:root{--navy:#193b58;--teal:#117c89;--white:#fff;--mist:#f2f6f9;--orange:#b85a22;--line:#dce6ec;--text:#20394b;--muted:#62798a;--shadow:0 12px 36px rgba(25,59,88,.07)}*{box-sizing:border-box}html{font-family:-apple-system,BlinkMacSystemFont,"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",sans-serif;color:var(--text);background:var(--mist)}body{margin:0}a{color:var(--teal);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit}button{cursor:pointer}.app-shell{display:flex;min-height:100vh}.sidebar{width:236px;flex:none;background:var(--navy);color:#fff;display:flex;flex-direction:column;padding:28px 18px;position:sticky;top:0;height:100vh}.brand{color:#fff;display:flex;gap:12px;align-items:center;padding:0 10px 30px}.brand:hover{text-decoration:none}.brand-mark{background:var(--teal);border-radius:11px;padding:9px 13px;font-weight:800;font-size:21px}.brand strong{display:block;font-size:21px;letter-spacing:.07em}.brand small,.identity small{display:block;color:#b8d4df;font-size:11px;margin-top:3px}.navigation{display:flex;flex-direction:column;gap:4px}.navigation a{color:#d8e8ee;padding:12px 13px;border-radius:9px;font-size:14px}.navigation a:hover,.navigation a:focus{background:#29516d;color:#fff;text-decoration:none}.nav-heading{color:#83a9bb;font-size:11px;letter-spacing:.15em;text-transform:uppercase;padding:22px 13px 7px}.sidebar-foot{margin-top:auto;padding:20px 13px 0;border-top:1px solid #416178;display:flex;flex-direction:column;gap:9px;font-size:13px}.sidebar-foot a,.link-button{color:#cee1e8}.link-button{background:none;border:0;padding:0}.identity{padding-bottom:8px}.work-area{flex:1;min-width:0}.topbar{height:70px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 36px;justify-content:space-between;color:var(--muted);font-size:13px}.topbar-user{color:var(--navy);font-weight:700}.mobile-brand,.mobile-nav{display:none}.main-content{max-width:1440px;margin:auto;padding:36px}.page-head{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:0 0 25px}.eyebrow{display:block;color:var(--teal);font-size:11px;letter-spacing:.16em;font-weight:800;margin-bottom:8px}.page-head h1,h1{color:var(--navy);font-size:30px;line-height:1.22;margin:0 0 7px}.muted{color:var(--muted)}p.muted{margin:0}.week-controls{display:flex;gap:9px;margin:0 0 20px}.button{display:inline-flex;align-items:center;justify-content:center;padding:10px 15px;border-radius:8px;border:1px solid var(--line);font-weight:700;font-size:13px;white-space:nowrap;text-decoration:none;background:#fff;color:var(--navy)}.button:hover{text-decoration:none;filter:brightness(.97)}.button.primary{background:var(--teal);color:#fff;border-color:var(--teal)}.button.ghost{background:#fff}.week-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:10px}.day-column{background:#fff;border:1px solid var(--line);border-radius:12px;min-height:275px;overflow:hidden}.day-column.is-today{border-color:var(--teal);box-shadow:0 0 0 1px var(--teal)}.day-heading{border-bottom:1px solid var(--line);padding:14px 13px;display:flex;align-items:baseline;gap:7px;color:var(--muted);font-size:12px}.day-heading strong{color:var(--navy);font-size:17px}.day-heading em{font-style:normal;color:var(--teal);font-size:11px;margin-left:auto}.day-body{padding:9px}.lesson-card{display:flex;flex-direction:column;gap:7px;border-left:3px solid var(--teal);border-radius:7px;background:#f5f9fa;padding:11px 10px;margin-bottom:8px;font-size:11px;color:var(--muted)}.lesson-card:hover{text-decoration:none;background:#eaf4f5}.lesson-card strong{font-size:14px;color:var(--navy);line-height:1.35}.lesson-time{font-weight:800;color:var(--teal);font-size:12px}.day-empty{font-size:12px;color:#8ba0ae;text-align:center;padding:32px 4px}.status{display:inline-flex;align-items:center;padding:5px 