*{box-sizing:border-box}body{margin:0;background:#f5f7f9;color:#233a36;font-family:Microsoft YaHei,system-ui,sans-serif;font-size:14px}button,input,select,textarea{font:inherit}button,.button{border:0;background:#166954;color:#fff;border-radius:7px;padding:11px 18px;cursor:pointer;text-decoration:none;display:inline-block}button:disabled{opacity:.5;cursor:wait}button:hover{filter:brightness(1.08)}input,select,textarea{width:100%;border:1px solid #d9e2df;border-radius:6px;padding:11px;background:#fff;color:#233a36}textarea{min-height:100px;resize:vertical}label{display:block;margin:15px 0;color:#526b63}label input,label select,label textarea{display:block;margin-top:8px}h1{font-size:27px;margin:10px 0}h2{font-size:21px}h3{font-size:16px}p{line-height:1.85;color:#60746e}small{color:#7c8c87}a{color:#166954}.app{display:flex;min-height:100vh}aside{width:244px;background:#fff;border-right:1px solid #e4eae7;padding:30px 22px;position:fixed;height:100vh;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:13px;color:#166954;font-weight:800;font-size:30px}.brand>span{font-size:21px}.brand small{display:block;font-size:11px;letter-spacing:2px;font-weight:400;margin-top:6px}.term{font-size:12px;line-height:2.2;margin:30px 0;color:#7c8c87}.term b{color:#344d45}nav button{width:100%;text-align:left;background:transparent;color:#5d716a;margin:5px 0;padding:13px}nav button span{margin-right:13px}nav .active{background:#eaf3ef;color:#13684e;font-weight:700}.identity{margin-top:auto;border-top:1px solid #eee;padding-top:20px}.identity small{display:block;margin:8px 0}.identity button{background:none;color:#6b7e76;padding:0;font-size:12px}main{margin-left:244px;padding:30px 42px;width:calc(100% - 244px);max-width:1600px}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px}.badge,.pill{background:#edf4ef;color:#297158;border-radius:20px;font-size:12px;padding:7px 12px}.hero{background:#153f35;color:#fff;border-radius:13px;padding:36px 40px;display:flex;justify-content:space-between;align-items:center}.hero h2{font-size:30px;line-height:1.6;font-weight:500}.hero span,.hero p{color:#b5d1c3}.hero button{background:#e3edbd;color:#254d37}.hero-mark{font-family:Georgia;font-style:italic;font-size:130px;color:#d5e5bc;padding:0 30px}.hero-mark small{display:block;font-family:system-ui;font-size:13px;letter-spacing:4px;font-style:normal}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:22px 0 32px}.metrics article,.chapter,.panel{background:#fff;border:1px solid #e3e9e5;border-radius:10px;padding:24px}.metrics strong{display:block;font-size:28px;font-weight:500;margin-bottom:10px}.section-title{display:flex;justify-content:space-between;align-items:center}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.chapter{cursor:pointer;min-height:207px;transition:transform .15s}.chapter:hover{transform:translateY(-3px);border-color:#6d9e88}.chapter>div:first-child{display:flex;justify-content:space-between;align-items:center}.chapter-no{font-size:10px;letter-spacing:1.5px;color:#6f8d7c}.chapter h3{margin:24px 0 10px}.chapter p{font-size:12px}.line{height:4px;background:#eef2ef;margin:18px 0}.line i{display:block;height:4px;background:#6b9d67}.panel{margin-bottom:20px}.selector{max-width:650px;margin-bottom:20px}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 20px}.upload{padding:18px;background:#f5f9f6;border:1px dashed #a8bcb1;border-radius:8px}.material{border-top:1px solid #e6ece7;padding:18px 0}.material button{margin-left:15px}.secondary{background:#edf3ef;color:#2c6553;margin:10px 8px 10px 0}.empty{padding:30px;text-align:center;color:#81928a}.pre{white-space:pre-wrap;overflow-wrap:anywhere}.editor{min-height:330px}.ai-answer{background:#edf5f0;padding:24px;line-height:2;margin-top:24px;border-left:3px solid #408166}.projection{background:#183e34;color:#fff;padding:30px;border-radius:10px;margin:20px 