:root{
  --bg:#f4f7ff;--card:#fff;--ink:#23304a;--muted:#66728c;--line:#dfe5f2;
  --primary:#6557ff;--primary-dark:#4c3fe3;--secondary:#19b7a7;--yellow:#ffc84a;
  --pink:#ff668f;--green:#2fbf71;--red:#ef5261;--blue:#4e8cff;--orange:#ff9f43;--purple:#8a5cff;
  --shadow:0 14px 34px rgba(61,76,124,.14);--radius:24px;
  --safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px)
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;min-height:100%;background:var(--bg);color:var(--ink)}
body{font-family:ui-rounded,"SF Pro Rounded","Nunito",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;touch-action:manipulation}
a{color:var(--primary-dark);text-decoration:none}a:hover{text-decoration:underline}
button,input,select{font:inherit}button{border:0;cursor:pointer}button:disabled{opacity:.55;cursor:not-allowed}
button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:3px solid rgba(101,87,255,.32);outline-offset:3px}
code{background:#eef1f8;border-radius:7px;padding:2px 5px}
.muted{color:var(--muted)}.small{font-size:.82rem}.hidden{display:none!important}.full{width:100%}
.button{min-height:46px;border-radius:14px;padding:0 16px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:900;text-decoration:none;transition:.18s}
.button:hover{text-decoration:none;transform:translateY(-1px)}.button:active{transform:scale(.98)}
.button.primary{color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-dark));box-shadow:0 8px 20px rgba(101,87,255,.22)}
.button.soft{background:#eef1f8;color:var(--ink)}.button.green{background:var(--green);color:#fff}.button.danger{background:#fff0f2;color:var(--red)}
.notice{border-radius:14px;padding:11px 13px;margin:12px 0;font-weight:750;font-size:.88rem}.notice.success{background:#eafbf2;color:#147a43}.notice.error{background:#fff0f2;color:#b72b3d}.notice.info{background:#eef3ff;color:#3658a4}

/* Acceso e instalación */
.auth-body{background:radial-gradient(circle at 85% 5%,rgba(101,87,255,.18),transparent 30%),radial-gradient(circle at 10% 90%,rgba(25,183,167,.16),transparent 32%),var(--bg)}
.auth-shell{min-height:100dvh;width:min(100%,480px);margin:auto;padding:calc(28px + var(--safe-top)) 16px calc(28px + var(--safe-bottom));display:grid;place-items:center}.auth-shell.wide{width:min(100%,760px)}
.auth-card{width:100%;background:rgba(255,255,255,.94);border:1px solid rgba(255,255,255,.9);border-radius:28px;padding:24px;box-shadow:var(--shadow)}
.auth-brand{display:flex;align-items:center;gap:13px;margin-bottom:18px}.auth-brand>span{width:54px;height:54px;border-radius:18px;display:grid;place-items:center;font-size:29px;background:linear-gradient(145deg,var(--primary),#8b7cff);box-shadow:0 9px 20px rgba(101,87,255,.25)}
.auth-brand h1{margin:0;font-size:1.45rem}.auth-brand p{margin:4px 0 0;color:var(--muted);font-size:.87rem}.auth-foot{text-align:center;color:var(--muted);font-size:.86rem;margin:18px 0 0}
.form-grid{display:grid;gap:13px}.form-grid h2{font-size:1rem;margin:9px 0 -2px;color:var(--primary-dark)}
.form-grid label{display:grid;gap:6px;color:var(--muted);font-size:.79rem;font-weight:850}.form-grid input,.form-grid select{width:100%;min-height:48px;border:1.5px solid var(--line);border-radius:14px;padding:0 13px;background:#fff;color:var(--ink);font-weight:750}.form-grid input:focus,.form-grid select:focus{border-color:var(--primary)}
.install-grid{grid-template-columns:1fr 1fr}.install-grid h2,.install-grid .span-2{grid-column:1/-1}

/* Cabecera compartida */
.site-shell{min-height:100dvh}.site-header{position:sticky;top:0;z-index:20;background:rgba(244,247,255,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(223,229,242,.85)}
