:root{--background:#f7f8fa;--foreground:#172237;--card:#fff;--card-foreground:#172237;--popover:#fff;--popover-foreground:#172237;--primary:#ec643d;--primary-foreground:#fff;--secondary:#edf0f5;--secondary-foreground:#172237;--muted:#edf0f5;--muted-foreground:#657084;--accent:#fcebe5;--accent-foreground:#a93617;--destructive:#c23737;--border:#e1e5eb;--input:#d4dae3;--ring:#ec643d;--radius:1rem}
*{box-sizing:border-box}body{margin:0;background:var(--background);color:var(--foreground);font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.5}button,a,input,textarea{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}button:focus-visible,a:focus-visible{outline:3px solid #ec643d;outline-offset:4px}button,a{transition:background .15s,transform .15s}h1,h2,h3,p{margin:0}a{color:inherit;text-decoration:none}.app{min-height:100vh}.topbar{height:88px;padding:0 max(6vw,24px);display:flex;align-items:center;gap:64px;background:white;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;font-size:30px;letter-spacing:-1.5px;font-weight:800}.brand-icon{background:#ec643d;color:#fff;border-radius:12px;display:grid;place-items:center;width:39px;height:39px;margin-right:10px}.orange{color:#e6633e}.topbar nav{align-self:stretch;display:flex;gap:32px}.topbar nav button{border-bottom:3px solid transparent;font-size:15px;color:#687185}.topbar nav .nav-active{border-color:#ec643d;color:#172237;font-weight:700}.avatar{margin-left:auto;border:1px solid #e6e9ef;border-radius:50%;height:38px;width:38px;display:grid;place-items:center;background:#f1f3f7;font-size:14px}.container{max-width:1200px;padding:52px 36px 72px;margin:auto}.page-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:34px;gap:20px}.eyebrow{font-size:12px;letter-spacing:1.7px;font-weight:700;color:#687185;margin-bottom:8px}h1{font-size:38px;line-height:1.2;letter-spacing:-1.4px;font-weight:750}.primary,.dark-button,.secondary{border:0;border-radius:11px;padding:13px 19px;display:inline-flex;justify-content:center;align-items:center;gap:9px;font-size:14px;font-weight:700}.primary{background:#ec643d;color:#fff}.primary:hover{background:#d95029}.dark-button{background:#172237;color:white}.secondary{background:#fff;border:1px solid var(--border);color:#253149}.dashboard-grid{display:grid;grid-template-columns:2.1fr 1fr;gap:24px}.focus-panel{padding:34px 38px;background:#e8eef6;border:1px solid #dde5ee;border-radius:20px}.pill{display:inline-flex;gap:8px;align-items:center;font-size:12px;font-weight:700;letter-spacing:.3px;color:#55657a}.focus-panel h2{font-size:39px;letter-spacing:-1.4px;line-height:1.18;margin:20px 0 15px;font-weight:750}.focus-panel em{font-style:normal;color:#d95531}.focus-panel p{color:#5c6778;font-size:15px;max-width:340px;margin-bottom:24px}.daily-panel{padding:32px;background:white;border-radius:20px;border:1px solid var(--border)}.daily-panel>svg{color:#e6643e;margin-bottom:20px}.daily-panel p{color:#667184;font-size:14px}.daily-panel strong{display:flex;align-items:baseline;gap:14px;font-size:64px;line-height:1.35;margin-bottom:18px;font-weight:500;letter-spacing:-3px}.daily-panel strong span{font-size:14px;letter-spacing:0;color:#687185;font-weight:400}.library{margin-top:42px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}.section-heading h2{font-size:22px;font-weight:700;letter-spacing:-.5px}.section-heading>span{font-size:14px;color:#748095}.deck-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.new-deck{min-height:214px;border:1.5px dashed #cbd2de;border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:28px;gap:13px;background:transparent}.new-deck svg{color:#e6633e}.new-deck strong{font-size:16px}.new-deck span{font-size:14px;color:#758094;max-width:230px}footer{padding:24px 6vw;border-top:1px solid var(--border);color:#7b8595;font-size:14px;display:flex;gap:18px}footer>span{font-size:12px}