0}.projection p{color:#c1d5c9}.weights{display:flex;gap:10px;flex-wrap:wrap}.weights span{padding:14px;background:#f0f5f1}.weights b{margin-left:18px}.record{border-top:1px solid #e8eee9;padding:15px 0}.record span{margin-left:20px;color:#8b9a91}.error{padding:16px;background:#fbe9e5;color:#922f23;margin-bottom:15px}.notice{padding:16px;background:#e6f3e9;margin-bottom:15px}details{padding:12px;border-bottom:1px solid #eee}summary{cursor:pointer}footer{text-align:center;color:#9aaba1;font-size:11px;margin:35px 0 5px}.login{min-height:100vh;background:#e9f0e9;padding:70px 10%}.login h1{font-size:44px;line-height:1.6}.login form{background:#fff;padding:30px;width:380px;border-radius:12px;position:absolute;right:12%;top:20%;box-shadow:0 15px 60px #204e3510}.login form button{width:100%;margin:10px 0 20px}.login small{display:block}@media(min-width:1600px){main{margin-right:auto}}@media(max-width:1100px){.cards{grid-template-columns:repeat(2,1fr)}aside{width:200px}main{margin-left:200px;width:calc(100% - 200px);padding:24px}.hero-mark{display:none}.login form{position:static;margin-top:30px;width:100%;max-width:430px}.login h1{font-size:32px}}@media(max-width:650px){.app{display:block}aside{position:static;width:100%;height:auto;padding:16px}.brand small,.term,.identity small{display:none}nav{display:flex;overflow-x:auto;margin-top:15px}nav button{white-space:nowrap;width:auto;font-size:12px;padding:10px}nav button span{display:none}.identity{position:absolute;top:18px;right:15px;border:0;padding:0;font-size:11px}.identity button{margin-left:8px}main{margin:0;width:100%;padding:18px}.hero{padding:24px}.hero h2{font-size:23px}.metrics{grid-template-columns:repeat(2,1fr);gap:10px}.metrics article{padding:17px}.cards{grid-template-columns:1fr}.section-title{display:block;margin-bottom:15px}.form-grid{grid-template-columns:1fr}.panel{padding:18px}header h1{font-size:24px}.badge{font-size:10px}.login{padding:35px 20px}.login h1{font-size:30px}}.workspace-intro{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;gap:16px}.workspace-intro h2{margin:8px 0;font-size:24px}.workspace-intro p{margin:0}.eyebrow{font-size:11px;letter-spacing:2px;color:#638677;font-weight:700}.live-card{background:#e9f2ec;border:1px solid #cadfd0;border-left:5px solid #17694f;border-radius:10px;padding:23px 26px;margin-bottom:20px}.live-card h2{font-size:24px;margin:16px 0 8px}.live-card p{margin:7px 0}.live-top{display:flex;align-items:center;justify-content:space-between;gap:16px}.live-top>b{font-size:13px}.action-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:16px}.action-row label{margin:0;flex:1;max-width:550px}.quick-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:20px 0}.quick-actions button,.student-tools button{background:#fff;color:#214f3c;border:1px solid #dae5de;text-align:left;padding:19px}.quick-actions small,.student-tools small{display:block;margin-top:10px;line-height:1.7}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(270px,1fr);gap:20px;align-items:start}.dashboard-grid .section-title{align-items:flex-start;gap:12px}.dashboard-grid .section-title small{max-width:170px;line-height:1.8}.table-scroll{overflow-x:auto}table{border-collapse:collapse;width:100%;text-align:left;font-size:13px}th{font-size:12px;color:#74897d;background:#f6f8f6}td,th{padding:12px 9px;border-bottom:1px solid #e8eee9}td small{display:block;line-height:1.7;margin-top:6px}td .secondary{white-space:nowrap;margin:0;padding:9px 12px}.inbox-count{display:flex;align-items:baseline;gap:12px}.inbox-count b{font-size:30px;color:#28614a}.inbox-count span{color:#708578}.inbox-item{display:block;width:100%;background:none;color:#3b5e4c;text-align:left;border-bottom:1px solid #e8eee9;border-radius:0;padding:14px 0;line-height:1.8;overflow-wrap:anywhere}.coming-soon{font-size:12px;color:#7c887e;border:1px dashed #cdd8ce;padding:12px;margin-top:18px;border-radius:6px;line-height:1.8}.status-strip{display:flex;flex-wrap:wrap;gap:12px 22px;background:#f2f6f2;padding:14px;border-radius:7px;font-size:13px}.status-strip b{color:#37654d}.student-tools{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:20px}.live-task{background:#ffffff80;padding:14px;border-radius:6px;white-space:pre-wrap}.resource-list a{display:block;padding:12px 0;border-bottom:1px solid #ecf0ec;overflow-wrap:anywhere}.link-list button{display:block;text-align:left;width:100%;background:none;color:#28654c;padding:16px 0;border-radius:0;border-bottom:1px solid #e8eee9}.student-mode .live-card{background:#f2f5ed}.student-mode .preparation-card{border-top:4px solid #7c9b68}.student-mode main{max-width:1330px}.student-mode header .badge{background:#e8eddd}.student-mode .dashboard-grid{grid-template-columns:1fr 1fr}main .panel>h2:first-child{margin-top:0}nav button:focus-visible,button:focus-visible,a:focus-visible{outline:3px solid #a2b76f;outline-offset:3px}@media(max-width:1150px){.dashboard-grid{grid-template-columns:1fr}.quick-actions{grid-template-columns:repeat(2,1fr)}}@media(max-width:650px){.workspace-intro{display:block}.workspace-intro h2{font-size:21px}.workspace-intro>.secondary{margin-top:12px}.live-card{padding:18px}.live-card h2{font-size:20px;line-height:1.6}.student-mode .dashboard-grid{grid-template-columns:1fr}.quick-actions{gap:9px}.quick-actions button{padding:14px}.student-tools{gap:10px}.student-tools button{padding:15px}.action-row button{width:100%;margin:0}.action-row label{min-width:100%}.status-strip{display:grid;gap:9px}.live-top{align-items:flex-start}.dashboard-grid{gap:0}.student-mode nav button.active{border-bottom:3px solid #34684a}.student-mode .workspace-intro p{font-size:12px}.student-mode header{margin-bottom:18px}.student-mode aside{border-bottom:1px solid #dbe5dc}.student-mode .term{display:none}}.sync-state{font-size:12px;color:#33724e}.live-tabs{display:flex;gap:24px;padding:16px;background:#eaf2ec;margin-bottom:18px;border-radius:8px;position:sticky;top:0;z-index:2}.choice{display:flex;align-items:center;gap:12px;background:#f3f6f3;border-radius:7px;padding:12px;overflow-wrap:anywhere}.choice input{width:18px;height:18px;margin:0;flex-shrink:0}.choice b{margin-left:auto;white-space:nowrap}.reply-entry{padding:12px 18px;margin:14px 0;background:#f1f6f1;border-left:3px solid #8ba57c}.reply-entry p{margin-bottom:0}.live-workspace{min-width:0}.live-workspace select{max-width:100%}.live-workspace fieldset{border:1px solid #dce5dc;border-radius:8px;margin-bottom:16px}.archive-json{white-space:pre-wrap;overflow-wrap:anywhere;max-height:500px;overflow:auto;font-size:12px}.projector{position:fixed;top:0;right:0;bottom:0;left:0;background:#153f35;color:#fff;z-index:30;padding:7vw;overflow:auto}.projector button{float:right}.projector small{display:block;color:#bed1bf}.projector h1{font-size:clamp(24px,4vw,58px);line-height:1.8;white-space:pre-wrap;overflow-wrap:anywhere;margin-top:50px}.projector p{font-size:24px;color:#dbe9da;white-space:pre-wrap;overflow-wrap:anywhere}.mobile-class-actions{display:none}.quiz-card h3{white-space:pre-wrap;overflow-wrap:anywhere}html{scroll-padding-top:70px}.live-workspace .action-row select{flex:1;min-width:130px}main,section,article{min-width:0}@media(max-width:650px){.mobile-class-actions{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:20;background:#fff;border-top:1px solid #ccdacf;padding:8px 8px calc(8px + env(safe-area-inset-bottom));gap:5px;box-shadow:0 -3px 15px #204b3510}.mobile-class-actions button{flex:1;padding:12px 4px;font-size:13px}.student-mode main{padding-bottom:100px}.live-workspace .section-title{display:block}.live-workspace .section-title .pill{display:inline-block}.live-workspace .action-row select{width:100%}.choice{font-size:14px}.live-workspace .panel{overflow-wrap:anywhere}.live-workspace textarea{font-size:16px}.live-tabs{top:0}.projector{padding:24px}.projector p{font-size:18px}}aside nav{overflow-y:auto;min-height:0}.material{overflow-wrap:anywhere}@media(max-width:650px){aside nav{overflow-x:auto;overflow-y:visible}.panel form button{margin:5px;max-width:100%}}:root{--ink:#183d38;--muted:#627c74;--accent:#18745d;--line:#dfe8e2;--paper:#fffdf9;--mint:#edf5ef}body{background:#f4f5f0;color:var(--ink);font-family:Inter,Microsoft YaHei,system-ui,sans-serif}button,.button{border-radius:10px;transition:background .18s,box-shadow .18s,transform .18s}button:not(:disabled):active{transform:translateY(1px)}input,select,textarea{border-radius:10px;border-color:var(--line);line-height:1.5}input:focus,select:focus,textarea:focus{outline:2px solid #73a58f;outline-offset:2px}p{color:var(--muted)}aside{background:var(--paper);border-color:var(--line);padding:28px 18px}.brand{letter-spacing:-.5px}.term{background:#f1f4ec;border-radius:12px;padding:12px;margin:22px 0 14px;font-size:11px}nav button{margin:3px 0;border-radius:10px;padding:12px 14px;font-size:13px}nav button span{display:inline-flex;width:20px;justify-content:center;opacity:.8}nav .active{background:#185646;color:#fff;box-shadow:0 4px 12px #184b3320}nav button:not(.active):hover{background:#edf3ec}.identity{margin-top:auto;padding:16px 8px 0}main{padding:30px 38px}header{border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:26px}header small{font-size:11px;letter-spacing:.5px}header h1{letter-spacing:-.8px;font-size:28px}.badge{border:1px solid #d2dfce;background:#e9f1df}.panel{border-radius:18px;border-color:var(--line);box-shadow:0 3px 16px #183e2904;padding:28px}.panel h2{font-size:21px;letter-spacing:-.3px}.workspace-intro h2{font-size:29px;letter-spacing:-.8px}.eyebrow{font-size:11px;letter-spacing:1px;color:#61836d}.course-ribbon{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;margin:23px 0}.course-ribbon>span{background:#fffdf9;padding:17px 20px;display:flex;gap:14px;align-items:center;font-size:12px;color:#688171}.course-ribbon b{font-size:25px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums}.live-card,.student-mode .live-card{background:linear-gradient(120deg,#164f43,#2d6c55);border:0;border-radius:18px;color:#fff;padding:28px 32px;position:relative;overflow:hidden}.live-card:after{content:"";position:absolute;right:-40px;top:-100px;width:270px;height:270px;border:44px solid #ffffff07;border-radius:50%;pointer-events:none}.live-card h2{font-size:28px;letter-spacing:-.5px;position:relative}.live-card p,.live-card label{color:#dae6db}.live-card .pill{background:#ffffff18;color:#ecf4dd;border:1px solid #ffffff25}.live-card button{background:#ddebba;color:#214e3b;font-weight:600}.live-task{background:#ffffff0c;border:1px solid #ffffff1a;border-radius:10px}.live-card .action-row{position:relative;z-index:1}.learning-route{display:grid;grid-template-columns:1fr 1.6fr;gap:24px;background:#eaf0e5;border:1px solid #d8e1d2;border-radius:16px;padding:24px;margin-bottom:24px;align-items:center}.learning-route h3{font-size:18px;line-height:1.7;margin:10px 0}.learning-route p{margin:0;font-size:12px}.route-actions{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.route-actions button{background:#fffdf9;color:var(--ink);border:1px solid #dce4d6;display:flex;align-items:center;gap:12px;text-align:left;padding:15px}.route-actions button>span{font-size:11px;color:#849d79}.route-actions b{font-size:13px}.route-actions i{margin-left:auto;font-style:normal;color:#709372}.quick-actions button,.student-tools button{border-radius:14px;background:var(--paper);border-color:var(--line)}.quick-actions button:hover,.route-actions button:hover,.student-tools button:hover{border-color:#91b29a;box-shadow:0 4px 16px #244e3210}.quick-actions