:root{--primary: #4F46E5;--primary-hover: #4338CA;--bg: #F3F4F6;--surface: #FFFFFF;--text-main: #111827;--text-muted: #6B7280;--border: #E5E7EB;--radius: 16px}body{margin:0;padding:2rem 1.5rem;box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg);color:var(--text-main);display:flex;min-height:100vh}.container{background:var(--surface);padding:2.5rem;border-radius:var(--radius);box-shadow:0 10px 25px -5px #0000001a,0 8px 10px -6px #0000001a;width:100%;max-width:550px;text-align:center;box-sizing:border-box;margin:auto}img{max-width:100%;height:auto;display:block;border-radius:8px}h1{margin-top:0;font-size:1.8rem}h2{font-size:1.4rem;margin-bottom:1.5rem}p{color:var(--text-muted);line-height:1.6}button{background-color:var(--primary);color:#fff;border:none;padding:.875rem 1.5rem;font-size:1rem;font-weight:600;border-radius:8px;cursor:pointer;transition:all .2s ease;width:100%;margin-top:1rem}button:hover{background-color:var(--primary-hover)}button:active{transform:scale(.98)}button.back-btn{width:auto;display:inline-flex;align-items:center;gap:.4rem;margin-right:auto}.back-icon{width:1.1rem;height:1.1rem}.secondary-btn{background-color:transparent;color:var(--text-main);border:2px solid var(--border)}.secondary-btn:hover{background-color:var(--bg)}.secondary-btn:disabled{opacity:.4;cursor:not-allowed}.actions{display:flex;gap:1rem;margin-top:1.5rem}