* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, "Noto Sans TC", sans-serif; background: #f5f6f8; color: #1d2330; }
header { display: flex; justify-content: space-between; align-items: center; padding: 12px 20px; background: #1d2330; color: #fff; }
main { max-width: 1100px; margin: 24px auto; padding: 0 16px; }
.card { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,.08); margin-bottom: 16px; }
input, select, button { font: inherit; padding: 8px 10px; border: 1px solid #c8ccd4; border-radius: 6px; }
button { background: #2f6fed; color: #fff; border-color: #2f6fed; cursor: pointer; }
button.secondary { background: #fff; color: #1d2330; border-color: #c8ccd4; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid #e3e6eb; }
.error { color: #c62828; min-height: 1.2em; }
.login { max-width: 360px; margin: 12vh auto; }
.login input, .login button { width: 100%; margin-top: 10px; }