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#1e244740;color:var(--muted)}.ach-count{margin-left:8px;font-size:14px;font-weight:600;color:var(--muted)}.star-total{cursor:pointer;transition:transform .15s,box-shadow .15s}.star-total:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift)}.pack-tabs{display:flex;gap:10px;margin-bottom:26px;flex-wrap:wrap}.pack-tab{display:flex;align-items:center;gap:9px;padding:11px 18px;border-radius:999px;background:var(--card);border:1.5px solid var(--card-border);box-shadow:var(--shadow);font-weight:600;font-size:14.5px;transition:transform .13s,border-color .13s,box-shadow .13s}.pack-tab:hover{transform:translateY(-2px)}.pack-tab.active{border-color:var(--indigo);box-shadow:0 0 0 3px #6366f126,var(--shadow)}.pack-emoji{font-size:18px}.pack-solved{font-size:12.5px;color:var(--muted);font-weight:700;background:#64748b1a;padding:2px 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small{color:var(--muted);font-size:12.5px}.toast-stack{position:fixed;bottom:18px;left:50%;transform:translate(-50%);display:flex;flex-direction:column;gap:8px;z-index:60;pointer-events:none}.toast{display:flex;align-items:center;gap:12px;padding:12px 20px;border-radius:16px;background:#fff;border:1px solid var(--card-border);box-shadow:var(--shadow-lift);animation:riseUp .35s cubic-bezier(.34,1.56,.64,1)}@keyframes riseUp{0%{opacity:0;transform:translateY(16px) scale(.9)}to{opacity:1;transform:translateY(0) scale(1)}}.toast-emoji{font-size:24px}.toast strong{display:block;font-size:13.5px}.toast small{color:var(--muted);font-size:12.5px}.build-grid .build-cell{cursor:pointer;transition:transform .1s,box-shadow .1s;padding:0}.build-grid .build-cell:hover{transform:scale(1.06);z-index:1;box-shadow:0 0 0 2px var(--cyan)}.build-void{background:#1e24470a;border:1.5px dashed rgba(30,36,71,.1);border-radius:14px}.build-volt{pointer-events:none}.brush-panel{padding:16px;border-radius:18px;background:var(--card);border:1px solid var(--card-border);box-shadow:var(--shadow)}.brushes{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:10px}.brush{display:flex;flex-direction:column;align-items:center;gap:6px;padding:11px 6px;border-radius:13px;background:#fff;border:2px solid rgba(30,36,71,.07);font-size:12.5px;font-weight:600;color:var(--muted);transition:transform .12s,border-color .12s}.brush:hover{transform:translateY(-2px)}.brush.selected{border-color:var(--cyan);color:var(--ink);box-shadow:0 0 0 3px #06b6d424}.brush-swatch{width:26px;height:26px;border-radius:8px}.swatch-floor{background:#fff;border:1.5px solid rgba(30,36,71,.15)}.swatch-void{background:#1e24470f;border:1.5px dashed rgba(30,36,71,.2)}.swatch-block{background:linear-gradient(160deg,#dde3f0,#b9c2d8);box-shadow:0 2px 4px #1e244733}.swatch-pad{background:radial-gradient(circle,#22d3ee 30%,#22d3ee26 70%);border-radius:50%}.swatch-sensor{background:radial-gradient(circle,#a78bfa 30%,#a78bfa26 70%);border-radius:50%;border:1.5px dashed #8b5cf6}.swatch-start{background:linear-gradient(135deg,var(--volt-a, #818cf8),var(--volt-b, #22d3ee))}.brush-hint{margin-top:12px;font-size:13px;color:var(--muted);min-height:20px}.brush-clear{margin-top:12px;width:100%;justify-content:center;font-size:13.5px}.parent-zone{position:relative;z-index:1;max-width:1180px;margin:0 auto;padding:28px clamp(16px,4vw,40px) 60px}.parent-accent{color:var(--violet)!important}.pin-card{max-width:380px;margin:8vh auto 0;padding:34px 30px;border-radius:24px;background:#fff;border:1px solid var(--card-border);box-shadow:var(--shadow-lift);text-align:center;display:flex;flex-direction:column;gap:14px;align-items:center}.pin-sub{color:var(--muted);font-size:14px}.pin-input{font:inherit;font-size:30px;letter-spacing:.5em;text-align:center;width:190px;padding:10px 0 10px .5em;border-radius:14px;border:2px solid var(--card-border);background:var(--bg);color:var(--ink);outline:none}.pin-input:focus{border-color:var(--indigo)}.pin-error{color:var(--rose);font-size:13.5px;font-weight:600}.dashboard{display:flex;flex-direction:column;gap:18px}.