:root{font-family:"Segoe UI","Microsoft YaHei",sans-serif;color:#1d2923;background:#f7f8f5;letter-spacing:0;line-height:1.5}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input,textarea{font:inherit;letter-spacing:0;transition:background .15s,box-shadow .15s,border-color .15s,transform .12s}button{cursor:pointer}button:active{transform:scale(.985)}.auth-page{min-height:100vh;display:grid;grid-template-columns:minmax(360px,1.15fr) minmax(380px,.85fr);background:#f7f8f5}.auth-brand{position:relative;overflow:hidden;padding:clamp(40px,7vw,96px);background:#17352b;color:white;display:flex;flex-direction:column;gap:20px;justify-content:center}.brand-mark{width:52px;height:52px;display:grid;place-items:center;background:#e9b949;color:#17352b;font:700 26px Georgia,serif;border-radius:6px}.brand-mark.small{width:32px;height:32px;font-size:18px}.auth-brand h1{font-size:42px;margin:0 0 8px}.auth-brand p{margin:0;color:#d3dfd8;font-size:17px}.study-visual{position:relative;width:min(520px,85%);height:260px;margin-top:42px;background:#e8ece8;border-radius:6px;box-shadow:0 24px 60px #0d211a80;transform:rotate(-2deg)}.visual-sheet{position:absolute;inset:24px;background:#fff;border-radius:3px}.visual-line{position:absolute;left:60px;height:8px;background:#b8c9c0}.line-a{top:70px;width:42%}.line-b{top:105px;width:65%}.line-c{top:140px;width:52%}.visual-accent{position:absolute;width:95px;height:68px;right:54px;bottom:42px;background:#e9b949;border-radius:4px}.auth-form-wrap{display:grid;place-items:center;padding:36px}.auth-form{width:min(420px,100%);display:flex;flex-direction:column;gap:18px}.form-heading{margin-bottom:12px}.form-heading h2{font-size:30px;margin:0}.form-heading p{color:#66736d;margin:6px 0 0}label{display:flex;flex-direction:column;gap:7px;font-size:14px;font-weight:600}input,textarea{width:100%;border:1px solid #ccd3ce;border-radius:5px;background:white;padding:11px 12px;color:#1d2923;outline:none}input:focus,textarea:focus{border-color:#23815c;box-shadow:0 0 0 3px #23815c18;outline:none}.primary,.secondary,.quiet,.link-button,.nav-item,.icon-button,.course-card,.tabs button{border:0}.primary{background:#18794e;color:white;border-radius:5px;padding:10px 16px;font-weight:650}.primary:hover{background:#12623e}.primary:disabled{opacity:.55}.wide{width:100%;min-height:44px}.secondary{background:#edf1ee;color:#273d33;border:1px solid #d4dbd6;border-radius:5px;padding:9px 14px;font-weight:600}.link-button{background:transparent;color:#18794e;padding:5px}.segmented{display:grid;grid-template-columns:1fr 1fr;background:#e9eeeb;padding:3px;border-radius:5px}.segmented button{border:0;padding:8px;background:transparent;border-radius:4px}.segmented button.active{background:white;box-shadow:0 1px 3px #18281f20}.error-banner{padding:10px 12px;border-left:3px solid #c2413b;background:#fff0ef;color:#8f2925;margin:0;font-weight:500}.app-shell{min-height:100vh;display:grid;grid-template-columns:220px 1fr}.sidebar{position:sticky;top:0;height:100vh;background:#18362c;color:#e8f0eb;padding:18px 12px;display:flex;flex-direction:column}.sidebar-brand{display:flex;align-items:center;gap:10px;padding:0 8px 24px;font-size:19px}.sidebar nav{display:flex;flex-direction:column;gap:4px}.nav-item{background:transparent;color:#cddbd4;padding:10px 12px;border-radius:5px;text-align:left;display:flex;gap:11px;align-items:center}.nav-item span{width:24px;height:24px;display:grid;place-items:center;border:1px solid #517064;border-radius:4px;font-size:12px}.nav-item:hover,.nav-item.active{background:#285044;color:white}.sidebar-footer{margin-top:auto;border-top:1px solid #315347;padding:16px 8px 0;display:flex;justify-content:space-between;align-items:center}.role-label{font-size:12px;color:#c7d5ce}.quiet{background:transparent;color:#dbe5df}.workspace{min-width:0}.topbar{height:92px;background:white;border-bottom:1px solid #e3e7e4;padding:18px 32px;display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;z-index:5}.topbar h1{font-size:23px;margin:1px 0}.eyebrow{margin:0;color:#6a7771;font-size:12px;font-weight:700;text-transform:uppercase}.top-actions{display:flex;gap:10px;align-items:center}.search{width:260px;background:#f5f7f5}.content-area{padding:28px 32px}.page-error{margin:20px 32px}.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.course-card{position:relative;text-align:left;background:white;border:1px solid #dde3df;border-radius:7px;padding:20px;min-height:190px;color:inherit;overflow:hidden}.course-card:hover{border-color:#8fac9d;box-shadow:0 6px 18px #243b3020}.course-swatch{display:block;position:absolute;left:0;top:0;bottom:0;width:6px}.course-swatch.large{position:static;width:12px;height:52px;border-radius:3px}.course-card-head{display:flex;justify-content:space-between;gap:12px}.course-card h2{font-size:18px;margin:0}.course-card p{color:#66736d;min-height:48px}.course-meta{border-top:1px solid #edf0ee;padding-top:12px;display:flex;justify-content:space-between;color:#586760;font-size:13px}.status,.count{display:inline-flex;align-items:center;white-space:nowrap;background:#eef3ef;color:#38614e;padding:3px 7px;border-radius:4px;font-size:12px;font-weight:650}.empty-state,.loading-state{padding:80px 20px;text-align:center;color:#66736d}.empty-state h2{color:#26352e}.modal-backdrop{position:fixed;inset:0;background:#0d1e1790;z-index:20;display:grid;place-items:center;padding:20px}.modal{width:min(520px,100%);background:white;border-radius:7px;padding:22px;display:flex;flex-direction:column;gap:17px}.modal-head,.modal-actions,.panel-head,.course-summary{display:flex;align-items:center;justify-content:space-between}.modal-head h2{margin:0}.icon-button{background:transparent;font-size:24px;width:36px;height:36px}.modal-actions{justify-content:flex-end;gap:8px}.course-summary{justify-content:flex-start;gap:16px;background:white;border-bottom:1px solid #e0e5e1;padding:20px}.course-summary h2{margin:0}.course-summary p{margin:3px 0;color:#68756f}.course-summary .status{margin-left:auto}.tabs{display:flex;border-bottom:1px solid #dfe4e1}.tabs button{background:transparent;padding:12px 16px;color:#68756f}.tabs button.active{color:#166b45;border-bottom:2px solid #18794e}.content-grid{display:grid;grid-template-columns:minmax(230px,.7fr) minmax(400px,1.3fr);gap:18px;margin-top:18px}.panel{background:white;border:1px solid #dde3df;border-radius:7px;padding:18px}.panel h3{margin:2px 0;font-size:17px}.inline-form{display:flex;gap:8px;margin:16px 0}.list{display:flex;flex-direction:column}.list-row,.topic-row{display:flex;align-items:center;gap:10px;border-top:1px solid #edf0ee;padding:12px 4px}.list-row span:last-child{margin-left:auto;color:#7b8781}.drag{color:#a3ada8}.topic-row{justify-content:space-between}.topic-row p{margin:3px 0;color:#75817b;font-size:13px}.empty-inline{padding:24px;text-align:center;color:#7a857f}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}.metric{background:white;border:1px solid #dde3df;border-radius:7px;padding:18px}.metric span{display:block;color:#6f7b75;font-size:13px}.metric strong{display:block;font-size:28px;margin-top:8px}.publish{margin-top:18px}@media(max-width:820px){.auth-page{grid-template-columns:1fr}.auth-brand{min-height:260px;padding:32px}.study-visual{display:none}.auth-form-wrap{padding:32px 20px}.app-shell{display:block}.sidebar{position:fixed;z-index:10;bottom:0;top:auto;width:100%;height:64px;padding:7px 10px}.sidebar-brand,.sidebar-footer{display:none}.sidebar nav{height:100%;flex-direction:row;justify-content:space-around}.nav-item{flex-direction:column;gap:1px;padding:2px 10px;font-size:11px}.nav-item span{border:0;height:22px}.topbar{height:auto;padding:14px 16px}.top-actions .search{display:none}.content-area{padding:18px 16px 84px}.content-grid,.stats-grid{grid-template-columns:1fr}.course-grid{grid-template-columns:1fr}.topbar h1{font-size:20px}.course-summary{align-items:flex-start}.course-summary .status{margin-left:0}.page-error{margin:12px 16px}}