@media(max-width:700px){.topbar{height:72px;padding:0 20px;gap:22px}.brand{font-size:26px}.brand-icon{width:33px;height:33px;border-radius:10px}.topbar nav{gap:18px}.topbar nav button{font-size:14px}.avatar{display:none}.container{padding:32px 20px 48px}.page-heading{align-items:flex-start;gap:12px;margin-bottom:24px}h1{font-size:30px}.eyebrow{font-size:12px;letter-spacing:.5px}.page-heading .primary{font-size:0;padding:12px}.page-heading .primary svg{width:22px;height:22px}.dashboard-grid{grid-template-columns:1fr;gap:16px}.focus-panel{padding:28px}.focus-panel h2{font-size:34px}.daily-panel{padding:24px;display:grid;grid-template-columns:1fr auto;gap:8px}.daily-panel>svg{display:none}.daily-panel strong{grid-column:2;grid-row:1/3;font-size:40px;margin:0;align-items:center;letter-spacing:-1px}.daily-panel strong span{display:none}.daily-panel p:last-child{font-size:12px;max-width:250px}.deck-grid{grid-template-columns:1fr}.section-heading{align-items:start}.section-heading>span{font-size:12px}.library{margin-top:32px}.new-deck{min-height:150px}}
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0}.text-button:hover{color:#d75530}.full{width:100%}.muted{color:#6b7688}.helper{font-size:12px;line-height:1.6;color:#7b8596;margin-top:12px}.error{color:#c0392b;font-size:14px;margin:10px 0}.loading{padding:50px;text-align:center}.nav-count{font-size:12px;background:#fcece6;color:#bc4827;padding:2px 7px;border-radius:6px;margin-left:7px}.topbar .icon-button{margin-left:auto}.focus-panel{position:relative;overflow:hidden;background:#e8eef6}.focus-panel h2{font-size:43px;margin:22px 0 16px}.focus-panel .dark-button{margin-top:3px}.focus-panel .pill{font-size:12px;letter-spacing:1px}.daily-panel{display:flex;flex-direction:column}.daily-panel strong{font-size:76px;line-height:1.15;margin:12px 0 18px}.daily-foot{margin-top:auto;padding-top:22px;display:flex;justify-content:space-between;font-size:12px;color:#829087;border-top:1px solid #e9edf2}.daily-panel>p:last-of-type{margin-bottom:20px;max-width:200px}.stats-strip{display:flex;gap:32px;padding:22px 2px;border-bottom:1px solid #e2e6ed}.stats-strip>span{display:flex;align-items:center;gap:7px;font-size:14px;color:#7a8496}.stats-strip strong{color:#273449}.stats-strip svg{color:#929caf;margin-right:3px}.library{margin-top:32px}.count{margin-left:7px;font-size:13px;font-weight:500;background:#e9edf3;padding:3px 8px;border-radius:6px;color:#748095;vertical-align:middle}.library-controls{display:flex;gap:25px;align-items:center}.search-box{display:flex;align-items:center;gap:8px;padding:0 12px;background:white;border:1px solid #dfe4ec;border-radius:10px;color:#8c97a8}.search-box input{width:150px;border:0;background:none;font-size:14px;padding:10px 0;min-height:40px}.search-box input:focus{box-shadow:none}.filter-row{display:flex;gap:8px;margin-bottom:22px;flex-wrap:wrap}.filter-row button{padding:8px 13px;border-radius:8px;display:flex;align-items:center;gap:6px;color:#7a8495;font-size:13px}.filter-row button.selected{background:#172237;color:white}.deck-tile{--deck:#637da6;background:white;border:1px solid #e1e5ed;border-radius:15px;padding:23px;text-align:left;min-height:235px;display:flex;flex-direction:column;transition:transform .16s,box-shadow .16s}.deck-tile:hover{transform:translateY(-3px);box-shadow:0 10px 25px #1722370b;border-color:#b8c6da}.deck-tile.orange{--deck:#dc784e;color:inherit}.deck-tile.purple{--deck:#8a6cae}.deck-tile.green{--deck:#518c7a}.deck-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:23px}.deck-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:11px;background:#edf2f9;color:#637da6}.orange .deck-icon{background:#fff0e7;color:#ce744e}.purple .deck-icon{background:#f2eefa;color:#896eaa}.green .deck-icon{background:#eaf4ee;color:#518c7a}.tiny-tag{font-size:12px;color:#8590a2;background:#f4f6f9;border-radius:6px;padding:3px 7px}.deck-tile h3{font-size:18px;line-height:1.4;font-weight:650;letter-spacing:-.4px;margin-bottom:8px;overflow-wrap:anywhere}.deck-tile>p{font-size:13px;color:#7c8697;line-height:1.6;margin-bottom:25px}.deck-bottom{display:flex;justify-content:space-between;gap:12px;margin-top:auto;font-size:12px;color:#8190a3;margin-bottom:9px}progress{appearance:none;width:100%;height:4px;border:0;display:block;background:#edf0f5;border-radius:20px;overflow:hidden}progress::-webkit-progress-bar{background:#edf0f5;border-radius:20px}progress::-webkit-progress-value{background:var(--deck,#e6633e);border-radius:20px}progress::-moz-progress-bar{background:#e6633e;border-radius:20px}.new-deck{background:#f8f9fb;color:#8b96a8;min-height:235px;gap:14px}.new-deck strong{color:#536179;font-weight:500}.new-deck svg{padding:8px;width:44px;height:44px;background:#edf0f5;border-radius:50%;color:#8b96a8}.new-deck:hover{border-color:#e6633e;background:white}.new-deck span{font-size:13px;line-height:1.7}.footer-sync{margin-left:auto;display:flex;align-items:center;gap:6px}.auth-wrap{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;background:#edf1f7}.auth-wrap>.brand{margin-bottom:36px}.auth-card{width:100%;max-width:450px;padding:40px;background:white;border:1px solid #e2e7ee;border-radius:22px;box-shadow:0 20px 60px #17223707}.auth-symbol{color:#e6633e;background:#fff0e9;width:58px;height:58px;border-radius:17px;display:grid;place-items:center;margin-bottom:25px}.auth-card h1{font-size:34px;margin-bottom:14px}.auth-card .eyebrow{font-size:12px;letter-spacing:1px}.auth-card .muted{font-size:15px;margin-bottom:28px}.auth-card form label{display:block;margin-bottom:7px}.key-field{position:relative;display:flex;align-items:center}.key-field input{padding-right:65px}.key-field button{position:absolute;right:13px}.auth-card .secondary{margin-top:12px;font-size:13px}.auth-note{font-size:13px;color:#8d98a9;margin-top:26px}.back-link{display:flex;align-items:center;gap:7px;color:#778295;font-size:14px;margin-bottom:26px}.description{font-size:16px;margin-top:12px}.detail-label{font-size:12px;letter-spacing:1px;color:#71829a;display:flex;align-items:center;gap:8px;margin-bottom:13px}.actions{display:flex;align-items:center;gap:8px}.danger{color:#bc6060}.mode-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-bottom:25px}.mode-tile{background:white;border:1px solid #dfe5ee;border-radius:15px;text-align:left;padding:25px}.mode-tile svg{color:#e6633e;margin-bottom:16px}.mode-tile h3{font-size:19px;margin-bottom:7px}.mode-tile p{color:#7b8799;font-size:14px}.mode-tile:hover{border-color:#e6633e;background:#fffaf7}.set-progress{padding:22px 25px;display:flex;gap:30px;align-items:center;border:1px solid #e1e6ed;border-radius:13px;margin-bottom:40px}.set-progress>div{min-width:230px}.set-progress strong{display:block;font-size:15px}.set-progress span{font-size:12px;color:#8390a2}.set-progress progress{flex:1}.set-progress .secondary{white-space:nowrap;font-size:13px}.card-list{display:flex;flex-direction:column;gap:10px}.card-row{display:grid;grid-template-columns:25px 1fr 1.3fr 40px 70px;align-items:center;gap:22px;padding:24px;background:white;border:1px solid #e4e8ef;border-radius:12px;font-size:15px}.card-row>div{overflow-wrap:anywhere;white-space:pre-wrap}.card-row>div:nth-of-type(2){color:#6f7c91}.row-number{font-size:12px;color:#a0a9b7}.level{font-size:12px;padding:4px 7px;background:#f1f3f7;color:#8b96a6;border-radius:5px;text-align:center}.level.learned{background:#e8f5ee;color:#467c65}.starred{color:#dc9a39}.starred