:root{--ink:#17231f;--muted:#69736e;--paper:#f4f1e8;--card:#fffdf8;--line:#d8d4c9;--accent:#174f43;--soft:#cfe6dc;--mark:#ffd969;--shadow:0 18px 50px rgba(23,35,31,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:radial-gradient(circle at 8% 0,rgba(255,217,105,.2),transparent 28rem),linear-gradient(90deg,transparent 31px,rgba(23,79,67,.035) 32px),var(--paper);background-size:auto,32px 32px,auto;font-family:Pretendard,"Noto Sans KR",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}body.note{--accent:#694f91;--soft:#e7def1;--mark:#d6c2ea}body.t3{--accent:#315571;--soft:#d9e7f0;--mark:#b9dce5}button,input,textarea,select{font:inherit}button{cursor:pointer}a{color:inherit}.topbar{height:70px;padding:0 clamp(18px,5vw,70px);display:flex;align-items:center;justify-content:space-between;gap:20px;position:sticky;top:0;z-index:10;background:rgba(244,241,232,.9);border-bottom:1px solid rgba(23,35,31,.12);backdrop-filter:blur(14px)}.brand{display:flex;align-items:center;gap:11px;text-decoration:none}.brand-mark{width:34px;height:34px;display:grid;place-items:center;color:white;background:var(--accent);border-radius:10px;font:800 18px/1 Georgia,serif;transform:rotate(-3deg)}.brand strong{font-size:13px;letter-spacing:.14em}.top-nav{display:flex;gap:16px;align-items:center;color:var(--muted);font-size:12px}.top-nav a{text-decoration:none}.top-nav .active{color:var(--accent);font-weight:800}.page{width:min(1120px,calc(100% - 40px));margin:auto;padding:68px 0 100px}.lesson-head{display:grid;grid-template-columns:1fr 240px;align-items:end;gap:38px;margin-bottom:40px}.eyebrow{margin:0 0 12px;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:.17em;text-transform:uppercase}.lesson-head h1{margin:0;max-width:780px;font:500 clamp(42px,7vw,74px)/1.03 Georgia,"Times New Roman",serif;letter-spacing:-.052em}.lesson-head h1 em{color:var(--accent);font-style:italic;text-decoration:underline;text-decoration-color:var(--mark);text-decoration-thickness:10px;text-underline-offset:-3px}.mission{padding:20px 21px;color:white;background:var(--accent);border-radius:18px;box-shadow:var(--shadow)}.mission span,.mission small{display:block;color:rgba(255,255,255,.73);font-size:11px}.mission strong{display:block;margin:5px 0 10px;font:500 20px/1.25 Georgia,serif}.panel{background:var(--card);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}.story-grid{display:grid;grid-template-columns:1.55fr .7fr;gap:20px}.story{padding:clamp(26px,5vw,48px)}.section-title{display:flex;align-items:center;gap:10px}.section-no{width:31px;height:31px;display:grid;place-items:center;border-radius:50%;background:var(--mark);font-weight:800}.section-title h2{margin:0;font-size:19px}.story h3{margin:32px 0 15px;font:italic 500 33px/1.2 Georgia,serif}.story-text{font:500 clamp(17px,2vw,21px)/1.88 Georgia,serif}.story-text p{margin:0}.story-text mark{color:inherit;background:linear-gradient(transparent 58%,color-mix(in srgb,var(--mark) 70%,transparent) 58%);padding:0 2px}.story-note{margin:27px 0 0;padding-top:17px;border-top:1px dashed var(--line);color:var(--muted);font-size:13px}.vocab{padding:27px;color:white;background:var(--accent);border:0}.vocab .eyebrow{color:var(--mark)}.vocab h3{margin:0 0 18px;font:500 25px/1.2 Georgia,serif}.vocab-row{display:grid;grid-template-columns:1fr auto;gap:10px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.14)}.vocab-row b{font-family:Georgia,serif}.vocab-row span{color:rgba(255,255,255,.72);font-size:12px;text-align:right}.sentence-map{margin:22px 0;padding:23px;display:grid;grid-template-columns:auto