:root{--ink:#172c3b;--muted:#647582;--teal:#087f78;--teal-dark:#06635e;--line:#dce4e8;--surface:#f5f8f9;--amber:#fff1d4;--danger:#a62a27;--radius:8px;font-family:"Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif;color:var(--ink);font-size:16px;line-height:1.65;background:#fff;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:flex;flex-direction:column}button,input,select,textarea{font:inherit;line-height:1.4}button,a,input,select,textarea,summary{-webkit-tap-highlight-color:transparent}button,.button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border:1px solid #b9c9cf;border-radius:var(--radius);color:var(--ink);background:#fff;text-decoration:none;font-weight:600;cursor:pointer;text-align:center}button:hover,.button:hover{background:var(--surface);border-color:#7e989f}button:disabled{opacity:.55;cursor:wait}.primary{color:#fff;background:var(--teal);border-color:var(--teal)}.primary:hover{color:#fff;background:var(--teal-dark);border-color:var(--teal-dark)}.danger{color:var(--danger)}.quiet{border-color:transparent;background:transparent}.icon-button{padding:10px;min-width:44px}.icon{height:20px;width:20px;flex-shrink:0;vertical-align:middle}a{color:var(--teal);text-underline-offset:4px}:focus-visible{outline:3px solid #d58c12;outline-offset:3px}h1,h2,h3,p{margin-top:0}h1{font-size:32px;line-height:1.25;letter-spacing:-.8px;margin-bottom:12px}h2{font-size:22px;line-height:1.4;margin-bottom:16px}h3{font-size:18px;line-height:1.4;margin-bottom:6px}p{margin-bottom:16px}small,.small{font-size:14px}.muted{color:var(--muted)}strong{font-weight:650}header{border-bottom:1px solid var(--line)}.header-inner{max-width:1180px;margin:auto;min-height:78px;padding:12px 28px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;flex-direction:column;flex-shrink:0;gap:3px;font-size:25px;font-weight:750;line-height:1.2;letter-spacing:-.7px;color:var(--ink);text-decoration:none;white-space:nowrap}.brand-en{font-size:12px;font-weight:600;letter-spacing:.5px;color:var(--teal-dark)}.header-nav{display:flex;gap:14px;align-items:center}.nav-link{font-weight:650;text-decoration:none;min-height:44px;display:flex;align-items:center;padding:5px 0}.user-menu{position:relative}.user-menu>summary{list-style:none;display:flex;min-height:44px;align-items:center;gap:8px;cursor:pointer}.user-menu>summary::-webkit-details-marker{display:none}.user-menu[open] .user-dropdown{position:absolute;right:0;top:48px;min-width:200px;z-index:10;background:#fff;border:1px solid var(--line);border-radius:8px;padding:12px;box-shadow:0 10px 24px #172c3b15}.user-dropdown button{width:100%}.demo-banner{background:var(--amber);padding:10px 24px;text-align:center;font-size:14px;color:#64450f}.production-banner{padding:8px;text-align:center;background:#edf6f5;font-size:14px}main{width:100%;max-width:1136px;padding:48px 28px 72px;margin:0 auto;flex:1}footer{border-top:1px solid var(--line);text-align:center;color:var(--muted);font-size:13px;padding:18px}.page-head{display:flex;gap:24px;align-items:center;justify-content:space-between;margin-bottom:32px}.page-head p{margin-bottom:0;color:var(--muted)}.page-head>.primary{padding:14px 24px;font-size:18px}.activity-list{border-top:1px solid var(--line)}.activity-row{color:var(--ink);text-decoration:none;padding:23px 0;display:grid;grid-template-columns:minmax(220px,1fr) 115px minmax(180px,1.6fr) 24px;gap:24px;align-items:center;border-bottom:1px solid var(--line)}.activity-row:hover{background:var(--surface)}.activity-row h2{margin:0 0 3px;font-size:21px}.activity-description{font-size:15px}.status{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;font-size:14px;font-weight:650}.status-open{color:var(--teal)}.status-draft,.status-archived,.status-closed{color:var(--muted)}.status-cancelled{color:var(--danger)}.tip{display:flex;gap:10px;color:var(--muted);font-size:14px;margin-top:24px;align-items:flex-start}.tip .icon{margin-top:2px}.empty{padding:52px 16px;text-align:center;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.empty