:root{--primary-color:#2c7b80;--primary-light:#469a9f;--primary-dark:#1f5c60;--bg-color:#f5f6f8;--surface-color:#fff;--text-primary:#1a1a1a;--text-secondary:#666;--border-color:#e0e0e0;--font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--border-radius:12px;--shadow-sm:0 2px 8px #0000000d;--shadow-md:0 4px 16px #00000014}*{box-sizing:border-box;margin:0;padding:0}html,body{background-color:var(--bg-color);max-width:100vw;color:var(--text-primary);font-family:var(--font-family);-webkit-font-smoothing:antialiased;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input,select{outline:none;font-family:inherit}.app-container{background-color:var(--bg-color);flex-direction:column;max-width:480px;min-height:100vh;margin:0 auto;display:flex;position:relative;box-shadow:0 10px 40px #00000026}@media (min-width:481px){body:not(.admin-mode){background-color:#0f172a!important}}body.admin-mode .app-container{max-width:100vw;box-shadow:none;margin:0}.app-header{background-color:var(--surface-color);border-bottom:1px solid var(--border-color);z-index:10;align-items:center;padding:16px;display:flex;position:sticky;top:0}.back-button{cursor:pointer;background:#e8e8e8;border:none;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;margin-right:16px;font-size:18px;transition:background .2s;display:flex}.back-button:hover{background:#d0d0d0}.header-title{flex:1;font-size:18px;font-weight:500}.header-action{background-color:var(--primary-dark);color:#fff;border-radius:20px;align-items:center;padding:6px 12px;font-size:14px;font-weight:600;display:flex}.header-action svg{margin-right:6px}