:root{--orange: #ff7a59;--orange-d: #f4623b;--yellow: #ffcf5c;--pink: #ff8fb1;--purple: #9b6dff;--blue: #5ec8ff;--green: #5fd08a;--bg1: #ff9a6b;--bg2: #ff9ec2;--bg3: #c2a8ff;--ink: #3a2e3f;--ink-soft: #7a6b80;--card: #ffffff;--shadow: 0 10px 30px rgba(255, 122, 89, .18);--radius: 26px;--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,#root{height:100%}body{margin:0;font-family:-apple-system,SF Pro Rounded,SF Pro Text,system-ui,Segoe UI,Roboto,sans-serif;color:var(--ink);background:linear-gradient(168deg,var(--bg1) 0%,var(--bg2) 46%,var(--bg3) 100%);background-attachment:fixed;min-height:100dvh;overscroll-behavior-y:none;-webkit-user-select:none;user-select:none}button{font-family:inherit;cursor:pointer;border:none}a{text-decoration:none;color:inherit}img{-webkit-user-drag:none}.app{max-width:480px;margin:0 auto;min-height:100%;display:flex;flex-direction:column;position:relative}.screen{flex:1;padding:calc(var(--safe-top) + 16px) 18px 92px;animation:fade .35s ease}@keyframes fade{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@keyframes pop{0%{transform:scale(.6);opacity:0}70%{transform:scale(1.12)}to{transform:scale(1);opacity:1}}@keyframes wiggle{0%,to{transform:rotate(-6deg)}50%{transform:rotate(6deg)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.h1{font-size:30px;font-weight:800;margin:4px 0 2px;letter-spacing:-.5px}.sub{color:var(--ink-soft);font-size:15px;margin:0 0 18px}.hi{display:flex;align-items:center;gap:10px}.card{background:var(--card);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);margin-bottom:16px}.book-card{display:flex;align-items:center;gap:14px;background:var(--card);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);margin-bottom:14px;position:relative;overflow:hidden;transition:transform .12s ease}.book-card:active{transform:scale(.97)}.book-cover{width:64px;height:64px;border-radius:18px;flex:none;display:grid;place-items:center;background:linear-gradient(150deg,var(--yellow),var(--orange))}.book-title{font-weight:800;font-size:17px;line-height:1.2}.book-author{color:var(--ink-soft);font-size:13px;margin-top:2px}.badge-read{position:absolute;top:10px;right:10px;background:var(--green);color:#fff;border-radius:999px;font-size:12px;font-weight:700;padding:4px 10px;display:flex;align-items:center;gap:4px}.btn{width:100%;padding:17px;border-radius:20px;font-size:18px;font-weight:800;color:#fff;background:linear-gradient(150deg,var(--orange),var(--orange-d));box-shadow:0 8px 20px #f4623b59;display:flex;align-items:center;justify-content:center;gap:10px;transition:transform .1s ease}.btn:active{transform:scale(.96)}.btn.secondary{background:linear-gradient(150deg,var(--blue),#3aa8e8);box-shadow:0 8px 20px #3aa8e84d}.btn.purple{background:linear-gradient(150deg,var(--purple),#7d4ce0);box-shadow:0 8px 20px #7d4ce04d}.btn.green{background:linear-gradient(150deg,var(--green),#34b86a);box-shadow:0 8px 20px #34b86a4d}.btn.ghost{background:#fff;color:var(--ink);box-shadow:var(--shadow)}.btn:disabled{opacity:.5}.btn-row{display:flex;flex-direction:column;gap:12px}.input{width:100%;padding:16px;border-radius:18px;font-size:17px;border:2px solid #ffe0d3;background:#fff;color:var(--ink);margin-bottom:12px;outline:none}.input:focus{border-color:var(--orange)}.label{font-weight:700;font-size:14px;margin:6px 2px;color:var(--ink-soft)}.tabbar{position:fixed;left:50%;transform:translate(-50%);bottom:0;width:100%;max-width:480px;background:#ffffffeb;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-top:1px solid rgba(0,0,0,.05);display:flex;justify-content:space-around;padding:5px 8px calc(5px + var(--safe-bottom));z-index:50}.tab{background:none;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--ink-soft);flex:1;padding:6px;border-radius:18px;position:relative}.tab.active{background:radial-gradient(circle at 50% 42%,#ffaa5a66 0,#ffaa5a00 42%)}.tab.active img{animation:pop .3s;transform:scale(1.06);filter:drop-shadow(0 0 4px rgba(255,122,89,.7))}.tab.active{color:var(--orange-d)}.tab.active img{animation:pop .3s}.q-progress{height:10px;border-radius:999px;background:#ffe0d3;overflow:hidden;margin-bottom:18px}.q-progress>div{height:100%;background:linear-gradient(90deg,var(--orange),var(--yellow));border-radius:999px;transition:width .3s}.q-text{font-size:22px;font-weight:800;line-height:1.25;margin:8px 0 20px}.opt{width:100%;text-align:left;padding:18px;border-radius:20px;background:#fff;box-shadow:var(--shadow);margin-bottom:12px;font-size:17px;font-weight:600;color:var(--ink);border:3px solid transparent;transition:transform .1s,border-color .15s}.opt:active{transform:scale(.98)}.opt.correct{border-color:var(--green);background:#eafff1}.opt.wrong{border-color:var(--pink);background:#ffeef4}.chat-screen{display:flex;flex-direction:column;height:100dvh;padding:calc(var(--safe-top) + 16px) 18px 0;box-sizing:border-box;animation:fade .35s ease}.chat-scroll{flex:1;min-height:0;overflow-y:auto;padding:4px;display:flex;flex-direction:column;gap:10px;-webkit-overflow-scrolling:touch}.bubble{max-width:80%;padding:13px 