:root{--ink:#213b38;--muted:#74817c;--green:#126b5e;--deep:#153f38;--line:#dce4dd;--bg:#f4f5ef;--orange:#b86b2b;--white:#fff;--shadow:0 12px 40px #183c3710;font-family:Inter,"Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:4px}button{cursor:pointer}button{border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);padding:10px 16px;font-size:13px;line-height:1.5;transition:.18s}button:hover{border-color:var(--green);background:#f0f6f1}button:disabled{opacity:.48;cursor:not-allowed}.primary{background:var(--green);color:white;border-color:var(--green)}.primary:hover{background:#0d554b;color:white}.quiet{background:transparent;border-color:transparent}.danger{color:#b64b3a}.small{padding:6px 10px;font-size:12px}input,select,textarea{border:1px solid 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h1{font-size:36px}}@media(max-width:850px){.editor-layout{grid-template-columns:1fr}.editor-form{display:grid;grid-template-columns:1fr 1fr;gap:15px}.editor-form .panel+.panel{margin-top:0}.drawing-canvas{min-height:260px}.login-page{grid-template-columns:1fr}.login-art{padding:30px}.login-art h1{font-size:29px}.login-art p,.hero-sketch,.login-footer{display:none}.login-form-wrap{padding:30px}.login-art .eyebrow{display:none}.login-art h1{margin-top:20px}.stats{gap:20px}}@media(max-width:620px){.layout{display:block}.sidebar{position:relative;height:auto;padding:18px;border-right:0;border-bottom:1px solid var(--line);gap:15px}.sidebar .brand{padding:0}.sidebar nav{display:flex;gap:5px;overflow:auto}.sidebar nav .nav-label{display:none}.nav-item{white-space:nowrap;min-width:fit-content;width:auto}.sidebar-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:12px}.sidebar-actions{margin:0}.topbar{height:48px;padding:0 20px}.content{padding:23px 18px}.page-heading{align-items:flex-start}.page-heading h1{font-size:26px}.page-heading p{font-size:12px}.welcome{padding:20px;display:block}.stats{margin-top:22px}.toolbar{align-items:flex-start;flex-wrap:wrap}.search{max-width:100%}.editor-form{display:block}.editor-form .panel+.panel{margin-top:16px}.editor-heading{display:block}.editor-actions{margin-top:15px}.cards{grid-template-columns:1fr}.drawing-canvas{overflow-x:auto}.drawing-canvas img{min-width:480px}.online{font-size:10px}.welcome-number{display:none}h1{font-size:27px}}

.password-control{position:relative}.password-control input{padding-right:78px}.password-control .password-toggle{position:absolute;right:7px;top:50%;transform:translateY(-50%);min-width:52px;min-height:32px;padding:5px 9px;border:0;border-radius:5px;background:#edf3ed;color:#126b5e;font-size:12px;line-height:1.4;white-space:nowrap;visibility:visible;opacity:1;z-index:1}.password-control .password-toggle:hover,.password-control .password-toggle[aria-pressed="true"]{background:#dfebdf}.password-control .password-toggle:focus-visible{outline:2px solid #126b5e;outline-offset:1px}.password-control input::-ms-reveal,.password-control input::-ms-clear{display:none}

.ai-entry{margin-top:18px;border-top:1px solid var(--line);padding-top:18px}.ai-entry .primary{width:100%}.ai-values{max-height:36vh;overflow:auto;margin:16px 0}.ai-values table{width:100%;border-collapse:collapse}.ai-values td,.ai-values th{padding:8px 12px;text-align:left;border-bottom:1px solid var(--line)}

.roster-preview{max-height:42vh;overflow:auto;margin:16px 0}.roster-preview table{width:100%;border-collapse:collapse;font-size:13px}.roster-preview td,.roster-preview th{padding:9px 10px;text-align:left;border-bottom:1px solid var(--line);overflow-wrap:anywhere}.roster-error{color:#a43828}.roster-preview th{position:sticky;top:0;background:#edf3ed}

.group-intro{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin:8px 0 20px}.group-intro h2{font-size:19px;margin-bottom:9px}.group-intro p{font-size:12px;color:var(--muted);line-height:1.8}.group-board{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;align-items:start}.group-column{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}.group-column>header{display:flex;justify-content:space-between;align-items:center;background:#edf3ed;padding:16px}.group-column h3{font-size:14px}.group-column>header>span{font-size:12px;color:var(--muted)}.group-column.unassigned>header{background:#f4eddd}.group-dropzone{padding:12px;min-height:160px;max-height:430px;overflow-y:auto;transition:background .15s}.group-dropzone.drop-active{background:#dfeee6;box-shadow:inset 0 0 0 2px #126b5e}.group-student{display:flex;gap:10px;align-items:center;border:1px solid #e1e7df;border-radius:8px;padding:9px 10px;background:#fbfcf9;margin-bottom:8px;min-height:45px;cursor:grab}.group-student-name{flex:1;overflow-wrap:anywhere;font-size:13px}.group-student button{font-size:11px;padding:4px 7px;cursor:pointer}.group-grip{color:#839482;font-size:19px}.group-student.dragging{opacity:.4}.group-empty{font-size:12px;color:#98a294;text-align:center;padding:40px 6px}.group-saving{pointer-events:none;opacity:.65}@media(max-width:620px){.group-board{grid-template-columns:1fr}.group-intro{display:block}.group-intro>.tag{display:inline-block;margin-top:10px}.toolbar .tabs{flex-wrap:wrap}}

/* Space for the shared platform navigation. */
.layout{min-height:calc(100vh - 82px)}.sidebar{top:82px;height:calc(100vh - 82px)}.ui-header a{text-decoration:none}.sidebar-actions a{font-size:12px;color:#126b5e}.ui-header .ui-user form{margin:0}.ui-header .ui-brand-text{line-height:1.35}.ui-header .ui-nav{min-width:0}.ui-header .ui-nav-link{white-space:nowrap}.ui-header button{font:inherit}@media(max-width:1100px){.ui-header-inner{gap:12px}.ui-header .ui-brand-text small{display:none}.ui-header .ui-nav-link{padding:10px 12px;font-size:14px}}@media(max-width:760px){.sidebar{height:auto;top:0}.layout{min-height:calc(100vh - 120px)}.ui-header{position:relative}}
.page-heading a.primary{display:inline-flex;align-items:center;padding:10px 16px;border-radius:8px;text-decoration:none;font-size:13px}.content a:not(.primary){color:var(--green);text-decoration:none}