.site-header-inner{width:min(100%,1180px);margin:auto;min-height:68px;padding:8px 18px;display:flex;align-items:center;justify-content:space-between;gap:15px}.site-brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:950}.site-brand:hover{text-decoration:none}.site-brand span{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(145deg,var(--primary),#8b7cff);font-size:23px}.site-nav{display:flex;align-items:center;gap:7px;flex-wrap:wrap}.nav-link{min-height:40px;padding:0 12px;border-radius:12px;display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:.84rem;font-weight:850}.nav-link:hover,.nav-link.active{background:#fff;color:var(--primary-dark);text-decoration:none;box-shadow:0 5px 15px rgba(61,76,124,.08)}
.page{width:min(100%,1180px);margin:auto;padding:22px 18px 42px}.page-title{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:17px}.page-title h1{font-size:clamp(1.35rem,3vw,2rem);margin:0}.page-title p{margin:5px 0 0;color:var(--muted)}
.panel{background:var(--card);border-radius:22px;padding:18px;box-shadow:0 8px 25px rgba(61,76,124,.08);border:1px solid rgba(223,229,242,.8)}.panel h2,.panel h3{margin-top:0}.section-title{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px}.section-title h2{font-size:1rem;margin:0}.section-title span{font-size:.78rem;color:var(--muted);font-weight:800}

/* Juego */
.game-body{overscroll-behavior-y:contain}.game-app{width:min(100%,560px);min-height:100dvh;margin:0 auto;padding:calc(10px + var(--safe-top)) 14px calc(82px + var(--safe-bottom));position:relative;overflow-x:hidden}.game-bg{position:fixed;border-radius:999px;filter:blur(5px);opacity:.22;pointer-events:none}.game-bg.a{width:210px;height:210px;background:#8e7dff;top:-80px;right:-90px}.game-bg.b{width:190px;height:190px;background:#60ddd0;bottom:7%;left:-110px}
.game-topbar{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:11px}.game-brand{display:flex;align-items:center;gap:10px}.game-brand-mark{width:44px;height:44px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(145deg,var(--primary),#8b7cff);font-size:24px;box-shadow:0 8px 18px rgba(101,87,255,.25)}.game-brand h1{font-size:1.08rem;line-height:1;margin:0}.game-brand p{font-size:.73rem;margin:5px 0 0;color:var(--muted)}.round-link{width:44px;height:44px;border-radius:15px;background:rgba(255,255,255,.9);display:grid;place-items:center;font-size:20px;box-shadow:0 7px 18px rgba(61,76,124,.1)}
.player-card{position:relative;z-index:1;background:linear-gradient(135deg,#6557ff 0%,#7968ff 54%,#5c94ff 100%);color:#fff;border-radius:23px;padding:14px 15px;box-shadow:var(--shadow);margin-bottom:11px}.player-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.player-main{display:flex;align-items:center;gap:10px}.player-avatar{width:45px;height:45px;border-radius:15px;background:rgba(255,255,255,.18);display:grid;place-items:center;font-size:23px}.player-name strong{display:block}.player-name span{font-size:.75rem;opacity:.82}.streak-pill{white-space:nowrap;background:rgba(255,255,255,.18);border-radius:99px;padding:8px 10px;font-weight:900;font-size:.82rem}.xp-line{height:8px;background:rgba(255,255,255,.18);border-radius:99px;overflow:hidden;margin-top:11px}.xp-line i{display:block;height:100%;background:#fff;border-radius:inherit;transition:.35s}.xp-caption{display:flex;justify-content:space-between;font-size:.68rem;margin-top:5px;opacity:.8;font-weight:800}
