:root{--bg: #f0f2ef;--surface: #ffffff;--surface-2: #f7f8f6;--ink: #1a1f16;--ink-muted: #6b7364;--ink-faint: #9aa093;--teal: #1a7a6d;--teal-light: #e6f4f2;--accent: #e85d3b;--accent-soft: #fdeee9;--border: #e0e4dc;--radius-sm: 10px;--radius-md: 16px;--radius-lg: 24px;--shadow-sm: 0 2px 12px rgba(26, 31, 22, .06);--font: "DM Sans", "Noto Sans SC", system-ui, sans-serif;--tab-h: 84px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);background:var(--bg);color:var(--ink);min-height:100vh}#root{max-width:430px;margin:0 auto;min-height:100vh;background:var(--bg)}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer}.app-shell{min-height:100vh;display:flex;flex-direction:column;padding-bottom:var(--tab-h)}.page-body{flex:1;padding:0 20px 24px}.fullscreen-page{min-height:100vh;padding:0 20px 24px}.greeting{padding:8px 0 16px}.greeting small{color:var(--ink-muted);font-size:13px}.greeting h2{font-size:22px;font-weight:700;margin-top:4px}.role-tag{display:inline-flex;align-items:center;background:var(--teal);color:#fff;font-size:11px;font-weight:600;padding:4px 10px;border-radius:999px;margin-bottom:12px}.card{background:var(--surface);border-radius:var(--radius-md);padding:16px;box-shadow:var(--shadow-sm);border:1px solid var(--border);margin-bottom:12px}a.card,a.card:visited,a.card:hover,a.card:active{display:block;text-decoration:none;color:inherit}.card-teal{background:linear-gradient(135deg,var(--teal) 0%,#238f7e 100%);color:#fff;border:none;padding:20px}.card-teal .sub{font-size:12px;opacity:.85;margin-top:4px}.card-teal .big{font-size:22px;font-weight:700;margin:8px 0}a.card-teal{display:block;color:#fff}a.card-teal h3,a.card-teal p,a.card-teal span{color:#fff}.btn-row{display:flex;gap:10px;margin-top:16px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;border-radius:999px;font-size:14px;font-weight:600;border:none}.btn-teal{background:var(--teal);color:#fff;width:100%}.btn-outline{background:transparent;border:1.5px solid var(--border);color:var(--ink);width:100%}.btn-accent{background:var(--accent);color:#fff;flex:2}.btn-ghost-white{background:#fff3;color:#fff;border:1px solid rgba(255,255,255,.3);flex:1}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-danger{background:var(--accent);color:#fff}.section-title{display:flex;justify-content:space-between;align-items:center;margin:20px 0 10px;font-size:15px;font-weight:700}.pill{font-size:11px;padding:3px 8px;border-radius:6px;background:var(--teal-light);color:var(--teal);font-weight:500}.pill-live{background:var(--accent-soft);color:var(--accent)}.session-card h4{font-size:15px;font-weight:600}.session-card p{font-size:12px;color:var(--ink-muted);margin-top:4px}.course-row{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.course-row-main{flex:1;min-width:0}.course-edit-btn{flex-shrink:0;width:auto;min-width:56px;margin-top:2px;padding:8px 14px}.session-meta{display:flex;gap:8px;margin-top:10px;align-items:center}.check-row{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--border)}.check-row:last-child{border-bottom:none}.avatar{width:40px;height:40px;border-radius:50%;background:var(--teal-light);color:var(--teal);display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}.check-info{flex:1;min-width:0}.check-info h4{font-size:14px;font-weight:600}.check-info p{font-size:12px;color:var(--ink-muted);margin-top:2px}.check-btn{width:36px;height:36px;border-radius:50%;border:2px solid var(--border);background:var(--surface);color:var(--ink-faint);font-size:16px;flex-shrink:0}.check-btn.done{background:var(--teal);border-color:var(--teal);color:#fff}.week-strip{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;margin-bottom:16px}.day-cell{text-align:center;padding:8px 4px;border-radius:var(--radius-sm);font-size:11px;color:var(--ink-muted);border:none;background:transparent}.day-cell .d{font-size:15px;font-weight:700;margin-top:4px;color:var(--ink)}.day-cell.today{background:var(--teal);color:#fff}.day-cell.today .d{color:#fff}.day-cell.has-class .d{color:var(--teal)}.timeline-item{display:flex;gap:12px;margin-bottom:12px}a.timeline-item{display:flex;text-decoration:none;color:inherit}.timeline-time{width:48px;font-size:13px;font-weight:700;color:var(--teal);padding-top:14px;flex-shrink:0}.timeline-block{flex:1;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:14px}.top-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0 8px}.back-link{color:var(--teal);font-size:14px;font-weight:600;border:none;background:none}.tab-bar{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:430px;height:var(--tab-h);background:var(--surface);border-top:1px