p{color:var(--muted);margin:0}.loading{padding:40px;color:var(--muted);text-align:center}.back{display:inline-flex;align-items:center;gap:5px;text-decoration:none;font-size:14px;margin-bottom:24px}.narrow{max-width:780px;margin:auto}.login{max-width:570px;margin:0 auto;padding:20px 0}.login h1{font-size:34px}.account-list{margin:24px 0;border-top:1px solid var(--line)}.account-row{display:flex;gap:20px;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:14px 0}.account-row p{margin:0;font-size:14px;color:var(--muted)}.account-row strong{display:block}.section{padding:28px 0;border-top:1px solid var(--line);margin-top:24px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.field{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}.form-grid .field{margin-bottom:0}.field>span{font-size:15px;font-weight:650}.field small{font-size:13px;color:var(--muted);font-weight:400}input:not([type=checkbox]):not([type=radio]),select,textarea{width:100%;border:1px solid #b8c8cf;border-radius:6px;min-height:46px;padding:10px 12px;color:var(--ink);background:#fff;font-size:16px}textarea{resize:vertical}input[type=checkbox],input[type=radio]{accent-color:var(--teal);width:20px;height:20px;flex-shrink:0;margin:0}.check{display:flex;align-items:center;gap:10px;min-height:44px;font-size:15px;cursor:pointer}.check+.check{margin-top:4px}.form-grid+.check{margin-top:18px}.actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:24px}.actions.end{justify-content:flex-end}.more-settings{margin-top:24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}summary{cursor:pointer;min-height:48px;padding:14px 0;font-weight:650}summary .muted{font-size:13px;font-weight:400;margin-left:12px}.details-content{padding:12px 0 24px}.steps{display:flex;gap:24px;color:var(--muted);font-size:14px;margin:0 0 28px;padding:0;list-style:none}.steps .active{color:var(--teal);font-weight:700}.steps li{display:flex;align-items:center;gap:8px}.step-number{width:26px;height:26px;border:1px solid var(--line);border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:12px}.active .step-number{background:var(--teal);color:#fff;border-color:var(--teal)}.alert{padding:14px 18px;background:#edf6f5;border-left:3px solid var(--teal);margin:20px 0;border-radius:0 6px 6px 0;font-size:14px}.alert p:last-child{margin-bottom:0}.alert.warning{background:#fff7e7;border-color:#bc7f16;color:#714d0c}.alert.error{background:#fff0ef;border-color:var(--danger);color:#872523}.toolbar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:18px}.toolbar .field{margin:0;flex:1;min-width:180px}.toolbar button{white-space:nowrap}.selection-summary{padding:14px 0;display:flex;flex-wrap:wrap;gap:8px 20px}.selection-summary strong{color:var(--teal)}.table-scroll{overflow:auto;max-height:420px;border:1px solid var(--line);border-radius:6px}table{width:100%;border-collapse:collapse;font-size:14px;text-align:left}th{background:var(--surface);color:var(--muted);font-size:13px;font-weight:600;position:sticky;top:0;z-index:1}th,td{padding:11px 14px;border-bottom:1px solid var(--line);white-space:nowrap}tr:last-child td{border-bottom:0}td .check{min-height:32px}.pool-kind{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:24px}.pool-kind button{justify-content:flex-start;padding:14px}.pool-kind button.selected{background:#edf6f5;border-color:var(--teal);color:var(--teal)}.class-checks{display:flex;gap:12px 24px;flex-wrap:wrap}.stats-line{display:flex;gap:16px 28px;flex-wrap:wrap;margin:24px 0;color:var(--muted);padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.stats-line strong{color:var(--ink);font-size:21px;margin-left:5px}.activity-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.activity-heading h1{margin-top:10px}.activity-heading p{color:var(--muted);font-size:14px}.activity-heading>.actions{margin-top:0}.group-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.group-card{border:1px solid