.daily-card{position:relative;z-index:1;background:rgba(255,255,255,.86);border-radius:18px;padding:11px 12px;margin-bottom:11px;box-shadow:0 7px 20px rgba(61,76,124,.07)}.daily-head{display:flex;justify-content:space-between;align-items:center;font-size:.78rem;font-weight:900;margin-bottom:8px}.daily-head span:last-child{color:var(--muted)}.milestone-track{display:grid;grid-template-columns:10fr 15fr 35fr 40fr;gap:4px;height:12px}.milestone-track i{border-radius:99px;background:#e6eaf3;position:relative;overflow:hidden}.milestone-track i::after{content:"";position:absolute;inset:0;transform:scaleX(var(--fill,0));transform-origin:left;transition:.4s}.milestone-track i:nth-child(1)::after{background:var(--blue)}.milestone-track i:nth-child(2)::after{background:var(--green)}.milestone-track i:nth-child(3)::after{background:var(--orange)}.milestone-track i:nth-child(4)::after{background:linear-gradient(90deg,var(--purple),#d45cff)}.milestone-labels{display:grid;grid-template-columns:10fr 15fr 35fr 40fr;gap:4px;margin-top:5px;text-align:center;font-size:.6rem;color:var(--muted);font-weight:900}
.game-controls{position:relative;z-index:1;background:rgba(255,255,255,.84);backdrop-filter:blur(10px);border-radius:19px;padding:9px;margin-bottom:11px;box-shadow:0 8px 23px rgba(61,76,124,.08)}.mode-tabs{display:grid;grid-template-columns:repeat(5,1fr);gap:5px}.mode-btn{min-height:41px;border-radius:12px;background:transparent;color:var(--muted);font-size:1rem;font-weight:950}.mode-btn.active{background:var(--primary);color:#fff;box-shadow:0 6px 15px rgba(101,87,255,.23)}.difficulty-row{display:flex;align-items:center;gap:8px;margin-top:8px}.difficulty-row label{font-size:.73rem;color:var(--muted);font-weight:850;white-space:nowrap}.difficulty-row select{flex:1;min-height:38px;border:1px solid var(--line);border-radius:11px;background:#fff;padding:0 9px;color:var(--ink);font-weight:850}
.question-card{position:relative;z-index:1;background:#fff;border-radius:27px;padding:17px 15px 15px;box-shadow:var(--shadow);overflow:hidden}.question-card::before{content:"";position:absolute;width:120px;height:120px;border-radius:50%;background:rgba(101,87,255,.07);right:-40px;top:-65px}.question-meta{position:relative;display:flex;justify-content:space-between;align-items:center}.challenge-chip{background:#eeebff;color:var(--primary-dark);border-radius:99px;padding:6px 10px;font-size:.72rem;font-weight:950}.difficulty-chip{font-size:.72rem;color:var(--muted);font-weight:900}.equation{position:relative;min-height:105px;display:flex;align-items:center;justify-content:center;gap:clamp(10px,4vw,22px);padding:12px 0 9px;font-variant-numeric:tabular-nums}.operand{font-size:clamp(2.2rem,12vw,4rem);line-height:1;font-weight:950;letter-spacing:-.055em}.operator{font-size:clamp(2rem,9vw,3.2rem);font-weight:950;color:var(--primary)}
.answer-row{display:grid;grid-template-columns:1fr 54px;gap:8px}.answer-display{min-height:58px;border:2px solid var(--line);border-radius:16px;background:#f9faff;display:flex;align-items:center;justify-content:center;font-size:1.65rem;font-weight:950;color:var(--ink);transition:.18s}.answer-display.placeholder{font-size:.95rem;color:#a8b0c2}.answer-display.correct{border-color:var(--green);background:#edfff5;color:#168b4b;animation:pop .35s}.answer-display.wrong{border-color:var(--red);background:#fff1f3;color:var(--red);animation:shake .32s}.erase-btn{border-radius:16px;background:#f0f2f8;color:var(--ink);font-size:1.2rem;font-weight:900}.feedback{min-height:36px;display:flex;align-items:center;justify-content:center;text-align:center;padding:8px 3px 0;color:var(--muted);font-size:.85rem;font-weight:850}.feedback.good{color:#17894c}.feedback.bad{color:#cc3a4b}
