:root{--green: #2D6A4F;--cream: #F5F0E8;--ink: #1B1B1B;--red: #C0392B;--muted: #6b6b6b}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,PingFang TC,Noto Sans TC,sans-serif;background:#faf8f4;color:var(--ink);font-size:15px}.center-note{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;color:var(--muted);text-align:center}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px;background:var(--cream)}.login-card{background:#fff;border-radius:12px;padding:28px 24px;width:100%;max-width:340px;box-shadow:0 2px 12px #00000014;display:flex;flex-direction:column;gap:14px}.login-card h1{font-size:20px;margin:0 0 4px}.login-card label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}.login-card input{padding:10px 12px;border:1px solid #ddd;border-radius:8px;font-size:16px}.login-card button{background:var(--green);color:#fff;border:none;border-radius:8px;padding:12px;font-size:16px;cursor:pointer}.login-card button:disabled{opacity:.6}.error{color:var(--red);font-size:13px;margin:0}.page{max-width:480px;margin:0 auto;padding:16px 14px 40px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.topbar h1{font-size:19px;margin:0}.topbar .logout,.back-link{background:none;border:none;color:var(--green);font-size:14px;cursor:pointer;text-decoration:none;padding:4px}.section-title{font-size:14px;color:var(--muted);margin:18px 0 8px}.nav-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:4px}.nav-grid a{background:#fff;border-radius:10px;padding:12px 4px;text-align:center;font-size:13px;color:var(--ink);text-decoration:none;box-shadow:0 1px 4px #0000000d}.nav-grid a:active{background:var(--cream)}.card{background:#fff;border-radius:12px;padding:14px;margin-bottom:10px;box-shadow:0 1px 4px #0000000d}.card-link{display:block;text-decoration:none;color:inherit}.session-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px}.session-head .name{font-weight:600;font-size:15px}.session-head .date{font-size:13px;color:var(--muted);white-space:nowrap}.session-meta{display:flex;justify-content:space-between;align-items:center;margin-top:8px;font-size:14px}.badge-red{color:var(--red);font-weight:600}.badge-ok{color:var(--green);font-weight:600}.countdown{font-size:12px;color:var(--muted)}.data-block{background:var(--cream);border-left:4px solid var(--green);border-radius:6px;padding:12px 14px;color:var(--ink);margin-bottom:10px}.data-block .row{display:flex;justify-content:space-between;padding:3px 0;font-size:14px}.data-block .row.total{border-top:1px solid #e0d8c8;margin-top:6px;padding-top:8px;font-weight:700}.data-block details>summary{list-style:none;cursor:pointer}.data-block details>summary:after{content:" ▸";color:var(--muted);font-size:11px}.data-block details[open]>summary:after{content:" ▾"}.data-block .row.sub{padding-left:12px;font-size:13px;color:var(--muted)}.adj-form{display:flex;flex-direction:column;gap:10px}.adj-form label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}.adj-form input,.adj-form select{padding:8px 10px;border:1px solid #ddd;border-radius:8px;font-size:15px;background:#fff}.adj-form button[type=submit]{background:var(--green);color:#fff;border:none;border-radius:8px;padding:11px;font-size:15px;cursor:pointer}.adj-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.month-switch{display:flex;align-items:center;gap:12px}.month-switch button{background:#fff;border:1px solid #ddd;border-radius:6px;padding:4px 10px;font-size:14px;cursor:pointer}.month-switch span{font-weight:600}.alert-list{list-style:none;margin:0;padding:0}.alert-list li{padding:8px 0;border-bottom:1px solid #f0ece2;font-size:14px;display:flex;justify-content:space-between}.alert-list li:last-child{border-bottom:none}.alert-count{color:var(--red);font-weight:700}.alert-zero{color:var(--muted)}table.roster{width:100%;border-collapse:collapse;font-size:13px}table.roster th,table.roster td{text-align:left;padding:8px 6px;border-bottom:1px solid #f0ece2}table.roster th{color:var(--muted);font-weight:500;font-size:12px}.tag{display:inline-block;font-size:11px;padding:2px 6px;border-radius:4px;background:var(--cream);color:var(--ink)}.tag.old{background:#e8f0ec;color:var(--green)}.book-stats{display:flex;gap:8px}.book-stats .stat{flex:1;background:var(--cream);border-left:4px solid var(--green);border-radius:6px;padding:10px;text-align:center}.book-stats .stat .num{font-size:20px;font-weight:700}.book-stats .stat .lbl{font-size:12px;color:var(--muted)}.v1-link{display:inline-block;margin-top:12px;color:var(--green);font-size:14px}.note{font-size:12px;color:var(--muted)}