*{box-sizing:border-box} :root{--ink:#20253b;--muted:#657087;--blue:#4250d8;--line:#e3e5ed;--paper:#fff;--bg:#f6f5f1;--green:#286b59}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 "Noto Sans CJK KR","Malgun Gothic",system-ui,sans-serif}button,input,textarea,select{font:inherit}button,a,input,textarea,select{outline-offset:4px}button{cursor:pointer;border:0}button:disabled{cursor:wait;opacity:.55}a{color:inherit}header{height:84px;max-width:1400px;margin:auto;padding:0 48px;display:flex;align-items:center;gap:26px;border-bottom:1px solid var(--line)}.brand{text-decoration:none;font-weight:800;font-size:21px;display:flex;align-items:center;gap:10px}.brandmark{display:grid;place-items:center;background:var(--blue);color:white;width:35px;height:35px;border-radius:11px}.edition{color:var(--muted);font-size:13px;flex:1}.edition i{display:inline-block;width:3px;height:3px;background:#adb2c4;border-radius:50%;margin:0 9px}.layout{max-width:1400px;margin:auto;display:grid;grid-template-columns:310px 1fr;min-height:calc(100vh - 160px)}aside{padding:48px 32px 32px 48px;border-right:1px solid var(--line)}.side-title,.eyebrow{font-size:12px;letter-spacing:.1em;font-weight:750;color:var(--blue)}h1{font-size:26px;letter-spacing:-1.2px;line-height:1.5;margin:16px 0}aside>p{color:var(--muted);font-size:14px;margin-bottom:36px}.step{display:flex;align-items:center;gap:12px;color:#7b8294;font-size:14px;padding:11px 0}.step b{display:grid;place-items:center;width:29px;height:29px;border:1px solid #d9dce6;border-radius:50%;font-size:12px}.step.active{color:var(--blue);font-weight:750}.step.active b{background:var(--blue);border-color:var(--blue);color:white}.step.done b{background:#e8ede9;border-color:#e8ede9;color:var(--green)}.side-foot{border-top:1px solid var(--line);margin-top:38px;padding-top:20px;font-size:13px}.side-foot p,.side-foot span{color:var(--muted)}.side-foot span{font-size:11px}main{min-width:0;padding:46px 52px 56px}#screen{max-width:830px;margin:auto}.eyebrow{margin-bottom:13px}h2{font-size:34px;letter-spacing:-1.3px;line-height:1.4;margin:0 0 18px}h3{margin:0 0 14px;font-size:20px;line-height:1.5}p{margin:0 0 18px}.lead{color:var(--muted);max-width:670px}.card{background:white;border:1px solid var(--line);border-radius:18px;padding:28px;margin-top:24px}.hero-card{display:flex;gap:28px;align-items:center;padding:28px;background:#eef0ff;border:1px solid #dadffc;border-radius:18px;margin:30px 0}.avatar{flex-shrink:0;width:92px;height:100px;border-radius:31px 31px 26px 26px;background:#ffe7a4;position:relative;box-shadow:inset 0 -7px #f4d88d}.avatar:before{content:"";position:absolute;top:32px;left:26px;width:8px;height:12px;background:#30364f;border-radius:5px;box-shadow:32px 0 #30364f}.avatar:after{content:"";position:absolute;top:60px;left:39px;width:14px;height:7px;border-bottom:3px solid #30364f;border-radius:50%}.student-name{color:var(--blue);font-weight:750;font-size:13px;margin-bottom:6px}.quote{font-weight:650;font-size:20px;line-height:1.6;margin:0}.tag{display:inline-block;font-size:12px;background:#eef0ff;color:var(--blue);border-radius:20px;padding:4px 10px;margin-right:6px}.tag.good{background:#e6f2eb;color:var(--green)}.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:28px 0}.mini-grid span{display:block;font-size:13px;color:var(--muted);margin-top:5px}.mini-grid b{font-size:15px}label{display:block;font-size:14px;font-weight:650;margin:18px 0 8px}input,textarea,select{width:100%;border:1px solid #cdd2e0;background:white;border-radius:10px;padding:12px 14px;color:var(--ink)}input:focus,textarea:focus{border-color:var(--blue)}textarea{resize:vertical;min-height:116px}.num-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.number-wrap{display:flex;align-items:center;gap:9px}.number-wrap span{color:var(--muted);font-size:14px}.checks{display:flex;align-items:flex-start;gap:10px;font-weight:400;font-size:13px;cursor:pointer}.checks input{width:18px;height:18px;flex-shrink:0;margin-top:3px}.primary,.secondary{padding:13px 