:root{--deep:#194c43;--ink:#223c35;--muted:#65796f;--line:#dce5dc;--paper:#f7f8f3;--soft:#eaf0e7;--error:#9c2d26;--warning:#7d551e;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;text-rendering:optimizeLegibility}
*{box-sizing:border-box}body{margin:0;min-height:100vh;display:flex;flex-direction:column;font-size:16px;line-height:1.65}a{color:var(--deep);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:4px}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #6f9c87;outline-offset:3px}[tabindex="-1"]:focus{outline:none}[hidden]{display:none!important}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--deep);line-height:1.35}h1{font-size:clamp(32px,3.3vw,46px);letter-spacing:-.035em;font-weight:650;margin-bottom:18px}h2{font-size:23px;margin-bottom:9px}h3{font-size:19px;margin-bottom:9px}p{margin-bottom:16px}.width{width:min(1220px,calc(100% - 64px));margin-inline:auto}main{flex:1}.site-header{background:#fff;border-bottom:1px solid var(--line)}.header-inner{min-height:86px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:11px;font-size:22px;font-weight:700;letter-spacing:-.04em}.brand:hover{text-decoration:none}.brand-mark{display:grid;place-items:center;width:36px;height:36px;background:var(--deep);color:#fff;border-radius:7px;font:24px Georgia,serif}.site-header nav{display:flex;gap:28px;font-size:14px}.site-header nav a{padding-block:9px}.skip-link{position:fixed;top:10px;left:10px;z-index:10;background:#fff;border:2px solid var(--deep);padding:9px 16px;transform:translateY(-160%)}.skip-link:focus{transform:none}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--deep);margin:0 0 15px}.entry-grid{display:grid;grid-template-columns:minmax(0,1fr) 420px;align-items:start;gap:90px;padding:90px 0 110px}.entry-intro{padding-top:20px}.intro-copy{color:var(--muted);font-size:18px;line-height:1.9;max-width:420px}.intro-rule{height:1px;width:70px;background:#a7bcae;margin:36px 0 24px}.intro-note{color:var(--muted);font-size:14px}.login-card{padding:34px;border:1px solid var(--line);border-radius:14px;background:#fff}.login-card>p{color:var(--muted);font-size:15px}.login-card .button{margin-top:10px}.form-help{padding-top:22px;margin:24px 0 0;border-top:1px solid var(--line);font-size:13px!important}.state-view{min-height:440px;padding:70px 0;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;color:var(--muted)}.state-view p{margin:18px 0}.state-view .eyebrow{margin:0 0 15px}.spinner{width:30px;height:30px;border:3px solid var(--line);border-top-color:var(--deep);border-radius:50%;animation:spin .8s linear infinite}.button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:10px 17px;border-radius:7px;border:1px solid transparent;font-size:14px;font-weight:600;line-height:1.5;text-align:center}.button:hover{text-decoration:none}.primary{color:#fff;background:var(--deep);border-color:var(--deep)}.primary:hover:not(:disabled){background:#236353}.outline{color:var(--deep);background:#fff;border-color:#bdcbbc}.outline:hover:not(:disabled){background:var(--soft)}.wide{width:100%}.danger{color:var(--error);border-color:#dfc2bc;background:#fff}.danger:hover:not(:disabled){background:#fff3ef}.dashboard{padding:44px 0 64px}.dashboard-heading{display:flex;align-items:center;justify-content:space-between;gap:25px}.dashboard-heading h1{font-size:38px;margin-bottom:12px}.identity{display:flex;align-items:center;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:14px;margin:0;overflow-wrap:anywhere}#admin-name{font-size:17px;color:var(--ink)}.badge{display:inline-flex;align-items:center;border-radius:4px;padding:3px 