repeat(4,1fr);gap:8px}.map-label{align-self:center;margin-right:7px;color:var(--muted);font-size:10px;font-weight:800;letter-spacing:.12em}.map-part{padding:13px 9px;border-radius:11px;text-align:center;font-family:Georgia,serif}.map-part small{display:block;color:#53605b}.noun{background:#b9dce5}.verb{background:#dce96a}.object,.complement{background:#f4c9aa}.helping{background:#d9caeb}.mody{background:#e8e3f1}.xray{margin-bottom:46px;padding:29px;box-shadow:none}.xray-head{display:flex;justify-content:space-between;align-items:end;gap:22px;margin-bottom:19px}.xray-head h2{margin:0;font:500 29px/1.2 Georgia,serif}.xray-head p{max-width:480px;margin:0;color:var(--muted);font-size:13px}.analysis-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}.analysis-card{padding:18px;border:1px solid var(--line);border-radius:15px;background:#f8f8f3}.analysis-card h3{margin:0 0 3px;font-size:14px}.analysis-card>small{display:block;margin-bottom:14px;color:var(--muted)}.chunks{display:flex;flex-wrap:wrap;gap:7px}.chunk{min-width:84px;flex:1;padding:9px;border:1px solid var(--line);border-radius:9px;background:white;text-align:center}.chunk b{display:block;min-height:28px;font:500 14px/1.3 Georgia,serif}.chunk select{width:100%;margin-top:5px;padding:5px;color:var(--ink);background:#f4f4ef;border:1px solid #c9cec7;border-radius:6px}.chunk.right{border-color:#4b8c75;background:#eef8f3}.chunk.wrong{border-color:#c98070;background:#fff3ef}.xray-action{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:15px}.xray-feedback{margin:0;color:var(--muted);font-size:13px}.secondary{padding:9px 15px;color:var(--accent);background:white;border:1px solid var(--accent);border-radius:9px;font-weight:800}.exercise-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:18px}.exercise-head h2{margin:0;font:500 32px/1.2 Georgia,serif}.exercise-head p{margin:0;color:var(--muted);font-size:13px}.questions{display:grid;gap:14px}.question{padding:24px 27px;box-shadow:none}.q-row{display:flex;gap:13px}.q-num{flex:0 0 auto;width:27px;height:27px;display:grid;place-items:center;border:1px solid;border-radius:50%;font:700 11px/1 sans-serif}.q-body{width:100%}.q-body>p{margin:0 0 3px;font-weight:700}.q-body>small{color:var(--muted)}input,textarea{width:100%;margin-top:16px;padding:12px 4px 9px;color:var(--ink);background:transparent;border:0;border-bottom:1.5px solid #aaa79e;outline:0}textarea{min-height:72px;padding:13px;border:1.5px solid #cbc6ba;border-radius:10px;resize:vertical}.tokens{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}.token{padding:7px 10px;color:var(--ink);background:white;border:1px solid #bab5a8;border-radius:8px;box-shadow:0 2px 0 #d6d1c5}.token:hover{background:color-mix(in srgb,var(--mark) 40%,white)}.token:disabled{opacity:.4;cursor:default;box-shadow:none;transform:translateY(2px)}.reset{margin-top:9px;padding:2px 0;color:var(--muted);background:transparent;border:0;border-bottom:1px solid;font-size:11px}.feedback{display:none;margin:12px 0 0;padding:9px 12px;border-radius:8px;font-size:12px}.question.correct{border-color:#4b8c75}.question.correct .feedback{display:block;color:#24634e;background:#e8f4ef}.question.incorrect{border-color:#c98070}.question.incorrect .feedback{display:block;color:#913625;background:#faebe7}.submit-row{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:20px;color:var(--muted);font-size:12px}.primary{padding:13px 21px;color:white;background:var(--accent);border:0;border-radius:11px;font-weight:800;box-shadow:0 5px 0 color-mix(in srgb,var(--accent) 65%,black)}.teacher{margin-top:28px;overflow:hidden;box-shadow:none}.teacher button{width:100%;padding:18px 24px;display:flex;justify-content:space-between;color:var(--ink);background:transparent;border:0;font-weight:800;text-align:left}.teacher-content{display:none;padding:0 24px 22px;color:var(--muted);font-size:13px}.teacher.open .teacher-content{display:block}.teacher-content ul{margin:0;padding-left:19px}.source{margin-top:60px;padding-top:20px;display:flex;justify-content:space-between;border-top:1px solid var(--line);color:var(--muted);font-size:11px}
