:root{--bg:#ffffff;--fg:#111111;--muted:#6b6b6b;--line:#e4e4e4;--line-strong:#cfcfcf;--surface:#fafafa;--accent:#111111;--danger:#b3261e;--warn:#8a5a00;--ok:#1c6b3c;--radius:10px;--radius-sm:7px;--shadow:0 1px 2px rgba(0,0,0,0.05);color-scheme:light}*{box-sizing:border-box}body,html{padding:0;margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;-webkit-text-size-adjust:100%}a{color:inherit}h1,h2,h3{margin:0;font-weight:650;letter-spacing:-.015em}h1{font-size:1.5rem}h2{font-size:1.15rem}h3{font-size:1rem}p{margin:0}.page{min-height:100dvh;display:flex;flex-direction:column}.container{width:100%;max-width:1040px;margin:0 auto;padding:0 16px}.topbar{border-bottom:1px solid var(--line);position:-webkit-sticky;position:sticky;top:0;background:rgba(255,255,255,.92);-webkit-backdrop-filter:saturate(180%) blur(8px);backdrop-filter:saturate(180%) blur(8px);z-index:20}.topbar-inner{gap:12px;height:56px}.brand,.topbar-inner{display:flex;align-items:center}.brand{gap:8px;font-weight:650;letter-spacing:-.02em;text-decoration:none;white-space:nowrap}.spacer{flex:1 1}.tabs{display:flex;gap:4px;overflow-x:auto;border-bottom:1px solid var(--line);margin:0 0 20px;scrollbar-width:none}.tabs::-webkit-scrollbar{display:none}.tab{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:none;border:0;border-bottom:2px solid transparent;padding:12px;font:inherit;font-size:.94rem;color:var(--muted);cursor:pointer;white-space:nowrap;display:inline-flex;align-items:center;gap:7px}.tab[data-active=true]{color:var(--fg);border-bottom-color:var(--fg);font-weight:560}main{flex:1 1;padding:20px 0 64px}.card{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg);padding:16px}.card+.card{margin-top:12px}.card-head{display:flex;align-items:center;gap:10px;margin-bottom:12px}.stack{flex-direction:column;gap:12px}.row,.stack{display:flex}.row{align-items:center;gap:10px;flex-wrap:wrap}.muted{color:var(--muted);font-size:.875rem}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.85rem;word-break:break-all}.grid{display:grid;grid-gap:12px;gap:12px;grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--accent);background:var(--accent);color:#fff;border-radius:var(--radius-sm);padding:9px 14px;font:inherit;font-size:.92rem;font-weight:550;cursor:pointer;text-decoration:none;transition:opacity .12s ease,background .12s ease}.btn:hover:not(:disabled){opacity:.86}.btn:disabled{opacity:.45;cursor:not-allowed}.btn.secondary{background:transparent;color:var(--fg);border-color:var(--line-strong)}.btn.secondary:hover:not(:disabled){background:var(--surface);opacity:1}.btn.ghost{background:transparent;border-color:transparent;color:var(--muted);padding:7px 8px}.btn.ghost:hover:not(:disabled){color:var(--fg);background:var(--surface);opacity:1}.btn.danger{background:transparent;color:var(--danger);border-color:var(--line-strong)}.btn.small{padding:6px 10px;font-size:.84rem}.btn.block{width:100%}.icon-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--line-strong);background:var(--bg);border-radius:var(--radius-sm);width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;color:var(--fg)}.icon-btn:hover{background:var(--surface)}label.field{display:flex;flex-direction:column;gap:6px;font-size:.86rem;color:var(--muted);font-weight:500}input[type=date],input[type=datetime-local],input[type=number],input[type=password],input[type=text],input[type=time],select,textarea{font:inherit;font-size:.95rem;color:var(--fg);background:var(--bg);border:1px solid var(--line-strong);border-radius:var(--radius-sm);padding:9px 11px;width:100%}.btn:focus-visible,.icon-btn:focus-visible,.tab:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--fg);outline-offset:2px}textarea{resize:vertical;min-height:72px}.checkbox{display:flex;align-items:flex-start;gap:10px;font-size:.92rem;color:var(--fg);cursor:pointer}.checkbox input{margin-top:3px;width:17px;height:17px;accent-color:var(--fg);flex:none}.notice{border:1px solid var(--line);border-left:3px solid var(--fg);border-radius:var(--radius-sm);padding:10px 12px;font-size:.9rem;background:var(--surface)}.notice.error{border-left-color:var(--danger);color:var(--danger)}.notice.ok{border-left-color:var(--ok);color:var(--ok)}.badge{display:inline-flex;align-items:center;gap:5px;border:1px