.hints-panel{display:none;margin-top:8px;border:1px solid #f6d982;background:#fff9e8;border-radius:16px;padding:11px}.hints-panel.show{display:block;animation:slideIn .22s}.hints-title{display:flex;justify-content:space-between;align-items:center;font-size:.78rem;font-weight:950;color:#745713;margin-bottom:7px}.hint-history{display:grid;gap:7px}.hint-step{display:grid;grid-template-columns:27px 1fr;gap:8px;align-items:flex-start;background:rgba(255,255,255,.62);border-radius:11px;padding:8px;color:#624b16;font-size:.83rem;line-height:1.4;font-weight:700}.hint-step b{width:27px;height:27px;border-radius:9px;display:grid;place-items:center;background:#ffdf7d;color:#654900}.hint-step p{margin:3px 0 0}.game-actions{display:grid;grid-template-columns:.95fr 1.3fr;gap:8px;margin-top:11px}.game-btn{min-height:51px;border-radius:16px;font-weight:950;display:flex;align-items:center;justify-content:center;gap:7px}.hint-btn{background:#fff1c8;color:#7d5a00}.check-btn{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 8px 19px rgba(101,87,255,.25)}.check-btn.next{background:linear-gradient(135deg,var(--green),#1d9c5a)}
.keypad{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:11px}.key{min-height:54px;border-radius:16px;background:#fff;box-shadow:0 6px 16px rgba(61,76,124,.09);border:1px solid rgba(223,229,242,.8);font-size:1.25rem;font-weight:950;color:var(--ink)}.key.utility{background:#edf0f7;font-size:.9rem}.key.enter{background:var(--secondary);color:#fff}.key:active,.mode-btn:active,.game-btn:active{transform:scale(.97)}
.game-bottom-nav{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(9px + var(--safe-bottom));z-index:30;width:min(calc(100% - 22px),530px);background:rgba(255,255,255,.92);backdrop-filter:blur(13px);border:1px solid rgba(223,229,242,.9);border-radius:18px;padding:6px;display:grid;grid-template-columns:repeat(3,1fr);box-shadow:0 12px 30px rgba(61,76,124,.18)}.game-bottom-nav a{min-height:45px;border-radius:13px;display:flex;align-items:center;justify-content:center;gap:6px;color:var(--muted);font-size:.75rem;font-weight:900}.game-bottom-nav a.active{background:#eeebff;color:var(--primary-dark)}.game-bottom-nav a:hover{text-decoration:none}

/* Ventanas de logros */
.achievement-toast{position:fixed;z-index:100;left:50%;bottom:calc(82px + var(--safe-bottom));transform:translateX(-50%) translateY(25px);width:min(calc(100% - 28px),450px);background:#202a41;color:#fff;border-radius:20px;padding:14px;box-shadow:0 15px 40px rgba(20,28,52,.35);display:flex;align-items:center;gap:12px;opacity:0;pointer-events:none;transition:.28s}.achievement-toast.show{opacity:1;transform:translateX(-50%) translateY(0)}.achievement-toast .event-icon{width:46px;height:46px;border-radius:15px;background:rgba(255,255,255,.14);display:grid;place-items:center;font-size:24px;flex:none}.achievement-toast strong{display:block;font-size:.91rem}.achievement-toast p{margin:4px 0 0;font-size:.77rem;opacity:.8;line-height:1.3}.celebration{position:fixed;inset:0;pointer-events:none;z-index:90;overflow:hidden}.confetti{position:absolute;top:-20px;width:10px;height:17px;border-radius:3px;animation:fall 1.4s linear forwards}

/* Dashboard */
.dashboard-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:15px}.col-12{grid-column:span 12}.col-8{grid-column:span 8}.col-7{grid-column:span 7}.col-6{grid-column:span 6}.col-5{grid-column:span 5}.col-4{grid-column:span 4}.col-3{grid-column:span 3}
.child-switcher{display:flex;gap:9px;overflow-x:auto;padding:2px 2px 8px}.child-pill{min-width:145px;background:#fff;border:2px solid transparent;border-radius:17px;padding:10px;display:flex;align-items:center;gap:9px;color:var(--ink);box-shadow:0 6px 17px rgba(61,76,124,.07)}.child-pill:hover{text-decoration:none}.child-pill.active{border-color:var(--primary);background:#f4f1ff}.child-pill .avatar{font-size:24px}.child-pill strong{font-size:.82rem;display:block}.child-pill span{font-size:.68rem;color:var(--muted)}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:11px}.metric{border-radius:17px;background:#f7f8fc;padding:13px;min-height:98px}.metric .metric-icon{font-size:20px}.metric strong{display:block;font-size:1.45rem;margin-top:8px;letter-spacing:-.03em}.metric span{font-size:.72rem;color:var(--muted);font-weight:800}.metric.good{background:#ecfbf3}.metric.warn{background:#fff6e5}.metric.purple{background:#f1edff}.metric.blue{background:#edf4ff}
