:root{font-family:system-ui,-apple-system,Segoe UI,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color:#213547;background-color:#fff;-webkit-text-size-adjust:100%}body{margin:0;min-width:320px}#root{margin:0;padding:0}input,button{font-family:inherit;font-size:16px}*{box-sizing:border-box}.splash-overlay{min-height:100vh;background:#000;color:#fff;display:flex;align-items:center;justify-content:center;padding:24px}.splash-content{max-width:860px;width:100%;text-align:center}.splash-title{font-size:48px;font-weight:900;letter-spacing:4px;margin:0 0 8px}.splash-tagline{font-size:18px;color:#aaa;letter-spacing:1px;margin:0 0 32px}.splash-steps{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:32px}.splash-step{display:flex;align-items:center;gap:10px;background:#1a1a1a;padding:12px 16px;border-radius:8px;font-size:14px;text-align:left}.splash-step-num{width:28px;height:28px;border-radius:50%;background:#fff;color:#000;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:14px;flex-shrink:0}.splash-preview{margin:0 auto 32px;max-width:100%;overflow:hidden;display:flex;justify-content:center;height:500px}.splash-preview-inner{transform:scale(.7);transform-origin:top center;flex-shrink:0}.splash-cta{padding:16px 48px;background:#fff;color:#000;border:none;border-radius:8px;font-size:18px;font-weight:900;letter-spacing:1px;cursor:pointer;transition:background .2s}.splash-cta:hover{background:#e0e0e0}.site-header{background:#000;color:#fff;padding:16px 20px;text-align:center}.site-header h1{margin:0;font-size:24px;font-weight:900;letter-spacing:2px}.site-header p{margin:4px 0 0;font-size:14px;color:#aaa;letter-spacing:1px}.app-layout{display:flex;min-height:calc(100vh - 70px)}.form-panel{width:420px;min-width:420px;border-right:1px solid #ddd;overflow-y:auto;background:#f9f9f9}.desktop-preview{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;background:#e9e9e9;overflow:auto}.mobile-only{display:none}.mobile-tabs{display:flex;background:#f0f0f0;border-bottom:1px solid #ddd;position:sticky;top:0;z-index:10}.mobile-tab{flex:1;padding:12px 8px;border:none;background:transparent;font-size:15px;font-weight:600;color:#666;cursor:pointer;border-bottom:3px solid transparent;transition:color .15s,border-color .15s}.mobile-tab.active{color:#000;border-bottom-color:#000;background:#fff}.mobile-content,.mobile-preview{min-height:calc(100vh - 120px)}.printing-info{background:#fff;border-radius:8px;padding:20px;margin:20px;border:1px solid #ddd}.printing-info h3{margin:0 0 12px;font-size:16px}.printing-info h4{margin:16px 0 6px;font-size:14px}.printing-info p,.printing-info li{font-size:13px;line-height:1.5;color:#444;margin:0 0 4px}.printing-info ul{padding-left:18px;margin:0}.printing-info a{color:#007bff;text-decoration:none}.printing-info a:hover{text-decoration:underline}@media(max-width:900px){.desktop-only{display:none}.mobile-only{display:block}.splash-title{font-size:32px}.splash-tagline{font-size:15px}.splash-steps{flex-direction:column;align-items:center}.splash-step{width:100%;max-width:320px}.splash-preview{height:290px}.splash-preview-inner{transform:scale(.4)}}