var(--line);border-radius:8px;padding:22px}.group-card.mine{border-color:var(--teal);background:#f3faf9}.group-top{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.group-top h3{margin-bottom:4px}.capacity{font-weight:650;white-space:nowrap;color:var(--teal)}.members{list-style:none;padding:0;margin:16px 0}.members li{padding:6px 0;display:flex;align-items:center;gap:8px;font-size:14px}.leader{font-size:11px;border:1px solid #b3cdca;padding:1px 6px;border-radius:4px;color:var(--teal)}.group-card .actions{margin-top:16px}.group-card .actions button{font-size:14px;padding:8px 12px}.group-warning{color:#8c611c;font-size:13px;margin:12px 0 0}.group-topic{font-size:14px;color:var(--muted);margin-bottom:0}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:20px}.section-heading h2{margin:0}.my-state{margin:24px 0 32px}.my-state>h2{font-size:20px}.my-state .group-card{max-width:640px}.list-row{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}.list-row p{margin:3px 0 0;color:var(--muted);font-size:13px}.list-row .actions{margin:0}.inline-form{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}.inline-form .field{flex:1;min-width:180px;margin:0}.inline-form button{margin-bottom:0}.plain-list{padding-left:22px;margin:10px 0}.plain-list li{margin:6px 0}.rule-summary{font-size:14px;color:var(--muted);margin:16px 0}.split{display:grid;grid-template-columns:1fr 1fr;gap:32px}.help-text{font-size:13px;color:var(--muted)}.sticky-action{background:#fff;border-top:1px solid var(--line);padding-top:24px;margin-top:28px;display:flex;align-items:center;justify-content:space-between;gap:12px}.summary-list{display:grid;grid-template-columns:130px 1fr;gap:12px;font-size:14px}.summary-list dt{color:var(--muted)}.summary-list dd{margin:0}.blank{margin:0;color:var(--muted);padding:18px 0}.text-button{background:none;border:0;padding:6px;color:var(--teal);text-decoration:underline;font-weight:500}.nowrap{white-space:nowrap}.hidden,[hidden]{display:none!important}dialog{border:1px solid var(--line);border-radius:12px;padding:0;width:min(720px,calc(100vw - 32px));max-height:calc(100vh - 48px);color:var(--ink)}dialog::backdrop{background:#142b3c66}.dialog-head{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 24px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:3}.dialog-head h2{margin:0;font-size:21px}.dialog-body{padding:24px}.dialog-body .group-list{grid-template-columns:1fr}.dialog-body .group-card{padding:16px}.dialog-body .field:last-child{margin:0}.dialog-error:empty{display:none}#notifications{position:fixed;right:24px;bottom:24px;max-width:min(440px,calc(100vw - 48px));display:grid;gap:8px;z-index:100}.toast{padding:14px 20px;color:#fff;background:var(--ink);border-radius:8px;box-shadow:0 4px 20px #102b3b22}.toast.error{background:var(--danger)}.skip{position:fixed;top:-80px;left:16px;background:#fff;padding:12px;z-index:1000}.skip:focus{top:10px}
@media(max-width:760px){.header-inner{padding:12px 20px;min-height:70px;gap:10px}.brand{font-size:20px}.brand-en{font-size:11px}.header-nav{gap:10px;font-size:13px}.nav-link{display:none}.demo-banner{font-size:12px;padding:9px 16px}main{padding:30px 20px 50px}h1{font-size:28px}.page-head{align-items:flex-start;gap:20px;flex-direction:column;margin-bottom:28px}.page-head>.primary{width:100%;font-size:16px;padding:12px 20px}.activity-row{grid-template-columns:1fr 90px 20px;gap:7px 12px;padding:20px 0}.activity-row h2{font-size:18px}.activity-row>.activity-description{grid-column:1/3;grid-row:2;font-size:13px}.activity-row>.icon{grid-column:3;grid-row:1/3}.activity-row>.status{grid-column:2;grid-row:1;font-size:12px}.activity-row .muted{font-size:12px}.form-grid,.split,.group-list{grid-template-columns:1fr;gap:16px}.form-grid .field{margin-bottom:0}.section{padding-top:24px}.activity-heading{flex-direction:column;gap:4px}.activity-heading>.actions{width:100%}.activity-heading h1{font-size:27px}.stats-line{gap:10px 20px;font-size:13px}.stats-line