.filter-row{display:flex;gap:7px;flex-wrap:wrap}.filter-chip{min-height:36px;padding:0 11px;border-radius:99px;background:#eef1f7;color:var(--muted);display:inline-flex;align-items:center;font-size:.75rem;font-weight:900}.filter-chip.active{background:var(--primary);color:#fff}.filter-chip:hover{text-decoration:none}
.daily-chart{height:190px;display:flex;align-items:flex-end;gap:5px;padding:15px 0 0;overflow-x:auto;border-bottom:1px solid var(--line)}.daily-bar-wrap{height:100%;min-width:20px;flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:5px}.daily-bar{width:min(100%,24px);min-height:2px;border-radius:7px 7px 2px 2px;background:linear-gradient(180deg,var(--primary),#8d80ff);position:relative}.daily-bar:hover::after{content:attr(data-tip);position:absolute;bottom:calc(100% + 7px);left:50%;transform:translateX(-50%);background:#202a41;color:#fff;font-size:.65rem;white-space:nowrap;padding:5px 7px;border-radius:7px;z-index:5}.daily-bar-wrap small{font-size:.6rem;color:var(--muted);font-weight:800}.chart-legend{display:flex;gap:12px;flex-wrap:wrap;margin-top:10px;font-size:.72rem;color:var(--muted);font-weight:800}
.operation-list{display:grid;gap:10px}.operation-row{display:grid;grid-template-columns:42px 1fr auto;gap:10px;align-items:center}.operation-symbol{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:#eeebff;color:var(--primary-dark);font-size:1.2rem;font-weight:950}.operation-main strong{font-size:.84rem}.operation-main p{margin:3px 0 5px;color:var(--muted);font-size:.69rem}.thin-track{height:7px;border-radius:99px;background:#e7ebf3;overflow:hidden}.thin-track i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--secondary),var(--green))}.operation-score{font-size:.85rem;font-weight:950}
.week-dots{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.day-dot{text-align:center}.day-dot .dot{width:34px;height:34px;border-radius:50%;margin:auto;display:grid;place-items:center;background:#e5e9f1;color:#9aa3b7;font-size:.65rem;font-weight:950;border:3px solid #fff;box-shadow:0 3px 9px rgba(61,76,124,.12)}.day-dot .dot.level-1{background:var(--blue);color:#fff}.day-dot .dot.level-2{background:var(--green);color:#fff}.day-dot .dot.level-3{background:var(--orange);color:#fff}.day-dot .dot.level-4{background:linear-gradient(145deg,var(--purple),#d45cff);color:#fff;box-shadow:0 4px 13px rgba(138,92,255,.35)}.day-dot small{display:block;margin-top:5px;color:var(--muted);font-size:.62rem;font-weight:800}
.calendar{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}.calendar .weekday{text-align:center;color:var(--muted);font-size:.65rem;font-weight:950;padding-bottom:4px}.calendar-day{aspect-ratio:1;border-radius:11px;background:#f5f7fb;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:.7rem;font-weight:850;position:relative}.calendar-day.today{outline:2px solid var(--primary)}.calendar-day.empty{background:transparent}.calendar-dot{width:9px;height:9px;border-radius:50%;background:#dbe0e9}.calendar-dot.level-1{background:var(--blue)}.calendar-dot.level-2{background:var(--green)}.calendar-dot.level-3{background:var(--orange)}.calendar-dot.level-4{background:var(--purple);box-shadow:0 0 0 3px rgba(138,92,255,.14)}
