:root{--paper:#f5f4ef;--white:#fff;--ink:#292333;--muted:#77717e;--line:#e6e3df;--purple:#8c72ad;--light-purple:#eee8f4;--lime:#d6ed77;--pink:#f0bad1;--red:#a43c4a}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:'Manrope','Noto Sans KR',sans-serif;font-size:13px;-webkit-font-smoothing:antialiased}button,input,textarea,select{font:inherit}button,a,input,textarea{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.55}button,input,textarea{outline-offset:4px}button:focus-visible,a:focus-visible{outline:3px solid var(--purple);outline-offset:4px}a{color:inherit;text-decoration:none}button{color:inherit}h1,h2,h3,p{margin-top:0}button,a{ -webkit-tap-highlight-color:transparent}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.eyebrow{font-size:9px;letter-spacing:1.5px;font-weight:700;margin-bottom:18px}.brand{display:flex;align-items:center;gap:10px;font-size:23px;font-weight:800;letter-spacing:-1px;line-height:1.1}.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:var(--ink);color:var(--lime);font-weight:800;font-size:26px;letter-spacing:-4px;padding-right:3px;padding-bottom:4px;flex-shrink:0}.brand-light{font-size:17px;font-weight:500;color:var(--muted);letter-spacing:-.5px;margin-left:3px}.brand small{display:block;font-size:8px;letter-spacing:2.7px;margin-top:6px;font-weight:600}.login-screen{min-height:100dvh;display:grid;grid-template-columns:1.1fr 1fr}.login-intro{padding:45px 8%;background:#e9e3f0;position:relative;display:flex;flex-direction:column;overflow:hidden}.login-copy{max-width:480px;margin:auto 0;padding-top:65px}.login-copy h1{font-size:clamp(38px,4.2vw,65px);font-weight:800;line-height:1.4;letter-spacing:-3px;margin-bottom:24px}.login-copy h1 span{color:#866ba4}.login-copy>p:not(.eyebrow){color:#706377;font-size:13px;line-height:2}.learning-graphic{height:160px;position:relative;margin-top:36px;max-width:400px;overflow:hidden}.learning-graphic>span{position:absolute;font-size:12px;letter-spacing:4px;bottom:10px;left:6px}.learning-graphic>i{font-size:70px;font-style:normal;position:absolute;right:35px;top:0;color:#81639d;transform:rotate(12deg)}.graphic-stairs{position:absolute;right:0;bottom:-15px;width:220px;height:130px;display:flex;align-items:flex-end;transform:rotate(-8deg)}.graphic-stairs b{width:25%;height:28%;background:var(--lime);border:1px solid #71803e;box-shadow:inset -10px 0 #c2d966}.graphic-stairs b:nth-child(2){height:50%}.graphic-stairs b:nth-child(3){height:73%}.graphic-stairs b:nth-child(4){height:95%}.home-link{margin-top:30px;font-size:11px;color:#766780;padding:20px 0 0}.login-panel{display:flex;align-items:center;justify-content:center;padding:65px 9%;position:relative}.login-box{max-width:370px;width:100%}.small-mark{font-size:37px;display:block;margin-bottom:29px;color:#9278ad}.login-box h2{font-size:32px;letter-spacing:-1.5px;margin-bottom:17px}.login-box>p:not(.eyebrow){font-size:12px;line-height:2;color:var(--muted)}#google-button{margin-top:30px;min-height:44px}.login-status{font-size:11px!important;min-height:24px}.login-status.error{color:var(--red)!important}.login-note{margin-top:28px;padding:22px 0;border-top:1px solid var(--line)}.login-note strong{font-size:11px}.login-note p{font-size:11px;line-height:1.9;color:var(--muted);margin:9px 0 0}.login-footer{position:absolute;bottom:30px;font-size:8px;letter-spacing:1.8px;color:#9e96a5}.initial-loading{min-height:100vh;display:flex;gap:18px;align-items:center;justify-content:center;color:var(--muted)}.initial-loading p{margin:0}.app{min-height:100dvh;display:grid;grid-template-columns:220px 