* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif; background: #f6f7f9; color: #222; }
.container { max-width: 720px; margin: 24px auto; padding: 0 16px; }
h1 { font-size: 22px; margin: 8px 0 16px; }
.card { background: #fff; border: 1px solid #e5e7eb; border-radius: 10px; padding: 16px; margin-bottom: 16px; box-shadow: 0 1px 2px rgba(0,0,0,0.04); }
label { display: block; font-size: 14px; color: #333; margin-bottom: 12px; }
input[type="text"], input[type="tel"], input[type="file"] { width: 100%; padding: 10px 12px; border: 1px solid #d1d5db; border-radius: 8px; outline: none; margin-top: 6px; font-size: 14px; background: #fff; }
input[type="file"] { padding: 8px; }
button { display: inline-block; background: #2563eb; color: #fff; border: none; border-radius: 8px; padding: 10px 16px; font-size: 14px; cursor: pointer; }
button:hover { background: #1d4ed8; }
.alert { padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-info { background: #e0f2fe; color: #075985; border: 1px solid #bae6fd; }
.tips { color: #6b7280; font-size: 13px; }
.tips.small { font-size: 12px; }
fieldset { border: 1px dashed #d1d5db; border-radius: 8px; margin-bottom: 12px; }
legend { padding: 0 8px; color: #374151; font-size: 13px; }
.or { text-align: center; color: #9ca3af; margin: 6px 0; font-size: 12px; }
.user { display: flex; justify-content: space-between; align-items: center; color: #374151; }
.logout { color: #2563eb; text-decoration: none; font-size: 13px; }
footer { text-align: center; padding: 12px; color: #9ca3af; font-size: 12px; }