:root{--paper:#f6f5ee;--surface:#fffefa;--ink:#172a22;--muted:#617065;--line:#dce1d5;--green:#184d3b;--light:#e6ede1;--lime:#dded9d;--orange:#df996c}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.75 Pretendard,-apple-system,sans-serif}button,a,input{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer;color:inherit}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #7e9f42;outline-offset:4px}a{color:inherit;text-decoration:none}.review-bar{background:#e7eadf;display:flex;justify-content:center;gap:18px;padding:8px 22px;font-size:12px;color:#465a47}.review-bar b{font-weight:600}header{max-width:1240px;margin:auto;display:flex;align-items:center;gap:34px;padding:24px 32px;border-bottom:1px solid var(--line)}.wordmark{font-size:24px;font-weight:800;letter-spacing:-1px}.wordmark span{font-weight:300}.home-link{font-weight:600;font-size:14px}.mode{margin-left:auto;display:flex;background:#e8ecdf;border-radius:999px;padding:4px;gap:3px}.mode button{background:transparent;border:0;border-radius:999px;padding:8px 16px;font-size:13px;min-height:40px}.mode button[aria-pressed=true]{background:var(--surface);box-shadow:0 2px 5px #18382712;font-weight:600}main{max-width:1176px;margin:auto;padding:42px 32px 80px}h1,h2,h3,p{margin:0}h1{font-size:clamp(32px,4.5vw,56px);line-height:1.25;letter-spacing:-2px;font-weight:700}h2{font-size:27px;line-height:1.4;letter-spacing:-1px}h3{font-size:20px;line-height:1.5}.eyebrow{font-size:11px;font-weight:600;letter-spacing:2px;color:var(--green);margin-bottom:16px}.muted{color:var(--muted)}.hero{display:grid;grid-template-columns:1fr .8fr;gap:70px;align-items:center;padding:24px 0 50px}.hero p{font-size:17px;line-height:1.9;color:var(--muted);margin:22px 0;max-width:36ch}.hero-side{background:#e8eddf;border:1px solid #d7dfca;border-radius:10px;padding:26px}.hero-side .small{font-size:12px;color:var(--muted)}.hero-side h2{font-size:25px;margin:10px 0}.hero-side svg{display:block;width:100%;max-height:220px}.primary,.secondary{border:0;border-radius:6px;padding:12px 22px;font-size:15px;font-weight:600;min-height:48px;display:inline-flex;justify-content:center;align-items:center;gap:15px}.primary{background:var(--green);color:white}.primary:disabled{opacity:.45;cursor:default}.secondary{background:transparent;border:1px solid #c7cfbf}.primary:hover:not(:disabled){background:#123b2d}.detail-text{font-size:12px;color:var(--muted);margin-top:14px}.learning-loop{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:46px}.learning-loop>div{padding:23px 18px 23px 0}.learning-loop b{font-size:16px;display:block}.learning-loop span{font-size:13px;color:var(--muted)}.section-heading{display:flex;justify-content:space-between;align-items:end;margin:0 0 22px;gap:22px}.section-heading p{font-size:14px;color:var(--muted);margin-top:8px}.module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.module{border:1px solid var(--line);border-radius:10px;background:var(--surface);padding:25px}.module .num{font-size:12px;color:var(--green);font-weight:600;letter-spacing:1px}.module h3{margin:9px 0}.module>p{font-size:14px;color:var(--muted);margin-bottom:16px}.module ol{font-size:14px;padding-left:22px;margin:0;color:#485c4a;line-height:2}.module .link{margin-top:18px;font-size:14px;color:var(--green);font-weight:600;display:block}.module .planned{margin-top:18px;font-size:12px;color:var(--muted)}.about-study{border-top:1px solid var(--line);margin-top:42px;padding-top:24px}.about-study summary{cursor:pointer;font-weight:600}.about-study p{color:var(--muted);font-size:14px;margin:14px 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1fr;gap:36px;align-items:start}.scene{position:sticky;top:20px;background:var(--green);color:#f7f7e8;border-radius:10px;overflow:hidden}.scene-heading{padding:20px 22px 0;font-size:13px;color:#dfebd3}.scene svg{display:block;width:100%;height:auto;padding:15px 20px}.scene .legend{display:flex;gap:18px;padding:0 22px 19px;font-size:11px;flex-wrap:wrap;color:#dae4d2}.legend span{display:inline-flex;align-items:center;gap:6px}.legend i{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--lime)}.legend