solid var(--border);display:flex;justify-content:space-around;padding-top:10px;z-index:50}.tab{display:flex;flex-direction:column;align-items:center;gap:4px;font-size:10px;color:var(--ink-faint);font-weight:500;background:none;border:none}.tab.active{color:var(--teal);font-weight:600}.tab-icon{width:24px;height:24px;display:flex;align-items:center;justify-content:center}.login-page{min-height:100vh;display:flex;flex-direction:column;justify-content:center;padding:32px 24px}.login-page h1{font-size:26px;margin-bottom:8px}.login-page p{color:var(--ink-muted);font-size:14px;margin-bottom:32px}.form-field{width:100%;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius-md);font-size:15px;margin-bottom:12px;font-family:inherit}.login-error{color:var(--accent);font-size:13px;margin-bottom:12px}.profile-header{text-align:center;padding:24px 0}.profile-header .avatar{width:64px;height:64px;margin:0 auto 12px;font-size:24px}.empty-state{text-align:center;padding:48px 20px}.empty-icon{font-size:40px;margin-bottom:12px}.empty-state h3{font-size:16px;margin-bottom:8px}.empty-state p{font-size:13px;color:var(--ink-muted);margin-bottom:20px;line-height:1.6}.skeleton{background:linear-gradient(90deg,#e5e8e3 25%,#f0f2ef,#e5e8e3 75%);background-size:200% 100%;animation:shimmer 1.2s infinite;border-radius:8px}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.page-error{text-align:center;padding:24px}.page-error p{color:var(--ink-muted);margin-bottom:16px}.toast{position:fixed;top:16px;left:50%;transform:translate(-50%);width:calc(100% - 32px);max-width:398px;padding:12px 16px;border-radius:var(--radius-sm);color:#fff;font-size:13px;z-index:200}.toast.success{background:var(--teal)}.toast.error{background:#b91c1c}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#1a1f1673;display:flex;align-items:center;justify-content:center;padding:24px;z-index:150}.modal{background:var(--surface);border-radius:var(--radius-md);padding:24px 20px 20px;width:100%;max-width:320px}.modal h3{font-size:17px;margin-bottom:8px}.modal p{font-size:14px;color:var(--ink-muted);line-height:1.6;margin-bottom:20px}.modal-actions{display:flex;gap:10px}.modal-actions .btn{flex:1}.summary-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#f0f2eff2;display:flex;align-items:center;justify-content:center;padding:24px;z-index:160}.summary-card{background:var(--surface);border-radius:var(--radius-md);padding:24px 20px;width:100%;max-width:320px;text-align:center;box-shadow:var(--shadow-sm)}.summary-card .icon{width:64px;height:64px;border-radius:50%;background:var(--teal-light);color:var(--teal);font-size:32px;margin:0 auto 12px;display:flex;align-items:center;justify-content:center}.summary-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}.summary-stat{background:var(--surface-2);border-radius:var(--radius-sm);padding:12px}.summary-stat .num{font-size:24px;font-weight:700;color:var(--teal)}.summary-stat .lbl{font-size:11px;color:var(--ink-muted);margin-top:4px}.btn-sm{font-size:12px;padding:8px 14px}.field-label{display:block;font-size:12px;color:var(--ink-muted);margin-bottom:6px;font-weight:600}.hint-box{font-size:12px;color:var(--ink-muted);background:var(--surface-2);border-radius:var(--radius-sm);padding:12px;line-height:1.6;margin-top:12px}.sheet-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#1a1f1673;display:flex;flex-direction:column;justify-content:flex-end;z-index:150}.bottom-sheet{background:var(--surface);border-radius:var(--radius-lg) var(--radius-lg) 0 0;padding:12px 20px 32px;max-width:430px;margin:0 auto;width:100%;max-height:85vh;overflow-y:auto}.sheet-handle{width:40px;height:4px;background:var(--border);border-radius:999px;margin:0 auto 16px}.sheet-title{font-size:17px;font-weight:700;margin-bottom:16px}.timeline-link{display:block;text-decoration:none;color:inherit;flex:1}.manage-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--border);background:var(--surface);color:var(--ink-muted);font-size:16px;flex-shrink:0;margin-top:10px;text-decoration:none}.session-action-btn{flex-shrink:0;width:auto;min-width:48px;margin-top:10px;padding:8px 10px;font-size:12px}.weekday-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.chip{width:36px;height:36px;border-radius:50%;border:1.5px solid var(--border);background:var(--surface);font-size:13px;font-weight:600;color:var(--ink-muted)}.chip-active{background:var(--teal);border-color:var(--teal);color:#fff}select.form-field{-webkit-appearance:auto;-moz-appearance:auto;appearance:auto}