:root{--bg:#f6f4ee;--paper:#fffdf7;--ink:#253630;--sub:#79847d;--sage:#617366;--warm:#b68a65;--line:#e4e6de;--ui:#f4f6f4;--frame:#fdfdfa;--shadow:0 24px 70px rgba(39,54,43,.09)}*{box-sizing:border-box}html{font-size:16px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,"Pretendard","Noto Sans KR","Malgun Gothic",system-ui,sans-serif;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #92b2a5;outline-offset:3px}button:disabled{cursor:not-allowed;opacity:.5}.hidden{display:none!important}.shell{min-height:100vh;max-width:1690px;margin:auto;padding:0 38px}.topbar{height:91px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #dfdfd6;gap:12px}.identity{display:flex;align-items:center;gap:14px}.identity-icon{height:37px;width:33px;border:2px solid 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20px}.toast{position:absolute;z-index:12;top:78px;left:28px;right:28px;background:#41594a;color:white;text-align:center;padding:12px;font-size:11px;border-radius:12px;box-shadow:0 8px 30px #0002}.preview-caption{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:440px;color:#9ba69b;font-size:10px;margin-top:18px}.preview-caption b{color:#6e7b70}.inspector{padding-left:8px}.inspector h2{font-size:20px;margin:25px 0 9px}.side-description{font-size:12px;line-height:1.8;color:#8b978b;margin-bottom:22px}.scenario-list{display:flex;flex-direction:column;gap:10px}.scenario{width:100%;display:flex;align-items:center;text-align:left;gap:13px;padding:14px 12px;background:#fffefa;border:1px solid #e5e9e2;border-radius:13px;color:#556258}.scenario.selected,.scenario:hover{border-color:#93ac9c;background:#f7faf5}.scenario-icon{height:36px;width:36px;border-radius:11px;background:#edf2ec;display:grid;place-items:center;font-size:19px;color:#779079;flex-shrink:0}.scenario strong{font-size:12px;display:block}.scenario small{font-size:11px;display:block;color:#9aa69c;margin-top:5px}.review-questions p{display:flex;gap:11px;font-size:12px;line-height:1.7;color:#78847b;margin:15px 0}.review-questions span{font-family:Georgia,serif;font-weight:750;color:#baaa94}.reset-demo{border:1px solid #d6dcd4;border-radius:10px;padding:12px;background:transparent;color:#718373;font-size:12px;width:100%;margin-top:18px}.version-box{margin-top:40px;padding:20px;background:#eeeee6;border:1px solid #e4e5da;border-radius:14px}.version-box span{display:block;font-size:9px;letter-spacing:2px;color:#a2a595}.version-box strong{display:block;font-family:Georgia,serif;font-size:16px;margin:10px 0;color:#516455}.version-box small{color:#93a095;font-size:10px;line-height:1.6}.site-footer{height:57px;border-top:1px solid #e3e4dd;display:flex;align-items:center;justify-content:space-between;font-size:10px;color:#abb1a5;gap:10px}@media(max-width:1200px){.workspace{grid-template-columns:minmax(230px,.8fr) minmax(385px,1.25fr);gap:25px}.inspector{grid-column:1 / -1;display:grid;grid-template-columns:1fr 1fr;gap:5px 25px}.inspector>.divider{display:none}.inspector>.eyebrow,.inspector>h2,.inspector>.side-description{grid-column:1 / -1}.inspector .section-title,.review-questions{grid-column:2}.inspector .scenario-list{grid-row:4 / 7;grid-column:1}.inspector .reset-demo,.inspector .version-box{grid-column:2;align-self:start;margin:0}}@media(max-width:800px){.shell{padding:0 20px}.topbar{height:79px}.head-status{gap:8px}.status-badge{display:none}.workspace{display:flex;flex-direction:column;align-items:stretch;padding-top:30px}.overview{order:2}.preview-area{order:1}.inspector{order:3;display:block}.preview-caption{max-width:390px}.preview-top{max-width:390px}.overview h1{font-size:33px}.site-footer{flex-direction:column;justify-content:center;align-items:flex-start;gap:5px}.phone{margin:0 auto}}@media(max-width:430px){.shell{padding:0 9px}.topbar{padding:0 8px}.phone{width:calc(100vw - 32px);max-width:390px;height:calc((100vw - 32px) * 2.164);max-height:844px}.preview-top,.preview-caption{padding:0 5px}.phone:before{transform:translateX(-50%) scale(.8);transform-origin:top center}.binder-card{height:118px}.binder-mini{width:66px;height:89px}.notebook{height:calc((100vw - 32px) * .98);max-height:385px}.ring:nth-of-type(6){top:90%}.ring:nth-of-type(5){top:73%}.ring:nth-of-type(4){top:56%}.ring:nth-of-type(3){top:39%}.ring:nth-of-type(2){top:22%}.ring:nth-of-type(1){top:9%}.paper{padding:19px 13px 12px}.paper h3{margin:13px 0 8px}.paper-rule{margin-bottom:10px}}
/* Correct ring offsets: .spine-seam is the first span child */
.binder-spine>.ring:nth-child(2){top:39px}.binder-spine>.ring:nth-child(3){top:101px}.binder-spine>.ring:nth-child(4){top:163px}.binder-spine>.ring:nth-child(5){top:225px}.binder-spine>.ring:nth-child(6){top:287px}.binder-spine>.ring:nth-child(7){top:349px}
@media(max-width:430px){.binder-spine>.ring:nth-child(2){top:9%}.binder-spine>.ring:nth-child(3){top:24%}.binder-spine>.ring:nth-child(4){top:39%}.binder-spine>.ring:nth-child(5){top:56%}.binder-spine>.ring:nth-child(6){top:73%}.binder-spine>.ring:nth-child(7){top:90%}}