:root{--cream: #FBF3E6;--cream-2: #F4E8D3;--card: #FFFDF8;--card-2: #FFF7EA;--ink: #3B2A1B;--ink-soft: #836A52;--ink-faint:#A9927B;--line: #EBDCC4;--line-2: #E0CDAE;--primary: #F2862E;--primary-d: #D96A19;--amber: #F7B231;--amber-d: #E0951A;--terra: #DB5A2E;--terra-d: #BE4420;--green: #5BA45F;--green-d: #46863F;--red: #E05E4A;--red-d: #C2452F;--bg: var(--cream);--accent: var(--primary);--accent-d: var(--primary-d);--shadow-sm: 0 2px 0 rgba(123,86,42,.1), 0 4px 12px rgba(123,86,42,.08);--shadow-md: 0 10px 30px rgba(123,86,42,.16);--r-lg: 28px;--r-md: 20px;--r-sm: 14px;--font-display: "Fredoka", "Mitr", system-ui, sans-serif;--font-ui: "Mitr", "Fredoka", system-ui, sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;padding:0;font-family:var(--font-ui);color:var(--ink)}body{min-height:100vh;background:radial-gradient(120% 80% at 50% -10%,#ffe6be,#ffe6be00 55%),radial-gradient(90% 60% at 110% 110%,#fcd9b0,#fcd9b000 50%),#f0dec0;display:flex;align-items:center;justify-content:center;padding:0}#root{width:100%;display:flex;justify-content:center}.device{position:relative;width:100%;max-width:440px;height:100vh;max-height:100vh;background:var(--bg);overflow:hidden;display:flex;flex-direction:column}@media (min-width: 480px){body{padding:24px}.device{height:min(932px,calc(100vh - 48px));border-radius:44px;box-shadow:0 40px 90px #50341459,0 0 0 12px #2c2118,0 0 0 14px #4a3a28}}.screen{flex:1 1 auto;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;padding:0 20px 120px}.screen::-webkit-scrollbar{width:0}.session-screen{flex:1 1 auto;display:flex;flex-direction:column;overflow:hidden;background:var(--bg)}.topbar{flex:0 0 auto;padding:14px 20px 8px;display:flex;align-items:center;gap:12px}.topbar .spacer{flex:1}.pill{display:inline-flex;align-items:center;gap:6px;background:var(--card);border:1.5px solid var(--line);padding:7px 13px;border-radius:999px;font-weight:600;font-size:14px;box-shadow:var(--shadow-sm)}.pill .em{font-size:16px;line-height:1}.pill.streak{color:var(--terra-d)}.pill.gem{color:var(--amber-d)}.h-display{font-family:var(--font-display);font-weight:600;letter-spacing:-.01em}.eyebrow{font-size:13px;font-weight:600;color:var(--ink-soft);letter-spacing:.02em}.btn{font-family:var(--font-ui);font-weight:600;font-size:17px;border:none;border-radius:var(--r-md);padding:15px 20px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;color:#fff;background:var(--accent);box-shadow:0 5px 0 var(--accent-d);transition:transform .06s ease,box-shadow .06s ease,background .15s;-webkit-user-select:none;user-select:none}.btn:active{transform:translateY(4px);box-shadow:0 1px 0 var(--accent-d)}.btn.green{background:var(--green);box-shadow:0 5px 0 var(--green-d)}.btn.green:active{box-shadow:0 1px 0 var(--green-d)}.btn.terra{background:var(--terra);box-shadow:0 5px 0 var(--terra-d)}.btn.amber{background:var(--amber);color:#5a3d05;box-shadow:0 5px 0 var(--amber-d)}.btn.ghost{background:var(--card);color:var(--ink);box-shadow:0 4px 0 var(--line-2);border:1.5px solid var(--line)}.btn.ghost:active{box-shadow:0 1px 0 var(--line-2)}.btn.sm{font-size:15px;padding:11px 16px;width:auto}.btn:disabled{opacity:.45;pointer-events:none}.btn.loading{opacity:.7;pointer-events:none}.btn.loading:after{content:"";display:inline-block;width:12px;height:12px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;margin-left:8px;vertical-align:middle}@keyframes spin{to{transform:rotate(360deg)}}.icon-btn{width:44px;height:44px;border-radius:50%;border:1.5px solid var(--line);background:var(--card);display:inline-flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;flex:0 0 auto;box-shadow:var(--shadow-sm);transition:transform .06s}.icon-btn:active{transform:scale(.92)}.card{background:var(--card);border:1.5px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-sm)}.bottomnav{position:absolute;left:0;right:0;bottom:0;height:78px;padding-bottom:env(safe-area-inset-bottom,0);background:#fffdf8eb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1.5px solid var(--line);display:flex;align-items:stretch;z-index:30}.navitem{flex:1;border:none;background:none;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--ink-faint);font-family:var(--font-ui);font-size:11px;font-weight:600;padding-top:6px}.navitem .ico{font-size:22px;line-height:1;filter:grayscale(.5);opacity:.6;transition:.15s}.navitem.active{color:var(--accent-d)}.navitem.active .ico{filter:none;opacity:1;transform:translateY(-1px) scale(1.12)}.ring-wrap{position:relative;display:inline-grid;place-items:center}.ring-wrap .ring-center{position:absolute;text-align:center}.flip-area{flex:1;display:flex;padding:6px 22px 18px}.flcard{position:relative;width:100%;flex:1;border-radius:var(--r-lg);background:var(--card);border:1.5px solid var(--line);box-shadow:var(--shadow-md);display:flex;flex-direction:column;padding:26px 24px;cursor:pointer;overflow:hidden}.flcard.back{background:var(--card-2)}.flip-anim{animation:flipIn .34s cubic-bezier(.2,.8,.25,1);transform-origin:center}@keyframes flipIn{0%{transform:perspective(1100px) rotateY(-78deg);opacity:.25}to{transform:none;opacity:1}}.opt{width:100%;text-align:left;background:var(--card);border:2px solid var(--line);border-radius:var(--r-md);padding:16px 18px;font-family:var(--font-ui);font-size:17px;font-weight:500;color:var(--ink);cursor:pointer;box-shadow:0 3px 0 var(--line-2);transition:transform .06s,border-color .15s,background .15s;display:flex;align-items:center;gap:12px}.opt:active{transform:translateY(3px);box-shadow:0 0 0 var(--line-2)}.opt.correct{border-color:var(--green);background:#eaf6e9;box-shadow:0 3px 0 var(--green-d);color:var(--green-d)}.opt.wrong{border-color:var(--red);background:#fbeae6;box-shadow:0 3px 0 var(--red-d);color:var(--red-d)}.opt.dim{opacity:.5}.opt .optnum{width:26px;height:26px;border-radius:8px;flex:0 0 auto;background:var(--cream-2);display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--ink-soft)}.pos-tag{display:inline-block;font-size:12px;font-weight:600;padding:3px 9px;border-radius:999px;background:var(--cream-2);color:var(--ink-soft);font-style:italic}.lvl-dots{display:inline-flex;gap:3px}.lvl-dots i{width:6px;height:6px;border-radius:50%;background:var(--line-2)}.lvl-dots i.on{background:var(--amber)}.stage-row{display:flex;align-items:center;gap:14px}.node{width:72px;height:72px;border-radius:24px;flex:0 0 auto;display:grid;place-items:center;font-size:30px;position:relative;cursor:pointer;transition:transform .08s}.node:active{transform:scale(.94)}.node.done{background:var(--green);box-shadow:0 5px 0 var(--green-d)}.node.current{background:var(--accent);box-shadow:0 5px 0 var(--accent-d);animation:bob 2.4s ease-in-out infinite}.node.locked{background:var(--cream-2);box-shadow:0 5px 0 var(--line-2);filter:grayscale(.5);opacity:.8}.node .lock-em{font-size:24px;opacity:.6}.node .check{position:absolute;top:-6px;right:-6px;font-size:20px}@keyframes bob{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}.map-line{width:4px;background:var(--line-2);border-radius:2px;margin-left:34px}.map-line.done{background:var(--green)}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:60;background:#3b2a1b73;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;padding:24px;animation:fade .25s ease}@keyframes fade{0%{opacity:0}}.sheet{background:var(--card);border-radius:var(--r-lg);padding:30px 26px;width:100%;max-width:360px;text-align:center;box-shadow:var(--shadow-md);animation:pop .35s