:root{color-scheme:light;--paper:#f6f3ec;--surface:#fffdf8;--ink:#263a31;--muted:#71786e;--line:#e1e3d8;--green:#3d5b48;--light:#eaf0e5;--gold:#a27733;--amber:#f7edda;--red:#a64838;--pink:#fcf0ec}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.6 -apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic",sans-serif}button,input,select{font:inherit;color:inherit;touch-action:manipulation}button{cursor:pointer;border:1px solid var(--line);background:var(--surface);border-radius:11px;padding:10px 16px;min-height:44px;transition:background .15s}button:hover:not(:disabled){background:var(--light)}button:disabled{cursor:default;opacity:.42}button.primary,.rating-done{background:var(--green);border-color:var(--green);color:white}button.primary:hover:not(:disabled),.rating-done:hover:not(:disabled){background:#294334}button.plain{background:transparent;border-color:transparent}button.small{font-size:13px;padding:6px 11px;min-height:36px}button.danger{color:var(--red)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #91ad91;outline-offset:3px}input,select{width:100%;min-width:0;min-height:44px;border:1px solid var(--line);border-radius:9px;padding:9px 12px;background:var(--surface)}input[type=checkbox]{width:18px;min-height:18px;accent-color:var(--green)}h1,h2,h3,p{margin:0}h1{font-size:21px;line-height:1.35;letter-spacing:-.05em}h2{font-size:22px}h3{font-size:16px}a{color:var(--green)}[hidden]{display:none!important}.main{width:100%;max-width:760px;margin:0 auto;padding:22px 28px 20px}.top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.brand-mark{font:11px Georgia,serif;letter-spacing:.16em;color:var(--gold);margin-bottom:2px}.top-actions button{font-size:13px}.toolbar{margin-bottom:14px}.tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;background:#e6eadf;padding:4px;border-radius:13px}.tab{border:0;background:transparent;font-size:16px;min-height:46px}.tab[aria-selected=true]{background:var(--surface);box-shadow:0 2px 6px #243b3010;font-weight:600}.scope-row{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:12px}.scope-row select{background:transparent;border:0;max-width:270px;padding:5px 24px 5px 0;font-size:13px;min-height:36px}.session-meter{text-align:right;flex:none;width:132px;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}.track{height:3px;background:#dfe5d7;border-radius:10px;overflow:hidden;margin-top:6px}.fill{height:100%;background:var(--green);width:0;transition:width .2s}.session-meter .track{width:100px;margin-left:auto}.card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:30px 32px;box-shadow:0 10px 30px #243b3007}.word-area{text-align:center;padding:12px 0 8px}.word{font:clamp(34px,6vw,54px)/1.2 Georgia,"Times New Roman",serif;letter-spacing:-.02em;overflow-wrap:anywhere}.pos{font-size:13px;color:var(--muted);margin-top:7px}.audio-controls{display:flex;justify-content:center;margin-top:14px}.audio-controls button{font-size:12px;min-height:34px;padding:4px 10px}.audio-message{font-size:11px;color:var(--muted);margin-top:4px;height:18px;line-height:18px;overflow:auto}.answer-area{border-top:1px solid var(--line);margin-top:18px;padding-top:23px;text-align:center;height:112px;overflow:auto}.meaning{font-size:22px;line-height:1.6;word-break:keep-all;overflow-wrap:anywhere}.word-note{font-size:12px;color:var(--muted);margin-top:9px;overflow-wrap:anywhere}.reveal{min-width:150px}.ratings{display:grid;grid-template-columns:1fr 1.4fr;gap:10px;margin-top:14px}.rating{min-height:52px;font-size:15px}.rating-again{background:transparent;color:var(--muted)}.key{font-size:11px;opacity:.6;margin-left:7px}.navigation{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:10px}.navigation button{font-size:12px;min-height:36px;padding:5px 