:root{font-family:Inter,PingFang SC,Microsoft YaHei,sans-serif;color:#172033;background:#f3f1eb;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input,textarea{font:inherit}a{color:inherit;text-decoration:none}.shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;padding:32px 24px;background:#14213d;color:#f7f3e8}.brand{display:flex;align-items:center;gap:12px;font-family:Georgia,serif;font-size:25px}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#f6bd60;color:#14213d;font-weight:700}.eyebrow{margin:0 0 10px;color:#b27735;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase}.sidebar .eyebrow{margin-top:12px;color:#aeb8cc}nav{display:grid;gap:7px;margin-top:40px}nav a{padding:12px 14px;border-radius:10px;color:#bbc5d8}nav a:hover,nav a.active{background:#f7f3e8;color:#14213d}.account{display:grid;gap:5px;margin-top:auto;padding-top:22px;border-top:1px solid #34425e}.account span{color:#aeb8cc;font-size:12px}.account button{width:fit-content;padding:7px 0;border:0;background:transparent;color:#f6bd60;cursor:pointer}.main{padding:44px clamp(24px,5vw,72px);overflow:hidden}.page-head{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:30px}h1,h2,h3{margin:0;font-family:Georgia,Songti SC,serif}h1{font-size:clamp(32px,4vw,54px);font-weight:500}h2{font-size:25px}h3{font-size:20px}.muted,.list-card p,.step-card p{color:#697286;line-height:1.7}.status-pill,.tag{display:inline-flex;width:fit-content;padding:6px 10px;border-radius:999px;background:#e7dfcf;color:#7b5426;font-size:12px}.hero-panel{display:grid;grid-template-columns:1fr 1fr;gap:30px;padding:38px;border-radius:18px;background:#dce6df}.hero-panel p{max-width:520px;color:#52615b;line-height:1.8}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px}.step-card,.panel{border:1px solid #ded9ce;border-radius:16px;background:#fffdfa;box-shadow:0 12px 30px #14213d0d}.step-card{padding:26px;transition:transform .2s ease}.step-card:hover{transform:translateY(-4px)}.step-card>span{display:block;margin-bottom:34px;color:#b27735;font-family:Georgia,serif;font-size:26px}.two-column{display:grid;grid-template-columns:minmax(300px,.8fr) minmax(380px,1.2fr);gap:22px}.panel{padding:28px}.panel h2{margin-bottom:22px}.narrow-panel{max-width:850px}.full{width:100%}.inline-fields,.actions,.search-strip{display:flex;align-items:center;gap:14px}.actions{margin-top:18px}.section-title{display:flex;align-items:center;justify-content:space-between}.list-card{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 0;border-top:1px solid #ebe6dd}.list-card h3{margin-top:10px}.list-card small,.task-button small{color:#858c9b}.task-button{display:grid;width:100%;gap:10px;margin:10px 0;padding:18px;border:1px solid #e4dfd5;border-radius:12px;background:#fff;color:#172033;text-align:left;cursor:pointer}.task-button:hover,.task-button.selected{border-color:#b27735;background:#fbf6eb}.search-strip{margin-bottom:20px;padding:16px;border-radius:12px;background:#fffdfa}.login-page{min-height:100vh;display:grid;grid-template-columns:1.2fr .8fr;background:#14213d}.login-story{display:flex;flex-direction:column;justify-content:center;padding:clamp(50px,8vw,130px);color:#f8f1e1;background:radial-gradient(circle at 20% 20%,#2a5570 0,transparent 42%),#14213d}.login-story h1{max-width:760px;font-size:clamp(45px,6vw,82px);line-height:1.02}.login-story>p:not(.eyebrow){max-width:620px;margin-top:30px;color:#bfc9d9;font-size:17px;line-height:1.9}.loop-line{display:flex;flex-wrap:wrap;gap:12px;margin-top:50px}.loop-line span{padding:8px 13px;border:1px solid #58677f;border-radius:999px}.login-card{align-self:center;margin:50px;padding:clamp(30px,5vw,60px);border-radius:20px;background:#fffdfa}.login-card h2{font-size:38px}.login-card .muted{margin-bottom:30px}.security-note{margin-top:20px;color:#858c9b;font-size:12px;line-height:1.6}.context-select{width:100%;margin-top:18px}.form-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.setup-panel,.syllabus-grid,.analytics-grid{margin-bottom:22px}.edit-card,.answer-card,.review-question{display:grid;gap:12px;padding:18px 0;border-top:1px solid #ebe6dd}.sub-title{margin-top:32px}.mapping-panel,.assignment-editor,.history-panel,.wrong-panel,.result-panel{margin-top:22px}.question-form{margin-top:28px;padding-top:24px;border-top:1px solid #ebe6dd}.compact{grid-template-columns:1fr 1fr}.upload-row{display:flex;align-items:center;gap:14px;color:#697286;font-size:13px}.upload-row .el-progress{width:160px}.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:22px}.metric{display:grid;gap:6px;padding:24px;border-radius:16px;background:#fffdfa;border:1px solid #ded9ce}.metric strong{color:#14213d;font-family:Georgia,serif;font-size:36px}.metric span{color:#697286}.progress-row{display:grid;grid-template-columns:140px 1fr;align-items:center;gap:12px;margin:16px 0}.review-layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:22px}.review-queue{align-self:start}.evidence-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.evidence-grid>div{padding:14px;border-radius:10px;background:#f7f4ed}.evidence-grid small{color:#858c9b}.evidence-grid p{color:#4f596d;line-height:1.6}.score-edit{display:grid;grid-template-columns:140px 1fr auto}.change-mark{color:#b27735;font-size:12px}.progress-summary{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}.progress-summary span{padding:8px 12px;border-radius:8px;background:#f1eee6;color:#52615b;font-size:13px}@media(max-width:900px){.shell{grid-template-columns:1fr}.sidebar{position:static;height:auto;padding:18px}.sidebar .eyebrow,.account span{display:none}nav{display:flex;overflow-x:auto;margin-top:18px}.account{position:absolute;top:16px;right:18px;border:0;padding:0}.account strong{display:none}.main{padding:28px 18px}.hero-panel,.card-grid,.two-column,.login-page,.review-layout,.evidence-grid,.metric-grid,.form-grid{grid-template-columns:1fr}.login-story{padding:50px 28px}.login-card{margin:0;border-radius:0}.score-edit,.progress-row{grid-template-columns:1fr}}