.data-table{width:100%;border-collapse:collapse;font-size:.78rem}.data-table th{text-align:left;color:var(--muted);font-size:.68rem;padding:9px 7px;border-bottom:1px solid var(--line)}.data-table td{padding:10px 7px;border-bottom:1px solid #edf0f6;vertical-align:middle}.result-pill{display:inline-flex;align-items:center;gap:4px;border-radius:99px;padding:4px 7px;font-weight:900;font-size:.65rem}.result-pill.ok{background:#eafbf2;color:#147a43}.result-pill.bad{background:#fff0f2;color:#b72b3d}.table-scroll{overflow-x:auto}
.recommendation{display:flex;gap:12px;align-items:flex-start;background:linear-gradient(135deg,#fff7d9,#fffdf4);border:1px solid #f1dc90;border-radius:17px;padding:13px}.recommendation span{font-size:24px}.recommendation p{margin:0;color:#66501c;font-size:.82rem;line-height:1.45;font-weight:750}
.parent-tools{display:grid;grid-template-columns:1fr 1fr;gap:14px}.compact-form{display:grid;gap:9px}.compact-form .row{display:grid;grid-template-columns:1fr 1fr;gap:8px}.compact-form label{display:grid;gap:5px;font-size:.71rem;color:var(--muted);font-weight:850}.compact-form input,.compact-form select{min-height:42px;border:1px solid var(--line);border-radius:12px;padding:0 10px;background:#fff}.child-access{background:#f7f8fc;border-radius:14px;padding:11px;font-size:.77rem;line-height:1.55}.child-access strong{color:var(--primary-dark)}

/* Insignias */
.badge-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:15px}.badge-summary .summary-box{background:#fff;border-radius:18px;padding:14px;box-shadow:0 7px 20px rgba(61,76,124,.07)}.summary-box strong{display:block;font-size:1.4rem}.summary-box span{font-size:.72rem;color:var(--muted);font-weight:800}.badge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.achievement-card{background:#fff;border-radius:20px;padding:15px;border:1px solid rgba(223,229,242,.85);box-shadow:0 7px 20px rgba(61,76,124,.07);position:relative;overflow:hidden}.achievement-card::after{content:"";position:absolute;width:80px;height:80px;border-radius:50%;background:rgba(101,87,255,.05);right:-30px;top:-30px}.achievement-head{display:flex;align-items:center;gap:10px;position:relative;z-index:1}.achievement-icon{width:46px;height:46px;border-radius:15px;display:grid;place-items:center;font-size:23px;background:#f1edff}.achievement-head strong{font-size:.86rem;display:block}.achievement-head span{font-size:.68rem;color:var(--muted)}.achievement-description{font-size:.72rem;color:var(--muted);line-height:1.4;min-height:40px;margin:11px 0}.progress-meta{display:flex;justify-content:space-between;font-size:.7rem;font-weight:900;margin-bottom:6px}.progress-meta span:last-child{color:var(--muted)}.badge-track{height:10px;border-radius:99px;background:#e7eaf2;overflow:hidden}.badge-track i{height:100%;display:block;border-radius:inherit;background:linear-gradient(90deg,var(--primary),var(--pink))}.tier-dots{display:flex;gap:4px;margin-top:9px}.tier-dots i{width:8px;height:8px;border-radius:50%;background:#dde1ea}.tier-dots i.done{background:var(--yellow);box-shadow:0 0 0 2px rgba(255,200,74,.18)}

@keyframes pop{50%{transform:scale(1.035)}}@keyframes shake{25%{transform:translateX(-5px)}50%{transform:translateX(5px)}75%{transform:translateX(-3px)}}@keyframes slideIn{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}@keyframes fall{to{transform:translateY(110vh) rotate(680deg);opacity:.9}}
@media(max-width:900px){.col-8,.col-7,.col-6,.col-5,.col-4,.col-3{grid-column:span 12}.metric-grid{grid-template-columns:repeat(2,1fr)}.badge-grid{grid-template-columns:repeat(2,1fr)}.parent-tools{grid-template-columns:1fr}}