1fr}.sidebar{position:sticky;top:0;height:100dvh;background:#ebe7ee;border-right:1px solid #ded8e4;display:flex;flex-direction:column;padding:33px 22px}.sidebar .brand{font-size:20px;margin:0 8px 35px}.workspace-tag{font-size:9px;color:#897792;letter-spacing:.5px;margin:0 12px 15px}.sidebar nav{display:flex;flex-direction:column;gap:6px}.nav-button{display:flex;align-items:center;gap:12px;border:0;background:transparent;text-align:left;padding:13px 14px;border-radius:6px;font-size:12px;color:#6d6077}.nav-button>span:first-child{font-size:19px;line-height:1}.nav-button.active{background:var(--ink);color:white}.nav-button:hover:not(.active){background:#e0d9e6}.nav-arrow{font-size:15px!important;margin-left:auto}.sidebar-bottom{margin-top:auto}.sidebar-note{border:1px solid #d7cee0;border-radius:6px;background:#e3dcec;padding:20px 18px;margin:25px 0}.sidebar-note>span{display:block;font-size:33px;line-height:1;color:#9575b2;margin-bottom:17px}.sidebar-note strong{font-size:19px;line-height:1.55;letter-spacing:-.7px}.sidebar-note p{font-size:10px;color:#8c7d96;line-height:1.9;margin:12px 0 0}.sidebar-bottom>a{display:flex;justify-content:space-between;font-size:10px;color:#8a7d93;padding:4px 9px}.app-main{min-width:0}.app-topbar{height:77px;display:flex;align-items:center;justify-content:space-between;padding:0 4.5%;border-bottom:1px solid var(--line);gap:15px}.topbar-label{font-size:10px;color:#8a8290}.topbar-label>span{padding:0 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0;font-size:10px;color:#725785;display:flex;gap:20px;align-items:center}.assignment-card-footer button:hover{text-decoration:underline;text-underline-offset:4px}.empty-state{grid-column:1/-1;border:1px dashed #dcd4e3;border-radius:7px;text-align:center;padding:48px 20px;background:#f9f7fb}.empty-state>span{font-size:32px;color:#a68cb9;display:block;margin-bottom:18px}.empty-state h3{font-size:16px;margin-bottom:12px;letter-spacing:-.4px}.empty-state p{font-size:11px;color:#978b9f;line-height:1.8;margin:0}.app-footer{margin-top:40px;border-top:1px solid var(--line);padding:20px 0;display:flex;justify-content:space-between;color:#a89dae;font-size:8px}.student-table{grid-column:1/-1;width:100%;border-collapse:collapse;font-size:11px;background:#fffdfa;border-radius:5px}.student-table th{text-align:left;color:#a296aa;font-size:9px;font-weight:500;border-bottom:1px solid var(--line);padding:15px}.student-table td{padding:16px 15px;border-bottom:1px solid #efebe8}.student-table 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h2{font-size:23px;line-height:1.5;letter-spacing:-.8px;margin:0;overflow-wrap:anywhere}.icon-button{border:0;background:#f0ebf4;color:#8f7b9f;width:29px;height:29px;border-radius:50%;font-size:22px;line-height:1;flex-shrink:0}#modal-body{padding:25px 29px 30px}.assignment-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:10px;color:#9d91a5;margin-bottom:20px}.instructions{background:#f6f2f9;border-radius:5px;padding:19px;font-size:12px;line-height:2;white-space:pre-wrap;overflow-wrap:anywhere;margin-bottom:24px;color:#7b698b}.instructions-label{font-size:9px;letter-spacing:1px;color:#a38daf;margin-bottom:10px}.form-field{display:flex;flex-direction:column;gap:9px;margin-bottom:19px;font-size:11px;color:#796987}.form-field input,.form-field textarea{border:1px solid #e1d8e8;border-radius:5px;padding:12px;background:white;font-size:12px;line-height:1.8;color:var(--ink);width:100%}.form-field textarea{min-height:140px;resize:vertical}.form-field