:root{--bg:#fbf8f1;--card:#fff;--ink:#1f2a2e;--muted:#6b7378;--line:#e4ded1;--green:#2f8f5f;--green-soft:#e6f4ec;--red:#e03131;--orange:#f08c00;--blue:#1c7ed6;color:var(--ink);background:var(--bg);-webkit-tap-highlight-color:transparent;font-family:system-ui,-apple-system,Apple SD Gothic Neo,Noto Sans KR,Noto Sans CJK KR,sans-serif}*{box-sizing:border-box}body{overscroll-behavior:none;min-height:100vh;margin:0}h1,h2,h3{margin:0 0 .4em;line-height:1.3}h1{font-size:1.6rem}h2{font-size:1.3rem}h3{font-size:1.1rem}p{margin:.3em 0}.muted{color:var(--muted);font-weight:400}.small{font-size:.85rem}.big{font-size:1.2rem}.error{color:var(--red)}.notice{color:#8a5300;background:#fff4e0;border-radius:10px;padding:.5em .8em}.break{word-break:break-all}.screen{max-width:980px;margin:0 auto;padding:18px 20px 40px}.screen.wide{max-width:1180px}.screen.center{flex-direction:column;justify-content:center;align-items:center;gap:14px;min-height:100vh;display:flex}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;margin-bottom:14px;padding:18px 20px;box-shadow:0 1px 3px #0000000a}.card.narrow{width:min(460px,100%)}.row{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:10px;margin-top:12px;display:flex}.row.left{justify-content:flex-start;margin:0 0 12px}.row.nav{justify-content:space-between;margin-top:18px}.row.sticky{background:var(--bg);border-top:1px solid var(--line);justify-content:flex-end;padding:12px 0;position:sticky;bottom:0}.col{flex-direction:column;align-items:stretch;gap:8px;min-width:150px;display:flex}.grow{flex:1}.two-col{grid-template-columns:1fr 1fr;gap:14px;display:grid}@media (width<=760px){.two-col{grid-template-columns:1fr}}.btn{font:inherit;border:1.5px solid var(--line);color:var(--ink);cursor:pointer;touch-action:manipulation;background:#fff;border-radius:14px;min-height:52px;padding:12px 18px;font-size:1.05rem}.btn:disabled{opacity:.45;cursor:default}.btn.primary{background:var(--green);border-color:var(--green);color:#fff;font-weight:700}.btn.ghost{color:var(--muted);background:0 0;border-color:#0000}.btn.danger{color:var(--red)}.btn.big{min-height:60px;padding:14px 28px;font-size:1.25rem}.btn.huge{border-radius:20px;min-width:300px;padding:20px 48px;font-size:1.5rem}.btn.small{border-radius:10px;min-height:38px;padding:6px 12px;font-size:.9rem}.link{color:var(--blue);font:inherit;cursor:pointer;background:0 0;border:none;text-decoration:underline}input,select,textarea{font:inherit;border:1.5px solid var(--line);color:var(--ink);background:#fff;border-radius:10px;width:100%;padding:10px 12px;font-size:1.05rem}label{flex-direction:column;gap:6px;margin:10px 0;font-weight:600;display:flex}label.check{flex-direction:row;align-items:center;font-weight:400}label.check input{width:auto}textarea{resize:vertical;line-height:1.6}.code-input{letter-spacing:.3em;text-align:center;text-transform:uppercase;font-size:2rem}.code{letter-spacing:.12em;color:var(--green)}.tabs{border-bottom:2px solid var(--line);gap:6px;margin:6px 0 16px;display:flex}.tabs button{font:inherit;color:var(--muted);cursor:pointer;background:0 0;border:none;border-bottom:3px solid #0000;margin-bottom:-2px;padding:10px 14px;font-size:1rem}.tabs button.on{color:var(--green);border-bottom-color:var(--green);font-weight:700}.top{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.pill{background:var(--green-soft);color:var(--green);border-radius:999px;padding:4px 12px;font-weight:700}.badge{white-space:nowrap;border-radius:999px;padding:2px 9px;font-size:.8rem;font-weight:600}.badge.warn{color:#a15c00;background:#fff0d6}.badge.ok{background:var(--green-soft);color:var(--green)}.badge.info{color:var(--blue);background:#e7f1fd}.home .logo{color:var(--green);letter-spacing:-.02em;font-size:3.4rem;font-weight:800}.step{flex-wrap:wrap;align-items:center;gap:8px;margin:14px 