body { font-family: -apple-system, system-ui, sans-serif; background: #f0f2f5; margin: 0; padding: 20px; display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.container { background: #fff; width: 100%; max-width: 400px; padding: 40px 20px; border-radius: 16px; box-shadow: 0 10px 25px rgba(0,0,0,0.05); text-align: center; }
h1 { font-size: 24px; margin-bottom: 10px; color: #1c1e21; }
p { color: #606770; font-size: 15px; line-height: 1.5; }
.step-box { background: #f7f8fa; padding: 20px; border-radius: 10px; text-align: left; margin: 30px 0; }
.step { font-size: 14px; color: #4b4f56; margin-bottom: 10px; }
.btn-primary { display: block; background: #007bff; color: #fff; text-decoration: none; padding: 15px; border-radius: 8px; font-weight: bold; font-size: 16px; transition: background 0.3s; }
.btn-primary:active { background: #0056b3; }
.btn-secondary { display: block; margin-top: 15px; color: #007bff; text-decoration: none; font-size: 14px; }
.udid-text { background: #e9ecef; padding: 15px; border-radius: 6px; font-family: monospace; word-break: break-all; font-size: 13px; color: #333; margin-top: 10px; }
.notice { margin-top: 30px; font-size: 12px; color: #bcc0c4; }