svg{fill:#f9e6bd}.editor-meta{background:white;padding:28px;border:1px solid #e1e6ee;border-radius:15px;margin-bottom:32px;display:grid;gap:20px}.editor-meta label>input{display:block;margin-top:8px}.optional{font-size:12px;color:#8b97a7;font-weight:400;margin-left:7px}.color-options{padding:0;margin:0;border:0;display:flex;gap:12px}.color-options legend{font-size:13px;font-weight:500;margin-bottom:10px}.color-option{position:relative;width:29px;height:29px}.color-option input{position:absolute;opacity:0;inset:0;margin:0;width:29px;height:29px;min-height:0;cursor:pointer}.color-option span{display:block;width:25px;height:25px;border-radius:50%;background:#9bafd0;border:4px solid white;box-shadow:0 0 0 1px #dfe5ed}.color-option.orange span{background:#e6a17c}.color-option.purple span{background:#b69bcf}.color-option.green span{background:#84b39e}.color-option input:checked+span{box-shadow:0 0 0 2px #26364e}.color-option input:focus-visible+span{outline:3px solid #e6633e;outline-offset:4px}.editor-cards{display:flex;flex-direction:column;gap:14px}.editor-row{display:grid;grid-template-columns:25px 1fr 1fr 35px;align-items:center;gap:22px;background:white;padding:24px;border:1px solid #e1e6ee;border-radius:13px}.editor-row label{font-size:12px;letter-spacing:1px;font-weight:600;color:#7a8596}.editor-row textarea{display:block;margin-top:8px;font-size:16px;letter-spacing:0;font-weight:400}.add-card{border:1.5px dashed #cfd7e2;border-radius:12px;padding:20px;display:flex;justify-content:center;align-items:center;gap:10px;width:100%;margin-top:18px;color:#697a91;font-size:15px}.editor-footer{margin-top:25px;display:flex;justify-content:flex-end;gap:12px}.review-banner{display:flex;align-items:center;gap:25px;padding:32px;background:#e8eef6;border:1px solid #dce4ee;border-radius:18px;margin-bottom:35px}.review-number{font-size:70px;font-weight:500;letter-spacing:-3px;color:#526987}.review-banner h2{font-size:24px;letter-spacing:-.5px}.review-banner p{font-size:14px;color:#728198}.review-banner .primary{margin-left:auto}.empty-state{text-align:center;padding:65px 20px}.empty-state>svg{margin:0 auto 20px;color:#649482}.empty-state h2{font-size:24px}.empty-state p{color:#8a95a5;margin:14px 0 25px}.study-heading{display:flex;align-items:center;gap:20px;max-width:830px;margin:auto}.study-heading h2{font-size:18px;font-weight:600;overflow-wrap:anywhere}.study-heading .eyebrow{font-size:12px}.study-count{margin-left:auto;white-space:nowrap;font-size:14px;color:#8b95a7}.study-progress{max-width:830px;margin:25px auto 0;height:5px}.study-toolbar{max-width:740px;margin:28px auto 14px;display:flex;justify-content:space-between;align-items:center}.study-toolbar>div{display:flex;gap:5px}.study-area{max-width:740px;margin:auto}.flashcard{width:100%;min-height:350px;display:flex;flex-direction:column;align-items:center;justify-content:space-between;padding:30px 45px 25px;background:white;border:1px solid #dce3ee;border-radius:20px;box-shadow:0 12px 35px #17223705;transition:background .18s,border-color .18s}.flashcard.flipped{background:#edf3fa;border-color:#bdcde1}.card-side{font-size:12px;color:#9aa6b6;letter-spacing:2px}.flash-text{font-size:32px;line-height:1.4;letter-spacing:-.6px;white-space:pre-wrap;overflow-wrap:anywhere;max-width:100%;padding:35px 0;font-weight:500}.flip-hint{display:flex;gap:7px;align-items:center;font-size:12px;color:#98a3b2}.answer-actions{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:23px}.answer-actions button{min-height:55px;font-size:15px;font-weight:600}.know{background:#416f60}.know:hover{background:#355c50}.dont-know{color:#b67155}.answer-actions kbd{font-size:12px;margin-left:auto;padding:2px 5px;border:1px solid #ffffff50;border-radius:4px;opacity:.7}.dont-know