.analytics-tabs{width:300px;margin:18px 0 0;grid-template-columns:repeat(3,1fr)}.analytics-table{margin-top:18px;background:white;border:1px solid #dde3df;border-radius:7px;padding:18px}.analytics-table h3{margin:0 0 12px;font-size:17px}.table-scroll{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid #edf0ee;white-space:nowrap}th{color:#607068;font-size:12px}tbody tr:last-child td{border-bottom:0}
.mastery-distribution,.analytics-detail{margin-top:18px}.mastery-distribution{background:#fff;border:1px solid #dde3df;border-radius:7px;padding:18px}.mastery-distribution h3{font-size:17px;margin:0 0 12px}.distribution-row{display:grid;grid-template-columns:72px minmax(120px,1fr) 48px;align-items:center;gap:10px;margin:8px 0}.distribution-track{height:10px;background:#edf1ee;border-radius:3px;overflow:hidden}.distribution-track span{display:block;height:100%;background:#23815c}.analytics-filters{display:grid;grid-template-columns:minmax(180px,320px) minmax(260px,360px);gap:12px;margin:14px 0}.risk-filter{grid-template-columns:repeat(4,1fr)}.risk-explainer{font-size:13px;color:#607068;margin:8px 0 14px}.clickable-row{cursor:pointer}.clickable-row:hover{background:#f4f7f5}.detail-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:16px 0}.detail-grid>div,.detail-sections>section{background:#fff;border:1px solid #dde3df;border-radius:7px;padding:14px}.detail-grid span{display:block;color:#68756f;font-size:12px}.detail-grid strong{display:block;font-size:20px;margin-top:5px}.detail-sections{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.detail-sections h3{font-size:15px;margin:0 0 8px}.detail-sections p{margin:5px 0;color:#586760}.loading-state.compact{padding:24px}@media(max-width:820px){.analytics-tabs{width:100%}.analytics-filters,.detail-grid,.detail-sections{grid-template-columns:1fr}.analytics-table,.mastery-distribution{padding:12px}.distribution-row{grid-template-columns:64px minmax(80px,1fr) 36px}.course-workspace{overflow-x:hidden}.table-scroll{max-width:calc(100vw - 56px)}th,td{padding:9px 10px}.risk-explainer{line-height:1.6}}
.topbar-logout{display:none}.course-home .topbar-logout,.course-detail .topbar-logout{display:block;color:#18794e;padding:9px 4px}@media(max-width:820px){.topbar-logout{display:block;color:#18794e;padding:9px 4px}}
/* Round 4 governance and notification work surfaces. */
.governance-shell { display: grid; grid-template-columns: 190px minmax(0, 1fr); min-height: 680px; border: 1px solid #dfe4e1; background: #fff; }
.governance-nav { border-right: 1px solid #dfe4e1; background: #fafbf9; }
.governance-nav-title { padding: 16px 18px; background: #2f6f3e; color: #fff; font-weight: 700; }
.governance-nav button { width: 100%; border: 0; border-bottom: 1px solid #e7ebe8; background: transparent; color: #405047; padding: 13px 18px; text-align: left; }
.governance-nav button:hover { background: #f0f4ec; color: #245d35; }
.governance-nav button.active { background: #e8efe2; color: #245d35; font-weight: 700; box-shadow: inset 3px 0 #5f8f2f; }
.governance-content { min-width: 0; padding: 22px 26px 30px; }
.governance-content .table-wrap { width: 100%; overflow-x: auto; }
.governance-content .roster-head { flex-wrap: wrap; justify-content: flex-start; }
.governance-content .roster-head strong { margin-right: auto; }
.governance-content > .hidden { display: none; }
.governance-section { min-width: 0; }
.governance-section.hidden { display: none; }
.governance-section > .panel-head { padding-bottom: 12px; border-bottom: 1px solid #dfe4e1; }
.governance-section > .panel-head h3 { font-size: 19px; }
.academic-sync-controls { display: grid; grid-template-columns: repeat(3, minmax(110px, 1fr)) auto; gap: 10px; align-items: end; margin: 16px 0; }
.academic-sync-preview { margin: 14px 0 22px; }
.academic-sync-preview > .primary { margin-top: 12px; }
.governance-content .panel.governance-section { border: 0; padding: 0; border-radius: 0; }
.governance-list { display: grid; gap: 8px; margin-top: 14px; max-height: 360px; overflow: auto; }
.inline-form { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
.inline-form input { min-width: 0; }
.enrollment-summary { border: 1px solid #d8e1db; background: #f5f8f6; padding: 14px; border-radius: 6px; }
.enrollment-summary p { margin: 5px 0 0; color: #66736d; }
.leave-course { margin-top: 18px; color: #8f2925; }
.group-choice { width: 100%; min-height: 58px; border: 1px solid #dde3df; background: white; border-radius: 6px; padding: 10px; display: flex; align-items: center; justify-content: space-between; text-align: left; color: inherit; }
.group-choice.active { border-color: #18794e; box-shadow: 0 0 0 2px #18794e20; }
.group-choice p { margin: 3px 0 0; color: #68756f; font-size: 12px; }
.calendar-workspace { display: grid; gap: 16px; }
.calendar-toolbar-shell { display: grid; gap: 12px; }
.calendar-toolbar-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; }
.calendar-toolbar-field { min-width: 220px; flex: 1 1 220px; }
.calendar-view-switch { display: inline-flex; flex-wrap: wrap; gap: 8px; padding: 4px; background: #f4f7f5; border: 1px solid #dde3df; border-radius: 8px; }
.calendar-view-switch button { border: 0; background: transparent; padding: 8px 12px; border-radius: 6px; color: #405047; }
.calendar-view-switch button.active { background: #fff; box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08); color: #18794e; font-weight: 700; }
.calendar-layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 16px; align-items: start; }
.calendar-sidebar { display: grid; gap: 12px; position: sticky; top: 16px; }
.calendar-summary-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.calendar-summary-card { border: 1px solid #dde3df; border-radius: 8px; background: #f8faf9; padding: 12px; display: grid; gap: 6px; }
.calendar-summary-card span { color: #68756f; font-size: 12px; }
.calendar-summary-card strong { font-size: 18px; color: #1f2937; }
.calendar-sidebar-note { border: 1px dashed #c8d5ce; border-radius: 8px; padding: 12px; background: #f9fbfa; color: #55665d; font-size: 13px; }
.calendar-main-stack { min-width: 0; display: grid; gap: 14px; }
.calendar-main-panel { min-width: 0; }
.calendar-range-nav { display: inline-flex; gap: 8px; }
.calendar-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 16px 0; }
.calendar-two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 12px 0; }
.assignment-create-panel, .assignment-submissions-panel, .attendance-summary-panel { margin-top: 16px; }
.assignment-create-panel .span-all { grid-column: 1 / -1; }
.assignment-row { align-items: flex-start; }
.assignment-row .calendar-card-actions { gap: 8px; flex-wrap: wrap; }
.attendance-review-form { margin-top: 12px; grid-template-columns: minmax(120px, 180px) minmax(0, 1fr) auto; }
.activity-grade-form { margin-top: 12px; grid-template-columns: minmax(100px, 140px) minmax(0, 1fr) minmax(0, 1fr) auto; }
.activity-kind-tabs { grid-template-columns: repeat(5, minmax(0, 1fr)); margin: 12px 0; }
.calendar-toolbar { margin-top: 12px; }
.calendar-selection-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 14px 0; }
.calendar-entry-card { border: 1px solid #dde3df; border-radius: 6px; background: #fff; padding: 12px; display: grid; gap: 10px; }
.calendar-entry-card p { margin: 0; color: #586760; white-space: pre-wrap; overflow-wrap: anywhere; }
.calendar-week-row { grid-template-columns: minmax(0, 1fr); }
.calendar-card-actions { display: flex; justify-content: flex-end; }
.calendar-meta { display: flex; flex-wrap: wrap; gap: 12px; color: #68756f; font-size: 12px; }
.calendar-month-weekdays { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 8px; margin-bottom: 8px; color: #68756f; font-size: 12px; font-weight: 700; }
.calendar-month-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 8px; }
.calendar-day-cell { min-height: 132px; border: 1px solid #dde3df; border-radius: 8px; background: #fff; padding: 10px; display: grid; grid-template-rows: auto 1fr; gap: 8px; }
.calendar-day-cell.muted { background: #f7f9f8; color: #86918b; }
.calendar-day-label { font-weight: 700; color: #2f3b34; }
.calendar-day-events { display: grid; gap: 6px; align-content: start; }
.calendar-event-chip { width: 100%; border: 1px solid #d7e4dd; border-left: 3px solid #18794e; background: #f8fbf9; border-radius: 6px; padding: 8px; text-align: left; display: grid; gap: 4px; color: inherit; }
.calendar-event-chip strong { font-size: 13px; }
.calendar-event-chip span { color: #68756f; font-size: 12px; }
.calendar-drawer { position: fixed; z-index: 30; top: 16px; right: 16px; bottom: 16px; width: min(520px, calc(100vw - 32px)); min-width: 0; display: grid; gap: 14px; align-content: start; overflow: auto; box-shadow: 0 12px 32px rgba(15, 23, 42, 0.18); }
.calendar-drawer-stack { display: grid; gap: 14px; }
.calendar-material-card { width: 100%; border: 1px solid #dde3df; border-radius: 6px; background: #fff; padding: 12px; display: grid; gap: 8px; text-align: left; color: inherit; }
.calendar-material-card.active { border-color: #18794e; box-shadow: 0 0 0 2px #18794e20; }
.calendar-material-card p { margin: 0; color: #586760; white-space: pre-wrap; overflow-wrap: anywhere; }
.calendar-material-detail { margin-top: 14px; display: grid; gap: 14px; }
.calendar-material-split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.calendar-inline-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; }
.calendar-inline-actions label { min-width: 220px; flex: 1 1 220px; }
.calendar-help { margin: 0; color: #68756f; font-size: 12px; line-height: 1.6; }
.class-insight-panel, .lesson-plan-panel { margin-top: 12px; border: 1px solid #dde3df; border-radius: 6px; padding: 12px; background: #f8faf9; display: grid; gap: 10px; min-width: 0; }
.class-insight-body, .class-insight-summary, .lesson-plan-controls { min-width: 0; display: grid; gap: 8px; }
.class-insight-summary p { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.lesson-plan-preview { max-height: 360px; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; background: #fff; border: 1px solid #dde3df; padding: 12px; font: inherit; line-height: 1.6; }
.roster-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 18px; }
.roster-list { max-height: 320px; overflow: auto; margin-top: 8px; border-top: 1px solid #edf0ee; }
.roster-row { min-height: 52px; display: grid; grid-template-columns: 20px minmax(0, 1fr); align-items: center; gap: 9px; border-bottom: 1px solid #edf0ee; padding: 7px 3px; }
.roster-row input { width: 16px; height: 16px; }
.roster-row span { display: flex; justify-content: space-between; gap: 8px; min-width: 0; }
.roster-row small { color: #68756f; }
.audience-list { margin-top: 18px; border-top: 1px solid #dfe5e1; padding-top: 14px; }
.status-banner { grid-column: 1 / -1; padding: 10px 12px; border-left: 3px solid #15803d; background: #f0fdf4; }
.profile-modal { width: min(620px, 100%); max-height: 90vh; overflow-y: auto; }
.profile-tabs { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.security-settings { display: grid; gap: 14px; }
.security-settings h3 { margin: 4px 0; font-size: 16px; }
.security-settings .list-row { align-items: flex-start; }
.security-settings .list-row p { margin: 3px 0 0; color: #66736d; font-size: 12px; overflow-wrap: anywhere; }
.preference-row { display: grid; grid-template-columns: minmax(140px, 1fr) auto auto; gap: 16px; align-items: center; border-top: 1px solid #edf0ee; padding: 12px 0; }
.preference-row label { flex-direction: row; align-items: center; }
.preference-row input { width: auto; }
.danger { color: #8f2925; border-color: #e1b5b2; }
@media(max-width:640px){.profile-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}.preference-row{grid-template-columns:1fr auto auto}.attendance-review-form,.activity-grade-form{grid-template-columns:1fr}}
.notification-list { display: grid; }
.notification-row { width: 100%; min-height: 76px; display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; text-align: left; padding: 14px 4px; border: 0; border-bottom: 1px solid #e5e7eb; background: transparent; }
.notification-row.unread { border-left: 3px solid #2563eb; padding-left: 12px; }
.notification-row p { margin: 5px 0 0; color: #4b5563; }
.notification-row time { flex: 0 0 auto; color: #6b7280; }
@media (max-width: 900px) { .governance-shell { grid-template-columns: 1fr; } .governance-nav { border-right: 0; border-bottom: 1px solid #dfe4e1; display: grid; grid-template-columns: repeat(3, 1fr); } .governance-nav-title { grid-column: 1 / -1; } .governance-nav button { text-align: center; padding: 10px 6px; } .governance-content { padding: 16px 12px 24px; } .governance-content .inline-form, .academic-sync-controls, .calendar-form-grid, .calendar-two-col, .calendar-selection-grid, .calendar-layout, .calendar-summary-grid, .calendar-material-split { grid-template-columns: 1fr; } .activity-kind-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); } .calendar-toolbar-row { align-items: stretch; } .calendar-toolbar-field { min-width: 0; } .calendar-month-weekdays, .calendar-month-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .calendar-sidebar { position: static; } .calendar-drawer { inset: 0; width: 100vw; max-width: none; border-radius: 0; } }

/* Round 4.6 ordered course workflow and book-style catalog. */
.course-section { margin-bottom: 34px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; margin-bottom: 13px; }
.section-heading h2 { margin: 2px 0 0; font-size: 20px; }
.course-code { color: #476158; font: 650 12px ui-monospace, "Cascadia Mono", monospace; }
.enrollment-share { display: grid; grid-template-columns: 1fr; gap: 12px; padding: 14px 14px; margin: 0 14px; background: #f6faf8; border: 1px solid #dfe7e2; border-radius: 4px; }
.enrollment-share h3 { margin: 0 0 6px; font-size: 13px; color: #2a3730; }
.invite-details dl { display: grid; gap: 8px; margin: 0 0 10px; }
.invite-details dl div { min-width: 0; }
.invite-details dt { color: #68756f; font-size: 11px; }
.invite-details dd { margin: 2px 0 0; font: 700 13px ui-monospace, "Cascadia Mono", monospace; overflow-wrap: anywhere; }
.invite-link { display: inline-block; width: 100%; text-decoration: none; text-align: center; font-size: 12px; padding: 6px 8px; box-sizing: border-box; }
.qr-frame { justify-self: center; width: 120px; aspect-ratio: 1; padding: 8px; background: #fff; border: 1px solid #ccd5d0; }