10px}.keyboard-hints{font-size:11px;text-align:center;color:var(--muted);margin-top:18px}.hint,.muted,small{color:var(--muted)}.hint{font-size:12px}.quiz-options{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:23px}.quiz-option{text-align:left;display:flex;gap:11px;align-items:center;min-height:65px;padding:12px 14px;font-size:14px;overflow-wrap:anywhere}.option-num{font:20px Georgia,serif;color:var(--muted);flex:none}.quiz-option.correct{background:#e3f0df;border-color:#8faa85;color:#274c2d;opacity:1}.quiz-option.incorrect{background:var(--pink);border-color:#d39488;color:var(--red);opacity:1}.quiz-feedback-slot{height:64px;margin-top:14px}.quiz-feedback{height:100%;overflow:auto;padding:10px 12px;border-radius:9px;background:var(--light);font-size:13px;line-height:21px;overflow-wrap:anywhere}.quiz-feedback.wrong{background:var(--pink)}.quiz-score{font-size:12px;color:var(--muted)}#panel-quiz .navigation{display:grid;grid-template-columns:88px minmax(0,1fr) auto;height:44px}#auto-next-note{height:32px;line-height:16px;overflow:auto;text-align:center}#quiz-next{min-width:74px}#quiz-score{height:32px;line-height:16px;display:flex;align-items:center;overflow:auto}.empty,.complete{text-align:center;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:45px 24px}.empty p,.complete p{color:var(--muted);margin:12px 0 22px}.complete-icon{font:44px Georgia,serif;color:var(--green);margin-bottom:12px}.completion-summary{display:flex;gap:16px;justify-content:center;font-size:13px;margin-bottom:24px}.complete button{margin:4px}.notice{font-size:12px;background:var(--amber);padding:10px 14px;border-radius:8px;margin-bottom:16px}.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);padding:12px 18px;background:var(--ink);color:white;z-index:30;border-radius:10px;font-size:13px;max-width:calc(100% - 24px);pointer-events:none}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
dialog{background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:18px;width:calc(100% - 32px);max-width:560px;max-height:85dvh;overflow:auto;padding:24px;box-shadow:0 30px 80px #0003}dialog::backdrop{background:#243b3070}.dialog-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.dialog-close{min-height:36px;padding:4px 10px}.field-label{display:block;color:var(--muted);font-size:12px;margin-bottom:5px}dialog label{display:block;margin:14px 0}dialog p{font-size:13px;color:var(--muted);margin:12px 0}dialog hr{border:0;border-top:1px solid var(--line);margin:19px 0}.settings-row,.filters{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}.search-field{grid-column:span 2}.check{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}dialog label.check{display:flex}.dialog-actions{display:flex;gap:8px;flex-wrap:wrap}.menu-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}.menu-actions button{font-size:13px}.stats{display:flex;justify-content:space-between;gap:12px;padding:14px 0;font-size:12px;color:var(--muted)}.stat-value{color:var(--ink);font-weight:600;margin-right:4px}.selection-count{font-size:12px;color:var(--muted);margin:10px 0}.advanced summary{font-size:13px;color:var(--muted);cursor:pointer;padding:8px 0}.inline{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.word-list{border-top:1px solid var(--line)}.list-item{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:16px 0;border-bottom:1px solid var(--line)}.list-word{font:23px/1.3 Georgia,serif;overflow-wrap:anywhere}.list-meta{font-size:11px;color:var(--muted);margin-top:5px}.list-meaning{font-size:14px}.list-actions{grid-column:span 2;display:flex;align-items:center;gap:5px;justify-content:flex-end}.list-actions select{width:110px;font-size:12px;min-height:36px;padding:5px}.list-actions button{min-height:36px;font-size:12px}.list-top,.pagination{display:flex;justify-content:space-between;gap:10px;align-items:center;font-size:12px;margin:15px 0}.list-hide .list-meaning{color:transparent;user-select:none;background:#e7eade;border-radius:5px}.list-hide .list-item:focus-within .list-meaning,.list-hide .list-item:hover .list-meaning{color:var(--ink);background:transparent}.sources{font-size:12px;line-height:2}