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}.stat-card{display:flex;flex-direction:column;padding:18px 20px;border-radius:18px;background:var(--card);border:1px solid var(--card-border);box-shadow:var(--shadow)}.stat-value{font-size:32px;font-weight:700;line-height:1.1}.stat-label{font-size:13.5px;font-weight:600;margin-top:4px}.stat-sub{font-size:12px;color:var(--muted)}.dash-card{padding:20px 22px;border-radius:18px;background:var(--card);border:1px solid var(--card-border);box-shadow:var(--shadow)}.dash-card h3{font-size:15px;margin-bottom:12px}.dash-split{display:grid;grid-template-columns:1fr;gap:18px}@media (min-width: 860px){.dash-split{grid-template-columns:1fr 1fr}}.concept-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px}.concept{display:flex;flex-direction:column;gap:3px;padding:12px 14px;border-radius:13px;background:#64748b12}.concept.mastered{background:#10b9811a}.concept-name{font-weight:700;font-size:13.5px}.concept-count{font-size:12.5px;color:var(--muted)}.concept.mastered .concept-count{color:#047857;font-weight:700}.day-chart{display:flex;align-items:flex-end;gap:6px;height:90px}.day-col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:4px}.day-bar{width:100%;min-height:3px;border-radius:6px 6px 3px 3px;background:var(--accent-grad)}.day-label{font-size:10px;color:var(--muted)}.dash-note{font-size:12.5px;color:var(--muted);margin-top:10px}.dash-table{width:100%;border-collapse:collapse;font-size:13px}.dash-table th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);padding:6px 8px}.dash-table td{padding:7px 8px;border-top:1px solid rgba(30,36,71,.06)}.cell-win{color:#047857;font-weight:600}.cell-fail{color:var(--muted)}.dash-details summary{display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-weight:700;font-size:14.5px;list-style:none}.dash-details summary::-webkit-details-marker{display:none}.pack-progress{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}.pack-bar{width:120px;height:8px;border-radius:999px;background:#64748b26;overflow:hidden;display:inline-block}.pack-bar span{display:block;height:100%;border-radius:999px;background:var(--accent-grad)}.dash-details[open] summary{margin-bottom:12px}.dash-achievements{display:flex;flex-wrap:wrap;gap:7px}.ach-chip{font-size:12.5px;font-weight:600;padding:6px 11px;border-radius:999px;background:#6366f114}.ach-chip.ach-locked{opacity:.45;background:#64748b14}.cloud-buttons{display:flex;gap:10px;flex-wrap:wrap}.auth-btn{background:#fff;border:1.5px solid rgba(30,36,71,.15);font-size:14px;padding:11px 18px;min-height:44px}.auth-btn:disabled{opacity:.55}.auth-apple{background:#1e2447;color:#fff;border-color:#1e2447}.cloud-card code{background:#6366f114;padding:1px 6px;border-radius:6px;font-size:12px}@media (max-width: 640px){:root{--cell: clamp(34px, 10.5vmin, 52px)}.hub,.puzzle,.parent-zone{padding:16px 14px 90px}.hub-title{font-size:28px}.mode-row{flex-direction:column}.puzzle-top .btn-run{padding:10px 16px;font-size:14px}.tray{grid-template-columns:repeat(4,1fr)}.controls{gap:7px}.par-chip{margin-left:0;width:100%;text-align:center}.win-card{padding:28px 20px 22px}.stat-value{font-size:26px}}@supports (padding: env(safe-area-inset-bottom)){.hub,.puzzle,.parent-zone{padding-bottom:calc(60px + env(safe-area-inset-bottom))}}.picker{display:flex;flex-direction:column;align-items:center;gap:10px;padding-top:7vh}.picker-header{display:flex;align-items:center;gap:16px}.picker-question{font-size:clamp(22px,4vw,30px);letter-spacing:-.02em;margin:18px 