:root{--ink:#203d38;--muted:#7a8b86;--line:#e1e8e3;--green:#25725d;--bg:#f5f7f2;--red:#c15b4c}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif}button,select,input{font:inherit}button{cursor:pointer;border:1px solid var(--line);background:white;color:var(--ink);padding:9px 15px;border-radius:8px}button:hover{border-color:var(--green);background:#edf4ee}button.primary{background:var(--green);color:white;border-color:var(--green)}.shell{display:grid;grid-template-columns:218px 1fr;min-height:100vh}aside{background:#173f35;color:#d9e8df;padding:32px 22px;display:flex;flex-direction:column;gap:25px}.brand{font-size:25px;font-weight:700;letter-spacing:3px}.brand small{display:block;font-size:10px;letter-spacing:2px;font-weight:400;color:#a5c2b5}.nav{padding:12px;border-radius:8px;cursor:pointer}.nav.active{background:#31584b;color:white}.sidefoot{margin-top:auto;font-size:11px;color:#a9c2b6}main{min-width:0;padding:26px 40px;max-width:1600px}.top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:20px}.eyebrow{font-size:11px;letter-spacing:2px;color:var(--muted)}h1{font-size:27px;letter-spacing:-.8px;margin:6px 0}h2{font-size:18px;margin:0 0 12px}h3{font-size:15px;margin:0 0 8px}p{margin:6px 0}.muted{color:var(--muted)}.badge{display:inline-block;background:#edf1e8;color:#6b795a;border-radius:5px;padding:3px 8px;font-size:11px}.banner{padding:12px 17px;background:#faf3df;border:1px solid #ebdfbc;border-radius:9px;color:#8a7444;font-size:12px;margin:20px 0}.student{display:flex;justify-content:space-between;align-items:center;margin:24px 0}.avatar{height:46px;width:46px;border-radius:50%;background:#e6dfc9;display:grid;place-items:center;font-size:19px}.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:20px 0}.stat,.panel{background:white;border:1px solid var(--line);border-radius:12px;padding:20px}.stat strong{font-size:30px;font-weight:500;display:block;margin-top:5px}.stat small{color:var(--muted)}.layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:20px}.sectionhead{display:flex;justify-content:space-between;align-items:center;margin:6px 0 18px}.legend{font-size:11px;display:flex;gap:15px}.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#b5beb8;margin-right:5px}.dot.red{background:var(--red)}.dot.green{background:var(--green)}.modules{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.module{background:white;border:1px solid var(--line);border-radius:11px;overflow:hidden}.modhead{padding:19px;cursor:pointer}.modhead:hover{background:#fafcf9}.modnum{color:#b4bfb6;font-size:11px}.modtitle{display:flex;justify-content:space-between;font-size:17px;font-weight:600;margin:7px 0 15px}.progress{background:#eef1ed;height:5px;border-radius:4px;overflow:hidden;margin:8px 0}.progress i{display:block;height:100%;background:#6c9d83}.modmeta{display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}.nodes{border-top:1px solid var(--line);padding:8px 14px}.node{display:flex;align-items:center;justify-content:space-between;padding:10px 3px;cursor:pointer;border-bottom:1px solid #f0f2ef}.node:last-child{border:0}.node:hover{background:#f5f8f3}.status{font-size:10px;border-radius:4px;padding:2px 7px;background:#edf0ed;color:#829087}.status.red{background:#fbebe6;color:#b55548}.status.green{background:#e8f2eb;color:#2d745b}.upload{border:1px dashed #b9cbbd;border-radius:10px;padding:20px 12px;text-align:center;background:#f9fbf7;margin:12px 0}.upload input{max-width:100%;font-size:11px}label{display:block;margin:10px 0}.right .panel{margin-bottom:15px}.small{font-size:12px}.listitem{padding:12px 0;border-bottom:1px solid var(--line)}.link{border:0;background:none;color:var(--green);padding:3px 0;font-size:12px}.view{display:none}.view.active{display:block}.activity{border-left:2px solid #d8e5d9;margin:15px 5px;padding-left:20px}.activity article{margin-bottom:22px}.activity time{font-size:11px;color:var(--muted)}dialog{border:1px solid var(--line);border-radius:16px;padding:28px;width:650px;max-width:94vw;color:var(--ink);max-height:90vh}dialog::backdrop{background:#173f3566;backdrop-filter:blur(3px)}.close{float:right}.evidence{background:#f7f8f3;border-radius:8px;padding:17px;margin:14px 0}.answer{width:100%;padding:10px;border:1px solid #cbd7cc;border-radius:7px}.notice{padding:12px;background:#edf5ed;border-radius:8px;margin:10px 0}.steps{display:flex;gap:6px;margin:15px 0}.steps span{background:#edf1e8;padding:6px 9px;border-radius:5px;font-size:11px}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#173f35;color:white;padding:13px 25px;border-radius:9px;z-index:9;box-shadow:0 8px 30px #0002}.preview{width:100%;max-height:350px;object-fit:contain}select{border:1px solid var(--line);border-radius:7px;padding:8px;background:white;color:var(--ink)}@media(max-width:1100px){main{padding:24px}.layout{grid-template-columns:1fr}.right{display:grid;grid-template-columns:1fr 1fr;gap:14px}}@media(max-width:720px){.shell{grid-template-columns:1fr}aside{padding:15px;flex-direction:row;align-items:center;gap:8px;flex-wrap:wrap}.brand{font-size:19px}.brand small,.sidefoot{display:none}.nav{padding:6px;font-size:12px}main{padding:18px}.top{align-items:start}.stats{grid-template-columns:1fr 1fr}.modules,.right{grid-template-columns:1fr}.legend{gap:5px}.top .row{justify-content:end}h1{font-size:23px}}
.nav{display:block;width:100%;text-align:left;border:0;background:none;color:inherit}.nav:hover{background:#31584b}.sub{font-size:11px;opacity:.75}.unit{border-top:1px solid var(--line);padding:10px 14px}.unit summary{cursor:pointer;font-weight:600;padding:5px 0}.unit .node{font-size:12px;gap:8px}.node button{padding:0;border:0;text-align:left;background:none;flex:1}.badges{display:flex;gap:5px;flex-wrap:wrap}.secondary{background:#f7f9f4}.status.amber{color:#9a752f;background:#faf0d6}.full{width:100%}.tabs{display:flex;gap:8px;margin:15px 0;flex-wrap:wrap}.tabs button.active{background:#25725d;color:white}textarea{min-height:180px;resize:vertical;font:12px/1.7 ui-monospace,monospace}.formgrid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.formgrid label{margin:0}.formgrid .wide{grid-column:1/-1}input,textarea,select{max-width:100%}.formgrid textarea{min-height:75px}.tablewrap{overflow:auto}table{width:100%;border-collapse:collapse;font-size:12px}td,th{text-align:left;padding:12px 9px;border-bottom:1px solid var(--line);vertical-align:top}.time{font-size:11px;color:var(--muted)}.evidence p{overflow-wrap:anywhere}.panel+.panel{margin-top:15px}.pill{font-size:10px;padding:2px 6px;border:1px solid #e0e6dd;border-radius:4px}.filecard{padding:14px;background:#f6f8f4;border-radius:8px;margin:10px 0}.warn{color:#a47531}.lesson{font-size:15px;line-height:1.9}.error{color:#b55548}.empty{padding:30px;text-align:center;color:var(--muted)}.filter{width:100%;margin-bottom:14px}.modalhead{padding-right:60px}dialog{width:780px}details[open]>summary{margin-bottom:6px}a{color:var(--green)}.notice.error{background:#fbebe6}.spaced{margin-top:15px}button:focus-visible,summary:focus-visible{outline:2px solid #90b3a0;outline-offset:3px}aside{position:sticky;top:0;height:100vh}.mobilelabel{display:none}@media(max-width:720px){aside{position:static;height:auto}.nav{width:auto}.formgrid{grid-template-columns:1fr}.formgrid .wide{grid-column:auto}.student{align-items:start;gap:10px}.student>.primary{font-size:12px;padding:9px}.stats{gap:8px}.stat{padding:14px}.sectionhead{align-items:start;flex-direction:column;gap:10px}.modhead{padding:15px}.row{gap:8px}}.loginpage{min-height:100vh;display:grid;grid-template-columns:1.15fr 1fr}.loginintro{background:#173f35;color:#f0f4e9;padding:12vh 9vw}.loginintro h1{font-size:44px;line-height:1.3;margin:45px 0 25px}.loginintro p{color:#bdd0bf;max-width:420px}.loginintro .brand{font-size:32px}.logincard{padding:12vh 7vw;max-width:620px;width:100%;margin:auto}.logincard h2{font-size:25px}.logincard input{margin-top:7px;padding:12px}.serverstamp{padding:9px 12px;border:1px solid #4e7560;border-radius:8px;font-size:12px;margin-top:35px;display:inline-block}.student-shell aside{background:#263e61}.student-shell .nav.active{background:#405a7a}.student-shell .nav:hover{background:#405a7a}.student-shell .primary{background:#355e86;border-color:#355e86}.taskcard{padding:20px;border:1px solid var(--line);border-radius:10px;background:white;margin:12px 0}.taskcard h3{font-size:17px}.secret{font:15px/1.7 ui-monospace,monospace;background:#f5f2df;padding:16px;border-radius:8px;overflow-wrap:anywhere}.alertsmall{font-size:12px;color:#986d30}.errorbox{color:#a94b42;background:#fbebe6;border-radius:8px;padding:10px;margin:10px 0}.accountbar{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.loginform button{width:100%;margin-top:16px}.taskkind{font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--muted)}.course-actions{display:flex;gap:9px;margin:20px 0}.practice-input{margin:12px 0}.credentials td{font-family:ui-monospace,monospace;word-break:break-all}.serverbadge{background:#e6efe8;color:#32694e;font-size:11px;border-radius:6px;padding:5px 9px}.note{color:var(--muted);font-size:12px}.loginform label{font-size:13px}.loginlinks{display:flex;gap:15px;margin-top:20px}.loginlinks a{font-size:12px}.student-shell h1{font-size:28px}.primary:disabled{opacity:.5;cursor:default}.taskgrid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.recovery{border:1px solid #d7e3d6;border-radius:9px;padding:14px}.top .accountbar{justify-content:flex-end}.classselect{margin-bottom:15px}@media(max-width:800px){.loginpage{grid-template-columns:1fr}.loginintro{padding:35px 25px}.loginintro h1{font-size:28px;margin:20px 0}.loginintro .serverstamp{margin-top:15px}.logincard{padding:30px 25px}.taskgrid{grid-template-columns:1fr}.top{flex-direction:column;gap:12px}.top .accountbar{justify-content:flex-start}}@media print{aside,button,.accountbar{display:none}main{padding:0}.shell{display:block}}
@media(max-width:720px){aside nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;width:100%}aside .nav{width:100%;padding:8px 9px;font-size:12px;white-space:nowrap}aside .sub{font-size:11px}.student-shell .student{margin:18px 0}.accountbar{min-height:36px}}
.form-error{white-space:normal;overflow-wrap:anywhere}.credentials td{min-width:100px}button[aria-busy="true"]{opacity:.65;cursor:progress}
.legend{flex-shrink:0;white-space:nowrap}.sectionhead{flex-wrap:wrap;gap:12px}@media(max-width:1100px){.modules{grid-template-columns:1fr}}
/* Role entry homepage */