@media(max-width:480px){.main{padding:18px 16px}.top{margin-bottom:19px}h1{font-size:19px}.card{padding:22px 20px}.word-area{padding-top:10px}.meaning{font-size:20px}.quiz-options{grid-template-columns:1fr;gap:8px;margin-top:18px}.quiz-option{min-height:51px;padding:10px 12px}.key,.keyboard-hints{display:none}.scope-row select{max-width:220px}.ratings{gap:8px}.session-meter{width:118px}.session-meter .track{width:70px}.hint{font-size:11px}dialog{padding:20px}.stats{gap:7px;font-size:11px}.list-item{grid-template-columns:1fr}.list-actions{grid-column:auto}.settings-row{grid-template-columns:1fr}.filters{gap:0 8px}}
@media(max-width:480px){.card{padding:18px 20px}.word-area{padding-top:6px}.audio-controls{margin-top:10px}.quiz-option{min-height:48px}.quiz-options{margin-top:16px}}
@media(max-width:480px) and (max-height:700px){.main{padding-top:12px}.top{margin-bottom:12px}.tab{min-height:40px}.toolbar{margin-bottom:12px}.scope-row{margin-bottom:10px}.card{padding:16px 18px}.word-area{padding:2px 0}.word{font-size:32px}.pos{margin-top:4px}.audio-controls{margin-top:6px}.audio-controls button{min-height:30px}.quiz-options{gap:6px;margin-top:12px}.quiz-option{min-height:45px;padding:8px 12px}.quiz-feedback-slot{margin-top:10px}.quiz-feedback{padding:9px 12px}}
@media(max-width:480px){.top{margin-bottom:16px}.toolbar{margin-bottom:14px}.scope-row{margin-bottom:10px}#panel-quiz .word-area{padding:2px 0}#panel-quiz .pos{margin-top:3px}#panel-quiz .audio-controls{margin-top:4px}#panel-quiz .audio-controls button{min-height:30px}#panel-quiz .audio-message{margin-top:0}.quiz-feedback-slot{margin-top:10px;height:60px}}
@media(max-width:480px) and (max-height:700px){.top{margin-bottom:10px}.toolbar{margin-bottom:10px}.main{padding-bottom:12px}#panel-quiz .card{padding:12px 16px}#panel-quiz .quiz-options{margin-top:8px}.quiz-feedback-slot{height:54px}.quiz-feedback{padding:6px 10px}.navigation{margin-top:8px}}
@media(min-width:481px) and (max-height:750px){.main{padding:16px 28px 14px}.top{margin-bottom:14px}.toolbar{margin-bottom:12px}.scope-row{margin-bottom:8px}.card{padding:22px 28px}.word-area{padding:4px 0}.word{font-size:clamp(32px,5vw,42px)}.pos{margin-top:5px}.audio-controls{margin-top:8px}.quiz-options{margin-top:16px}.quiz-option{min-height:55px;padding:10px 14px}.quiz-feedback-slot{height:60px;margin-top:10px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}

.progress-card{text-align:center}.progress-card h2{font-size:18px}.progress-card .muted{font-size:13px;margin-top:4px}.progress-ring{width:220px;height:220px;border-radius:50%;margin:24px auto;display:grid;place-items:center;background:conic-gradient(#dfe5d7 0 100%)}.ring-center{width:174px;height:174px;border-radius:50%;background:var(--surface);display:flex;flex-direction:column;justify-content:center;line-height:1.3}.ring-center strong{font-size:39px;letter-spacing:-.04em;font-variant-numeric:tabular-nums}.ring-center span{font-size:12px;color:var(--muted);margin-top:6px}.progress-legend{display:grid;grid-template-columns:1fr 1fr;gap:12px 20px;text-align:left;max-width:400px;margin:auto}.legend-item{display:flex;align-items:center;gap:8px;font-size:13px}.legend-item strong{margin-left:auto;font-variant-numeric:tabular-nums}.legend-dot{width:9px;height:9px;border-radius:50%;flex:none}.progress-footer{display:flex;justify-content:center;gap:28px;border-top:1px solid var(--line);margin-top:24px;padding-top:18px;font-size:12px;color:var(--muted)}.progress-footer strong{display:block;color:var(--ink);font-size:21px}.pwa-settings{margin-top:18px;border-top:1px solid var(--line);padding-top:16px}.pwa-settings p{margin:8px 0;font-size:12px}.progress-card .hint{margin-top:20px}.progress-card .track{margin-top:12px}
