:root{--green:#24594c;--green-dark:#153e35;--mint:#e8f2ed;--bg:#f6f7f5;--ink:#202f2b;--muted:#79847f;--line:#e4e9e5;--amber:#a96a17;--radius:14px;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);font-size:14px}*{box-sizing:border-box}body{margin:0}a{color:var(--green);text-decoration:none}a:hover{color:#123d30}button,input,select,textarea{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.6;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid 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38px}.class-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.class-card{display:flex;align-items:center;gap:13px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:11px;color:var(--ink)}.class-card:hover{border-color:#9db6a5}.class-icon{font-size:12px;background:#f2f3eb;border:1px solid #e8ebdf;color:#7f8c65;width:36px;height:40px;border-radius:7px;display:grid;place-items:center;flex-shrink:0}.class-card strong{font-size:12px;font-weight:550;line-height:1.6}.class-card small{display:block;color:#98a29b;font-size:10px;margin-top:4px}.arrow{margin-left:auto;color:#95a59a}.assignment-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.assignment-card{border:1px solid var(--line);background:#fff;border-radius:var(--radius);padding:23px;color:var(--ink);display:block;transition:transform .15s,border-color 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.brand-mark{color:var(--green);background:#dcebdc}.story-text{margin:auto 0;padding:70px 0}.story-text .eyebrow{color:#9bbca7}.story-text h1{font-size:46px;line-height:1.5;letter-spacing:1px;font-weight:500;margin:25px 0}.story-text>p{font-size:14px;color:#aec4b5;line-height:2}.story-cards{margin-top:42px;max-width:340px}.mock-card{background:#ffffff0e;border:1px solid #ffffff21;display:flex;align-items:center;gap:15px;padding:22px 19px;border-radius:12px;transform:rotate(-3deg)}.mock-card strong{font-size:13px;font-weight:500}.mock-card small{display:block;font-size:10px;color:#aac4af;margin-top:8px}.mock-icon{border:1px solid #8db69a;width:30px;height:34px;border-radius:6px;display:grid;place-items:center;color:#d5e9c7}.secondary{margin:15px 0 0 32px;transform:rotate(3deg);background:#2a5b4d}.story-footer{font-size:8px;color:#82a48f;letter-spacing:2px}.login-form-wrap{padding:70px 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10px}.sr-only{position:absolute;width:1px;height:1px;clip-path:inset(50%);overflow:hidden}.skip{position:absolute;left:10px;top:-100px;z-index:100;background:white;padding:10px}.skip:focus{top:10px}
@media(min-width:1500px){.content{padding-top:50px}.assignment-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:1200px){.sidebar{width:205px}.workspace{margin-left:205px}.content{padding:30px 26px}.topbar{padding:0 26px}.assignment-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.stat{padding:20px}.class-card{padding:14px}.login-story{padding:40px}.story-text h1{font-size:39px}}@media(max-width:800px){.sidebar{width:100%;height:auto;position:relative;padding:16px 20px;border-right:0;border-bottom:1px solid var(--line);display:block}.sidebar .brand{font-size:20px}.sidebar .brand-mark{width:34px;height:36px;font-size:19px;border-radius:8px}.sidebar .brand small{font-size:7px}.sidebar .side-label{display:none}.sidebar nav{display:flex;gap:6px;margin-top:18px}.nav-link{padding:9px 12px;margin:0;font-size:12px;gap:6px}.nav-link span{font-size:16px}.side-bottom{position:absolute;right:20px;top:13px;border:0;margin:0;padding:0}.side-bottom .avatar{display:none}.side-bottom small{max-width:105px;overflow:hidden;text-overflow:ellipsis}.workspace{margin:0}.topbar{height:47px;padding:0 20px;font-size:10px}.term{font-size:9px}.content{padding:25px 20px}.page-heading{align-items:flex-start;gap:12px;margin-bottom:25px}h1{font-size:24px}.page-heading .button{font-size:11px;padding:10px 12px}.stats{gap:10px;margin-bottom:25px}.stat{padding:17px 14px}.stat strong{font-size:28px;margin-top:12px}.stat>span{font-size:10px}.stat>div{font-size:9px}.class-grid{grid-template-columns:1fr}.assignment-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.assignment-card{padding:18px}.panel-heading{padding:18px;align-items:flex-start;flex-wrap:wrap}.panel-heading .actions{flex-wrap:wrap}.filters{padding:15px 18px;flex-wrap:wrap}.filters select{max-width:100%;flex:1}.filters input{max-width:none;flex:1;min-width:150px!important}.form-panel,.brief{padding:22px}.upload-panel form{padding:18px}.upload-panel .form-actions{align-items:flex-end}.file-list li{padding:20px 18px}.compact .stat{padding:17px 15px}.login-layout{grid-template-columns:1fr}.login-story{padding:28px;min-height:160px}.story-text{padding:25px 0 0;margin:0}.story-text h1{font-size:25px;margin:0}.story-text h1 br{display:none}.story-text>p,.story-cards,.story-footer,.story-text .eyebrow{display:none}.login-story .brand{font-size:21px}.login-form-wrap{padding:38px 25px;min-height:65vh}.login-form h2{font-size:24px}.login-footer{margin-top:30px}}@media(max-width:480px){.assignment-grid{grid-template-columns:1fr}.topbar .term{display:none}.class-card strong{font-size:11px}.page-heading .eyebrow{font-size:9px}.stats{gap:7px}.stat{padding:16px 11px}.stat strong{font-size:26px}.stat strong small{margin-left:4px;font-size:10px}.panel-heading h2{font-size:15px}.actions .button{font-size:10px;padding:8px 11px}.form-actions>.small{max-width:45%;line-height:1.8}.filters select{width:100%;flex:auto}.filters input{flex:1}.error-page{margin:30px 20px;padding:30px}}
