@import"https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Mono:wght@500;600&family=Inter:wght@400;500;600;700;800&display=swap";:root{--brand-bg: #FBF3DE;--brand-panel: #FFFFFF;--brand-panel-2: #FCF3DC;--brand-panel-3: #F5E4BC;--brand-border: #E4D2A0;--brand-ink: #3F2A1D;--brand-ink-dark: #2E1F15;--brand-muted: #8A7358;--brand-muted-2: #B49B76;--brand-bonds: #4E7FA8;--brand-commodities: #EDA743;--brand-commodities-dark: #8A5A12;--brand-usd: #5F8E54;--brand-stocks: #C0503A;--brand-stocks-dark: #A43F2D;--brand-neutral: #A98F65;--brand-confirm: #5F8E54;--brand-diverge: #C0503A;--brand-ai: #8B6FA6;--brand-crisis-energy: #B84A3D;--brand-crisis-food: #B8912E;--brand-crisis-trade: #3D8C82;--brand-ink-rgb: 63, 42, 29;--brand-ai-rgb: 139, 111, 166;--brand-confirm-rgb: 95, 142, 84;--brand-diverge-rgb: 192, 80, 58;--brand-commodities-rgb: 237, 167, 67;--brand-bonds-rgb: 78, 127, 168;--brand-border-rgb: 228, 210, 160;--font-heading: "Space Grotesk", system-ui, 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8px;border-radius:var(--radius-pill)}.role-admin{background:rgba(var(--brand-ai-rgb),.16);color:var(--accent2)}.role-ta{background:rgba(var(--brand-bonds-rgb),.14);color:var(--blue)}.role-inst{background:rgba(var(--brand-confirm-rgb),.14);color:var(--green)}.role-student{background:rgba(var(--brand-ink-rgb),.08);color:var(--text2)}.toast-stack{position:fixed;top:16px;right:16px;z-index:60;display:flex;flex-direction:column;gap:8px;width:320px;max-width:90vw}.toast{background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--radius-sm);padding:12px 14px;box-shadow:0 8px 24px rgba(var(--brand-ink-rgb),.18);animation:pop-in .15s ease;font-size:12px}.toast-success{border-left-color:var(--green)}.toast-error{border-left-color:var(--red)}.toast-title{font-weight:700;color:var(--white);margin-bottom:2px}.toast-desc{color:var(--text2)}.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.text-center{text-align:center}.mt-8{margin-top:8px}.mt-16{margin-top:16px}.flex{display:flex}.gap-8{gap:8px}.items-center{align-items:center}.justify-between{justify-content:space-between}.greeting{font-size:20px;font-weight:800;color:var(--white);margin-bottom:4px}.greeting-sub{font-size:13px;color:var(--text2);margin-bottom:20px}.leaderboard-row{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--radius-sm);border-bottom:1px solid var(--border)}.leaderboard-row:last-child{border-bottom:none}.leaderboard-row.self{background:rgba(var(--brand-ai-rgb),.1);border:1px solid rgba(var(--brand-ai-rgb),.3)}.rank-badge{width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;flex-shrink:0;background:var(--surface2);color:var(--text2)}.rank-badge.top1{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:var(--brand-ink-dark)}.rank-badge.top2{background:linear-gradient(135deg,#cbd5e1,#94a3b8);color:var(--brand-ink-dark)}.rank-badge.top3{background:linear-gradient(135deg,#f0a878,#c2410c);color:var(--brand-ink-dark)}.module-card{margin-bottom:14px}.module-card-header{display:flex;align-items:center;gap:10px;margin-bottom:4px}.module-card-title{font-size:13px;font-weight:700;color:var(--white)}.module-card.locked{opacity:.55}.lock-note{font-size:11px;color:var(--text3);display:flex;align-items:center;gap:6px;margin-top:4px;margin-bottom:10px}.lesson-row{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--border);font-size:12px}.lesson-row:last-child{border-bottom:none}.lesson-row-title{flex:1;color:var(--text);font-weight:500}.lesson-row-date{color:var(--text2);font-size:11px;white-space:nowrap}.video-card{border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--border);margin-bottom:10px}.video-thumb{height:110px;background:linear-gradient(135deg,rgba(var(--brand-commodities-rgb),.4),rgba(var(--brand-confirm-rgb),.25));display:flex;align-items:center;justify-content:center;position:relative;cursor:pointer}.video-play{width:40px;height:40px;border-radius:50%;background:#ffffff26;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;color:#fff}.video-body{padding:12px 14px;background:var(--surface2)}.video-title{font-size:12px;font-weight:600;color:var(--text);margin-bottom:6px}.material-link{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--text2);padding:4px 0;cursor:pointer}.material-link:hover{color:var(--accent2)}.submit-tabs{display:flex;gap:6px;margin-bottom:16px}.submit-tab{flex:1;padding:8px;text-align:center;border-radius:7px;border:1px solid var(--border);background:var(--surface2);color:var(--text2);font-size:12px;font-weight:600;cursor:pointer}.submit-tab.active{border-color:var(--accent);color:var(--accent2);background:rgba(var(--brand-ai-rgb),.1)}.branch-row.expandable{cursor:pointer;flex-direction:column;align-items:stretch;gap:0}.branch-row-head{display:flex;align-items:center;gap:10px;width:100%}.branch-expand{margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}.sub-card.expandable{cursor:pointer}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(circle at 20% 15%,rgba(var(--brand-confirm-rgb),.14),transparent 55%),radial-gradient(circle at 80% 85%,rgba(var(--brand-commodities-rgb),.16),transparent 55%),var(--bg)}.auth-card{width:380px;max-width:100%;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:32px 28px}.auth-logo{display:flex;flex-direction:column;align-items:center;gap:10px;margin-bottom:24px}.auth-title{font-size:17px;font-weight:800;color:var(--white)}.auth-sub{font-size:12px;color:var(--text2);text-align:center;margin-top:-4px;margin-bottom:4px}.auth-divider{display:flex;align-items:center;gap:10px;margin:20px 0;font-size:11px;color:var(--text3)}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--border)}.auth-quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.auth-quick-btn{padding:10px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface2);color:var(--text);font-size:11px;font-weight:600;cursor:pointer;text-align:left}.auth-quick-btn:hover{border-color:var(--accent);background:rgba(var(--brand-ink-rgb),.05)}.auth-quick-btn .role-tag{display:block;color:var(--text2);font-weight:400;font-size:10px;margin-top:2px}.auth-footer-link{text-align:center;font-size:12px;color:var(--text2);margin-top:18px}.auth-footer-link a,.sidebar-link{color:var(--accent2);cursor:pointer}.sidebar-footer-link{padding:8px 16px;font-size:11px;color:var(--text3);cursor:pointer;text-align:center;border-top:1px solid var(--border)}.sidebar-footer-link:hover{color:var(--accent2)}@media (max-width: 1024px){.stats-row{grid-template-columns:repeat(2,1fr)}.spiral-layout,.info-grid{grid-template-columns:1fr}}@media (max-width: 768px){.sidebar{transform:translate(-100%)}.main{margin-left:0}.stats-row{grid-template-columns:1fr}}