.course-local-card { display: block; width: 100%; padding: 14px 12px; border: 0; border-bottom: 1px solid #ebeef2; background: transparent; text-align: left; cursor: pointer; font: inherit; color: inherit; }
.course-local-card:hover { background: #eef2f6; }
.course-local-card .course-local-cover { margin: 0 auto 10px; }
.course-local-card .course-local-title { display: block; font-size: 14px; line-height: 1.3; }
.course-local-card .course-local-code { margin: 4px 0 0; font-size: 12px; color: #6b7280; }

.modal-overlay { position: fixed; inset: 0; background: rgba(15, 23, 42, 0.45); z-index: 50; }
.modal-card { position: fixed; z-index: 51; top: 50%; left: 50%; transform: translate(-50%, -50%); width: min(540px, 92vw); max-height: 88vh; background: #fff; border-radius: 8px; box-shadow: 0 18px 48px rgba(15, 23, 42, 0.28); display: flex; flex-direction: column; }
.modal-header { display: flex; align-items: center; gap: 12px; padding: 16px 20px; border-bottom: 1px solid #e5e8ee; }
.modal-header h2 { margin: 0; font-size: 16px; flex: 1; min-width: 0; overflow-wrap: anywhere; }
.modal-close { background: none; border: 0; font-size: 18px; cursor: pointer; color: #6b7280; padding: 4px 8px; border-radius: 4px; }
.modal-close:hover { background: #f1f3f6; color: #1f2937; }
.modal-body { padding: 18px 20px; overflow-y: auto; display: grid; gap: 18px; }
.modal-stats h3 { margin: 0 0 10px; font-size: 13px; color: #4b5563; }
.stats-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 12px; }
.stats-grid li { background: #f6f8fb; border: 1px solid #e5e8ee; border-radius: 6px; padding: 12px 14px; display: flex; flex-direction: column; gap: 4px; }
.stats-grid .stat-label { font-size: 12px; color: #6b7280; }
.stats-grid .stat-value { font-size: 18px; color: #1f2937; }
.modal-body .enrollment-share { margin: 0; }
@media (max-width: 640px) { .modal-card { width: 96vw; max-height: 92vh; } }
.qr-grid { width: 100%; height: 100%; display: grid; grid-template-columns: repeat(var(--qr-size), 1fr); grid-template-rows: repeat(var(--qr-size), 1fr); }
.qr-grid span { background: #fff; }
.qr-grid span.dark { background: #111; }
.catalog-layout { display: grid; grid-template-columns: minmax(420px, 1fr) minmax(260px, 340px); gap: 18px; margin-top: 18px; align-items: start; }
.course-catalog { padding: 0; overflow: hidden; }
.course-catalog>.panel-head { padding: 18px; border-bottom: 1px solid #dde3df; }
.catalog-tree { display: grid; }
.catalog-chapter { border-bottom: 1px solid #e6ebe8; }
.catalog-chapter.active { box-shadow: inset 3px 0 #18794e; }
.chapter-row { width: 100%; min-height: 58px; display: grid; grid-template-columns: 82px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 12px 18px; border: 0; background: #f7f9f8; color: inherit; text-align: left; }
.chapter-row:hover { background: #f0f5f2; }
.chapter-row.static { cursor: default; }
.chapter-number { color: #18794e; font-size: 12px; font-weight: 700; }
.chapter-row>span:last-child { color: #738079; font-size: 12px; }
.chapter-topics { background: #fff; }
.catalog-topic { width: 100%; min-height: 62px; display: grid; grid-template-columns: 48px minmax(0, 1fr) auto; gap: 10px; align-items: center; border: 0; border-top: 1px solid #edf0ee; background: #fff; padding: 10px 18px 10px 34px; color: inherit; text-align: left; }
.catalog-topic:hover { background: #f8faf9; }
.catalog-topic>span:first-child { color: #86918b; font-size: 12px; }
.catalog-topic div { min-width: 0; }
.catalog-topic strong,.catalog-topic small { display: block; overflow-wrap: anywhere; }
.catalog-topic small { margin-top: 3px; color: #75817b; }
.chapter-empty { padding: 14px 34px 14px 94px; color: #8a958f; font-size: 13px; border-top: 1px solid #edf0ee; }
.catalog-chapter.unfiled { border-top: 8px solid #f0f3f1; }
.catalog-editor { position: sticky; top: 110px; }
.catalog-editor h3 { margin-top: 2px; }
.catalog-form { display: grid; gap: 10px; margin-top: 16px; }
.catalog-form button { width: 100%; }
.editor-divider { height: 1px; background: #e0e5e2; margin: 20px 0; }
.selected-chapter { color: #18794e; font-size: 13px; overflow-wrap: anywhere; }
.catalog-guidance p:last-child { color: #68756f; }
.catalog-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin: 18px 18px 0; }
.catalog-toolbar-actions { display: flex; align-items: center; gap: 12px; }
.catalog-edit-toggle { min-width: 104px; box-shadow: 0 5px 14px #4f6fff24; }
.catalog-toolbar>span { color: #6b7872; font-size: 12px; }
.catalog-layout-v2 { grid-template-columns: minmax(0,1fr); margin-top: 12px; }
.catalog-layout-v2.edit-mode { grid-template-columns: minmax(360px,400px) minmax(420px,1fr); }
.catalog-week-group { border-bottom: 8px solid #f0f3f1; }
.catalog-node { position: relative; border-top: 1px solid #e8ecea; }
.catalog-node-main { width: 100%; min-height: 58px; display: grid; grid-template-columns: 72px minmax(0,1fr) auto; gap: 12px; align-items: center; padding: 10px 92px 10px 18px; border: 0; background: #fff; color: inherit; text-align: left; }
.catalog-node-main:hover { background: #f7faf8; }
.catalog-node.depth-0 .catalog-node-main { min-height: 66px; background: #f1f5f3; }
.catalog-node.depth-1 .catalog-node-main { padding-left: 34px; background: #fafcfb; }
.catalog-node.depth-2 .catalog-node-main { padding-left: 56px; }
.catalog-node-index { color: #577067; font-size: 12px; font-weight: 700; }
.catalog-node-title { min-width: 0; display: grid; gap: 2px; }
.catalog-node-title small { color: #85918b; font-size: 11px; }
.catalog-node-title strong { overflow-wrap: anywhere; }
.catalog-node-count { color: #75817b; font-size: 12px; white-space: nowrap; }
.catalog-node-actions { position: absolute; right: 12px; top: 50%; z-index: 1; display: flex; gap: 4px; transform: translateY(-50%); }
.catalog-topic-row { position: relative; }
.topic-actions { position: absolute; right: 12px; top: 50%; z-index: 1; display: flex; gap: 4px; transform: translateY(-50%); }
.catalog-node-actions .icon-button,.topic-actions .icon-button { width: auto; height: 28px; padding: 4px 7px; border: 1px solid #d8dfdb; border-radius: 4px; background: #fff; font-size: 12px; line-height: 1; white-space: nowrap; }
.catalog-node-actions .icon-button.danger,.topic-actions .icon-button.danger { border-color: #efcbc8; color: #aa322d; }
.catalog-layout-v2:not(.edit-mode) .catalog-node-actions,.catalog-layout-v2:not(.edit-mode) .topic-actions { display: none; }
.catalog-layout-v2:not(.edit-mode) .catalog-node-main { padding-right: 18px; }
.catalog-layout-v2.edit-mode .course-catalog>.panel-head { padding: 14px; }
.catalog-layout-v2.edit-mode .catalog-node-main { grid-template-columns: 52px minmax(0,1fr); padding: 9px 96px 9px 12px; }
.catalog-layout-v2.edit-mode .catalog-node.depth-1 .catalog-node-main { padding-left: 20px; }
.catalog-layout-v2.edit-mode .catalog-node.depth-2 .catalog-node-main { padding-left: 30px; }
.catalog-layout-v2.edit-mode .catalog-node-count { grid-column: 2; }
.catalog-layout-v2.edit-mode .catalog-topic { grid-template-columns: 38px minmax(0,1fr); padding: 9px 96px 9px 34px; }
.catalog-layout-v2.edit-mode .catalog-topic .status { grid-column: 2; width: fit-content; }
.catalog-layout-v2.edit-mode .catalog-editor { position: static; min-height: 560px; }
.catalog-layout-v2.edit-mode .catalog-editor>.panel-head { align-items: flex-start; border-bottom: 1px solid #e2e7e4; padding-bottom: 16px; }
.editor-path { max-width: 45%; color: #6b7872; font-size: 12px; text-align: right; overflow-wrap: anywhere; }
.catalog-section-group .catalog-topic { padding-left: 76px; }
.catalog-unfiled { border-top: 8px solid #f0f3f1; }
.catalog-unfiled-head { display: flex; justify-content: space-between; gap: 12px; padding: 14px 18px; background: #fff8ed; color: #815d26; }
.catalog-unfiled-head span { font-size: 12px; }
.unfiled-topic-item { border-bottom: 1px solid #eadfce; background: #fffdf9; }
.unfiled-move { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 8px; padding: 10px 12px 12px 34px; }
.unfiled-move select { min-width: 0; border: 1px solid #ccd3ce; border-radius: 5px; background: #fff; padding: 8px 10px; color: #273d33; }
.unfiled-move .secondary { white-space: nowrap; }
.unfiled-error { margin: -4px 12px 10px 34px; color: #a93631; font-size: 12px; }
.node-kind { width: 100%; }
.node-kind button { flex: 1; }
.editor-context { min-height: 20px; margin: 0; color: #68756f; font-size: 12px; overflow-wrap: anywhere; }
/* Catalog node / topic rows */
.catalog-node-row{display:flex;align-items:center;gap:8px;border-top:1px solid #edf0ee;padding:8px 12px;position:relative}
.catalog-node-row:hover{background:#f7f9f7}
.catalog-node-info{display:flex;align-items:center;gap:10px;min-width:0;flex:1;cursor:pointer}
.catalog-node-kind{width:36px;font-size:12px;color:#607068;flex-shrink:0;text-align:center}
.catalog-node-title{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.catalog-node-position{font-size:12px;color:#7b8781;flex-shrink:0}
.catalog-node-child{font-size:12px;color:#7b8781;flex-shrink:0;margin-left:auto}
.catalog-node-actions{display:flex;gap:4px;flex-shrink:0}
.catalog-topic-row{display:flex;align-items:center;gap:8px;border-top:1px solid #edf0ee;border-left:4px solid transparent;padding:10px 12px 10px 8px;position:relative}
.catalog-topic-row:hover{background:#f7f9f7}
.catalog-topic-row.learning-passed{border-left-color:#24885f;background:#f4fbf7}.catalog-topic-row.learning-passed .catalog-topic-title{color:#156b4a}
.catalog-topic-row.learning-failed{border-left-color:#c74336;background:#fff8f7}.catalog-topic-row.learning-failed .catalog-topic-title{color:#a2352a}
.catalog-topic-row.learning-not-started{border-left-color:#aab3ae}.catalog-topic-row.learning-not-started .catalog-topic-title{color:#596660}
.catalog-topic-info{display:flex;align-items:center;gap:10px;min-width:0;flex:1;cursor:pointer}
.catalog-topic-title{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}
.catalog-topic-position{font-size:12px;color:#7b8781;flex-shrink:0;width:40px}
.catalog-topic-status{flex-shrink:0}
.catalog-topic-summary{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#7b8781;font-size:13px;flex:1}
.catalog-task-progress{font-size:13px;font-weight:700;padding:5px 9px;border:1px solid transparent;border-radius:4px;white-space:nowrap}
.catalog-task-progress.passed{color:#156b4a;background:#e8f5ee;border-color:#b8ddc9}
.catalog-task-progress.failed{color:#a2352a;background:#fde9e7;border-color:#efc2bd}
.catalog-task-progress.not-started{color:#596660;background:#eef1ef;border-color:#d7ddda}
.catalog-topic-actions{display:flex;gap:4px;flex-shrink:0}