i.opponent{background:var(--orange)}.legend i.ball{background:white}.scene-foot{background:#133f30;padding:16px 22px;font-size:13px;color:#d9e4ce}.scene-foot b{color:white}.lesson-content h2{font-size:24px}.lesson-content>p{margin:14px 0 22px;color:#4e6252;line-height:1.9}.choices{display:grid;gap:10px;margin:22px 0}.choice{display:flex;align-items:center;text-align:left;gap:13px;background:var(--surface);border:1px solid #cdd6c5;border-radius:6px;padding:15px 17px;min-height:58px;font-size:15px}.choice .key{font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:4px;padding:0 7px}.choice.selected{background:var(--light);border-color:var(--green)}.choice:disabled{cursor:default}.feedback{padding:20px;border-radius:6px;background:#e6eddd;border-left:3px solid var(--green);margin:22px 0}.feedback h3{font-size:17px;margin-bottom:8px}.feedback p{color:#3f5a45;font-size:15px;line-height:1.85}.feedback.alt{background:#f3eade;border-left-color:#c18d53}.lesson-actions{display:flex;gap:12px;justify-content:space-between;align-items:center;margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}.lesson-actions .small{font-size:12px;color:var(--muted)}.concept{padding:20px 0;border-top:1px solid var(--line)}.concept:first-child{border:0;padding-top:0}.concept .label{font-size:11px;color:var(--green);letter-spacing:1px}.concept h3{margin:6px 0 10px}.concept p{font-size:15px;color:#4e6252;line-height:1.9}.takeaway{background:#e8eddf;padding:20px;border-radius:6px;font-size:16px;margin-top:22px}.case-switch{display:flex;gap:8px;margin:15px 0}.case-switch button{border:1px solid var(--line);border-radius:999px;background:transparent;padding:6px 12px;font-size:12px;min-height:40px}.case-switch button.on{background:var(--green);color:white}.case-note{font-size:13px;color:var(--muted);margin-bottom:12px}.task{padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:8px;margin:18px 0}.task h3{font-size:18px}.task p,.task li{font-size:15px;line-height:1.9;color:#4e6252}.task ol{padding-left:22px}.task .observe{padding-top:14px;margin-top:14px;border-top:1px solid var(--line);font-size:14px}.plan{display:flex;gap:10px;align-items:start;font-size:15px;margin:20px 0;background:#e8eddf;padding:18px;border-radius:6px}.plan input{width:20px;height:20px;flex:none;margin-top:3px}.ending{padding:32px;background:#e6eddd;border-radius:10px}.ending h2{margin:10px 0 18px}.ending p{font-size:15px;color:#4e6252;line-height:1.9}.ending .primary{margin-top:24px}footer{border-top:1px solid var(--line);max-width:1176px;margin:auto;padding:25px 32px 35px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:12px;color:var(--muted)}footer b{font-size:10px;letter-spacing:2px}.skip{position:absolute;top:-100px}.skip:focus{position:fixed;top:0;left:0;background:white;padding:10px;z-index:100}@media(max-width:800px){.hero{gap:26px;grid-template-columns:1fr 1fr}.lesson-layout{grid-template-columns:minmax(0,1fr);gap:24px}.scene{position:static;max-width:560px;width:100%;margin:auto}.scene svg{max-height:340px}.module-grid{grid-template-columns:minmax(0,1fr)}.learning-loop{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-steps button{padding:12px 14px}.hero p{font-size:15px}}@media(max-width:767px) and (orientation:portrait){header{padding:18px;gap:18px;flex-wrap:wrap}.wordmark{font-size:22px}.home-link{margin-left:auto}.mode{order:2;width:100%;margin:0}.mode button{flex:1}.review-bar{display:block;padding:9px 18px}.review-bar span{display:block;font-size:11px}main{padding:22px 18px 50px}.hero{grid-template-columns:minmax(0,1fr);padding-top:10px;gap:24px}.hero-side{padding:20px}.hero-side svg{max-height:170px}.hero h1{letter-spacing:-1.5px}.hero p{max-width:none}.learning-loop>div{padding:15px 8px 15px 0}.learning-loop b{font-size:14px}.learning-loop span{font-size:12px}.section-heading{display:block}.section-heading p{margin-top:10px}.module{padding:20px}.lesson-heading{display:block}.lesson-heading .pill{display:inline-block;margin-top:14px}.lesson-steps{justify-content:space-between}.lesson-steps button{font-size:12px;padding:12px 3px;flex:1}.lesson-steps .step-index{display:block;margin-right:0;font-size:10px}.scene-heading{padding:16px 18px 0}.scene svg{padding:10px}.scene .legend{padding:0 18px 15px;gap:13px}.lesson-content h2{font-size:22px}.choice{padding:14px 13px}.lesson-actions .primary{padding:12px 14px;font-size:14px}.lesson-actions .small{max-width:15ch}.task{padding:18px}.ending{padding:24px}footer{padding:22px 18px}}