small{font-size:11px}.secondary{background:#edf3ec;color:#355f4c;border:1px solid #dce7da}.table-scroll{border:1px solid var(--line);border-radius:12px}th{background:#f3f5ef}td,th{padding:15px 12px}.material{padding:23px 0}.teaching-panel>.material{border:1px solid var(--line);border-radius:14px;background:#fffefb;padding:22px;margin-top:16px}.source-note{font-size:12px;border-top:1px dashed var(--line);padding-top:12px}.roster-overview{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:24px 0 15px}.roster-overview>div{background:#f0f5ec;border:1px solid #e0e8da;border-radius:12px;padding:20px}.roster-overview strong{display:block;font-size:26px;font-weight:600;margin-bottom:9px}.roster-overview small{font-size:14px}.roster-overview span{font-size:12px;color:#6b826b}.next-action{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;border-left:3px solid #a5b57d;background:#f5f5e8;border-radius:6px;padding:16px;margin-bottom:23px;line-height:1.8}.next-action>b{font-size:12px;color:#6a7854}.next-action>span{font-size:13px}.next-action small{flex-basis:100%;font-size:11px}.roster-group{margin-top:25px}.member-card{background:#fafbf7;border:1px solid var(--line);border-radius:12px;padding:20px;margin:10px 0;position:relative}.member-avatar{display:inline-flex;width:34px;height:34px;background:#deebdc;color:#3e6a4b;border-radius:11px;align-items:center;justify-content:center;margin-right:10px;font-weight:600}.member-card p{margin:10px 0;font-size:13px}.roster-panel form,.teaching-panel form{background:#f7f8f3;border:1px solid var(--line);border-radius:14px;padding:23px;margin-top:25px}.review-progress{padding:0;list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:18px 0 25px}.review-progress li{border-top:3px solid #e3e9df;padding-top:12px;display:flex;gap:8px;align-items:center;font-size:11px;color:#7b8b7c}.review-progress li span{display:inline-flex;align-items:center;justify-content:center;width:23px;height:23px;background:#eef1e8;border-radius:50%;flex-shrink:0}.review-progress .done{border-color:#86a27c;color:#54734f}.review-progress .current{border-color:#267254;color:#15513c}.review-progress .current span{background:#1f6a50;color:#fff}.review-state{display:inline-block;border-radius:6px;background:#eff4e9;padding:5px 10px;font-size:12px}.filter-chips{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0}.filter-chips button{background:#f3f6ef;color:#60745c;border:1px solid #dfe7d9;font-size:12px;padding:8px 12px}.filter-chips button.selected{background:#1b624c;color:#fff;border-color:#1b624c}.filter-chips small{margin-left:8px;color:inherit;opacity:.7}.practice-switch{display:flex;align-items:center;justify-content:space-between;gap:16px;background:#eff2e3;border-radius:12px;padding:18px 22px;margin-top:20px}.practice-switch b{font-size:14px}.practice-switch p{font-size:12px;margin:7px 0 0}.practice-switch button{flex-shrink:0}.recall-card textarea{background:#fffef9;min-height:120px}.recall-card details{background:#edf4e9;border-radius:8px}.empty{border:1px dashed #d9e3d2;border-radius:12px;background:#fafbf7;margin-top:20px}.login{background:radial-gradient(ellipse at 10% 20%,#d4e5cf,transparent 60%),#f0f2e9}.login h1{color:#234c3b;letter-spacing:-2px}.login form{border:1px solid #dce5d6;border-radius:22px;box-shadow:0 20px 70px #294d3012}.login form h2{font-size:23px}button:focus-visible,a:focus-visible{outline:3px solid #9bb662;outline-offset:3px}details summary{line-height:1.8}@media(max-width:1100px){main{padding:25px}.learning-route{grid-template-columns:1fr}.course-ribbon>span{padding:15px;gap:8px}.course-ribbon b{font-size:22px}}@media(max-width:650px){aside{padding:17px 15px;border-bottom:1px solid var(--line)}aside nav{margin-top:18px;padding-bottom:5px}nav button{padding:10px 14px;margin-right:5px}nav button span{display:none}.identity{padding:0;top:23px}.identity b{font-size:10px}main{padding:22px 