.task-chain{margin:0;border:1px solid #dfe6e2;background:#fff}
.task-chain-summary{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:18px;align-items:center;padding:18px 20px}
.task-chain-summary h3,.task-work-head h3{margin:2px 0 0;font-size:18px}
.task-chain-metrics{display:flex;flex-direction:column;align-items:flex-end;min-width:92px}
.task-chain-metrics strong{font-size:24px;color:#156b4a}.task-chain-metrics span{font-size:12px;color:#6d7973}
.task-chain-final{margin:0;padding:10px 20px;border-top:1px solid #dfe6e2;background:#eef8f3;color:#155f44;font-weight:700}
.task-metro-scroll{max-width:100%;overflow-x:auto;overscroll-behavior-inline:contain;border-bottom:1px solid #e3e8e5;background:#fafbfa;scrollbar-width:thin}
.task-metro{position:relative;display:grid;grid-template-columns:repeat(9,minmax(112px,1fr));min-width:1008px;padding:17px 10px 13px}
.task-metro-line{position:absolute;z-index:0;top:34px;left:66px;right:66px;height:6px;border-radius:3px;background:#dce3df;overflow:hidden}
.task-metro-line span{display:block;height:100%;border-radius:3px;background:#24885f;transition:width .45s ease}
.task-step{position:relative;z-index:1;display:flex;min-width:0;min-height:78px;flex-direction:column;align-items:center;gap:8px;border:0;background:transparent;color:#3f4c46;text-align:center;padding:0 6px}
.task-step:hover:not(:disabled) .task-step-index,.task-step.active .task-step-index{border-color:#18794e;box-shadow:0 0 0 5px #dff1e7}
.task-step:disabled{cursor:not-allowed;color:#949e99}.task-step:disabled .task-step-index{background:#e5e9e7;color:#7e8983}
.task-step-index{display:grid;place-items:center;width:34px;height:34px;flex:0 0 34px;border:3px solid #fff;border-radius:50%;background:#6f7d76;color:#fff;box-shadow:0 0 0 2px #aab5af;font-size:12px;font-weight:800;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
.task-step.passed .task-step-index{background:#24885f;box-shadow:0 0 0 2px #24885f}.task-step.failed .task-step-index{background:#c74336;box-shadow:0 0 0 2px #c74336}.task-step.failed{color:#a2352a}
.task-step.active .task-step-index{animation:metro-station-pulse 1.8s ease-in-out infinite}
.task-step-copy{min-width:0}.task-step-copy strong,.task-step-copy small{display:block;overflow-wrap:anywhere}.task-step-copy strong{font-size:12px;line-height:1.35}.task-step-copy small{margin-top:3px;font-size:11px;color:inherit}
@keyframes metro-station-pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.1)}}
.task-work-panel,.task-history{padding:20px}.task-work-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.task-work-panel>p{color:#67736d}.task-work-panel textarea{width:100%;resize:vertical;min-height:150px}.task-work-actions{display:flex;gap:10px;margin-top:12px}.task-state{font-size:12px;padding:4px 8px;border-radius:4px;background:#eef1ef}.task-state.failed{background:#fde9e7;color:#a2352a}.task-state.passed{background:#e5f4ec;color:#156b4a}
.task-result{margin-top:14px;padding:12px;border-left:4px solid #24885f;background:#eef8f3}.task-result.failed{border-color:#c74336;background:#fff0ee;color:#8f2f26}.task-result strong{font-size:20px}.task-result p{margin:5px 0 0}
.task-history-item{border-top:1px solid #e4e9e6}.task-history-item.failed{border-left:4px solid #c74336;background:#fff7f6}.task-history-item summary{display:flex;justify-content:space-between;gap:18px;padding:14px;cursor:pointer}.task-history-item summary div{display:flex;flex-direction:column}.task-history-item summary div:last-child{text-align:right}.task-history-item span,.task-history-item time{font-size:12px;color:#6d7973}.task-history-item>p,.task-history-item>pre{margin:0 14px 14px}.task-history-item pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#f5f7f6;padding:10px}.task-specialized-tools{margin:0 0 22px}.task-specialized-tools:empty{margin-bottom:22px}.task-specialized-tool{border:1px solid #dfe6e2;border-top:0;background:#fff;padding:20px}
@media (max-width:760px){.task-chain-summary{grid-template-columns:1fr auto}.task-chain-summary>button{grid-column:1/-1}.task-metro{grid-template-columns:repeat(9,104px);min-width:936px}.task-metro-line{left:62px;right:62px}.task-history-item summary{flex-direction:column}.task-history-item summary div:last-child{text-align:left}.task-specialized-tool{padding:12px}.catalog-task-progress{white-space:normal}.catalog-topic-row{align-items:flex-start;flex-wrap:wrap}.catalog-topic-info{flex-basis:100%;width:100%}.catalog-topic-actions{width:100%;justify-content:flex-end}.catalog-topic-title{white-space:normal;overflow:visible}.catalog-topic-summary{display:none}}
@media (prefers-reduced-motion:reduce){.task-metro-line span{transition:none}.task-step.active .task-step-index{animation:none}}
.inline-edit{width:auto;min-width:140px;padding:6px 8px;font-size:14px}
@media(max-width:820px){
  .top-actions { flex-wrap: wrap; justify-content: flex-end; }
  .top-actions .secondary,.top-actions .primary { padding: 8px 10px; font-size: 13px; }
  .course-section { margin-bottom: 28px; }
  .enrollment-share { grid-template-columns: 1fr; }
  .qr-frame { justify-self: start; }
  .invite-details dl { flex-direction: column; gap: 10px; }
  .catalog-layout { grid-template-columns: 1fr; }
  .catalog-toolbar { align-items: flex-start; flex-direction: column; margin: 14px 12px 0; }
  .catalog-toolbar-actions { width: 100%; align-items: stretch; flex-direction: column; }
  .catalog-toolbar-actions .segmented { width: 100%; }
  .catalog-layout-v2.edit-mode { grid-template-columns: 1fr; }
  .catalog-editor { position: static; }
  .catalog-node-main { grid-template-columns: 54px minmax(0,1fr); padding: 10px 68px 10px 12px; }
  .catalog-node.depth-1 .catalog-node-main { padding-left: 22px; }
  .catalog-node.depth-2 .catalog-node-main { padding-left: 34px; }
  .catalog-node-count { grid-column: 2; }
  .catalog-node-actions { right: 6px; }
  .catalog-node-actions .icon-button { padding: 5px; font-size: 11px; }
  .chapter-row { grid-template-columns: 70px minmax(0, 1fr) auto; padding: 11px 12px; }
  .catalog-topic { grid-template-columns: 38px minmax(0, 1fr); padding: 10px 12px 10px 20px; }
  .catalog-topic .status { grid-column: 2; width: fit-content; }
  .unfiled-move { grid-template-columns: 1fr; padding-left: 20px; }
  .unfiled-error { margin-left: 20px; }
  .chapter-empty { padding-left: 70px; }
}

/* Reference layout: course catalog home and course portal detail. */
.course-home { display: block; min-height: 100vh; background: #fff; }
.course-home .sidebar { display: none; }
.course-home .topbar { height: 58px; padding: 10px 32px; box-shadow: 0 1px 5px #263c3014; }
.course-home .topbar-title { display: flex; align-items: center; gap: 20px; }
.course-home .topbar-title .eyebrow,.course-home .topbar-title h1 { display: none; }
.course-home .topbar-brand,.course-detail .topbar-brand { display: flex; align-items: center; gap: 9px; font-size: 19px; color: #26352e; }
.course-home .content-area { max-width: 1240px; margin: 0 auto; padding: 0 30px 48px; }
.course-home .top-actions .search { display: block; width: 240px; }
.course-tabs { display: flex; gap: 40px; border-bottom: 1px solid #e2e7e4; margin: 0 -30px; padding: 0 30px; }
.course-tabs button { position: relative; border: 0; background: transparent; color: #64736c; padding: 20px 6px 16px; font-size: 15px; }
.course-tabs button.active { color: #17352b; font-weight: 700; }
.course-tabs button.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: #5c7cff; border-radius: 3px 3px 0 0; }
.course-filters { display: flex; gap: 28px; margin-top: 30px; }
.course-filters select { width: 240px; height: 36px; border: 1px solid #ccd5d0; border-radius: 4px; padding: 0 12px; color: #485851; background: #fff; }
.course-filter-note { color: #718078; font-size: 13px; margin: 28px 0 22px; }
.course-home .course-section { margin-bottom: 0; }
.course-home .section-heading { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.course-home .course-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 38px 40px; }
.course-home .course-card { min-height: 305px; padding: 0 8px 0 6px; border: 0; border-radius: 0; background: transparent; box-shadow: none; overflow: visible; }
.course-home .course-card:hover { border: 0; box-shadow: none; }
.course-home .course-card .course-swatch { display: none; }
.course-cover { height: 132px; border-radius: 8px; background: linear-gradient(145deg,#1b1d23,#090a0d 60%,#b9a99d); display: grid; place-items: center; overflow: hidden; position: relative; margin-bottom: 14px; }
.course-card:nth-child(3n+2) .course-cover { background: linear-gradient(135deg,#e9dfbb,#f9f8f2 48%,#a6b2a3); }
.course-card:nth-child(3n) .course-cover { background: linear-gradient(135deg,#d8d6bd,#fbfaf1 48%,#b8c3b3); }
.cover-book { width: 72px; height: 32px; display: block; border-radius: 50% 12% 50% 12%; background: #f3e7ce; box-shadow: -19px 3px 0 #cfb98e, 19px 3px 0 #d9c7a4, 0 10px 20px #0006; transform: perspective(90px) rotateX(32deg); }
.course-card-head { align-items: start; }
.course-home .course-card h2 { font-size: 16px; line-height: 1.45; color: #26352e; }
.course-home .course-card p { min-height: auto; margin: 6px 0 7px; color: #75827b; font-size: 13px; }
.course-home .course-card .status { background: #eef3ff; color: #597cff; font-weight: 500; }
.course-home .course-code { color: #8a9690; font-size: 12px; }
.course-home .course-meta { border: 0; display: block; padding-top: 4px; color: #839089; font-size: 12px; }
.course-home .course-meta span:last-child { display: none; }
.course-home .empty-inline { padding: 44px 20px; }
.course-detail { display: block; min-height: 100vh; background: #f3f5f8; }
.course-detail .sidebar { display: none; }
.course-detail .topbar { height: 56px; padding: 8px 30px; box-shadow: 0 1px 5px #263c3014; }
.course-detail .topbar-title { display: flex; align-items: center; gap: 18px; }
.course-detail .topbar-title .eyebrow { display: none; }
.course-detail .topbar-title h1 { font-size: 15px; font-weight: 500; color: #5d6a64; }
.course-detail .top-actions .search { width: 210px; }
.course-detail .course-workspace { padding: 30px; max-width: 1400px; margin: 0 auto; }
.course-main-layout { display: grid; grid-template-columns: 180px minmax(0,1fr); gap: 28px; align-items: start; }
.course-local-nav { min-height: 720px; background: #fff; border-radius: 4px; padding-bottom: 18px; box-shadow: 0 1px 3px #2947370d; }
.course-back { width: 100%; text-align: left; border: 0; background: transparent; color: #5d6a64; padding: 14px 14px 10px; font-size: 12px; }
.course-local-cover { height: 92px; margin: 0 14px 14px; border-radius: 4px; display: grid; place-items: center; background: linear-gradient(145deg,#1b1d23,#111 55%,#b9a99d); }
.course-local-cover .cover-book { transform: scale(.72) perspective(90px) rotateX(32deg); }
.course-local-title { display: block; margin: 0 14px; font-size: 15px; line-height: 1.45; color: #2a3730; }
.course-local-code { margin: 5px 14px 18px; color: #909c96; font: 11px ui-monospace, monospace; }
.course-local-links { display: grid; }
.course-local-links button { border: 0; border-left: 3px solid transparent; background: #fff; color: #66736d; text-align: left; padding: 11px 18px; font-size: 13px; }
.course-local-links button:hover,.course-local-links button.active { background: #eef4ff; border-left-color: #5d7fff; color: #4c70ed; }
.course-local-nav > .leave-course { width: calc(100% - 36px); margin: 18px; }
.course-main-content { min-width: 0; background: #fff; border-radius: 5px; box-shadow: 0 1px 3px #2947370d; overflow: hidden; }
.course-detail .course-summary { border: 0; padding: 22px 28px 14px; }
.course-detail .tabs { padding: 0 18px; }
.course-detail .content-grid,.course-detail .catalog-layout { margin: 18px; }
.course-detail .enrollment-share { margin: 0 18px 18px; border: 1px solid #dfe5e1; border-radius: 4px; }
.course-detail .publish,.course-detail .leave-course { margin: 0 18px 18px; }
@media(max-width:820px){
  .course-home .topbar { padding: 10px 16px; }
  .course-home .content-area { padding: 0 16px 82px; }
  .course-tabs { margin: 0 -16px; padding: 0 16px; gap: 24px; }
  .course-filters { gap: 10px; margin-top: 20px; }
  .course-filters select { width: 50%; }
  .course-home .course-grid { grid-template-columns: 1fr; gap: 26px; }
  .course-home .course-card { min-height: 0; }
  .course-detail .topbar { padding: 8px 14px; }
  .course-detail .topbar-brand strong { display: none; }
  .course-detail .top-actions .search { display: none; }
  .course-detail .course-workspace { padding: 14px 10px 82px; }
  .course-main-layout { grid-template-columns: 1fr; gap: 12px; }
  .course-local-nav { min-height: 0; padding: 0 0 8px; }
  .course-local-cover,.course-local-title,.course-local-code { display: none; }
  .course-back { padding: 10px 14px; }
  .course-local-links { display: flex; overflow-x: auto; }
  .course-local-links button { white-space: nowrap; border-left: 0; border-bottom: 3px solid transparent; padding: 9px 15px; }
  .course-local-links button:hover,.course-local-links button.active { border-left: 0; border-bottom-color: #5d7fff; }
  .course-local-nav .enrollment-share { display: none; }
  .course-main-content { border-radius: 4px; }
}