input:focus,.form-field textarea:focus{outline:2px solid #c9b6d9;outline-offset:1px}.form-field small{font-size:9px;color:#a89ab2;line-height:1.7}.form-actions{display:flex;justify-content:flex-end;gap:9px;flex-wrap:wrap;padding-top:9px}.form-error{font-size:11px;color:var(--red);line-height:1.8;min-height:20px}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.student-picker{border:1px solid var(--line);max-height:170px;overflow:auto;border-radius:5px;padding:4px 12px;margin-bottom:20px}.student-picker label{display:flex;gap:10px;align-items:center;padding:10px 0;border-bottom:1px solid #f0ebf4;font-size:11px}.student-picker small{color:#aa9bb4;font-size:9px}.student-picker input{accent-color:#86649d}.picker-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.picker-heading label{font-size:10px;color:#a28eaf}.picker-heading button{border:0;background:none;color:#9072a5;font-size:10px}.feedback-box{border:1px solid #d9dfb7;background:#f5f8e9;border-radius:5px;padding:19px;margin:20px 0}.feedback-box>strong{font-size:10px;color:#8b9b56}.feedback-box p{font-size:12px;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere;margin:10px 0 0}.readonly-answer{font-size:12px;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere;padding:15px;background:#f6f3f8;border-radius:5px;margin-bottom:15px}.submission-link{display:block;color:#8b69a1;font-size:11px;text-decoration:underline;overflow-wrap:anywhere;line-height:1.8;margin:10px 0 20px}.review-card{padding:20px;border:1px solid var(--line);border-radius:6px;margin-top:15px}.review-card-header{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:15px}.review-card-header strong{font-size:12px}.review-card-header small{display:block;font-size:9px;color:#aa9bb4;margin-top:4px;overflow-wrap:anywhere}.review-card .form-field textarea{min-height:90px}.review-card .form-actions{padding-top:0}.review-card .readonly-answer{font-size:11px}.review-card>.no-answer{font-size:10px;color:#a99ab2;margin:0}.helper-note{font-size:10px;color:#a494ae;line-height:1.9}.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;padding:13px 22px;font-size:11px;border-radius:6px;box-shadow:0 5px 30px #29233325;max-width:calc(100vw - 30px);z-index:20}.danger-text{color:var(--red)}
@media(min-width:1500px){#content{padding-top:55px}.sidebar{padding-top:38px}.summary-card{padding:25px;min-height:145px}.assignment-card-body{padding-top:23px;padding-bottom:29px}}
@media(max-width:1050px){.app{grid-template-columns:185px 1fr}.sidebar{padding:29px 15px}.sidebar .brand{font-size:18px;margin-left:5px}.sidebar .brand-mark{width:30px;height:30px;font-size:23px;border-radius:8px}.summary-grid{gap:10px}.summary-card{padding:18px 16px}.progress-card{gap:8px}.progress-ring{width:53px;height:53px}.progress-ring:before{width:41px;height:41px}.progress-ring>span{font-size:10px}.progress-info>strong{font-size:16px}.page-heading h1{font-size:27px}.assignment-card-head,.assignment-card-body{padding-left:18px;padding-right:18px}.assignment-card-footer{padding-left:18px;padding-right:18px}.assignment-card h3{font-size:16px}}
