:root{--ink:#102f61;--muted:#617a9f;--line:#dce8f7;--surface:#ffffffeb;--blue:#2076f3;--blue-dark:#1258c5;--blue-soft:#eaf3ff;--green:#168b62;--green-soft:#e4f7ef;--red:#cc3d4c;--red-soft:#ffeaec;--amber:#ad6c00;--amber-soft:#fff3d9;--shadow:0 18px 50px #1e5ca121}*{box-sizing:border-box}html{background:#f4f9ff;min-width:320px}body{color:var(--ink);background:radial-gradient(circle at 5% 15%,#66cac22e,#0000 28rem),radial-gradient(circle at 95% 0,#3e84f529,#0000 32rem),linear-gradient(#f7fbff 0%,#eef7ff 100%);min-height:100vh;margin:0;font-family:Arial,Microsoft YaHei,sans-serif}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}.brand-mark{flex:none;display:block}.primary-button{color:#fff;background:linear-gradient(135deg, #43a0ff, var(--blue));cursor:pointer;border:0;border-radius:14px;min-height:48px;font-weight:700;transition:transform .12s,opacity .12s;box-shadow:0 10px 24px #2076f33d}.primary-button:hover:not(:disabled){transform:translateY(-1px)}.primary-button:disabled{cursor:not-allowed;opacity:.48;box-shadow:none}.text-button{border:1px solid var(--line);color:var(--blue-dark);cursor:pointer;background:#fff;border-radius:10px;min-height:44px;padding:0 14px}.link-button{white-space:nowrap;place-items:center;display:inline-grid}.manage-link{color:var(--blue-dark);text-underline-offset:3px;font-weight:800;-webkit-text-decoration:underline #b9d6fb;text-decoration:underline #b9d6fb}.login-page{place-items:center;min-height:100vh;padding:28px 18px;display:grid;position:relative;overflow:hidden}.login-page:after{content:"";background:radial-gradient(circle,#40a2dd33,#0000 70%);border-radius:50%;width:22rem;height:22rem;position:absolute;inset:auto -8rem -8rem auto}.login-message,.login-roles{display:none}.login-card{background:var(--surface);width:min(100%,430px);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);text-align:center;z-index:1;border:1px solid #fffffff2;border-radius:28px;padding:34px 24px 26px;position:relative}.login-card>.brand-mark{margin:0 auto 14px}.login-card h2{margin:0;font-size:28px}.login-card>p{color:var(--muted);margin:8px 0 26px}.login-form{text-align:left;gap:16px;display:grid}.login-form label,.note-field{gap:7px;display:grid}.login-form label span,.note-field span{font-size:14px;font-weight:700}.login-form input,.note-field input{width:100%;min-height:48px;color:var(--ink);background:#fffffff5;border:1px solid #cbdcf1;border-radius:12px;outline:none;padding:0 14px}.login-form input:focus,.note-field input:focus{border-color:var(--blue);box-shadow:0 0 0 3px #2076f31f}.login-form .primary-button{margin-top:2px}.form-error{color:var(--red);margin:0;font-size:14px;font-weight:700}.login-help{text-align:center;color:var(--muted);margin:0;font-size:13px}.app-shell{isolation:isolate;min-height:100vh;position:relative}.app-shell:before{content:"";z-index:-1;pointer-events:none;background:radial-gradient(at 14% 100%,#52bfb121,#0000 38%),radial-gradient(at 86% 12%,#4897f41f,#0000 36%);position:fixed;inset:70px 0 0}.app-header{border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);z-index:20;background:#ffffffe6;justify-content:space-between;align-items:center;gap:14px;min-height:70px;padding:11px 16px;display:flex;position:sticky;top:0}.brand-lockup,.account-menu{align-items:center;gap:10px;display:flex}.brand-lockup>div,.account-menu>div{gap:2px;display:grid}.brand-lockup strong{font-size:15px}.brand-lockup span,.account-menu span{color:var(--muted);font-size:11px}.account-menu>div{text-align:right;display:none}.page-container{width:min(100%,1180px);margin:0 auto;padding:18px 14px 120px}.center-workspace{width:min(100%,1540px);margin:0 auto}.center-nav-shell{margin:12px 14px 0}.center-nav{border:1px solid var(--line);background:#ffffffe6;border-radius:14px;gap:5px;padding:6px;display:flex;overflow-x:auto}.center-nav a{min-height:42px;color:var(--muted);border-radius:10px;flex:none;place-items:center;padding:0 15px;font-size:13px;font-weight:700;display:grid}.center-nav a.active{color:var(--blue-dark);background:var(--blue-soft)}.center-nav-note{display:none}.page-heading{box-shadow:var(--shadow);background:linear-gradient(110deg,#fffffff5,#eaf6ffe0),radial-gradient(circle at 100%,#37afc040,#0000 20rem);border:1px solid #fff;border-radius:22px;justify-content:space-between;align-items:center;gap:20px;padding:22px;display:flex}.eyebrow{color:var(--blue);letter-spacing:.06em;margin-bottom:5px;font-size:13px;font-weight:800;display:inline-block}.page-heading h1,.section-heading h2{margin:0}.page-heading h1{font-size:clamp(25px,5vw,34px)}.page-heading p,.section-heading p{color:var(--muted);margin:7px 0 0;line-height:1.6}.heading-actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.group-count{text-align:center;min-width:78px}.group-count strong{color:var(--blue);font-size:32px;display:block}.group-count span{color:var(--muted);font-size:13px}.session-nav{border:1px solid var(--line);background:var(--surface);border-radius:18px;grid-template-columns:repeat(5,minmax(74px,1fr));gap:6px;margin:14px 0;padding:7px;display:grid;overflow-x:auto}.session-nav a{text-align:center;min-height:58px;color:var(--muted);white-space:nowrap;border-radius:12px;place-content:center;gap:3px;padding:9px 8px;display:grid}.session-nav a strong{font-size:16px}.session-nav a span{font-size:11px}.session-nav a.active{color:#fff;background:linear-gradient(135deg, #48a7ff, var(--blue));box-shadow:0 8px 18px #2076f33d}.section-heading{margin:20px 0 12px}.section-heading h2{font-size:22px}.student-list{gap:12px;display:grid}.leader-record-summary{border:1px solid var(--line);background:linear-gradient(135deg,#fffffffa,#eaf4fff0);border-radius:18px;gap:14px;margin:0 0 14px;padding:16px;display:grid;box-shadow:0 8px 24px #2f5d9212}.leader-record-summary>div{align-items:baseline;gap:6px;display:flex}.leader-record-summary>div strong{color:var(--blue);font-size:30px}.leader-record-summary>div span{color:var(--muted)}.leader-record-summary dl{grid-template-columns:repeat(2,1fr);gap:8px;margin:0;display:grid}.leader-record-summary dl div{background:#ffffffd1;border-radius:11px;padding:9px 10px}.leader-record-summary dt{color:var(--muted);font-size:12px}.leader-record-summary dd{margin:4px 0 0;font-size:18px;font-weight:800}.student-card{border:1px solid var(--line);background:var(--surface);border-radius:18px;padding:17px;transition:border-color .12s;box-shadow:0 8px 24px #2f5d9212}.student-card.dirty{border-color:#9cc9ff}.student-identity{align-items:center;gap:12px;margin-bottom:15px;display:flex}.student-index{width:40px;height:40px;color:var(--blue-dark);background:var(--blue-soft);border-radius:50%;flex:none;place-items:center;font-weight:800;display:grid}.student-identity h2{margin:0;font-size:18px;display:inline}.role-badge{color:var(--blue-dark);background:var(--blue-soft);border-radius:999px;margin-left:8px;padding:3px 8px;font-size:11px;font-weight:700}.record-controls{gap:13px;display:grid}.tri-state{border:0;min-width:0;margin:0;padding:0}.tri-state legend{margin-bottom:7px;font-size:14px;font-weight:800}.tri-state>div{border:1px solid #cbdcf1;border-radius:12px;grid-template-columns:repeat(3,1fr);min-height:44px;display:grid;overflow:hidden}.tri-state button{min-width:0;min-height:44px;color:var(--muted);cursor:pointer;background:#f8fbff;border:0;border-right:1px solid #dce8f7}.tri-state button:last-child{border-right:0}.tri-state button.selected{color:#fff;background:linear-gradient(135deg, #4aa9ff, var(--blue));font-weight:800}.save-panel{z-index:15;padding:10px 14px calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--line);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fffffff5;grid-template-columns:1fr auto;align-items:center;gap:8px 12px;display:grid;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -10px 30px #265a941f}.save-panel>div p{display:none}.save-panel>div span{color:var(--muted);font-size:12px}.save-panel .primary-button{min-width:150px;padding:0 16px}.save-success{color:var(--green);grid-column:1/-1;margin:0;font-size:13px;font-weight:800}.save-panel>.form-error{grid-column:1/-1}.stat-grid{grid-template-columns:repeat(2,1fr);gap:10px;margin:16px 0;display:grid}.stat-grid article{border:1px solid var(--line);background:var(--surface);border-radius:16px;align-content:center;gap:6px;min-height:92px;padding:15px;display:grid}.stat-grid article span{color:var(--muted);font-size:13px}.stat-grid article strong{font-size:26px}.stat-grid article.warning