9px;border-radius:99px;background:#e9f5f5;color:#106773;font-size:11px;font-weight:800;align-self:flex-start}.status-cancelled{background:#fff0e7;color:var(--orange)}.status-completed{background:#edf1f4;color:#516c7b}.panel{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:23px;margin-bottom:18px}.panel h2{font-size:17px;color:var(--navy);margin:0 0 18px}.detail-grid{display:grid;grid-template-columns:minmax(280px,1fr) minmax(370px,1.5fr);gap:18px}.facts{margin:0}.facts>div{display:flex;padding:12px 0;border-bottom:1px solid var(--line);gap:16px}.facts dt{width:100px;flex:none;color:var(--muted)}.facts dd{margin:0;font-weight:700}.inline-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12px}.panel>.inline-actions{margin-top:18px}.roster-row{display:flex;justify-content:space-between;gap:15px;padding:15px 0;border-bottom:1px solid var(--line)}.roster-row:last-child{border:0}.small{font-size:12px;margin-top:4px}.small-button{padding:5px 9px;font-size:11px}.back-link{display:inline-block;margin-bottom:20px;font-size:13px}.narrow{max-width:660px}.stack-form{display:flex;flex-direction:column;gap:19px}.field{display:flex;flex-direction:column;gap:6px}.field label,.month-filter label{font-size:13px;font-weight:800;color:var(--navy)}.field input,.field select,.field textarea,.month-filter input{border:1px solid #bfced7;border-radius:7px;padding:10px 12px;background:#fff;color:var(--text);width:100%;outline:none}.field input:focus,.field select:focus,.field textarea:focus,.month-filter input:focus{border-color:var(--teal);box-shadow:0 0 0 3px #117c8920}.field small{color:var(--muted);font-size:12px}.errorlist,.form-errors{color:#a33d22;background:#fff1eb;border-radius:6px;margin:3px 0 0;padding:8px 12px;list-style:none;font-size:12px}.form-actions{padding-top:3px}.login-wrap{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 160px)}.login-card{width:min(440px,100%);background:#fff;border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);padding:36px}.login-card .stack-form{margin-top:26px}.login-card button{width:100%}.flash,.banner{border-radius:8px;padding:12px 16px;margin-bottom:18px;background:#e6f2f4;color:#0f6572;font-size:13px}.flash-error{background:#fff0e7;color:#9c471e}.list-stack{display:flex;flex-direction:column;gap:12px}.list-item{display:flex;justify-content:space-between;gap:16px;margin:0}.list-item h2{margin:5px 0 8px}.list-item p{margin:0 0 10px;font-size:14px;line-height:1.6}.item-meta,.read-mark{color:var(--muted);font-size:12px}.unread{border-left:4px solid var(--teal)}.empty-state{color:var(--muted);font-size:13px;padding:20px}.month-filter{display:flex;align-items:end;gap:10px;margin-bottom:20px}.month-filter input{width:170px}.summary-grid{display:flex;gap:14px;margin-bottom:20px}.summary-card{background:#fff;border:1px solid var(--line);border-radius:11px;padding:19px 22px;min-width:170px;box-shadow:var(--shadow)}.summary-card span{display:block;color:var(--muted);font-size:12px}.summary-card strong{display:block;color:var(--navy);font-size:24px;margin-top:7px}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:13px}th{text-align:left;color:var(--muted);font-weight:700;background:#f7fafb}th,td{padding:11px;border-bottom:1px solid var(--line)}.empty-cell{text-align:center;color:var(--muted);padding:22px}.payload-preview{white-space:pre-wrap;word-break:break-word;max-height:55vh;overflow:auto;background:#f4f7f9;border-radius:8px;padding:16px;font-size:12px}.account-list>div{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);font-size:12px}.account-list span{color:var(--muted)}
