:root{color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC",sans-serif;color:#25384b;background:#f4f7fa}
*{box-sizing:border-box}body{margin:0;padding:32px 18px;line-height:1.6}.auth-card,.stats-card{max-width:680px;margin:auto;background:#fff;border:1px solid #dce5ed;border-radius:20px;padding:28px;box-shadow:0 18px 48px rgba(6,24,43,.08)}
.auth-card{max-width:460px}.brand{color:#06182b;font-size:18px;font-weight:800;text-decoration:none}h1{margin:14px 0 8px;color:#06182b;font-size:26px}p{margin:0 0 18px}.meta{color:#66788a;font-size:14px}
form{display:grid;gap:14px}label{display:grid;gap:6px;font-weight:700}input{width:100%;border:1px solid #bfcddd;border-radius:9px;padding:12px;font:inherit}input:focus{outline:2px solid #2d8cff;outline-offset:2px}
button{border:0;border-radius:9px;background:#2d8cff;color:#fff;padding:12px 18px;font:inherit;font-weight:800;cursor:pointer}button:hover{background:#0878e8}.secondary{background:#eef1f4;color:#25384b}.error{margin:14px 0;padding:10px 12px;border-radius:8px;background:#fff0f0;color:#a22828}
.admin-head{display:flex;align-items:start;justify-content:space-between;gap:20px}.admin-head form{display:block}.total{font-size:44px;font-weight:800;color:#0878e8}.summary{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:24px 0}.tile{background:#eaf4ff;border-radius:12px;padding:14px}.tile b{display:block;font-size:24px;color:#06182b}.tile span{font-size:13px;color:#66788a}
table{width:100%;border-collapse:collapse}th,td{padding:10px;border-bottom:1px solid #dce5ed;text-align:left}th:last-child,td:last-child{text-align:right}@media(max-width:520px){.summary{grid-template-columns:1fr}.stats-card,.auth-card{padding:22px}.admin-head{align-items:center}}