16px;border-radius:20px;font-size:16px;line-height:1.35;box-shadow:var(--shadow)}.bubble.user{align-self:flex-end;background:linear-gradient(150deg,var(--purple),#7d4ce0);color:#fff;border-bottom-right-radius:6px}.bubble.bot{align-self:flex-start;background:#fff;border-bottom-left-radius:6px}.chat-input{display:flex;gap:8px;padding:10px 0 calc(var(--safe-bottom) + 66px)}.chat-input .input{margin:0}.stars{display:flex;gap:8px;justify-content:center;margin:10px 0}.reward-pop{display:grid;place-items:center;text-align:center;gap:8px;padding:24px 0}.reward-pop img{animation:pop .5s}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.medal{background:#fff;border-radius:22px;box-shadow:var(--shadow);padding:16px 8px;text-align:center}.medal.locked{opacity:.4;filter:grayscale(1)}.medal small{display:block;font-size:11px;color:var(--ink-soft);margin-top:6px;font-weight:700}.center-col{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:70vh;text-align:center;gap:14px}.spinner{width:44px;height:44px;border:5px solid #ffe0d3;border-top-color:var(--orange);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.mascot{animation:float 3s ease-in-out infinite}.pill{display:inline-flex;align-items:center;gap:6px;background:#fff;border-radius:999px;padding:6px 12px;font-weight:700;font-size:13px;box-shadow:var(--shadow)}.err{color:var(--orange-d);font-weight:700;text-align:center;margin:8px 0}.passage{font-size:16.5px;line-height:1.5;background:#fff;border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);max-height:56vh;overflow-y:auto;-webkit-overflow-scrolling:touch}.passage b{background:var(--yellow);border-radius:6px;padding:0 3px}.rec-dot{width:14px;height:14px;border-radius:50%;background:#ff3b30;animation:blink 1s infinite}@keyframes blink{50%{opacity:.25}}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.back{background:#fff;border-radius:999px;width:42px;height:42px;display:grid;place-items:center;box-shadow:var(--shadow);font-size:20px;color:var(--ink)}.bookcover{position:relative;flex:none;border-radius:12px;display:grid;place-items:center;box-shadow:0 6px 16px #0000002e;overflow:hidden}.bookcover-spine{position:absolute;left:7px;top:0;bottom:0;width:5px;background:#ffffff59;border-radius:4px}.bookcover img{filter:drop-shadow(0 2px 3px rgba(0,0,0,.18))}.bookcover-title{position:absolute;bottom:6px;left:6px;right:6px;color:#fff;font-size:10px;font-weight:800;text-align:center;line-height:1.1;text-shadow:0 1px 2px rgba(0,0,0,.3)}.book-card{padding:14px}.tabbar{padding-top:5px}.tab{font-size:10px;gap:1px}.puzzle-board{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;background:#fff;border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);margin-bottom:18px}.glyph{font-size:44px;line-height:1}.glyph-img{display:inline-block;vertical-align:middle;object-fit:contain}.glyph-q{opacity:.5;animation:wiggle 1s ease-in-out infinite}.opt-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.opt-emoji{background:#fff;border-radius:22px;box-shadow:var(--shadow);padding:12px 0;display:grid;place-items:center;border:3px solid transparent;transition:transform .1s,border-color .15s}.opt-emoji:active{transform:scale(.95)}.opt-emoji.correct{border-color:var(--green);background:#eafff1}.opt-emoji.wrong{border-color:var(--pink);background:#ffeef4}.hint{background:#fff;border-radius:18px;padding:14px 16px;box-shadow:var(--shadow);font-weight:600;color:var(--ink);display:flex;align-items:center;gap:8px}.head-row{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.icon-btn{flex:none;background:#fff;border-radius:999px;width:46px;height:46px;display:grid;place-items:center;box-shadow:var(--shadow);transition:transform .1s;margin-top:2px}.icon-btn:active{transform:scale(.92)}.icon-btn.active{background:var(--yellow)}.search-bar{display:flex;align-items:center;gap:8px;background:#fff;border-radius:18px;padding:10px 14px;box-shadow:var(--shadow);margin:6px 0 16px}.search-input{flex:1;border:none;outline:none;font-size:17px;font-family:inherit;color:var(--ink);background:transparent}.search-clear{background:none;display:grid;place-items:center;padding:2px}.cat-title{font-size:17px;font-weight:800;margin:18px 4px 10px;color:var(--ink)}.add-btn{flex:none;background:linear-gradient(150deg,var(--orange),var(--orange-d));color:#fff;border-radius:999px;padding:9px 14px;font-size:13px;font-weight:800;display:flex;align-items:center;gap:5px;box-shadow:0 6px 14px #f4623b4d}.add-btn:active{transform:scale(.95)}.add-btn:disabled{opacity:.6}.stat-row{display:flex;gap:10px;width:100%;margin:6px 0 4px}.stat{flex:1;background:#fff;border-radius:18px;box-shadow:var(--shadow);padding:12px 6px;display:flex;flex-direction:column;align-items:center;gap:2px}.stat b{font-size:19px}.stat small{font-size:10.5px;color:var(--ink-soft);font-weight:700;text-align:center}.rec-timer{text-align:center;font-size:34px;font-weight:800;color:var(--orange-d);display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:10px}.rec-max{font-size:18px;color:var(--ink-soft);font-weight:700}.mistakes{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}.mistake-word{background:#ffeef0;color:#e0344f;border:2px solid #ffd0d8;border-radius:12px;padding:5px 11px;font-weight:700;font-size:15px}