.dialog-backdrop{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,0.45);display:flex;align-items:center;justify-content:center;padding:24px}
.dialog{background:white;border-radius:12px;box-shadow:0 8px 40px rgba(0,0,0,0.18);width:100%;max-width:640px;max-height:90vh;display:flex;flex-direction:column;overflow:hidden}
.dialog-head{display:flex;align-items:center;justify-content:space-between;padding:20px 24px 0}
.dialog-head h2{margin:0;font-size:18px}
.dialog-form{padding:20px 24px 24px;overflow-y:auto;display:flex;flex-direction:column;gap:16px}
.dialog-form label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:#4a5750;font-weight:500}
.dialog-form label input,.dialog-form label textarea{padding:8px 12px;border:1px solid #cdd5cf;border-radius:6px;font-size:14px;font-family:inherit;transition:border-color .15s}
.dialog-form label input:focus,.dialog-form label textarea:focus{border-color:#18794e;outline:none}
.dialog-form label textarea{resize:vertical;min-height:60px}
.dialog-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.dialog-actions{display:flex;justify-content:flex-end;gap:10px;padding-top:4px}
.dialog-actions button{padding:8px 20px;border-radius:6px;font-size:14px;border:1px solid #cdd5cf;background:white;color:#1d2923;cursor:pointer}
.dialog-actions button.primary{background:#18794e;color:white;border-color:#18794e}
.dialog-actions button.primary:hover{background:#11643f}
.dialog-actions button.primary:disabled{opacity:.6;cursor:default}

.dialog-form{display:flex;flex-direction:column;gap:16px;overflow-y:auto}
.dialog-form label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:#4a5750;font-weight:500}
.dialog-form label input,.dialog-form label textarea{padding:8px 12px;border:1px solid #cdd5cf;border-radius:6px;font-size:14px;font-family:inherit;width:100%}
.dialog-form label input:focus,.dialog-form label textarea:focus{border-color:#18794e;outline:none}
.dialog-form label textarea{resize:vertical;min-height:60px}
.dialog-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* Markdown rendered body */
.markdown-body{font-size:15px;line-height:1.7;color:#1d2923;overflow-wrap:break-word}
.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4{margin:1.2em 0 .5em;line-height:1.3}
.markdown-body h1{font-size:1.6em}
.markdown-body h2{font-size:1.35em}
.markdown-body h3{font-size:1.15em}
.markdown-body p{margin:0 0 .8em}
.markdown-body ul,.markdown-body ol{padding-left:1.5em;margin:0 0 .8em}
.markdown-body li{margin:.2em 0}
.markdown-body code{background:#edf2ef;padding:2px 5px;border-radius:3px;font-size:.9em;font-family:Consolas,monospace}
.markdown-body pre{background:#1e1e1e;color:#d4d4d4;padding:14px 18px;border-radius:8px;overflow-x:auto;margin:0 0 1em;font-size:13px;line-height:1.5}
.markdown-body pre code{background:none;padding:0;color:inherit;font-size:inherit}
.markdown-body blockquote{border-left:3px solid #18794e;padding:4px 16px;margin:0 0 .8em;color:#4a5750;background:#f0f5f2}
.markdown-body table{border-collapse:collapse;width:100%;margin:0 0 .8em}
.markdown-body th,.markdown-body td{border:1px solid #cdd5cf;padding:8px 12px;text-align:left}
.markdown-body th{background:#edf2ef;font-weight:600}
.markdown-body img{max-width:100%}
.markdown-body a{color:#18794e}
.markdown-body hr{border:none;border-top:1px solid #dde3df;margin:1.2em 0}
.markdown-body .mermaid{background:#fafbfa;padding:12px;border-radius:8px;text-align:center;overflow-x:auto}
.markdown-body .math{display:inline-block}
.markdown-loading{color:#85918b;font-size:13px;padding:20px;text-align:center}
.reading-pane .topic-summary{font-size:15px;color:#4a5750;margin:0 0 18px;padding-bottom:14px;border-bottom:1px solid #dde3df}

/* ── Marking Workspace (描红) ── */
.marking-workspace{margin:0;height:100%}
.marking-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:16px;align-items:start;min-height:500px}