23px;border-radius:10px;font-weight:700;min-height:48px}.primary{background:var(--blue);color:white}.primary:hover{background:#3441bd}.secondary{background:#e9eaf1;color:var(--ink)}.ghost{background:transparent;color:var(--muted);font-size:13px;padding:7px 10px}.ghost:hover{text-decoration:underline}.actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:24px}.fine{font-size:12px;color:var(--muted);margin-top:15px}.notice{background:#fff4d7;border:1px solid #ecdbac;color:#715a22;padding:13px 16px;border-radius:10px;margin:15px 0;font-size:14px}.error{background:#fff0ef;color:#982e2e;border:1px solid #ebc0ba;padding:14px;border-radius:10px;margin-bottom:20px}.busy{color:var(--blue);font-size:14px;margin-top:12px}.bubble{border-left:3px solid #d7dcf8;padding:12px 16px;margin:16px 0;background:#f7f8ff;border-radius:0 10px 10px 0}.bubble.mine{border-color:#d7e7de;background:#f1f7f3}.bubble small{color:var(--muted);font-weight:650}.bubble p{margin:4px 0 0;white-space:pre-wrap;overflow-wrap:anywhere}.exam-item{padding:25px 0;border-bottom:1px solid var(--line)}.exam-item:first-child{padding-top:0}.exam-item:last-child{border:0}.exam-num{font-size:12px;color:var(--blue);font-weight:700;margin-bottom:8px}.score-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:26px 0}.score{border:1px solid var(--line);border-radius:15px;padding:22px;background:white}.score span{display:block;color:var(--muted);font-size:13px}.score strong{font-size:35px;letter-spacing:-1px}.score small{font-size:15px;color:var(--muted);font-weight:400}.lesson{font-size:18px;line-height:1.8;background:#f0f5f2;padding:22px;border-radius:13px;margin:22px 0}.big-check{font-size:36px;background:#e4f0e9;color:var(--green);width:76px;height:76px;border-radius:50%;display:grid;place-items:center;margin-bottom:22px}details{border-bottom:1px solid var(--line);padding:16px 0}summary{cursor:pointer;font-weight:650}details p{margin:12px 0 0;color:var(--muted);font-size:14px}.answer-review{margin-top:16px;border-top:1px solid var(--line);padding-top:14px}.answer-review strong{color:var(--green)}footer{max-width:1400px;margin:auto;border-top:1px solid var(--line);padding:18px 48px;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted)}dialog{border:1px solid var(--line);border-radius:18px;max-width:600px;width:calc(100% - 32px);padding:30px;color:var(--ink)}dialog::backdrop{background:#20253b77}dialog h3{margin-bottom:16px}dialog code{display:block;background:#f3f3f7;padding:13px;overflow-wrap:anywhere;margin:15px 0}#dialog-body{margin-bottom:20px}#alerts:empty{display:none}@media(max-width:1050px){header{padding:0 24px}.layout{grid-template-columns:260px 1fr}aside{padding:35px 24px}main{padding:38px 30px}h2{font-size:29px}}@media(max-width:760px){header{height:68px;padding:0 18px;gap:12px}.brand{font-size:18px}.edition{display:none}header .ghost{margin-left:auto}.layout{display:block}aside{padding:22px 22px 10px;border-right:0;border-bottom:1px solid var(--line)}aside h1,aside>p,.side-foot,.side-title{display:none}nav{display:flex;justify-content:space-between;gap:4px}.step{font-size:10px;display:flex;flex-direction:column;gap:5px;padding:0 0 12px}.step b{width:25px;height:25px}main{padding:28px 20px 36px}h2{font-size:28px}.hero-card{gap:18px;padding:22px}.avatar{width:70px;height:82px;transform:scale(.85);margin-left:-4px}.avatar:before{left:17px}.avatar:after{left:30px}.quote{font-size:17px}.card{padding:22px}.mini-grid{gap:12px}.mini-grid b{font-size:13px}.mini-grid span{font-size:12px}.num-grid{gap:12px}.score-grid{gap:8px}.score{padding:13px}.score strong{font-size:28px}.score span{font-size:11px}footer{padding:18px 20px;display:block}footer>div{margin-top:8px}.primary,.secondary{padding:12px 18px}dialog{padding:23px}}@media print{header,aside,footer,.actions,#alerts{display:none}.layout{display:block}main{padding:0}.card,.score{break-inside:avoid}body{background:white}details{display:block}details>*{display:block}}

/* Keep Korean phrases readable in the introductory copy. */
.quote,.lead{word-break:keep-all;overflow-wrap:break-word}
