:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5;color:#1a1a2e;background:#f8fafc}*{box-sizing:border-box}body{margin:0}.app{min-height:100vh}.header{display:flex;align-items:center;justify-content:space-between;padding:1rem 2rem;background:#fff;border-bottom:1px solid #e2e8f0}.logo{font-weight:700;font-size:1.25rem;color:#2563eb;text-decoration:none}.header nav a{color:#475569;text-decoration:none;margin-left:1rem}.main{max-width:960px;margin:0 auto;padding:2rem}.hero h1{font-size:2.5rem;margin-bottom:.5rem}.muted{color:#64748b}.verify code{background:#e2e8f0;padding:.15rem .4rem;border-radius:4px}.upload-placeholder{margin-top:2rem;padding:2rem;border:2px dashed #cbd5e1;border-radius:8px;text-align:center;color:#64748b}