8px;background:var(--soft);color:var(--deep);font-size:12px;font-weight:500;line-height:1.5;white-space:nowrap}.badge.warning{color:var(--warning);background:#fff5df}.badge.inactive{color:#766f69;background:#f0ede8}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin:28px 0 32px;border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden}.stats>div{padding:21px 25px;border-right:1px solid var(--line)}.stats>div:last-child{border:0}.stats dt{font-size:13px;color:var(--muted);margin-bottom:7px}.stats dd{font-size:32px;color:var(--deep);font-weight:600;margin:0;line-height:1.25}.tabs{display:flex;gap:27px;border-bottom:1px solid var(--line);margin-bottom:21px}.tabs button{background:none;border:0;padding:11px 3px 14px;color:var(--muted);font-size:16px;border-bottom:3px solid transparent}.tabs button[aria-selected="true"]{border-bottom-color:var(--deep);color:var(--deep);font-weight:600}.panel{border:1px solid var(--line);background:#fff;border-radius:14px;overflow:hidden}.panel-heading{padding:23px 26px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px}.panel-heading h2{margin:0 0 5px;font-size:22px}.panel-heading p{margin:0;color:var(--muted);font-size:14px}.filters{padding:22px 26px 14px;display:flex;gap:18px;align-items:flex-end;flex-wrap:wrap}.filters .field{margin:0;width:210px}.filters .search-field{width:290px}.filters>p{color:var(--muted);font-size:13px;margin:0 0 12px auto}.field{margin-bottom:20px;min-width:0}.field label{display:block;margin-bottom:7px;font-size:14px;font-weight:600}.field input,.field select,.field textarea{width:100%;min-width:0;display:block;border:1px solid #bdcbbc;border-radius:7px;padding:10px 12px;color:var(--ink);background:#fff;line-height:1.5;font-size:16px;min-height:46px}.field textarea{resize:vertical}.field input[aria-invalid="true"],.field textarea[aria-invalid="true"]{border-color:var(--error)}.field-help{font-size:13px;color:var(--muted);margin:7px 0 0;line-height:1.65}.table-wrap{overflow-x:auto;width:100%}table{width:100%;border-collapse:collapse;text-align:left;font-size:14px}th{font-size:12px;color:var(--muted);font-weight:600;background:#f8faf6;white-space:nowrap}th,td{padding:14px 18px;border-bottom:1px solid #e7ece4;vertical-align:middle}th:first-child,td:first-child{padding-left:26px}th:last-child,td:last-child{padding-right:26px}tbody tr:last-child td{border-bottom:0}.student-id{font-variant-numeric:tabular-nums}.student-name{font-weight:600}.row-actions{display:flex;gap:8px;white-space:nowrap}.row-actions .button{min-height:36px;font-size:12px;padding:6px 11px}.actions-heading{min-width:190px}.list-status{padding:42px 26px;text-align:center;color:var(--muted);font-size:15px;margin:0}.list-error{padding:28px;color:var(--error)}.list-error p{margin-bottom:14px}.panel-footnote{font-size:12px;color:var(--muted);padding:17px 26px;border-top:1px solid var(--line);background:#fcfdf9;margin:0}.assignment-list{list-style:none;padding:0 26px;margin:0}.assignment-item{padding:24px 0;border-bottom:1px solid var(--line);display:flex;gap:24px;justify-content:space-between;align-items:flex-start}.assignment-item:last-child{border-bottom:0}.assignment-content{min-width:0}.assignment-item h3{overflow-wrap:anywhere;display:flex;gap:12px;align-items:center;flex-wrap:wrap}.assignment-description{white-space:pre-wrap;overflow-wrap:anywhere;color:var(--muted);font-size:14px;margin:0 0 10px;max-height:8.3em;overflow:auto}.assignment-meta{display:flex;flex-wrap:wrap;gap:5px 