* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, "Noto Sans", sans-serif, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei"; background: linear-gradient(135deg, #1c499e, #2457b5); min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.reg-box { background: #fff; padding: 36px 34px; border-radius: 14px; box-shadow: 0 16px 50px rgba(0,0,0,.22); width: 100%; max-width: 460px; }
.reg-box .brand { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 6px; }
.reg-box .brand .logo { width: 40px; height: 40px; background: linear-gradient(135deg, #2457b5, #2457b5); border-radius: 10px; color: #fff; font-size: 20px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.reg-box h2 { text-align: center; font-size: 20px; color: #22313a; }
.reg-box .subtitle { text-align: center; color: #8a9a93; font-size: 13px; margin: 8px 0 24px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
.form-group { display: flex; flex-direction: column; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 13px; color: #556; margin-bottom: 6px; }
.form-group label .req { color: #e5484d; }
.form-group input, .form-group select { padding: 10px 12px; border: 1px solid #d5e2db; border-radius: 8px; font-size: 14px; outline: none; font-family: inherit; transition: border-color .15s; }
.form-group input:focus, .form-group select:focus { border-color: #2457b5; }
.btn-reg { width: 100%; padding: 12px; border: 0; border-radius: 8px; background: #2457b5; color: #fff; font-size: 16px; cursor: pointer; margin-top: 22px; transition: background .15s; }
.btn-reg:hover { background: #1c499e; }
.error, .success { padding: 10px 14px; border-radius: 8px; font-size: 13px; text-align: center; margin-bottom: 18px; }
.error { background: #fdecec; color: #c43a3f; border: 1px solid #f5c6c8; }
.success { background: #e9eef8; color: #1c499e; border: 1px solid #b9c7e8; }
.login-link { text-align: center; margin-top: 18px; font-size: 13px; color: #8a9a93; }
.login-link a { color: #2457b5; text-decoration: none; }
.login-link a:hover { text-decoration: underline; }
@media (max-width: 480px) { .form-grid { grid-template-columns: 1fr; } }