:root{--ink:#213e33;--green:#285a43;--muted:#758077;--bg:#f6f5ef;--line:#dfe2d7;--paper:#fffef9;--accent:#e0e9a4;--red:#a44230}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}button,input,textarea{font:inherit}button,a,input{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:var(--green)}header{max-width:1380px;margin:auto;padding:24px 52px;display:flex;align-items:center;gap:26px;border-bottom:1px solid var(--line)}.brand{font:bold 37px/1 Georgia,serif;letter-spacing:-2px;text-decoration:none}.brand-leaf{color:#739458}.brand-dot,h1>span{color:#93a75c}.tagline{font-size:12px;letter-spacing:.06em;color:var(--muted);border-left:1px solid var(--line);padding-left:24px}.account{margin-left:auto;display:flex;align-items:center;gap:18px;font-size:13px}main{max-width:1276px;margin:0 auto;padding:0 24px;min-height:75vh}h1,h2,h3,p{margin-top:0}h1,h2{font-family:Georgia,'Times New 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13px;margin-top:7px;outline:none}textarea{resize:vertical}input:focus,textarea:focus{border-color:var(--green);box-shadow:0 0 0 2px #285a4315}button:focus-visible,a:focus-visible{outline:3px solid #93a75c;outline-offset:4px}.primary,.secondary,.quiet{border:0;border-radius:7px;padding:13px 19px;font-weight:550;font-size:13px}.primary{background:var(--green);color:#fff;display:inline-flex;justify-content:space-between;gap:30px;align-items:center}.primary:hover{background:#1c4935}.primary:disabled{opacity:.55;cursor:wait}.login-card .primary{width:100%;margin:4px 0 8px}.secondary{border:1px solid #ccd3c4;background:transparent;color:var(--ink)}.quiet{background:none;color:var(--muted);padding:5px}.footnote{font-size:11px;line-height:1.7;color:var(--muted);font-weight:400;margin:15px 0 0}.sketch{position:relative;height:190px;max-width:420px;margin:28px 0;background-image:linear-gradient(#708a6810 1px,transparent 1px),linear-gradient(90deg,#708a6810 1px,transparent 1px);background-size:22px 22px;border-radius:50%;display:flex;align-items:center;justify-content:center;gap:25px;transform:rotate(-4deg)}.sketch>span{font:120px Georgia;color:#739458}.sketch>div{font:italic 32px Georgia}.sketch small{position:absolute;bottom:0;right:5px;color:var(--muted);font-size:10px;letter-spacing:.12em}.steps{display:flex;gap:23px;color:var(--muted);font-size:10px;border-top:1px solid var(--line);padding-top:20px;max-width:420px}.narrow{max-width:500px;margin:70px auto}.page-heading{padding:45px 0 30px;display:flex;justify-content:space-between;align-items:center}.page-heading h1{font-size:46px;margin-bottom:16px}.page-heading .eyebrow{margin-bottom:14px}.page-heading p{margin:0}.number-mark{font:90px Georgia;color:#a9b681;display:flex;align-items:center;padding-right:40px;transform:rotate(-8deg)}.number-mark span{font-size:75px;border-top:2px solid #a9b681}.tabs{display:flex;gap:30px;border-bottom:1px solid var(--line);margin-bottom:30px}.tabs button{background:none;border:0;border-bottom:2px solid transparent;padding:14px 0;color:var(--muted);font-size:13px}.tabs button.selected{color:var(--green);border-color:var(--green)}.count{font-size:10px;padding:3px 7px;margin-left:7px;background:#e5e9de;border-radius:20px}.practice-layout{display:grid;grid-template-columns:255px 1fr;gap:28px}.sheet-card{padding:26px;height:fit-content}.sheet-card h2{font-size:25px}.sheet-button{display:flex;justify-content:space-between;align-items:center;width:100%;border:0;border-radius:7px;background:transparent;padding:14px 12px;color:var(--muted);text-align:left}.sheet-button.active{background:#e9eddf;color:var(--green);font-weight:600}.sheet-button small{font-weight:400;font-size:10px}.task-top{display:flex;justify-content:space-between;align-items:center;margin:0 0 16px}.task-top .eyebrow{margin:0}.pill{border:1px solid var(--line);padding:4px 10px;border-radius:30px;font-size:10px;color:var(--muted)}.task-buttons{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap}.task-buttons button{border:1px solid var(--line);background:none;border-radius:7px;padding:8px 16px;font-size:12px;color:var(--muted)}.task-buttons button.active{background:var(--ink);color:#fff;border-color:var(--ink)}.task-title{display:flex;justify-content:space-between;gap:20px}.task-title h2{font-size:28px}.score{font-size:11px;color:var(--muted);white-space:nowrap;padding-top:7px}.prewrap{white-space:pre-wrap;overflow-wrap:anywhere}.divider{height:1px;background:var(--line);margin:26px 0}.task-card h3{margin-bottom:7px}.task-card form>.muted{font-size:12px;max-width:500px}.upload{display:flex;flex-direction:column;gap:6px;align-items:center;justify-content:center;min-height:155px;padding:22px;background:#f6f8f0;border:1px dashed #b8c3a5;border-radius:9px;position:relative;text-align:center;cursor:pointer;overflow:hidden}.upload>span:last-of-type{color:var(--muted);font-size:11px;font-weight:400;overflow-wrap:anywhere}.upload-icon{font-size:25px;line-height:1}.upload input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;margin:0}.upload:focus-within{outline:2px solid var(--green)}.checkbox{display:flex;gap:10px;font-size:11px;color:var(--muted);font-weight:400;align-items:start}.checkbox input{margin-top:4px;accent-color:var(--green)}.submit-row{display:flex;justify-content:space-between;gap:20px;align-items:center}.submit-row .footnote{margin:0}.page-images{display:flex;flex-direction:column;gap:12px}.page-images img{max-width:100%;height:auto;border:1px solid var(--line);border-radius:6px}.section-heading{display:flex;justify-content:space-between;align-items:center}.section-heading h2{margin:0}.attempt{margin:16px 0}.attempt-head{display:flex;justify-content:space-between;align-items:start;gap:20px;margin-bottom:15px}.attempt h3{margin:0}.status{padding:4px 10px;background:#edf0e5;border-radius:20px;white-space:nowrap;font-size:11px}.status.error{background:#faede7;color:var(--red)}.feedback{background:#f4f6ee;padding:18px;border-radius:8px;margin:15px 0}.feedback p:last-child{margin-bottom:0}.teacher-grade{border-left:3px solid #9dac63;padding:5px 20px;margin:20px 0}.attempt details{margin-top:20px}.attempt summary{font-size:12px;cursor:pointer;margin-bottom:15px}.review-form{margin-top:22px;border-top:1px solid var(--line);padding-top:20px}.review-form input{max-width:140px}.teacher-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:28px}.form-row{display:flex;gap:16px}.form-row>label{flex:1}.note{padding:30px;color:var(--muted);font-size:13px}.note h3{color:var(--ink)}.invite-result{overflow-wrap:anywhere;margin-top:20px;font-size:12px}.empty{text-align:center;padding:70px 25px}.empty-symbol{font:65px Georgia;color:#a1ae82;margin-bottom:20px}.empty h2{font-size:27px}footer{max-width:1276px;margin:55px auto 0;padding:23px 24px;display:flex;justify-content:space-between;border-top:1px solid var(--line);font-size:10px;color:var(--muted);letter-spacing:.04em}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;padding:16px 25px;border-radius:10px;box-shadow:0 10px 30px #213e3325;max-width:90vw;z-index:10;font-size:13px}#toast.error{background:var(--red)}[hidden]{display:none!important}@media(max-width:800px){header{padding:20px 24px;gap:12px}.tagline{display:none}.login-layout{gap:30px;padding:40px 0;grid-template-columns:1fr}.intro h1{font-size:45px}.sketch,.steps{display:none}.login-card{max-width:none}.page-heading h1{font-size:36px}.number-mark{display:none}.practice-layout,.teacher-grid{grid-template-columns:1fr}.sheet-card{padding:20px}.sheet-card .footnote{display:none}#sheets{display:flex;overflow:auto;gap:10px}.sheet-button{min-width:140px}.sheet-button small{margin-left:12px}.tabs{gap:18px;overflow:auto;white-space:nowrap}.card{padding:23px}.account{gap:8px;font-size:11px}.submit-row{flex-direction:column;align-items:stretch}.submit-row .primary{justify-content:center}.task-title{flex-direction:column;gap:0}.task-title h2{margin-bottom:5px}.score{margin-bottom:18px}.attempt-head{flex-direction:column;gap:8px}footer span:last-child{display:none}}@media(prefers-reduced-motion:no-preference){button{transition:background .15s ease}}

