:root{--tg-bg-color:#fff;--tg-text-color:#000;--tg-hint-color:#8b8b8b;--tg-link-color:#2481cc;--tg-button-color:#2481cc;--tg-button-text-color:#fff;--tg-secondary-bg-color:#f1f1f1;--gap:10px;--radius:16px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--tg-secondary-bg-color);color:var(--tg-text-color);-webkit-tap-highlight-color:transparent;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:16px}.app{flex-direction:column;max-width:720px;height:100%;margin:0 auto;display:flex}.header{background:var(--tg-bg-color);color:var(--tg-text-color);border-bottom:1px solid var(--tg-secondary-bg-color);flex:none;align-items:center;gap:6px;padding:12px 16px;font-weight:600;display:flex;position:sticky;top:0}.header-title{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.back{color:var(--tg-link-color);cursor:pointer;background:0 0;border:none;padding:0 6px 0 0;font-size:26px;line-height:1}.conv-list{background:var(--tg-secondary-bg-color);flex-direction:column;flex:auto;display:flex;overflow-y:auto}.conv-row{text-align:left;border:none;border-bottom:1px solid var(--tg-secondary-bg-color);background:var(--tg-bg-color);width:100%;color:var(--tg-text-color);font:inherit;cursor:pointer;flex-direction:column;gap:4px;padding:12px 16px;display:flex}.conv-top{justify-content:space-between;align-items:baseline;gap:8px;display:flex}.conv-name{text-overflow:ellipsis;white-space:nowrap;font-weight:600;overflow:hidden}.conv-time{color:var(--tg-hint-color);flex:none;font-size:12px}.conv-bottom{justify-content:space-between;align-items:center;gap:8px;display:flex}.conv-preview{color:var(--tg-hint-color);text-overflow:ellipsis;white-space:nowrap;font-size:14px;overflow:hidden}.conv-empty{opacity:.7;font-style:italic}.badge{background:var(--tg-button-color);min-width:20px;height:20px;color:var(--tg-button-text-color);border-radius:10px;flex:none;justify-content:center;align-items:center;padding:0 6px;font-size:12px;font-weight:600;display:inline-flex}.messages{padding:var(--gap) 12px calc(var(--gap) + env(safe-area-inset-bottom,0px));background:var(--tg-secondary-bg-color);flex-direction:column;flex:auto;gap:6px;display:flex;overflow-y:auto}.notice{color:var(--tg-hint-color);text-align:center;margin:24px 12px;line-height:1.4}.load-older{background:var(--tg-bg-color);color:var(--tg-link-color);border:none;border-radius:14px;align-self:center;margin:8px 0;padding:6px 14px;font-size:14px}.row{display:flex}.row-mine{justify-content:flex-end}.row-theirs{justify-content:flex-start}.bubble{border-radius:var(--radius);word-wrap:break-word;white-space:pre-wrap;flex-direction:column;max-width:80%;padding:8px 12px;line-height:1.35;display:flex}.bubble-mine{background:var(--tg-button-color);color:var(--tg-button-text-color);border-bottom-right-radius:4px}.bubble-theirs{background:var(--tg-bg-color);color:var(--tg-text-color);border-bottom-left-radius:4px}.time{opacity:.6;align-self:flex-end;margin-top:2px;font-size:11px}.action-error{color:#a30000;background:#ffe3e3;border-radius:12px;flex:none;margin:0 10px 6px;padding:8px 12px;font-size:14px}.action-error .dismiss{opacity:.7;font-size:12px}.composer{padding:8px 10px calc(8px + env(safe-area-inset-bottom,0px));background:var(--tg-bg-color);border-top:1px solid var(--tg-secondary-bg-color);flex:none;gap:8px;display:flex}.input{resize:none;border:1px solid var(--tg-secondary-bg-color);background:var(--tg-secondary-bg-color);max-height:120px;color:var(--tg-text-color);font:inherit;border-radius:18px;flex:auto;padding:10px 12px}.input:focus{border-color:var(--tg-link-color);outline:none}.send{background:var(--tg-button-color);color:var(--tg-button-text-color);font:inherit;border:none;border-radius:18px;flex:none;padding:0 18px;font-weight:600}.send:disabled{opacity:.5}