kbd{border-color:#e3d5cd}.study-note{text-align:center;font-size:12px;color:#9aa4b3;margin-top:24px}.typed-row{display:flex;gap:12px;margin-top:22px}.typed-row input{flex:1;min-width:0}.skip{display:block;margin:12px auto}.choices{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:20px}.choice{text-align:left;background:white;border:1px solid #dfe5ee;border-radius:12px;padding:18px;display:flex;gap:12px;align-items:center;font-size:15px;overflow-wrap:anywhere}.choice>span{font-size:12px;color:#8997ac;background:#eff2f7;border-radius:5px;padding:4px 8px}.choice:hover:not(:disabled){border-color:#e6633e}.choice.correct,.feedback.correct{background:#eaf5ef;border-color:#a9ceba;color:#3c6e57}.choice.incorrect,.feedback.incorrect{background:#fff0eb;border-color:#e5baa9;color:#a8654d}.choice:disabled{opacity:1}.feedback{padding:22px;border:1px solid;margin-top:20px;border-radius:13px}.feedback strong{display:flex;gap:8px;align-items:center;font-size:15px}.feedback p{font-size:15px;margin:10px 0}.feedback-actions{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:15px}.feedback-actions .primary{margin-left:auto}.results{text-align:center;padding:25px 0 55px}.success-icon{display:grid;place-items:center;background:#e5f0e9;color:#527662;width:72px;height:72px;border-radius:50%;margin:0 auto 25px}.results h1{margin:10px 0 12px}.result-score{font-size:100px;letter-spacing:-6px;line-height:1.2;margin:32px 0;color:#426f5e}.result-score>span{font-size:40px;letter-spacing:-2px}.result-stats{display:flex;justify-content:center;gap:45px;margin:0 auto 32px}.result-stats>div{display:flex;flex-direction:column;gap:4px}.result-stats strong{font-size:27px}.result-stats span{font-size:13px;color:#8995a6}.result-actions{display:flex;gap:12px;justify-content:center}.result-row{grid-template-columns:1fr 1fr}.empty-message{color:#8591a3;font-size:15px;padding:30px}
dialog{padding:30px;border:1px solid #e0e5ee;border-radius:18px;width:min(580px,calc(100% - 32px));max-height:90vh;overflow:auto;color:#25334a;background:white;margin:auto;box-shadow:0 30px 90px #17223730}dialog::backdrop{background:#17223777;backdrop-filter:blur(3px)}.modal-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:18px}.modal-head h2{font-size:22px;font-weight:650;letter-spacing:-.5px}.modal-head .icon-button{margin-right:-8px}.modal-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:26px}.import-label{display:block;margin:20px 0 8px}.import-text{margin-top:14px;font-size:14px}.import-ready{display:flex;gap:8px;align-items:center;color:#4b856c;font-size:14px;margin:20px 0 12px}.import-sample{margin-bottom:20px}.import-sample>div{display:grid;grid-template-columns:1fr 1fr;gap:20px;border-bottom:1px solid #edf0f5;padding:10px;font-size:13px}.import-sample span{color:#7b899c}.delete-confirm{background:#bd5353}.account-info{display:flex;gap:15px;align-items:flex-start}.account-info>svg{color:#e6633e}.account-info p{font-size:15px;color:#6d7b90}#toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,20px);opacity:0;pointer-events:none;transition:.2s;background:#24334b;color:white;padding:14px 22px;border-radius:11px;font-size:14px;max-width:calc(100% - 32px);width:max-content;box-shadow:0 6px 30px #17223725;z-index:100}#toast.show{opacity:1;transform:translate(-50%,0)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:900px){.deck-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.container{padding:35px 25px 50px}.set-progress{gap:18px;flex-wrap:wrap}.set-progress progress{min-width:150px}.set-progress .secondary{margin-left:auto}.card-row{gap:15px;grid-template-columns:18px 1fr 1.2fr 30px}.card-row .level{display:none}.focus-panel h2{font-size:38px}}
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.word-list-removal{font-size:14px;line-height:1.7;color:#b94030;margin:10px 0}