.marking-content-col,.marking-ai-col{min-width:0}.marking-ai-col{order:-1}.marking-saved-score{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px;padding:10px 12px;border-left:3px solid #18794e;background:#f2f7f4}.marking-saved-score span{color:#68756f;font-size:13px}.marking-saved-score strong{color:#12623e}
.socratic-workspace{display:grid;gap:14px;min-width:0;max-width:100%;width:100%;margin:0 auto;overflow:hidden;box-sizing:border-box}.socratic-shell{display:grid;grid-template-columns:minmax(0,180px) minmax(0,1fr);width:100%;min-width:0;max-width:100%;min-height:420px;border:1px solid #dde3df;background:#fff;font-size:14px;box-sizing:border-box;overflow:hidden}.socratic-history{min-width:0;max-width:100%;padding:12px;border-right:1px solid #e0e5e2;background:#f7f9f8;overflow:hidden;box-sizing:border-box}.socratic-history>.panel-head{margin-bottom:12px}.socratic-history-item{width:100%;min-width:0;max-width:100%;display:grid;gap:2px;margin-top:8px;padding:10px;border:1px solid transparent;background:transparent;color:#26352e;text-align:left;box-sizing:border-box;overflow:hidden;overflow-wrap:break-word}.socratic-history-item:hover,.socratic-history-item.active{border-color:#b7c9c0;background:#fff}.socratic-history-item span,.socratic-history-item time{color:#718078;font-size:11px}.socratic-chat{min-width:0;max-width:100%;width:100%;overflow:hidden;display:flex;flex-direction:column;padding:12px 14px;gap:10px;box-sizing:border-box}.socratic-conversation{width:100%;min-width:0;max-width:100%}.socratic-chat-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding-bottom:12px;border-bottom:1px solid #e3e8e5;min-width:0;flex-wrap:wrap}.socratic-chat-head h3{margin:2px 0}.socratic-chat-head>strong{color:#12623e;font-size:20px}.socratic-messages{display:flex;flex:1;min-width:0;max-width:100%;flex-direction:column;gap:10px;padding:10px 0;overflow:auto;overflow-wrap:anywhere}.socratic-message{width:100%;min-width:0;display:grid;gap:8px;align-items:start;box-sizing:border-box;margin-bottom:4px}.socratic-message.assistant{grid-template-columns:32px minmax(0,1fr);max-width:78%}.socratic-message.user{grid-template-columns:minmax(0,1fr) 32px;max-width:78%;margin-left:auto}.socratic-message>span{font-size:12px;font-weight:700;color:#5f6e67;text-align:center;line-height:32px;height:32px;border-radius:50%;background:#e3ebe7}.socratic-message.user>span{background:#d8e8df}.socratic-message p{margin:0;padding:10px 12px;border-left:3px solid #7fa28f;background:#f2f6f4;white-space:pre-wrap;overflow-wrap:break-word;word-break:break-word;min-width:0;max-width:100%;box-sizing:border-box}.socratic-message.user p{border-left:0;border-right:3px solid #18794e;background:#eaf3ee}.socratic-message.user{align-self:flex-end;grid-template-columns:minmax(0,1fr) 40px}.socratic-message.user>span{grid-column:2;grid-row:1}.socratic-message.user p{grid-column:1;grid-row:1;border-left:0;border-right:3px solid #d9ad43;background:#fff8e8}.socratic-composer{display:flex;flex-direction:column;align-items:stretch;width:100%;min-width:0;max-width:100%;gap:10px;padding-top:14px;border-top:1px solid #e3e8e5}.socratic-composer textarea{display:block;min-width:0;max-width:100%;width:100%;resize:vertical;min-height:120px;padding:10px 12px;border:1px solid #ccd3ce;border-radius:5px}.socratic-composer textarea:focus{outline:none;border-color:#23815c;box-shadow:0 0 0 3px #23815c18}.socratic-composer button{align-self:flex-start;min-height:36px;padding:0 18px;white-space:nowrap}.socratic-loading{align-items:center;color:#4b5563}.socratic-loading p{margin:0;font-style:italic;color:#4b5563}.socratic-loading .loading-spinner{display:inline-block;width:14px;height:14px;margin-right:8px;border:2px solid #cdd6d1;border-top-color:#18794e;border-radius:50%;vertical-align:middle;animation:socratic-spin .8s linear infinite}@keyframes socratic-spin{to{transform:rotate(360deg)}}.socratic-overall{margin-top:14px;padding:12px;border-left:3px solid #18794e;background:#f2f7f4;overflow-wrap:break-word;word-break:break-word;min-width:0;max-width:100%}.socratic-overall p{margin:5px 0 0;white-space:pre-wrap}.annotated-content-panel{border-top:1px solid #dde3df;padding-top:16px}.annotated-content-panel>.panel-head{margin-bottom:10px}
.socratic-message-body{min-width:0;max-width:100%;padding:10px 12px;border-left:3px solid #7fa28f;background:#f2f6f4;overflow-wrap:anywhere;word-break:break-word}.socratic-message-body .markdown-body>*:first-child,.socratic-overall .markdown-body>*:first-child{margin-top:0}.socratic-message-body .markdown-body>*:last-child,.socratic-overall .markdown-body>*:last-child{margin-bottom:0}.socratic-composer-actions{display:flex;flex-wrap:wrap;gap:10px;min-width:0;max-width:100%}.critique-round{display:grid;gap:8px;padding:10px 0 2px}.critique-round>div:first-child{display:flex;justify-content:space-between;gap:12px;color:#4f5e56;font-size:12px}.critique-round progress{width:100%;height:8px;accent-color:#18794e}.critique-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(48px,1fr));gap:6px}.critique-steps span{padding:4px;text-align:center;background:#edf1ef;color:#718078;font-size:11px}.critique-steps span.done{background:#e0f1e8;color:#12623e}.critique-steps span.active{outline:2px solid #d9ad43;outline-offset:-2px;background:#fff8e8;color:#704f08;font-weight:700}.critique-radar{display:grid;grid-template-columns:repeat(auto-fit,minmax(105px,1fr));gap:10px;margin-top:14px}.critique-radar>div{min-width:0;padding:10px 12px;border:1px solid #dfe5e1;background:#f8faf9}.critique-radar span{display:block;color:#68756f;font-size:12px;overflow-wrap:anywhere}.critique-radar strong{display:block;margin-top:3px;color:#12623e;font-size:20px}
@media(max-width:760px){.socratic-shell{grid-template-columns:1fr}.socratic-history{border-right:0;border-bottom:1px solid #e0e5e2}.socratic-chat{padding:12px}.socratic-message{max-width:100%}.socratic-composer{grid-template-columns:1fr}.socratic-composer button{width:100%;min-height:44px}.critique-radar{grid-template-columns:1fr}}
.critical-workshop{display:grid;gap:14px;min-width:0;max-width:100%;overflow:hidden}.critical-history{display:flex;align-items:flex-start;gap:14px;padding:12px 0;border-top:1px solid #dde3df;border-bottom:1px solid #dde3df;min-width:0}.critical-history>div:first-child{display:grid;gap:3px;flex:0 0 88px}.critical-history>div:first-child span{color:#68756f;font-size:12px}.critical-history-list{display:flex;gap:8px;min-width:0;overflow-x:auto;padding-bottom:2px}.critical-history-list button{display:grid;gap:2px;flex:0 0 150px;padding:8px 10px;border:1px solid #d9e0dc;background:#fff;color:#26352e;text-align:left}.critical-history-list button.active{border-color:#18794e;background:#edf7f1}.critical-history-list span,.critical-history-list time{color:#68756f;font-size:11px;overflow:hidden;text-overflow:ellipsis}.critical-layout{display:grid;grid-template-columns:minmax(260px,34%) minmax(0,1fr);border:1px solid #dde3df;background:#fff;min-height:520px}.critical-coach,.critical-practice{min-width:0;padding:18px;box-sizing:border-box}.critical-coach{border-right:1px solid #dde3df;background:#f7f9f8;overflow-wrap:anywhere}.critical-coach h3{margin:3px 0 14px}.critical-coach .markdown-body{font-size:13px}.critical-feedback,.critical-hint{margin-top:16px;padding:12px;border-left:3px solid #b87912;background:#fff8e8}.critical-feedback.accepted{border-left-color:#18794e;background:#edf7f1}.critical-feedback>strong,.critical-hint>strong{display:block;margin-bottom:6px}.critical-feedback pre,.critical-saved-steps pre{max-width:100%;max-height:180px;overflow:auto;padding:8px;background:#fff;font-size:11px;white-space:pre-wrap}.critical-saved-steps{display:grid;gap:7px;margin-top:16px}.critical-saved-steps details{padding:7px 0;border-top:1px solid #dfe5e1}.critical-saved-steps summary{cursor:pointer;font-size:12px;font-weight:600}.critical-progress{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;margin-bottom:22px}.critical-progress>div{display:grid;grid-template-columns:28px minmax(0,1fr);align-items:center;gap:6px;padding:7px;background:#edf1ef;color:#66736d;min-width:0}.critical-progress span{display:grid;place-items:center;width:26px;height:26px;border:1px solid #b8c3bd;border-radius:50%;font-weight:700}.critical-progress small{font-size:11px;line-height:1.25;overflow-wrap:anywhere}.critical-progress>div.done{background:#e2f2e9;color:#12623e}.critical-progress>div.active{outline:2px solid #d9ad43;outline-offset:-2px;background:#fff8e8;color:#704f08}.critical-step-form{display:grid;gap:10px;max-width:760px}.critical-step-form h3{margin:0 0 8px}.critical-step-form label{font-size:13px;font-weight:600;color:#46534c}.critical-step-form textarea,.critical-step-form select{display:block;width:100%;min-width:0;max-width:100%;box-sizing:border-box;padding:10px 12px;border:1px solid #cbd4cf;border-radius:5px;background:#fff;font:inherit;resize:vertical}.critical-step-form textarea:focus,.critical-step-form select:focus{outline:none;border-color:#18794e;box-shadow:0 0 0 3px #18794e16}.critical-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:6px}.critical-generating{display:flex;align-items:center;gap:10px;margin-top:12px;padding:12px;border-left:3px solid #18794e;background:#edf7f1;color:#34473e}.critical-generating .loading-spinner{display:inline-block;flex:0 0 auto;width:18px;height:18px;border:2px solid #cdd6d1;border-top-color:#18794e;border-radius:50%;animation:socratic-spin .8s linear infinite}.critical-generating p{margin:3px 0 0;color:#68756f;font-size:13px}.critical-report>.panel-head{padding-bottom:12px;border-bottom:1px solid #dde3df}.critical-report>.panel-head>div{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.critical-report>.panel-head strong{color:#12623e;font-size:20px}.critical-dimensions{display:grid;grid-template-columns:repeat(auto-fit,minmax(115px,1fr));gap:8px;margin-top:16px}.critical-dimensions>div{padding:10px;border:1px solid #dfe5e1;background:#f7f9f8}.critical-dimensions span{display:block;color:#68756f;font-size:12px}.critical-dimensions strong{display:block;margin-top:3px;color:#12623e;font-size:20px}
@media(max-width:900px){.critical-layout{grid-template-columns:1fr}.critical-coach{border-right:0;border-bottom:1px solid #dde3df}.critical-progress{grid-template-columns:1fr}.critical-progress>div{grid-template-columns:32px 1fr}.critical-actions button{min-height:44px;flex:1}}
.concept-map-workspace{display:grid;gap:14px;min-width:0;max-width:100%;overflow:hidden}.concept-map-history{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-top:1px solid #dde3df;border-bottom:1px solid #dde3df;min-width:0}.concept-map-history>div{display:flex;gap:8px;min-width:0;overflow-x:auto}.concept-map-history button{display:grid;gap:2px;flex:0 0 145px;padding:8px 10px;border:1px solid #d9e0dc;background:#fff;text-align:left}.concept-map-history small,.concept-map-history time{font-size:11px;color:#68756f;overflow:hidden;text-overflow:ellipsis}.concept-map-start{gap:10px}.concept-map-start select{height:36px;border:1px solid #cbd4cf;background:#fff}.concept-map-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,34%);gap:16px;align-items:start;min-width:0;max-width:100%}.concept-map-editor,.concept-map-coach{min-width:0;max-width:100%;box-sizing:border-box;border:1px solid #dde3df;background:#fff;padding:16px;overflow:hidden}.concept-map-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;border-bottom:1px solid #e3e8e5;padding-bottom:12px;min-width:0}.concept-map-head h3{margin:2px 0}.concept-map-head-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap;min-width:0}.concept-map-head-actions>span{color:#12623e;font-size:12px;background:#edf7f1;padding:4px 8px}.concept-map-head-actions button{white-space:nowrap}.concept-map-stages{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;margin:14px 0}.concept-map-stages span{min-width:0;padding:7px;background:#edf1ef;color:#66736d;text-align:center;font-size:12px;overflow-wrap:anywhere}.concept-map-stages span.active{outline:2px solid #d9ad43;outline-offset:-2px;background:#fff8e8;color:#704f08}.concept-map-stages span.done{background:#e2f2e9;color:#12623e}.concept-map-sources{display:grid;gap:8px;margin-bottom:14px;padding:12px;background:#f7f9f8;border:1px solid #e0e5e2}.concept-map-sources h4{margin:0;font-size:13px}.concept-map-sources>div{display:flex;flex-wrap:wrap;gap:7px;min-width:0}.source-chip{display:inline-grid;grid-template-columns:auto minmax(0,auto);gap:4px 6px;max-width:100%;padding:5px 8px;background:#fff;border:1px solid #dfe5e1;font-size:12px}.source-chip strong{color:#12623e}.source-chip small{grid-column:1/-1;color:#68756f;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.concept-map-node-tools,.concept-edge-form{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;margin:12px 0}.concept-edge-form{grid-template-columns:minmax(0,1fr) minmax(0,1.2fr) minmax(0,1fr) auto}.concept-map-node-tools input,.concept-edge-form input,.concept-edge-form select,.concept-node-card select,.concept-explanation,.concept-coach-composer textarea{width:100%;min-width:0;max-width:100%;box-sizing:border-box;border:1px solid #cbd4cf;border-radius:5px;background:#fff;padding:9px 10px;font:inherit}.concept-node-list{display:grid;gap:8px;min-width:0}.concept-node-card{display:grid;gap:7px;min-width:0;padding:11px;border:1px solid #dfe5e1;background:#fff}.concept-node-card.confirmed{border-left:3px solid #18794e}.concept-node-card.excluded{opacity:.72;background:#f7f7f7}.concept-node-card>div:first-child{display:flex;align-items:center;justify-content:space-between;gap:10px;min-width:0}.concept-node-card strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.concept-node-card span{color:#68756f;font-size:12px}.concept-node-card p{margin:0;color:#68756f;font-size:12px;overflow-wrap:anywhere}.concept-node-actions{display:flex;flex-wrap:wrap;gap:7px}.concept-node-actions button{font-size:12px;padding:5px 8px}.concept-edge-list{display:grid;gap:6px;margin-top:12px}.concept-edge-list p{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:0;padding:8px 10px;background:#f7f9f8;border:1px solid #e0e5e2}.concept-edge-list span{color:#704f08;background:#fff8e8;padding:2px 6px}.concept-explanation{margin-top:12px;resize:vertical}.concept-mermaid{max-width:100%;overflow:auto;background:#f7f9f8;border:1px solid #e0e5e2;padding:12px;white-space:pre-wrap}.concept-map-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.concept-map-coach{display:flex;flex-direction:column;gap:12px;max-height:760px}.concept-coach-messages{display:flex;flex-direction:column;gap:9px;min-width:0;overflow:auto}.coach-message{max-width:100%;padding:10px 12px;border-left:3px solid #7fa28f;background:#f2f6f4;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word}.coach-message.user{border-left:0;border-right:3px solid #d9ad43;background:#fff8e8}.concept-coach-composer{display:flex;flex-direction:column;gap:10px;min-width:0;max-width:100%;border-top:1px solid #e3e8e5;padding-top:12px}.concept-coach-composer textarea{display:block;resize:vertical;min-height:118px}.concept-coach-composer button{align-self:flex-start}
@media(max-width:980px){.concept-map-layout{grid-template-columns:1fr}.concept-map-coach{max-height:none}.concept-edge-form{grid-template-columns:1fr}.concept-map-stages{grid-template-columns:1fr}.concept-map-node-tools{grid-template-columns:1fr}.concept-map-node-tools button,.concept-edge-form button,.concept-coach-composer button,.concept-map-actions button{width:100%;min-height:44px}}
.critical-workshop-toolbar{display:flex;align-items:center;justify-content:flex-end;gap:12px;flex-wrap:wrap;padding:9px 12px;border:1px solid #dfe5e1;background:#f7f9f8}.critical-workshop-toolbar span{margin-right:auto;color:#68756f;font-size:12px}.critical-history .critical-history-summary{display:flex;flex:0 0 168px;flex-direction:column;align-items:stretch;gap:5px}.critical-history-summary button{margin-top:3px;padding:5px 7px;font-size:12px;white-space:nowrap}
.source-chip-wrap{display:flex;max-width:100%}.source-chip{cursor:grab;text-align:left}.source-chip:hover{border-color:#18794e;background:#edf7f1}.source-to-coach{border:1px solid #dfe5e1;border-left:0;background:#fff;color:#12623e;font-size:11px;padding:4px 7px}.concept-action-help{margin:0;padding:8px 10px;border-left:3px solid #d9ad43;background:#fff8e8;color:#5f563f;font-size:12px}
.concept-graph-section{display:grid;gap:8px;margin-top:14px;min-width:0}.concept-graph-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.concept-graph-head span{color:#68756f;font-size:12px}.concept-graph-canvas{position:relative;width:680px;height:420px;max-width:none;overflow:hidden;border:1px solid #cfd8d3;background-color:#fbfcfb;background-image:linear-gradient(#e9eeeb 1px,transparent 1px),linear-gradient(90deg,#e9eeeb 1px,transparent 1px);background-size:20px 20px}.concept-graph-section{overflow-x:auto}.concept-graph-lines{position:absolute;inset:0;width:680px;height:420px;pointer-events:none}.concept-graph-lines line{stroke:#7b8f84;stroke-width:2}.concept-graph-lines text{fill:#704f08;font-size:11px;text-anchor:middle;paint-order:stroke;stroke:#fff;stroke-width:4px}.concept-graph-node{position:absolute;transform:translate(-50%,-50%);max-width:128px;min-width:82px;min-height:38px;padding:7px 9px;border:1px solid #7fa28f;background:#fff;color:#26352e;box-shadow:0 1px 4px #25352d1a;cursor:grab;overflow:hidden;text-overflow:ellipsis}.concept-graph-node.core{border:2px solid #18794e;background:#eaf5ef;font-weight:700}.concept-graph-node.selected-from{outline:3px solid #d9ad43}.concept-graph-node.selected-to{outline:3px solid #3b82f6}.concept-edge-phrases{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin:-4px 0 12px}.concept-edge-phrases span,.concept-stage-requirement{color:#68756f;font-size:12px}.concept-edge-phrases button{padding:4px 8px;border:1px solid #d5ddd8;background:#f7f9f8;color:#34473e;font-size:12px}.concept-edge-phrases button:hover{border-color:#18794e;background:#edf7f1}.concept-stage-requirement{flex:1 1 100%;padding:8px 10px;background:#fff8e8;border-left:3px solid #d9ad43}
@media(max-width:760px){.critical-workshop-toolbar button{width:100%;min-height:44px}.concept-graph-section{margin-left:-4px;margin-right:-4px}}
.marking-col-title{font-size:14px;font-weight:600;color:#4a5750;margin:0 0 10px;padding-bottom:8px;border-bottom:1px solid #e5e9e7}
.marking-content{position:relative;padding:0;min-height:200px}
.marking-content mark[data-marked]{border-radius:2px;padding:0 2px}
mark.marking-concept{background:#dbeafe;border-bottom:2px solid #3b82f6;color:inherit}
mark.marking-keyword{background:#dcfce7;border-bottom:2px solid #22c55e;color:inherit}
mark.marking-formula{background:#f3e8ff;border-bottom:2px solid #a855f7;color:inherit}