@media(max-width:620px){.site-header-inner{padding:8px 12px}.site-brand b{display:none}.site-nav .nav-link span{display:none}.page{padding:16px 12px 34px}.page-title{display:block}.page-title .filter-row{margin-top:12px}.panel{padding:14px;border-radius:18px}.metric-grid{grid-template-columns:repeat(2,1fr);gap:8px}.metric{min-height:88px;padding:11px}.metric strong{font-size:1.2rem}.badge-grid{grid-template-columns:1fr}.badge-summary{grid-template-columns:1fr 1fr}.badge-summary .summary-box:last-child{grid-column:1/-1}.install-grid{grid-template-columns:1fr}.install-grid h2,.install-grid .span-2{grid-column:auto}.auth-card{padding:20px}.data-table{min-width:620px}.parent-tools .row{grid-template-columns:1fr}.week-dots{gap:4px}.day-dot .dot{width:30px;height:30px}.game-app{padding-left:11px;padding-right:11px}.key{min-height:52px}}
@media(max-height:700px){.player-card{padding:10px 13px}.equation{min-height:82px;padding:6px 0}.key{min-height:47px}.feedback{min-height:29px}.question-card{padding-top:13px}}


/* PWA installation */
.pwa-install-banner{position:fixed;z-index:1200;left:50%;bottom:calc(14px + var(--safe-bottom));width:min(calc(100% - 24px),560px);display:grid;grid-template-columns:54px minmax(0,1fr);gap:10px 13px;align-items:center;padding:13px;background:rgba(255,255,255,.97);border:1px solid rgba(101,87,255,.16);border-radius:21px;box-shadow:0 18px 48px rgba(35,48,74,.25);backdrop-filter:blur(14px);transform:translate(-50%,calc(100% + 40px));opacity:0;transition:transform .26s ease,opacity .26s ease}
.pwa-install-banner.show{transform:translate(-50%,0);opacity:1}.pwa-install-banner[hidden]{display:none}
.game-body .pwa-install-banner{bottom:calc(82px + var(--safe-bottom))}
.pwa-install-icon{width:54px;height:54px;border-radius:15px;overflow:hidden;box-shadow:0 5px 14px rgba(76,63,227,.24)}.pwa-install-icon img{display:block;width:100%;height:100%}
.pwa-install-copy{min-width:0;display:flex;flex-direction:column;gap:2px}.pwa-install-copy strong{font-size:1rem}.pwa-install-copy span{font-size:.82rem;line-height:1.25;color:var(--muted)}
.pwa-install-actions{grid-column:1/-1;display:grid;grid-template-columns:1fr auto;gap:8px}
.pwa-install-primary,.pwa-install-later{min-height:43px;border-radius:13px;padding:0 16px;font-weight:900}.pwa-install-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 7px 18px rgba(101,87,255,.2)}.pwa-install-later{background:#eef1f8;color:var(--ink)}
.pwa-help-backdrop{position:fixed;z-index:1300;inset:0;display:grid;place-items:end center;padding:18px;background:rgba(25,31,49,.48);opacity:0;transition:opacity .22s ease}.pwa-help-backdrop.show{opacity:1}.pwa-help-backdrop[hidden]{display:none}
.pwa-help-card{position:relative;width:min(100%,470px);padding:26px 22px calc(22px + var(--safe-bottom));border-radius:27px 27px 18px 18px;background:#fff;text-align:center;box-shadow:0 22px 70px rgba(20,26,44,.32);transform:translateY(35px);transition:transform .22s ease}.pwa-help-backdrop.show .pwa-help-card{transform:translateY(0)}
.pwa-help-close{position:absolute;right:12px;top:10px;width:40px;height:40px;border-radius:50%;background:#eef1f8;color:var(--ink);font-size:1.7rem;line-height:1}.pwa-help-icon{width:72px;height:72px;border-radius:19px;box-shadow:0 8px 20px rgba(76,63,227,.2)}.pwa-help-card h2{margin:13px 0 12px;font-size:1.35rem}.pwa-help-steps{text-align:left;margin:0 0 20px;padding-left:24px;color:var(--muted);line-height:1.45}.pwa-help-steps li{padding:5px 0}.pwa-help-steps b{color:var(--ink)}.pwa-share-symbol{display:inline-block;border:1px solid var(--line);border-radius:7px;padding:1px 5px;color:var(--primary-dark);font-weight:900}.pwa-help-ok{width:100%}
@media(min-width:600px){.pwa-install-banner{grid-template-columns:54px minmax(0,1fr) auto}.pwa-install-actions{grid-column:auto;display:flex}.pwa-help-backdrop{place-items:center}.pwa-help-card{border-radius:27px}}
@media(display-mode:standalone){.pwa-install-banner,.pwa-help-backdrop{display:none!important}}