16px}header{padding-bottom:16px;margin-bottom:23px}header h1{font-size:25px}.workspace-intro h2{font-size:25px;line-height:1.5}.course-ribbon{grid-template-columns:repeat(2,1fr);margin-top:18px}.course-ribbon>span{padding:14px 16px}.course-ribbon b{font-size:24px}.panel{padding:20px;border-radius:15px}.live-card,.student-mode .live-card{padding:23px}.live-card h2{font-size:23px;line-height:1.6}.learning-route{padding:20px;gap:18px}.route-actions button{padding:13px 10px;gap:7px}.route-actions b{font-size:12px}.roster-overview{gap:7px}.roster-overview>div{padding:14px 9px}.roster-overview strong{font-size:21px}.roster-overview span{font-size:11px}.roster-panel form,.teaching-panel form{padding:16px}.review-progress{grid-template-columns:1fr 1fr;gap:12px}.practice-switch{display:block;padding:17px}.teaching-panel>.material{padding:17px}.member-card{padding:17px}.student-mode .dashboard-grid{grid-template-columns:1fr}.login h1{font-size:34px}input,textarea,select{font-size:16px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.hub-hero{padding:28px 32px;background:#eaf0e5;border:1px solid #d7e2ce;border-radius:18px;margin-bottom:24px}.hub-hero h2{font-size:27px;line-height:1.6}.hub-chapters{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.hub-chapters .panel{margin:0}.hub-chapters h2{min-height:58px;line-height:1.5}.hub-counts{display:flex;gap:25px;padding:13px 0;border-top:1px solid #e0e7dc;border-bottom:1px solid #e0e7dc;font-size:13px}.hub-counts b{margin-left:8px;font-size:20px}.hub-tabs{display:flex;gap:7px;overflow-x:auto;padding:10px 0 16px;position:sticky;top:0;background:#f4f5f0;z-index:3}.hub-tabs button{white-space:nowrap;background:#fffdf9;color:#40634c;border:1px solid #d8e2d0;font-size:13px}.hub-tabs button.selected{background:#245e49;color:#fff}.hub-chapter-picker{display:flex;align-items:center;gap:20px}.hub-chapter-picker label{flex:1}.hub-text{padding:4px 0 15px;border-bottom:1px solid #e8eee2}.hub-text p{line-height:1.95}.hub-editor{border-top:4px solid #acb77f}.hub-editor textarea{min-height:110px}.hub-home-entry{display:flex;align-items:center;gap:20px;background:#fffdf9;color:#235743;border:1px solid #cbdac0;width:100%;text-align:left;margin-bottom:20px;padding:22px;border-radius:14px}.hub-home-entry span{font-size:18px;font-weight:700}.hub-home-entry b{font-size:13px;font-weight:400}.hub-home-entry i{margin-left:auto;font-style:normal;font-size:24px}.learning-hub nav button{width:auto;margin:0}.learning-hub form{margin-top:18px}@media(max-width:650px){.hub-chapters{grid-template-columns:1fr}.hub-hero{padding:21px}.hub-hero h2{font-size:22px}.hub-chapter-picker{display:block}.hub-tabs{top:0}.hub-home-entry{flex-wrap:wrap;gap:12px}.hub-home-entry b{flex-basis:100%}.hub-chapters h2{min-height:0}.hub-tabs button{padding:12px}}.learning-hub input[type=checkbox]{width:20px;height:20px;display:inline-block;margin-right:10px;vertical-align:middle;flex-shrink:0}.learning-hub fieldset{min-width:0;border:1px solid var(--line,#dce4da);border-radius:12px;padding:16px}.learning-hub .material{overflow-wrap:anywhere}.topic-activities fieldset{border:0;padding:0;min-width:0}.topic-list,.topic-counts{display:flex;flex-wrap:wrap;gap:12px}.topic-activities pre{overflow-wrap:anywhere;white-space:pre-wrap}.topic-activities input,.topic-activities textarea,.topic-activities select{max-width:100%;box-sizing:border-box}.topic-activities details{margin:12px 0}.topic-activities .panel{min-width:0}.roster-subgroups{margin:20px 0;padding:18px;background:var(--cream,#f7f6f0);border-radius:14px}.subgroup-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:14px}.subgroup-bucket{padding:14px;background:#fff;border:1px solid #dde5dd;border-radius:12px;min-width:0}.subgroup-person{padding:12px 0;border-top:1px solid #e2e8e2}.subgroup-person