strong{font-size:18px}.group-card{padding:18px}.steps{gap:14px;font-size:12px}.step-number{width:23px;height:23px}.sticky-action{align-items:flex-start;flex-direction:column}.sticky-action>.actions{margin:0;width:100%}.sticky-action>.actions>.primary{flex:1}.summary-list{grid-template-columns:100px 1fr}.dialog-head{padding:16px 18px}.dialog-body{padding:20px}.section-heading{align-items:flex-start}.section-heading button{font-size:14px;padding:8px 12px}.account-row{gap:12px}.account-row button{padding:8px 12px;font-size:14px}.pool-kind button{font-size:14px;padding:12px}.list-row{flex-wrap:wrap}.toolbar{gap:8px}.toolbar button{font-size:13px;padding:10px 12px}summary .muted{display:block;margin-left:18px}.tip{font-size:13px}.login h1{font-size:29px}.login{padding:8px 0}.user-menu>summary{max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}footer{font-size:12px}}
@media print{header,.demo-banner,.actions,button,footer,#notifications,.back,summary{display:none!important}main{max-width:none;padding:0}.group-list{display:block}.group-card{break-inside:avoid;margin-bottom:12px}}

.login-help{margin-top:20px}fieldset{border:1px solid var(--line);border-radius:6px;margin:20px 0;padding:12px 16px}legend{font-size:15px;font-weight:650;padding:0 6px}
.admin-page [hidden]{display:none!important}.admin-role{display:inline-flex;align-items:center;gap:8px;flex-shrink:0;color:var(--teal-dark);font-size:14px;font-weight:650}.admin-tabs{display:flex;gap:8px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:20px}.admin-tabs button{border-color:transparent;background:transparent}.admin-tabs button[aria-selected=true]{background:#edf6f5;border-color:#b9d9d6;color:var(--teal-dark)}.admin-panel-heading,.admin-card-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.admin-panel-heading{margin-bottom:20px;align-items:flex-start}.admin-panel-heading h2{margin-bottom:6px}.admin-panel-heading p{margin-bottom:0}.admin-panel-heading>button{flex-shrink:0;font-size:14px}.admin-people-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px}.admin-person-card{padding:24px;border:1px solid var(--line);border-radius:var(--radius);min-width:0}.admin-card-heading{margin-bottom:14px}.admin-card-heading h3,.admin-card-heading h2{margin:0}.admin-count,.admin-pending-label{font-size:12px;white-space:nowrap;color:var(--muted);font-weight:600}.admin-person-card>p{min-height:48px}.admin-person-card textarea{font-size:14px;line-height:1.7;resize:vertical;overflow-wrap:anywhere}.admin-person-card .field{margin-bottom:12px}.admin-person-card .help-text{min-height:46px}.admin-person-card form>button{width:100%;margin-top:4px}.admin-confirm-panel{margin-top:28px;padding:24px;border:2px solid #8fbfba;border-radius:var(--radius);background:#f8fbfa;scroll-margin-top:24px}.admin-confirm-panel h2{font-size:21px}.admin-pending-label{color:var(--teal-dark)}.admin-diff-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;margin:24px 0}.admin-diff-grid section{min-width:0}.admin-diff-grid h3{font-size:16px;margin-bottom:12px}.admin-diff-grid th,.admin-diff-grid td{font-size:13px;padding:10px 8px;white-space:normal;overflow-wrap:anywhere}.admin-email{overflow-wrap:anywhere;word-break:break-word;min-width:0}.admin-diff-grid table{min-width:0;width:100%;table-layout:fixed}.admin-diff-grid th:first-child{width:32%}.admin-confirm-panel .alert{margin-bottom:20px}.admin-access-audit>li:first-child{border-top:0;padding-top:4px}.admin-access-audit .audit-heading time{font-size:13px;color:var(--muted)}.admin-access-audit .audit-byline{overflow-wrap:anywhere}.admin-audit-reason{margin:12px 0;font-size:14px;white-space:pre-wrap;overflow-wrap:anywhere}.admin-audit-changes{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}.admin-audit-changes h3{font-size:14px}.admin-audit-changes ul{margin:4px 0 0;padding-left:20px;font-size:13px;overflow-wrap:anywhere}.admin-audit-changes p{margin:4px 0 0}.admin-page [role=tabpanel]{scroll-margin-top:24px}