0 8px}.profile-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;max-width:760px}.profile-card-wrap{position:relative}.profile-card{display:flex;flex-direction:column;align-items:center;gap:8px;width:148px;padding:22px 14px 18px;border-radius:var(--radius);background:var(--card);border:1.5px solid var(--card-border);box-shadow:var(--shadow);transition:transform .16s,box-shadow .16s,border-color .16s}.profile-card:hover{transform:translateY(-4px) scale(1.02);box-shadow:var(--shadow-lift);border-color:color-mix(in srgb,var(--indigo) 40%,transparent)}.profile-avatar{font-size:46px;line-height:1}.profile-name{font-weight:700;font-size:16px;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.profile-stars{display:flex;align-items:center;gap:5px;font-weight:600;font-size:14px;color:var(--muted)}.profile-stars svg{color:var(--amber)}.profile-add{border-style:dashed;color:var(--muted)}.profile-edit{position:absolute;top:-8px;right:-8px;width:34px;height:34px;border-radius:12px;background:#fff;box-shadow:var(--shadow);border:1px solid var(--card-border);font-size:15px;display:grid;place-items:center}.picker-lock{margin-top:22px}.profile-editor .name-input{font:inherit;font-size:18px;font-weight:600;text-align:center;width:100%;padding:12px;margin:14px 0;border-radius:14px;border:2px solid var(--card-border);background:var(--bg);color:var(--ink);outline:none}.profile-editor .name-input:focus{border-color:var(--indigo)}.avatar-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin-bottom:18px}.avatar-chip{font-size:26px;padding:8px 0;border-radius:12px;border:2px solid transparent;background:#6366f10f;transition:transform .12s,border-color .12s}.avatar-chip:hover{transform:scale(1.1)}.avatar-chip.selected{border-color:var(--indigo);background:#fff}.delete-confirm{color:var(--rose)!important;font-weight:600}.profile-chip{display:flex;align-items:center;gap:8px;padding:8px 16px 8px 10px;border-radius:999px;background:var(--card);border:1px solid var(--card-border);box-shadow:var(--shadow);font-weight:700;font-size:14.5px;transition:transform .15s,box-shadow .15s}.profile-chip:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift)}.profile-chip-avatar{font-size:22px}.kid-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}.kid-tab{display:flex;align-items:center;gap:7px;padding:9px 16px;border-radius:999px;background:var(--card);border:1.5px solid var(--card-border);box-shadow:var(--shadow);font-weight:600;font-size:14px}.kid-tab.active{border-color:var(--violet);box-shadow:0 0 0 3px #8b5cf626,var(--shadow)}.kid-tab span{font-size:17px}.help-row{display:flex;gap:9px;flex-wrap:wrap;margin:-8px 0 16px 60px}.help-btn{font-weight:600}.strategy-card{margin:0 0 16px 60px;max-width:640px;padding:13px 17px;border-radius:14px;background:#f59e0b17;border:1px solid rgba(245,158,11,.3);font-size:14.5px;line-height:1.45;animation:riseUp .3s ease-out}.demo-badge{position:absolute;top:14px;left:50%;transform:translate(-50%);padding:8px 18px;border-radius:999px;background:var(--accent-grad);color:#fff;font-weight:700;font-size:13.5px;box-shadow:0 8px 20px #6366f166;animation:riseUp .3s ease-out}.fail-banner.demo-done{border-color:#10b98166}.confetti{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:hidden}.confetti-piece{position:absolute;top:-14px;width:10px;height:14px;border-radius:3px;animation:confettiFall linear forwards}@keyframes confettiFall{0%{transform:translateY(0) rotate(0);opacity:1}90%{opacity:1}to{transform:translateY(105vh) rotate(560deg);opacity:0}}@media (max-width: 640px){.help-row,.strategy-card{margin-left:0}.profile-card{width:128px}}