cubic-bezier(.2,1.3,.4,1)}@keyframes pop{0%{transform:scale(.7);opacity:0}}.confetti{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:hidden;z-index:65}.confetti i{position:absolute;top:-12px;width:9px;height:14px;border-radius:2px;animation:fall linear forwards}@keyframes fall{to{transform:translateY(120vh) rotate(720deg);opacity:.9}}.bar{height:12px;border-radius:999px;background:var(--cream-2);overflow:hidden}.bar>span{display:block;height:100%;border-radius:999px;background:var(--accent);transition:width .5s cubic-bezier(.2,.8,.25,1)}.bar.green>span{background:var(--green)}.bar.amber>span{background:var(--amber)}.fin{animation:fin .3s ease}@keyframes fin{0%{transform:translateY(8px)}to{transform:none}}.wrow{display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:var(--r-sm);background:var(--card);border:1.5px solid var(--line)}.wrow+.wrow{margin-top:8px}.known-dot{width:10px;height:10px;border-radius:50%;flex:0 0 auto;background:var(--line-2)}.known-dot.on{background:var(--green)}.seg{display:flex;background:var(--cream-2);border-radius:999px;padding:4px;gap:4px}.seg button{flex:1;border:none;background:none;cursor:pointer;font-family:var(--font-ui);font-size:13px;font-weight:600;color:var(--ink-soft);padding:8px 6px;border-radius:999px;transition:.15s}.seg button.on{background:var(--card);color:var(--accent-d);box-shadow:var(--shadow-sm)}.stat-card{padding:16px;border-radius:var(--r-md);text-align:center}.big-num{font-family:var(--font-display);font-size:30px;font-weight:600;line-height:1}.auth-device{display:flex;flex-direction:column;align-items:stretch;justify-content:center;padding:32px 22px 40px;gap:20px;background:var(--cream);overflow-y:auto}.auth-brand{display:flex;align-items:center;gap:14px;padding:0 2px}.auth-logo{width:52px;height:52px;background:var(--accent);border-radius:18px;display:grid;place-items:center;font-family:var(--font-display);font-size:26px;font-weight:700;color:#fff;box-shadow:0 4px 14px #f2862e59;flex:0 0 auto}.auth-title{font-size:22px;color:var(--ink)}.auth-sub{font-size:13px;color:var(--ink-soft);margin-top:2px;font-weight:500}.auth-card{display:flex;flex-direction:column;gap:0;padding:0;overflow:hidden}.auth-tabs{display:flex;background:var(--cream-2);border-bottom:1.5px solid var(--line)}.auth-tab{flex:1;border:none;background:transparent;font-family:var(--font-ui);font-size:13px;font-weight:600;color:var(--ink-soft);padding:12px 6px;cursor:pointer;border-bottom:2.5px solid transparent;transition:.15s}.auth-tab.on{color:var(--accent-d);border-bottom-color:var(--accent);background:var(--card)}.auth-card form{padding:18px 18px 0}.auth-field-wrap{display:flex;flex-direction:column;gap:5px}.auth-label{font-size:12px;font-weight:600;color:var(--ink-soft);padding:0 2px}.auth-input{width:100%;padding:12px 14px;border-radius:12px;border:1.5px solid var(--line);background:var(--cream);font-family:var(--font-ui);font-size:15px;color:var(--ink);outline:none;transition:border-color .15s;box-sizing:border-box}.auth-input:focus{border-color:var(--accent)}.auth-msg{padding:10px 14px;border-radius:10px;font-size:13px;font-weight:500;line-height:1.4}.auth-msg-ok{background:#ebf7ec;color:var(--green-d)}.auth-msg-err{background:#fdecea;color:var(--red-d)}.auth-card .btn{margin:14px 18px 0;width:calc(100% - 36px)}.auth-divider{display:flex;align-items:center;gap:10px;padding:14px 18px 0;color:var(--ink-faint);font-size:12px;font-weight:600}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--line)}.auth-google-btn{margin:10px 18px 18px;width:calc(100% - 36px);display:flex;align-items:center;justify-content:center;gap:10px}.auth-footer{font-size:12px;color:var(--ink-faint);text-align:center;padding:0 10px;margin:0;font-weight:500}