select{display:block;width:100%;border:1px solid #d5dcd0;border-radius:7px;padding:12px 13px;margin-top:7px;background:var(--paper);color:var(--ink);font:inherit}.feedback.correct{border-left:3px solid #739458}.feedback.incorrect{border-left:3px solid #b56f4d}.feedback.unreadable,.feedback.needs_review{border-left:3px solid #a69761}

.password-input{display:flex;align-items:center;gap:8px}.password-input input{min-width:0}.password-toggle{margin-top:7px;flex:none}

.folder-heading{margin:8px 0 28px}.folder-heading .eyebrow{margin-bottom:12px}.folder-heading h2{font-size:34px;margin-bottom:12px}.folder-heading p{font-size:14px}.folder-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.folder-card{position:relative;display:flex;flex-direction:column;align-items:flex-start;text-align:left;min-height:230px;padding:30px;background:var(--paper);border:1px solid var(--line);border-radius:14px;color:var(--ink)}.folder-card:hover{background:#eef2e3;border-color:#acb999}.folder-title{font:normal 30px/1.2 Georgia,serif;margin:28px 0 12px}.folder-meta{font-size:12px;color:var(--muted)}.folder-arrow{position:absolute;right:28px;top:26px;color:var(--muted);font-size:21px}.folder-icon{position:relative;width:46px;height:31px;border:1.5px solid #8c9d6d;border-radius:4px;background:#edf0df;margin-top:7px}.folder-icon:before{content:'';position:absolute;left:-1.5px;top:-8px;width:22px;height:8px;border:1.5px solid #8c9d6d;border-bottom:0;border-radius:4px 4px 0 0;background:#edf0df}.folder-breadcrumb{display:flex;align-items:center;gap:15px;margin:0 0 26px;font-size:13px;color:var(--muted)}.folder-breadcrumb strong{color:var(--ink);font-weight:550}.folder-breadcrumb .quiet{padding:5px 0}.folder-grid .folder-card:focus-visible{outline:3px solid #93a75c;outline-offset:4px}@media(max-width:800px){.folder-grid{grid-template-columns:1fr;gap:14px}.folder-card{min-height:150px;padding:25px}.folder-title{font-size:27px;margin:20px 0 7px}.folder-icon{position:absolute;right:28px;top:47px}.folder-arrow{right:32px;top:20px}.folder-heading h2{font-size:30px}}