solid var(--line-strong);border-radius:999px;padding:2px 9px;font-size:.75rem;color:var(--muted);white-space:nowrap}.badge.solid{background:var(--fg);color:#fff;border-color:var(--fg)}.badge.warn{color:var(--warn);border-color:#e8d5a8;background:#fdf7e8}.badge.danger{color:var(--danger);border-color:#eccac7;background:#fdf2f1}.week{display:grid;grid-gap:12px;gap:12px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));align-items:start}.day{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.day-head{padding:9px 12px;border-bottom:1px solid var(--line);background:var(--surface);display:flex;align-items:baseline;justify-content:space-between;gap:8px}.day-head strong{font-size:.92rem;font-weight:600}.day-head span{font-size:.76rem;color:var(--muted)}.day[data-today=true] .day-head{background:var(--fg);color:#fff}.day[data-today=true] .day-head span{color:rgba(255,255,255,.75)}.lesson{padding:9px 12px;border-bottom:1px solid var(--line);display:flex;gap:10px;align-items:flex-start}.lesson:last-child{border-bottom:0}.lesson-time{font-size:.74rem;color:var(--muted);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;padding-top:2px;min-width:38px}.lesson-body{flex:1 1;min-width:0}.lesson-title{font-size:.92rem;font-weight:560;overflow-wrap:anywhere}.lesson-meta{font-size:.78rem;color:var(--muted);overflow-wrap:anywhere}.lesson[data-cancelled=true] .lesson-title{text-decoration:line-through;color:var(--muted)}.lesson[data-irregular=true]{background:#fdf7e8}.day-empty{padding:14px 12px;font-size:.82rem;color:var(--muted)}.task{display:flex;gap:12px;padding:12px;border:1px solid var(--line);border-radius:var(--radius);align-items:flex-start}.task[data-priority="3"]{border-color:#e8d5a8}.task[data-priority="4"]{border-color:#eccac7}.task[data-done=true]{opacity:.55}.task[data-done=true] .task-title{text-decoration:line-through}.task-title{font-weight:560;font-size:.95rem;overflow-wrap:anywhere}.task-body{flex:1 1;min-width:0;display:flex;flex-direction:column;gap:6px}.task-actions{display:flex;gap:6px;flex-wrap:wrap}.check{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1.5px solid var(--line-strong);background:var(--bg);border-radius:6px;width:22px;height:22px;flex:none;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;color:transparent;margin-top:1px}.check[data-checked=true]{background:var(--fg);border-color:var(--fg);color:#fff}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}table{width:100%;border-collapse:collapse;font-size:.88rem}td,th{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);white-space:nowrap}th{background:var(--surface);font-weight:600;font-size:.8rem;color:var(--muted)}tr:last-child td{border-bottom:0}.auth{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:24px 16px}.auth-box{width:100%;max-width:420px}.auth-head{margin-bottom:20px}.auth-switch{display:flex;border:1px solid var(--line-strong);border-radius:var(--radius-sm);overflow:hidden;margin-bottom:18px}.auth-switch button{flex:1 1;-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;background:var(--bg);padding:9px;font:inherit;font-size:.9rem;cursor:pointer;color:var(--muted)}.auth-switch button[data-active=true]{background:var(--fg);color:#fff;font-weight:550}.suggestions{border:1px solid var(--line-strong);border-radius:var(--radius-sm);margin-top:4px;max-height:220px;overflow-y:auto}.suggestion{display:block;width:100%;text-align:left;-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;border-bottom:1px solid var(--line);background:var(--bg);padding:9px 11px;font:inherit;font-size:.88rem;cursor:pointer}.suggestion:last-child{border-bottom:0}.suggestion:hover{background:var(--surface)}.suggestion small{display:block;color:var(--muted);font-size:.76rem}.copy-row{display:flex;gap:8px;align-items:stretch}.copy-row input{flex:1 1;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.8rem}.steps{margin:0;padding-left:20px;font-size:.88rem;color:var(--fg)}.steps li{margin-bottom:6px}.steps li::marker{color:var(--muted)}@media (max-width:600px){h1{font-size:1.3rem}.brand{font-size:.92rem}.topbar-inner{gap:8px}.card{padding:14px}.week{grid-template-columns:1fr}.btn{padding:10px 14px}}