@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Noto+Sans+KR:wght@400;500;600;700;800&display=swap');
:root{--ink:#26352d;--green:#446850;--paper:#f6f5f0;--muted:#7b8178}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:'DM Sans','Noto Sans KR',sans-serif}button,select,input{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0;background:transparent;color:inherit}button:focus-visible,a:focus-visible,select:focus-visible,.card:focus-visible{outline:3px solid #c59a47;outline-offset:4px}header{max-width:1240px;margin:auto;height:100px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #dedfd5;padding:0 30px}.brand{font-size:22px;font-weight:700;text-decoration:none;color:inherit;display:flex;align-items:center;gap:12px}.logo{background:var(--green);color:white;border-radius:12px;padding:1px 10px;font-size:30px}.header-note{font-size:12px;color:var(--muted)}header button{font-size:13px}main{max-width:1160px;margin:65px auto 55px;display:grid;grid-template-columns:340px 1fr;gap:90px;padding:0 25px}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2px;color:var(--green)}h1{font-size:42px;line-height:1.45;letter-spacing:-2px;margin:20px 0}h1 span{color:#bc894b}.intro{color:var(--muted);font-size:14px;line-height:1.9}.stats{display:flex;gap:55px;margin-top:45px}.stats div{display:flex;flex-direction:column;gap:7px}.stats b{font-size:32px}.stats span,small{font-size:11px;color:var(--muted)}.rail{height:4px;background:#e2e6dc;border-radius:10px;margin:20px 0 10px}.rail i{display:block;height:100%;background:var(--green);transition:width .3s}.routine{border-left:2px solid #cfb786;padding-left:18px;margin-top:40px;font-size:12px}.routine>span{font-weight:600}.routine p{color:var(--muted);line-height:2}.textbtn{padding:0;font-size:11px;text-decoration:underline;text-underline-offset:4px;margin-top:20px}.toolbar,.filters{display:flex;justify-content:space-between;align-items:center}.tabs{display:flex;gap:6px}.tabs button{font-size:12px;padding:10px 14px;border-radius:20px;color:var(--muted)}.tabs .active{background:var(--ink);color:white}#reverse{font-size:11px;border:1px solid #d9ddd2;border-radius:8px;padding:8px}.filters{gap:10px;margin:20px 0 14px;font-size:11px;color:var(--muted)}select{border:0;background:transparent;color:var(--ink);font-size:11px;max-width:160px}#position{margin-left:auto}.card{min-height:390px;background:#fffefa;border:1px solid #e1e4d8;border-radius:24px;box-shadow:0 15px 36px #27362908;padding:27px 30px;cursor:pointer;display:flex;flex-direction:column;touch-action:pan-y;transition:transform .15s}.card:hover{transform:translateY(-2px)}.card-top,.card-bottom{display:flex;align-items:center;justify-content:space-between;font-size:10px;color:var(--muted)}#badge{background:#eef2e9;color:var(--green);padding:5px 10px;border-radius:7px}#number{font-family:monospace;color:#a0a496}.card-center{flex:1;text-align:center;padding:30px 0}.card h2{font-size:38px;letter-spacing:-1px;margin:20px 0;overflow-wrap:anywhere}#meaning{font-size:16px;margin:0 0 20px}#chunks{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}#chunks button{padding:9px 13px;background:#eef2e9;color:#3c5b43;border-radius:9px;font-size:14px}#note{font-size:11px;color:var(--muted);line-height:1.8;max-width:440px;margin:18px auto 0}#flip-hint{font-size:11px;color:#8b9084;margin-top:32px}#flip-hint span{margin-left:8px}#speak{font-size:11px;padding:6px}.grade{display:flex;gap:12px;margin:16px 0}.grade button{flex:1;padding:15px;border-radius:12px;font-size:13px}#again{border:1px solid #dedfce;background:#eeeede}#know{background:var(--green);color:white}.navigation{display:flex;align-items:center;justify-content:space-between;margin-top:18px}.navigation button{width:42px;height:42px;border:1px solid #dce0d4;border-radius:50%;font-size:19px}.navigation span{font-size:10px;color:var(--muted)}.hint{text-align:center;color:var(--muted);font-size:10px;margin-top:22px}footer{max-width:1180px;padding:24px;margin:auto;border-top:1px solid #dedfd5;display:flex;justify-content:space-between;gap:15px;font-size:10px;color:var(--muted)}footer