@media(max-width:760px){.admin-page .page-head{flex-direction:row;gap:12px}.admin-role{font-size:12px;margin-top:4px}.admin-page .page-head h1{font-size:26px}.admin-tabs{gap:6px;display:grid;grid-template-columns:1fr 1fr}.admin-tabs button{font-size:14px;padding:10px 8px}.admin-panel-heading{gap:14px;flex-direction:column}.admin-people-grid,.admin-diff-grid,.admin-audit-changes{grid-template-columns:minmax(0,1fr);gap:16px}.admin-person-card,.admin-confirm-panel{padding:18px}.admin-person-card>p,.admin-person-card .help-text{min-height:0}.admin-confirm-panel .admin-card-heading{align-items:flex-start}.admin-confirm-panel h2{font-size:19px}.admin-confirm-panel .actions{align-items:stretch}.admin-confirm-panel .actions>button{flex:1}.admin-diff-grid{margin:20px 0}.admin-person-card textarea{font-size:16px}}
.group-list.group-directory{grid-template-columns:1fr;gap:10px}.group-card.group-disclosure{padding:0;overflow:hidden}.group-disclosure>.group-summary{display:grid;grid-template-columns:minmax(0,1fr) auto 20px;gap:16px;align-items:center;list-style:none;padding:18px 20px}.group-summary::-webkit-details-marker{display:none}.group-summary::marker{content:''}.group-summary:hover{background:#f5f9f9}.group-overview{display:flex;flex-direction:column;min-width:0;gap:5px}.group-title{display:flex;align-items:baseline;gap:8px 12px;flex-wrap:wrap}.group-code{display:inline-block;flex-shrink:0;color:var(--teal-dark);font-size:14px;font-variant-numeric:tabular-nums}.group-name{font-size:18px;overflow-wrap:anywhere}.group-leader{font-size:14px;color:var(--muted);font-weight:400;overflow-wrap:anywhere}.group-summary .capacity{text-align:right;display:flex;flex-direction:column;align-items:flex-end;gap:0;font-variant-numeric:tabular-nums}.group-full{font-size:12px;color:var(--muted);font-weight:400}.group-chevron{display:flex;color:var(--muted)}.group-disclosure[open]>.group-summary{border-bottom:1px solid var(--line)}.group-disclosure[open]>.group-summary .group-chevron{transform:rotate(90deg)}.group-content{padding:16px 20px 20px}.group-content>.members{margin:0}.group-content>.group-topic{margin-bottom:12px}.group-content>.help-text{margin:14px 0 0}.group-content .actions:empty{display:none}.my-state .group-disclosure{max-width:none}.group-filters{align-items:flex-end}.group-filters>.field:first-child{flex:2}.group-disclosure>.group-summary:focus-visible{outline-offset:-4px}
@media(max-width:760px){.group-disclosure>.group-summary{padding:15px 14px;gap:10px;grid-template-columns:minmax(0,1fr) auto 18px}.group-summary .capacity{font-size:14px}.group-name{font-size:16px}.group-leader{font-size:13px}.group-title{gap:2px 10px}.group-content{padding:14px}.group-chevron .icon{width:18px;height:18px}}
.group-disclosure.invited{border-color:var(--teal);box-shadow:0 0 0 2px #087f7815;scroll-margin-top:24px}.invitation-label{color:var(--teal-dark);font-size:13px;font-weight:650;margin:0 0 14px}.invitation-banner .text-button{padding:6px 0;min-height:36px}.invitation-banner p{margin:6px 0 0}

.audit-list{list-style:none;padding:0;margin:0}.audit-list>li{padding:18px 0;border-top:1px solid var(--line)}.audit-heading,.audit-byline{display:flex;justify-content:space-between;align-items:baseline;gap:8px 20px;flex-wrap:wrap}.audit-byline{font-size:13px;color:var(--muted);margin:5px 0 0}.audit-email{font-size:12px;color:var(--muted);margin:2px 0 0;overflow-wrap:anywhere}.audit-details{font-size:14px;margin:12px 0 0;padding-left:22px;overflow-wrap:anywhere}.audit-details li+li{margin-top:5px}
.audit-evidence{margin-top:8px}.audit-evidence>summary{font-size:13px;min-height:36px;padding:6px 0}.audit-evidence>.audit-details{margin-top:4px}
.header-inner{flex-wrap:wrap}.header-nav{margin-left:auto}.student-guide-link{margin-left:auto;white-space:nowrap;font-size:14px;padding:8px 12px;color:var(--teal-dark)}.header-nav+.student-guide-link{margin-left:0}.guide-format{font-size:11px;font-weight:500;color:var(--muted)}@media(max-width:760px){.student-guide-link,.header-nav+.student-guide-link{width:100%;margin-left:0;min-height:44px}}