0;display:flex}.num-grid{grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:10px;display:grid}.num-btn{min-height:80px;font-size:1.6rem;font-weight:700}.set-list{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px;display:grid}.set-btn{font:inherit;text-align:left;cursor:pointer;flex-direction:column;gap:6px;min-height:100px;font-size:1.2rem;display:flex}.write .top .dots{flex-wrap:wrap;justify-content:center;gap:6px;display:flex}.dot{background:var(--line);border-radius:50%;width:14px;height:14px}.dot.done{background:#9fd3b6}.dot.now{background:var(--green);transform:scale(1.25)}.write-head{flex-wrap:wrap;align-items:center;gap:18px;margin:8px 0 14px;display:flex}.sentence-no{margin:0;font-size:2.2rem}.btn.listen{background:#fff7e0;border-color:#ffd36b;min-width:220px;min-height:64px;font-size:1.3rem;font-weight:700}.pulse{animation:1.6s infinite pulse}@keyframes pulse{0%,to{box-shadow:0 0 #ffbe2899}50%{box-shadow:0 0 0 12px #ffbe2800}}.grid-wrap{-webkit-user-select:none;user-select:none;border-radius:6px;width:100%;overflow:hidden;box-shadow:0 2px 10px #0000000f}.toolbar{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.btn.tool.on{background:var(--green-soft);border-color:var(--green);color:var(--green);font-weight:700}.hint{color:var(--muted);margin-top:10px;font-size:.95rem}.grading{text-align:center}.spinner{border:6px solid var(--green-soft);border-top-color:var(--green);border-radius:50%;width:56px;height:56px;margin:0 auto 16px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.score-box{align-items:center;gap:24px;display:flex}.score{color:var(--red);font-family:Georgia,serif;font-size:3.6rem;font-weight:800;line-height:1}.score small{margin-left:2px;font-size:1.2rem}.score.small{font-size:2rem}.score.perfect,td.perfect{color:var(--green)}.advice{background:#fff9e6;border:1.5px dashed #f2c94c;border-radius:16px;margin-bottom:14px;padding:14px 18px}.advice-row b{color:#9a6700}.advice-row p{margin:2px 0 10px}.item.ng{border-left:6px solid var(--red)}.item.ok{border-left:6px solid var(--green)}.item-head{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px;display:flex}.mark{font-size:1.8rem;font-weight:800;line-height:1}.mark.o{color:var(--green)}.mark.x{color:var(--red)}.num{color:var(--muted);font-weight:700}.answer{font-size:1.25rem;font-weight:700}.read-as{color:var(--muted);margin-top:8px}.read-as b{color:var(--ink)}.feedback{margin:8px 0;padding-left:1.2em}.feedback li{margin:4px 0;font-size:1.05rem}.feedback li.soft{color:var(--muted)}.cell-editor{background:#fffbe6;border-radius:12px;flex-wrap:wrap;align-items:center;gap:8px;margin-top:10px;padding:8px 12px;display:flex}.cell-editor input{text-align:center;width:80px;font-size:1.5rem}.judge{flex-wrap:wrap;align-items:center;gap:6px;margin-top:10px;display:flex}.stats{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.stat span{color:var(--muted);font-size:.95rem}.stat b{margin-top:4px;font-size:2rem;display:block}.stat b small{color:var(--muted);font-size:1rem;font-weight:400}.stat.warn b{color:#c06a00}.bar-row{grid-template-columns:1fr 120px 48px;align-items:center;gap:10px;margin:8px 0;display:grid}.bar-row span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.bar{background:#f1efe9;border-radius:6px;height:12px;overflow:hidden}.bar i{background:var(--orange);border-radius:6px;height:100%;display:block}.bar-row b{text-align:right}.table{border-collapse:collapse;border:1px solid var(--line);background:#fff;border-radius:14px;width:100%;margin-top:8px;overflow:hidden}.table th,.table td{border-bottom:1px solid var(--line);text-align:left;padding:10px 12px}.table th{color:var(--muted);background:#f6f3ec;font-size:.9rem}.set-row{gap:16px;display:flex}.sentences{color:#3a4448;columns:2;margin:8px 0 0;padding-left:1.4em}.switch{flex-direction:row;align-items:center;gap:8px;margin:0}.switch input{width:22px;height:22px}.steps li{margin:6px 0}.qr{width:200px;margin:10px auto;display:block}.read-aloud .big-sentence{text-align:center;margin:12vh 0;font-size:clamp(2rem,6vw,4rem);font-weight:800;line-height:1.4}.read-aloud .n{color:var(--green)}select{width:auto}