:root{--tg-theme-bg-color: #ffffff;--tg-theme-text-color: #000000;--tg-theme-hint-color: #999999;--tg-theme-link-color: #2481cc;--tg-theme-button-color: #2481cc;--tg-theme-button-text-color: #ffffff;--tg-theme-secondary-bg-color: #f0f0f0}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--tg-theme-bg-color);color:var(--tg-theme-text-color);min-height:100vh;padding:16px}button{font-family:inherit;cursor:pointer;border:none;border-radius:12px;padding:14px 24px;font-size:15px;font-weight:600;transition:opacity .2s,transform .1s;width:100%}button:active{transform:scale(.98)}button:disabled{opacity:.5;cursor:not-allowed}.primary-btn{background:var(--tg-theme-button-color);color:var(--tg-theme-button-text-color)}.secondary-btn{background:var(--tg-theme-secondary-bg-color);color:var(--tg-theme-text-color)}.danger-btn{background:#ff3b30;color:#fff}