@media(max-width:1200px){.week-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media(max-width:850px){.sidebar{display:none}.topbar{height:55px;padding:0 18px}.mobile-brand{display:block;color:var(--navy);font-weight:800;font-size:18px}.topbar-label{display:none}.mobile-nav{display:flex;overflow-x:auto;gap:4px;background:#fff;border-bottom:1px solid var(--line);padding:8px 12px}.mobile-nav a{flex:none;padding:8px 13px;border-radius:7px;background:var(--mist);font-size:12px;font-weight:700}.main-content{padding:22px 16px}.week-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.detail-grid{grid-template-columns:1fr}.page-head h1{font-size:25px}}@media(max-width:560px){.week-grid{grid-template-columns:1fr}.day-column{min-height:0}.day-body{padding:7px 11px}.day-empty{padding:8px}.page-head{align-items:flex-start}.page-head .button{font-size:11px;padding:8px}.week-controls{justify-content:space-between}.week-controls .button{font-size:11px;padding:8px}.roster-row{flex-direction:column}.list-item{flex-direction:column}.summary-grid{flex-wrap:wrap}.summary-card{flex:1;min-width:130px}.login-card{padding:26px}.login-wrap{min-height:calc(100vh - 130px)}}
.week-picker{display:flex;align-items:center;gap:8px;margin-left:auto;font-size:12px}.week-picker input{border:1px solid var(--line);border-radius:7px;padding:7px;background:#fff;color:var(--text)}.personal-state{color:var(--navy);font-size:11px}.read-details{margin-top:12px;color:var(--muted);font-size:12px}.read-details summary{cursor:pointer;color:var(--teal);font-weight:700}.read-details p{font-size:12px;margin:8px 0 0}.mobile-menu{position:relative;flex:none}.mobile-menu summary{list-style:none;padding:8px 13px;border-radius:7px;background:var(--mist);font-size:12px;font-weight:700;color:var(--teal);cursor:pointer}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu>div{position:absolute;z-index:10;right:0;top:39px;min-width:170px;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:9px;box-shadow:var(--shadow);padding:8px}.mobile-menu a,.mobile-menu button{display:block;background:#fff;border:0;color:var(--navy);text-align:left;padding:9px 10px;font-size:12px;width:100%}.mobile-menu form{margin:0}.week-grid{grid-template-columns:repeat(7,minmax(0,1fr))}.day-heading{flex-wrap:wrap}.day-heading em{margin-left:0}@media(max-width:1450px){.week-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media(max-width:1150px){.week-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:850px){.week-controls{flex-wrap:wrap}.week-picker{width:100%;margin-left:0}.mobile-nav{overflow:visible}}@media(max-width:560px){.week-grid{grid-template-columns:1fr}.week-picker label{white-space:nowrap}.week-picker input{min-width:0}}

.detail-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.detail-grid>.panel{min-width:0;overflow-x:auto}.panel{min-width:0}.week-controls{flex-wrap:wrap}@media(max-width:1100px){.detail-grid{grid-template-columns:1fr}}
.lesson-title{color:var(--navy)}.lesson-title:hover{text-decoration:underline}.card-labels,.card-actions,.update-actions{display:flex;align-items:center;flex-wrap:wrap;gap:7px}.card-actions{margin-top:4px}.card-actions form,.card-roster-row form{margin:0}.card-actions .button:disabled{cursor:not-allowed;background:#e7eef1;color:#637985;filter:none}.action-hint{font-size:10px;line-height:1.35}.card-roster{border-top:1px solid var(--line);padding-top:8px;margin-top:4px}.roster-caption{font-weight:700;color:var(--navy);font-size:11px}.card-roster-row{display:flex;flex-wrap:wrap;align-items:center;gap:6px;padding:5px 0;border-bottom:1px solid var(--line);font-size:11px}.card-roster-row span:first-child{font-weight:700;color:var(--navy)}.card-roster-row span:nth-child(2){margin-left:auto}.demo-badge{background:#fff0d8;color:#79500d}.demo-banner{background:#fff4df;color:#785017}.update-description{margin:16px 0;padding:14px;border-left:3px solid var(--teal);background:var(--mist);white-space:pre-wrap}.update-actions{align-self:flex-start}
.leave-filters{display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px;margin-bottom:16px}.leave-filters .field{flex:1;min-width:180px}.filter-actions{display:flex;gap:8px}@media(max-width:580px){.leave-filters .field{min-width:0;flex-basis:100%}}