/* Floating toolbar */
.marking-toolbar{position:fixed;z-index:1000;transform:translate(-50%,-100%);background:#fff;border:1px solid #ccd3ce;border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,.12);padding:10px 12px;min-width:220px;max-width:320px}
.toolbar-selected{font-size:12px;color:#66736d;margin-bottom:8px;line-height:1.3;max-height:40px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-style:italic}
.toolbar-buttons{display:flex;gap:6px;flex-wrap:wrap}
.mark-btn{border:1px solid #ccd3ce;border-radius:5px;padding:5px 12px;font-size:12px;font-weight:600;background:#fff;transition:all .12s}
.mark-btn:hover{transform:translateY(-1px);box-shadow:0 2px 6px rgba(0,0,0,.1)}
.concept-btn{color:#2563eb;border-color:#93c5fd}.concept-btn:hover{background:#dbeafe}
.keyword-btn{color:#16a34a;border-color:#86efac}.keyword-btn:hover{background:#dcfce7}
.formula-btn{color:#9333ea;border-color:#d8b4fe}.formula-btn:hover{background:#f3e8ff}
.cancel-btn{color:#9ca3af;border-color:#e5e7eb;font-size:11px;padding:5px 8px}
.toolbar-reason{margin-top:8px;width:100%;border:1px solid #e5e9e7;border-radius:4px;padding:6px 8px;font-size:12px;outline:none}
.toolbar-reason:focus{border-color:#18794e}

/* Round bar */
.marking-round-bar{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.round-label{font-size:14px;font-weight:700;color:#1d2923}

/* Marked items panel */
.marked-items-panel{border:1px solid #e5e9e7;border-radius:8px;background:#fafbfa;overflow:hidden;margin-bottom:16px}
.marked-section{padding:10px 14px;border-bottom:1px solid #eef1ef}
.marked-section:last-child{border-bottom:none}
.marked-section-title{font-size:13px;font-weight:600;color:#3d4842;margin:0 0 8px;display:flex;align-items:center;gap:6px}
.mark-dot{display:inline-block;width:8px;height:8px;border-radius:50%}
.mark-dot.concept-mark{background:#3b82f6}
.mark-dot.keyword-mark{background:#22c55e}
.mark-dot.formula-mark{background:#a855f7}
.mark-count{font-weight:400;color:#9ca3af;font-size:12px}
.marked-chips{display:flex;flex-wrap:wrap;gap:5px}
.marked-chip{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:14px;font-size:12px;line-height:1.4}
.marked-chip.concept-mark{background:#dbeafe;color:#1e40af}
.marked-chip.keyword-mark{background:#dcfce7;color:#166534}
.marked-chip.formula-mark{background:#f3e8ff;color:#6b21a8}
.chip-reason{font-size:11px;opacity:.7}
.chip-remove{border:none;background:none;color:inherit;opacity:.5;font-size:14px;font-weight:700;padding:0 2px;line-height:1;cursor:pointer}
.chip-remove:hover{opacity:1}

/* AI tabs */
.ai-tab-bar{display:flex;gap:0;border-bottom:2px solid #e5e9e7;margin-bottom:12px}
.ai-tab-bar button{border:0;background:transparent;color:#66736d;padding:8px 14px;font-size:13px;border-bottom:2px solid transparent;margin-bottom:-2px;transition:color .15s,border-color .15s}
.ai-tab-bar button:hover{color:#1d2923}
.ai-tab-bar button.active{color:#18794e;border-bottom-color:#18794e;font-weight:600}
.ai-tab-content{min-height:120px}
.ai-panel-inner{display:flex;flex-direction:column;gap:10px}
.ai-input{width:100%;border:1px solid #ccd3ce;border-radius:6px;padding:10px 12px;font-size:14px;font-family:inherit;resize:vertical;min-height:60px;background:#fff}
.ai-input:focus{border-color:#18794e;outline:none;box-shadow:0 0 0 3px #23815c12}
.ai-feedback{margin-top:8px;padding:14px;background:#fff;border:1px solid #e5e9e7;border-radius:8px;font-size:13px;line-height:1.6;overflow-wrap:break-word;max-height:360px;overflow-y:auto}
.ai-feedback h1,.ai-feedback h2,.ai-feedback h3{font-size:1.05em;margin:.5em 0 .25em}
.ai-feedback p{margin:0 0 .4em}
.ai-feedback ul,.ai-feedback ol{padding-left:1.3em;margin:.3em 0}
.ai-feedback code{background:#e4ece7;padding:1px 4px;border-radius:3px;font-size:.9em}
.ai-feedback pre{background:#1e1e1e;color:#d4d4d4;padding:10px 14px;border-radius:6px;overflow-x:auto;font-size:12px}
.full-width{width:100%}

/* Keep the critical-learning workspace inside the course content column. */
.task-specialized-tools,.task-specialized-tool{width:100%;min-width:0;max-width:100%;box-sizing:border-box;overflow:hidden}
.memory-head,.memory-controls{display:flex;align-items:flex-end;justify-content:space-between;gap:14px}.memory-head h3{margin:2px 0 0}.memory-controls{margin:16px 0;justify-content:flex-start}.memory-controls label,.memory-plan{display:flex;min-width:0;flex-direction:column;gap:6px}.memory-controls select{min-width:180px}.memory-plan textarea{width:100%;box-sizing:border-box;resize:vertical}.memory-submit{justify-content:flex-end;margin-top:12px}
.critical-workshop,.critical-history,.critical-layout{width:100%;min-width:0;max-width:100%;box-sizing:border-box}
.critical-history{overflow:hidden}
.critical-history-list{flex:1 1 auto;min-width:0;max-width:100%;overflow-x:auto}
.critical-layout{grid-template-columns:minmax(220px,32%) minmax(0,1fr);overflow:hidden}
.critical-coach,.critical-practice{width:auto;min-width:0;max-width:100%;box-sizing:border-box;overflow:hidden}
.critical-practice>*{min-width:0;max-width:100%;box-sizing:border-box}
.critical-practice .markdown-body,.critical-coach .markdown-body{min-width:0;max-width:100%;overflow-wrap:anywhere}
.critical-practice .markdown-body pre,.critical-coach .markdown-body pre,.critical-practice .markdown-body table,.critical-coach .markdown-body table{display:block;max-width:100%;overflow:auto}
.critical-practice textarea,.critical-practice input,.critical-practice select{min-width:0;max-width:100%}
@media(max-width:900px){.critical-layout{grid-template-columns:minmax(0,1fr)}.critical-progress>div{grid-template-columns:32px minmax(0,1fr)}.critical-actions button{flex:1 1 160px;max-width:100%}}