.entry-home{min-height:100vh;background:radial-gradient(ellipse at 85% 15%,#e4ede3 0,transparent 45%),#f6f7f1;display:flex;flex-direction:column;color:#203d33}.entry-header{width:min(1120px,100%);margin:0 auto;padding:32px 40px;display:flex;justify-content:space-between;align-items:center;gap:20px}.entry-brand{font-size:30px;font-weight:700;letter-spacing:2px;text-decoration:none;display:flex;align-items:center;gap:18px;color:#173f35}.entry-brand span{font-size:13px;font-weight:400;letter-spacing:1px;border-left:1px solid #cbd7cc;padding-left:18px}.entry-motto{font-size:12px;color:#6c7d70;letter-spacing:1px}.entry-main{width:min(1120px,100%);padding:36px 40px 24px;margin:0 auto;flex:1}.entry-intro{text-align:center;margin-bottom:44px}.entry-intro .eyebrow{letter-spacing:3px;color:#6a816d;font-size:12px}.entry-intro h1{font-size:clamp(34px,4vw,52px);line-height:1.25;letter-spacing:-1.5px;margin:18px 0}.entry-break{display:none}.entry-intro p{font-size:15px;line-height:1.9;color:#708073}.entry-roles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.entry-role{display:flex;flex-direction:column;border:1px solid #d6e0d5;background:#fff;border-radius:20px;padding:30px 32px;text-decoration:none;color:#203d33;box-shadow:0 10px 32px #173f3505;transition:transform .18s,border-color .18s,box-shadow .18s}.entry-role:hover{transform:translateY(-4px);border-color:#739985;box-shadow:0 16px 36px #173f3510}.entry-role:focus-visible,.entry-brand:focus-visible{outline:3px solid #32755d;outline-offset:5px}.entry-role-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:24px}.entry-icon{width:62px;height:62px;border-radius:17px;background:#eaf1e8;display:grid;place-items:center;color:#2b6652}.entry-role-label{font-size:11px;letter-spacing:1px;color:#7d8d80}.entry-role h2{font-size:30px;line-height:1.3;margin:0 0 14px}.entry-role h3{font-size:16px;font-weight:500;margin:0 0 10px}.entry-role p{font-size:14px;line-height:1.85;color:#708073;max-width:350px;margin:0 0 26px}.entry-cta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding:15px 18px;border-radius:10px;background:#245e4c;color:white;font-size:15px;font-weight:600}.entry-cta>span{font-size:23px;font-weight:400;line-height:1}.entry-student{background:#f8fafc;border-color:#d6e0e7}.entry-student .entry-icon{background:#e6edf5;color:#365e84}.entry-student .entry-cta{background:#365e84}.entry-student:hover{border-color:#7594b0}.entry-student:focus-visible{outline-color:#365e84}.entry-help{text-align:center;margin:26px 0 0;font-size:12px;color:#7a887b}.entry-footer{text-align:center;padding:24px 20px;font-size:11px;letter-spacing:1px;color:#8a978b}.loginlinks a:focus-visible{outline:2px solid #32755d;outline-offset:5px}
@media(max-width:720px){.entry-header{padding:24px}.entry-brand{font-size:26px;gap:12px}.entry-brand span{font-size:11px;padding-left:12px}.entry-motto{display:none}.entry-main{padding:24px 24px 12px}.entry-intro{margin-bottom:28px;text-align:left}.entry-intro h1{font-size:36px;margin:16px 0}.entry-break{display:block}.entry-intro p{font-size:13px}.entry-intro p br{display:none}.entry-roles{grid-template-columns:1fr;gap:18px}.entry-role{padding:24px;border-radius:16px}.entry-role-top{margin-bottom:20px}.entry-icon{width:52px;height:52px;border-radius:14px}.entry-role h2{font-size:26px}.entry-role h3{font-size:15px}.entry-role p{font-size:13px;margin-bottom:22px}.entry-cta{font-size:14px}.entry-help{text-align:left;line-height:1.8;margin-top:22px}.entry-footer{font-size:10px;padding:20px}}
@media(prefers-reduced-motion:reduce){.entry-role{transition:none}.entry-role:hover{transform:none}}