@media(max-width:760px){.login-screen{grid-template-columns:1fr}.login-intro{padding:25px 7% 20px}.login-intro .brand{font-size:20px}.login-intro .brand-mark{width:30px;height:30px;font-size:23px}.login-copy{padding-top:35px;max-width:100%}.login-copy .eyebrow{font-size:8px;margin-bottom:15px}.login-copy h1{font-size:35px;line-height:1.35;letter-spacing:-1.8px}.login-copy h1 br:nth-child(2){display:none}.login-copy h1 span:before{content:' '}.login-copy>p:not(.eyebrow){font-size:11px;line-height:1.9}.learning-graphic{display:none}.home-link{padding-top:0;font-size:10px;margin-top:12px}.login-panel{padding:38px 7% 70px;justify-content:flex-start}.login-box{max-width:100%}.small-mark{display:none}.login-box .eyebrow{font-size:8px;margin-bottom:12px}.login-box h2{font-size:26px}.login-box>p:not(.eyebrow){font-size:11px}.login-note{margin-top:22px;padding-top:19px}.login-footer{left:7%;font-size:7px}.app{display:block}.sidebar{position:static;height:auto;border-right:0;border-bottom:1px solid #ddd5e5;padding:18px 6% 0}.sidebar .brand{margin:0 0 16px;font-size:19px}.sidebar .brand small{display:inline;font-size:9px;letter-spacing:1px;margin:0 0 0 8px}.sidebar .brand-mark{width:30px;height:30px}.workspace-tag,.sidebar-bottom{display:none}.sidebar nav{flex-direction:row;gap:8px}.nav-button{padding:11px 13px;font-size:11px;border-radius:6px 6px 0 0;gap:8px}.nav-button>span:first-child{font-size:16px}.nav-arrow{display:none}.app-topbar{height:53px;padding:0 6%}.topbar-label{font-size:8px}.topbar-label>span{padding:0 6px}.user-menu{gap:6px;font-size:9px}.user-avatar{height:22px;width:22px;font-size:9px}.plain-button{font-size:8px;padding:4px}#content{padding:29px 6% 0}.page-heading{gap:10px;align-items:flex-start;margin-bottom:23px}.page-heading h1{font-size:24px;margin-bottom:10px;letter-spacing:-1px}.page-heading .eyebrow{font-size:7px;margin-bottom:10px;letter-spacing:.5px}.page-heading p:not(.eyebrow){font-size:10px;max-width:230px}.page-heading>.primary-button{font-size:9px;padding:10px 11px;white-space:nowrap;margin-top:27px}.summary-grid{grid-template-columns:1fr 1fr;gap:10px;margin-bottom:33px}.summary-card{padding:17px;min-height:113px}.summary-card>span{font-size:9px}.summary-value{font-size:29px;margin-top:12px}.summary-value small{font-size:10px}.summary-card>p:last-child{font-size:8px}.summary-icon{top:16px;right:16px;font-size:16px}.progress-card{grid-column:1/-1;min-height:98px;gap:15px}.progress-info>strong{font-size:18px;margin-top:7px}.progress-info>p{margin-top:7px}.progress-ring{height:59px;width:59px;margin-right:7px}.progress-ring:before{height:45px;width:45px}.progress-ring>span{font-size:12px}.assignment-grid{grid-template-columns:1fr;gap:15px}.list-heading{align-items:flex-end;gap:10px;margin-bottom:17px}.list-heading .eyebrow{font-size:7px}.list-heading h2{font-size:19px}.search{width:145px;padding:8px 9px;gap:6px}.search input{font-size:9px}.filters{gap:2px;padding-bottom:15px}.filter{font-size:9px;padding:6px 10px}.assignment-card-head{padding:19px 20px 0}.assignment-card-body{padding:16px 20px 20px}.assignment-card h3{font-size:18px;margin-bottom:11px}.assignment-card-body>p{font-size:11px;min-height:40px}.assignment-card-footer{padding:12px 20px}.app-footer{font-size:7px;padding-top:17px;margin-top:29px}.student-table th{padding:12px 9px}.student-table td{padding:14px 9px;font-size:10px}.student-email{font-size:8px}.table-button{font-size:8px;padding:5px 7px}.modal-heading{padding:23px 21px 20px}.modal-heading h2{font-size:20px}.modal-heading .eyebrow{font-size:7px}#modal-body{padding:22px 21px 25px}.field-row{grid-template-columns:1fr;gap:0}.review-card{padding:17px 15px}.instructions{font-size:11px;padding:15px}.form-actions>.primary-button,.form-actions>.secondary-button{font-size:10px;padding:10px 13px}.initial-loading{font-size:11px}}
