* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; background: #f5f6fa; color: #1f2329; padding: 24px; }
#app { max-width: 880px; margin: 0 auto; }
h1 { font-size: 22px; margin-bottom: 4px; }
h2 { font-size: 17px; margin-bottom: 12px; }
.sub, .hint { color: #8a8f99; font-size: 13px; margin-bottom: 16px; }
.card { background: #fff; border-radius: 12px; padding: 20px; margin-bottom: 18px; box-shadow: 0 2px 8px rgba(0,0,0,.04); }
.login-box { max-width: 360px; margin: 80px auto; }
.login-box input, .form-grid input, .form-grid select { width: 100%; padding: 9px 10px; border: 1px solid #dcdfe6; border-radius: 8px; font-size: 14px; }
.login-box button, .card > button { margin-top: 14px; width: 100%; padding: 10px; background: #2f6fed; color: #fff; border: none; border-radius: 8px; font-size: 15px; cursor: pointer; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.form-grid label { font-size: 13px; color: #51565d; display: flex; flex-direction: column; gap: 5px; }
.card > button { width: auto; padding: 9px 22px; }
.header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.ghost { width: auto; background: transparent; color: #2f6fed; border: 1px solid #2f6fed; padding: 6px 16px; margin: 0; }
.error { color: #e54545; font-size: 13px; margin-top: 10px; }
pre { background: #0f1420; color: #d6e2ff; padding: 14px; border-radius: 8px; font-size: 12.5px; overflow: auto; max-height: 320px; }
@media (max-width: 600px) { .form-grid { grid-template-columns: 1fr; } }