18px;font-size:12px;color:var(--muted)}.assignment-actions{display:flex;gap:9px;flex-shrink:0}.assignment-actions .button{min-height:38px;font-size:13px;padding:8px 12px}.notice{margin-top:22px;background:#edf5ed;color:var(--deep);border:1px solid #c9d9cc;border-radius:7px;padding:13px 17px;font-size:14px;overflow-wrap:anywhere}.notice.warning{background:#fff7e9;color:var(--warning);border-color:#ebd9b8}.form-error{margin:16px 0 0;padding:11px 13px;background:#fcf1ef;color:var(--error);border:1px solid #f1d7d0;border-radius:6px;font-size:14px;overflow-wrap:anywhere}.footer{border-top:1px solid var(--line);padding:24px 0 28px;font-size:12px;display:flex;justify-content:space-between;gap:20px;color:var(--muted)}.footer p{margin:0}dialog{color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:14px;width:min(520px,calc(100% - 32px));max-height:calc(100dvh - 40px);padding:28px;box-shadow:0 24px 80px #153a3533;overflow-y:auto}dialog::backdrop{background:#102b2680}.dialog-heading{display:flex;gap:15px;align-items:flex-start;justify-content:space-between;margin-bottom:18px}.dialog-heading h2{font-size:23px;margin:0}.icon-close{border:0;background:transparent;color:var(--muted);font-size:28px;line-height:1;width:34px;height:34px;border-radius:5px;margin:-4px -7px 0 0;flex-shrink:0}.icon-close:hover{background:var(--soft)}.selected-person{background:var(--soft);padding:12px 14px;border-radius:7px;font-size:14px;overflow-wrap:anywhere}.muted{color:var(--muted);font-size:14px}.confirm-description{white-space:pre-line;overflow-wrap:anywhere}.dialog-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:25px}.assignment-dialog{width:min(690px,calc(100% - 32px))}.form-columns{display:grid;grid-template-columns:1fr 1fr;gap:20px}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;border:0;clip:rect(0,0,0,0);overflow:hidden;white-space:nowrap}.noscript{position:fixed;inset:auto 15px 15px;background:#fff7e9;border:1px solid #ebd9b8;color:var(--warning);padding:20px;text-align:center;z-index:10}@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:1000px){.entry-grid{gap:50px;grid-template-columns:minmax(0,1fr) 380px}.stats>div{padding:20px}th,td{padding-inline:13px}.filters .search-field{width:260px}.filters .field:not(.search-field){width:185px}.student-id{font-size:13px}}
@media(max-width:760px){.width{width:calc(100% - 36px)}.header-inner{min-height:74px;gap:16px}.brand{font-size:20px}.site-header nav{font-size:12px;gap:16px}.entry-grid{grid-template-columns:1fr;gap:25px;max-width:500px;padding:38px 0 50px;margin-inline:auto}.entry-intro{padding:0}.intro-rule,.intro-note{display:none}.intro-copy{font-size:16px;margin:0}.login-card{padding:28px}.dashboard{padding:30px 0 42px}.dashboard-heading{align-items:flex-start;gap:16px}.dashboard-heading h1{font-size:32px}.dashboard-heading>.button{font-size:12px;padding:9px 12px}.identity{font-size:12px;gap:8px}.stats{grid-template-columns:repeat(2,minmax(0,1fr));margin:24px 0}.stats>div{padding:17px 20px}.stats>div:nth-child(1),.stats>div:nth-child(2){border-bottom:1px solid var(--line)}.stats>div:nth-child(2){border-right:0}.stats dd{font-size:29px}.stats dt{font-size:12px}.panel-heading{padding:20px;align-items:flex-start;gap:14px}.panel-heading h2{font-size:20px}.panel-heading p{font-size:12px}.panel-heading>.button{font-size:12px;flex-shrink:0;padding:8px 12px;min-height:40px}.filters{padding:18px 20px 14px;gap:12px;align-items:stretch}.filters .field,.filters .search-field,.filters .field:not(.search-field){width:100%}.filters>p{width:100%;margin:0}.field label{font-size:13px}.table-wrap{overflow:visible}table,tbody{display:block}thead{display:none}tbody