@media(max-width:480px){.progress-ring{width:200px;height:200px;margin:20px auto}.ring-center{width:158px;height:158px}.progress-legend{gap:12px}.progress-footer{gap:24px}}
.study-charts{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px}.study-charts .progress-ring{width:168px;height:168px;margin:16px auto}.study-charts .ring-center{width:132px;height:132px}.study-charts .ring-center strong{font-size:30px}.study-charts .progress-legend{grid-template-columns:1fr;gap:8px}.track-stat h3{font-size:15px}.progress-footer{gap:24px}@media(max-width:480px){.study-charts{gap:16px}.study-charts .progress-ring{width:min(124px,100%);height:auto;aspect-ratio:1}.study-charts .ring-center{width:79%;height:79%}.study-charts .ring-center strong{font-size:25px}.study-charts .ring-center span{font-size:10px}.study-charts .legend-item{font-size:11px;gap:5px}.progress-footer{gap:18px}}
.quiz-type{height:22px;line-height:22px;font-size:12px;color:var(--muted);overflow:hidden}.quiz-prompt{height:82px;display:grid;place-items:center;overflow:auto}.quiz-prompt .meaning-prompt{font-family:inherit;font-size:22px;line-height:1.5;word-break:keep-all}.quiz-prompt .word{width:100%}@media(max-width:480px){.quiz-prompt{height:64px}.quiz-prompt .meaning-prompt{font-size:20px}}
@media(max-width:480px) and (max-height:700px){.quiz-prompt{height:54px}.quiz-prompt .meaning-prompt{font-size:18px}.quiz-type{height:18px;line-height:18px;font-size:11px}}
.quiz-option{height:70px;min-height:0}.quiz-option>span:last-child{flex:1;min-width:0;max-height:100%;overflow:auto}#quiz-next{width:112px;min-width:112px}@media(max-width:480px){.quiz-option{height:60px;min-height:0}}@media(max-width:480px) and (max-height:700px){.quiz-option{height:50px;min-height:0}.quiz-feedback-slot{height:44px}.quiz-prompt{height:44px}}
@media(max-width:480px) and (max-height:700px){#panel-quiz .card{padding:8px 16px}#panel-quiz .quiz-options{gap:4px}.quiz-feedback-slot{height:40px;margin-top:4px}}
#panel-quiz .navigation #quiz-unknown{width:100%;min-width:0;min-height:44px;padding:5px 4px;white-space:nowrap;color:var(--muted)}
#session-position{display:block;height:20px;line-height:20px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.study-heading{display:flex;align-items:center;gap:10px;min-width:0}.library-back{display:flex;align-items:center;justify-content:center;flex:none;width:32px;min-height:36px;color:var(--muted);text-decoration:none;font-size:18px;border-radius:8px}.library-back:hover{background:var(--light)}

.extra-slot{height:52px;margin-top:8px}.extra-slot button{margin:0}.complete h2,.empty h2{min-height:64px;line-height:32px}.complete #complete-text,.empty p{height:88px;overflow:auto;margin:12px 0 22px}
@media(max-width:480px){.complete,.empty{padding:26px 20px}.complete-icon{line-height:56px;margin-bottom:8px}.complete h2,.empty h2{min-height:56px;line-height:28px;font-size:21px}.complete #complete-text,.empty p{height:68px;margin-bottom:16px}.completion-summary{margin-bottom:16px}}

.top-actions{display:flex;align-items:center;gap:4px;flex:none}.top-actions #more-open{padding:10px 8px}.study-heading>div{min-width:0}.study-heading h1{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}@media(max-width:360px){.top{gap:6px}.study-heading{gap:6px}.library-back{width:24px}.study-heading h1{font-size:17px}}