button{font-size:10px}dialog{border:1px solid #dce0d4;border-radius:22px;width:min(720px,92vw);max-height:85vh;padding:32px;color:var(--ink);background:var(--paper)}dialog::backdrop{background:#18271b66;backdrop-filter:blur(4px)}.close{float:right;font-size:28px}dialog p,dialog li{font-size:13px;line-height:1.9}dialog h2{font-size:25px}dialog input{padding:12px;width:100%;border:1px solid #ddd;border-radius:10px;margin:10px 0}.row{display:grid;grid-template-columns:1fr 1fr;gap:15px;border-bottom:1px solid #ddd;padding:12px 0;font-size:12px;text-align:left;width:100%}.row small{display:block;font-size:10px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:12px 20px;border-radius:12px;font-size:12px;display:none}#empty{text-align:center;padding:60px 20px}#empty p{font-size:13px;color:var(--muted)}#empty button{background:var(--green);color:white;padding:12px 20px;border-radius:10px}[hidden]{display:none!important}@media(max-width:900px){main{gap:35px;grid-template-columns:260px 1fr}h1{font-size:34px}.card{padding:22px}.card h2{font-size:30px}}@media(max-width:680px){header{height:72px;padding:0 20px}.header-note{display:none}.brand{font-size:18px}main{display:flex;flex-direction:column;margin:30px auto;padding:0 20px;gap:28px}h1{font-size:29px;line-height:1.4;margin:10px 0}h1 br{display:none}.intro{font-size:12px;margin:8px 0}.intro br{display:none}.stats{margin-top:16px;gap:35px}.stats div{flex-direction:row;align-items:center}.stats b{font-size:22px}.routine,.rail,#statcaption{display:none}.textbtn{margin-top:15px}.card{min-height:350px}.card h2{font-size:32px}.tabs button{padding:9px 11px;font-size:11px}.filters{gap:5px}footer{flex-wrap:wrap;margin:0 20px;padding:20px 0}.navigation span{font-size:9px}}
.header-actions{display:flex;align-items:center;gap:14px}.header-actions #install{background:#e9eedf;border-radius:8px;padding:9px 12px}.lesson-grid{display:grid;gap:12px;margin:20px 0}.lesson-tile{border:1px solid #d8decf;padding:18px;border-radius:14px;text-align:left;background:#fffefa}.lesson-tile b{display:block;font-size:16px}.lesson-tile span{display:block;font-size:11px;color:var(--muted);margin-top:7px}.lesson-example{padding:15px;background:#e9eedf;border-radius:12px;margin:15px 0;line-height:2}.quiz-options{display:grid;gap:8px;margin:14px 0}.quiz-options button{background:#fffefa;border:1px solid #d8decf;border-radius:10px;padding:12px;text-align:left}.quiz-options button.right{background:#dce9d8}.quiz-options button.wrong{background:#f0dcd2}.lesson-actions{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}.lesson-actions button{background:var(--green);color:white;border-radius:10px;padding:12px 16px}.video-item{padding:12px 0;border-bottom:1px solid #ddd;font-size:12px}.video-item a{color:var(--green)}.video-item small{display:block;margin-top:6px}.offline-note{font-size:10px;color:var(--muted)}@media(max-width:680px){header{height:auto;min-height:90px;flex-wrap:wrap;gap:12px;padding-top:15px;padding-bottom:15px}.header-actions{gap:8px;width:100%;justify-content:space-between}.header-actions button{font-size:11px}body{padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom)}}
.channel-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:20px 0}.channel-stats div{display:flex;flex-direction:column;background:#e9eedf;border-radius:12px;padding:15px}.channel-stats b{font-size:26px}.channel-stats span{font-size:11px;color:var(--muted);margin-top:5px}.sync-state{background:#446850;color:white;padding:14px;border-radius:12px;font-size:12px}.header-actions{gap:9px}.header-actions button{font-size:11px}.lesson-grid{max-height:340px;overflow-y:auto}.video-item a{overflow-wrap:anywhere}#channel-filter{margin:10px 0 15px;border:1px solid #d8decf;border-radius:8px;padding:10px;max-width:100%}#channel-results{max-height:420px;overflow-y:auto}@media(max-width:680px){.channel-stats{grid-template-columns:repeat(2,1fr)}.header-actions{gap:5px;flex-wrap:wrap}.header-actions #install{padding:8px}.header-note{display:none}}