastery-flash-progress-label{font-weight:700;font-size:var(--betamastery-fs-small)}.betamastery-flash-stage{perspective:1400px;margin-bottom:20px}.betamastery-flash-card{width:100%;min-height:320px;transform-style:preserve-3d;cursor:pointer;transition:transform .5s cubic-bezier(.4,.2,.2,1);position:relative}.betamastery-flash-card.flipped{transform:rotateY(180deg)}.betamastery-flash-card.entering{animation:.28s betamastery-flash-in}@keyframes betamastery-flash-in{0%{opacity:0;transform:translate(28px)}to{opacity:1;transform:translate(0)}}.betamastery-flash-face{backface-visibility:hidden;border-radius:var(--betamastery-r-lg);text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:14px;padding:32px 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