tr{display:grid;grid-template-columns:1fr 1fr;gap:9px 18px;padding:18px 20px;border-bottom:1px solid var(--line)}tbody tr:last-child{border:0}td,td:first-child,td:last-child{display:block;padding:0;border:0;min-width:0;overflow-wrap:anywhere;font-size:14px}td::before{content:attr(data-label);display:block;font-size:11px;font-weight:400;color:var(--muted);margin-bottom:4px}.student-id{font-size:14px}.actions-cell{grid-column:1/-1;margin-top:5px}.actions-cell::before{display:none}.row-actions{justify-content:flex-end;gap:10px}.row-actions .button{min-height:40px;font-size:13px}.panel-footnote{padding:15px 20px}.assignment-list{padding-inline:20px}.assignment-item{flex-direction:column;gap:15px;padding:21px 0}.assignment-actions{align-self:flex-end}.assignment-item h3{font-size:18px}.footer{font-size:11px}.form-columns{grid-template-columns:1fr;gap:0}dialog{padding:23px;max-height:calc(100dvh - 28px)}.dialog-heading h2{font-size:21px}}
@media(max-width:390px){.width{width:calc(100% - 28px)}.brand{font-size:18px;gap:8px}.brand-mark{width:30px;height:30px;font-size:21px}.site-header nav{gap:12px;font-size:11px}.login-card{padding:23px}.dashboard-heading{flex-wrap:wrap}.dashboard-heading>.button{max-width:none;margin-left:auto}.stats>div{padding:16px}.panel-heading{flex-wrap:wrap}.panel-heading>.button{margin-left:auto}.identity #admin-account{flex-basis:100%}.entry-intro h1{font-size:30px}}
@media(prefers-reduced-motion:reduce){.spinner{animation:none;border-color:var(--deep)}}

.login-return{font-size:13px!important;line-height:1.7;margin:13px 0 6px}.state-view .button+.button{margin-top:14px}
.site-header nav{flex-wrap:wrap;justify-content:flex-end;gap:8px 22px}.site-header nav a[aria-current="page"]{color:var(--deep);font-weight:700;border-bottom:2px solid var(--deep)}.header-login{margin-left:auto}.quiet{background:transparent;color:var(--muted);border-color:transparent}.quiet:hover:not(:disabled){background:var(--soft)}
@media(max-width:760px){.header-inner{flex-wrap:wrap;padding-block:15px;gap:14px}.site-header nav{margin-left:auto;gap:5px 16px;font-size:12px}.header-login{font-size:13px;min-height:40px}}
@media(max-width:390px){.site-header nav{gap:4px 12px;font-size:11px}.site-header nav a{padding-block:7px}}

.classroom-tools{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}.classroom-tools a{display:inline-flex;align-items:center;min-height:44px;padding:10px 18px;border:1px solid var(--line,#cdd9d1);border-radius:7px;color:#194c43;background:#fff;text-decoration:none;font-weight:650}.classroom-tools a:hover{background:#edf4ef}.classroom-tools a:focus-visible{outline:3px solid #b57526;outline-offset:3px}

/* Always-visible site destinations; teaching permissions remain server-checked. */
.site-header .header-inner{flex-wrap:wrap}.site-header .brand{white-space:nowrap;flex-shrink:0}.site-header nav{flex-wrap:wrap;gap:8px 18px}.site-header nav a{white-space:nowrap}.site-header .site-switcher{margin-left:auto;display:flex;align-items:center;font-size:14px}.site-header .site-switcher a{display:inline-flex;align-items:center;min-height:40px}.site-header #admin-navigation{flex:1;justify-content:flex-end}
@media(max-width:760px){.site-header .header-inner{padding-block:12px;gap:8px 14px}.site-header .brand{font-size:17px}.site-header nav{font-size:12px;gap:5px 14px}.site-header #admin-navigation{flex-basis:100%}}
@media(max-width:390px){.site-header .brand{font-size:16px}.site-header .brand-mark{width:28px;height:28px}.site-header nav{gap:5px 12px}}