/* Concept-map canvas interaction */
.source-chip.in-map{border-color:#18794e;background:#eaf5ef;box-shadow:inset 0 0 0 1px #18794e}.source-chip.excluded{opacity:.55;text-decoration:line-through}
.concept-link-toolbar{display:grid;gap:10px;margin:0 0 10px;padding:12px;border:1px solid #cfdad4;background:#f7f9f8}.concept-link-toolbar>div:first-child{display:flex;align-items:center;justify-content:space-between;gap:10px}.concept-link-toolbar>div:first-child span{color:#12623e;font-size:12px}.concept-link-toolbar input{width:100%;min-width:0;max-width:100%;padding:8px 10px}.concept-link-toolbar .concept-edge-phrases{margin:0}.concept-edge-phrases button.active,.concept-edge-phrases button[aria-checked="true"]{border-color:#18794e;background:#18794e;color:#fff}
.concept-graph-section{margin-top:0}.concept-graph-node{padding:0;overflow:visible}.concept-graph-node.selected{z-index:5;outline:3px solid #d9ad43;outline-offset:3px}.concept-graph-node-label{display:block;width:100%;min-height:36px;border:0;background:transparent;color:inherit;padding:7px 9px;font:inherit;font-weight:inherit;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.concept-link-handle{position:absolute;z-index:3;display:grid;width:26px;height:26px;place-items:center;border:2px solid #fff;border-radius:50%;background:#18794e;color:#fff;box-shadow:0 1px 5px #17352b55;font-size:15px;font-weight:700;line-height:1;cursor:crosshair;padding:0}.concept-link-handle:hover{background:#12623e;transform:scale(1.08)}.concept-link-handle.north{left:50%;top:-17px;transform:translateX(-50%)}.concept-link-handle.east{right:-17px;top:50%;transform:translateY(-50%)}.concept-link-handle.south{left:50%;bottom:-17px;transform:translateX(-50%)}.concept-link-handle.west{left:-17px;top:50%;transform:translateY(-50%)}
.concept-graph-empty{position:absolute;inset:0;display:grid;place-items:center;color:#718078;font-size:13px;pointer-events:none}.concept-node-inspector{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:10px;padding:10px 12px;border:1px solid #d9e0dc;background:#f7f9f8}.concept-node-inspector>div:first-child{display:grid;grid-template-columns:auto auto;gap:1px 8px;margin-right:auto}.concept-node-inspector>div:first-child span{grid-column:1/-1;color:#68756f;font-size:11px}.concept-node-inspector>div:first-child small{color:#12623e}.concept-node-inspector label{min-width:180px}.concept-node-inspector select{width:100%;min-width:0;padding:7px 9px;border:1px solid #cbd4cf;background:#fff}.concept-node-inspector .danger{color:#9b332d;border-color:#e2bbb8;background:#fff7f6}
@media(max-width:760px){.concept-node-inspector{align-items:stretch}.concept-node-inspector>div:first-child,.concept-node-inspector button,.concept-node-inspector label{width:100%;margin-right:0}.concept-link-toolbar>div:first-child{align-items:flex-start;flex-direction:column}}
/* Mindmap SVG canvas — Round 5.5 */
.mindmap-shell{display:flex;flex-direction:column;height:100%;min-height:520px;background:#f7f9f8;border:1px solid #d4dad6;border-radius:7px;overflow:hidden;box-sizing:border-box;width:100%}
.mindmap-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 14px;background:#fff;border-bottom:1px solid #e3e8e5;flex-wrap:wrap}
.mindmap-toolbar-left{display:flex;align-items:center;gap:6px}
.mindmap-toolbar-right{display:flex;align-items:center;gap:8px;min-width:0}
.mindmap-toolbar-right select{max-width:160px;padding:6px 8px;border:1px solid #cbd4cf;border-radius:5px;background:#fff;color:#2f3d35;font-size:13px}
.mindmap-toolbar button{padding:6px 11px;border:1px solid #c7d1cc;border-radius:5px;background:#fff;font-size:13px;color:#2f3d35;white-space:nowrap}
.mindmap-toolbar button:hover{background:#edf2ef}
.mindmap-toolbar button:disabled{opacity:.45;cursor:not-allowed}
.mindmap-btn-primary{background:#18794e!important;color:#fff!important;border-color:#18794e!important}
.mindmap-btn-primary:hover{background:#12623e!important}
.mindmap-sep{width:1px;height:22px;background:#d4dbd6;margin:0 4px}
.mindmap-note-input{width:200px;padding:6px 9px;border:1px solid #cbd4cf;border-radius:5px;font-size:13px;min-width:0}
.mindmap-hints-drawer{background:#fffbeb;border-bottom:1px solid #f0e4ba;padding:12px 16px}
.mindmap-hints-header{display:flex;align-items:center;justify-content:space-between;font-weight:650;color:#7a6e28;margin-bottom:8px}
.mindmap-hints-list{list-style:none;padding:0;margin:0}
.mindmap-hint-item{padding:5px 0;color:#5a5020;font-size:13px;line-height:1.5}
.mindmap-hint-item:before{content:"▸ ";color:#b8a448}
.mindmap-main{flex:1;position:relative;min-height:0;overflow:hidden}
.mindmap-canvas{width:100%;height:100%;cursor:default;user-select:none}
.mindmap-node{cursor:grab}
.mindmap-node:active{cursor:grabbing}
.mindmap-node:hover rect{filter:brightness(.96)}
.mindmap-node rect{transition:filter .1s}
.mindmap-node-selected rect{stroke:#18794e!important;stroke-width:2!important;filter:brightness(.94)}
.mindmap-node-root rect{stroke-width:2}
.mindmap-node-edit{width:100%;height:28px;box-sizing:border-box;padding:2px 8px;border:2px solid #18794e;border-radius:4px;background:#fff;font-size:12px;outline:none}
.mindmap-context-menu{position:fixed;z-index:30;background:#fff;border:1px solid #d0d8d3;border-radius:6px;box-shadow:0 4px 16px #1a2e2544;padding:4px 0;min-width:140px}
.mindmap-context-menu button{display:block;width:100%;padding:7px 14px;border:0;background:transparent;text-align:left;font-size:13px;color:#2f3d35;white-space:nowrap}
.mindmap-context-menu button:hover{background:#edf2ef}
.mindmap-ctx-danger{color:#9b332d!important}
.mindmap-loading{display:grid;place-items:center;height:100%;color:#68756f;gap:12px}
.mindmap-spinner{width:32px;height:32px;border:3px solid #e3e8e5;border-top-color:#18794e;border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.mindmap-score-card{padding:24px 32px;background:#fff;height:100%;overflow-y:auto}
.mindmap-completed-result{height:100%;overflow-y:auto;background:#fff}
.mindmap-completed-result .mindmap-score-card{height:auto;overflow:visible}
.mindmap-result-graph{padding:0 32px 28px}
.mindmap-result-graph h3{margin:0 0 12px;font-size:16px}
.mindmap-result-canvas{display:block;width:100%;height:clamp(320px,52vh,520px);border:1px solid #d9e2dc;background:#f8fbf9}
.mindmap-score-card h2{margin:0 0 8px;font-size:20px}
.mindmap-restart{float:right;margin-top:-34px;padding:7px 12px;border:1px solid #18794e;border-radius:5px;background:#fff;color:#18794e;font-weight:650}
.mindmap-score-total{font-size:56px;color:#18794e;font-weight:700;letter-spacing:-1px}
.mindmap-score-total span{font-size:18px;color:#7b8781;font-weight:400;margin-left:4px}
.mindmap-radar-bar{margin:20px 0;display:flex;flex-direction:column;gap:14px}
.mindmap-radar-item{display:flex;align-items:center;gap:10px}
.mindmap-radar-item label{width:80px;flex-shrink:0;font-size:13px;font-weight:600;color:#506158}
.mindmap-radar-item span{width:36px;text-align:right;font-size:13px;color:#506158;font-weight:650}
.mindmap-radar-track{flex:1;height:10px;background:#edf2ef;border-radius:5px;overflow:hidden}
.mindmap-radar-fill{height:100%;background:#18794e;border-radius:5px;transition:width .4s}
.mindmap-feedback{margin-top:16px}
.mindmap-feedback .markdown-body{font-size:14px}
.mindmap-error{position:absolute;bottom:12px;left:12px;right:12px;background:#fff0ef;border:1px solid #e6c4c2;border-radius:5px;padding:10px 14px;display:flex;align-items:center;justify-content:space-between;color:#8f2925;font-size:13px}
@media(max-width:820px){.mindmap-toolbar{align-items:flex-start;gap:8px;padding:8px 10px}.mindmap-note-input{width:100%}.mindmap-toolbar-left,.mindmap-toolbar-right{width:100%;gap:4px;flex-wrap:wrap}.mindmap-toolbar-right select{flex:1;min-width:120px;max-width:none}.mindmap-toolbar button{padding:5px 9px;font-size:12px}}
 .course-agent-panel{min-width:0;max-width:100%;overflow:hidden}.course-agent-layout{display:grid;grid-template-columns:190px minmax(0,1fr);gap:16px;margin-top:18px;min-width:0}.course-agent-sessions{display:flex;flex-direction:column;gap:8px;min-width:0}.course-agent-session{border:1px solid #dde3df;background:#fff;color:#26352e;padding:10px;text-align:left;border-radius:4px;overflow-wrap:anywhere}.course-agent-session.active{border-color:#18794e;background:#eef6f1}.course-agent-stream{display:flex;flex-direction:column;min-width:0;max-width:100%;background:#fff;border:1px solid #dde3df}.course-agent-records{min-width:0;max-width:100%;padding:16px;min-height:420px;overflow:hidden}.course-agent-turn{border-bottom:1px solid #edf0ee;padding:4px 0 16px;margin-bottom:16px;min-width:0}.course-agent-user,.course-agent-assistant{display:grid;grid-template-columns:36px minmax(0,1fr);gap:10px;align-items:start;margin:10px 0;min-width:0}.course-agent-user{grid-template-columns:36px minmax(0,1fr)}.course-agent-user strong,.course-agent-assistant strong{color:#52635a;font-size:12px;padding-top:10px}.course-agent-user p,.course-agent-assistant p{margin:0;padding:10px 12px;overflow-wrap:anywhere;word-break:break-word;min-width:0;max-width:100%}.course-agent-user p{border-right:3px solid #d9ad43;background:#fff8e8}.course-agent-assistant>div{border-left:3px solid #7fa28f;background:#f2f6f4;padding:10px 12px;min-width:0;max-width:100%;overflow-wrap:anywhere}.course-agent-assistant .markdown-body{font-size:14px}.course-agent-assistant .markdown-body>*:first-child{margin-top:0}.course-agent-assistant .markdown-body>*:last-child{margin-bottom:0}.course-agent-assistant small{display:block;color:#718078;margin-top:5px}.course-agent-response-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.course-agent-response-actions button{min-height:32px}.course-agent-pending{color:#66736d;font-size:13px;margin:8px 0}.course-agent-composer{border-top:1px solid #e3e8e5;padding:12px 16px;min-width:0;max-width:100%}.course-agent-composer textarea{display:block;width:100%;min-width:0;max-width:100%;min-height:92px;resize:vertical}.course-agent-actions{display:flex;align-items:center;justify-content:flex-end;gap:10px;margin-top:8px;min-width:0}@media(max-width:820px){.course-agent-layout{grid-template-columns:1fr}.course-agent-sessions{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr))}.course-agent-sessions>.panel-head,.course-agent-sessions>.secondary{grid-column:1/-1}.course-agent-records{padding:12px;min-height:300px}.course-agent-composer{padding:12px}.course-agent-actions{justify-content:space-between}.course-agent-actions button{min-height:44px;min-width:88px}}
.course-agent-learning-state{margin:10px 0;padding:8px 10px;border-left:3px solid #5d7fff;background:#eef4ff;color:#405bb2;font-size:13px;overflow-wrap:anywhere}
.course-agent-session{display:flex;flex-direction:column;align-items:flex-start;gap:3px;text-align:left}.course-agent-session time{font-size:11px;color:#77808f}
.course-agent-confirmation{margin:10px 0;padding:12px;border:1px solid #d7dfda;background:#f7faf8}.course-agent-confirmation p{margin:5px 0 10px}.course-agent-confirmation>div{display:flex;gap:8px;flex-wrap:wrap}
.activity-qr-panel .qr-frame{width:min(300px,80vw);padding:14px;margin:12px auto}.activity-qr-panel .qr-grid{image-rendering:pixelated}.attendance-student-status{display:inline-block;margin-top:8px;padding:4px 8px;border-radius:4px;background:#e8f5ed;color:#17633f;font-size:13px;font-weight:650}.attendance-scan-link{display:inline-block;margin-left:8px;color:#b45309;font-weight:700}
.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.attendance-camera-panel{display:grid;gap:10px;max-width:360px;margin:12px 0;padding:12px;border:1px solid #d9e2dc;background:#f7faf8}.attendance-camera-panel video{display:block;width:100%;height:auto;background:#17211c}