/* 운영 학습실: 공통 홈페이지 머리·발과 분리된 학습 탐색 */
.learning-bar{max-width:1176px;margin:auto;padding:18px 32px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line)}.learning-bar>a{display:flex;flex-direction:column;font-size:16px;line-height:1.5}.learning-bar>a span{font-size:12px;color:var(--muted)}.learning-bar .mode{margin-left:auto}.module ol{padding:0;list-style:none}.lesson-link{display:block;border-top:1px solid var(--line);padding:13px 0;line-height:1.5;min-height:48px}.lesson-link small{display:block;font-size:11px;color:var(--muted);margin-top:4px}.lesson-link:hover{color:var(--green);text-decoration:underline}.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin:25px 0}.toolbar input{min-width:0;flex:1;min-height:48px;background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:10px 15px}.progress-summary{display:flex;gap:20px;flex-wrap:wrap;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:20px;margin:20px 0}.progress-summary strong{display:block;font-size:24px;color:var(--green)}.progress-summary span{font-size:12px;color:var(--muted)}.record-note{font-size:13px;color:var(--muted);margin:12px 0}.study-note{display:block;resize:vertical;width:100%;min-height:120px;padding:12px;border:1px solid #b7c4b0;border-radius:6px;background:white;font:inherit;line-height:1.8}.record-tools{margin-top:30px;border-top:1px solid var(--line);padding-top:20px}.record-tools summary{cursor:pointer;font-weight:600;min-height:44px}.record-tools p{font-size:14px;margin:14px 0}.record-tools .secondary{margin:8px 8px 8px 0}.review-card{padding:22px;border:1px solid var(--line);border-radius:8px;background:var(--surface);margin:18px 0}.review-card p{margin:12px 0}.review-card summary{cursor:pointer;font-weight:600;min-height:44px}.scene-text{padding:0 22px 22px;font-size:14px;line-height:1.9;color:#edf3e3}.scene .scene-heading{font-weight:600}.scene svg text{font-family:Pretendard,sans-serif}.scene-foot{line-height:1.8}.references{font-size:13px;color:var(--muted);margin-top:25px}.references a{text-decoration:underline}.references li{margin:10px 0}.task ol li{margin:12px 0}.case-note{padding:16px;border:1px solid var(--line);border-radius:6px;background:var(--surface);font-size:15px;line-height:1.9}.empty-search{padding:30px;border:1px solid var(--line);border-radius:8px}.meta-line{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.meta-line span{font-size:12px;background:#e6eddd;padding:5px 9px;border-radius:6px}.next-course{margin-top:28px}.choice span:last-child{min-width:0}.save-error{max-width:1112px;margin:10px auto;padding:14px 20px;background:#f3eade;color:#6d4826;border:1px solid #d6bc94}button:disabled{cursor:default}.file-input{max-width:100%}.ending .secondary{margin-top:15px}.ending .task{background:#fffefa}.no-display{display:none!important}
@media(max-width:767px) and (orientation:portrait){.learning-bar{padding:16px 18px}.learning-bar>a{font-size:14px}.learning-bar>a span{font-size:11px}.learning-bar .mode{width:auto;order:0}.mode button{padding:8px 14px}.toolbar input{flex-basis:100%}.progress-summary{gap:16px;padding:16px}.progress-summary strong{font-size:20px}.lesson-actions{flex-wrap:wrap}.lesson-actions>*{flex:1;min-width:120px}.lesson-heading h1{overflow-wrap:anywhere}.scene-text{padding:0 18px 18px}.lesson-steps button{min-height:58px}.scene svg{max-height:none}.meta-line{gap:5px}.module h3{font-size:20px}}

.scene>summary{cursor:pointer;padding:20px 22px;min-height:56px}.scene[open]>summary{padding-bottom:0}.scene:not([open]){background:var(--green)}.scene:not([open])>summary::after{content:" · 펼쳐 보기";font-size:11px;font-weight:400}.scene>summary:focus-visible{outline-offset:-4px}
.hero-side svg{background:var(--green);border-radius:8px;margin:16px 0;padding:8px}