strong{color:var(--amber)}.metrics-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:16px 0;display:grid}.metric-card{border:1px solid var(--line);background:var(--surface);border-radius:16px;align-content:center;gap:4px;min-height:108px;padding:15px;display:grid;box-shadow:0 7px 20px #2f5d920f}.metric-card span,.metric-card small{color:var(--muted)}.metric-card span{font-size:13px;font-weight:700}.metric-card strong{font-size:28px}.metric-card small{font-size:12px}.metric-card.positive strong{color:var(--green)}.metric-card.warning strong{color:var(--amber)}.metric-card.purple strong{color:#7650ce}.center-insights{gap:14px;margin-bottom:14px;display:grid}.insight-card,.filter-panel{border:1px solid var(--line);background:var(--surface);border-radius:20px;padding:18px;box-shadow:0 9px 26px #2f5d9212}.insight-card .panel-heading,.filter-panel .panel-heading{margin-bottom:14px}.insight-card h2,.filter-panel h2{margin:0;font-size:19px}.donut-wrap{grid-template-columns:130px minmax(0,1fr);align-items:center;gap:18px;display:grid}.progress-donut{aspect-ratio:1;background:conic-gradient(var(--green) 0 var(--completion), #f0b94a var(--completion) 360deg);border-radius:50%;place-items:center;width:128px;display:grid;position:relative}.progress-donut:before{content:"";border-radius:inherit;background:#fff;position:absolute;inset:18px}.progress-donut>div{z-index:1;text-align:center;display:grid}.progress-donut strong{font-size:25px}.progress-donut span{color:var(--muted);font-size:11px}.chart-legend{gap:12px;margin:0;display:grid}.chart-legend>div{gap:3px;display:grid}.chart-legend dt{color:var(--muted);align-items:center;gap:7px;font-size:12px;display:flex}.chart-legend dd{margin:0 0 0 17px;font-weight:800}.legend-dot{border-radius:50%;width:10px;height:10px}.legend-dot.completed{background:var(--green)}.legend-dot.pending{background:#f0b94a}.info-callout{color:#37628d;background:var(--blue-soft);border-radius:12px;margin:15px 0 0;padding:11px 12px;font-size:12px;line-height:1.6}.group-progress-list{gap:8px;display:grid}.group-progress-row{border-radius:11px;grid-template-columns:minmax(105px,.9fr) minmax(85px,1.3fr) 48px;align-items:center;gap:10px;min-height:50px;padding:9px 10px;transition:background .12s;display:grid}.group-progress-row:hover{background:var(--blue-soft)}.group-progress-row>div:first-child{gap:2px;min-width:0;display:grid}.group-progress-row>div:first-child strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.group-progress-row>div:first-child span{color:var(--muted);font-size:11px}.group-progress-row>strong{text-align:right;font-size:13px}.progress-track{background:#e7eef8;border-radius:999px;height:8px;overflow:hidden}.progress-track span{border-radius:inherit;background:linear-gradient(90deg, #39bd85, var(--green));height:100%;display:block}.filter-panel{margin-bottom:14px}.center-filters{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.center-filters label{gap:5px;min-width:0;display:grid}.center-filters label span{color:var(--muted);font-size:12px;font-weight:700}.center-filters select,.center-filters input{width:100%;min-height:44px;color:var(--ink);background:#fff;border:1px solid #cbdcf1;border-radius:10px;padding:0 10px}.filter-actions{grid-column:1/-1;gap:9px;display:flex}.filter-actions .primary-button{padding:0 18px}.empty-state{color:var(--muted);text-align:center;margin:8px 0}.center-empty-state{padding:28px}.center-table{gap:10px;display:grid}.center-table-header{display:none}.center-row{border:1px solid var(--line);background:var(--surface);border-radius:16px;grid-template-columns:1fr 1fr;gap:12px 16px;padding:15px;display:grid}.center-row>span,.center-row>strong{gap:4px;font-size:14px;display:grid}.center-row>span:before,.center-row>strong:before{content:attr(data-label);color:var(--muted);font-size:11px;font-weight:400}.status-pill,.complete,.incomplete{border-radius:999px;width:fit-content;padding:4px 9px;font-size:12px;font-weight:800}.status-pill.pending,.incomplete{color:var(--amber);background:var(--amber-soft)}.status-pill.positive,.complete{color:var(--green);background:var(--green-soft)}.status-pill.negative{color:var(--red);background:var(--red-soft)}.error-page{text-align:center;place-items:center;min-height:100vh;padding:24px;display:grid}.error-page>div{max-width:440px;box-shadow:var(--shadow);background:#fff;border-radius:20px;padding:30px}.error-page .primary-button{padding:0 20px}.management-sections{gap:18px;margin-top:18px;display:grid}.management-panel{border:1px solid var(--line);background:var(--surface);border-radius:20px;padding:18px;box-shadow:0 10px 28px #2f5d9212}.panel-heading{justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px;display:flex}.panel-heading h2{margin:0}.panel-heading>span,.security-hint{color:var(--muted);font-size:13px}.management-form{background:var(--blue-soft);border-radius:16px;gap:12px;padding:14px;display:grid}.management-form label{gap:6px;display:grid}.management-form label>span{font-size:13px;font-weight:800}.management-form input,.management-form select,.management-form textarea{width:100%;min-height:44px;color:var(--ink);background:#fff;border:1px solid #cbdcf1;border-radius:10px;padding:0 12px}.management-form textarea{resize:vertical;min-height:88px;padding-top:10px;padding-bottom:10px}.management-form .checkbox-field{align-items:center;gap:8px;display:flex}.management-form .checkbox-field input{width:18px;min-height:18px}.management-form .primary-button{padding:0 18px}.management-result{border-radius:12px;margin-top:12px;padding:12px;font-size:13px}.management-result.success{color:var(--green);background:var(--green-soft)}.management-result.error{color:var(--red);background:var(--red-soft)}.management-result p{overflow-wrap:anywhere;margin:7px 0 0}.management-result code{-webkit-user-select:all;user-select:all}.management-list{gap:8px;margin-top:14px;display:grid}.management-filters{grid-template-columns:minmax(0,1fr) minmax(120px,.45fr);gap:8px;margin-top:14px;display:grid}.management-filters input,.management-filters select,.inline-select-form select,.session-edit-form input{min-width:0;min-height:40px;color:var(--ink);background:#fff;border:1px solid #cbdcf1;border-radius:9px;padding:0 10px}.group-management-row{grid-template-columns:minmax(0,1fr) auto auto;display:grid}.group-management-row>.management-result{grid-column:1/-1;margin-top:0}.inline-select-form{flex-wrap:wrap;gap:7px;display:flex}.inline-select-form select{max-width:240px}.system-status-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.system-status-grid article{background:var(--blue-soft);border-radius:13px;gap:5px;padding:14px;display:grid}.system-status-grid span{color:var(--muted);font-size:12px}.session-management-row{display:block}.session-edit-form{grid-template-columns:auto 1fr;align-items:center;gap:8px;width:100%;display:grid}.session-edit-form>input:nth-of-type(3){grid-column:1/-1}.session-edit-form .checkbox-field{align-items:center;gap:5px;display:flex}.session-edit-form .checkbox-field input{width:18px;min-height:18px}.audit-heading{margin-top:24px}.audit-list{gap:7px;display:grid}.audit-list article{border-bottom:1px solid var(--line);justify-content:space-between;gap:14px;padding:10px 0;display:flex}.audit-list article>div{gap:3px;min-width:0;display:grid}.audit-list span,.audit-list time{color:var(--muted);font-size:11px}.audit-list time{flex:none}.management-row{border:1px solid var(--line);background:#fff;border-radius:12px;justify-content:space-between;align-items:center;gap:12px;padding:12px;display:flex}.management-row>div:first-child{gap:3px;min-width:0;display:grid}.management-row>div:first-child span{color:var(--muted);overflow-wrap:anywhere;font-size:12px}.student-management-row,.account-row{grid-template-columns:minmax(0,1fr) auto auto;display:grid}.account-row{grid-template-columns:minmax(0,1fr) auto auto}.row-actions{flex-wrap:wrap;grid-column:1/-1;gap:8px;display:flex}.account-row>.management-result{grid-column:1/-1;margin-top:0}.student-management-row>.management-result,.edit-student-form{grid-column:1/-1}.edit-student-form{width:100%;margin-top:2px}.edit-student-form .group-change-confirm{color:var(--amber);background:var(--amber-soft);border-radius:10px;padding:10px}.edit-security-hint{color:var(--muted);margin:0;font-size:12px}.edit-form-actions{align-items:center;gap:10px;display:flex}@media (min-width:720px){.management-form{grid-template-columns:repeat(2,minmax(0,1fr));align-items:end}.management-form .wide-field{grid-column:1/-1}.management-form .primary-button{width:fit-content;min-width:140px}.compact-form{grid-template-columns:1fr 1fr auto}.student-management-row{grid-template-columns:minmax(0,1fr) auto auto}.student-management-row .row-actions{grid-column:auto}.edit-student-form .group-change-confirm,.edit-student-form .edit-form-actions{grid-column:1/-1}.account-row{grid-template-columns:minmax(0,1fr) auto auto auto}.account-row .row-actions{grid-column:auto}.management-filters.three-columns{grid-template-columns:minmax(0,1fr) minmax(150px,.5fr) minmax(120px,.35fr)}.session-edit-form{grid-template-columns:72px 150px minmax(180px,1fr) auto auto}.session-edit-form>input:nth-of-type(3){grid-column:auto}.account-menu>div{display:grid}.page-container{padding:28px 22px 140px}.section-heading{justify-content:space-between;align-items:end;gap:20px;display:flex}.record-controls{grid-template-columns:1fr 1fr minmax(180px,.8fr);align-items:end}.stat-grid{grid-template-columns:repeat(5,1fr)}.metrics-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.leader-record-summary{grid-template-columns:auto 1fr;align-items:center}.leader-record-summary dl{grid-template-columns:repeat(4,1fr)}.center-filters{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (min-width:900px){.login-page{grid-template-columns:minmax(300px,.8fr) minmax(390px,430px) minmax(230px,.55fr);gap:clamp(28px,4vw,60px);padding:50px 5vw}.login-message{justify-self:end;max-width:460px;display:block}.login-message .brand-mark{margin-bottom:18px}.login-message p{color:var(--muted);font-weight:700}.login-message h1{letter-spacing:.08em;margin:18px 0;font-family:Georgia,STKaiti,serif;font-size:clamp(44px,5vw,68px);font-weight:500;line-height:1.3}.login-message span{color:var(--muted);font-size:17px}.login-roles{gap:12px;max-width:310px;display:grid}.login-roles>p{margin:0 0 3px;font-weight:800}.login-roles>div{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffffa1;border:1px solid #ffffffe6;border-radius:16px;gap:5px;padding:18px;display:grid;box-shadow:0 9px 26px #2f5d9214}.login-roles>div span,.login-roles small{color:var(--muted)}.login-roles small{text-align:center;margin-top:10px}.student-card{grid-template-columns:minmax(210px,.6fr) 2fr;align-items:center;gap:20px;display:grid}.student-identity{margin-bottom:0}.center-container{width:min(100%,1320px)}.center-table{border:1px solid var(--line);background:#fff;border-radius:18px;gap:0;overflow:hidden}.center-table-header,.center-row{grid-template-columns:1.1fr 1fr 1.35fr .72fr .72fr .86fr .9fr;align-items:center;gap:12px;display:grid}.center-table-header{color:#fff;background:#285d99;padding:14px 18px;font-size:13px;font-weight:800}.center-row{border:0;border-bottom:1px solid var(--line);box-shadow:none;border-radius:0;padding:14px 18px}.center-row:last-child{border-bottom:0}.center-row>span,.center-row>strong{display:block}.center-row>span:before,.center-row>strong:before{display:none}.center-insights{grid-template-columns:minmax(320px,.8fr) minmax(430px,1.2fr)}.center-filters{grid-template-columns:repeat(6,minmax(0,1fr))}.center-filters .search-field{grid-column:span 2}.filter-actions{grid-column:auto;align-self:end}}@media (min-width:1100px){.app-header{padding-left:max(28px,50vw - 660px);padding-right:max(28px,50vw - 660px)}.save-panel{border:1px solid var(--line);border-radius:18px;width:min(100% - 44px,1136px);padding:12px 16px;bottom:18px;left:50%;right:auto;transform:translate(-50%)}.save-panel>div p{margin:0 0 3px;font-size:13px;font-weight:700;display:block}.center-workspace{grid-template-columns:190px minmax(0,1fr);align-items:start;gap:18px;padding:22px;display:grid}.center-workspace>.page-container{width:100%;padding:0 0 140px}.center-nav-shell{border:1px solid var(--line);background:#ffffffdb;border-radius:20px;flex-direction:column;min-height:calc(100vh - 114px);margin:0;padding:12px;display:flex;box-shadow:0 10px 28px #2f5d9212}.center-nav{background:0 0;border:0;gap:6px;padding:0;display:grid;overflow:visible}.center-nav a{justify-content:start}.center-nav-note{text-align:center;background:linear-gradient(145deg,#f5fbff,#e7f4ff);border-radius:14px;gap:6px;margin-top:auto;padding:14px;display:grid}.center-nav-note span{color:var(--muted);font-size:11px;line-height:1.6}}