.catalog-head{margin-bottom:40px}.catalog-head h1{margin:0;font:500 clamp(44px,7vw,76px)/1.03 Georgia,serif;letter-spacing:-.05em}.catalog-head p:last-child{max-width:650px;color:var(--muted)}.course-section{margin:38px 0}.course-section h2{font:500 30px/1.2 Georgia,serif}.set-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.set-card{padding:24px;text-decoration:none;transition:transform .2s,border-color .2s}.set-card:hover{transform:translateY(-3px);border-color:var(--accent)}.set-card .badge{display:inline-block;padding:4px 8px;color:var(--accent);background:var(--soft);border-radius:99px;font-size:10px;font-weight:800}.set-card h3{margin:15px 0 8px;font:500 24px/1.2 Georgia,serif}.set-card p{margin:0;color:var(--muted);font-size:13px}.set-card footer{margin-top:18px;display:flex;justify-content:space-between;color:var(--accent);font-size:11px;font-weight:800}.empty-card{opacity:.55;border-style:dashed;box-shadow:none}
.analysis-grid{grid-template-columns:1fr}.analysis-card{padding:20px}.chunk{min-width:130px;padding:10px}
@media(max-width:780px){.topbar{height:62px;padding:0 16px}.brand strong,.top-nav a:not(.active){display:none}.page{width:min(100% - 24px,1120px);padding-top:40px}.lesson-head,.story-grid{grid-template-columns:1fr}.mission{width:100%}.sentence-map{grid-template-columns:1fr}.map-label{text-align:center}.analysis-grid,.set-grid{grid-template-columns:1fr}.xray-head,.xray-action,.exercise-head,.submit-row,.source{align-items:flex-start;flex-direction:column}.primary{width:100%}.question{padding:21px 17px}}
@media print{.topbar,.tokens,.reset,.submit-row,.teacher{display:none!important}body{background:white}.page{width:100%;padding:0}.panel{box-shadow:none}}
.writing-standard{margin-top:16px;padding:12px 14px;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;border-radius:10px;background:color-mix(in srgb,var(--mark) 26%,white);border-left:4px solid var(--accent)}
.writing-standard b{font-size:13px;color:var(--accent)}
.writing-standard span{color:var(--muted);font-size:12px;text-align:right}
.content-criteria{margin:10px 0 0;padding:13px 15px;border:1px solid var(--line);border-radius:10px;background:#fff}.content-criteria>b{color:var(--accent);font-size:12px}.content-criteria ol{margin:6px 0 0;padding-left:20px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 24px;color:var(--muted);font-size:12px}.content-criteria li::marker{color:var(--accent);font-weight:800}
.writing-standard+textarea{margin-top:10px;line-height:1.8}
.writing-meter{margin-top:7px;display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:11px}
.writing-meter span{color:var(--accent);font-weight:800}
.open-question .feedback{font-size:13px}
.feedback-title{display:block;margin-bottom:7px}
.feedback-list{margin:0;padding-left:19px}
.feedback-list li{margin:4px 0}
.feedback-list .good::marker{color:#2f8065}
.feedback-list .needs::marker{color:#b44e39}
@media(max-width:640px){.writing-standard{display:block}.writing-standard span{display:block;margin-top:4px;text-align:left}.writing-meter{display:block}.content-criteria ol{grid-template-columns:1fr}}