.form-field select{width:100%;border:1px solid #e1d8e8;border-radius:5px;padding:12px;background:white;color:var(--ink);font-size:12px}.form-field select:disabled{opacity:1;background:#f6f2f9}.math-type-badge{display:inline-block;border-radius:4px;padding:4px 8px;background:#edf3d8;color:#6b7a34;font-size:9px;margin-bottom:12px}.math-editor-heading,.problem-editor-top,.math-section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.math-editor-heading{margin:10px 0 16px}.math-editor-heading strong{font-size:13px}.math-editor-heading p{font-size:10px;line-height:1.8;color:var(--muted);margin:6px 0 0}#math-problem-count{font-size:10px;white-space:nowrap;color:#8c799b}.math-help{padding:13px 15px;background:#f4f0f8;border:1px solid #e6ddec;border-radius:6px;margin-bottom:17px;font-size:10px;line-height:1.9}.math-help summary{cursor:pointer;font-weight:600;color:#795b92}.math-help p{margin:12px 0 0}.math-help code{font-size:11px;color:#725186;overflow-wrap:anywhere}.math-editor-problem{padding:18px;border:1px solid #ddd5e5;background:#fcfafc;border-radius:7px;margin-bottom:16px}.problem-editor-top{margin-bottom:12px}.problem-title{font-size:12px}.equation-toolbar{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}.equation-toolbar button{border:1px solid #ded5e7;background:#fff;border-radius:4px;color:#7b628d;padding:6px 9px;font-size:10px}.equation-toolbar button:hover{background:#eee7f4}.math-prompt{width:100%;min-height:110px;resize:vertical;border:1px solid #dcd2e5;border-radius:5px;background:white;padding:12px;font-size:12px;line-height:1.9;color:var(--ink)}.math-prompt:focus{outline:2px solid #c9b6d9;outline-offset:1px}.math-prompt:read-only{background:#f7f4f9}.math-preview,.answer-preview:not(:empty){margin-top:12px;padding:13px 15px;border:1px solid #e5e7d9;background:#f9fbf2;border-radius:5px}.math-preview>span,.answer-preview>span{display:block;font-size:9px;color:#929b73;margin-bottom:10px}.math-text{font-size:13px;line-height:2;white-space:pre-wrap;overflow-wrap:anywhere;min-width:0}.math-text .katex{font-size:1.15em}.math-text .katex-display{overflow-x:auto;overflow-y:hidden;padding:8px 1px;max-width:100%;white-space:normal}.math-text .katex-display>.katex{white-space:nowrap}.math-preview .helper-note{margin:0}.math-problems{margin:0 0 24px}.math-section-heading{font-size:10px;color:#7b8652;padding-bottom:12px;border-bottom:1px solid #e4e8d7}.math-section-heading strong{font-size:11px}.math-problem{display:grid;grid-template-columns:28px minmax(0,1fr);gap:12px;padding:20px 0;border-bottom:1px solid #ece8ef}.problem-number{display:grid;place-items:center;align-self:start;border-radius:5px;background:#eaf1d3;color:#748343;height:26px;width:26px;font-size:11px;font-weight:700}.math-answer-item{padding:19px;border:1px solid #e1d9e8;border-radius:7px;margin:18px 0 22px;background:#fcfafc}.math-answer-item>strong{font-size:11px;color:#87944e}.math-answer-item>.math-text{margin:12px 0 18px}.math-answer-item .form-field{margin-bottom:0}.math-answer-item textarea{min-height:95px}.math-answer-review{margin:16px 0}.math-answer-review>section{padding:13px 15px;background:#f4f7eb;border:1px solid #e1e7cf;border-radius:5px;margin-bottom:10px}.math-answer-review strong{font-size:10px;color:#85934e}.math-answer-review .math-text{margin-top:8px;font-size:12px}#math-editor>.helper-note{margin-top:12px;margin-bottom:22px}@media(max-width:760px){.math-editor-problem,.math-answer-item{padding:14px}.math-text{font-size:12px}.equation-toolbar button{font-size:9px;padding:6px 8px}.math-preview{padding:12px}.math-problem{gap:9px;grid-template-columns:25px minmax(0,1fr)}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}