select{width:100%;max-width:100%}:root{--workspace-ink:#203d35;--workspace-muted:#657870;--workspace-line:#dfe8e3;--workspace-accent:#216b55}body{background:#f4f7f5;color:var(--workspace-ink);font-family:Segoe UI,Microsoft YaHei,sans-serif}.panel,.live-card,.group-progress{border:1px solid var(--workspace-line);border-radius:14px;box-shadow:0 3px 14px #193b2b05}.panel{padding:24px;margin-bottom:20px;background:#fff}h1,h2,h3{letter-spacing:0;overflow-wrap:anywhere}h1{font-size:28px}h2{font-size:21px;line-height:1.5}h3{font-size:17px;line-height:1.6}p{line-height:1.8}button{border-radius:9px;min-height:42px;line-height:1.5;white-space:normal;overflow-wrap:anywhere}button:disabled{opacity:.55;cursor:not-allowed}input,select,textarea{border:1px solid #cbd9d1;border-radius:9px;max-width:100%;font:inherit}textarea,label{line-height:1.7}button.secondary{border:1px solid #ccddd3;background:#f7faf8;color:#285d48}.workspace-intro .eyebrow,.learning-route,.course-ribbon,.student-dashboard>.action-row,.student-tools{display:none}.workspace-intro h2{font-size:23px}.live-card,.student-mode .live-card{background:#f0f7f3;color:#234b3d;border-left:4px solid #357b5b}.live-top .pill{background:#dceee3;color:#275b44}.live-task{background:#fff;border:1px solid #dce8e0}.home-overview .section-title{gap:12px;align-items:center}.todo-actions{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.todo-action{background:#f2f7f4;color:#24583f;text-align:left;padding:18px;border:1px solid #dae7de}.todo-action strong{display:block;font-size:28px;font-weight:650}.todo-action span{display:block;font-size:13px;margin-top:6px}.overview-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.group-progress{padding:20px;background:#fcfdfc}.group-progress h3{margin-top:0}.group-progress select{width:100%}.group-progress .action-row{flex-wrap:wrap}.group-progress .action-row button{flex:1}.discussion-hub{display:flex;flex-direction:column}.discussion-hub>.panel{order:2}.discussion-hub>.panel:first-child{order:1}.discussion-hub>.received-questions{order:0;border-top:3px solid #397b5b}.discussion-hub article{padding:20px 0;border-bottom:1px solid var(--workspace-line)}.discussion-hub article h3{white-space:pre-wrap}.discussion-hub article details{background:#f5f8f6;border-radius:9px;padding:12px;margin:12px 0}.discussion-hub article summary{cursor:pointer;color:#35634c}.notice,[role=alert]{overflow-wrap:anywhere}.table-scroll{max-width:100%;overflow:auto}@media(max-width:650px){.panel,.group-progress{padding:16px}.overview-grid{grid-template-columns:1fr}.todo-actions{grid-template-columns:repeat(2,minmax(0,1fr))}.home-overview .section-title{flex-wrap:wrap}.todo-action{padding:14px}.panel h2{font-size:19px}main h1{font-size:24px}.form-grid{grid-template-columns:1fr}input,select,textarea{font-size:16px}.group-progress .action-row{display:grid;grid-template-columns:1fr}.panel,.live-card{overflow-wrap:anywhere}main{min-width:0}}.live-card p,.live-card label,.live-card .live-task{color:#35584a}.live-card .live-task b{color:#234b3d}.live-card:after{display:none}.live-card button{background:#216b55;color:#fff}.live-card button.secondary{background:#fff;color:#285d48;border:1px solid #cbdcd1}.live-card .pill{background:#dceee3;color:#275b44;border:1px solid #c7dfd0}.panel button:not(.secondary):not(.inbox-item):not(.todo-action){background:#216b55;color:#fff}.question-manager fieldset{border:0;padding:0;min-width:0}.question-check{display:flex;align-items:center;gap:12px;font-weight:600;cursor:pointer}.question-check input{width:22px;height:22px;margin:0;flex-shrink:0}.management-row{padding:20px 0;border-bottom:1px solid #dfe8e3;overflow-wrap:anywhere}.batch-confirm{background:#fff9ec;border:2px solid #d7b46c;padding:20px;border-radius:12px;margin:18px 0}.batch-confirm ul{max-height:260px;overflow:auto;padding-left:22px}.batch-confirm li{overflow-wrap:anywhere}.question-manager [aria-pressed=false]{background:#f0f4f1!important;color:#275340!important}.question-manager small{display:block;line-height:1.8;overflow-wrap:anywhere}@media(max-width:650px){.question-manager .action-row{display:flex;flex-wrap:wrap}.question-manager .action-row button{flex:1 1 130px}.batch-confirm{padding:14px}}.question-manager{padding:16px 20px}.question-manager>h2{margin:0 0 8px}.question-manager>.action-row{margin:8px 0}.question-manager .action-row{gap:8px;margin:8px 0}.question-manager .action-row button{padding:7px 12px;min-height:38px}.question-manager .management-filters{margin:8px 0;padding:6px 10px;border:1px solid var(--workspace-line);border-radius:8px}.management-filters summary{cursor:pointer;font-size:14px}.question-manager .management-filters .form-grid{margin:8px 0;gap:8px 12px;grid-template-columns:repeat(4,minmax(0,1fr))}.question-manager .notice{padding:10px 12px;margin:10px 0}.question-manager .result-summary{margin:0;line-height:1.6}.question-manager .result-details{margin-top:4px}.question-manager .result-details[open]{max-height:220px;overflow:auto}.question-manager .management-row{padding:12px 0}.question-manager .management-row h3{margin:6px 0}.question-manager .management-row p{margin:4px 0}.question-manager .batch-confirm{padding:12px;margin:10px 0}.question-manager .batch-confirm h3,.question-manager .batch-confirm p{margin:6px 0}.question-manager .batch-confirm ul{max-height:180px;margin:8px 0}@media(max-width:650px){.question-manager{padding:12px}.question-manager .management-filters .form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.question-manager .action-row button{flex:1 1 110px}.question-manager .result-details[open]{max-height:180px}}.discussion-hub .ask-panel{padding:16px 20px}.ask-panel h2{display:inline-block;margin:0 16px 8px 0}.ask-panel>p{margin:4px 0;font-size:13px;line-height:1.6}.discussion-hub .ask-panel fieldset{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 16px;padding:10px 12px;margin-top:10px}.ask-panel fieldset>p,.ask-panel fieldset>label:has(textarea){grid-column:1/-1;margin:0}.ask-panel fieldset>label{margin:0;min-width:0}.ask-panel textarea{min-height:72px;height:72px;margin:4px 0;resize:vertical}.ask-panel select{padding:7px 10px;margin:4px 0}.ask-panel fieldset>button{justify-self:start;padding:7px 18px;min-height:38px}.ask-panel fieldset>label:has(textarea){display:block}@media(max-width:650px){.discussion-hub .ask-panel{padding:12px}.discussion-hub .ask-panel fieldset{gap:8px;padding:10px}.ask-panel textarea{height:80px;min-height:80px}}.management-back{order:0;margin:0 0 10px}.management-back button{padding:5px 10px;min-height:36px}.question-manager .notice{font-size:13px}.question-manager .result-details summary{line-height:1.5}.question-manager>.notice details{padding:0;background:transparent}.question-manager>.notice p{line-height:1.5}.question-manager>.notice .result-summary{margin:0}.app main,.app.student-mode main{max-width:none;margin-right:0}@media(min-width:651px){.app{--sidebar-width:288px}.app aside{width:var(--sidebar-width);height:100vh;height:100dvh;padding:18px 14px;overflow:hidden}.app main{margin-left:var(--sidebar-width);width:calc(100% - var(--sidebar-width));padding:24px 28px}.app aside .brand{flex-shrink:0;font-size:27px;gap:9px}.app aside .term{flex-shrink:0;margin:12px 0 8px;padding:8px 10px;line-height:1.5}.app aside .term label{margin:4px 0}.app aside .term select{padding:6px 8px;margin-top:4px}.app aside nav{flex:1 1 0;min-height:0;overflow-y:auto;overflow-x:hidden;scrollbar-gutter:stable;padding-right:3px}.app aside nav button{min-height:38px;padding:8px 10px;margin:2px 0;line-height:1.5}.app aside .identity{flex-shrink:0;margin-top:8px;padding:10px 6px 0}.app aside .identity small{margin:4px 0}}@media(min-width:651px)and (max-width:1100px){.app{--sidebar-width:248px}.app main{padding:20px}}